LUMBAR SUPPORT MECHANISM AND ADJUSTABLE BED THEREWITH

Abstract

The lumbar support and massage mechanism and an adjustable bed therewith. The lumbar support and massage mechanism includes a lumbar support member, a massage member installed on the lumbar support member, and a lumbar lifting assembly comprising at least one lumbar lifting structure moveably connected to the lumbar support member, and a lumbar lifting actuator operably driving the at least one lumbar lifting structure to move so as to lift or retract the lumbar support member for providing lumbar support and massage effects.

Claims

1. A lumbar support mechanism usable in an adjustable bed, comprising: a lumbar support member; and a lumbar lifting assembly comprising at least one lumbar lifting structure moveably connected to the lumbar support member, and a lumbar lifting actuator operably driving the at least one lumbar lifting structure to move so as to lift (raise) or retract the lumbar support member for providing lumbar support.

2. The lumbar support mechanism of claim 1, wherein the lumbar lifting assembly further comprises a linkage member, and wherein the at least one lumbar lifting structure comprises a first lumbar lifting structure and a second lumbar lifting structure connected to the first lumbar lifting structure by the linkage member, each lumbar lifting structure comprising a fixing bracket, a first leg having an upper end pivotally movably connected to the lumbar support member and a lower end operably movable in the fixing bracket and pivotally connected to the linkage member by a guiding pin, and a second leg having an upper end pivotally connected to a middle portion of the first leg and a lower end pivotally connected to the fixing bracket, such that a distance between the lumbar support member and the linkage member is changeable between a minimal distance and a maximal distance when the linkage member moves between a first position and a second position.

3. The lumbar support mechanism of claim 2, wherein the fixing bracket has a guiding slot having first and second ends, the guiding slot being configured to moveably receive the guiding pin, such that when the guiding pin moves to the first end of the guiding slot, the linkage member moves to the first position, and when the guiding pin moves to the second end of the guiding slot, the linkage member moves to the second position.

4. The lumbar support mechanism of claim 3, wherein each lumbar lifting structure further comprises a bearing member accommodated and operably movable in the fixing bracket, the bearing member being pivotally connected to the lower end of the first leg.

5. The lumbar support mechanism of claim 4, wherein the bearing member comprises at least one sliding block.

6. The lumbar support mechanism of claim 5, wherein the bearing member comprises at least one roller pivotally connected to the lower end of the first leg and the linkage member by the guiding pin that is movably received in the guiding slot of the fixing bracket, such that when the lower end of the first leg is driven to move in the fixing bracket, the guiding pin moves along the guiding slot of the fixing bracket and the at least one roller rotates on a bottom wall of the fixing bracket.

7. The lumbar support mechanism of claim 2, wherein the lumbar lifting actuator pivotally connected to the lower end of the first leg of one of the first and second lumbar lifting structures or the guiding pin that pivotally connects the lower end of the first leg of said one of the first and second lumbar lifting structures to the linkage member for operably driving the linkage member to move between the first position and the second position.

8. The lumbar support mechanism of claim 7, wherein the lumbar lifting actuator comprises a motor member, an outer tube extending from the motor member, and an activation rod received in the outer tube, engaged with the motor member and configured to be telescopically movable relative to the outer tube according to a direction of motor rotation.

9. The lumbar support mechanism of claim 8, wherein the motor member is configured to be attached onto the adjustable bed, and a distal end of the activation rod is pivotally connected to the lower end of the first leg of said one of the first and second lumbar lifting structures or the guiding pin that pivotally connects the lower end of the first leg of said one of the first and second lumbar lifting structures to the linkage member.

10. The lumbar support mechanism of claim 1, further comprising at least one massage member installed on the lumbar support member for providing massage effects.

11. The lumbar support mechanism of claim 10, wherein at least one massage member comprises a vibrator.

12. The lumbar support mechanism of claim 11, wherein at least one massage member further comprises a vibration fixing plate installed in a mounting slot of the lumbar support member, and a buffer sleeved on the vibrator and mounted on the vibration fixing plate.

13. An adjustable bed, comprising: the lumbar support mechanism of claim 1, for operably providing the lumbar support when the lumbar support member is lifted to fit user's lumbar.

14. The adjustable bed of claim 13, wherein the lumbar support mechanism further comprises at least one massage member installed on the lumbar support member for providing massage effects.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings illustrate one or more embodiments of the invention and, together with the written description, serve to explain the principles of the invention. Wherever possible, the same reference numbers are used throughout the drawings to refer to the same or like elements of an embodiment.

[0027] FIG. 1 shows schematically a perspective and exploded view of a lumbar support mechanism usable in ab adjustable bed according to one embodiment of the invention.

[0028] FIG. 2 shows schematically a perspective view of a lumbar lifting assembly of the lumbar support mechanism shown in FIG. 1.

[0029] FIG. 3 shows schematically a perspective view of a lumbar lifting structure of the lumbar lifting assembly shown in FIGS. 1-2.

[0030] FIG. 4A shows schematically a perspective view of a massage member of the lumbar support mechanism shown in FIG. 1.

[0031] FIG. 4B shows schematically an exploded view of the massage member shown in FIGS. 1 and 4A.

[0032] FIG. 5 shows schematically an exploded view of an adjustable bed according to one embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0033] The invention will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals refer to like elements throughout.

[0034] The terms used in this specification generally have their ordinary meanings in the art, within the context of the invention, and in the specific context where each term is used. Certain terms that are used to describe the invention are discussed below, or elsewhere in the specification, to provide additional guidance to the practitioner regarding the description of the invention. For convenience, certain terms may be highlighted, for example using italics and/or quotation marks. The use of highlighting has no influence on the scope and meaning of a term; the scope and meaning of a term is the same, in the same context, whether or not it is highlighted. It will be appreciated that same thing can be said in more than one way.

[0035] Consequently, alternative language and synonyms may be used for any one or more of the terms discussed herein, nor is any special significance to be placed upon whether or not a term is elaborated or discussed herein. Synonyms for certain terms are provided. A recital of one or more synonyms does not exclude the use of other synonyms. The use of examples anywhere in this specification including examples of any terms discussed herein is illustrative only, and in no way limits the scope and meaning of the invention or of any exemplified term. Likewise, the invention is not limited to various embodiments given in this specification.

[0036] It will be understood that when an element is referred to as being on another element, it can be directly on the other element or intervening elements may be present therebetween. In contrast, when an element is referred to as being directly on another element, there are no intervening elements present. As used herein, the term and/or includes any and all combinations of one or more of the associated listed items.

[0037] It will be understood that, although the terms first, second, third etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the invention.

[0038] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms a, an and the are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms comprises and/or comprising, or includes and/or including when used in this specification, specify the presence of stated features, regions, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof.

[0039] Furthermore, relative terms, such as lower or bottom and upper or top, may be used herein to describe one element's relationship to another element as illustrated in the FIGURES. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as being on the lower side of other elements would then be oriented on upper sides of the other elements. The exemplary term lower, can therefore, encompasses both an orientation of lower and upper, depending of the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as below or beneath other elements would then be oriented above the other elements. The exemplary terms below or beneath can, therefore, encompass both an orientation of above and below.

[0040] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0041] It will be understood that when an element is referred to as being on, attached to, connected to, coupled with, contacting, etc., another element, it can be directly on, attached to, connected to, coupled with or contacting the other element or intervening elements may also be present. In contrast, when an element is referred to as being, for example, directly on, directly attached to, directly connected to, directly coupled with or directly contacting another element, there are no intervening elements present. It will also be appreciated by those of skill in the art that references to a structure or feature that is disposed adjacent another feature may have portions that overlap or underlie the adjacent feature.

[0042] As used herein, around, about, substantially or approximately shall generally mean within 20 percent, preferably within 10 percent, and more preferably within 5 percent of a given value or range. Numerical quantities given herein are approximate, meaning that the term around, about substantially or approximately can be inferred if not expressly stated.

[0043] As used in this specification, the term platform refers to a bed board, or a board or panel used for a bed.

[0044] As used in this specification, the phrase at least one of A, B, and C should be construed to mean a logical (A or B or C), using a non-exclusive logical OR. As used herein, the term and/or includes any and all combinations of one or more of the associated listed items.

[0045] Embodiments of the invention are illustrated in detail hereinafter with reference to accompanying drawings. The description below is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. The broad teachings of the invention can be implemented in a variety of forms. Therefore, while this invention includes particular examples, the true scope of the invention should not be so limited since other modifications will become apparent upon a study of the drawings, the specification, and the following claims. For purposes of clarity, the same reference numbers will be used in the drawings to identify similar elements. It should be understood that one or more steps within a method may be executed in different order (or concurrently) without altering the principles of the invention.

[0046] In accordance with the purposes of this invention, as embodied and broadly described herein, this invention, in one aspect, relates to a lumbar support mechanism, and an adjustable bed having the same.

[0047] The lumbar support mechanism includes a lumbar support member, a lumbar lifting assembly comprising at least one lumbar lifting structure moveably connected to the lumbar support member and a lumbar lifting actuator operably driving the at least one lumbar lifting structure to move so as to lift (raise) or retract the lumbar support member, and at least one massage member installed on the lumbar support member for providing massage effects. The lumbar support mechanism can be used in an adjustable bed for operably providing lumbar support and massage effects when the lumbar support member is lifted to fit the user's lumbar.

[0048] Referring to FIGS. 1-5, and particularly to FIGS. 1-3, one embodiment of the lumbar support mechanism 100 is shown according to the invention. In this exemplary embodiment, the lumbar lifting assembly 10 comprises a first lumbar lifting structure 101, a second lumbar lifting structure 101, a lumbar lifting actuator 230, a lumbar support member 240, and a linkage member 250. The use of the dual lumbar lifting structures 101 and 101 connected via the linkage member (transmission rod) 250 and driven by a single lumbar lifting actuator 230 enables synchronized motion and consistent alignment on both ends of the lumbar support member 240.

[0049] The first lumbar lifting structure 101 and the second lumbar lifting structure 101 can be identical or substantially different. The following description illustrates the embodiment of which the first and second lumbar lifting structures 101 and 101 are identical. The same principles apply in the different first and second lifting structures.

[0050] As shown in FIGS. 2-3, each lifting structure 101/101 comprises a fixing bracket 110, a first leg 120, and a second leg 130. The length of the first leg 120 is greater than that of the second leg 130. In other words, the second leg 130 is shorter than the first leg 120. The first leg 120 has an upper end 122 pivotally connected to the lumbar support member 240, and a lower end 121 operably movable in the fixing bracket 110 and pivotally connected to the linkage member 250 by a guiding pin or shaft 155. The second leg 130 has an upper end 132 pivotally connected to a middle portion of the first leg 120, and a lower end 131 pivotally connected to the fixing bracket 110. As such, the distance between the lumbar support member 240 and the linkage member 250 is changeable between a minimal distance and a maximal distance when the linkage member 250 moves between a first position and a second position.

[0051] In one embodiment, the pivotal connection of the upper end 122 of the first leg 120 to the lumbar support member 240 is made by a pivotal shaft 141 that passes through the upper end 122 of the first leg 120 and the connecting bracket 241 of the lumbar support member 240 (FIG. 1). In one embodiment, the connecting bracket 241 is designed to allow for customized adjustments in the position and angle of the lumbar support member 240. It should be noted that other pivotal connection means can also be utilized for the pivotal connection of the upper end 122 of the first leg 120 and the lumbar support member 240.

[0052] The fixing bracket 110 of each of the first lumbar lifting structure 101 and the second lumbar lifting structure 101 is configured to be attached onto the adjustable bed. In one embodiment, the fixing bracket 110 is mounted onto the rear side of a back or waist bed board (platform) of the adjustable bed. It should be noted that the fixing bracket 110 may be mounted onto one or two of the other bed boards/platforms, and/or the frame structure of the adjustable bed in another embodiments.

[0053] In some embodiments, each fixing bracket 110 has a guiding slot 114 defined in the side walls 116 of the fixing bracket 110. The guiding slot 114 has first and second ends 114A and 114B. The guiding slot 114 is configured to moveably receive the guiding pin or shaft 155 that pivotally connects the lower end 121 of the first leg 120 to the linkage member 250, such that when the guiding pin or shaft 155 moves to the first end 114A of the guiding slot 114, the linkage member 250 moves to the first position, and when the guiding pin or shaft 155 moves to the second end 114B of the guiding slot 114, the linkage member 250 moves to the second position.

[0054] In some embodiments, each of the first and second lumbar lifting structures 100 and 110 further comprises a bearing member 150 accommodated and operably movable in the fixing bracket 110. The bearing member 150 is pivotally connected to the lower end 121 of the first leg 120 by the same guiding pin or shaft 155.

[0055] In some embodiments, the bearing member 150 comprises at least one sliding block.

[0056] In other embodiments, the bearing member 150 comprises at least one roller 151 pivotally connected to the lower end 121 of the first leg 120 and the linkage member 250 by the guiding pin or shaft 155 that is movably received in the guiding slot 114 of the fixing bracket 110, such that when the lower end 121 of the first leg 120 is driven to move in the fixing bracket 110, the guiding pin or shaft 155 moves along the guiding slot 114 of the fixing bracket 110 and the at least one roller 151 rotates on a bottom wall of the fixing bracket 110.

[0057] In one exemplary embodiment shown in FIG. 3, the fixing bracket 110 has a bottom wall 115, two sidewalls 116 vertically extended from two opposite, lateral edges of the bottom wall 115, a plurality of mounting tabs 117 horizontally extended from the tops of the sidewalls 116, and two guiding slots 114 each of which is formed in a respective sidewall 116 and parallel to the bottom wall 115. Each guiding slots 114 has the first end 114A proximal to the front end 111 of the sidewall 115, and the second end 114B distal to the front end 111 of the sidewall 115. The fixing bracket 110 is operably attachable to a back or waist bed board/platform of the adjustable bed, e.g., through mounting the plurality of mounting tabs 117 onto the rear surface of the back or waist bed board/platform by screws or pins 118, or other mounting means.

[0058] The first leg 120 has the lower end portion 121 pivotally connected to the bearing member 150 by the guiding pin or shaft 155, which is operably movable on the bottom wall 115 of the fixing bracket 110 in the length direction, and the upper portion 122 pivotally connected to the lumbar support member 240 through the pivotal shaft 141.

[0059] The second leg 130 has the lower end portion 131 pivotally connected to the fixing bracket 110 through a pivotal shaft 135 proximal to the rear end 112 of the of the sidewall 115, and the upper end portion 132 pivotally connected to the middle portion 123 of the first leg 120 through a pivotal shaft 138.

[0060] The bearing member 150 comprises at least one roller 151 disposed between the lower end portion 121 of the first leg 120 and the at least one of the sidewalls 116 of the fixing bracket 110, and the guiding pin or shaft 155 connected to the at least one roller 151 and the lower end portion 121 of the first leg 120 as a pivot and movably received in the at least one guiding slot 114 of the fixing bracket 110. In the exemplary embodiment shown in FIGS. 2-3, the bearing member 150 has two rollers 151, each of which is disposed between the outer surface of the lower end portion 121 of the first leg 120 and the inner surface of the respective sidewall 116 of the fixing bracket 110. Preferably, each roller 151 is in contact with the outer surface of the lower end portion 121 of the first leg 120 and the inner surface of the respective sidewall 116 of the fixing bracket 110, which can increase the friction between the side surface of the roller 151 and the fixing bracket 110 and the first leg 120, and reduce the acceleration when the roller 151 is driven, so that the movement of the lower end portion 121 of the first leg 120 is slower and more stable. Preferably, the roller 151 may be made of materials such as rubber, plastic, etc., to reduce damage to the fixing bracket 110 when the roller 121 moves. The guiding pin or shaft 155 passes through the lower end portion 121 of the first leg 120 and the two rollers 151, with its two end portions respectively received in the guiding slots 114 and extended outside the sidewalls 116. As such, when the lower end portion 121 of the first leg 120 is driven move in the fixing bracket 110 back and forth, the guiding pin or shaft 155 moves along the guiding slots 114 of the fixing bracket 110 between the first end 114A and the second end 114B of the guiding slots 114 and the rollers 151 rotate on the bottom wall 115 of the fixing bracket 110 back and forth accordingly.

[0061] According to some embodiments of the invention, the bearing member 150 is designed such that the rollers 151 can bear all or some of the force or weight exerted on the lower end portion 121 of the first leg 120 during operations of the lumbar support mechanism. In one embodiment, the rollers 151 are designed to have a radius such that when the guiding pin or shaft 155 is received in the guiding slot 114 and moves therein, the guiding pin or shaft 155 is slightly in contact with, or is not in contact with the lower edge 114C of the guiding slot 114. For example, the radius can be greater than H1 but less than H2, where H1 is a height of the lower edge 114C of the guiding slot 114 from the inner surface of the bottom wall 115, and H2 is a height of the upper edge 114C of the guiding slot 114 from the inner surface of the bottom wall 115, as shown in FIG. 3. Accordingly, such a design enables the lower end portion 121 of the first leg 120 to move smoothly in the fixing bracket 110 when it is driven, and the rollers 151 to support the first leg 120 when it is stationary. The friction between the guiding pin or shaft 155 and the lower edge 114C of the guiding slots 114 can be substantially reduced or completely eliminated when the guiding pin or shaft 155 moves the guiding slots 114 or is still in the guiding slots 114, thereby reducing or eliminating the friction caused damage on the lower edge 114C of the guiding slot 114, which enhances the comfort of the user, and prolongs the life of the lifting structure.

[0062] In addition, the center region of the side surface of each roller 151 near the inner surface of the sidewall 116 of the fixing bracket 110 protrudes outward to form a limit ring that wraps the end portions of the guiding pin or shaft 155. The limit ring is extended in the guiding slot 114, with its outer circumferential surface in contact with the lower and upper edges 114C and 114D of the guiding slot 114, so as to further limit the movement of the guiding pin or shaft 155 in the up and down direction.

[0063] In other embodiments, the bearing member 150 can be a sliding block pivotally connected to the lower end portion 121 of the first leg 120 to facilitate the smooth movement of the lower end portion 121 of the first leg 120 on the fixing bracket 110 and limit the sliding track of the sliding block. The sliding block can also be arranged on the left and right sides of the fixing bracket 110, and the sliding block is located on the corresponding side between the inner surface of the sidewall 116 of the fixing bracket 110 and the outer surface of the first leg 120, at the same time, one sidewall of the sliding block abuts against the inner surface of the sidewalls 116 of the fixing bracket 110, and the other side wall abuts against the outer surface of the first leg 120. The operations for the sliding block of the bearing member are same as that disclosed above for the rollers of the bearing member and will not be repeated herein.

[0064] As shown in FIG. 1, the lumbar support member 240 is connected to the upper ends 122 of the first legs 120 of the first lumbar lifting structure 101 and the second lumbar lifting structure 101. The linkage member 250 is pivotally connected to the bearing members 150 and the lower ends 121 of the first lumbar lifting structure 101 and the second lumbar lifting structure 101. As such, the distance between the lumbar support member 240 and the linkage member 250 is operably changeable between a minimal distance and a maximal distance when the linkage member 250 moves between a first position and a second position. In other words, the lumbar support member 240 is operably movable between a retracted position and an ejected (expanded) position when the linkage member 250 moves between the first and second positions. The lumbar support is provided when the lumbar support member 240 is in the ejected position.

[0065] Specifically, two end portions of the linkage member 250 are pivotally connected to the guiding pin or shafts 155 of the bearing members 150 and the lower ends 121 of the first legs 120 of the first lumbar lifting structure 101 and the second lumbar lifting structure 101, respectively. When the guiding pin or shaft 155 moves to the first end 114A of the guiding slot 114, the linkage member 250 moves to the first position and the lumbar support member 240 is in the retracted position, where the distance between the lumbar support member 240 and the linkage member 250 is the minimal distance. When the guiding pin or shaft 155 moves to an opposite, second end 114B of the guiding slot 114, the linkage member 250 moves to the second position and the lumbar support member 240 is in the ejected position, where the distance between the lumbar support member 240 and the linkage member 250 is the maximal distance.

[0066] The lumbar lifting actuator 230 is operably connected to the guiding pin or shaft 155 and thus the bearing member 150 and the lower end 121 of the first leg 120 of one of the first lumbar lifting structure 101 and the second lumbar lifting structure 101 for operably driving the bearing members 150 so as to move the linkage member 250 between the first position and the second position. For example, the lumbar lifting actuator 230 is connected to the guiding pin or shaft 155 and thus the bearing member 150 and the lower end 121 of the first leg 120 of the first lumbar lifting structure 101 in the embodiment shown in FIG. 2. The lumbar lifting actuator 230 comprises a motor member 231, an outer tube 232 extending from the motor member 231, and an activation rod 233 received in the outer tube 232, engaged with the motor member 231 and configured to be telescopically movable relative to the outer tube 232 according to a rotation direction of the motor member 231. A distal (free) end of the activation rod 233 is pivotally connected to the lower end portion 121 of the first leg 120, or pivotally connected to the guiding pin or shaft 155 of the bearing members 150 of the first lumbar lifting structure 101. In other embodiments, the activation rod 233 can also be driven by hydraulic pressure or pneumatic pressure. The lumbar lifting actuator 230 also comprises a mounting bracket 234 connected to the motor member 231. The mounting bracket 234 is used to secure the lumbar lifting actuator 230 onto the back or waist bed board/platform by screws or pins 235 for example.

[0067] When the motor member 231 drives the activation rod 233 to make an extension motion, the extension motion drives the lower end portion 121 of the first leg 120 and thus the guiding pin or shaft 155 to move forward, i.e., a direction of which the guiding pin or shaft 155 moves in the guiding slot 114 from the first end 114A to the second end 114B. The roller 151 rolls on the fixing bracket 110, and at the same time, the linkage member 250 drives the first leg 120 of the second lifting structure 101 to move synchronously with the first leg 120 of the first lumbar lifting structure 101, then the upper ends 122 of the first legs 120 of the first lumbar lifting structure 101 and the second lumber lifting structure 101 are both lifted upward, and the lumbar support member 240 pivotally connected to the upper ends 122 of the first legs 120 of the first lumbar lifting structure 101 and the second lumbar lifting structure 101 is lifted upward accordingly. When the driving motor 231 is stopped, the lumbar support member 240 is supported by the rollers 151 at the lower end 121 of the first leg 120, and the lower end 131 of the second leg 130 of the first and second lumbar lifting structures 101 and 101. During this process, the rolling of the rollers 151 of the first leg 120 makes the lumbar support member 240 rise smoothly, and the rollers 151 at the lower end 121 of the first leg 120, and the lower end of the second leg 130 support the upper lumbar support member 240. This can reduce the damage to the guiding slot edge of the fixing bracket 110 and the guiding pin or shaft 155 in the first and second lumbar lifting structures 101 and 101, prolong the life of the lifting assembly, and reduce the maintenance frequency of the lumbar support mechanism.

[0068] As disclosed above, in one embodiment, the rollers 151 are disposed on both sides of the fixing bracket 110, and located between the outer surface of the sidewall 116 of the first leg 120 and the inner side surface of the fixing bracket 110 such that the outer wheel surfaces of the rollers 151 abut against the outer surface of the first leg 120 and the inner surface of the sidewall 116 of the fixing bracket 110, respectively. This arrangement can limit the movement trajectory of the rollers 151, and at the same time, can increase the friction between the side surfaces of the rollers 151 and the sidewalls 116 of the fixing bracket 110 and the first leg 120, reduce the acceleration when the rollers 151 is driven, and thus enable the lumbar support member 240 to be more gentle in the process of being lifted. Further, the lumbar/waist of the user is supported on the lumbar support member 240, which can improve the comfort of the user when the height of the lumbar support member 240 is changed, and enhance the user experience.

[0069] In some embodiments, as shown in FIG. 2, a connecting bracket 260 is provided for connecting the activation/push rod 233 of the motor member 231 and the guiding pin or shaft 155 of the lumbar lifting structure 101. The connecting bracket 260 and the free end of the activation rod 233 are detachably connected, while the connecting bracket 260 and the guiding pin or shaft 155 are pivotally connected. This arrangement, compared with direct connection of the activation rod 233 to the lumbar lifting structure 101, facilitates easily maintenance of the lumbar support mechanism. For example, when the driving motor 231 needs to be replaced, one only needs to disassemble the activation rod 233 of the driving motor 231 from the connecting bracket 260 to remove the driving motor 231, which avoids the need for disassembling the guiding pin or shaft 155 of the lumbar lifting structure 101. In this embodiment, the connecting bracket 260 and the activation rod 233 of the driving motor 231, the connecting bracket 260 and the guiding pin or shaft 155 are all connected by screws or pins.

[0070] In addition, in some embodiments, the lumbar support mechanism 100 also includes two massage members 260 installed on the lumbar support member 240 for providing massage effects when the lumbar support member 240 is lifted to fin the user's lumbar for providing the lumbar support.

[0071] In one embodiment shown in FIGS. 1 and 4A-4B, each massage member 260 includes a vibrator 261 for operably providing the massage effects, a buffer (cushioning) sleeve 262 sleeved on the vibrator 261, and a vibration fixing plate 263 installed in a mounting slot 245 of the lumbar support member 240. The vibration fixing plate 263 has a housing 363a in which the vibrator 261 sleeved in the buffer sleeve 262 is accommodated. The bottom of the housing 363a is sealed with an elastic fixing strap (belt) 264.

[0072] Briefly, the lumbar support and massage mechanism 100, when in use, operates through the lumbar lifting actuator 230 that drives a lumbar lifting assembly to lift (raise) or retract the lumbar support member, which ensures that the support closely conforms to the user's lower back. Additionally, when the lumbar support member is in contact with the user's lower back, a vibrator is used to massage the area, thereby relieving fatigue and promoting lower back health.

[0073] Referring to FIG. 5, the adjustable bed utilizing the lumbar support mechanism 100 disclosed above is shown according to one embodiment of the invention. The adjustable bed includes a fame structure having a back frame and a foot frame connected to each other, a plurality of bed boards/platforms disposed on the fame structure, a back lifting assembly including a back lifting bracket and a back lifting actuator, a foot lifting assembly having a leg lifting bracket and a foot lifting actuator, and a lumbar support mechanism.

[0074] In one embodiment, the bed boards/platforms include a back platform 31, a waist/lumbar platform 32, a seat platform 33 mounted on the frame structure, and a leg platform 34. The upper end of the waist platform 32 is hinged to the back platform 31, while the lower end of the waist platform 32 is hinged to the upper end of the seat platform 33. The lower end of the seat platform 33 is hinged to the upper end of the leg platform 34. The back platform 31 abuts against the back lifting bracket, while the leg platform 34 abuts against the leg lifting bracket.

[0075] The waist platform 32 has one or more openings 32a defined corresponding to a lumber portion of a user. In the exemplary embodiment shown in FIG. 5, the lumbar support member 240 and the lumbar lifting assembly are located respectively in the front side and the rear side of the waist platform 32, and the one or more openings includes two openings 32a defined for facilitating lifting and retraction of the first and second lumbar lifting structures 101 and 101, respectively. In other embodiments, the one or more openings include a single long opening defined for accommodating the lumber support member 240 when the lumbar lifting assembly is retracted.

[0076] In other embodiments, the one or more openings can be defined in the back platform 31 for accommodating the lumber support member 240.

[0077] The back frame 13 includes an upper back frame rail 13a, a lower back frame rail 13b, and a pair of side back frame rails 13c and 13d. The upper back frame rail 13a and the lower back frame rail 13b are longitudinally spaced and transversely extended, and the pair of side back frame rails 13c and 13d is transversely spaced and longitudinally extended, and rigidly connected to the upper back frame rail 13a and the lower back frame rail 13b, such that the upper back frame rail 13a and the lower back frame rail 13b and the pair of side back frame rails 13c and 13d are in a rectangle form. In one embodiment, the connection of the pair of side back frame rails 13c and 13d to the upper and lower back frame rails 13a and 13b is by welding ends of the upper back frame rail 13a onto end portions of the pair of side back frame rails 13c and 13d, and welding ends of the lower back frame rail 13b onto opposite end portions of the pair of side back frame rails 13c and 13d. Other connecting means such as screw connections can also be utilized to practice the invention.

[0078] The back lifting assembly has a back lifting bracket 14 pivotally connected to the back frame 13, and a back lifting actuator pivotally connected between the back lifting bracket 14 and the back frame 13 for operably driving the back lifting bracket 14 to pivotally move in an upward rotating direction or a downward rotating direction relative to the back frame 13.

[0079] In one embodiment, the back lifting bracket 14 includes a middle bar 14a and a pair of swing arms 14b and 14c. Each of the pair of swing arms 14b and 14c is in an arc-shaped design. The pair of swing arms 14b and 14c is transversely spaced and longitudinally extended, and rigidly connected to ends of the transversely extending middle bar 14a in an H-shaped form. Each of the pair of swing arms 14b and 14c has a first end portion and an opposite, second end portion. The first end portion of each swing arm 14b or 14c is pivotally mounted to a respective one of the side back frame rails 13c and 13d of the back frame 13 through a pivot 14c. The second end portion of at least one of the swing arms 14b and 14c is equipped with a first lifting wheel 14g and a second lifting wheel 14h, as shown in FIG. 4. Practically, the second end portion of the swing arms 14c may also be equipped with the first lifting wheel 25 and the second lifting wheel 14f. In addition, each of the pair of swing arms 14b and 14c may be reinforced by a pair of reinforcing pieces 14d rigidly connected to an end portion of the middle bar 14a on either side.

[0080] The back lifting actuator includes a motor member 26, an outer tube 26a extending from the motor member 26, and an activation rod 26b received in the outer tube 26a, engaged with the motor member 26 and configured to be telescopically movable relative to the outer tube 26a according to a direction of motor rotation. The motor member 26 is pivotally connected to the upper back frame rail 13a of the back frame 13 through a first bracket 26c. The activation rod 26b has a distal end portion pivotally connected to the middle bar 14a of the back lifting bracket 14 through a second bracket 26d. Accordingly, when the activation rod 26b is expanded, it drives the back lifting bracket 14 to rotate in an upward rotation direction along the pivot point 14e at in the first end portion of each swing arm 14b/14c of the back lifting bracket 14, which in turn causes the back platform 31 to sildably move against the back lifting wheels 14f and 14g in the same upward rotation direction. When the activation rod 26b is contracted, it drives the back lifting bracket 14 to rotate in a downward rotation direction along the pivot point at the first end portion of each swing arm 14b/14c of the back lifting bracket 14, which in turn causes the back platform 1 to sildably move against the back lifting wheels 14f and 14g in the same downward rotation direction.

[0081] The foot frame 17 includes an upper foot frame rail 17a, a lower foot frame rail 17b, and a pair of side foot frame rails 17c and 17d. The upper foot frame rail 17a and the lower foot frame rail 17b are longitudinally spaced and transversely extended, and the pair of side foot frame rails 17c and 17d is transversely spaced and longitudinally extended, and rigidly connected to the upper foot frame rail 17a and the lower foot frame rail 17b, such that the upper foot frame rail 17a and the lower foot frame rail 17b and the pair of side foot frame rails 17c and 17d are in a rectangle form. In one embodiment, the connection of the pair of side foot frame rails 17c and 17d to the upper and lower foot frame rails 17a and 17b is by welding ends of the upper foot frame rail 17a onto end portions of the pair of side foot frame rails 17c and 17d, and welding ends of the lower foot frame rail 17b onto opposite end portions of the pair of side foot frame rails 17c and 17d. Other connecting means such as screw connections can also be utilized to practice the invention.

[0082] The foot lifting assembly has a foot lifting bracket 19 pivotally connected to the foot frame 17, and a foot lifting actuator pivotally connected between the foot lifting bracket 19 and the foot frame 17 for operably driving the foot lifting bracket 19 to pivotally move in an upward rotating direction or a downward rotating direction relative to the foot frame 17.

[0083] The foot lifting bracket 19 includes a middle bar 19a and a pair of swing arms 19b and 19c. The pair of swing arms 19b and 19c is transversely spaced and longitudinally extended, and rigidly connected to ends of the transversely extending middle bar 19a in an H-shaped form. Each of the pair of swing arms 19b and 19c has a first end portion and an opposite, second end portion. The first end portion of each swing arm 19b or 19c is pivotally mounted to a respective one of the side foot frame rails 17c and 17d of the foot frame 17 through a pivot 19e. The second end portion of at least one of the swing arms 19b and 19c is equipped with a foot lifting wheel 19f. Practically, the second end portion of the swing arm 19b may also be equipped with the foot lifting wheel 19f. In addition, each of the pair of swing arms 19b and 19c may be reinforced by a reinforcing piece 19d rigidly connected to each end portion of the middle bar 19a.

[0084] The foot lifting actuator includes a motor member 21, an outer tube 21a extending from the motor member 21, and an activation rod 21b received in the outer tube 21a, engaged with the motor member 21 and configured to be telescopically movable relative to said outer tube 21a according to a direction of motor rotation. The motor member 21 is pivotally connected to the upper foot frame rail 17a of the foot frame 17 through a first bracket 21c. The activation rod 21b has a distal end portion pivotally connected to the middle bar 19a of the foot lifting bracket 19 through a second bracket 21d. As such, when the activation rod 21b is expanded, it drives the foot lifting bracket 19 to rotate in an upward rotation direction along the pivot point 19e at in the first end portion of each swing arm 19b/19c of the foot lifting bracket 19, which in turn causes the leg platform 34 to sildably move against the foot lifting wheels 19f in the same upward rotation direction in a desired adjusting position. When the activation rod 21b is contracted, it drives the foot lifting bracket 19 to rotate in a downward rotation direction along the pivot point 19c at in the first end portion of each swing arm 19b/19c of the foot lifting bracket 19, which in turn causes the leg platform 34 to sildably move against the foot lifting wheels 19f in the same downward rotation direction in a flat position when the activation rod 21b is contracted at most.

[0085] In certain embodiments, the lumbar support mechanism is secured to the rear side of the adjustable bed for operably providing lumbar support. In the exemplary embodiment shown in FIG. 5, the lumbar support mechanism 100 is received in the openings 32a of the waist platform 32 and secured to the back side of the waist platform 32 for operably providing lumbar support. Specifically, the fixing brackets 110 of the first and second lumbar lifting structures 101 and 101 are mounted on the rear side of the waist platform 32 through the mounting tabs 117 with the screws or pins 118, while the lumbar lifting actuator 230 is mounted on the rear side of the waist platform 32 through the mounting bracket 234 with the screws or pins 235. The lumbar support member 240 is located on the front side of the waist platform 32. The upper ends 122 of the first legs 120 of the first and second lumbar lifting structures 101 and 101 are moveably received in the two openings 32a of the waist platform 32, respectively, such that when the lumbar support member 240 is in the retracted position, it abuts against the waist platform 32, and when in the ejected (expanded) position, the lumbar support member 240 is distanced from the waist platform 32 to provide the lumbar support to the user. It should be noted that the openings 32a can also be formed so that the lumbar support member 240 is received in the openings when it is in the retracted position, and when in the ejected (expanded) position, the lumbar support member 240 is distanced from the waist platform 32 to provide the lumbar support to the user.

[0086] In other embodiments, the opening 32a can be defined in the back platform 31, and the lumbar support mechanism is received in the opening of the back platform 31 and secured to the back side of the back platform 31 for accommodating the lumber support member.

[0087] As such, when the back lifting assembly drives the back platform (backrest) 31 to accommodate different user postures, the lumbar support and massage mechanism 100 adjusts, either lifting (raising) or retracting, to fit the user's posture, which ensures that the lumbar support member 240 always maintains contact with the user's lower back (lumbar section), and meanwhile provides the lumbar support and massage effects, thereby reducing the risk of inadequate support due to posture changes and further enhancing the user experience.

[0088] As described above, the adjustable bed with the lumbar support and massage mechanism according to embodiments of the invention offers the following advantages and beneficial effects:

[0089] Dual Functionality: The lumbar support and massage mechanism 100 not only provides lumbar support but also includes a massage function, enhancing the user experience.

[0090] Electric Control: The use of an electric actuator (lumbar lifting actuator 230) allows the lumbar support member 240 to automatically lift (raise) or retract, accommodating different user needs and preferences.

[0091] Structural Stability: The design of the lumbar support linkage mechanism, which uses a fixing brackets 110, the guiding pins or shafts 155, and a linkage rod (member) 250, ensures stable movements of the lumbar support.

[0092] Synchronized Motion: The dual lumbar lifting structures 101 and 101 are connected via the transmission rod (linkage member) 250, enabling synchronized motion and consistent alignment on both sides (end portions) of the lumbar support member 240.

[0093] Personalized Adjustment: The connecting bracket 241 of the lumbar support member 240 is designed to allow for customized adjustments in the position and angle of the lumbar support member 240.

[0094] Enhanced Massage Components: The combined use of a vibrator 261, cushioning sleeve 262, vibration fixing plate 263, and elastic fixing strap 264 provides a comfortable and effective massage experience.

[0095] Electric Bed Integration: The integration of the lumbar support and massage mechanism with the adjustable bed offers a comprehensive smart bed solution.

[0096] Posture Adaptability: The lumbar support member 240 works in coordination with the back lifting assembly, adjusting its position according to the angle of the back board 31 to maintain close contact with the user's lower back.

[0097] Improved Comfort: The adjustable lumbar support and massage functions enhance the overall comfort of the adjustable bed.

[0098] Optimized Bed Board Structure: The bed boards includes a back board 31, lumbar (waist) board 32, and seat board 33 connected via hinges, allowing multi-angle adjustments to suit different postures.

[0099] Drive Mechanism Design: The use of the back lifting actuator and the leg lifting actuator enables individual adjustments of the back board 31 and the leg board 34, offering full-body support.

[0100] Synchronized Linkage Mechanisms: The design of the back lifting bracket and the leg lifting bracket ensures synchronized and stable movement of both the back board 31 and the leg board 34.

[0101] According to the invention, the lumbar support and massage mechanism provides dual support and massage benefits. The lumbar support linkage mechanism ensures stability and synchronization, while integration into an adjustable bed further enhances the user experience. With its adaptive design, the lumbar support member can be automatically adjusted to the back board's tilt angle, maintaining close contact with the user's lower back. Additionally, the optimized structure of the bed boards and the application of the back and leg lifting mechanisms (assemblies) enable multi-position adjustments, offering comprehensive support. Overall, this lumbar support and massage mechanism and adjustable bed combine intelligent and user-centric features, overcoming the limitations of existing lumbar support designs and providing a more comfortable and healthier sleep and rest experience. Therefore, this invention effectively addresses the shortcomings of current technologies and holds significant commercial value.

[0102] The foregoing description of the exemplary embodiments of the invention has been presented only for the purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching.

[0103] The embodiments were chosen and described in order to explain the principles of the invention and their practical application so as to enable others skilled in the art to utilize the invention and various embodiments and with various modifications as are suited to the particular use contemplated. Alternative embodiments will become apparent to those skilled in the art to which the invention pertains without departing from its spirit and scope. Accordingly, the scope of the invention is defined by the appended claims rather than the foregoing description and the exemplary embodiments described therein.