BICYCLE FOR BED

Abstract

The present disclosure relates to a bed bike that maintains a lower extremity posture of a user with weak lower extremity muscles strength. An embodiment of the present disclosure disclosures a bed bike including a body including a rotating member; a first fixing portion, positioned on one side of the body and holding a thigh of a user so that a knee of the user does not spread outward more than a predetermined distance from a first line drawn straight from a hip joint to an ankle of the user; and a second fixing portion connected to the rotating member and supporting a lower leg of the user so that the knee of the user is not brought inward from the first line.

Claims

1. A bed bike comprising: a body including a rotating member; a first fixing portion placed on one side of the body and holding a thigh of a user so that a knee of the user does not spread outward more than a predetermined distance from a first line drawn straight from a hip joint to an ankle of the user; and a second fixing portion connected to the rotating member and supporting a lower leg of the user so that the knee of the user is not brought inward from the first line.

2. The bed bike of claim 1, wherein the body further comprises a controller capable of adjusting an exercise intensity.

3. The bed bike of claim 1, wherein the first fixing portion comprises: a column arranged on one side of the body; a thigh strap holding a part of the thigh of the user; and a connecting member provided between the column and the thigh strap.

4. The bed bike of claim 3, wherein the connecting member comprises: a connecting line of which one end is connected to one side of the thigh strap and the other end is connected to the column; and a line winder in which the connecting line is wound and which is capable of adjusting a length of the connecting line.

5. The bed bike of claim 4, wherein the line winder comprises: a button, so that, when the button is pressed, a length of the connecting line is reduced as the connecting line is wound inside the line winder, when the button is pressed and the connecting line is pulled at the same time, the connecting line wound inside the line winder is released and lengthened, and when the button is not pressed, the connecting line is fixed.

6. The bed bike of claim 3, wherein a position of a first point at which the column contacts the connecting member is adjustable.

7. The bed bike of claim 6, wherein the first point is between a second line and a third line, the second line passing through the knee which is closer to the body among both knees of the user, and being perpendicular to the ground and the third line passing through a center of the rotating member and being perpendicular to the ground.

8. The bed bike of claim 1, wherein the second fixing portion comprises: a lower leg strap holding a part of the lower leg of the user; a footrest connected to the lower leg strap and supporting a foot of the user; and a crank connecting the rotating member to the footrest.

9. The bed bike of claim 8, wherein the lower leg strap comprises a lower leg fixing plate surrounding a part of the lower leg of the user; and a fixed column in which the lower leg fixing plate is placed at one end and one side of the footrest is in contact at the other end.

10. The bed bike of claim 9, wherein the lower leg fixing plate comprises a first fixing member provided on one side of the lower leg fixing plate and including a plurality of grooves; and a second fixing member provided on the other side of the lower leg fixing plate so as to face the first fixing member and fastened to one of the plurality of grooves.

11. The bed bike of claim 9, wherein the lower leg fixing plate comprises a Velcro wrapping around the lower leg of the user together with the lower leg fixing plate and fixing the lower leg of the user to the lower leg fixing plate.

12. The bed bike of claim 9, wherein the fixed column is adjustable in height.

13. The bed bike of claim 8, wherein the second fixing portion further comprises a joint member disposed between the lower leg strap and the footrest.

14. The bed bike of claim 13, wherein a center line passing through a center of the lower leg strap is rotatable around the joint member as a rotation axis.

15. The bed bike of claim 1, further comprising: a support member provided on the other side of the body and fixing the body to a bed rail.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0008] FIG. 1 is a perspective view illustrating a bed bike according to an embodiment of the present disclosure.

[0009] FIG. 2 is a plan view illustrating a user using a bed bike according to the present disclosure, together with main skeletons of lower extremities of a user.

[0010] FIG. 3 is a front view illustrating a user using a bed bike according to an embodiment of the present disclosure.

[0011] FIG. 4 illustrates a first fixing portion according to another embodiment of the present disclosure.

[0012] FIG. 5 is a plan view illustrating a principle of maintaining a posture of a user by a first fixing portion according to an embodiment of the present disclosure.

[0013] FIG. 6 is a right side view illustrating a first fixing portion holding a right thigh of a user, according to an embodiment of the present disclosure.

[0014] FIG. 7 is a front view illustrating a position of a first fixing portion according to an embodiment of the present disclosure.

[0015] FIG. 8 illustrates a lower leg strap according to an embodiment of the present disclosure.

[0016] FIG. 9 illustrates a lower leg strap according to another embodiment of the present disclosure.

[0017] FIG. 10 illustrates a second fixing portion according to another embodiment of the present disclosure.

[0018] FIG. 11 illustrates a principle of maintaining a posture of a user by a second fixing portion according to an embodiment of the present disclosure.

[0019] FIG. 12 is a left side view illustrating a second fixing portion holding a left lower leg of a user, according to an embodiment of the present disclosure.

[0020] FIG. 13 illustrates a footrest according to an embodiment of the present disclosure.

[0021] FIG. 14 illustrates a footrest according to another embodiment of the present disclosure.

[0022] FIG. 15 shows a range in which a center line rotates with respect to a vertical line in a second fixing portion according to an embodiment of the present disclosure.

[0023] FIG. 16 is a front view illustrating a bed bike according to another embodiment of the present disclosure.

BEST MODE FOR CARRYING OUT THE INVENTION

[0024] An embodiment of the present disclosure discloses a bed bike including a body including a rotating member; a first fixing portion placed on one side of the body and holding a thigh of a user so that a knee of the user does not spread outward more than a predetermined distance from a first line drawn straight from a hip joint to an ankle of the user; and a second fixing portion connected to the rotating member and supporting a lower leg of the user so that the knee of the user is not brought inward from the first line.

Mode for the Invention

[0025] As the present disclosure allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present disclosure to particular modes of practice, and it is to be appreciated that all changes, equivalents, and substitutes that do not depart from the spirit and technical scope of the present disclosure are encompassed in the present disclosure. In describing the present disclosure, the same identification numbers are used for the same components even though the components are shown in different embodiments.

[0026] Hereinafter, embodiments of the present disclosure are described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same drawing reference numerals and a description already given therefor is omitted.

[0027] In the embodiments below, the terms first, second, etc. are not intended to be limiting, but are used for the purpose of distinguishing one component from another.

[0028] In the embodiments below, singular expressions include plural expressions unless the context clearly indicates otherwise.

[0029] In the embodiments below, terms such as include or have mean that a feature or component described in the specification is present, and do not preclude the possibility that one or more other features or components may be added.

[0030] In the drawings, the sizes of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawing are arbitrarily shown for convenience of explanation, and therefore the present disclosure is not necessarily limited to what is shown.

[0031] When an embodiment is implementable in another manner, a predetermined process order may be different from a described one. For example, two processes described sequentially may be performed substantially simultaneously, or may proceed in the reverse order from that described.

[0032] The terminology used in this application is used only to describe particular embodiments and is not intended to limit the present disclosure. In this application, it should be understood that terms such as include or have are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, and do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0033] In the following embodiments, when it is said that a film, region, component, etc. are connected, it includes not only a case where the films, regions, and components are directly connected, but also a case where other films, regions, and components are between the films, regions, and components and are indirectly connected. For example, when it is said in this specification that a film, region, component, etc. are electrically connected to each other, it includes not only cases where the film, region, component, etc. are directly electrically connected to each other, but also cases where another film, region, component, etc. is between the film, region, component, and so on and they are indirectly electrically connected to each other.

[0034] Hereinafter, a bed bike according to an embodiment of the present disclosure is described with reference to FIGS. 1 to 16.

[0035] FIG. 1 is a perspective view illustrating a bed bike 1 according to an embodiment of the present disclosure. FIG. 2 is a plan view illustrating a user using the bed bike 1 according to the present disclosure, together with main skeletons of the lower extremities of the user. FIG. 3 is a front view illustrating a user using the bed bike 1 according to an embodiment of the present disclosure.

[0036] Referring to FIG. 1, the bed bike 1 may include a body 100, a first fixing portion 200, and a second fixing portion 300.

[0037] The body 100 may include a rotating member 110. Inside the body 100, a load forming member (not shown) capable of applying a load to the rotating member 110 and a belt or a chain connecting the load forming member to the rotating member 110 may be included. Accordingly, a certain amount of force is to be applied to the rotating member 110 to rotate the rotating member 110. A user may rotate the rotating member 110 by applying force to the rotating member 110 using a lower extremity, and at the same time, the lower extremity muscle strength of the user may be improved.

[0038] The rotating member 110 may rotate as the force applied by the user using the lower extremity is transmitted thereto in the form of rotational force. The rotating member 110 may be arranged on one side of the body 100. The rotating member 110 may have a disk shape. A material of the rotating member 110 is not particularly limited. In an embodiment, a part of the rotating member 110 may be made of steel for durability due to a nature of the rotating member 110 being subjected to repeated forces.

[0039] The rotating member 110 may be connected to the load forming member arranged inside the body 100 by the belt or the chain. As the load forming member transmits the load to the rotating member 110 through the belt or the chain, an amount of force required to rotate the rotating member 110 may vary.

[0040] Referring to FIG. 1, a shape of the body 100 may be in the form of a plate having a constant thickness in a Y-axis direction, and a shape of the plate may have one side formed into a curve following the shape of the rotating member 110. However, this is only an embodiment, and the shape of the body 100 is not particularly limited as long as it does not have a shape that may hinder the user from transmitting force to the rotating member 110 using the lower extremity.

[0041] The body 100 may further include a controller 120. The controller 120 may adjust an exercise intensity of the bed bike 1. The controller 120 may be arranged inside the body 100.

[0042] A method by which the controller 120 adjusts the exercise intensity is not particularly limited. As an embodiment, by increasing the load formed from the load forming member connected to the rotating member 110 via a belt or chain, the amount of force applied by the user to rotate the rotating member 110 may be increased. In another embodiment, by increasing a strength of a brake that generates frictional force on the rotating member 110 and thereby increasing the frictional force transmitted to the rotating member 110, the amount of force required by the user to rotate the rotating member 110 may be increased.

[0043] As an embodiment, a screen display device (not shown) may be included on one side of the surface of the body 100. The screen display device may display an exercise level in real time depending on a current load status of the bed bike 1 and may be equipped with a display and a touch panel that may input user instructions. For example, the controller 120 may be connected to the screen display device. Alternatively, the screen display device may be provided on the outside of the bed bike 1. The user may adjust the exercise intensity of the bed bike 1 through the screen display device. The controller 120 may control a load forming member depending on the exercise intensity input by the user.

[0044] Through the controller 120, the user may set the exercise intensity that matches his or her lower extremity muscle strength level and exercise. That is, the bed bike may be used by all users with different lower extremity muscle strength levels.

[0045] The body 100 may include a support 130. The support 130 may be arranged at the bottom of the body 100, and a plurality of supports may be included. As an embodiment, the support 130 may be in the shape of a long rod. A shape of the cross-section of the support 130 is depicted as circular in FIG. 1, but is not particularly limited thereto. A longitudinal direction of the support 130 may be perpendicular to a plate formed by the body 100. The support 130 may play a supporting role so that the bed bike 1 may be stably positioned on the bed without falling to the left or right even when subjected to external force. Accordingly, the user may use the bed bike 1 safely and stably.

[0046] Referring to FIGS. 1 and 2, the first fixing portion 200 is on one side of the body 100 and may hold a thigh F of the user so that a knee K of the user does not turn outward more than a predetermined distance from a first line I drawn straight from a hip joint C to an ankle A of the user. The first fixing portion 200 may include a column 210, a thigh strap 220, and a connecting member 230.

[0047] The column 210 may be arranged on one side of the body 100. Referring to FIG. 1, the column 210 may connect the body 100 and the thigh strap 220 to be described below, to each other In detail, the column 210 may connect a first point 240 to the body 100 and at the same time fix a position of the first point 240. The first point 240 refers to a point on the column 210 where the column 210 contacts the connecting member 230.

[0048] The specific shape of the column 210 is not particularly limited. In an embodiment, as illustrated in FIG. 1, the column 210 may include a plurality of circular members. The plurality of circular members may include a first member 211 centered on the first point 240 and a second member 212 supporting the first member 211.

[0049] The thigh strap 220 may hold a part of the thigh F of the user. The thigh strap 220 may be connected to the column 210 by the connecting member 230 described below. The thigh strap 220 may have a rectangular shape with a length greater than a width. The thigh strap 220 may have a length sufficient to surround the thigh F of an adult male at least once. The thigh strap 220 may be provided with a Velcro at both ends in the longitudinal direction. Using the Velcro, the thigh strap 220 may be adjusted in length to fit the thickness of the thigh F of the user, while the thigh strap 220 may hold the part of the thigh F of the user. The thigh strap 220 may be made of an elastic fabric material so as to gently wrap around the part of the thigh F of the user.

[0050] The connecting member 230 may be provided between the column 210 and the thigh strap 220. One end of the connecting member 230 may be in contact with the first point 240 on the column 210, and the other end of the connecting member 230 may be in contact with one surface of the thigh strap 220. The connecting member 230 may include a freely bendable string, rope or wire. The connecting member 230 may limit the range of movement of the thigh strap 220 so that a distance between the first point 240 and the thigh strap 220 does not exceed a certain distance.

[0051] The connecting member 230 may be symmetrical on the left and right with respect to the body 100.

[0052] FIG. 4 illustrates a first fixing portion 200a according to another embodiment of the present disclosure.

[0053] Referring to FIG. 4, a connecting member 230a may include a connecting line 231 and a line winder 232.

[0054] The connecting line 231 may have one end connected to one side of the thigh strap 220 and the other end connected to the column 210. The connecting line 231 may include a freely bendable string, rope or wire. The connecting line 231 may include a material that is not very elastic and thus does not easily stretch. That is, when the connecting line 231 is not taut, the thigh F of the user held by the thigh strap 220 connected to one end of the connecting line 231 may move without restriction. On the other hand, when the connecting line 231 is in a taut state, the thigh F of the user held by the thigh strap 220 connected to one end of the connecting line 231 may not move any further in the longitudinal direction of the connecting line 231.

[0055] The connecting line 231 may have the same length on the left and right sides with respect to the body 100.

[0056] The connecting line 231 is wound inside the line winder 232, and the line winder 232 may adjust the length of the connecting line 231. Because each user has a different body shape, the constant length that is to be maintained between the first point 240 and the thigh F may vary. By adjusting the length of the connecting line 231, users of various body types may use the thigh strap 220.

[0057] There is no particular limitation on a method of adjusting the length of the connecting line 231. As an embodiment, the line winder 232 may include a button 233. When the button 233 is pressed, the length of the connecting line 231 may decrease as the connecting line 231 is wound inside the line winder 232. When the button 233 is pressed and the connecting line 231 is pulled at the same time, the connecting line 231 wound inside the line winder 232 is released, and the connecting line 231 may be lengthened. When the button 233 is not pressed, the connecting line 231 may be fixed. Accordingly, the length of the connecting line 231 may be easily adjusted.

[0058] FIG. 5 is a plan view illustrating a principle of maintaining a posture of the user by the first fixing portion 200 according to an embodiment of the present disclosure. FIG. 6 is a right side view illustrating the first fixing portion 200 holding a right thigh F of the user according to an embodiment of the present disclosure.

[0059] The principle of maintaining the posture of the user by the first fixing portion 200 is described below.

[0060] First, an operation situation of the user illustrated in FIGS. 5 and 6 is described as follows. In FIGS. 5 and 6, the right lower extremity of the user is illustrated on the left with respect to the bed bike 1 in the drawings, and the left lower extremity of the user is illustrated on the right with respect to the bed bike 1 in the drawings. The user is pushing a footrest 320 on the left side by applying force to the left lower extremity. At the same time, the left knee straightens. The right lower extremity of the user is supported by the footrest 320 on the right side and the right knee is bent.

[0061] When lower extremity muscle strength is transmitted to the bike, the lower extremity muscle strength may be exerted best when the knee K is above the first line I drawn straight from the hip joint C to the ankle A, as shown in FIG. 2. That is, the hip joint C, the knee K, and the ankle A are to be in a straight line to use the power of the lower extremities efficiently and stably. Therefore, the correct posture for strengthening lower extremity muscle strength is when the knee K is above the first line I.

[0062] As described above, the user may adjust the length of the connecting member 230 so that the rotating member 110 may be rotated without being restricted by the thigh strap 220 while maintaining the knee K above the first line I. That is, when the knee K of the user is above the first line I, the connecting member 230 has some room and therefore does not become taut.

[0063] However, when the lower extremity muscles are weak, the knee K tends to spread outward when the knee K is bent, as shown by the knee K on the right in FIG. 5. The situation illustrated in FIGS. 5 and 6 is one in which the right knee K of the user with weak lower extremity muscle strength is bent while the right knee K is slightly spread outward. In this case, the right knee K is spread outward from the first line I, so the connecting member 230 becomes tight. Due to the tightened connecting member 230, the right thigh F of the user is held by the thigh strap 220 connected to the connecting member 230, so that the right knee K of the user may no longer be spread outward

[0064] When there is no first fixing portion 200, the right knee K of the user, which is in a bent state and is with weak lower extremity muscle strength, may be further spread outward from the first line I, as indicated by the dotted lines in FIGS. 5 and 6. However, when there is the first fixing portion 200, the first fixing portion 200 may hold the thigh F of the user so that the knee K of the user does not spread outward more than a predetermined distance from the first line I. Therefore, the first fixing portion 200 may help the user maintain a correct posture to strengthen the lower extremity muscle strength.

[0065] The predetermined distance may vary by adjusting the length of the connecting member 230. For example, the predetermined distance may be 0 to 10 cm outward from the first line I. Preferably, the predetermined distance may be 0 to 5 cm outward from the first line I. It is most desirable to adjust the length of the connecting member 230 so that the predetermined distance becomes 0 for strengthening the lower extremity muscle strength.

[0066] Here, the meaning of a given distance of 0 may include not only a strictly physical 0, but also practical cases including inevitable mechanical tolerances or movement resulting from vibration or movement during use.

[0067] FIG. 7 is a front view illustrating a position of the first fixing portion 200 according to an embodiment of the present disclosure.

[0068] Referring to FIG. 7, the bed bike 1 may adjust the position of the first point 240 where the column 210 and the connecting member 230 come into contact with each other. In detail, as illustrated in (a) of FIG. 7, the first point 240 may be moved further away or closer to the user. In addition, as illustrated in (b) of FIG. 7, the first point 240 may be moved further away or closer to the body.

[0069] There is no particular limitation on the method of adjusting the position of the first point 240. As an embodiment, because the second member 212 connecting the first member 211 to the body includes a length-adjustable structure, the position of the first point 240 may be adjusted by adjusting the length of the second member 212. As another embodiment, when the second member 212 is one, unlike in FIG. 7, a rotation axis (not shown) may be further included in the portion where the second member 212 and the body 100 are connected, and the position of the first point 240 may be adjusted while the second member 212 rotates by the rotation axis.

[0070] Accordingly, by adjusting the position of the first point 240 depending on the body type of the user, users of various body types may use the bed bike 1.

[0071] Referring to FIG. 3, the first point 240 may be between a second line II perpendicular to the ground and passing through a knee Ka that is closer to the body 100 between the two knees K of the user and a third line III perpendicular to the ground and passing through a center of the rotating member 110.

[0072] Between the two knees K of the user, the knee Ka closer to the body 100 belongs to the lower extremity that applies force to the rotating member 110 while pushing the footrest 320. When the first point 240 is closer to the user than the second line II, a situation may arise where the lower extremity is to apply force to the rotating member 110 and at the same time has to pull the connecting member 230. This may be an unintended and unnecessary resistance of the bed bike 1. In addition, when the first point 240 is further from the user than the third line III, the connecting member 230 is to be unnecessarily long, which is not only a waste of material but may also reduce the effect of stably holding the thigh F of the user. The problem may be prevented by having the first point 240 located on the second line II and the third line III.

[0073] Referring to FIGS. 1 and 3, the second fixing portion 300 is connected to the rotating member 110 and may support a lower leg L of the user so that the knee K of the user does not gather inward relative to the first line I. The second fixing portion 300 may include a lower leg strap 310, the footrest 320, a crank 330, and a crank connecting member 340.

[0074] FIG. 8 illustrates a lower leg strap 310 according to an embodiment of the present disclosure. FIG. 9 illustrates a lower leg strap 310a according to another embodiment of the present disclosure.

[0075] The lower leg strap 310 may hold a part of the lower leg L of the user. The lower leg strap 310 may include a lower leg fixing plate 311 and a support column 312.

[0076] The lower leg fixing plate 311 may wrap around the part of the lower leg L of the user. The lower leg fixing plate 311 may be placed on one end of the support column 312. The lower leg fixing plate 311 may have a rectangular shape with a length longer than a width. The lower leg fixing plate 311 may be made of an elastic fabric material so as to gently wrap around the part of the lower leg L of the user.

[0077] As an embodiment, referring to (a) of FIG. 8, the lower leg fixing plate 311 may include a first fixing member 313 and a second fixing member 314. The first fixing member 313 may be provided on one side of the lower leg fixing plate 311 and may include a plurality of grooves. The second fixing member 314 may be provided on the other side of the lower leg fixing plate 311 so as to face the first fixing member 313 and may be fastened to any one of the plurality of grooves of the first fixing member 313.

[0078] The material of the first fixing member 313 may include a lightweight synthetic resin. In addition, one side of the first fixing member 313 that may directly come into contact with the skin of the user may include a material that causes less physical and chemical irritation to the skin.

[0079] Referring to (b) of FIG. 8, in a state where the foot is supported on the footrest 320 to be described later, when the first fixing member 313 gently wraps the lower leg L of the user, the lower leg L of the user may be fixed to the lower leg fixing plate 311 by fastening the second fixing member 314 to the groove on the first fixing member 313 closest to the second fixing member 314.

[0080] In another embodiment, referring to FIG. 9, a lower leg fixing plate 311a may include a Velcro 315. The Velcro 315 may be wrapped around the lower leg L of the user together with the lower leg fixing plate 311a to fix the lower leg L of the user to the lower leg fixing plate 311a. As illustrated in (a) of FIG. 9, the Velcro 315 may be at one end in the longitudinal direction of the lower leg fixing plate 311a, and a corresponding Velcro 315 may be at the other end opposite thereto. As illustrated in (b) of FIG. 9, the corresponding Velcro 315 may wrap around the lower leg L on both sides to secure the lower leg L to the lower leg fixing plate 311. Accordingly, the lower leg L may be more conveniently fixed to the lower leg fixing plate 311a.

[0081] The lower leg fixing plate 311 is on one end of the support column 312, and one side of the footrest 320 may be in contact with the other end. In detail, in order for the support column 312 to be positioned precisely on the lateral side of the lower leg L of the user, the other end of the support column 312 may be in contact with a point close to a foot end support plate 322 described later among the sides of a footrest plate 321 to be described later, the sides facing the body 100. In other words, in order for the support column 312 to be precisely on the lateral side of the lower leg L of the user, the other end of the support column 312 may be in contact with the side of the footrest plate 321 at the point where a heel of the user is positioned.

[0082] The support column 312 may be in the form of a long rectangular plate. A material of the support column 312 may include synthetic resin or steel. The support column 312 may support the lower leg L of the user so that the knee K of the user does not gather inward from the first line.

[0083] FIG. 10 illustrates a second fixing portion 300a according to another embodiment of the present disclosure.

[0084] Referring to FIG. 10, a support column 312a may be height-adjustable. Through this, a distance between the lower leg fixing plate 311 and the footrest 320 placed on one end of the support column 312a may be adjusted. Accordingly, the second fixing portion 300a may be adjusted to the length of the lower leg L of the user, and users of various body types may use the bed bike 1.

[0085] There is no particular limitation on the method for adjusting a height of the support column 312a. As an embodiment, as illustrated in FIG. 10, the support column 312a may include a first support column 312aa having a hollow and a second support column 312ab that may be inserted into the inside of the first support column 312aa. The height of the support column 312a may be adjusted depending on the degree to which the second support column 312ab is inserted into the first support column 312aa.

[0086] FIG. 11 illustrates a principle of maintaining a posture of the user by the second fixing portion 300 according to an embodiment of the present disclosure. FIG. 12 is a left side view illustrating the second fixing portion 300 holding the left lower leg L of the user according to an embodiment of the present disclosure.

[0087] A principle of maintaining the posture of the user by the second fixing portion 300 is described below.

[0088] First, the operation situation of the user illustrated in FIGS. 11 and 12 is described as follows. In FIGS. 11 and 12, the right lower extremity of the user is illustrated on the left with respect to the bed bike 1 in the drawing, and the left lower extremity of the user is illustrated on the right with respect to the bed bike 1 in the drawing. The user is pushing the left footrest 320 by applying force to the left lower extremity. At the same time, a left knee K is extended. The right lower extremity of the user is supported by the right footrest 320 and the right knee K is bent.

[0089] Anatomically, when the lower extremities are extended, that is, when the thighs F and lower legs L are close to a straight line, the knees K are in a position where the knees turn inward. In addition, when the footrest 320 is pushed to apply force to the lower extremity, force is also applied to the knee K, so the knee K may be brought inward. A case of pushing the footrest 320 to apply force to the lower extremity and a case of stretching the lower extremity occur simultaneously, and this is the case for the left lower extremity of the user in FIGS. 11 and 12.

[0090] As described above, the knee K should be above the first line I for the lower extremity muscles strength to exert their power best, and the correct posture for strengthening the lower extremity muscles is when the knee K is above the first line I. Therefore, when pushing the footrest 320, a general user may appropriately use the muscle strength of the lower extremity so that the knee K does not gather inward, that is, so that the knee K may be above the first line I.

[0091] However, in the case of users with weak lower extremity muscle strength, the strength to keep the knee K above the first line I is insufficient, so the knee K may be brought inward when pushing the footrest 320. In this case, the support column 312 of the second fixing portion 300 supports the lower leg L of the user, thereby preventing the knee K of the user from gathering inward from the first line I.

[0092] In detail, the following explanation is provided using situations illustrated in FIGS. 11 and 12. When there is no second fixing portion 300, the extended left knee K of a user with weak lower extremity muscle strength may be gathered further inward relative to the first line I as indicated by the dotted lines in FIGS. 11 and 12. However, when there is the second fixing portion 300, the second fixing portion 300 may support the left lower leg L of the user so that the left knee K of the user does not gather inward from the first line I. Therefore, the second fixing portion 300 may help the user maintain a correct posture to strengthen the lower extremity muscle strength.

[0093] The footrest 320 is connected to the lower leg strap 310 and may support the feet of the user. The user may push the footrest 320 by applying force to the lower extremity muscles. That is, the footrest 320 may serve to receive force generated from the lower extremity of the user.

[0094] FIG. 13 illustrates the footrest 320 according to an embodiment of the present disclosure. FIG. 14 illustrates the footrest 320a according to another embodiment of the present disclosure.

[0095] The Footrest 320 May Include the Footrest Plate 321 and the Foot End Support Plate 322.

[0096] The footrest plate 321 may be in contact with a sole of the foot of the user and may serve as a force applied by the user by pushing with the sole of the foot. A size of the footrest plate 321 may be the average foot size of an adult male. A material of the footrest plate 321 may include elastic rubber. Accordingly, by providing comfort to the soles of the user, it is possible to prevent the user from using the bed bike 1 for less time than necessary to strengthen the lower extremity muscles due to discomfort in the soles.

[0097] The foot end support plate 322 may protrude from one end of the footrest plate 321 and may serve to support the heel of the user. The foot end support plate 322 may be formed integrally with the footrest plate 321 using the same material.

[0098] As an embodiment, referring to (a) of FIG. 13, the footrest 320 may include a third fixing member 323 and a fourth fixing member 324. The third fixing member 323 is provided on one side of the footrest 320 and may include a plurality of grooves. The fourth fixing member 324 is provided on the other side of the footrest 320 so as to face the third fixing member 323 and may be fastened to any one of the plurality of grooves of the third fixing member 323.

[0099] A material of the third fixing member 323 may include a lightweight synthetic resin. In addition, one side of the third fixing member 323 that may directly come into contact with the skin of the user may include a material that causes less physical and chemical irritation to the skin.

[0100] Referring to (b) of FIG. 13, by fastening the groove closest to the fourth fixing member 324 and the fourth fixing member 324 while the third fixing member 323 gently wraps around a instep of the user with the heel of the foot of the user in contact with the foot end support plate 322 and a sole of the foot of the user in contact with the footrest plate 321, the foot of the user may be fixed to the footrest 320. Accordingly, the user may stably push the footrest 320 with his/her foot, thereby smoothly transmitting the power of the lower extremity muscles strength to the rotating member 110.

[0101] In another embodiment, referring to FIG. 14, the footrest 320a may include the Velcro 325. The Velcro 315 may be wrapped around the foot of the user to secure the foot of the user to the footrest 320a. A plurality of Velcros 315 may be placed. As illustrated in (a) of FIG. 14, the plurality of Velcro 325 may be at one end of the footrest 320a, and a corresponding plurality of Velcro may be at the opposite end. As illustrated in (b) of FIG. 14, corresponding Velcros 315 may wrap around the foot on both sides to secure the foot of the user to the footrest 320a. Accordingly, the user may more conveniently secure his/her feet to the footrest 320.

[0102] Referring to FIG. 1, the crank 330 may connect the footrest 320 to the rotating member 110. The crank 330 may serve to convert the force applied by the user to the footrest 320 into the rotational motion of the rotating member 110.

[0103] For a regular bike, it is desirable to place the pedal between the forefoot and ankle joint of the user to apply force to the pedal. Reflecting this, the point at which the crank 330 is connected to the footrest 320 may be on the side between the point at which the forefoot of the user is on the footrest 320 and the point at which the ankle joint vertically meets the footrest 320.

[0104] Referring to FIG. 12, the crank connecting member 340 may connect the crank 330 and the footrest 320 to each other. The crank connecting member 340 may have a cylindrical shape. One of the bottom surfaces of the cylindrical crank connecting member 340 may be vertically connected to the crank 330, and one of the side surfaces of the cylindrical crank connecting member 340 may be in contact with the bottom of the footrest 320. The footrest 320 may rotate around the central axis of the crank connecting member 340. Accordingly, even if the rotating member 110 rotates, the angle between the crank 330 and the footrest 320 may change, thereby allowing the user to comfortably rotate the rotating member 110.

[0105] FIG. 15 shows a range in which the center line CI rotates with respect to a vertical line V in the second fixing portion 300 according to an embodiment of the present disclosure.

[0106] The second fixing portion 300 may further include a joint member 350. The joint member 350 may be arranged between the lower leg strap 310 and the footrest 320. The joint member 350 may serve as the rotation axis on which the footrest 320 may rotate relative to the lower leg strap 310, or on which the lower leg strap 310 may rotate relative to the footrest 320.

[0107] Referring to (a) of FIG. 15, the center line CI refers to the line passing through the center of the lower leg strap 310. The vertical line V is a line that is perpendicular to the footrest 320 and passes through the center of the joint member 350. The center line CI may rotate about the joint member 350 as the rotation axis. The foot of the user may be flexed or extended by the ankle joint at the ankle A of the user. As the center line CI rotates around the joint member 350 as the rotation axis, the second fixing portion 300 does not restrict the movement of the ankle joint of the user, so that the user may comfortably use the bed bike 1.

[0108] In detail, (b) of FIG. 15 illustrates when the foot is bent, that is, when an angle between an instep and a shin becomes less than 90. In this case, while the center line CI rotates forward (+) with respect to the vertical line V, the longitudinal directions of the lower leg strap 310 and the lower leg L may be maintained to coincide. Accordingly, the lower leg strap 310 may still perform the role of holding the lower leg L.

[0109] (c) of FIG. 15 illustrates when the foot is extended, that is, when the angle between the instep and the shin is greater than 90. In this case, while the center line CI rotates backward () with respect to the vertical line V, the longitudinal directions of the lower leg strap 310 and the lower leg L may also be maintained to coincide. Accordingly, the lower leg strap 310 may still perform the role of holding the lower leg L.

[0110] As illustrated in FIG. 15, when the foot of the user is fully flexed forward (+), the angle between the line perpendicular to the sole of the foot and the longitudinal direction of the lower leg L is approximately 20, and when the foot of the user is fully extended backward (), the angle between the line perpendicular to the sole of the foot and the longitudinal direction of the lower leg L is approximately 50. Therefore, the angle at which the center line CI rotates may be, specifically, between 20 forward (+) with respect to the vertical line V and 50 backward () with respect to the vertical line V. Accordingly, the user may move his/her feet comfortably and without restriction within the maximum range of motion that the feet may move on the XZ plane (see FIG. 1).

[0111] FIG. 16 is a front view illustrating a bed bike 1A according to another embodiment of the present disclosure.

[0112] Referring to FIG. 16, the bed bike 1A is provided on the other side of the body 100 and may further include a support member 400 that secures the body 100 to a bed rail.

[0113] The support member 400 may include a railing fixing member 410, a body connecting member 420, and a hinge 430.

[0114] The railing fixing member 410 may be in the shape of a beam having a shaped cross section, as illustrated in FIG. 16. The material of the railing fixing member 410 may include steel for durability. The bed rail may be inserted into the inner side of shape of the railing fixing member 410. As an embodiment, the railing fixing member 410 may further include screws and screw holes. After the bed rail is inserted into the inner side of the shape, a screw is tightened into a screw groove that penetrates one side of the railing fixing member 410, so that the bed bike 1A may be stably fixed to the bed rail.

[0115] One end of the body connecting member 420 may be connected to the body 100. The hinge 430 may be between the railing fixing member 410 and the body connecting member 420.

[0116] As an embodiment, the body connecting member 420 may be adjustable in length. At the same time, the railing fixing member 410 may rotate around an axis of the hinge 430. Accordingly, the bed bike 1A may be installed depending on a height of the bed rail. Additionally, a degree to which the body 100 is tilted may be adjusted.

[0117] In another embodiment, an internal space (not shown) may be formed on the lower surface of the body 100, through which the support member 400 may be folded and stored in the internal space of the body 100. Accordingly, space may be saved when storing the bed bike 1A.

[0118] Because the bed bike 1A is supported on the bed rail through the support member 400, the space occupied by the bed bike 1A on the bed may be reduced, so that even tall users may use the bed bike 1A on the bed. In addition, by fixing the bed bike 1A directly to the bed rather than on a mat, the body 100 is fixed more stably, allowing the user to use the bed bike 1A stably.

[0119] Although the present disclosure has been described with reference to the embodiments illustrated in the drawings, these are merely examples. A person skilled in the art will readily appreciate that various modifications and equivalent other embodiments are possible from the embodiments. Therefore, the true technical protection scope of the present disclosure should be determined based on the appended claims.

[0120] The specific technical details described in the embodiments are embodiments only and do not limit the technical scope of the embodiments. In order to keep the description of the disclosure concise and clear, descriptions of conventional general techniques and configurations may be omitted. Additionally, the connecting lines or connecting members between components illustrated in the drawings are merely illustrative of functional connections and/or physical or circuit connections, and may be expressed in an actual device as various functional connections, physical connections, or circuit connections that may be replaced or added. Additionally, when there is no specific mention of an element such as essential, important, etc., it may not be a necessary component for the application of the present disclosure.

[0121] The terms the or similar designators used in the description and claims of the disclosure may refer to both the singular and the plural, unless specifically limited. Furthermore, recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. In addition, unless there is an explicit description or contradictory description of the steps that constitute a method according to an embodiment, the steps may be performed in appropriate order. The embodiments are not necessarily limited to the order in which the above steps are described. The use of any examples or exemplary terms (e.g., for example, etc.) in the embodiments is merely intended to better illuminate the present disclosure and does not pose a limitation on the scope of the present disclosure unless otherwise claimed. Additionally, a person skilled in the art will appreciate that various modifications, combinations and variations may be made depending on design conditions and factors within the scope of the appended claims or their equivalents.

INDUSTRIAL APPLICABILITY

[0122] The present disclosure may be used in the industry relating to bed bikes.