SPRING IN WHICH INNER MIDDLE RING AND OUTER MIDDLE RING ARE MATCHED WITH AND CONNECTED TO EACH OTHER AND ELASTIC MATTRESS

Abstract

A spring in which an inner middle ring and an outer middle ring are matched with and connected to each other includes a spring body, the inner middle ring, a flexible sleeve, and an outer middle ring. The inner middle ring is sleeved on the spring body and is at least spaced apart from a force-bearing end of the spring body for of a spring length of the spring. The flexible sleeve encloses the spring body and the inner middle ring, and the outer middle ring is buckled to the inner middle ring. An outer wall of the outer middle ring includes a connecting structure, and the spring and a second spring are connected together through the connecting structure.

Claims

1. A spring in which an inner middle ring and an outer middle ring are matched with and connected to each other, comprising: a spring body, the inner middle ring, a flexible sleeve, and the outer middle ring, wherein: the inner middle ring is sleeved on the spring body and is at least spaced apart from a force-bearing end of the spring body for of a spring length of the spring, the flexible sleeve encloses the spring body and the inner middle ring, the outer middle ring is buckled to the inner middle ring, an outer wall of the outer middle ring comprises a connecting structure, and the spring and a second spring are connected together through the connecting structure.

2. The spring according to claim 1, wherein: an outer diameter of an upper end and a lower end of the inner middle ring gradually increases in a direction away from a middle part of the inner middle ring, and a height of the outer middle ring is smaller than a height of the inner middle ring.

3. The spring according to claim 1, wherein: an outer diameter of the spring body at a position at which the inner middle ring is connected to the spring body is smaller than an inner diameter of the inner middle ring.

4. The spring according to claim 1, wherein: each end of the spring body is wound into a circle to form an end surface rings, the spring body comprises at least one positioning ring, and the at least one positioning ring is a round ring of the spring body, the at least one positioning ring is substantially parallel to at least one of the end surface rings or substantially perpendicular to an elastic force direction of the spring body, and the inner middle ring is buckled to the at least one positioning ring.

5. The spring according to claim 4, wherein a length of the at least one positioning ring is greater than or equal to of a circumference of the at least one positioning ring.

6. The spring according to claim 1, wherein: the inner middle ring is integrally formed on the spring body.

7. The spring according to claim 1, wherein: at least one of the inner middle ring or the outer middle ring is formed by two to four arc-shaped members that are detachably clipped or buckled on a side of the spring body.

8. The spring according to claim 1, wherein: the connecting structure and a second connecting structure of the second spring are connected together through a pin connection, a buckle connection, an insertion connection, or a position-limiting block fixing connection.

9. The spring according to claim 1, comprising: a plurality of inner middle rings, including the inner middle ring; and a plurality of outer middle rings, including the outer middle ring, wherein: a number of the plurality of outer middle rings is equal to a number of the plurality of inner middle rings.

10. The spring according to claim 2, wherein: an outer diameter of the spring body at a position at which the inner middle ring is connected to the spring body is smaller than an inner diameter of the inner middle ring.

11. The spring according to claim 2, wherein: each end of the spring body is wound into a circle to form an end surface rings, the spring body comprises at least one positioning ring, and the at least one positioning ring is a round ring of the spring body, the at least one positioning ring is substantially parallel to at least one of the end surface rings or substantially perpendicular to an elastic force direction of the spring body, and the inner middle ring is buckled to the at least one positioning ring.

12. The spring according to claim 11, wherein a length of the at least one positioning ring is greater than or equal to of a circumference of the at least one positioning ring.

13. An elastic mattress, comprising: an elastic layer, wherein: the elastic layer comprises a plurality of the springs according to claim 1.

14. The elastic mattress according to claim 13, wherein: an outer diameter of an upper end and a lower end of the inner middle ring gradually increases in a direction away from a middle part of the inner middle ring, and a height of the outer middle ring is smaller than a height of the inner middle ring.

15. The elastic mattress according to claim 13, wherein: an outer diameter of the spring body at a position at which the inner middle ring is connected to the spring body is smaller than an inner diameter of the inner middle ring.

16. The elastic mattress according to claim 13, wherein: each end of the spring body is wound into a circle to form an end surface rings, the spring body comprises at least one positioning ring, and the at least one positioning ring is a round ring of the spring body, the at least one positioning ring is substantially parallel to at least one of the end surface rings or substantially perpendicular to an elastic force direction of the spring body, and the inner middle ring is buckled to the at least one positioning ring.

17. The elastic mattress according to claim 16, wherein a length of the at least one positioning ring is greater than or equal to of a circumference of the at least one positioning ring.

18. The elastic mattress according to claim 13, wherein: the inner middle ring is integrally formed on the spring body.

19. The elastic mattress according to claim 13, wherein: at least one of the inner middle ring or the outer middle ring is formed by two to four arc-shaped members that are detachably clipped or buckled on a side of the spring body.

20. The elastic mattress according to claim 13, wherein: the connecting structure and a second connecting structure of the second spring are connected together through a pin connection, a buckle connection, an insertion connection, or a position-limiting block fixing connection.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG. 1 illustrates a perspective view of a spring provided in Embodiment 1.

[0026] FIG. 2 illustrates a longitudinal cross-sectional view of the spring provided in Embodiment 1.

[0027] FIG. 3 illustrates a longitudinal cross-sectional view of an inner middle ring in Embodiment 1.

[0028] FIG. 4 illustrates a perspective view of springs provided in Embodiment 2 and used in an elastic mattress.

[0029] FIG. 5 illustrates a perspective view of the spring provided in Embodiment 2.

[0030] FIG. 6 illustrates a longitudinal cross-sectional view of the spring provided in Embodiment 2.

[0031] FIG. 7 illustrates a perspective view of a spring body of Embodiment 2.

[0032] FIG. 8 illustrates a longitudinal cross-sectional view of an inner middle ring in Embodiment 2.

[0033] FIG. 9 illustrates a perspective view of springs provided in Embodiment 2 and used in the elastic mattress.

[0034] FIG. 10 illustrates a perspective view of a spring provided in Embodiment 3.

[0035] FIG. 11 illustrates a cross-sectional view of the spring provided in Embodiment 3.

[0036] FIG. 12 illustrates a perspective view of a spring provided in Embodiment 4.

[0037] FIG. 13 illustrates a cross-sectional view of the spring provided in Embodiment 4.

REFERENCE NUMBERS IN THE FIGURES

[0038] 1spring body, 11end ring, 12positioning ring, 2inner middle ring, 21receiving groove, 22positioning groove, 3flexible sleeve, 4outer middle ring, 41connecting structure.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The technical solutions of the present disclosure will be further illustrated and described below through specific embodiments.

[0040] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. It is evident that the described embodiments are preferred embodiments of the present disclosure and should not be regarded as exclusive of other embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present in disclosure.

[0041] In the description of the present disclosure, it should be noted that the terms height, upper end, top/bottom, inner, outer, upper, lower, front, rear, etc. indicate the orientation or positional relationship based on the orientation shown in the drawings. The positional relationship is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the referenced device or element must have a specific orientation, be constructed, and be operated in a specific orientation. Therefore, the positional relationship should not be understood as a limitation of the present disclosure.

[0042] In the present disclosure, due to process limitations, the phrase substantially parallel to means that an included angle between a positioning ring and an end surface ring is less than 10 degrees, and the phrase substantially perpendicular to means that an included angle between the positioning ring and an elastic force direction of a spring body is 80 degrees to 100 degrees.

[0043] A force-bearing end of a spring or the spring body refers to an end that is in contact with a user and bears weight from the user. In the following embodiments, the force-bearing end refers to a top of the spring body or a top of the spring.

[0044] The spring body is formed by a spiral of a spring wire. The spring wire is wound into a circle to form a round ring. The round rings at two ends of the spring body are end surface rings.

Embodiment 1

[0045] This embodiment provides a spring. As shown in FIGS. 1 and 2, the spring comprises a spring body 1, an inner middle ring 2, a flexible sleeve 3, and an outer middle ring 4. The inner middle ring 2 is sleeved on a middle part of the spring body 1. In other possible embodiments, the inner middle ring 2 can be disposed at any position which is at least spaced apart from a force-bearing end of the spring body 1 for of a spring length of the spring. The main function of the inner middle ring 2 is to position the outer middle ring 4 during a subsequent installation process. Setting the inner middle ring 2 at the above position can better ensure independence of the spring after the spring is connected to other springs.

[0046] Specifically, an inner diameter of the inner middle ring 2 is smaller than an outer diameter of a position of the spring body 1 at which the spring body 1 is connected to the inner middle ring 2, so that the inner middle ring 2 has an interference fit with the spring body 1. As shown in FIG. 3, an outer diameter of an upper end and a lower end of the inner middle ring 2 gradually increases in a direction away from a middle part of the inner middle ring 2 to form a receiving groove 21. A height of the outer middle ring 4 is smaller than a height of the inner middle ring 2, and the outer middle ring 4 is sleeved on and disposed in the receiving groove 21, which is annular.

[0047] Each of a front side, a rear side, a left side, and a right side of the outer middle ring 4 comprises a connecting structure 41. The connecting structure 41 comprises an opening of which an axis extends along a vertical direction. After the openings of two of the connecting structures 41 overlap, a pin connection can be carried out through a third piece to obtain an elastic mattress shown in FIG. 4. At least one of the inner middle ring 2 or the outer middle ring 4 is formed by two to four arc-shaped members 42 that are detachably clipped or buckled on a side of the spring body 1.

[0048] In this embodiment and the following embodiments, only the technical solution having a group of the inner middle ring 2 and the outer middle ring 4 is described. In other possible embodiments, when a height of the spring is large, in order to avoid a problem of poor stability of the elastic mattress caused by local connections, two or more groups of the inner middle ring 2 and the outer middle ring 4 can be provided in an elastic force direction of the spring, which can improve stability and comfort of the elastic mattress.

[0049] In this embodiment, the flexible sleeve 3 covers the spring body 1 and the inner middle ring 2, which can prevent adjacent spring bodies 1 of other springs from being entangled with each other during elastic movement of the spring body 1, thereby reducing mutual interference between the springs.

Embodiment 2

[0050] Considering that a technical solution of direct interference fit between the inner middle ring 2 and the spring body 1 may have a problem of relatively weak connection stability, the inventor further designed a technical solution for the inner middle ring 2 being buckled to the spring body 1 as shown in FIGS. 5 and 6 to achieve precise coordination between the inner middle ring 2, the outer middle ring 4, and the spring body 1.

[0051] The main difference between Embodiment 2 and Embodiment 1 is that, as shown in FIG. 7, a round ring in the middle part of the spring body 1 is a positioning ring 12, and the positioning ring 12 is parallel to an end surface ring 11. As shown in FIG. 8, an inner wall of the inner middle ring 2 comprises a positioning groove 22, which is annular, parallel to the positioning ring 12, and the positioning ring 12 is buckled to the positioning groove 22.

[0052] In this embodiment, each of a front side, a rear side, a left side, and a right side of the outer middle ring 4 comprises a connecting structure 41. The connecting structure 41 is a protruding column extending outward along a radial direction of the outer middle ring 4, and a distal end of the protruding column is expanded to form a buckling connecting member. FIG. 9 shows an elastic mattress comprising the spring provided in this embodiment. As shown in the figure, two of the connecting structures 41 of two springs are connected to a third piece at the same time to realize a connection between the two springs.

Embodiment 3

[0053] A structure of the spring provided in Embodiment 3 is shown in FIGS. 10 and 11. The structure is similar to that of Embodiment 2, with the main difference being that a connecting structure 41 is different.

[0054] This embodiment has an inner middle ring 2 and an outer middle ring 4. The inner middle ring 2 is buckled to the positioning ring 12 through a positioning groove 22 on an inner wall of the inner middle ring 2. The inner middle ring 2 is enclosed in a flexible sleeve 3, and the outer middle ring 4 is sleeved outside the flexible sleeve 3. Four of the connecting structures 41 are disposed along a circumferential side on an outer wall of the outer middle ring 4. The four of the connecting structures 41 are divided into male parts 41a and female parts 41b that cooperate with each other, and the springs are connected together through buckling of the male parts and the female parts.

Embodiment 4

[0055] A structure of the spring provided in Embodiment 4 is shown in FIGS. 12 and 13. The structure is similar to that of Embodiment 2, with the main difference being that a connecting structure 41 is different.

[0056] This embodiment has an inner middle ring 2 and an outer middle ring 4. The inner middle ring 2 is buckled to the positioning ring 12 through a positioning groove 22 on an inner wall of the inner middle ring 2. The inner middle ring 2 is enclosed in a flexible sleeve 3, and the outer middle ring 4 is sleeved outside the flexible sleeve 3. Four of the connecting structures 41 are disposed along a circumferential side on an outer wall of the outer middle ring 4. The four of the connecting structures 41 are divided into male parts 41a and female parts 41b that cooperate with each other. Each of the female parts of this embodiment is a sliding buckle groove 41c, and two sides of the sliding buckle groove perpendicular to a sliding direction respectively comprise two buckling holes 41d. Correspondingly, each of the male parts is a sliding block 41e, and the sliding block comprises two protrusions 41f configured to correspond to a position of the two buckling holes 41d. When the sliding block 41e enters the sliding buckle groove 41c, the two protrusions 41f pass through the two buckling holes 41d to enable the sliding block 41e to be fixedly connected to the sliding buckle groove 41c.

[0057] In this embodiment, the female parts and male parts are alternately arranged on the outer middle ring 4. In other possible implementations, the female parts and male parts can be selected as needed.

[0058] The above are only preferred embodiments of the present disclosure, and therefore cannot be used to limit the scope of the present disclosure. That is, equivalent changes and modifications made based on the patent scope of the present disclosure and the content of the specification should still fall within the scope of the present disclosure.