Spring having positioning ring and elastic mattress

Abstract

A spring having a positioning ring and an elastic mattress comprising same. The spring comprises a spring body (1) coiled in a spiral shape, two ends of the spring body (1) being coiled to form end surface rings (11). The spring body (1) has at least one positioning ring (12), the positioning ring (12) being a coiled ring of the spring body (1). The positioning ring (12) is approximately parallel to the end surface rings (11) or is approximately perpendicular to the elastic direction of the spring body (1), the positioning ring (12) and a stressed end of the spring body (1) being spaced apart from each other by at least 1 / 4 of the length of the spring.

Description

A spring with a positioning ring and an elastic pad

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority from and is based on a Chinese patent application filed with the State Intellectual Property Office of China on March 29, 2024, with application number: 2024103740590, and the name of the invention: "A spring and elastic pad with a positioning ring". The content of the Chinese patent application is hereby introduced into the text of this application. Technical Field

[0003] The invention belongs to the technical field of elastic pads, and in particular relates to a spring with a positioning ring and an elastic pad. Background Art

[0004] The elasticity of the existing elastic pad made of springs is a whole. When a certain part is compressed, the springs around it also bear the pressure. In this way, the elastic pad can withstand greater pressure, but its local elasticity cannot change with the posture of the human body.

[0005] The aforementioned adverse effects are primarily caused by the spring pad's mounting structure. While each spring should provide independent elasticity, in conventional spring pads, the springs are typically connected at their upper ends, allowing them to share the force and, therefore, the elasticity. Therefore, it is crucial to ensure that the springs are independently loaded while remaining connected to each other, ensuring that the pad deforms synchronously with the body's posture.

[0006] Based on the above technical problems, the inventors first designed a spring with a connecting waist ring, so that the spring can be connected at any position of the non-stressed end. However, during the test process, it was found that the connecting waist ring and the spring body may undergo relative displacement during use, affecting the connection stability of the spring. Summary of the Invention

[0007] One of the purposes of the present invention is to overcome the defects of the prior art and provide a spring and elastic pad with a positioning ring.

[0008] The technical solutions of the present invention are as follows:

[0009] A spring with a locating ring includes a spring body formed by spiral winding, and end face rings are formed by winding at both ends of the spring body. The spring body has at least one set of locating rings, which are surrounding rings of the spring body. The locating rings are roughly parallel to the end face rings or roughly perpendicular to the elastic force direction of the spring body, and the locating rings are at least 1 / 4 of the spring length away from the force-bearing end.

[0010] In some preferred embodiments, the length of each set of positioning rings is greater than or equal to 1 / 2 of a circumference.

[0011] In some preferred embodiments, the spring further includes a connecting waist ring, the inner wall of the connecting waist ring is clamped with the positioning ring, the outer wall of the connecting waist ring is provided with a connecting structure, and the two springs are connected by the connecting structure.

[0012] In some preferred embodiments, the spring includes at least two connecting waist rings, the spring body has multiple groups of positioning rings, and the at least two connecting waist rings are respectively clamped with the spring body through the positioning rings.

[0013] In some preferred embodiments, a positioning groove parallel to the positioning ring is provided on the inner wall of the connecting waist ring, the width of the positioning groove is less than or equal to the length of the positioning ring after compression, and the positioning ring is clamped in the positioning groove.

[0014] In some preferred embodiments, the length of the positioning ring is greater than or equal to one circumference.

[0015] In some preferred embodiments, the spring body has at least two sets of positioning rings, and the inner wall of the connecting waist ring is provided with two positioning protrusions along the elastic direction of the spring body, and the two positioning protrusions are engaged with the two sets of positioning rings.

[0016] In some preferred embodiments, the distance between the opposite sides of the two positioning protrusions is greater than or equal to the original length of the spring between the two sets of positioning rings, and the two positioning protrusions are clamped between the two sets of positioning rings.

[0017] In some preferred embodiments, the distance between the facing sides of the two positioning protrusions is less than or equal to the compressed length of the spring wire between the two sets of positioning rings, and the two sets of positioning rings are clamped between the two positioning protrusions.

[0018] In some preferred embodiments, the connection structure is connected by pin connection, snap connection, plug-in connection or fixation by a limit block.

[0019] An elastic pad, the elastic layer of which includes a plurality of the above-mentioned springs.

[0020] The present invention has at least the following beneficial effects:

[0021] 1. The present invention incorporates a connecting ring over the spring body. A cooperating connection structure is provided on the connecting ring to achieve connection between the springs. While ensuring that the springs do not separate from each other, the springs are connected only by the connecting ring, ensuring relative independence, independent force and movement, and minimizing interference with the elastic cushion, thereby improving comfort.

[0022] 2. The present invention incorporates at least one set of positioning rings on the spring body. These rings encircle the spring body and are greater than or equal to half the circumference. These rings are roughly parallel to the end rings or roughly perpendicular to the direction of the spring body's elastic force. During subsequent assembly, they position the connecting girdle ring, effectively preventing displacement during use and improving the convenience and stability of the spring connection.

[0023] The inclination angle of an ordinary winding ring is difficult to determine. Accordingly, it is difficult to standardize the production of the positioning groove connecting the waist ring for an ordinary winding ring. The positioning ring is designed to be roughly parallel to the end face ring or roughly perpendicular to the elastic force direction of the spring body, so that the position and shape of the positioning groove can be standardized.

[0024] In addition, when the spring performs elastic movement, the inclination angle of the positioning ring changes little, especially when the length of the positioning ring is greater than or equal to one circumference. The positioning ring can remain roughly parallel to the end face ring or roughly perpendicular to the elastic force direction of the spring body during the elastic movement. Therefore, the connecting waist ring can be stably mounted on the positioning ring and is not prone to dislocation during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic structural diagram of a spring provided in Example 1;

[0026] FIG2 is an exploded view of the spring provided in Example 1;

[0027] FIG3 is a schematic structural diagram of the spring provided in Example 1, wherein the flexible sleeve and the end cap are cross-sectional views;

[0028] FIG4 is a rear view of the structure shown in FIG3 ;

[0029] FIG5 is a left side view of the structure shown in FIG3;

[0030] FIG6 is a schematic structural diagram of a spring provided in Example 2;

[0031] FIG7 is a schematic diagram of the structure of the spring provided in Example 2 after longitudinal section, wherein the positioning ring is not cut in the cross-sectional view;

[0032] FIG8 is a front view of the structure shown in FIG7;

[0033] FIG9 is a left side view of the structure shown in FIG7;

[0034] FIG10 is a schematic structural diagram of multiple springs provided in Example 2 after connection;

[0035] FIG11 is a schematic diagram of the structure of the spring provided in Example 3 after longitudinal section, wherein the positioning ring is not cut in the cross-sectional view;

[0036] FIG12 is a left side view of the structure shown in FIG11;

[0037] FIG13 is a schematic structural diagram of a spring provided in Example 4;

[0038] FIG14 is a schematic longitudinal section view of Example 4;

[0039] FIG15 is a schematic longitudinal section view of Example 5.

[0040] Reference numerals in the figure: 1-spring body, 11-end face ring, 12-positioning ring, 13-buffering part, 2-connecting waist ring, 21-connecting structure, 22-positioning groove, 23-positioning protrusion, 3-flexible sleeve, 31-end cover. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further illustrated and described below through specific implementation methods.

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0043] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise expressly defined, directional words such as the terms "height", "upper end", "top", "bottom", "inside", "outside", "up", "down", "front", "back" and the like indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific scope of protection of the present invention.

[0044] In the present invention, substantially parallel and substantially perpendicular means that due to process limitations, the angle between the locating ring and the end face ring is less than 10°, or the elastic direction between the locating ring and the spring body is 80°-100°.

[0045] The spring body or the force-bearing end of the spring refers to the end thereof that contacts the user and receives pressure from the user. In the following embodiments, the force-bearing end refers to the spring body or the top end of the spring.

[0046] The spring body is formed by spirally winding the spring wire, and the spring wire is wound around once to form a winding ring.

[0047] Example 1

[0048] This embodiment shows a spring, as shown in Figures 1 to 5, which includes a spring body 1, a flexible sleeve 3 and an end cover 31. The two ends of the spring body 1 are surrounded to form end face rings 11, and a surrounding ring in the middle of the spring body 1 is a positioning ring 12, which is parallel to the two end face rings 11.

[0049] In this embodiment, the positioning ring 12 is formed in the middle of the spring body 1. In other possible implementations, the positioning ring 12 can be set at any position that is at least 1 / 4 of the spring length away from the spring body 1 and the force-bearing end. The main function of the positioning ring 12 is to position the connecting waist ring 2 during the subsequent installation process. Setting the positioning ring 12 at the above position can better ensure the independence of the springs after they are connected to each other.

[0050] The flexible sleeve 3 covers the spring body 1, and the end cap 31 is positioned at the spring's stressed end. Enclosing the spring body 1 with the flexible sleeve 3 prevents adjacent spring bodies 1 from becoming entangled during elastic movement, thereby reducing interference between the springs. The end cap 31 forms a spherical surface at the stressed end, increasing the contact area between the spring and the user, thereby reducing pressure. Furthermore, the end cap 31 can be made of an elastic filling material to provide better cushioning for the spring, thereby enhancing comfort.

[0051] Example 2

[0052] Referring to Figures 6-10 , the spring of this embodiment includes a spring body 1, a connecting waist ring 2, and a flexible sleeve 3. The structures of the spring body 1 and the flexible sleeve 3 are similar to those of Example 1. As can be seen from Figures 8 and 9 , the positioning ring 12 is perpendicular to the elastic direction of the spring body 1, and the flexible sleeve 3 wraps around the spring body 1.

[0053] The connecting waist ring 2 has a connecting structure 21 and a positioning groove 22. The two connecting waist rings 2 are connected to each other through the connecting structure 21, thereby connecting the two springs to each other. As shown in Figures 7 and 8, the positioning groove 22 is formed on the inner wall of the connecting waist ring 2 and is parallel to the positioning ring 12. The positioning ring 12 is snapped into the positioning groove.

[0054] In this embodiment, the length of the positioning ring is one circumference, and the width of the positioning groove 22 is the diameter of the spring wire at the positioning ring 12. In other possible implementations, the length of the positioning ring 12 is greater than one circumference, and the width of the positioning groove 22 is the total length of the positioning ring 12 after compression.

[0055] In this embodiment, the connecting waist ring 2 is sleeved outside the spring body 1 and the flexible sleeve 3. In some other possible implementations, the connecting waist ring 2 can be partially covered in the flexible sleeve 3.

[0056] The connecting structure 21 is a connecting groove respectively arranged on the front, back, left and right sides of the connecting waist ring 2, as shown in Figure 10. When the springs need to be connected, it is only necessary to bring the connecting grooves of the two springs close to each other so that the openings of the connecting grooves are parallel, and then insert the two arms of a U-shaped plug into the two adjacent connecting grooves.

[0057] Example 3

[0058] As shown in Figures 11 and 12, the difference between this embodiment and Example 2 is that the length of the positioning ring 12 is three circumferences, the width of the positioning groove 22 is three times the diameter of the spring wire at the positioning ring 12 (that is, the length of the positioning ring 12 after compression), and the positioning ring 12 is compressed and clamped in the positioning groove 22.

[0059] Example 4

[0060] As shown in FIG. 13 and FIG. 14 , the difference between Example 4 and Example 2 is that the spring body 1 has two sets of positioning rings 12 , and the two sets of positioning rings 12 are respectively engaged with a connecting waist ring 2 .

[0061] When the height of the spring is large, the connection method of the local connection structure may lead to poor stability of the elastic pad. In this embodiment, two groups of positioning rings 12 and two connecting waist rings 2 are arranged in the elastic direction of the spring, so that the stability and comfort of the elastic pad are greatly improved.

[0062] Example 5

[0063] As shown in Figure 15, in this embodiment, the spring body 1 has two groups of positioning rings 12, and the inner wall connecting the waist ring 2 is provided with two annular positioning protrusions 23. The distance between the opposite sides of the two positioning protrusions 23 is greater than the distance between the two groups of positioning rings 12. When the positioning ring 12 is engaged with the positioning protrusion 23, the two groups of positioning rings 12 and the surrounding ring therebetween (not shown in the figure) are in a stretched state.

[0064] In this embodiment, the two sets of positioning rings 12 and the surrounding ring between them are in a stretched state, generating elastic force that creates an interference fit between the positioning protrusions 23 and the positioning rings 12, resulting in a secure connection. In other possible embodiments, the distance between the opposing sides of the two positioning protrusions 23 can be equal to or less than the distance between the two sets of positioning rings 12. These embodiments can also allow the connecting waist ring 2 to be attached to the spring body 1 through the fit between the positioning protrusions 23 and the positioning rings 12, but the connection stability is slightly less than that of this embodiment.

[0065] Furthermore, in some other possible embodiments, two sets of positioning rings 12 can be clamped between two positioning protrusions 23. In this case, preferably, the distance between the facing sides of the two positioning protrusions 23 is less than the compressed length of the spring wire between the two sets of positioning rings 12. In this case, the spring wire between the two sets of positioning rings 12 is compressed between the positioning protrusions 23, creating an interference fit between the positioning protrusions 23 and the positioning rings 12. However, the technical effects of the present application can also be achieved if the distance between the facing sides of the two positioning protrusions 23 is greater than or equal to the compressed length of the spring wire between the two sets of positioning rings 12.

[0066] The above are merely preferred embodiments of the present invention, and therefore cannot be used to limit the scope of the present invention. In other words, equivalent changes and modifications made according to the scope of the present invention and the contents of the specification should still fall within the scope of the present invention. Industrial Applicability

[0067] The present invention discloses a spring with a positioning ring and an elastic pad including the spring. The spring includes a spring body formed by spiral winding, and the two ends of the spring body are wound to form end face rings. The spring body has at least one set of positioning rings, which are surrounding rings of the spring body. The positioning rings are roughly parallel to the end face rings or roughly perpendicular to the elastic force direction of the spring body; the surrounding rings are at least 1 / 4 of the spring length away from the force-bearing end. The present invention designs at least one set of positioning rings on the spring body. The positioning rings are surrounding rings on the spring body and the length of the positioning rings is greater than or equal to 1 / 2 of the circumference. The positioning rings are roughly parallel to the end face rings or roughly perpendicular to the elastic force direction of the spring body. In the subsequent assembly process, the connecting waist rings can be positioned, effectively preventing the connecting waist rings from being displaced during use, improving the convenience and stability of the connection between springs, and having industrial applicability.

Claims

1. A spring with a positioning ring, comprising a spring body formed by spiral winding, and end rings formed by winding at both ends of the spring body, characterized in that: The spring body has at least one set of positioning rings, which are surrounding rings of the spring body. The positioning rings are roughly parallel to the end face rings or roughly perpendicular to the elastic force direction of the spring body, and the positioning rings are spaced at least 1 / 4 of the spring length from the force-bearing end of the spring body.

2. The spring according to claim 1, wherein The length of each group of positioning rings is greater than or equal to 1 / 2 of the circumference.

3. The spring according to claim 1, wherein It also includes a connecting waist ring, the inner wall of which is clamped with the positioning ring, and the outer wall of which is provided with a connecting structure, through which the two springs are connected.

4. The spring according to claim 3, wherein It comprises at least two connecting waist rings, the spring body has multiple groups of positioning rings, and at least two of the connecting waist rings are respectively connected to the spring body through the positioning rings.

5. The spring according to claim 3 or 4, characterized in that The inner wall of the connecting waist ring is provided with a positioning groove parallel to the positioning ring. The width of the positioning groove is less than or equal to the length of the positioning ring after compression. The positioning ring is clamped in the positioning groove.

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

7. The spring according to claim 3 or 4, characterized in that The spring body has at least two groups of positioning rings, and the inner wall of the connecting waist ring is provided with two positioning protrusions along the elastic direction of the spring body, and the two positioning protrusions are clamped with the two groups of positioning rings.

8. The spring according to claim 7, wherein The distance between the opposite sides of the two positioning protrusions is greater than or equal to the original length of the spring between the two groups of positioning rings, and the two positioning protrusions are clamped between the two groups of positioning rings.

9. The spring according to claim 7, wherein The distance between the facing sides of the two positioning protrusions is less than or equal to the compressed length of the spring wire between the two groups of positioning rings, and the two groups of positioning rings are clamped between the two positioning protrusions.

10. The spring according to claim 3, wherein The connection method of the connection structure is pin connection, snap connection, plug connection or fixation through a limit block.

11. An elastic pad, characterized in that: The elastic layer includes a plurality of springs according to any one of claims 1-10.

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