Spring having inner waist ring and outer waist ring in fit connection, and resilient mattress

Abstract

NOT VISIBLE DUE TO STATUS OF PATENT

Description

A spring and elastic pad connected with an inner waist ring and an outer waist ring

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority based on the Chinese patent application filed with the State Intellectual Property Office of China on February 7, 2024, with application number: 2024101744756, and the name of the invention: "A spring and elastic pad connected to an inner waist ring and an outer waist 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 particularly relates to a spring and an elastic pad that are cooperatively connected to an inner waist ring and an outer waist ring. 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. Summary of the Invention

[0006] One of the purposes of the present invention is to overcome the defects of the prior art and provide a spring and an elastic pad that are cooperatively connected to an inner waist ring and an outer waist ring.

[0007] The technical solutions of the present invention are as follows:

[0008] A spring with an inner waist ring and an outer waist ring in cooperative connection, comprising a spring body, an inner waist ring, a flexible sleeve and an outer waist ring;

[0009] The inner waist ring is sleeved on the spring body and the distance between the inner waist ring and the force-bearing end of the spring body is at least 1 / 4 of the spring length;

[0010] The flexible sleeve wraps the spring body and the inner waist ring;

[0011] The outer waist ring is clamped with the inner waist ring, and the outer wall of the outer waist ring is provided with a connecting structure, and the two springs are connected through the connecting structure.

[0012] In some possible implementations, the outer diameters of the upper and lower ends of the inner waist ring gradually increase in a direction away from the middle of the inner waist ring, and the height of the outer waist ring is smaller than that of the inner waist ring.

[0013] In some possible implementations, the outer diameter of the connection between the spring body and the inner waist ring is smaller than the inner diameter of the inner waist ring.

[0014] In some possible embodiments, the two ends of the spring body are surrounded to form end face rings, and 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 inner waist ring is clamped with the positioning rings.

[0015] In some possible implementations, the length of the positioning ring is greater than or equal to 1 / 2 of the circumference.

[0016] In some possible implementations, the inner waist ring is integrally formed on the spring body.

[0017] In some possible implementations, the inner waist ring and / or the outer waist ring are formed by two to four arc parts that are detachably snapped or buckled at the sides.

[0018] In some possible implementations, the connection structure is connected in a pin connection, a snap connection, a plug connection, or fixed by a limit block.

[0019] In some possible implementations, the spring includes at least two inner waist rings and a number of outer waist rings corresponding to the number of the inner waist rings.

[0020] An elastic pad, the elastic layer of which includes the above-mentioned spring.

[0021] The present invention has at least the following beneficial effects:

[0022] 1. The inner waist ring and the outer waist ring are connected to the spring body. The two springs are connected by the connecting structure on the outer waist ring. While ensuring that the springs are not separated from each other, the springs are only connected through the outer waist ring, ensuring that the springs are relatively independent, can bear force and move independently, reduce interference with the elastic pad, and improve the comfort of the elastic pad.

[0023] 2. The inner waist ring and the spring body are wrapped in a flexible sleeve. Compared with the installation method of directly setting the outer waist ring on the spring body, the cooperation between the inner waist ring and the outer waist ring improves the convenience of installing the outer waist ring and makes the connection between the outer waist ring and the spring body more stable.

[0024] 3. In some embodiments, the present invention designs at least one surrounding ring in the spring body as a positioning ring, which is roughly parallel to the end face ring or roughly perpendicular to the elastic force direction of the spring body. In the subsequent assembly process, the inner waist ring and the outer waist ring can be positioned, effectively preventing the outer waist ring from being displaced during use, thereby improving the convenience and stability of the connection between the springs.

[0025] The inclination angle of an ordinary winding ring is difficult to determine. Accordingly, it is difficult to standardize the production of the positioning groove of the connector for an ordinary winding ring. By designing the positioning ring to be roughly parallel to the end face ring or roughly perpendicular to the elastic force direction of the spring body, the position and shape of the positioning groove can be standardized.

[0026] 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 maintain a direction roughly parallel to the end face ring or roughly perpendicular to the elastic force direction of the spring body during elastic movement. Therefore, the inner waist ring and the outer waist ring can be stably mounted on the positioning ring and are not prone to dislocation during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic structural diagram of a spring provided in Example 1;

[0028] FIG2 is a longitudinal cross-sectional view of the spring provided in Example 1;

[0029] FIG3 is a longitudinal cross-sectional view of the inner waist ring in Example 1;

[0030] FIG4 is a schematic diagram of a spring provided in Example 2 used in an elastic pad;

[0031] FIG5 is a schematic structural diagram of a spring provided in Example 2;

[0032] FIG6 is a longitudinal cross-sectional view of the spring provided in Example 2;

[0033] FIG7 is a schematic structural diagram of the spring body of Example 2;

[0034] FIG8 is a longitudinal cross-sectional view of the inner waist ring in Example 2;

[0035] FIG9 is a schematic diagram of a spring provided in Example 2 used for an elastic pad;

[0036] FIG10 is a schematic structural diagram of a spring provided in Example 3;

[0037] FIG11 is a cross-sectional view of a spring provided in Example 3;

[0038] FIG12 is a schematic structural diagram of a spring provided in Example 4;

[0039] FIG13 is a cross-sectional view of the spring provided in Example 4.

[0040] Reference numerals in the figure: 1-spring body, 11-end face ring, 12-positioning ring, 2-inner waist ring, 21-accommodating groove, 22-positioning groove, 3-flexible sleeve, 4-outer waist ring, 41-connecting structure. 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° to 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 top end of the spring body or 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. The winding rings at both ends of the spring body are end face rings.

[0047] Example 1

[0048] This embodiment illustrates a spring, as shown in Figures 1 and 2 . The spring comprises a spring body 1, an inner waist ring 2, a flexible sleeve 3, and an outer waist ring 4. The inner waist ring 2 is sleeved onto the middle portion of the spring body 1. In other possible implementations, the inner waist ring 2 can be positioned anywhere between the spring body 1 and the stressed end, at least 1 / 4 of the spring's length. The primary function of the inner waist ring 2 is to position the outer waist ring 4 during subsequent installation. Placing the inner waist ring 2 in this position effectively ensures the independence of the springs after they are connected.

[0049] Specifically, the outer diameter of the inner waist ring 2 is larger than the inner diameter of the connection between the spring body 1 and the inner waist ring 2, and the inner waist ring 2 and the spring body 1 have an interference fit. As shown in Figure 3, the outer diameters of the upper and lower ends of the inner waist ring 2 gradually increase away from the center to form an accommodating groove 21. The height of the outer waist ring 4 is smaller than that of the inner waist ring 2, and the outer waist ring 4 is sleeved in the annular accommodating groove 21.

[0050] A connecting structure 41 is provided on the front, back, left and right sides of the outer waist ring 4 respectively. The connecting structure 41 has a vertical opening. When the openings of the two connecting structures 41 overlap, they can be pin-connected through a third piece to obtain the elastic pad shown in Figure 4.

[0051] In this embodiment and the following embodiments, only a single set of inner and outer waist rings 2 and 4 is described. In other possible implementations, when the spring height is relatively high, to avoid the problem of poor elastic cushion stability caused by partial connection, two or more sets of inner and outer waist rings 2 and 4 can be provided in the direction of the spring's elastic force, significantly improving the elastic cushion's stability and comfort.

[0052] In this embodiment, the flexible sleeve 3 covers the spring body 1 and the inner waist ring 2, which can prevent adjacent spring bodies 1 from being entangled during elastic movement, thereby reducing mutual interference between springs.

[0053] Example 2

[0054] Considering that the direct interference fit between the inner waist ring 2 and the spring body 1 may have the problem of relatively weak connection stability, the inventors further designed a technical solution for the inner waist ring 2 and the spring body 1 to be connected by a clip, as shown in Figures 5 and 6, so that the inner waist ring 2, the outer waist ring 4 and the spring body 1 can be more precisely matched.

[0055] The main difference between Example 2 and Example 1 is that, as shown in Figure 7, a surrounding ring in the middle of the spring body 1 is a positioning ring 12, and the positioning ring 12 is parallel to the end face ring 11. As shown in Figure 8, the inner wall of the inner waist ring 2 is provided with an annular positioning groove 22 parallel to the positioning ring 12, and the positioning ring 12 is clamped in the positioning groove 22.

[0056] In this embodiment, a connecting structure 41 is provided on each of the front, back, left, and right sides of the outer waist ring 4. This connecting structure 41 is a protruding column extending radially outward from the outer waist ring 4, with the distal end of the protruding column enlarged to form a snap-fit ​​portion. Figure 9 shows an elastic pad including the springs provided in this embodiment. As shown, a connecting structure 41 on each of the two springs simultaneously snaps into a third member to connect the two springs.

[0057] Example 3

[0058] The structure of the spring provided in Example 3 is shown in FIG. 10 and FIG. 11 . The structure is similar to that of Example 2, with the main difference being that the connection structure 41 is different.

[0059] This embodiment has an inner waist ring 2 and an outer waist ring 4. The inner waist ring 2 is clamped with the positioning ring 12 through the positioning groove 22 on its inner wall. The inner waist ring 2 is wrapped in the flexible sleeve 3, and the outer waist ring 4 is sleeved on the outside of the flexible sleeve 3. Four connecting structures 41 are arranged on the circumferential side of the outer wall of the outer waist ring 4. The connecting structure 41 is a male and female part that cooperate with each other, and the spring is connected by buckling the male and female parts.

[0060] Example 4

[0061] The structure of the spring provided in Example 4 is shown in FIG. 12 and FIG. 13 . The structure is similar to that of Example 2, with the main difference being that the connection structure 41 is different.

[0062] This embodiment comprises an inner waist ring 2 and an outer waist ring 4. The inner waist ring 2 is engaged with the positioning ring 12 via a positioning groove 22 on its inner wall. The inner waist ring 2 and the spring body 1 are encased in a flexible sleeve 3. The outer waist ring 4 is engaged with the inner waist ring encased in the flexible sleeve 3. Four connecting structures 41 are provided along the circumference of the outer wall of the outer waist ring 4. The connecting structures 41 are male and female components that cooperate with each other. The female component in this embodiment is a sliding slot, which has locking holes on two sides perpendicular to the sliding direction. Correspondingly, the male component is a slider, which has two protrusions corresponding to the positions of the locking holes. When the slider enters the sliding slot, the protrusions pass through the locking holes to secure the slider in the sliding slot.

[0063] In this embodiment, the clips and fasteners are alternately arranged. In other possible implementations, they can be arbitrarily selected as needed.

[0064] 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

[0065] The present invention discloses a spring with an inner waist ring and an outer waist ring in cooperation and connection, and an elastic pad including the spring. The spring includes a spring body, an inner waist ring, a flexible sleeve, and an outer waist ring. The inner waist ring is sleeved on the spring body, and the inner waist ring and the force-bearing end of the spring body are separated by at least 1 / 4 of the spring length. The flexible sleeve wraps the spring body and the inner waist ring. The outer waist ring is clamped with the inner waist ring, and the outer wall of the outer waist ring is provided with a connecting structure. The two springs are connected by the connecting structure. The inner waist ring and the outer waist ring are cooperatively connected to the spring body. The two springs are connected by the connecting structure on the outer waist ring. While ensuring that the springs do not separate from each other, the springs are connected only by the outer waist ring, ensuring that the springs are relatively independent, can bear force and move independently, reduce interference with the elastic pad, and improve the comfort of the elastic pad. The invention has industrial applicability.

Claims

1. A spring with an inner waist ring and an outer waist ring connected in a cooperative manner, characterized in that: It includes a spring body, an inner waist ring, a flexible sleeve and an outer waist ring; Wherein, the inner waist ring is sleeved on the spring body and the inner waist ring and the force-bearing end of the spring body are spaced at least 1 / 4 of the spring length; The flexible sleeve wraps the spring body and the inner waist ring; The outer waist ring is clamped with the inner waist ring, and the outer wall of the outer waist ring is provided with a connecting structure, and the two springs are connected through the connecting structure.

2. The spring according to claim 1, wherein The outer diameters of the upper and lower ends of the inner waist ring gradually increase in a direction away from the middle of the inner waist ring, and the height of the outer waist ring is smaller than that of the inner waist ring.

3. The spring according to claim 1 or 2, characterized in that The outer diameter of the spring body at the connection with the inner waist ring is smaller than the inner diameter or diameter of the inner waist ring.

4. The spring according to claim 1 or 2, wherein: The two ends of the spring body are surrounded to form end face rings, and 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 inner waist ring is clamped with the positioning rings.

5. The spring according to claim 4, wherein The length of the positioning ring is greater than or equal to 1 / 2 of the circumference.

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

7. The spring according to claim 1, wherein The inner waist ring and / or the outer waist ring are formed by two to four arc parts that are detachably clamped or buckled at the side.

8. The spring according to claim 1, wherein The connection method of the connection structure is pin connection, snap connection, plug connection or fixation through a limit block.

9. The spring according to claim 1, wherein It includes at least two inner waist rings and outer waist rings corresponding to the number of the inner waist rings.

10. An elastic pad, characterized in that: The elastic layer includes a plurality of springs according to any one of claims 1 to 9.