Spring unit having expandable top supporting surface, spring module, and elastic pad

Abstract

A spring unit (1) having an expandable top supporting surface, a spring module (4) composed of the spring unit (1), and an elastic pad (5) assembled from the spring module (4). The spring unit (1) comprises a spring (11) and a fixing sleeve (12), the spring (11) being mounted in the fixing sleeve (12); an expansion adjustment device (2) is provided at the top of the fixing sleeve (12); the expansion adjustment device (2) comprises an opening and closing portion (21), and the opening and closing portion (21) can horizontally open and close on a top end surface; and after the opening and closing portion (21) is unfolded outwards, the projection of the opening and closing portion (21) in a vertical direction is less than or equal to the projection of the bottom of the fixing sleeve (12).

Description

A spring unit with an expandable top supporting surface, a spring module, and a spring cushion

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese patent application with the application number 2024107408053, the invention name is "a conical spring with variable top size, spring module, and spring cushion", which was filed on June 7, 2024, to the State Intellectual Property Office of China, and claims the priority thereof, the content of which is incorporated herein. TECHNICAL FIELD

[0003] The present invention relates to the technical field of household springs, and in particular to a spring supporting surface and a spring module and a spring cushion composed of the spring. BACKGROUND

[0004] Household springs are commonly used in furniture or various seating chairs, including mattresses, sofas, and other equipment, to provide elastic support and shock absorption and improve comfort and durability. Different household equipment requires different types and shapes of springs.

[0005] Household springs have high elasticity and can support different household equipment, providing good cushioning and elastic support. Household springs provide support through elastic deformation and rebound, which is one of the important functions of springs.

[0006] As a support, the top of the spring needs to have sufficient carrying capacity and strength to withstand the required pressure and load. The top of the known spring module is usually bound as a whole, so the spring cushion cannot be disassembled, is difficult to transport, and the spring force of each part of the spring cushion is consistent and cannot be adjusted.

[0007] Currently, the size of the spring top in the disassembled spring cushion is generally fixed during design and manufacturing, and it is usually not possible to change it at will, because the size, wire diameter, and material of the spring are determined according to the design requirements and application requirements, and the corresponding spring top size is also fixed. The independent support effect of the spring is good, but the gap between the springs is large, and the support area is small, therefore, a spring with a larger spring top supporting surface is needed, especially a conical spring. SUMMARY

[0008] To solve the technical problem of insufficient independent spring top support area mentioned in the background art, the present invention provides a spring unit with a variable top size, a spring module, and a spring cushion.

[0009] In order to solve the above technical problems, the application provides a spring unit with variable top size, which comprises a spring and a fixing sleeve, the fixing sleeve comprises an upper cover and a lower base, a flexible band is connected between the upper cover and the lower base, and the spring is arranged in the fixing sleeve.

[0010] An expansion adjusting device is arranged on the upper cover of the fixing sleeve.

[0011] The expansion adjusting device comprises an opening and closing part, which expands horizontally at the top end surface; after the opening and closing part is unfolded outward, the opening and closing part forms an outer extension surface of the top end surface.

[0012] After the opening and closing part is unfolded, the projection of the opening and closing part in the vertical direction is greater than or equal to the projection of the base of the spring fixing sleeve.

[0013] In a preferred embodiment, the spring is a conical structure.

[0014] In a preferred embodiment, the adjusting part comprises an opening and closing part and a rotating part, the rotating part is rotatably connected to the top of the conical fixing sleeve.

[0015] The rotating part is used for driving the opening and closing part to expand or close horizontally through rotation.

[0016] In a preferred embodiment, the opening and closing part is composed of a plurality of blades, and the plurality of blades are circularly spliced.

[0017] The blades are petal-shaped movable pieces.

[0018] In a preferred embodiment, the rotating part comprises a base plate and a rotating disc, the base plate is a fixed disc and is fixed to the end cover of the conical fixing sleeve.

[0019] The rotating disc is rotatably arranged on the base plate, and the blades are movably arranged on the rotating disc.

[0020] In a preferred embodiment, the base plate is provided with a sliding track, the rotating disc is provided with a guide rail, and the bottom of the blade is provided with a first sliding block and a second sliding block.

[0021] The first sliding block is slidably connected in the guide rail, and the second sliding block is slidably connected in the sliding track through the guide rail; the blade can be opened and closed horizontally under the guidance of the first sliding block and the guide rail and the second sliding block and the sliding track.

[0022] In a preferred embodiment, the first sliding block and the second sliding block are a first section and a second section of the same sliding block, the shape of the second section sliding block is matched with the sliding track on the base plate, and the shape of the first section sliding block is matched with the guide rail on the rotating disc.

[0023] In a preferred embodiment, the sliding track is arranged as an arc-shaped track; and the guide rail is arranged as a straight guide rail.

[0024] The bottom of the straight guide rail is arranged as an open channel, and the second sliding block passes through the open channel to slide with the arc-shaped track.

[0025] In a preferred embodiment, the conical spring is hollow, and a plurality of the conical springs can be stacked.

[0026] After the opening and closing part is closed, the projection of the opening and closing part in the vertical direction is less than or equal to the projection area of the top of the conical fixing sleeve.

[0027] The application also provides a spring module, which comprises a plurality of splicable conical springs and a base; the base can be spliced between the base and the base, and between the base and the conical spring.

[0028] The spring unit is arranged to have a variable top support area; the spring module or elastic pad formed by a plurality of spring units has independent top parts.

[0029] The application also provides an elastic pad spliced by the spring module; the spring module comprises a plurality of spring units with variable top sizes.

[0030] Compared with the prior art, the technical scheme of the application has the following beneficial effects:

[0031] 1. By providing a spring unit with a variable top size, the structure of the conical spring is used in combination with a top adjusting part to realize the size adjustment of the top support area of the spring. The adjusting part is arranged at the small end of the conical spring, and when the adjusting part is opened to increase the top area, the size of the opened top is similar to that of the large end of the conical spring, so that the support area of the spring unit in the state of supporting the small end surface of the conical spring can be expanded. Therefore, it is not necessary to fill or thicken the sponge to compensate for the gap between the spring units, and it is also not necessary to connect the upper ends of the springs to lose the independent support of the spring units. When the spring unit is pressed, it will not lose balance.

[0032] 2. By providing a spring unit with a variable top size, the stability of the spring module is not affected, the size of the top of the spring can be adjusted at will, and the performance and structure of the spring will not be unbalanced.

[0033] 3. After the elastic pad is disassembled, the top adjusting part can be selected to be rotated to restore the conical spring, which can be stacked to reduce the storage volume. BRIEF DESCRIPTION OF DRAWINGS

[0034] FIG. 1 is a perspective view of the spring unit with an expandable support surface according to the application;

[0035] Figure 2 is an exploded view of the spring unit of the expandable support surface of the present application;

[0036] Figure 3 is a front view of the spring unit of the expandable support surface of the present application;

[0037] Figure 4 is a top view of the spring unit of the expandable support surface of the present application in an expanded state;

[0038] Figure 5 is a stacked view of multiple spring units of the expandable support surface of the present application;

[0039] Figure 6 is an overall view of the spring units of the expandable support surface of the present application assembled to form a spring module;

[0040] Figure 7 is a view of the spring module of the preferred embodiment of the present application with the top portion rotated open;

[0041] Figure 8 is an overall view of multiple spring modules of the preferred embodiment of the present application assembled to form a spring net;

[0042] Figure 9 is a view of the spring net of the preferred embodiment of the present application with the top portion rotated open;

[0043] Figure 10 is a view of the spring net of the preferred embodiment of the present application with a soft cushion layer laid on top;

[0044] Figure 11 is a view of the spring net and soft cushion layer of the preferred embodiment of the present application with a cloth cover assembled thereon;

[0045] Figure 12 is a view of the elastic pad of the preferred embodiment of the present application.

[0046] BRIEF DESCRIPTION OF THE DRAWINGS 1. Spring unit; 11. Spring; 12. Fixed sleeve; 2. Expansion adjustment device; 21. Opening and closing part; 211. Blade; 212. First sliding block; 213. Second sliding block; 22. Rotating part; 221. Base plate; 222. Turntable; 223. Sliding track; 224. Guide rail; 3. Base; 4. Spring module; 5. Elastic pad; 6. Soft cushion layer; 7. Cloth cover. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0048] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be wall-mounted connection, can be detachable connection, or integral connection, can be mechanical connection, can be electrical connection, can be direct connection, can be indirect connection through an intermediate medium, can be internal communication between two elements, and the specific meaning of the above terms in the present application can be understood according to the specific circumstances by those skilled in the art.

[0050] Referring to FIGS. 1-12, the present embodiment provides a spring unit 1 with a variable top support surface size, which includes a spring 11 and a fixing sleeve 12, the spring 11 is provided in a conical structure, and the spring 11 is installed in the fixing sleeve 12. The fixing sleeve 12 includes an upper cover, a base, and a cloth sleeve or a belt continuously between the upper cover and the base.

[0051] An expansion adjustment device 2 is provided at the top of the fixing sleeve 12 of the spring unit 1, which is the small end of the conical shape of the fixing sleeve 12. The expansion adjustment device 2 includes an opening and closing part 21, which has opening and closing action along the horizontal top end face, and the opening and closing part 21 can be expanded outward, and the expanded opening and closing part 21 forms an expansion surface outward from the top end face.

[0052] The structure that the opening and closing part 21 can be expanded outward realizes the change of the size of the top of the spring unit 1, which can increase the bearing area of the top of the conical spring 1, and the opening and closing part 21 is provided at the small end of the cone, which realizes the stability of the spring 11 module without affecting the spring 11 module, so that the size of the top of the spring 11 can be adjusted at will, and the performance and structure of the spring 11 will not be imbalanced.

[0053] When the opening and closing part 21 is unfolded, the projection of the opening and closing part 21 in the vertical direction is less than or equal to the projection of the base of the conical fixing sleeve 12, which is the large end of the conical fixing sleeve 12. When the opening and closing part 21 is folded, the projection of the opening and closing part 21 in the vertical direction is less than or equal to the projection of the top of the conical fixing sleeve 12. The spring unit 1 is hollow, and when the opening and closing part 21 is folded, a plurality of spring units 1 can be stacked for storage; and when a plurality of conical springs 1 are assembled, the unfolding of the opening and closing part 21 will not interfere with adjacent conical springs 1.

[0054] The expansion adjusting device 2 is specifically configured as follows: the expansion adjusting device comprises an opening and closing part 21 and a rotating part 22, the rotating part 22 is rotatably connected to the top of the fixing sleeve 12, the opening and closing part 21 is connected to the rotating part 22 in linkage, and under the rotation driving of the rotating part 22, the opening and closing part 21 can be unfolded outwardly or folded inwardly.

[0055] The rotating part 22 comprises a base plate 221 and a rotating disc 222, the base plate 221 is a fixed disc fixed to the top of the conical fixing sleeve 12, and the rotating disc 222 is rotatably installed on the base plate 221. The opening and closing part 21 is composed of a plurality of leaf blades 211, the leaf blades 211 are circularly movably installed on the rotating disc, and the leaf blades 211 are configured as petal-shaped movable pieces.

[0056] A sliding track 223 is arranged on the base plate 221, a guide rail 224 is arranged on the rotating disc 222, and a first sliding block 212 and a second sliding block 213 are arranged at the bottom of the leaf blade 211. The first sliding block 212 is slidably connected in the guide rail 224, and the second sliding block 213 extends through the guide rail 224 and is slidably connected in the sliding track 223. The leaf blade 211 is horizontally openable and closable under the cooperation of the first sliding block 212 and the guide rail 224 and the second sliding block 213 and the sliding track 223.

[0057] In the embodiment, the first sliding block and the second sliding block are a first section and a second section of the same sliding block, the shape of the second section sliding block is matched with the sliding track on the base plate, and the shape of the first section sliding block is matched with the guide rail on the rotating disc. In this way, the sliding block can be smoothly moved without shaking in the track and the guide rail due to the shape matching.

[0058] One sliding track 223 is arranged on the base plate 221 and one guide rail 224 is arranged on the rotating disc 222 corresponding to each leaf blade 211. The sliding track 223 is arranged as an arc-shaped track, and the guide rail 224 is arranged as a straight guide rail 224. The straight guide rail 224 is an open channel, and the second section sliding block 213 extends through the channel and is slidably connected with the arc-shaped track.

[0059] The opening and closing movement of the opening and closing part 21 is as shown in Figures 2 and 3, when the rotating disc 222 is rotated clockwise, the rotating disc 222 rotates relative to the base disc 221, the second segment sliding block 213 is limited in the sliding rail 223 and can only move in a curve along the arc-shaped rail, sliding to the outer end of the arc-shaped rail, while the first segment sliding block 212 moves linearly in the guide rail opening channel 224, at this time the blade 211 starts to unfold outward, conversely, when the rotating disc 222 is rotated counterclockwise, the blade 211 folds inward.

[0060] The embodiment also provides a spring module 4, which comprises a plurality of spliced conical springs 1 and bases 3; the bases 3 can be spliced between the bases 3 and between the bases 3 and the conical springs 1; and the conical springs 1 are arranged as conical springs 1 with variable sizes at the top, and the conical springs 1 are independent and not connected.

[0061] The spring module 4 is spliced again to form an elastic pad 5. The elastic pad 5 can be selected to be laid with a soft pad layer 6 on the upper layer of the spring module 4, and a cloth cover 7 is used as a use state.

[0062] The above description is only the preferred embodiment of the present application, but the design concept of the present application is not limited to this, any skilled person in the art can make non-essential changes to the present application within the technical range disclosed by the present application, and such changes are also within the scope of protection of the present application. Industrial applicability

[0063] The present application provides a spring unit with an expandable top supporting surface, a spring module composed of the spring unit and an elastic pad assembled by the spring module; the spring unit comprises the spring and a fixing sleeve, the spring is a conical structure, and the spring is arranged in the fixing sleeve; an expansion adjusting device is arranged at the top of the fixing sleeve; the expansion adjusting device comprises an opening and closing part, the opening and closing part is horizontally openable and closable at the top end surface; after the opening and closing part is unfolded outward, the opening and closing part forms an outer extension surface of the top end surface; after the opening and closing part is unfolded, the projection of the opening and closing part in the vertical direction is not less than or equal to the projection of the bottom of the fixing sleeve, and the bottom is the large end of the conical fixing sleeve; the problem of small top supporting area of the existing spring is solved, and the present application has industrial applicability.

Claims

1. A spring unit with an expandable top support surface, characterized by: It comprises a spring and a fixed sleeve, the spring is installed in the fixed sleeve; An expansion adjusting device is arranged on the top of the fixed sleeve; The expansion adjusting device comprises an opening and closing part, which is horizontally openable and closable at the top end surface; After the opening and closing part is unfolded, the projection of the opening and closing part in the vertical direction is less than or equal to the projection of the bottom of the fixed sleeve.

2. A spring unit with an expandable top support surface according to claim 1, characterized in that: The expansion adjusting device comprises an opening and closing part and a rotating part, the rotating part is screwed on the top of the fixed sleeve; the rotating part is used for rotating driving the opening and closing part to unfold or close horizontally.

3. A spring unit with an expandable top support surface according to claim 2, characterized in that: The opening and closing part comprises a plurality of blades, and the plurality of blades are spliced into a circular shape or a polygonal shape; The blade is a petal-shaped movable piece.

4. A spring unit with an expandable top support surface according to claim 3, characterized in that: The rotating part comprises a base plate and a rotating disc, the base plate is a fixed disc and is fixed on the top of the fixed sleeve; The rotating disc is rotatably installed on the base plate, and the blade is movably installed on the rotating disc.

5. A spring unit with an expandable top support surface according to claim 4, characterized in that: A sliding rail is arranged on the base plate, and a guide rail is arranged on the rotating disc; the bottom of the blade is provided with a first sliding block and a second sliding block; The first sliding block is slidably connected in the guide rail, and the second sliding block is slidably connected in the sliding rail through the guide rail; the rotating disc rotates, and the blade is guided to open and close horizontally by the first sliding block and the guide rail and the second sliding block and the sliding rail.

6. A spring unit with an expandable top support surface according to claim 5, characterized in that: The first sliding block and the second sliding block are first and second sections of the same sliding block, the shape of the second section sliding block is matched with the sliding rail on the base plate, and the shape of the first section sliding block is matched with the guide rail on the rotating disc.

7. A spring unit with an expandable top support surface according to claim 6, characterized in that: The sliding rail is arranged as an arc-shaped rail extending from the outer periphery of the base plate close to the shaft center; the guide rail is arranged as a radial linear guide rail; The bottom of the linear guide rail is arranged as an open channel, and the second sliding block passes through the channel and is slidably connected with the arc-shaped rail.

8. The top support surface expandable spring unit of claim 1, wherein: The spring is a conical spring, and a plurality of the conical springs can be stacked; After the opening and closing part is closed, the projection of the opening and closing part in the vertical direction is less than or equal to the projection of the top of the conical fixed sleeve.

9. A spring module, characterized by: The spring module comprises a plurality of spliced spring units and a base plate; the base plate and the base plate and the spring unit can be spliced; The spring unit is arranged as the top supporting expandable spring unit in any one of claims 1-8.

10. An elastomeric pad characterized by: The spring module is spliced according to claim 9; or comprises the top supporting surface expandable spring unit in any one of claims 1-8.

Images