Elastic unit, spring module, spring and mattress

Abstract

The application provides an elastic unit, a spring module, a spring and a mattress, and relates to the technical field of mattresses. The elastic unit comprises a first connecting sheet, a second connecting sheet, a first elastic sheet and two second elastic sheets, the first end of the first elastic sheet and the first ends of the two second elastic sheets are connected to the first connecting sheet, the second end of the first elastic sheet and the second ends of the two second elastic sheets are connected to the second connecting sheet, the first ends of the two second elastic sheets are located on the two sides of the first end of the first elastic sheet, and the second ends of the two second elastic sheets are located on the two sides of the second end of the first elastic sheet; wherein the elastic unit has a pop-up state and a compressed state, a deformation space is formed between the first elastic sheet and the second elastic sheet when the elastic unit is in the pop-up state, the first elastic sheet and the two second elastic sheets are coplanar when the elastic unit is in the compressed state, and the first elastic sheet is located between the two second elastic sheets, and the elastic unit can effectively reduce space occupation.

Description

Cross-references to related applications

[0001] This application claims priority to Chinese Patent Application No. 2025219463511, filed on September 9, 2025, entitled "Elastic Unit, Spring Module, Spring and Mattress", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of mattress technology, and more specifically, to an elastic unit, spring module, spring, and mattress. Background Technology

[0003] Spring mattresses, as a common type of bedding, typically consist of a large number of metal springs in their internal structure. These springs form a support layer, providing users with a comfortable sleep experience.

[0004] During the transportation of spring mattresses, the internal metal springs have a certain elastic limit even when compressed, which prevents the overall volume of the mattress from being further reduced, causing the mattress to take up more space and increasing logistics costs. Utility Model Content

[0005] The purpose of this application includes, for example, providing an elastic unit, spring module, spring, and mattress that can reduce space occupancy.

[0006] The embodiments of this application can be implemented as follows: In a first aspect, embodiments of this application provide an elastic unit, which includes a first connecting piece, a second connecting piece, a first elastic piece, and two second elastic pieces. The first end of the first elastic piece and the first ends of the two second elastic pieces are both connected to the first connecting piece, and the second end of the first elastic piece and the second ends of the two second elastic pieces are both connected to the second connecting piece. The first ends of the two second elastic pieces are located on both sides of the first end of the first elastic piece, and the second ends of the two second elastic pieces are located on both sides of the second end of the first elastic piece. The elastic unit has a popped-up state and a compressed state. When the elastic unit is in the popped-up state, a deformation space is formed between the first elastic sheet and the second elastic sheet. When the elastic unit is in the compressed state, the first elastic sheet and the two second elastic sheets are coplanar, and the first elastic sheet is located between the two second elastic sheets.

[0007] Optionally, the second elastic sheet includes a first convex segment, a concave segment, and a second convex segment connected in sequence. The end of the first convex segment away from the concave segment is connected to the first connecting piece, and the end of the second convex segment away from the concave segment is connected to the second connecting piece. When the elastic unit is in the popped-up state, the first convex segment and the second convex segment protrude away from the first elastic sheet relative to the concave segment.

[0008] Optionally, a gap is provided between the first elastic sheet and the second elastic sheet.

[0009] Optionally, the first connecting piece, the second connecting piece, the first elastic sheet, and the second elastic sheet are integrally formed, and / or, the first connecting piece, the second connecting piece, the first elastic sheet, and the second elastic sheet are all made of plastic.

[0010] Secondly, this application also provides a spring module, including a fixed rod and multiple sets of the above-described elastic units, wherein the multiple sets of elastic units are spaced apart along the length direction of the fixed rod.

[0011] Optionally, each set of elastic units includes two symmetrical elastic units, two of the first elastic sheets in the two elastic units are connected, a notch is formed between the two first elastic sheets, and the fixing rod is engaged in the notch.

[0012] Optionally, the two first elastic pieces are connected by a third connecting piece, and the bayonet is formed between the third connecting piece and the two first elastic pieces. A retaining part is protruded on the facing surfaces of the two first elastic pieces, and the third connecting piece and the retaining part abut against the two opposing surfaces of the fixing rod, respectively.

[0013] Optionally, the fixing rod is provided with multiple sets of protrusions at intervals along its own length direction. Each set of protrusions corresponds to a set of elastic units. Each set of protrusions includes two oppositely arranged protrusions. Each set of elastic units has a first through hole on each of the two first elastic plates. The two protrusions in each set of protrusions respectively cooperate with the first through holes on the two first elastic plates in each set of elastic units.

[0014] Optionally, the protrusion includes two first latching portions symmetrically arranged along the length direction of the fixing rod, and the first through hole on the first elastic piece corresponding to the protrusion engages with both first latching portions.

[0015] Optionally, the thickness of the second elastic sheet in the two elastic units in each group of elastic units is different.

[0016] Optionally, each set of elastic units includes two symmetrical elastic units, and the first elastic sheet of each of the two elastic units is provided with a tenon. The fixing rod is provided with multiple locking holes along its own length direction, and the two tenons of the two elastic units are engaged with the same locking hole.

[0017] Thirdly, this application also provides a spring, including the plurality of spring modules described above, wherein the plurality of spring modules are arranged in sequence and the fixing rods of two adjacent spring modules are connected.

[0018] Optionally, two adjacent fixing rods are spliced ​​together to form a set of protrusions. Each protrusion includes two opposing protrusions. Each set of elastic units has a first through hole on each of the two first elastic sheets. The two protrusions in the set of elastic units respectively cooperate with the first through holes on the two first elastic sheets of one set of elastic units.

[0019] Optionally, at least one set of the elastic units has two first elastic plates with second through holes, and two second latching parts are provided at opposite ends of two adjacent fixing rods. The two second latching parts of the two adjacent fixing rods located on the same side are engaged with the second through hole on one of the first elastic plates.

[0020] Fourthly, this application also provides a mattress, including a mattress body and the aforementioned spring, the spring being disposed within the mattress body.

[0021] The beneficial effects of the elastic unit, spring module, spring, and mattress provided in this application embodiment include, for example, reducing space occupation, an elastic unit is designed, which includes a first connecting piece, a second connecting piece, a first elastic piece, and two second elastic pieces. The first end of the first elastic piece and the first ends of the two second elastic pieces are all connected to the first connecting piece, and the second end of the first elastic piece and the second ends of the two second elastic pieces are all connected to the second connecting piece. The first ends of the two second elastic pieces are located on both sides of the first end of the first elastic piece, and the second ends of the two second elastic pieces are located on both sides of the second end of the first elastic piece. The elastic unit has a popped-up state and a compressed state. In the popped-up state, a deformation space is formed between the first elastic piece and the second elastic piece. In the compressed state, the first elastic piece and the two second elastic pieces are coplanar, and the first elastic piece is located between the two second elastic pieces.

[0022] When the elastic unit is subjected to compressive force, its overall structure can change from a spring-up state to a compressed state. At this time, the first elastic sheet and the two second elastic sheets are coplanar, and the deformation space disappears. This achieves a high degree of compression of the overall structure, which allows the elastic unit to significantly reduce its vertical space occupation in the compressed state, and also helps to reduce logistics costs during transportation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram from a first perspective of the elastic unit of the first type of elastic module in the embodiments of this application; Figure 2 This is a schematic diagram from a second perspective of the elastic unit of the first type of elastic module in the embodiments of this application; Figure 3 This is a schematic diagram from a third-person perspective of the elastic unit of the first type of elastic module in the embodiments of this application; Figure 4 This is a schematic diagram of the first type of elastic module in the embodiments of this application; Figure 5 for Figure 4 Enlarged view of section A; Figure 6 This is a schematic diagram illustrating the assembly of the elastic unit and the fixed rod in an embodiment of this application; Figure 7 This is a schematic diagram illustrating the separation of the elastic element and the fixed rod in an embodiment of this application; Figure 8 This is a partial exploded view of the second type of elastic module in the embodiments of this application; Figure 9 for Figure 6 Enlarged view of section B; Figure 10 This is a schematic diagram illustrating the connection between the elastic unit and the fixed rod of the second type of elastic module in this embodiment of the application. Figure 11 This is a schematic diagram showing the connection relationship between two adjacent first-type elastic modules from a first perspective in an embodiment of this application; Figure 12 This is a schematic diagram showing the connection relationship between two adjacent first type elastic modules from a second perspective in an embodiment of this application; Figure 13 This is an exploded view showing the connection relationship between two adjacent fixed rods in an embodiment of this application; Figure 14 This is an exploded view showing the connection relationship between two adjacent third type elastic modules in the embodiments of this application; Figure 15 This is a schematic diagram of the elastic unit of the third type of elastic module in the embodiments of this application.

[0025] Icons: 10-Spring module; 100-Elastic unit; 110-First connecting piece; 120-Second connecting piece; 130-First elastic piece; 131-Third connecting piece; 132-Holding part; 133-First through hole; 134-Tilt part; 1341-Chamfered structure; 135-Second through hole; 140-Second elastic piece; 141-First convex section; 142-Concave section; 143-Second convex section; 150-Deformation space; 160-Gap; 200-Fixing rod; 210-Protrusion; 211-First buckle part; 220-Snap hole; 230-Second buckle part; 300-Barrel opening. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this application, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0031] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0032] Please refer to Figures 1-3An embodiment of this application provides an elastic unit 100, including a first connecting piece 110, a second connecting piece 120, a first elastic piece 130, and two second elastic pieces 140. The first end of the first elastic piece 130 and the first ends of the two second elastic pieces 140 are connected to the first connecting piece 110. The second ends of the first elastic piece 130 and the second ends of the two second elastic pieces 140 are connected to the second connecting piece 120. The first ends of the two second elastic pieces 140 are located on both sides of the first end of the first elastic piece 130, and the second ends of the two second elastic pieces 140 are located on both sides of the second end of the first elastic piece 130. The elastic unit 100 has a spring-up state and a compressed state. In the spring-up state, a deformation space 150 is formed between the first elastic piece 130 and the second elastic pieces 140. In the compressed state, the first elastic piece 130 and the two second elastic pieces 140 are coplanar, and the first elastic piece 130 is located between the two second elastic pieces 140.

[0033] The elastic unit 100 can switch between a popped-up state and a compressed state. When the elastic unit 100 is in the popped-up state, a deformation space 150 is formed between the first elastic sheet 130 and the two second elastic sheets 140. The existence of this deformation space 150 allows the elastic unit 100 to have sufficient deformation space when subjected to external force, thereby providing cushioning and support functions. In addition, the deformation space 150 is an open hollow area formed between the first elastic sheet 130 and the two second elastic sheets 140. The deformation space 150 runs through the middle of the elastic unit 100. Therefore, during use, air can circulate freely along the deformation space 150, thereby significantly improving the overall breathability of the elastic unit 100. When applied to bedding products such as mattresses, it can effectively improve the problem of poor ventilation.

[0034] When the elastic unit 100 is subjected to compressive force, its overall structure changes from a spring-like state to a compressed state. At this time, the first elastic sheet 130 and the two second elastic sheets 140 are coplanar, and the deformation space 150 disappears, thereby achieving a high degree of compression of the overall structure. This design allows the elastic unit 100 to significantly reduce its vertical space occupation in the compressed state, thus effectively solving the problem that existing spring mattresses are difficult to further reduce in size during transportation due to the compression limit of metal springs.

[0035] The coplanar structure of the elastic unit 100 under compression is not in a rigid locked state, but retains elastic deformation capability, so that it can automatically return to the spring-up state after the pressure is released. The elastic unit 100 not only has compressibility, but also has resilience during use.

[0036] In an optional embodiment, the second elastic sheet 140 includes a first convex segment 141, a concave segment 142, and a second convex segment 143 connected in sequence. The end of the first convex segment 141 away from the concave segment 142 is connected to the first connecting piece 110, and the end of the second convex segment 143 away from the concave segment 142 is connected to the second connecting piece 120. When the elastic unit 100 is in the popped-up state, the first convex segment 141 and the second convex segment 143 protrude away from the first elastic sheet 130 relative to the concave segment 142.

[0037] When the elastic unit 100 is in the spring-up state, the first elastic sheet 130 is arc-shaped, and the first convex segment 141 and the second convex segment 143 of the second elastic sheet 140 protrude in a direction away from the first elastic sheet 130 relative to the concave segment 142. That is, the first convex segment 141 and the second convex segment 143 present a curved shape away from the first elastic sheet 130 in space. This design allows the second elastic sheet 140 to have a certain pre-bending structure when it is not under pressure, so that when it is compressed by external force, it can absorb energy through the deformation of the first convex segment 141 and the second convex segment 143, and return to its original shape after the pressure is released, thereby achieving good resilience performance.

[0038] The concave segment 142 serves as an intermediate transition connecting the first convex segment 141 and the second convex segment 143. During the stress process, it plays a role in buffering and coordinating deformation, enabling the second elastic sheet 140 to maintain the continuity of the structure and mechanical uniformity during compression and rebound.

[0039] This design allows the second elastic sheet 140 to possess both rigid support and flexible deformation characteristics in its structural form. In the spring-up state, the first convex segment 141 and the second convex segment 143 provide stable support for the elastic unit 100, while in the compressed state, the first convex segment 141, the concave segment 142, and the second convex segment 143 can work together to deform and restore their original shape, achieving rebound.

[0040] In an optional embodiment, a gap 160 is provided between the first elastic sheet 130 and the second elastic sheet 140.

[0041] During the deformation of the elastic unit 100, the relative positions of the first elastic sheet 130 and the two second elastic sheets 140 change, especially under compression, when the first elastic sheet 130 and the two second elastic sheets 140 are coplanar. If there is no gap between the first elastic sheet 130 and the second elastic sheets 140 during this process, surface contact is very likely to occur, leading to frictional resistance. This not only affects the deformation efficiency of the elastic unit 100 but may also cause localized stress concentration due to friction, thus affecting the service life of the overall structure.

[0042] The presence of gap 160 ensures that the first elastic sheet 130 can move smoothly between the two second elastic sheets 140 without being subjected to additional frictional resistance due to direct contact. This design is particularly suitable for the stability requirements of the elastic unit 100 in multiple compression and rebound cycles, making the relative movement between the elastic sheets smoother, thereby improving the dynamic response performance of the overall structure.

[0043] During the deformation process, the movement paths between the first elastic sheet 130 and the second elastic sheet 140 of the elastic unit 100 remain open and independent, avoiding energy loss and structural wear caused by contact friction, thereby improving the durability and rebound consistency of the elastic unit 100.

[0044] In an optional embodiment, the first connecting piece 110, the second connecting piece 120, the first elastic piece 130, and the second elastic piece 140 are integrally formed, and / or, the first connecting piece 110, the second connecting piece 120, the first elastic piece 130, and the second elastic piece 140 are all made of plastic.

[0045] The first connecting piece 110, the second connecting piece 120, the first elastic piece 130, and the second elastic piece 140 are integrally molded, thereby ensuring that there are no seams or connectors at the connection points between the components, effectively improving the overall strength and reliability of the structure. In addition, the integral molding process can significantly reduce the assembly steps in the production process, improve production efficiency, and reduce the risk of failure due to loose connection structures, thereby enhancing the stability and durability of the elastic unit 100 in long-term use.

[0046] The first connecting piece 110, the second connecting piece 120, the first elastic piece 130, and the second elastic piece 140 can all be made of plastic. Compared to traditional metal materials, plastic materials are lighter and have better elastic deformation capabilities, making them particularly suitable for elastic structures that require frequent compression and rebound. In practical applications, the choice of plastic materials not only helps reduce the overall weight of the mattress and improve the convenience of handling and installation, but also effectively resists oxidation problems caused by changes in humidity and temperature during long-term use, thereby extending the product's lifespan.

[0047] Please refer to Figure 4 , Figure 5 The embodiments of this application also provide a spring module 10, including a fixed rod 200 and multiple sets of the above-mentioned elastic units 100, wherein the multiple sets of elastic units 100 are spaced apart along the length direction of the fixed rod 200.

[0048] By arranging multiple sets of elastic units 100 at intervals along the length of the fixed rod 200, the fixed rod 200 and the multiple sets of elastic units 100 form a spring module 10, which facilitates modular assembly.

[0049] In an optional embodiment, each set of elastic units 100 includes two symmetrical elastic units 100, two first elastic sheets 130 in the two elastic units 100 are connected to each other, and a bayonet 300 is formed between the two first elastic sheets 130, and the fixing rod 200 is engaged in the bayonet 300.

[0050] Two symmetrically arranged elastic units 100 are connected by their respective first elastic plates 130, and a slot 300 is formed between the two first elastic plates 130 to accommodate and fix the fixing rod 200. The slot 300 is adapted to the cross-sectional profile of the fixing rod 200, so that the fixing rod 200 can be stably locked in it, realizing a reliable connection between the elastic unit 100 and the fixing rod 200.

[0051] The fixing rod 200, as the main load-bearing component of the spring module 10, serves to arrange multiple sets of elastic units 100 in an orderly manner along the length direction and to act as the basic structure for splicing between spring modules 10. By snapping the fixing rod 200 into the slot 300 formed between the two first elastic plates 130, the elastic units 100 can be stably fixed to the fixing rod 200. This connection method avoids the rigid connection methods such as bolts, welding, or riveting commonly found in traditional spring structures, which not only simplifies the assembly process but also reduces structural failure points and improves the overall durability and maintainability of the module.

[0052] In an optional embodiment, two first elastic pieces 130 are connected by a third connecting piece 131, and a bayonet 300 is formed between the third connecting piece 131 and the two first elastic pieces 130. A holding part 132 is protruded on the opposing surfaces of the two first elastic pieces 130, and the third connecting piece 131 and the holding part 132 respectively abut against two opposing surfaces of the fixing rod 200.

[0053] The third connecting piece 131 and the two first elastic pieces 130 together form a bayonet 300, allowing the fixing rod 200 to be securely embedded therein. To enhance the connection stability between the fixing rod 200 and the elastic unit 100, protruding retaining portions 132 are provided on the facing surfaces of the two first elastic pieces 130. The retaining portions 132 and the third connecting piece 131 together retain the fixing rod 200, so that the two opposite surfaces of the fixing rod 200 are respectively abutted by the third connecting piece 131 and the retaining portions 132, thereby forming a bidirectional limiting structure to prevent the fixing rod 200 from falling off during use.

[0054] Through the coordinated action of the third connecting piece 131 and the retaining part 132, the fixing rod 200 is firmly clamped between the two first elastic pieces 130, which avoids the additional fasteners required by traditional connection methods and ensures the stability and repeatability of the connection structure. In addition, since each set of elastic units 100 is made of plastic, it can still maintain a certain elastic deformation capacity when subjected to external force, thereby maintaining the integrity of the connection structure during compression and rebound.

[0055] In an optional embodiment, the fixing rod 200 is provided with multiple sets of protrusions at intervals along its own length direction. The multiple sets of protrusions correspond one-to-one with multiple sets of elastic units 100. Each set of protrusions includes two oppositely arranged protrusions 210. Each set of elastic units 100 has a first through hole 133 on each of the two first elastic plates 130. The two protrusions 210 in each set of protrusions respectively cooperate with the first through holes 133 on the two first elastic plates 130 in each set of elastic units 100.

[0056] Two protrusions 210 in each group extend outward from the surface of the fixing rod 200 and are symmetrically arranged on both sides of the fixing rod 200. The protrusions 210 are adapted to the first through holes 133 on the first elastic sheet 130. When the elastic unit 100 is installed on the fixing rod 200, the two protrusions 210 on the fixing rod 200 are respectively embedded into the first through holes 133 on the two first elastic sheets 130. This fitting method can make the installation position of the elastic unit 100 on the fixing rod 200 stable through the interference fit between the protrusions 210 and the first through holes 133, and prevent it from shifting during use.

[0057] The engagement of the protrusion 210 with the first through hole 133 enables precise positioning of the elastic unit 100 relative to the fixed rod 200, thus maintaining the reliability of the connection between the elastic unit 100 and the fixed rod 200 during compression or rebound. No additional fasteners are required between the elastic unit 100 and the fixed rod 200, simplifying the assembly process, improving production efficiency, and also enhancing the overall detachability and maintainability of the spring module 10.

[0058] Please refer to Figure 6 , Figure 7 In an optional embodiment, the protrusion 210 includes two first latching portions 211 symmetrically arranged along the length direction of the fixing rod 200, and the first through hole 133 on the first elastic piece 130 corresponding to the protrusion 210 engages with the two first latching portions 211.

[0059] It should be noted that when the protrusion 210 includes two first snap-fit ​​parts 211, the two elastic units 100 in each group of elastic units 100 are separately arranged, and the first elastic plates 130 of the two elastic units 100 in each group of elastic units 100 correspond to the two protrusions 210 in each group of protrusions. For a single protrusion 210, the first through hole 133 on the first elastic plate 130 corresponding to the protrusion 210 is simultaneously engaged with the two first snap-fit ​​parts 211, which is conducive to realizing the quick assembly of a single elastic unit 100 and the fixing rod 200.

[0060] In an optional embodiment, the second elastic sheet 140 of the two elastic units 100 in each set of elastic units 100 has a different thickness.

[0061] In any set of elastic units 100, the thickness of the second elastic sheet 140 of one elastic unit 100 is greater than the thickness of the second elastic sheet 140 of the other elastic unit 100, and the second elastic sheet 140 with a smaller thickness is more flexible.

[0062] When the thinner second elastic sheet 140 is located on top, the upper part of the spring module 10 deforms more when compressed; when the thicker second elastic sheet 140 is located on top, the upper part of the spring module 10 deforms less when compressed.

[0063] When it is necessary to adjust the stiffness of the spring module 10, the elastic units 100 can be flipped so that the positions of two elastic units 100 in each group are interchanged, thereby changing the stiffness of the spring module 10.

[0064] Please refer to Figures 8-10 In an optional embodiment, each set of elastic units 100 includes two symmetrical elastic units 100. The first elastic sheet 130 of the two elastic units 100 is provided with a tenon 134. The fixing rod 200 is provided with a plurality of locking holes 220 along its own length direction. The two tenons 134 of the two elastic units 100 are engaged with the same locking hole 220.

[0065] The latch 134 is roughly L-shaped. The two latches 134 on the two elastic units 100 in the single set of elastic units 100 are inserted into the same latching hole 220 and engage with the latching hole 220, so that the two elastic units 100 are fixed relative to the fixing rod 200.

[0066] The upper and lower sides of the tenon 134 away from the first elastic piece 130 are provided with chamfered structures 1341 so that the tenon 134 can be stably held on the fixing rod 200 after passing through the locking hole 220, thereby improving the overall stability of the spring module 10.

[0067] An embodiment of this application also provides a spring, including a plurality of the above-described spring modules 10, wherein the plurality of spring modules 10 are arranged in sequence, and the fixing rods 200 of adjacent two spring modules 10 are connected.

[0068] The spring is modularly designed, and multiple spring modules 10 can be arranged in sequence and the fixing rods 200 of two adjacent spring modules 10 can be connected to form a complete spring. The overall length of the spring can be selected according to the number of spring modules 10 as needed.

[0069] Please refer to Figures 11-13 In an optional embodiment, two adjacent fixing rods 200 are spliced ​​together to form a set of protrusions. The protrusions include two opposing protrusions 210. Each set of elastic units 100 has a first through hole 133 on each of the two first elastic plates 130. The two protrusions 210 in the protrusions respectively cooperate with the first through holes 133 on the two first elastic plates 130 of one set of elastic units 100.

[0070] When multiple spring modules 10 are arranged sequentially, the ends of two adjacent fixing rods 200 are joined together to form a continuous load-bearing structure. In the joint area of ​​two adjacent fixing rods 200, the ends of the two fixing rods 200 are spliced ​​to form two outwardly protruding protrusions 210. These two protrusions 210 correspond to the first through holes 133 on the two first elastic plates 130 of one set of elastic units 100. During assembly, the elastic unit 100 aligns with the protrusions 210 through the first through holes 133 on its first elastic plate 130, and the protrusions 210 are embedded into the first through holes 133, thereby achieving the connection between the elastic unit 100 and the fixing rods 200, and thus connecting two adjacent fixing rods 200 into a single unit.

[0071] Adjacent fixing rods 200 can be quickly connected through the cooperation of the protrusion 210 and the first through hole 133, enabling rapid assembly of adjacent spring modules 10, thereby significantly improving assembly efficiency and structural stability. This splicing method can complete the assembly without additional connectors or tools, which not only simplifies the production process but also improves the disassembly and maintainability of the overall spring structure, making it particularly suitable for mattresses that require on-site assembly or replacement of some modules.

[0072] Please refer to Figure 14 , Figure 15 In an optional embodiment, at least one set of elastic units 100 has two first elastic plates 130 with second through holes 135, and two second latching parts 230 are provided opposite to each other at the two ends of two adjacent fixing rods 200. The two second latching parts 230 on the same side of the two adjacent fixing rods 200 are engaged with the second through hole 135 on one of the first elastic plates 130.

[0073] In two adjacent fixing rods 200, one fixing rod 200 has two second latching parts 230 facing each other at one end towards the other fixing rod 200. Similarly, the other fixing rod 200 also has two second latching parts 230 facing each other. The two second latching parts 230 on the same side of the two adjacent fixing rods 200 pass through the second through hole 135 on one of the first elastic pieces 130 and engage with the second through hole 135. The other two second latching parts 230 on the same side of the two adjacent fixing rods 200 pass through the second through hole 135 on the other first elastic piece 130 and engage with the second through hole 135, thereby realizing the connection of the two adjacent fixing rods 200.

[0074] In order to maintain the uniformity of the spring structure, the fixing rod 200 can also be provided with a second buckle part 230 at other positions except the end. Correspondingly, the two first elastic plates 130 of the elastic unit 100 of the other group are provided with a second through hole 135. The elastic unit 100 can be fixed on the fixing rod 200 by engaging the second buckle part 230 with the second through hole 135.

[0075] An embodiment of this application also provides a mattress, including a mattress body and the aforementioned spring, the spring being disposed within the mattress body.

[0076] Because the springs are constructed from multiple spring modules 10, the arrangement and number of springs can be flexibly adjusted during the mattress manufacturing process according to actual needs. This allows for precise control over the overall firmness and support performance of the mattress; for example, the firmness can be adjusted by reducing or increasing the number of spring units in the spring module 10. Furthermore, the spring modules 10 can be independent units in their unassembled state, facilitating individual packaging and transportation. They are then assembled on-site during actual use, significantly reducing space occupancy during transportation and improving logistics efficiency.

[0077] The elastic element 100 in the spring has both a spring-loaded state and a compressed state. When subjected to external pressure, it can achieve high compression through the contraction of the deformation space 150, thereby providing uniform support in the pressure area of ​​the mattress. After the pressure is released, it quickly returns to its original shape, ensuring that the mattress maintains good resilience and comfort during long-term use. At the same time, the deformation space 150 formed between the first elastic sheet 130 and the second elastic sheet 140 in the elastic element 100 also improves the air circulation inside the mattress.

[0078] In summary, the embodiments of this application provide an elastic unit 100, a spring module 10, a spring, and a mattress. The elastic unit 100 includes a first connecting piece 110, a second connecting piece 120, a first elastic piece 130, and two second elastic pieces 140. When the elastic unit 100 is subjected to compressive force, its overall structure can change from a spring-like state to a compressed state. At this time, the first elastic piece 130 and the two second elastic pieces 140 are coplanar, and the deformation space 150 disappears, thereby achieving a high degree of compression of the overall structure. This allows the elastic unit 100 to significantly reduce its vertical space occupation in the compressed state, which is also beneficial for reducing logistics costs during transportation.

[0079] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An elastic unit, characterized by, It includes a first connecting piece (110), a second connecting piece (120), a first elastic piece (130), and two second elastic pieces (140). The first end of the first elastic piece (130) and the first ends of the two second elastic pieces (140) are both connected to the first connecting piece (110). The second end of the first elastic piece (130) and the second ends of the two second elastic pieces (140) are both connected to the second connecting piece (120). The first ends of the two second elastic pieces (140) are located on both sides of the first end of the first elastic piece (130), and the second ends of the two second elastic pieces (140) are located on both sides of the second end of the first elastic piece (130). The elastic unit (100) has a popped-up state and a compressed state. When the elastic unit (100) is in the popped-up state, a deformation space (150) is formed between the first elastic sheet (130) and the second elastic sheet (140). When the elastic unit (100) is in the compressed state, the first elastic sheet (130) and the two second elastic sheets (140) are coplanar, and the first elastic sheet (130) is located between the two second elastic sheets (140).

2. The elastic unit of claim 1, wherein, The second elastic sheet (140) includes a first convex segment (141), a concave segment (142), and a second convex segment (143) connected in sequence. The end of the first convex segment (141) away from the concave segment (142) is connected to the first connecting piece (110), and the end of the second convex segment (143) away from the concave segment (142) is connected to the second connecting piece (120). When the elastic unit (100) is in the popped-up state, the first convex segment (141) and the second convex segment (143) protrude away from the first elastic sheet (130) relative to the concave segment (142).

3. The elastic unit of claim 1, wherein, A gap (160) is provided between the first elastic sheet (130) and the second elastic sheet (140).

4. The elastic unit of claim 1, wherein, The first connecting piece (110), the second connecting piece (120), the first elastic piece (130) and the second elastic piece (140) are integrally formed, and / or the first connecting piece (110), the second connecting piece (120), the first elastic piece (130) and the second elastic piece (140) are all made of plastic.

5. A spring module, characterized in that, It includes a fixed rod (200) and multiple sets of elastic elements as described in any one of claims 1-4, wherein the multiple sets of elastic elements (100) are spaced apart along the length direction of the fixed rod (200).

6. The spring module of claim 5, wherein, Each set of elastic units (100) includes two symmetrical elastic units (100), two first elastic pieces (130) in the two elastic units (100) are connected to each other, and a bayonet (300) is formed between the two first elastic pieces (130), and the fixing rod (200) is engaged in the bayonet (300).

7. The spring module of claim 6, wherein, The two first elastic pieces (130) are connected by a third connecting piece (131). The bayonet (300) is formed between the third connecting piece (131) and the two first elastic pieces (130). A retaining part (132) is protruded on the opposing surfaces of the two first elastic pieces (130). The third connecting piece (131) and the retaining part (132) respectively abut against the two opposing surfaces of the fixing rod (200).

8. The spring module of claim 5, wherein, The fixing rod (200) is provided with multiple sets of protrusions at intervals along its own length direction. Each set of protrusions corresponds to a set of elastic units (100). Each set of protrusions includes two oppositely arranged protrusions (210). Each set of elastic units (100) has a first through hole (133) on each of the two first elastic pieces (130). The two protrusions (210) in each set of protrusions respectively cooperate with the first through holes (133) on the two first elastic pieces (130) in each set of elastic units (100).

9. The spring module according to claim 8, characterized in that, The protrusion (210) includes two first latching parts (211) symmetrically arranged along the length direction of the fixing rod (200). The first through hole (133) on the first elastic piece (130) corresponding to the protrusion (210) engages with the two first latching parts (211).

10. The spring module of claim 5, wherein, The thickness of the second elastic sheet (140) of the two elastic units (100) in each group of elastic units (100) is different.

11. The spring module of claim 5, wherein, Each set of elastic units (100) includes two symmetrical elastic units (100). The first elastic sheet (130) of the two elastic units (100) is provided with a tenon (134). The fixing rod (200) is provided with a plurality of locking holes (220) along its own length direction. The two tenons (134) of the two elastic units (100) are engaged with the same locking hole (220).

12. A spring characterized by, It includes multiple spring modules (10) as described in any one of claims 5-11, with the multiple spring modules (10) arranged in sequence and the fixing rods (200) of two adjacent spring modules (10) connected together.

13. The spring according to claim 12, characterized in that, Two adjacent fixing rods (200) are spliced ​​together to form a set of protrusions. The protrusions include two oppositely arranged protrusions (210). Each set of elastic units (100) has a first through hole (133) on each of the two first elastic plates (130). The two protrusions (210) in the protrusions respectively cooperate with the first through holes (133) on the two first elastic plates (130) of one set of elastic units (100).

14. The spring of claim 12, wherein, At least one set of elastic units (100) has a second through hole (135) on each of the two first elastic pieces (130). Two second latching parts (230) are provided opposite to each other at the two ends of two adjacent fixing rods (200). The two second latching parts (230) on the same side of the two adjacent fixing rods (200) are engaged with the second through hole (135) on one of the first elastic pieces (130).

15. A mattress characterized in that, The mattress includes a mattress body and a spring as described in any one of claims 12-14, wherein the spring is disposed within the mattress body.

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