Elastic unit, spring module, spring and mattress

Abstract

The Company provides elastic units, spring modules, springs and mattresses. 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). The first end of the first elastic piece and the first ends of the two second elastic pieces are 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 connected to the second connecting piece. The first ends of the two second elastic pieces are located on either side of the first end of the first elastic piece, and the second ends of the two second elastic pieces are located on either side of the second end of the first elastic piece. The elastic unit has a raised state and a compressed state. When the elastic unit is in the raised state, a deformation space (150) is formed between the first elastic piece and the second elastic pieces. When the elastic unit is in the compressed state, the first elastic piece and the two second elastic pieces are flush with each other, and the first elastic piece is located between the two second elastic pieces. The elastic unit effectively reduces the occupied space.

Description

[Technical Field]

[0001] The present invention relates to the technical field of mattresses, and in particular to elastic units, spring modules, springs and mattresses.

[0002] Cross-reference to related applications This invention claims priority from a Chinese application bearing application number 2025219463511 and entitled "Elastic Unit, Spring Module, Spring and Mattress" filed with the China Patent Office on September 9, 2025, and a Chinese application bearing application number 2025222466356 and entitled "Elastic Unit, Spring Module, Spring and Mattress" filed with the China Patent Office on October 23, 2025, the entire contents of which are incorporated herein by reference. [Background technology]

[0003] Spring mattresses are common bedding items, and their internal structure is usually made up of a large number of metal springs, which form a support layer and provide a comfortable sleeping experience for users.

[0004] When transporting a spring mattress, the metal springs inside have a certain elastic limit even when compressed, making it impossible to further reduce the overall volume of the mattress. As a result, the mattress takes up a large amount of space and increases logistics costs. Summary of the Invention

[0005] Objects of the present invention include, for example, providing a resilient unit, a spring module, a spring and a mattress that can reduce the occupied space.

[0006] An embodiment of the present invention is implemented as follows.

[0007] In a first aspect, an embodiment of the present invention provides an elastic unit, the elastic unit including a first connecting piece, a second connecting piece, a first elastic piece, and two second elastic pieces, a first end of the first elastic piece and the first ends of the two second elastic pieces are connected to the first connecting piece, a second end of the first elastic piece and the second ends of the two second elastic pieces are 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 raised state and a compressed state, when the elastic unit is in the raised state, a deformation space is formed between the first elastic piece and the second elastic piece, and when the elastic unit is in the compressed state, the first elastic piece and the two second elastic pieces are flush with each other, and the first elastic piece is located between the two second elastic pieces.

[0008] Optionally, the second elastic piece includes a first convex portion, a concave portion, and a second convex portion connected in sequence, one end of the first convex portion away from the concave portion is connected to the first connecting piece, and one end of the second convex portion away from the concave portion is connected to the second connecting piece, and when the elastic unit is in a flipped-up state, the first convex portion and the second convex portion protrude in a direction away from the first elastic piece relative to the concave portion.

[0009] Optionally, a gap is provided between the first elastic piece and the second elastic piece.

[0010] Optionally, the first connecting piece, the second connecting piece, the first elastic piece and the second elastic piece are integrally molded, and / or the first connecting piece, the second connecting piece, the first elastic piece and the second elastic piece are all made of plastic.

[0011] In a second aspect, the present invention further provides a spring module, which includes a fixed rod and a plurality of sets of the elastic units, the plurality of sets of the elastic units being spaced apart along the length of the fixed rod.

[0012] Optionally, each set of elastic units includes two symmetrical elastic units, and the two first elastic pieces in the two elastic units are connected to each other, an engagement opening is formed between the two first elastic pieces, and the fixed rod engages in the engagement opening.

[0013] Optionally, the two first elastic pieces are connected via a third connecting piece, the engagement opening is formed between the third connecting piece and the two first elastic pieces, and locking portions are respectively protruded on opposing surfaces of the two first elastic pieces, and the third connecting piece and the locking portions respectively abut against two opposing surfaces of the fixed rod.

[0014] Optionally, the fixed rod is provided with a plurality of sets of protrusions spaced apart along its length, the plurality of sets of protrusions corresponding one-to-one to the plurality of sets of elastic units, each set of protrusions including two protrusion portions arranged opposite each other, the two first elastic pieces of each set of elastic units each having a first through hole, and the two protrusion portions of each set of protrusions respectively fitting into the first through holes of the two first elastic pieces of each set of elastic units.

[0015] Optionally, the protrusion includes two first engagement portions arranged symmetrically along the length of the fixed rod, and the first through hole of the first elastic piece corresponding to the protrusion simultaneously engages with the two first engagement portions.

[0016] Optionally, the thicknesses of the second elastic pieces of two elastic units in each set of said elastic units are different.

[0017] Optionally, each set of the elastic units includes two symmetrical elastic units, the first elastic pieces of the two elastic units are respectively provided with tenons, the fixed rod is provided with a plurality of engagement holes along its length, and the two tenons of the two elastic units are engaged with the same engagement holes.

[0018] In a third aspect, the present invention further provides a spring, comprising a plurality of the above-described spring modules, the plurality of spring modules being arranged in sequence, and the fixing rods of two adjacent spring modules being connected.

[0019] Optionally, two adjacent fixed rods are joined to form a set of protrusions, the protrusions including two protrusion portions arranged opposite each other, the two first elastic pieces of each set of elastic units having first through holes, and the two protrusion portions of the protrusions respectively fit into the first through holes of the two first elastic pieces of one set of elastic units among the plurality of sets of elastic units 100.

[0020] Optionally, the two first elastic pieces of at least one group of the elastic units each have a second through hole, and two second engaging portions are installed opposite each other at opposite ends of two adjacent fixed rods, and the two second engaging portions located on the same side of the two adjacent fixed rods both engage with the second through hole of one of the first elastic pieces.

[0021] In a fourth aspect, the present invention further provides a mattress, the mattress including a mattress body and the springs disposed within the mattress body.

[0022] The beneficial effects of the elastic unit, spring module, spring, and mattress according to the embodiments of the present invention are as follows: For example, the elastic unit is designed to reduce the occupied space. The elastic unit includes a first connecting piece, a second connecting piece, a first elastic piece, and two second elastic pieces, a first end of the first elastic piece and a first end of the two second elastic pieces are both connected to the first connecting piece, a second end of the first elastic piece and a second end 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 raised state and a compressed state, and when the elastic unit is in the raised state, a deformation space is formed between the first elastic piece and the second elastic piece. When the elastic unit is in the compressed state, the first elastic piece and the two second elastic pieces are flush with each other, and the first elastic piece is located between the two second elastic pieces.

[0023] When the elastic unit is subjected to a compressive force, the entire structure can change from a raised state to a compressed state, and at this time, the first elastic piece and the two second elastic pieces become flush with each other, eliminating the deformation space, thereby achieving a high compression ratio for the entire structure and significantly reducing the vertical space occupied by the elastic unit in the compressed state, which is also advantageous for reducing logistics costs for transportation.

[0024] In order to more clearly explain the technical aspects of the embodiments of the present invention, the drawings necessary for the description of the embodiments will be briefly described below. The drawings described only show some embodiments of the present invention and do not limit the scope. Those skilled in the art can obtain other related drawings based on these drawings without using inventive ability. [Brief explanation of the drawings]

[0025] [Figure 1] 2 is a schematic view of an elastic unit of a first type elastic module according to an embodiment of the present invention, taken from a first perspective; [Figure 2] 3 is a schematic view of the elastic unit of the first type elastic module according to the embodiment of the present invention, taken from a second perspective; [Figure 3] 1 is a schematic view of the elastic unit of the first type elastic module according to the embodiment of the present invention, taken from a third perspective; [Figure 4] 2 is a schematic diagram of a first type of elastic module according to an embodiment of the present invention; [Figure 5] FIG. 5 is an enlarged view of part A in FIG. [Figure 6] 4 is a schematic diagram showing the assembly state of the elastic unit and the fixed rod in the embodiment of the present invention. FIG. [Figure 7] 5 is a schematic diagram showing the elastic unit and the fixed rod separated state according to the embodiment of the present invention; FIG. [Figure 8] 1 is a partial exploded view of a second type of elastic module according to an embodiment of the present invention; [Figure 9] FIG. 9 is an enlarged view of part B in FIG. 8. [Figure 10] 10 is a schematic diagram illustrating the connection between the elastic unit and the fixed rod of the second type elastic module according to the embodiment of the present invention. [Figure 11] 3 is a schematic diagram illustrating the connection relationship between two adjacent first-type elastic modules in an embodiment of the present invention, viewed from a first perspective; FIG. [Figure 12] 4 is a second perspective view of the connection relationship between two adjacent first-type elastic modules in the embodiment of the present invention; FIG. [Figure 13] 1 is an exploded view showing the connection relationship between two adjacent fixed rods in an embodiment of the present invention; FIG. [Figure 14] 10 is an exploded view showing the connection relationship between two adjacent third-type elastic modules in an embodiment of the present invention; FIG. [Figure 15] 10 is a schematic diagram of an elastic unit of a third type elastic module according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0026] In order to make the objectives, technical features and advantages of the embodiments of the present invention clearer, the technical features of the embodiments of the present invention will be described below clearly and completely with reference to the drawings used in the embodiments of the present invention, and it goes without saying that the described embodiments are only some of the embodiments of the present invention and do not represent all of the embodiments. The components in the embodiments of the present invention shown in the drawings can be arranged and designed in various ways.

[0027] Therefore, the following detailed description of the embodiments of the present invention shown in the drawings merely illustrates selected embodiments of the present invention and does not limit the scope of the invention to be protected. All other embodiments that can be obtained by those skilled in the art based on the embodiments of the present invention without using their inventive abilities fall within the scope of protection of the present invention.

[0028] It should be noted that like reference numerals refer to like objects in the drawings, so that if a definition is made in one drawing, further definition and interpretation in other drawings is unnecessary.

[0029] In describing the present invention, the directions or positional relationships expressed by terms such as "upper," "lower," "inner," and "outer" are based on the drawings or are the normal arrangement directions or positional relationships of the product of the invention, and are merely for the purpose of explaining the present invention conveniently and simply. It should be understood that these terms do not limit the present invention, as they do not explicitly or implicitly indicate that the relevant devices or elements necessarily have a specific direction, or are configured or operated in a specific direction.

[0030] It should also be understood that terms such as "first," "second," and "third" are for descriptive purposes only and do not express or imply any relative importance.

[0031] The term "and / or" as used herein represents a relationship between related objects and represents a three-way relationship, for example, A and / or B represents a three-way relationship in which only A is present, both A and B are present, or only B is present.

[0032] Furthermore, unless there is a contradiction, the features in the embodiments of the present invention can be combined with each other.

[0033] As shown in FIGS. 1 to 3 , an embodiment of the present invention provides an elastic unit 100. 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. A first end of the first elastic piece 130 and first ends of the two second elastic pieces 140 are connected to the first connecting piece 110, and a second end of the first elastic piece 130 and 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 either side of the first end of the first elastic piece 130, and the second ends of the two second elastic pieces 140 are located on either side of the second end of the first elastic piece 130. The elastic unit 100 has a raised state and a compressed state. When the elastic unit 100 is in the raised state, a deformation space 150 is formed between the first elastic piece 130 and the second elastic piece 140. When the elastic unit 100 is in the compressed state, the first elastic piece 130 and the two second elastic pieces 140 are flush with each other, and the first elastic piece 130 is located between the two second elastic pieces 140.

[0034] The elastic unit 100 can be switched between a raised state and a compressed state. When the elastic unit 100 is in the raised state, a deformation space 150 is formed between the first elastic piece 130 and the two second elastic pieces 140. The existence of this deformation space 150 provides sufficient deformation space when the elastic unit 100 is subjected to external force, thereby providing cushioning and support functions. The deformation space 150 is an open hollow region formed between the first elastic piece 130 and the two second elastic pieces 140. The deformation space 150 penetrates the center of the elastic unit 100, allowing air to flow freely along the deformation space 150 during use. This significantly improves the breathability of the entire elastic unit 100, effectively alleviating the problem of poor ventilation when applied to bedding products such as mattresses.

[0035] When the elastic unit 100 is subjected to a compressive force, its entire structure changes from a raised state to a compressed state, at which point the first elastic piece 130 and the two second elastic pieces 140 become flush with each other, thereby eliminating the deformation space 150 and achieving a high compressibility of the entire structure. This design significantly reduces the vertical space occupied by the elastic unit 100 in the compressed state, thereby effectively resolving the problem of conventional spring mattresses having difficulty in further reducing their volume during transportation due to the compression limit of metal springs.

[0036] The flush structure of the elastic unit 100 in the compressed state is not rigidly locked, but retains its elastic deformation ability and can automatically return to the pop-up state after pressure is released. This elastic unit 100 is not only compressible, but also has elastic recovery properties during use.

[0037] In an optional embodiment, the second elastic piece 140 includes a first convex portion 141, a concave portion 142, and a second convex portion 143 connected in sequence. One end of the first convex portion 141 away from the concave portion 142 is connected to the first connecting piece 110, and one end of the second convex portion 143 away from the concave portion 142 is connected to the second connecting piece 120. When the elastic unit 100 is in the flipped-up state, the first convex portion 141 and the second convex portion 143 protrude in a direction away from the first elastic piece 130 relative to the concave portion 142.

[0038] When the elastic unit 100 is in the raised state, the first elastic piece 130 has an arc shape, and the first convex portion 141 and the second convex portion 143 of the second elastic piece 140 each protrude away from the first elastic piece 130 relative to the concave portion 142. That is, the first convex portion 141 and the second convex portion 143 are spatially bent in the opposite direction from the first elastic piece 130. This design allows the second elastic piece 140 to have a certain pre-bending structure when not under pressure. As a result, when compressed by an external force, the first convex portion 141 and the second convex portion 143 deform to absorb energy and return to their original shape after the pressure is released, achieving good elastic recovery performance.

[0039] The concave portion 142 functions as an intermediate portion connecting the first convex portion 141 and the second convex portion 143, and plays a role in cushioning and adjusting deformation during the process of receiving force, thereby allowing the second elastic piece 140 to maintain structural continuity and mechanical uniformity during the process of compression and elastic recovery.

[0040] This design gives the second elastic piece 140 a dual structural characteristic of rigid support and flexible deformation. In the raised state, the first convex portion 141 and the second convex portion 143 provide stable support for the elastic unit 100. In the compressed state, the first convex portion 141, the concave portion 142, and the second convex portion 143 deform in cooperation and return to their original shape, achieving elastic recovery.

[0041] In an optional embodiment, a gap 160 is provided between the first elastic piece 130 and the second elastic piece 140 .

[0042] During the deformation process of the elastic unit 100, the relative positions of the first elastic piece 130 and the two second elastic pieces 140 change, and especially in the compressed state, the first elastic piece 130 and the two second elastic pieces 140 become flush with each other. During this process, if there is no gap between the first elastic piece 130 and the second elastic pieces 140, surface contact is likely to occur, resulting in frictional resistance. This not only affects the deformation efficiency of the elastic unit 100, but also causes local stress concentration due to friction, which may affect the service life of the entire structure.

[0043] The existence of the gap 160 can ensure that the first elastic piece 130 can move smoothly between the two second elastic pieces 140 without experiencing any extra frictional resistance due to direct contact. This design is particularly suitable for the stability requirements of the elastic unit 100 during multiple compression and elastic recovery cycles, making the relative movement between the elastic pieces smoother and improving the dynamic response performance of the whole structure.

[0044] During the deformation process, the elastic unit 100 maintains the independence of the movement paths between the first elastic piece 130 and the second elastic piece 140, avoiding energy loss and structural wear due to contact friction and improving the durability and consistency of elastic recovery of the elastic unit 100.

[0045] 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 molded, 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.

[0046] The first connecting piece 110, the second connecting piece 120, the first elastic piece 130, and the second elastic piece 140 are integrally molded, ensuring that there are no seams or connecting members at the connections between each component, effectively improving the strength and reliability of the entire structure. In addition, the integral molding process significantly reduces the assembly steps in the production process, improving production efficiency and reducing the risk of failure due to loosening of the connection structure, thereby improving the stability and durability of the elastic unit 100 over long-term use.

[0047] The first connecting piece 110, the second connecting piece 120, the first elastic piece 130, and the second elastic piece 140 may all be made of plastic, which is lighter and has better elastic deformation ability than conventional metal materials, and is particularly suitable for elastic structures that require frequent compression and elastic recovery. In practical applications, selecting a plastic material not only reduces the overall weight of the mattress and makes it easier to transport and install, but also effectively overcomes the problem of oxidation caused by changes in humidity and temperature during long-term use, thereby extending the service life of the product.

[0048] 4 and 5, an embodiment of the present invention further provides a spring module 10. The spring module 10 includes a fixed rod 200 and a plurality of sets of elastic units 100 spaced apart along the length of the fixed rod 200.

[0049] By arranging multiple sets of elastic units 100 at intervals along the longitudinal direction of the fixed rod 200, the fixed rod 200 and the multiple sets of elastic units 100 form one spring module 10, which is advantageous for realizing modular assembly.

[0050] In an optional embodiment, each set of elastic units 100 includes two symmetrical elastic units 100, and the two first elastic pieces 130 in the two elastic units 100 are connected, an engagement opening 300 is formed between the two first elastic pieces 130, and the fixed rod 200 is engaged in the engagement opening 300.

[0051] The two symmetrically arranged elastic units 100 are connected by their respective first elastic pieces 130, and an engagement opening 300 for accommodating and fixing the fixed rod 200 is formed between the two first elastic pieces 130. The engagement opening 300 matches the cross-sectional contour of the fixed rod 200, allowing the fixed rod 200 to stably engage with the engagement opening 300, thereby achieving a reliable connection between the elastic units 100 and the fixed rod 200.

[0052] The fixed rod 200 serves as the main support member for the spring module 10, arranging multiple sets of elastic units 100 in an orderly manner along the length direction and serving as a base structure for connecting the spring modules 10 together. The elastic units 100 can be stably fixed to the fixed rod 200 by engaging the fixed rod 200 in the engagement opening 300 formed between the two first elastic pieces 130. This connection method avoids the rigid connection methods commonly used in conventional spring structures, such as bolts, welding, or riveting, which not only simplifies the assembly process but also reduces structural failure points and improves the durability and maintainability of the entire module.

[0053] In an optional embodiment, the two first elastic pieces 130 are connected via a third connecting piece 131, and an engagement opening 300 is formed between the third connecting piece 131 and the two first elastic pieces 130. A locking portion 132 is protruded from the opposing surfaces of the two first elastic pieces 130, and the third connecting piece 131 and the locking portion 132 abut against two opposing surfaces of the fixed rod 200, respectively.

[0054] The third connecting piece 131, together with the two first elastic pieces 130, forms an engagement opening 300 into which the fixed rod 200 can be firmly fitted, and to enhance the connection stability between the fixed rod 200 and the elastic unit 100, the opposing surfaces of the two first elastic pieces 130 are each provided with a protruding locking portion 132. The locking portion 132 locks the fixed rod 200 together with the third connecting piece 131 so that the two opposing surfaces of the fixed rod 200 abut against the third connecting piece 131 and the locking portion 132, respectively. This forms a two-way stopper structure to prevent the fixed rod 200 from falling off during use.

[0055] Through cooperation between the third connecting piece 131 and the locking portion 132, the fixed rod 200 is firmly sandwiched between the two first elastic pieces 130, eliminating the need for additional fasteners required in conventional connecting methods and ensuring the stability of the connecting structure and the possibility of repeated assembly. In addition, because each set of elastic units 100 is made entirely of plastic, it can maintain a certain degree of elastic deformation even when subjected to external force, and the integrity of the connecting structure can be maintained during the compression and elastic recovery processes.

[0056] In an optional embodiment, the fixed rod 200 is provided with a plurality of sets of protrusions spaced apart along its length, and the plurality of sets of protrusions correspond one-to-one to the plurality of sets of elastic units 100. Each set of protrusions includes two protrusion portions 210 arranged opposite each other, and the two first elastic pieces 130 of each set of elastic units 100 are respectively provided with first through holes 133, and the two protrusion portions 210 of each set of protrusions fit into the first through holes 133 of the two first elastic pieces 130 of each set of elastic units 100, respectively.

[0057] Two protrusions 210 of each set of protrusions extend outward from the surface of the fixed rod 200 and are arranged symmetrically on both sides of the fixed rod 200, and the protrusions 210 fit into the first through holes 133 of the first elastic pieces 130. When the elastic unit 100 is attached to the fixed rod 200, the two protrusions 210 of the fixed rod 200 are respectively fitted into the first through holes 133 of the two first elastic pieces 130. This fitting method firmly maintains the attachment position of the elastic unit 100 to the fixed rod 200 due to the tight fit between the protrusions 210 and the first through holes 133, and prevents displacement during use.

[0058] The engagement of the protrusion 210 with the first through-hole 133 achieves accurate positioning of the elastic unit 100 relative to the fixed rod 200, and the reliability of the connection between the elastic unit 100 and the fixed rod 200 can be maintained at all times when the elastic unit 100 is compressed or elastically recovered under force. There is no need to use any other fasteners between the elastic unit 100 and the fixed rod 200, which simplifies the assembly process, improves production efficiency, and contributes to making the entire spring module 10 easier to remove and maintain.

[0059] As shown in Figures 6 and 7, in an optional embodiment, the protrusion 210 includes two first engagement portions 211 arranged symmetrically along the length of the fixed rod 200, and the first through hole 133 of the first elastic piece 130 corresponding to the protrusion 210 simultaneously engages with the two first engagement portions 211.

[0060] When the protrusion 210 includes two first engagement portions 211, the two elastic units 100 in each set of elastic units 100 are arranged separately. The first elastic pieces 130 of the two elastic units 100 in each set of elastic units 100 correspond to the two protrusions 210 in each set of protrusions, respectively. For one protrusion 210, the first through-holes 133 of the first elastic pieces 130 corresponding to the protrusion 210 simultaneously engage with the two first engagement portions 211, which contributes to quick assembly of one elastic unit 100 and the fixed rod 200.

[0061] In an optional embodiment, the thicknesses of the second elastic pieces 140 of the two elastic units 100 in each set of elastic units 100 are different.

[0062] In any pair of elastic units 100, the thickness of the second elastic piece 140 of one elastic unit 100 is greater than the thickness of the second elastic piece 140 of the other elastic unit 100, and the thinner second elastic piece 140 has higher flexibility.

[0063] When the thinner second elastic piece 140 is positioned at the top, the upper part of the spring module 10 is deformed significantly when pressure is applied, and when the thicker second elastic piece 140 is positioned at the top, the upper part of the spring module 10 is deformed slightly when pressure is applied.

[0064] If the hardness of the spring module 10 needs to be adjusted, the elastic units 100 of each set can be inverted so that the positions of the two elastic units 100 in each set are swapped, and the hardness of the spring module 10 can be further changed.

[0065] As shown in Figures 8 to 10, in an optional embodiment, each set of elastic units 100 includes two symmetrical elastic units 100, the first elastic pieces 130 of the two elastic units 100 are each provided with a tenon portion 134, the fixed rod 200 is provided with a plurality of engagement holes 220 along its length, and the two tenon portions 134 of the two elastic units 100 are engaged with the same engagement hole 220.

[0066] The tenon portion 134 is approximately L-shaped, and the two tenon portions 134 of the two elastic units 100 in each set of elastic units 100 are inserted into the same engagement hole 220, and by engaging with the engagement hole 220, both of the two elastic units 100 are fixed relatively to the fixed rod 200.

[0067] A chamfered structure 1341 is provided on both the upper and lower sides of the end of the tenon portion 134 that is away from the first elastic piece 130 so that the tenon portion 134 can be stably engaged with the fixed rod 200 after passing through the engagement hole 220, thereby increasing the stability of the entire structure of the spring module 10.

[0068] The embodiment of the present invention further provides a spring, which includes a plurality of the spring modules 10, arranged in sequence, with the fixing rods 200 of two adjacent spring modules 10 connected together.

[0069] Due to the modular design, the spring can be formed by arranging multiple spring modules 10 in sequence and connecting the fixed rods 200 of two adjacent spring modules 10 to form a complete spring. The total length of the spring can be determined by selecting the number of spring modules 10 as needed.

[0070] As shown in Figures 11 to 13, in an optional embodiment, two adjacent fixed rods 200 are joined to form a set of protrusions, and the protrusions include two protrusion portions 210 arranged opposite each other, and first through holes 133 are opened in the two first elastic pieces 130 of each set of elastic units 100, and the two protrusion portions 210 of the protrusions are respectively fitted into the first through holes 133 of the two first elastic pieces 130 of one set of elastic units 100 among the multiple sets of elastic units 100.

[0071] When multiple spring modules 10 are arranged in sequence, the ends of two adjacent fixed rods 200 are butted against each other to form a continuous support structure. At the butting region of two adjacent fixed rods 200, the ends of the two fixed rods 200 are joined to form two outwardly protruding protrusions 210. These two protrusions 210 correspond to the first through-holes 133 of the two first elastic pieces 130 of one of the sets of elastic units 100. During assembly, the elastic unit 100 is aligned with the protrusions 210 through the first through-holes 133 of its first elastic piece 130, and the protrusions 210 are fitted into the first through-holes 133, thereby connecting the elastic unit 100 and the fixed rod 200 and further connecting the two adjacent fixed rods 200 together.

[0072] Two adjacent fixing rods 200 can be quickly butted together by fitting the protrusions 210 and the first through holes 133, allowing for quick assembly of two adjacent spring modules 10 and significantly improving assembly efficiency and structural stability. This type of connection method not only simplifies the production process but also makes the entire spring structure easier to disassemble and maintain, making it particularly suitable for mattresses where some modules need to be assembled or replaced on site.

[0073] As shown in Figures 14 and 15, in an optional embodiment, the two first elastic pieces 130 of at least one set of elastic units 100 each have a second through hole 135, and two second engagement portions 230 are installed opposite each other at the opposite ends of two adjacent fixed rods 200, and the two second engagement portions 230 located on the same side of the two adjacent fixed rods 200 engage with the second through hole 135 of one of the first elastic pieces 130.

[0074] Of two adjacent fixation rods 200, one fixation rod 200 has two second engagement portions 230 provided opposite one end thereof facing the other fixation rod 200, and similarly, the other fixation rod 200 also has two second engagement portions 230 provided opposite one another. The two second engagement portions 230 located on the same side of the two adjacent fixation rods 200 pass through the second through-holes 135 of one of the first elastic pieces 130 and engage with this second through-hole 135. The other two second engagement portions 230 located on the same side of the two adjacent fixation rods 200 pass through the second through-holes 135 of the other first elastic piece 130 and engage with this second through-hole 135. In this way, the two adjacent fixation rods 200 are connected.

[0075] To maintain the consistency of the spring structure, the fixed rod 200 may be provided with a second engaging portion 230 at a position other than the end thereof, and the two first elastic pieces 130 of the other set of elastic units 100 are correspondingly provided with second through-holes 135. The elastic units 100 are fixed to the fixed rod 200 by engaging the second engaging portion 230 with the second through-holes 135.

[0076] An embodiment of the present invention further provides a mattress, which includes a mattress body and the above-mentioned springs disposed within the mattress body.

[0077] Because the springs are joined together using multiple spring modules 10, the arrangement and quantity of springs can be flexibly adjusted during mattress production according to actual needs, allowing for precise adjustment of the firmness and support performance of the entire mattress. For example, the firmness can be adjusted by reducing or increasing the number of spring units within a spring module 10. Furthermore, the spring modules 10 can be sold separately in an unassembled state, facilitating individual packaging and transportation. Therefore, when the mattress is actually used, assembly can be performed on-site, significantly reducing the space required for transportation and improving logistics efficiency.

[0078] The elastic unit 100 of the spring can be in a raised state and a compressed state, and can achieve a high compression ratio by contracting the deformation space 150 when subjected to external pressure. This provides uniform support to the pressurized area of ​​the mattress and allows the mattress to quickly return to its original shape after the pressure is released, ensuring that the mattress maintains good elastic recovery performance and comfort even after long-term use. At the same time, the deformation space 150 formed between the first elastic piece 130 and the second elastic piece 140 of the elastic unit 100 can also improve air circulation within the mattress.

[0079] As described above, the embodiments of the present invention 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 a compressive force, its entire structure can change from a raised state to a compressed state. At this time, the first elastic piece 130 and the two second elastic pieces 140 become flush with each other, thereby eliminating the deformation space 150. This allows for a high compressibility of the entire structure, significantly reducing the vertical space occupied by the elastic unit 100 in the compressed state, and is also advantageous in reducing logistics costs for transportation.

[0080] The above description is merely a specific embodiment of the present invention, and does not limit the scope of protection of the present invention. Those skilled in the art may modify or replace the technical forms within the technical scope disclosed in the present invention, and these modifications or replacements are also included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention is subject to the content set forth in the claims. [Explanation of symbols]

[0081] 10...spring module, 100...elastic unit, 110...first connecting piece, 120...second connecting piece, 130...first elastic piece, 131...third connecting piece, 132...locking portion, 133...first through hole, 134...tenon portion, 1341...chamfered structure, 135...second through hole, 140...second elastic piece, 141...first convex portion, 142...concave portion, 143...second convex portion, 150...deformation space, 160...gap, 200...fixing rod, 210...projection portion, 211...first engaging portion, 220...engaging hole, 230...second engaging portion, 300...engaging opening

Claims

1. An elastic unit, It comprises a first connecting piece (110), a second connecting piece (120), a first elastic piece (130) and two second elastic pieces (140), a first end of the first elastic piece (130) and first ends of the two second elastic pieces (140) are both connected to the first connecting piece (110), and a second end of the first elastic piece (130) and 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 raised state and a compressed state. When the elastic unit (100) is in the raised state, a deformation space (150) is formed between the first elastic piece (130) and the second elastic piece (140). When the elastic unit (100) is in the compressed state, the first elastic piece (130) and the two second elastic pieces (140) are flush with each other, and the first elastic piece (130) is located between the two second elastic pieces (140). An elastic unit characterized by:

2. The second elastic piece (140) includes a first convex portion (141), a concave portion (142), and a second convex portion (143) connected in order, one end of the first convex portion (141) remote from the concave portion (142) is connected to the first connecting piece (110), and one end of the second convex portion (143) remote from the concave portion (142) is connected to the second connecting piece (120); When the elastic unit (100) is in a flipped-up state, the first convex portion (141) and the second convex portion (143) protrude from the concave portion (142) in a direction away from the first elastic piece (130). The elastic unit according to claim 1 .

3. The elastic unit according to claim 1, wherein a gap (160) is provided between the first elastic piece (130) and the second elastic piece (140).

4. The first connecting piece (110), the second connecting piece (120), the first elastic piece (130) and the second elastic piece (140) are integrally molded, 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. The elastic unit according to claim 1 .

5. The device includes a fixed rod (200) and a plurality of sets of elastic units according to claim 1, the plurality of sets of elastic units (100) being spaced apart along the length of the fixed rod (200). A spring module characterized by:

6. Each set of the elastic units (100) includes two symmetrical elastic units (100), The two first elastic pieces (130) of the two elastic units (100) are connected to each other, an engagement opening (300) is formed between the two first elastic pieces (130), and the fixed rod (200) is engaged in the engagement opening (300).

6. The spring module according to claim 5.

7. The two first elastic pieces (130) are connected via a third connecting piece (131), The engagement opening (300) is formed between the third connecting piece (131) and the two first elastic pieces (130); The two first elastic pieces (130) have respective engagement portions (132) projecting from their opposing surfaces, The third connecting piece (131) and the locking portion (132) abut against two opposing surfaces of the fixed rod (200), respectively.

7. The spring module according to claim 6.

8. The fixed rod (200) is provided with a plurality of sets of protrusions spaced apart along its length, the plurality of sets of protrusions corresponding one-to-one to the plurality of sets of elastic units (100); Each set of said projections includes two oppositely disposed projections (210); The two first elastic pieces (130) of each set of the elastic units (100) are each provided with a first through hole (133); Two protrusions (210) of each set of the protrusions are fitted into the first through holes (133) of the two first elastic pieces (130) of each set of the elastic unit (100).

6. The spring module according to claim 5.

9. The protrusion (210) includes two first engagement portions (211) symmetrically arranged along the length direction of the fixed rod (200), and the first through-hole (133) of the first elastic piece (130) corresponding to the protrusion (210) simultaneously engages with the two first engagement portions (211).

9. The spring module according to claim 8.

10. The thicknesses of the second elastic pieces (140) of the two elastic units (100) in each set of the elastic units (100) are different.

6. The spring module according to claim 5.

11. Each set of said elastic units (100) includes two symmetrical elastic units (100), The first elastic pieces (130) of the two elastic units (100) are each provided with a tenon portion (134), The fixed rod (200) is provided with a plurality of engagement holes (220) along its length, The two tenons (134) of the two elastic units (100) engage with the same engagement hole (220).

6. The spring module according to claim 5.

12. The spring module (10) according to claim 5 is provided, and a plurality of the spring modules (10) are arranged in order, and the fixing rods (200) of two adjacent spring modules (10) are connected to each other. A spring characterized by:

13. Two adjacent said fixed rods (200) are joined to form a set of protrusions; The protrusion includes two oppositely disposed protrusions (210), The two first elastic pieces (130) of each set of the elastic units (100) are provided with first through holes (133); Two of the protrusions (210) are fitted into the first through holes (133) of the two first elastic pieces (130) of one of the elastic units (100) of the plurality of elastic units (100).

13. The spring of claim 12.

14. The two first elastic pieces (130) of at least one set of the elastic units (100) each have a second through hole (135), Two second engaging portions (230) are respectively installed opposite to each other at both opposing ends of two adjacent fixed rods (200), The two second engagement portions (230) located on the same side of the two adjacent fixed rods (200) are both engaged with the second through-holes (135) of one of the first elastic pieces (130).

13. The spring of claim 12.

15. A mattress body and a spring according to any one of claims 12 to 14, wherein the spring is disposed within the mattress body. A mattress characterized by:

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