Spring and elastic mattress with custom-connected inner and outer waist rings

Abstract

An elastic mattress comprising a spring and said spring, wherein the inner waist ring (2) and the outer waist ring (4) are fitted together, the spring comprises a spring body (1), an inner waist ring (2), a flexible sleeve (3), and an outer waist ring (4); the inner waist ring (2) is fitted and coupled to the spring body (1) and the inner waist ring (2) is spaced apart from the force-receiving end of the spring body (1) by at least 1 / 4 spring length; the flexible sleeve (3) wraps around the spring body (1) and the inner waist ring (2); the outer waist ring (4) is snap-fitted to the inner waist ring (2), a connecting structure (41) is installed on the outer wall of the outer waist ring (4), and the two springs are connected through the connecting structure (41).

Description

Technology Field

[0001] The present application claims priority based on a Chinese patent application filed with the National Intellectual Property Administration of China on February 7, 2024, application number 2024101744756, titled "Spring and elastic mattress in which an inner waist ring and an outer waist ring are fitted together," and the contents of said Chinese patent application are incorporated herein by reference.

[0002] The present invention belongs to the field of elastic mattress technology, and specifically relates to a spring and an elastic mattress in which an inner waist ring and an outer waist ring are custom-connected. Background Technology

[0003] The elasticity exhibited by conventional spring-based elastic mattresses is elasticity as a whole, so when a local part receives pressure, the surrounding springs also receive pressure accordingly. In this way, elastic mattresses can withstand relatively large pressure, but the local elasticity cannot change according to changes in the human body's posture.

[0004] The aforementioned undesirable effect is primarily caused by the installation structure of the elastic mattress. Although each spring should provide elasticity independently, in conventional elastic mattresses, the upper ends of the springs are typically connected to each other, so the springs receive force together and provide elasticity together. Therefore, it is very important to ensure that the springs receive force independently without separating from each other, and only by doing so can the elastic mattress be realized to deform synchronously with the human body's posture. The problem to be solved

[0005] One of the objectives of the present invention is to overcome the defects of the prior art and to provide a spring and elastic mattress in which an inner waist ring and an outer waist ring are custom-connected. means of solving the problem

[0006] The technical solution of the present invention is as follows:

[0007] A spring in which an inner waist ring and an outer waist ring are fitted together, comprising a spring body, an inner waist ring, a flexible sleeve, and an outer waist ring;

[0008] Among them, the inner waist ring is fitted and coupled to the spring body, and the inner waist ring is spaced apart from the force-receiving end of the spring body by at least 1 / 4 spring length;

[0009] The flexible sleeve wraps around the spring body and the inner waist ring;

[0010] The outer waist ring is snap-connected to the inner waist ring, a connecting structure is installed on the outer wall of the outer waist ring, and two springs are connected through the connecting structure.

[0011] In some possible embodiments, the outer diameters of the upper and lower ends of the inner waist ring gradually increase in the direction away from the middle of the inner waist ring, and the height of the outer waist ring is smaller than the height of the inner waist ring.

[0012] In some possible embodiments, the outer diameter of the connection portion between the spring body and the inner waist ring is smaller than the inner diameter of the inner waist ring.

[0013] In some possible embodiments, both ends of the spring body are wound to form end face windings, and the spring body is provided with at least one set of positioning windings, the positioning windings being the windings of the spring body, the positioning windings being approximately parallel to the end face windings or approximately perpendicular to the elastic direction of the spring body, and the inner waist ring is snap-coupled to the positioning windings.

[0014] In some possible embodiments, the length of the positioning winding part is greater than or equal to half the circumference.

[0015] In some possible embodiments, the inner waist ring is integrally molded with the spring body.

[0016] In some possible embodiments, the inner waist ring and / or outer waist ring are formed by two to four arc members detachably snap-joined or hook-connected from the side.

[0017] In some possible embodiments, the connection method of the connection structure is a pin axis connection, a snap-fit ​​connection, an insert connection, or fixation through a position limiting block.

[0018] In some possible embodiments, the spring includes at least two inner waist rings and an outer waist ring corresponding to the number of inner waist rings.

[0019] As an elastic mattress, the elastic layer includes the above spring.

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

[0021] 1. The inner waist ring and the outer waist ring are custom-connected to the spring body, and the two springs are connected through a connection structure on the outer waist ring, ensuring that the springs are not separated from each other. At the same time, since the springs are connected to each other only through the outer waist ring, the springs are relatively independent, allowing them to receive force independently and move independently, thereby reducing interference with the elastic mattress and improving the comfort of the elastic mattress.

[0022] 2. Since the inner waist ring and the spring body are wrapped within a flexible sleeve, the fit between the inner waist ring and the outer waist ring improves the convenience of installing the outer waist ring and makes the connection between the outer waist ring and the spring body more stable compared to the installation method in which the outer waist ring is installed directly on the spring body.

[0023] 3. In some embodiments, the present invention designs at least one winding portion of the spring body as a positioning winding portion, and the positioning winding portion is approximately parallel to the end face winding portion or approximately perpendicular to the elastic direction of the spring body, so that positioning can be performed for the inner waist ring and the outer waist ring during the subsequent assembly process, and effectively prevents displacement of the outer waist ring during use, thereby improving the ease and stability of the connection between springs.

[0024] It is difficult to determine the inclination angle of a typical winding section, and consequently, it is difficult to standardize and produce the positioning groove of the connecting member for the typical winding section. If the positioning winding section is designed to be approximately parallel to the end surface winding section or approximately perpendicular to the elastic direction of the spring body, the position and shape of the positioning groove can be standardized.

[0025] In addition, when the spring undergoes elastic motion, the change in the angle of inclination of the positioning winding is relatively small. In particular, when the length of the positioning winding is greater than or equal to a single circumference, the positioning winding can maintain a direction approximately parallel to the end face winding or approximately perpendicular to the elastic direction of the spring body during elastic motion. Therefore, the inner waist ring and the outer waist ring can be stably fitted and coupled to the positioning winding, making it difficult for misalignment to occur during use. Brief explanation of the drawing

[0026] FIG. 1 is a schematic diagram of the structure of a spring provided by Example 1; FIG. 2 is a longitudinal cross-sectional view of a spring provided by Example 1; FIG. 3 is a longitudinal section view of the inner waist ring in Example 1; FIG. 4 is a schematic diagram showing the spring provided by Example 2 used in an elastic mattress; FIG. 5 is a schematic diagram of the structure of a spring provided by Example 2; FIG. 6 is a longitudinal cross-sectional view of a spring provided by Example 2; FIG. 7 is a schematic diagram of the structure of the spring body of Example 2; FIG. 8 is a longitudinal section view of the inner waist ring in Example 2; FIG. 9 is a schematic diagram showing the spring provided by Example 2 used in an elastic mattress; FIG. 10 is a schematic diagram of the structure of a spring provided by Example 3; FIG. 11 is a cross-sectional view of a spring provided by Example 3; FIG. 12 is a schematic diagram of the structure of a spring provided by Example 4; FIG. 13 is a cross-sectional view of the spring provided by Example 4. Specific details for implementing the invention

[0027] The technical solution of the present invention is further explained and described below through specific implementation methods.

[0028] Hereinafter, technical solutions in the embodiments of the present invention are described clearly and completely by combining the drawings in the embodiments of the present invention. Clearly, the described embodiments are preferred embodiments of the present invention and should not be construed as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative effort are all within the scope of protection of the present invention.

[0029] In the claims, specification, and drawings of the present invention, unless otherwise explicitly limited, the use of terms such as “height,” “top,” “top,” “bottom,” “inside,” “outside,” “top,” “bottom,” “front,” and “back” to indicate orientation or positional relationships is based on the orientation and positional relationships depicted in the drawings and is merely intended to facilitate the description of the present invention and to simplify the explanation. It does not indicate or imply that the indicated device or element must necessarily have a specific orientation or be configured and operated in a specific orientation, and therefore should not be understood as limiting the specific scope of protection of the present invention.

[0030] In the present invention, approximately parallel and approximately perpendicular refer to a case where, due to process limitations, there is an angle of less than 10° between the positioning winding part and the end face winding part, or the elastic direction of the positioning winding part and the spring body is 80° to 100°.

[0031] The spring body or the force-receiving end of the spring refers to the end that comes into contact with the user and receives pressure from the user, and in each of the following embodiments, the force-receiving end refers to the spring body or the top end of the spring.

[0032] The spring body is formed by winding a spring wire spirally, and the spring wire is wound once to form a coil section, and the coil sections at both ends of the spring body are end surface coil sections.

[0033] Example 1

[0034] The present embodiment represents a spring, and as illustrated in FIGS. 1 and 2, the spring comprises a spring body (1), an inner waist ring (2), a flexible sleeve (3), and an outer waist ring (4). The inner waist ring (2) is fitted and coupled to the middle portion of the spring body (1), and in other possible embodiments, the inner waist ring (2) may be installed at any location spaced apart from the end receiving force on the spring body (1) by at least 1 / 4 spring length. The main function of the inner waist ring (2) is to perform positioning with respect to the outer waist ring (4) during the subsequent installation process, and installing the inner waist ring (2) at the said location can relatively well ensure independence between the springs after they are connected to each other.

[0035] Specifically, the outer diameter of the inner waist ring (2) is larger than the inner diameter of the connection portion between the spring body (1) and the inner waist ring (2), and the inner waist ring (2) is press-fitted with the spring body (1); as shown in FIG. 3, the outer diameters of the upper and lower ends of the inner waist ring (2) gradually increase in the direction away from the middle to form a receiving groove (21). The height of the outer waist ring (4) is smaller than the height of the inner waist ring (2), and the outer waist ring (4) is fitted and coupled inside the ring-shaped receiving groove (21).

[0036] A connecting structure (41) is installed on each of the four sides (front, back, left, and right) of the outer waist ring (4), and the connecting structure (41) has a vertical opening, and after the openings of two connecting structures (41) overlap, a pin shaft connection can be performed through a third member to obtain an elastic mattress as shown in FIG. 4.

[0037] In this embodiment and each of the following embodiments, only a technical solution having one set of inner waist rings (2) and outer waist rings (4) has been described. In other possible implementations, to avoid the problem of poor stability of the elastic mattress formed due to local connections when the height of the spring is relatively large, two or more sets of inner waist rings (2) and outer waist rings (4) may be installed in the elastic direction of the spring, thereby significantly improving the stability and comfort of the elastic mattress.

[0038] In this embodiment, the flexible sleeve (3) wraps around the spring body (1) and the inner waist ring (2), and prevents entanglement of adjacent spring bodies (1) during elastic movement, thereby reducing mutual interference between springs.

[0039] Example 2

[0040] Considering that a technical solution of directly press-fitting the inner waist ring (2) and the spring body (1) may have a problem of relatively weak connection stability, the inventor additionally designed a technical solution in which the inner waist ring (2) is snap-fitted to the spring body (1), as shown in FIGS. 5 and 6, so that the inner waist ring (2), the outer waist ring (4), and the spring body (1) are fitted more precisely.

[0041] The main difference between Example 2 and Example 1 is that, as shown in FIG. 7, one of the coils in the middle part of the spring body (1) is a positioning coil (12), and the positioning coil (12) is parallel to the end face coil (11), and as shown in FIG. 8, a ring-shaped positioning groove (22) parallel to the positioning coil (12) is opened in the inner wall of the inner waist ring (2), and the positioning coil (12) is snap-coupled into the positioning groove (22).

[0042] In this embodiment, a connecting structure (41) is installed on each of the four sides (front, back, left, and right) of the outer waist ring (4), and the connecting structure (41) is a protruding column extending outward along the radial direction of the outer waist ring (4), and the end of the protruding column is enlarged to form a snap connection part. FIG. 9 shows an elastic mattress including a spring provided by this embodiment, and as shown in the drawing, a connecting structure (41) on each of the two springs is simultaneously snap-connected to a third member to realize a connection between the two springs.

[0043] Example 3

[0044] The structure of the spring provided by Example 3 is as shown in FIGS. 10 and 11, and the structure is similar to Example 2, the main difference being that the connection structure (41) is different.

[0045] The present embodiment is provided with an inner waist ring (2) and an outer waist ring (4), the inner waist ring (2) is snap-coupled to a positioning coil member (12) through a positioning groove (22) on its inner wall, the inner waist ring (2) is wrapped inside a flexible sleeve (3), and the outer waist ring (4) is fitted and coupled to the outside of the flexible sleeve (3), and four connecting structures (41) are installed along the circumference of the outer wall of the outer waist ring (4), and the connecting structures (41) are male and female members that fit together, and the spring implements the connection through the locking connection of the male and female members.

[0046] Example 4

[0047] The structure of the spring provided by Example 4 is as shown in FIGS. 12 and 13, and the structure is similar to Example 2, the main difference being that the connection structure (41) is different.

[0048] The present embodiment is provided with an inner waist ring (2) and an outer waist ring (4), and the inner waist ring (2) is snap-coupled to a positioning coil member (12) through a positioning groove (22) on its inner wall, and the inner waist ring (2) and the spring body (1) are wrapped inside a flexible sleeve (3), and the outer waist ring (4) is snap-coupled to the inner waist ring that wraps inside the flexible sleeve (3), and four connecting structures (41) are installed along the circumference of the outer wall of the outer waist ring (4), and the connecting structures (41) are male and female members that fit together. The female member of the present embodiment is a single sliding snap groove, and two snap holes are installed on two sides perpendicular to the sliding direction of the sliding snap groove, and correspondingly, the male member is a single slider, and two protrusions corresponding to the positions of the snap holes are installed on the slider, so that when the slider enters the sliding snap groove, the protrusions penetrate the snap holes and fix the slider inside the sliding snap groove.

[0049] In this embodiment, the snap member and the catch member are installed alternately, and in other possible implementations, they can be arbitrarily selected as needed.

[0050] The above is merely a preferred embodiment of the present invention and therefore cannot limit the scope of the invention; that is, all equivalent changes and modifications made in accordance with the patent scope and specifications of the present invention still fall within the scope covered by the present invention.

[0051] [Industrial Applicability]

[0052] The present invention discloses a spring in which an inner waist ring and an outer waist ring are fitted together, and an elastic mattress comprising said spring, wherein the spring comprises a spring body, an inner waist ring, a flexible sleeve, and an outer waist ring; wherein the inner waist ring is fitted and coupled to the spring body and is spaced apart from the force-receiving end of the spring body by at least 1 / 4 spring length; the flexible sleeve wraps around the spring body and the inner waist ring; the outer waist ring is snap-coupled to the inner waist ring, a connecting structure is installed on the outer wall of the outer waist ring, and the two springs are connected through the connecting structure. Since the inner waist ring and the outer waist ring are fitted together to the spring body and the two springs are connected through the connecting structure on the outer waist ring, it is ensured that the springs are not separated from each other, and since the springs are connected to each other only through the outer waist ring, the springs are relatively independent and can receive force independently and move independently, thereby reducing interference in the elastic mattress and improving the comfort of the elastic mattress, thus having industrial applicability. Explanation of the symbols

[0053] Drawing symbols in the drawing: 1-Spring body, 11-End face winding section, 12-Positioning winding section, 2-Inner waist ring, 21-Receiving groove, 22-Positioning groove, 3-Flexible sleeve, 4-Outer waist ring, 41-Connecting structure.

Claims

Claim 1 A spring in which an inner waist ring and an outer waist ring are fitted together, comprising a spring body, an inner waist ring, a flexible sleeve, and an outer waist ring; wherein the inner waist ring is fitted together with the spring body, and the inner waist ring is spaced apart from the force-receiving end of the spring body by at least 1 / 4 spring length; wherein the flexible sleeve wraps around the spring body and the inner waist ring; wherein the outer waist ring is snap-fitted to the inner waist ring, and a connecting structure is installed on the outer wall of the outer waist ring, and the two springs are connected through the connecting structure. Claim 2 A spring in which an inner waist ring and an outer waist ring are fitted together, characterized in that, in claim 1, the outer diameters of the upper and lower ends of the inner waist ring gradually increase in a direction away from the middle portion of the inner waist ring, and the height of the outer waist ring is smaller than the height of the inner waist ring. Claim 3 A spring in which an inner waist ring and an outer waist ring are fitted together, characterized in that, in claim 1 or 2, the outer diameter at the connection portion of the spring body with the inner waist ring is smaller than the inner diameter or diameter of the inner waist ring. Claim 4 A spring in which an inner waist ring and an outer waist ring are fitted together, wherein, in claim 1 or 2, both ends of the spring body are wound to form an end face winding section, the spring body has at least one set of positioning winding sections, the positioning winding section is a winding section of the spring body, the positioning winding section is approximately parallel to the end face winding section or approximately perpendicular to the elastic direction of the spring body, and the inner waist ring is snap-coupled to the positioning winding section. Claim 5 A spring in which an inner waist ring and an outer waist ring are fitted together, characterized in that, in claim 4, the length of the positioning winding part is greater than or equal to 1 / 2 of the circumference. Claim 6 A spring in which the inner waist ring and the outer waist ring are fitted together, characterized in that, in claim 1, the inner waist ring is integrally molded to the spring body. Claim 7 A spring in which the inner waist ring and the outer waist ring are fitted together, wherein, in claim 1, the inner waist ring and / or the outer waist ring are formed by two to four arc members detachably snap-connected or hook-connected from the side. Claim 8 A spring in which an inner waist ring and an outer waist ring are fittedly connected, characterized in that, in claim 1, the connection method of the connection structure is a pin shaft connection, a snap-fit ​​connection, an insertion connection, or a fixation through a position limiting block. Claim 9 A spring in which an inner waist ring and an outer waist ring are fitted together, characterized in that, in claim 1, it includes at least two inner waist rings and an outer waist ring corresponding to the number of inner waist rings. Claim 10 An elastic mattress, wherein the elastic layer comprises a plurality of springs according to any one of claims 1 to 9.

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