Backrest supporting structure and backrest

Abstract

The utility model relates to a backrest supporting structure and a backrest, and relates to the technical field of furniture, the backrest supporting structure comprises: at least two buckling strips, each buckling strip is provided with a hanging part; the end part of the elastic piece is hooked with the hooking part, and the elastic piece is connected between any two buckling strips; wherein at least in the telescopic direction of the end part of the elastic piece, the hanging part has a displacement allowance for the end part of the elastic piece to move, and after the end part of the elastic piece is connected with the hanging part, the hanging part has a displacement allowance for the end part of the elastic piece to move in the telescopic direction, so that the elastic piece adapts to the stress of the elastic piece through stretching and retracting, and the deformation of the elastic piece is reduced; and thus, a better experience feeling is brought to the user.

Description

Technical Field

[0001] The present application relates to the field of furniture, and in particular to a backrest support structure and a backrest. Background Art

[0002] With the development of the furniture industry, people have higher and higher demands for furniture comfort. Existing sofas and chair backs are equipped with elastic parts to improve the comfort of users when leaning on them. In the prior art, hooks are installed on the backs to install the elastic parts, and the elastic parts are fixed to ensure the stability of the connection of the elastic parts.

[0003] With respect to the above-mentioned related technologies, the inventors found that the backrest elastic parts in the prior art are installed in a way that the ends are fixed. When the user leans on the elastic parts, the elastic parts will undergo elastic deformation. However, since the ends are fixed, the elastic parts can only adapt to the elastic deformation by their own deformation, which gives the user a poor experience. Utility Model Content

[0004] In order to solve the above problems, the present application provides a backrest support structure and a backrest, in which the ends of the elastic member are connected in a movably manner. When the elastic member is deformed under force, the ends thereof can be retracted and stretched to adapt to the deformation of the elastic member, giving the user a better experience.

[0005] The backrest support structure provided in this application adopts the following technical solution:

[0006] A backrest support structure comprises: at least two buckle strips having a hanging portion; an elastic member, an end of which is hung on the hanging portion, and the elastic member is connected between the two buckle strips; wherein: at least in the extension and contraction direction along the end of the elastic member, the hanging portion has a displacement margin for the end of the elastic member to move.

[0007] By adopting the above technical solution, the hanging part on the buckle strip is used to hang the end of the elastic part, and the hanging part has a displacement margin for the movement of the end of the elastic part, and enables the end of the elastic part to move along its extension direction to adapt to the extension of the elastic part, reduce the deformation of the elastic part itself, and give the user a better experience.

[0008] Optionally, the hanging portion has a displacement margin along the X direction and a displacement margin along the Y direction for the elastic member end to move, wherein: the X direction and the Y direction are not parallel or colinear, and the X direction, the Y direction and the expansion and contraction direction of the elastic member end are in the same plane.

[0009] By adopting the above technical solution, the hanging part has displacement margins in both the X direction and the Y direction for the end of the elastic member to move, and the X direction and the Y direction are neither parallel nor collinear, and the X direction, the Y direction and the extension and contraction direction of the end of the elastic member are in the same plane. During the elastic member's force extension and deformation process, the movement direction of the end of the elastic member will change, and the hanging part has displacement margins in both the X direction and the Y direction, so that the displacement of the end of the elastic member can be decomposed into the X direction and the Y direction, so that the displacement margin on the hanging part can meet the end displacement requirements of the elastic member during the deformation process, thereby improving the applicability and reliability of the structure.

[0010] Optionally, a connection space for inserting a connecting elastic member is provided on the hanging portion, wherein the X direction, the Y direction and the expansion and contraction direction of the end of the elastic member are located in a plane perpendicular to the direction in which the connection space is provided.

[0011] By adopting the above technical solution, the expansion and contraction direction of the end of the elastic member and the X direction and the Y direction are all located in the plane perpendicular to the through-opening direction of the connecting space, thereby reducing the possibility of the elastic member falling off from the connecting space during the expansion and contraction process and improving the structural reliability.

[0012] Optionally, after the elastic member is connected to the hanging portion, its end portion is bent.

[0013] By adopting the above technical solution, after the elastic member is connected to the hanging portion, the end portion thereof is bent to prevent the elastic member from falling out along the through-opening direction of the connecting space, thereby improving the structural reliability.

[0014] Optionally, the connection space includes a through hole formed on the hanging portion.

[0015] By adopting the above technical solution, the connecting space adopts a through hole, and the end of the elastic member is passed through the through hole and hung on the hanging part. Since the through hole is closed except for the axial direction, if the end of the elastic member needs to be detached from the hanging part, it must be moved along the direction of the through hole to detach, and the expansion and contraction direction of the end of the elastic member is in the plane perpendicular to the through hole. Therefore, the elastic member will not be detached from the through hole during the expansion and contraction process, thereby ensuring the reliability of the structure.

[0016] Optionally, the connection space includes a through slot formed through the hanging portion.

[0017] By adopting the above technical solution, the connection space adopts a through groove, so that the end of the elastic member can be directly hung on the hanging part from the groove, and there is no need to pass through it from the direction of the through groove, making the installation of the elastic member and the hanging part simpler, more convenient and quicker.

[0018] Optionally, an anti-slip portion is provided on the inner side wall of the through slot, and the width of the through slot at the anti-slip portion is smaller than the diameter of the steel wire of the elastic member.

[0019] By adopting the above technical solution, an anti-slip portion is provided on the side wall of the through slot, so that the through slot width at the anti-slip portion is smaller than the steel wire diameter of the elastic member, thereby reducing the possibility of the elastic member slipping out of the slot during expansion and contraction, thereby improving structural reliability.

[0020] Optionally, the side walls of the through slot are elastic.

[0021] By adopting the above technical solution, when the elastic part is hung from the notch into the through slot, the elastic part squeezes and opens the side wall of the through slot when passing the anti-slip portion, so that the elastic part can be smoothly hung in the through slot. Since the side wall of the through slot is elastic, the side wall of the through slot is elastically restored after the elastic part is hung in the through slot, thereby preventing the elastic part from slipping off. During the extension and retraction process, the elastic part needs to overcome the elastic force of the side wall of the through slot before it can detach from the notch, thereby ensuring the reliability of the structure. During disassembly, the elastic part can be separated from the hanging part by manually stretching the elastic part and making it overcome the elastic force of the side wall of the through slot. Disassembly is also simple and convenient.

[0022] Optionally, the anti-slip portion and the buckle strip are extruded integrally.

[0023] By adopting the above technical solution, the anti-slip part and the buckle strip are extruded integrally, and the production is simple and convenient.

[0024] The present application also provides a backrest adopting the following technical solution:

[0025] A backrest comprises the backrest supporting structure as described above.

[0026] By adopting the above technical solution and applying the above backrest support structure on the backrest, the user experience is improved.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. In the present application, after the end of the elastic member is connected to the hanging part, the hanging part has a displacement margin for the end of the elastic member to move along the telescopic direction, so that the elastic member can adapt to the force of the elastic member by telescoping, reducing the deformation of the elastic member, thereby giving the user a better experience;

[0029] 2. In a further configuration of the present application, the displacement margin can be decomposed into non-parallel and non-collinear X-direction and Y-direction to adapt to the change in the end movement direction when the elastic member is stretched and contracted, thereby improving the structural applicability and reliability;

[0030] 3. In a further configuration of the present application, a connecting space is provided on the hanging portion, and the connecting space may be in the form of a through hole or a through groove. When a through hole is used, the anti-slip performance of the elastic member is better, and when a through groove is used, the installation of the elastic member is simpler and more convenient. In addition, an anti-slip portion is provided on the side wall of the through groove to ensure a certain anti-slip performance and improve the structural reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a three-dimensional structural schematic diagram of a first embodiment of a backrest support structure;

[0032] Figure 2 yes Figure 1 Schematic diagram of the three-dimensional structure of the middle buckle strip and a partial enlarged schematic diagram;

[0033] Figure 3 yes Figure 1 A side view schematic diagram and a partial enlarged schematic diagram;

[0034] Figure 4 is a schematic diagram of the X direction, Y direction and S direction in the first embodiment;

[0035] Figure 5 is a three-dimensional structural schematic diagram of a second embodiment of a backrest support structure;

[0036] Figure 6 yes Figure 5 Schematic diagram of the three-dimensional structure of the middle buckle strip and a partial enlarged schematic diagram;

[0037] Figure 7 yes Figure 5 A side view schematic diagram and a partial enlarged schematic diagram;

[0038] Figure 8 is a three-dimensional structural schematic diagram of a third embodiment of a backrest support structure;

[0039] Fig. 9 yes Figure 8 Schematic diagram of the three-dimensional structure of the middle buckle strip and a partial enlarged schematic diagram;

[0040] Fig.10 yes Figure 8 A side view schematic diagram and a partial enlarged schematic diagram;

[0041] Fig.11 It is a three-dimensional structural schematic diagram of a backrest.

[0042] Explanation of the accompanying drawings: 1. Buckle strip; 11. Connecting part; 12. Hanging part; 13. Through hole; 14. Through groove; 15. Anti-slip part; 2. Elastic part; 3. Mounting part; 4. Mounting beam; 41. First mounting beam; 42. Second mounting beam; 43. Third mounting beam; 5. Back plate. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various configurations. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0047] The following is combined with Figure 1-11 This application is described in further detail.

[0048] An embodiment of the present application discloses a backrest support structure, including a buckle strip 1 and an elastic member 2, wherein: at least two buckle strips 1 are provided and the buckle strips 1 have a hanging portion 12, the elastic member 2 has two ends, one of which is hung with the hanging portion 12 on one of the buckle strips 1, and the other end is hung with the hanging portion 12 on the other buckle strip 1, so that the elastic member 2 can be connected between any two buckle strips 1, at least in the extension and contraction direction along the end of the elastic member 2, the hanging portion 12 has a displacement margin for the end of the elastic member 2 to move, specifically, the elastic member 2 adopts a serpentine spring.

[0049] When the backrest is in use, the user leans on the elastic member 2 and applies force to the elastic member 2, causing the elastic member 2 to deform and expand. During the expansion and contraction process, the end of the elastic member 2 can move to reduce the deformation of the elastic member 2, thereby improving the user experience.

[0050] The present application specifically discloses the following embodiments:

[0051] Embodiment 1

[0052] As attached Figure 1 To Attachment Figure 4 As shown, two buckle strips 1 are provided and both are in the shape of long strips and are produced by integral extrusion molding. The buckle strip 1 includes a connecting portion 11 and a hanging portion 12. The hanging portion 12 is punched into a plurality of parts by punching, and the hanging portions 12 are distributed along the length direction of the connecting portion 11. The side view cross-section of the buckle strip 1 at the hanging portion 12 is in a "T" shape or a "J" shape as a whole, so that the buckle strip 1 can be plugged and connected to the backrest. In this embodiment, five hanging portions 12 are punched out on the buckle strip 1, that is, five elastic members 2 can be connected between two buckle strips 1. According to the use requirements, the buckle strip 1 can be cut in the length direction to achieve a suitable use length.

[0053] The hanging portion 12 has a displacement margin in the X direction and a displacement margin in the Y direction for the end of the elastic member 2 to move, wherein: the X direction and the Y direction are not parallel or colinear, and the X direction, the Y direction and the direction of expansion and contraction of the end of the elastic member 2 are in the same plane. Specifically, a connection space for penetrating and connecting the elastic member 2 is opened on the hanging portion 12, wherein: the X direction, the Y direction and the direction of expansion and contraction of the end of the elastic member 2 are in a plane perpendicular to the opening direction of the connection space.

[0054] In this embodiment, the connection space includes a through hole 13 that penetrates and is opened on the hanging part 12. The through direction of the through hole 13 is consistent with the length direction of the connecting part 11. The cross section of the through hole 13 is strip-shaped. The spacing of the strip-shaped through hole 13 in the width and height directions is greater than the diameter of the steel wire of the elastic member 2, so that the elastic member 2 can move. Figure 3 As shown, in this embodiment, the left-right direction of the through hole 13 is the X direction, and the up-down direction of the through hole 13 is the Y direction. The elastic member 2 is connected between the two buckle strips 1 and is in an arc shape as a whole. When the elastic member 2 is subjected to the force F of the user leaning on it, the elastic member 2 will be stretched and deformed, and the end of the elastic member 2 is subjected to the partial force F' of F. The partial force F' causes the end of the elastic member 2 to move relatively away from the two sides of the elastic member 2. The displacement direction of the end of the elastic member 2 is S. The movement of the end of the elastic member 2 can be decomposed into partial displacements in the X direction and the Y direction, so as to avoid a large depression in the part of the elastic member 2 subjected to F, which affects the user experience.

[0055] It should be noted that during the expansion and contraction deformation of the elastic member 2, the displacement direction of the end of the elastic member 2 changes at all times, so the through hole 13 has a displacement margin for the end of the elastic member 2 to move in both the X direction and the Y direction to ensure that the end of the elastic member 2 can be smoothly displaced. If the through hole 13 only has a displacement margin in a single direction, when the displacement direction of the end of the elastic member 2 is perpendicular to the direction, it is easy to get stuck, and the structural reliability is low. In addition, in other embodiments, the X direction and the Y direction and the angle configuration can be customized, and it is only necessary to meet the displacement of the end of the elastic member 2 can be decomposed into the displacement in the X direction and the Y direction.

[0056] To further improve the structural reliability, after the end of the elastic member 2 is connected to the hanging portion 12 , the end of the elastic member 2 is bent to prevent the elastic member 2 from being separated from the hanging portion 12 along the through-opening direction of the through hole 13 .

[0057] When more than three buckle strips 1 are provided, the elastic member 2 can be connected between the hanging portions 12 on any two buckle strips 1 to meet various requirements of actual use.

[0058] Embodiment 2

[0059] As attached Figure 5 To Attachment Figure 7 As shown, the difference from the first embodiment is that the punching direction of the buckle strip 1 is changed when punching out a plurality of hanging portions 12. In this embodiment, the local connecting portion 11 is also punched out.

[0060] Embodiment 3

[0061] As attached Figure 8 To Attachment Fig.10 As shown, the difference from the first embodiment is that the connection space includes a through slot 14 that is provided through the hanging portion 12. Specifically, the through slot 14 is provided through the length direction of the connecting portion 11, and the notch of the through slot 14 in the upper buckle strip 1 is upward, and the notch of the through slot 14 in the lower buckle strip 1 is downward, so that the elastic member 2 can be directly hung in the through slot 14 to complete the connection with the hanging portion 12, and the installation is simple, convenient and quick.

[0062] It should be noted that, in this embodiment, the notches of the through grooves 14 on the hanging parts 12 connected at both ends of the same elastic member 2 are opposite, and when more than three buckle strips 1 are provided, the notches of the through grooves 14 in the hanging parts 12 of the buckle strip 1 located in the middle are partially facing upward and partially facing downward.

[0063] In a further configuration, an anti-slip portion 15 is provided on the inner wall of the through groove 14, and the width of the through groove 14 at the anti-slip portion 15 is smaller than the steel wire diameter of the elastic member 2, and the side wall of the through groove 14 is elastic, which facilitates the elastic member 2 to be hung in the through groove 14 while also having a certain anti-slip effect on the elastic member 2. The anti-slip portion 15 is extruded integrally with the buckle strip 1 to facilitate production and manufacturing.

[0064] The present application also discloses a backrest, as shown in the attached Fig.11 As shown, it includes two mounting parts 3, three mounting beams 4, a backboard 5 and a backrest support structure, wherein the number of buckle strips 1 in the backrest support structure is two. When the number of buckle strips 1 is more than three, the buckle strips 1 are distributed along the height direction of the backrest.

[0065] The mounting beam 4 is fixed between the two mounting members 3 , and from top to bottom are the first mounting beam 41 , the second mounting beam 42 and the third mounting beam 43 , and the back plate 5 is fixed between the first mounting beam 41 and the second mounting beam 42 .

[0066] The first mounting beam 41 and the third mounting beam 43 are provided with slots (not shown) for inserting the connecting portion 11 of the buckle strip 1 .

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A backrest support structure, characterized in that: include: Buckle strips (1), at least two of which are provided and the buckle strips (1) have a hanging portion (12); An elastic member (2), an end of which is hooked to the hooking portion (12), and the elastic member (2) is connected between any two of the buckle strips (1); wherein: at least in the extension and contraction direction along the end of the elastic member (2), the hooking portion (12) has a displacement margin for the end of the elastic member (2) to move.

2. The backrest support structure according to claim 1, characterized in that: The hanging portion (12) has a displacement margin in the X direction and a displacement margin in the Y direction for the end of the elastic member (2) to move, wherein: the X direction and the Y direction are neither parallel nor colinear, and the X direction, the Y direction and the extension and retraction direction of the end of the elastic member (2) are in the same plane.

3. The backrest support structure according to claim 2, characterized in that: The hanging portion (12) is provided with a connecting space for penetrating and connecting the elastic member (2), wherein the X direction, the Y direction and the direction of extension and retraction of the end of the elastic member (2) are located in a plane perpendicular to the direction in which the connecting space is provided.

4. The backrest support structure according to claim 3, characterized in that: After the elastic member (2) is connected to the hanging portion (12), the end portion thereof is bent.

5. The backrest support structure according to claim 3, characterized in that: The connection space comprises a through hole (13) extending through the hanging portion (12).

6. The backrest support structure according to claim 5, characterized in that: The connection space comprises a through slot (14) extending through the hanging portion (12).

7. The backrest support structure according to claim 6, characterized in that: An anti-slip portion (15) is provided on the inner side wall of the through slot (14), and the width of the through slot (14) at the anti-slip portion (15) is smaller than the diameter of the steel wire of the elastic member (2).

8. The backrest support structure according to claim 7, characterized in that: The side wall of the through groove (14) is elastic.

9. The backrest support structure according to claim 8, characterized in that: The anti-slip portion (15) and the buckle strip (1) are integrally extruded.

10. A backrest, characterized in that: The invention comprises a backrest support structure as claimed in any one of claims 1 to 9.

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