A chair back and chair back support connection structure and a seat

Abstract

This invention relates to a chair back and chair back support connection structure and a seat. The connection structure includes: a chair back (1) having a first receiving space (11) and a first boss (12) on the chair back (1); a chair back support (2) having a second boss (21) corresponding to the first receiving space (11) and a second receiving space (22) corresponding to the first boss (12); and a screw (3); the first receiving space (11) and the second boss (21) are engaged and connected, the first boss (12) and the second receiving space (22) are engaged and connected, and the screw (3) is connected to the first receiving space (11) and the second boss (21). Compared with the prior art, this invention has the advantages of improving the connection firmness and stability between the chair back support and the chair back.

Description

Technical Field

[0001] This invention relates to the field of seating technology, and in particular to a chair back and chair back support connection structure and a seat. Background Technology

[0002] Traditional chair backs are fixed and rarely disassembled except for maintenance. With societal development and increasing demand for diversity, these fixed backrests are no longer sufficient to meet individual needs. Therefore, the current trend is to design universal backrest brackets with standardized insertion points or slots, allowing different shaped backrests to be fitted together to meet personalized requirements. However, existing backrest brackets still suffer from insufficient connection strength and stability. Summary of the Invention

[0003] The purpose of this invention is to provide a chair back and chair back support connection structure and a seat, thereby improving the connection strength and stability between the chair back support and the chair back.

[0004] The objective of this invention can be achieved through the following technical solution: a connection structure between a chair back and a chair back support, comprising:

[0005] The chair back is provided with a first accommodating space and a first protrusion.

[0006] A chair back support, wherein the chair back support is provided with a second protrusion corresponding to a first accommodating space and a second accommodating space corresponding to the first protrusion;

[0007] Screws;

[0008] The first accommodating space and the second protrusion are engaged and connected, and the screw is connected to the first accommodating space and the second protrusion.

[0009] Preferably, two first accommodating spaces are symmetrically provided on the outer sides of the left and right sides of the chair back;

[0010] The inner sides of the left and right sides of the chair back support are symmetrically provided with two second protrusions corresponding to the first accommodating space.

[0011] More preferably, the first accommodating space is located at the two curved corners at the bottom of the chair back and has a stepped surface;

[0012] The second boss has a step structure that matches the step surface on the side near the first accommodating space.

[0013] More preferably, the second boss has an arc-shaped notch on the side away from the first accommodating space, which makes the second boss flush with the outer edge of the arc-shaped corner at the bottom of the chair back.

[0014] Preferably, the outer side of the chair back is provided with two first protrusions symmetrically;

[0015] The inner sides of the left and right sides of the chair back support are symmetrically provided with two second accommodating spaces corresponding to the first protrusion.

[0016] More preferably, the first protrusion is disposed above the first accommodating space and protrudes from the side surface of the chair back.

[0017] More preferably, the first protrusion is vertically downward, with its bottom flush and the side closest to the second accommodating space flush;

[0018] The second accommodating space has a flat surface that matches the first protrusion.

[0019] Preferably, both the first accommodating space and the second protrusion are provided with screw holes for screw connection.

[0020] More preferably, the screw holes of the first accommodating space are located at the upper end of the first accommodating space.

[0021] Preferably, the bottom of the second boss is provided with a countersunk hole corresponding to the screw.

[0022] Preferably, the screw head is fitted with a cap.

[0023] Preferably, the chair back support includes a U-shaped connecting part and an armrest part, a second protrusion and a second accommodating space are disposed in the U-shaped connecting part, the armrest part is integrally formed with the U-shaped connecting part and is located in front of the chair back.

[0024] More preferably, the second boss and the second accommodating space are located in the lower part of the U-shaped connecting portion.

[0025] A chair includes the aforementioned backrest and backrest support connection structure, and also includes a seat, wherein the backrest is connected to the seat via the backrest support.

[0026] Preferably, the bottom of the U-shaped connecting part of the chair back support is connected to the chair seat.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention improves the firmness and stability of the connection between the chair back and the chair back support by using the cooperation of the first accommodating space, the first boss, the second boss, the second accommodating space and the screws on the chair back and the chair back support.

[0029] 2. This invention can improve the disassembly and installation performance of seating;

[0030] 3. The chair back and chair back support of the present invention can accommodate each other on the left and right sides, ensuring sturdiness, stability, aesthetics, and the continuity of the chair back support and chair back lines;

[0031] 4. The present invention improves the engagement stability between the first accommodating space and the second protrusion through the structural design of the two.

[0032] 5. The structural design of the first boss and the second accommodating space in this invention facilitates the installation and connection of the chair back and the chair back support, and can further improve the firmness and stability of the connection between the chair back and the chair back support.

[0033] 6. This invention achieves an aesthetically pleasing connection and improved line smoothness between the chair back support and the chair back, ensuring neatness and strength at the connection point. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the connection structure between the chair back and the chair back support of the present invention. Figure 1 ;

[0035] Figure 2 This is a schematic diagram of the connection structure between the chair back and the chair back support of the present invention. Figure 2 ;

[0036] Figure 3 This is a schematic diagram of the connection process between the chair back and the chair back support of the present invention;

[0037] Figure 4 This is a schematic diagram of the structure of the chair back and chair back support after connection according to the present invention. Figure 1 ;

[0038] Figure 5 This is a schematic diagram of the structure of the chair back and chair back support after connection according to the present invention. Figure 2 ;

[0039] In the diagram: 1-chair back, 11-first accommodating space, 12-first boss, 2-chair back support, 21-second boss, 22-second accommodating space, 3-screw. Detailed Implementation

[0040] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] Example 1

[0044] A chair back and chair back support connection structure, such as Figure 1 As shown, it includes a chair back 1, a chair back support 2, and screws 3.

[0045] Specifically, such as Figure 2 As shown, the chair back 1 is provided with a first accommodating space 11 and a first protrusion 12, and the chair back support 2 is provided with a second protrusion 21 and a second accommodating space 22.

[0046] The second protrusion 21 corresponds to the first accommodating space 11, can be inserted into the first accommodating space 11 and engage with it. The second accommodating space 22 corresponds to the first protrusion 12, can be inserted into the second accommodating space 22 and engage with it. The screw 3 is connected to the first accommodating space 11 and the second protrusion 21, further improving the firmness and stability of the connection.

[0047] Example 2

[0048] A chair back and chair back support connection structure, in this embodiment, two first accommodating spaces 11 are symmetrically provided on the outer sides of the left and right sides of the chair back 1, two second protrusions 21 are symmetrically provided on the inner sides of the left and right sides of the chair back support 2, two first protrusions 12 are symmetrically provided on the outer side of the chair back 1, and two second accommodating spaces 22 are symmetrically provided on the inner sides of the left and right sides of the chair back support 2.

[0049] Specifically, the first accommodating space 11 is located at the two curved corners at the bottom of the chair back 1 and has a stepped surface. The second protrusion 21 has a stepped structure matching the stepped surface on the side near the first accommodating space 11. The first protrusion 12 is set vertically downward, with its bottom flush and the side near the second accommodating space 22 is flush. The second accommodating space 22 has a flush surface matching the first protrusion 12.

[0050] like Figure 3 As shown, when the chair back 1 and the chair back support 2 are connected, the chair back 1 moves from top to bottom toward the chair back support 2. The first protrusion 12 of the chair back 1 is inserted into the second receiving space 22 of the chair back support 2, and the second protrusion 21 of the chair back support 2 is inserted into the first receiving space 11 of the chair back 1. That is, the protrusions of the chair back 1 and the chair back support 2 are respectively placed into each other's receiving spaces, and then further tightened by screws 3.

[0051] The rest is the same as in Example 1.

[0052] Example 3

[0053] In this embodiment of a chair back and chair back support connection structure, the second boss 21 has an arc-shaped notch on the side away from the first accommodating space 11, and the bottom of the second boss 21 has a countersunk hole corresponding to the screw 3.

[0054] In existing technologies, screws, nail head decorations, cross-sectional divisions, and stepped surfaces are easily visible at the joint between the chair back support and the chair back, affecting the smoothness and aesthetics of the lines.

[0055] This embodiment, through this design, such as Figures 4-5 As shown, this design can further conceal connecting bosses and screws, which not only improves the aesthetics and the continuity of the chair back support and lines, but also reduces the risk of injury to users when they accidentally touch exposed bosses and screws, thus improving safety.

[0056] The rest is the same as in Example 2.

[0057] Example 4

[0058] A chair back and chair back support connection structure includes: a chair back support 2, a chair back 1, and two screws 3. The chair back support 2 has two receiving spaces (second receiving spaces 22) and two protrusions (second protrusions 21), which are respectively arranged on the left and right inner lower sides of the chair back support 2. The chair back 1 has two receiving spaces (first receiving spaces 11) and two protrusions (12), which are respectively arranged on the left and right outer lower sides of the chair back 1. After the chair back 1 and the chair back support 2 are connected, the protrusions are respectively inserted into the receiving spaces of the other. The lower ends of the left and right protrusions of the chair back support 2 are respectively provided with screw holes and countersunk holes. The upper ends of the left and right receiving spaces of the chair back 1 are respectively provided with screw holes. After the screws are connected, they are locked in the corresponding screw holes.

[0059] The chair back and chair back support connection structure provided by the present invention can accommodate each other on the left and right sides, ensuring sturdiness, stability, aesthetics, and the continuity of the chair back support and chair back lines.

[0060] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A connection structure between a chair back and a chair back support, characterized in that, include: The chair back (1) is provided with a first accommodating space (11) and a first protrusion (12); The chair back support (2) is provided with a second protrusion (21) corresponding to the first accommodating space (11) and a second accommodating space (22) corresponding to the first protrusion (12); Screw (3); The first accommodating space (11) and the second boss (21) are engaged and connected, the first boss (12) and the second accommodating space (22) are engaged and connected, and the screw (3) is connected to the first accommodating space (11) and the second boss (21).

2. The chair back and chair back support connection structure according to claim 1, characterized in that, The chair back (1) has two first accommodating spaces (11) symmetrically arranged on the outer sides of the left and right sides; The chair back support (2) has two second protrusions (21) symmetrically arranged on the inner sides of the left and right sides, corresponding to the first accommodating space (11).

3. The chair back and chair back support connection structure according to claim 2, characterized in that, The first accommodating space (11) is located at the two curved corners at the bottom of the chair back (1) and has a stepped surface; The second boss (21) has a step structure that matches the step surface on the side near the first accommodating space (11).

4. The chair back and chair back support connection structure according to claim 3, characterized in that, The second boss (21) has an arc-shaped notch on the side away from the first accommodating space (11) that makes the second boss (21) flush with the outer edge of the arc-shaped corner at the bottom of the chair back (1).

5. The chair back and chair back support connection structure according to claim 1, wherein, The outer side of the chair back (1) is symmetrically provided with two first protrusions (12); The chair back support (2) has two second accommodating spaces (22) symmetrically arranged on the inner sides of the left and right sides, corresponding to the first protrusion (12).

6. The chair back and chair back support connection structure according to claim 5, wherein The first protrusion (12) is located above the first accommodating space (11) and protrudes from the side surface of the chair back (1).

7. The chair back and chair back support connection structure according to claim 6, wherein The first protrusion (12) is vertically downward, with its bottom flush and the side closest to the second accommodating space (22) flush. The second accommodating space (22) has a flat surface that matches the first boss (12).

8. The chair back and chair back support connection structure according to claim 1, wherein, Both the first accommodating space (11) and the second boss (21) are provided with screw holes for screw (3) connection.

9. The chair back and chair back support connection structure according to claim 1, wherein, The bottom of the second boss (21) is provided with a countersunk hole corresponding to the screw (3).

10. A seat, characterized by The chair back and chair back support connection structure as described in any one of claims 1 to 9 are further comprising a chair seat, wherein the chair back (1) is connected to the chair seat via the chair back support (2).

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