A mounting structure for seat back support arm and back bracket

Abstract

The utility model belongs to office furniture, and discloses a mounting structure of a seat back support arm and a back support, wherein the rear end of the support arm and the left and right sides of one of the back support are respectively provided with rotation protrusions, and the left and right sides of the other are respectively provided with rotation grooves, wherein the rotation protrusions are rotationally matched with the rotation grooves, and an elastic member is arranged between the rear end of the support arm and the back support, and the elastic member is used to help the support arm to reset after rotation. The support arm of the utility model is connected to the back support through structures such as the rotation protrusion, the rotation groove, and the elastic member, and the support arm can rotate on the back support and can also reset after rotation, and has the advantages of simple structure, convenient installation, and flexible use.

Description

Technical Field

[0001] The utility model relates to the field of office furniture, in particular to an installation structure of a chair back support arm and a back bracket. Background Art

[0002] At present, the backrests of some seats are installed on the back support through support arms, which generally have the following problems:

[0003] 1) The installation structure of the cantilever and back support is not simple enough and the installation is not convenient enough;

[0004] 2) The cantilever cannot rotate on the back bracket, making it inflexible to use. Utility Model Content

[0005] The purpose of the present invention is to provide a mounting structure for a seat back support arm and a back bracket, so as to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A mounting structure for a seat back support arm and a back bracket, wherein the rear end of the support arm and the left and right sides of one of the back bracket are respectively provided with rotating protrusions, and the left and right sides of the other are respectively provided with rotating grooves, the rotating protrusions and the rotating grooves are rotatably engaged, and an elastic member is provided between the rear end of the support arm and the back bracket, and the elastic member is used to help the support arm reset after rotation.

[0008] Furthermore, a rotation protrusion is provided at the rear end of the support arm, and a rotation groove is provided on the back bracket.

[0009] Furthermore, the front part of the rotating protrusion is a semicircular block structure, and the rear part is a wedge block structure. The front side of the rotating groove is a semicircular groove structure that matches the semicircular block structure. The semicircular block structure is rotatably connected to the semicircular groove structure, and the wedge block structure guides the rotating protrusion to be stuck in the rotating groove.

[0010] Furthermore, a slot is provided on the back bracket, and a plug for plugging and cooperating with the slot is provided at the rear end of the support arm.

[0011] Furthermore, rotation protrusions are respectively provided on the left and right sides of the plug, and rotation grooves are respectively provided on the left and right sides of the slot.

[0012] Furthermore, the elastic member is a torsion spring.

[0013] Furthermore, a mounting rod is provided on the back bracket, and the elastic member is sleeved on the mounting rod, with one end thereof connected to the back bracket and the other end connected to the support arm.

[0014] Furthermore, a relief groove is provided at the rear end of the support arm, and one end of the elastic member is connected to the relief groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are: the support arm of the present invention is connected to the back bracket through structures such as rotating protrusions, rotating grooves, elastic parts, etc., the support arm can rotate on the back bracket, and can be reset after rotation, with the advantages of simple structure, easy installation and flexible use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model.

[0017] Figure 2 This is a schematic diagram of the decomposition structure of the utility model.

[0018] Figure 3 This is a schematic diagram of the back support structure of the utility model.

[0019] Figure 4 This is a schematic diagram of the support arm structure of the utility model.

[0020] Figure 5 This is a schematic diagram of the structure of the utility model in use state.

[0021] In the figure: back support 1, rotating groove 100, semicircular groove structure 1000, elastic member 101, slot 102, mounting rod 103, backrest 3, support arm 6, rotating protrusion 602, semicircular block structure 6020, wedge block structure 6021, plug 603, avoidance groove 604. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 5 A mounting structure for a seat back support arm and a back bracket, wherein rotating protrusions 602 are respectively provided on the left and right sides of the rear end of the support arm 6, and rotating grooves 100 are respectively provided on the left and right sides of the back bracket 1. The rotating protrusions 602 rotate in conjunction with the rotating grooves 100. An elastic member 101 is provided between the rear end of the support arm 6 and the back bracket 1. The elastic member 101 is used to help the support arm 6 return to its original position after rotation.

[0024] In another embodiment of the present invention, a rotation groove 100 may be provided on the support arm 6 , and a corresponding rotation protrusion may be provided on the back bracket 1 .

[0025] Continue reading Figure 2-Figure 4In one embodiment of the present invention, a slot 102 is provided on the back bracket 1, and a plug 603 for plugging into the slot 102 is provided at the rear end of the support arm 6. Rotation grooves 100 are respectively provided on the left and right sides of the slot 102, and corresponding rotation protrusions 602 are respectively provided on the left and right sides of the plug 603.

[0026] Continue reading Figure 2-Figure 4 In one embodiment of the present invention, the front part of the rotating protrusion 602 is a semicircular block structure 6020, and the rear part is a wedge block structure 6021. The front side of the rotating groove 100 is a semicircular groove structure 1000 that matches the semicircular block structure 6020. The semicircular block structure 6020 is rotatably connected to the semicircular groove structure 1000. A step is formed between the side wall of the slot 102 and the rotating groove 100. The wedge block structure 6021 guides the rotating protrusion 602 to cross the step and snap into the rotating groove 100. In this way, the rotating protrusion 602 is difficult to be pulled out after being snapped into the rotating groove 100.

[0027] Continue reading Figure 2 In one embodiment of the present invention, the elastic member 101 is a torsion spring. Specifically, a mounting rod 103 is provided in the slot 102 of the back support 1, and the elastic member 101 is sleeved on the mounting rod 103, with one end connected to the back support 1 and the other end connected to the support arm 6.

[0028] A relief groove 604 is further provided at the rear end of the support arm 6 , and one end of the elastic member 101 is connected to the relief groove 604 .

[0029] During installation, the plug 603 of the support arm 6 is inserted into the slot 102 of the back support 1. The wedge structure 6021 of the rotating protrusion 602 guides the rotating protrusion 602 inward and engages with the rotating groove 100 of the back support 1. The semicircular block structure 6020 of the rotating protrusion 602 rotates and engages with the semicircular groove structure 1000 of the rotating groove 100, thereby achieving rotational engagement between the support arm 6 and the back support 1. When the support arm 6 is fully inserted, the avoidance groove 604 of the support arm 6 contacts one end of the elastic member 101. When the support arm 6 rotates downward relative to the back support 1, the elastic member 101 can help the support arm 6 return to its original position.

[0030] The backrest 3 in the present invention is a lower backrest.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mounting structure for a seat back support arm and a back support, characterized in that: The rear end of the support arm (6) and the back support (1) are provided with rotational protrusions (602) on the left and right sides respectively, and the other one is provided with rotational grooves (100) on the left and right sides respectively, the rotational protrusions (602) and the rotational grooves (100) being rotationally matched, and an elastic member (101) is provided between the rear end of the support arm (6) and the back support (1), and the elastic member (101) is used to help the support arm (6) to return to its original position after rotation.

2. The mounting structure of the seat back support arm and the back support according to claim 1, characterized in that: A rotating protrusion (602) is provided at the rear end of the support arm (6), and a rotating groove (100) is provided on the back support (1).

3. The mounting structure of the seat back support arm and the back support according to claim 1, characterized in that: The front part of the rotating protrusion (602) is a semicircular block structure (6020), and the rear part is a wedge block structure (6021); the front side of the rotating groove (100) is a semicircular groove structure (1000) matching the semicircular block structure (6020); the semicircular block structure (6020) is rotatably connected to the semicircular groove structure (1000); and the wedge block structure (6021) guides the rotating protrusion (602) to be inserted into the rotating groove (100).

4. The mounting structure of the seat back support arm and the back support according to claim 1, characterized in that: A slot (102) is provided on the back support (1), and a plug (603) for plugging and mating with the slot (102) is provided at the rear end of the support arm (6).

5. The mounting structure of the seat back support arm and the back support according to claim 4, characterized in that: The left and right sides of the plug (603) are respectively provided with rotation protrusions (602), and the left and right sides of the slot (102) are respectively provided with rotation grooves (100).

6. The mounting structure of the seat back support arm and the back support according to claim 1, characterized in that: The elastic member (101) is a torsion spring.

7. The mounting structure of the seat back support arm and the back support according to claim 6, characterized in that: A mounting rod (103) is provided on the back support (1), and the elastic member (101) is sleeved on the mounting rod (103), with one end of the elastic member being connected to the back support (1) and the other end being connected to the support arm (6).

8. The mounting structure of the seat back support arm and the back support according to claim 7, characterized in that: A relief groove (604) is provided at the rear end of the support arm (6), and one end of the elastic member (101) is connected to the relief groove (604).

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