Chair with replaceable seat back soft bag

Abstract

The utility model discloses a chair with a replaceable seat back soft package, which relates to the technical field of chairs, and comprises a cushion frame, a backrest frame, two armrests, a back cushion and a limit component, a plurality of universal wheels are uniformly fixed at the bottom of the cushion frame, the backrest frame is fixed on one side of the cushion frame, the two armrests are symmetrically fixed on two sides of the cushion frame, the back cushion is arranged in the backrest frame, and the limit component is arranged on the backrest frame. The limiting assembly comprises limiting shafts, the top of the backrest frame is in a Y shape, the multiple limiting shafts are located at the corners of the backrest frame respectively, through the arranged limiting shafts, when the back cushion is inserted into the backrest frame, the limiting shafts located at the corners of the backrest frame protrude out of the back cushion, the backrest frame is limited, the back cushion can be rapidly installed, and bolts do not need to be used.

Description

Technical Field

[0001] The utility model relates to the technical field of chairs, in particular to a chair with a replaceable seat back soft bag. Background Art

[0002] A chair is a common seat with a backrest and armrests that can be used by people when working or resting. Generally, a chair has a flexible material such as foam or cotton fixed to the seat and back, and then covered with leather, cloth, etc. The chairs in the office usually have soft back cushions and universal wheels at the bottom.

[0003] The various parts of the existing chairs are mostly connected by bolts. Once fixed, this connection method is not very convenient to disassemble. The soft seat back is light in material and is easily flattened or damaged. Since the various parts are fixed and connected by bolts, it is necessary to repeatedly tighten the bolts when replacing the soft seat back, which is time-consuming and laborious. Therefore, we propose a chair with a replaceable soft seat back. Utility Model Content

[0004] The purpose of the utility model is to provide a chair with a replaceable seat back cushion to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chair with a replaceable seat back, comprising a seat cushion frame, a backrest frame, armrests, a back cushion and a limiting assembly, a plurality of universal wheels are evenly fixed on the bottom of the seat cushion frame, the backrest frame is fixed to one side of the seat cushion frame, two armrests are provided, and the two armrests are symmetrically fixed on both sides of the seat cushion frame, the back cushion is arranged in the backrest frame, the limiting assembly includes a limiting shaft, the top of the backrest frame is Y-shaped, and a plurality of limiting shafts are respectively located at the corners of the backrest frame. The utility model uses the limiting shafts provided, so that when the back cushion is inserted into the backrest frame, the limiting shafts located at the corners of the backrest frame protrude from the back cushion to limit the backrest frame, and the back cushion can be quickly installed without the use of bolts.

[0006] Preferably, the limiting assembly also includes a compression spring, the back cushion is composed of a seat back soft bag and a plurality of mounting tubes embedded in the seat back soft bag, the limiting shaft is slidably connected to the mounting tube in the back cushion, the limiting shaft and the mounting tube in the back cushion correspond one to one, the compression springs are respectively fixed in the mounting tubes in the back cushion, the movable ends of the compression springs are fixed to the inner sides of the limiting shafts, and in the process of inserting the back cushion into the back frame, due to the presence of the compression spring, the limiting shaft can retreat into the back cushion when being squeezed, and when the limiting shaft moves to the specified position, that is, when the limiting shaft moves to the corresponding corner of the back frame, the limiting shaft protrudes out of the back frame under the action of the compression spring, and the back frame is limited and clamped, thereby completing the rapid installation and placement of the back cushion.

[0007] Preferably, the limiting shaft is stepped, and the outer end of the limiting shaft protrudes from the backrest frame, which can prevent the limiting shaft from sliding out of the back cushion as a whole.

[0008] Preferably, an embedding groove is provided on the outer side of the limiting shaft, an embedding block is slidably provided in the embedding groove, a connecting plate is provided on the outer side of the backrest frame, the embedding block is fixed to the connecting plate, and the connecting plate is used to limit and fix the limiting shafts in the same area at the same time, which can prevent the back cushion from moving forward and backward on the backrest frame.

[0009] Preferably, the embedding groove is located at the top of the outer side of the limiting shaft, so as to facilitate inserting the embedding block on the connecting plate into the embedding groove.

[0010] Preferably, the bottom of the backrest frame is arc-shaped, which can provide limited support for the bottom of the back cushion.

[0011] Preferably, a plurality of concave arc surfaces are distributed in an annular manner on the outer side of the connecting plate, so that a person can hold the connecting plate with one hand conveniently.

[0012] Preferably, a telescopic rod for adjusting the height is provided in the armrest.

[0013] Compared with the traditional technology, the beneficial effects of the utility model are:

[0014] 1. Through the setting of the limiting shaft, when the back cushion is inserted into the backrest frame, the limiting shaft located at the corner of the backrest frame protrudes from the back cushion to limit the backrest frame, so that the back cushion can be installed quickly without using bolts;

[0015] 2. By setting an embedding groove on the outside of the limit shaft, and then setting a connecting plate in the same limit shaft area, the embedding block on the connecting plate is inserted into the embedding groove on different limit shafts. At this time, the backrest frame is located between the back cushion and the connecting plate, so that the connecting plate is used to limit and fix the limit shafts in the same area at the same time, thereby preventing the back cushion from moving forward and backward on the backrest frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection process between the backrest frame and the back cushion of the utility model;

[0018] Figure 3 It is a partial cross-sectional schematic diagram of the structure of the limit shaft part of the utility model;

[0019] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0020] In the figure: 1-seat cushion frame; 2-backrest frame; 3-armrest; 4-back cushion; 5-limiting assembly; 6-universal wheel; 7-limiting shaft; 8-compression spring; 9-embedded groove; 10-embedded block; 11-connecting plate; 12-concave arc surface; 13-telescopic rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example:

[0023] See also Figure 1-Figure 4 The figure shows a chair with a replaceable seat back, comprising a cushion frame 1, a backrest frame 2, an armrest 3, a back cushion 4 and a limiting assembly 5. A plurality of universal wheels 6 are evenly fixed to the bottom of the cushion frame 1. The backrest frame 2 is fixed to one side of the cushion frame 1. Two armrests 3 are provided, and the two armrests 3 are symmetrically fixed to both sides of the cushion frame 1. A telescopic rod 13 for adjusting the height is provided in the armrest 3. The back cushion 4 is arranged in the backrest frame 2. The limiting assembly 5 includes a limiting shaft 7. The top of the backrest frame 2 is Y-shaped, and the bottom of the backrest frame 2 is arc-shaped, so that the bottom of the back cushion 4 can be limited and supported, and a plurality of limiting shafts 7 are respectively located at the corners of the backrest frame 2.

[0024] Some implementation methods of the present application are described in detail below with reference to the accompanying drawings:

[0025] See also Figure 1-Figure 4 By setting the limiting shaft 7, when the back cushion 4 is inserted into the back frame 2, the limiting shaft 7 located at the corner of the back frame 2 protrudes from the back cushion 4 to limit the back frame 2, so that the back cushion 4 can be quickly installed without using bolts.

[0026] Among them, the limiting assembly 5 also includes a compression spring 8, the back cushion 4 is composed of a seat back soft bag and a plurality of mounting tubes embedded in the seat back soft bag, the limiting shaft 7 is slidably connected with the mounting tube in the back cushion 4, the limiting shaft 7 corresponds to the mounting tube in the back cushion 4 one by one, the compression springs 8 are respectively fixed in the mounting tubes in the back cushion 4, and the movable ends of the compression springs 8 are fixed to the inner sides of the limiting shafts 7. In the process of inserting the back cushion 4 into the back frame 2, due to the existence of the compression spring 8, the limiting shaft 7 can retreat into the back cushion 4 when being squeezed. When the limiting shaft 7 moves to the specified position, that is, the limiting shaft 7 moves to the corresponding corner of the back frame 2, the limiting shaft 7 protrudes out of the back frame 2 under the action of the compression spring 8, and the back frame 2 is limited and clamped, so as to complete the rapid installation and placement of the back cushion 4. The limiting shaft 7 is stepped, and the outer end of the limiting shaft 7 protrudes out of the back frame 2, which can prevent the limiting shaft 7 from sliding out of the back cushion 4 as a whole.

[0027] Furthermore, an embedding groove 9 is provided on the outer side of the limit shaft 7, and an embedding block 10 is slidably provided in the embedding groove 9. A connecting plate 11 is provided on the outer side of the backrest frame 2. The embedding block 10 is fixed to the connecting plate 11. The connecting plate 11 is used to limit and fix the limit shaft 7 in the same area at the same time. A plurality of concave arc surfaces 12 are distributed in an annular manner on the outer side of the connecting plate 11, which is convenient for people to hold the connecting plate 11 with one hand.

[0028] It is worth noting that Figure 4 As shown, the embedding groove 9 is located at the top of the outer side of the limiting shaft 7, which facilitates the insertion of the embedding block 10 on the connecting plate 11 into the embedding groove 9.

[0029] When the backrest 2 is in the state of being moved, the stopper 7 of the backrest 2 is pressed against the stopper 7 and the stopper 7 is pressed against the stopper 7 by the stopper 7. When the backrest 2 is in the state of being moved, the stopper 7 is pressed against the stopper 7 by the stopper 7 and the stopper 7 is pressed against the stopper 7 by the stopper 7.

[0030] like Figure 2 As shown, at the bottom corner of the backrest frame 2, a limit shaft 7 and a connecting plate 11 for clamping and limiting are also provided, which cooperate with the arc-shaped bottom of the backrest frame 2 to provide limit support for the bottom of the back cushion 4, thereby effectively preventing the back cushion 4 from sliding left and right.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or may also include elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chair with a replaceable seat back cushion, characterized in that: include: A seat cushion frame (1), a backrest frame (2), an armrest (3), a back cushion (4) and a limiting assembly (5), wherein a plurality of universal wheels (6) are evenly fixed at the bottom of the seat cushion frame (1), the backrest frame (2) is fixed to one side of the seat cushion frame (1), two armrests (3) are provided, and the two armrests (3) are symmetrically fixed to the two sides of the seat cushion frame (1), the back cushion (4) is arranged in the backrest frame (2), the limiting assembly (5) comprises a limiting shaft (7), the top of the backrest frame (2) is Y-shaped, and a plurality of limiting shafts (7) are respectively located at the corners of the backrest frame (2).

2. A chair with replaceable seat back cushion according to claim 1, characterized in that: The limiting assembly (5) also includes a compression spring (8), the back cushion (4) is composed of a seat back soft bag and a plurality of mounting tubes embedded in the seat back soft bag, the limiting shaft (7) is slidably connected to the mounting tube in the back cushion (4), the limiting shaft (7) and the mounting tube in the back cushion (4) correspond one to one, the compression spring (8) is respectively fixed in the mounting tube in the back cushion (4), and the movable end of the compression spring (8) is fixed to the inner side of the limiting shaft (7).

3. A chair with replaceable seat back cushion according to claim 2, characterized in that: The limiting shaft (7) is in a stepped shape, and the outer end of the limiting shaft (7) protrudes from the backrest frame (2).

4. The chair with replaceable seat back cushion according to claim 3, characterized in that: An embedding groove (9) is provided on the outer side of the limiting shaft (7), an embedding block (10) is slidably provided in the embedding groove (9), a connecting plate (11) is provided on the outer side of the backrest frame (2), and the embedding block (10) is fixed to the connecting plate (11).

5. The chair with replaceable seat back cushion according to claim 4, characterized in that: The embedding groove (9) is located at the top of the outer side of the limiting shaft (7).

6. The chair with replaceable seat back cushion according to claim 1, characterized in that: The bottom of the backrest frame (2) is arc-shaped.

7. The chair with replaceable seat back cushion according to claim 4, characterized in that: A plurality of concave arc surfaces (12) are annularly distributed on the outer side of the connection plate (11).

8. The chair with replaceable seat back cushion according to claim 1, characterized in that: A telescopic rod (13) for adjusting the height is arranged inside the armrest (3).

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