Office chair with swingable backrest

Abstract

The utility model provides an office chair with a swingable backrest, which relates to the technical field of office chairs and comprises a seat plate and a backup plate which are connected through a connecting component. The connecting assembly comprises an angle adjusting connecting plate, the angle adjusting connecting plate comprises a first connecting block and a second connecting block, and the included angle between the first connecting block and the second connecting block is an obtuse angle; the first connecting block is connected with the seat plate, and the second connecting block is rotationally connected with the backup plate. The chair has the advantages that the connecting assembly is arranged to connect the seat plate and the backup plate, so that the angle between the backup plate and the seat plate can be adjusted, the requirement of people for changing different postures in the using process is met, when the human body leans against the backup plate and the angle between the backup plate and the seat plate is pulled to the maximum, the semi-lying state can be achieved, and the chair is convenient to use. And after the person leaves, the telescopic component can automatically pull the backup plate back to the original position, the backup plate does not need to be reset manually, and therefore operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of office chairs, in particular to an office chair with a swingable backrest. Background Art

[0002] For people who work in office buildings, they spend most of the day sitting in office chairs to work, so the comfort of office chairs is particularly important for office workers. After sitting upright for a long time, if they can stretch their waist bones and shake their waist and back, it will be a kind of relaxation for the human body, which is conducive to continuing to work and improving work efficiency. Some office chairs on the market have adjustable backrests, and the angle between the backrest and the seat cushion can be adjusted, so that people can half-recline to rest after working tired for a period of time, but these backrest adjustment mechanisms are often too complicated, and the change of the semi-reclining state and the sitting state of the seat requires manual adjustment, which is very inconvenient to operate.

[0003] The technical content disclosed in the Chinese patent document (Announcement No.: CN214048190U, Patent Name: A Swingable Office Chair) is: when the office chair needs to be adjusted to a rocking chair for relaxation, first adjust the angle of the backrest, horizontal armrest and vertical armrest by rotating the adjustment device, rotate the adjustment rod, adjust the adjustment block from the horizontal state to the vertical state, and push the adjustment rod to the right from the horizontal guide groove, the adjustment rod drives the block to move to the right, the force of the block on the ratchet disappears, adjust the angle of the backrest, horizontal armrest and vertical armrest to a suitable position, reset the adjustment rod and the adjustment block, the ratchet is locked again, and then adjust the seat cushion to the front side of the sliding seat to ensure that the center of gravity of the person falls on the swing seat when lying down, rotate the rod member, disconnect the connection between the thread on the upper side of the rod member and the thread seat, and then connect the thread in the middle of the rod member to the thread seat, insert the pin in the pin seat into the second groove, and pull the slide bar out through the fixed block, increase the stability of the office chair through the fixed block and the slide bar, and after the adjustment is completed, the user lies on the office chair for rocking and relaxation.

[0004] It can be seen from the above implementation scheme that the office chair needs to rotate the adjustment lever to adjust the backrest, and it needs to be reset after adjustment, which also requires manual intervention. In addition, the adjustment device has many parts and a complex structure, which is not only very inconvenient to operate, but also very complicated for manufacturing and production, and the production cost is high. Utility Model Content

[0005] The utility model overcomes the shortcomings of the prior art, and provides a connecting assembly to connect the seat plate and the back plate, so that the angle between the back plate and the seat plate can be adjusted, thereby meeting the needs of different body posture changes during use.

[0006] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0007] An office chair with a rocking backrest comprises a seat plate and a backrest, wherein the seat plate and the backrest are connected via a connecting component;

[0008] The connection assembly includes an angle adjustment connection plate, the angle adjustment connection plate includes a first connection block and a second connection block, and the angle between the first connection block and the second connection block is an obtuse angle;

[0009] The first connecting block is connected to the seat plate, and the second connecting block is rotatably connected to the back plate.

[0010] Furthermore, the angle adjustment connecting plate is connected to the connecting rotating component, and the connecting rotating component is connected to the supporting plate.

[0011] Furthermore, the back plate includes a back plate, the lower end of the back plate is connected to the driving connection plate, and rotating connection guard plates are arranged on both sides of the back plate.

[0012] Furthermore, a telescopic member is connected below the seat plate.

[0013] Furthermore, the telescopic component includes a telescopic cylinder, one end of which is rotatably connected to the second connecting seat, the output end of the telescopic cylinder is connected to a fisheye joint, the fisheye joint is rotatably connected to the second connecting seat, the second connecting seat is connected under the seat plate, and the second connecting seat is connected to the driving connecting plate.

[0014] Furthermore, when the back plate is in contact with the lower side of the second connecting block, the angle between the seat plate and the back plate is the largest.

[0015] Furthermore, the angle adjustment connecting plate also includes a seat cushion connecting block, which is connected to the side of the second connecting block.

[0016] Furthermore, armrest bars are arranged on both sides of the seat plate, the cushion connecting block is connected to the upper surface of the seat plate, and the second connecting block is connected to the armrest bars.

[0017] Compared with the prior art, the beneficial effect of the utility model is that a connecting component is provided to connect the seat board and the back board, so that the angle between the back board and the seat board can be adjusted, thereby meeting the needs of different body posture changes during use. When the human body leans against the back board and pulls the angle between the back board and the seat board to the maximum, a semi-lying state can be achieved. After the person leaves, the telescopic component will automatically pull the back board back to its original position without the need for manual reset, so it is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a general schematic diagram of an office chair according to an embodiment of the utility model;

[0020] Figure 2 A perspective view of an office chair according to an embodiment of the present utility model;

[0021] Figure 3 A side view of an office chair according to an embodiment of the present utility model;

[0022] Figure 4 An exploded view of an office chair according to an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of a first embodiment of the angle adjustment connecting plate of the utility model;

[0024] Figure 6 It is a schematic diagram of a second embodiment of the angle adjustment connecting plate of the present invention.

[0025] In the figure: 1. seat plate; 101. armrest bar; 2. connection assembly; 201. angle adjustment connection plate; 2011. first connection block; 2012. second connection block; 2013. cushion connection block; 202. connection rotating component; 3. back plate; 301. drive connection plate; 302. rotation connection guard plate; 303. back plate; 4. telescopic member; 401. telescopic cylinder; 402. first connection seat; 4021. fisheye joint; 403. second connection seat. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] First embodiment

[0028] like Figures 1 to 5As shown, an office chair with a rocking backrest comprises a seat plate 1 and a back plate 3, wherein the seat plate 1 and the back plate 3 are connected via a connecting assembly 2; the connecting assembly 2 comprises an angle-adjusting connecting plate 201, wherein the angle-adjusting connecting plate 201 comprises a first connecting block 2011 and a second connecting block 2012, wherein the angle between the first connecting block 2011 and the second connecting block 2012 is an obtuse angle; the first connecting block 2011 is connected to the seat plate 1, the second connecting block 2012 is rotatably connected to the back plate 3, the angle-adjusting connecting plate 201 is connected to the connecting rotating component 202, and the connecting assembly 201 is connected to the connecting rotating component 202. The rotating component 202 is connected to the backboard 3, so the office chair of the utility model can meet the needs of different body posture changes during use. The telescopic component 4 is connected under the seat board 1. When the human body leans against the backboard 3 and pulls the angle between the backboard 3 and the seat board 1 to the maximum, a semi-lying state can be achieved. After the person leaves, the telescopic component 4 will automatically pull the backboard back to its original position without manual reset. Therefore, it is easy to operate. Moreover, since the components are simple, the processing and production cost is also low, which solves the time cost and material cost for production.

[0029] The back plate 3 includes a back plate 303, the lower end of the back plate 303 is connected to the driving connecting plate 301, and rotating connecting guard plates 302 are arranged on both sides of the back plate 303. The connecting rotating component 202 is installed inside the guard plate 302. The guard plate 302 can prevent the connecting rotating component 202 from being impacted by the outside and prevent dust from falling onto the connecting rotating component 202, thereby ensuring the continuous and effective operation of the connecting rotating component 202.

[0030] The telescopic member 4 includes a telescopic cylinder 401, one end of which is rotatably connected to the second connecting seat 403, the output end of the telescopic cylinder 401 is connected to the fisheye joint 4021, the fisheye joint 4021 is rotatably connected to the second connecting seat 403, the second connecting seat 403 is connected to the bottom of the seat plate 1, and the second connecting seat 403 is connected to the driving connecting plate 301. The telescopic cylinder 401 is an air cylinder or an oil pressure spring cylinder, so when a person presses down on the backrest 3, the output end of the telescopic cylinder 401 is actually pushed back into the telescopic cylinder 401. After the person leaves, due to the air pressure or oil pressure inside the telescopic cylinder 401, the push rod of the telescopic cylinder 401 is pushed out, and the push rod pushes the driving connecting plate 301, thereby reducing the angle between the backrest 3 and the seat plate 1, so that the back of the person is supported when sitting down.

[0031] When the backboard 303 is in contact with the lower side of the second connecting block 2012, the angle between the seat board 1 and the backboard 3 is the largest. Due to the existence of the second connecting block 2012, the angle between the backboard 3 and the seat board 1 is limited to a certain extent, so that when a person leans back, he will not fall backwards. In addition, when half-lying down, the angle between the backboard 3 and the seat board 1 is opened to the maximum and then stops, thus ensuring the safety of the person.

[0032] Second embodiment

[0033] like Figure 6 As shown, the difference between the second embodiment and the first embodiment is that the angle adjustment connecting plate 201 also includes a cushion connecting block 2013, the cushion connecting block 2013 is connected to the side of the second connecting block 2012, armrest bars 101 are arranged on both sides of the seat board 1, the cushion connecting block 2013 is connected to the upper surface of the seat board 1, and the second connecting block 2012 is connected to the armrest bar 101. Because the angle adjustment connecting plate 201 is connected and fixed to the upper surface and the side of the seat board 1, the connection between the angle adjustment connecting plate 201 and the seat board 1 is firm.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An office chair with a rocking backrest, characterized in that: It comprises a seat board (1) and a back board (3), wherein the seat board (1) and the back board (3) are connected via a connecting component (2); The connection assembly (2) comprises an angle-adjusting connection plate (201), the angle-adjusting connection plate (201) comprises a first connection block (2011) and a second connection block (2012), the angle between the first connection block (2011) and the second connection block (2012) being an obtuse angle; the first connection block (2011) is connected to the seat plate (1), and the second connection block (2012) is rotatably connected to the back plate (3).

2. The office chair with a rocking backrest according to claim 1, characterized in that: The angle adjustment connecting plate (201) is connected to the connecting rotating component (202), and the connecting rotating component (202) is connected to the supporting plate (3).

3. The office chair with a rocking backrest according to claim 2, characterized in that: The back plate (3) comprises a back plate (303), the lower end of the back plate (303) is connected to the driving connection plate (301), and rotating connection guard plates (302) are arranged on both sides of the back plate (303).

4. The office chair with a rocking backrest according to claim 3, characterized in that: The lower part of the seat plate (1) is connected to a telescopic member (4).

5. The office chair with a rocking backrest according to claim 4, characterized in that: The telescopic member (4) comprises a telescopic cylinder (401), one end of the telescopic cylinder (401) is rotatably connected to a second connection seat (403), the output end of the telescopic cylinder (401) is connected to a fisheye joint (4021), the fisheye joint (4021) is rotatably connected to the second connection seat (403), the second connection seat (403) is connected to the bottom of the seat plate (1), and the second connection seat (403) is connected to the driving connection plate (301).

6. The office chair with a rocking backrest according to any one of claims 3 to 5, characterized in that: When the back plate (303) is in contact with the lower side of the second connecting block (2012), the angle between the seat plate (1) and the back plate (3) is at its maximum.

7. The office chair with a rocking backrest according to any one of claims 1 to 5, characterized in that: The angle adjustment connecting plate (201) further comprises a seat cushion connecting block (2013), and the seat cushion connecting block (2013) is connected to the side of the second connecting block (2012).

8. The office chair with a rocking backrest according to claim 7, characterized in that: Armrest bars (101) are arranged on both sides of the seat plate (1), a cushion connection block (2013) is connected to the upper surface of the seat plate (1), and a second connection block (2012) is connected to the armrest bar (101).

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