Left-right swinging mechanism for chair back

Abstract

The utility model relates to the field of chair backs, and discloses a chair back left-right swinging mechanism which comprises a fixing frame, the fixing frame is arranged below a chair back body, a fixing plate is arranged above the fixing frame, two positioning rods are fixed on the bottom face of the fixing plate, positioning plates are fixed on the two sides of the fixing frame respectively, and the positioning rods are fixed on the two sides of the fixing frame respectively. A sliding hole is formed in the top surface of the positioning plate, a blocking disc is fixed to the bottom end of the positioning rod, a backward-leaning compression spring surrounds the surface of the positioning rod, a positioning pipe is fixed to the bottom surface of the chair back body, and two mounting plates are fixed to the inner bottom surface of the fixing frame. According to the chair back, a user can apply acting force to the chair back body through the backward leaning back, the chair back body can be pushed backwards, the fixing frame and the fixing plate can be driven to change the included angle between the fixing frame and the fixing plate with the hinge as the circle center, and when the user uses the chair, the chair back body can shake leftwards and rightwards and lean backwards; and the comfort of the seat in use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chair backs, in particular to a left-right swinging mechanism for chair backs. Background Art

[0002] Since the advent of chairs and stools during the Northern and Southern Dynasties, there have been more and more styles of chairs and stools with the development of the times. Common ones include ergonomic chairs, office chairs, reclining chairs, rocking chairs, and children's chairs. Among them, ergonomic chairs are designed in accordance with human body engineering and have strong applicability and great comfort. Depending on the type of chairs and stools, the design of the backrest is also varied.

[0003] According to the Chinese patent with announcement number: CN210643327U, a chair with a backrest that can swing left and right includes a chair base and a chair back, the chair base is provided with a mounting groove, the bottom of the chair back is provided with a holder protruding from the bottom surface of the chair back, the holder cooperates with the mounting groove, the height of the holder is higher than the height of the mounting groove, and a gap is left between the chair back and the chair base, the mounting groove is provided with two symmetrical lugs, the holder is inserted between the two lugs, a through hole is provided in the middle of the holder, a bolt hole is provided in the middle of the lug, and the holder is restricted between the two lugs by a through bolt with threads at both ends.

[0004] In the above scheme, springs are installed at both ends of the bottom of the chair back to achieve left and right swinging, which still has the following disadvantages: when the chair back swings left and right, the bottom of the chair back cooperates with the seat through the installation groove, so that the chair back cannot lean back, and the comfort is poor. Utility Model Content

[0005] The utility model aims to provide a chair back swing mechanism to solve the problem that when the chair back swings left and right, the bottom of the chair back cooperates with the mounting groove and the seat, so that the chair back cannot lean back and the comfort is poor.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical scheme: a left-right swing mechanism of a chair back, comprising a fixing frame, the fixing frame is arranged below the chair back body, a fixing plate is arranged above the fixing frame, the fixing frame and the fixing plate are rotatably arranged by hinges, two positioning rods are fixed to the bottom surface of the fixing plate, positioning plates are respectively fixed to the two sides of the fixing frame, a sliding hole is opened on the top surface of the positioning plate, the sliding hole and the positioning rod are slidably inserted, a blocking plate is fixed to the bottom end of the positioning rod, a reclining compression spring is surrounded on the surface of the positioning rod, one end of the reclining compression spring is fixed to the top surface of the blocking plate, a positioning tube is fixed to the bottom surface of the chair back body, two mounting plates are fixed to the inner bottom surface of the fixing frame, a mounting column is fixed between the two mounting plates, and the mounting column and the positioning tube are rotatably inserted.

[0007] Preferably, two sliding openings are provided on the inner bottom surface of the fixed frame, a sliding plate is slidably arranged inside the sliding opening, two rocking bars are fixed to the bottom surface of the chair back body, the rocking bars are slidably inserted into the sliding plate, a rocking compression spring is surrounded by the surface of the rocking bars, one end of the rocking compression spring is fixed to the top surface of the sliding plate, and the other end of the rocking compression spring is fixed to the bottom surface of the chair back body.

[0008] Preferably, a fixed folding plate is fixed to one side of the chair back body, a headrest is flipped onto one side of the fixed folding plate, a clamping plate is fixed to one side of the headrest, a through hole is opened on one side of the fixed folding plate, a fixed pin is slidably inserted into the clamping plate, one end of the fixed pin passes through the clamping plate and is slidably inserted into the through hole, two fixing columns are fixed to the surface of the fixed pin, and a quick-release wrench is rotatably provided on the surface of the fixing column.

[0009] Preferably, two installation grooves are provided on one side of the chair back body, and heating pads are fixed inside the installation grooves.

[0010] Preferably, a plurality of fixing holes are provided on the top surface of the fixing plate, and fixing bolts are rotatably arranged inside the fixing holes.

[0011] Preferably, two protection strips are fixed to one side of the chair back body.

[0012] Compared with the prior art, a chair back left-right swing mechanism adopting the above technical solution has the following features:

[0013] Beneficial effects:

[0014] 1. When the user wants to recline and rest on the chair, the user will use the reclining back to exert force on the chair back body, which will push the chair back body backward. In the process of being pushed, the chair back body will drive the fixed frame and the fixed plate to change the angle between each other with the hinge as the center of the circle, and in the process, drive the positioning rod to slide inside the sliding hole and stretch the reclining compression spring. When the user wants to lean sideways to get something or communicate with colleagues, the user's back will fit with the surface of the chair back body, and the positioning tube will rotate on the surface of the mounting column, so that the chair can rock left and right. When the user needs to sit upright to work, the stretched reclining compression spring will pull the fixing frame and the fixing plate to fit together, so that the chair back body can be quickly reset. When the user uses the chair, the chair back body can not only rock left and right but also lean back, which increases the comfort of the chair when in use.

[0015] Second, when the ambient temperature is low, the user can activate the heating pad to increase the temperature of the user's back. In addition, when the user leans against the backrest body and shakes left and right, the rocking bar will slide up and down inside the sliding plate, and the rocking compression spring will be squeezed or stretched during the sliding process, so that the accumulated restoring elastic force can be released when the user returns to sitting upright, thereby assisting the user in restoring the position of the backrest body, which increases the convenience during use.

[0016] 3. When the user sits on the seat, the user can adjust the position of the headrest according to the position of the back of his neck. When adjusting, the user will first loosen the quick-release wrench, and then adjust the angle of the headrest with the fixed pin as the center, and lock the quick-release wrench after the adjustment is completed to fix the headrest at the current angle, so as to be suitable for users of different heights and body shapes, thereby increasing the applicability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of an embodiment.

[0018] Figure 2 It is an exploded perspective schematic diagram of an embodiment.

[0019] Figure 3 It is an exploded schematic diagram of the fixing frame and the fixing plate in the embodiment.

[0020] Figure 4 It is a schematic diagram of the explosion of the fixed folding plate and the clamping plate in the embodiment.

[0021] In the figure: 1. Chair back body; 2. Fixed frame; 3. Fixed plate; 4. Positioning rod; 5. Positioning plate; 6. Sliding hole; 7. Reclining compression spring; 8. Blocking plate; 9. Positioning tube; 10. Mounting plate; 11. Mounting column; 12. Sliding opening; 13. Rocking rod; 14. Sliding plate; 15. Rocking compression spring; 16. Protective strip; 17. Fixed folding plate; 18. Headrest; 19. Clamping plate; 20. Penetration hole; 21. Fixed pin; 22. Fixed column; 23. Quick release wrench; 24. Mounting slot; 25. Heating pad; 26. Fixed hole; 27. Fixed bolt. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-Figure 3As shown, a left-right swing mechanism for a chair back comprises a fixed frame 2, wherein the fixed frame 2 is arranged below a chair back body 1, a fixed plate 3 is arranged above the fixed frame 2, the fixed frame 2 and the fixed plate 3 are rotatably arranged by hinges, two positioning rods 4 are fixed to the bottom surface of the fixed plate 3, positioning plates 5 are fixed to both sides of the fixed frame 2, a sliding hole 6 is opened on the top surface of the positioning plate 5, the sliding hole 6 and the positioning rod 4 are slidably inserted, a blocking plate 8 is fixed to the bottom end of the positioning rod 4, a reclining compression spring 7 is surrounded on the surface of the positioning rod 4, one end of the reclining compression spring 7 is fixed to the top surface of the blocking plate 8, a positioning tube 9 is fixed to the bottom surface of the chair back body 1, two mounting plates 10 are fixed to the inner bottom surface of the fixed frame 2, a mounting column 11 is fixed between the two mounting plates 10, and the mounting column 11 and the positioning tube 9 are rotatably inserted.

[0024] During use, when the user sits on the chair and wants to lean back to rest, the user will use the leaning back back to apply force to the chair back body 1, which will push the chair back body 1 backward. In the process of being pushed, the chair back body 1 will drive the fixing frame 2 and the fixing plate 3 to change the angle between each other with the hinge as the center, and in the process drive the positioning rod 4 to slide inside the sliding hole 6 and stretch the reclining compression spring 7. When the user wants to lean sideways to get something or communicate with colleagues, the user's back will fit with the surface of the chair back body 1, and the positioning tube 9 will rotate on the surface of the mounting column 11, so that the chair can rock left and right. When the user needs to sit upright to work, the stretched reclining compression spring 7 will pull the fixing frame 2 and the fixing plate 3 to fit together, so that the chair back body 1 is quickly reset. When the user uses the chair, the chair back body 1 can not only rock left and right but also lean back, thereby increasing the comfort of the chair when in use.

[0025] like Figure 2 and Figure 3 As shown, the inner bottom surface of the fixed frame 2 is provided with two sliding openings 12, and the sliding openings 12 are slidably provided with a sliding plate 14 inside. Two rocking bars 13 are fixed to the bottom surface of the chair back body 1, and the rocking bars 13 and the sliding plates 14 are slidably inserted. The surface of the rocking bars 13 is surrounded by a rocking compression spring 15, and one end of the rocking compression spring 15 is fixed to the top surface of the sliding plate 14, and the other end of the rocking compression spring 15 is fixed to the bottom surface of the chair back body 1. Two mounting grooves 24 are provided on one side of the chair back body 1, and a heating pad 25 is fixed inside the mounting grooves 24. A plurality of fixing holes 26 are provided on the top surface of the fixed plate 3, and fixing bolts 27 are rotatably provided inside the fixing holes 26.

[0026] During use, the fixing bolt 27 will pass through the fixing hole 26 and then be screwed into the interior of the seat cushion, so that the fixing plate 3 can be fixed to the bottom surface of the seat cushion. When the external ambient temperature is low, the user can start the heating pad 25 to increase the temperature of the user's back. In addition, when the user shakes left and right on the seat with his back against the seat back body 1, the rocking bar 13 will be driven to slide up and down inside the sliding plate 14, and the rocking compression spring 15 will be squeezed or stretched during the sliding process, so that the accumulated restoring elastic force can be released when the user returns to sitting upright, thereby assisting the user in restoring the position of the seat back body 1, thereby increasing the convenience during use.

[0027] like Figure 1 and Figure 4 As shown, a fixed folding plate 17 is fixed to one side of the chair back body 1, and a headrest 18 is flipped on one side of the fixed folding plate 17, and a clamping plate 19 is fixed to one side of the headrest 18. A through hole 20 is opened on one side of the fixed folding plate 17, and a fixed pin 21 is slidably inserted into the clamping plate 19. One end of the fixed pin 21 passes through the clamping plate 19 and is slidably inserted into the through hole 20. Two fixed columns 22 are fixed on the surface of the fixed pin 21, and a quick-release wrench 23 is rotatably provided on the surface of the fixed column 22. Two protective strips 16 are fixed to one side of the chair back body 1.

[0028] During use, when the user sits on the seat, the user can adjust the position of the headrest 18 according to the position of the back of his or her neck. When adjusting, the user will first loosen the quick-release wrench 23, and then adjust the angle of the headrest 18 with the fixed pin 21 as the center, and lock the quick-release wrench 23 after the adjustment is completed to fix the headrest 18 at the current angle, so as to be suitable for users of different heights and body shapes, thereby increasing the applicability during use.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chair back swing mechanism, comprising a fixed frame (2), characterized in that: The fixing frame (2) is arranged below the chair back body (1), and a fixing plate (3) is arranged above the fixing frame (2). The fixing frame (2) and the fixing plate (3) are rotatably arranged by hinges. Two positioning rods (4) are fixed to the bottom surface of the fixing plate (3), and positioning plates (5) are fixed to both sides of the fixing frame (2). A sliding hole (6) is opened on the top surface of the positioning plate (5), and the sliding hole (6) and the positioning rod (4) are slidably inserted. A blocking plate (8) is fixed to the bottom end of the positioning rod (4), and a reclining compression spring (7) surrounds the surface of the positioning rod (4). One end of the reclining compression spring (7) is fixed to the top surface of the blocking plate (8). A positioning tube (9) is fixed to the bottom surface of the chair back body (1), and two mounting plates (10) are fixed to the inner bottom surface of the fixing frame (2). A mounting column (11) is fixed between the two mounting plates (10), and the mounting column (11) and the positioning tube (9) are rotatably inserted.

2. A chair back left-right swinging mechanism according to claim 1, characterized in that: The inner bottom surface of the fixed frame (2) is provided with two sliding openings (12), and a sliding plate (14) is slidably arranged inside the sliding opening (12). Two rocking rods (13) are fixed to the bottom surface of the chair back body (1), and the rocking rods (13) and the sliding plates (14) are slidably inserted. The surface of the rocking rods (13) is surrounded by a rocking compression spring (15), and one end of the rocking compression spring (15) is fixed to the top surface of the sliding plate (14), and the other end of the rocking compression spring (15) is fixed to the bottom surface of the chair back body (1).

3. The chair back left-right swinging mechanism according to claim 1, characterized in that: A fixed folding plate (17) is fixed on one side of the chair back body (1), a headrest (18) is flipped on one side of the fixed folding plate (17), a clamping plate (19) is fixed on one side of the headrest (18), a through hole (20) is opened on one side of the fixed folding plate (17), a fixed pin (21) is slidably inserted into the clamping plate (19), one end of the fixed pin (21) passes through the clamping plate (19) and is slidably inserted into the through hole (20), two fixed columns (22) are fixed on the surface of the fixed pin (21), and a quick-release wrench (23) is rotatably arranged on the surface of the fixed column (22).

4. The chair back left-right swinging mechanism according to claim 1, characterized in that: Two installation grooves (24) are provided on one side of the chair back body (1), and a heating pad (25) is fixed inside the installation groove (24).

5. The chair back left-right swinging mechanism according to claim 1, characterized in that: A plurality of fixing holes (26) are provided on the top surface of the fixing plate (3), and fixing bolts (27) are rotatably arranged inside the fixing holes (26).

6. The chair back left-right swinging mechanism according to claim 1, characterized in that: Two protection strips (16) are fixed to one side of the chair back body (1).

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