Internal gearing type office chair angle adjuster

Abstract

The utility model provides an inner gearing type office chair angle adjuster which comprises a first shell, a rotating cavity is formed in the first shell, a first open hole is formed in the axis of the first shell, a rotating shaft is rotationally connected in the first open hole, the rotating shaft is fixedly connected with a driving assembly and a sun gear, and a fluted disc is fixedly connected to the outer circle face of the rotating cavity. The fluted disc is meshed with a planet wheel, the planet wheel is meshed with the sun wheel, two first sliding grooves are formed in the first shell, sliding rods are slidably connected into the first sliding grooves and rotationally connected with the planet wheel, and one end of the rotating shaft is fixedly connected with a reset assembly. According to the scheme, a second sliding block is rotated to drive a rotating shaft, and the rotating shaft rotates to drive a sun gear, so that the sun gear drives a planet gear to rotate, the planet gear drives a sliding rod to slide along a first sliding groove, and the sliding rod drives a seat backrest to rotate by driving a second shell to rotate; therefore, the purpose of improving the angle adjustment stability of the office chair is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of angle adjusters, in particular to an internal meshing type office chair angle adjuster. Background Art

[0002] Currently, the seat angle adjuster has poor stability during the adjustment process, so the adjustment process is unreliable and the user experience is poor.

[0003] For example, a Chinese patent discloses a "angle adjuster" (patent number: CN102512013A), which includes a diaphragm spring between the front end face of the locking tooth plate and the inner end face of the fixed seat, an unlocking handle is installed on the rotating shaft extending out of the fixed seat, and a boss is provided in the inner hole of the unlocking handle, and the boss is stuck in the rotating groove on the left side of the rotating shaft; when locked, the locking tooth plate is meshed with the inner teeth of the inner gear ring. The locking tooth plate and the rotating shaft and the fixed seat and the rotating shaft are connected by bosses and grooves, wherein a groove is provided on the outer circle of the rotating shaft, and bosses are provided in the inner holes of the locking tooth plate and the inner holes of the fixed seat. The above patent has the advantages of being able to lock at any angle and having a large locking torque.

[0004] However, during the above seat angle adjustment process, the stability during adjustment is relatively poor, and therefore a recliner with better stability is required. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies of the prior art, the utility model provides an internal meshing office chair angle adjuster, which solves the problems raised in the above background technology.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: an internally meshing office chair angle adjuster, characterized in that: it includes a first shell, a rotating cavity is opened in the first shell, a first opening is opened at the axis center of the first shell, a rotating shaft is rotatably connected in the first opening, the rotating shaft is fixedly connected to a driving assembly and a sun gear, a toothed plate is fixedly connected to the outer circular surface of the rotating cavity, the toothed plate is meshed with a planetary gear, the planetary gear is meshed with the sun gear, two first sliding grooves are opened on the first shell, a sliding rod is slidably connected in the first sliding groove, the sliding rod is rotatably connected to the planetary gear, and one end of the rotating shaft is fixedly connected to a reset assembly.

[0009] Preferably, the driving assembly includes a first swing arm, a first slider and a second slider, the first swing arm is fixedly connected to the rotating shaft, a third sliding groove is defined in the first swing arm, the first slider is fixedly connected to the second slider, the first slider and the second slider are both slidingly connected to the third sliding groove, a compression spring is fixedly arranged in the third sliding groove, one end of the compression spring is fixedly connected to the first slider, and the other end of the compression spring is fixedly connected to a side wall of the third sliding groove.

[0010] Preferably, a clamping terminal is provided at one end of the first sliding block close to the toothed disk, the clamping terminal is matched with the gear teeth of the toothed disk, a second sliding groove is provided on the outer circumferential surface of the first housing, and the second sliding block is slidably connected to the second sliding groove.

[0011] Preferably, the length of the second sliding block is greater than that of the first sliding block, and the width of the second sliding groove is equal to the width of the second sliding block.

[0012] Preferably, the sum of the inner diameter of the toothed disc and the outer diameter of the sun gear is equal to twice the diameter of the first sliding groove.

[0013] Preferably, the reset assembly includes a second shell and a torsion spring, a receiving cavity is provided on a side of the second shell close to the first shell, one end of the torsion spring is fixedly connected to the rotating shaft, the other end of the torsion spring is fixedly connected to the receiving cavity, and two second openings are provided on the second shell, and the second openings are rotatably connected to the sliding rod.

[0014] (III) Beneficial effects

[0015] The utility model provides an internal meshing office chair angle adjuster, which has the following beneficial effects:

[0016] 1. This solution drives the rotating shaft by rotating the second slider, and the rotating shaft drives the sun gear by rotating, so that the sun gear drives the planetary gear to rotate, and the planetary gear drives the sliding rod to slide along the first sliding groove, so that the sliding rod drives the seat back to rotate by driving the second shell to rotate, thereby achieving the purpose of improving the stability of the office chair angle adjustment.

[0017] 2. This solution drives the first slider to slide relative to the third sliding groove by pushing the second slider, so that the first slider drives the clamping end to separate and unlock from the toothed disc, thereby achieving the purpose of improving the angle adjustment efficiency of the office chair. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0021] In the figure: 11, first shell; 12, rotating chamber; 13, first opening; 14, rotating shaft; 15, first sliding groove; 16, second sliding groove; 17, gear plate; 18, second shell; 19, second opening; 20, torsion spring; 21, sliding rod; 22, planetary gear; 23, first swing arm; 24, third sliding groove; 25, compression spring; 26, first slider; 27, clamping end; 28, second slider; 29, sun gear. DETAILED DESCRIPTION

[0022] The utility model provides an internal meshing type office chair angle adjuster, such as Figure 1-3 As shown, it includes a first shell 11, a rotating chamber 12, a first opening 13, a rotating shaft 14, a first sliding groove 15, a second sliding groove 16, a gear plate 17, a second shell 18, a second opening 19, a torsion spring 20, a sliding rod 21, a planetary gear 22, a first swing arm 23, a third sliding groove 24, a compression spring 25, a first slider 26, a clamping end 27, a second slider 28, and a sun gear 29.

[0023] like Figure 1-3 As shown, the first shell 11 is fixedly connected to the seat base, a rotating cavity 12 is opened in the first shell 11, a first opening 13 is opened at the axis of the first shell 11, a rotating shaft 14 is rotatably connected in the first opening 13, the rotating shaft 14 is fixedly connected to the driving assembly and the sun gear 29, a toothed disc 17 is fixedly connected to the outer circumferential surface of the rotating cavity 12, the toothed disc 17 is meshed with a planetary gear 22, the planetary gear 22 is meshed with the sun gear 29, two first sliding grooves 15 are opened on the first shell 11, a sliding rod 21 is slidably connected in the first sliding groove 15, the sliding rod 21 is rotatably connected to the planetary gear 22, and one end of the rotating shaft 14 is fixedly connected to a reset assembly.

[0024] It is worth noting that the thickness of the planetary gear 22 is equal to the thickness of the sun gear 29 , and the thickness of the gear plate 17 is twice the thickness of the planetary gear 22 .

[0025] The driving assembly includes a first swing arm 23, a first slider 26 and a second slider 28. The first swing arm 23 is fixedly connected to the rotating shaft 14. A third sliding groove 24 is defined in the first swing arm 23. The first slider 26 is fixedly connected to the second slider 28. Both the first slider 26 and the second slider 28 are slidingly connected to the third sliding groove 24. A compression spring 25 is fixedly provided in the third sliding groove 24. One end of the compression spring 25 is fixedly connected to the first slider 26, and the other end of the compression spring 25 is fixedly connected to a side wall of the third sliding groove 24.

[0026] A clamping end 27 is provided at one end of the first slider 26 close to the toothed disc 17, and the clamping end 27 is adapted to the gear teeth of the toothed disc 17. A second sliding groove 16 is provided on the outer circumferential surface of the first housing 11, and a second slider 28 is slidably connected to the second sliding groove 16. The length of the second slider 28 is greater than the length of the first slider 26, and the width of the second sliding groove 16 is equal to the width of the second slider 28. The sum of the inner diameter of the toothed disc 17 and the outer diameter of the sun gear 29 is equal to twice the diameter of the first sliding groove 15.

[0027] The reset assembly includes a second shell 18 and a torsion spring 20. The second shell 18 is fixedly connected to the seat back. A receiving cavity is provided on the side of the second shell 18 close to the first shell 11. One end of the torsion spring 20 is fixedly connected to the rotating shaft 14, and the other end of the torsion spring 20 is fixedly connected to the receiving cavity. Two second openings 19 are provided on the second shell 18, and the second openings 19 are rotatably connected to the sliding rod 21.

[0028] When the seat angle is adjusted in this scheme, first, the second slider 28 is pushed toward the direction of the first swing arm 23, and the second slider 28 drives the first slider 26 and the third sliding groove 24 to slide relative to each other. The first slider 26 compresses the compression spring 25 and separates the clamping end 27 from the toothed disc 17.

[0029] Then, the second slider 28 is pushed along the extension direction of the second sliding groove 16, and the second slider 28 drives the first swing arm 23 to rotate around the rotating shaft 14 as the axis, and the rotating shaft 14 drives the sun gear 29 to rotate around the rotating shaft 14 as the axis, and the sun gear 29 causes the planetary gear 22 to rotate around the sliding rod 21 as the axis through engagement. Since the planetary gear 22 is engaged with the gear plate 17, the planetary gear 22 drives the sliding rod 21 to slide along the first sliding groove 15.

[0030] Finally, the sliding rod 21 drives the second shell 18 to rotate relative to the first shell 11 through the second opening 19, so that the second shell 18 drives the seat back to rotate, and the second slider 28 is released. The elastic potential energy of the compression spring 25 is released, and the compression spring 25 pushes the first slider 26 to slide away from the first swing arm 23. The first slider 26 drives the clamping end 27 to engage with the toothed disc 17, thereby completing the locking.

[0031] 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. An internal meshing office chair recliner, characterized in that: The invention comprises a first shell (11), wherein a rotating chamber (12) is provided in the first shell (11), wherein a first opening (13) is provided at the axis center of the first shell (11), wherein a rotating shaft (14) is rotatably connected in the first opening (13), wherein the rotating shaft (14) is fixedly connected to a driving assembly and a sun gear (29), wherein a toothed disc (17) is fixedly connected to the outer circumferential surface of the rotating chamber (12), wherein the toothed disc (17) is meshed with a planetary gear (22), wherein the planetary gear (22) is meshed with the sun gear (29), wherein two first sliding grooves (15) are provided on the first shell (11), wherein a sliding rod (21) is slidably connected in the first sliding groove (15), wherein the sliding rod (21) is rotatably connected to the planetary gear (22), and wherein one end of the rotating shaft (14) is fixedly connected to a reset assembly.

2. The internally meshing office chair recliner according to claim 1, characterized in that: The driving assembly comprises a first swing arm (23), a first slider (26) and a second slider (28), wherein the first swing arm (23) is fixedly connected to the rotating shaft (14), a third sliding groove (24) is provided in the first swing arm (23), the first slider (26) and the second slider (28) are fixedly connected, the first slider (26) and the second slider (28) are both slidably connected to the third sliding groove (24), a compression spring (25) is fixedly arranged in the third sliding groove (24), one end of the compression spring (25) is fixedly connected to the first slider (26), and the other end of the compression spring (25) is fixedly connected to a side wall of the third sliding groove (24).

3. The internally meshing office chair recliner according to claim 2, characterized in that: A clamping terminal (27) is provided at one end of the first sliding block (26) close to the toothed disk (17), and the clamping terminal (27) is adapted to the gear teeth of the toothed disk (17). A second sliding groove (16) is provided on the outer circumferential surface of the first housing (11), and the second sliding block (28) is slidably connected to the second sliding groove (16).

4. The internally meshing office chair recliner according to claim 3, characterized in that: The length of the second sliding block (28) is greater than the length of the first sliding block (26), and the width of the second sliding groove (16) is equal to the width of the second sliding block (28).

5. The internally meshing office chair recliner according to claim 1, characterized in that: The sum of the inner diameter of the toothed disc (17) and the outer diameter of the sun gear (29) is equal to twice the diameter of the first sliding groove (15).

6. The internally meshing office chair recliner according to claim 1, characterized in that: The reset assembly comprises a second housing (18) and a torsion spring (20); a receiving cavity is provided on a side of the second housing (18) close to the first housing (11); one end of the torsion spring (20) is fixedly connected to the rotating shaft (14); the other end of the torsion spring (20) is fixedly connected to the receiving cavity; two second openings (19) are provided on the second housing (18); the second openings (19) are rotatably connected to the sliding rod (21).

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