Gear damper

Abstract

The utility model relates to the technical field of damping devices, in particular to a gear damper. The gear damper comprises a shell and a rotating body, a cylinder is arranged in the center of the shell, the rotating body is clamped on the cylinder, a damping cavity is formed between the outer wall of the rotating body and the inner wall of the shell, damping oil is injected into the damping cavity, a rotating shaft is arranged in the center of the top of the rotating body and penetrates through a cover plate, the cover plate is arranged on the shell in a sealed mode, and the rotating shaft is sleeved with a gear. A brake body is arranged on the upper portion of the rotating shaft, a rotating body is arranged on the lower portion of the rotating body, the rotating body is annular and provided with a hollowed-out groove, the hollowed-out groove is fan-shaped, an inner ring is arranged on the inner side of the gear, and an insertion hole is formed in the middle of the inner ring. The gear has the advantages that the middle of the gear is recessed downwards, the inner ring is lower than the periphery and matched with a rotating shaft, the lengths of the two sides are shortened, materials are saved, the gear is quite convenient to use, the oil storage groove is formed in the bottom face of the shell and communicated with the hollowed-out groove, even resistance is obtained due to the fact that flowing of damping oil is blocked, and the damping effect is lasting.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbing devices, in particular to a gear damper. Background Art

[0002] Gear dampers are widely used in various car glasses cases, ashtrays, double-opening armrests, hidden handles or boxes, roller blinds and other products. They have the functions of shockproof and slowing down the opening and closing speed. The damper usually includes a housing, a shaft and a sealing component. The shaft is rotatably installed in the housing. Usually, the gear surface is flush, so the shaft is relatively long, which increases the cost. After long-term use, the damping oil in the gap is constantly squeezed out of the gap as the shaft rotates, resulting in uneven distribution of the damping oil in the gap, affecting the stability of the shaft, and thus affecting the overall shockproof and opening and closing speed slowing effect of the gear damper. Summary of the invention

[0003] In order to solve the technical problems of increased cost due to flushing of the gear surface and uneven distribution of silicone oil after long-term use, the utility model provides a gear damper.

[0004] The technical solution of the utility model is as follows:

[0005] The gear damper comprises an outer shell and a rotating body. A cylinder is provided at the center of the outer shell, and the rotating body is clamped on the cylinder. A damping chamber is formed between the outer wall of the rotating body and the inner wall of the outer shell. Damping oil is injected into the damping chamber. A rotating shaft is provided at the top center of the rotating body. The rotating shaft passes through a cover plate. The cover plate is sealed on the outer shell. A gear is sleeved on the rotating shaft. The upper part of the rotating shaft is a brake body, and the lower part of the rotating body is a rotating body. The rotating body is in a circular ring shape, and a hollow groove is provided on the rotating body. The hollow groove is fan-shaped. An inner ring is provided on the inner side of the gear, and a jack is provided in the middle of the inner ring.

[0006] The inner wall of the shell protrudes upward to form a convex ring.

[0007] The inner wall of the outer side of the cover plate is concavely provided with a clamping groove for fixing the convex ring, the inner wall of the inner side of the cover plate is provided with a sealing step, the sealing step is provided with a sealing ring, and the sealing ring is sleeved on the rotating body.

[0008] The brake body is in a cubic shape, the top outer wall of the brake body is provided with an inclined surface, the outer wall of the rotating body is recessed with a notch, there are three hollow grooves, which are evenly distributed, and an oil storage groove is provided below the hollow groove, which is recessed coaxially with the cylinder.

[0009] Buckles are arranged on both sides of the shell.

[0010] The inner ring height is lower than the outer side height of the gear.

[0011] The technical solution of the utility model has a novel structure and an ingenious and simple design. The brake body is cubical, easy to process, and matched with the gear socket. The middle of the gear is recessed downward, and the inner ring is lower than the surrounding, which is matched with the rotating shaft. The lengths of both sides are shortened, saving materials and being very convenient. An oil storage groove is provided on the bottom of the shell body, which is connected with the hollow groove. Since the flow of damping oil is blocked, uniform resistance is obtained, and the damping effect is lasting and the service life is long; the oil storage groove makes the central groove and cylinder of the swivel also produce a damping effect with the damping oil, further making the resistance more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 , 3 It is a structural schematic diagram of a cross-sectional view of the utility model;

[0014] Figure 4 It is a structural schematic diagram of the housing of the utility model;

[0015] Figure 5 , 6 It is a structural schematic diagram of the cover plate of the utility model;

[0016] Figure 7 It is a structural schematic diagram of the rotating body of the utility model;

[0017] Figure 8 It is a structural schematic diagram of the rotary gear of the utility model. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Example

[0019] like Figure 1 , 2 The gear damper shown in , 3, 4, 5, 6, 7, and 8 comprises a shell 1 and a rotating body 7. A cylinder 2 is provided at the center of the shell 1, and the rotating body 7 is clamped on the cylinder 2. A damping cavity is formed between the outer wall of the rotating body 7 and the inner wall of the shell 1. The damping cavity is injected with damping liquid. A rotating shaft 9 is provided at the top center of the rotating body 7. The rotating shaft 9 passes through a cover plate 4. The cover plate 4 is sealed on the shell 1. A gear 5 is sleeved on the rotating shaft 9. The upper part of the rotating shaft 9 is a brake body 11, and the lower part of the rotating body 7 is a rotating body. The rotating body is in a circular ring shape, and a hollow groove 10 is provided on the rotating body. The hollow groove 10 is fan-shaped. An inner ring 16 is provided on the inner side of the gear 5, and a plug hole 17 is provided in the middle of the inner ring 16.

[0020] The inner wall of the housing 1 protrudes upward to form a protruding ring 14 .

[0021] The outer inner wall of the cover plate 4 is recessed with a groove 13 for fixing the convex ring 14 , and the inner inner wall of the cover plate 4 is provided with a sealing step 3 , and the sealing step is provided with a sealing ring 8 , which is sleeved on the rotating body 7 .

[0022] The brake body 11 is in a cubic shape, the top outer wall of the brake body 11 is provided with an inclined surface, the outer wall of the rotating body is recessed with a notch 12, the number of hollow grooves 10 is three, and they are evenly distributed. An oil storage groove 15 is provided below the hollow groove 10, and the oil storage groove 15 is recessed coaxially with the cylinder 2.

[0023] Buckles 6 are provided on both sides of the housing 1 .

[0024] The height of the inner ring 16 is lower than the height of the outer side of the gear 5 .

[0025] When in use, the inner ring 16 is connected to the inner wall of the gear 5 through a connecting ring, an inner ring body is arranged in the middle of the inner ring 16, and the height of the inner ring body is lower than that of the inner ring 16. A plug hole 17 is arranged in the middle of the inner ring 16, and the plug hole 17 is square and is sleeved on the brake body 11. The brake body 11 does not extend from the rotating shaft 9 and is blocked by the top edge of the rotating shaft 9. The gear recessed design saves materials and shortens the length of the brake body. The cover plate 4 seals the damping oil in the damping cavity through a welding process. The rotating shaft 9 rotates to drive the gear 5 and the matching part to move. The buckle 6 fixes the damping oil to the matching part to ensure that it does not move. There is an oil storage groove 15 on the bottom surface of the shell 1, so that the damping oil is less likely to leak out, and it is connected with the hollow groove 10. Due to the obstruction of the damping oil flow in the hollow groove 10, uniform resistance is obtained, and the damping effect is long-lasting and the service life is long; the oil storage groove 15 makes the central groove of the swivel and the cylinder 2 also produce a damping effect with the damping oil, further making the resistance more uniform and the use more durable.

[0026] It should be understood that the above description is only a preferred embodiment of the present invention and is not sufficient to limit the technical solution of the present invention. For ordinary technicians in this field, within the spirit and principles of the present invention, additions, substitutions, changes or improvements can be made according to the above description, and all these additions, substitutions, changes or improved technical solutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A gear damper, comprising a housing (1) and a rotating body (7), characterized in that: A cylinder (2) is provided at the center of the housing (1), a rotating body (7) is clamped on the cylinder (2), a damping cavity is formed between the outer wall of the rotating body (7) and the inner wall of the housing (1), and damping oil is injected into the damping cavity. A rotating shaft (9) is provided at the center of the top of the rotating body (7), the rotating shaft (9) passes through the cover plate (4), and the cover plate (4) is sealed and arranged on the housing (1). A gear (5) is sleeved on the rotating shaft (9), the upper part of the rotating shaft (9) is a brake body (11), the lower part of the rotating body (7) is a rotating body, the rotating body is in a ring shape, and a hollow groove (10) is provided on the rotating body. An inner ring (16) is provided on the inner side of the gear (5), and a plug hole (17) is provided in the middle of the inner ring (16). The inner wall of the outer side of the cover plate (4) is concave. A clamping groove (13) is provided for fixing the convex ring (14), a sealing step (3) is provided on the inner wall of the inner side of the cover plate (4), a sealing ring (8) is provided on the sealing step (3), and the sealing ring (8) is sleeved on the rotating body (7), the braking body (11) is a cubic shape, the outer wall of the top of the braking body (11) is provided with an inclined surface, the outer wall of the rotating body is recessed with a notch (12), the number of hollow grooves (10) is three, and they are evenly distributed, an oil storage groove (15) is provided below the hollow groove (10), the oil storage groove (15) is recessed coaxially with the cylinder (2), the insertion hole (17) is square, the height of the inner ring (16) is lower than the height of the outer side of the gear (5), and the hollow groove (10) is fan-shaped.

2. The gear damper according to claim 1, characterized in that: The inner wall of the housing (1) protrudes upwards to form a protruding ring (14).

3. The gear damper according to claim 1, characterized in that: Buckles (6) are provided on both sides of the housing (1).

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