Novel rotary damper

Abstract

The utility model relates to the technical field of automobile parts, in particular to a novel rotary damper. A novel rotary damper comprises a shell and a rotor, a check ring is inwards formed at the bottom of the shell, a damping cavity is formed between the inner wall of the shell and the check ring, an end cover is arranged on the upper portion of the rotor, an annular rotary core is arranged on the lower portion of the rotor, the rotary core is coaxially installed in the damping cavity, and damping liquid is injected into a gap between the damping cavity and the rotary core. A damping hole communicated with the inner cavity is transversely formed in the rotating core, a circle of clamping groove is formed in the inner wall of the upper portion of the shell, a protruding ring is arranged on the outer wall of the upper portion of the rotor and clamped in the clamping groove, and the inner side and the outer side of the bottom of the end cover are located on the same horizontal plane. The sealing structure has the advantages that the inner side and the outer side of the bottom of the end cover are located on the same horizontal plane, the concave ring and the bottom face of the sealing step are located on the same horizontal plane, machining is convenient, a gap between the damping cavity and the rotating core is sealed through the sealing ring a, and the sealing effect is improved through the clamping groove and the protruding ring.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a novel rotary damper. Background Art

[0002] The existing rotary damper used for the roof handle of the car or the like is generally installed on the rotating shaft of the handle. The general structure of this type of damper is composed of a shell with a cavity and a rotor arranged in the shell cavity, and the cavity is filled with damping fluid. There are various rotor structures of this type of damper, some of which are complicated in design, inconvenient to process and have poor damping effect after long-term use. Summary of the invention

[0003] In order to solve the above technical problems of complicated design and poor damping effect after long-term use, the utility model provides a novel rotary damper.

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

[0005] A novel rotary damper comprises a shell and a rotor, wherein a retaining ring is formed inwardly at the bottom of the shell, a damping cavity is arranged between the inner wall of the shell and the retaining ring, an end cover is arranged at the upper part of the rotor, and a ring-shaped rotating core is arranged at the lower part of the rotor. The rotating core is coaxially installed in the damping cavity, and a damping fluid is injected into the gap between the damping cavity and the rotating core. A damping hole communicating with the inner cavity is arranged transversely on the rotating core, a circle of grooves is arranged on the inner wall of the upper part of the shell, a convex ring is arranged on the outer wall of the upper part of the rotor, the convex ring is clamped on the groove, and the inner and outer sides of the bottom of the end cover are on the same horizontal plane.

[0006] A sealing step is provided at the opening of the shell, and the upper outer wall of the rotor is clamped with the sealing step.

[0007] The number of the damping holes is two, which are arranged opposite to each other.

[0008] The outer wall of the upper part of the rotor is sleeved with a sealing ring a, which is sleeved on the concave ring of the rotating core. The concave ring is below the end cover, and the concave ring and the bottom surface of the sealing step are on the same horizontal plane.

[0009] The outer wall at the top of the retaining ring is provided with a step, a sealing ring b is provided at the step, and two circles of concave grooves a are provided at the lower part of the inner wall of the retaining ring.

[0010] The outer wall of the bottom of the rotating core is provided with an inclined surface.

[0011] The bottom of the shell is provided with a recessed groove b.

[0012] The technical solution of the utility model has a novel structure, ingenious and simple design, the inner and outer sides of the bottom of the end cover are on the same horizontal plane, the recessed ring and the bottom surface of the sealing step are on the same horizontal plane, and the processing is convenient. First, the gap between the damping cavity and the rotating core is sealed by the sealing ring a, and second, the sealing effect is improved by the groove and the convex ring. The two horizontal damping holes obtain uniform resistance due to the obstruction of the flow of the damping fluid, and the damping effect is lasting and the service life is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 , 2 5 is a schematic diagram of the structure of the utility model;

[0014] Figure 3 It is a cross-sectional view of the utility model;

[0015] Figure 4 It is a structural schematic diagram of part of the utility model;

[0016] Figure 6 , 8 It is a schematic diagram of the structure of the rotor of the utility model;

[0017] Figure 7 It is a structural schematic diagram of the shell 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 novel rotary damper shown in Figures 3, 4, 5, 6, 7 and 8 comprises a shell 6 and a rotor 1. A retaining ring 15 is formed inwardly at the bottom of the shell 6. A damping chamber 3 is provided between the inner wall of the shell 6 and the retaining ring 15. An end cover 7 is provided on the upper part of the rotor 1. The lower part of the rotor 1 is a ring-shaped rotating core 4. The rotating core 4 is coaxially installed in the damping chamber 3. The gap between the damping chamber 3 and the rotating core 4 is filled with damping fluid. The rotating core 4 is laterally provided with a damping hole 10 connected with the inner chamber.

[0020] A sealing step 2 is provided at the opening of the housing 6 , and the upper outer wall of the rotor 1 is engaged with the sealing step 2 .

[0021] The number of the damping holes 10 is two, which are arranged opposite to each other.

[0022] The upper outer wall of the rotor 1 is sleeved with a sealing ring a8, which is sleeved on the concave ring of the rotating core 4.

[0023] The outer wall of the top of the retaining ring 15 is provided with a step, and a sealing ring b is provided at the step. The lower part of the inner wall of the retaining ring 15 is provided with two circles of concave grooves a12.

[0024] The outer wall at the bottom of the rotating core 4 is provided with an inclined surface 9 to leave space for the damping fluid.

[0025] The bottom of the housing 6 is provided with a recessed groove b11.

[0026] The upper inner wall of the housing 6 is provided with a circle of clamping grooves 16 , and the upper outer wall of the rotor is provided with a convex ring 14 , which is clamped on the clamping grooves 16 .

[0027] When in use, the housing 6 is cylindrical, and a shaft hole 13 is opened in the center to adapt to the rotation of the external shaft. The damping chamber 3 is annular, and the damping chamber 3 is coaxially arranged with the shaft hole 13. The bottom of the damping chamber 3 is sealed, and the upper end is open. A sealing step 2 coaxial with the shaft hole 13 is provided at the top of the housing 6. The sealing step 2 and the recessed ring are used to clamp the sealing ring a8 to prevent the damping oil from leaking out. The inner and outer sides of the bottom of the end cover 7 are on the same horizontal plane, and the bottom of the recessed ring and the sealing step 2 are The surfaces are on the same horizontal plane, which is convenient for processing. The shell 6 is not provided with a circle of inner grooves like some dampers, so the overall processing is more convenient. A convex positioning block 5 is axially provided on the outer wall of the shell 6 to prevent the shell 6 from rotating. There are two damping holes 10, which makes the rotating core 4 obtain uniform resistance due to the obstruction of the flow of damping fluid during rotation, and the damping effect is long-lasting and the service life is long; the damping hole 10 makes the inner cavity of the rotating core 4 also produce a damping effect with the damping oil, further making the resistance more uniform.

[0028] 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 novel rotary damper, comprising a housing (6) and a rotor (1), characterized in that: A retaining ring (15) is formed inwardly at the bottom of the shell (6), a damping chamber (3) is provided between the inner wall of the shell (6) and the retaining ring (15), an end cover (7) is provided at the upper part of the rotor (1), a ring-shaped rotating core (4) is provided at the lower part of the rotor (1), the rotating core (4) is coaxially mounted in the damping chamber (3), a damping fluid is injected into the gap between the damping chamber (3) and the rotating core (4), a damping hole (10) communicating with the inner chamber is transversely provided on the rotating core (4), a circle of retaining grooves (16) is provided on the upper inner wall of the shell (6), a convex ring (14) is provided on the upper outer wall of the rotor, the convex ring (14) is retained on the retaining groove (16), and the inner side and the outer side of the bottom of the end cover (7) are on the same horizontal plane.

2. The novel rotary damper according to claim 1 is characterized in that: A sealing step (2) is provided at the opening of the housing (6), and the upper outer wall of the rotor (1) is snap-fitted to the sealing step (2).

3. The novel rotary damper according to claim 1 is characterized in that: The damping holes (10) are two in number and are arranged opposite to each other.

4. The novel rotary damper according to claim 1 is characterized in that: The upper outer wall of the rotor (1) is provided with a sealing ring a (8), which is sleeved on a recessed ring of the rotating core (4), the recessed ring being below the end cover (7), and the recessed ring and the bottom surface of the sealing step being on the same horizontal plane.

5. The novel rotary damper according to claim 1 is characterized in that: The outer wall of the top of the retaining ring (15) is provided with a step, a sealing ring b is provided at the step, and the lower part of the inner wall of the retaining ring (15) is provided with two circles of recessed grooves a (12).

6. The novel rotary damper according to claim 1 is characterized in that: The outer wall of the bottom of the rotating core (4) is provided with an inclined surface (9).

7. The novel rotary damper according to claim 1 is characterized in that: The bottom of the housing (6) is provided with a recessed groove b (11).

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