A multi-rotary rotary damper with adjustable damping torque

Abstract

A multi-rotary rotary damper with adjustable damping torque. Provided is a multi-rotary rotary damper with adjustable damping torque, which has a simple structure, a large damping torque and an adjustable resistance torque. It includes a base, a rotating body, a lower gasket, a housing, an upper gasket, an adjusting nut, a spring and a rotating shaft; the base is convex-shaped, a stepped hole with a larger upper part and a smaller lower part is provided in the middle of the base, the lower gasket has a middle hole, the lower gasket is horizontally arranged in the large stepped hole of the stepped hole, a support ring is provided on the rotating shaft, the support ring of the rotating shaft is arranged on the lower gasket, the lower part of the rotating shaft passes through the middle hole of the lower gasket and extends out of the stepped hole, a flange end is provided at the bottom of the housing, and the flange end is connected to the lower part of the base; damping silicone oil is provided in the housing. The invention is convenient for processing and the adjustment is reliable.

Description

Technical Field

[0001] The present invention relates to a damper, and in particular to a multi-rotary rotary damper with adjustable damping torque. Background Art

[0002] With the continuous development of the electric actuator industry, the passive spring return type electric actuator is the focus of the future development of the industrial control industry. However, the passive spring return type electric actuator has a problem of large impact during the reset process. As a key component for eliminating impact in the civilian electronics industry, dampers have been widely used. However, dampers in the civilian industry have the disadvantages of small damping torque and non-adjustable damping torque. Summary of the Invention

[0003] In view of the above problems, the present invention provides a multi-rotary rotary damper with adjustable damping torque, which has a simple structure, large damping torque and adjustable resistance torque.

[0004] The technical solution of the present invention is as follows: It includes a base, a rotating body, a lower gasket, a housing, an upper gasket, an adjusting nut, a spring and a rotating shaft;

[0005] The base is in a convex shape, and a stepped hole with a large upper part and a small lower part is provided in the middle of the base. The lower gasket has a central hole, and the lower gasket is horizontally arranged in the large stepped hole of the stepped hole.

[0006] A support ring is provided on the rotating shaft, and the support ring of the rotating shaft is arranged on the lower gasket. The lower part of the rotating shaft passes through the central hole of the lower gasket and extends out of the stepped hole.

[0007] A receiving hole one and a receiving hole two are respectively provided in the middle of the top and bottom of the rotating body. A connecting cylinder with a perforation is provided in the middle of the receiving hole one. The perforation communicates with the receiving hole two. The upper part of the base is located in the receiving hole two. The upper part of the rotating shaft is located in the receiving hole two and the perforation. The rotating shaft and the rotating body are connected by a flat key.

[0008] The connecting cylinder has an external thread, and the adjusting nut is threadedly connected to the connecting cylinder. The top of the adjusting nut is closed, and the spring is located between the adjusting nut and the rotating shaft.

[0009] The housing has a placement hole, the rotating body is located in the placement hole, a retaining ring is provided at the top of the placement hole, and the upper gasket is located between the retaining ring and the adjusting nut.

[0010] The bottom of the housing is provided with a flange end, and the flange end is connected to the lower part of the base.

[0011] The housing is filled with damping silicone oil.

[0012] It also includes a gasket, a sealing plug and a spacer. The sealing plug is used to be connected to the upper part of the retaining ring of the placement hole, and the spacer and the gasket are located between the sealing plug and the retaining ring.

[0013] The base, the rotating body, the housing, the adjusting nut and the sealing plug are made of aluminum alloy.

[0014] It also includes a sealing ring, and the sealing ring is located between the flange end of the housing and the base.

[0015] It also includes a copper bushing, the copper bushing is arranged in the small stepped hole of the stepped hole, and the rotating shaft is located in the copper bushing.

[0016] The rotating body and the housing are in clearance fit, and the rotating body and the base are in clearance fit.

[0017] The top of the adjusting nut is provided with a small hole.

[0018] In the working process of the present invention, by arranging a rotating body between the base and the housing, the rotating body is driven to move by the rotating shaft. Since the adjusting nut is threadedly connected to the connecting cylinder of the rotating body, it is convenient to form an integral body; a spring is arranged between the rotating shaft and the adjusting nut, so that the adjusting nut is in contact with the upper gasket;

[0019] When the damping torque is realized, since damping silicone oil is arranged in the housing, during the rotation process of the rotating shaft, the rotating shaft drives the rotating body to move together, and in the moving process of the rotating body, frictional forces will be generated between the rotating body and the housing and the base due to the presence of the silicone oil;

[0020] When the damping torque is adjusted, during the operation of the damper, when the damping torque is insufficient, the adjusting nut can be adjusted. By the relative rotation between the adjusting nut and the rotating body, the contact area between the rotating body and the base and the outer shell is increased, thereby increasing the frictional force and finally realizing the increase of the damping torque.

[0021] The present invention is convenient for processing and the adjustment is reliable. Description of the Drawings

[0022] Figure 1 is the structural schematic diagram of the present invention,

[0023] Figure 2 is the structural schematic diagram of the rotating shaft,

[0024] Figure 3 is the connection structural schematic diagram of the rotating body and the adjusting nut;

[0025] In the figure, 1 is the base, 2 is the copper sleeve, 3 is the rotating body, 31 is the first accommodating hole, 32 is the second accommodating hole, 33 is the connecting cylinder, 4 is the lower gasket, 5 is the housing, 6 is the upper gasket, 7 is the sealing gasket, 8 is the sealing plug, 9 is the gasket, 10 is the adjusting nut, 101 is the small hole, 11 is the spring, 12 is the rotating shaft, 120 is the support ring, 13 is the retaining ring, 14 is the flange end, 15 is the sealing ring, 16 is the stepped hole. Detailed implementation manner

[0026] As shown in the present invention Figures 1-3 includes a base 1, a rotating body 3, a lower gasket 4, a housing 5, an upper gasket 6, an adjusting nut 10, a spring 11 and a rotating shaft 12;

[0027] The base 1 is in a convex shape, and a stepped hole 16 with a larger upper part and a smaller lower part is provided in the middle of the base 1. The lower gasket 4 has a middle hole, and the lower gasket 4 is horizontally arranged in the large stepped hole of the stepped hole.

[0028] A support ring 120 is provided on the rotating shaft 12. The support ring 120 of the rotating shaft is arranged on the lower gasket 4. The lower part of the rotating shaft passes through the middle hole of the lower gasket and extends out of the stepped hole.

[0029] The top and bottom of the rotating body 3 are respectively provided with a first accommodating hole 31 and a second accommodating hole 32 in the middle. A connecting cylinder 33 with a perforation is provided in the middle of the first accommodating hole. The perforation communicates with the second accommodating hole 32. The upper part of the base 1 is located in the second accommodating hole. The upper part of the rotating shaft 12 is located in the second accommodating hole and the perforation. The rotating shaft and the rotating body are connected by a flat key;

[0030] The connecting cylinder 33 has an external thread. The adjusting nut 10 is threadedly connected with the connecting cylinder 33. The top of the adjusting nut 10 is closed. The spring 11 is located between the adjusting nut and the rotating shaft;

[0031] The housing 5 has an installation hole. The rotating body 3 is located in the installation hole. A retaining ring 13 is provided at the top of the installation hole. The upper gasket 6 is located between the retaining ring and the adjusting nut;

[0032] The bottom of the housing 5 is provided with a flange end 14. The flange end is connected to the lower part of the base;

[0033] Damping silicone oil is provided inside the housing.

[0034] In the operation of the present invention, by arranging a rotating body between the base and the housing, the rotating body is driven to move by the rotating shaft. Since the adjusting nut is threadedly connected to the connecting cylinder of the rotating body, it is convenient to form an integral body; a spring is arranged between the rotating shaft and the adjusting nut, so that the adjusting nut is in contact with the upper gasket;

[0035] When the damping torque is realized, since damping silicone oil is provided in the housing, during the rotation of the rotating shaft, the rotating shaft drives the rotating body to move together. During the movement of the rotating body, frictional forces will be generated between the rotating body and the housing and the base due to the presence of the silicone oil.

[0036] When adjusting the damping torque, during the operation of the damper, when the damping torque is insufficient, the adjusting nut can be adjusted. By adjusting the relative rotation between the adjusting nut and the rotating body, the contact area between the rotating body and the base and the outer shell can be increased, thereby increasing the frictional force and finally realizing the increase of the damping torque.

[0037] It also includes a gasket 7, a sealing plug 8 and a spacer 9. The sealing plug is used to be connected to the upper part of the retaining ring of the placement hole, and the spacer and the gasket are located between the sealing plug and the retaining ring.

[0038] Setting the gasket, the sealing plug and the spacer facilitates the sealing of the top of the housing and the operation is reliable.

[0039] The base, the rotating body, the housing, the adjusting nut and the sealing plug are made of aluminum alloy.

[0040] High-quality 2A12 aluminum alloy can be selected to reduce the weight while ensuring the strength.

[0041] It also includes a sealing ring 15, and the sealing ring is located between the flange end of the housing and the base.

[0042] Setting the sealing ring improves the sealing performance between the housing and the base.

[0043] It also includes a copper bushing 2, the copper bushing is arranged in the small stepped hole of the stepped hole, and the rotating shaft is located in the copper bushing.

[0044] Setting the copper bushing ensures the strength and improves the wear resistance.

[0045] The copper bushing, the lower spacer, the upper spacer and the spacer are made of HPb59 material to improve the wear resistance while ensuring the strength.

[0046] The rotating shaft is made of 20Cr13 material, so that the rotating shaft has high rigidity and meets the requirements of industrial use.

[0047] The rotating body and the housing are in clearance fit, and the rotating body and the base are in clearance fit.

[0048] Through the clearance fit, it is convenient for the damping silicone oil to act.

[0049] The top of the adjusting nut 10 is provided with a small hole 101.

[0050] Setting the small hole can be used as a damping silicone oil replenishment hole.

[0051] In the application, the spring 11 is placed inside the rotating body 3 and fixed between the rotating shaft and the adjusting nut. Through the energy of the pre-compression of the spring, the relative position between the adjusting nut 10 and the rotating shaft 12 is fixed, thereby indirectly fixing the relative position between the rotating body 3 and the base 1.

[0052] By adjusting the adjusting nut 10, the change of the matching area between the rotating body and the base in the damper can be realized, and then the adjustment of its own damping torque can be realized.

[0053] Regarding the content disclosed in this case, the following points need to be explained:

[0054] (1) The attached drawings of the embodiments disclosed in this case only relate to the structures involved in the embodiments disclosed in this case, and other structures can refer to the general design;

[0055] (2) Without conflict, the embodiments disclosed in this case and the features in the embodiments can be combined with each other to obtain new embodiments;

[0056] The above is only the specific implementation manner disclosed in this case, but the protection scope of this disclosure is not limited thereto. The protection scope disclosed in this case shall be subject to the protection scope of the claims.

Claims

1. A multi-rotary rotary damper with adjustable damping torque, characterized in that, It includes a base, a rotating body, a lower gasket, a housing, an upper gasket, an adjusting nut, a spring and a rotating shaft; The base is in a convex shape. A stepped hole with a larger upper part and a smaller lower part is provided in the middle of the base. The lower gasket has a middle hole. The lower gasket is horizontally arranged in the large stepped hole of the stepped hole; A support ring is provided on the rotating shaft. The support ring of the rotating shaft is arranged on the lower gasket. The lower part of the rotating shaft passes through the middle hole of the lower gasket and extends out of the stepped hole; A receiving hole one and a receiving hole two are respectively provided in the middle of the top and bottom of the rotating body. A connecting cylinder with a perforation is provided in the middle of the receiving hole one. The perforation communicates with the receiving hole two. The upper part of the base is located in the receiving hole two. The upper part of the rotating shaft is located in the receiving hole two and the perforation. The rotating shaft and the rotating body are connected by a flat key; The connecting cylinder has an external thread. The adjusting nut is threadedly connected to the connecting cylinder. The top of the adjusting nut is closed. The spring is located between the adjusting nut and the rotating shaft; Through the energy of the pre-compression of the spring, the relative position between the adjusting nut and the rotating shaft is fixed, thereby indirectly fixing the relative position between the rotating body and the base; By adjusting the adjusting nut, the change in the matching area between the rotating body and the base in the damper is realized; The housing has an installation hole. The rotating body is located in the installation hole. A retaining ring is provided at the top of the installation hole. The upper gasket is located between the retaining ring and the adjusting nut; A flange end is provided at the bottom of the housing. The flange end is connected to the lower part of the base; Damping silicone oil is provided in the housing; There is a clearance fit between the rotating body and the housing, and there is a clearance fit between the rotating body and the base; A small hole is provided at the top of the adjusting nut.

2. The multi-rotation rotary damper with adjustable damping torque according to claim 1, wherein It further includes a sealing gasket, a sealing plug and a gasket. The sealing plug is used to be connected to the upper part of the retaining ring of the installation hole. The gasket and the sealing gasket are located between the sealing plug and the retaining ring.

3. The multi-rotation rotary damper with adjustable damping torque according to claim 2, wherein The base, the rotating body, the housing, the adjusting nut and the sealing plug are made of aluminum alloy.

4. A multi-rotation rotary damper with adjustable damping torque according to claim 1, characterized in that, It further includes a sealing ring. The sealing ring is located between the flange end of the housing and the base.

5. A multi-rotation rotary damper with adjustable damping torque according to claim 1, characterized in that, It further includes a copper sleeve. The copper sleeve is arranged in the small stepped hole of the stepped hole. The rotating shaft is located in the copper sleeve.

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