One-way rotating damper

Abstract

The utility model discloses a one-way rotating damper. The problem that an existing one-way rotating damper is high in cost due to the fact that a one-way bearing, a torsion spring and other structures are adopted is mainly solved. The containing groove is formed in the rotating disc, and a first transmission part is arranged on the circumferential inner wall of the containing groove; the connecting disc is rotatably mounted in the accommodating groove; the sliding block is installed on the connecting disc and moves front and back in the radial direction of the connecting disc, a linkage block is arranged on the sliding block, and a second transmission part used for being matched with the first transmission part is arranged on the sliding block; the linkage disc is arranged in the shell and is in linkage connection with the rotating shaft, a linkage groove is formed in the linkage disc, and when the linkage disc rotates, the linkage disc drives the second transmission part to make contact with or be separated from the first transmission part through the linkage groove and a linkage block which are matched with each other. The utility model provides a one-way rotating damper which does not need parts such as a one-way bearing, can realize forward rotation or reverse rotation one-way rotation with torsion, and is low in cost, simple in structure and effective in function.

Description

Technical Field

[0001] The utility model relates to the field of dampers, in particular to a one-way rotation damper. Background Art

[0002] A one-way rotary damper is a device used to control the speed of rotational motion and provide a smooth damping effect. It can be designed with an internal one-way mechanism to provide damping resistance only in a specific rotation direction, while achieving free rotation with no resistance or low resistance in the reverse direction.

[0003] In the unidirectional structure of the traditional one-way rotary damper, the main moving one-way bearings, torsion springs and other structures are used to achieve the unidirectional rotation effect. This type of structure is relatively expensive and is limited by the size of space and structure. It is not suitable for some products with small space. Because the one-way bearings, torsion springs, etc. are made of metal, the friction generated by the relative movement will increase the torque of the reverse rotation, affecting the experience. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model provides a one-way rotation damper, which mainly solves the problem that the current one-way rotation damper adopts one-way bearings, torsion springs and other structures with high costs.

[0005] The technical solution of the utility model is:

[0006] A one-way rotary damper comprises a housing, a turntable and a rotating shaft, wherein the turntable is rotatably mounted in the housing, wherein the housing contains damping oil for providing resistance when the turntable rotates, and the rotating shaft and the turntable are rotatably mounted.

[0007] The receiving groove is provided on the rotating disk, and the circumferential inner wall of the receiving groove is provided with a first transmission part;

[0008] A connecting plate is rotatably mounted in the receiving groove;

[0009] a slider, mounted on the connecting disk and movable forward and backward along the radial direction of the connecting disk, the slider being provided with a linkage block and a second transmission portion for cooperating with the first transmission portion;

[0010] The linkage disk is arranged in the housing and is linked to the rotating shaft. The linkage disk is provided with a linkage groove. When the linkage disk rotates, it drives the second transmission part to contact or separate with the first transmission part through the matching linkage groove and linkage block.

[0011] The first transmission part is a first transmission tooth provided on the inner wall of the accommodating groove, and the second transmission part is a second transmission tooth provided on the outer wall of the sliding block.

[0012] The connecting disk is provided with a notch groove, and the sliding block is arranged in the notch groove.

[0013] A slide rail is provided in the notch groove, and a slide groove matched with the slide rail is provided on the slider.

[0014] The connecting disk is provided with a connecting block, and the linkage disk is provided with a mounting groove connected with the connecting block.

[0015] A sealing ring is provided between the circumferential outer wall of the turntable and the circumferential inner wall of the shell.

[0016] The linkage groove includes a first guide groove. When the rotating shaft rotates clockwise, the linkage block cooperates with the first guide groove to make the second transmission part contact with the first transmission part; when the rotating shaft rotates counterclockwise, the linkage block cooperates with the first guide groove to separate the second transmission part from the first transmission part.

[0017] The linkage groove includes a second guide groove. When the rotating shaft rotates counterclockwise, the linkage block cooperates with the second guide groove to make the second transmission part contact with the first transmission part; when the rotating shaft rotates clockwise, the linkage block cooperates with the second guide groove to separate the second transmission part from the first transmission part.

[0018] The beneficial effects of the utility model are as follows: the utility model provides a one-way rotation damper, which does not require components such as one-way bearings, can achieve forward or reverse one-way rotation with torque, has low cost, simple structure and effective function. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the utility model.

[0020] Figure 2 This is an exploded diagram of an embodiment of the present invention.

[0021] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0022] Figure 4 This is a partial explosion diagram of an embodiment of the utility model.

[0023] Figure 5 This is an internal schematic diagram of an embodiment of the present invention.

[0024] Figure 6 This is an internal schematic diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention is further described below with reference to the accompanying drawings. A one-way rotary damper includes a shell 1, a turntable 2 and a rotating shaft 3. The turntable is rotatably installed in the shell, and the shell contains damping oil 11 for providing resistance when the turntable rotates. The rotating shaft and the turntable are rotatably installed. It also includes a receiving groove 21, which is provided on the turntable and has a first transmission part 211 on its circumferential inner wall; a connecting disk 4, which is rotatably installed in the receiving groove; a slider 41, which is installed on the connecting disk and moves back and forth along the radial direction of the connecting disk. A linkage block 411 is provided on the slider, and a second transmission part 412 for cooperating with the first transmission part is provided on the slider; a linkage disk 31, which is provided in the shell and is linked to the rotating shaft. A linkage groove 6 is provided on the linkage disk. When the linkage disk rotates, it drives the second transmission part to contact or separate with the first transmission part through the matching linkage groove and linkage block. The rotating shaft is connected to the load and can rotate. A through hole 101 is provided in the housing, which allows the rotating shaft to extend partially and also allows the rotating shaft to rotate. Damping oil provides resistance to the rotating disk, and different resistance levels can be obtained by replacing different oils. When the rotating shaft rotates in the forward direction, it drives the linkage disk to rotate. The linkage groove on the linkage disk drives the linkage block on the slider, thereby driving the slider to move in the radial direction of the connecting disk. When the second transmission part on the slider contacts the first transmission part, the entire transmission chain is connected. When the rotating shaft rotates, additional power is required to overcome the resistance of the damping oil, thereby achieving a one-way damping effect. However, when the rotating shaft rotates in the reverse direction, the slider will not slide out. The first and second transmission parts do not contact each other, and in this case, there is no need to overcome the resistance of the damping oil. Because the slider moves back and forth in the radial direction, it will not misalign, and the overall structure is more stable. The inner diameter of the through hole is smaller than the linkage disk, so the rotating shaft can only rotate and will not fall out. The linkage disk and the rotating shaft can be integrated or welded, bonded, etc.

[0026] The first transmission part is a first transmission tooth provided on the inner wall of the accommodating groove, and the second transmission part is a second transmission tooth provided on the outer wall of the slider. Transmission through the transmission teeth is more stable.

[0027] The connecting plate is provided with a notch groove 42, and the slider is arranged in the notch groove.

[0028] The notch is provided with a slide rail 421, and the slider is provided with a slide groove 414 that matches the slide rail. The structure is simple, and the slider can move stably along the radial direction.

[0029] The connecting disk is provided with a connecting block 43, and the linkage disk is provided with a mounting groove 33 connected to the connecting block. The mounting groove is rotatably connected to the connecting block so that the linkage disk can rotate relative to the connecting disk to better drive the slider.

[0030] A sealing ring 5 is provided between the circumferential outer wall of the turntable and the circumferential inner wall of the housing to play a sealing role.

[0031] The linkage slot includes a first guide slot 61. When the shaft rotates clockwise, the linkage block cooperates with the first guide slot to bring the second transmission part into contact with the first transmission part. When the shaft rotates counterclockwise, the linkage block cooperates with the first guide slot to separate the second transmission part from the first transmission part, thereby achieving one-way damping.

[0032] The linkage slot includes a second guide slot 62. When the shaft rotates counterclockwise, the linkage block engages with the second guide slot to bring the second transmission part into contact with the first transmission part. When the shaft rotates clockwise, the linkage block engages with the second guide slot to separate the second transmission part from the first transmission part. Similar to the above, except that the slot extends in a different direction, this application has two sets of guide slots, allowing users to select different damping directions for installation.

[0033] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0035] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be construed as limiting the present invention, but any improvements based on the spirit of the present invention should fall within the scope of protection of the present invention.

Claims

1. A one-way rotary damper comprising a housing, a turntable, and a rotating shaft, wherein the turntable is rotatably mounted within the housing, wherein damping oil is contained within the housing to provide resistance to the rotation of the turntable, and wherein the rotating shaft is rotatably mounted to the turntable, characterized in that: Also includes The receiving groove is provided on the rotating disk, and the circumferential inner wall of the receiving groove is provided with a first transmission part; A connecting plate is rotatably mounted in the receiving groove; a slider, mounted on the connecting disk and movable forward and backward along the radial direction of the connecting disk, the slider being provided with a linkage block and a second transmission portion for cooperating with the first transmission portion; The linkage disk is arranged in the housing and is linked to the rotating shaft. The linkage disk is provided with a linkage groove. When the linkage disk rotates, it drives the second transmission part to contact or separate with the first transmission part through the matching linkage groove and linkage block.

2. The one-way rotation damper according to claim 1, characterized in that: The first transmission part is a first transmission tooth provided on the inner wall of the accommodating groove, and the second transmission part is a second transmission tooth provided on the outer wall of the sliding block.

3. The one-way rotation damper according to claim 1, characterized in that: The connecting disk is provided with a notch groove, and the sliding block is arranged in the notch groove.

4. The one-way rotation damper according to claim 3, characterized in that: A slide rail is provided in the notch groove, and a slide groove matched with the slide rail is provided on the slider.

5. The one-way rotation damper according to claim 1, characterized in that: The connecting disk is provided with a connecting block, and the linkage disk is provided with a mounting groove connected with the connecting block.

6. A one-way rotation damper according to any one of claims 1 to 5, characterized in that: A sealing ring is provided between the circumferential outer wall of the turntable and the circumferential inner wall of the shell.

7. A one-way rotation damper according to any one of claims 1 to 5, characterized in that: The linkage groove includes a first guide groove. When the rotating shaft rotates clockwise, the linkage block cooperates with the first guide groove to make the second transmission part contact with the first transmission part; when the rotating shaft rotates counterclockwise, the linkage block cooperates with the first guide groove to separate the second transmission part from the first transmission part.

8. The one-way rotation damper according to any one of claims 1 to 5, characterized in that: The linkage groove includes a second guide groove. When the rotating shaft rotates counterclockwise, the linkage block cooperates with the second guide groove to make the second transmission part contact with the first transmission part; when the rotating shaft rotates clockwise, the linkage block cooperates with the second guide groove to separate the second transmission part from the first transmission part.

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