Sliding friction one-way damping structure

Abstract

The utility model discloses a sliding friction one-way damping structure, which relates to the technical field of mechanical swing arms, and comprises a central shaft sleeve, a rotating shaft sleeve arranged on the periphery of the central shaft sleeve, and a damping component arranged between the central shaft sleeve and the rotating shaft sleeve; the fixed tooth joint shell is arranged on the periphery of the rotating shaft sleeve in a sleeving mode, a plurality of limiting grooves are formed in the inner side of the fixed tooth joint shell, a clamping assembly is arranged in each limiting groove, and the clamping assemblies are matched with the peripheral surface of the rotating shaft sleeve; according to the sliding friction one-way damping structure, when the fixed tooth joint shell is rotated, the clamping assembly can be driven to apply clamping force to the outer surface of the rotating shaft sleeve, so that one-way self-locking is achieved, and the risk that a swing arm rapidly falls due to the dead weight is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical swing arms, and more specifically, relates to a sliding friction one-way damping structure. Background Art

[0002] In a swing arm structure, the arm's own weight can cause it to fall rapidly, posing a risk of collision. Within confined space, the one-way bearing can only support the weight of the swing arm itself. When an auxiliary tool is attached to the end, the load increases, and the one-way damping effect decreases. A larger one-way damping structure is desired to still provide adequate damping force when the tool is attached. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies in the existing technology and provide a sliding friction one-way damping structure, in which, when the fixed tooth joint housing is rotated, the clamping assembly can be driven to apply a clamping force to the outer surface of the rotating shaft sleeve, thereby achieving one-way self-locking and avoiding the risk of rapid falling due to the weight of the swing arm.

[0004] In order to achieve the above object, the utility model provides a sliding friction one-way damping structure, comprising:

[0005] A central sleeve, with a rotating sleeve arranged on its outer periphery, and a damping assembly arranged between the central sleeve and the rotating sleeve;

[0006] The fixed tooth joint housing is sleeved on the outer circumference of the rotating shaft sleeve. A plurality of limiting grooves are provided on the inner side of the fixed tooth joint housing. A clamping assembly is provided in each limiting groove. The clamping assembly cooperates with the outer circumferential surface of the rotating shaft sleeve.

[0007] Optionally, the fixed tooth joint housing is a barrel-shaped structure, the limiting grooves are evenly distributed on the inner side of the fixed tooth joint housing, the bottom of the limiting grooves and the cross-section of the fixed tooth joint housing are not on the same plane, and the bottom of the limiting grooves fits the clamping assembly.

[0008] Optionally, the clamping assembly includes:

[0009] A spring fixing block, one side of which is slidably fitted with the bottom of the limiting groove;

[0010] a compression spring, one end of which is connected to the other end of the spring fixing block;

[0011] A cylindrical pin is connected to the other end of the compression spring, and the cylindrical pin is in contact with the outer circumferential surface of the rotating sleeve.

[0012] Optionally, the moving trajectory of the spring fixing block is tangent to the outer peripheral surface of the rotating sleeve.

[0013] Optionally, the damping assembly includes a locking nut threaded onto one end of the central sleeve, and a damping plate is provided between an end surface of the locking nut and an end surface of the rotating sleeve.

[0014] Optionally, a butterfly spring is provided between the damping plate and the locking nut.

[0015] Optionally, the fixed tooth joint housing is provided with at least two limiting grooves along the circumferential direction, and the limiting grooves match the outer peripheral surface of the rotating sleeve.

[0016] Optionally, a handle is connected to the outer side of the fixed tooth joint housing.

[0017] The utility model provides a sliding friction one-way damping structure, which has the following beneficial effects: the sliding friction one-way damping structure applies a clamping force to the outer surface of the rotating shaft sleeve through a simple cylindrical pin and spring connection structure under the drive of the fixed tooth joint housing, thereby improving the locking force on the rotating shaft sleeve; in addition, a locking nut is threaded on the central shaft sleeve, and an extrusion force is applied to the butterfly spring through the locking nut, which can change the degree of fit between the damping plate and the rotating shaft sleeve, thereby realizing the adjustment of a larger unidirectional damping.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0020] Figure 1 The figure shows the external structure of a sliding friction one-way damping structure according to an embodiment of the present utility model.

[0021] Figure 2 Shown Figure 1 AA section view.

[0022] Figure 3 Shown Figure 1 CC section view.

[0023] Figure 4 A structural schematic diagram of a fixed tooth joint housing according to an embodiment of the present utility model is shown.

[0024] Description of reference numerals:

[0025] 1. Center sleeve; 2. Rotating sleeve; 3. Fixed gear joint housing; 4. Limiting groove; 5. Spring fixing block; 6. Compression spring; 7. Cylindrical pin; 8. Locking nut; 9. Damping plate; 10. Butterfly spring; 11. Limiting groove; 12. Handle. DETAILED DESCRIPTION

[0026] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0027] The utility model provides a sliding friction one-way damping structure, comprising:

[0028] A central shaft sleeve, a rotating shaft sleeve is arranged on the outer periphery, and a damping component is arranged between the central shaft sleeve and the rotating shaft sleeve;

[0029] The fixed tooth joint housing is sleeved on the outer circumference of the rotating shaft sleeve. A plurality of limiting grooves are provided on the inner side of the fixed tooth joint housing. A clamping assembly is provided in each limiting groove. The clamping assembly cooperates with the outer circumferential surface of the rotating shaft sleeve.

[0030] Specifically, a central shaft sleeve and a rotating shaft sleeve are provided in the sliding friction one-way damping structure, which are connected to each other and can rotate relative to each other. A fixed tooth joint shell is also provided on the outside of the rotating shaft sleeve, and the fixed tooth joint shell is connected to the central shaft sleeve. When the relative position of the central shaft sleeve and the rotating shaft sleeve needs to be locked, the fixed tooth joint shell can be adjusted to drive the clamping assembly to move, so that the clamping assembly can apply an extrusion force to the outer surface of the rotating shaft sleeve, so that the rotating shaft sleeve is locked and fixed.

[0031] Optionally, the fixed tooth joint housing is a barrel-shaped structure, the limiting grooves are evenly distributed on the inner side of the fixed tooth joint housing, the bottom of the limiting groove and the cross-section of the fixed tooth joint housing are not on the same plane, and the bottom of the limiting groove fits the clamping assembly.

[0032] Optionally, the clamping assembly comprises:

[0033] One side of the spring fixing block is slidably fitted with the bottom of the limiting groove;

[0034] A compression spring, one end of which is connected to the other end of the spring fixing block;

[0035] The cylindrical pin is connected to the other end of the compression spring, and the cylindrical pin fits the outer circumferential surface of the rotating sleeve.

[0036] Specifically, a plurality of limiting grooves are provided on the inner side of the fixed tooth joint housing along the circumferential direction, and the bottom surface of the limiting groove forms a certain angle with the plane on which the fixed tooth joint housing rotates. When the fixed tooth joint housing rotates at a certain angle, the bottom surface of the limiting groove will exert a force on the spring fixing block, so that the spring fixing block drives the spring to be squeezed toward the cylindrical pin, and the cylindrical pin is squeezed by the elastic force of the spring itself, so that the cylindrical pin can exert a clamping force on the outer surface of the rotating shaft sleeve.

[0037] Optionally, the moving track of the spring fixing block is tangent to the outer peripheral surface of the rotating sleeve.

[0038] Specifically, since the expansion and contraction direction of the spring and the moving direction of the spring fixing block are tangent to the outer surface of the local rotating sleeve, when the fixed tooth joint housing rotates, the cylindrical pin can move along the tangential direction of the rotating sleeve, thereby achieving one-way locking and fixing of the rotating sleeve.

[0039] Optionally, the damping assembly includes a locking nut threaded on one end of the central sleeve, and a damping plate is provided between an end surface of the locking nut and an end surface of the rotating sleeve.

[0040] Optionally, a butterfly spring is provided between the damping plate and the locking nut.

[0041] Specifically, a locking nut is screwed onto the central sleeve, and the pressure applied to the damping plate is adjusted by adjusting the position of the locking nut, thereby changing the damping torque of the damping plate on the rotating sleeve.

[0042] Optionally, the fixed tooth joint housing is provided with at least two limiting grooves along the circumferential direction, and the limiting grooves match the outer peripheral surface of the rotating sleeve.

[0043] Specifically, a limiting groove is provided on the fixed tooth joint housing to ensure that the installation position of the fixed tooth joint housing is accurate, and the relatively raised bottom surface of the limiting groove will not be aligned with the spring fixing block after the fixed tooth joint housing is installed. If such a relative installation position is formed, even if the fixed tooth joint housing is rotated, the bottom of the limiting groove cannot squeeze the spring, and the cylindrical pin will not apply squeezing force to the outer peripheral surface of the rotating shaft sleeve.

[0044] Optionally, a handle is connected to the outer side of the fixed tooth joint housing.

[0045] Specifically, the fixed tooth joint housing is rotationally adjusted and controlled by a handle, and the handle can be controlled manually or electrically, so that the sliding friction unidirectional damping structure can be applied to more swing arm robots.

[0046] Example

[0047] like Figures 1 to 4 As shown, the utility model provides a sliding friction one-way damping structure, comprising:

[0048] A central sleeve 1 is provided with a rotating sleeve 2 on its outer periphery, and a damping component is provided between the central sleeve 1 and the rotating sleeve 2;

[0049] The fixed tooth joint housing 3 is sleeved on the outer circumference of the rotating shaft sleeve 2. A plurality of limiting grooves 4 are provided on the inner side of the fixed tooth joint housing 3. A clamping assembly is provided in each limiting groove 4, and the clamping assembly cooperates with the outer circumferential surface of the rotating shaft sleeve 2.

[0050] In this embodiment, the fixed tooth joint housing 3 has a barrel-shaped structure, and the limiting grooves 4 are evenly distributed on the inner side of the fixed tooth joint housing 3. The bottom of the limiting groove 4 and the cross-section of the fixed tooth joint housing 3 are not on the same plane, and the bottom of the limiting groove 4 fits with the clamping assembly.

[0051] In this embodiment, the clamping assembly includes:

[0052] One side of the spring fixing block 5 is slidably fitted with the bottom of the limiting groove 4;

[0053] A compression spring 6, one end of which is connected to the other end of the spring fixing block 5;

[0054] The cylindrical pin 7 is connected to the other end of the compression spring 6 , and the cylindrical pin 7 is in contact with the outer circumferential surface of the rotating sleeve 2 .

[0055] In this embodiment, the moving trajectory of the spring fixing block 5 is tangent to the outer peripheral surface of the rotating sleeve 2 .

[0056] In this embodiment, a locking nut 8 is threadedly connected to one end of the central sleeve 1 , and a damping plate 9 is provided between the end surface of the locking nut 8 and the end surface of the rotating sleeve 2 .

[0057] In this embodiment, a butterfly spring 10 is provided between the damping plate 9 and the locking nut 8 .

[0058] In this embodiment, the fixed tooth joint housing 3 is provided with at least two limiting grooves 11 along the circumferential direction, and the limiting grooves 11 match the outer peripheral surface of the rotating shaft sleeve 2 .

[0059] In this embodiment, a handle 12 is connected to the outer side of the fixed tooth joint housing 3 .

[0060] In summary, when the rotational damping torque of the rotating sleeve 2 needs to be adjusted, the sliding friction one-way damping structure can squeeze the butterfly spring 10 by screwing the locking nut 8, so that the elastic force of the butterfly spring 10 will be applied to the damping plate 9, and the friction between the end face of the damping plate 9 and the end face of the rotating sleeve 2 will increase, thereby increasing the rotational damping torque of the rotating sleeve 2; when the rotation position of the rotating sleeve 2 needs to be locked, the fixed tooth joint housing 3 needs to be rotated a certain angle, so that the bottom surface of the limit groove 4 will drive the elastic force The spring fixing block 5 moves, which increases the elastic force of the compressed compression spring 6 on the cylindrical pin 7, and multiple cylindrical pins 7 in the circumferential direction will clamp the rotating sleeve 2 within the self-locking angle, thereby realizing the locking of the rotating sleeve 2; if it is necessary to continue to adjust the rotation position of the rotating sleeve 2, it is necessary to rotate the fixed tooth joint housing 3 in the opposite direction by a certain angle, so that the concave surface of the bottom of the limiting groove 4 corresponds to the spring fixing block 5, so that the compression spring 6 is no longer compressed, and the cylindrical pin 7 and the rotating sleeve 2 are separated from each other, thereby realizing the free rotation of the rotating sleeve 2.

[0061] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A sliding friction one-way damping structure, characterized in that: include: A central sleeve, with a rotating sleeve arranged on its outer periphery, and a damping assembly arranged between the central sleeve and the rotating sleeve; The fixed tooth joint housing is sleeved on the outer circumference of the rotating shaft sleeve. A plurality of limiting grooves are provided on the inner side of the fixed tooth joint housing. A clamping assembly is provided in each limiting groove. The clamping assembly cooperates with the outer circumferential surface of the rotating shaft sleeve.

2. The sliding friction one-way damping structure according to claim 1, characterized in that: The fixed tooth joint housing is a barrel-shaped structure, the limiting grooves are evenly distributed on the inner side of the fixed tooth joint housing, the bottom of the limiting groove and the cross-section of the fixed tooth joint housing are not on the same plane, and the bottom of the limiting groove fits the clamping assembly.

3. The sliding friction one-way damping structure according to claim 2, characterized in that: The clamping assembly comprises: A spring fixing block, one side of which is slidably fitted with the bottom of the limiting groove; a compression spring, one end of which is connected to the other end of the spring fixing block; A cylindrical pin is connected to the other end of the compression spring, and the cylindrical pin is in contact with the outer circumferential surface of the rotating sleeve.

4. The sliding friction one-way damping structure according to claim 3, characterized in that: The moving track of the spring fixing block is tangent to the outer peripheral surface of the rotating sleeve.

5. The sliding friction one-way damping structure according to claim 1, characterized in that: The damping assembly includes a locking nut threaded on one end of the central sleeve, and a damping plate is arranged between the end surface of the locking nut and the end surface of the rotating sleeve.

6. The sliding friction one-way damping structure according to claim 5, characterized in that: A butterfly spring is arranged between the damping plate and the locking nut.

7. The sliding friction one-way damping structure according to claim 1, characterized in that: The fixed tooth joint housing is provided with at least two limiting grooves along the circumferential direction, and the limiting grooves match the outer peripheral surface of the rotating sleeve.

8. The sliding friction one-way damping structure according to claim 1, characterized in that: The outer side of the fixed tooth joint housing is connected with a handle.

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