Clutch and rotating handle thereof

Abstract

The clutch comprises a clutch sleeve, a rotating shaft and a control piece, a clutch cavity is formed in the clutch sleeve, the rotating shaft is rotatably connected with the clutch sleeve, a locking piece used for wedging the rotating shaft is arranged in the clutch cavity, and the control piece is connected with the rotating shaft. An elastic piece capable of providing continuous locking for the locking piece to the rotating shaft is arranged in the clutch cavity, the control piece is installed on the clutch, a reset piece used for providing continuous reset elastic force for the control piece is arranged in the containing cavity, a sealing cover is connected to the bottom of the clutch, and a cover plate is arranged on the clutch. The locking piece can be rapidly controlled to unlock the rotating shaft by pressing the control piece, meanwhile, when the control piece is loosened, the elastic piece generates reset elastic force, the locking piece locks the rotating shaft again, the rotating shaft can be locked instantly after being located at any rotating position, the application scene requirement of any angle adjustment is met, and the practicability is high. And the operation flexibility and the use experience are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of clutches, in particular to a clutch and a rotating handle thereof. BACKGROUND

[0002] Clutch structures are usually used in the control of rotating parts locking and unlocking, which are suitable for precise angle adjustment and low resistance operation structures, including but not limited to camera rotating handles, upper hands, photography supports, gimbals, joints and other device accessories that need to frequently adjust the working angle.

[0003] The existing clutch technology mainly adopts gear meshing or toothed disc engagement structure to realize torque transmission and braking function in the field of rotation control. Taking the rotating handle of photography equipment as an example, its typical structure includes an outer toothed disc, an inner gear assembly and a locking pin, and the angle locking is realized by mechanical engagement between the gears.

[0004] However, the existing clutch still has significant defects: the traditional gear or toothed disc engagement structure must realize torque transmission through specific tooth shape matching, and there is a certain jerk feeling, the meshing angle is limited by the number of teeth and the module, and there is a certain angle requirement, and only fixed tooth pitch interval can realize engagement locking, it is difficult to realize 360-degree smooth rotation adjustment, which affects the accuracy and arbitrary rotation control of operation, the friction plate clutch realizes engagement through compression force, and the engagement strength is positively correlated with the compression force, so the engagement strength is affected by the engagement force, when the friction is increased, the engagement force is also increased, so the unlocking force is also increased, which causes the unlocking action to be laborious and difficult to control accurately, and affects the user experience.

[0005] The existing rotating handle for cameras usually uses gear or toothed disc clutch to control rotation or locking, that is, the camera lens can be rotated 360 degrees around the handle shaft for shooting when the handle is pressed without moving, but the existing rotating handle is difficult to accurately control and rotate at any angle for unlocking and locking clutch control, which affects the user experience. SUMMARY

[0006] The purpose of the present application is to solve the above defects, provide a clutch and a rotating handle thereof, to solve the technical problems of how to make the clutch rotate and lock at any angle, and how to make the clutch convenient to unlock, and improve the user experience.

[0007] The purpose of the present application is achieved in the following way:

[0008] A clutch includes a clutch sleeve, a rotating shaft, and a control component. The clutch sleeve has a clutch cavity inside. The rotating shaft is rotatably connected to the clutch sleeve. One end of the rotating shaft passes through the clutch cavity, and the other end of the rotating shaft extends outward through the clutch cavity. The clutch cavity is provided with a locking component for wedging the rotating shaft, and an elastic component is provided in the clutch cavity to provide continuous locking of the rotating shaft to the locking component. The control component is mounted on the clutch. One end of the control component passes through the clutch cavity, and the other end of the control component is exposed outside the clutch. A reset component is provided in a receiving cavity to provide continuous reset elastic force to the control component. A cover is connected to the bottom of the clutch, and a cover plate is provided on the clutch.

[0009] When pressure is applied to the control component, the control component can apply a squeezing force to the locking component, causing the locking component to overcome the elastic force of the elastic component and move axially, releasing the wedging on the rotating shaft, allowing the rotating shaft to rotate.

[0010] When the pressure of the control component is released, the control component is reset by the elastic force of the reset component, and the locking component applies frictional force to the rotating shaft under the elastic force of the elastic component, thereby locking the rotating shaft.

[0011] Furthermore, as described above, the inner wall of the clutch cavity is provided with a locking part for engaging the locking member. The locking member is installed in the locking part, and under the elastic force of the elastic member, the outer surface of the locking member is wedge-locked with the rotating shaft and the locking part through friction.

[0012] By replacing the meshing structure of traditional gears or gear discs with friction wedging, the jerking sensation is eliminated, and the friction locking is not limited by a fixed tooth pitch. It can achieve smooth rotation adjustment and locking at any angle of 360 degrees, solving the problem that traditional clutches can only lock at a fixed tooth pitch interval, thus improving operational precision.

[0013] The clutch chamber is a through-hole set inside the clutch, and the cross-section of the clutch chamber is tapered, so that the clutch chamber gradually expands from the end near the control component towards the cover. The locking part is arranged circumferentially on the inner wall of the clutch chamber, and the rotating shaft is coaxial with the clutch chamber.

[0014] Furthermore, in the above description, a push guide portion is formed at the end of the clutch cavity away from the control member. Push members are paired and arranged in the push guide portion. One end of the push member is connected to the locking member, and one end of the elastic member is in contact with the push member. The elastic member can apply a reset elastic force to the push member, so that the push member pushes the locking member to move towards the control member along the push guide portion to form a lock.

[0015] The push guide provides precise guidance for the axial movement of the pusher, avoiding movement deviation. It allows the elastic element to apply a reset force to the pusher, which in turn drives the locking element to reset, thereby generating frictional locking with the rotating shaft. This improves the reliability of the locking element's reset and the stability of the locking state.

[0016] Furthermore, as described above, the locking member and the pushing member are integrally formed, so that a locking gap is formed between the circumferentially distributed locking members for wedge-locking the rotating shaft.

[0017] The one-piece molding structure reduces the number of parts, improves structural strength and assembly accuracy; it ensures that the locking component always maintains effective contact with the rotating shaft, allowing the pushing component to move precisely along the axial direction and maintaining long-term stability of locking performance.

[0018] Furthermore, as described above, a pressing guide portion is formed at the end of the clutch cavity near the control member. The control members are paired and installed in the pressing guide portion. The control members are exposed on the clutch through the pressing end passing through the pressing guide portion. The bottom end of the control members extends into the clutch cavity toward the locking member. The control members are provided with a clearance hole for avoiding the rotating shaft. One end of the reset member contacts the rotating shaft, and the other end of the reset member contacts the bottom wall of the clearance hole.

[0019] The pressing guide ensures the smooth axial movement of the control component, and the clearance hole design avoids interference between the control component and the rotating shaft, ensuring smooth rotation of the rotating shaft; the reset component can provide a reset spring force to the control component, so that the control component automatically resets after the pressing force is released, simplifying the operation process.

[0020] Furthermore, as described above, the cover is located at the bottom of the clutch groove, and the elastic element is composed of a spring. One end of the spring is connected to the inside of the cover, and the other end of the spring is connected to the pusher.

[0021] The cover seals the clutch chamber, protecting the internal structure from external contamination; the spring provides continuous and stable locking force, ensuring that the locking element always remains locked.

[0022] Furthermore, as described above, the elastic element is composed of a spring, one end of which is connected to the inside of the cover, and the other end of which is connected to the locking element.

[0023] The elastic element can act directly on the locking element, shortening the force transmission path, reducing energy loss, and improving the locking element's response sensitivity to the elastic force of the elastic element, making the locking state switching faster and more precise.

[0024] Furthermore, as described above, there are two or more locking members, and the number and position of the locking parts are matched with those of the locking parts, so that the two or more locking members are distributed in a circumferential array within the locking parts, and the outer surface of the locking members is in contact with the outer surface of the locking parts and the rotating shaft.

[0025] The multiple locking components are arranged in a circumferential array, which evenly distributes the locking force to all points around the rotation axis, avoiding local stress concentration and reducing wear. At the same time, the synergistic effect of the multiple locking components can reduce the load on individual locking components, extend their service life, and ensure the stability and reliability of locking.

[0026] Furthermore, as described above, the locking member is composed of a conical pin. In the locked state, the outer side of the pin contacts the outer side of the rotating shaft through the conical surface to form a first friction point, and the pin contacts the locking part through the conical surface to form a second friction point and a third friction point. The locking part is composed of an included angle, an arc-shaped surface, or a curved surface.

[0027] The tapered design increases the contact area between the locking component and the rotating shaft and locking part. The three-point friction forms a stable wedge force, improving the locking strength. At the same time, the tapered structure can quickly release the friction force through axial movement during unlocking, reducing the force required for unlocking and solving the problem of difficult unlocking of traditional friction plate clutches.

[0028] Furthermore, as described above, one end of the rotating shaft is formed with a locking end, which passes through the clutch cavity and has its outer surface in contact with the locking element. The other end of the rotating shaft is formed with a connecting end, which extends outward through the cover.

[0029] The locking end bears the locking force in a concentrated manner, while the connecting end facilitates connection with external equipment (such as camera lenses), enabling reliable transmission between the rotating handle and the controlled component.

[0030] A rotary handle includes a handle body and a clutch. The handle body has a receiving cavity for installing the clutch. A cover plate for pressing the clutch sleeve is connected to the handle body. The pressing end of a control element is exposed through the cover plate. The handle body has a mounting hole communicating with the receiving cavity. The connecting end of a rotating shaft extends outward from the handle body through the mounting hole. A wear-resistant sleeve that matches the mounting hole is fitted onto the connecting end.

[0031] The housing and cover plate fix the clutch to ensure assembly stability; the control component's pressing end is exposed on the handle surface for easy user operation; the wear-resistant sleeve reduces friction and wear between the rotating shaft and the handle mounting hole, extends the service life of the rotating shaft, and ensures smooth rotation.

[0032] Furthermore, as described above, a positioning part is provided between the locking end and the connecting end, a first set of wear-resistant components is provided between the positioning part and the cover, and a second set of wear-resistant components is provided between the positioning part and the wear-resistant sleeve. The first set of wear-resistant components and the second set of wear-resistant components are coaxially connected to the rotating shaft, and both the first set of wear-resistant components and the second set of wear-resistant components are composed of gaskets and wear-resistant plates.

[0033] Wear-resistant components adjust the gap with shims and bear friction with wear-resistant plates, reducing direct wear between the rotating shaft and the cover and wear-resistant sleeve, reducing frictional resistance, and improving rotational accuracy; at the same time, they extend the life of key components, reduce maintenance frequency, and improve the user experience.

[0034] The beneficial effects of this invention are as follows: Through the synergistic action of the locking element and the elastic element within the clutch cavity, the locking element and the clutch cavity can apply a continuous locking friction force to the rotating shaft. When pressure is applied to the control element, the control element acts on the locking element through mechanical compression, overcoming the locking force of the elastic element, allowing the rotating shaft to rotate. When the pressure applied to the control element is released, the reset element provides a reset force to the control element, and at the same time, the elastic element generates a reset force, causing the locking element to lock the rotating shaft again. The elastic force of the elastic element allows the locking element to continuously apply a locking friction force to the rotating shaft, replacing the rigid meshing of traditional gear or gear disc structures. This makes the locking action not limited by the number of teeth, module, or tooth pitch angle, and the rotating shaft can achieve instant locking after rotating to any position, meeting the application scenario requirements of arbitrary angle adjustment, improving operational flexibility and user experience. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1;

[0036] Figure 2 This is a cross-sectional view of Embodiment 1;

[0037] Figure 3 This is an exploded view of the clutch in this embodiment;

[0038] Figure 4 This is a schematic diagram of the connection structure of the locking element in this embodiment;

[0039] Figure 5 This is a cross-sectional schematic diagram of the locking structure between the locking member and the rotating shaft in this embodiment;

[0040] Figure 6 This is a schematic diagram of the locking state of the locking member and the locking end in this embodiment;

[0041] Figure 7 This is a schematic diagram of the clutch sleeve in this embodiment;

[0042] Figure 8 This is a schematic diagram of the overall structure of Embodiment 2;

[0043] Figure 9 This is a cross-sectional schematic diagram of Embodiment 2;

[0044] Figure 10 This is a partial structural diagram of Embodiment 2;

[0045] The labels in the figure are as follows: 1-first friction point, 2-second friction point, 3-third friction point, 4-connector, 5-wear-resistant sleeve, 6-gasket, 7-wear-resistant plate;

[0046] 100-Clutch sleeve, 101-Clutch cavity, 102-Locking part, 103-Push guide part, 104-Press guide part;

[0047] 200 - Rotary shaft, 201 - Locking end, 202 - Connecting end, 203 - Positioning part;

[0048] 300-Control component, 301-Pressing end, 302-Extrusion part, 303-Limiting part, 304-Allowing hole;

[0049] 400-Locking component; 500-Elastic component; 600-Reset component; 700-Cap; 701-Positioning groove; 800-Push component; 900-Handle body; 901-Receiving cavity; 902-Mounting hole; 1000-Cover plate. Detailed Implementation

[0050] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0051] To make the technical problem to be solved, the technical solution and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0052] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] Example 1

[0054] In this embodiment, refer to Figures 1-7 The clutch, specifically implemented therein, includes a clutch sleeve 100, a rotating shaft 200, and a control component 300. The clutch sleeve 100 has a clutch cavity 101 inside. The rotating shaft 200 is rotatably connected to the clutch sleeve 100. One end of the rotating shaft 200 passes through the clutch cavity 101, and the other end extends outward through the clutch cavity 101. The clutch cavity 101 is provided with five locking elements 400 for wedging the rotating shaft 200. The five locking elements 400 are arranged in a... The clutch is arranged in a circular array. The clutch cavity 101 is provided with an elastic element 500 that can continuously lock the rotating shaft 200 to the locking element 400. The control element 300 is installed on the clutch. One end of the control element 300 is inserted into the clutch cavity 101 and the other end of the control element 300 is exposed outside the clutch. The receiving cavity 901 is provided with a reset element 600 for providing continuous reset elastic force to the control element 300. The bottom of the clutch is connected to a cover 700 and a cover plate 1000 is provided on the clutch.

[0055] When pressure is applied to the control member 300, the control member 300 can apply a squeezing force to the locking member 400, causing the locking member 400 to overcome the elastic force of the elastic member 500 and move axially and release the wedging on the rotating shaft 200, so that the rotating shaft 200 can rotate.

[0056] When the pressure of the control member 300 is released, the control member 300 is reset by the elastic force of the reset member 600, and the locking member 400 applies frictional force to the rotating shaft 200 under the elastic force of the elastic member 500, thereby locking the rotating shaft 200.

[0057] Specifically, in this embodiment, the five locking members 400 are arranged in a spaced array along the perimeter of the locking end 201. The elastic member 500 can drive the push plate to lock the five locking members 400 to lock the locking part 102. The control member 300 can simultaneously control the five locking members 400 to unlock.

[0058] Reference Figures 3-7 The inner wall of the clutch cavity 101 is provided with five locking parts 102 for engaging the locking member 400. The locking member 400 is installed in the locking part 102. The outer side of the locking member 400 contacts the locking part 102 and the locking end 201. Under the elastic force of the elastic member 500, the outer side of the locking member 400 is wedge-locked with the rotating shaft 200 and the locking part 102 through friction.

[0059] By replacing the meshing structure of traditional gears or gear discs with friction wedging, the jerking sensation is eliminated, and the friction locking is not limited by a fixed tooth pitch. It can achieve smooth rotation adjustment and locking at any angle of 360 degrees, solving the problem that traditional clutches can only lock at a fixed tooth pitch interval, thus improving operational precision.

[0060] The clutch cavity 101 is disposed through the clutch. The cross-section of the clutch cavity 101 is tapered, so that the clutch cavity 101 gradually expands from the end near the control member 300 toward the cover 700. The locking part 102 is arranged circumferentially on the inner wall of the clutch cavity 101. The rotating shaft 200 is coaxially disposed with the clutch cavity 101.

[0061] Reference Figure 6 The clutch cavity 101 has a push guide portion 103 at the end away from the control member 300. Push members 800 are paired and arranged in the push guide portion 103. One end of the push member 800 is connected to the locking member 400, and one end of the elastic member 500 is in contact with the push member 800. The elastic member 500 can apply a reset elastic force to the push member 800, so that the push member 800 pushes the locking member 400 along the push guide portion 103 to move towards the control member 300 to form a lock.

[0062] The guide section 103 provides precise guidance for the axial movement of the pusher 800, avoiding movement deviation, and allows the elastic member 500 to apply a reset force to the pusher 800. The pusher 800 can drive the locking member 400 to reset, thereby generating frictional locking with the rotating shaft 200, improving the reliability of the reset of the locking member 400 and the stability of the locking state.

[0063] Specifically, both the pusher 800 and the cover 700 have through holes for the connecting shaft to pass through, so that the connecting end 202 can extend outward by passing through the pusher 800 and the cover 700 in sequence. The inner diameter of the through hole is larger than the diameter of the connecting end 202, so that the rotation of the rotating shaft 200 can avoid friction from the through hole.

[0064] Specifically, in this embodiment, the pusher 800 is composed of a pusher plate, which is paired with the pusher guide 103 so that the pusher plate can move up and down along the pusher guide 103.

[0065] In some other embodiments, the locking member 400 and the pushing member 800 are integrally formed, so that the circumferentially distributed locking members 400 form a locking gap for wedging and locking the rotating shaft 200. The integrally formed structure reduces the number of parts turntables, improves structural strength and assembly accuracy; it ensures that the locking member 400 always maintains effective contact with the rotating shaft 200, allowing the pushing member 800 to move precisely along the axial direction, maintaining long-term stability of locking performance.

[0066] Reference Figure 7 The clutch cavity 101 has a pressing guide 104 formed at the end near the control member 300. The control member 300 is installed in the pressing guide 104. The control member 300 is exposed on the clutch through the pressing end 301 through the pressing guide 104. The bottom end of the control member 300 extends into the clutch cavity 101 toward the locking member 400. The control member 300 is provided with a clearance hole 304 for avoiding the rotating shaft 200. One end of the reset member 600 contacts the rotating shaft 200, and the other end of the reset member 600 contacts the bottom wall of the clearance hole 304.

[0067] Specifically, the control component 300 in this embodiment includes a squeezing part 302 and a limiting part 303. The limiting part 303 is paired with the pressing guide part 104. The pressing end 301 is protruding and disposed on the top of the limiting part 303. The squeezing part 302 is disposed on the bottom of the squeezing part 302 and passes through the clutch cavity 101.

[0068] When pressing force is applied to the pressing end 301, the reset member 600 is compressed, causing the limiting part 303 to move along the pressing guide part 104 towards the clutch cavity 101, so that the end face of the squeezing part 302 contacts the end of the conical needle, and can apply squeezing force to the conical needle, causing the conical needle to move along the locking part 102. Specifically, in this embodiment, the conical needle can move along the locking part 102 through the conical outer surface. When the conical needle moves towards the gradually expanding end of the clutch cavity 101, the outer surface of the conical needle disengages from locking the locking part 102. At this time, the rotating shaft 200 is unlocked and can rotate.

[0069] In this embodiment, the cover 700 is disposed at the bottom of the clutch groove, and the elastic element 500 is composed of a spring. One end of the spring is connected to the inner side of the cover 700, and the other end of the spring is connected to the pusher 800. The cover 700 seals the clutch cavity 101, protecting the internal structure from external contamination; the spring provides a continuous and stable locking force, ensuring that the locking element 400 always remains in the locked state.

[0070] Specifically, in this embodiment, four elastic elements 500 are provided. The inner side of the cover 700 is provided with a positioning groove 701 for installing the elastic elements 500, so that one end of the elastic element 500 contacts the positioning groove 701 and the other end of the elastic element 500 contacts the pusher 800. The four elastic elements 500 are distributed at the four corners of the pusher 800.

[0071] In some other embodiments, the elastic element 500 is composed of a spring, one end of which is connected to the inside of the cover 700, and the other end of which is connected to the locking element 400.

[0072] The elastic element 500 can act directly on the locking element 400, shortening the elastic force transmission path, reducing energy loss, and improving the response sensitivity of the locking element 400 to the elastic force of the elastic element 500, making the switching of the locking state faster and more precise.

[0073] In some other embodiments, there are two or more locking members 400, and the number and position of the locking part 102 are matched with those of the locking members 400, so that the two or more locking members 400 are distributed in a circumferential array within the locking part 102, and the outer surface of the locking member 400 is in contact with the outer surface of the locking part 102 and the rotating shaft 200.

[0074] The multiple locking elements 400 are arranged in a circumferential array, which evenly distributes the locking force to all points around the rotating shaft 200, avoiding local stress concentration and reducing wear. At the same time, the synergistic effect of the multiple locking elements 400 can reduce the load on a single locking element 400, extend its service life, and ensure the stability and reliability of locking.

[0075] In some other embodiments, the locking element 400 may be provided in three, four, five, or six, etc.

[0076] The multiple locking elements 400 further ensure frictional locking of the locking end 201, enhancing the stability and reliability of the rotating shaft 200 under locking. At the same time, the circumferential distribution of the multiple locking elements 400 ensures the effectiveness of the control element 300 in pressing to unlock and releasing to lock.

[0077] The locking member 400 is composed of a conical pin. In the locked state, the outer side of the pin contacts the outer side of the rotating shaft 200 through the conical surface to form a first friction point 1, and the pin contacts the locking part 102 through the conical surface to form a second friction point 2 and a third friction point 3. The locking part 102 is composed of a concave arc surface.

[0078] The tapered design increases the contact area between the locking element 400, the rotating shaft 200, and the locking part 102. The three-point friction forms a stable wedge force, improving the locking strength. At the same time, the tapered structure can quickly release the friction force through axial movement during unlocking, reducing the force required for unlocking and solving the problem of difficult unlocking of traditional friction plate clutches.

[0079] Specifically, in this embodiment, the conical pin is held between the locking part 102 and the locking end 201. At this time, the clockwise rotation of the rotating shaft 200 is affected by the friction of the first friction point 1 and the second friction point 2, and cannot rotate. The counterclockwise rotation of the rotating shaft 200 is affected by the friction of the first friction point 1 and the third friction point 3, and cannot rotate. The rotating shaft 200 is locked and fixed by the friction of the locking member 400 and the locking part 102.

[0080] In some other embodiments, the locking portion 102 is formed by an included angle, an arcuate surface, or a curved surface.

[0081] One end of the rotating shaft 200 is formed with a locking end 201, which passes through the clutch cavity 101. The outer surface of the locking end 201 contacts the locking member 400. The other end of the rotating shaft 200 is formed with a connecting end 202, which extends outward through the cover 700.

[0082] The locking end 201 bears the locking force in a concentrated manner, while the connecting end 202 facilitates connection with external equipment (such as camera lenses) to achieve reliable transmission between the rotating handle and the controlled component.

[0083] In the locked state (initial state), under the reset force of the elastic element 500, the locking element 400, locking part 102, and rotating shaft 200 are frictionally locked. At this time, the rotating shaft 200 cannot rotate, thus putting the clutch in the initial locked state.

[0084] In the unlocked state, when the control member 300 is pressed to apply pressure to the locking member 400, the locking member 400 moves axially to disengage from the friction lock with the locking part 102 and the rotating shaft 200. At this time, the rotating shaft 200 can rotate, so that the clutch is in the unlocked state.

[0085] In this embodiment, the specific unlocking and locking processes of the clutch are as follows:

[0086] Unlocking action: By manually pressing the control piece 300, the control piece 300 is pressed down and contacts the end face of the cone needle through the extrusion part 302, applying extrusion force to the cone needle, causing the pusher 800 to move away from the clutch cavity 101 along the push guide part 103, and the elastic member 500 is compressed. At this time, the cone needle is released from the wedge lock of the locking end 201, allowing the rotating shaft 200 to perform a 360-degree rotation action clockwise or counterclockwise.

[0087] Once the desired angle is reached, the pressure on the control element 300 is released. At this time, the reset element 600 provides a spring force to the control element 300 for reset, and the pressing part 302 of the control element 300 releases the pressure on the conical needle. Simultaneously, the elastic element 500 generates a reset spring force, causing the locking element 400 to lock the rotating shaft 200 again. Through the spring force of the elastic element 500, the locking element 400 can continuously apply a locking friction force to the rotating shaft 200. Thus, under the control of the inching press and release of the control element 300, the rotating shaft 200 can be instantly locked after rotating to any position, meeting the application scenario requirements of arbitrary angle adjustment and improving operational flexibility and user experience.

[0088] Example 2

[0089] In this embodiment, refer to Figures 8-10 A rotary handle includes a handle body 900 and a clutch. The handle body 900 has a receiving cavity 901 for installing the clutch. The handle body 900 is connected to a cover plate 1000 for pressing a clutch sleeve 100 via a mounting groove. The pressing end 301 of the control element 300 is exposed through the cover plate 1000. The handle body 900 has a mounting hole 902 communicating with the receiving cavity 901. The connecting end 202 of the rotating shaft 200 extends outward from the handle body 900 through the mounting hole 902. A wear-resistant sleeve 5 that matches the mounting hole 902 is sleeved on the connecting end 202.

[0090] The receiving cavity 901 and the cover plate 1000 are fixed to the clutch to ensure assembly stability; the pressing end 301 of the control component 300 is exposed on the handle surface for easy user operation; the wear-resistant sleeve 5 reduces the friction and wear between the rotating shaft 200 and the handle mounting hole 902, extends the service life of the rotating shaft 200, and ensures smooth rotation.

[0091] In practical implementation, the rotating handle in this embodiment is used for carrying the camera lens. The connecting end 202 of the rotating shaft 200 extends outward through the mounting hole 902 and connects to the camera lens via the connector 4 (e.g., a gimbal). Thus, when the control element 300 is pressed to unlock, the camera lens can rotate relative to the handle body 900, or the handle body 900 can rotate relative to the camera lens. This achieves control where the camera lens can rotate when the handle body 900 remains stationary, or the camera lens remains stationary when the handle rotates.

[0092] A positioning part 203 is provided between the locking end 201 and the connecting end 202. A first set of wear-resistant components is provided between the positioning part 203 and the cover 700. A second set of wear-resistant components is provided between the positioning part 203 and the wear-resistant sleeve 5. The first set of wear-resistant components and the second set of wear-resistant components are coaxially connected to the rotating shaft 200. Both the first set of wear-resistant components and the second set of wear-resistant components are composed of a gasket 6 and a wear-resistant plate 7.

[0093] Specifically, the gasket 6 is made of steel gasket 6. The first group of wear-resistant components and the second group of wear-resistant components each have two wear-resistant plates 7. The wear-resistant components adjust the gap through the gasket 6 and the wear-resistant plates 7 bear the friction, reducing the direct wear between the rotating shaft 200 and the cover 700 and the wear-resistant sleeve 5, reducing frictional resistance, and improving rotational accuracy; at the same time, it extends the life of key components, reduces the maintenance frequency, and improves the user experience.

[0094] In this embodiment, the cover 700 is connected to the bottom wall of the receiving cavity 901 by screws. Five conical pins are respectively paired with five locking parts 102 on the inner wall of the clutch cavity 101, and are paired with the pushing guide part 103 by the pushing member 800. The elastic member 500 is disposed between the cover 700 and the pushing member 800. The locking end 201 of the rotating shaft 200 passes through the clutch cavity 101, and the five conical pins are arranged on the outside of the locking end 201. Through the elastic force of the elastic member 500, The conical needle is held between the locking part 102 and the locking end 201. The clutch sleeve 100 is installed in the receiving cavity 901, and the bottom of the clutch sleeve 100 is paired with the cover 700. The connecting end 202 is paired with the mounting hole 902 through the wear-resistant sleeve 5, so that the rotation of the rotating shaft 200 can ensure the wear resistance and smooth rotation of the connecting end 202. The wear resistance and service life are further improved by connecting the first set of wear-resistant components and the second set of wear-resistant components to the upper and lower ends of the positioning part 203, respectively.

[0095] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A clutch, characterized in that: The device includes a clutch sleeve, a rotating shaft, and a control component. The clutch sleeve has a clutch cavity inside. The rotating shaft is rotatably connected to the clutch sleeve. One end of the rotating shaft passes through the clutch cavity, and the other end of the rotating shaft extends outward through the clutch cavity. The clutch cavity is provided with a locking component for wedging the rotating shaft, and an elastic component that can provide continuous locking to the rotating shaft is provided in the clutch cavity. The control component is installed on the clutch. One end of the control component passes through the clutch cavity, and the other end of the control component is exposed outside the clutch. A reset component is provided in the receiving cavity for providing continuous reset elastic force to the control component. A cover is connected to the bottom of the clutch, and a cover plate is provided on the clutch. When pressure is applied to the control component, the control component can apply a squeezing force to the locking component, causing the locking component to overcome the elastic force of the elastic component and move axially and release the wedging on the rotating shaft, so that the rotating shaft can rotate. When the pressure of the control component is released, the control component is reset by the elastic force of the reset component, and the locking component applies frictional force to the rotating shaft under the elastic force of the elastic component, thereby locking the rotating shaft.

2. The clutch according to claim 1, characterized in that: The inner wall of the clutch cavity is provided with a locking part for engaging the locking member. The locking member is installed in the locking part. Under the elastic force of the elastic member, the outer surface of the locking member is wedge-locked with the rotating shaft and the locking part through friction.

3. A clutch according to claim 2, characterized in that: The clutch cavity has a push guide portion at the end away from the control component. Push members are paired and arranged in the push guide portion. One end of the push member is connected to the locking member, and one end of the elastic member is in contact with the push member. The elastic member can apply a reset force to the push member, so that the push member pushes the locking member to move towards the control component along the push guide portion to form a lock.

4. A clutch according to claim 2, characterized in that: The clutch cavity has a pressing guide at the end near the control member. The control members are paired and installed in the pressing guide. The control members are exposed on the clutch through the pressing end through the pressing guide. The bottom end of the control member extends into the clutch cavity toward the locking member. The control member has a clearance hole inside for avoiding the rotating shaft. One end of the reset member contacts the rotating shaft, and the other end of the reset member contacts the bottom wall of the clearance hole.

5. A clutch according to claim 3, characterized in that: The cover is located at the bottom of the clutch groove. The elastic element is made of a spring, with one end of the spring connected to the inside of the cover and the other end of the spring connected to the pusher.

6. A clutch according to claim 2, characterized in that: The locking element is provided in two or more forms, and the number and position of the locking part are matched with the locking element, so that the two or more locking elements are distributed in a circumferential array within the locking part, and the outer surface of the locking element is in contact with the outer surface of the locking part and the rotating shaft.

7. A clutch according to claim 6, characterized in that: The locking element is composed of a tapered pin. In the locked state, the outer side of the pin contacts the outer side of the rotating shaft through the tapered surface to form a first friction point, and the pin contacts the locking part through the tapered surface to form a second friction point and a third friction point. The locking part is composed of an angled surface, an arc surface, or a curved surface.

8. A clutch according to any one of claims 1-6, characterized in that: One end of the rotating shaft is formed with a locking end, which passes through the clutch cavity and the outer surface of the locking end contacts the locking element. The other end of the rotating shaft is formed with a connecting end, which extends outward through the cover.

9. A rotary handle, characterized in that: The device includes a handle body and a clutch according to any one of claims 1-8. The handle body has a receiving cavity for installing the clutch. A cover plate is installed on the handle body and presses and limits the clutch. The pressing end of the control component is exposed through the cover plate. The handle body has a mounting hole communicating with the receiving cavity. The connecting end of the rotating shaft extends outward from the handle body through the mounting hole. A wear-resistant sleeve that matches the mounting hole is fitted on the connecting end.

10. A rotary handle according to claim 9, characterized in that: A positioning part is provided between the locking end and the connecting end. A first set of wear-resistant components is provided between the positioning part and the cover. A second set of wear-resistant components is provided between the positioning part and the wear-resistant sleeve. The first set of wear-resistant components and the second set of wear-resistant components are coaxially connected to the rotating shaft. Both the first set of wear-resistant components and the second set of wear-resistant components are composed of gaskets and wear-resistant plates.

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