Actuator with novel clutch function
By designing an actuator with a new clutch function, using the combination of the first clutch and the second clutch, using a C-ring and a one-way bearing, the problem of the clutch not being able to achieve different forward and reverse torque in the prior art is solved, and lower noise and more flexible torque control are achieved.
Patent Information
- Application Number
- CN202422199293.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The clutch gear structures of existing electronic actuators or gearboxes cannot achieve different functions of forward and reverse torque, and there are problems with torque reduction and noise.
An actuator with a new type of clutch function is designed, and the clutch function is realized through the first clutch and the second clutch. A C-ring is used to replace the traditional crown structure, and a one-way bearing is designed to achieve different functions of forward and reverse torque.
The function of different forward and reverse torque is realized, which reduces noise, saves costs, and avoids excessive torque attenuation.
Smart Images
Figure CN222991974U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of transmission, and specifically to an actuator with a novel clutch function. Background Art
[0002] At present, for the electronic actuators or speed reducers used in the market, there are many types of clutch gear structures inside them. However, basically, the torques in the forward and reverse rotations are the same, and the function of different torques in the forward and reverse rotations cannot be achieved.
[0003] The existing device (corona structure clutch plate) realizes the clutch function through the cooperation of rectangular or conical bosses and pits. This function has the defect of torque reduction after the parts are worn. At the same time, there will be a relatively large clutch impact sound after the clutch, and the sound quality is relatively poor.
[0004] The existing device (silent structure clutch plate) realizes the clutch through the friction between the C-shaped elastic sheet and the counterpart. This structure can achieve a silent effect, but the function of different torques in the forward and reverse rotations cannot be achieved. Content of the Utility Model
[0005] Purpose of the utility model: To provide an actuator with a novel clutch function to solve the above problems existing in the prior art.
[0006] Technical solution: An actuator with a novel clutch function includes:
[0007] An input part, a clutch part meshing and driving with the input part, and an output gear meshing and driving with the clutch part;
[0008] The clutch part includes:
[0009] A first clutch member, including a first large gear provided with a first receiving groove, a first small gear provided with a first convex block, and a first C-shaped ring disposed in the receiving groove and sleeved on the first convex block;
[0010] A second clutch member, including a second large gear provided with a second receiving groove, a one-way bearing sleeved on the second receiving groove, a second small gear provided with a second rod body, a second C-shaped ring sleeved on the second rod body, and a third C-shaped ring sleeved on the second C-shaped ring;
[0011] The one-way bearing is disposed in the second receiving groove.
[0012] The utility model completes the clutch function of the whole device by designing a first clutch part and a second clutch part. The two clutch torques are distributed on two different gears, and the small-torque clutch gear structure is at the previous stage of the large-torque clutch gear structure, so that the metal spring parts inside the clutch can be shared, saving costs. The traditional coronal clutch plate is replaced by a C-ring, reducing noise. At the same time, by designing a one-way bearing in the second clutch part, the forward and reverse torques of the whole device are different.
[0013] In a further embodiment, the input part includes a worm and a worm wheel adapted to the worm;
[0014] An input gear is provided below the worm wheel.
[0015] In a further embodiment, the input gear meshes with a first large gear.
[0016] In a further embodiment, the first small gear meshes with a second large gear.
[0017] In a further embodiment, the second small gear meshes with an output gear.
[0018] Beneficial effects: The utility model discloses an actuator with a novel clutch function. The utility model completes the clutch function of the whole device by designing a first clutch part and a second clutch part. The two clutch torques are distributed on two different gears, and the small-torque clutch gear structure is at the previous stage of the large-torque clutch gear structure, so that the metal spring parts inside the clutch can be shared, saving costs. The traditional coronal clutch plate is replaced by a C-ring, reducing noise. At the same time, by designing a one-way bearing in the second clutch part, the forward and reverse torques of the whole device are different. Description of the Drawings
[0019] Figure 1 is a schematic structural diagram of the utility model.
[0020] Figure 2 is a schematic structural diagram of the first clutch part of the utility model.
[0021] Figure 3 is a schematic structural diagram of the second clutch part of the utility model.
[0022] Reference numerals are:
[0023] 1, worm; 2, worm wheel;
[0024] 3, first clutch part; 31, first small gear; 311, first convex block; 32, first C-ring; 33, first large gear;
[0025] 4. The second clutch member; 41. The second pinion gear; 411. The second rod; 42. The second C-ring; 43. The one-way bearing; 44. The second large gear;
[0026] 5. The output gear; Detailed implementation manners
[0027] This application relates to an actuator with a new clutch function, which will be explained in detail through specific implementation manners below.
[0028] After the applicant's research:
[0029] 1. Currently, for the electronic actuators or speed reducers used in the market, there are many types of clutch gear structures inside, but basically the torques in forward and reverse rotations are the same, and the function of different torques in forward and reverse rotations cannot be achieved.
[0030] 2. The existing device (corona structure clutch version) realizes the clutch function through the cooperation of rectangular or conical bosses and pits. This function has the defect of torque reduction after the parts are worn, and there will be a relatively large clutch impact sound after clutch, and the sound quality is relatively poor.
[0031] 3. The existing device (silent structure clutch version) realizes the clutch through the friction between the C-type elastic piece and the counterpart. This structure can achieve a silent effect, but it cannot achieve the function of different torques in forward and reverse rotations.
[0032] 4. The corona structure will have a reduction in clutch torque at high temperatures, and at the same time, the wear rate of parts is accelerated at high temperatures, resulting in the clutch torque not meeting the performance requirements, and it is possible that the clutch torque is less than the working torque during operation, resulting in function failure or continuous triggering of the clutch rattling impact sound.
[0033] 5. The corona structure has too large a clutch torque at low temperatures and cannot trigger the clutch, thus losing the function of protecting the gear by the clutch. Forced clutch will cause the gear to break and make the product fail.
[0034] However, the present invention
[0035] Converts the sliding friction force into torque, effectively reducing the noise generated by the clutch and avoiding the problem of excessive torque attenuation after long-term use;
[0036] Is not limited by the space structure, can obtain a relatively large clutch torque range, and is easier to control.
[0037] When the customer has a push to run function, the small clutch torque function can be used at this stroke to achieve a follow-up effect and improve the customer experience; at the same time, a large clutch torque can be used at another stroke to avoid the risk of other accessories being thrown off.
[0038] When making sharp turns or other maneuvers, it can effectively prevent clutch triggering in the upward direction of the large clutch torque function, and at the same time, it will not cause the internal gear train to break due to excessive external force.
[0039] A one-way structure is adopted to achieve frictional transmission in one direction.
[0040] Two clutch torque distribution designs are on two different gears, and the small-torque clutch gear structure is at the previous stage of the large-torque clutch gear structure, so that the metal shrapnel parts inside the clutch can be shared, saving costs and verification development cycle.
[0041] This structure is more effective for worm and worm gear drive systems with self-locking functions.
[0042] An actuator with a new clutch function, comprising:
[0043] An input part, a clutch part meshing and driving with the input part, and an output gear 5 meshing and driving with the clutch part;
[0044] The clutch part includes:
[0045] A first clutch member 3, including a first large gear 33 provided with a first receiving groove, a first small gear 31 provided with a first convex block 311, and a first C-ring 32 disposed in the receiving groove and sleeved on the first convex block 311;
[0046] A second clutch member 4, including a second large gear 44 provided with a second receiving groove, a one-way bearing 43 sleeved on the second receiving groove, a second small gear 41 provided with a second rod body 411, a second C-ring 42 sleeved on the second rod body 411, and a third C-ring 45 sleeved on the second C-ring 42;
[0047] The one-way bearing 43 is disposed in the second receiving groove.
[0048] The utility model completes the clutch function of the whole device by designing the first clutch member 3 and the second clutch member 4. Two clutch torque distribution designs are on two different gears, and the small-torque clutch gear structure is at the previous stage of the large-torque clutch gear structure, so that the metal shrapnel parts inside the clutch can be shared, saving costs. By replacing the traditional crown-shaped clutch plate with a C-ring, the noise is reduced. At the same time, by designing a one-way bearing 43 in the second clutch member 4, the forward and reverse torques of the whole device are different.
[0049] The input part includes a worm 1 and a worm wheel 2 adapted to the worm 1;
[0050] An input gear is provided below the worm wheel 2.
[0051] The input gear meshes with the first large gear 33.
[0052] The first pinion gear 31 meshes with the second large gear 44.
[0053] The second pinion gear 41 meshes with the output gear 5.
[0054] Working principle description: Power is input to the worm 1. The worm 1 drives the worm wheel 2 to rotate, thereby driving the input gear to rotate, then driving the first large gear 33 to rotate, driving the first C-ring 32 to rotate, driving the first convex block 311 to rotate, driving the first pinion gear 31 to rotate, driving the second large gear 44 to rotate, driving the one-way bearing 43 to rotate, driving the second C-ring 42 to rotate, driving the second rod body 411 to rotate, driving the second pinion gear 41 to rotate, and then driving the output gear 5 to rotate in the first direction to complete the work;
[0055] The one-way bearing 43 is in a locked state when the output gear 5 rotates in the first direction.
[0056] When an external force in the first direction is applied to the output gear 5, due to the self-locking structure of the worm wheel 2 and the worm 1, the gears on the input part, the clutch part, and the output gear 5 do not rotate relative to each other. As the external load increases, and with the action of the one-way bearing 43 (the resistance in this direction is infinite), the gears on the second clutch part 4 do not rotate relative to each other. At this time, the first clutch part 3 will be triggered until the friction between the first C-ring 32 and the first receiving groove is overcome, realizing the large clutch torque function and preventing other mechanisms connected to the actuator from being disengaged by external forces.
[0057] When an external force in the second direction is applied to the output gear 5, due to the self-locking structure of the worm wheel 2 and the worm 1, the gears on the input part, the clutch part, and the output gear 5 do not rotate relative to each other. As the external load increases, the second clutch part 4 will be triggered. The resistance of the one-way bearing 43 in this direction is infinitely small, so that the second pinion gear 41 and the second large gear 44 on the second clutch part 4 rotate relative to each other, realizing the small clutch torque function and the follow-up function, and improving the user experience.
[0058] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the protection scope of the present invention.
Claims
1. An actuator with a novel clutch function, comprising: An input portion, a clutch portion meshing with the input portion for transmission, and an output gear (5) meshing with the clutch portion for transmission; Characterized in that the clutch portion comprises: A first clutch member (3) comprises a first large gear (33) provided with a first receiving groove, a first small gear (31) provided with a first protrusion (311), and a first C-shaped ring (32) arranged in the receiving groove and sleeved on the first protrusion (311); The second clutch member (4) comprises a second large gear (44) provided with a second receiving groove, a one-way bearing (43) sleeved on the second receiving groove, a second small gear (41) provided with a second rod body (411), a second C-shaped ring (42) sleeved on the second rod body (411), and a third C-shaped ring (45) sleeved on the second C-shaped ring (42); The one-way bearing (43) is arranged in the second accommodating groove.
2. The actuator with a novel clutch function according to claim 1 is characterized in that: The input portion comprises a worm (1) and a worm wheel (2) adapted to the worm (1); An input gear is provided below the worm gear (2).
3. The actuator with a novel clutch function according to claim 2 is characterized in that: The input gear is meshed with the first large gear (33).
4. The actuator with a novel clutch function according to claim 3 is characterized in that: The first small gear (31) is meshed with the second large gear (44).
5. The actuator with a novel clutch function according to claim 4 is characterized in that: The second pinion gear (41) meshes with the output gear (5).