A large torque actuator

Abstract

The utility model provides a kind of big torsion executor, comprising: shell;Driving motor;Variable speed gear set, variable speed gear set includes double gear and three gear, double gear is equipped with first gear and worm, three gear is equipped with second gear, third gear and fourth gear from top to bottom in order, first gear is engaged with the output shaft of driving motor, third gear is engaged with worm;Output transmission part, output transmission part is equipped with fifth gear, fifth gear is engaged with fourth gear;Emergency driving part, emergency driving part is provided with sixth gear, sixth gear is engaged with second gear;PCB board in shell, PCB board is equipped with multiple groups of pin, pin is used to connect driving motor, acquisition and transmission output transmission part's rotation position signal, and part pin is stretched out shell and is connected with client outside.The big torsion executor structure is simple, compact, and output torsion is big.

Description

Technical Field

[0001] This utility model relates to the field of new energy technology, specifically to a high-torque actuator. Background Technology

[0002] The charging gun lock actuator is a core component of a new energy vehicle charging system. Its performance directly affects the safety and reliability of the charging process. It is mainly used to lock and unlock the charging gun to the vehicle's charging port. In existing technologies, the charging gun lock actuator generally operates by outputting rotational force, which drives one or two locking rods to extend or retract through a converter head, thereby achieving the core requirements of locking and unlocking.

[0003] However, existing actuators are generally limited by motor torque design and transmission structure layout, resulting in insufficient output torque. With the development of new energy vehicle technology, some models require simultaneous locking and unlocking of both DC and AC charging ports. Existing actuators, due to torque limitations, cannot meet this requirement. To adapt to this need, the industry often uses a solution of separately configuring two actuators for control. This not only increases the overall vehicle manufacturing cost but also occupies more installation space and reduces system integration efficiency. Therefore, there is an urgent need for an actuator with high torque output to solve these technical pain points. Utility Model Content

[0004] The present invention aims to at least partially solve one of the technical problems in the aforementioned technologies. Therefore, the purpose of this invention is to provide a high-torque actuator that has a simple and compact structure and outputs high torque.

[0005] To achieve the above objectives, this utility model proposes a high-torque actuator, comprising: case; The drive motor is located inside the housing; The gear set located inside the housing includes a double gear and a triple gear. The double gear is provided with a first gear and a worm gear. The triple gear is provided with a second gear, a third gear and a fourth gear from top to bottom. The first gear meshes with the output shaft of the drive motor, and the third gear meshes with the worm gear. An output transmission component is disposed through the housing, and a fifth gear is provided on the output transmission component, which meshes with the fourth gear; An emergency drive component is installed through the housing, and the emergency drive component is provided with a sixth gear, which meshes with the second gear; The PCB board located inside the housing has multiple sets of pins. These pins are used to connect to the drive motor, collect and transmit the rotational position signals of the output transmission component or the emergency drive component, and some of the pins extend out of the housing to connect to the client.

[0006] According to this utility model, a high-torque actuator is proposed. Through optimized transmission structure design, a compact variable-speed gear set is formed by double and triple gears. After the output shaft of the drive motor meshes with the first gear, the transmission proceeds via a worm gear on the double gear and the third gear of the triple gear. Then, through a fourth gear, it meshes with the fifth gear of the output transmission component in multiple stages. Utilizing the gear reduction principle, the output torque is significantly amplified to meet the requirements of synchronous locking and unlocking of dual charging ports. Simultaneously, this actuator integrates the drive motor, variable-speed gear set, PCB board, and emergency drive component into the same housing. The emergency drive component directly meshes with the second gear of the triple gear via a sixth gear, eliminating the need for an additional transmission mechanism. The component layout is streamlined, with high functional integration, a simple overall structure, and the ability to guarantee high torque output.

[0007] In addition, the high-torque actuator proposed according to the above embodiments of this utility model may also have the following additional technical features: Optionally, the drive motor and the double gear are both arranged horizontally relative to the bottom surface of the housing, while the triple gear, the emergency drive component, and the output transmission component are all arranged vertically relative to the bottom surface of the housing.

[0008] Furthermore, the free end of the worm gear faces opposite directions to the output shaft of the drive motor, the triple gear is positioned close to the free end of the worm gear, the output transmission component is located between the triple gear and the first gear, and the triple gear is located between the output transmission component and the emergency drive component.

[0009] Optionally, the fourth gear and the fifth gear are helical gears.

[0010] Optionally, the second gear and the sixth gear are helical gears.

[0011] Optionally, it also includes a first sealing ring for sealing between the emergency drive component and the housing.

[0012] Optionally, a second sealing ring is also included, which is used to seal between the output transmission component and the housing.

[0013] Optionally, the worm gear is a multi-start worm gear. Attached Figure Description

[0014] Figure 1 An exploded view of a high-torque actuator according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a high-torque actuator according to an embodiment of the present utility model; Figure 3 for Figure 2 A structural diagram from another perspective; Figure 4 This is a partial structural schematic diagram of a high-torque actuator according to an embodiment of the present utility model; Figure 5 for Figure 4 A structural diagram from another perspective; Explanation of reference numerals in the attached figures: Housing 1, Upper Housing 11, Lower Housing 12, Drive Motor 2, Seventh Gear 21, Gear Set 3, Double Gear 31, First Gear 311, Worm Gear 312, Triple Gear 32, Second Gear 321, Third Gear 322, Fourth Gear 323, Output Transmission Component 4, Fifth Gear 41, Emergency Drive Component 5, Sixth Gear 51, PCB Board 6, Pin 61, First Sealing Ring 7, Second Sealing Ring 8. Detailed Implementation The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0015] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0016] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0017] The following is for reference. Figures 1-5 The implementation of the high-torque actuator proposed in the embodiments of this utility model will be described in detail.

[0018] The high-torque actuator according to an embodiment of the present invention includes: Casing 1; The drive motor 2 is located inside the housing 1; The gear set 3 located inside the housing 1 includes a double gear 31 and a triple gear 32. The double gear 31 is provided with a first gear 311 and a worm 312. The triple gear 32 is provided with a second gear 321, a third gear 322 and a fourth gear 323 from top to bottom. The first gear 311 meshes with the output shaft of the drive motor 2, and the third gear 322 meshes with the worm 312. An output transmission component 4 is installed in the housing 1. A fifth gear 41 is provided on the output transmission component 4. The fifth gear 41 meshes with the fourth gear 323. An emergency drive component 5 is installed in the housing 1. The emergency drive component 5 is provided with a sixth gear 51, which meshes with the second gear 321. The PCB board 6 located inside the housing 1 has multiple sets of pins 61. The pins 61 are used to connect the drive motor 2, collect and transmit the rotation position signal of the output transmission component 4 or the emergency drive component 5, and some pins 61 extend out of the housing 1 to connect with the client.

[0019] In other words, the core power source of this actuator is the internal drive motor 2. After the motor starts, it drives the first gear 311 on the double gear 31 to rotate. The worm gear 312 integrated into the double gear 31 further drives the third gear 322 of the triple gear 32 to rotate, and the power is transmitted to the triple gear 32 through this path. Subsequently, the triple gear 32 drives the output transmission component 4 that extends out of the housing 1 to rotate through its own fourth gear 323. The output transmission component 4 is the terminal component for the actuator to output force. Through the multi-stage gear meshing and the structural design of the worm gear 312, the torque output by the motor can be amplified step by step, so that the final output force of the actuator is sufficient to meet the working conditions of synchronous locking and unlocking of the dual charging ports. The emergency drive component 5 can be directly linked with the triple gear 32 through the sixth gear 51 to deal with various emergencies. The PCB board 6 undertakes the functions of motor control, acquisition of rotation position signals of the output transmission component 4 or the emergency drive component 5, and interface with external clients. This device achieves a high degree of integration of functional components, eliminating the need for the traditional dual-actuator configuration. A single actuator can drive both the DC and AC locking rods on the client side to lock, effectively saving installation space and reducing manufacturing costs. It also features a simplified structure and reliable operation.

[0020] The output shaft of the drive motor 2 can have a built-in seventh gear 21, which can be a helical gear or a spur gear. The second gear 321, third gear 322, and fourth gear 323 on the triple gear 32 can be integrally formed or coaxially spliced ​​together. The output end of the output transmission component 4 extends out of the housing 1 and can be configured to match the client. The diameter of the first gear 311 is larger than the diameter of the seventh gear 21, the diameter of the third gear 322 is larger than the diameter of the fourth gear 323, the diameter of the second gear 321 is larger than the diameter of the sixth gear 51, and the diameter of the fifth gear 41 is larger than the diameter of the fourth gear 323. The pins 61 can be divided into three groups. The first group of pins 61 can be directly connected to the drive motor 2 or connected to the drive motor 2 via wires. The rotation signal can be generated by the output transmission component 4 or the emergency drive component 5 through contact or non-contact means. The second set of pins 61 is conductive. The second set of pins 61 can be bent and extended to the side of the output transmission component 4 or the side of the emergency drive component 5. When the output transmission component 4 or the emergency drive component 5 rotates, it can contact and conduct the second set of pins 61, or cause the resistance of the PCB board 6 to change to generate a rotation position signal. For example, a contact can be set on the output transmission component 4 or the emergency drive component 5. The contact can rotate to a certain angle and contact the two pins 61 of the second set to form a connection. Of course, a switch can also be configured to make contact or sense the rotation of the output transmission component 4 or the emergency drive component 5 to determine the connection. The third set of pins 61 extends out of the housing 1 and can be directly plugged into the client, saving the client the need for additional wiring harnesses. The operating end of the emergency drive component 5 and the output end of the output transmission component 4 can extend one-to-one toward the top and bottom surfaces of the housing 1. The housing 1 can include an upper shell 11 and a lower shell 12.

[0021] Therefore, this actuator optimizes the transmission structure design, using a compact gear set 3 composed of a double gear 31 and a triple gear 32. After the output shaft of the drive motor 2 meshes with the first gear 311, the transmission is further enhanced by the worm gear 312 on the double gear 31 meshing with the third gear 322 of the triple gear 32. Then, the transmission continues through the fourth gear 323 meshing with the fifth gear 41 of the output transmission component 4 in multiple stages. By utilizing the gear reduction principle, the output torque is significantly amplified, meeting the requirements for synchronous locking and unlocking of the dual charging ports. Simultaneously, this actuator integrates the drive motor 2, the gear set 3, the PCB board 6, and the emergency drive component 5 into the same housing 1. The emergency drive component 5 directly meshes with the second gear 321 of the triple gear 32 via the sixth gear 51, eliminating the need for an additional transmission mechanism. This results in a streamlined component layout, high functional integration, a simple overall structure, and the ability to guarantee high torque output.

[0022] Optionally, the drive motor 2 and the double gear 31 are both horizontally arranged relative to the bottom surface of the housing 1, while the triple gear 32, the emergency drive component 5, and the output transmission component 4 are all vertically arranged relative to the bottom surface of the housing 1. Understandably, the horizontally arranged drive motor 2 and double gear 31 can be compactly arranged along the length of the housing 1, while the vertically arranged triple gear 32, emergency drive component 5, and output transmission component 4 are layered along the height of the housing 1 to avoid lateral interference between components. This combined horizontal and vertical arrangement makes the meshing path of the gear set 3 shorter and smoother, reducing energy loss during power transmission, while also reserving independent installation space for the PCB board 6. The overall structure is compact and well-organized, achieving a high degree of integration of drive, transmission, control, and emergency components within the limited volume of the housing 1. This ensures the transmission stability required for high torque output while effectively reducing the overall size of the actuator, adapting to the complex installation environment inside the charging gun.

[0023] Furthermore, the free end of the worm gear 312 faces opposite to the output shaft of the drive motor 2. The triple gear 32 is positioned close to the free end of the worm gear 312. The output transmission component 4 is located between the triple gear 32 and the first gear 311, and the triple gear 32 is located between the output transmission component 4 and the emergency drive component 5. Understandably, by maximizing the utilization of the housing 1 volume through precise orientation design, the actuator can integrate the three major functional modules of drive, transmission, and emergency response within a very small housing volume, perfectly adapting to the confined installation environment inside the charging gun without expanding the size of the housing 1. This allows the overall actuator to be more miniaturized while maintaining output torque. The PCB board 6 can be L-shaped and parallel to the bottom surface of the housing 1. The triple gear 32, the output transmission component 4, and the emergency drive component 5 can pass through the clearance holes on the PCB board 6, forming a rotatable connection with the inner wall of the housing 1.

[0024] Optionally, the fourth gear 323 and the fifth gear 41 are helical gears. Understandably, compared to spur gears, helical gears have the advantages of a larger meshing area and stronger transmission smoothness. Setting the fourth gear 323 and the fifth gear 41 as helical gears effectively adapts to the high load requirements of high torque output scenarios. When the two gears mesh, the tooth surface contact is progressive, which can disperse the instantaneous impact force during transmission, reduce gear wear, and extend the service life of components. At the same time, the meshing method of helical gears can reduce transmission noise, making the actuator operate more quietly when driving the locking and unlocking of the dual charging ports. Furthermore, the transmission efficiency of helical gears is higher than that of spur gears, which can reduce power loss in multi-stage transmission, ensuring that the torque output by the motor is amplified and fully transmitted to the output transmission component 4, meeting the power requirements of synchronous operation of the dual charging ports, and improving the overall performance of the actuator.

[0025] Optionally, the second gear 321 and the sixth gear 51 are helical gears. Understandably, emergency driving scenarios require high levels of smoothness and effortlessness in transmission. Designing the second gear 321 and the sixth gear 51 as helical gears makes the operation of the emergency driving component 5 more convenient and effortless. The meshing characteristics of helical gears avoid the jamming phenomenon that occurs when spur gears mesh, ensuring that when the emergency driving component 5 is turned in an emergency, power can be quickly and smoothly transmitted to the triple gear 32 for rapid unlocking. At the same time, the high load-bearing capacity of helical gears can cope with the instantaneous loads that may occur during emergency operations, preventing gear damage due to excessive force.

[0026] Optionally, a first sealing ring 7 is also included, which is used to seal the gap between the emergency actuator 5 and the housing 1. Understandably, if the gap between the emergency actuator 5 and the housing 1 is not sealed, dust, moisture, and other impurities can easily enter the housing 1, affecting the normal operation of precision components such as the gear set and PCB board 6. The first sealing ring 7 effectively blocks the path of impurities, improves the protection level of the actuator, and makes it suitable for complex working conditions such as outdoor charging and humid environments. At the same time, the first sealing ring 7 reduces frictional wear during the rotation of the emergency actuator 5, ensuring smooth operation during emergency operations and preventing component corrosion or jamming due to poor sealing.

[0027] Optionally, a second sealing ring 8 is also included, which is used to seal the output transmission component 4 and the housing 1. Understandably, the output transmission component 4, as the terminal component for the actuator to output power, has a clearance with the housing 1 that is one of the main channels for impurities to enter, and this component needs to rotate frequently to achieve locking and unlocking operations. The second sealing ring 8 effectively prevents dust, moisture, and external liquids from entering the housing 1, protecting the internal gear set 3 and PCB board 6 from corrosion and avoiding faults such as short circuits and gear jamming. At the same time, the second sealing ring 8 provides a certain degree of lubrication, reducing the frictional resistance between the output transmission component 4 and the housing 1 during rotation, improving power transmission efficiency, and reducing component wear.

[0028] Optionally, the worm gear 312 is a multi-start worm gear 312. Understandably, compared to a single-start worm gear 312, the core advantage of a multi-start worm gear 312 lies in its higher transmission ratio and resistance to self-locking. Applying it to this actuator enables efficient torque amplification. Combined with multi-stage gear meshing, the torque output by the motor can meet the synchronous locking and unlocking requirements of the dual charging ports. Simultaneously, the non-self-locking characteristic of the multi-start worm gear 312 significantly reduces the operational effort required for emergency unlocking, allowing users to easily rotate the emergency drive component 5 to unlock in unexpected situations, improving operational convenience. The tooth tip of the third gear 322 can be designed in a V-shape, with its concave portion matching the tooth root of the worm gear 312. This allows the three-gear 32 to fit more closely to the worm gear 312, increasing the contact area and ensuring meshing stability while reducing space requirements.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0034] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A high-torque actuator, characterized in that, include: case; The drive motor is located inside the housing; The gear set located inside the housing includes a double gear and a triple gear. The double gear is provided with a first gear and a worm gear. The triple gear is provided with a second gear, a third gear and a fourth gear from top to bottom. The first gear meshes with the output shaft of the drive motor, and the third gear meshes with the worm gear. An output transmission component is disposed through the housing, and a fifth gear is provided on the output transmission component, which meshes with the fourth gear; An emergency drive component is installed through the housing, and the emergency drive component is provided with a sixth gear, which meshes with the second gear; The PCB board located inside the housing has multiple sets of pins. These pins are used to connect to the drive motor, collect and transmit the rotational position signals of the output transmission component or the emergency drive component, and some of the pins extend out of the housing to connect to the client.

2. The high-torque actuator as described in claim 1, characterized in that, The drive motor and the double gear are both horizontally arranged relative to the bottom surface of the housing, while the triple gear, the emergency drive component, and the output transmission component are all vertically arranged relative to the bottom surface of the housing.

3. The high-torque actuator as described in claim 2, characterized in that, The free end of the worm gear faces opposite direction to the output shaft of the drive motor. The triple gear is positioned close to the free end of the worm gear. The output transmission component is located between the triple gear and the first gear. The triple gear is located between the output transmission component and the emergency drive component.

4. The high-torque actuator as described in claim 1, characterized in that, The fourth and fifth gears are helical gears.

5. The high-torque actuator as described in claim 1, characterized in that, The second gear and the sixth gear are helical gears.

6. The high-torque actuator as described in claim 1, characterized in that, It also includes a first sealing ring, which is used to seal between the emergency drive component and the housing.

7. The high-torque actuator as described in claim 1, characterized in that, It also includes a second sealing ring, which is used to seal between the output transmission component and the housing.

8. The high-torque actuator as described in claim 1, characterized in that, The worm gear is a multi-start worm gear.

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