Automobile actuator base

Abstract

The utility model relates to an automobile actuator base which comprises a base body, the base body is provided with a first transmission shaft hole, a second transmission shaft hole, a third transmission shaft hole, a micromotor installation groove, a first output gear positioning rib and a second output gear positioning rib, and the first output gear positioning rib and the second output gear positioning rib are both arc-shaped. And the two cylinders are symmetrically arranged in the same circle at intervals. According to the utility model, different circuit board assemblies (the potentiometer circuit board assembly, the Hall switch circuit board assembly and the 3D Hall circuit board assembly) can be integrated, so that the angle control mode switching of the actuator is realized, the size is small, the universality is high, the development cost is low, the development period is short, and the like; according to the utility model, the structural space layout is reasonable, the original control modes needing three different structural schemes are integrated on one actuator, the product development cost is greatly reduced, the product development period is greatly shortened, the product universality is stronger, and the actuator is suitable for platform popularization.

Description

Technical Field

[0001] The utility model relates to the field of automotive parts, in particular to an automotive actuator base. Background Art

[0002] Due to the increasing number of new energy vehicle automation devices, some high-torque actuators have emerged on the market. Some of these actuators use plastic gears. In order to ensure the strength of the gears, the actuators with plastic gears are often large in volume and cannot well meet the space adaptation requirements of customers; some use powder metallurgy gears. Since powder metallurgy gears are not resistant to salt spray, such products cannot meet the salt spray test requirements of customers.

[0003] The actuator angle control methods are generally divided into potentiometer control, Hall switch control, and 3D Hall chips, etc. Different customers will choose different actuator angle control methods according to their own needs. Currently, the actuators on the market cannot be compatible with the above three methods at the same time, and the compatibility is poor; if the angle control method needs to be switched, the actuator structure needs to be readjusted and a new mold needs to be opened. Since the actuator structure is relatively complex and contains many components, the cost of developing a new mold is high and the cycle is long. Summary of the Utility Model

[0004] To solve the above problems, the utility model provides an automotive actuator base that can be compatible with a potentiometer circuit board assembly, a Hall switch circuit board assembly, and a 3D Hall circuit board assembly at the same time.

[0005] The technical solution adopted by the utility model is: an automotive actuator base, including a base body, characterized in that: the base body is provided with a first transmission shaft hole, a second transmission shaft hole, a third transmission shaft hole, a micro-motor installation groove, a first output gear positioning rib, and a second output gear positioning rib. A first transmission shaft for installing a worm gear is arranged in the first transmission shaft hole, a second transmission shaft for installing a first transmission gear is arranged in the second transmission shaft hole, a third transmission shaft for installing a second transmission gear is arranged in the third transmission shaft hole, and a micro-motor is installed in the micro-motor installation groove; both the first output gear positioning rib and the second output gear positioning rib are arc-shaped and are symmetrically and spacedly arranged within the same circle; a worm meshing with the worm gear is arranged on the output shaft of the micro-motor.

[0006] Preferably, the base body is provided with a first circuit board positioning post and a second circuit board positioning post for cooperating with the circuit board assembly. The first circuit board positioning post and the second circuit board positioning post are diagonally arranged on the outer periphery of the first output gear positioning rib and the second output gear positioning rib.

[0007] Preferably, the base body is provided with a first circuit board hot riveting post and a second circuit board hot riveting post for cooperating with the circuit board assembly, and the first circuit board hot riveting post and the second circuit board hot riveting post are diagonally arranged on the outer periphery of the first output gear positioning rib and the second output gear positioning rib.

[0008] Preferably, the base body is provided with a first guiding hole and a second guiding hole for cooperating with the upper cover, and the first guiding hole and the second guiding hole are diagonally arranged.

[0009] Preferably, the periphery of the base body is continuously convex, a cavity is formed in the middle, and welding ribs are continuously arranged on the top of the convex part.

[0010] Preferably, the base body is provided with a connector pin welding end for the circuit board assembly to communicate with the external circuit.

[0011] Preferably, the base body is provided with a motor long pin welding end, a motor short pin welding end, a motor short pin insertion end, and a motor long pin insertion end for the micro motor to be electrically connected to the circuit board assembly.

[0012] Preferably, the outer side of the base body is provided with an outwardly extending connecting ear plate.

[0013] Preferably, the base body is provided with a lead-out groove for the wire to pass through.

[0014] Preferably, the first transmission gear meshes with the worm gear for transmission, the second transmission gear meshes with the first transmission gear for transmission, and the output gear meshes with the second transmission gear for transmission.

[0015] Preferably, reinforcing positioning ribs are provided at the roots of the first output gear positioning rib and the second output gear positioning rib.

[0016] The beneficial effects obtained by the present utility model are as follows: The present utility model can integrate different circuit board assemblies (a potentiometer circuit board assembly, a Hall switch circuit board assembly, and a 3D Hall circuit board assembly), so as to realize the switching of the actuator angle control mode, and has the advantages of small volume, strong versatility, low development cost, and short development cycle; The structural space layout of the present utility model is reasonable, so that the control modes originally requiring three different structural schemes are integrated into one actuator, greatly reducing the development cost and cycle of the product, and the product has stronger versatility and is suitable for platform promotion. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the overall structure of the actuator;

[0018] Figure 2 is Figure 1 the bottom view of

[0019] Figure 3 is Figure 2 the sectional view taken along A-A in the middle;

[0020] Figure 4 the structural schematic diagram of the base assembly of the present utility model;

[0021] Figure 5 the structural schematic diagram of the upper cover;

[0022] Figure 6 the structural schematic diagram of the potentiometer circuit board;

[0023] Figure 7 the structural schematic diagram of the Hall switch circuit board;

[0024] Figure 8 the structural schematic diagram of the 3D Hall circuit board;

[0025] Figure 9 is the exploded view of the actuating drive mechanism when the potentiometer control mode is adopted;

[0026] Figure 10 is the structural schematic diagram after removing the upper cover when the potentiometer control mode is adopted;

[0027] Figure 11 is the partial sectional view when the potentiometer control mode is adopted;

[0028] Figure 12 is the exploded view of the actuating drive mechanism when the Hall switch control mode is adopted;

[0029] Figure 13 is the structural schematic diagram after removing the upper cover when the Hall switch control mode is adopted;

[0030] Figure 14 is the schematic diagram of the positional relationship between the Hall switch and the ring magnet when the Hall switch control mode is adopted;

[0031] Figure 15 is the exploded view of the actuating drive mechanism when the 3D Hall control mode is adopted;

[0032] Figure 16 is the structural schematic diagram after removing the upper cover when the 3D Hall control mode is adopted;

[0033] Figure 17 is the partial sectional view when the 3D Hall control mode is adopted;

[0034] Figure 18 is the schematic diagram of the positional relationship between the 3D Hall chip and the cylindrical magnet when the 3D Hall control mode is adopted;

[0035] In the figure: 1. Automobile actuator base; 11. Base body; 12. Welding rib; 13. First transmission shaft hole; 14. Second transmission shaft hole; 15. Third transmission shaft hole; 161. First guiding hole; 162. Second guiding hole; 171. First circuit board positioning post; 172. Second circuit board positioning post; 181. First circuit board hot riveting post; 182. Second circuit board hot riveting post; 19. First positioning rib of output gear; 110. Second positioning rib of output gear; 111. Welding end of connector pin; 112. Welding end of long motor pin; 113. Welding end of short motor pin; 114. Plugging end of short motor pin; 115. Plugging end of long motor pin; 116. Reinforcing positioning rib; 117. Lead groove; 118. Connecting ear plate;

[0036] 2. Upper cover; 21. Welding groove; 22. Transmission shaft hole; 23. Guiding post; 24. First mating hole; 25. Second mating hole;

[0037] 3. Micro motor; 4. Circuit board assembly; 41. Circuit board positioning hole; 42. Circuit board hot riveting hole; 43. Circuit board welding hole;

[0038] 51. Worm; 52. Worm gear; 53. First transmission gear; 54. Second transmission gear; 55. Output gear; 56. First transmission shaft; 57. Second transmission shaft; 58. Third transmission shaft; 6. Star-shaped sealing ring; 72. Rotating shaft; 71. Potentiometer; 81. Hall switch; 82. Ring magnet; 91. 3D Hall chip; 92. Cylindrical magnet. Specific embodiments

[0039] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0040] As Figure 4As shown in the figure, the automotive actuator base 1 of the present utility model includes a base body 11. On the base body 11, there are provided a first transmission shaft hole 13, a second transmission shaft hole 14, a third transmission shaft hole 15, and an output gear positioning hole. A first transmission shaft 56 is provided in the first transmission shaft hole 13, a second transmission shaft 57 is provided in the second transmission shaft hole 14, and a third transmission shaft 58 is provided in the third transmission shaft hole 15. The first transmission shaft 56, the second transmission shaft 57, and the third transmission shaft 58 are made of steel shafts. A worm gear 52 is arranged on the first transmission shaft 56, a first transmission gear 53 is arranged on the second transmission shaft 57, and a second transmission gear 54 is arranged on the third transmission shaft 57. On the output gear positioning hole, there are provided an output gear first positioning rib 19 and an output gear second positioning rib 110 which are symmetrically arranged at intervals. The output gear 55 is arranged on the base body 1 through the first output gear positioning rib 19 and the second output gear positioning rib 110 (the first output gear positioning rib 19 and the second output gear positioning rib 110 cooperate with the annular positioning groove on the lower end surface of the output gear 55).

[0041] In this embodiment, both the first output gear positioning rib 19 and the second output gear positioning rib 20 are arc-shaped and are symmetrically arranged at intervals within the same circle. And at the roots of the first output gear positioning rib 19 and the second output gear positioning rib 20, there are provided strengthening positioning ribs 116. The strengthening positioning ribs 116 not only provide the structural strength of the first output gear positioning rib 19 and the second output gear positioning rib 20. By providing the first output gear positioning rib 19 and the second output gear positioning rib 20, it can provide support and positioning for the output gear 55; effectively ensuring that the base of the present utility model can be compatible with different circuit board assemblies 4 (potentiometer circuit board assemblies, Hall switch circuit board assemblies, and 3D Hall circuit board assemblies).

[0042] In this embodiment, the periphery of the base body 11 protrudes, and a cavity is formed in the middle. The micro-motor 3 and the circuit board assembly 4 are both fixedly installed in the cavity of the base body 11.

[0043] On the base body 11, there are provided circuit board positioning posts (a first circuit board positioning post 171 and a second circuit board positioning post 172) and circuit board thermal riveting posts (a first circuit board thermal riveting post 181 and a second circuit board thermal riveting post 182) that cooperate with the circuit board assembly 4, and a micro-motor installation groove for installing the micro-motor 3. On the base body 11, there are provided guiding holes (a first guiding hole 161 and a second guiding hole 162) that cooperate with the upper cover 2. At the top of the protruding part around the base body 11, there is a continuous welding rib 12.

[0044] In this embodiment, the first circuit board positioning column 171 and the second circuit board positioning column 172 are diagonally arranged on the periphery of the first output gear positioning rib 19 and the second output gear positioning rib 20, the first circuit board thermal riveting column 181 and the second circuit board thermal riveting column 182 are diagonally arranged on the periphery of the first output gear positioning rib 19 and the second output gear positioning rib 20; the first guide hole 161 and the second guide hole 162 are diagonally arranged on the base body 11.

[0045] Combination Figure 5 As shown, the upper cover 2 is provided with a welding groove 21, a transmission shaft hole 22, a guide column 23, a first matching hole 24 and a second matching hole 25, the welding rib 12 on the base body 11 cooperates with the welding groove 21 on the upper cover 2, and laser welding is adopted to form a sealed whole; the first transmission shaft 56, the second transmission shaft 57 and the third transmission shaft 58 are arranged in the transmission shaft hole 22 corresponding to the upper cover 2; the guide column 23 of the upper cover 2 is inserted into the guide hole (the first guide hole 161 and the second guide hole 162) corresponding to the base body 11; the first matching hole 24 and the second matching hole 25 form a stepped hole form, the outer diameter of the first matching hole 24 is smaller than the second matching hole 25, the upper end of the output gear 55 passes through the upper cover, the central shaft of the output gear 55 cooperates with the first matching hole 24, and a star-shaped sealing ring 6 is provided between the central shaft of the output gear 55 and the second matching hole 25 (which plays a sealing role and can position the output gear 55).

[0046] The base body 11 is provided with a connector pin welding end 111, a motor long pin welding end 112, a motor short pin welding end 113, a motor short pin plugging end 114 and a motor long pin plugging end 115. The connector pin welding end 111 is used to connect the circuit board assembly 4 with the external circuit, and the motor long pin welding end 112, the motor short pin welding end 113, the motor short pin plugging end 114 and the motor long pin plugging end 115 are used to connect the micro motor 3 with the circuit board assembly 4 circuit; the base body 11 is provided with a lead groove 117, and the leads of the circuit board assembly 4 and the micro motor 3 can pass through the lead groove 117 to be connected to the external circuit or equipment.

[0047] The outer side of the base body 11 is provided with a connecting ear plate 118 extending outward, so that the base body 11 can be fixedly installed with other components.

[0048] like Figures 1-18 As shown, the base of the utility model is used in automobile actuators, and is compatible with platform actuators with potentiometer control, Hall switch control and 3D Hall control operating angles, and is suitable for large torque (rated torque 2 to 4 N.m, stalled rotor 5 N.m or more) automobile actuator bases.

[0049] Combination Figures 1-3As shown in the figure, the automotive actuator applying the base of the present utility model includes an automotive actuator base 1 and an upper cover 2. The upper cover 2 is covered on the automotive actuator base 1. A micro-motor 3, a gear transmission assembly and a circuit board assembly 4 are sealed between the automotive actuator base 1 and the upper cover 2. Both the micro-motor 3 and the circuit board assembly 4 are fixedly arranged on the automotive actuator base 1. The circuit board assembly 4 is provided with a detection assembly for detecting the angular position of the micro-motor. The micro-motor 2 drives the gear transmission assembly to move.

[0050] When the potentiometer control mode is adopted, the circuit board assembly 4 is a potentiometer circuit board assembly, and a potentiometer 71 is integrated on the circuit board (such as Figure 6 ); when the Hall switch control mode is adopted, the circuit board assembly 4 is a Hall switch circuit board assembly, and a Hall switch 81 is integrated on the circuit board (such as Figure 7 ); when the 3D Hall control mode is adopted, the circuit board assembly 4 is a 3D Hall circuit board assembly, and a 3D Hall chip 91 is integrated on the circuit board (such as Figure 8 ).

[0051] Combined with Figure 3 As shown in the figure, in this embodiment, the gear transmission assembly includes a worm 51, a worm wheel 52, a first transmission gear 53, a second transmission gear 54 and an output gear 55. The worm 51 is connected to and drives the output shaft of the micro-motor 2. The worm 51 is in meshing transmission with the large teeth of the worm wheel 52. The small teeth of the worm wheel 52 are in meshing transmission with the large teeth of the first transmission gear 53. The small teeth of the first transmission gear 53 are in meshing transmission with the large teeth of the second transmission gear 54. The small teeth of the second transmission gear 54 are in meshing transmission with the output gear 55.

[0052] In this embodiment, the output gear 55 includes a plastic central rotating shaft and a powder metallurgy tooth ring arranged on the plastic central rotating shaft. The assembly form of the plastic output shaft and the powder metallurgy gear can improve the salt spray resistance of the product, reduce costs and reduce the weight of the product. The plastic central rotating shaft is connected to and drives the powder metallurgy tooth ring through a spline hole. The lower shaft hole of the plastic central rotating shaft is a D-shaped hole; annular positioning grooves are symmetrically arranged at intervals on the lower end face of the plastic central rotating shaft.

[0053] In this embodiment, the small teeth of the second transmission gear 54 are made of powder metallurgy gears, and the large gears are made of plastic gears. The combination form of metal gears and plastic gears is convenient for improving the gear strength, reducing the weight of the product and reducing costs.

[0054] Combined with Figures 9-11As shown in the figure, when the potentiometer control mode is adopted, the detection component includes a rotating shaft 71 and a potentiometer 72. The rotating shaft 71 is arranged at the lower end of the central rotating shaft of the output gear 55; the potentiometer 72 is arranged on the circuit board assembly 4 and is directly below the rotating shaft 71. The micro-motor 3 rotates, drives the first transmission gear 53 and the second transmission gear 54 to rotate synchronously through the worm 51 and the worm gear 52, and further drives the output gear 55 to rotate; the output gear 55 drives the rotating shaft 71 at the lower end to rotate, and the rotation drives the potentiometer 72 to rotate. The potentiometer 72 directly feeds back the rotation angle of the output gear 55 to the ECU.

[0055] Combined with Figures 12-14 As shown in the figure, when the Hall switch control mode is adopted, the detection component includes an annular magnet 82 and a Hall switch 81. The annular magnet 82 is arranged on the output shaft of the micro-motor 3, and the annular magnet 82 is radially magnetized; the Hall switch 81 is arranged on the circuit board assembly 4 and is directly below the annular magnet 82. The micro-motor 3 rotates, drives the annular magnet 82 on the output shaft to rotate, and the Hall switch 81 below the annular magnet 82 senses the magnetic field change and counts the number of turns of the worm 51 to feed back the running angle to the ECU.

[0056] The length of the metal transmission shaft of the micro-motor 3 is 18 - 22 mm. The transmission shaft of the micro-motor 3 is in interference fit with the worm 51 (the length of the worm is 8 - 15 mm). The Hall switch 81 is 1.5 - 3.5 mm thick; the annular magnet 82 is in interference fit with the transmission shaft of the micro-motor 3. After the fit, the extension of the transmission shaft of the micro-motor 3 is 1 - 4 mm (when designing, the transmission shaft of the micro-motor 3 is long enough to ensure that it can pass through the worm 51 and the annular magnet 82 at the same time, ensuring that there is enough assembly space for the annular magnet 82 on the transmission shaft of the micro-motor 3); the distance D1 between the circuit board assembly 4 and the axis of the micro-motor 3 is 4 - 9 mm, and the gap between the Hall switch 81 and the annular magnet 82 is 1 mm - 8 mm.

[0057] Combined with Figures 15-18 As shown in the figure, when the 3D Hall control mode is adopted, the detection component includes a cylindrical magnet 92 and a 3D Hall chip 91. The cylindrical magnet 92 is arranged at the lower end of the central rotating shaft of the output gear 55, and the cylindrical magnet 92 is axially magnetized; the 3D Hall chip 91 is arranged on the circuit board assembly 4 and is directly below the cylindrical magnet 92. The micro-motor 3 rotates, drives the first transmission gear 53 and the second transmission gear 54 to rotate synchronously through the worm 51 and the worm gear 52, and further drives the output gear 55 to rotate; the output gear 55 drives the cylindrical magnet 92 at the lower end to rotate, and the 3D Hall chip 91 below the cylindrical magnet 92 senses the magnetic field change and directly feeds back the rotation angle of the output gear 55 to the ECU.

[0058] The gap D2 between the 3D Hall chip 91 and the cylindrical magnet 92 is 0.8 mm to 5 mm. A transmission shaft hole is provided on the automotive actuator base 1, and the transmission shaft hole is in interference fit with the transmission shaft. The worm wheel 51 and the transmission gears (the first transmission gear 53 and the second transmission gear 54) rotate along the transmission shaft (the first transmission shaft 56 and the second transmission shaft 57). To avoid interference between the gears and the circuit board assembly 4, the distances between the positioning surfaces of the worm wheel 52 and the transmission gears (the first transmission gear 53 and the second transmission gear 54) and the circuit board assembly 4 need to be greater than 0.3 mm; the end face gaps between the worm wheel 52 and the transmission gears (the first transmission gear 53 and the second transmission gear 54), and between the transmission gears (the first transmission gear 53 and the second transmission gear 54) and the output gear 55 are greater than 0.3 mm.

[0059] Here, it should be noted that the description of the above technical solution is exemplary. This specification can be embodied in different forms and should not be construed as limited to the technical solutions described herein. On the contrary, providing these descriptions will make the disclosure of the present invention complete and thorough, and will fully convey the scope disclosed in this specification to those skilled in the art. In addition, the technical solution of the present invention is only limited by the scope of the claims.

[0060] Finally, it should be pointed out that the above embodiments are only relatively representative examples of the present invention. Obviously, the present invention is not limited to the above embodiments and there can be many variations. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention should be considered as belonging to the protection scope of the present invention.

Claims

1. An automobile actuator base, comprising a base body, characterized in that: The base body is provided with a first transmission shaft hole, a second transmission shaft hole, a third transmission shaft hole, a micromotor mounting groove, a first output gear positioning rib and a second output gear positioning rib; the first transmission shaft hole is provided with a first transmission shaft for mounting a worm gear; the second transmission shaft hole is provided with a second transmission shaft for mounting a first transmission gear; the third transmission shaft hole is provided with a third transmission shaft for mounting a second transmission gear; a micromotor is installed in the micromotor mounting groove; the first output gear positioning rib and the second output gear positioning rib are both arc-shaped and symmetrically spaced in the same circle; the output shaft of the micromotor is provided with a worm that meshes with the worm gear for transmission.

2. The automotive actuator base according to claim 1, characterized in that: The base body is provided with a first circuit board positioning column and a second circuit board positioning column matched with the circuit board assembly, and the first circuit board positioning column and the second circuit board positioning column are diagonally arranged on the periphery of the first output gear positioning rib and the second output gear positioning rib.

3. The automotive actuator base according to claim 1, characterized in that: The base body is provided with a first circuit board heat riveting column and a second circuit board heat riveting column that cooperate with the circuit board assembly. The first circuit board heat riveting column and the second circuit board heat riveting column are diagonally arranged on the periphery of the first output gear positioning rib and the second output gear positioning rib.

4. The automotive actuator base according to claim 1, characterized in that: The base body is provided with a first guide hole and a second guide hole matched with the upper cover, and the first guide hole and the second guide hole are arranged diagonally.

5. The automotive actuator base according to claim 1, characterized in that: The base body is continuously raised around and a cavity is formed in the middle. The top of the raised part is provided with continuously arranged welding ribs.

6. The automotive actuator base according to claim 1, characterized in that: The base body is provided with a connector pin welding end for connecting the circuit board assembly with an external circuit.

7. The automotive actuator base according to claim 1, characterized in that: The base body is provided with a motor long pin welding end, a motor short pin welding end, a motor short pin plugging end and a motor long pin plugging end for connecting the micromotor with the circuit board assembly circuit.

8. The automotive actuator base according to claim 1, characterized in that: A connecting ear plate extending outward is arranged on the outer side of the base body.

9. The automotive actuator base according to claim 1, characterized in that: The base body is provided with a lead groove for the lead wire to pass through.

10. The automotive actuator base according to claim 1, characterized in that: The roots of the first output gear positioning rib and the second output gear positioning rib are both provided with reinforcing positioning ribs.

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