Electronic parking actuating mechanism

Abstract

The invention discloses an electronic parking actuating mechanism, which comprises a shell, a first pin, a second pin, a third pin and a fourth pin, an opening is formed in the upper end of the shell, and the shell is provided with at least two first pins; the upper end of the motor is provided with at least two second pins, and each second pin is electrically connected with one first pin; the end cover is connected with the shell; the transmission gear set is arranged in the shell; a sun gear set including: a second disc gear and a second center pinion connected to each other; and the second central pinion is in transmission connection with the planetary gear mechanism. Through the application of the electronic parking executing mechanism, the transmission gear set and the planetary gear set are uniformly positioned through the end cover, the motor is accurately positioned through the enclosure bulkhead on the end cover, the transmission precision of the executing mechanism is improved, meanwhile, noise is reduced, and the whole mechanism is more reliable and durable; and the assembly process of the executing mechanism is simplified, and the required material cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile electronic parking technology, and in particular to an electronic parking actuator. Background Art

[0002] Modern car consumers pay more and more attention to the convenience and comfort of driving cars. As the core part of the electronic parking system, the electronic parking actuator just meets the needs of such consumers. When the driver presses the electronic parking button, the electronic parking actuator will receive the signal and then drive the vehicle's braking system to generate parking braking force through motor drive or other driving methods.

[0003] The electronic parking actuator in the prior art has high material cost and a complicated assembly process. Meanwhile, the unstable transmission of the motor will affect the driver's comfort and further affect the driver's driving experience. Summary of the invention

[0004] In view of this, in order to solve the above problems, the object of the present invention is to provide an electronic parking actuator, comprising:

[0005] A housing, wherein an opening is formed at the upper end of the housing, wherein a first groove and a second groove are adjacent to each other in the interior of the opening, and at least two first pins are arranged on the housing;

[0006] A motor, the motor is installed in the first groove, the upper end of the motor has a first output shaft, the first output shaft is connected to a motor gear, the upper end of the motor is provided with at least two second pins, each of the second pins is electrically connected to one of the first pins;

[0007] An end cover, the end cover is connected to the shell and is used to close the open port;

[0008] A transmission gear set, the transmission gear set is arranged in the housing, and the transmission gear set comprises: a first disc gear and a first central pinion gear connected to each other, the first disc gear is in transmission connection with the motor gear;

[0009] A sun gear set, the sun gear set comprising: a second plate gear and a second central pinion gear connected to each other, the second plate gear being drivingly connected to the first central pinion gear;

[0010] a planetary gear mechanism, wherein the second central pinion is drivingly connected to the planetary gear mechanism;

[0011] Wherein, the sun gear set and the planetary gear mechanism are sequentially arranged in the second groove from top to bottom;

[0012] A first fixed shaft is disposed in the housing, and the transmission gear set is rotatably disposed on the first fixed shaft;

[0013] A second fixed shaft is arranged on the inner side of the end cover, and the sun gear set is rotatably arranged on the second fixed shaft.

[0014] In another preferred embodiment, the inner side of the end cover protrudes downward to form a surrounding wall, and the first output shaft and the motor gear are both arranged to extend into the inner side of the surrounding wall.

[0015] In another preferred embodiment, the surrounding wall and the motor are arranged in a transitional fit.

[0016] In another preferred embodiment, a hole is opened on the housing, and the first fixed shaft passes through the transmission gear set and extends into the hole.

[0017] In another preferred embodiment, the planetary gear mechanism includes: a planetary carrier and a planetary gear set, a plurality of planetary shafts are arranged at one end of the planetary carrier, the planetary gear set is arranged on the planetary shafts, and a second output shaft is arranged at the other end of the planetary carrier, the second output shaft passes through the housing and is connected to an external braking system.

[0018] In another preferred embodiment, the planetary gear set includes: a plurality of planetary gears, each of the planetary gears is connected to a planetary shaft, the plurality of planetary gears are arranged in sequence along the circumference of the planetary carrier, and the plurality of planetary gears are connected to the second center pinion.

[0019] In another preferred embodiment, the two second pins are arranged in an L-shaped structure, and each of the second pins includes: a long part and a short part connected to each other, one end of the short part is arranged at the upper end of the motor, and the other end of the short part is extended upward, one end of the long part is connected to the other end of the short part, and the other end of the long part is extended horizontally outward.

[0020] In another preferred embodiment, a mounting seat is provided on the outer side of the shell, and the mounting seat is arranged close to the first groove, and each of the first pins includes: an extension portion and a foot portion connected to each other, the extension portion is arranged in an L-shaped structure, the extension portion is electrically connected to the second pin, the extension portion is arranged in the mounting seat, and the lower end of the mounting seat has a socket, and the foot portion is arranged in the socket.

[0021] In another preferred embodiment, the first disc gear and the first center pinion gear are integrally injection molded, and the second disc gear and the second center pinion gear are insert-molded.

[0022] Due to the adoption of the above technical solution, the present invention has the following positive effects compared with the prior art:

[0023] Through the application of the present invention, an electronic parking actuator is provided, in which the transmission gear set and the planetary gear set are uniformly positioned by the end cover, and the motor is accurately positioned by the surrounding wall on the end cover, thereby improving the transmission accuracy of the electronic parking actuator and reducing the occurrence of noise, making the mechanism as a whole more reliable and durable; at the same time, the assembly process of the electronic parking actuator is simplified and the required material cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 An exploded view of an electronic parking actuator of the present invention;

[0025] Figure 2 A connection diagram of a first pin and a second pin of an electronic parking actuator of the present invention;

[0026] Figure 3 is a cross-sectional view of an electronic parking actuator of the present invention;

[0027] Figure 4 It is a schematic diagram of an end cover of an electronic parking actuator of the present invention;

[0028] Figure 5 The figure is an overall structural diagram of an electronic parking actuator of the present invention.

[0029] In the attached figure:

[0030] 100, housing; 110, first groove; 120, second groove; 130, first pin; 140, first fixed shaft; 150, mounting seat; 200, motor; 210, second pin; 220, first output shaft; 300, motor gear; 400, end cover; 410, surrounding wall; 420, second fixed shaft; 500, transmission gear set; 510, first disc gear; 520, first center pinion; 600, sun gear set; 610, second disc gear; 620, second center pinion; 700, planetary gear mechanism; 710, planetary gear set; 711, planetary gear; 720, planetary carrier; 721, second output shaft. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it is necessary to understand that the orientation or position relationship indicated by the terms such as "upper", "lower", "left", "right", "inside", "outside", "front", "back", "lateral" and "vertical" is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or original referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] It should be specially explained that the “horizontal” and “vertical” in the present invention are used to illustrate the approximate positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0034] like Figures 1 to 5 1 , an electronic parking actuator of a preferred embodiment is shown, comprising: a housing 100, wherein an open mouth is formed at the upper end of the housing 100, wherein the interior of the open mouth has a first groove 110 and a second groove 120 adjacent to each other, and at least two first pins 130 are arranged on the housing 100; a motor 200, wherein the motor 200 is installed in the first groove 110, wherein the upper end of the motor 200 has a first output shaft 220, wherein the first output shaft 220 is connected to a motor gear 300, wherein at least two second pins 210 are arranged at the upper end of the motor 200, wherein each second pin 210 is electrically connected to a first pin 130; an end cover 400, wherein the end cover 400 is connected to the housing 100, and the end cover 400 is used to close the open mouth; a transmission gear set 500, wherein the transmission gear set 500 is arranged in the housing 100, and the transmission gear set 500 comprises: The first disc gear 510 and the first center pinion 520 are connected, and the first disc gear 510 is transmission connected to the motor gear 300; the sun gear set 600, the sun gear set 600 includes: a second disc gear 610 and a second center pinion 620 connected to each other, and the second disc gear 610 is transmission connected to the first center pinion 520; the planetary gear mechanism 700, and the second center pinion 620 is transmission connected to the planetary gear mechanism 700; wherein, the sun gear set 600 and the planetary gear mechanism 700 are sequentially arranged in the second groove 120 from top to bottom; a first fixed shaft 140 is arranged in the housing 100, and the transmission gear set 500 is rotatably arranged on the first fixed shaft 140; a second fixed shaft 420 is arranged on the inner side of the end cover 400, and the sun gear set 600 is rotatably arranged on the second fixed shaft 420.

[0035] Furthermore, as a preferred embodiment, a hole is opened on the housing 100, and the first fixed shaft 140 passes through the transmission gear set 500 and extends into the hole.

[0036] Further, as a preferred embodiment, the planetary gear mechanism 700 includes: a planetary carrier 720 and a planetary gear set 710, a plurality of planetary shafts are arranged at one end of the planetary carrier 720, the planetary gear set 710 is arranged on the planetary shafts, and a second output shaft 721 is arranged at the other end of the planetary carrier 720, and the second output shaft 721 passes through the housing 100 and is connected to an external braking system.

[0037] Further, as a preferred embodiment, the planetary gear set 710 includes: a plurality of planetary gears 711, each planetary gear 711 is connected to a planetary shaft, the plurality of planetary gears 711 are sequentially arranged along the circumference of the planet carrier 720, and the plurality of planetary gears 711 are connected to the second central pinion 620. Further, the number of the planetary gears 711 is preferably three or four.

[0038] Further, as a preferred embodiment, the planetary gear 711 can be fixedly set on the planetary shaft. When the motor 200 is running, the first output shaft 220 drives the motor gear 300 to rotate, the motor gear 300 drives the transmission gear set 500 to rotate, the transmission gear set 500 drives the sun gear set 600 to rotate, the planetary gear set 710 drives the planetary carrier 720 to rotate, and the planetary carrier 720 drives the second output shaft 721 to rotate.

[0039] Further, as a preferred embodiment, the planetary gear 711 is rotatably arranged on the planetary shaft, and the inner wall of the lower part of the second groove 120 is provided with an outer ring gear matching the planetary gear set 710. When the motor 200 is running, the first output shaft 220 drives the motor gear 300 to rotate, the motor gear 300 drives the transmission gear set 500 to rotate, the transmission gear set 500 drives the sun gear set 600 to rotate, and the planetary gear 711 revolves around the second center pinion 620. At the same time, the planetary gear 711 rotates on the planetary shaft through the meshing of the outer ring gear and the planetary gear 711, the planetary gear set 710 drives the planetary carrier 720 to rotate, and the planetary carrier 720 drives the second output shaft 721 to rotate.

[0040] Further, as a preferred embodiment, the two second pins 210 are both arranged in an L-shaped structure, and each second pin 210 includes: a long part and a short part connected to each other, one end of the short part is arranged at the upper end of the motor 200, and the other end of the short part is extended upward, one end of the long part is connected to the other end of the short part, and the other end of the long part is extended horizontally outward.

[0041] Furthermore, the connection between the first pin 130 and the second pin 210 is preferably welding.

[0042] Further, as a preferred embodiment, a mounting base 150 is provided on the outer side of the shell 100, and the mounting base 150 is arranged close to the first groove 110. Each first pin 130 includes: an extension portion and a foot portion connected to each other, the extension portion is arranged in an L-shaped structure, the extension portion is electrically connected to the second pin 210, the extension portion is arranged in the mounting base 150, and the lower end of the mounting base 150 has a socket, and the foot portion is arranged in the socket.

[0043] Further, as a preferred embodiment, the inner side of the end cover 400 protrudes downward to form a surrounding wall 410 , and the first output shaft 220 and the motor gear 300 are both extended into the inner side of the surrounding wall 410 .

[0044] Further, as a preferred embodiment, the surrounding wall 410 is provided in transitional cooperation with the motor 200. Further, under the cooperation of the surrounding wall 410 and the first groove 110, the position of the motor 200 is accurately limited, ensuring the transmission accuracy.

[0045] Further, as a preferred embodiment, the upper portion of the outer shell of the motor 200 is preferably formed with a platform-shaped portion, which is extended upward, and the first output shaft 220 of the motor 200 protrudes upward from the platform-shaped portion, and the platform-shaped portion is used to directly transition with the inner side of the surrounding wall 410.

[0046] Further, as a preferred embodiment, the surrounding wall 410 is arranged in a C-shaped structure, one side of the surrounding wall 410 is arranged close to the mounting seat 150, and the other side of the surrounding wall 410 is opened.

[0047] Further, as a preferred embodiment, the first disc gear 510 and the first central pinion gear 520 are integrally injection molded, and the second disc gear 610 and the second central pinion gear 620 are insert-molded.

[0048] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention.

[0049] The present invention also has the following implementation modes based on the above:

[0050] In a further embodiment of the present invention, the two first pins 130 and the housing 100 are preferably integrally injection molded.

[0051] In a further embodiment of the present invention, welding is preferably selected as the connection method between the end cover 400 and the housing 100 .

[0052] The specific operation steps of the electronic parking actuator of the present invention are as follows:

[0053] First, the operator places the motor 200 and the planetary gear mechanism 700 into the first groove 110 and the second groove 120 respectively, and electrically connects the first pin 130 and the second pin 210; then, the operator places the motor gear 300, the transmission gear set 500 and the sun gear set 600 into the housing in turn and connects them to each other; finally, the motor 200 is energized so that the first output shaft 220 drives the motor gear 300 to rotate, the motor gear 300 drives the transmission gear set 500 to rotate, the transmission gear set 500 drives the sun gear set 600 to rotate, the sun gear set 600 drives the planetary gear mechanism 700 to rotate, the planet carrier 720 in the planetary gear mechanism 700 drives the second output shaft 721 to rotate, and the second output shaft 721 outputs power to the external braking system to perform parking action.

[0054] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic parking actuator, characterized in that: include: A housing, wherein an opening is formed at the upper end of the housing, wherein a first groove and a second groove are adjacent to each other in the interior of the opening, and at least two first pins are arranged on the housing; A motor, the motor is installed in the first groove, the upper end of the motor has a first output shaft, the first output shaft is connected to a motor gear, the upper end of the motor is provided with at least two second pins, each of the second pins is electrically connected to one of the first pins; An end cover, the end cover is connected to the shell and is used to close the open port; A transmission gear set, the transmission gear set is arranged in the housing, and the transmission gear set comprises: a first disc gear and a first central pinion gear connected to each other, the first disc gear is in transmission connection with the motor gear; A sun gear set, the sun gear set comprising: a second plate gear and a second central pinion gear connected to each other, the second plate gear being drivingly connected to the first central pinion gear; a planetary gear mechanism, wherein the second central pinion is drivingly connected to the planetary gear mechanism; Wherein, the sun gear set and the planetary gear mechanism are sequentially arranged in the second groove from top to bottom; A first fixed shaft is disposed in the housing, and the transmission gear set is rotatably disposed on the first fixed shaft; A second fixed shaft is arranged on the inner side of the end cover, and the sun gear set is rotatably arranged on the second fixed shaft.

2. The electronic parking actuator according to claim 1, characterized in that: The inner side of the end cover protrudes downward to form a surrounding wall, and the first output shaft and the motor gear are both extended into the inner side of the surrounding wall.

3. The electronic parking actuator according to claim 2, characterized in that: The surrounding wall is arranged in transitional cooperation with the motor.

4. The electronic parking actuator according to claim 1, characterized in that: The housing is provided with a hole, and the first fixed shaft passes through the transmission gear set and extends into the hole for arrangement.

5. The electronic parking actuator according to claim 1, characterized in that: The planetary gear mechanism includes: a planet carrier and a planetary gear set, one end of the planet carrier is provided with a plurality of planetary shafts, the planetary gear set is arranged on the planetary shafts, and the other end of the planet carrier is provided with a second output shaft, the second output shaft passes through the housing and is connected to an external braking system.

6. The electronic parking actuator according to claim 5, characterized in that: The planetary gear set includes: a plurality of planetary gears, each of which is connected to a planetary shaft, the plurality of planetary gears are arranged in sequence along the circumference of the planet carrier, and the plurality of planetary gears are connected to the second central pinion gear.

7. The electronic parking actuator according to claim 1, characterized in that: Both second pins are arranged in an L-shaped structure, and each second pin includes: a long part and a short part connected to each other, one end of the short part is arranged at the upper end of the motor, and the other end of the short part is extended upward, one end of the long part is connected to the other end of the short part, and the other end of the long part is extended horizontally outward.

8. The electronic parking actuator according to claim 1, characterized in that: A mounting seat is arranged on the outer side of the shell, and the mounting seat is arranged close to the first groove. Each of the first pins includes: an extension portion and a foot portion connected to each other, the extension portion is arranged in an L-shaped structure, the extension portion is electrically connected to the second pin, the extension portion is arranged in the mounting seat, and the lower end of the mounting seat has a socket, and the foot portion is arranged in the socket.

9. The electronic parking actuator according to claim 1, characterized in that: The first disc gear and the first small central gear are integrally injection molded, and the second disc gear and the second small central gear are insert-molded.

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