Electronic parking brake execution device
A technology of electronic parking and actuators, which is applied in the direction of brake transmission, brake actuators, brakes, etc., and can solve the problems affecting the parking stability and movement of the car
Pending Publication Date: 2021-09-14
HUFAN AUTOMOBILE ELECTRONIC SYST CO LTD
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Problems solved by technology
[0004] However, this electronic parking brake actuator has the following defects: a plurality of planetary gears of the planetary gear transmission assembly are rotatably assembled on one end surface of the planetary gear carrier in the axial direction, and one end of the planetary gears is limited by an end surface of the planetary gear carrier. , there is a large gap between the other end of the planetary gear and the gears of the secondary transmission gear assembly, so the planetary gears are prone to produce axial displacement along the axis of the planetary gear under the interference of the external force along the axis of the planetary gear carrier. To move, affecting the stability of the electronic parking brake actuator on the car's parking brake
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[0031] The technical solution in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0032] Such as Figure 1-7 As shown, the embodiment of the present invention provides an electronic parking brake actuator 10, including a box body 100, a brushless motor 200, a primary transmission gear assembly 300, a secondary transmission gear assembly 400 and a planetary gear transmission assembly 500 .
[0033] The case 100 includes a main case 110 and a case cover 120 . There is a motor accommodating cavity 111 and a gear train accommodating cavity 112 in the main box body 1...
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The invention relates to the technical field of automobiles, in particular to an electronic parking brake execution device. The electronic parking brake execution device comprises a box body, a brushless motor, a first-stage transmission gear assembly, a second-stage transmission gear assembly and a planetary gear transmission assembly, wherein the planetary gear transmission assembly comprises a planet carrier, a plurality of planet gears and an output spline; the planet carrier comprises a supporting plate and a plurality of planet gear shafts arranged at one end of the supporting plate; the planet gear transmission assembly further comprises a limiting plate, a through hole and a plurality of connecting holes surrounding the through hole are formed in the limiting plate, and the ends, away from the supporting plate, of the multiple planet gear shafts are in interference fit with the different connecting holes respectively; and a sun gear penetrates through the through hole to be meshed with the multiple planet gears. According to the electronic parking brake execution device, the multiple planet gears of the planet gear transmission assembly of the electronic parking brake execution device can be prevented from axially moving along the planet gear shafts, and the stability of the electronic parking brake execution device on automobile parking braking is prevented from being affected.
Description
technical field [0001] The present invention relates to the technical field of automobiles, and more particularly, relates to an electronic parking brake actuator. Background technique [0002] Electronic parking brake, also known as electronic hand brake, mainly realizes the parking brake of the car through electronic control. It is different from the traditional hand brake device that requires the driver to exert a large operating force on the parking rod mechanism by hand or foot. , The electronic parking brake only needs the driver to trigger a switch in the cab to realize the parking brake, and the operation is more convenient. [0003] Chinese patent application document CN111795093A discloses an electronic parking brake actuator, including a motor, a housing, a transmission mechanism and a planetary gear mechanism, the motor provides power for the planetary gear mechanism through the transmission mechanism, and the role of the planetary gear mechanism is to utilize a ...
Claims
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IPC IPC(8): F16D65/14B60T13/74F16D121/24F16D121/14
CPCF16D65/14B60T13/74F16D2121/24F16D2121/14
Inventor 杨文军焦胜
Owner HUFAN AUTOMOBILE ELECTRONIC SYST CO LTD