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Coaxial direct-drive type electronic parking actuator

An electronic parking and actuator technology, applied in the direction of brake actuators, gear transmission mechanisms, mechanical equipment, etc., can solve the problems of large output torque, inaccurate positioning, low efficiency, etc., to improve efficiency and life, solve the problem of application Sexual problems, the effect of reducing work noise

Pending Publication Date: 2021-08-20
GELUBO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The actuators of the caliper-type electronic parking brakes that have been applied so far are parallel shaft transmission, and the transmission mode adopts belt transmission or transition gear transmission. These two transmission modes have low efficiency and inaccurate positioning, especially the belt transmission cannot carry large The output torque cannot meet the braking system or vehicle type with larger braking force, and the parallel shaft transmission will limit the bore range of the brake caliper, which cannot meet the needs of the brake caliper with a larger bore
[0006] Therefore, it is necessary to provide a coaxial direct drive electronic parking actuator that directly drives the gearbox for deceleration and torque output, and solves the applicability problem of large bore calipers.

Method used

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  • Coaxial direct-drive type electronic parking actuator
  • Coaxial direct-drive type electronic parking actuator
  • Coaxial direct-drive type electronic parking actuator

Examples

Experimental program
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Effect test

Embodiment 1

[0030] combine Figure 1-4 This embodiment provides a coaxial direct drive electronic parking actuator, including a motor 1 and a gearbox 5, the motor 1 is fixedly connected to the gearbox 5 and its axis coincides; the outer side of the motor 1 housing A connection part 11 is provided, and an insulating layer is arranged inside the connection part 11, and the wire harness connected to the wiring terminal of the internal motor of the motor 1 can be installed in the connection part 11 to prevent the occurrence of electric connection, and the The connection part 11 and the motor 1 are integrally formed by casting aluminum or stamping, and its compact structure does not require secondary assembly. The integral formation makes the motor 1 have good water resistance, and the overall equipment is safer.

[0031] The motor shaft gear 12 is fixedly connected to the power output end of the motor 1, and the motor shaft gear 12 is integrally formed with the shaft of the motor 1 to improve...

Embodiment 2

[0038] The difference between embodiment 2 and embodiment 1 is that both the internal spline 8 and the external spline 9 use a six-tooth spline, and the internal spline 8 and the output disc 54 are integrally formed without secondary splines. Processing improves the connection strength between the internal spline 8 and the output disc 54 and ensures the concentricity of the internal spline 8 and the output disc 54 .

[0039] The motor 1 adopts a flat motor, and the selection of the flat motor makes the axial length of the motor 1 smaller when the output power is the same, so that the volume of the parking device is smaller and the application range is wider.

[0040] The first-stage gear 51 and the second-stage gear 53 are formed by metal powder metallurgy or metal sheet extrusion, thereby reducing the height of the gear box 5 and reducing the overall volume of the device, increasing the range of use.

[0041] In this embodiment, the number of teeth of the internal gear ring m...

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Abstract

The invention discloses a coaxial direct-drive type electronic parking actuator, and relates to the field of vehicle parking braking. The coaxial direct-drive type electronic parking actuator comprises a motor and a gear box which are connected and coincide in axis, wherein the power output end of the motor is connected with a motor shaft gear; the gear box comprises a first-stage gear, a planet carrier, a second-stage gear, an output disc and a gear ring; the top end of the gear ring is connected with the motor; the first-stage gear is meshed with motor shaft gear; the planet carrier is provided with a first planet shaft; the first-stage gear is rotationally connected with the first planet shaft; the planet carrier is provided with a transmission gear; the second-stage gear is meshed with the transmission gear; the output disc is provided with a second planet shaft; the second-stage gear is rotationally connected with the second planet shaft; and an inner gear ring matched with the first-stage gear and the second-stage gear is arranged on the inner surface of the gear ring. According to the coaxial direct-drive type electronic parking actuator provided by the invention, the assembly precision is high, the motor directly drives the gear box to conduct speed reduction and torque output, and the transmission efficiency is high; and the actuator is not limited by the external size of the cylinder diameter of a brake caliper, and is suitable for brake calipers of various sizes.

Description

technical field [0001] The invention relates to the field of vehicle parking brakes, in particular to a coaxial direct drive electronic parking actuator. Background technique [0002] Electronic parking EPB refers to the technology of realizing parking brake by electronic control. Electronic handbrake is a technology that realizes parking brake by electronic control. [0003] The traditional electronic parking brake system has two kinds of motor actuators. One is to remove the handbrake handle on the basis of the traditional handbrake cable parking, and use the motor screw nut transmission mechanism instead of the handle to apply the cable force to the brake. , and the other is a caliper-type electronic parking brake. [0004] The caliper-type electronic parking brake is directly assembled to the brake caliper, and then the brake and caliper are installed together on the wheel side of the axle. The caliper type electronic parking brake directly transmits the braking force...

Claims

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Application Information

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IPC IPC(8): F16D65/14F16D121/14F16D121/24F16D123/00F16D125/50
CPCF16D65/14F16D2121/14F16D2121/24F16D2123/00F16D2125/50
Inventor 李勋刘兆勇
Owner GELUBO TECH CO LTD
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