Electronic parking system for hybrid transmission

Abstract

The embodiment of the invention relates to an electronic parking system for a hybrid transmission. A shell is arranged on the outer side of the electronic parking system for the hybrid transmission; a driving device is arranged on the inner side of the shell; a parking device is arranged on one side of the driving device; an actuating push rod assembly is arranged between the driving device and the parking device; the driving device drives the actuating push rod assembly to do reciprocating rectilinear motion, pushes the parking device to rotate, park or release parking and prevent sliding, and the technical problems that in the prior art, a parking mechanism adopts a rack or a worm gear and a worm to transmit torque and achieve P-in and P-out actions, but gear machining is difficult, and cost is high are solved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the automotive industry, and more particularly to an electronic parking system for hybrid transmissions. Background Technology

[0002] In existing technologies, parking mechanisms use racks or worm gears to transmit torque and achieve the input-output (P) action. However, gears are difficult to machine and have high costs. Summary of the Invention

[0003] The purpose of this invention is to provide an electronic parking system for hybrid transmissions that is compact, simple in structure, and low in cost.

[0004] To achieve the above objectives, embodiments of the present invention provide an electronic parking system for a hybrid transmission, comprising: A housing is disposed on the outside of the electronic parking system for the hybrid transmission; A drive device is provided inside the housing; A parking device is provided on one side of the drive unit; An actuating push rod assembly is provided between the driving device and the parking device; the driving device drives the actuating push rod assembly to perform reciprocating linear motion, thereby rotating the parking device to park or release the parking and prevent the vehicle from rolling away.

[0005] Furthermore, in the electronic parking system for a hybrid transmission of the present invention, the drive unit includes: A parking actuator, which is fixed on the drive unit; A parking motor drive shaft is movably connected to one side of the parking actuator; A parking drive disc is fixed to one side of the parking motor drive shaft; the parking drive disc rotates with the parking motor drive shaft.

[0006] Furthermore, in the electronic parking system for a hybrid transmission of the present invention, the actuation push rod assembly includes: A drive rod is movably connected to one end of the drive rod on one side of the parking drive disc of the drive device; A slider assembly is movably connected to the other end of the drive rod; An actuator block support is fixed on one side of the slider assembly; An actuating spring is movably connected to the drive rod on one side of the actuating block support.

[0007] Furthermore, in the electronic parking system for a hybrid transmission of the present invention, the parking device includes: A parking bracket is fixed to one side of the slider assembly of the actuating push rod assembly and to the parking device. A parking pawl is fixed on the parking bracket. A torsion spring is movably connected between the parking pawl and the parking bracket; A parking pin is fixedly connected to the housing.

[0008] Furthermore, in the electronic parking system for a hybrid transmission of the present invention, the torsion spring is movably connected to the parking pin; the parking pawl rotates about the parking pin.

[0009] Furthermore, in the electronic parking system for hybrid transmissions of the present invention, a positioning steel ball is fixed on one side of the parking motor drive shaft and on the housing.

[0010] Furthermore, in the electronic parking system for a hybrid transmission of the present invention, the positioning steel ball passes through the housing and presses against the parking motor drive shaft.

[0011] Furthermore, in the electronic parking system for a hybrid transmission of the present invention, a parking ratchet is fixedly connected to the output shaft; the parking ratchet and the parking pawl are in a movable engagement; when parking, the parking pawl engages with the ratchet teeth of the parking ratchet.

[0012] Furthermore, in the electronic parking system for a hybrid transmission of the present invention, the tapered surface of the slider assembly is in direct contact with one end of the parking pawl.

[0013] Furthermore, in the electronic parking system for a hybrid transmission of the present invention, the inner ring of the bearing is fixed on the drive shaft of the parking motor.

[0014] Compared with the prior art, the embodiments of the present invention employ a housing on the outside of the electronic parking system for hybrid transmissions; a drive unit on the inside of the housing; a parking device on one side of the drive unit; and an actuation push rod assembly between the drive unit and the parking device. The drive unit drives the actuation push rod assembly to perform reciprocating linear motion, thereby rotating the parking device to park or release the vehicle and prevent it from rolling away. This solves the technical problem in the prior art where the parking mechanism uses a rack or worm gear to transmit torque and achieve the P-in and P-out action, but gear processing is difficult and costly. Attached Figure Description

[0015] Figure 1 This is an isometric view of the present invention; Figure 2This is a perspective view of the present invention; Figure 3 This is the front view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 This is a right view of the present invention; Figure 6 This is a schematic diagram of the actuation push rod assembly. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0017] Embodiments of the present invention relate to an electronic parking system for a hybrid transmission, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, it includes: In this embodiment, a housing 20 is provided on the outside of the electronic parking system for the hybrid transmission. The housing 20 provides structural support and protection for the electronic parking system for the hybrid transmission, ensuring that it is not affected by the external environment during operation, while preventing damage to internal components and maintaining the stability and reliability of the system.

[0018] A drive device 18 is provided inside the housing 20. The drive device 18 converts electrical energy into mechanical energy to drive the parking device 19 to park or release the parking device.

[0019] A parking device 19 is provided on one side of the drive unit 18. When parking, the parking device 19 restricts the rotation of the parking ratchet 1 by the parking pawl 3 under the drive of the drive unit 18. When releasing the parking, the parking device 19 releases the restriction of the parking ratchet 1 by the parking pawl 3 under the drive of the drive unit 18, so that the vehicle can drive normally.

[0020] An actuation push rod assembly 15 is provided between the drive unit 18 and the parking device 19; the drive unit 18 drives the actuation push rod assembly 15 to perform reciprocating linear motion, pushing the parking device 19 to rotate, parking or releasing the parking, and preventing the vehicle from rolling away.

[0021] When parking is required, the parking actuator 10 receives a signal, starts the motor, and drives the parking motor drive shaft 12 to rotate. The parking drive disc 11 rotates with the parking motor drive shaft 12. The parking drive disc 11 converts the rotational motion into the reciprocating linear motion of the actuation push rod assembly 15. The tapered surface 21 of the slider assembly 7 at the other end of the actuation push rod assembly 15 contacts one end of the parking pawl 3. With the linear motion of the slider assembly 7, the parking pawl 3 is pushed to rotate around the parking cylindrical pin 5, so that the pawl head of the parking pawl 3 enters the ratchet tooth groove 16 of the parking ratchet 1, restricting the rotation of the parking ratchet 1, thereby realizing the parking of the vehicle.

[0022] When it is necessary to release the parking brake, the parking actuator 10 receives a signal, the motor rotates in the reverse direction, driving the parking motor drive shaft 12 to rotate in the reverse direction. This drives the actuation push rod assembly 15 to move in the reverse linear direction via the parking drive disc 11. The slider assembly 7 moves accordingly, and the parking pawl 3 rotates in the reverse direction around the parking cylindrical pin 5 under the restoring force of the torsion spring 4. This causes the pawl head of the parking pawl 3 to disengage from the ratchet tooth groove 16 of the parking ratchet 1, releasing the rotation restriction on the parking ratchet 1 and allowing the vehicle to drive normally.

[0023] In this embodiment, an actuating push rod assembly 15 is provided between the drive device 18 and the parking device 19. The drive device 18 drives the actuating push rod assembly 15 to perform reciprocating linear motion, pushing the parking device 19 to rotate, parking or releasing the parking, and preventing the vehicle from rolling away. This solves the technical problem in the prior art that the parking mechanism uses a rack or worm gear to transmit torque and realize the input P and output P action, but gear processing is difficult and costly.

[0024] To achieve the above-mentioned technical effects, such as Figure 1 and Figure 2 As shown, the drive unit 18 includes: A parking actuator 10 is fixed on the drive unit 18. The parking actuator 10 receives a signal and starts the motor according to the signal command, driving the parking motor drive shaft 12 to rotate.

[0025] The parking motor drive shaft 12 is movably connected to one side of the parking actuator 10. Driven by the motor inside the parking actuator 10, it rotates and transmits power to the parking drive disc 11.

[0026] A parking drive disc 11 is fixed on one side of the parking motor drive shaft 12. The parking drive disc 11 rotates with the parking motor drive shaft 12 and converts the rotational motion of the parking motor drive shaft 12 into the reciprocating linear motion of the drive rod 8, ensuring that the power can be effectively transmitted to the actuation push rod assembly 15.

[0027] To achieve the above-mentioned technical effects, such as Figure 1 , Figure 2 and Figure 6As shown, the actuating push rod assembly 15 includes: One end of the drive rod 8 is movably connected to one side of the parking drive disc 11 of the drive unit 18. The drive rod 8 converts the rotational motion of the parking drive disc 11 into its own reciprocating linear motion and transmits it to the slider assembly 7.

[0028] The slider assembly 7 is movably connected to the other end of the drive rod 8. The slider assembly 7 further transmits the reciprocating linear motion transmitted by the drive rod 8. Its conical surface 21 directly contacts one end of the parking pawl 3. Through linear motion, it pushes the parking pawl 3 to rotate around the parking cylindrical pin 5. The pawl head of the parking pawl 3 is engaged in the ratchet tooth groove 16, restricting the rotation of the parking ratchet 1.

[0029] An actuator block support 6 is fixed on one side of the slider assembly 7. The actuator block support 6 provides a position for mounting and supporting the actuator spring 9, and assists the actuator spring 9 in playing an elastic role during the movement of the actuator push rod assembly 15, so as to ensure the stability and reliability of the movement.

[0030] An actuating spring 9 is movably connected to one side of the actuating block support 6 and the drive rod 8. During the movement of the actuating push rod assembly 15, the actuating spring 9 plays a role in buffering and assisting in resetting. When the drive rod 8 and the slider assembly 7 move, the actuating spring 9 can absorb some energy and reduce the impact of movement. The actuating spring 9 can assist in resetting when the parking brake is released.

[0031] To achieve the above-mentioned technical effects, such as Figure 1 and Figure 2 As shown, the parking device 19 includes: A parking bracket 2 is fixed on one side of the slider assembly 7 of the actuating push rod assembly 15 and on the parking device 19. The parking bracket 2 provides a stable support structure for the parking pawl 3, ensuring that the parking pawl 3 can be accurately positioned and moved during parking and releasing.

[0032] A parking pawl 3 is fixed on the parking bracket 2. The parking pawl 3 engages or disengages from the parking ratchet 1 by engaging or disengaging from the ratchet tooth groove 16. Specifically, when parking, the parking pawl 3 is pushed by the slider assembly 7 to rotate around the parking cylindrical pin 5, and the pawl head enters the ratchet tooth groove 16 to restrict the rotation of the parking ratchet 1. When disengaging, the parking pawl 3 disengages from the ratchet tooth groove 16 under the action of the torsion spring 4.

[0033] A torsion spring 4 is movably connected between the parking pawl 3 and the parking bracket 2. The torsion spring 4 provides a restoring force to the parking pawl 3. When the parking is released, the torsion spring 4 enables the parking pawl 3 to automatically and quickly exit the ratchet tooth groove 16 of the parking ratchet 1, thus smoothly releasing the parking.

[0034] A parking cylindrical pin 5 is fixedly connected to the housing 20. The parking cylindrical pin 5 serves as the rotation center axis of the parking pawl 3, enabling the parking pawl 3 to rotate stably around it, precisely controlling the movement trajectory of the parking pawl 3, and ensuring that its pawl head accurately enters and exits the ratchet tooth groove 16 of the parking ratchet 1.

[0035] To achieve the above-mentioned technical effects, such as Figure 1 and Figure 2 As shown, the torsion spring 4 is movably connected to the parking cylindrical pin 5; the parking pawl 3 rotates around the parking cylindrical pin 5.

[0036] To achieve the above-mentioned technical effects, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a positioning steel ball 13 is fixed on one side of the parking motor drive shaft 12 and on the housing 20.

[0037] To achieve the above-mentioned technical effects, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the positioning steel ball 13 passes through the housing 20 and presses against the parking motor drive shaft 12. The positioning steel ball 13 plays the role of positioning and stabilizing the parking motor drive shaft 12, enhancing the locking ability and improving system safety.

[0038] To achieve the above-mentioned technical effects, such as Figure 1 , Figure 3 and Figure 4 As shown, a parking ratchet 1 is fixedly connected to the output shaft 17; the parking ratchet 1 and the parking pawl 3 are in a movable fit; when parking, the parking pawl 3 engages with the ratchet tooth groove 16 of the parking ratchet 1, and the parking ratchet 1 rotates together with the output shaft 17. The parking ratchet 1 has a specific ratchet tooth groove 16, and when the parking pawl 3 engages, it can prevent the output shaft 17 from continuing to rotate, thus achieving the parking effect.

[0039] To achieve the above-mentioned technical effects, such as Figure 1 , Figure 2 and Figure 6 As shown, the tapered surface 21 of the slider assembly 7 is in direct contact with one end of the parking pawl 3, which converts the reciprocating linear motion of the actuating push rod assembly 15 into the rotational motion of the parking pawl 3, causing the pawl head of the parking pawl 3 to enter and exit the ratchet tooth groove 16 of the parking ratchet 1, thus parking or releasing the parking.

[0040] To achieve the above-mentioned technical effects, such as Figure 1 and Figure 2 As shown, the inner ring of the bearing 14 is fixed on the parking motor drive shaft 12. The bearing 14 reduces the frictional resistance when the parking motor drive shaft 12 rotates, reduces energy loss, and enables the parking motor drive shaft 12 to rotate smoothly and flexibly.

[0041] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. An electronic parking system for a hybrid transmission, characterized in that, include: A housing is disposed on the outside of the electronic parking system for the hybrid transmission; A drive device is provided inside the housing; A parking device is provided on one side of the drive unit; An actuating push rod assembly is disposed between the drive device and the parking device; The drive device drives the actuating push rod assembly to perform reciprocating linear motion, pushing the parking device to rotate, parking or releasing the parking, and preventing the vehicle from rolling away.

2. The electronic parking system for a hybrid transmission according to claim 1, characterized in that, The driving device includes: A parking actuator, which is fixed on the drive unit; A parking motor drive shaft is movably connected to one side of the parking actuator; A parking drive disc is fixed to one side of the parking motor drive shaft; the parking drive disc rotates with the parking motor drive shaft.

3. The electronic parking system for a hybrid transmission according to claim 1, characterized in that, The actuating push rod assembly includes: A drive rod is movably connected to one end of the drive rod on one side of the parking drive disc of the drive device; A slider assembly is movably connected to the other end of the drive rod; An actuator block support is fixed on one side of the slider assembly; An actuating spring is movably connected to the drive rod on one side of the actuating block support.

4. The electronic parking system for a hybrid transmission according to claim 1, characterized in that, The parking device includes: A parking bracket is fixed to one side of the slider assembly of the actuating push rod assembly and to the parking device. A parking pawl is fixed on the parking bracket. A torsion spring is movably connected between the parking pawl and the parking bracket; A parking pin is fixedly connected to the housing.

5. The electronic parking system for a hybrid transmission according to claim 4, characterized in that, The torsion spring is movably connected to the parking pin; the parking pawl rotates around the parking pin.

6. The electronic parking system for a hybrid transmission according to claim 2, characterized in that, A positioning steel ball is fixed on one side of the parking motor drive shaft and on the housing.

7. The electronic parking system for a hybrid transmission according to claim 6, characterized in that, The positioning steel ball passes through the housing and presses against the parking motor drive shaft.

8. The electronic parking system for a hybrid transmission according to claim 4, characterized in that, A parking ratchet is fixedly connected to the output shaft; the parking ratchet and the parking pawl are in a movable fit; when parking, the parking pawl engages with the ratchet teeth of the parking ratchet.

9. The electronic parking system for a hybrid transmission according to claim 3, characterized in that, The tapered surface of the slider assembly is in direct contact with one end of the parking pawl.

10. The electronic parking system for a hybrid transmission according to claim 2, characterized in that, The inner ring of the bearing is fixed on the drive shaft of the parking motor.

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