CN210153202U

CN210153202U - Motor-driven parking mechanism

Info

Publication number: CN210153202U
Application number: CN201920380690.6U
Authority: CN
Inventors: 韩启锋; 钟发平; 张彤; 袁敏刚; 章金乐; 阳华萍; 张宝胜
Original assignee: Corun Hybrid Power Technology Co Ltd
Current assignee: Jiangxi Dingsheng New Material Technology Co ltd
Priority date: 2019-03-25
Filing date: 2019-03-25
Publication date: 2020-03-17
Anticipated expiration: 2029-03-25

Abstract

The utility model provides a motor-driven parking mechanism, including the parking ratchet wheel, the parking pawl, pawl return spring, actuating device, auto-lock leaf spring, guider, the parking rocking arm, drive nut, drive screw and driving motor, guider arranges above the parking pawl, actuating device's actuating rod cover has one end of actuating block to incline a certain angle and arranges in guider, actuating rod's the other end fixes in the upper end of parking rocking arm, auto-lock leaf spring's one end fixes in guider's top, auto-lock leaf spring's the other end cover is in a spacing logical groove at parking rocking arm top, drive nut's bottom is installed on the supporting seat and drive nut can reciprocate, the lower extreme of drive screw matches the spiral-closure in drive nut's upper end, drive screw's upper end passes the gearbox box, driving motor's output shaft is connected with drive screw's top, the protruding portion of the parking rocker arm is connected with the drive nut. The utility model discloses simple structure, occupation space is little, and the function is reliable.

Description

Motor-driven parking mechanism

Technical Field

The utility model relates to a parking mechanism, in particular to motor-driven parking mechanism.

Background

In order to prevent the automobile from sliding unexpectedly when the automobile is parked, a parking brake safety mechanism needs to be designed for the automobile. The parking braking form that adopts at present has mechanical type parking braking, motor parking braking or hydraulic pressure parking braking, wherein hydraulic pressure parking braking receives hydraulic system's influence easily, and need increase manual urgent unlocking device, mechanical type parking is arranged comparatively complicatedly, occupation space is big, and motor parking braking is more intelligent than mechanical type parking braking, can carry out intelligent control, its power supply is independent weak current system, do not receive hydraulic system's influence, do not have the congenital defect of hydraulic pressure parking, can park and unblock according to driver's intention at any time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, occupation space are little, the function is reliable, can carry out intelligent control's motor-driven parking mechanism.

The method is realized by the following scheme:

the utility model provides a motor-driven parking mechanism, includes parking ratchet wheel, parking pawl, pawl return spring, actuates the device, auto-lock leaf spring, guider and parking rocking arm, and the one end of parking pawl is fixed on the gearbox box through first fixing device and the parking pawl can rotate around first fixing device, and the claw head of the parking pawl other end is placed relatively and is engaged with the parking ratchet wheel is supporting each other, and the center of pawl return spring is fixed on first fixing device, and the one end card of pawl return spring is on the parking pawl, and the other end of pawl return spring is fixed on the gearbox box, guider is the cell type structure of invering, guider fixes and places the top of parking pawl on the gearbox box in, parking rocking arm top is provided with two spacing logical grooves, the lower extreme of parking rocking arm is provided with the bulge, the lower extreme of parking rocking arm is installed on second fixing device and the parking rocking arm can be changeed around second fixing device and the parking rocking The second fixing device is fixed on a gearbox body, the actuating device comprises an actuating rod, an actuating block and an actuating spring, the actuating block is sleeved at one end of the actuating rod, an inclined actuating surface is arranged at the bottom of the actuating block, the actuating spring is sleeved at the other end of the actuating rod, the actuating spring abuts against the actuating block, one end, sleeved with the actuating block, of the actuating rod is arranged in the guide device in an inclined mode at a certain angle, the actuating surface of the actuating block is in contact with the inclined inner side surface of the top of a parking pawl claw head, the other end of the actuating rod is fixed at the upper end of the parking rocker arm, the actuating device can move in the guide device, one end of the self-locking plate spring is fixed at the top of the guide device, the other end of the self-locking plate spring is sleeved in one limiting through groove at the top of the parking rocker arm, still include driving nut, driving screw and driving motor, driving screw's lower extreme is the external screw thread structure, driving nut's upper end is internal thread hole structure, driving nut's bottom is installed on the supporting seat and driving nut can reciprocate, driving screw's the supporting upper end of closing soon in driving nut, the gearbox box is passed to driving screw's upper end, driving motor's output shaft is connected with driving screw's top, the protruding portion of parking rocking arm is connected with driving nut. The molded lines between the two limiting through grooves at the top of the parking rocker arm are excessive, so that the self-locking plate spring is ensured to smoothly slide between the two limiting through grooves to realize locking and unlocking of the parking mechanism.

Furthermore, the bottom of the driving nut is provided with a supporting pin, and the driving nut is installed on the supporting seat through the supporting pin.

Furthermore, a U-shaped through groove is formed in the driving nut, the U-shaped through groove is matched with the protruding portion of the parking rocker arm, and the U-shaped through groove is used for clamping the protruding portion of the parking rocker arm to achieve the fact that the parking rocker arm is connected with the driving nut.

Furthermore, the gearbox casing pressing device further comprises a pressing device, wherein the pressing device is fixed on the gearbox casing and presses one ends, far away from the gearbox casing, of the first fixing device and one ends, far away from the gearbox casing, of the second fixing device respectively.

The parking rocker arm comprises a pressing device, and is characterized by further comprising a position sensor, wherein the position sensor is fixed on the pressing device, a magnetic block is arranged on a protruding part of the parking rocker arm, and the magnetic block corresponds to the position sensor.

Further, a sealing device is arranged between the driving screw and the box body.

The utility model discloses a motor-driven parking mechanism, simple structure, occupation space is little, the function is reliable, the accessible motor carries out intelligent control, driving motor drives drive screw and rotates, make drive nut reciprocate, thereby make the parking rocking arm rotate, the rotation of parking rocking arm drives and actuates the device and removes, make the piece of moving that actuates the device push down the parking pawl or loosen the parking pawl, the auto-lock leaf spring removes another spacing logical inslot from a spacing logical groove of parking rocking arm simultaneously, finally realize parking or unblock. The motor-driven parking mechanism of the utility model can realize parking and unlocking at any time according to the intention of the driver, and has reliable function; through setting up position sensor, can carry out closed loop accurate control to motor-driven parking mechanism.

Drawings

Fig. 1 is a schematic structural view of a motor-driven parking mechanism in embodiment 1;

FIG. 2 is a schematic structural view of a parking rocker arm in embodiment 1;

FIG. 3 is a schematic structural view of an actuator according to embodiment 1;

fig. 4 is a schematic structural view of a drive nut (upper end is a cross section) in embodiment 1.

Detailed Description

The embodiment is only for illustrating one implementation of the present invention, and is not to be taken as a limiting illustration of the protection scope of the present invention.

Example 1

A motor-driven parking mechanism is shown in figure 1 and comprises a parking ratchet wheel (the parking ratchet wheel is not shown in the figure), a parking pawl 1, a pawl return spring 2, an actuating device 3, a self-locking plate spring 4, a guide device 5, a parking rocker arm 6, a driving nut 7, a driving screw 8, a driving motor 9, a pressing device 10 and a position sensor 13, wherein one end of the parking pawl 1 is fixed on a gearbox body through a first fixing pin 11, the parking pawl 1 can rotate around the first fixing pin 11, a claw head at the other end of the parking pawl 1 is oppositely arranged with the parking ratchet wheel and is mutually matched and meshed with the parking ratchet wheel, the center of the pawl return spring 2 is fixed on the first fixing pin 11, one end of the pawl return spring 2 is clamped on the parking pawl 1, the other end of the pawl return spring 2 is fixed on the gearbox body, the guide device 5 is, the guiding device 5 is fixed on the gearbox casing and is arranged above the parking pawl 1, as shown in fig. 2, the top of the parking rocker arm 6 is provided with two limiting through grooves 61, the two limiting through grooves 61 are at a certain distance and have a certain height difference, the two limiting through grooves 61 are in transition by molded lines, the lower end of the parking rocker arm 6 is provided with a protruding part 62, the lower end of the parking rocker arm 6 is installed on a second fixing pin 12, the parking rocker arm 6 can rotate around the second fixing pin 12, the second fixing pin 12 is fixed on the gearbox casing, the pressing device 10 is fixed on the gearbox casing and the pressing device 10 respectively presses one end of the first fixing pin 11 and one end of the second fixing pin 12 away from the gearbox casing, the position sensor 13 is fixed on the pressing device 10, the protruding part 62 of the parking rocker arm 6 is provided with a magnetic block (not, as shown in fig. 3, the actuating device 3 includes an actuating rod 31, an actuating block 32 and an actuating spring 33, the actuating block 32 is sleeved on one end of the actuating rod 31, the bottom of the actuating block 32 is provided with an inclined actuating surface 321, the actuating spring 33 is sleeved on the other end of the actuating rod 31 and the actuating spring 33 abuts against the actuating block 32, one end of the actuating rod 31 sleeved on the actuating block 32 is arranged in the guiding device 5 with a certain inclination angle, the actuating surface 321 of the actuating block 32 is contacted with the inclined inner side surface of the top of the claw of the parking pawl 1, the other end of the actuating rod 31 is fixed on the upper end of the parking rocker arm 6, the actuating device 3 can move in the guiding device 5, one end of the self-locking plate spring 4 is fixed on the top of the guiding device 5, the other end of the self-locking plate spring 4 is sleeved in a limiting through groove 61 on the top of, the lower end of the driving screw 8 is of an external thread structure, as shown in fig. 4, the upper end of the driving nut 7 is of an internal thread hole structure, a supporting pin 71 is arranged at the bottom of the driving nut 7, a U-shaped through groove 72 is arranged on the driving nut 7, the U-shaped through groove 72 is matched with the protruding part 62 of the parking rocker arm 6, the U-shaped through groove 72 is used for clamping the protruding part 62 of the parking rocker arm 6 to realize that the parking rocker arm 6 is connected with the driving nut 7, the driving nut 7 is installed on the supporting seat 14 through the supporting pin 71 and the driving nut 7 can move up and down, the lower end of the driving screw 8 is matched and screwed in the upper end of the driving nut 7, the upper end of the driving screw 8 penetrates through a gearbox box 15 (only a part of the gearbox box is shown in the figure), a sealing device (not shown in the figure) is arranged between the driving screw.

When parking locking operation needs to be executed, a driver operates a control button, a controller controls a driving motor to rotate in the forward direction, so that a driving screw rod is driven to rotate in the forward direction, a driving nut is driven to move upwards, a parking rocker arm is driven to rotate around a second fixing pin in the counterclockwise direction, an actuating rod of an actuating device is driven to move leftwards when the parking rocker arm rotates, at the moment, an actuating face of an actuating block pushes a parking pawl to rotate under the action of the actuating rod, when a claw head of the parking pawl faces a tooth socket of a parking ratchet wheel, the bottom of the actuating block is in contact with the top face of the claw head of the parking pawl to generate self-locking force, the parking pawl overcomes the action force of a pawl return spring under the action of the actuating block to be clamped into the tooth socket of the parking ratchet wheel, at the moment, a self-locking plate spring.

When needs carry out the unblock operation, the driver operates control button, controller control driving motor reverses, thereby drive the driving screw reversal, make drive nut rebound, it rotates clockwise around the second fixed pin to drive the parking rocking arm, the parking rocking arm pivoted drives the pole that makes that actuates the device and moves right simultaneously, this moment under the effort that makes the pole, it breaks away from the parking pawl to make the piece, make the power elimination that the piece was used in the parking pawl, the parking pawl leaves the tooth's socket of parking ratchet under pawl return spring's effect this moment, the spacing logical groove of rolling to the spacing logical inslot of left end from the spacing logical groove of parking rocking arm right-hand member of auto-lock leaf spring this moment unlocks spacingly, thereby accomplish the unblock.

Claims

1. A motor-driven parking mechanism comprises a parking ratchet wheel, a parking pawl, a pawl return spring, an actuating device, a self-locking plate spring, a guide device and a parking rocker arm, wherein one end of the parking pawl is fixed on a gearbox body through a first fixing device and can rotate around the first fixing device, a claw head at the other end of the parking pawl is oppositely arranged with the parking ratchet wheel and is mutually matched and meshed with the parking ratchet wheel, the center of the pawl return spring is fixed on the first fixing device, one end of the pawl return spring is clamped on the parking pawl, the other end of the pawl return spring is fixed on the gearbox body, the guide device is of an inverted groove-shaped structure, the guide device is fixed on the gearbox body and is arranged above the parking pawl, two limiting through grooves are formed in the top of the parking rocker arm, a protruding part is arranged at the lower end, the lower end of the parking rocker arm is mounted on a second fixing device and can rotate around the second fixing device, the second fixing device is fixed on a gearbox box body, the actuating device comprises an actuating rod, an actuating block and an actuating spring, the actuating block is sleeved at one end of the actuating rod, an inclined actuating surface is arranged at the bottom of the actuating block, the actuating spring is sleeved at the other end of the actuating rod, the actuating spring abuts against the actuating block, one end, sleeved with the actuating block, of the actuating rod is arranged in the guide device in an inclined mode at a certain angle, the actuating surface of the actuating block is in contact with the inclined inner side surface of the top of a claw head of a parking pawl, the other end of the actuating rod is fixed at the upper end of the parking rocker arm, the actuating device can move in the guide device, one end of the self-locking plate spring is fixed at the top of the guide device, the other end of the self-locking plate spring is sleeved in a limiting through Scrolling, characterized by: still include driving nut, driving screw and driving motor, driving screw's lower extreme is the external screw thread structure, driving nut's upper end is internal thread hole structure, driving nut's bottom is installed on the supporting seat and driving nut can reciprocate, driving screw's the supporting upper end of closing soon in driving nut, the gearbox box is passed to driving screw's upper end, driving motor's output shaft is connected with driving screw's top, the protruding portion of parking rocking arm is connected with driving nut.

2. The motor-driven parking mechanism of claim 1, wherein: the bottom of drive nut is provided with the support pin, drive nut passes through the support pin and installs on the supporting seat.

3. The motor-driven parking mechanism of claim 2, wherein: the driving nut is provided with a U-shaped through groove, the U-shaped through groove is matched with the protruding part of the parking rocker arm, and the U-shaped through groove is used for clamping the protruding part of the parking rocker arm to realize that the parking rocker arm is connected with the driving nut.

4. The motor-driven parking mechanism of claim 1, wherein: the pressing device is fixed on the gearbox body and presses one ends, far away from the gearbox body, of the first fixing device and the second fixing device respectively.

5. The motor-driven parking mechanism of claim 4, wherein: the parking rocker arm comprises a pressing device and is characterized by further comprising a position sensor, wherein the position sensor is fixed on the pressing device, a magnetic block is arranged on the protruding portion of the parking rocker arm, and the magnetic block corresponds to the position sensor.

6. The motor-driven parking mechanism according to any one of claims 1 to 5, characterized in that: and a sealing device is arranged between the driving screw and the box body.