CN213064592U

CN213064592U - Electron parking structure and car

Info

Publication number: CN213064592U
Application number: CN202021722562.4U
Authority: CN
Inventors: 朱恩强
Original assignee: BAIC Motor Powertrain Co Ltd
Current assignee: BAIC Motor Powertrain Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-27
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses an electron parking structure and car, this electron parking structure include with the output shaft fixed connection's of derailleur parking ratchet wheel, set up on the gearbox housing and be used for the parking positioning mechanism who cooperates the rotation of restriction parking ratchet wheel with the tooth's socket on the parking ratchet wheel to and set up on the gearbox housing, through with the cooperation of parking positioning mechanism, realize the parking drive mechanism to the restriction of parking ratchet wheel or remove the restriction; the utility model provides an among the prior art traditional automatic gearbox parking structure occupation space big, the low problem of just arranging the difficulty of integrated degree, the utility model provides a parking structure integrated level is high, and is small, can arrange in narrow and small space, compact structure can make the parking function more reliable.

Description

Electron parking structure and car

Technical Field

The utility model relates to a parking structure technical field, concretely relates to electron parking structure and car.

Background

The automobile electromotion and intellectualization are the trend of future development, and as the parking function of the gear shifting function, the electromotion is realized firstly; the new energy automobile is driven by a motor, and the R, N, D gear can be controlled in an electronic control mode of a driving motor, so that the P gear also needs to be electronically controlled, namely an electronic parking mechanism; the Vehicle Control Unit (VCU) integrates or controls a Parking Controller (PCU) to drive a gear shifting shaft to rotate or move by controlling a parking motor, and the tooth part of a parking claw is meshed with the tooth part of a parking ratchet wheel by transmitting driving force through internal machinery, so that parking is realized.

The current electronic parking function is still less in application, the technology is in the starting stage, most adopt on former automatic gearbox parking mechanism's basis, the drive mode with the gear shift axle is changed into parking motor direct drive's mode by the mechanical system of handle-acting as go-between, gearbox internal mechanical structure is unchangeable, realize the electronic parking function, and traditional automatic gearbox parking mechanism drives the parking claw through the gear shift axle, the cam plate, the parking guide arm and carries out the parking, this kind of structure is because the function of shifting of other gears will be taken into account in traditional gearbox, in addition automatic gearbox volume space is great, therefore the design is compact inadequately, it is great to occupy the space. The new energy automobile speed reducer does not need to give consideration to the requirements of other gears, is small in size and limited in space, and the parking mechanism using the traditional automatic transmission is greatly limited.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an electron parking structure and car, the integrated level of electron parking structure is high, and is small, can arrange in narrow and small space, and compact structure can make the parking function more reliable.

In order to achieve the above object, the utility model provides an electron parking structure, include:

the parking ratchet wheel is fixedly connected with an output shaft of the transmission and is provided with a tooth groove;

the parking positioning mechanism is arranged on the transmission shell and used for being matched with the tooth grooves to limit the rotation of the parking ratchet wheel; and

the parking driving mechanism is arranged on the transmission shell and is matched with the parking positioning mechanism to limit or remove the limit of a parking ratchet wheel;

the parking positioning mechanism comprises an L-shaped positioning arm, a positioning rotating shaft, a positioning pawl and a return spring, wherein the positioning rotating shaft is arranged at the tail end of the L-shaped positioning arm and is rotatably connected with the transmission shell, the positioning pawl is arranged at the front end of the L-shaped positioning arm and is matched with the parking ratchet wheel, and the return spring is arranged at the tail end of the L-shaped positioning arm and is matched with the transmission shell.

The parking driving mechanism comprises a gear shifting shaft, a parking driving plate, a parking guide plate, a driving spring, a limiting column, a cam plate and an adjusting spring, wherein the gear shifting shaft is arranged on the transmission shell, the front end of the gear shifting shaft is fixedly connected with an output shaft of a parking motor, the parking driving plate is fixedly arranged on the gear shifting shaft and matched with the positioning pawl for parking, the parking guide plate is movably arranged on the gear shifting shaft and tightly attached to the parking driving plate, the driving spring is arranged between the parking guide plate and the parking driving plate, the limiting column is arranged on the parking guide plate and used for limiting the parking driving plate, the cam plate is fixedly arranged on the gear shifting shaft and used for limiting the parking guide plate, and the adjusting spring is arranged on the cam plate and fixedly connected with the transmission shell.

The parking driving plate comprises a circular ring plate matched with the gear shifting shaft, a parking supporting plate arranged on the side of the circular ring plate and connected into a whole, a parking pressing plate arranged on the outer side of the parking supporting plate and connected into a whole, and a positioning bump arranged on the side face of the parking supporting plate and used for being matched with the driving spring.

Wherein, the parking deflector include with gear shifting shaft fixed connection and the middle direction base plate that sets up the round hole, with direction base plate even is used for as an organic whole to being close to the parking drive plate side of parking backup pad carries out complex parking direction limiting plate, with the parking drive plate side that the locating lug located carries out complex parking direction drive plate, sets up on the parking direction drive plate and with driving spring matched with drive flange.

The side face of the L-shaped positioning arm, which is located at the position of the positioning pawl, is provided with a groove, and a positioning rotating wheel matched with the parking driving plate is arranged in the groove.

The gear shifting shaft is provided with a limiting block used for fixing and limiting the parking driving plate.

Wherein, the adjusting spring is a leaf spring or a torsion spring.

Wherein, the driving spring is a cylindrical spring or a conical spring.

The cam plate is a fan-shaped plate with a W-shaped arc surface.

The embodiment of the utility model provides a still provide a car, the car includes the electron parking structure in the above-mentioned embodiment.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:

the utility model aims at the problems of large space occupation, low integration degree and difficult arrangement of the parking structure of the traditional automatic transmission in the prior art, a parking ratchet wheel is fixedly arranged on the power output shaft of the transmission, a gear shifting shaft capable of freely rotating is arranged on the shell of the transmission, and the gear shifting shaft is connected with the output shaft of a parking motor through a spline, thereby ensuring the stability of parking power; the parking drive plate arranged on the gear shifting shaft can extrude a positioning pawl at the end part of the L-shaped positioning arm through a convex surface on an outer arc surface of the parking drive plate to realize the matching of the positioning pawl and a tooth groove on the surface of a parking ratchet wheel so as to realize locking parking, and after the positioning pawl is withdrawn from the extrusion, the parking drive plate realizes the unlocking of the parking through a reset spring at the end part of the L-shaped positioning arm; when parking is carried out, the parking drive plate is tightly attached to the positioning pawl under the pressure action of the driving spring, so that the positioning pawl is tightly attached to the arc surface of the parking ratchet wheel, and the positioning pawl is clamped into the tooth groove of the parking ratchet wheel to realize locking parking when a vehicle slightly moves to drive the parking ratchet wheel to rotate even though the tooth groove on the parking ratchet wheel is not just matched with the positioning pawl; and the cam plate is matched with the leaf spring, so that the accuracy of the rotation angle of the gear shifting shaft is ensured, the reliability of parking is ensured, and meanwhile, the gear shifting shaft can not freely rotate to cause parking failure under the non-operating state of a parking motor.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the positioning mechanism of the present invention;

fig. 3 is a schematic structural diagram of the parking drive plate of the present invention;

fig. 4 is a schematic structural view of the parking guide plate of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.

As shown in fig. 1-4, according to the electronic parking structure of the embodiment of the present invention, the electronic parking structure may include a parking ratchet 1, a parking positioning mechanism and a parking driving mechanism.

Specifically, the parking ratchet wheel 1 is arranged on an output shaft of an automobile transmission, and the braking parking of an automobile can be realized by fixing the parking ratchet wheel; one end of the parking positioning mechanism is movably connected with the inner wall of the transmission shell, and the other end of the parking positioning mechanism is meshed with a tooth groove 11 on the parking ratchet wheel 1 to limit the rotation of the parking ratchet wheel 1; the parking driving mechanism is arranged on the transmission shell, and can realize the limitation or the limitation removal of the parking ratchet wheel 1 through the matching with the parking positioning mechanism, thereby realizing the parking or the parking removal.

That is to say, the electronic parking structure comprises a parking ratchet wheel 1, a parking positioning mechanism and a parking driving mechanism, wherein the parking positioning mechanism comprises an L-shaped positioning arm 2, a positioning rotating shaft 3 which is arranged at the tail end of the L-shaped positioning arm 2 and is in rotating connection with a transmission shell, the tail end of the L-shaped positioning arm 2 can be in rotating connection with the transmission shell through the positioning rotating shaft 3, a positioning pawl 18 is arranged at the front end of the L-shaped positioning arm 2, the positioning pawl 18 can be meshed with a tooth groove 11 on the parking ratchet wheel 1, and the parking is realized by fixing the parking ratchet wheel 1 after the positioning pawl 18 enters the tooth groove 11; in order to avoid the phenomenon that parking failure is relieved when parking is relieved and the parking drive plate 5 rotates anticlockwise for a certain angle, when the extrusion on the positioning pawl 18 is relieved, the positioning pawl 18 cannot be separated from the tooth groove 11 on the drive wheel 1, the reset spring 4 is arranged at the positioning shaft 3 at the tail end of the L-shaped positioning arm 2, the reset of the parking positioning mechanism can be realized when parking is relieved, meanwhile, after the short arm of the L-shaped positioning arm 2 is reset, the end part of the short arm is in contact with the inner wall of the transmission shell to realize positioning, so that the positioning pawl 18 and the parking ratchet wheel 1 keep a small and stable distance, and the next quick parking is favorably realized.

Furthermore, the parking driving mechanism comprises a gear shifting shaft 6 which is arranged on the transmission shell and the front end of which is fixedly connected with the output shaft of the parking motor, the gear shifting shaft 6 is connected with the transmission shell through a bearing, so that the positioning and the rotation can be realized, and the installation and the fixation of the gear shifting shaft 6 can be realized by adopting a copper bush structure; the parking drive plate 5 is arranged on the gear shifting shaft 6 and matched with the positioning pawl 18, the parking drive plate 5 can rotate around the gear shifting shaft 6, and the parking drive plate 5 can be driven to extrude or release the positioning pawl 18 by driving the gear shifting shaft 6 to rotate through the parking motor; the parking guide plate 21 is arranged on the gear shifting shaft 6 and clings to the parking drive plate 5, the parking guide plate 21 is fixedly connected with the gear shifting shaft 6, the parking guide plate 21 can be driven to rotate when the gear shifting shaft 6 rotates, the parking guide plate 21 drives the parking drive plate 5 to rotate for a certain angle through the drive spring 15, the parking drive plate 5 is driven to rotate circularly through the drive spring 15 between the parking guide plate 21 and the parking drive plate 5, and the parking guide plate 21 is provided with the limit post 7 which can well avoid the phenomenon that the parking drive plate 5 cannot be controlled after the drive spring 15 pushes the parking drive plate 5 to rotate; the shift shaft 6 is provided with a cam plate 10 for limiting the parking guide plate 21, and the cam plate is fixedly connected with the shift shaft 6, preferably in a pin connection mode, and of course, the cam plate can be connected in a welding or interference fit mode.

One end of the adjusting spring 12 is connected with the cam plate 10, and the other end of the adjusting spring 12 is connected with the transmission shell; the adjusting spring 12 is preferably a leaf spring, but a torque spring may be adopted, and the cam plate 10 is used as a lever to cooperate with the adjusting spring 12, so as to ensure the accuracy of the rotation angle of the shift shaft 6, thereby ensuring the reliability of parking, and simultaneously ensuring that the shift shaft 6 cannot rotate freely to cause parking failure in the non-operating state of the parking motor.

From this, according to utility model embodiment's electron parking structure, through ingenious design, the integrated level is high, and is small, can arrange in narrow and small space, compact structure can make the parking function more reliable.

According to one embodiment of the present embodiment, the parking drive plate 5 comprises a circular ring plate 51 matched with the shift shaft 6, and the parking drive plate 5 freely rotates on the shift shaft 6 by a way that a circular hole in the middle of the circular ring plate 51 is in clearance fit with the shift shaft 6; the parking support plate 52 is arranged on the side of the circular ring plate 51 and is connected into a whole, and the parking support plate 52 can be matched with the reset positioning pawl 18 to play a positioning and bearing role; the parking pressing plate 53 which is arranged on the outer side of the parking supporting plate 52 and is connected into a whole can press the positioning pawl 18 under the driving of the gear shifting shaft 6, in order to prevent the driving spring 15 from sideslipping when pushing the parking driving plate 5, a positioning bump 54 matched with the driving spring 15 is formed on the side surface of the parking driving plate 5, and the bump can be welded on the parking pressing plate according to the design requirement or the driving spring 15 can be positioned in a punching fixing screw mode.

In some embodiments of the present invention, the parking guide plate 21 includes a guide base plate 19 fixedly connected to the shift shaft 6 and having a circular hole in the middle, and the guide base plate 19 is fixedly connected to the shift shaft 6, so as to provide a stable bearing surface for the guide base plate 19; the parking guide limiting plate 8 is connected with the guide base plate 19 into a whole and used for matching the side face of the parking drive plate 5 close to the parking support plate 52, the tail end of the parking guide limiting plate 8 is provided with a limiting column 7, and the parking guide limiting plate 8 can provide a stable bearing face for the limiting column 7; the parking guide driving plate 14 is matched with the side face, where the positioning bump 54 is located, of the parking driving plate 5, the parking guide driving plate 14 can provide a stable bearing face for the parking driving plate 5, the parking guide driving plate 14 is provided with a driving convex plate 20 matched with the driving spring 15, and the driving convex plate 20 is stamped to enable the height of the driving convex plate 20 to be consistent with the horizontal height of the parking driving plate 5, so that the driving of the driving spring 15 is facilitated, and meanwhile, an inverted L-shaped supporting column can be arranged on the parking guide driving plate 14 according to the design requirement to be matched with the driving spring 15; the driving spring 15 is preferably a cylindrical spring, but a conical spring or the like may be used according to design requirements.

In other embodiments of the present invention, a groove 17 is disposed on the side surface of the L-shaped positioning arm 2 at the position of the positioning pawl 18, and a positioning wheel 16 matched with the parking drive plate 5 is disposed in the groove 17; due to the arrangement of the positioning rotating wheel 16, the sliding contact between the back surface of the positioning pawl 18 and the parking driving plate 5 can be easily realized, the difficulty of pushing the parking driving plate 5 by the driving spring 15 is reduced, and the precision in parking is improved.

According to some embodiments of the present invention, a stopper 9 for fixing and limiting the parking drive plate 5 is provided on the shift shaft 6; the limiting block 9 is fixed with the gear shifting shaft 6 in an interference fit mode, and the parking drive plate 5 can be prevented from being separated from the gear shifting shaft 6.

According to the utility model discloses a further other embodiments, cam plate 10 is the sector plate of W type for the excircle, and adjusting spring 12 passes through positioning bolt 13 and derailleur casing fixed connection simultaneously, ensures cam plate 10 and leaf spring complex stability, and the W type is personally submitted to the excircle of cam plate 10 for cam plate 10 can be fine cooperate with adjusting spring 12 and derailleur inner wall, ensures the reliability of parking.

The embodiment of the utility model provides a still provide a car, the car includes the electron parking structure as in above-mentioned embodiment, wherein, the embodiment of above-mentioned electron parking structure all is applicable to the embodiment of this car, also can reach the same technological effect.

The utility model discloses a use method: when the vehicle is parked, the vehicle control unit judges the current state of the whole vehicle, sends a parking instruction under the condition that the vehicle can be parked, controls a parking motor to drive a gear shifting shaft 6 to rotate clockwise for a certain angle, drives a parking driving plate 5 to rotate for a certain angle through a driving spring 15, a parking pressing plate 53 on the parking driving plate 5 pushes a positioning pawl 18 to be attached to the outer surface of a parking ratchet wheel 1, and the positioning pawl 18 is meshed with a tooth groove 11 of the parking ratchet wheel 1 through the self movement of the vehicle or just enables the positioning pawl 18 to be meshed with the tooth groove 11 of the parking ratchet wheel 1, so that the state shown in the.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An electronic parking structure, characterized in that: comprises that

The parking ratchet wheel (1) is fixedly connected with an output shaft of the transmission, and a tooth groove (11) is formed in the parking ratchet wheel (1);

the parking positioning mechanism is arranged on the transmission shell and used for being matched with the tooth grooves (11) to limit the rotation of the parking ratchet wheel (1); and

the parking driving mechanism is arranged on the transmission shell and is matched with the parking positioning mechanism to limit or remove the limit of the parking ratchet wheel (1);

parking positioning mechanism includes L type registration arm (2), sets up L type registration arm (2) end and with derailleur housing rotates location pivot (3) of connecting, sets up L type registration arm (2) front end and with parking ratchet wheel (1) matched with location pawl (18), and set up and be in L type registration arm (2) end and with derailleur housing matched with reset spring (4).

2. The electronic parking structure of claim 1, wherein: the parking driving mechanism comprises a gear shifting shaft (6) which is arranged on the transmission shell and the front end of which is fixedly connected with an output shaft of a parking motor, a parking driving plate (5) which is fixedly arranged on the gear shifting shaft (6) and is matched with a positioning pawl (18) for parking, a parking guide plate (21) which is movably arranged on the gear shifting shaft (6) and is tightly attached to the parking driving plate (5), a driving spring (15) which is arranged between the parking guide plate (21) and the parking driving plate (5), a limiting column (7) which is arranged on the parking guide plate (21) and is used for limiting the parking driving plate (5), and a cam plate (10) which is fixedly arranged on the gear shifting shaft (6) and is used for limiting the parking guide plate (21), and an adjusting spring (12) having one end disposed on the cam plate (10) and the other end fixedly connected to the transmission case.

3. The electronic parking structure according to claim 2, characterized in that: parking drive plate (5) include with gear shift shaft (6) cooperate ring plate (51), set up and be in ring plate (51) lateral part and even parking backup pad (52) as an organic whole, set up and be in the parking backup pad (52) outside and even parking pressure strip (53) as an organic whole set up be used for on the parking backup pad (52) side with driving spring (15) matched with location lug (54).

4. The electronic parking structure according to claim 3, characterized in that: parking deflector (21) include with shift shaft (6) fixed connection and middle guide substrate (19) that set up the round hole, with guide substrate (19) even be used for as an organic whole to being close to parking drive plate (5) side of parking backup pad (52) carries out complex parking direction limiting plate (8), with parking drive plate (5) side at location lug (54) carries out complex parking direction drive plate (14), sets up on parking direction drive plate (14) and with driving spring (15) matched with drive flange (20).

5. The electronic parking structure according to claim 4, characterized in that: a groove (17) is formed in the side face, located at the position of the positioning pawl (18), of the L-shaped positioning arm (2), and a positioning rotating wheel (16) matched with the parking driving plate (5) is arranged in the groove (17).

6. The electronic parking structure according to claim 2, characterized in that: and the gear shifting shaft (6) is provided with a limiting block (9) for fixing and limiting the parking driving plate (5).

7. The electronic parking structure according to claim 2, characterized in that: the adjusting spring (12) is a leaf spring or a torsion spring.

8. The electronic parking structure according to claim 2, characterized in that: the driving spring (15) is a cylindrical spring or a conical spring.

9. An automobile characterized by comprising the electronic parking structure according to any one of claims 1 to 8.