CN112145682A

CN112145682A - Novel electronic parking mechanism and parking system

Info

Publication number: CN112145682A
Application number: CN202011044869.8A
Authority: CN
Inventors: 易伟; 张敏; 杜连征; 刘杨; 付刚; 高正林
Original assignee: SUZHOU DONGFENG FINEBLANKING ENGINEERING CO LTD
Current assignee: SUZHOU DONGFENG FINEBLANKING ENGINEERING CO LTD
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2020-12-29

Abstract

The invention provides a novel electronic parking mechanism and a parking system, wherein the novel electronic parking mechanism comprises: the gear shifting mechanism comprises a main rotating shaft, a gear shifting rail plate, a push rod assembly, a cam, a pawl and a ratchet wheel; the one end and the main shaft of the rail board of shifting are connected perpendicularly to can carry out synchronous rotation along with the main shaft, the one end and the rail board pivot joint of shifting of push rod assembly, and can link along with the action of the rail board of shifting, the cam is installed in the other end of push rod assembly, has conical acting surface on the cam, and the cam leans on through its acting surface and the one end counterbalance of pawl, and the pawl can block with the ratchet mutually under the promotion of cam. According to the parking mechanism, the main rotating shaft is directly connected with the gear shifting rail plate, and the main rotating shaft can directly drive the gear shifting rail plate to act, so that the problems that a certain error exists in a parking position and the structure is complex in the existing parking mechanism are solved. Meanwhile, the positioning block is additionally arranged to guide the movement of the cam, so that the cam can stably push the pawl to be meshed with the ratchet wheel.

Description

Novel electronic parking mechanism and parking system

Technical Field

The invention relates to the technical field of automobile parking, in particular to a novel electronic parking mechanism and a parking system.

Background

With the development of automobile technology, people pay more attention to vehicle safety. The P-gear parking system can lock the vehicle when the vehicle stops or the speed is low, so that safety accidents caused by vehicle sliding when the vehicle runs on a slope are prevented, and the safety performance is improved. Therefore, the parking mechanism is a safety device for preventing the vehicle from sliding, the vehicle can be parked at a certain position reliably without time limitation, and the advantages are very obvious. Therefore, vehicles equipped with the P-range parking system are increasing, and the application is becoming wider and more research is being conducted. However, in the conventional parking system, since the rotating shaft and the rail plate need to be engaged by the rotating arm base pin, a parking position has a certain error when the system is operated, and the structure of the parking system is complicated. Therefore, it is necessary to provide a further solution to the above problems.

Disclosure of Invention

The invention aims to provide a novel electronic parking mechanism and a parking system, which are used for overcoming the defects in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a novel electronic parking mechanism, comprising: the gear shifting mechanism comprises a main rotating shaft, a gear shifting rail plate, a push rod assembly, a cam, a pawl and a ratchet wheel;

one end of the gear shifting rail plate is vertically connected with the main rotating shaft and can synchronously rotate along with the main rotating shaft, one end of the push rod assembly is pivotally connected with the gear shifting rail plate and can be linked along with the action of the gear shifting rail plate, the cam is installed at the other end of the push rod assembly, a conical action surface is arranged on the cam, the cam is abutted against one end of the pawl through the action surface of the cam, and the pawl can be clamped with the ratchet under the pushing of the cam.

As an improvement of the novel electronic parking mechanism, at least part of the abutting surface between the gear shifting rail plate and the main rotating shaft is a plane.

As an improvement of the novel electronic parking mechanism, the planar abutting surfaces are oppositely arranged, and the two abutting surfaces are in transitional connection through the arc-shaped surface.

As an improvement of the novel electronic parking mechanism, the main rotating shaft is also provided with a stop block for axially limiting the gear shifting rail plate.

As an improvement of the novel electronic parking mechanism, the novel electronic parking mechanism further comprises a positioning plate, one end of the positioning plate is fixedly arranged, and the other end of the positioning plate can abut against a first gear shifting limiting groove or a second gear shifting limiting groove which is arranged on the end face of the other end of the gear shifting rail plate side by side.

As an improvement of the novel electronic parking mechanism, the positioning plate is a spring piece.

As an improvement of the novel electronic parking mechanism, the cam is axially and movably arranged at the other end of the push rod assembly, and the push rod assembly is further sleeved with a spring which is abutted against one end of the cam and one end of the push rod assembly.

As an improvement of the novel electronic parking mechanism of the present invention, the novel electronic parking mechanism further includes: the positioning block is provided with a guide surface which is similar to the outer contour of the cam, and the cam pushes the pawl to be clamped with the ratchet wheel along the guide surface.

As an improvement of the novel electronic parking mechanism, the other end of the pawl is also vertically provided with a pawl shaft, and the pawl shaft is sleeved with a torsion spring.

a parking system comprising a novel electronic parking mechanism as described above.

Compared with the prior art, the invention has the beneficial effects that: according to the novel electronic parking mechanism, the main rotating shaft is directly connected with the gear shifting rail plate, and the main rotating shaft can directly drive the gear shifting rail plate to act, so that the problems that certain errors exist in a parking position and the structure is complex due to the fact that the existing parking mechanism needs to be connected through the rotating arm base pin are solved. Meanwhile, the invention also provides guidance for the movement of the cam by additionally arranging a positioning block, so that the cam can stably push the pawl to be meshed with the ratchet wheel.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of an embodiment of the novel electronic parking mechanism of the present invention;

fig. 2 is a perspective exploded view of the novel electronic parking mechanism of fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, an embodiment of the present invention provides a novel electronic parking mechanism, which includes: the gear shifting mechanism comprises a main rotating shaft 1, a gear shifting rail plate 2, a push rod assembly 3, a cam 4, a pawl 5 and a ratchet 6.

The main rotating shaft 1 can perform pivoting motion by taking the axis of the main rotating shaft as the rotating shaft when parking.

The one end and the main shaft 1 of rail board 2 of shifting are connected perpendicularly to can carry out synchronous rotation along with main shaft 1, so realized that main shaft 1 directly links with the rigidity between the rail board 2 of shifting, overcome among the current parking mechanism, need connect and the parking position that brings with the help of rocking arm seat pin has certain error and the complicated problem of structure.

In one embodiment, the abutment surface 21 between the shift rail plate 2 and the main rotating shaft 1 is at least partially planar. Thus, when the main rotating shaft 1 pivots, the shifting rail plate 2 directly connected with the main rotating shaft can be driven to synchronously pivot by the plane. The planar abutting surfaces 21 can be arranged oppositely, so that the main rotating shaft 1 can well drive the gear shifting rail plate 2 to move when pivoting forwards and backwards. And either abutment surface 21 is designed to be arranged facing the pivoting direction of the main shaft 1. At this time, the two abutting surfaces 21 are connected with each other by an arc-shaped surface.

Meanwhile, in order to prevent the shift rail plate 2 from moving in the axial direction, a stop 11 for axially limiting the shift rail plate 2 is further arranged on the main rotating shaft 1, and the stop 11 is distributed on two sides of the rigid connection end shaft of the shift rail plate 2. The two stoppers 11 may be identical in size or shape, or may be designed separately as needed.

In order to shift rail plate 2 and carry on spacingly in parking position and non-parking position, novel electron parking mechanism still includes locating

plate

7, and 7 one ends of locating plate are fixed to be set up, and the other end can shift spacing groove 22 or the second spacing groove 23 counterbalance of shifting that shifts that sets up side by side on the rail plate 2 other end terminal surface of shifting. The first shift limiting groove 22 corresponds to a parking position, and the second shift limiting groove 23 corresponds to a non-parking position. In this way, when the other end of the detent plate 7 is snapped into the first shift limiting groove 22 or the second shift limiting groove 23, the shift rail plate 2 in the corresponding position can be kept relatively fixed.

In one embodiment, the positioning plate 7 is a spring plate. At this time, one end of the spring plate is provided with a cylinder 71 which can be adapted to be opened into the first shift limiting groove 22 or the second shift limiting groove 23. And the area of the spring plate close to the cylinder 71 is provided with a groove structure 72 avoiding the other end of the shift rail plate 2. In order to facilitate the switching of the cylinder 71 of the spring plate between the first shift limiting groove 22 and the second shift limiting groove 23, the first shift limiting groove 22 and the second shift limiting groove 23 are in transitional connection through an arc-shaped surface suitable for the cylinder 71 to slide.

The push rod assembly 3 is used as a transmission component for pushing the pawl 5 to perform parking action, and the push rod assembly 3 is integrally formed.

Specifically, one end of the push rod assembly 3 is designed as a flat plate connecting end 31, which is pivotally connected to the shift rail plate 2, so that the push rod assembly 3 can be linked with the action of the shift rail plate 2. The plate connection end 31 may be pivotally connected to the shift rail plate 2 by a pin 32. One end of the pin shaft 32 is provided with a pivot connection groove matched with the gear shifting rail plate 2, and the other end is provided with another pivot connection groove matched with the flat connection end 31.

The cam 4 is mounted at the other end of the push rod assembly 3, the cam 4 is provided with a conical acting surface 41, the cam 4 is abutted against one end of the pawl 5 through the acting surface 41, and the pawl 5 can be engaged with the ratchet 6 under the pushing of the cam 4. Accordingly, the pawl 5 has a projection 51 which can abut against the operating surface 41. When the cam 4 is separated from the pawl 5, in order to realize the reset of the pawl 5, a pawl shaft 52 is vertically arranged at the other end of the pawl 5, a torsion spring 8 is sleeved on the pawl shaft 52, and two extending ends of the torsion spring 8 are respectively abutted against corresponding fixing surfaces, so that the pawl 5 can be separated from a clamping groove of the ratchet 6 through elastic acting force when the cam 4 is separated from the pawl 5.

Furthermore, the cam 4 is axially movably mounted at the other end of the push rod assembly 3, and the push rod assembly 3 is further sleeved with a spring 42 which is abutted against the cam 4 and one end of the push rod assembly 3. The spring 42 has the functions of stably transmitting force values, reducing the abrasion of the cam and prolonging the service life; meanwhile, the spring 42 also has the function that a false locking state exists in the parking process, namely, the pawl 5 pushes the tooth crest of the ratchet wheel 6 in the parking process, and at the moment, if the spring is not installed, clamping stagnation occurs, and the parking cannot be finished; and through setting up the spring, push rod assembly can continue to reach the parking position forward.

Thus, when the shift rail plate 2 acts, the push rod assembly 3 can be linked to move synchronously, and at the moment, the push rod assembly 3 applies an elastic acting force to the cam 4 through the compression of the spring 42, so that the pawl 5 is pushed to be clamped with the ratchet 6. At this time, one end of the spring 42 abuts against the cam 4, and the other end abuts against the plate connecting end 31. And the spring 42 can release the elastic force to reset the cam 4 when the cam 4 is disengaged from the pawl 5.

In order to ensure that the cam 4 can stably push the pawl 5 to be meshed with the ratchet wheel 6, the invention also provides guidance for the movement of the cam 4 by additionally arranging a positioning block 9.

Specifically, the novel electronic parking mechanism of the present embodiment further includes: and a positioning block 9. The positioning block 9 has a guide surface 91 following the outer contour of the cam 4, said guide surface 91 being arranged facing the projection 51 on the pawl 5, so that the cam 4 can push the pawl 5 along the guide surface 91 into engagement with the ratchet 6. The positioning block 9 further has a fixing seat 92, the fixing seat 92 is perpendicular to the guiding surface 91, and two fixing through holes are further formed in the fixing seat 92. The positioning block 9 can be an integrated piece, so that the positioning block 9 can be manufactured by adopting an integrally forming process, and the positioning block has the advantages of simple structure and lower cost.

Based on the same inventive concept, another embodiment of the present invention also provides a parking system. The parking system comprises the novel electronic parking mechanism.

In conclusion, in the novel electronic parking mechanism, the main rotating shaft is directly connected with the gear shifting rail plate, and the main rotating shaft can directly drive the gear shifting rail plate to act, so that the problems of certain errors and complicated structure of a parking position caused by the fact that the rotating arm seat pins are required to be connected in the conventional parking mechanism are solved. Meanwhile, the invention also provides guidance for the movement of the cam by additionally arranging a positioning block, so that the cam can stably push the pawl to be meshed with the ratchet wheel.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a novel electron parking mechanism which characterized in that, novel electron parking mechanism includes: the gear shifting mechanism comprises a main rotating shaft, a gear shifting rail plate, a push rod assembly, a cam, a pawl and a ratchet wheel;

2. The novel electronic parking mechanism as claimed in claim 1, wherein the abutting surface between the shift rail plate and the main rotating shaft is at least partially a plane.

3. The novel electronic parking mechanism as claimed in claim 2, wherein the planar abutting surfaces are oppositely arranged, and the two abutting surfaces are in transition connection through an arc-shaped surface.

4. The novel electronic parking mechanism as claimed in any one of claims 1 or 3, wherein a stopper for axially limiting the gear shifting rail plate is further arranged on the main rotating shaft.

5. The novel electronic parking mechanism according to claim 1, further comprising a positioning plate, wherein one end of the positioning plate is fixedly arranged, and the other end of the positioning plate can abut against a first gear shifting limiting groove or a second gear shifting limiting groove arranged side by side on the end face of the other end of the gear shifting rail plate.

6. The novel electronic parking mechanism as claimed in claim 5, wherein the positioning plate is a spring plate.

7. The novel electronic parking mechanism as claimed in claim 1, wherein the cam is axially movably mounted at the other end of the push rod assembly, and the push rod assembly is further sleeved with a spring which abuts against one end of the cam and one end of the push rod assembly.

8. The novel electronic parking mechanism as claimed in claim 1, further comprising a positioning block having a guiding surface following the outer contour of the cam, wherein the cam pushes the pawl to engage with the ratchet wheel along the guiding surface.

9. The novel electronic parking mechanism according to claim 1, wherein a pawl shaft is vertically arranged at the other end of the pawl, and a torsion spring is sleeved on the pawl shaft.

10. A parking system, characterized in that it comprises a novel electronic parking mechanism according to any of claims 1 to 9.