CN216951615U - Integral parking braking mechanism - Google Patents
Integral parking braking mechanism Download PDFInfo
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- CN216951615U CN216951615U CN202220135514.8U CN202220135514U CN216951615U CN 216951615 U CN216951615 U CN 216951615U CN 202220135514 U CN202220135514 U CN 202220135514U CN 216951615 U CN216951615 U CN 216951615U
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- parking
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- bump
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Abstract
The application discloses an integral parking braking mechanism, which comprises a parking gear and a braking module, wherein the parking gear is arranged on a power transmission shaft; the braking module comprises a driving part, a parking bump, a pawl, an installation shaft and a pawl return torsion spring; the driving part drives the parking bump to linearly reciprocate, one side of the pawl, which is far away from the parking gear, is abutted against the parking bump, one side of the pawl, which is towards the parking gear, is provided with a braking bulge, the pawl is arranged on the installation shaft, the pawl rotates around the installation shaft, the pawl return torsion spring is arranged around the installation shaft, one end of the pawl return torsion spring is connected with the pawl, and the other end of the pawl return torsion spring is fixed; the driving part drives the parking bump to move towards the parking direction, the protruding part of the parking bump pushes the pawl to rotate around the mounting shaft to the parking gear, so that the pawl return torsion spring is in a compressed state, and the braking protrusion enters a gear groove of the parking gear to perform parking locking. The parking brake mechanism is integrally designed, so that the parking brake mechanism is convenient to process, simple to install and capable of saving installation space.
Description
Technical Field
The utility model relates to the technical field of parking braking, in particular to an integral parking braking mechanism.
Background
With the rapid development of automobile technology and the rapid increase of automobile holding capacity, the automobile parking brake technology also shows a rapid development trend.
At present, all automobiles are provided with automatic transmissions, so that the problem of power gear shifting is fundamentally solved, and the gear shifting comfort is greatly improved. An automatic transmission is generally installed between an engine and a transmission shaft of a vehicle, and automatically changes a transmission ratio by an electric control signal to expand a variation range of a vehicle driving force and speed so as to adapt to a frequently-changing driving condition. In order to prevent the vehicle from sliding caused by the rotation of any wheel during parking and ensure that the vehicle can be reliably parked at a certain position even on a slope without time limitation, the automatic transmission is provided with a parking locking mechanism so as to lock the transmission.
However, the parking lock mechanism in the existing automobile is usually designed in a split manner, and needs to be processed in a plurality of areas for accurate installation, so that the processing and installation are complicated, and the processing cost and the installation space are increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems stated in the background technology, an object of the present application is to provide an integrated parking brake mechanism, in which a driving portion, a parking projection, and a pawl in the parking brake mechanism are combined into a whole, so that the integrated parking brake mechanism has a simple and compact structure, is convenient to process and install, saves installation space, and does not require processing in multiple areas on a case of a transmission case to install the parking brake mechanism.
In order to achieve the above object, the present application provides an integrated parking brake mechanism, which includes a parking gear and a brake module, wherein the parking gear is mounted to a power transmission shaft; the brake module comprises a driving part, a parking bump, a pawl, a mounting shaft and a pawl return torsion spring; the driving part drives the parking bump to linearly reciprocate, one side of the pawl, which is far away from the parking gear, abuts against the parking bump, one side of the pawl, which faces the parking gear, is provided with a braking bulge, the pawl is mounted on the mounting shaft, the pawl rotates around the mounting shaft, the pawl return torsion spring is arranged around the mounting shaft, one end of the pawl return torsion spring is connected with the pawl, and the other end of the pawl return torsion spring is fixed; the drive division drive the parking lug removes to the parking direction, the bulge of parking lug promotes the pawl winds the installation axial the direction of parking gear is rotated, makes pawl return torsional spring is in compression state, the protruding entering of braking is in order to carry out the parking locking in the parking gear tooth's slot.
Therefore, the parking brake mechanism can be integrally installed in a box body of a transmission with narrow space, the application combines a driving part, a parking bump, a pawl, an installation shaft and a pawl return torsion spring into a brake module, the integrated design is convenient to process and install, the installation space is saved, and the parking brake mechanism does not need to be installed by processing a plurality of areas on the box body of the transmission, when the parking brake mechanism is installed, only a parking gear is needed to be installed on a power transmission shaft, and the brake module is installed on the box body of the transmission, the integrated design greatly reduces the processing cost of the box body, shortens the assembly time of the parking brake mechanism, effectively solves the problems that the traditional parking brake mechanism has too many installation parts on the box body of the transmission and the box body is difficult to process, and replaces the installation mode that parts of parking parts are respectively installed by the composite brake module, the production efficiency and the reliability of the assembly process are improved, the product quality is ensured, and the product cost is reduced.
As an optional realization mode of an integral parking braking mechanism, the driving part comprises a driving part, a piston rod and a piston return pressure spring, the driving part drives the piston rod to do linear reciprocating motion, the piston rod and the parking bump, and the piston return pressure spring is sleeved on the piston rod.
As an alternative implementation manner of the integral parking brake mechanism, the driving part is a hydraulic driving part, and the driving part is provided with an electromagnetic valve.
As an optional implementation manner of the integral parking brake mechanism, the parking bump moves in the opposite direction of the parking direction, so that the piston return pressure spring is compressed and deformed; the parking bump moves towards the parking direction, so that the piston return pressure spring is restored to the original state.
As an optional implementation mode of the integral parking brake mechanism, the parking brake mechanism further comprises a parking push rod, one end of the parking push rod is connected with the parking bump along the moving direction of the parking bump, and the other end of the parking push rod is fixed.
As an optional implementation mode of the integral parking brake mechanism, the integrated parking brake mechanism further comprises a push rod return pressure spring, and the push rod return pressure spring is sleeved on the parking push rod.
As an optional implementation mode of the integral parking braking mechanism, the parking braking mechanism further comprises a connecting plate, one end of the parking push rod is fixedly connected with the connecting plate, and the mounting shaft is mounted on the connecting plate.
As an optional implementation manner of the integral parking brake mechanism, the parking brake mechanism further comprises a guide limiting part, the guide limiting part is abutted to one side, away from the parking gear, of the parking protruding block, and one side, away from the pawl, of the parking protruding block moves along the profile of the guide limiting part.
As an alternative implementation manner of the integral parking brake mechanism, the protruding part of the parking bump is provided with a rolling piece, and the rolling piece rolls along the pawl contour at the position where the pawl abuts against the parking bump.
As an optional implementation mode of the integral parking braking mechanism, one side, far away from the parking gear, of the pawl is provided with an arc-shaped transmission protrusion corresponding to the braking protrusion position, the arc-shaped transmission protrusion is abutted to the parking bump, and the arc-shaped transmission protrusion protrudes towards one side, far away from the parking gear.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural view of an exemplary embodiment of an integrated parking brake mechanism;
FIG. 2 is a perspective view of an exemplary embodiment of an integrated parking brake mechanism.
Description of the reference numerals:
1. a parking gear;
2. a drive section; 21. a drive member; 22. a piston rod; 23. a piston returns to the pressure spring;
3. a parking bump; 31. a rolling member;
4. a pawl; 41. a braking projection; 42. an arc-shaped transmission bulge;
5. installing a shaft;
6. the pawl returns to the torsion spring;
7. a parking push rod; 71. the push rod returns to the pressure spring;
8. a connecting plate;
9. and a guide limiting part.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Referring to fig. 1 and 2, the present application provides an integrated parking brake mechanism, which includes a parking gear 1 and a brake module, wherein the parking gear 1 is mounted on a power transmission shaft; the brake module comprises a driving part 2, a parking bump 3, a pawl 4, a mounting shaft 5 and a pawl return torsion spring 6; the driving portion 2 drives the parking bump 3 to linearly reciprocate, one side, away from the parking gear 1, of the pawl 4 is abutted to the parking bump 3, one side, facing the parking gear 1, of the pawl 4 is provided with a braking protrusion 41, the pawl 4 is mounted on the mounting shaft 5, the pawl 4 rotates around the mounting shaft 5, the pawl return torsion spring 6 is arranged around the mounting shaft 5, one end of the pawl return torsion spring 6 is connected with the pawl 4, and the other end of the pawl return torsion spring 6 is fixed; the driving part 2 drives the parking bump 3 to move in the parking direction, the protruding part of the parking bump 3 pushes the pawl 4 to rotate around the mounting shaft 5 to the parking gear 1, so that the pawl return torsion spring 6 is in a compressed state, and the braking protrusion 41 enters the tooth groove of the parking gear 1 to lock the parking.
For clarity, taking fig. 1 as an example, wherein the parking brake mechanism is in a parking state, the protruding portion of the parking projection 3 abuts against the pawl 4, the pawl return torsion spring 6 is in a compressed state, the braking protrusion 41 is located in the tooth slot of the parking gear 1, the pawl 4 cannot rotate around the mounting shaft 5 any more, the parking gear 1 cannot rotate any more, so that parking locking is achieved, the automobile can be reliably parked at a certain position even on a slope without time limitation, and the sliding of the automobile caused by the rotation of any wheel during parking is prevented. According to the position in fig. 1, the driving portion 2 drives the parking bump 3 to move leftwards, the protruding portion of the parking bump 3 is not abutted to the pawl 4 any more, the pawl return torsion spring 6 returns to the original state, the pawl 4 rotates anticlockwise around the mounting shaft 5 under the action of the pawl return torsion spring 6 return torsion force, the braking protrusion 41 is separated from the parking gear 1, and the parking gear is released by withdrawing from the tooth groove of the parking gear 1. In summary, the driving part 2 drives the parking cam 3 to move linearly and reciprocally, and the parking cam 3 can force the braking protrusion 41 of the pawl 4 to enter the tooth slot of the parking gear 1 or withdraw from the tooth slot of the parking gear 1, so as to park and release the parking, respectively.
The parking brake mechanism can be integrally installed in a box body of a transmission with narrow space, the driving part 2, the parking bump 3, the pawl 4, the installation shaft 5 and the pawl return torsion spring 6 are compounded into a brake module, the integrated design is convenient to process and install, the installation space is saved, and multiple areas on the box body of the transmission are not required to be processed to install the parking brake mechanism, when the parking brake mechanism is installed, only the parking gear 1 is required to be installed on a power transmission shaft, the brake module is installed on the box body of the transmission, the integrated design greatly reduces the processing cost of the box body, shortens the assembly time of the parking brake mechanism, effectively solves the problems that the traditional parking brake mechanism has too many installation parts on the box body of the transmission and the box body is difficult to process, and replaces the installation mode that parts of parking parts are respectively installed by the composite brake module, the production efficiency and the reliability of the assembly process are improved, the product quality is ensured, and the product cost is reduced.
It should be understood by those skilled in the art that the integrated parking brake mechanism shown in fig. 1 is only one embodiment of the present application, and the driving part 2 drives the parking bump 3 to move left to achieve parking and move right to release parking is only arranged for the specific structure shown in fig. 1, and is not intended to limit the protection scope of the present application. In addition, those skilled in the art will appreciate that the present application is not limited to being mounted to a transmission housing, but may be applied to other environments of use.
As an optional implementation manner of the integral parking brake mechanism, the driving portion 2 includes a driving member 21, a piston rod 22 and a piston return pressure spring 23, the driving member 21 drives the piston rod 22 to perform linear reciprocating motion, the piston rod 22 and the parking bump 3, and the piston return pressure spring 23 is sleeved on the piston rod 22. Therefore, referring to fig. 1, when the driving member 21 drives the piston rod 22 to move leftward, the piston return compression spring 23 is compressed, the parking bump 3 moves leftward under the return action of the piston return compression spring 23, the protruding portion of the parking bump 3 is no longer abutted to the pawl 4, the pawl return torsion spring 6 returns to the original state, the pawl 4 rotates counterclockwise around the mounting shaft 5 under the return torsion action of the pawl return torsion spring 6, the braking protrusion 41 of the pawl 4 exits from the tooth groove of the parking gear 1, the parking gear 1 can rotate freely, and parking is released. When the driving piece 21 drives the piston rod 22 to move rightwards under the parking releasing state, the piston return compression spring 23 is restored to the original state, the parking bump 3 moves rightwards, the protruding portion of the parking bump 3 is abutted to the pawl 4, the pawl 4 is driven to rotate clockwise around the mounting shaft 5, the pawl return torsion spring 6 is compressed, the braking protrusion 41 of the pawl 4 is located in the tooth groove of the parking gear 1, the pawl 4 cannot rotate around the mounting shaft 5 any more, the parking gear 1 cannot rotate any more, and parking locking is achieved. The driving part 2 is designed in such a way that each part is simple to process and convenient to install.
As an alternative implementation of the integrated parking brake mechanism, the driver 21 is a hydraulic driver 21, and the driving part 2 is provided with a solenoid valve. Setting the drive of the driver 21 as a hydraulic drive makes the mounting and the transmission of power simpler and more efficient than a drive motor.
As an optional implementation manner of the integral parking brake mechanism, the parking bump 3 moves in the opposite direction of the parking direction, so that the piston return compression spring 23 is compressed and deformed; the parking bump 3 moves towards the parking direction, so that the piston return pressure spring 23 is restored to the original state.
Therefore, during parking, the automobile ECU sends a command signal to the electromagnetic valve of the hydraulic cylinder, the electromagnetic valve push rod is withdrawn from the clamping groove of the hydraulic cylinder piston (the electromagnetic valve push rod and the clamping groove are transversely arranged in the piston rod 22 and are not shown in the figure), meanwhile, the hydraulic cylinder is used for releasing pressure, the piston rod 22 returns under the action of the piston return pressure spring 23 at the moment, the hydraulic cylinder returns, the parking bump 3 moves rightwards, the protruding part of the parking bump 3 is abutted to the pawl 4, the pawl 4 is driven to rotate clockwise around the mounting shaft 5, the pawl return torsion spring 6 is compressed, the braking protrusion 41 of the pawl 4 is positioned in the tooth groove of the parking gear 1, the pawl 4 cannot rotate around the mounting shaft 5 any more, and the parking gear 1 cannot rotate any more, so that parking locking is realized. Referring to fig. 1, when parking is released, hydraulic oil inside the hydraulic cylinder is pressurized, hydraulic pressure pushes the piston rod 22 to be ejected leftwards, the piston return compression spring 23 is compressed, the piston rod 22 pushes the parking bump 3 to move leftwards, the protruding portion of the parking bump 3 is not abutted to the pawl 4 any more, the pawl return torsion spring 6 is restored to the original state, under the action of the return torsion of the pawl return torsion spring 6, the pawl 4 rotates anticlockwise around the mounting shaft 5, the braking protrusion 41 of the pawl 4 exits from the tooth groove of the parking gear 1, the parking gear 1 can rotate freely, and parking is released. When with this hydraulic drive piece 21 release pressure, parking brake mechanism is in the parking state, and when hydraulic drive piece 21 pressurizes, parking brake mechanism is in and removes the parking state, simple structure, and when hydraulic drive piece 21 pressurizes, parking brake mechanism could remove the parking, avoids hydraulic drive piece 21 hydraulic oil to leak and leads to swift current car, safe and reliable.
As an optional implementation mode of the integral parking brake mechanism, the parking brake mechanism further comprises a parking push rod 7, one end of the parking push rod 7 is arranged along the moving direction of the parking bump 3 and connected with the parking bump 3, and the other end of the parking push rod 7 is fixed. Parking push rod 7 moves with parking lug 3 jointly, strengthens parking lug 3's direction and spacing for parking lug 3's removal safe and reliable, thereby guarantee parking brake mechanism's function.
As an optional implementation mode of the integral parking braking mechanism, the parking braking mechanism further comprises a push rod return pressure spring 71, and the parking push rod 7 is sleeved with the push rod return pressure spring 71. Thus, referring to fig. 1, when the parking is released, the piston rod 22 moves leftward, the parking cam 3 moves leftward in synchronization, and the push rod return pressure spring 71 is compressed. When parking, the piston rod 22 moves rightwards, the piston rod 22 does not apply leftward acting force to the parking bump 3 any more, the push rod return compression spring 71 recovers to the original state, the parking bump 3 moves rightwards under the action of deformation recovery force of the push rod return compression spring 71, the protruding portion of the parking bump 3 is abutted with the pawl 4, the braking protrusion 41 is forced to enter a tooth groove of the parking gear 1, and parking locking is achieved.
As an optional realization mode of integral parking braking mechanism, this application still includes connecting plate 8, parking push rod 7 one end with connecting plate 8 fixed connection, installation axle 5 install in connecting plate 8. Connecting plate 8 can play fixed and connected effect, forms each part an organic whole, and during installation parking braking mechanism, only need to install parking push rod 7, parking lug 3, pawl 4, installation axle 5, pawl return torsional spring 6 on connecting plate 8 in advance, then with connecting plate 8 install in the box of gearbox can, require simply to the machining of the box of derailleur, easily installation, occupation space is little. Referring to fig. 1, the driving part 2 is also mounted to the connecting plate 8, so that the parts are connected together to form a whole, thereby facilitating shipment and packaging as well as assembly.
It will be understood by those skilled in the art that the relative positions of the driver 2 and the pawl 4 may be relatively rotated and translated as desired to accommodate different assembly spaces, and are not limited to the structural arrangement shown in fig. 1, which should not be taken as limiting the present application.
As an optional implementation manner of the integral parking brake mechanism, the parking brake mechanism further includes a guide limiting part 9, the guide limiting part 9 is connected with the parking projection 3 in a manner of being far away from one side of the parking gear 1 in an abutting manner, and the parking projection 3 is far away from one side of the pawl 4 along the profile of the guide limiting part 9. Therefore, the guiding and limiting part 9 can provide guiding and limiting effects for the parking bump 3 to do linear reciprocating movement.
As an alternative implementation of the integrated parking brake mechanism, the protruding portion of the parking cam 3 is provided with a rolling member 31, and the rolling member 31 rolls along the profile of the pawl 4 at the position where the pawl 4 abuts against the parking cam 3. Therefore, the abutting and the relative movement of the parking bump 3 and the pawl 4 are smoother, the friction is reduced, the service life of parts is prolonged, and the working reliability of the parking braking mechanism is improved.
As an optional implementation manner of the integral parking brake mechanism, one side of the pawl 4, which is far away from the parking gear 1, is provided with an arc-shaped transmission protrusion 42 corresponding to the position of the brake protrusion 41, the arc-shaped transmission protrusion 42 is abutted to the parking bump 3, and the arc-shaped transmission protrusion 42 protrudes towards one side, which is far away from the parking gear 1. Therefore, the convex part of the braking bulge 41 can be abutted with the pawl 4 along the outline of the arc-shaped transmission bulge 42, so that when parking and releasing parking, the relative movement of the braking bulge and the pawl is smoother, the collision and friction between parts are reduced, the service life of the parts is prolonged, and the working reliability of the parking braking mechanism is improved.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. An integrated parking brake mechanism, comprising:
the parking gear is mounted on the power transmission shaft; and the combination of (a) and (b),
the brake module comprises a driving part, a parking bump, a pawl, a mounting shaft and a pawl return torsion spring; the driving part drives the parking bump to linearly reciprocate, one side of the pawl, which is far away from the parking gear, abuts against the parking bump, one side of the pawl, which faces the parking gear, is provided with a braking bulge, the pawl is mounted on the mounting shaft, the pawl rotates around the mounting shaft, the pawl return torsion spring is arranged around the mounting shaft, one end of the pawl return torsion spring is connected with the pawl, and the other end of the pawl return torsion spring is fixed;
the driving part drives the parking lug to move towards the parking direction, the protruding part of the parking lug pushes the pawl to wind the installation shaft direction the parking gear rotates in the direction, the pawl return torsion spring is in a compression state, and the braking protrusion enters into a tooth groove of the parking gear to lock the parking gear.
2. The integrated parking brake mechanism according to claim 1, wherein the driving part comprises a driving member, a piston rod and a piston return pressure spring, the driving member drives the piston rod to reciprocate linearly, the piston rod and the parking protrusion block, and the piston return pressure spring is sleeved on the piston rod.
3. An integrated parking brake mechanism according to claim 2, wherein the actuator is a hydraulic actuator and the actuator is provided with a solenoid valve.
4. The integrated parking brake mechanism according to claim 3, wherein the parking projection moves in a direction opposite to the parking direction, so that the piston return compression spring is compressed and deformed;
the parking bump moves towards the parking direction, so that the piston return pressure spring is restored to the original state.
5. The integrated parking brake mechanism according to claim 1, further comprising a parking push rod, wherein one end of the parking push rod is connected with the parking bump along the moving direction of the parking bump, and the other end of the parking push rod is fixed.
6. The integrated parking brake mechanism according to claim 5, further comprising a push rod return compression spring sleeved on the parking push rod.
7. The integrated parking brake mechanism according to claim 5, further comprising a connecting plate, wherein one end of the parking push rod is fixedly connected with the connecting plate, and the mounting shaft is mounted on the connecting plate.
8. The integrated parking brake mechanism according to claim 1, further comprising a guide limit member abutting against a side of the parking projection away from the parking gear, wherein the side of the parking projection away from the pawl moves along a contour of the guide limit member.
9. An integrated parking brake mechanism according to claim 1, wherein the raised portion of the parking cam is provided with a roller that rolls along the pawl profile at the position where the pawl abuts the parking cam.
10. The integral parking brake mechanism according to claim 1, wherein an arc-shaped transmission protrusion corresponding to the position of the brake protrusion is arranged on one side, away from the parking gear, of the pawl, the arc-shaped transmission protrusion abuts against the parking bump, and the arc-shaped transmission protrusion protrudes towards one side, away from the parking gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220135514.8U CN216951615U (en) | 2022-01-19 | 2022-01-19 | Integral parking braking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220135514.8U CN216951615U (en) | 2022-01-19 | 2022-01-19 | Integral parking braking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951615U true CN216951615U (en) | 2022-07-12 |
Family
ID=82316674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220135514.8U Active CN216951615U (en) | 2022-01-19 | 2022-01-19 | Integral parking braking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951615U (en) |
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2022
- 2022-01-19 CN CN202220135514.8U patent/CN216951615U/en active Active
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