CN219827675U - Electromagnetic valve driven parking braking mechanism - Google Patents
Electromagnetic valve driven parking braking mechanism Download PDFInfo
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- CN219827675U CN219827675U CN202223282943.7U CN202223282943U CN219827675U CN 219827675 U CN219827675 U CN 219827675U CN 202223282943 U CN202223282943 U CN 202223282943U CN 219827675 U CN219827675 U CN 219827675U
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- parking
- pull rod
- taper pin
- pawl
- brake mechanism
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- 230000007246 mechanism Effects 0.000 title claims abstract description 35
- 230000005540 biological transmission Effects 0.000 abstract description 16
- 238000009434 installation Methods 0.000 abstract description 3
- 210000001503 joint Anatomy 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 7
- 230000035939 shock Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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Abstract
The utility model discloses a parking brake mechanism driven by an electromagnetic valve, which comprises a parking gear, a parking pawl, a parking electromagnetic valve and a parking pull rod, wherein the free end of the parking pawl can enter into or depart from a tooth slot of the parking gear; the push rod can extend out of or retract into the valve body when the parking electromagnetic valve is electrified in the forward direction or the reverse direction; one end of the parking pull rod is hinged with the push rod, and the other end of the parking pull rod is provided with a parking taper pin; the parking taper pin is a cone, and one side of the parking taper pin is always in butt joint with the side surface, far away from the parking gear, of the free end of the parking pawl; when the push rod stretches out or retracts into the valve body, the parking pull rod can drive the side surface of the parking taper pin to push the parking pawl to enter the tooth slot of the parking gear. The electromagnetic valve is used for replacing the traditional parking driving motor, so that the power transmission route is simplified, structural parts are reduced, complex calculation and installation are not needed, and the transmission is reliable.
Description
Technical Field
The utility model relates to the technical field of parking brake mechanisms, in particular to a parking brake mechanism driven by an electromagnetic valve.
Background
In order to prevent the vehicle from slipping or sliding after the vehicle is stopped, a parking brake mechanism is designed for a transmission of a fuel-fired vehicle or an electric drive system of a new energy vehicle so that the vehicle can reliably and time-limitlessly park at a certain position or even on a slope. The parking mechanism is an essential mechanism in an automatic transmission or a new energy electric drive system.
The traditional electronic parking mechanism design is that a parking motor is used as a driving element for executing parking action, a parking operating lever is connected with the parking motor, a parking pull rod is hinged on a tooth plate after the tooth plate is connected with the parking operating lever, and a parking pawl is pushed by a parking taper pin of the pull rod to realize parking locking. However, the design has a longer power transmission route, involves more complicated space geometry design and calculation, has more parts, and is complicated and difficult to install.
Therefore, it is necessary to simplify the power transmission path of the parking mechanism and reduce the parts.
Disclosure of Invention
The utility model aims to provide a solenoid valve driven parking brake mechanism which uses a solenoid valve to replace a traditional parking driving motor, a parking pull rod is hinged on an output push rod of the solenoid valve, the solenoid valve drives the push rod to move linearly, the parking pull rod can be pushed and pulled, the end part of the parking pull rod is provided with a parking taper pin with a large end size and a small end size, the parking pawl always depends on one side of the parking taper pin, and the parking pull rod can drive the parking taper pin to move when being pushed and pulled, so that the parking pawl is pushed by the contour of the parking taper pin and can enter or exit a tooth slot of the parking gear to park or release parking, therefore, power can be transmitted to the parking pawl through the solenoid valve push rod, the parking pull rod and the parking taper pin, the power transmission path is simplified, the parts are reduced, complex calculation and installation are not needed, and transmission is reliable.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a solenoid valve driven parking brake mechanism, includes parking gear and parking pawl, the free end of parking pawl can get into or deviate from the tooth's socket of parking gear, it still includes parking solenoid valve and parking pull rod, wherein:
the parking electromagnetic valve is arranged on the gearbox shell and comprises a valve body and a push rod; the push rod can extend out of or retract into the valve body when the parking electromagnetic valve is electrified in the forward direction or the reverse direction; one end of the parking pull rod is hinged with the push rod, and the other end of the parking pull rod is provided with a parking taper pin; the parking taper pin is a cone, and one side of the parking taper pin is always in abutting connection with the side surface, far away from the parking gear, of the free end of the parking pawl; when the push rod stretches out or retracts into the valve body, the parking pull rod can drive the side face of the parking taper pin to push the parking pawl to enter a tooth slot of the parking gear.
As a preferred implementation of the solenoid-operated parking brake mechanism, it further comprises a guide member which abuts against a side of the parking cone pin facing away from the free end of the parking pawl; the guiding direction of the guiding piece is parallel to the central axis of the parking taper pin.
As a preferred embodiment of a solenoid-operated parking brake mechanism, the guide element has a guide groove which engages with the contour of the parking cone pin.
As a preferred embodiment of the solenoid-operated parking brake mechanism, the parking lever and the push rod have an angle of less than 180 ° and greater than or equal to 100 °.
As a preferred implementation of a solenoid actuated parking brake mechanism, the parking cone pin has a first end and a second end, the first end having a radial dimension greater than the second end; the parking pull rod is connected with the first end.
As a preferred implementation of the solenoid-operated parking brake mechanism, the parking lever comprises a straight lever section and a curved lever section which are connected, the curved lever section is a curved lever, and the curved lever section is hinged with one end of the push rod.
As a preferable implementation mode of the electromagnetic valve driven parking brake mechanism, the parking taper pin is internally communicated, the parking taper pin is sleeved outside the parking pull rod, a spring is sleeved outside the parking pull rod, and the spring is positioned in a gap between the parking pull rod and the parking taper pin.
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 do not constitute a limitation on the utility model. In the drawings:
FIG. 1 is a schematic diagram of a front view of an embodiment of the present utility model;
FIG. 2 is a schematic perspective view of an embodiment of the present utility model;
FIG. 3 is an enlarged schematic view of the structure of the guide in one embodiment of the utility model;
fig. 4 is an enlarged schematic view of the structure of the solenoid valve, push rod, and parking lever according to an embodiment of the present utility model.
The reference numerals in the drawings illustrate:
1. a parking gear;
2. a parking pawl; 21. a return spring;
3. a parking electromagnetic valve; 31. a push rod;
4. a parking pull rod; 41. a straight rod section; 42. a curved bar section;
5. parking taper pin;
6. a guide member; 61. a guide groove.
Detailed Description
For a clearer understanding of the technical features, objects and effects of the present utility model, embodiments of the present utility model will now be described with reference to the drawings, in which like reference numerals refer to identical or structurally similar but functionally identical components throughout the separate views.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.
Referring to fig. 1-4, the utility model provides a solenoid valve driven parking brake mechanism, which comprises a parking gear 1 and a parking pawl 2, wherein the free end of the parking pawl 2 can enter or depart from a tooth slot of the parking gear 1, and the solenoid valve driven parking brake mechanism further comprises a parking solenoid valve 3 and a parking pull rod 4, wherein:
the parking electromagnetic valve 3 is arranged on the gearbox shell, and the parking electromagnetic valve 3 comprises a valve body and a push rod 31; the push rod 31 can extend out of or retract into the valve body when the parking electromagnetic valve 3 is electrified in the forward direction or the reverse direction; one end of the parking pull rod 4 is hinged with the push rod 31, and the other end is provided with a parking taper pin 5; the parking taper pin 5 is a cone, and one side of the parking taper pin 5 is always in abutting connection with the side surface, far away from the parking gear 1, of the free end of the parking pawl 2; when the push rod 31 stretches out or retracts into the valve body, the parking pull rod 4 can drive the side face of the parking taper pin 5 to push the parking pawl 2 to enter the tooth slot of the parking gear 1.
It will be appreciated by those skilled in the art that the transmission housing is provided with a mounting shaft which is perpendicular to the parking gear 1, the parking pawl 2 is mounted on the mounting shaft so as to be rotatable about the shaft, and the parking pawl 2 is further provided with a return spring 21, one end of the return spring 21 being fixed to the transmission housing and the other end of the return spring pressing the parking pawl 2 and retaining a certain pre-pressure.
From above, when the electromagnetic valve is electrified forward or reversely, the push rod 31 can extend out or retract into the valve body, so that the parking pull rod 4 hinged with the push rod 31 is driven to perform linear motion, and when the parking pull rod 4 performs linear motion, the parking taper pin 5 at the end part of the parking pull rod 4 also performs linear motion. The parking pawl 2 is the cone, and one end size is big, and one end size is little, because the free end of parking pawl 2 is the butt all the time on the outer wall of parking taper pin 5, and when parking taper pin 5 rectilinear motion, the free end of parking pawl 2 and the butt part of parking taper pin 5 can become the tip from big end to little or become the tip from little to big to the relative distance between parking pawl 2 and parking gear 1 changes, and parking pawl 2 can rotate around the pin joint, thereby gets into or deviate from the tooth's socket of parking gear 1, carries out parking or releases the parking.
In this embodiment, the electromagnetic valve is used to replace the traditional parking driving motor, and the push rod 31 of the electromagnetic valve is hinged with the parking pull rod 4, so that the shock resistance is improved, the power transmission is stable, the power can be directly transmitted to the parking pawl 2 through the electromagnetic valve push rod 31, the parking pull rod 4 and the parking taper pin 5, the power transmission route is simplified, the structural parts are reduced, complex calculation and installation are not needed, and the transmission is reliable.
In this embodiment, when the solenoid valve is energized in the reverse direction, the pushrod 31 is retracted into the valve body. In other embodiments, the pushrod 31 may extend out of the valve body when the solenoid valve is energized in reverse.
In a specific embodiment of the solenoid-operated parking brake mechanism, it further comprises a guide member 6, the guide member 6 being in abutment with the side of the parking cone pin 5 facing away from the free end of the parking pawl 2; the guiding direction of the guiding piece 6 is parallel to the central axis of the parking taper pin 5. With this, parking taper pin 5 one side and parking pawl 2 butt always, one side and guide 6 butt always, and guide 6 is the mounting, can fixed connection on the gearbox casing, can provide firm direction, spacing effect for parking taper pin 5, makes its power transmission more reliable.
In other embodiments, the guide member 6 may also be in other forms, such as a guide rod connected to the shaft hole of the parking pull rod 4, such as a guide sleeve connected to the shaft hole of the parking taper pin 5, and may also be in a guide rail slider structure.
In a specific embodiment of a solenoid actuated parking brake mechanism, the guide 6 has a guide groove 61 which is in contour fit with the parking cone pin 5. In this way, when the parking taper pin 5 moves linearly along with the parking pull rod 4, the parking taper pin can move along the guide groove 61 matched with the guide piece 6 in profile, so that the rotation of the parking pawl 2 is smoother.
In one embodiment of a solenoid actuated parking brake mechanism, the parking pull rod 4 and push rod 31 have an included angle of less than 180 ° and greater than or equal to 100 °. With this, the shock resistance between the push rod 31 and the parking pull rod 4 is increased, so that the linear motion is smoother and gentler, and the safety of the parking brake mechanism is improved.
In one embodiment of a solenoid actuated parking brake mechanism, the parking cone pin 5 has a first end and a second end, the first end having a radial dimension greater than the second end; the parking lever 4 is connected to the first end. Accordingly, when the parking pull rod 4 is pushed away from the valve body by the push rod 31, the parking pawl 2 abuts against the first end with a larger radial dimension, the distance between the parking pawl 2 and the parking gear 1 is reduced, and the parking pawl 2 enters into the tooth groove of the parking gear 1 to perform parking. When the parking pull rod 4 is pulled to a direction approaching the valve body by the push rod 31, the parking pawl 2 is abutted with the second end with smaller radial size, so that the distance between the parking pawl 2 and the parking gear 1 is increased, the parking pawl 2 is withdrawn from the tooth slot of the parking gear 1, and the parking is released.
In one embodiment of a solenoid actuated parking brake mechanism, the parking lever 4 includes a straight lever section 41 and a curved lever section 42 connected, the curved lever section 42 being a curved lever, the curved lever section 42 being hinged to one end of the push rod 31. With this, the shock resistance of the power transmission between the parking pull rod 4 and the push rod 31 is improved, and the linear motion of the push rod 31 is more smoothly and gently transmitted to the parking pull rod 4, so that the performance of the parking brake mechanism is more stable and reliable.
In a specific embodiment of a solenoid valve driven parking brake mechanism, a parking taper pin 5 is internally penetrated, the parking taper pin 5 is sleeved outside a parking pull rod 4, a spring is sleeved outside the parking pull rod 4, and the spring is positioned in a gap between the parking pull rod 4 and the parking taper pin 5. In this way, the power transmission between the parking lever 4 and the parking taper pin 5 is elastic, and the elastic buffer function can be provided when the parking pawl 2 abuts against the tooth end of the parking gear 1. Specifically, referring to fig. 1, when parking, the parking pull rod 4 is pushed in a direction away from the valve body, when the parking pawl 2 is abutted against the tooth end of the parking gear 1, the parking pawl 2 is clamped between the parking gear 1 and the parking taper pin 5, the parking taper pin 5 cannot move, the spring is in a compressed state, on one hand, the movement of the parking taper pin 5 is buffered, and on the other hand, the solenoid valve is prevented from being blocked.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.
Claims (7)
1. The utility model provides a solenoid valve driven parking brake mechanism, includes parking gear and parking pawl, the free end of parking pawl can get into or deviate from the tooth's socket of parking gear, its characterized in that includes:
the parking electromagnetic valve is arranged on the gearbox shell and comprises a valve body and a push rod; the push rod can extend out of or retract into the valve body when the parking electromagnetic valve is electrified in the forward direction or the reverse direction;
one end of the parking pull rod is hinged with the push rod, and the other end of the parking pull rod is provided with a parking taper pin; the parking taper pin is a cone, and one side of the parking taper pin is always in abutting connection with the side surface, far away from the parking gear, of the free end of the parking pawl; when the push rod stretches out or retracts into the valve body, the parking pull rod can drive the side face of the parking taper pin to push the parking pawl to enter a tooth slot of the parking gear.
2. The solenoid actuated parking brake mechanism of claim 1, further comprising a guide member abutting a side of said parking cone pin facing away from a free end of said parking pawl; the guiding direction of the guiding piece is parallel to the central axis of the parking taper pin.
3. A solenoid actuated parking brake mechanism as defined in claim 2, wherein said guide member has a guide groove which mates with said parking cone pin profile.
4. A solenoid actuated parking brake mechanism as defined in claim 1 wherein said parking pull rod and said push rod have an included angle therebetween of less than 180 ° and greater than or equal to 100 °.
5. A solenoid actuated parking brake mechanism as defined in claim 1, wherein said parking cone pin has a first end and a second end, said first end having a radial dimension greater than said second end; the parking pull rod is connected with the first end.
6. A solenoid actuated parking brake mechanism as defined in claim 1 wherein said parking pull rod includes a straight rod section and a curved rod section connected, said curved rod section being a curved rod section, said curved rod section being hinged to one end of said push rod.
7. The solenoid actuated parking brake mechanism of claim 1, wherein said parking taper pin is internally through, said parking taper pin is sleeved outside said parking pull rod, said parking pull rod is externally sleeved with a spring, said spring is positioned in a gap between said parking pull rod and said parking taper pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223282943.7U CN219827675U (en) | 2022-12-05 | 2022-12-05 | Electromagnetic valve driven parking braking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223282943.7U CN219827675U (en) | 2022-12-05 | 2022-12-05 | Electromagnetic valve driven parking braking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219827675U true CN219827675U (en) | 2023-10-13 |
Family
ID=88282114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223282943.7U Active CN219827675U (en) | 2022-12-05 | 2022-12-05 | Electromagnetic valve driven parking braking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219827675U (en) |
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2022
- 2022-12-05 CN CN202223282943.7U patent/CN219827675U/en active Active
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