CN210461661U - Electro-hydraulic parking locking mechanism - Google Patents
Electro-hydraulic parking locking mechanism Download PDFInfo
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- CN210461661U CN210461661U CN201920961627.1U CN201920961627U CN210461661U CN 210461661 U CN210461661 U CN 210461661U CN 201920961627 U CN201920961627 U CN 201920961627U CN 210461661 U CN210461661 U CN 210461661U
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Abstract
The utility model relates to an electro-hydraulic parking locking mechanism, which comprises a locking pin, an electromagnet used for absorbing or repelling the locking pin and a piston with one end connected to the parking mechanism through a push rod pin; the side wall of the piston is provided with an L-shaped groove, the lower flat part of the L-shaped groove is in the same direction with the running direction of the piston, and the upper vertical part of the L-shaped groove is vertical to the running direction of the piston; one end of the locking pin is slidably arranged in the L-shaped groove, the other end of the locking pin is fixed to a fixed point I through a return spring, and the elastic direction of the return spring is parallel to the upper vertical part of the L-shaped groove; the electromagnet is arranged at a fixed point III in the elastic direction of the reset spring or in the parallel direction of the reset spring, or at the tail end of the upper vertical part of the L-shaped groove or at the inflection point between the upper vertical part and the lower flat part of the L-shaped groove. The beneficial effects of the utility model are that with "L" type groove and got rid of locking plate mechanism to single round pin carries out parking locking and unblock, reduces the part, compact structure.
Description
Technical Field
The utility model relates to an electricity liquid parking locking mechanism for collocation electron vehicle of shifting.
Background
Along with the development of electrification and automation in the automobile industry, more and more automobiles adopt electronic gear shifting systems. An electro-hydraulic parking locking mechanism is mostly adopted in a parking system of the vehicle to control parking and unlocking. The electro-hydraulic parking locking mechanism requires that the parking mechanism can be locked at a P gear and cannot be separated when a vehicle is parked; when the vehicle runs or is in a neutral gear, the parking mechanism is required to be locked in the N gear and cannot act randomly. The most common electro-hydraulic parking locking mechanism on the market generally comprises a locking plate and a locking pin which are used for respectively controlling the positioning and the locking of the P gear and the N gear. On the premise of meeting the functionality, an actuating mechanism with low cost and bidirectional locking needs to be developed.
Common electro-hydraulic parking locking mechanism in market keeps off locking and N fender locking through locking plate and locking round pin control piston respectively. When parking, the electromagnetic valve is electrified, the locking plate is pressed down by the electromagnetic valve pin, the piston moves forwards under the thrust action of the piston spring, and the locking pin positions the parking position to complete parking. When the parking unlocking is carried out, the piston is pushed by the piston hydraulic pressure to move in a horizontal moving mode and reset, the locking plate is pressed into the locking plate groove under the action of the locking plate spring to be locked, and the parking unlocking is completed.
In an attempt to overcome the deficiencies of the prior art, there is provided in the prior art a mechanical lock force transmitting device for a gearshift of an automatic transmission vehicle, having application number CN201420637602.3, mounted on the gearshift, comprising: unlocking the rotary rocker arm; the upper end of the dowel bar is arranged on the upper end and the lower end of the panel of the gear shifter in a penetrating way and is abutted to the unlocking rotary rocker arm; the electromagnetic valve comprises a piston arranged in the valve body, a piston rod of the piston is connected with the unlocking rotary rocker arm, the piston rod moves back and forth in the electromagnetic valve according to the rotation of the unlocking rotary rocker arm, when the unlocking rotary rocker arm rotates clockwise and downwards under the force of the force transmission rod, the piston rod moves towards the interior of the valve body, the electromagnetic valve is opened for unlocking, and when the unlocking rotary rocker arm returns upwards anticlockwise, the piston rod moves towards the direction of returning; the unlocking rotary rocker arm is rotatably arranged on the rocker arm rotating shaft and is positioned at the lower end of the dowel bar, the rocker arm rotating shaft is arranged on the gear shifter, the unlocking rotary rocker arm comprises a shaft sleeve and a rocker arm body which are rotatably matched with the rocker arm rotating shaft, and the rocker arm body is arranged on one side of the shaft sleeve and is positioned below the unlocking limit wall; the rocker arm body is also provided with a connecting column for connecting the piston rod. The guide rod comprises a transverse rod and a vertical rod connected to the lower end face of the transverse rod, and the stress rod is vertically arranged on the upper end face of the transverse rod; the lower end face of the transverse rod is also provided with a vertically downward guide post, a post groove matched with the guide post is formed in the gear shifter, a guide spring is arranged in the post groove, and the guide post is inserted in the post groove and is positioned above the guide spring. The rocker arm comprises a push rod pin, a connecting column, a rocker arm body, a piston rod, a reset structure and an electromagnetic valve, wherein the rocker arm body, the piston rod, the reset structure and the electromagnetic valve are arranged below the push rod pin and the connecting column and a dowel bar, but the motion of a groove model and a locking pin is not involved, so that the piston rod cannot be limited only by adjusting the motion of the locking pin.
The key point of the tension spring lock is that the tension spring lock comprises a lock cylinder, a spring core, a lock cylinder and a pull rod, a pin head is arranged at the front end of the lock cylinder, the spring core is compressed in the lock cylinder by the pin head, an L-shaped sliding groove is formed in the wall of the lock cylinder, and the pull rod penetrates through the L-shaped sliding groove and is fixedly connected with the lock cylinder. The tail end of the lock cylinder is provided with a through hole, the rear end of the lock cylinder penetrates through the through hole, and a pull ring is fixedly connected to the rear end of the lock cylinder. And a chamfer is arranged on the side surface of the pull ring. The short edge of the L-shaped sliding groove is provided with a positioning groove. The front end of the pin head is provided with an inclined plane. Although the pull rod, lock cylinder and its L-shaped slot are disclosed, no specific movement mechanism for the pull rod is disclosed, only by manual operation. Meanwhile, the device is not a technical scheme in the field of vehicles, and is difficult to show technical inspiration for improvement of the vehicle electro-hydraulic parking locking mechanism.
The intelligent reverse gear locking device for the automobile gearbox with the application number of CN201410045583.X comprises an electromagnet, a gear lever, a guide pin, a lock pin, a shifting fork shaft, a lock nut, a limiting pin and a spring. The lock pin is arranged in the shifting block, the shifting block is fixed at the end part of the shifting fork shaft through a screw, a spring with certain elasticity and pretightening force is arranged at the left side of the lock pin, and a V-shaped groove is radially formed at the right end of the lock pin; the electromagnet is vertically fixed on the gearbox cover, and the lower end of the V-shaped electromagnet iron core is over against the radial V-shaped groove at the right end of the lock pin. Although electromagnets, cores, dials and their V-grooves and springs are disclosed, no more optimal form of movement of the dials is disclosed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art not enough, solve single round pin and carry out parking locking and unblock simultaneously, promote the compactedness of locking mechanism part.
In order to achieve the aim, the invention provides an electro-hydraulic parking locking mechanism which comprises a locking pin, an electromagnet and a piston, wherein the electromagnet is used for adsorbing or repelling the locking pin, and one end of the piston is connected to the parking mechanism through a push rod pin; the side wall of the piston is provided with an L-shaped groove, the lower flat part of the L-shaped groove is in the same direction with the running direction of the piston, and the upper vertical part of the L-shaped groove is vertical to the running direction of the piston; one end of the locking pin is slidably arranged in the L-shaped groove, the other end of the locking pin is fixed to a fixed point I through a return spring, and the elastic direction of the return spring is parallel to the upper vertical part of the L-shaped groove; the electromagnet is arranged at a fixed point III in the elastic direction of the reset spring or in the parallel direction of the reset spring, or at the tail end of the upper vertical part of the L-shaped groove or at the inflection point between the upper vertical part and the lower flat part of the L-shaped groove.
The locking pin is made of ferromagnetic material or magnet.
According to the disclosure, the piston cooperates with the piston cylinder to realize the linear reciprocating motion of the piston in the piston cylinder, and the motion direction of the piston is limited by the cooperation of the shape of the piston and the piston cylinder.
The L-shaped groove disclosed by the invention is in an L shape in the direction of the side wall surface of the piston, and the folded angle position between the upper vertical part and the lower flat part of the L shape is the position of the bent point. The locking pin is inserted into the L-shaped groove and slides in the L-shaped groove. The tail end of the upper vertical part of the L-shaped groove refers to the other end of the upper vertical part relative to the position of the inflection point.
The fixed point refers to a fixed position independent of the piston, the piston generally forms relative motion with the fixed position, and the fixed point can be specifically arranged on parts such as a piston cylinder, a vehicle body, a vehicle chassis, an engine and the like.
Preferably, the return spring is in the form of a plate spring, one end of which fixes the other end of the locking pin, and the other end of which is fixed to the fixing point I.
The leaf spring disclosed herein is constructed by fixing the other end such that the direction of the elastic force is perpendicular to the leaf spring body, i.e., one end thereof can perform a reciprocating motion perpendicular to the leaf spring body.
Preferably, the other end of the piston is provided with a pit, and the pit is communicated with the bottom of the L-shaped groove; one end of the plate spring is arranged in the cavity of the concave pit.
Preferably, the return spring is in the form of a helical spring which is subjected to axial tension or compression.
Preferably, the other end of the piston is fixed to the fixing point II through a piston spring, and the elastic force direction of the piston spring is the same as the piston running direction.
The piston spring disclosed herein may take a variety of forms, such as a coil spring, a leaf spring, a volute spring, and the like.
Preferably, the side wall of the piston for arranging the L-shaped groove is a flat surface, and the wall of the L-shaped groove is perpendicular to the flat surface.
The piston flat surface disclosed herein may be only a portion of the piston, and the locking pin may be conveniently inserted if the flat surface is always outside the piston cylinder.
The L-shaped groove and the locking pin thereof are matched with the reset spring and the electromagnet to provide two states of locking and moving for the piston.
The leaf spring form facilitates the selective setting of the fixing point I, since the other end thereof can extend far from the piston.
One end of the plate spring is arranged in the cavity of the pit, so that the external space of the piston is saved, and the influence of the external environment on the plate spring is avoided.
The directionality of the extension or contraction in the form of a tension or compression coil spring is closer to a straight line so that it does not easily slip in the upstand.
The design of piston spring can reduce or even save the translation power that the piston cylinder provided for the piston, reduces the required design volume of piston cylinder.
The groove wall of the L-shaped groove is perpendicular to the flat surface, so that the locking pin, the reset spring and the electromagnet are more compact and close to the piston.
The beneficial effects of the utility model are that designed "L" type groove for the locking, got rid of locking plate mechanism, used single round pin to carry out parking locking and unblock, reduce part, compact structure.
Drawings
FIG. 1 is a schematic diagram of a common locking plate type electro-hydraulic parking locking mechanism in the prior art;
FIG. 2 is a schematic view of the electro-hydraulic parking lock mechanism of the present invention;
fig. 3 is an overall schematic view of a piston of the electro-hydraulic parking locking mechanism of the present invention;
fig. 4 is a schematic view of a first embodiment of a return spring of the electro-hydraulic parking lock mechanism of the present invention;
fig. 5 is a schematic view of a second embodiment of a return spring of the electro-hydraulic parking lock mechanism of the present invention;
FIG. 6 is a schematic view of the working principle of the electro-hydraulic parking lock mechanism of the present invention when the gear is N-P;
FIG. 7 is a schematic view of the working principle of the electro-hydraulic parking lock mechanism of the present invention when the P-N gear is engaged;
wherein:
1-piston 11- 'L' -shaped groove 2-push rod pin
3-piston spring 4-locking pin 5-reset spring
6-electromagnet
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
According to a first embodiment of the electro-hydraulic parking lock mechanism shown in fig. 2 to 4, the electro-hydraulic parking lock mechanism comprises a lock pin 4, an electromagnet 6 for absorbing or repelling the lock pin 4 and a piston 1, wherein one end of the piston is connected to the parking mechanism through a push rod pin 2; the side wall of the piston 1 is provided with an L-shaped groove 11, the lower flat part of the L-shaped groove 11 is in the same direction with the running direction of the piston 1, and the upper vertical part of the L-shaped groove 11 is vertical to the running direction of the piston 1; one end of the locking pin 4 is slidably arranged in the L-shaped groove 11, the other end of the locking pin 4 is fixed to a fixed point I through a return spring 5, and the elastic direction of the return spring 5 is parallel to the upper vertical part of the L-shaped groove 11; the electromagnet 6 is provided at a fixed point III in the direction parallel to the elastic force direction of the return spring 5. The return spring 5 is in the form of a plate spring, one end of which fixes the other end of the locking pin 4, the other end of which is fixed to the fixing point I. The other end of the piston 1 is provided with a pit which is communicated with the bottom of the L-shaped groove 11; one end of the plate spring is bifurcated, two bifurcated ends are respectively arranged in the cavity and outside the cavity of the pit, and the two bifurcated ends are simultaneously fixed to the locking pin 4. The other end of the piston 1 is fixed to a fixed point II through a piston spring 3, and the elastic force direction of the piston spring 3 is the same as the running direction of the piston 1.
According to a second embodiment of the electro-hydraulic parking lock mechanism shown in fig. 5 to 7, the electro-hydraulic parking lock mechanism comprises a lock pin 4, an electromagnet 6 for adsorbing the lock pin 4 and a piston 1, wherein one end of the piston is connected to the parking mechanism through a push rod pin 2; the side wall of the piston 1 is provided with an L-shaped groove 11, the lower flat part of the L-shaped groove 11 is in the same direction with the running direction of the piston 1, and the upper vertical part of the L-shaped groove 11 is vertical to the running direction of the piston 1; one end of the locking pin 4 is slidably arranged in the L-shaped groove 11, the other end of the locking pin 4 is fixed to a fixed point I through a return spring 5, and the elastic direction of the return spring 5 is parallel to the upper vertical part of the L-shaped groove 11; the electromagnet 6 is provided at a fixed point III in the direction parallel to the elastic force direction of the return spring 5. The return spring is in the form of a helical spring which bears axial tension or pressure. The locking pin 4 is made of iron. The electromagnet 6 is arranged at a fixed point III in the direction parallel to the elastic force direction of the return spring 5, and the electromagnet 6 and the return spring 5 are respectively positioned at two sides of the locking pin 4. The side wall of the piston for arranging the L-shaped groove 11 is a flat surface, and the groove wall of the L-shaped groove 11 is perpendicular to the flat surface. The other end of the piston 1 is fixed to a fixed point II through a piston spring 3, and the elastic force direction of the piston spring 3 is the same as the running direction of the piston 1.
The specific working process of the electro-hydraulic parking locking mechanism is as follows: when the vehicle needs to be parked, the electromagnet 6 is electrified, and the locking pin 4 is pushed to slide through electromagnetic force. When the locking pin 4 slides to the inflection point of the L-shaped groove 11, the piston 1 is enabled to translate under the action of the thrust of the piston spring 3, the piston 1 moves at the parking position, the locking pin 4 is limited at the lower flat part, and parking is completed. When needing the parking unblock, hydraulic pressure promotes piston 1 translation and resets, is pushed by reset spring 5 when locking round pin 4 reachs "L" type groove 11 flex point to N and keeps off the locking position and in the portion of rising promptly, accomplishes the parking unblock.
In addition, although not shown in the drawings, those skilled in the art can understand other possible installation positions of the electromagnet 6 and the operation mode thereof through the description of the "fixing point III where the electromagnet 6 is installed in the elastic force direction of the return spring 5 or the direction parallel to the elastic force direction, or the end of the vertical part on the" L "shaped groove 11, or the inflection point position between the vertical part and the lower flat part on the" L "shaped groove 11".
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments disclosed, and that various changes and modifications may be made, which are within the scope of the appended claims.
Claims (6)
1. The electro-hydraulic parking locking mechanism is characterized by comprising a locking pin, an electromagnet for adsorbing or repelling the locking pin and a piston, wherein one end of the piston is connected to the parking mechanism through a push rod pin; the side wall of the piston is provided with an L-shaped groove, the lower flat part of the L-shaped groove is in the same direction with the running direction of the piston, and the upper vertical part of the L-shaped groove is vertical to the running direction of the piston; one end of the locking pin is slidably arranged in the L-shaped groove, the other end of the locking pin is fixed to a fixed point I through a return spring, and the elastic direction of the return spring is parallel to the upper vertical part of the L-shaped groove; the electromagnet is arranged at a fixed point III in the elastic direction of the reset spring or in the parallel direction of the reset spring, or at the tail end of the upper vertical part of the L-shaped groove or at the inflection point between the upper vertical part and the lower flat part of the L-shaped groove.
2. The electro-hydraulic parking lock mechanism of claim 1, wherein the return spring is in the form of a leaf spring having one end securing the other end of the locking pin and the other end secured to a fixed point I.
3. The electro-hydraulic parking lock mechanism according to claim 2, wherein a pit is formed in the other end of the piston and communicated with the bottom of the L-shaped groove; one end of the plate spring is arranged in the cavity of the concave pit.
4. The electro-hydraulic parking lock mechanism of claim 1, wherein the return spring is in the form of a coil spring that is subjected to axial tension or compression.
5. The electro-hydraulic parking lock mechanism of claim 1, wherein the other end of the piston is fixed to a fixed point II through a piston spring, and the elastic force direction of the piston spring is the same as the piston running direction.
6. The electro-hydraulic parking lock mechanism of claim 1, wherein the side wall of the piston for providing the "L" shaped groove is a flat surface, and the groove wall of the "L" shaped groove is perpendicular to the flat surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920961627.1U CN210461661U (en) | 2019-06-25 | 2019-06-25 | Electro-hydraulic parking locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920961627.1U CN210461661U (en) | 2019-06-25 | 2019-06-25 | Electro-hydraulic parking locking mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN210461661U true CN210461661U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920961627.1U Active CN210461661U (en) | 2019-06-25 | 2019-06-25 | Electro-hydraulic parking locking mechanism |
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| CN (1) | CN210461661U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555406A (en) * | 2020-12-08 | 2021-03-26 | 磐吉奥(湖南)工业有限公司 | Parking braking mechanism |
-
2019
- 2019-06-25 CN CN201920961627.1U patent/CN210461661U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112555406A (en) * | 2020-12-08 | 2021-03-26 | 磐吉奥(湖南)工业有限公司 | Parking braking mechanism |
| CN112555406B (en) * | 2020-12-08 | 2022-04-08 | 磐吉奥(湖南)工业有限公司 | Parking braking mechanism |
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