CN111237452A

CN111237452A - Parking control device for gearbox

Info

Publication number: CN111237452A
Application number: CN202010140029.5A
Authority: CN
Inventors: 吴敏; 范礼; 丁万龙; 邵璠; 汤忠; 孙东升
Original assignee: Japhl Powertrain Systems Co ltd
Current assignee: Japhl Powertrain Systems Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-06-05

Abstract

The invention provides a parking control device for a gearbox, which is applied to the technical field of vehicle parking, wherein a locking electromagnet (5) and a sliding sleeve (6) are arranged in a piston (4) in an actuating mechanism shell (3) of an actuating mechanism (1) of the parking control device for the gearbox, the piston (4) and the actuating mechanism shell (3) form a hydraulic cavity H (29), a fixed magnet (13) in an electromagnetic valve shell (21) of a hydraulic electromagnetic valve (2) is externally wrapped by an electromagnetic coil (12), a movable magnet (14) is connected with a valve core (16), the valve core (16) is positioned in a valve body (17), an oil through hole A (30) and an oil through hole T (33) are arranged on the electromagnetic valve shell (21), and the oil through hole A (30) is communicated with the hydraulic cavity H (29). Compact structure, can realize arranging in narrow and small space, practice thrift and arrange the space.

Description

Parking control device for gearbox

Technical Field

The invention belongs to the technical field of vehicle parking, and particularly relates to a parking control device for a gearbox.

Background

The parking device for vehicles in the current market mainly comprises a mechanical type, a motor type and a hydraulic type. However, the existing parking device technology has the defects of low position precision, large number of parts and the like, or has the defects of scattered parts, large occupied space, low integrated design degree, complex installation and the like. Meanwhile, the parking device in the prior art resists the pawl through the torsion spring to prevent the pawl from falling into the tooth grooves of the parking gear when the vehicle runs, but the torsion provided by the torsion spring is limited, so that the pawl cannot be prevented from falling into the tooth grooves under the condition of violent road conditions, the vehicle is locked instantly, and danger is caused. Therefore, the parking device in the prior art cannot effectively meet the requirement of parking the vehicle.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the parking control device for the gearbox is compact in overall structure, capable of achieving arrangement in a narrow space, capable of improving application range, controlling safety and saving vehicle space.

To solve the technical problems, the invention adopts the technical scheme that:

the invention relates to a parking control device for a gearbox, which comprises an actuating mechanism and a hydraulic electromagnetic valve, wherein a piston is arranged in an actuating mechanism shell of the actuating mechanism, a locking electromagnet and a sliding sleeve are arranged in the piston, a hydraulic cavity H is formed by the piston and the actuating mechanism shell, a fixed magnet and a movable magnet are arranged in an electromagnetic valve shell of the hydraulic electromagnetic valve, an electromagnetic coil is wrapped outside the fixed magnet, the movable magnet is connected with a valve core, the valve core is positioned in the valve body, an oil through hole A and an oil through hole T are arranged on the electromagnetic valve shell, the oil through hole A is communicated with the hydraulic cavity H, and the valve core is aligned.

The hydraulic electromagnetic valve is fixedly connected to the side face of the actuating mechanism, and the moving magnet is provided with a top pin which is connected with the valve core.

A piston of the actuating mechanism is internally provided with a return spring, one end of the return spring abuts against the piston locking electromagnet, the other end of the return spring abuts against the sliding sleeve, a connecting rod on the sliding sleeve is arranged perpendicular to the sliding sleeve, the connecting rod penetrates through a limiting long groove I on a shell of the actuating mechanism, and the piston is also provided with a limiting long groove II corresponding to the position and the length of the limiting long groove I.

The inner wall of the piston of the actuating mechanism is provided with a limiting bulge M, the locking electromagnet is limited in the inner part of the shell of the actuating mechanism, and one side of the locking electromagnet, which is close to the limiting bulge M, is also provided with a limiting output part.

The sliding sleeve and the connecting rod are positioned through a balance pin, an operating rod and an induction magnet are installed on one side of the connecting rod, a position sensor is installed on the shell of the actuating mechanism, and the induction magnet is close to the position of the position sensor.

The parking control device for the gearbox is characterized in that one end of the operating rod is installed on the connecting rod, the other end of the operating rod is inserted into the movable actuating guide block, the operating rod is further sleeved with an actuating spring, one end of the actuating spring acts on the actuating guide block, the other end of the actuating spring abuts against the limiting boss on the operating rod, the actuating guide block is set to be a structure capable of compressing the actuating spring and sliding relative to the operating rod, and when the parking control device for the gearbox controls the operating rod to act, the actuating guide block is set to be a structure capable of driving the parking mechanism body of the vehicle to be switched between.

When the locking electromagnet is not electrified and the hydraulic electromagnetic valve is not electrified, the limiting output part of the locking electromagnet is arranged to be matched with the limiting bulge M on the piston under the pushing action of the spring so as to control the structure that the piston cannot move; under the action of a return spring, the connecting rod is arranged to be positioned at the lower end positions of a limiting long groove I of the shell and a limiting long groove II of the piston, and at the moment, the parking control device for the gearbox is arranged to be positioned at a P position; when the locking electromagnet is electrified and the hydraulic electromagnetic valve is electrified, the hydraulic electromagnetic valve is electrified to enable the pushing piston of hydraulic oil entering the hydraulic cavity H to move upwards, the piston is arranged to be capable of driving the connecting rod to move upwards, the connecting rod drives the sliding sleeve to move upwards at the same time, the return spring is compressed, the connecting rod is arranged to be capable of moving to the upper end position of the limiting long groove I of the shell and the lower end position of the limiting long groove II of the piston, and at the moment, the parking control device for the gearbox is arranged to be in an NP position structure.

When the hydraulic electromagnetic valve is powered on, the moving magnet and the fixed magnet repel each other, the moving magnet is set to be capable of driving the ejector pin to move axially, so that the ejector pin pushes the valve core and the valve body to separate, when the ejector pin pushes the valve core and the valve body to separate, the oil inlet P is set to be capable of being communicated with the oil inlet A, when the ejector pin pushes the valve core and the valve body to separate, the ejector pin is set to be capable of being pressed on the valve body and stopped at the position of closing the oil inlet T, the ejector pin is pressed on the valve body and stopped at the position of closing the oil inlet T, and hydraulic oil is set to be capable of flowing from the oil inlet P to the oil inlet A and enters the structure in the hydraulic cavity H.

When hydraulic pressure solenoid valve not circular telegram, moving magnet and fixed magnet set up to be in the structure of looks suction state, when moving magnet and fixed magnet were inhaled mutually, the case sets up to the structure that can stop to lead to oil port P position, when moving magnet and fixed magnet were inhaled mutually, knock pin and valve body separation lead to oil port A and lead to oil port T intercommunication, hydraulic oil in the hydraulic pressure chamber H sets up to the structure that can follow oil port A and flow to oil port T.

The manual unlocking deflector rod capable of manually unlocking the parking control device for the gearbox is arranged on the other side of the connecting rod, the manual unlocking deflector rod is mounted on the shell of the gearbox and can rotate around a shaft, when manual force is applied to the manual unlocking deflector rod, the connecting rod is lifted through lever force, the connecting rod leaves the lower end positions of the limiting long groove I on the shell and the limiting long groove II on the piston and moves upwards, the piston and the shell are kept still, and the unlocking purpose is achieved. After the manual unlocking shifting rod is unlocked, the parking control device is set to be in an NP position structure.

By adopting the technical scheme of the invention, the following beneficial effects can be obtained:

the parking control device for the gearbox adopts a design idea completely different from the prior art to provide structural improvement. The actuating mechanism and the hydraulic electromagnetic valve are manufactured independently and fixedly connected with each other in use, and the parking control device for the gearbox is formed by fixedly connecting the actuating mechanism and the hydraulic electromagnetic valve, has a simple structure and a small size, and can be conveniently installed on the gearbox. When parking control is carried out, the hydraulic electromagnetic valve is matched with the actuating mechanism, the hydraulic electromagnetic valve controls the on-off of an oil way, the movement of a piston in the actuating mechanism is realized, and therefore the extension and the contraction of an operating rod connected with a connecting rod on the sliding sleeve are controlled (the extension and the contraction both move axially relative to the actuating mechanism). When the operating rod extends out, the operating rod drives the parking device body to be in a P state, and at the moment, the vehicle is in a parking state. When the operating rod is contracted, the operating rod drives the parking device body to be in an NP state, and at the moment, the vehicle is in a parking releasing state. When the parking state needs to be relieved, the locking electromagnet of the actuating mechanism and the coil of the hydraulic electromagnetic valve need to be respectively electrified to realize the communication of an oil way, the hydraulic cavity H enters hydraulic oil to push the piston to move, and at the moment, the connecting rod can move relatively, so that the movement and the contraction of the operating rod are realized. Therefore, the whole parking control process is simple, the control is safe and reliable, and the parking control device for the gearbox is integrated with an actuating mechanism and a hydraulic electromagnetic valve, so that the whole parking control device is small in size and small in occupied space for loading. The parking control device for the gearbox can conveniently and reliably realize parking and parking control releasing of the vehicle, avoids the occurrence of the instant locking danger of the vehicle, has a compact structure, can realize arrangement in a narrow space, improves the application range, controls the safety and saves the vehicle space.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic structural diagram of a parking control device for a transmission according to the present invention;

fig. 2 is a schematic view of the overall structure of a parking control device for a transmission according to the present invention;

FIG. 3 is a schematic diagram of an internal cross-sectional view of an actuator of the park control apparatus for a transmission according to the present invention;

FIG. 4 is a schematic diagram showing an internal cross-sectional structure of a hydraulic solenoid valve of a parking control apparatus for a transmission according to the present invention;

in the drawings, the reference numbers are respectively: 100. a main oil path; 200. a connector assembly; 1. an actuator; 2. a hydraulic solenoid valve; 3. an actuator housing; 4. a piston; 5. locking the electromagnet; 6. a sliding sleeve; 7. a return spring; 8. a connecting rod; 9. an operating lever; 10. an induction magnet; 11. a hydraulic electromagnet housing; 12. a coil; 13. fixing a magnet; 14. a moving magnet; 15. a knock pin; 16. a spring; 17. a valve body; 18. a magnetism isolating ring; 19. a guide ring; 20. a seal ring; 21. a solenoid valve housing; 22. a balance pin; 23. a position sensor; 24. actuating the guide block; 25. an actuating spring; 26. a manual unlocking deflector rod; 27. a limiting output member; 28. a spring; 29. a hydraulic chamber H; 30. an oil through opening A; 31. an oil inlet P; 32. a limiting long groove; 33. an oil through port T; 34. a limiting bulge M; 35. a limiting boss; 36. a limiting long groove I; 37. and a limiting long groove II.

Detailed Description

The following detailed description of the embodiments of the present invention, such as the shapes and structures of the components, the mutual positions and connection relations among the components, the functions and operation principles of the components, will be made by referring to the accompanying drawings and the description of the embodiments:

as shown in fig. 1-4, the invention is a parking control device for a transmission, comprising an actuator 1 and a hydraulic solenoid valve 2, wherein a piston 4 is arranged in an actuator housing 3 of the actuator 1, a locking electromagnet 5 and a sliding sleeve 6 are arranged in the piston 4, the piston 4 and the actuator housing 3 form a hydraulic chamber H29, a fixed magnet 13 and a moving magnet 14 are arranged in an electromagnetic valve housing 21 of the hydraulic solenoid valve 2, the fixed magnet 13 is wrapped with an electromagnetic coil 12, the moving magnet 14 is connected with a valve core 16, the valve core 16 is positioned in a valve body 17, an oil through port a30 and an oil through port T33 are arranged on the electromagnetic valve housing 21, the oil through port a30 is communicated with the hydraulic chamber H29, and the valve core 16 is aligned with an oil inlet P31. Above-mentioned structure adopts the design that is totally different with prior art to propose the institutional advancement. The actuating mechanism 1 and the hydraulic electromagnetic valve 2 are manufactured independently and fixedly connected with each other in use, and the parking control device for the gearbox, which is formed by fixedly connecting the actuating mechanism 1 and the hydraulic electromagnetic valve 2, is simple in structure and small in size, and can be conveniently installed on the gearbox. When parking control is carried out, the hydraulic electromagnetic valve 2 is matched with the actuating mechanism 1, the hydraulic electromagnetic valve 2 controls the on-off of an oil path, the movement of the piston 4 in the actuating mechanism 1 is realized, and the extension and the contraction of an operating rod 9 connected with a connecting rod 8 on the sliding sleeve 6 are controlled (the extension and the contraction both move axially relative to the actuating mechanism). When the operating rod 9 extends out, the operating rod 9 drives the parking device body to be in a P state, and at the moment, the vehicle is in a parking state. When the operating rod 9 is contracted, the operating rod 9 drives the parking device body to be in the NP state, and at the moment, the vehicle is in the parking releasing state. When the parking state needs to be released, the locking electromagnet 5 of the actuating mechanism 1 and the coil 12 of the hydraulic electromagnetic valve 2 need to be respectively electrified to realize the communication of an oil path, the hydraulic cavity H29 enters hydraulic oil to push the piston 4 to move, and at the moment, the connecting rods can move relatively to realize the movement and the contraction of the operating rod. Therefore, the whole parking control process is simple, the control is safe and reliable, and the integrated actuating mechanism and the hydraulic electromagnetic valve of the parking control device for the gearbox have small volume and small occupied space. The parking control device for the gearbox can conveniently and reliably realize parking and parking control releasing of the vehicle, avoids the occurrence of the instant locking danger of the vehicle, has a compact structure, can realize arrangement in a narrow space, improves the application range, controls the safety and saves the vehicle space.

The hydraulic electromagnetic valve 2 is fixedly connected to the side position of the actuating mechanism 1, the moving magnet 14 is provided with a top pin 15, and the top pin 15 is connected with a valve core 16. In the structure, the hydraulic electromagnetic valve 2 is a two-position three-way electromagnetic valve, and the hydraulic electromagnetic valve 2 is integrally connected to the actuating mechanism shell 3. And the hydraulic chamber H29 is communicated with the oil through port A, so that the on-off control of hydraulic oil is realized conveniently. The solenoid valve shell 11 wraps the coil 12 and the fixed magnet 13, and the moving magnet 14 is matched and connected with the ejector pin 15, and moves synchronously. Force transmission is realized between the moving magnet 14 and the valve core 16 through the ejector pin 15, the ejector pin 15 moves to push the valve core 16 to move, and the moving magnet 14 is a permanent magnet. The on-off function of the hydraulic electromagnetic valve 2 is realized by switching on and off the electromagnetic coil 12. The hydraulic oil on-off of the hydraulic electromagnetic valve can influence the actuating mechanism to control the operating rod. The valve core 16 and the valve body 17 are matched to control the communication between the oil inlet P31 and the oil through port A30, and the oil through port A30 on the hydraulic electromagnetic valve 2 is directly communicated with the hydraulic cavity H29 (piston cavity H29). The knock pin 15 and the valve body 17 cooperate to control the communication between the oil passage port a30 and the oil passage port T33.

A return spring 7 is arranged in a piston 4 of the actuating mechanism 1, one end of the return spring 7 abuts against the piston locking electromagnet 5, the other end of the return spring 7 abuts against a sliding sleeve 6, a connecting rod 8 on the sliding sleeve 6 is arranged perpendicular to the sliding sleeve 6, the connecting rod 8 penetrates through a limiting long groove I36 on the actuating mechanism shell 3, and a limiting long groove II 37 corresponding to the position and the length of the limiting long groove I36 is also arranged on the piston 4. With the above structure, the sliding sleeve 6 can move axially relative to the piston 4. The sliding sleeve 6 and the connecting rod 8 are restrained and positioned through the balance pin 22, the connecting rod 8 is located in the limiting long groove I36 and the limiting long groove II 37, the length sizes of the two limiting long grooves are both larger than the diameter size of the connecting rod 8, and therefore the connecting rod can move up and down in the limiting long groove. In this way, when the control device is in different states, the connecting rod is located at different positions, and the operating rod is located at different positions, so that the control device acts on the parking device body connected with the operating rod, and the parking device is switched between parking and non-parking.

The inner wall of the piston 4 of the actuating mechanism 1 is provided with a limit bulge M34, the locking electromagnet 5 is limited in the actuating mechanism shell 3, and one side of the locking electromagnet 5 close to the limit bulge M34 is also provided with a limit output part 27. In the above structure, the limit output member 27 is a steel ball. The piston 4 is of an annular structure, the middle of the piston is of a hollow structure, and a limiting bulge M is arranged in the hollow structure. And a locking electromagnet 5 matched with the limiting bulge M is arranged in the piston 4. The locking solenoid housing 21 and the actuator housing 3 are fixed to each other. A return spring 7 and a sliding sleeve 6 are also arranged in the piston 4, and the sliding sleeve 6 can axially slide in the piston 4. A reset spring 7 is matched between the sliding sleeve 6 and the locking electromagnet 5 (piston locking electromagnet), one end of the reset spring 7 is supported on the fixed piston locking electromagnet 5, the other end of the reset spring is supported on the sliding sleeve 6, and the sliding sleeve 6 and the piston locking electromagnet 5 are connected through the reset spring 7 to transfer force. The piston locking electromagnet 5 can lock the piston 4 to move, thereby ensuring that the device is kept in a P gear state or an NP gear state.

The sliding sleeve 6 and the connecting rod 8 are positioned through a balance pin 22, an operating rod 9 and an induction magnet 10 are installed on one side of the connecting rod 8, a position sensor 23 is installed on the actuating mechanism shell 3, and the induction magnet 10 is close to the position sensor 23. In the structure, the operating rod 9 and the magnet 10 are arranged at one end of the connecting rod 8, the connecting rod, the operating rod and the magnet act synchronously, the operating rod 9 can rotate in the radial direction of the connecting rod 8, the magnet 10 is matched with the position sensor 23 on the executing mechanism shell, the position sensor 23 is arranged on the executing mechanism shell 3, and the position sensor 23 can feed back position signals of the operating rod 9 at any time. The arrangement of the long limiting groove can limit the movement stroke of the connecting rod.

According to the parking control device for the gearbox, one end of an operating rod 9 is installed on a connecting rod 8, the other end of the operating rod 9 is inserted into a movable actuating guide block 24, an actuating spring 25 is further sleeved on the operating rod 9, one end of the actuating spring 25 acts on the actuating guide block 24, the other end of the actuating spring 25 abuts against a limiting boss 35 on the operating rod 9, the actuating guide block 24 is arranged to be capable of compressing the actuating spring 25 to slide relative to the operating rod 9, and when the parking control device for the gearbox controls the operating rod 9 to act, the actuating guide block 24 is arranged to be capable of driving a vehicle parking mechanism body to be switched between a parking state and a non-parking state.

In the structure of the invention, the spring 28 belongs to an inner part of the locking electromagnet 5. When the locking electromagnet 5 is not electrified and the hydraulic electromagnetic valve 2 is not electrified, the limit output member 27 of the locking electromagnet 5 is configured to be capable of cooperating with the limit protrusion M34 on the piston 4 under the pushing action of the spring 28, so as to control the piston 4 to be immovable; under the action of the return spring 7, the connecting rod 8 is arranged to be positioned at the lower end positions of a limiting long groove I36 of the shell 3 and a limiting long groove II 37 of the piston 4, and at the moment, the parking control device for the gearbox is arranged to be positioned at a P position; when the locking electromagnet 5 is powered on and the hydraulic electromagnetic valve 2 is powered on, the hydraulic electromagnetic valve 2 is powered on to enable the pushing piston 4 of the hydraulic oil entering the hydraulic cavity H29 to move upwards, the piston 4 is arranged to be capable of driving the connecting rod to move upwards, the connecting rod 8 drives the sliding sleeve 6 to move upwards at the same time, the return spring 7 is compressed, and the connecting rod 8 is arranged to be capable of moving to the upper end position of the limiting long groove I36 of the shell 3 and the lower end position of the limiting long groove II 37 of the piston 4. The parking control for the gearbox is now arranged in the NP position. After reaching the NP position, the locking electromagnet 5 is de-energized and at the same time the movement of the piston is also locked.

In the structure of the present invention, the lock electromagnet 5 functions to lock the piston movement. Whether in the P bit or NP bit, lock-out is required. When the locking electromagnet 5 is not energized, the locking piston moves, and the parking device may be in the P position or the NP position. When the locking electromagnet 5 is electrified, the piston is in a free state and can move along the axial direction, and the moving direction is controlled by a hydraulic electromagnetic valve. If the hydraulic electromagnetic valve 2 is electrified, the oil pressure pushes the piston to move upwards to reach NP position; if the hydraulic electromagnetic valve is not electrified, the return spring pushes the piston to move downwards to reach the NP position. No matter in P position or NP position, the locking electromagnet locks the piston to move, and parking releasing holding of the vehicle are achieved.

When hydraulic pressure solenoid valve 2 circular telegram, moving magnet 14 and fixed magnet 13 repel each other, moving magnet 14 sets up to driving the structure of knock pin 15 axial motion, thereby make knock pin 15 promote the structure of case 16 and valve body 17 separation, when knock pin 15 promotes case 16 and valve body 17 separation, oil inlet P31 sets up to be able to be in the structure of connected state with logical oil mouth A30, when knock pin 15 promotes case 16 and valve body 17 separation, knock pin 15 sets up to press on valve body 17, the structure of closing logical oil mouth T33 position, knock pin 15 press on valve body 17 when staying and close logical oil mouth T33 position, hydraulic oil sets up to be able to follow oil inlet P31 flow direction and leads to oil mouth A30 to enter the structure in the hydraulic pressure chamber H29. When hydraulic pressure solenoid valve 2 not switched on, moving magnet 14 and fixed magnet 13 set up to be in the structure of looks suction state, moving magnet 14 and fixed magnet 13 are when inhaling mutually, case 16 sets up to the structure that can stop closed oil through port P31 position, moving magnet 14 and fixed magnet 13 are when inhaling mutually, knock pin 15 and valve body 17 separation, oil through port A30 and oil through port T33 intercommunication, hydraulic oil in the hydraulic pressure chamber H29 sets up to the structure that can follow oil through port A30 flow to oil through port T33. With the above structure, when the oil inlet a30 is communicated with the oil inlet T33, the hydraulic oil in the hydraulic chamber H29 flows out, and the hydraulic chamber H29 returns to the initial state.

The manual unlocking deflector rod 26 capable of manually unlocking the parking control device for the gearbox is arranged on the other side of the connecting rod 8, the manual unlocking deflector rod 26 is installed on the shell of the gearbox and can rotate around a shaft, when the manual unlocking deflector rod 26 is used for unlocking, the connecting rod 8 is lifted through lever force, the connecting rod 8 leaves the lower end positions of the limiting long groove I36 of the actuating mechanism shell 3 (shell 3) and the limiting groove II 37 of the piston 4 and moves upwards, the piston 4 and the shell 3 are kept still, and the unlocking purpose is achieved. After unlocking by the manual unlocking lever 26, the parking control for the gearbox is set in the NP position. In the structure, the manual unlocking deflector rod 26 is fixed on the shell of the gearbox and is not in direct contact with the connecting rod 8, and the deflector rod is twisted by external force only when an accident happens or manual unlocking is needed, so that the connecting rod 8 is pushed to move, and the change from the P state to the NP state is realized. Meanwhile, the deflector rod is provided with a return spring, and when the force of the deflector rod is relieved, the return spring in the mechanism compresses the sliding sleeve to reach the P state again under the action of the return spring.

A magnetism isolating ring 18 is arranged between the moving magnet 14 and the fixed magnet 13. A flux-trap ring 18 is mounted on the moving magnet to ensure that the flux-trap ring moves with the moving magnet 14. The arrangement of the magnetism isolating ring 18 effectively avoids the problem that the movable magnet 14 and the fixed magnet 13 are directly attracted together and cannot be separated.

In the parking control device, two mounting grooves are formed in the outer periphery of the piston 4 and the inner periphery of the actuating mechanism shell 3 and used for assembling the guide ring 19 and the sealing ring 20, and the sealing ring 20 is assembled in one mounting groove close to the hydraulic cavity to prevent hydraulic oil from leaking.

The parking control device for the gearbox is characterized in that one end of the operating rod 9 is installed on the connecting rod 8, the other end of the operating rod 9 is inserted into the movable actuating guide block 24, the operating rod 9 is further sleeved with an actuating spring 25, one end of the actuating spring 25 acts on the actuating guide block 24, the other end of the actuating spring 25 abuts against the limiting boss 35 on the operating rod 9, the actuating guide block 24 is set to be a structure capable of compressing the actuating spring 25 and sliding relative to the operating rod 9, and when the parking control device for the gearbox controls the operating rod 9 to act, the actuating guide block 24 is set to be a structure capable of driving a vehicle parking mechanism body to be switched between a parking state. The above-described structure is intended to control the movement of the operating lever so as to act on the parking mechanism body (parking device body) to switch the vehicle between the parking state and the non-parking state.

In the structure of the invention, the connecting rod 8 is inserted in the hole of the sliding sleeve 6, and the sliding sleeve 6 and the connecting rod 8 act together. When the P state is switched to the NP state, the piston drives the connecting rod and the sliding sleeve to move upwards to reach the upper end position of the limiting long groove I of the shell 3, and the spring 28 is compressed; when the NP state is switched to the P state, the return spring pushes the sliding sleeve 6 and drives the connecting rod 8 and the piston to move downwards to reach the position of the lower end of the limiting long groove I of the shell 3 and stop. The return spring always pushes the connecting rod to lean against the lower end position of the limiting long groove II of the piston, and the return spring is special only under the condition of manual unlocking. The manual unlocking shifting lever can realize the movement of the position of the connecting rod, so that the manual unlocking is realized.

The present invention has been described in connection with the accompanying drawings, and it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, changes and equivalents of the embodiments of the invention, and its application to other applications without departing from the spirit and scope of the invention.

Claims

1. A parking control apparatus for a transmission, characterized in that: the hydraulic electromagnetic valve comprises an executing mechanism (1) and a hydraulic electromagnetic valve (2), a piston (4) is arranged in an executing mechanism shell (3) of the executing mechanism (1), a locking electromagnet (5) and a sliding sleeve (6) are arranged in the piston (4), the piston (4) and the executing mechanism shell (3) form a hydraulic cavity H (29), a fixed magnet (13) and a movable magnet (14) are arranged in an electromagnetic valve shell (21) of the hydraulic electromagnetic valve (2), the fixed magnet (13) is externally wrapped by an electromagnetic coil (12), the movable magnet (14) is connected with a valve core (16), the valve core (16) is located in a valve body (17), an oil through opening A (30) and an oil through opening T (33) are arranged on the electromagnetic valve shell (21), the oil through opening A (30) is communicated with the hydraulic cavity H (29), and the valve core (16) is.

2. The parking control apparatus for a transmission according to claim 1, characterized in that: the hydraulic electromagnetic valve (2) is fixedly connected to the side face of the actuating mechanism (1), a top pin (15) is arranged on the movable magnet (14), and the top pin (15) is connected with a valve core (16).

3. The parking control apparatus for a transmission according to claim 1 or 2, characterized in that: a piston (4) of the actuating mechanism (1) is internally provided with a return spring (7), one end of the return spring (7) abuts against the piston locking electromagnet (5), the other end of the return spring (7) abuts against the sliding sleeve (6), a connecting rod (8) on the sliding sleeve (6) is arranged perpendicular to the sliding sleeve (6), the connecting rod (8) penetrates through a limiting long groove I (36) on the actuating mechanism shell (3), and the piston (4) is also provided with a limiting long groove II (37) corresponding to the position and the length of the limiting long groove I (36).

4. The parking control apparatus for a transmission according to claim 1 or 2, characterized in that: a limiting bulge M (34) is arranged on the inner wall of a piston (4) of the executing mechanism (1), the locking electromagnet (5) is set to be limited in the structure inside the executing mechanism shell (3), and a limiting output part (27) is further arranged on one side, close to the limiting bulge M (34), of the locking electromagnet (5).

5. The parking control apparatus for a transmission according to claim 3, characterized in that: the sliding sleeve (6) and the connecting rod (8) are positioned through a balance pin (22), an operating rod (9) and an induction magnet (10) are installed on one side of the connecting rod (8), a position sensor (23) is installed on the executing mechanism shell (3), and the induction magnet (10) is close to the position of the position sensor (23).

6. The parking control apparatus for a transmission according to claim 1 or 2, characterized in that: operating rod (9) one end install on connecting rod (8), the mobilizable guide block (24) that actuates is inserted to operating rod (9) other end, still the suit on operating rod (9) actuates spring (25), actuate spring (25) one end and act on actuating guide block (24), actuate the spring (25) other end and lean on spacing boss (35) on operating rod (9), actuate guide block (24) and set up to compress and actuate spring (25) for gliding structure of operating rod (9), when parking controlling means control operating rod (9) for the gearbox moves, actuate guide block (24) and set up to the structure that can drive vehicle parking mechanism body and switch between parking and non-parking state.

7. The parking control apparatus for a transmission according to claim 3, characterized in that: when the locking electromagnet (5) is not electrified and the hydraulic electromagnetic valve (2) is also not electrified, the limiting output part (27) of the locking electromagnet (5) is arranged to be matched with the limiting bulge M (34) on the piston (4) under the pushing action of the spring (28), so that the structure that the piston (4) cannot move is controlled; under the action of a return spring (7), a connecting rod (8) is arranged to be positioned at the lower end positions of a limiting long groove I (36) of the shell (3) and a limiting long groove II (37) of the piston (4), and at the moment, a parking control device for the gearbox is arranged to be positioned at a P position; when the locking electromagnet (5) is electrified and the hydraulic electromagnetic valve (2) is electrified, the hydraulic electromagnetic valve (2) is electrified to enable the pushing piston (4) of hydraulic oil entering the hydraulic cavity H (29) to move upwards, the piston (4) is set to be capable of driving the connecting rod (8) to move upwards, the connecting rod (8) drives the sliding sleeve (6) to move upwards at the same time, the reset spring (7) is compressed, the connecting rod (8) is set to be capable of moving to the upper end position of the limiting long groove I (36) of the shell (3) and the lower end position of the limiting long groove II (37) of the piston (4), and the parking control device for the gearbox is set to be in an NP position structure at the moment.

8. The parking control apparatus for a transmission according to claim 7, characterized in that: when the hydraulic electromagnetic valve (2) is electrified, the moving magnet (14) and the fixed magnet (13) repel each other, the moving magnet (14) is arranged to drive the ejector pin (15) to axially move, thereby leading the ejector pin (15) to push the valve core (16) and the valve body (17) to separate, when the ejector pin (15) pushes the valve core (16) and the valve body (17) to separate, the oil inlet P (31) is set to be in a structure which can be communicated with the oil through opening A (30), when the ejector pin (15) pushes the valve core (16) and the valve body (17) to separate, the knock pin (15) is configured to be pressed against the valve body (17) and stay at a position closing the oil passage port T (33), when the ejector pin (15) is pressed on the valve body (17) and stays at the position of closing the oil through hole T (33), hydraulic oil is provided in a structure capable of flowing from the oil inlet P (31) to the oil passage a (30) and entering the hydraulic chamber H (29).

9. The parking control apparatus for a transmission according to claim 1 or 2, characterized in that: when hydraulic pressure solenoid valve (2) do not circular telegram, move magnet (14) and fixed magnet (13) and set up to be in the structure of looks suction state, move magnet (14) and fixed magnet (13) when inhaling mutually, case (16) set up to stop the structure of closing logical hydraulic fluid port P (31) position, move magnet (14) and fixed magnet (13) when inhaling mutually, knock pin (15) and valve body (17) separation, logical oil port A (30) and logical oil port T (33) intercommunication, hydraulic oil in hydraulic pressure chamber H (29) sets up to the structure that can follow logical oil port A (30) flow direction logical hydraulic fluid port T (33).

10. The parking control apparatus for a transmission according to claim 5, characterized in that: and a manual unlocking deflector rod (26) capable of manually unlocking a parking control device for the gearbox is arranged on the other side of the connecting rod (8).