CN110878834A - Parking mechanism and vehicle provided with same - Google Patents
Parking mechanism and vehicle provided with same Download PDFInfo
- Publication number
- CN110878834A CN110878834A CN201911061015.8A CN201911061015A CN110878834A CN 110878834 A CN110878834 A CN 110878834A CN 201911061015 A CN201911061015 A CN 201911061015A CN 110878834 A CN110878834 A CN 110878834A
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- Prior art keywords
- parking
- roller
- pawl
- parking frame
- frame
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
- F16H63/3433—Details of latch mechanisms, e.g. for keeping pawls out of engagement
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses a parking mechanism and a vehicle provided with the parking mechanism, and relates to the field of vehicle manufacturing, wherein the parking mechanism comprises a parking frame, a parking rod, a parking spring, a ratchet wheel and a pawl, and the parking frame is provided with at least one linear slot; the parking rod part is arranged in the parking frame in a penetrating way, at least one roller is arranged at one end of the parking rod in the parking frame, and the roller is arranged in the linear groove hole in a sliding way; the parking spring is sleeved on the parking rod, one end of the parking spring is connected with the parking frame, and the other end of the parking spring is connected with one end, close to the roller, of the parking rod; the pawl is rotatably arranged in the parking frame and is positioned between the roller and the ratchet wheel, one side of the pawl is provided with a clamping part which is mutually matched and meshed with the ratchet wheel, the other side of the pawl is provided with a contact surface matched with the roller, and the roller slides and is abutted against the contact surface. The parking mechanism provided by the invention has the advantages of longer locking and unlocking stroke, high control precision, compact structure and convenience in arrangement.
Description
Technical Field
The invention relates to the field of vehicle manufacturing, in particular to a parking mechanism and a vehicle with the parking mechanism.
Background
Along with the development of automobile technology, the attention degree of people to vehicle safety increases gradually, and P shelves parking system can lock the vehicle when the vehicle stops or when speed is lower, prevents that the vehicle from taking place to slide when the slope and causing the incident, promotes the security performance, and it is thus obvious that parking mechanism is the safety device that prevents the vehicle from sliding, can make the car reliably and stop at a certain position without time restriction, and the advantage is very obvious. Therefore, vehicles equipped with the P-range parking system are increasing, and the application is becoming wider and more research is being conducted.
Among the prior art, patent CN201721433733.X involves a parking mechanism and vehicle, uses motor cooperation parking system in this patent, when the parking motor is rotatory, drives the action of parking mechanism, realizes the locking and the unblock of parking system, but this type of parking mechanism mostly realizes the parking action through the rotation, and the stroke is less relatively, and control accuracy is not enough, and it is great to occupy the volume in the gearbox, is difficult for arranging.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the parking mechanism which can convert the linear motion of a parking rod into the rotary motion of a pawl, has longer locking and unlocking stroke and high control precision, and is more compact in structure and convenient to arrange.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the utility model provides a parking mechanism, it locates on the gearbox, includes:
the parking frame is used for connecting a shell of the gearbox, and at least one linear slotted hole is formed in the parking frame;
the parking rod is partially arranged in the parking frame in a penetrating mode, one end, located in the parking frame, of the parking rod is provided with at least one roller, the roller is assembled in the linear groove hole in a sliding mode, and the roller does linear reciprocating motion along the linear groove hole;
the parking spring is sleeved on the parking rod and positioned in the parking frame, one end of the parking spring is connected with the parking frame, and the other end of the parking spring is connected with one end, close to the roller, of the parking rod;
the ratchet wheel is used for connecting a main shaft of the gearbox;
the pawl is rotatably arranged in the parking frame and is positioned between the roller and the ratchet wheel, one side of the pawl is provided with a clamping part which is mutually matched and meshed with the ratchet wheel, the other side of the pawl is provided with a contact surface matched with the roller, and the roller slides and is abutted against the contact surface.
On the basis of the technical scheme, the parking mechanism further comprises a return spring which is rotatably arranged in the parking frame, one end of the return spring abuts against the position, close to the clamping part, of the pawl, and the other end of the return spring abuts against the parking frame, so that the pawl has a tendency of being far away from the ratchet wheel.
On the basis of the technical scheme, the parking mechanism further comprises a first pin shaft, the axis of the first pin shaft is parallel to the axis of the ratchet wheel, the first pin shaft sequentially penetrates through one side of the parking frame, the return spring, the pawl and the other side of the parking frame, and one end of the first pin shaft is used for being connected with a shell of the gearbox.
On the basis of the technical scheme, one end of the parking rod, which is positioned in the parking frame, is provided with a roller support, the roller support is provided with second pin shafts, the number of the second pin shafts is the same as that of the rollers, and the rollers are correspondingly sleeved on the second pin shafts.
On the basis of the technical scheme, the parking frame is provided with two linear slotted holes which are arranged side by side, the parking rod is positioned at one end in the parking frame, two idler wheels are installed at one end in the parking frame, and each idler wheel corresponds to one sliding group and is arranged in one linear slotted hole.
On the basis of the technical scheme, the contact surface comprises an unlocking limit position, an unlocking limit surface, a transition surface, a locking limit surface and a locking limit position which are connected in sequence, wherein the unlocking limit surface and the locking limit surface are planes, the transition surface is an arc surface, and the unlocking limit surface and the transition surface form a groove for the rolling of the roller.
On the basis of the technical scheme, the clamping part is provided with an engaging surface engaged with the ratchet wheel, and the engaging surface is formed by combining a plurality of planes and arc surfaces.
On the basis of the technical scheme, the meshing surface is trapezoidal and comprises a first arc surface, a first plane, a second arc surface, a second plane, a third arc surface and a third straight line which are sequentially connected.
On the basis of the technical scheme, a heat treatment plate is further arranged on the inner wall, far away from the parking rod, of the parking frame, and the heat treatment plate is located in a contact area right above the roller.
The invention also provides a vehicle provided with the parking mechanism, which comprises a gearbox, wherein the parking mechanism is arranged on the gearbox, the parking frame is connected with a shell of the gearbox, and the ratchet wheel is connected with a main shaft of the gearbox.
Compared with the prior art, the invention has the advantages that: in the parking mechanism, on one hand, the parking rod drives the idler wheel to do linear motion, the idler wheel supports the pawl to rotate, so that the clamping part of the pawl is meshed with the ratchet wheel, the linear motion of the parking rod can be converted into the rotary motion of the pawl, the linear motion enables the locking and unlocking strokes to be long, and the control precision is high; on the other hand, because the gyro wheel and the pawl of parking mechanism all locate the parking frame in, the structural design of each part is comparatively compact, occupies smallly, is convenient for arrange.
Drawings
FIG. 1 is a side cross-sectional view of a park mechanism in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a parking mechanism according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a pawl in an embodiment of the present invention.
In the figure: 1-parking frame, 11-linear slotted hole, 12-bolt hole, 2-parking rod, 21-roller, 22-roller support, 23-second pin shaft, 3-parking spring, 4-ratchet wheel, 5-pawl, 51-clamping part, 510-meshing surface, 511-first arc surface, 512-first plane, 513-second arc surface, 514-second plane, 515-third arc surface, 516-third straight line, 52-contact surface, 521-unlocking limit position, 522-unlocking limit position, 523-transition surface, 524-locking limit position, 525-locking limit position, 6-return spring, 7-first pin shaft and 8-heat treatment plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
Referring to fig. 1 and 2, an embodiment of the invention provides a parking mechanism, which is arranged on a gearbox and comprises a parking frame 1, a parking rod 2, a parking spring 3, a ratchet 4 and a pawl 5.
The parking frame 1 is used for connecting a shell of a gearbox, and at least one linear slotted hole 11 is formed in the parking frame 1; the parking rod 2 is partially arranged in the parking frame 1 in a penetrating way, one end of the parking rod 2, which is positioned in the parking frame 1, is provided with at least one roller 21, the roller 21 is assembled in the linear slotted hole 11 in a sliding way, and the roller 21 does linear reciprocating motion along the linear slotted hole 11; parking pole 2 is located to the cover of parking spring 3, and is located parking frame 1, and parking frame 1 is connected to 3 one end of parking spring, and the one end that parking pole 2 is close to gyro wheel 21 is connected to the other end.
The ratchet wheel 4 is used for connecting a main shaft of a gearbox; the pawl 5 is rotatably arranged in the parking frame 1, the pawl 5 is positioned between the roller 21 and the ratchet 4, one side of the pawl 5 is provided with a holding part 51 which is mutually matched and meshed with the ratchet 4, the other side of the pawl 5 is provided with a contact surface 52 matched with the roller 21, and the roller 21 slides and is abutted against the contact surface 52.
Furthermore, in the embodiment of the present invention, the parking mechanism further includes a return spring 6 rotatably disposed in the parking frame 1, and one end of the return spring 6 abuts against a position where the pawl 5 is close to the retaining portion 51, and the other end abuts against the parking frame 1, so that the pawl 5 tends to move away from the ratchet 4.
More specifically, in the embodiment of the present invention, the parking mechanism further includes a first pin 7, an axis of the first pin 7 is parallel to an axis of the ratchet 4, the first pin 7 sequentially passes through one side of the parking frame 1, the return spring 6, the pawl 5 and the other side of the parking frame 1, and one end of the first pin 7 is used for connecting a housing of the transmission.
In the embodiment of the present invention, the return spring 6 is a torsion spring, and the pawl 5 tends to rotate around the first pin 7 and disengage the pawl 5 from the ratchet 4 under the action of the return spring 6.
The parking mechanism has a parking state and a non-parking state, when in the parking state, under the action of the parking spring 3, the parking rod 2 pushes the roller 21 to move linearly to the right, and the roller 21 drives the pawl 5 to rotate clockwise so that the clamping part 51 is meshed with the ratchet 4; when the parking device is in the non-parking state, under the action of the parking mechanism actuator, the parking rod 2 drives the roller 21 to move linearly to the left, and the roller 21 drives the pawl 5 to rotate anticlockwise, so that the clamping part 51 is disengaged from the ratchet wheel 4.
In the embodiment of the invention, the working principle of the parking mechanism is as follows: when parking is needed, the parking mechanism actuator does not push the parking rod 2 any more, at the moment, the parking spring 3 is converted from a compressed state into a free state, under the action of the parking spring 3, the parking rod 2 drives the roller 21 to move from left to right, the roller 21 is pushed to move on the contact surface 52, the pawl 5 rotates clockwise, and the clamping part 51 approaches to the ratchet wheel 4 until the clamping part 51 is meshed with the ratchet wheel 4; when parking is no longer needed, the parking mechanism actuator pushes the parking rod 2, the parking rod 2 drives the roller 21 to move from right to left, and the roller 21 is driven to move in the opposite direction on the contact surface 52, so that the pawl 5 rotates anticlockwise, and the clamping part 51 is disengaged from the ratchet 4.
In the parking mechanism of the embodiment of the invention, on one hand, the parking rod 2 drives the roller 21 to do linear motion, the roller 21 supports the pawl 5 to rotate, so that the clamping part 51 of the pawl 5 is meshed with the ratchet wheel 4, the linear motion of the parking rod 2 can be converted into the rotary motion of the pawl 5, the linear motion enables the locking and unlocking strokes to be longer, and the control precision is high; on the other hand, because gyro wheel 21 and pawl 5 of parking mechanism all locate in parking frame 1, the structural design of each part is comparatively compact in this parking mechanism, occupies smallly, is convenient for arrange.
Example 2
Referring to fig. 1 and 2, the present embodiment provides a parking mechanism, and differs from embodiment 1 in that: the parking frame 1 is provided with two linear slotted holes 11 which are arranged side by side, two idler wheels 21 are arranged at one end of the parking rod 2 positioned in the parking frame 1, and each idler wheel 21 is correspondingly arranged in one linear slotted hole 11 in a sliding mode.
In the embodiment of the invention, two linear slots 11 arranged side by side are arranged on the parking frame 1, each linear slot 11 is correspondingly provided with one roller 21, one roller 21 positioned at the lowest part is abutted against the pawl 5, and the two rollers 21 can share the weight of the parking rod 2 and the roller 21 together, so that the friction force is small when the parking rod 2 drives the roller 21 to move in the linear slot 11, the linear motion of the parking rod 2 is more stable, the blocking phenomenon is not easy to occur, and the engagement action and the separation action of the ratchet wheel 5 and the pawl 5 are smoother.
More specifically, in the embodiment of the present invention, one end of the parking lever 2 located in the parking frame 1 is provided with a roller bracket 22, the roller bracket 22 is provided with second pins 23 having the same number as the rollers 21, and the rollers 21 are correspondingly sleeved on the second pins 23.
In the embodiment of the invention, the roller 21 is arranged on the parking rod 2 through the roller bracket 22 and the second pin shaft 23, so that the whole structure is firmer, the occupied space is small, and the structure is more compact.
Example 3
Referring to fig. 3, the present embodiment provides a parking mechanism, and differs from embodiment 1 in that: the contact surface 52 comprises an unlocking limit position 521, an unlocking limit surface 522, a transition surface 523, a locking limit surface 524 and a locking limit position 525 which are connected in sequence, the unlocking limit surface 522 and the locking limit surface 524 are both planes, the transition surface 523 is an arc surface, and the unlocking limit surface 522 and the transition surface 523 form a groove for the rolling of the roller 21.
Further, the holding portion 51 has an engaging surface 510 which engages with the ratchet 4, and the engaging surface 510 is formed by combining a plurality of flat surfaces and a plurality of circular arc surfaces. The engaging surface 510 is trapezoidal, and the engaging surface 510 includes a first arc surface 511, a first plane 512, a second arc surface 513, a second plane 514, a third arc surface 515, and a third straight line 516, which are connected in sequence.
In the structural design of the pawl 5 in the embodiment of the invention, the engaging surface 510 engaged with the ratchet wheel 4 is designed into a combination form of a plane and an arc, so that the situation that parts are damaged due to forced locking of the pawl 5 when a P gear is mistakenly engaged at a higher vehicle speed can be avoided, the parts are effectively prevented from being damaged due to misoperation, in addition, the parking process can be more stable, and the jamming is not easy to occur.
Example 4
The present embodiment provides a parking mechanism, and differs from embodiment 1 in that: the inner wall of the parking frame 1 far away from the parking rod 2 is also provided with a heat treatment plate 8.
In the embodiment of the present invention, the heat treatment plate is disposed on the inner wall of the parking frame 1 and is located in the contact area directly above the roller 21, so that the strength of the parking frame 1 can be improved, and damage during parking can be prevented.
Example 5
The embodiment of the invention also provides a vehicle provided with the parking mechanism, which comprises a gearbox, wherein the parking mechanism is arranged on the gearbox, the parking frame 1 is connected with a shell of the gearbox, and the ratchet wheel 4 is connected with a main shaft of the gearbox.
Furthermore, in the embodiment of the invention, the parking frame 1 is provided with a plurality of bolt holes 12, and the parking frame 1 is connected with the shell of the gearbox through the bolt holes 12, so that the connection mode is simpler and more convenient.
The working process of the embodiment of the invention is as follows: when parking is needed, the parking mechanism actuator does not push the parking rod 2 any more, at the moment, the parking spring 3 is converted from a compression state to a free state, under the action of the parking spring 3, the parking rod 2 drives the roller 21 to move from left to right, the roller 21 is pushed to move on the contact surface 52, the pawl 5 rotates clockwise, the clamping part 51 approaches the ratchet wheel 4 until the clamping part 51 is meshed with the ratchet wheel 4, and the ratchet wheel 4 stops rotating, so that the vehicle stops; when parking is no longer needed, the parking mechanism actuator pushes the parking rod 2, the parking rod 2 drives the roller 21 to move from right to left, the roller 21 is driven to move in the opposite direction on the contact surface 52, the pawl 5 rotates anticlockwise, the clamping part 51 is disengaged from the ratchet 4, the ratchet 4 moves under the driving of the gearbox, and the vehicle moves forwards.
In the embodiment of the invention, on one hand, the linear motion of the parking rod 2 can be converted into the rotary motion of the pawl 5, and the linear motion enables the locking and unlocking strokes to be longer and the control precision to be high; on the other hand, because gyro wheel 21 and pawl 5 of parking mechanism all locate in parking frame 1, the structural design of each part is comparatively compact in this parking mechanism, occupies smallly, is convenient for arrange.
The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. The utility model provides a parking mechanism, its characterized in that, it is located on the gearbox, includes:
the parking frame (1) is used for connecting a shell of the gearbox, and at least one linear slotted hole (11) is formed in the parking frame (1);
the parking rod (2) is partially arranged in the parking frame (1) in a penetrating mode, at least one roller (21) is installed at one end, located in the parking frame (1), of the parking rod (2), the roller (21) is assembled in the linear slotted hole (11) in a sliding mode, and the roller (21) conducts linear reciprocating motion along the linear slotted hole (11);
the parking spring (3) is sleeved on the parking rod (2) and is positioned in the parking frame (1), one end of the parking spring (3) is connected with the parking frame (1), and the other end of the parking spring is connected with one end, close to the roller (21), of the parking rod (2);
a ratchet wheel (4) used for connecting a main shaft of the gearbox;
the pawl (5) is rotatably arranged in the parking frame (1), the pawl (5) is positioned between the roller (21) and the ratchet wheel (4), one side of the pawl (5) is provided with a clamping part (51) which is mutually matched and meshed with the ratchet wheel (4), the other side of the pawl is provided with a contact surface (52) matched with the roller (21), and the roller (21) slides and is abutted against the contact surface (52).
2. The parking mechanism of claim 1, further comprising:
and the return spring (6) is rotatably arranged in the parking frame (1), one end of the return spring (6) abuts against the position, close to the clamping part (51), of the pawl (5), and the other end of the return spring abuts against the parking frame (1), so that the pawl (5) has a tendency of being far away from the ratchet wheel (4).
3. The parking mechanism of claim 2, further comprising:
the axis of the first pin shaft (7) is parallel to that of the ratchet wheel (4), the first pin shaft (7) sequentially penetrates through one side of the parking frame (1), the return spring (6), the pawl (5) and the other side of the parking frame (1), and one end of the first pin shaft (7) is used for being connected with the shell of the gearbox.
4. The parking mechanism according to claim 1, characterized in that:
one end of the parking rod (2) in the parking frame (1) is provided with a roller support (22), the roller support (22) is provided with second pin shafts (23) with the same number as the rollers (21), and the rollers (21) are correspondingly sleeved on the second pin shafts (23).
5. The parking mechanism according to claim 1, characterized in that: be equipped with two line type slotted holes (11) that set up side by side on parking frame (1), parking pole (2) are located two gyro wheels (21) are installed to the one end in parking frame (1), every gyro wheel (21) correspond the slip group and locate one in line type slotted hole (11).
6. The parking mechanism according to claim 1, characterized in that: the contact surface (52) comprises an unlocking limit position (521), an unlocking limit surface (522), a transition surface (523), a locking limit surface (524) and a locking limit position (525) which are sequentially connected, the unlocking limit surface (522) and the locking limit surface (524) are planes, the transition surface (523) is an arc surface, and the unlocking limit surface (522) and the transition surface (523) form a groove for the rolling of the roller (21).
7. The parking mechanism according to claim 1, characterized in that: the clamping part (51) is provided with an engaging surface (510) engaged with the ratchet wheel (4), and the engaging surface (510) is formed by combining a plurality of planes and arc surfaces.
8. The parking mechanism according to claim 7, characterized in that: the engagement surface (510) is trapezoidal, and the engagement surface (510) comprises a first arc surface (511), a first plane (512), a second arc surface (513), a second plane (514), a third arc surface (515) and a third straight line (516) which are sequentially connected.
9. The parking mechanism according to claim 1, characterized in that: the parking frame (1) is further provided with a heat treatment plate (8) on the inner wall far away from the parking rod (2), and the heat treatment plate (8) is located in a contact area right above the roller (21).
10. A vehicle mounted with the parking mechanism according to any one of claims 1 to 9, characterized in that: the parking mechanism is arranged on the gearbox, the parking frame (1) is connected with a shell of the gearbox, and the ratchet wheel (4) is connected with a main shaft of the gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061015.8A CN110878834A (en) | 2019-11-01 | 2019-11-01 | Parking mechanism and vehicle provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061015.8A CN110878834A (en) | 2019-11-01 | 2019-11-01 | Parking mechanism and vehicle provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110878834A true CN110878834A (en) | 2020-03-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911061015.8A Pending CN110878834A (en) | 2019-11-01 | 2019-11-01 | Parking mechanism and vehicle provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110878834A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114412989A (en) * | 2022-01-11 | 2022-04-29 | 广东交通职业技术学院 | Hydraulically driven parking mechanism, parking device and vehicle |
| CN115076367A (en) * | 2021-03-12 | 2022-09-20 | 北汽福田汽车股份有限公司 | Parking mechanism and vehicle |
| DE102022123810A1 (en) | 2022-09-16 | 2024-03-21 | Schaeffler Technologies AG & Co. KG | Parking lock device for a transmission with a parking lock wheel |
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| EP3620688A1 (en) * | 2018-09-07 | 2020-03-11 | DURA Automotive Holdings U.K., Ltd. | Parking lock system for a transmission of an automatic, hybrid or electric gearbox of a motor vehicle |
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| DE102018115548A1 (en) * | 2017-06-30 | 2019-01-03 | Schaeffler Technologies AG & Co. KG | Device and method for actuating a parking brake |
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| CN115076367A (en) * | 2021-03-12 | 2022-09-20 | 北汽福田汽车股份有限公司 | Parking mechanism and vehicle |
| CN114412989A (en) * | 2022-01-11 | 2022-04-29 | 广东交通职业技术学院 | Hydraulically driven parking mechanism, parking device and vehicle |
| DE102022123810A1 (en) | 2022-09-16 | 2024-03-21 | Schaeffler Technologies AG & Co. KG | Parking lock device for a transmission with a parking lock wheel |
| DE102022123810B4 (en) | 2022-09-16 | 2024-06-06 | Schaeffler Technologies AG & Co. KG | Parking lock device for a transmission with a parking lock gear |
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Application publication date: 20200313 |
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| RJ01 | Rejection of invention patent application after publication |