CN212080126U - Parking mechanism and transmission - Google Patents
Parking mechanism and transmission Download PDFInfo
- Publication number
- CN212080126U CN212080126U CN202020013643.0U CN202020013643U CN212080126U CN 212080126 U CN212080126 U CN 212080126U CN 202020013643 U CN202020013643 U CN 202020013643U CN 212080126 U CN212080126 U CN 212080126U
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- pawl
- parking
- guide
- shaft hole
- driving
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Abstract
The utility model relates to an automotive transmission technical field especially relates to a parking mechanism and derailleur, including parking direction subassembly, ratchet and be used for realizing the pawl of parking action with the ratchet cooperation, parking direction subassembly includes the driving piece and is used for contacting and promoting the guide that the pawl removed with the pawl, and the driving piece is offered and is used for the shaft hole of being connected through transmission shaft and parking drive unit's output transmission, and the guide rotates to be connected in the axis rotation in driving piece duplex winding shaft hole. The utility model discloses simple structure helps reducing the wearing and tearing of pawl and parking direction subassembly, improves the life and the driven efficiency of pawl and parking direction subassembly to reduce powder and piece that parking direction subassembly and pawl friction produced, improved the cleanliness in the derailleur.
Description
Technical Field
The utility model relates to an automotive transmission technical field especially relates to a parking mechanism and derailleur.
Background
The parking mechanism in the prior art is only divided into two categories, namely a cam type parking mechanism and a taper pin pull rod type parking mechanism. The design of the parking mechanism requires four major objectives: 1. reliable parking function 2, suitable shifting force 3, safe parking speed 4, parking movement distance according to the requirements of the legislation.
In the taper pin pull rod type parking mechanism used in the current market, the process of realizing the parking function by the pawl is realized by extruding the pawl downwards through the movement of the taper pin, and in the moving process of the taper pin, the taper pin and the pawl slide relatively, so that larger sliding friction force can be generated, and larger abrasion can be caused to the taper pin and the pawl. Therefore, the material and the processing of the pawl and the taper pin are high to ensure the functionality and the safety, so that a large processing cost is generated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reduce wearing and tearing that spare part that the drive pawl removed and pawl sliding contact produced, and improve life's parking mechanism and derailleur.
In order to achieve the purpose, the utility model provides a parking mechanism, which comprises a parking guide component, a ratchet wheel and a pawl, wherein the pawl is used for being matched with the ratchet wheel to realize parking action, and the parking guide component is arranged on one side of the pawl, which is back to the ratchet wheel; the parking guide assembly comprises a driving piece and a guide piece, the guide piece is used for being in contact with the pawl and pushing the pawl to move, the driving piece is provided with a shaft hole, the shaft hole is used for being in transmission connection with the output end of the parking driving unit through a transmission shaft, and the guide piece is rotatably connected to the driving piece and can rotate around the axis of the shaft hole.
Optionally, the shaft hole is eccentrically arranged in the driving part, and the guide part is sleeved on the periphery of the driving part and is rotatably connected with the driving part.
Optionally, a gap is formed between the inner side surface of the guide member and the outer side surface of the driving member, and the gap is provided with a rolling assembly for generating rolling friction when the inner side surface of the guide member and the outer side surface of the driving member rotate relatively.
Optionally, the rolling assembly includes a plurality of bearing needles arranged along a circumferential direction of the inner race of the guide.
Optionally, a key groove used for being connected with the transmission shaft is formed in the inner side wall of the shaft hole.
Optionally, the guide member is arranged coaxially with the drive member.
Another object of the present invention is to provide a transmission, including the above-mentioned parking mechanism.
Implement the utility model discloses an embodiment has following technological effect:
the utility model discloses when the transmission shaft drives the driving piece and rotates, the driving piece drives the axis rotation of guide around the shaft hole, thereby promote pawl and ratchet cooperation realization parking action, in addition, the guide is promoting the pawl and removes the in-process, the guide can rotate around the shaft hole axis for the driving piece, guide lateral surface and a side contact and the relative movement of pawl ratchet dorsad, the guide rotates and will convert rolling friction into with the sliding friction that the pawl produced this moment, thereby reduce the wearing and tearing between pawl and the parking direction subassembly, optimize car NVH performance and prolong the life of spare part.
In addition, the guide part is in contact with the pawl and pushes the pawl to generate rolling friction with the pawl in the moving process, and the abrasion between the pawl and the guide part is reduced due to relative sliding friction, so that powder and chips generated by damage of the guide part and the pawl are reduced, and the cleanliness in the transmission is improved.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a parking guide assembly according to a preferred embodiment of the present invention.
Description of reference numerals:
1. parking guide assembly, 11, driving piece, 111, shaft hole, 112, key groove, 12, guide piece, 13, rolling assembly, 2, pawl, 3 and ratchet wheel.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 and 2, the present embodiment provides a parking mechanism, including a parking guide assembly 1, a ratchet wheel 3, and a pawl 2 for cooperating with the ratchet wheel 3 to implement a parking action, specifically, one end of the pawl 2 is hinged, the other end is a free end, and one side of the pawl 2 opposite to the ratchet wheel 3 is provided with a tooth portion engaged with the ratchet wheel 3; the parking guide assembly 1 comprises a driving part 11 and a guide part 12 which is used for contacting with the pawl 2 and pushing the pawl 2 to move, the driving part 11 is provided with a shaft hole 111 which is used for being in transmission connection with an output end of the parking driving unit through a transmission shaft, the outer side surface of the guide part 12 abuts against one side surface, back to the ratchet wheel 3, of the pawl 2, and the guide part 12 is rotatably connected to the driving part 11 and can rotate around the axis of the shaft hole 111. The utility model discloses when the transmission shaft drives driving piece 11 and rotates, driving piece 11 drives guide 12 and rotates around the axis in shaft hole 111, thereby guide 12 contacts and promotes 2 movements of pawl with pawl 2, the parking when 2 blocks of pawl go into ratchet 3's groove, in addition, guide 12 is promoting 2 removal in-process pawls, guide 12 is driving piece 11 relatively and rotates around shaft hole 111 axis, guide 12 lateral surface and 2 side contact and the relative movement of ratchet 3 dorsad of pawl, guide 12 rotates and will convert the rolling friction into with the sliding friction that pawl 2 produced this moment, thereby reduce the wearing and tearing between pawl 2 and the parking direction subassembly 1, optimize car NVH performance and prolong the life of spare part.
In addition, the friction between the pawl 2 and the parking guide assembly 1 is reduced, so that the requirement of abrasion resistance of materials for manufacturing the pawl 2 and the parking guide assembly 1 is reduced, and the manufacturing cost and the processing cost of the transmission are reduced.
Further, this embodiment does not need to carry out structural improvement to pawl 2 to guarantee the integrative integrality of pawl 2, help guaranteeing the structural strength of pawl 2.
Referring to fig. 2, in the embodiment, the shaft hole 111 is eccentrically disposed on the driving member 11, the guiding member 12 is sleeved outside the driving member 11 and is rotatably connected to the driving member 11, and further, the guiding member 12 and the driving member 11 are coaxially disposed, so as to simplify the structure of the parking guiding assembly 1, reduce the space occupied by the parking mechanism in the vehicle, and improve the space utilization of the vehicle.
In this embodiment, a gap is formed between the inner side surface of the guide member 12 and the outer side surface of the driving member 11, and the gap is provided with a rolling assembly 13 for generating rolling friction when the inner side surface of the guide member 12 and the outer side surface of the driving member 11 rotate relatively, so that the efficiency of the relative rotation of the guide member 12 and the driving member 11 is improved, and the resistance of the relative rotation of the guide member 12 and the driving member 11 is reduced.
Further, the key slot 112 that is used for being connected with the transmission shaft is seted up to the 111 inside walls in shaft hole of this embodiment, and when being connected with parking drive unit's output through the transmission shaft, driving piece 11 passes through key slot 112 key-type connection with the transmission shaft, improves driving piece 11 and transmission shaft and is connected synchronous stability.
In addition, because the guide 12 contacts the pawl 2 and pushes the pawl 2 to generate rolling friction with the pawl 2 in the moving process, the relative sliding friction reduces the abrasion of the pawl 2 and the guide 12, thereby reducing powder and debris generated by the damage of the guide 12 and the pawl 2 and improving the cleanliness in the transmission.
Further, the embodiment also provides a transmission, which comprises the parking mechanism, so that the loss of the transmission is reduced, the cleanliness in the transmission is improved, and the service life of the transmission is prolonged.
To sum up, the utility model discloses simple structure helps reducing pawl 2 and parking direction subassembly 1's wearing and tearing, improves pawl 2 and parking direction subassembly 1's life and driven efficiency to reduce powder and piece that parking direction subassembly 1 and pawl 2 friction produced, improved the cleanliness in the derailleur.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (7)
1. The parking mechanism is characterized by comprising a parking guide assembly, a ratchet wheel and a pawl, wherein the pawl is used for being matched with the ratchet wheel to realize parking action, and the parking guide assembly is arranged on one side of the pawl, which is back to the ratchet wheel; the parking guide assembly comprises a driving piece and a guide piece, the guide piece is used for being in contact with the pawl and pushing the pawl to move, the driving piece is provided with a shaft hole, the shaft hole is used for being in transmission connection with the output end of the parking driving unit through a transmission shaft, and the guide piece is rotatably connected with the driving piece and can rotate around the axis of the shaft hole.
2. The parking mechanism of claim 1, wherein the shaft hole is eccentrically disposed in the driving member, and the guide member is sleeved on an outer circumference of the driving member and rotatably connected to the driving member.
3. The parking mechanism of claim 2, wherein a gap is provided between the inner side surface of the guide member and the outer side surface of the driving member, and the gap is provided with a rolling assembly for generating rolling friction when the inner side surface of the guide member and the outer side surface of the driving member relatively rotate.
4. The park mechanism according to claim 3, wherein the rolling assembly includes a plurality of bearing needles arranged circumferentially along the inner race of the guide.
5. The parking mechanism according to any one of claims 1 to 4, wherein a key groove for connecting with a transmission shaft is formed on an inner side wall of the shaft hole.
6. Parking mechanism according to any of claims 1-4, wherein the guide is arranged coaxially with the driver.
7. A transmission characterized by comprising a parking mechanism according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020013643.0U CN212080126U (en) | 2020-01-02 | 2020-01-02 | Parking mechanism and transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020013643.0U CN212080126U (en) | 2020-01-02 | 2020-01-02 | Parking mechanism and transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212080126U true CN212080126U (en) | 2020-12-04 |
Family
ID=73566783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020013643.0U Active CN212080126U (en) | 2020-01-02 | 2020-01-02 | Parking mechanism and transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212080126U (en) |
-
2020
- 2020-01-02 CN CN202020013643.0U patent/CN212080126U/en active Active
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