CN108591446B - Parking mechanism of automatic gearbox - Google Patents
Parking mechanism of automatic gearbox Download PDFInfo
- Publication number
- CN108591446B CN108591446B CN201810410323.6A CN201810410323A CN108591446B CN 108591446 B CN108591446 B CN 108591446B CN 201810410323 A CN201810410323 A CN 201810410323A CN 108591446 B CN108591446 B CN 108591446B
- Authority
- CN
- China
- Prior art keywords
- parking
- gear
- swing arm
- guide rod
- parking gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 210000000078 claw Anatomy 0.000 claims abstract description 29
- 238000001125 extrusion Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000000452 restraining effect Effects 0.000 claims description 9
- 230000037237 body shape Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Images
Classifications
-
- 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
- F16H63/3408—Locking or disabling mechanisms the locking mechanism being moved by the final actuating mechanism
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention discloses an automatic gearbox parking mechanism which comprises a parking mechanism shell, wherein a parking gear is arranged in the parking mechanism shell, a swing arm is hinged to the parking mechanism shell through a hinge shaft, a convex claw is arranged on the swing arm and is matched with a tooth groove area of the parking gear in an embedded mode, and a spring is arranged between the swing arm and the parking mechanism shell. When parking, the operating handle is shifted to a P gear, and the convex claw on the swing arm is embedded into the tooth groove area of the parking gear to realize parking; if the vehicle moves in the tooth groove area of the parking gear embedded by the convex claw, the tooth-shaped part of the parking gear is contacted with the convex claw and is abutted and matched, the extrusion displacement action of the elastic abutting mechanism is temporarily and even retracted, and the impact phenomenon caused by the fact that the convex claw is forcibly embedded into the tooth groove area of the parking gear is avoided, so that the parking mechanism provided by the invention not only can realize reliable parking, but also ensures safe and reliable matching of components in the parking mechanism, and prolongs the service life of the mechanism.
Description
Technical Field
The invention belongs to the field of automobile mechanical engineering, and particularly relates to a parking mechanism of an automatic gearbox.
Background
The automobile parking mechanism is used in the automobile parking state, and the automobile is kept still and does not move no matter in the flat road or slope state, so that the safety of the automobile and the surrounding environment in the parking state is guaranteed.
The parking mechanism applied to the existing automatic transmission is used for locking a transmission shaft by combining a parking gear and a parking locking claw to realize parking. The parking mechanism is generally connected with a gearbox shell at a parking locking claw, and force generated by a parking gear is concentrated at the connection part during parking, so that the shell at the connection part is easy to damage; in addition, sometimes a user can hang a parking gear to park when the automobile is not completely stopped, the parking gear is directly clamped by the parking locking claw, the impact is large, the comfort is reduced, and meanwhile, the parking mechanism is easy to break down due to the impact force.
Disclosure of Invention
The invention aims to provide a parking mechanism of an automatic gearbox, which effectively overcomes the impact phenomenon among the components of the mechanism in the parking process.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an automatic gearbox parking mechanism, includes parking mechanism's casing, is provided with the parking gear who links to each other with derailleur power take off gear or axle or links to each other with differential mechanism's power input gear or axle in the parking mechanism casing, its characterized in that: the parking gear is connected with a power output gear or a shaft of the transmission or is coaxially or parallelly arranged with a power input gear or a shaft of the differential, the swing arm is hinged to the parking mechanism shell through a hinge shaft, a shaft core of the hinge shaft is parallel to a rotary shaft core of the parking gear, a lug claw is arranged on the swing arm and is in embedded fit with a tooth groove area of the parking gear, a spring is arranged between the swing arm and the parking mechanism shell, the spring provides elasticity to drive the swing arm to rotate towards a position far away from the parking gear and is separated from the tooth groove area of the parking gear together with the lug claw, and an elastic pressing mechanism is further arranged on the parking mechanism shell and presses the swing arm to rotate towards a position close to the parking.
According to the technical scheme, when parking is needed, the operating handle is shifted to the P gear, the elastic pressing mechanism presses the swing arm to rotate to a position close to the parking gear, and the convex claw on the swing arm is embedded into the tooth groove area of the parking gear to achieve parking; if the vehicle moves in the tooth groove area of the parking gear in which the convex claw is embedded, namely the parking gear connected with a power input gear or a shaft of the differential mechanism rotates, the tooth-shaped part of the parking gear is in contact and abutted fit with the convex claw, the contact force is transmitted to the elastic abutting mechanism through the swing arm, and the extrusion displacement action of the elastic abutting mechanism is temporarily stopped or even retracted, so that a moving space and conditions are provided for the displacement of the tooth-shaped part of the parking gear away from the convex claw, and the impact phenomenon caused by the forced embedding of the convex claw in the tooth groove area of the parking gear is avoided.
Drawings
FIG. 1 is a structural view of a parking state of the present invention;
FIG. 2 is a structural view of the non-parking state of the present invention;
FIG. 3 is a schematic perspective view of a parking gear according to the present invention;
FIG. 4 is a schematic perspective view of a parking swing arm according to the present invention;
FIG. 5 is a schematic perspective view of a confinement ring of the present invention;
fig. 6 is a perspective view of the guide bar assembly according to the present invention.
Detailed Description
The utility model provides an automatic gearbox parking mechanism, includes parking mechanism casing 10, is provided with in the parking mechanism casing 10 and links to each other with derailleur power take off gear or axle or with the power input gear or the axle of differential mechanism and links to each other parking gear 20 which characterized in that: the parking gear 20 is connected with a power output gear or shaft of a transmission or is arranged coaxially or in parallel with a power input gear or shaft of a differential, the swing arm 30 is hinged to the parking mechanism shell 10 through a hinge shaft 40, a shaft core of the hinge shaft 40 is arranged in parallel with a rotary shaft core of the parking gear 20, a convex claw 31 is arranged on the swing arm 30 and is matched with a tooth groove area of the parking gear 20 in an embedded mode, a spring 50 is arranged between the swing arm 30 and the parking mechanism shell 10, the elastic force provided by the spring 50 drives the swing arm 30 to rotate towards a position far away from the parking gear 20 and is separated from the tooth groove area of the parking gear 20 together with the convex claw 31, and an elastic pressing mechanism 60 is further arranged on the parking mechanism shell 10 and presses the swing arm 30 to rotate towards a.
The elastic pressing mechanism 60 comprises a guide rod 61, the guide rod 61 moves along the length direction of the guide rod, an extrusion block 62 is arranged on the guide rod 61, the matching part of the extrusion block 62 and the swing arm 30 is located at the arm body part back to the convex claw 31, the extrusion part of the extrusion block 62 and the swing arm 30 is in an inclined plane shape, a floating spring 63 is arranged between the extrusion block 62 and the guide rod 61, and the floating spring 63 provides elastic force to drive the extrusion block 62 to move towards the swing arm 30 and extrude the swing arm 30 to rotate towards the position close to the parking gear 20.
The parking gear 20 is mounted by its internal splines on a transmission member which may be either a transmission power take-off gear or shaft or a power input gear or shaft of a differential.
The parking mechanism is mounted to the parking mechanism housing 10. the parking mechanism housing 10 may be a separately machined part that is then mounted to the transmission housing, or may be machined as part of the transmission housing using the preferred embodiment described below.
When the user parks the vehicle, the parking lever is placed in the P-range position to push the guide rod 61 to move downward from the position shown in fig. 2 to the position shown in fig. 1. When the guide rod 61 moves downwards, the floating spring 63 pushes the extrusion block 62 to move downwards, the extrusion block 62 presses the swing arm 30 to rotate towards the position close to the parking gear 20, and the convex claw 31 is embedded into the tooth groove area of the parking gear 20, so that parking is realized. At this time, if the vehicle is moving slowly, the convex claw 31 is resisted by the tooth-shaped part of the parking gear 20, the swing arm 30 rotates to a position far away from the parking gear 20 and drives the extrusion block 62 to compress the floating spring 63 to move upwards, so that the swing arm 30 can swing to a position far away from the parking gear 20, the impact and the collision between the convex claw 31 and the parking gear 20 are reduced, meanwhile, the vehicle can be stopped in an auxiliary mode, and finally, safe parking is achieved.
Preferably, the parking mechanism housing 10 is a part of a transmission housing, the pressing block 62 includes a rotation body shape formed by a conical table portion 621 and a cylindrical portion 622, and the pressing block 62 and the guide rod 61 are concentrically arranged. The extrusion block 62 is designed into a revolving body shape formed by a conical table part 621 and a cylindrical part 622, so that the conical table part 621 can firstly contact with the swing arm 30, and gradually extrude and push the swing arm 30 to drive the convex claw 31 to enter the tooth groove of the parking gear 20, when the guide rod 61 moves downwards to the position shown in fig. 1, the cylindrical part 622 on the extrusion block 62 is abutted and matched with the swing arm 30, the convex claw 31 completely enters the tooth groove of the parking gear 20 and limits the rotation of the parking gear 20, and at this time, the locking state of the parking brake is completed. The engagement between the tapered land 621 and the swing arm 30 ensures a free engagement between the claw 31 and the tooth groove of the parking gear 20.
The parking gear 20 comprises a parking gear section 21 and a frustum section 22 which are coaxially and axially arranged, a guide rod 61 in the elastic abutting mechanism 60 is fixedly connected with a restraining ring 64 which is sleeved at the position of the frustum section 22, and the restraining ring 64 is provided with a conical hole wall 644 which is matched with the conical degree of the frustum section 22.
When the guide rod 61 moves, the restraining ring 64 is driven to move towards the frustum section 22 of the parking gear 20, when the conical hole wall 644 of the restraining ring 64 is in contact with the conical surface of the frustum section 22, if the parking gear 20 rotates at a low speed, the conical hole wall 644 of the restraining ring 64 performs friction deceleration on the conical surface contact of the frustum section 22, the rotation speed of the parking gear 20 is further reduced until the parking gear stops rotating, and the convex claw 31 gradually enters the tooth groove of the parking gear 20 along with the rotation speed reduction process of the parking gear 20 and limits the rotation of the parking gear 20. It can be seen that, whether the vehicle still moves slowly or not, the parking gear 20 must finally stop rotating along with the process of approaching and contacting the restraint ring 64 with the frustum section 22 of the parking gear 20, and the convex claw 31 gradually and finally realizes the matching with the tooth socket when the parking gear 20 stops rotating so as to complete the parking locking. Therefore, in the parking process, the invention can effectively avoid the impact and collision between the parts and reduce the faults of the parking mechanism.
In the above solution, in order to ensure that the tapered hole wall 644 of the restraining ring 64 is smoothly matched with the tapered surface of the frustum section 22, the position of the restraining ring 64 needs to be restrained, so that the moving manner of the guide rod 61 needs to be restrained, that is, the two ends of the guide rod 61 and the guide hole on the parking mechanism housing 10 form a moving fit of circumferential limiting axial movement. As shown in fig. 1, 2 and 6, the guide rod 61 is provided with first, second and third flat keys 611 and 612 to be matched with key slots on the wall of the guide hole on the parking mechanism housing 10.
It is further preferable that the connection arm 641 extends outward from the annular ring on the restriction ring 64, the connection arm 641 has a connection hole 642 to fit over the guide rod 61, a positioning connection hole 643 is formed on a hole wall of the connection hole 642, and the positioning connection hole 643 has a connection pin or screw 645 to connect the connection arm 641 and the guide rod 61 together.
The floating spring 63 is sleeved on the rod body of the guide rod 61 between the connecting arm 641 and the extrusion block 62, the floating spring 63 is a helical compression spring, and the floating spring 63 is pressed against the end face of the cylindrical part 622 with the large diameter section. Above-mentioned scheme can guarantee that extrusion block 62 can implement according to the design requirement and remove, guarantee and swing arm 30 between the cooperation.
The parking gear 20 further comprises a cylindrical section 23 between the parking gear section 21 and the frustum section 22, and the outer diameter sizes of the parking gear section 21, the cylindrical section 23 and the frustum section 22 are sequentially reduced from large to small along the axial direction. The scheme can meet the basic premise that the parking gear 20 realizes parking locking in the process from speed reduction to rotation stop, and the structure is most reliable and simple.
Claims (6)
1. The utility model provides an automatic gearbox parking mechanism, includes parking mechanism casing (10), is provided with parking gear (20) that link to each other with derailleur power take off gear or axle or link to each other with the power input gear or the axle of differential mechanism in parking mechanism casing (10), its characterized in that: the parking gear (20) is connected with a power output gear or shaft of a transmission or is coaxially or parallelly arranged with a power input gear or shaft of a differential, the swing arm (30) is hinged on the parking mechanism shell (10) through a hinge shaft (40), a shaft core of the hinge shaft (40) is arranged in parallel with a rotary shaft core of the parking gear (20), a convex claw (31) is arranged on the swing arm (30) and is in embedded fit with a tooth space area of the parking gear (20), a spring (50) is arranged between the swing arm (30) and the parking mechanism shell (10), the spring (50) provides elastic force to drive the swing arm (30) to rotate towards a position far away from the parking gear (20) and separate from the tooth space area of the parking gear (20) together with the convex claw (31), and the parking mechanism shell (10) is further provided with an elastic pressing mechanism (60) to press the swing arm (30) to rotate towards a position close to the parking gear (20);
the elastic pressing mechanism (60) comprises a guide rod (61), the guide rod (61) moves along the length direction of the guide rod, an extrusion block (62) is arranged on the guide rod (61), the matching position of the extrusion block (62) and the swing arm (30) is located at the position of an arm body back to the convex claw (31), the extrusion part of the extrusion block (62) and the swing arm (30) is in an inclined plane shape, a floating spring (63) is arranged between the extrusion block (62) and the guide rod (61), and the floating spring (63) provides elastic force to drive the extrusion block (62) to move towards the swing arm (30) and extrude the swing arm (30) to rotate towards the position close to the parking gear (20);
the parking gear (20) comprises a parking gear section (21) and a frustum section (22) which are coaxially and axially arranged in a forward extending manner, a guide rod (61) in the elastic abutting mechanism (60) is fixedly connected with a restraining ring (64) which is sleeved at the position of the frustum section (22), and the restraining ring (64) is provided with a conical hole wall (644) matched with the conical degree of the frustum section (22).
2. The automatic transmission parking mechanism of claim 1, wherein: the parking mechanism shell (10) is a part of a transmission shell, the extrusion block (62) comprises a revolving body shape formed by a conical table part (621) and a cylindrical part (622), and the extrusion block (62) and the guide rod (61) are arranged in the same core.
3. The automatic transmission parking mechanism of claim 1, wherein: two ends of the guide rod (61) and a guide hole on the parking mechanism shell (10) form the moving fit of circumferential limiting axial movement.
4. The automatic transmission parking mechanism of claim 1, wherein: the restriction ring (64) is provided with a connecting arm (641) extending towards the outside of the ring, the connecting arm (641) is provided with a connecting hole (642) which is sleeved on the guide rod (61), the hole wall of the connecting hole (642) is provided with a positioning connecting hole (643), and the positioning connecting hole (643) is provided with a connecting pin or a screw (645) to connect the connecting arm (641) and the guide rod (61) into a whole.
5. The automatic transmission parking mechanism of claim 4, wherein: a floating spring (63) is sleeved on the rod body of the guide rod (61) between the connecting arm (641) and the extrusion block (62), the floating spring (63) is a spiral pressure spring, and the floating spring (63) is pressed on the end face of the cylindrical part (622) of the large-diameter section.
6. The automatic transmission parking mechanism of claim 1, wherein: the parking gear (20) further comprises a cylindrical section (23) between the parking gear section (21) and the frustum section (22), and the outer diameter sizes of the parking gear section (21), the cylindrical section (23) and the frustum section (22) along the axial direction are sequentially reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410323.6A CN108591446B (en) | 2018-05-02 | 2018-05-02 | Parking mechanism of automatic gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810410323.6A CN108591446B (en) | 2018-05-02 | 2018-05-02 | Parking mechanism of automatic gearbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108591446A CN108591446A (en) | 2018-09-28 |
| CN108591446B true CN108591446B (en) | 2020-02-07 |
Family
ID=63619582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810410323.6A Active CN108591446B (en) | 2018-05-02 | 2018-05-02 | Parking mechanism of automatic gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591446B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3944920B2 (en) * | 1995-11-17 | 2007-07-18 | マツダ株式会社 | Shifting mechanism of automatic transmission |
| JP3156637B2 (en) * | 1997-06-13 | 2001-04-16 | 日産自動車株式会社 | Parking device for automatic transmission |
| CN102506168A (en) * | 2011-10-21 | 2012-06-20 | 奇瑞汽车股份有限公司 | Parking mechanism of automatic transmission for vehicle |
| JP5816153B2 (en) * | 2012-10-05 | 2015-11-18 | 本田技研工業株式会社 | Parking mechanism |
| US20140116835A1 (en) * | 2012-10-31 | 2014-05-01 | Ford Global Technologies, Llc | Vehicle park lock assembly |
| CN105333140B (en) * | 2015-11-26 | 2017-12-15 | 合肥工业大学 | A kind of automotive transmission parking locking mechanism |
| CN106051154A (en) * | 2016-05-23 | 2016-10-26 | 广州汽车集团股份有限公司 | Electric parking mechanism and automobile |
-
2018
- 2018-05-02 CN CN201810410323.6A patent/CN108591446B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108591446A (en) | 2018-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107245843B (en) | Clutch mechanism of washing machine and washing machine | |
| CN101722945B (en) | Brake caliper assembly for electronic parking braking system of vehicle | |
| CN212106898U (en) | Parking device and vehicle | |
| CN2767749Y (en) | Roller type monodirectional device | |
| CN108591446B (en) | Parking mechanism of automatic gearbox | |
| CN112943870A (en) | Automatic transmission | |
| CN212804189U (en) | Automatic derailleur shift tower drive formula parking mechanism | |
| CN201568482U (en) | Novel brake caliper assembly of vehicle electrical parking brake system | |
| CN207333685U (en) | Parking device and vehicle | |
| CN211145322U (en) | Parking brake mechanism for automobile transmission | |
| CN113524993A (en) | Self-locking electric trailer hook device | |
| CN203356332U (en) | Punching machine for thin-wall sectional material | |
| CN204164337U (en) | A kind of shifting of transmission halting mechanism | |
| CN201071777Y (en) | Clutch for shaking-free starter of diesel engine | |
| CN212423372U (en) | Clutch type chain wheel driving device | |
| CN109591578B (en) | Coupler of vehicle hybrid power system | |
| CN209972427U (en) | Vehicle electronic parking braking power device and vehicle electronic parking braking system | |
| CN216242116U (en) | Torque and thrust conversion device | |
| CN209196096U (en) | Hydraulic halting mechanism drive mechanism and hydraulic halting mechanism and vehicle | |
| CN112212000A (en) | Automatic transmission | |
| CN213776167U (en) | Teaching fork truck auxiliary brake device | |
| CN215172164U (en) | Parking mechanism and car | |
| CN220031680U (en) | Driving device and vehicle | |
| CN201301937Y (en) | Vehicle speed shifting mechanism | |
| CN2441930Y (en) | Motor type axial clutch for door lock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |