CN115264056A - Transmission parking actuating mechanism - Google Patents
Transmission parking actuating mechanism Download PDFInfo
- Publication number
- CN115264056A CN115264056A CN202210870468.0A CN202210870468A CN115264056A CN 115264056 A CN115264056 A CN 115264056A CN 202210870468 A CN202210870468 A CN 202210870468A CN 115264056 A CN115264056 A CN 115264056A
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- China
- Prior art keywords
- parking
- push rod
- pawl
- rod assembly
- gear shifting
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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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
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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
- F16H63/32—Gear shift yokes, e.g. shift forks
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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
- F16H63/3458—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire
- F16H63/3466—Parking lock mechanisms or brakes in the transmission with electric actuating means, e.g. shift by wire using electric motors
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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 transmission parking actuating mechanism which comprises a gear shifting motor, a parking push rod assembly, a parking guide plate, a parking pawl, a parking ratchet wheel, a pawl pin and a pawl return spring, wherein one end of the parking push rod assembly is respectively matched with the parking guide plate and the parking pawl, the parking pawl is matched with the parking ratchet wheel, the parking pawl is pivoted with the pawl pin, the pawl return spring is connected with the parking pawl, the transmission parking actuating mechanism also comprises a gear shifting drum, the gear shifting drum is connected with the gear shifting motor, a guide profile groove which is in sliding fit with the other end of the parking push rod assembly is arranged on the peripheral surface of the gear shifting drum, the guide profile groove is a cam groove, and the guide profile groove comprises: the parking push rod assembly is driven to axially move when the gear shifting drum rotates so as to realize a parking locking P-shaped driving groove section; and when the gear shifting drum rotates, the parking push rod assembly axially moves to realize a P-withdrawing driving groove section for parking release. The invention has the advantage of reducing the occupied space.
Description
Technical Field
The invention relates to the technical field of automobile transmissions, in particular to an automobile transmission parking actuating mechanism.
Background
The existing electric automobile parking mechanism has two structural forms of gear and rack transmission and a hydraulic push rod, and the gear and rack type parking mechanism driven by a motor has the advantages that the motor has higher rotating speed, so that power cannot be directly transmitted to a gear and rack, a speed reducer needs to be arranged between the gear and rack and the motor, the parking mechanism is complex and difficult to control, and the size of an automobile transmission box body is increased. In addition, the parking gear of the existing automobile parking mechanism is basically installed on an output shaft (a differential half shaft), and the resistance distance of the parking mechanism is large, so that the requirement on the structural strength of the parking mechanism is high. In addition, because the space of the power cabin of the automobile is limited, the driving part of the existing parking mechanism basically mainly moves linearly, and the parking mechanism with the structure needs to occupy a large space, so that the arrangement inside the transmission, particularly the arrangement of the parking mechanism, is often a relatively troublesome problem for automobile engineers.
Disclosure of Invention
The invention provides a transmission parking actuating mechanism capable of reducing occupied space.
The technical scheme for solving the problems is as follows:
derailleur parking actuating mechanism, including gear shifting motor, parking push rod assembly, the parking deflector, the parking pawl, parking ratchet, the pawl round pin, pawl return spring, the one end of parking push rod assembly respectively with parking deflector and parking pawl cooperation, parking pawl and parking ratchet cooperation, parking pawl and pawl round pin pivot connection, pawl return spring is connected with the parking pawl, still include the drum of shifting, the drum of shifting is connected with gear shifting motor, be equipped with on the drum of shifting global with parking push rod assembly other end sliding fit's direction profile groove, direction profile groove is the cam groove, direction profile groove includes:
the parking push rod assembly is driven to axially move when the gear shifting drum rotates so as to realize a parking locking P-shaped driving groove section;
and when the gear shifting drum rotates, the parking push rod assembly axially moves to realize a P-withdrawing driving groove section for parking release.
Furthermore, direction profile groove still includes from the locking groove section, and when parking push rod assembly and from the locking groove section cooperation, the drum of shifting forms the restriction to the axial displacement of parking push rod assembly.
Further, parking push rod assembly includes push rod link assembly, parking push rod, push rod spring, parking cam, push rod link assembly include the shifting fork frame and with shift drum direction profile groove complex shifting block, push rod link assembly and parking push rod fixed connection, the push rod spring housing is on the parking push rod, the one end and the parking push rod of push rod spring or the shifting fork frame support, the one end and the parking cam of push rod spring support, the parking cam be equipped with parking deflector and parking pawl complex locking surface.
Furthermore, the shifting blocks are arranged on two opposite side walls of the shifting fork frame.
Furthermore, the parking deflector is equipped with the bolt mounting hole that is used for going on installing with the derailleur box, with derailleur box complex box locating surface and locking face, locking face and parking push rod assembly cooperation.
The working principle of the invention is summarized as follows: the gear shifting drum is driven to rotate through the gear shifting motor, and the guide profile groove on the gear shifting drum drives the parking push rod assembly to move axially, so that parking locking and unlocking functions are achieved.
The invention has the beneficial effects that: the parking actuating mechanism has the advantages of compact structure and small occupied space compared with the prior art, and the parking actuating mechanism with the structure can be used on different vehicle models, so that the application range of the parking mechanism is widened.
Drawings
FIG. 1 is a schematic illustration of a parking actuator of a transmission for a motor vehicle according to the present invention;
FIG. 2 is a schematic view of a shift drum according to the present invention;
FIG. 3 is a schematic structural view of a parking pushrod assembly according to the present invention;
FIG. 4 is a schematic structural view of a parking guide plate according to the present invention;
FIG. 5 is a schematic structural view of a parking pawl according to the present invention;
FIG. 6 is a schematic structural view of a parking ratchet wheel according to the present invention;
reference numbers in the drawings:
the parking device comprises a gear shifting motor 1, a gear shifting drum 2, a connecting shaft 21, a guide profile groove section 22, a P-parking drive groove section 23, a P-withdrawing drive groove section 24, a self-locking groove section 25, a parking push rod assembly 3, a push rod connecting rod assembly 31, a parking push rod 32, a push rod spring 33, a parking cam 34, a shifting fork 311, a shifting head 312, a parking guide plate 4, a bolt mounting hole 41, a box positioning surface 42, a locking surface 43, a parking pawl 5, pawl teeth 51, spring mounting holes 52, pawl grooves 53, a parking ratchet wheel 6, a ratchet groove 61, ratchet teeth 62, a pawl pin 7 and a pawl return spring 8.
Detailed Description
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the scope of the invention.
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are described in more detail with reference to the drawings in the embodiments of the present invention. The described embodiments are only some, but not all embodiments of the invention. The embodiments described by referring to the drawings are exemplary and intended to be illustrative of the invention and should not be construed as limiting the invention in a simple manner. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, shall fall within the protection scope of the invention. The invention is described in detail below with reference to the following figures and specific examples:
derailleur parking actuating mechanism includes gear motor 1, shift drum 2, parking push rod assembly 3, parking deflector 4, parking pawl 5, parking ratchet 6, pawl round pin 7, pawl return spring 8, explains in detail below every part and the relation between each part:
shift drum 2 is connected with gear shift motor 1, and the one end of shift drum 2 is equipped with connecting axle 21, and shift drum 2 passes through connecting axle 21 to be connected with motor 1's output, is equipped with on shift drum 2 global with parking push rod assembly 3 other end sliding fit's direction profile groove 22, direction profile groove 22 be the cam groove and be the continuous arrangement on shift drum 2 global.
The guide profile groove 22 includes: a P-parking drive groove section 23 for driving the parking push rod assembly 3 to move axially to achieve parking lock when the shift drum 2 rotates, and a P-withdrawing drive groove section 24 for driving the parking push rod assembly 3 to move axially to achieve parking release when the shift drum 2 rotates.
The guiding profile groove 22 further comprises a self-locking groove section 25, and when the parking push rod assembly 3 is matched with the self-locking groove section 25, the axial movement of the parking push rod assembly 3 is limited by the gear shift drum 2. The self-locking groove section 25 is used for enabling the parking push rod assembly 3 to be incapable of axially moving under the abutting action formed by the side wall surface of the self-locking groove section 25 and the parking push rod assembly 3, at least one part of the self-locking groove section 25 abutting against the parking push rod assembly 3 is a linear profile, when the gear shifting drum 2 does not rotate, the abutting against of the self-locking groove section 25 and the parking push rod assembly 3 is in a holding state, therefore, the parking push rod assembly 3 cannot axially move, and only when the gear shifting drum 2 rotates, the self-locking can be released.
Parking push rod assembly 3's one end respectively with parking deflector 4 and the cooperation of parking pawl 5, parking push rod assembly 3 includes push rod link assembly 31, parking push rod 32, push rod spring 33, parking cam 34, push rod link assembly 31 include shifting fork frame 311 and with 2 direction profile groove 22 complex shifting block 312 of shift drum, in this embodiment, all install on two relative lateral walls of shifting fork frame 311 shifting block 312, shifting block 312 is cylindricly, shifting block 312 and direction profile groove 22 sliding fit, shifting block 312 and the riveting of shifting fork frame 311. When the shift drum 2 rotates, the parking lock is achieved or the parking release is achieved by pressing the dial 312 through the guide profile groove 22.
The parking device comprises a push rod connecting rod assembly 31, a parking push rod 32, a push rod spring 33, a parking push rod 32 or a fork shifting frame 311, a parking cam 34 and a parking guide plate 4, wherein the push rod connecting rod assembly 31 is fixedly connected with the parking push rod 32, one end of the parking push rod 32 is fixed with the push rod connecting rod assembly 31, the push rod spring 33 is sleeved on the parking push rod 32, one end of the push rod spring 33 abuts against the parking push rod 32 or the fork shifting frame 311, one end of the push rod spring 33 abuts against the parking cam 34, the parking cam 34 is fixed at the other end of the parking push rod 32, the parking cam 34 is provided with a locking surface matched with the parking guide plate 4 and the parking pawl 5, and the locking surface is a curved surface or a conical surface
The parking guide plate 4 is provided with a bolt mounting hole 41 used for mounting with a transmission case, a case positioning surface 42 matched with the transmission case and a locking surface 43 matched with the parking push rod assembly 3, and the locking surface 43 is matched with the parking push rod assembly 3. The parking guide plate 4 is fixedly connected with the transmission case body by bolts penetrating through the bolt mounting holes 41, the case body positioning surface 42 is in contact with the transmission case body during operation to bear impact load, and the locking surface 43 is matched and locked with the surface of the parking cam 34.
Parking pawl 5 and parking ratchet 6 cooperation, parking pawl 5 is equipped with pawl tooth 51, and parking pawl 5 and pawl pin 7 pivot connection can use the center of pawl pin 7 to rotate as the centre of rotation, and pawl pin 7 both ends are through clearance fit dress on the derailleur box, realize supporting parking pawl 5.
The pawl return spring 8 is connected with the parking pawl 5, the pawl return spring 8 is a torsion spring and is sleeved on the parking pawl 5, one end of the pawl return spring 8 is connected with a spring mounting hole 52 formed in the parking pawl 5, the other end of the pawl return spring is matched with the box body, torsion towards the parking cam 34 is generated on the parking pawl 5, and therefore the parking pawl 5 is kept matched with the parking cam 34. Preferably, a detent groove 53 is provided on the parking pawl 5, and the parking cam 34 is engaged with the detent groove 53.
The parking ratchet wheel 6 is provided with ratchet grooves 61 and ratchet teeth 62, the ratchet grooves 61 and the pawl teeth 51 are matched and locked, and the parking ratchet wheel 6 is installed on a fixed connecting shaft at the output end of the transmission through spline connection, so that the vehicle can be firmly borne.
When the gear is in a P gear, the gear shifting motor 1 drives the gear shifting drum 2 to rotate, the gear shifting drum 2 rotates for 1/4 of a circle, the P driving groove 23 of the guide profile groove 22 extrudes the shifting block 312, the shifting block 312 reaches the lower straight line section from the upper straight line section of the P driving groove 23 to drive the parking push rod assembly 3 to axially move, and the parking cam 34 extrudes the parking pawl 5 to rotate. When the tooth crest of the parking pawl 5 is opposite to the tooth crest of the parking ratchet 6, which is a false P gear, in the process of extruding the shifting block 312 by the groove wall of the parking driving groove 23, the push rod spring 33 in the parking push rod assembly 3 is compressed to store energy, when the parking ratchet 6 rotates for an angle, the ratchet teeth 62 of the parking ratchet 6 are staggered from the pawl teeth 51 on the parking pawl 5, and the push rod spring 33 releases energy to push the parking cam 34 to continuously extrude the pawl teeth 51 of the parking pawl 5 into the ratchet groove 61 of the parking ratchet 6, so that parking is realized.
When the gear shift is returned to the P gear, the gear shift motor 1 drives the gear shift drum 2 to continue rotating, the gear shift drum 2 continues rotating for 1/4 of a circle, the P-returning driving groove 24 of the guide profile groove 22 extrudes the shifting head 312, the shifting head 312 reaches the upper straight line section from the lower straight line section of the P-returning driving groove 24 to drive the parking push rod assembly 3 to reversely axially move, the parking pawl 5 rotates under the action of ejection force and torsional spring force, and the pawl teeth 51 of the parking pawl 5 are separated from the pawl grooves 61 of the parking ratchet wheel 6, so that the gear shift is realized.
Claims (5)
1. Derailleur parking actuating mechanism, including gear shifting motor (1), parking push rod assembly (3), parking deflector (4), parking pawl (5), parking ratchet (6), pawl round pin (7), pawl return spring (8), the one end of parking push rod assembly (3) cooperates with parking deflector (4) and parking pawl (5) respectively, parking pawl (5) cooperate with parking ratchet (6), parking pawl (5) and pawl round pin (7) pivotal connection, pawl return spring (8) are connected with parking pawl (5), a serial communication port, still include shift drum (2), shift drum (2) are connected with gear shifting motor (1), be equipped with on shift drum (2) global with parking push rod assembly (3) other end sliding fit's direction profile groove (22), direction profile groove (22) are the cam groove, direction profile groove (22) include:
the parking push rod assembly (3) is driven to axially move when the gear shifting drum (2) rotates so as to realize a parking P driving groove section (23) of a parking lock;
and a P-withdrawing driving groove section (24) which enables the parking push rod assembly (3) to axially move to realize parking release when the gear shifting drum (2) rotates.
2. Transmission parking actuator according to claim 1, wherein the guiding profile slot (22) further comprises a self-locking slot section (25), the shift drum (2) limiting the axial movement of the parking tappet assembly (3) when the parking tappet assembly (3) is mated with the self-locking slot section (25).
3. The transmission parking actuating mechanism according to claim 1, wherein the parking push rod assembly (3) comprises a push rod connecting rod assembly (31), a parking push rod (32), a push rod spring (33) and a parking cam (34), the push rod connecting rod assembly (31) comprises a shifting fork frame (311) and a shifting head (312) matched with the guide profile groove (22) of the gear shift drum (2), the push rod connecting rod assembly (31) is fixedly connected with the parking push rod (32), the push rod spring (33) is sleeved on the parking push rod (32), one end of the push rod spring (33) abuts against the parking push rod (32) or the shifting fork frame (311), one end of the push rod spring (33) abuts against the parking cam (34), and the parking cam (34) is provided with a locking surface matched with the parking guide plate (4) and the parking pawl (5).
4. A transmission parking actuator according to claim 3, wherein said driver (312) is mounted on opposite side walls of said fork carriage (311).
5. The transmission parking actuator according to claim 1, wherein the parking guide plate (4) is provided with a bolt mounting hole (41) for mounting with the transmission case, a case positioning surface (42) and a locking surface (43) which are engaged with the transmission case, and the locking surface (43) is engaged with the parking push rod assembly (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210870468.0A CN115264056A (en) | 2022-07-22 | 2022-07-22 | Transmission parking actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210870468.0A CN115264056A (en) | 2022-07-22 | 2022-07-22 | Transmission parking actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115264056A true CN115264056A (en) | 2022-11-01 |
Family
ID=83769671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210870468.0A Pending CN115264056A (en) | 2022-07-22 | 2022-07-22 | Transmission parking actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115264056A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204664397U (en) * | 2015-05-15 | 2015-09-23 | 江苏林海动力机械集团公司 | Engine mission parking lock device |
| CN106402324A (en) * | 2016-12-07 | 2017-02-15 | 天津天海同步集团有限公司 | Electromagnetic clutch type electric automobile transmission |
| CN106481814A (en) * | 2015-09-02 | 2017-03-08 | 广州汽车集团股份有限公司 | Electric automobile gear device and its halting mechanism |
| CN107477178A (en) * | 2017-07-27 | 2017-12-15 | 北京新能源汽车股份有限公司 | Parking mechanism |
| CN107763163A (en) * | 2017-09-21 | 2018-03-06 | 宁波上中下自动变速器有限公司 | A kind of transmission system and there is its vehicle |
| CN211117538U (en) * | 2019-11-25 | 2020-07-28 | 蜂巢传动科技河北有限公司 | Gear-shifting parking system for vehicle and vehicle with gear-shifting parking system |
| CN211852690U (en) * | 2020-01-03 | 2020-11-03 | 吉利汽车研究院（宁波）有限公司 | Two keep off reduction gears |
-
2022
- 2022-07-22 CN CN202210870468.0A patent/CN115264056A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204664397U (en) * | 2015-05-15 | 2015-09-23 | 江苏林海动力机械集团公司 | Engine mission parking lock device |
| CN106481814A (en) * | 2015-09-02 | 2017-03-08 | 广州汽车集团股份有限公司 | Electric automobile gear device and its halting mechanism |
| CN106402324A (en) * | 2016-12-07 | 2017-02-15 | 天津天海同步集团有限公司 | Electromagnetic clutch type electric automobile transmission |
| CN107477178A (en) * | 2017-07-27 | 2017-12-15 | 北京新能源汽车股份有限公司 | Parking mechanism |
| CN107763163A (en) * | 2017-09-21 | 2018-03-06 | 宁波上中下自动变速器有限公司 | A kind of transmission system and there is its vehicle |
| CN211117538U (en) * | 2019-11-25 | 2020-07-28 | 蜂巢传动科技河北有限公司 | Gear-shifting parking system for vehicle and vehicle with gear-shifting parking system |
| CN211852690U (en) * | 2020-01-03 | 2020-11-03 | 吉利汽车研究院（宁波）有限公司 | Two keep off reduction gears |
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