CN211525515U - Parking locking mechanism of automatic transmission - Google Patents
Parking locking mechanism of automatic transmission Download PDFInfo
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- CN211525515U CN211525515U CN201921941227.0U CN201921941227U CN211525515U CN 211525515 U CN211525515 U CN 211525515U CN 201921941227 U CN201921941227 U CN 201921941227U CN 211525515 U CN211525515 U CN 211525515U
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Abstract
The utility model discloses an automatic transmission parking locking mechanism, including the pawl round pin axle that sets up in the gearbox box, the pivot is equipped with parking pawl and sector gear that are located its one side on the pawl round pin axle, the parking pawl is kept away from the one end of pawl round pin axle is equipped with the integrative execution piece of parking pawl, the execution piece can be driven its parking ratchet wheel of pressing the setting on the jackshaft by the actuating assembly that sets firmly on sector gear, still be equipped with the reset assembly that resets the parking pawl on the pawl round pin axle; and a motor driving assembly for driving the sector gear to rotate is arranged on the other side of the pawl pin shaft. The beneficial effects of the utility model are mainly embodied in that: the structure is compact, the design is novel, and the occupied space is small; compared with a mechanical P-gear mechanism, the electric drive type P-gear mechanism is more compact in layout, simpler in part structure and smaller in occupied space. The parking motor can be intelligently controlled, and parking and unlocking can be carried out at any time according to the intention of a driver.
Description
Technical Field
The utility model relates to an automotive transmission technical field particularly, especially relates to an automatic transmission parking locking mechanism.
Background
In order to realize the parking function of the electric vehicle when the motor does not work, an electronic parking mechanism is usually installed in a reducer of the electric vehicle, so that the reliable locking function of the electric vehicle on a flat road and a sloping road is realized. The electronic parking mechanism is composed of a parking brake and a mechanical parking mechanism, the parking brake is used as an actuator to drive the mechanical parking mechanism to act, and the functions of combination and separation of the P gear are guaranteed. When the gear P is engaged, the parking actuator drives the parking cam assembly to rotate, the parking cam assembly pushes the parking pawl assembly to push the parking pawl assembly into a tooth groove of the parking gear, and the parking state of the gear P is realized; when the P gear is separated, the parking actuator drives the parking cam assembly to rotate in the opposite direction, the parking pawl assembly is guaranteed to be separated from a tooth groove of the parking gear, and the contact parking function is achieved. The electric vehicle speed reducer has compact space and limited torque capacity of the parking actuator, so that the mechanical parking mechanism is required to have compact structural layout, small P-gear picking torque and limited by the cost of the speed reducer, and the parking mechanism is required to have simple structure, reduce the number of parts as much as possible and be convenient for batch production.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the not enough of prior art existence, provide an automatic transmission parking locking mechanism.
The purpose of the utility model is realized through the following technical scheme:
a parking locking mechanism of an automatic transmission comprises a pawl pin shaft arranged in a gearbox box body, wherein a parking pawl and a sector gear which are positioned on one side of the pawl pin shaft are arranged on the pawl pin shaft in a pivot mode, an execution block which is integrated with the parking pawl is arranged at one end, far away from the pawl pin shaft, of the parking pawl, the execution block can be driven by an actuating assembly fixedly arranged on the sector gear to press a parking ratchet wheel arranged on a middle shaft, and a reset assembly for resetting the parking pawl is further arranged on the pawl pin shaft; and a motor driving assembly for driving the sector gear to rotate is arranged on the other side of the pawl pin shaft.
Preferably, the contact point of the actuating element with the parking pawl and the contact point of the parking pawl with the parking ratchet are located on both sides of the furthest end of the parking pawl away from the parking pawl and the pawl pin pivot point.
Preferably, the actuating assembly comprises an L-shaped driving rod fixedly arranged on the sector gear, a limiting lug and a fixed pier head are fixedly arranged on a driving end of the driving rod, a driving block and an actuating spring are further arranged between the limiting lug and the fixed pier head and sleeved on the driving end, one end of the actuating spring is tightly attached to the limiting lug, and the other end of the actuating spring is tightly attached to the driving block; the driving surface and the locking surface of the driving block can be tightly attached to the parking pawl.
Preferably, a guide block is fixedly arranged on the gearbox body through a pin, and an arc-shaped guide groove or a square-shaped guide groove is formed in the guide block and used for limiting and guiding the upper part of the driving block.
Preferably, the reset assembly comprises a reset spring sleeved on the pawl pin shaft, one end of the reset spring is fixedly connected with the parking pawl, and the other end of the reset spring is fixedly arranged on the gearbox body.
Preferably, the motor driving assembly comprises a parking motor and a reduction gear pin shaft which are fixedly arranged on the gearbox body, a reduction gear capable of rotating is sleeved on the reduction gear pin shaft, a large gear of the reduction gear is meshed with a connecting gear fixedly arranged on a motor shaft of the parking motor, and a small gear of the reduction gear is meshed with the sector gear.
Preferably, a weight reduction groove is formed in the large gear of the reduction gear, and a flower-shaped hole is formed in the reduction gear.
Preferably, the sector gear comprises a first positioning groove and a second positioning groove which are arranged on the sector gear, and an arc-shaped surface is further arranged between the first positioning groove and the second positioning groove; the gearbox body is further fixedly provided with a positioning piece, and the positioning piece can roll on the arc-shaped surface and is clamped in the first positioning groove and the second positioning groove.
Preferably, a long arm pressing piece is fixedly arranged on the gearbox body, and a stepped hole is formed in the pressing piece and used for pressing and limiting the pawl pin shaft and the reduction gear pin shaft.
Preferably, the sector gear is further provided with a positioning pin hole of the sensor, and the sensor is fixed in the threaded hole of the sector gear through a fixing bolt; preferably, the sector gear further comprises a convex surface and a limiting surface, the convex surface provides limiting for the non-P gear, and the limiting surface provides limiting for the P gear.
The beneficial effects of the utility model are mainly embodied in that:
1. the structure is compact, the design is novel, and the occupied space is small; compared with a mechanical P-gear mechanism, the electric-drive P-gear mechanism is more compact in layout, simpler in part structure and smaller in occupied space. The parking motor can be intelligently controlled, and parking and unlocking can be carried out at any time according to the intention of a driver;
2. security policy protection and intelligent control; compared with a mechanical P-gear mechanism, the electrically-driven P-gear mechanism carries out safety strategy protection, error operation is not needed to be worried about, and the electric-driven P-gear mechanism can be controlled to be higher than a certain vehicle speed and cannot park;
3. the utility is better, and the function is more reliable; compared with a hydraulic P-gear mechanism, the power source of the electrically-driven P-gear mechanism is an independent weak current system, so that the power source of the electrically-driven P-gear mechanism is better in functionality than a strong current system, is not easy to lose electricity, is not influenced by a hydraulic system, has no congenital defect of hydraulic parking, can perform P parking and P releasing operation according to the intention of a driver at any time, and is more reliable in function;
4. a position sensor monitors in real time during the P-gear shifting process, and closed-loop accurate control is performed;
5. the weight of the reduction gear is greatly reduced due to the arrangement of the weight reduction grooves, the cost of an enterprise is reduced, and the weight of the gearbox is also reduced;
6. the arrangement of the flower-shaped holes on the reduction gear enables the reduction gear to be matched with the pin shaft of the reduction gear, meanwhile, sufficient lubrication can be provided, abrasion is reduced, and the service life is prolonged.
Drawings
The technical scheme of the utility model is further explained by combining the attached drawings as follows:
FIG. 1: the structure of the utility model is shown schematically;
FIG. 2: the structure of the speed reducing gear in the utility model is shown schematically;
FIG. 3: the structure of the middle sector gear of the utility model is shown schematically;
FIG. 4: the utility model discloses in actuate the structural schematic diagram of subassembly.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1-4, the utility model discloses an automatic derailleur parking locking mechanism, including setting up pawl round pin axle 1 in the gearbox box, pawl round pin axle 1 goes up the pivot and is equipped with parking pawl 2 and the sector gear 3 that is located its one side, parking pawl 2 keeps away from pawl round pin axle 1's one end be equipped with parking pawl 2 integrative execution piece 21, in the aforesaid execution piece 21 can be by setting firmly it presses the parking ratchet 5 that sets up on the jackshaft to actuate subassembly 4 drive on the sector gear 3, pawl round pin axle 1 is last still be equipped with reset assembly 6 that parking pawl 2 resets. Compared with the design of Chinese CN 108317247A, the contact point of the actuating component 4 and the parking pawl 2 and the contact point of the parking pawl 2 and the parking ratchet wheel 5 are both positioned at two sides of the farthest end of the parking pawl 2, which is far away from the parking pawl 2 and the pivot point of the pawl pin shaft 1. Because the moment is equal to the product of the force and the moment arm, the moment required to be pressed is specified, and the moment arm is the longest, so that the pressing force can be reduced, and therefore, the parking pawl 2 and the driving rod 41 which are more slender can be adopted, the cost is reduced, the structure is more compact, and the occupied space is reduced.
The structure of actuating the subassembly 4 and the subassembly 6 that resets is specifically explained below, the subassembly 4 that actuates is including setting firmly L shape actuating lever 41 on the sector gear 3, set firmly a spacing mound ear 43 and fixed pier nose 44 on the drive end 42 of actuating lever 41, still be equipped with the cover between spacing mound ear 43 and the fixed pier nose 44 and establish drive block 45 and actuating spring 46 on the drive end 42, actuating spring 46's one end with spacing mound ear 43 hugs closely, the other end with drive block 45 hugs closely. The drive surface 451 and the lock surface 452 of the drive block 45 can be brought into close contact with the parking pawl 2. Further, a guide block 48 is fixedly arranged on the gearbox body through a pin 47, and an arc-shaped guide groove or a square-shaped guide groove is formed in the guide block 48 and used for limiting and guiding the upper portion of the driving block 45.
In the above, the reset assembly 6 includes a reset spring 61 sleeved on the pawl pin shaft 1, one end of the reset spring 61 is fixedly connected with the parking pawl 2, and the other end is fixedly arranged on the gearbox body.
In this embodiment, a motor driving assembly 7 for driving the sector gear 3 to rotate is disposed on the other side of the pawl pin 1. The motor driving assembly 7 comprises a parking motor 71 and a reduction gear pin shaft 72 which are fixedly arranged on the gearbox body, a reduction gear 73 capable of rotating is sleeved on the reduction gear pin shaft 72, a large gear 74 of the reduction gear 73 is meshed with a connecting gear fixedly arranged on a motor shaft of the parking motor 71, and a small gear 75 of the reduction gear 73 is meshed with the sector gear 3.
In the embodiment, the structure is compact, the design is novel, and the occupied space is small; compared with a mechanical P-gear mechanism, the electric-drive P-gear mechanism is more compact in layout, simpler in part structure and smaller in occupied space. The parking motor can be intelligently controlled, and parking and unlocking can be carried out at any time according to the intention of a driver; security policy protection and intelligent control; compared with a mechanical P-gear mechanism, the electrically-driven P-gear mechanism carries out safety strategy protection, error operation is not needed, and the electric-driven P-gear mechanism can be controlled to be larger than a certain vehicle speed and cannot park. The utility is better, and the function is more reliable; relative fluid pressure type P keeps off mechanism, and electricity drives formula P and keeps off mechanism power supply and be its functional better for independent weak current system relative forceful electric power system, is difficult for insufficient electricity, does not receive hydraulic system's influence, does not have the congenital defect of fluid pressure type parking, can stay P according to driver's intention at any time and solve the P operation, and its function is more reliable.
Furthermore, a weight reduction groove 741 is formed in the large gear 74 of the reduction gear 73, and the weight of the reduction gear is greatly reduced due to the weight reduction groove, so that the cost of an enterprise is reduced, and the weight of the gearbox is also reduced. The reduction gear 73 is provided with a flower-shaped hole 751, and the flower-shaped hole is arranged so that the reduction gear can provide sufficient lubrication, reduce abrasion and prolong the service life while being matched with a pin shaft of the reduction gear.
In this embodiment, the sector gear 3 includes a first positioning groove 31 and a second positioning groove 32 disposed thereon, and an arc profile 33 is further disposed between the first positioning groove 31 and the second positioning groove 32. The gearbox body is further fixedly provided with a positioning piece 34, and the positioning piece 34 can roll on the arc-shaped surface 33 and is clamped in the first positioning groove 31 and the second positioning groove 32. The sector gear 3 is also provided with a positioning pin hole 35 of a sensor, and a fixing bolt fixes the sensor 37 in a threaded hole 36 on the sector gear 3. The sector gear 3 further comprises a convex surface 38 and a limiting surface 39, the convex surface 38 provides limiting for the non-P gear, and the limiting surface 39 provides limiting for the P gear.
Preferably, a long arm pressing piece 8 is fixedly arranged on the gearbox body, and a stepped hole is formed in the pressing piece 8 and used for pressing and limiting the pawl pin shaft 1 and the reduction gear pin shaft 72.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. Automatic derailleur parking locking mechanism, including setting up pawl round pin axle (1) in the gearbox box, its characterized in that: a parking pawl (2) and a sector gear (3) which are positioned on one side of the pawl pin shaft (1) are arranged on the pawl pin shaft in a pivot mode, an execution block (21) which is integrated with the parking pawl (2) is arranged at one end, away from the pawl pin shaft (1), of the parking pawl (2), the execution block (21) can be driven by an actuating component (4) which is fixedly arranged on the sector gear (3) to press a parking ratchet wheel (5) which is arranged on an intermediate shaft, and a reset component (6) which resets the parking pawl (2) is further arranged on the pawl pin shaft (1); and a motor driving component (7) for driving the sector gear (3) to rotate is arranged on the other side of the pawl pin shaft (1).
2. The automatic transmission parking lock mechanism according to claim 1, characterized in that: the contact point of the actuating component (4) and the parking pawl (2) and the contact point of the parking pawl (2) and the parking ratchet wheel (5) are located on two sides, far away from the parking pawl (2) and the farthest end of a pivot point of the pawl pin shaft (1), of the parking pawl (2).
3. The automatic transmission parking lock mechanism according to claim 1 or 2, characterized in that: the actuating assembly (4) comprises an L-shaped driving rod (41) fixedly arranged on the sector gear (3), a limiting lug (43) and a fixed pier head (44) are fixedly arranged on the driving end (42) of the driving rod (41), a driving block (45) and an actuating spring (46) which are sleeved on the driving end (42) are further arranged between the limiting lug (43) and the fixed pier head (44), one end of the actuating spring (46) is tightly attached to the limiting lug (43), and the other end of the actuating spring is tightly attached to the driving block (45); the drive surface (451) and the lock surface (452) of the drive block (45) can be brought into close contact with the parking pawl (2).
4. The automatic transmission parking lock mechanism according to claim 1 or 2, characterized in that: the gearbox body is further fixedly provided with a guide block (48) through a pin (47), and the guide block (48) is provided with an arc-shaped guide groove or a square-shaped guide groove for limiting and guiding the upper part of the driving block (45).
5. The automatic transmission parking lock mechanism according to claim 1, characterized in that: the reset assembly (6) comprises a reset spring (61) sleeved on the pawl pin shaft (1), one end of the reset spring (61) is fixedly connected with the parking pawl (2), and the other end of the reset spring is fixedly arranged on the gearbox body.
6. The automatic transmission parking lock mechanism according to claim 1, characterized in that: the motor driving assembly (7) comprises a parking motor (71) and a reduction gear pin shaft (72) which are fixedly arranged on the gearbox body, a reduction gear (73) capable of rotating is sleeved on the reduction gear pin shaft (72), a large gear (74) of the reduction gear (73) is meshed with a connecting gear fixedly arranged on a motor shaft of the parking motor (71), and a small gear (75) of the reduction gear (73) is meshed with the sector gear (3).
7. The automatic transmission parking lock mechanism according to claim 6, characterized in that: a weight reduction groove (741) is formed in the large gear (74) of the reduction gear (73), and a flower-shaped hole (751) is formed in the reduction gear (73).
8. The automatic transmission parking lock mechanism according to claim 1, characterized in that: the sector gear (3) comprises a first positioning groove (31) and a second positioning groove (32) which are arranged on the sector gear, and an arc-shaped surface (33) is arranged between the first positioning groove (31) and the second positioning groove (32); the gearbox body is further fixedly provided with a positioning piece (34), the positioning piece (34) can roll on the arc-shaped surface (33) and is clamped in the first positioning groove (31) and the second positioning groove (32).
9. The automatic transmission parking lock mechanism according to claim 6, characterized in that: the gearbox body is fixedly provided with a long arm pressing piece (8), and the pressing piece (8) is provided with a stepped hole for pressing and limiting the pawl pin shaft (1) and the reduction gear pin shaft (72).
10. The automatic transmission parking lock mechanism according to claim 1, characterized in that: a positioning pin hole (35) of the sensor is further formed in the sector gear (3), and the sensor (37) is fixed in a threaded hole (36) in the sector gear (3) through a fixing bolt; sector gear (3) still include bellying (38) and spacing face (39), bellying (38) keep off for non-P and provide spacingly, spacing face (39) keep off for P and provide spacingly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921941227.0U CN211525515U (en) | 2019-11-12 | 2019-11-12 | Parking locking mechanism of automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921941227.0U CN211525515U (en) | 2019-11-12 | 2019-11-12 | Parking locking mechanism of automatic transmission |
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| Publication Number | Publication Date |
|---|---|
| CN211525515U true CN211525515U (en) | 2020-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921941227.0U Active CN211525515U (en) | 2019-11-12 | 2019-11-12 | Parking locking mechanism of automatic transmission |
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| CN (1) | CN211525515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873185A (en) * | 2019-11-12 | 2020-03-10 | 坤泰车辆系统（常州）有限公司 | Parking locking mechanism of automatic transmission |
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2019
- 2019-11-12 CN CN201921941227.0U patent/CN211525515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873185A (en) * | 2019-11-12 | 2020-03-10 | 坤泰车辆系统（常州）有限公司 | Parking locking mechanism of automatic transmission |
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Address after: 280 Fumin Road, Wujin District, Changzhou City, Jiangsu Province 213000 Patentee after: Kuntai vehicle system (Changzhou) Co.,Ltd. Address before: 280 Fumin Road, Wujin District, Changzhou City, Jiangsu Province 213000 Patentee before: KUNTYE VEHICLE SYSTEM (CHANGZHOU) Co.,Ltd. |