CN209990893U - Electric parking mechanism of automatic transmission - Google Patents
Electric parking mechanism of automatic transmission Download PDFInfo
- Publication number
- CN209990893U CN209990893U CN201920674804.8U CN201920674804U CN209990893U CN 209990893 U CN209990893 U CN 209990893U CN 201920674804 U CN201920674804 U CN 201920674804U CN 209990893 U CN209990893 U CN 209990893U
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- Prior art keywords
- parking
- gear
- cam
- push rod
- rod assembly
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- 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.)
- Withdrawn - After Issue
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 210000000078 claw Anatomy 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 210000001847 jaw Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
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- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model discloses an automatic transmission electric parking mechanism, which comprises a parking motor, a gear reduction mechanism, a cam mechanism, a linear motion mechanism, a parking pawl, a return spring and a parking gear, wherein an output shaft of the parking motor is connected with the cam mechanism through the gear reduction mechanism, and the cam mechanism consists of a cam eccentrically arranged on the lower end surface of an output gear, a bearing contacted with the contour of the cam and a shaft lever in interference fit with the bearing; the linear motion mechanism comprises a push rod assembly and a wedge block, the push rod assembly is vertically connected with the shaft rod, the wedge block is arranged on the push rod assembly, the wedge block is in contact with the front end of the parking pawl, a claw portion capable of being meshed with the parking gear is convexly arranged on the surface of the parking pawl, one end of the return spring is fixedly connected to the parking pawl, and the other end of the return spring is fixedly connected to the transmission box body. The utility model discloses a cam mechanism is straight reciprocating motion for the push rod assembly with the power transmission that the parking motor produced, is favorable to the reduce system cost, improves drive efficiency.
Description
Technical Field
The utility model relates to a parking mechanism, more specifically say, especially relate to an automatic transmission electric parking mechanism.
Background
The parking mechanism is a safety device in an automatic transmission, is a secondary protection device for the safety of vehicles, and has the functions of enabling a vehicle sliding in a low-speed neutral gear to be stationary at a fixed position and enabling the vehicle to be stably stopped on a slope. The existing automatic transmission parking mechanism generally adopts hydraulic drive to park, needs a hydraulic pump, a control solenoid valve, hydraulic oil, a related valve body, a pipeline and other parts, has large volume, low energy consumption efficiency and high system cost, and is not suitable for hybrid power and pure electric vehicles.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to above-mentioned prior art not enough, provide an automatic transmission electric parking mechanism that occupation space is few, compact structure, reduce system cost improves drive efficiency.
In order to achieve the above object, the utility model adopts the following technical scheme: an electric parking mechanism of an automatic transmission comprises a parking motor, a gear reduction mechanism, a cam mechanism, a linear motion mechanism, a parking pawl, a return spring and a parking gear, wherein the parking motor is fixedly arranged on a transmission box body, and an output shaft of the parking motor is connected with the cam mechanism through the gear reduction mechanism; the gear reduction mechanism consists of an input gear, a middle duplicate gear and an output gear, wherein the input gear is arranged on an output shaft of the parking motor and is meshed with a large gear in the duplicate gear, and a small gear in the duplicate gear is meshed with the output gear; the cam mechanism consists of a cam eccentrically arranged on the lower end surface of the output gear, a bearing which is in contact with the profile of the cam and is driven by the cam to do reciprocating linear motion, and a shaft lever in interference fit with the bearing; the linear motion mechanism comprises a push rod assembly vertically connected with the shaft rod, a push plate, a first compression spring and a spring seat are sequentially arranged at the right end of the push rod assembly from inside to outside, the push plate is also contacted with a bearing in the cam mechanism, a clamping ring, a second compression spring and a wedge block are sequentially arranged at the left end of the push rod assembly from inside to outside, and the wedge block is contacted with the front end of the parking pawl; the rear end of the parking pawl is connected with a rotating shaft, a claw part which can be meshed with a parking gear is convexly arranged on the surface of the parking pawl, one end of the return spring is fixedly connected to the parking pawl, and the other end of the return spring is fixedly connected to a transmission box body.
The utility model discloses the during operation, the power that the parking motor produced transmits for cam mechanism through gear reduction mechanism, drives the push rod assembly by cam mechanism and makes straight reciprocating motion, and when the push rod assembly moved to the left, the wedge moved to the left thereupon with parking pawl jack-up, made the claw of parking pawl insert the parking gear tooth inslot and pin the parking gear to reach whole car parking mesh.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the cam and output gear assembly of fig. 1.
In the figure: 1-a parking motor; 2-a gear reduction mechanism; 21-input gear; 22-duplicate gear; 23-an output gear; 3-a cam mechanism; 31-a cam; 32-a bearing; 33-shaft rod; 34-briquetting; 4-a linear motion mechanism; 41-a push rod assembly; 42-a push plate; 43-a first compression spring; 44-spring seats; 45-snap ring; 46-a second compression spring; 47-wedge block; 5-a parking pawl; 51-a rotating shaft; 52-a jaw portion; 6-a return spring; 7-parking gear.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.
As shown in fig. 1, the utility model provides a pair of automatic transmission electric parking mechanism, including parking motor 1, gear reduction mechanism 2, cam mechanism 3, linear motion mechanism 4, parking pawl 5, return spring 6 and parking gear 7.
The parking motor 1 is fixedly arranged on the transmission box body, and an output shaft of the parking motor 1 is connected with the cam mechanism 3 through the gear reduction mechanism 2; the gear reduction mechanism 2 is composed of an input gear 21, a middle duplicate gear 22 and an output gear 23, wherein the input gear 21 is mounted on an output shaft of the parking motor 1 and meshed with a large gear in the duplicate gear 22, and a small gear in the duplicate gear 22 is meshed with the output gear 23.
The cam mechanism 3 is composed of a cam 31 eccentrically arranged on the lower end face of the output gear 23, a bearing 32 in contact with the contour of the cam 31 and driven by the cam 31 to do reciprocating linear motion, and a shaft rod 33 in interference fit with the bearing 32, two pressing blocks 34 (shown in fig. 2) are further arranged on the lower end face of the output gear 23 along the inner circle of the gear, the height of each pressing block 34 is lower than that of the cam 31, the pressing blocks 34 can press on the bearing 32 along with the rotation of the output gear 23 to prevent the bearing 32 from being displaced in the motion process, and the bearing 32 is adopted as a driven part of the cam mechanism 3 to help to reduce the friction loss between the bearing and the cam 31.
The linear motion mechanism 4 comprises a push rod assembly 41 vertically connected with the shaft rod 33, a push plate 42, a first compression spring 43 and a spring seat 44 are sequentially installed at the right end of the push rod assembly 41 from inside to outside, wherein the push plate 42 is also contacted with the bearing 32 in the cam mechanism 3, a snap ring 45, a second compression spring 46 and a wedge block 47 are sequentially installed at the left end of the push rod assembly 42 from inside to outside, and the wedge block 47 is contacted with the front end of the parking pawl 5; the rear end of the parking pawl 5 is connected with a rotating shaft 51, the parking pawl 5 rotates up and down by taking the rotating shaft 51 as a center when working, a claw part 52 which can be meshed with the parking gear 7 is convexly arranged on the surface of the parking pawl 5, one end of a return spring 6 is fixedly connected to the parking pawl 5, the other end of the return spring is fixedly connected to a transmission box body, and the return spring 6 can enable the parking pawl 5 to return quickly and enable the claw part 52 to be withdrawn from the tooth socket of the parking gear 7.
In this embodiment, the push rod assembly 41 is formed by connecting a straight short rod and an elbow-equipped short rod through a joint, the straight short rod is vertically connected with the shaft rod 33 in the cam mechanism 3, the push plate 42, the first compression spring 43 and the spring seat 44 are sequentially mounted on the straight short rod, and the snap ring 45, the second compression spring 46 and the wedge-shaped block 47 are sequentially mounted on the elbow-equipped short rod.
The utility model discloses a parking principle is: the power generated by the parking motor 1 is transmitted to the cam mechanism 3 through the gear reduction mechanism 2, the cam mechanism 3 drives the push rod assembly 41 to do linear reciprocating motion, when the push rod assembly 41 moves leftwards, the wedge block 46 moves leftwards along with the push rod assembly to jack the parking pawl 5, the claw part 52 of the parking pawl 5 is inserted into the tooth groove of the parking gear 7 to lock the parking gear 7, and therefore the purpose of parking the whole vehicle is achieved.
The utility model discloses compact structure, the power transmission that produces parking motor 1 through cam mechanism 3 is for push rod assembly 41 to be linear reciprocating motion, makes motor system work all the time on the high-efficient point, is favorable to the reduce system cost, improves drive efficiency, improves parking mechanism's fail safe nature.
Claims (3)
1. The utility model provides an automatic derailleur electric parking mechanism, includes parking motor, gear reduction mechanism, cam mechanism, linear motion mechanism, parking pawl, return spring and parking gear, its characterized in that:
the parking motor is fixedly arranged on the transmission box body, and an output shaft of the parking motor is connected with the cam mechanism through the gear reduction mechanism;
the gear reduction mechanism consists of an input gear, a middle duplicate gear and an output gear, wherein the input gear is arranged on an output shaft of the parking motor and is meshed with a large gear in the duplicate gear, and a small gear in the duplicate gear is meshed with the output gear;
the cam mechanism consists of a cam eccentrically arranged on the lower end surface of the output gear, a bearing which is in contact with the profile of the cam and is driven by the cam to do reciprocating linear motion, and a shaft lever in interference fit with the bearing;
the linear motion mechanism comprises a push rod assembly vertically connected with the shaft rod, a push plate, a first compression spring and a spring seat are sequentially arranged at the right end of the push rod assembly from inside to outside, the push plate is also contacted with a bearing in the cam mechanism, a clamping ring, a second compression spring and a wedge block are sequentially arranged at the left end of the push rod assembly from inside to outside, and the wedge block is contacted with the front end of the parking pawl; the rear end of the parking pawl is connected with a rotating shaft, a claw part which can be meshed with a parking gear is convexly arranged on the surface of the parking pawl, one end of the return spring is fixedly connected to the parking pawl, and the other end of the return spring is fixedly connected to a transmission box body.
2. The automatic transmission electric parking mechanism according to claim 1, characterized in that: two pressing blocks are further arranged on the upper edge of the lower end face of the output gear along the inner circle of the gear, and the height of each pressing block is lower than that of the cam.
3. The automatic transmission electric parking mechanism according to claim 1 or 2, characterized in that: the push rod assembly is formed by connecting a linear short rod and a short rod with an elbow through a joint, the linear short rod is vertically connected with a shaft lever in the cam mechanism, the push plate, the first compression spring and the spring seat are sequentially arranged on the linear short rod, and the snap ring, the second compression spring and the wedge block are sequentially arranged on the short rod with the elbow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920674804.8U CN209990893U (en) | 2019-05-13 | 2019-05-13 | Electric parking mechanism of automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920674804.8U CN209990893U (en) | 2019-05-13 | 2019-05-13 | Electric parking mechanism of automatic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209990893U true CN209990893U (en) | 2020-01-24 |
Family
ID=69293909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920674804.8U Withdrawn - After Issue CN209990893U (en) | 2019-05-13 | 2019-05-13 | Electric parking mechanism of automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209990893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081169A (en) * | 2019-05-13 | 2019-08-02 | 艾菲发动机零件（武汉）有限公司 | Automatic transmission electric parking mechanism |
-
2019
- 2019-05-13 CN CN201920674804.8U patent/CN209990893U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081169A (en) * | 2019-05-13 | 2019-08-02 | 艾菲发动机零件（武汉）有限公司 | Automatic transmission electric parking mechanism |
| CN110081169B (en) * | 2019-05-13 | 2024-06-21 | 艾菲汽车零部件(武汉)有限公司 | Electric parking mechanism of automatic transmission |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430056 No. 60, Quanli South Road, Wuhan Economic and Technological Development Zone, Hubei Province Patentee after: Aifei Automotive Parts (Wuhan) Co.,Ltd. Address before: 430056 No. 60, Quanli South Road, Wuhan Economic and Technological Development Zone, Hubei Province Patentee before: ELECTRICFIL ENGINE COMPONENTS (WUHAN) CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200124 Effective date of abandoning: 20240621 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20200124 Effective date of abandoning: 20240621 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |