CN211737997U

CN211737997U - P keeps off recognition device and vehicle gearbox and vehicle

Info

Publication number: CN211737997U
Application number: CN202020018743.2U
Authority: CN
Inventors: 蔡昀宁; 郁李巍; 李佳奕; 田雪; 谢阳
Original assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Current assignee: SAIC General Motors Corp Ltd; Pan Asia Technical Automotive Center Co Ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-10-23
Anticipated expiration: 2030-01-06

Abstract

The utility model provides a P keeps off recognition device and vehicle gearbox and vehicle. The P-gear recognition device is provided with a gear sensor, a gear shifting shaft and a gear shifting toothed plate, the gear sensor is fixed on a gearbox shell, the gear shifting shaft is connected with the gear shifting toothed plate, a rotor of the gear sensor is fixedly connected with the gear shifting shaft, and the gear sensor recognizes the P-gear position by detecting the rotation angle of the gear shifting shaft. The P-gear recognition device is simple in structure, simple in installation layout and capable of well meeting the recognition function of the P-gear position.

Description

P keeps off recognition device and vehicle gearbox and vehicle

Technical Field

The utility model relates to a P keeps off recognition device and have such P to keep off recognition device's vehicle transmission, especially vehicle automatic transmission. Furthermore, the utility model discloses still relate to a vehicle with such P keeps off recognition device.

Background

With the popularization of automatic transmissions, the parking mechanism which is indispensable to the automatic transmission is also widely applied. For the parking mechanism, a mechanical structure must be adopted due to the requirement of functional safety, and it is necessary to recognize whether the mechanical mechanism is in the P-range (parking range) position. The traditional P-gear sensor mostly adopts a contact type multi-point potential coding principle, generally fixes a resistance substrate on a gear shifting toothed plate, fixes a metal electric brush on a gearbox shell, and carries out gear identification through codes of on-off of different contacts caused by the swinging of the toothed plate during gear shifting. The installation and arrangement mode is complex, the parts are multiple, and after long-time use, the contact piece can be separated instantly and contact badly, so that the identification signal error is caused. Therefore, it is desirable to provide a new type of P range identification device that can overcome the disadvantages of the conventional P range identification device.

SUMMERY OF THE UTILITY MODEL

The utility model provides a simple structure, the reliable P of installation keep off recognition device.

According to the utility model discloses a P that an aspect provided keeps off recognition device has and keeps off position sensor, selector shaft and the castellated plate of shifting, keeps off the position sensor and fixes on the transmission casing, and the selector shaft is connected with the castellated plate of shifting, and wherein, the rotor that keeps off the position sensor and selector shaft fixed connection, the turned angle who keeps off the position sensor through surveying the selector shaft discerns P and keeps off the position.

According to an aspect of the present invention, a P-shift position identifying device is provided, in which a rotor of a shift position sensor and a shift shaft have a circumferential positioning structure for circumferentially limiting relative movement thereof.

According to the utility model discloses a P that an aspect provided keeps off recognition device, as circumference location structure, gear shift shaft have the fixed zone section of the appearance of cutting flat and keep off the rotor of position sensor and have the shape complex mounting hole of cutting flat.

According to the utility model discloses a P that an aspect provided keeps off recognition device keeps off the position sensor rotor and passes through screw thread fixed connection with the selector shaft.

According to the utility model discloses a P that an aspect provided keeps off recognition device keeps off the position sensor and passes through on fixing bolt and the dowel installation gearbox casing.

According to the utility model discloses a P that an aspect provided keeps off recognition device, the gear shift axle passes through the elastic pin and is connected with the castellated plate of shifting.

According to the utility model discloses a P that an aspect provided keeps off recognition device, the selector shaft passes through spacing pin and installs on the transmission casing.

According to the utility model discloses a P that an aspect provided keeps off recognition device, the castellated plate of shifting still with shift leaf spring elastic connection, the castellated plate of shifting cooperatees in order to accomplish the parking with the leaf spring of shifting.

Furthermore, the utility model provides a vehicle transmission with such P keeps off recognition device. Since this gearbox is provided with a P-gear identification device according to the present invention, it is possible to have the advantages as described above.

Finally, the utility model provides a vehicle with such P keeps off recognition device. Since this vehicle is provided with the P range recognition device according to the present invention, it is possible to have the advantages as described above.

Replace traditional complicated P to keep off identification means, the utility model discloses a rotor and the gear shift axle lug connection that will keep off the position sensor, judge through survey gear shift axle and rotor whether be in P fender mode for the turned angle who keeps off the casing of position sensor, its simple structure, installation overall arrangement are simple and can satisfy the recognition function who keeps off the position to P better.

Drawings

The invention will be explained in more detail with reference to the drawings, in which,

fig. 1 shows a perspective illustration of a P range identification device;

fig. 2 shows a perspective view of the P range identification device according to fig. 1 from the rear.

Detailed Description

It is easily understood that, according to the technical solution of the present invention, a person skilled in the art can propose various alternative structural modes and implementation modes without changing the essential spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present invention, and should not be considered as limiting or restricting the technical solutions of the present invention in their entirety or in any other way.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms.

Fig. 1 and 2 schematically show a P-range detection device in the unassembled state, which has a gear position sensor 1, a gear shift shaft 2 and a gear shift gate 3. On the outer circumferential surface of the housing of the gear sensor 1, there is a mounting boss for connection to the transmission housing 4, where the housing of the gear sensor 1 is mounted at the transmission housing 4 by means of fixing bolts 5 and locating pins (not shown in the figures). Here, the gear position sensor 1 does not use the shift shaft 2 as a positioning reference during the mounting process, and can avoid the interference problem during the assembly process while ensuring the recognition accuracy. The gear shift shaft 2 is connected to the gear shift tooth plate 3 at the end remote from the gear sensor 1 by an elastic pin 6, and the gear shift shaft 2 is mounted on the transmission housing 4 by a limit pin 7.

It will be appreciated that the above mentioned connection means are non-limiting. The housing of the gear sensor 1 can also be fixedly connected to the transmission housing 4 in other ways, for example by means of fixing bolts and form-fitting pre-positioning structures which can be fixed to one another or only by means of fixing bolts. Similarly, the gear shift shaft 2 can also be connected with the gear shift tooth plate 3 through other threaded connection modes or a buckle structure, so that the gear shift shaft 2 can rotate together with the gear shift tooth plate 3 to complete the gear shift process.

As can be seen from fig. 1 and 2, the rotor 11 of the gear position sensor is fixedly connected to the gear shift shaft 2 by means of a circumferential positioning structure in order to limit the relative movement of the two in the circumferential direction. The circumferential positioning structure can be a fastening section 21 with a flattened outer shape, i.e. the gear shift shaft 2 has a flattened outer shape at the section fastened to the rotor 11 of the gear shift sensor (see fig. 2), and correspondingly a flattened mounting hole 12 (see fig. 2) is provided in the rotor 11 of the gear shift sensor, which fits into this. The gear shift shaft 2 with the flattened fastening portion 21 passes through the gear position sensor 1, forming a form-fitting fastening connection. In addition, there is sufficient clearance between the shift shaft 2 and the housing of the gear sensor 1 so that the shift shaft 2 can rotate therein, which can be achieved by controlling the radial dimension of the sector of the shift shaft 2 in the gear sensor 1.

Alternatively, the rotor 11 of the gear sensor can also be fixedly connected to the shift shaft 2 by a screw connection in order to axially and circumferentially limit the relative movement between the shift shaft 2 and the rotor 11. For example, the gear shift shaft 2 has an external thread, which is matched to an internal thread of the rotor 11, at the section connected to the rotor 11 of the gear sensor.

It will be appreciated that the fixed connection of the rotor 11 of the gear sensor to the gear shift shaft 2 can also be achieved by other fixing means limiting the relative movement in circumferential and/or axial direction.

In addition, the gear shifting tooth plate 3 is elastically connected with a gear shifting plate spring 8, and the gear shifting tooth plate and the gear shifting plate spring are matched with a gear shifting shaft to complete parking. The shifting gates 3 are designed in a disk-shaped manner and are provided at their outer periphery with the same number of recesses as there are gearbox gears, i.e. each recess represents a gear, so that during shifting of P gear the gear shift shaft is rotated by a certain angle.

When a driver switches to the P gear, the gear shifting shaft 2 is driven to rotate through external input, the gear shifting shaft 2 drives the gear shifting toothed plate 3 connected with the gear shifting shaft to rotate, and the parking structure is driven to complete parking through the gear shifting plate spring 8. In the process, the rotor 11 of the gear sensor rotates with the gear shift shaft 2, while the housing of the gear sensor 1 is fixed due to the fixed connection with the gearbox housing, and the gear sensor 1 detects the change of the magnetic field strength of the magnet on the rotor caused by the change of the position of the rotor 11 and transmits the change to the controller in the form of a PWM signal. Thereby, the rotation angle of the rotor 1 of the shift position sensor, that is, the rotation angle of the shift shaft 2 is obtained, and it is recognized that the vehicle is in the P range mode.

Similarly, when the driver disengages from the P gear, the external input drives the shift shaft 2 to rotate in the reverse direction, and the shift shaft 2 drives the shift tooth plate 3 to rotate in the reverse direction, so that the parking mechanism is in the engaged state. In the process, the gear position sensor 1 recognizes the reverse rotation angle and transmits it to the controller in the form of a PWM signal, thereby recognizing that the vehicle exits the P-range mode.

According to the utility model discloses a P keeps off recognition device through rotor 11 and the 2 lug connection of selector shaft that will keep off the position sensor, judges through survey selector shaft 2 and rotor 11 whether the vehicle is in P fender mode for the turned angle of keeping off the casing of position sensor 1, its simple structure, installation overall arrangement are simple and can satisfy the recognition function who keeps off the position to P better.

The utility model discloses still include a vehicle transmission, have the P of aforementioned arbitrary one or more embodiments and keep off recognition device, the technical characteristics that it consequently has and the technological effect that has correspond to the preceding description, and the retrench is no longer described herein.

The present invention also includes a vehicle having the P-gear identification device of any one or more of the above embodiments, wherein the technical features and technical effects thereof are as described above, and thus are not repeated herein.

It should be understood that all the above embodiments are exemplary and not restrictive, and that various modifications and changes in the specific embodiments described above, which may occur to those skilled in the art upon reading the teachings of the present invention, are intended to be within the scope of the appended claims.

Claims

The P-gear identification device is provided with a gear sensor, a gear shifting shaft and a gear shifting toothed plate, wherein the gear sensor is fixed on a gearbox shell, the gear shifting shaft is connected with the gear shifting toothed plate, and the P-gear identification device is characterized in that a rotor of the gear sensor is fixedly connected with the gear shifting shaft, and the gear sensor identifies a P-gear position by detecting a rotation angle of the gear shifting shaft.
2. The P range identification device of claim 1, wherein the rotor of the range sensor and the shift shaft have circumferential locating structures for circumferentially limiting relative movement thereof.
3. The P range identification device of claim 2, wherein as the circumferential positioning structure, the shift shaft has a fixed section with a flattened profile and the rotor of the gear sensor has a flattened form-fitting mounting hole.
4. The P range identification device according to claim 1, wherein a rotor of the range sensor is fixedly connected to the shift shaft by a screw thread.
5. The P range identification device according to claim 1, wherein the range sensor is mounted on the transmission housing by a fixing bolt and a dowel pin.
6. The P range identification device according to claim 1, wherein the shift shaft is connected to the shift gate by a resilient pin.
7. The P range identification device of claim 1, wherein the shift shaft is mounted on the transmission housing by a limit pin.
8. The P range identification device of claim 1, wherein the shift tooth plate is further elastically connected with a shift leaf spring, and the shift tooth plate and the shift leaf spring cooperate with the shift shaft to complete parking.
9. Vehicle gearbox characterized in that it has a P range identification device according to any of claims 1 to 8.
10. Vehicle, characterized in that it has a P range identification device according to any one of claims 1 to 8.