CN111828609A

CN111828609A - Monostable electronic gear shifting device and vehicle with same

Info

Publication number: CN111828609A
Application number: CN201910323959.1A
Authority: CN
Inventors: 傅兵; 邓长青; 林健标; 戴明; 梁森
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2019-04-22
Filing date: 2019-04-22
Publication date: 2020-10-27

Abstract

The invention is suitable for the technical field of vehicle gear shifting devices, and discloses a monostable electronic gear shifting device and a vehicle with the gear shifting device. The monostable electronic gear shifting device comprises a gear shifting rod assembly, a shell assembly, a gear block assembly and a gear signal sensing assembly, wherein the gear shifting rod assembly comprises a gear shifting rod which is rotatably connected to the shell assembly, the gear block assembly is arranged in the shell, and the gear block assembly is provided with a steady state position and a transient state position; the gear signal sensing assembly is respectively connected with the gear shift lever assembly and the shell assembly; the gear block assembly comprises a silencing guide structure, and the lower end of the gear shift rod assembly is abutted to the silencing guide structure. The vehicle is provided with the monostable electronic gear shifting device. According to the monostable electronic gear shifting device and the vehicle with the gear shifting device, the structural arrangement of the gear shifter is simplified, the sizes of parts can be reduced, the number of the parts is reduced, the feasibility of quality control is improved, and the user experience is good.

Description

Monostable electronic gear shifting device and vehicle with same

Technical Field

The invention belongs to the technical field of vehicle gear shifting devices, and particularly relates to a monostable electronic gear shifting device and a vehicle with the gear shifting device.

Background

With increasingly fierce competition in the automobile industry, gear shifting mechanisms applied to automobiles are more and more electrically implemented, and the elimination of a guy cable type gear shifting mechanism becomes a development and application trend of various large host factories. Most of the electronic gear shifters adopted in the automotive field at present are of a bistable type, a gear shift lever has 2 stable positions, namely a physical position where the gear shift lever can be naturally stopped, and also has a transient position where the gear shift lever can send out an R/N/D gear signal in a first stable row and a transient position where the gear shift lever can send out a manual M +/M-gear signal in a second stable row, the gear shift operation mode of the electronic gear shifter is complex, and particularly for a primary user, the experience of the user is influenced, and complaints are easily caused; the bistable electronic gear shifter is complex in structure, large in number of parts and components, large in influence on vehicle models with low requirements on development cost and weight, and capable of influencing design and development progress; due to the self-structure, structural components such as a motor, a transmission belt and the like which return to the first stable state position from the second stable state position are designed, so that in the working process of the motor, the whole transmission chain can generate loud sound, and a user with high requirement on silence in the vehicle is easy to complain; the bistable state electronic gear shifter has two rows of requirements of Y direction movement direction and X direction movement direction, has larger influence on the overall structural arrangement and size of the gear shifter, has large requirement on the arrangement space of the whole vehicle, has complex structural design and more parts, and is not easy to control quality.

In summary, the bistable electronic gear shifter mainly has the following problems: the gear shifter is high in cost, relatively large in arrangement space and complex in gear shifting operation action, and particularly when the bistable gear shifter returns to the first stable position from the second stable position, the return motor is loud in sound, so that complaints of users are easily caused, and the user experience is poor.

Disclosure of Invention

The present invention is directed to solve at least one of the above technical problems, and provides a monostable electronic shift device and a vehicle having the shift device, which is low in cost and has a good user experience.

The technical scheme of the invention is as follows: a monostable electronic gearshift device comprises a gearshift lever assembly, a shell assembly, a gear block assembly and a gear signal sensing assembly, wherein the gearshift lever assembly comprises a gearshift lever rotationally connected with the shell assembly, the gear block assembly is arranged in the shell, and the gear block assembly is provided with a steady state position for enabling the gearshift lever to naturally park and at least two transient positions for enabling the gearshift lever to rebound to the steady state position; the gear signal sensing assembly is respectively connected to the gear shift lever assembly and the housing assembly; the gear block assembly comprises a silencing guide structure, and the lower end of the gear shift rod assembly is abutted to the silencing guide structure.

Optionally, the shift lever assembly further includes an elastic member and a bullet, the lower end of the shift lever extends into the housing assembly, the bullet is slidably connected to the lower end of the shift lever, and two ends of the elastic member respectively abut against the shift lever and the bullet.

Optionally, the stopper piece subassembly includes the stopper piece, be provided with the steady state groove in the stopper piece, one side of steady state groove is provided with first transient state groove and second transient state groove, the opposite side of steady state groove is provided with third transient state groove and fourth transient state groove, third transient state groove, steady state groove, first transient state groove and second transient state groove set up along the single file in proper order, the degree of depth of third transient state groove is greater than the degree of depth of fourth transient state groove and be less than the degree of depth of steady state groove, the degree of depth of first transient state groove is greater than the degree of depth of second transient state groove and be less than the degree of depth of steady state groove. Optionally, the silencing guide structure is disposed over the steady-state groove and the transient-state groove, and the silencing guide structure is made of a flexible or/and elastic material.

Optionally, a self-backlash-eliminating bushing is arranged between the shift lever assembly and the housing assembly, and the self-backlash-eliminating bushing has a radial prepressing portion or/and an axial prepressing portion.

Optionally, a rotating shaft is fixedly arranged on the left side and the right side of the gear shift lever, shaft holes are arranged on the two opposite sides of the shell assembly, and the shaft holes are sleeved on the rotating shaft; the rotating shaft is provided with a shaft shoulder part, the self-eliminating gap bushing comprises a radial bushing part which is sleeved on the rotating shaft and extends into the shaft hole, and the self-eliminating gap bushing also comprises an axial gasket part which is arranged between the shaft shoulder part and the inner wall of the shell assembly;

the radial prepressing part is integrally connected with the end part of the radial bushing part, and the radial prepressing part extends obliquely towards the inner side or the outer side of the radial bushing part when in an uncompressed state;

the axial prepressing part is integrally arranged on the outer edge of the axial gasket part, and the axial prepressing part obliquely extends outwards from the outer edge of the axial gasket part in an uncompressed state.

Optionally, the housing assembly comprises a left housing and a right housing which are oppositely arranged, the left housing and the right housing are fixed through locking pieces, a circuit board is arranged on the left housing or the right housing, the gear signal sensing assembly comprises an angle sensor and a magnetic part used for triggering the angle sensor, the angle sensor is arranged on the circuit board, and the magnetic part is arranged on the gear shift lever assembly.

Optionally, the circuit board is disposed longitudinally and faces the shift lever assembly, and a circuit board cover is connected to the left housing or the right housing.

Optionally, the gear level cover is equipped with dustproof gleitbretter, dustproof gleitbretter with the casing subassembly meets.

The invention further provides a vehicle with the monostable electronic gear shifting device.

According to the monostable electronic gear shifting device and the vehicle with the gear shifting device, the gear shifting operation mode of the electronic gear shifting device is simplified, and parts such as a return motor and a transmission belt are eliminated, so that the number of the parts of the electronic gear shifting device is reduced to a great extent, the cost and the weight of the gear shifting device are reduced, and the design and development period of a vehicle model is favorably shortened; because parts on transmission chains such as a return motor and the like are eliminated, the sound generated in the process of returning the second stable state to the first stable state is eliminated, the use experience of a user is improved, and the user experience is good; simplify selector structural arrangement, spare part size can be miniaturized, has reduced spare part quantity, has improved quality management and control feasibility.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective assembly view of a monostable electronic shift device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a gear arrangement of a monostable electronic shift device according to an embodiment of the invention;

FIG. 3 is a schematic plan view of a monostable electronic shift device according to an embodiment of the invention;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic cross-sectional view taken along line B-B in FIG. 3;

FIG. 6 is an exploded perspective view of a housing assembly of a monostable electronic shift device according to an embodiment of the invention;

FIG. 7 is a perspective view of a shift lever of a monostable electronic shift device according to an embodiment of the invention;

FIG. 8 is a schematic perspective view of a shift block assembly in a monostable electronic shift device according to an embodiment of the invention;

FIG. 9 is a perspective view of a self-lash-eliminating bushing in a monostable electronic shift device according to an embodiment of the present invention;

FIG. 10 is an assembled schematic view of an assembled shift lever assembly in a monostable electronic shift device provided by an embodiment of the invention;

FIG. 11 is an assembly schematic of the shift lever assembly and housing assembly assembled in a monostable electronic shift device provided by an embodiment of the invention;

FIG. 12 is an assembled schematic view of an assembled housing assembly in a monostable electronic shift device according to an embodiment of the invention;

FIG. 13 is an assembled schematic view of an assembled circuit board and circuit board cover in a monostable electronic shift device provided by an embodiment of the invention;

FIG. 14 is a fully assembled schematic view of a monostable electronic shift device according to an embodiment of the invention;

FIG. 15 is a schematic top view of a monostable electronic gearshift provided by an embodiment of the present invention;

FIG. 16 is a schematic cross-sectional view taken along line A-A in FIG. 15;

FIG. 17 is an enlarged partial schematic view of FIG. 16 at B;

FIG. 18 is a partially exploded schematic view of a monostable electronic shift device according to an embodiment of the invention;

FIG. 19 is a schematic plan view of a monostable electronic shift device according to an embodiment of the invention;

FIG. 20 is a schematic cross-sectional view taken along section C-C in FIG. 19;

fig. 21 is a partially enlarged schematic view at D in fig. 20.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, directly disposed or connected, or indirectly disposed or connected through intervening elements or intervening structures.

In addition, in the embodiments of the present invention, if there are terms of orientation or positional relationship indicated by "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., it is only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the structure, feature, device or element referred to must have a specific orientation or positional relationship, nor must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The various features and embodiments described in the embodiments may be combined in any suitable manner, for example, different embodiments may be formed by combining different features/embodiments, and in order to avoid unnecessary repetition, various possible combinations of features/embodiments in the present invention will not be described in detail.

As shown in fig. 1 and 2, an embodiment of the present invention provides a monostable electronic shift device, which includes a shift lever assembly 10, a housing assembly 20, a shift block assembly 30 and a shift position signal sensing assembly 40, wherein the shift lever assembly 10 includes a shift lever 11 rotatably connected to the housing assembly 20, the shift block assembly 30 is disposed in the housing, the shift block assembly 30 is provided with one steady state position for naturally parking the shift lever 11 (shift lever assembly 10) and at least two transient positions for rebounding the shift lever 11 (shift lever assembly 10) to the steady state position, and the steady state position and the transient positions may be in a single row; the gear signal sensing assembly 40 is coupled to the shift lever assembly 10 and the housing assembly 20, respectively. The shift block assembly 30 includes a silencing guide structure 32, and the lower end of the shift lever assembly 10 abuts against the silencing guide structure 32, in this embodiment, the lower end of the shift lever assembly 10 elastically abuts against the silencing guide structure 32, that is, in the shifting process, the lower end of the shift lever assembly 10 keeps elastically abutting against the surface of the silencing guide structure 32 and slides on the surface of the silencing guide structure 32, so that the shift block assembly has a good silencing effect and a good operation hand feeling. In the initial state (i.e., when no external force is applied to operate) of the shift lever 11 (shift lever assembly 10), the shift lever 11 (shift lever assembly 10) naturally stops at the steady-state position; under the control of external force of a user, the gear shift lever 11 (the gear shift lever assembly 10) can rotate to a required transient position to complete gear shifting action, when the external force disappears, the gear shift lever 11 can automatically rebound to a fixed steady-state position from any transient position and naturally stops, and an initial state is recovered, so that the user can directly shift next time; because parts on transmission chains such as a return motor and the like are eliminated, the sound generated in the process of returning the second stable state to the first stable state is eliminated, the use experience of a user is improved, and the user experience is good; simplify selector structural arrangement, spare part size can be miniaturized, has reduced spare part quantity, has improved quality management and control feasibility.

Specifically, the shift lever assembly 10 further includes an elastic member 12 (i.e., a shift spring, which may be a metal coil spring) and a bullet 13 (a front end of which is a streamlined component, for example, a front end of which is an arc surface or a sphere-like structure), a lower end of the shift lever 11 extends into the housing assembly 20, the bullet 13 is slidably connected to a lower end of the shift lever 11, two ends of the elastic member 12 respectively abut against the shift lever 11 and the bullet 13, and a front end of the bullet 13 elastically abuts against the stop block assembly 30.

Specifically, the stopper assembly 30 includes a stopper 31, and a steady-state groove and transient grooves respectively disposed on two sides of the steady-state groove are disposed in the stopper 31. The steady state slot corresponds to a steady state position, i.e., in a steady state, the bullet head 13 remains parked in the steady state slot. The transient slot corresponds to a transient position, and when the bullet 13 slides to the corresponding transient slot, a corresponding shift signal, such as D-gear, R-gear, etc., is triggered. The adjacent steady-state grooves and the transient grooves and the adjacent two transient grooves can be transited by curved surfaces or inclined surfaces, and the depth of the steady-state groove is greater than that of the transient groove; in the adjacent transient grooves, the depth of the transient groove close to the steady-state groove is larger than that of the transient groove far away from the steady-state groove.

In the present embodiment, the shift block assembly 30 includes a shift block 31, a steady groove 311 (corresponding to the shift position O) is disposed in the shift block 31, a first transient groove 311 (corresponding to the shift position B1) and a second transient groove 312 (corresponding to the shift position B2) are disposed on one side of the steady groove 310, a third transient groove 313 (corresponding to the shift position F1) and a fourth transient groove 314 (corresponding to the shift position F2) are disposed on the other side of the steady groove 310, the fourth transient groove 314, the third transient groove 313, the steady groove 310, the first transient groove 311, and the second transient groove 312 are sequentially disposed along a single row as 5 shift grooves, the depth of the third transient groove 313 is greater than the depth of the fourth transient groove 314 and less than the depth of the steady groove 310, the depth of the first transient groove 311 is greater than the depth of the second transient groove 312 and less than the depth of the steady groove 310, that is, i.e., the shift position farther from the steady groove 310, the shallower its relative depth. Under the action of the elastic member 12 (shift position spring), the bullet head 13 always slides to the shift position groove with deeper depth when no other external force is applied, so the shift lever 11 can naturally stop at the steady-state groove 310 with the deepest depth without providing a power component such as a motor.

Specifically, the silencing guide structure 32 may be disposed on the surfaces of the steady-state groove 310 and the transient-state groove, and the silencing guide structure 32 is made of a flexible or/and elastic material. Amortization guide structure 32 can cover in the gear groove, and bullet head 13 does not directly act on the gear groove, and noise cancelling effect is good, does benefit to and improves user experience. Of course, a mute rubber sleeve can be sleeved at the front end of the bullet head 13, and noise can be reduced and operation hand feeling can be improved.

In this embodiment, a 5-point monostable operation mode is designed: after the gear shift lever 11 is pushed to the B1/F1 position, the gear shifting device sends an N gear signal; when the shift lever 11 is pushed to the B2 position, the shifting device sends an R shift signal; the shift lever 11 is pushed to the F2 position and the shifting device signals D. The O position is a return stable state physical position, the self-return function at B1/B2/F1/F2 is realized after the gear spring, the bullet head 13 and the gear block assembly 30 are assembled, and a plastic soft guide structure is wrapped in the gear block assembly 30, so that the gear operation sound is greatly reduced, and the operation hand feeling is improved.

Specifically, a self-backlash-eliminating bushing 50 is arranged between the shift lever assembly 10 and the housing assembly 20, the self-backlash-eliminating bushing 50 is provided with a radial pre-pressing portion 511 or/and an axial gasket portion 521, the radial pre-pressing portion 511 is radially pressed and has a pre-deformation structure in the radial direction, the axial gasket portion 521 is axially pressed and has a pre-deformation structure in the axial direction, namely, when the radial pre-pressing portion 511 is pressed, the radial pre-pressing portion can better eliminate the radial backlash through deformation and compression, and when the axial gasket portion 521 is pressed, the axial backlash can be better eliminated through deformation and compression.

Specifically, as shown in fig. 9 and 21, the left and right sides of the shift lever 11 are fixedly provided with the rotating shafts 14, the rotating shafts 14 can be transversely arranged, the shift lever 11 is longitudinally arranged, and the shift lever 11 and the rotating shafts 14 are in a cross-shaped structure, that is, a user can operate the shift lever 11 to swing back and forth to a required gear. A magnetic member (a magnet may be fixed to one end of the rotating shaft 14 and eccentrically disposed with respect to the rotating shaft 14). Shaft holes are formed in two opposite sides of the shell assembly 20, the shaft holes are sleeved on the rotating shaft 14, and the self-eliminating gap bushing 50 is arranged between the rotating shaft 14 and the shaft holes; the rotating shaft 14 has a shaft shoulder 141, the self-eliminating gap bushing 50 includes a radial prepressing portion 51 sleeved on the rotating shaft 14 and extending into the shaft hole, and the self-eliminating gap bushing 50 further includes an axial gasket portion 52 disposed between the shaft shoulder 141 and the inner wall of the housing assembly 20. The axial washer portion 52 and the radial pre-compression portion 51 may be integrally formed. The radial liner portion 51 may be cylindrical, the axial gasket portion 52 may be annular, and one end of the radial liner portion 51 may be integrally connected to an inner edge of the axial gasket portion 52.

The radial pre-pressing portion 511 is integrally connected to the other end of the radial bushing portion 51, the radial pre-pressing portion 511 extends obliquely towards the inside or the outside of the radial bushing portion 51 when in an uncompressed state, the radial pre-pressing portion 511 may be in a tapered ring shape (a trumpet shape), and in this embodiment, the radial pre-pressing portion 511 is arranged in a necking shape towards the inside of the radial bushing portion 51. In a specific application, a plurality of notch grooves 512 may be further disposed at the radial pre-pressing portion 511 to facilitate the deformation of the radial pre-pressing portion 511. In the concrete application, can also set up location convex rib 513 in the outside of radial prepressing portion 511, location convex rib 513 can block in the constant head tank that shaft hole department corresponds, avoids from eliminating clearance bush 50 and rotates at will, and is convenient for assemble.

The axial pre-pressing portion 521 is integrally disposed on an outer edge of the axial gasket portion 52, the axial pre-pressing portion 521 extends obliquely outward from the outer edge of the axial gasket portion 52 in an uncompressed state, and the axial pre-pressing portion 521 may extend obliquely outward toward one side of the radial bushing portion 51 or may extend obliquely outward toward the other side. The axial prepressing portion 521 may be in a tapered ring shape (horn shape), and in a specific application, a limiting groove 522 may be further disposed at the axial prepressing portion 521, and the limiting groove 522 may be clamped at a location protrusion structure at the inner side of the housing assembly 20.

After the gear shifting device is assembled in place, the radial prepressing portion 51 and the axial gasket portion 52 are prepressed, the gear shifting play of the gear shifting rod 11 in the axial direction and the radial direction can be eliminated, the operation touch feeling of the gear shifting rod 11 is good, and the user experience is further improved.

In a specific application, the prepressing amount of the radial prepressing part 511 is 0.1 to 1.5mm, preferably 0.2 to 0.5 mm; the prepressing amount of the axial prepressing part 521 is 0.1 to 1.5mm, preferably 0.2 to 0.5 mm. The present embodiment is installed and connected to the left and right housing assemblies 20 and the shift lever assembly 10 through the self-backlash-eliminating bushing 50, and the radial preload Δ R is set to R-R, and the recommended value is 0.2mm to 0.5 mm; the axial preload Δ L is set to D-D, with a recommended value of 0.2mm to 0.5 mm. Where D is the axial dimension of the axial pre-pressing portion 521, D is the axial gap, R is the radius of the rotating shaft 14, and R is the inner diameter of the radial pre-pressing portion 511.

Specifically, the housing assembly 20 includes a left housing 21 and a right housing 22 that are disposed opposite to each other, the left housing 21 and the right housing 22 are fixed by a locking member 24, and the locking member 24 may be a screw or a bolt. The left shell 21 or the right shell 22 is provided with a circuit board 60(PCB board), the circuit board 60 can be connected to the vehicle control unit, the gear signal sensing assembly 40 includes an angle sensor 41 and a magnetic member 42 for triggering the angle sensor 41, and the magnetic member 42 can be a magnet or a magnet. The angle sensor 41 is disposed on the circuit board 60, and the magnetic member 42 is disposed on the shift lever assembly 10. In this embodiment, the trigger function of the gear signal is realized by magnets embedded in the gear shift lever assembly 10 and the non-contact angle sensor 41 welded on the circuit board 60, and when the gear shift lever assembly 10 rotates, the angle sensor 41 on the circuit board 60 can recognize a position signal and further convert the position signal into a gear signal to be sent.

In this embodiment, the circuit board 60 is longitudinally disposed and faces the shift lever assembly 10, that is, the circuit board 60 is disposed in a side-standing manner, the structure is compact, and the space occupation of the monostable electronic shift device is further reduced, and the left housing 21 or the right housing 22 is connected with the circuit board cover 23, the circuit board cover 23 can be fixed by screws or bolts 25, and the circuit board cover 23 can cover the circuit board 60, so that the installation and maintenance are convenient.

Specifically, the shift lever 11 is sleeved with a dustproof sliding piece 16, and the dustproof sliding piece 16 can be a soft rubber sleeve or a leather sleeve. The dust-proof sliding piece 16 is connected to the housing assembly 20 to prevent foreign objects from being stuck on the shift lever 11.

The assembly sequence of the monostable electronic gearshift device provided by the embodiment can refer to the following: firstly, a dustproof slide sheet 16 is clamped on the gear shift lever 11 along the arrow direction; then the shaft sleeve, the gear spring, the bullet 13 and the gear block assembly 30 are clamped on the gear shift lever 11 along the direction of the corresponding arrow to form an assembly A, then the left shell 21, the right shell 22 and the shell screw (locking piece 24) are clamped and mounted on the assembly A along the direction of the arrow to form an assembly B, finally the circuit board 60, the circuit board cover 23 and the circuit board cover 23 are clamped and mounted on the assembly B along the direction of the arrow, and the assembly is completed.

The monostable electronic gearshift device that this embodiment provided has solved the fender position operation of bistable state electronic gearshift ware complicacy, with high costs, arrange that the space is great relatively, motor noise scheduling problem, when simplifying the operation action of shifting gears, cancels spare parts such as return motor, simple structure, do benefit to the structure miniaturization, excellent performance, with low costs.

The embodiment of the invention also provides a vehicle, which is provided with the monostable electronic gear shifting device, the electronic gear shifting device of the vehicle is simple in structure, small in size, excellent in performance and low in cost, and the problems that in the prior art, an electronic gear shifter is high in cost, relatively large in arrangement space and relatively complex in gear shifting operation action, and particularly when the bistable gear shifter returns to the first stable position from the second stable position, the sound of a return motor is large, and the like, so that the complaint of a user is easily caused are solved.

According to the monostable electronic gear shifting device and the vehicle with the gear shifting device, the gear shifting operation mode of the electronic gear shifting device is simplified, parts such as a return motor and a transmission belt are eliminated, the number of the parts of the electronic gear shifting device is reduced to a great extent, the cost and the weight of the gear shifting device are reduced, and the design and development period of a vehicle type is favorably shortened; because parts on transmission chains such as a return motor and the like are eliminated, the sound generated in the process of returning the second stable state to the first stable state is eliminated, the use experience of a user is improved, and the user experience is good; simplify selector structural arrangement, spare part size can be miniaturized, has reduced spare part quantity, has improved quality management and control feasibility.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A monostable electronic gearshift device comprising a shift lever assembly, a housing assembly, a shift block assembly and a shift signal sensing assembly, wherein the shift lever assembly comprises a shift lever rotatably connected to the housing assembly, the shift block assembly is disposed within the housing, the shift block assembly is provided with one steady state position for naturally parking the shift lever and at least two transient positions for allowing the shift lever to rebound to the steady state position; the gear signal sensing assembly is respectively connected to the gear shift lever assembly and the housing assembly; the gear block assembly comprises a silencing guide structure, and the lower end of the gear shift rod assembly is abutted to the silencing guide structure.

2. A monostable electronic gearshift device according to claim 1, wherein the shift lever assembly further comprises a resilient member and a bullet, the lower end of the shift lever extending into the housing assembly, the bullet being slidably connected to the lower end of the shift lever, the resilient member bearing against the shift lever and the bullet respectively.

3. A monostable electronic shift device according to claim 2, wherein the block assembly includes a block in which there is a steady groove, one side of the steady groove is provided with a first transient groove and a second transient groove, the other side of the steady groove is provided with a third transient groove and a fourth transient groove, the third transient groove, the steady groove, the first transient groove and the second transient groove are arranged in a single row in sequence, the depth of the third transient groove is greater than that of the fourth transient groove and less than that of the steady groove, and the depth of the first transient groove is greater than that of the second transient groove and less than that of the steady groove.

4. A monostable electronic shift device according to claim 3, in which the silencing guide overlies the steady state and transient state grooves, the silencing guide being of flexible or/and resilient material.

5. A monostable electronic shift device according to any of claims 1 to 4, wherein a self-backlash-reducing bush is provided between the shift lever assembly and the housing assembly, the self-backlash-reducing bush having a radial or/and axial preload.

6. A monostable electronic gearshift device according to claim 5, wherein a rotary shaft is fixedly provided to the left and right sides of the shift lever, and shaft holes are provided to the opposite sides of the housing assembly, the shaft holes being fitted around the rotary shaft; the rotating shaft is provided with a shaft shoulder part, the self-eliminating gap bushing comprises a radial bushing part which is sleeved on the rotating shaft and extends into the shaft hole, and the self-eliminating gap bushing also comprises an axial gasket part which is arranged between the shaft shoulder part and the inner wall of the shell assembly;

7. A monostable electronic gearshift device according to any one of claims 1 to 4, wherein the housing assembly includes a left housing and a right housing which are arranged in an opposed relationship, the left housing and the right housing are fixed by a locking member, the left housing or the right housing is provided with a circuit board, the gear signal sensing assembly includes an angle sensor and a magnetic member for triggering the angle sensor, the angle sensor is provided on the circuit board, and the magnetic member is provided on the shift lever assembly.

8. A monostable electronic shift device according to claim 7, wherein the circuit board is located longitudinally towards the shift lever assembly and a circuit board cover is attached to either the left housing or the right housing.

9. A monostable electronic gearshift device according to any of claims 1 to 4 wherein the shift lever sleeve is fitted with dust slides which interface with the housing assembly.

10. A vehicle, characterized in that it has a monostable electronic gearshift device according to any one of claims 1 to 9.