CN214146544U - Gear shifter - Google Patents

Abstract

Shifter (1) comprising: an upper case (10) provided with a shaft (101); a lower case (20); a shift roller (30) supported by the shaft (101) of the upper case (10) and rotatable about a rotation axis (R1); a shift block (70) fixed to the shift roller so as to be rotatable therewith about the rotational axis; a magnet (80) made integral with the shift block; a hall sensor (90) arranged to sense the magnetic field of the magnet and convert it into a shift signal to be sent to a control unit of the vehicle. The utility model provides a selector (1) has reduced the manufacturing cost of selector through making magnet (80) and shift block (70) as an organic whole, has simplified the assembly and has reduced the tolerance accumulation when making and assembling, and makes the connection between magnet and the shift block more firm.

Description

Gear shifter

Technical Field

The utility model provides a selector specifically is a roller type thumb selector.

Background

A shifter for a vehicle is required to perform two functions:

firstly, the driver needs to switch between different gears by means of a gear shifter. In the prior art, a magnet is usually provided in the shifter, and when the driver operates an actuator, such as a shift lever or a shift knob, during shifting, the magnet moves to different positions along with the operation of the driver, and a hall sensor in the shifter senses the magnetic field strength of the magnet and converts the magnetic field strength into a gear signal to be output to a control unit TCU of the vehicle, and the TCU performs the shifting operation.

Secondly, when the driver shifts into different gears, such as R, D, P, etc., by means of the gear shifter, the gear shifter needs to provide a corresponding feedback mechanism, giving the driver feedback of whether he has finished the gear operation.

An electronic gear shift mechanism is known from CN 210423680U (published: 4/28/2020). In the electronic shift mechanism, an end of a shift lever is inserted in a shift gate, and a magnet is fixed to the end of the shift lever by a fixing member, and a double hall sensor sensing a magnetic field of the magnet is provided in a controller.

A knob electronic shifter is known from CN 110185785 a (publication date: 2019, 8, 30). In the shifter, a magnet is installed directly below a rotating shaft of a knob assembly through a fixing member, and a hall sensor for sensing the magnet is provided on one side of the magnet.

A push-rod shifter is known from CN 209540003U (published: 2019, 10 and 25). In the shifter, a shift pin is connected to the bottom of a shift lever, the end of the shift pin is located in a groove of a path block on a lower shell, a shift slider is arranged in a side opening of the lower shell, two magnets are arranged on the shift slider, and two Hall sensors are correspondingly arranged on a printed circuit board assembly included in the shifter and are respectively used for sensing the rotation angle of one magnet and the position of the other magnet.

The existing gear shifter is mainly provided with a plurality of components such as a stop block, a magnet bracket, a magnet rocker arm and a Hall sensor, wherein the magnet bracket and the magnet rocker arm are used for fixing the magnet. As a result, the number of components involved in fixing the magnet is large, and accordingly, tolerance is generated in manufacturing and assembling of the components, so that the tolerance accumulation becomes complicated, and an error is likely to occur in the magnetic field induction of the magnet.

Second, although the shift block and the magnet holder are both made of the same POM material, they tend to be two separate pieces in existing shifters. This results in the need for two separate sets of molds for separate manufacturing during production, which results in increased costs.

In addition, the two-dimensional hall sensors are generally adopted in the existing gear shifters, and in order to be matched with the two-dimensional hall sensors, the magnets can only move on a plane, so that the movement tracks of the magnets are limited, and further, the internal structure of the gear shifter is limited.

SUMMERY OF THE UTILITY MODEL

The object on which the present invention is based is to propose a shifter which allows to improve the above-mentioned drawbacks existing in the prior art and to make the manufacture and assembly of the shifter simple, reducing the manufacturing and assembly costs.

According to the utility model discloses a selector includes: an upper housing provided with a shaft portion; a lower housing; a shift roller supported by the shaft portion of the upper housing and rotatable about a rotation axis; a shift block fixed to the shift roller so that the shift block can rotate together with the shift roller around the rotation axis; a magnet integrally formed with the shift block; and the Hall sensor is arranged to sense the magnetic field of the magnet and convert the magnetic field into a gear shifting signal to be sent to a control unit of the vehicle.

By making the magnet and the shift block as one body, the shift block with the magnet rotates together with the shift roller. The magnetic field of the magnet is sensed by the hall sensor and a shift signal is obtained. At the same time, such an arrangement reduces the number of parts included in the shifter, particularly parts for fixing the magnet, and eliminates a separate magnet holder and a magnet rocker arm, thereby enabling to reduce the number of molds required in the process of manufacturing the shifter, reducing the manufacturing cost, and also reducing tolerance accumulation generated at the time of assembly, and simplifying the assembly process.

In a preferred embodiment of the invention, a magnet receptacle is provided in the shift block, in which magnet receptacle the magnet of the gear selector is arranged and is made in one piece with the shift block by a plastic-coated process. The materials adopted in the shift block and the plastic coating process are both POM. Thereby it is ensured that the magnet is firmly integrated with the shift block, that the magnet does not become detached from the shift block during ordinary use of the shifter, and that no additional material is needed to make the shift block integrated with the magnet.

In a preferred embodiment of the present invention, the hall sensor included in the gear shifter is a three-dimensional hall sensor. The three-dimensional hall sensor enables more accurate sensing of the movement trace of the magnet made integral with the shift block, and also does not restrict the movement of the magnet in a two-dimensional plane, which reduces the restriction on the internal structure of the shifter.

The gear selector also comprises a printed circuit board, and preferably the three-dimensional hall sensor is arranged directly on the printed circuit board without further connecting lines.

Preferably, the three-dimensional hall sensor is disposed on the printed circuit board by soldering. Therefore, a connecting wire between the Hall sensor and the printed circuit board can be omitted, the risk that the sensor data transmission is influenced due to possible breakage of the connecting wire is reduced, and meanwhile, the assembling process of the gear shifter is simplified.

Preferably, the printed circuit board is arranged above and connected with the lower housing of the gear shifter, for example by a snap-fit engagement, and the printed circuit board is arranged such that the three-dimensional hall sensor arranged directly thereon is located below the shift roller, preferably directly below the magnet when the shift roller is in the neutral position. Such an arrangement facilitates the three-dimensional hall sensor to accurately sense the magnetic field change of the magnet in the shift block.

In an embodiment of the invention, the shift block is connected to the shift roller by means of a fastening element. Specifically, the gear shifting block is provided with a fixing hole. During installation, the fastening piece is inserted through the fixing hole on the shift block and inserted into the fixing hole on the shift roller, so that the shift block is firmly fixed at the shift roller, and the shift block and the magnet therein can be ensured to rotate around the rotation axis along with the shift roller when the shift roller is actuated. The fasteners may be bolts or screws, or other fasteners that effect a removable connection. Preferably, the shift block is provided with two fixing holes.

In order to facilitate the positioning during the installation, a positioning column can be arranged on the shifting block. From this, with the help of the reference column, can realize simpler and easy change the dog to the installation on the gyro wheel of shifting, concrete mode is as follows: during installation, the positioning column is firstly inserted into the positioning concave part correspondingly arranged on the gear shifting roller to realize the initial positioning installation of the gear shifting stop block, and then the fastening piece, such as a bolt, penetrates through the fixing hole as described above.

In one embodiment of the present invention, the shift roller is provided with a protrusion extending in the length direction on the outer circumferential surface thereof. The shift roller can be actuated to rotate about the axis of rotation by exerting a force on the projection that is orthogonal to the radial direction. Other shapes of the actuating portion are also contemplated.

In a preferred embodiment of the invention, the shift block is further provided with a sliding surface at its lower surface, and an arc-shaped track is provided on the sliding surface, wherein the arc-shaped track comprises a central recess and at least one protrusion. The shifter further comprises a plunger disposed in a hole provided in the lower housing and externally sheathed with a plunger spring and a plunger sleeve, a first end of the plunger projecting from the hole towards the shift roller, and the plunger being arranged such that the first end always abuts against the arc-shaped rail by means of the plunger spring.

Here, it is envisaged that when the first end of the plunger abuts the central recess of the arcuate track, the shift roller is not rotated, i.e. the shift roller is in a neutral position.

Thus, as the shift roller is actuated by the driver, the shift roller rotates about the rotational axis, along with which a shift block fixed to the shift roller rotates about the rotational axis, such that the arcuate track rotates relative to the first end of the plunger, which thereby slides against the arcuate track by means of the plunger spring. During this process, the first end of the plunger may slide over the central recess and boss. In this process, since the plunger spring is compressed to different degrees, the reaction force it gives to the shift block, that is, the restoring force of the plunger spring, is also different. This reaction force is transmitted to the driver's hand via the shift roller. The magnitude of the plunger spring's feedback force varies due to the different degrees of compression of the plunger spring as it slides in the central recess and over the boss. The driver's hand is thus subjected to a feedback force similar to a switch, switching between two force values, namely a feedback force corresponding to the central recess and a feedback force corresponding to the protrusion. The change in the magnitude of the force value gives the driver feedback on whether the shift was successful or not.

Further preferably, the shift roller is rotatable about the rotational axis through an angle of less than 360 degrees in both directions, i.e. clockwise and counter-clockwise, and the at least one protrusion in the arcuate track is at least one pair of protrusions symmetrically arranged about the central axis of the arcuate track.

In such an arrangement, the driver can actuate the gear shifting roller in two directions, and the symmetrically arranged convex parts in the arc-shaped track ensure that the driver can obtain effective feedback no matter which direction the driver actuates the roller, and can sense that the driver rotates the gear shifting roller by a certain angle, so that the gear shifting operation of shifting to the previous gear or the next gear is completed.

Further, it is also contemplated that the arcuate track includes two or more pairs of lobes. In such an embodiment, it is contemplated that the shift roller can still rotate about the axis of rotation in both directions, wherein the shift roller rotates through an angle of no more than 30 degrees in one direction. In such an arrangement, the operator can actuate the shift roller through two "steps" in one direction, i.e., cause the shift roller to rotate through two steps before the shift roller is returned to neutral. Similarly, the driver's hand will experience feedback that switches over two stages in succession as the first end of the plunger will continue to pass over the two lobes.

In another embodiment, it is also contemplated that the arcuate track includes only a pair of lobes and that the shift roller can rotate in one direction through an angle of no more than 25 degrees about the axis of rotation.

Drawings

Additional features and advantages are set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the embodiments described herein, including the detailed description which follows, the claims, as well as the appended drawings. In the drawings:

fig. 1 shows a gear selector according to the invention in an exploded perspective view;

fig. 2 shows a top view of the shifter shown in fig. 1;

FIG. 3 shows a cross-sectional view along section A-A shown in FIG. 2;

FIG. 4 shows a cross-sectional detail view along section B-B shown in FIG. 3; and

fig. 5 shows a shift block in the gear shifter shown in fig. 1.

List of reference numerals

1 Gear shifter

10 upper shell

101 shaft part

102 sleeve

20 lower casing

201 hole

30 shift roller

301 raised part

40 plunger

401 first end

50 plunger sleeve

60 plunger spring

70 shift block

701 magnet housing part

702 sliding surface

703 arc track

7031 center recess

7032 first projection

7033 second projection

7034 first recess

7035 second recess

704 first fixing hole

705 second fixing hole

706 locating column

80 magnet

90 three-dimensional Hall sensor

P printed circuit board

R1 axis of rotation

R2 central axis

D1 counterclockwise

D2 clockwise.

Detailed Description

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that this description is not intended to limit the invention to the exemplary embodiments shown. On the contrary, the invention is intended to cover alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims. For convenience in explanation and accurate definition in the appended claims, the terms "upper", "lower", "inner" and "outer" are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures.

With reference to fig. 1 to 5, a shifter, generally designated by reference numeral 1, is described.

The shifter 1 includes an upper case 10, a lower case 20, a shift roller 30, a shift block 70, a magnet 80 molded as one body with the shift block 70 by a plastic coating process, a printed circuit board P, and a three-dimensional hall sensor 90 disposed on the printed circuit board P.

As shown in fig. 1, the upper case 10 includes a shaft portion 101. The shift roller 30 of the shifter 1 is supported on a shaft portion 101, and is provided with respective sleeves 102 (shown only in fig. 1) on both left and right ends, the shift roller 30 being pivotable about a rotational axis R1 (see fig. 2).

As shown in the drawing, the shift roller 30 includes a projection 301 extending along the length direction (axial direction) thereof on the outer circumferential surface thereof. The boss 301 may facilitate the application of force by a user. When using the gear shifter 1, a user, for example a driver, exerts a lateral force on the projection 301 of the shift roller 30, and the shift roller 30 is thus rotated about its rotational axis R1 through an angle of less than 360 degrees in a clockwise or counterclockwise direction.

In this context, a lateral force refers to a force that includes a component that is orthogonal to the radial direction of the shift roller 30.

Specifically, in the present embodiment, the shift roller 30 can be rotated by no more than 30 degrees in both the clockwise and counterclockwise directions about the rotational axis R1.

As shown in fig. 1, and as can be seen more clearly in fig. 5, the shift block 70 comprises a magnet housing 701 and a sliding surface 702. A magnet 80 is disposed in the magnet housing 701. The magnet 80 is molded as one piece with the shift block 70 by an overmolding process. The shift block 70 is made of a POM material by an injection molding process.

As shown, the shift block 70 is provided with two fixing holes 704, 705 and includes a positioning post 706 for mounting the shift block 70 to the shift roller 30. When the block is mounted, the positioning post 706 is inserted into a positioning recess (not shown) correspondingly disposed on the shift roller 30 for preliminary positioning. Next, a fastener, such as a bolt (not shown), is passed through the two fixing holes 704, 705 of the shift block 70 and screwed into a fixing hole (not shown) provided on the shift roller 30, thereby firmly connecting the shift block 70 to the shift roller 30 by means of the fastener.

Thus, as the shift roller 30 is pushed or pulled to rotate about the rotational axis R1 due to the force exerted by the driver on the boss 301, the shift block 70 also rotates about the rotational axis R1. At this time, the magnets 80 overmolded in the shift block 70 also rotate together about the rotational axis R1 through an angle corresponding to the angle through which the shift roller 30 rotates.

The printed circuit board P is disposed above the base or lower case 20, and is engaged with a snap fit portion provided on the lower case 20 by a snap fit portion provided on a lower surface thereof, and is fixedly connected to the lower case 20 by a fastener.

As can be seen in fig. 1, a three-dimensional hall sensor 90 is disposed on the printed circuit board P. The three-dimensional hall sensor 90 is disposed on the printed circuit board P by soldering, and the three-dimensional hall sensor 90 is disposed directly below the magnet 80 overmolded in the shift block 70.

The three-dimensional hall sensor 90 is used to sense the magnetic field of the magnet 80. When the shifter 1 is used, the magnet 80 rotates together about the rotation axis R1 as the roller 30 is turned, and thus the distance of the magnet 80 from the three-dimensional hall sensor 90 changes. Therefore, the magnetic field sensed by the three-dimensional hall sensor 90 will also change, and the three-dimensional hall sensor 90 converts it into a shift signal to be sent to the control unit TCU of the vehicle to perform a shift operation.

The following description is made with reference to fig. 1, 3, and 4. As shown, a hole 201 is opened in the lower case 20. A plunger 40 is inserted into the hole 201, and a plunger sleeve 50 and a plunger spring 60 are fitted around the plunger 40. The plunger 40, the plunger sleeve 50, and the plunger spring 60 are installed such that the upper end of the plunger 40, i.e., the first end 401, can always abut against the lower surface of the shift block 70, i.e., the arc-shaped track 703 provided in the sliding surface 702, by the restoring force of the plunger spring 60.

Details of the arcuate track 703 are shown in detail in fig. 4. The arcuate track 703 is generally convex upward toward the center of the shift roller 30, but its track surface is not a continuous curve, and other overall shapes of the arcuate track 703 are also contemplated.

In the present embodiment, the arcuate rail 703 is configured in a one-step manner, that is, a central recessed portion 7031 is provided at the center of the arcuate rail 703, and a first protruding portion 7032 and a second protruding portion 7033 are provided mirror-symmetrically on both sides of the central recessed portion 7031 with the arcuate rail central axis R2 as a symmetry axis.

It may be noted that the arcuate track 703 further comprises a first recess 7034 and a second recess 7035 outboard of the first and second protrusions 7032, 7033, i.e., further from a central axis R2 passing through the central recess 7031.

It should be noted that, with reference to the orientation in fig. 4, "concave" refers to the portion of the arcuate track that projects upward, while "convex" refers to the portion of the arcuate track that projects downward.

The basic principle of the force feedback given to the driver by the arc-shaped track 703 provided on the shift block 70 at the time of shifting is exemplified below with reference to fig. 4.

In the drawing plane in which fig. 4 is located, the rotation axis R1 extends perpendicular to the drawing plane.

When the shift roller 30 is in the neutral position (i.e., when the driver is not pushing/pulling/toggling the shift roller 30 forward or backward), the first end 401 of the plunger 40 is pressed against the central recess 7031.

When a gear shift is to be performed, the driver applies an actuating force including a horizontal leftward or rightward component to the protrusion 301 of the shift roller 30 to rotate the shift roller 30 about the rotation axis R1, and when the rotation angle reaches a predetermined value, the driver is considered to have a gear shift intention and has operated the shift roller 30 to perform a corresponding gear shift operation.

For example, when the driver exerts a horizontal leftward force on the boss 301 of the shift roller 30, the shift roller 30 rotates in the counterclockwise direction D1 about the rotational axis R1. At this time, the arc-shaped rail 703 provided on the shift block 70 also rotates about the rotation axis R1 with the shift roller 30. Thus, the central recess 7031 against which the first end 401 of the plunger 40 abuts has a tendency to slide rightward relative to the first end 401 of the plunger 40.

In this case, the plunger 40 slides in against the curved surface extending leftward and downward of the central concave portion 7031, and is gradually pressed downward. The plunger spring 60 is compressed accordingly, and the return force of the plunger spring 60 increases as the degree of deformation of the plunger spring 60 increases, so the greater its force holding the first end 401 of the plunger 40 against the arcuate track 703 on the lower surface 702 of the shift block 70. This force is transmitted via the shift block 70 to the shift roller 30 and is thus fed back into the driver's hand via the projection 301 of the shift roller 30.

The feedback force is gradually increased until the first end 401 of the plunger 40 reaches the highest point of the first protrusion 7032, i.e., the most downward-convex point in the drawing, at which the plunger spring 60 is compressed and deformed to the maximum extent, and the restoring force thereof is maximized.

Thereafter, the first end 401 continues to slide along the arcuate track 703, slides over the curved surface of the first protrusion 7032 extending to the left, and finally reaches the first recess 7034.

During the rotation of the shift block 70 from the neutral position with the shift roller 30 about the rotational axis R1, when the shift roller 30 is in the neutral position, i.e., when the first end 401 of the plunger 40 abuts the central recess 7031 of the arcuate track 703, the plunger 40 is in the most extended state, the plunger spring 60 is compressed to a lesser or uncompressed degree, and thus the feedback force felt by the driver is also lesser or nearly absent. Then, when the driver tries to turn the shift roller 30, the first end 401 of the plunger 40 is pressed downward by the downwardly extending arcs on both sides of the highest point of the center concave portion 7031 of the arc-shaped rail 703, and the plunger spring 60 is thus compressed to start deforming, and the driver thus gradually feels a feedback force from the convex portion 301 of the shift roller 30. As described above, the feedback force imparted by the plunger spring 60 reaches a maximum when the shift roller 30 is rotated to a point such that the first end 401 of the plunger 40 abuts the highest point of the first protrusion 7032, i.e., the point in fig. 4 where the protrusion 7032 is most downwardly convex. This feedback force is significantly different from the feedback force experienced when the first end 401 of the plunger 40 eventually abuts the first recess 7034. When the driver feels the feedback force like this switching between the maximum value and the smaller value, it is confirmed whether he or she has successfully completed the shift actuation operation by the force fed back through the shift roller 30.

At the same time, when the first end 401 of the plunger 40 abuts the first recess 7034, the magnet 80 has also rotated through the angle required to shift first gear, e.g., 20 degrees, about the rotational axis R1 with the shift roller 30. The three-dimensional hall sensor 90 changes the distance from the magnet 80, and thus the sensed magnetic field at this point changes accordingly. This change is finally converted into a gear shift signal to be generated to the control unit TCU of the vehicle.

Similarly, an actuating force comprising a horizontal right component may also be applied to the boss 301 of the shift roller 30 such that the shift roller rotates in the clockwise direction D2 about the rotational axis R1. The first end 401 of the plunger 40 slides out of the central recess 7031, sliding against the arcuate track 703 along an arcuate surface extending down to the right of the highest point of the central recess 7031, past the highest point of the second protrusion 7033 and finally to the second recess 7035. In the process, the feedback force felt by the driver through the sliding roller 30 also changes, thereby giving the driver a way to confirm whether the driver has completed the shift operation.

In the illustrated embodiment, it is contemplated that the shift roller 30 will not rotate more than 25 degrees in a single direction D1 or D2 for this one-step arcuate track 703.

Meanwhile, a minimum threshold value of the angle which the shift roller 30 must rotate when the shift is performed by the shift roller is also assumed for whether the shift is to be performed, so that when the three-dimensional hall sensor 90 finds that the angle which the shift roller 30 rotates by does not exceed the threshold value, for example, 5 degrees by sensing the magnetic field of the magnet 80, it is considered that the rotation of the shift roller 30 is misoperated or not caused by human factor, and the shift signal is not transmitted to the TCU of the vehicle.

It should be noted that the slope of the surface between the central concave portion 7031 and the first protruding portion 7032 or the second protruding portion 7033, that is, the slope of the curved surface of the central concave portion 7031 extending from the highest point (uppermost convex point) shown in fig. 4 to both sides is not a fixed slope as shown in the figure. The illustrated slope is merely schematic in nature. The slope may become more jittery or slower, as desired. When the slope is relatively steep, the plunger spring 60 compresses to a greater extent to allow the first end 401 of the plunger 40 to slide out of the central recess 7031 along the curved surface. Thus, the slope of this portion of the arcuate track 703 may be set.

Thus, the larger the slope is set, the larger the force that the driver needs to apply at the start of the shift operation, so that it is possible to avoid the shift roller 30 from rotating due to an erroneous shift operation or to an unintended factor such as jolt caused by a road surface condition during driving. In other words, the first end 401 of the plunger 40 that abuts in the neutral position in the central recess 7031 may also act to some extent as a stop preventing accidental rotation of the shift roller 30.

In embodiments not shown, it is also contemplated that two or more pairs of projections may be provided on the arcuate track 703. The two or more pairs of lobes are also symmetrically disposed about the central axis R2. Thus, the shift operation of shifting one or two stages can be performed by rotating the shift roller 30 in one direction.

In correspondence with such an arrangement, it is contemplated in such embodiments that the shift roller 30 rotates no more than 30 degrees in both directions D1, D2 about the rotational axis R1, and that the angles through which the shift roller 30 rotates are pre-divided. The different ranges of angles indicate whether the shift roller 30 has rotated two steps, one step, or has not rotated an effective angle, respectively.

With such a multi-step arc-shaped track 703, after the first end 401 of the plunger 40 passes different protrusions on the arc-shaped track 7031, the driver can sense whether the shifting operation is successfully completed by sensing a change in the feedback force, and can also sense whether the shifted gear is first or second.

The present invention can freely combine the embodiments within the scope thereof, or appropriately modify or omit the embodiments.

Claims (10)

1. Shifter (1) comprising:

An upper case (10) provided with a shaft (101);

a lower case (20);

a shift roller (30), the shift roller (30) being supported by the shaft portion (101) of the upper case (10) and being rotatable about a rotational axis (R1);

a shift block (70), the shift block (70) being fixed to the shift roller (30) such that the shift block (70) is rotatable with the shift roller (30) about the rotation axis (R1);

a magnet (80) made integral with the shift block (70);

a Hall sensor (90) arranged to sense the magnetic field of the magnet (80) and convert it into a shift signal to be sent to a control unit of the vehicle.

2. The shifter (1) of claim 1,

the Hall sensor (90) is a three-dimensional Hall sensor.

3. The shifter (1) of claim 2,

the shift block (70) is provided with a magnet housing part (701), and the magnet (80) is arranged in the magnet housing part (701) and is made integral with the shift block (70) by a plastic-coated process.

4. The shifter (1) of claim 3,

the shift block (70) is further provided with a sliding surface (702) at a lower surface, on which sliding surface (702) an arcuate track (703) is provided, wherein the arcuate track comprises a central recess (7031) and at least one protrusion,

The shifter (1) further comprises a plunger (40),

a hole (201) is arranged in the lower shell (20),

wherein the plunger (40) is arranged in the hole (201) and the plunger (40) is sheathed with a plunger spring (60), a first end (401) of the plunger (40) protrudes from the hole (201) towards the shift roller (30), and

wherein the plunger (40) is arranged such that the first end (401) can always abut against the arcuate track (703) by means of the plunger spring (60).

5. The shifter (1) of claim 4,

the shift roller (30) can rotate about the rotation axis (R1) through an angle of less than 360 DEG in both directions, and

the at least one protrusion is at least one pair of protrusions symmetrically disposed about a central axis (R2) of the arcuate track (703).

6. The shifter (1) of claim 5,

the shift roller (30) can rotate about the rotational axis (R1) through an angle of not more than 30 degrees.

7. The shifter (1) of claim 6,

the shift block (70) is provided with a fixing hole (704, 705) and a positioning column (706), and the shift block (70) is fixed to the shift roller (30) by means of a bolt passing through the fixing hole (704, 705) and the positioning column (706), wherein the positioning column (706) is inserted into a positioning recess of the shift roller (30).

8. The shifter (1) of any one of claims 4 to 7,

the gear shifter (1) further comprises a printed circuit board (P), and the three-dimensional Hall sensor (90) is arranged directly on the printed circuit board (P).

9. The shifter (1) of claim 8,

the printed circuit board (P) is disposed above and connected to the lower case (20), and the printed circuit board (P) is disposed such that the three-dimensional Hall sensor (90) is located below the shift roller (30).

10. The shifter (1) of claim 9,

the shift roller (30) is provided with a protrusion extending in a length direction on an outer circumferential surface thereof.

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