JPH0590027U - Position detection device in transmission - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to reduce the manufacturing cost by sharing parts in a position detecting device for a transmission. [Structure] The shift inner shaft 2 is provided with a magnet holder 8 that swings integrally with the shift inner shaft 2.
Magnets 11, 12, 13 at a plurality of different positions of
Put on. At a position close to the magnet holder 8,
One of the magnets 11, 12, 13 is provided corresponding to each of the magnets 11, 12, 13 and corresponds to the shift position corresponding to the rotational position of the shift inner shaft 2.
By facing each other, the shift position switch 14 having a plurality of magnetic detection elements such as Hall elements for detecting the magnetism of the magnets 11, 12, 13 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a position detecting device applied to a gear position detecting device of a transmission (hereinafter referred to as a transmission), and more particularly to an improved technique of a position detecting device using a magnetic sensor.

[0002]

[Prior Art]

 Conventionally, as shown in FIGS. 9 and 10, the movement of a shift knob of a driver's seat based on a gear shift operation is transmitted to a select outer lever 30 and a shift outer lever 31 located outside the transmission through a link mechanism to perform a select / shift operation. I am trying to do.

Then, in the select system, the movement related to the select is transmitted from the select outer lever 30 to the select inner lever 32, and the select inner lever 32 slides on a shift inner lever (hereinafter referred to as a shift lever) 33. Then, the shift lever 33 is moved to the desired select row. In the shift system, the shift outer lever 31 oscillates and the shift lever 33 is rotated, whereby the shift lever 33 moves one of the shifters 34 to perform "gearing".

Regarding the shift system, the movement of the shift knob is often transmitted to the shift outer lever 31 via the power assist device 35. The above-mentioned "gearing" means that the movement of the shifter 34 is transmitted to the shift shaft, and the sleeve is operated via the shift fork, and this sleeve meshes with the synchronizer cone and power is transmitted.

The movement distance of the operation system for moving the shifter 34 for this “gearing” is called a shift stroke. Further, conventionally, as shown in the transmission operation mechanism of the shift system of FIG. 11, the shift outer lever 31 and the select outer lever 30 described above are operated by actuators 36 such as air cylinder devices provided correspondingly to them. There is something I did.

Further, as an actuator using an air cylinder device or the like, a striker 37 (corresponding to a shift inner lever) is provided on an operation shaft 36a of the actuator 36 as shown in a shift transmission operation mechanism of FIG. There is one in which the shifter 34 in the transmission is moved by the striker 37.

In the transmission as described above, a device for detecting the gear position is provided, and the transmission is controlled based on the detected gear position. This gear position detecting device is provided with a device for detecting the select position of the select system and a device for detecting the shift position of the shift system, and detects the shift gear position based on the position detected by both position detecting devices. It is composed of

For example, as shown in FIGS. 11 and 12, the shift position detecting device mounts a single magnet 38 on an actuating shaft 36 a of an actuator 36 and detects a stroke position of the actuating shaft 36 a of the actuator 36. When the magnets 38 face each other at different positions, a shift position switch 40 having a plurality of magnetic detection elements 39 such as Hall elements for detecting the magnetism of the magnets 38 is provided (actually opened. (See JP 62-149659 A).

[0009]

[Problems to be solved by the device]

 By the way, for example, the meshing stroke of the transmission gears inside the transmission is different for each transmission, and the shift stroke is naturally different for each transmission. For this reason, in the conventional position detection device as described above, it is not possible to provide the same position switch for another transmission with different meshing strokes of the transmission gears inside the transmission, and it is necessary to equip each transmission with a different position switch. There is.

As a result, conventionally, it is impossible to share the position switch, and it is impossible to reduce the manufacturing cost. It is also possible to provide the same position switch for each transmission and adjust the shift stroke shift by the ratio of the operation amount of the outer lever on the output side of the actuator and the operation amount of the inner lever in the transmission. At the same time, the shift force transmitted to the transmission also changes, which is unthinkable.

In view of the conventional problems described above, the present invention makes it possible, for example, to provide the same position switch for another transmission in which the meshing strokes of the transmission gears in the transmission are different, The objective is to reduce the manufacturing cost by sharing parts.

[0012]

[Means for Solving the Problems]

 Therefore, the position detecting device for a transmission according to the present invention is attached to a transmission component that moves in accordance with a gear shift operation, and has a displacement member that is displaced in position as the component operates and a plurality of different positions of the displacement member. The magnet to be mounted is provided in a position close to the displacement member so as to correspond to each of the magnets, and one of the magnets faces the position corresponding to the operating position of the component, so that And a position switch having a plurality of magnetic detection elements for detecting the magnetism of the magnet.

[0013]

In such a configuration, when the transmission component operates based on the gear shift operation, the position of the displacement member is displaced, and thereby the position of each magnet mounted on the displacement member is changed. When the front shift position detection magnet faces one magnetic detection element when the front shift position is in the operating state, the voltage or resistance value of the magnetic detection element changes, and the front shift position is detected. ..

Therefore, by changing the position of each magnet in the displacement member, the moving position of the magnet with respect to the shift stroke changes, so that the magnets of each magnet in the displacement member are previously moved according to the meshing stroke of the transmission gear inside the transmission. If the position is adjusted, each magnet moves to a position facing each magnetic detection element with respect to the shift stroke, and the shift position can be properly detected.

As a result, by setting various displacement members in which the magnet position is changed for each transmission, the position switch can be shared and the manufacturing cost can be reduced. Further, in such a configuration, there is no fear that the shift force transmitted in the transmission will change.

[0016]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. First, an outline of an embodiment in which the position detecting device of the present invention is applied to a shift system of a transmission will be described with reference to FIG. In the figure, the shift outer lever 3 connected to the actuating shaft 1a of the shift actuator 1 swings, and the shift lever 4 is rotated via the shift inner shaft 2, so that the shift lever 4 becomes one of the shifters 5. Move to move the gear.

Here, a shift holder 2 as a component of a shift system that moves in accordance with a shift operation is provided with a magnet holder 8 as a displacement member that swings integrally with the shaft 2, and the magnet Magnets 11, 12, and 13 are attached to the holder 8 at a plurality of different positions, respectively. The magnets 11, 12 and 13 are provided at positions close to the magnet holder 8 so as to correspond to the shift positions corresponding to the rotational positions of the shift inner shaft 2 and either magnet. A shift position switch 14 having a plurality of magnetic detection elements such as Hall elements for detecting the magnetism of the magnets 11, 12, 13 when the magnets 11, 12, 13 face each other is provided.

The configuration will be described in detail with reference to FIGS. In the housing 6 on the shift actuator side, one end of the shift outer lever 3 is connected and fixed to the end of the shift inner shaft 2 supported by the housing 7 on the remote control side. A coupling hole 3a is formed at the other end of the shift outer lever 3, and the end of the striker 5 coupled to the end of the operating shaft 1a of the shift actuator 1 is engaged in the coupling hole 3a. Then, the operation of the operating shaft 1a of the shift actuator 1 is transmitted to the shift outer lever 3 via the striker 5, the shift outer lever 3 swings, and the shift inner shaft 2 rotates.

On one end surface of the shift inner shaft 2, one end of a rectangular plate-shaped magnet holder 8 is fastened and fixed by a bolt 10. In this case, a knock pin 18 is provided on the joint surface between the tip end surface of the shift inner shaft 2 and the magnet holder 8 so that the magnet holder 8 can be positioned. Further, the bolt insertion hole 8a of the magnet holder 8 through which the bolt 10 is inserted is formed as an elongated hole, and the mounting position of the magnet holder 8 to the tip end surface of the shift inner shaft 2 will be finely adjusted, which will be described later. Fine adjustments such as the neutral position of the transmission can be made.

Magnets 11, 12, and 13 are attached to three positions on the outer surface of the magnet holder 8, respectively. The magnet 11 is for neutral position detection, the magnet 12 is for front shift position detection, and the magnet 13 is for rear shift position detection. An opening 19 is formed in a wall portion of the housing 6 on the shift actuator 1 side facing the magnet holder 8, and a position switch 14 is penetratingly supported in the opening 19 and fixedly attached to the housing 6 by a bolt 20. To be done. The position switch 14 is arranged so that its tip end surface faces the end surface of the magnet holder 8 on the magnet mounting side with a minute gap therebetween.

At the tip of the position switch 14, three Hall elements 15, 16, 17 as magnetic detection elements are provided. Here, the arrangement of the magnets 11, 12, 13 and the Hall elements 15, 16, 17 will be described. First, the hall elements 15, 16 and 17 are arranged in parallel in the vertical direction. The neutral position detecting magnet 11 is located at a position facing the uppermost hall element 15 when the magnet holder 8 is located at the position A in FIG. 4 when the shift actuator 1 is in the neutral position operating state. Will be placed. Further, the front shift position detecting magnet 12 faces the hall element 16 in the middle portion when the magnet holder 8 is located at the position B in the figure when the shift actuator 1 is in the operating state of the front shift position. It is placed at the position. Further, the rear shift position detecting magnet 13 faces the lowermost Hall element 17 when the shift holder 1 is in the rear shift position and the magnet holder 8 is located at the position C in the figure. Placed in position.

In this configuration, when the actuator 1 is operated based on the gear shift operation, the shift outer lever 3 swings and the shift inner shaft 2 rotates, so that the magnet holder 8 swings. As a result, the positions of the respective magnets 11, 12, 13 attached to the magnet holder 8 change, and for example, when the shift actuator 1 is in the operation position of the previous shift position, the magnet holder 8 is moved to the B position in the figure. At the position, the front shift position detecting magnet 12 faces the Hall element 16 in the middle portion, and the voltage or resistance value of the Hall element 16 changes, the front shift position is detected, and this detection signal is output. To be done. The shift gear position is detected based on the detection signal of the previous shift position and the select position detection signal output from the select position detection device provided in the selection system, which is not described in the above embodiment.

According to this structure, the same position switch 14 can be provided in another transmission in which the transmission gears have different meshing strokes, and the same position switch 14 can be provided for each transmission. That is, by changing the positions of the magnets 11, 12, and 13 in the magnet holder 8, the moving positions of the magnets 11, 12, and 13 with respect to the stroke of the actuator 1 are changed, so that the gears in the transmission mesh with each other in advance. If the positions of the magnets 11, 12, 13 in the magnet holder 8 are adjusted according to the stroke, the magnets 11, 12, 13 face the Hall elements 15, 16, 17 with respect to the stroke of the actuator 1. You can move to the position where you want to shift and detect the shift position properly.

Therefore, by setting various magnet holders 8 whose magnets 11, 12, and 13 are changed in position for each transmission, the position switch 14 can be shared and the manufacturing cost can be reduced. Can be planned. Further, in such a configuration, there is no fear that the shift force transmitted in the transmission will change. In addition, at the position where the outer lever rotates like this, a problem occurs when the conventional position switches using a single magnet are arranged linearly in the lateral direction, that is, because the magnet rotates, The position of the magnet and the position of the position switch do not match during the shift, and there is a slight deviation, so the situation in which accurate gear position detection is not possible does not occur.

In the above embodiment, the magnet holder 8 is attached to the tip end surface of the shift inner shaft 2 and the position switch 14 is supported through the housing 6 on the shift actuator 1 side, but as shown in FIG. Also, even if the magnet holder 8 is attached to the rear surface of the shift outer lever 3 engaging with the striker 5 with the bolts 21, the position switch 14 is supported through the opening 7a of the housing 7 on the remote control side. good.

In this case, when the actuator 1 is operated based on the shift operation, the shift outer lever 3 swings, so that the magnet holder 8 swings. As a result, the positions of the magnets 11, 12, and 13 mounted on the magnet holder 8 change. Next, an outline of an embodiment in which the position detection device of the present invention is applied to a transmission select system will be described with reference to FIGS.

In the select system, the striker 23 connected to the operation shaft 22a of the select actuator 22 swings the select outer lever and slides the shift lever, so that the shift lever engages with one of the shifters. Then, the select operation is performed. Here, in the housing 24 of the select actuator 22, the striker 23 is connected and fixed to the operating shaft 22a supported by the housing 24. The striker 23 is engaged with a select outer lever (not shown).

The magnet holder 8 is fastened and fixed to the striker 23 with bolts 25. Magnets 26 are attached to three positions on the outer surface of the magnet holder 8, respectively. An opening 24a is formed in a wall portion of the housing 24 facing the magnet holder 8, and the select position switch 14 is penetratingly supported in the opening 24a. In this case, the select position switch 14 is fastened to the mounting plate 27 with bolts 28, and the mounting plate 27 is fastened to the housing 24 with bolts 29.

At the tip of the position switch 14, three Hall elements 14, 15, 16 are provided as in the previous embodiment. In such a configuration, when the actuator 22 is operated based on the gear shift operation, the striker 23 moves, so that the magnet holder 8 moves. As a result, the position of each magnet 26 mounted on the magnet holder 8 changes, the select position is detected, and this detection signal is output.

The select type position device having such a configuration is different from the shift type shift position device described in the above embodiment in that a shift type shift position device is used by using a magnet holder having a different number and arrangement of magnets. A similar position switch can be provided, and parts can be shared. Although the present invention has been described with reference to the specific embodiments as described above, the present invention is not limited to this, and is attached to the present invention by a person skilled in the art. It should be noted that various changes and modifications can be made without departing from the scope of claims for utility model registration.

[0031]

[Effect of the device]

 As described above, the present invention is provided with a displacement member having a plurality of magnets attached to a transmission component that moves in accordance with a gear shift operation, and corresponds to a position corresponding to the operating position of the component. Since a position switch equipped with a plurality of magnetic detection elements that detect the magnetism of the magnet by facing each other's magnets is provided, various magnet holders with different magnet positions are set for each transmission. Thus, for example, the same position switch can be provided in another transmission in which the transmission gears have different meshing strokes, the position switch can be shared, and the manufacturing cost can be reduced. The practical effect is great.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a position detecting device in a transmission according to the present invention.

FIG. 2 is a side sectional view showing the details of the embodiment.

FIG. 3 is a front sectional view showing details of the embodiment.

FIG. 4 is a front view for explaining the positional relationship between the magnet and the Hall element in the same embodiment.

FIG. 5 is a side sectional view of another embodiment.

FIG. 6 is a plan sectional view of still another embodiment.

FIG. 7 is a front sectional view of still another embodiment.

FIG. 8 is a side sectional view of still another embodiment.

FIG. 9 is a plan sectional view showing a transmission operating mechanism.

FIG. 10 is a front sectional view showing a transmission operation mechanism.

FIG. 11 is a schematic diagram showing an example of a conventional position detection device.

FIG. 12 is a schematic view showing another example of a conventional position detection device.

[Explanation of symbols]

 2 shift inner shaft 3 shift outer lever 8 magnet holder 11 magnet 12 magnet 13 magnet 14 position switch 15 hall element 16 hall element 17 hall element 23 striker 26 magnet

Claims (1)

[Scope of utility model registration request] 1. A displacement member, which is attached to a transmission component that moves in accordance with a gear shift operation, and that is displaced in position as the component moves, magnets that are attached to a plurality of different positions of the displacement member, and the displacement member. A plurality of magnetic detectors which are provided in a position close to the respective magnets corresponding to the respective magnets, and one of the magnets faces the position corresponding to the operating position of the component to detect the magnetism of the magnets. A position detection device in a transmission, comprising: a position switch having an element.