JP2590824Y2 - Transmission operation device position detection device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position detecting device for detecting a stroke position in an operation direction (axial direction) of a speed change operation shaft (selection operation shaft or shift operation shaft) of a transmission operation device.

[0002]

2. Description of the Related Art A transmission operating device includes a select operating shaft and a shift operating shaft. In order to detect that these shift operating shafts are located at predetermined select and shift positions, respectively. A position detection device is provided.

Conventionally, as this kind of position detecting device, the one shown in FIGS. 5 and 6 has already been proposed by the present applicant. (Reference number P submitted on April 22, 1992
FIG. 9 shows the position detecting device 10.
5 shows a state in which the shift operation actuator 2 of the transmission operating device having the above-described position is at a substantially center position (neutral position) of the entire operation stroke.

The shift operation actuator 2 includes:
A hollow shift operation shaft 4 is slidably disposed in the housing 3. An operation shaft drive unit 5 coupled to the housing 3 supplies and discharges fluid, for example, compressed air, through a power piston. Te, the operating shaft 4 is forward movement or backward movement.

[0005] A striker 6 for taking out an output for shifting the transmission is integrally fixed to the shift operation shaft 4, and an operation output from the striker 6 is transmitted to a transmission lever 7. The shift operation rod 8 of the transmission (not shown) is operated.

The position detecting device 10 provided in the same housing 3 in which the transmission lever 7 is accommodated.
Is composed of a detection lever 11, a position transmission unit 12, a magnet unit 13, and a position switch sensor 14.

That is, one end of the detection lever 11 is
At one point on the side of the housing 3, it is swingably fixed by a fixed pin 15 which is prevented from coming off, and at the other end, a flat engaging surface 16 parallel to the axis of the lever 11 and facing each other.
a, 16b are formed, and the recesses 17 are formed.
The engagement portion 12a at one end of the position transmitting portion 12 protruding from the striker 6 is disposed so as to engage in a sliding contact state.

As shown in FIGS. 5 and 6, the detection lever 11 has a bolt 13a and a permanent magnet 13b.
The magnet portion 13 made of
Is screwed and disposed at an appropriate distance from the bolt 13a. The bolt 13a is made of, for example, a non-magnetic material such as an aluminum-based material, and has one permanent magnet 13b embedded in the upper surface of the head. The upper surface of the magnet 13b is exposed on the upper surface of the head of the bolt 13a.

The position switch sensor 14 is mounted on the housing 3, and the magnet 13 b of the magnet 13 on the detection lever 11 reciprocates around the center 0 of the fixed pin 15. In the sensor 14, three magneto-electric conversion elements 14a are arranged in a line at equal intervals.

By setting the point of engagement between the detection lever 11 and the position transmitting portion 12 at an appropriate position, the center of the fixing pin 15 of the detection lever 11
If the ratio of the distance from the (fixed center) to the magnet 13b and the distance from the center 0 of the fixed pin 15 to the action point is set to an appropriate value, for example, even when the stroke of the shift operation shaft 4 is large, By reducing the stroke, the magnet 1
The stroke at the position 3b can be the same as the stroke of the other shift or select operation axis.

In this manner, the magnet 1 of the magnet portion 13
When the position 3b comes to a position corresponding to each magneto-electric conversion element 14a of the position switch sensor 14,
a outputs a predetermined detection signal (for example, an ON signal) to a controller (not shown) via a coaxial cable (not shown),
The controller controls the supply and discharge of compressed air to and from the operation shaft drive unit 5 to accurately drive the shift operation shaft 4 to a predetermined position.

It should be noted that 3 in the position switch sensor 14
The position of the element 14a arranged at the center of the magnetoelectric conversion elements 14a is usually set to the neutral position.

Next, the operation of the position detecting device 10 of the transmission operating device will be described. When the select operation is completed by the operation of a change lever (not shown) and the shift operation is started next, the compression of the shift operation actuator 2 to the operation shaft drive unit 5 based on a control signal from a controller (not shown) is performed. Air is supplied and exhausted, and the speed change operation shaft 4 is supplied.
Is operated and moved by the operation shaft driving unit 5. Along with this, the other end of the engaged detection lever 11 moves via a position transmitting portion 12 protruding from the striker 6 of the operation shaft 4, and the magnet 13b on the detection lever 11 The position switch sensor 14 moves to a position facing a predetermined magnetoelectric conversion element 14a.

At this time, a shift position detection signal (for example, an ON signal) is output from the magnetoelectric conversion element 14a to the controller, whereby it is detected that the shift operation shaft 4 has been operated to a predetermined shift position. Thus, the compressed air supplied to the operation shaft driving unit 5 is exhausted by the control signal of the controller (not shown), and the shift operation is completed.

As described above, according to the position detecting device 10, even if the stroke of the shift operating shaft 4, that is, the stroke of the shift operating shaft 4 varies depending on the type of vehicle, the position of the detecting lever 11 and the position transmitting unit 12 can be changed. By setting the action point at an appropriate position, the stroke can be made the same as the stroke (13 mm) of another shift or the select operation axis at a fixed ratio determined by the action point. Therefore, regardless of the type of the transmission, the common position switch sensor 14 can be employed.

[0016]

However, in the above-described position detecting device of the conventional transmission operating device, the engaging portion between the detecting lever and the position transmitting portion has a play (generally loose play). ), The speed change operation shaft 4
The relative position between the magnet unit 13 on the detection lever 11 for transmitting the position and the magnetoelectric conversion element 14a of the position switch sensor 14 fluctuates, and the detection of the stroke position of the operation shaft 4 becomes unstable. there were.

The detection lever 11 and the lever 1
When there is play in the axial direction between the fixed pin 15 and the fixed pin 15 for swingably fixing one end of the fixed lever 15, particularly when the fixed pin 15 is attached, the magnet 13 on the detection lever 11 and the magnetoelectric conversion There is also a problem that the clearance with the element 14a fluctuates, thereby fluctuating the detection sensitivity, and as described above, the detection of the stroke position of the operation shaft 4 becomes unstable.

The present invention has been made in view of such a point.
An object of the present invention is to provide a position detecting device for a transmission operating device which solves the above-mentioned problem and stabilizes the detection of the stroke position of a shift operating shaft.

[0019]

According to an aspect of the present invention, there is provided a transmission operating device comprising:
The other end of the detection lever, one end of which is swingably fixed by a fixing member, is engaged with one end of a position transmission unit fixedly provided on the speed change operation shaft side, and a magnet is fixed on the detection lever, A plurality of magneto-electric conversion elements are arranged on the housing side in correspondence with the path on which the magnet on the detection lever reciprocates with the reciprocation of the operation shaft, and the position of the magnet is determined by the magneto-electric conversion elements. The position detecting device of the transmission operating device that detects the stroke position of the operating shaft by detecting the position is as follows.

The other end of the detection lever to be engaged and the position
In order to always contact one end of the position transmission part with each other,
An elastic member on which an urging force acts is disposed between the detection lever and the position transmitting section .

[0021] Then, the elastic member, the detection lever
And a spring support formed on one side of the detection lever.
A spring arranged on the other side of the gearshift operating shaft;
The spring is provided between the support and the support .

The other end of the detection lever to be engaged is
The one end of the position transmitting section is always in contact with each other.
Therefore, a torsion bar that is disposed on the fixing member and that applies an urging force between the detection lever and the housing.
It is characterized by arranging a spring .

Also, the guide in which the fixing member has a step portion
A bolt with a shaft, said stepped portion being connected to the housing
Side, and press the detection lever against the step.
The elastic member is disposed on the guide shaft of the bolt .

[0024] Then, the one end of the detection lever, and fixing the tubular member to be fitted rotatably to the guide shaft of the guide shaft bolt, through the tubular member, the guide shaft
It is characterized in that the detection lever is pressed against the stepped portion of the bolt .

The housing may further include the magnetoelectric conversion element.
A slider in which the detection lever slides parallel to the position detection surface of the
An elastic member that forms a moving surface and presses the detection lever against the sliding surface;
A sex member is provided on the fixing member .

[0026]

Since the present invention is constructed as described above, there is no play at the engagement portion between the detection lever and the position transmitting portion, and the movement of the shift operation shaft is accurately transmitted to the detection lever. . In addition, since the engagement between the detection lever and the position transmitting portion is always the same at any detection position, the variation in the detection position due to the variation in the processing dimensions of the components is reduced.

In addition, there is no play in the axial direction of the fixing member between the fixing member and the detection lever, and the clearance between the magnet on the detection lever and the magnetoelectric conversion element is made constant.

In this manner, the detection of the stroke position of the shift operation shaft is stabilized.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be illustratively described in detail below with reference to the drawings. (First Embodiment) FIGS. 1 and 2 show a first embodiment of a position detecting device of a transmission operating device according to the present invention. FIG. 1 is a partial cross-sectional view showing the configuration, and FIG. In the sectional view taken along the line II-II, the same members as those in FIGS. 5 and 6 are denoted by the same reference numerals, and the description thereof will be omitted.

In FIG. 1 and FIG.
And forming integrally with the detection lever 11 the spring support 21 manner on one side of the 1, the position transmission section base 22 of the striker 6 in the speed change operation shaft 4, the other of said detection lever
On the side of the side surface, a spring support portion 24 on which the other spring support 23 standing upright in parallel with the position transmitting portion 12 is formed,
Attach and fix with two screws 25.

Thereafter, the spring 26 is extended between the two spring columns 21 and 23 and is disposed in parallel with the axial direction of the operation shaft 4. As a result, play of the engaging portion between the detection lever 11 and the position transmitting portion 12 is eliminated.

(Second Embodiment) FIG. 3 is a cross-sectional view corresponding to FIG. 6, showing a second embodiment of the present invention. In FIG. 3, a bolt 31 having a guide shaft 31a is vertically screwed into the housing 3 instead of the fixing pin 15 for swingably fixing one end of the detection lever 11 to the housing 3 so as to penetrate the housing 3 from outside. Install and fix.

On the other hand, at one end of the detection lever 11,
A pipe member 32 rotatably fitted to the guide shaft 31a of the bolt 31 with a guide shaft is fixedly fitted to the guide shaft 31a of the bolt 31.

Then, a tube member 32 is provided together with the detection lever 11 by a spring receiving plate 33 and a pressing spring 34 supported by a retainer provided at one end of the guide shaft 31a.
To the housing 3 side to bring the end of the tube member 32 into contact with the step member 31b of the bolt 31 with the guide shaft,
The one end of the detection lever 11 is configured to eliminate play in the axial direction of the guide shaft 31a.

Next, a torsion spring 3 is provided between the bolt 31 and the detection lever 11 outside the pipe member 32.
5 is provided, and the urging force of the torsion spring 35 is applied in one direction in which the detection lever 11 swings, so that the play of the engaging portion between the detection lever 11 and the position transmitting portion 12 is reduced. I'm trying to get rid of it.

In this embodiment, at the same time, the length of the tube member 32 fixed to the one end of the detection lever 11 is set to be equal to the length of each of the magneto-electric conversion elements 14a to which the magnet 13b disposed on the detection lever 11 faces. It is determined to have a predetermined clearance.

For this reason, the detection lever 11 receives an urging force in the axial direction of the bolt 31 with the guide shaft by the pressing spring 34, and the bolt 31 and the detection lever 1 are received.
1 to eliminate play in the axial direction of the bolt 31.

(Third Embodiment) FIG. 4 shows a third embodiment of the present invention, and is a sectional view of a main part corresponding to the periphery of a bolt 31 with a guide shaft in FIG.

In FIG. 4, instead of the bolt 31 with a guide shaft shown in FIG. 3 for swingably fixing one end of the detection lever 11 to the housing 3 side, a fixing bolt 41 is screwed vertically and fixed. A screw hole 42 with a step hole is formed in the housing 3 side.

The stepped screw hole 42 of the housing 3
, The detection lever 11 swings with the housing 3 as the detection lever 11 swings, and each of the magnetoelectric conversion elements 14a
The sliding surface 44 parallel to the detection surface 43 of the
On the side.

At the same time, the sliding surface 44 is determined such that a predetermined clearance is provided between each of the magnetoelectric conversion elements 14a, on which the magnet 13b provided on the detection lever 11 sliding on the surface 44 is opposed, and the magnet 13b. Have been.

The detection lever 11 has, at its one end,
Step holes 42 of the fixing bolt 41 and the screw holes 42 with step holes
A pipe member 45 that fits rotatably is fixed between the housing 3 and the fixing member 41, and is fixed to the housing 3 side via a pressing spring 46 by the fixing bolt 41.

As described above, since the pressing spring 46 is disposed between the fixing bolt 41 and the detecting lever 11, the detecting lever 11 moves the pressing spring 46 in the axial direction of the fixing bolt 41. Upon receiving the urging force, the play of the fixing bolt 41 in the axial direction is eliminated between the fixing bolt 41 and the sliding surface 44 of the housing 3.

Note that the technique of the present invention is not limited to the technique in the above-described embodiment, but may be implemented by means of another embodiment having a similar function. Various changes and additions are possible.

[0045]

As is apparent from the above description, according to the position detecting device of the transmission operating device of the present invention, the play of the engaging portion between the detecting lever and the position transmitting portion is eliminated, and the detecting lever is used. In addition, the movement of the shift operation shaft is accurately transmitted by eliminating the variation of the detection position due to the variation of the processing dimension of the position transmitting unit, or the axial direction of the fixed member between the fixed member and the detection lever. The gap between the magnet and the magneto-electric conversion element was kept constant by eliminating the play of
The detection of the stroke position of the shift operation shaft can be stabilized.

At the same time, the accuracy of position detection and its reproducibility are improved, and accurate transmission operation can be performed.

[Brief description of the drawings]

FIG. 1 is a first view of a position detecting device of a transmission operating device according to the present invention;
FIG. 3 is a partial cross-sectional view showing the configuration in an example.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view of a second embodiment of the present invention, corresponding to FIG. 6;

FIG. 4 is a cross-sectional view of a main part of a third embodiment of the present invention, corresponding to the vicinity of the bolt 31 with a guide shaft of FIG. 3;

FIG. 5 is a partial cross-sectional view showing a configuration of a conventional position detecting device of a transmission operating device.

6 is a sectional view taken along line VI-VI of FIG.

[Explanation of symbols]

 Reference Signs List 2 actuator for shift operation 3 housing 4 operation shaft for speed change 6 striker 10 position detection device 11 detection lever 12 position transmission lever 13 magnet unit 13b magnet 14a magnetoelectric conversion element 15 fixing pin 21,23 spring support 26 spring 31 bolt with guide shaft 31a Guide shaft 31b Step 32 Pipe member 33 Spring receiving plate 34, 46 Press spring 35 Torsion spring 41 Fixing bolt 43 Detection surface 44 Sliding surface

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16H 59/10-61/12 F16H 61/16-61/24 F16H 63/40-63/48

Claims (6)

(57) [Scope of request for utility model registration] 1. The other end of a detection lever, one end of which is swingably fixed to a housing side of a transmission operating device by a fixing member, is connected to one end of a position transmitting portion fixedly mounted on a shift operation shaft side. And a magnet is fixed on the detection lever, and a plurality of magneto-electric conversion elements are arranged on the housing side corresponding to a path along which the magnet on the detection lever reciprocates as the operation shaft reciprocates. It was set, by detecting the position of the magnet in the magnetic-electric conversion element, the other end and the position of the detection lever in the position detecting apparatus for a transmission operation device, to engage for detecting a stroke position of the operating shaft One of the transmission units
The end is always in contact with each other.
Position detecting apparatus for a transmission operating device, characterized in that between the position transmission section, to arrange the elastic member biasing force acts. 2. The detection device according to claim 2, wherein the elastic member is one of the detection levers .
And a spring strut formed on the side of the
On the side surface side, a spring strut arranged on the shift operation shaft,
2. A spring disposed between the springs.
3. The position detecting device for a transmission operating device according to claim 1. 3. The transmission operating device is fixed to a housing side.
Other than a detection lever whose one end is swingably fixed by a member
End to one end of the position transmission unit fixed to the gearshift operation shaft side.
Engage and fix the magnet on the detection lever
Then, the reciprocating motion of the operation shaft causes the
Multiple magneto-electric transducers corresponding to the path in which the magnet reciprocates
Is disposed on the housing side, and the magnetoelectric conversion element
By detecting the position of the magnet,
The position detection device of the transmission operating device that detects the
And the other end of the detection lever to be engaged with one of the position transmitting portions.
In order to keep the ends in contact with each other at all times, they are arranged on the fixing member.
And a torsion spring for applying an urging force is disposed between the detection lever and the housing. 4. The other end of a detection lever, one end of which is swingably fixed to a housing side of a transmission operating device by a fixing member, is connected to one end of a position transmitting portion fixedly mounted on a shift operation shaft side. And a magnet is fixed on the detection lever, and a plurality of magneto-electric conversion elements are arranged on the housing side corresponding to a path along which the magnet on the detection lever reciprocates as the operation shaft reciprocates. A position detecting device for a transmission operating device for detecting a stroke position of the operating shaft by detecting a position of the magnet with the magnetoelectric conversion element, wherein the fixing member has a guide shaft bolt having a stepped portion. In
And dispose the bolt so that the step is on the housing side.
An elastic member for pressing the detection lever on the step portion,
A position detecting device for a transmission operating device, which is disposed on a guide shaft of the bolt . Said one end of 5. Before Symbol detection lever, and fixing the tubular member to be fitted rotatably to the guide shaft of the guide shaft bolt, through the tubular member, said guide shaft with ball
5. The position detecting device of a transmission operating device according to claim 4 , wherein the detection lever is pressed against a step portion of a tilt . 6. A transmission operating device fixed to a housing side.
Other than a detection lever whose one end is swingably fixed by a member
End to one end of the position transmission unit fixed to the gearshift operation shaft side.
Engage and fix the magnet on the detection lever
Then, the reciprocating motion of the operation shaft causes the
Multiple magneto-electric transducers corresponding to the path in which the magnet reciprocates
Is disposed on the housing side, and the magnetoelectric conversion element
By detecting the position of the magnet,
The position detection device of the transmission operating device that detects the
And the housing is flat on the position detecting surface of the magnetoelectric conversion element.
Forming a sliding surface on which the detection lever slides,
An elastic member that presses the detection lever on the moving surface is fixed to the moving surface.
A position detecting device for a transmission operating device, which is disposed on a member .