JPH07332484A - Transmission operating device - Google Patents

Abstract

PURPOSE:To prevent the occurrence of erroneous setting by a method wherein a stopper wall corresponding to a pin is arranged to the end part on the housing body side of the guide groove, in a gear shift operation device wherein a guide groove is formed in a holder, a housing part is filled with a pin, and rotation of the holder is blocked. CONSTITUTION:A holder 21 is fitted in an operation rod 12 and a housing part 11b is mounted on a housing body 11a. A guide groove is formed in the outer peripheral surface of the holder 21, the housing part 11b is filled with a pin 26, the pin 26 fronts on a guide groove 22, and rotation of the holder 21 is blocked. A stopper wall 23 corresponding to the pin 26 is disposed to the end part of the housing body 11a of the guide groove 22. When the holder 21 is mounted in a direction opposite to the operation rod 12, in mounting of the housing part 11b, the pin 26 of the housing part 11b is collided with the stopper wall 23 of the holder 21 and the housing part 11b can not be mounted on the housing body 11a. This constitution eliminates a fear of erroneous setting occurring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission operating device, and more particularly to a structure of a position detecting means for an operating rod in a shift operating actuator or a select operating actuator.

[0002]

2. Description of the Related Art A remote-controlled transmission operating device is generally adopted in medium-sized and large-sized automobiles. This device is composed of a shift operation actuator and a select operation actuator.

FIG. 5 shows a shift operation actuator. In this actuator 1, a piston (not shown) arranged on the operation rod 2 is operated by a fluid, whereby the operation rod 2 is operated.

In this actuator 1, in order to confirm the shift position, as shown in FIG. 5, position detecting means 3 is formed at the end of the operating rod 2.

As shown in FIGS. 5 and 6, the position detecting means 3 includes three permanent magnet pieces A, B and C, which are the objects to be detected, installed at the end of the operating rod 2 and the operating rod. It is composed of three magnetic detection elements a, b, c, which are sensors arranged in the surrounding housing. And
The magnet pieces A, B, C and the magnetic detection elements a, b, c are
As shown in FIG. 6, they are arranged offset from each other in the direction perpendicular to the axis.

Further, in such an actuator 1,
The operation rod 2 may be rotated due to vibration or the like, and the magnet pieces A, B, and C may be rotated accordingly. Therefore, in this position detecting means 3, a cylindrical holder 4 is fitted to the end of the operation rod 2, the magnet pieces A, B, C are embedded in the holder 4, and a guide parallel to the axis is attached to the holder 4. The groove 6a is formed, and the pin 6 is planted in the housing 5.
By inserting the magnet pieces into the grooves 4a,
It prevents the rotation of.

[0007]

By the way, in the position detecting means 3, the holder 4 is operated by fitting the holder 4 to the end of the operating rod 2 and screwing the nuts 7 and 8 on the end. It is fastened to the rod 2, then the housing portion 5a is covered so as to cover the operation rod 2, and the housing portion 5a is fastened and assembled to the housing body 5b by the bolt 9.

However, in the actuator 1 provided with the position detecting means 3 having such a structure, the holder 4 can be assembled to the operating rod 2 in the reverse direction.

When the holder 4 is attached to the operating rod 2 in the opposite direction, as shown in FIG. 7, the magnet pieces A, B, C are used.
, The sensors a, b, and c are misaligned, and accurate position detection cannot be performed.

Further, as shown in FIG. 8, the holder 21 is provided with one as a position detecting means of the operating rod of the transmission operating device.
The two magnet pieces A are embedded and the housing portion 11
There is one in which three sensors a, b, and c are arranged in b. Even with such a position detecting means, the holder 21 is operated by the operation rod 1
If the second extension rod 13 is mounted in the opposite direction, the correct position may not be detected.

SUMMARY OF THE INVENTION An object of the present invention is to provide a transmission operating device which prevents the position detecting means from being erroneously assembled.

[0012]

In a transmission operating device according to claim 1 of the present invention, a holder having an object to be detected planted on its outer peripheral surface is fitted to the end portion of the operating rod, and its inner peripheral surface is fitted. The housing part where the sensor is arranged is attached to the housing main body so as to cover the holder, further, an axial guide groove is formed on the outer peripheral surface of the holder, and a pin is planted in the housing part. In a transmission operating device that faces the guide groove and prevents rotation of the holder, a stopper wall that opposes the pin is provided at an end of the guide groove that is located on the housing body side. There is.

Further, in the transmission operating device according to the second aspect of the present invention, a holder having a body to be detected planted on the outer peripheral surface is fitted to the end of the operating rod, and a sensor is arranged on the inner peripheral surface. In a transmission operating device in which the housing part is attached to the housing body so as to cover the holder,
An annular step having a small diameter is formed at the end of the operation rod, and an inwardly projecting annular wall is formed at the end of the holder, and the annular wall abuts the end wall of the annular step. The holder is prevented from moving.

[0014]

According to the transmission operating device of claim 1 of the present invention,
When the holder is attached to the operating rod in the opposite direction,
When mounting the housing part, the pins of the housing part hit the stopper walls of the holder and the housing part cannot be mounted on the housing body.

According to the transmission operating device of the second aspect of the present invention, even if the holder is mounted in the opposite direction to the operating rod, the annular wall of the holder hits the end wall of the annular step of the operating rod and the holder is moved. Cannot be attached to the operating rod.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a transmission operating device according to the present invention will be described below with reference to FIGS.

1 and 2 show a shift operating actuator 10 of a transmission operating device. The actuator 10 includes a housing body 11a and an operating rod 1
2 is slidably supported. The operation rod 12 has an extension rod 13 at its end.

The extension rod 13 has a male screw 1 on the peripheral surface of one end.
3a is formed, and the flange 13 is formed on the base of the male screw 13a.
b is formed, and a male screw 13c is further formed at the other end. The extension rod 13 has a male screw 13a screwed into a female screw 12a formed at the end of the operating rod 12, and the extension rod 13 is attached to the operating rod 12 by a pin 14 press-fitted into the flange 13b and the end of the operating rod 12. It is fixed.

The actuator 10 also has a housing portion 11b that covers the end of the operating rod 12. This housing part 11b has a flange 1 at the end.
Have five. And this housing portion 11b
Moves from the outside in the axial direction of the extension rod 13 to cover the extension rod 13 as shown in FIG. 1, and causes the flange 15 to abut the housing body 11a as shown in FIG. The housing portion 11b is fastened to the housing body 11a by.

In this actuator 10, as shown in FIG. 2, the position detecting means 2 for the operating rod 12 is provided between the housing portion 11b and the extension rod 13 of the operating rod 12.
0 is configured.

In this position detecting means 20, the extension rod 1
A permanent magnet is provided as a detected body on the third side, and a magnetic detection element is used as a sensor on the housing portion 11b side.

In this position detecting means 20, the extension rod 1
3, the holder 21 is fitted, and magnet pieces A, B, and C are planted on the outer peripheral surface of the holder 21 with appropriate intervals in the axial direction and offset in the direction perpendicular to the axis. .

A guide groove 22 extending in the axial direction is formed on the outer peripheral surface of the holder 21. A stopper wall 23 is formed at the end of the guide groove 22 on the housing body 11a side.

The holder 21 is provided with the stopper wall 2
3 is positioned on the back side, fitted to the extension rod 13, and the male screw 23c of the extension rod 13 is screwed with the nuts 24 and 25, whereby the extension rod 13 is held.

Further, in the position detecting means 20, the magnetic detecting elements a, b and c are arranged on the inner peripheral surface of the housing portion 11b. These magnetic detection elements a, b, c are arranged offset in the direction perpendicular to the axial direction corresponding to the magnet pieces A, B, C. The magnetic detection elements a, b, and c are connected to a controller (not shown). The magnet piece A is detected by the sensor a, the magnet piece B is detected by the sensor b, and the magnet piece C is detected by the sensor c.

A pin 26 is fixed to the housing portion 11b by a screw 27 with the tip portion 26a facing the inside.

Then, as shown in FIG. 2, when the housing portion 11b is attached to the housing body 11a, the tip end portion 26a of the pin 26 is attached to the holder 21.
The guide groove 22 is inserted.

In this actuator, the holder 21
Is attached to the extension rod 13 in the opposite direction as shown in FIG.
It is located on the tip side of 3. In this state, the housing part 1
When trying to attach 1b to the housing body 11a,
The pin 26 of the housing portion 11b hits the stopper wall 23, and the housing portion 11b cannot be moved closer to the housing body 11a. Therefore, the housing portion 11b cannot be attached to the housing body 11a.

FIG. 4 shows a second embodiment of the present invention.

In the first embodiment described above, when the holder 21 is mounted on the extension rod 13 in the opposite direction, the housing portion 11b cannot be attached to the housing body 11a, so that the holder 21 is erroneously assembled. Although it was prevented, in the second embodiment, even if the holder 21 is attached to the extension rod 13 in the opposite direction, it cannot be attached.

In the second embodiment, an annular step 28 having a small diameter is formed at the end of the extension rod 13, and an inwardly projecting annular wall 29 is formed at the end of the holder 21.

According to the second embodiment, even if the holder 21 is mounted on the extension rod 13 in the opposite direction, the annular wall 29 abuts against the end wall 28a of the annular step 28 of the extension rod 13, and the extension is further prevented. The holder 21 cannot be moved. Therefore, erroneous assembly of the holder 21 does not occur.
In the case of the second embodiment, the stopper wall 23 of the first embodiment is unnecessary.

In the above embodiment, the position detecting means of the shift operation actuator is shown, but it goes without saying that the present invention can be applied to the position detecting means of the select operation actuator.

[0034]

According to the transmission operating device of the first aspect of the present invention, when the holder is mounted in the reverse direction with respect to the operating rod, the pin of the housing portion is attached to the stopper wall of the holder when mounting the housing portion. Therefore, the housing part cannot be attached to the housing body. Therefore, there is no risk of incorrect assembly.

According to the transmission operating device of the second aspect of the present invention, even if the holder is mounted in the opposite direction to the operating rod, the annular wall of the holder hits the end wall of the annular step of the operating rod, The holder cannot be attached to the operating rod. Therefore, there is no risk of incorrect assembly.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of position detecting means for an operating rod in an actuator of a transmission operating device according to the present invention, showing a state before a housing portion is attached.

FIG. 2 is a sectional view showing a first embodiment of the position detecting means of the operating rod in the actuator of the transmission operating device according to the present invention, and showing a state in which the housing portion is attached.

FIG. 3 is a cross-sectional view showing a state in which a housing part is attached in a state in which a holder is attached to the operation rod in a reverse direction by the operation rod position detection means in the actuator of the transmission operation device according to the present invention. Is.

FIG. 4 is a sectional view showing a second embodiment of the position detecting means of the operating rod in the actuator of the transmission operating device according to the present invention.

FIG. 5 is a cross-sectional view showing a position detecting means of an operating rod in an actuator of a conventional transmission operating device.

FIG. 6 is a cross-sectional view showing a normal positional relationship between a detected object of a position detecting means of an operation rod and a sensor in an actuator of a conventional transmission operating device.

FIG. 7 is a cross-sectional view showing an abnormal positional relationship between a sensor and an object to be detected of position detecting means of an operating rod in an actuator of a conventional transmission operating device.

FIG. 8 is a sectional view showing another position detecting means in the conventional transmission operating device.

[Explanation of symbols]

 10 actuator 11a housing body 11b housing part 12 operation rod 13 extension rod 13b flange 13c male screw 15 flange 16 bolt 20 position detection means 21 holder 22 guide groove 23 stopper wall 24, 25 nut 26 pin 28 annular step 28a end wall 29 annular wall

Claims (2)

[Claims] 1. A housing body in which a holder having an object to be detected planted on an outer peripheral surface thereof is fitted to an end portion of an operation rod, and a housing portion having a sensor arranged on an inner peripheral surface covers the holder. And a guide groove in the axial direction is formed on the outer peripheral surface of the holder, and a pin is planted in the housing portion so that the pin faces the guide groove to prevent rotation of the holder. In the transmission operating device, a stopper wall that opposes the pin is provided at an end of the guide groove located on the housing body side. 2. A housing body in which a holder having an object to be detected planted on its outer peripheral surface is fitted to the end of the operation rod, and a housing portion having a sensor arranged on its inner peripheral surface covers the holder. In the transmission operating device attached to the above, an annular step having a small diameter is formed at the end of the operation rod, and an inwardly projecting annular wall is formed at the end of the holder. Is abutting against the end wall of the annular step so as to prevent the holder from advancing.