JP2963597B2 - Select position detection mechanism for automatic transmission - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a select position detecting mechanism for an automatic transmission, and more particularly to an automatic transmission for electrically detecting an operation position of a shift lever for selecting one of shift positions of the automatic transmission. The present invention relates to a select position detecting mechanism.

[0002]

2. Description of the Related Art A conventional example of a select position detecting mechanism for an automatic transmission is disclosed in JP-B-63-4176.
No. 8 discloses this.

As shown in FIG. 4, a select position detecting mechanism for an automatic transmission includes a position plate 70.
An electric contact 74 provided radially outward of the engagement surface 70A of the shift lever 72 with respect to the rotation center of the shift lever 72, and an engagement surface 70A of the position plate 70 interlocked with the shift lever 72.
An electrical contact 78 provided on a pin 76 that abuts and engages with
The electric contact 74 and the electric contact 78 come into contact with each other to detect the operating position of the shift lever 72.

[0004]

However, in general, the shift position of the shift lever is not determined by the shift lever alone except for the N position. That is, as shown in FIG. 5, the shift lever 72 is connected to the transmission 82 by the connecting rod 80, and the operation position of the shift lever 72 is determined by the moderation only on the transmission 82 side. .

Therefore, in the automatic transmission select position detecting mechanism, the moderation is on the side of the transmission 82, and the electric contact 78 provided on the shift lever portion connected to the transmission 82 by the connecting rod 80; 70 and the electrical contact 74 provided on the shift lever 7.
2 is detected.
For this reason, in order to reliably detect each select position, an electrical contact 74 provided at each select position is considered in consideration of a connection error between the shift lever 72 and the transmission 82 and the like.
The contact area needs to be widened. In other words, the specific accuracy of each select position is low. Also, in a vehicle such as an electric vehicle that drives a vehicle motor directly with a shift lever select position signal, such as a recent electric vehicle, a high select position detection accuracy is required, so that the automatic transmission select position detection mechanism is difficult to use. .

The present invention has been made in consideration of the above circumstances, and has as its object to provide a select position detecting mechanism for an automatic transmission that can detect a select position of a shift lever with high accuracy.

[0007]

Select position detecting mechanism for an automatic transmission according to the present invention, in order to solve the problem] has a recess in a portion corresponding to the select position located provided on the plate body to be fixed to the vehicle body, a shift lever Located on the side of
And moderation concavo-convex portion which, and moderation roller moving along the moderation concave-convex portion provided on the side of the shift lever, the detent rollers provided in each recess of the detent concave-convex portion enters into the recess And a select position detecting means actuated by the moderating roller in some cases.

[0008]

The select position detecting mechanism for an automatic transmission according to the present invention, the detent rollers provided on the side of the shift lever, a plate body fixed to the vehicle body side shift lever
When the robot moves along the moderation unevenness disposed on the side of the cursor and enters the recess at the position corresponding to each select position, each mode selector roller activates each select position detecting means. Therefore, since the position of each select position of the shift lever is reliably determined only by the shift lever side, it is not necessary to widen the contact range of the electric contact as in the conventional structure, and the select position of the shift lever can be detected with high accuracy. Can be. Also, beside the shift lever
The moderation roller provided on the
Moderation unevenness arranged on the side of the shift lever of the main body
Shift lever.
Select position detection means is disposed below the axis in the axial direction.
There is no need to secure space for
It is not restricted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a select position detecting mechanism for an automatic transmission according to the present invention will be described with reference to FIGS.

The vehicle of this embodiment is an electric vehicle in which a vehicle motor is directly driven by a shift lever select position signal.

As shown in FIG. 3, a pair of brackets 10 and 12 fixed to the floor of the vehicle body rotatably support a rotating shaft 14 with bolts and nuts (not shown). , A lower end 16A of the shift lever 16 is fixed.

As shown in FIG. 1, this shift lever 1
A knob (not shown) is fixed to the upper end of 6.
By gripping the knob, the shift lever 16 swings in the clockwise direction in FIG. 1 (direction of arrow A in FIG. 1) and the counterclockwise direction in FIG. 1 (direction of arrow B in FIG. 1).

As shown in FIG. 2, a projection 18 is formed on the outer periphery of the shift lever 16. This projection 18
A moderating plate 22 is attached to a surface 18A on the side of the rotating shaft 14 via an elastically deformable urging member 20 such as rubber, a leaf spring, or the like.
Thus, it is urged in the direction of the rotating shaft 14 (the direction of arrow C in FIG. 2). The moderation plate 22 is U-shaped,
A moderating roller 24 is rotatably mounted on the opening by a shaft 26. The urging direction of the moderation roller 24 (FIG. 2)
(In the direction of arrow C), a select position detecting switch 28 as a select position detecting means is disposed.

As shown in FIG. 1, the select position detecting switch 28 is fixed to a resin plate main body 30, and the resin plate main body 30 is fixed to a floor of a vehicle body by a bracket (not shown). The resin plate body 30 has a fan shape having an arc-shaped sliding surface 31 on which the roller 24 of the moderation plate 22 slides.
A moderation uneven portion 32 is integrally formed on the sliding surface 31. Also, the recesses 32A, 32 of the moderation unevenness portion 32
B, 32C, 32D, 32E, and 32F correspond to shift positions P, R, N, D, 2, and L, respectively.

The select position detection switch 28 is
The resin plate body 30 has a fan shape slightly smaller than the resin plate body 30, and the recesses 32 </ b> B, 32 </ b> C, 32
Push buttons 28 on the parts corresponding to D and 32E
A, 28B, 28C, 28D protrude. These push buttons 28A, 28B, 28C, 28D
Each head has a respective recess 32B, as shown in phantom in FIG.
32C, 32D, 32E, and push buttons 28A, 28B, 28C, 28D when the moderation roller 24 enters each of the recesses 32B, 32C, 32D, 32E.
Is pressed by the moderation roller 24 to be in an operation state (a state shown by a solid line in FIG. 1).

For example, when the moderation roller 24 enters the concave portion 32B corresponding to the shift position R, the push button 28A of the select position detection switch 28 is pressed, and the push button 28A is activated, and the vehicle motor is turned on. In the direction in which the vehicle reverses.

Next, the operation of this embodiment will be described. In the select position detecting mechanism for an automatic transmission according to the present embodiment, when the shift lever 16 is swung in the directions of arrows A and B in FIG. 1, the moderation roller 24 provided on the shift lever 16 is fixed to the vehicle body side. The resin plate 30 moves along the moderation irregularities 32 of the resin plate body 30. In this case, the detent plate 22 is urged in the direction of arrow C in FIG. 1 by the urging member 20, and thus the detent roller 24 is moved to the position corresponding to the select position P, R, N, D, 2, L. Recesses 32A, 32B, 32C, 32D, 32E, 32F
When the vehicle enters the recesses 32B, 32C, 32D, and 32E of the portions corresponding to the select position positions R, N, D, and 2, the select position detection switch 28
Push buttons 28A, 28B, 28C, 28D.

For example, when the moderation roller 24 enters the concave portion 32B at the position corresponding to the select position R, the moderation roller 24 presses the push button 28A of the select position detection switch 28 and operates the push button 28A. In this state, the vehicle motor is driven in the direction in which the vehicle reverses.

As described above, in the select position detecting mechanism for an automatic transmission according to the present embodiment, since the respective select position positions of the shift lever 16 are reliably determined only on the shift lever side, the contact range of the electric contact is reduced as in the conventional structure. There is no need to widen the position, and the select position of the shift lever can be detected with high accuracy. Also, the side of the shift lever 16
Moderation roller 24 is fixed to the vehicle body side
Arranged on the side of the shift lever of the resin plate body 30
It is configured to move along the moderation irregularities 32.
Select the positive position below the shift lever 16 in the axial direction.
Space for installing the switch 28
It is not necessary and the degree of freedom of design is not greatly restricted.
No.

In this embodiment, an example is described in which the select position detecting mechanism for an automatic transmission of the present invention is applied to an electric vehicle in which a vehicle motor is directly driven by a select position signal of a shift lever. The automatic transmission select position detection mechanism is also applicable to a case where a select position of a shift lever is detected with high accuracy in a vehicle using a transmission.

In this embodiment, a push button type select position detecting switch 28 is used as the select position detecting means. However, instead of such a mechanical type switch, a select sensor using an optical sensor or a magnetic sensor is used. A position detection switch may be configured.

[0022]

The select position detecting mechanism for an automatic transmission according to the present invention has a concave portion provided at a portion corresponding to each select position position provided on a plate body fixed to the vehicle body side, and provided at a side of the shift lever. The moderation unevenness provided, the moderation roller provided on the side of the shift lever and moving along the moderation unevenness, and the moderation roller provided in each recess of the moderation unevenness enters the recess. Since the configuration includes the select position detecting means operated by the detent roller, there is an excellent effect that the select position of the shift lever can be detected with high accuracy. Also, the freedom of design is not greatly restricted.
It has an excellent effect.

[Brief description of the drawings]

FIG. 1 is a side view showing a select position detecting mechanism for an automatic transmission according to one embodiment of the present invention.

FIG. 2 is a plan view showing a select position detecting mechanism for an automatic transmission according to one embodiment of the present invention.

FIG. 3 is a front view showing a select position detecting mechanism for an automatic transmission according to one embodiment of the present invention.

FIG. 4 is a schematic side view showing a select position detecting mechanism for an automatic transmission according to a conventional example.

FIG. 5 is a schematic side view showing a select position detecting mechanism for an automatic transmission according to a conventional example.

[Explanation of symbols]

Reference Signs List 14 Rotation axis 16 Shift lever 22 Moderation plate 24 Moderation roller 28 Select position detection switch (select position detection means) 28A Push button 28B Push button 28C Push button 28D Push button 30 Resin plate body 32 Moderation irregularity 32B Recess 32C Recess 32D Recess 32E recess

Claims (1)

(57) [Claims] 1. A moderation concave / convex portion provided on a plate body fixed to a vehicle body side, corresponding to each select position, provided on a side of a shift lever, and a side of the shift lever . A moderation roller provided on one side and moving along the moderation unevenness portion, and a select position detection provided in each recess of the moderation unevenness portion and operated by the moderation roller when the moderation roller enters the recess. Means for detecting a select position for an automatic transmission.