JPH0429157Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a shift operation device with a shift lock for an automatic transmission that makes it impossible to operate the shift lever if the brake is not operated when the shift lever is in the stop range. It is related to.

Conventional technology and its problems As a conventional gear shift operation device, for example,
-There is something like the one shown in Publication No. 185750.

However, according to such prior art, when the shift lever is operated in an attempt to shift in the locked state, the solenoid pin of the solenoid receives the input, which may cause the solenoid pin to deform and become inoperable. Furthermore, if the strength is improved to prevent deformation, the solenoid will become larger, resulting in problems such as increased cost, increased weight, and decreased freedom of layout.

Therefore, instead of directly regulating the displacement of the shift lever itself, it is now possible to indirectly control the shift lever operation by preventing the displacement of the position pin that engages with the position plate and regulates the shift lever operation. A regulatory configuration is proposed.

An example of such a shift lock mechanism is shown in FIGS. 6 and 7.

Reference numeral 1 in the figure is a shift lever that is operated to switch between a plurality of ranges, and a position pin 2 that protrudes to both sides is provided at the bottom of the shift lever. This position pin 2 is configured to be interlocked with a shift button 4 via a rod 3, and is connected to a first shift button 4 on one end side.
The protrusion 2a engages with the position plate 5.

Further, a cylindrical bush 6 that slides on the circumferential surface of the shift lever 1 is rotatably fitted to the lower part of the shift lever. As shown in FIG. 7, this bushing 6 has two grooves 6a and 6b that allow downward displacement of the first and second protrusions 2a and 2b on one end side and the other end side of the position pin 2. is bored, and the solenoid 7 provided on the shift lever 1
It is rotated by. When the brake is not operated and the shift lever 1 is in the parking range, the solenoid 7 rotates the bush 6 to a lock position where both protrusions 2a and 2b of the position pin 2 do not oppose the grooves 6a and 6b, and when the shift lever 1 is in the parking range. In this case, both protrusions 2
a, 2b are rotated to the unlocked position (the position shown in FIG. 7) where they face the grooves 6a, 6b.

However, if the bushing 6 is configured to surround the entire circumference of the shift lever 1 as described above, there will be a gap at least equal to the wall thickness of the bushing 6 between the shift lever 1 that supports the position pin 2 and the position plate 5. 1, the force applied to the supporting portion of the position pin 2 due to engagement with the position plate 5 is large, and the relative strength of the position pin is reduced compared to when this distance is short. It was hot.

Purpose of the invention This invention was made in view of the above-mentioned problems, and even when a shift lock mechanism using a bushing is adopted, the distance between the shift lever and the position plate is narrowed to prevent the relative position of the position pin. An object of the present invention is to provide a shift operation device with a shift lock for an automatic transmission, which can improve strength.

Means for Solving the Problems In order to achieve the above-mentioned object, a shift operating device with a shift lock for an automatic transmission according to the present invention is provided with a shift lever for operating an automatic transmission that is swingably provided on the vehicle body. On the other hand, the shift operating device with a shift lock for an automatic transmission is provided with a shift lock mechanism that prevents operation from a stop range position to a travel range position when the brake is not operated, and the shift lever is disposed within the shift lever body. A rod is disposed to be able to move up and down, and a position pin is provided at the lower end of the rod to engage and disengage the position plate at a plurality of range positions including a stop range. A shift button is provided for disengaging the position pin from the engagement position of the position plate, while the shift lock mechanism allows the position pin to move up and down below the position pin around the shift lever body. A roughly cylindrical bush with a groove formed thereon is rotatably disposed, and when the position pin is in the stop range and the brake is not operated, the bush is rotated in the locking direction to move the position pin up and down. An actuator is provided on the bush for removing the bush groove from the moving range to lock it and prevent the position pin from disengaging from the stop range. The present invention is characterized by providing a notch having a width such that both edges of the notch do not protrude from the peripheral surface of the shift lever toward the position plate even in some cases.

Function According to the above structure, when the shift lever is in the stop range and no brake operation is being performed, the bush rotates to the lock position, prevents the position pin from moving downward, and locks the shift lever. Prevents displacement to the driving range. On the other hand, when the brake is being operated, the bush rotates to the unlock position and allows the position pin to move downward, allowing the shift lever to move into the travel range. Furthermore, the notch provided in the bushing prevents the gap between the position plate and the position pin from increasing, so the strength of the position pin is improved.

Embodiment Hereinafter, an embodiment of this invention will be described based on FIGS. 1 to 5.

The shift lever 10, which is operated to switch between a plurality of ranges, is swingably attached to a floor panel 20 of the vehicle body via a pivot 21, as shown in FIGS. 2 and 3. and shift lever 1
A position panel 30 is erected on one side of the shift lever 10 along the swinging direction of the shift lever 10.

A position pin 11 having first and second protrusions 11a and 11b protruding to both ends is provided at the lower part of the shift lever 10, passing through a long hole 10a drilled in the shift lever 10 in the radial direction. First protrusion 11 on one end side of this position pin 11
a passes through the positioning hole 31 of the position panel 30.

On the other hand, a shift button 13 is provided on a knob 12 fixed to the upper part of the shift lever 10 so as to be freely retractable.
is configured to be displaced downward against the biasing force of the spring 16. The guide member 17 at the lower end of the rod 15 has the above-mentioned position pin 11.
is fixed.

Therefore, the first protrusion 11 of the position pin 11
a is at the position shown by the solid line in FIG. 3 when the shift button 13 is not pressed, and is lowered to the position shown by the broken line when the shift button 13 is pressed.

As shown in FIG. 3, the positioning hole 31 of the position panel 30 has a parking range (stop range), a back range (driving range),
A neutral range (stop range), a drive range (travel range), a second range (travel range), and a low range (travel range) are formed, and depending on the engagement relationship with the position pin 11, The shift lever 10 is allowed to be operated on the condition that the shift button 13 is pressed, and the structure is such that operation in the other direction, that is, →←←, can be performed even if the shift button 13 is not pressed. .

The lower part of the shift lever 10 and the position panel 30 described above are covered by a cover 40,
The shift lever 10 projects upward from a slit 41 formed in the upper wall of the cover 40 and extending back and forth. Further, on the side of the slit 41, a display section 4 for displaying the range along the slit 41 is provided.
2 is provided, and this display section 42 is provided with a cover 4.
The structure is such that it is illuminated from the inside by a lamp 43 inside.

Next, the shift lock mechanism will be explained using FIG. 1, FIG. 4, and FIG. 5.

The shift lock mechanism includes a partially cylindrical bush 50 that is rotatably fitted along the circumferential surface of the shift lever 10, and a washer 61 that connects the shift lever 10 to the shift lever 10.
A solenoid 60 as an actuator for rotating the bushing is fixed to the bushing. In addition, as shown in FIG. 1, the shift lever 10
The distance between the position panel 30 and the position panel 30 is set to be smaller than the wall thickness of the bush 50 indicated by the two-dot chain line.

The upper end surface 50a of the bush 50 is the position pin 11 when the shift button 13 is not operated.
It is provided at a position slightly lower than the lower end, and has a notch 51 that passes vertically on the position plate 30 side, and a position pin 11 on the other side.
The grooves 52 are each formed in a size that can allow the displacement of the second protrusion 11b.

Further, the bush 50 is formed with an operation piece 53 having an engagement hole 53a.
By inserting an engaging claw (not shown) extending downward from the tip of the solenoid pin 62 of the solenoid 60 into a, the bush 50 is rotated in conjunction with the protrusion and retraction of the solenoid pin 62.

The solenoid 60 is connected to a drive circuit (not shown), and when the brake is not operated and the shift lever 10 is in the parking range, the bush 50 is connected to the position pin 11 as shown in FIG. The second protrusion 11b is rotated to the lock position where it does not face the split groove 52, and in other cases, the second protrusion 11b is rotated to the split groove 52 as shown in FIG.
Rotate it to the unlock position opposite 2.

When the bush 50 is in the lock position, even if the shift button 13 is pressed, the second protrusion 11b of the position pin 11 comes into contact with the upper end surface 50a of the bush 50 and cannot be displaced downward. Projection 11a and position panel 3
0 is not released, and the shift lever 10 cannot be operated from the parking range to any other range.

On the other hand, when the bush 50 is in the unlocked position, pressing the shift button 13 moves the position pin 11 to the second protrusion 11b.
is displaced downward while entering the split groove 52, the engagement between the first protrusion 11a and the position panel 30 is released, and the shift lever 10 can be operated from the parking range to another range.

Note that the notch 51 of the bush 50 is
0 is in either the lock position or the unlock position, both notch edges 51a and 51b have a width that does not protrude from the circumferential surface of the shift lever 10 toward the position plate 30. Therefore, Bushiyu 5
0 is the shift lever 10 and position plate 30
In order to avoid intervening objects between the two, as described above, the two are provided closer to each other than conventionally, and the load on the first protrusion 11a of the position pin 11 due to the large distance between the two is reduced.

In addition, in the conventional structure, the bushing had to be inserted from the upper end of the shift lever 10 and then the position pin had to be press-fitted, making assembly difficult. It can be installed by using the screwdriver, and the assembly is also easy.

Effects As explained above, according to the shift operating device with a shift lock for an automatic transmission of this invention, a bush that prevents displacement of the position pin is used as the shift lock mechanism, so it is more effective than a structure that prevents displacement of the shift lever itself. As a result, the strength required for the mechanism is reduced, and increases in cost and weight can be suppressed.

In addition, since the bush does not become an intervening object between the shift lever and the position panel, it is possible to install the shift lever and the position panel close to each other, and it supports the position pin by engaging with the position panel. The load on the position pin can be reduced, and the relative strength of the position pin can be improved.

[Brief explanation of the drawing]

1 is a sectional view taken along the line -- in FIG. 2, FIG. 2 is a sectional view showing an embodiment of the shift operating device with a shift lock for an automatic transmission according to this invention, and FIG. 3 is a sectional view showing the position shown in FIG. 2. FIG. 4 is a perspective view of the bushing; FIG. 5 is a sectional view similar to FIG. 1 for explaining the operation of the bushing; FIG. Figure 7 is the − of Figure 6.
FIG. 10...Shift lever, 11...Position pin, 11a...First protrusion, 11b...Second protrusion, 13...Shift button, 30...Position plate, 50...Button, 51...Notch, 5
1a, 51b...both notch edges, 52...dividing groove, 6
0...Solenoid.

Claims (1)

[Scope of claim for utility model registration] While a shift lever for operating an automatic transmission is swingably provided on the vehicle body,
A shift lock-equipped shift operating device for an automatic transmission, which is equipped with a shift lock mechanism that prevents operation from a stop range position to a travel range position when a brake is not operated, wherein the shift lever is vertically movable within the shift lever body. A rod is freely disposed, and the lower end of the rod is provided with a position pin that engages and disengages the position plate in a plurality of range positions including the stop range, and the position pin is attached to the upper part of the shift lever body through the rod. A shift button is provided for disengaging the position pin from the engagement position of the position plate, and the shift lock mechanism includes a groove provided on the underside of the position pin around the shift lever main body to allow the position pin to move up and down. A generally cylindrical bushing having a cylindrical shape formed thereon is rotatably disposed, and when the position pin is in the stop range and the brake is not operated, the bush is rotated in the locking direction to control the vertical movement range of the position pin. An actuator is provided on the bush for disengaging the bushing groove from the locking position to place the bushing in a locked state and preventing the position pin from disengaging from the stop range, and the bushing is further provided with an actuator for disengaging the bushing from the locking position when the bushing is in the locking position or the unlocking position. 1. A shift operating device with a shift lock for an automatic transmission, characterized in that both edges of the notch have a width such that both edges of the notch do not protrude from the peripheral surface of the shift lever toward the position plate.