JPH0242499Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a select lever device for an automatic transmission used in a vehicle equipped with an automatic transmission.

(Prior Art) As a conventional select lever device for an automatic transmission, for example, a device as described in Japanese Utility Model Application Publication No. 166027/1983 is known.

In this conventional device, as shown in FIG. 5, the detent pin 01 is in the neutral range (N range).
A guide cam hole 02 was formed by the same guide surface so that the vehicle could be moved from the drive range to the drive range (D range) without resistance. In FIG. 5, 03 is a select lever, 04 is a position plate, and 05 is a select check mechanism.

(Problems to be solved by the invention) However, as mentioned above, in the case of the select lever device of such a conventional automatic transmission,
Since the guide cam hole 02 was formed on the same guide surface from the N range to the travel range, the driver was away from the seat when the engine was driven and the detent pin 01 was selected to the N range position when the vehicle was stopped. Even at the same time, there was still a possibility that an external force on the select lever could cause the drive range to be selected.

For example, the select lever 03 may be inadvertently pushed due to contact of hands and feet during a walk-through (movement between passenger seats), or due to a child's mischief.

(Means for solving the problem) The present invention was made with the purpose of solving the above-mentioned problems, and to achieve this purpose, the present invention has a structure in which the select lever is swingable on the base plate. An operating knob is attached to the upper end of the select lever, and the operating knob is provided with a push button that moves up and down a rod inserted into the select lever. In a select lever device for an automatic transmission, the select lever device of an automatic transmission is provided with a position plate formed with a guide cam that guides a pin member that is stroked downward against the select position according to a select position. forms a neutral lock groove that is pushed in by the upward biasing force of the spring, and when an actuator drive signal is input to the position plate at the neutral position, the pin member is selected from the neutral lock groove position to the travel range position. Equipped with an electrically driven actuator that strokes it downward to a position where it can be operated.
The detection means includes a seat switch that detects whether the driver is seated or not, and an engine drive sensor that detects whether the engine is running or not. The means is characterized in that an actuator drive circuit is provided that outputs an actuator drive signal to the electrically driven actuator when it is input.

(Function) Therefore, in the automatic transmission select lever device of the present invention, by using the above-mentioned means, even if the driver leaves the driver's seat with the select lever in the neutral position while the engine is running, ,
Since the pin member is pushed into the neutral lock groove by the urging force of the spring, even if the select lever is pushed in the direction of the driving range by an external force, the driving range will not be selected.

Additionally, when the engine is running and the driver is seated, the electric drive actuator is driven and the pin member is stroked downward, allowing normal selection operations to be performed without any hindrance. can.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
In describing this embodiment, a select lever device of a vehicle equipped with an automatic transmission will be used as an example.

First, the configuration of the embodiment will be explained. As shown in FIG. 2, the overall structure of the transmission select lever device according to the embodiment of the present invention is such that a lever operating section A is provided on a floor panel (not shown), and this lever operating section A includes:
One end of a push-pull cable 3 connected to a control valve of an automatic transmission 2 via a trunnion 1 is connected.
Also, at an appropriate position on the vehicle body (not shown), there is a solenoid actuator 4 (electric A solenoid drive circuit 5 (actuator drive circuit) is provided to drive the drive actuator.

Next, as shown in FIG. 1, the lever operating section A of the embodiment includes a base plate 10, a select lever 20, a detent pin (pin member) 30, a position plate 40, and a solenoid actuator 4.
(electric drive actuator).

The base plate 10 is a base plate of the lever operating section A, and is bolted to a floor panel of a vehicle body (not shown).

The select lever 20 is an operating lever for switching the select position, and is attached to the base plate 1.
0 via a support shaft 21 so as to be rotatable. The select lever 20 includes a swing tube 22, a lever pipe 23, an operation knob 24, and a detent pin lifting mechanism 25.

The swing tube 22 is a tube that serves as a swing fulcrum for the select lever 20, and is provided on the base plate 10 with the support shaft 21 inserted through the swing tube 22.

The lever pipe 23 is the select lever 20
The operation pipe is the main body of the operation pipe, and is provided in an upright state on the circumferential surface of the swing cylinder 22. Incidentally, an elongated pin elevating hole 23a for elevating the detent pin 30 is formed at the end of the lever pipe 23 on the swing cylinder side.

The operating knob 24 is a handshake part for operating the select lever 20, and is fixed to the tip of the lever pipe 23.

The detent pin elevating mechanism 25 is a mechanism built into the lever pipe 23 and the operating knob 24.
3. It is composed of an intermediate member 254, a guide member 255, and a spring 256.

The push button 251 is pressed by the driver when lowering the detent pin 30, and is provided so that a portion of the button 251 protrudes from an opening formed at one end of the operating knob 24.

The rod 252 is the main operating force transmitting member for transmitting the operating force from the push button 251 to the detent pin 30, and is connected to the lever pipe 23.
is housed within.

The inclined member 253 is a transmission direction converting member for transmitting the operating force from the horizontally arranged push button 251 to the vertically arranged rod 252, and is provided at the tip of the rod 252 on the push button side. .

The intermediate member 254 is an intervening member for smoothing the transmission direction change of the operating force of the inclined member 253, and is connected to the inclined surface of the inclined member 253 through a spring 254a within the closed end of the operating knob 24. They are slidably fitted together.

The guide member 255 is a mounting member for the detent pin 30, and is provided at the end of the rod 252 facing the push button side.

The spring 256 is provided inside the lever pipe 23 on the swing cylinder side, with one end of the spring 256 in contact with the guide member 255.

The detent pin 30 has both ends protruded from the elongated pin elevating hole 23a of the lever pipe 23 so as to be able to move up and down, and the detent pin 30 is attached to the guide member 25.
It is attached to 5.

Further, the position plate 40 is a plate in which a guide cam hole (guide cam) 26 is formed to guide the detent pin 30 according to the selected position.
It is fixed to the base plate 10 by bolting. A check ball cam hole 411 of a select check mechanism 41 for performing a select check is also formed in the position plate 40.

Further, in the guide cam hole 26, push buttons 25 are provided at the first speed range (1 range) and reverse range (R range) as shown in FIG.
A first cam protrusion 411a corresponding to the pin stroke amount (1) of the detent pin 30 due to the pressing operation to 1 is formed, and the first cam protrusion 411a is stronger in the intermediate portion between the reverse range (R range) and the parking range (P range). A second cam protrusion 411b corresponding to the pin stroke amount (1+2) caused by pressing the push button 251 is formed.

Furthermore, a neutral lock groove 50 is formed in the neutral range (N range) position of the guide cam hole 26 to prevent the selection change from being made from the N range to the travel range.

Further, the select check mechanism 41 includes a fourth
As shown in the figure, a ball support frame 412 fixed to the lever pipe 23, a spring 413 inserted into this ball support frame 412, and a spring 413 that connects the check ball cam hole 41
1 and a check ball 414 which is pressed into contact with the check ball 414.

The solenoid actuator 4 is inserted into the neutral lock groove 5 when the driver is seated in a driver's seat (not shown) and is driving an engine (not shown).
This is an actuator that releases the locked state of the detent pin 30 pushed into the 0 position, and is attached to the upper part of the position plate 40 at the N range position. The solenoid actuator 4 is of a type in which the shaft 4b protrudes when current flows through the solenoid coil 4a, and the amount of protrusion of the shaft 4b is such that the detent pin 30 is locked in the neutral lock groove. It is set to an amount that can be pushed down from 50 to the height of the D range.

The solenoid drive circuit 5 is a circuit that drives the solenoid 4 when the above-mentioned conditions are met, and as shown in FIG.
01, a normally open relay 502, a battery 503, and an ignition switch 504.

The seat switch 501 is a switch that is placed at a predetermined position on a driver's seat (not shown) and is closed when the driver is seated.

The normally open relay 502 includes a relay coil portion 502a that is energized when the seat switch 501 and the ignition switch 504 are closed, and a relay switch portion 502b that is closed when the relay coil portion 502a is energized.

The ignition switch 504 is a detection means used as an engine drive sensor, and when the ignition switch 504 is closed, it is determined that the engine is running. Note that other sensors such as an engine rotation speed sensor may be used as the engine drive sensor.

Next, the operation of the embodiment will be explained.

(a) When the driver is seated in the driver's seat When the driver sits in the driver's seat (not shown), the seat switch 501 shown in FIG. 1 is closed.

At this time, the driver turned the ignition switch 50
4 is closed, the current in the battery 503 switches from the ignition switch 504 to the seat switch 501.
→Flows to relay coil 502a and closes relay switch 502b.

By closing the relay switch 502b, the current in the battery 503 is also passed from the ignition switch 504 to the relay switch 502b to the solenoid actuator, and the electromagnetic force of the solenoid coil 4a of the solenoid actuator 4 causes the shaft 4b to flow. protrudes, and this shaft 4b locks the detent pin 30 into the neutral lock groove 50.
Push it down to a height that allows it to be moved from the to the driving range.

As a result, when the driver is seated in the driver's seat and the ignition switch 504 is closed, selection conversion to the travel range can be performed by the driver's normal lever operation.

Furthermore, when the driver is seated in the driver's seat and the driver has no intention of driving and leaves the ignition switch 504 in the open state, the current in the battery 503 is transferred to the switch 5.
Since the solenoid actuator 4 is not energized beyond 04, the detent pin 30 is positioned within the neutral lock groove 50 shown in FIG. There is no fear that the select lever 20 will fall over and the position of the detent pin 30 will be changed to the driving range, causing the car to start moving.

(b) When the driver leaves the driver's seat If the driver leaves the driver's seat not shown in the diagram, the first
The seat switch 501 shown in the figure is opened.

Therefore, regardless of whether the ignition switch 504 is closed or opened by the driver,
Since the current of the battery 503 is not applied to the solenoid actuator 40, the detent pin 3
0 remains located in the neutral lock groove 50, the select lever 20 is moved by an external force.
There is no need to worry about the position of the detent pin 30 being changed to the travel range due to the detent pin 30 falling down.

As explained above, in the select lever device of the automatic transmission according to the embodiment of the present invention, the detent pin 3 is placed in the N range position of the guide cam hole 26.
0 forms a neutral lock groove 50 that is pushed in by the upward biasing force of a spring 256, and the position plate 40 is configured to select the detent pin from the neutral lock groove 50 position to the travel range position when operating to the N range position. The solenoid 4 is provided with a solenoid 4 that is stroked downward to a position where it can be operated, and the detection means includes a seat switch 501 that detects whether the driver is seated or not, and an ignition coil 503 that detects whether the engine is driven or not. A solenoid drive circuit 5 is provided which outputs a drive signal to the solenoid actuator 4 when the engine is running and a signal indicating that the driver is seated is input. Even if the select lever 20 is pushed in the travel range direction due to contact or a child's mischief, there is no fear that the select lever 20 will fall down, the detent pin 30 will be position-changed to the travel range position, and the vehicle will start moving.

Although the embodiments of the present invention have been described above in detail with reference to the drawings, the specific configuration is not limited to these embodiments, and the present invention may be modified without departing from the gist of the present invention. included.

For example, in embodiments, the position plate is
Although it is provided as a plate separate from the base plate, it may be provided integrally with the base plate.

Further, the solenoid may be another electrically driven actuator such as an electric motor, and the ignition switch may be another engine drive sensor that can detect whether the engine is running or not.

Furthermore, the solenoid drive circuit is not limited to the circuit of the embodiment.

Further, the ignition switch is used as an engine drive sensor that detects when the engine is not running, and the solenoid actuator is of a type that stores the protruding shaft when current flows through the solenoid coil. A similar effect can also be obtained.

(Effect of the invention) As explained above, in the select lever device of the automatic transmission of the invention, a neutral lock groove is formed in the neutral position of the guide cam,
Since the position plate is provided with an electrically driven actuator that moves the pin member downward, and the detection means is provided with an actuator drive circuit that includes a seat switch and an engine drive sensor, even if the select lever is pushed in the direction of the travel range by an external force, It is never selected to the driving range side.

Additionally, when the engine is running and the driver is seated, the electric drive actuator is driven and the pin member is stroked downward, allowing normal selection operations to be performed without any hindrance. can.

[Brief explanation of the drawing]

Fig. 1 is a central vertical cross-sectional view of the lever operation part of the select lever device according to the embodiment of the present invention, Fig. 2 is an overall perspective view of the select lever device, Fig. 3 is a partially cutaway view of the position plate, and Fig. 4 5 is a front view showing a lever operating section of a select lever device, and FIG. 5 is a front view showing a lever operating section of a conventional select lever device. 10...Base plate, 20...Select lever, 24...Operation knob, 251...Push button, 252...Rod, 256...Spring, 26...Guide cam hole (guide cam), 30
... Detent pin (pin member), 50 ... Neutral lock groove, 4 ... Solenoid (electric drive actuator), 5 ... Solenoid drive circuit (actuator drive circuit), 501 ... Seat switch, 504 ... Igni Power switch (engine drive sensor).

Claims (1)

[Scope of utility model registration request] A select lever is swingably supported on the base plate, an operating knob is attached to the upper end of the select lever, a push button is provided on the operating knob for vertically moving a rod inserted into the select lever, and the rod is , a pin member is provided that is moved downward against a spring when a push button is pressed, and the base plate is provided with a position plate formed with a guide cam that guides the pin member according to the selection position. In the select lever device of the transmission, a neutral lock groove into which the pin member is pushed by the upward biasing force of the spring is formed at the neutral position of the guide cam, and an actuator drive signal is applied to the position plate at the neutral position. an electrically driven actuator that moves the pin member downward from a neutral lock groove position to a position where a selection operation to a travel range position is possible when an input is made; It includes an engine drive sensor that detects whether the engine is being driven or not, and when a signal indicating that the engine is being driven and the driver is seated is input from the detection means, an actuator drive signal is output to the electrically driven actuator. A select lever device for an automatic transmission characterized by being provided with an actuator drive circuit.