JPH0563658B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a shift lever locking device for an automatic transmission in which the shift lever is automatically locked together with the steering wheel when parking the vehicle. be.

[Prior Art] Generally, the steering wheel of an automobile is locked when the starting key is removed to prevent theft, but the shift lever of an automatic transmission can be freely moved from the parking position P to other positions, such as the neutral position. It is possible to tilt the vehicle toward the N, and there is a risk that a child's mischief may cause a vehicle parked on a slope to start moving. Therefore,
When the start key is turned to the engine stop position (or to a position where the start key can be removed), if the shift lever is locked in the parking position P and the shift lever is not in the park position P, turn the start key to the engine stop position. A locking device for a shift lever and a steering wheel in which the shift lever and handlebars are locked is proposed in Japanese Patent Application No. 58-58622.

In conventional shift lever lock devices for automatic transmissions, the only thing that restrains the bell crank that engages with the shift lever is the sliding resistance of the remote control cable, and it is difficult to prevent excessive vibration of the remote control cable. Therefore, relative movement may occur between the outer tube and the cable, and in such a case, there is a possibility that the shift lever will not return to the parking position P.

In order to restrain the bellcrank, it is possible to install a spring that biases the bellcrank to rotate in one direction, but this method requires an operating force to overcome the spring force when moving the bellcrank, and the control pin The spring force must be increased to engage the detent pin (also known as the detent pin) with the edge of the control plate. However, if we increase the force of the spring that biases the control pin,
The force required to operate the push rod using the knob during normal gear shifting operations increases, leading to driver fatigue.

[Problems to be Solved by the Invention] Therefore, an object of the present invention is to maintain the bell crank in the unrestricted position so that the shift lever is not restricted when operating the shift lever to a position other than the parking position, and to prevent the shift lever from being restricted. To provide a shift lever lock device for an automatic transmission that is smooth and easy to operate, in which the bell crank is held in a lock position for restraining a shift lever in conjunction with a handle lock mechanism when the vehicle is in a parking position. It is in.

[Means for Solving the Problems] In order to achieve the above object, the configuration of the present invention is based on a bell crank that restrains the control pin of the shift lever, which is interlocked and connected with the start key at the stop position, at the parking position. The lever is axially supported on a base frame and includes a roller that is axially supported and engaged with the bellcrank by a spring force when the shift lever is in the operating position and released from the bellcrank by the shift lever when the shift lever is in the parking position.

[Operation] At the same time as the shift lever 64 is returned to the parking position,
The lever 71 together with the roller 45 is rotated counterclockwise about the shaft portion 71b against the force of the spring 41, and the restriction on the bell crank 75 is released. When the cable 44 is pulled in conjunction with the handle lock mechanism, the bell crank 75 is engaged with the control pin, and the control pin 6 of the shift lever is engaged.
6 is prevented from moving up and down, and the shift lever 64 is locked in the parking position.

When the tensile force of the cable 44 is released, the bell crank 75 is rotated clockwise about the support shaft 63 by lowering the control pin 66 by operating the push rod 59, and the protrusion 76 is rotated around the edge of the control plate 68. This corresponds to part 68b. Then, the control pin 66 is disengaged from the notch 78 of the bell crank 75, and the shift lever 64 can be tilted to any shift position.

When the shift lever 64 is in a position other than the parking position P, the lever 71 is pulled downward to the right by the force of the spring 41 and hits the upper edge 68a of the control plate 68.
It approaches the edge of the bell crank 75 and prevents the bell crank 75 from rotating around the support shaft 63.

The lever 71 is used to restrain the bell crank 75.
The spring 41 provided in the control pin 6 is expanded and contracted simply by operating the shift lever 64.
The spring 41 does not exert any resistance against the vertical movement operation of 6.

[Examples of the Invention] The present invention will be described based on Examples. As shown in FIG. 1, a push rod 59 is inserted into a hollow portion of a shift lever 64 of an automatic transmission, and is pushed down against a spring by a known knob disposed at its upper end. A horizontal control pin 66 is supported at the lower end of the push rod 59, and both ends of the control pin 66 are guided through an axially extending slit 60 provided in the shift lever 64, and are biased upward by the spring described above. There is.

A lower end portion of the shift lever 64 is fixedly supported by a rotation shaft 70. The rotation shaft 70 is rotatably supported by the base frame 69. A lever 72 is fixedly supported on the rotation shaft 70 integrally with the shift lever 64, and the shift mechanism of the automatic transmission is operated by this lever.

A control plate 68 extending upward is fixedly supported on the base frame 69, and the aforementioned control pin 66 is engaged with an opening 67 provided in the control plate 68. A cover 65 is fixedly supported on the upper part of a control plate 68 which also serves as a base frame, and a shift lever 64 is inserted along the groove of this cover.
can be tilted back and forth.

As shown in FIG. 2, the upper edge of the opening 67 of the control plate 68 has an edge N that is deeply cut in the center and engages the control pin in the neutral position as shown at 66'. Drive position and first
Edges D and L with which the control pin 66 engages in the gear position are arranged in a stepped manner, and an edge R with which the control pin 66 engages in the reverse position is disposed in a stepped manner on the front side of the edge N. A deeply cut edge P is provided at which the control pin 66 engages. A bell crank 75 is rotatably supported by a support shaft 63 on a control plate 68 adjacent to the edge P of the opening 67 . A cable 44 (FIG. 4) that is pulled when the start key is turned to the engine stop position is connected to one arm of the bell crank 75 with a pin 62. Almost triangular bell crank 7
A notch 78 is provided in the other arm 79 of 5, and the control pin 66 is configured to engage with the notch 78 when the shift lever 64 is in the parking position.

An edge 68b and an edge 68c are provided at the front edge of the control plate 68.
A notch 78 is provided. On the other hand, a projecting piece 76 is formed on the bell crank 75 by bending this intermediate edge, and the bell crank 75 is rotated between the edges 68b and 68c.

According to the present invention, when the shift lever 64 is in the parking position P, the bell crank 75 can be restrained in the position shown in FIG. 1, and when the shift lever 64 is in another position, it can be restrained in the position shown in FIG. It is configured to be restrained. Therefore, the lever 71 is supported by the control plate 68 with a shaft portion 71b, and the roller 45 is supported by this end portion 71a. This roller 4
5 is biased by the force of a spring 41 stretched between the end 71a of the lever 71 and the support member 49 of the control plate 68 so as to be able to roll along the upper edge 68a of the control plate 68. .

As shown in FIG. 3, the lever 71 has a shaft portion 71b.
The intermediate portion thereof is bent into an S-shape, and the end portion 71a is parallel to the shaft portion 71b, and the roller 45 is supported.

Next, the operation of the device of the present invention will be explained. When the start key is turned from the engine stop position to the start or operating position, the tension on the cable 44 connected to the bell crank 75 is released, and when the push rod 59 of the shift lever 64 is pushed down,
The control pin 66 moves down while rotating the bell crank 75 about the support shaft 63, and the control plate 66
Since it comes off the edge P corresponding to the parking position of No. 8,
The shift lever 64 can be operated to a desired operating position (range).

When the shift lever 64 is in a position other than the parking position, the protruding piece 76 of the bell crank 75 hits the edge 68b, preventing clockwise rotation about the support shaft 63, and the upper edge of the control plate 68 The roller 45 that engages with the portion 68a approaches (or may engage with) the upper side of the edge of the bell crank 75, and the counterclockwise rotation of the bell crank 75 about the support shaft 63 is prevented. Therefore, even if the cable 44 rattles and is pulled, the bell crank 75 is held in a predetermined position.

When the shift lever 64 is returned to the parking position, the roller 45 is pushed to the left by the shift lever 64 against the force of the spring 41, and the lever 71 is rotated counterclockwise about the shaft portion 71b. . At the same time, the control pin 66 engages with the notch 78 of the bell crank 75, contrary to the previous case, and the push rod 5
When the operating force 9 is released, the control pin 66 is pushed up by the spring and engaged with the edge P. At this time, the bell crank 75 is rotated counterclockwise about the support shaft 63, and the cable 44 is loosened.

Therefore, when the start key is turned to the engine stop position, the slack in the cable 44 is removed, the bell crank 75 is restrained in the state shown in FIG. I can't. thus,
When the start key is turned to the engine stop position, a known handle lock mechanism is locked and the shift lever 64 is also locked to the parking position.

In addition, when connecting the automatic transmission locking device according to the present invention to a steering wheel locking mechanism in which the sliding plate or the locking member is equipped with a spring, it is necessary to use a pull mechanism in which only the tensile force is transmitted to the bell crank by operating the start key. The present invention provides a shift lever locking device that can be used with a steering wheel, which reduces costs compared to the case of using a conventional remote control cable consisting of an outer tube and a cable, and which is highly reliable.

[Effects of the Invention] As described above, the present invention includes a bell crank that is axially supported on a base frame, which restrains a control pin of a shift lever, which is interlocked with a start key in an operation stop position, in a parking position;
Since the lever, which is shaft-supported on the base frame, is equipped with a roller that is engaged with the bell crank by a spring force when the shift lever is in the operating position and released from the bell crank by the shift lever when the shift lever is in the parking position. The free movement is not directly regulated by the spring, but the end of the lever that receives the spring force is regulated by a roller, and the roller regulation is released by the shift lever when the shift lever is returned to the parking position, so the push rod The force required to operate the control pin is reduced, and when the shift lever is in a position other than the parking position, the bell crank is regulated to the specified position by the lever, so the bell crank does not move loose even if the cable vibrates. ,
This solves the problem of not being able to return the shift lever to the parking position.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a schematic configuration of a shift lever lock device for an automatic transmission according to the present invention, FIG. 2 is a side view showing the relationship between a control plate and a bell crank in the same shift lever lock device, and FIG. 4 is a perspective view showing the configuration of a lever and spring for restraining the bell crank, and FIG. 4 is a side view showing the shift lever locking device of the automatic transmission shown in FIG. 1 in an unlocked state. 41... Spring, 44... Cable, 45... Roller, 59... Push rod, 63... Support shaft,
64...Shift lever, 66...Control pin, 67...Opening, 68...Control plate, 71...Lever, 75...Bell crank, 78...Notch.

Claims (1)

[Claims] 1 A bell crank that restrains the control pin of the shift lever, which is interlocked and connected with the start key in the operation stop position, in the parking position is supported axially on the base frame, and when the shift lever is in the operation position, it is engaged with the bell crank by a spring force and is in the parking position. A locking device for an automatic transmission, characterized in that a lever that is shaft-supported on a base frame is equipped with a roller that is released from a bell crank by a shift lever.