JPH04137918U - Automatic transmission shift lock device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the rattling of the control rod that links the ignition key cylinder device and the slider by restricting its rotation and to ensure smooth and reliable movement in the axial direction. . [Structure] A spherical part 21b at the lower end of the control rod 21 has flat parts 21a parallel to the axis on both sides.
In addition, a spherical portion 2 is provided at the upper end of the slider 16 that is engageable with and detachable from the lock pin 20 that interlocks with the brake pedal and that engages with the stopper lever 15 that restricts rotation of the shift rod.
A fitting hole 23 that is complementary to 1b is provided respectively, and the spherical part 2
1b is fitted into the fitting hole 23. Since the spherical part and the fitting hole form a two-plane connection, relative rotation to each other is prevented.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a shift control system for vehicles equipped with automatic transmissions (hereinafter referred to as A/T vehicles). Regarding the lock device.

0002

[Conventional technology]

In recent A/T cars, the shift lever may be carelessly moved from the parking position to the driving mode. The shift lock is designed to prevent sudden starts and out-of-control situations. Many are equipped with equipment.

0003 Some of these shift lock devices have a shift lever on the steering column side. Various shift lock devices for A/T vehicles equipped with This has already been proposed in JP-A No. 2-102832.

0004

[Problem that the idea aims to solve]

In the shift lock device of the earlier application, the ignition key is in the locked position. When the shift lever is in park and when the brake pedal is not depressed. The upper and lower ends of the control rod are held together to hold it in the locking position. It is formed into a spherical shape, and its upper end is connected to the ignition key cylinder device. The connector (upper end) and the lower end engage the lock pin linked to the brake pedal. It is simply connected by fitting into a removable slider (lower end). Therefore, the relative rotation between the control rod, connector and slider is restricted. I couldn't.

[0005] Therefore, the control rod is affected by vibrations when the vehicle is running and when it engages and disengages from the lock pin. rotates around its axis, causing rattling, interfering with the steering column and other parts, and causing abnormal noises. There have been problems in that the smooth movement in the axial direction is hindered.

[0006] This invention was devised to solve the above problems, and its purpose is to Roha is a control rod that links the ignition key cylinder device and slider. By restricting the rotation of the rod, it prevents it from wobbling and ensures smooth movement in the axial direction. To provide a shift lock device for an automatic transmission that enables reliable movement of the gear. It is in.

[0007]

[Means to solve the problem]

In order to achieve the above purpose, the present invention has a steering column that is almost parallel to the steering column. Connect one end of the axially movable control rod to the ignition key cylinder. before it can be engaged with and disengaged from the locking member connected to the brake pedal. By linking the control rod and the slider that is almost coaxial, the brake When the rake pedal is not depressed, the stopper lever linked to the slider is Prevent the foot rod from rotating and lock the shift lever in the parking position. , also depress the brake pedal and press the key cylinder of the ignition key cylinder device. When the cylinder is rotated to the specified position, the slider moves in the axial direction and the lock is released. In the shift lock device of an automatic transmission, the control A spherical part is provided at the end of the rod connected to the slider, and a spherical part is provided on both sides of the rod. A flat part parallel to the axis is formed, and the spherical part is formed at one end of the slider. It is characterized by being fitted into a fitting hole that is complementary to the spherical part.

[0008]

[Effect]

The connecting end of the control rod with the slider has flat parts on both sides. As a spherical part, this is fitted into a fitting hole that is complementary to the spherical part formed on the slider. As a result, the spherical part and the fitting hole form a two-plane connection, and the control rod and The slider is prevented from rotating relative to each other.

[0009]

【Example】

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 3.

0010 In Fig. 1, 1 is a shaft that rotatably passes through a cylindrical steering column 2. The steering shaft 3 is located on the side of the steering column 2 and is parallel to the steering column 2. The shift rod is attached to the upper end (right side in the figure) of the shift rod. By operating the lever 4, it is supported to be movable and rotatable in the axial direction. ing.

[0011] At the top of steering column 2, there are multiple range positions for selecting driving conditions. The proximal end of the detent plate 5 having a section is fixed. detentop The range position of rate 5 (parking position in the figure) has a shift The detent pin 6 protruding from the trod 3 is engaged, and the shift lever 4 cannot be operated. By moving the detent pin 6 to the desired range position, It is now possible to select the desired driving conditions.

0012 A support plate 7 is arranged perpendicularly to the column 2 on the lower peripheral surface of the steering column 2. This support plate 7 has a support tube 8 and a guide tube 9 that are fixedly attached to each other through the upper end of the support tube 8 and guide tube 9. An L-shaped bracket 10 is fixed with bolts 11 and nuts 12. There is.

[0013] The lower end of the shift rod 3 is rotated by a bush 13 fitted into the support tube 8. freely supported. The left end of the shift rod 3 located slightly above the bracket 10 is A cable lever 14 whose portion (upper side in the figure) is bent downward into an L-shape is fixed. , the right end portion (lower side in the figure) of the bent portion 14a is placed above the right end of the bracket 10. so that it can come into contact with the side surface of the left end of the stopper lever 15 which is pivotally mounted to be able to swing downward. It has become.

[0014] Inside the guide tube 9, as shown in detail in FIG. A protruding piece 16 engaged with two longitudinal elongated holes 9a and 9b formed with a gap between them. A slider 16 made of hard synthetic resin having a and 16b is moved in the axial direction (vertical direction). They are slidably fitted. One protruding piece 16a is located on the right side of the stopper lever 15. It is engaged with a slight play in a round hole 15a that is bored toward the side.

[0015] A cylindrical guide member 17 fixed to the lower end of the bracket 10 facing in the left-right direction , there is a lock pin connected to the brake pedal 18 with a wire cable 19. (Lock member) 20 has its tip (right end) compressed into the guide member 17. A coil spring (not shown) is inserted so that it always protrudes to the right. General At all times, the protruding end of the lock pin 20 is connected to the other protruding end of the slider 16. It is possible to enter the movement locus of the piece 16b and prevent the slider 16 from moving downward. The sea urchin is turning.

[0016] On the right side of the steering column 2, there is a control rod 2 parallel to the steering column 2. 1 is constantly biased downward by a compression coil spring 22 compressed above it. established in the state. At the lower end of the control rod 21, there is a A spherical portion 21b having a truncated spherical shape and having a row of flat portions 21a is formed.

[0017] As shown in FIGS. 2 and 3, the lower end of the control rod 21 has a spherical portion 2. 1b is fitted to form a complementary shape with the spherical part 21b formed at the upper end of the slider 16. By fitting into the hole 23, they are connected to each other so that they cannot rotate relative to each other around the axis. ing. Note that the circumferential surface of the slider 16 in which the fitting hole 23 is formed has a substantially centripetal direction. Four slits 24 are formed facing the spherical portion 21b. The opening of 23 is slightly enlarged so that the spherical part 21b can be easily inserted. be.

[0018] 25 is an ignition key cylinder fixed to the top of steering column 2 The device has a key that can be rotated between the lock position and the start position by key operation. - A cylinder 26 and a lock cam (not shown) that can be engaged with and disengaged from its locking pawl (not shown). , a hollow hole 2 that is engaged with a lock cam and is formed in the body 25a and faces in the vertical direction; A slide lever 28 that can be moved up and down within 7 is provided.

[0019] An engaging protrusion 28a extending leftward from the lower end of the slide lever 28 is It protrudes toward the steering column 2 side from the elongated hole 25b formed in the body 25a. A connector made of synthetic resin or the like is provided above and coaxially with the control rod 21. It engages with the rear end of the connector 29.

[0020] The upper end of the control rod 21 connects its spherical surface 30 to the fitting hole 2 of the connector 29. By fitting into 9a, it is linked to the ignition key cylinder device 25. There is.

[0021] The key cylinder 26 of the ignition key cylinder device 25 is a slide lever 28 is at the upper limit, that is, when the brake pedal 18 is When the cup pin 20 and the slider 16 are in the engaged state, the starting position is It can be rotated between the two positions by operating a key. At this time, press the key When the slider 26 is in the locked position, the slide lever 28 is prevented from moving downward. Ru.

[0022] When the key cylinder 26 is turned on or to the start position, the slide lever 28 becomes movable downward. However, the slide lever 28 has not moved downward. When the key cylinder 26 is locked, the key cylinder 26 cannot be rotated to the lock position.

[0023] A control lever is provided between the shift rod 3 and the control rod 21. -31 is rotatable around a support shaft 32 fixed to the steering column 2. The left end is connected to the guide piece 33 fixed to the shift rod 3, and the right end is connected to the guide piece 33 fixed to the shift rod 3. , clockwise to the L-shaped guide piece 34 fixed to the control rod 21. They are engaged so that free rotation in the forward and counterclockwise directions is restricted. shift The lever 4 is in the parking position and the shift rod 3 is located downward. When the control rod 21 is forced upward via the control lever 31, It has been regulated to be moved. 35 indicates that the control lever 31 is below a certain level. This is a stopper that prevents the upper rotation.

[0024] Next, the operation of the shift lock device will be explained.

[0025] The key cylinder 26 is in the lock position and the shift lever 4 is in the parking position. If the brake pedal 18 is not depressed when the vehicle is in the , the lock pin 20 linked to this is in a protruding state, and the slider 16 and this The control rod 21 connected to the control rod 21 is prevented from moving downward. This condition again In this state, the control rod 21 is forced upward by the control lever 31. and the slide lever of the ignition key cylinder device 25 28 is also prevented from moving downward.

[0026] Therefore, the key cylinder 26 is in the lock position and the brake pedal 18 is depressed. In the unloaded state, the stopper lever is engaged with the protrusion 16a of the slider 16. -15 is located within the rotation locus of the cable lever 14, and the shift rod In order to prevent rotation of the shift lever 3 in the select direction, operate the shift lever 4 to It is not possible to move the front pin 6 from the parking position to another range position. Can not. Rotate the key cylinder 26 from the on position to the start position to start the engine. When started, the slide lever 28 and the control rod linked to it 21 becomes movable downward. However, if the brake pedal 18 is not depressed , the slider 16 comes into contact with the lock pin 20, and the control rod 21 moves downward. Since the movement of the slider 16 remains blocked, the stopper lever linked to the slider 16 There is no rotation of shift lever 15, so shift lever 4 in the parking position cannot be moved to other levers. cannot be moved to another location.

[0027] When the brake pedal 18 is depressed, the lock pin 20 moves along the movement trajectory of the slider 16. The slider 16 and control rod 21 are retracted from the compression coil spring 22. The stopper lever 15 is moved downward by the action of the stopper lever 15 and is engaged with the slider 16. The shift lever swings downward and deviates from the rotation path of the cable lever 14, causing the shift rod to swing downward. The lock is released, the shift rod 3 becomes rotatable, and other operations using the shift lever 4 are performed. It becomes possible to switch to the range.

[0028] As explained above, in the shift lock device of the above embodiment, the controller The lower end of the rod 21 is provided with flat parts 21a parallel to the axis on both sides. The spherical part 21b is formed at the upper end of the slider 16. Since it is fitted into the fitting hole 23 which forms a complementary shape to the spherical part and is connected to each other in two planes, Even if the upper end of the control rod 21 is made into a spherical part 30, the slider 16 and the control There is no relative rotation between the roll rod 21 and the axis.

[0029] Therefore, the control rod 21 becomes loose around the axis when the vehicle vibrates or moves. It may get stuck and interfere with steering column 2 and other parts, causing wear and noise. Problems such as movement and smooth movement have been resolved, and durability and reliability have been improved. It increases.

[0030] Further, the guide tube 9 that guides the slider 16 is secured to the support plate 7 by bolts 11. Since the control rod 21 is fixed to the bracket 10, the length of the control rod 21 should Even if there are variations in the angle, a spacer can be placed between the support plate 7 and the bracket 10. Insert and adjust the axial position of the guide tube 9, and then remove the slider 16 and control rod. 21, and the engagement position of the slider 16 and the stopper lever 15 etc. can be easily adjusted. I can do that.

[0031]

[Effect of the idea]

According to the present invention, relative rotation between the slider and the control rod is prevented. This may cause the control rod to rotate around its axis, cause it to wobble, or interfere with other parts. There is no risk of the machine moving in the axial direction, and it can now move smoothly and reliably in the axial direction. increases.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway plan view of the entire shift lock device showing one embodiment of the present invention.

FIG. 2 is an enlarged vertical cross-sectional view of essential parts taken along line A-A in FIG. 1;

FIG. 3 is a vertical cross-sectional view of essential parts taken along line BB in FIG. 2;

[Explanation of symbols]

1 Steering shaft 2 Steering column 3 Shift rod 4 Shift lever 7 Support plate 9 Guide tube 9a, 9b long hole 10 Bracket 14 Cable lever 14a Bend part 15 Stopper lever 15a Round hole 16 Slider 16a, 16b protruding piece 17 Guide member 18 Brake pedal 19 wire cable 20 Lock pin (lock member) 21 Control rod 21a Plane part 21b Spherical part 22 Compression coil spring 23 Fitting hole 24 slit 25 Ignition key cylinder device 26 key cylinder 28 Slide lever 29 Connector 29a Fitting hole 30 Spherical part 31 Control lever 33, 34 Guide piece

Claims (1)

[Scope of utility model registration request] 1. The control rod, which is capable of engaging and disengaging one end of the control rod that is movable in the axial direction substantially parallel to the steering column, to an ignition key cylinder device and the other end to a locking member that is linked to a brake pedal. By being linked to sliders that are approximately coaxial with the rod, when the brake pedal is not depressed, the stopper lever linked to the slider prevents rotation of the shift rod and locks the shift lever in the parking position, and also locks the shift lever in the parking position. In the shift lock device for an automatic transmission, the slider moves in the axial direction to release the lock when the pedal is depressed and the key cylinder of the ignition key cylinder device is rotated to a predetermined position. A spherical part is provided at the connecting end with the slider, and flat parts parallel to the axis are formed on both sides of the spherical part, and the spherical part is complementary to the spherical part formed at one end of the slider. A shift lock device for an automatic transmission characterized by being fitted into a hole.