JPH07286658A - Shift lock unit - Google Patents

Abstract

PURPOSE:To move and guide a shift lock plate, which is moved by shift lever axial direction movement of a grooved pin, by means of a single guiding pin so as to reduce a size in a shift lock unit. CONSTITUTION:When a brake pedal is stepped on in a parking range, a stopper 42 is driven by means of a solenoid 50 so as to be released from a shift lock plate 28, so that a shift change from the parking range to another range is allowed. The shift lock plate 28 moved according to the movement in the shift lever axis direction of a grooved pin.14 is energized rotationally around a guiding pin 32 in the arrow C direction by means of a torsion coil spring 72, and is guided in the direction perpendicular to the guide pin 32 while brought into slide contact with a guiding projection 78. Alternatively, the shift lock can be forcibly released by rotating the shift lock plate 28 in the direction opposite to the arrow C direction by means of a shift lock releasing rod 80 without depending on any drive of the solenoid 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift lock unit used for preventing an erroneous operation of a shift lever of an automatic transmission such as an automobile.

[0002]

2. Description of the Related Art In a shift lever device for an automatic transmission of an automobile, as shown in FIG. 10, a shift lever 300 is rotated around a rotation shaft 302 at its lower end in the direction of arrow A so that the shift lever 300 rotates together with the shift lever 300. The moving grooved pin 304 changes the engagement position with the detent groove 308 of the detent plate 306, and the P range, the R range, the N range, the D range, and the like are sequentially obtained. In order to shift from the P range in which the shift lever 300 is in the vertical state to another range, the shift lever knob button 308 is pressed to move the grooved pin 304 downward in the shift lever axial direction (direction of arrow B) to change the grooved pin. It is necessary for 304 to go over the convex portion 310 in the detent groove 308 of the detent plate 306.

Here, in order to prevent erroneous operation of the shift lever 300, the grooved pin 30 is pressed even when the shift lever knob button 308 is pressed when the brake is not stepped on.
4 so that it does not move downward in the axial direction of the shift lever,
A shift lock unit is provided to prevent shift changes from the P range to other ranges.

In the shift lock unit, as shown in FIGS. 11 and 12, a shift lock plate 318 is arranged to face a vertical piece 314 of a bracket 316 formed by bending a horizontal piece 312 and a vertical piece 314. The shift lock plate 318 is provided with two guide holes 320 above and below, and each guide hole 320 is a long hole in the vertical direction, and two vertical holes are provided on the vertical piece 314 corresponding to each guide hole 320. The guide pins 322 are fixed to the guide pins 320 by fitting in the guide holes 320, and the grooved pins 304 that engage with the engaging recesses 324 at the upper end of the shift lock plate 318 move in the shift lever axial direction. The shift lock plate 318 is guided so as to move in the same direction as the shift lock plate 318 moves downward.

A stopper 326 is arranged opposite to the horizontal piece 312. The stopper 326 has a stopper shaft 3 at an intermediate portion.
By rotating the stopper shaft 328 around the stopper shaft 328, the lock portion 327 at one end portion of the stopper 326 enters the lower end surface of the shift lock plate 318 and engages with the shift lock plate 318, and the lock portion. 32
7 comes out from the lower end surface of the shift lock plate 318 to obtain a separated state in which the shift lock plate 318 is separated from the shift lock plate 318.
In the engaged state, the shift lock plate 318 cannot be moved downward, the groove pin 304 is prevented from moving downward in the axial direction of the shift lever, and the shift cannot be changed from the P range to another range. In the disengaged state, the shift lock plate 318 is allowed to move downward, and the groove pin 304 is allowed to move downward in the shift lever axial direction. After the groove pin 304 moves downward in the shift lever axial direction, the shift lever 300 moves. By rotating the, the grooved pin 304 is moved to the shift lock plate 31.
8 is disengaged from the engagement recess 324 of the detent plate 3
It is possible to move to another range beyond the convex portion 310 of the detent groove 308 of 06.

A solenoid (stopper driving means) 330 is attached to the horizontal piece 312. A fitting hole 334 is provided at the tip of the plunger 332 of the solenoid 330.
Is formed, and the operation pin 336 protruding into the other end of the stopper 326 is fitted into the fitting hole 334. When the solenoid 330 operates, the plunger 332 retracts,
The stopper 326 rotates from the engaged state with the shift lock plate 318 to the disengaged state.

On the other hand, a shift lock control switch (detection switch) 338 is attached to the vertical piece 314. The shift lock control switch 338 is
Substrate 3 that houses contact holder 342 in switch cover 340 and has fixed contacts (not shown) on its inner surface
The lid is covered with 44. Contact holder 342
Includes an engagement pin 348 that engages with an engagement hole 346 of the shift lock plate 318.
18 and a moving contact 350 that is in contact with a fixed contact of the substrate 344 and is provided with a contact holder 34.
2 moves together with the shift lock plate 318, the moving contact 350 changes the fixed contact of the substrate 344 in contact therewith, and outputs the P range detection signal to detect the P range when the shift lock plate 318 is in the upper position. can do.

Although not shown, a shift lock control computer is separately provided, and the shift lock control computer is connected with the shift lock control switch 338 and the solenoid 330 through separate connectors 352 and 354, respectively. , Connected with a stop lamp switch. Shift is P
When in the range, and the brake is stepped on and the stop lamp switch is on, the solenoid 330 operates and even if the shift is in the P range, the brake is not pressed and the stop lamp switch is off. In this case, the shift change from the P range to another range is prevented when the solenoid 330 does not operate and the brake is not depressed.

Further, the shift lock unit is provided with a shift lock release lever (shift lock release portion) 354. The shift lock release lever 354 has an intermediate portion fitted to the tip end portion of the upper guide pin 322 of the guide pins 322, and is rotatable around the guide pin 322. The lower end portion of the shift lock release lever 354 engages with the operating piece 356 provided upright on one end portion of the stopper 326,
By pressing the operating portion 358 at the upper end of the shift lock release lever 354 against the torsion coil spring 360 and rotating the shift lock release lever 354, the solenoid 3
Even if 30 does not operate, the stopper 326 can be forcibly rotated in order to disengage from the shift lock plate 318.

[0010]

In the conventional shift lock unit described above, the shift lock plate 31 is used.
Since there are two guide pins 322 for moving and guiding 8 in the vertical direction, a large space is required accordingly, which causes an increase in size.

Further, since the shift lock release lever 354 is separately provided and has a structure to rotate, this also causes an increase in size. The number of parts is large and the cost is high.

Further, the solenoid 330 and the shift lock control switch 338 are connected to the shift lock control computer through separate connectors 352 and 354, respectively, so that the number of components is large and the size is also large. Cause.

In view of the above facts, the present invention has an object to provide a shift lock unit which is downsized.

[0014]

In order to solve the above-mentioned problems, the shift lock unit according to the present invention as set forth in claim 1 is an automatic transmission which is carried out by changing the engagement position of the grooved pin with the detent plate by operating the shift lever. A shift lock that engages the grooved pin to move by the axial movement of the shift lever of the grooved pin is required to shift the shift range of the transmission from the P range to another range. A guide means having a plate and a guide pin for allowing the shift lock plate to move in a direction perpendicular to the guide pin and rotatable about the guide pin, and the guide means is disengageable from the shift lock plate. First position in one direction of itself in the first pivot position of the plate From the first position to the second position, the shift lock plate separates from the shift lock plate at the first position, and the shift lock plate shifts from the first rotation position to the second rotation position in the direction opposite to the one direction. When the lock plate is disengaged and engaged with the shift lock plate, the shift lock plate cannot move in the direction perpendicular to the guide pin to prevent the groove pin from moving in the shift lever axial direction. Of the guide pin to allow the groove pin to move in the axial direction of the shift lever, stopper driving means for driving the stopper, and the shift lock plate from the second rotation position to the first rotation position. An urging means for urging rotationally toward the first lock position and a first rotating position of the shift lock plate, A shift lock plate which is rotationally biased abut the rotation restriction by the energizing means,
A guide portion that slidably guides a shift lock plate that is moved by axial movement of the grooved pin of the shift lever, and is integrally formed with the shift lock plate, and the shift lock plate from the first rotation position against the biasing means. Whether or not the shift lock plate is in the P range is detected based on the shift lock release portion for rotating to the second rotation position and the shift position of the shift lock plate. A detection switch for actuating the stopper driving means to prevent the shift change to the range.

According to a second aspect of the present invention, in the shift lock unit according to the first aspect, the stopper driving means is a solenoid, the plunger of the solenoid moves the stopper, and the solenoid head is the guide portion. Be embodied.

According to a third aspect of the present invention, in the shift lock unit of the second aspect, the detection switch includes a fixed contact and an engaging portion that engages with the shift lock plate and moves together with the shift lock plate. , A moving contact capable of contacting the fixed contact and moving together with the engaging portion, and further, the signal output connector pin formed on the detection switch signal output terminal and the shift lock plate of the engaging pin are in contact with each other in an engaged state. And a power input connector pin connected to the power input terminal of the stopper drive means via the contact means, and the signal output connector pin and the power input connector pin do not depress the detection switch and the stopper drive means and the brake pedal. In the state, the shift lock for controlling the stopper drive means is arranged to prevent the shift change from the P range to another range. In line with the controller, characterized in that the fittable with a single female connector.

[0017]

According to any one of the first to third aspects, the stopper moves to engage the shift lock plate in the first position and disengage from the shift lock plate in the second position. The stopper is driven by stopper driving means, and the detection switch detects whether or not it is in the P range.

When the brake pedal is depressed in the P range, the stopper is in the first position and is disengaged from the shift lock plate in the first rotation position. In the disengaged state, the shift lock plate is guided. It is possible to move in the direction perpendicular to the pin, the shift lock plate can be moved by moving the grooved pin in the shift lever axial direction, and the grooved pin is allowed to move in the shift lever axial direction. Therefore, the shift change from the P range to another range is allowed.

Even in the P range, when the brake pedal is not depressed, the stopper is in the second position and engages with the shift lock plate in the first rotating position. In the engaged state, the shift lock plate is engaged. Since the plate cannot move in the direction perpendicular to the guide pin, the shift lock plate cannot move due to the movement of the grooved pin in the shift lever axial direction, and the movement of the grooved pin in the shift lever axial direction is blocked. Therefore, the shift change from the P range to another range is prevented.

Here, the shift lock plate is urged to rotate around the guide pin from the second rotation position to the first rotation position and abuts on the guide portion, and the guide portion moves the grooved pin in the shift lever axial direction. Guides the sliding contact of the shift lock plate that moves in the direction perpendicular to the guide pin.

As a result, one guide pin is sufficient to guide the shift lock plate which is moved by axial movement of the grooved pin, and two guide pins are required to guide the shift lock plate. Compared with the above, the space can be saved and the size can be reduced.

When the shift lock releasing portion formed integrally with the shift lock plate is operated, the shift lock plate resists the biasing means and moves from the first rotation position to the second position.
It can be moved to the rotation position and separated from the stopper. This forcibly releases the shift lock.

As a result, as compared with the conventional structure in which the shift lock releasing portion is additionally provided and rotated, the size reduction becomes remarkable, the number of parts is reduced, and the cost is reduced.

According to the third aspect of the present invention, the power input connector pin is connected to the power input terminal of the stopper driving means through the contact means in the state where the detection switch is engaged with the shift lock plate. The power input connector pin and the signal output connector pin are fitted with a single female connector, and the stopper driving means, the detection switch, and the shift lock controller are wired.

As a result, a single male connector is sufficient on the shift lock unit side for wiring between the stopper drive unit and the detection switch and the shift lock controller, and the number of components is reduced accordingly. Further, the size is reduced as compared with the conventional one in which the detection switch and the detection switch require separate connectors.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the shift lock unit according to the present invention will be described with reference to FIGS.

In the shift lever device for the automatic transmission of the automobile, as shown in FIG. 2, when the shift lever 12 is rotated around the rotation shaft 13 at the lower end,
The grooved pin 14 that rotates together with the shift lever 12 changes the engagement position with the detent groove 18 of the detent plate 16 so that the shift can be changed. For example, by rotating the shift lever 12 in the arrow A direction from the P range in which the shift lever axial direction is the vertical direction, R
The range, the N range, the D range, etc. can be sequentially obtained, but in order to shift from the P range to another range, the shift lever knob button 22 provided on the shift lever knob 20 is pressed to move the grooved pin 14 to the shift lever shaft. It is necessary for the grooved pin 14 to move over the projection 24 formed in the detent groove 18 of the detent plate 16 by moving downward in the direction (direction of arrow B).

The shift lock unit prevents the groove pin 14 from moving downward in the axial direction of the shift lever even if the shift lever knob button 22 is pressed when the brake is not depressed, so that the shift range is changed from the P range to another range. It is provided to prevent the shift lever 12 from being erroneously operated.

In the shift lock unit, as shown in FIG. 1, FIG. 3 and FIG. 7, an upright plate-shaped bracket 26 is provided.
Further, the shift lock plate 28 is arranged to face each other, and a guide hole 30 (guide means) is formed in the upper end portion of the shift lock plate 28. The guide hole 30 is a long hole which is long in the vertical direction, and the bracket 26 is provided with a guide pin 32 (guide means) corresponding to the guide hole 30. Guide pin 32
Is fixed to the bracket 26 by caulking the base end portion of the bracket 26 through the opening 34 of the bracket 26, and the middle portion of the bracket 26 having the intermediate diameter through the guide hole 30 and the shift lock plate 28. The shift lock plate 28 is supported rotatably around the guide pin 32 (around the axis of the guide pin 32) and relatively slides in the guide hole 30 in the hole longitudinal direction, so that the shift lock plate 28 is moved in the longitudinal direction of the guide hole 30. Along the guide pin 32 is movably supported in the direction perpendicular to the guide pin 32 (direction perpendicular to the axial direction of the guide pin 32). Guide pin 3 that penetrates the guide hole 30
In order to prevent the guide pin 32 from escaping from the guide hole 30, a large-diameter portion 36 having a diameter larger than that of the guide hole 30 is provided at the distal end of
Is formed. A large diameter hole 38 is continuously formed at the lower end of the guide hole 30, and the large diameter portion 36 of the guide pin 32 can pass through the large diameter hole 38.

An engaging recess 40 is formed on the upper edge of the shift lock plate 28 at the side edge thereof.
The grooved pin 14 in the P range can be engaged, and in the engaged state of the grooved pin 14 with the engagement recess 40, the shift lock plate 28 is pushed by the grooved pin 14 as the grooved pin 14 moves in the axial direction of the shift lever. Move in the same direction.

A stopper 42 is attached to the surface of the bracket 26 on which the shift lock plate 28 is arranged. The stopper 42 is rotatable around a stopper shaft 44 that penetrates the lower end portion. The stopper shaft 44 is
The base end penetrates the opening 46 of the bracket 26 and is caulked and fixed. At the first movement position of the stopper 42, the upper end portion of the stopper 42 enters the lower end surface of the protrusion 48 (engagement portion) projectingly formed on the shift lock plate 28 and engages with the shift lock plate 28 ( 3) is obtained, and at the second movement position of the stopper 42, the upper end portion of the stopper 42 has the protrusion 4 of the shift lock plate 28.
A detached state (state of FIG. 4) is obtained in which the shift lock plate 28 is detached from the lower end surface of the roller 8.

In the engaged state, the shift lock plate 28
Of the grooved pin 14 is prevented, the movement of the grooved pin 14 downward in the axial direction of the shift lever is prevented, and the shift cannot be changed from the P range to another range. In the disengaged state, the shift lock plate 28 can be moved downward (the shift lock plate 28 can be moved from the position shown by the chain line in FIG. 4 to the position shown by the solid line), and the groove pin 14 is moved downward in the shift lever axial direction. To move to.
After the grooved pin 14 is moved downward in the axial direction of the shift lever, the shift lever 12 is rotated to disengage from the engaging recess 40 of the shift lock plate 28 so that the protruding portion 24 of the detent groove 18 of the detent plate 26 is removed. You can cross it and move to another range.

Further, on the bracket 26, a solenoid 50 constituting a stopper driving means is attached to the surface on the side where the shift lock plate 28 is arranged. The movement direction of the plunger 52 (movement drive shaft) of the solenoid 50 is a horizontal direction intersecting the movement direction (vertical direction) of the shift lock plate 28.

At the tip of the plunger 52 of the solenoid 50, a fitting pin 5 which is horizontal in the direction perpendicular to the axis of the plunger 52 is provided.
4 is projected to the left and right sides as viewed from the axial direction of the plunger 42, and a U-shaped fitting concave portion 56 formed at the upper end portion of the stopper 42 is fitted into the fitting pin 54. A cushion 58 is interposed between the fitting pin 54 and the fitting recess 56, and the cushion 58 is composed of a cylindrical portion 60 fitted to each fitting pin 54 and a connecting piece 62 connecting the cylindrical portions 60. It is composed integrally.

When the solenoid 50 is not energized and does not operate, the plunger 52 is in the pulled-out position and the stopper 42 is in engagement with the projecting piece 48 (state in FIG. 3).
As shown in FIG. 4, when the solenoid 50 operates and the plunger 52 retracts in the direction of the arrow D, the stopper 42 is disengaged from the engagement state with the projection 48 of the shift lock plate 28 (from the state of FIG. To the state (1) in the direction of arrow E.

The protrusion 4 of the shift lock plate 28
The engaging surface 64 of the stopper 42 that abuts and engages with the lower end surface of 8
Is a circular arc surface centering on the stopper shaft 44, the stopper 42 contacts the lower end surface of the protrusion 48 of the shift lock plate 28 during rotation of the stopper 42 while the stopper 42 is engaged with the shift lock plate 28. The height position can be unchanged. Further, the protruding piece 48 of the shift lock plate 28 that moves downward when the stopper 42 is separated from the protruding piece 48.
The release surface 66 of the stopper 42 facing the stopper 42
When the engaging surface 50 of the stopper 42 is inclined from the lower end surface of the projecting piece 48 by tilting in the engaged state so as to be a vertical surface in the disengaged state from the shift lock plate 28, the further stopper 42 is formed. Immediately, the shift lock plate 28 is free to move downward without rotating.

The tip of the guide pin 32 has a split groove 68 and is further extended. The extension 70 has a twisted coil spring 7.
2 (biasing means) is fitted, one end of the torsion coil spring 64 is locked in the split groove 68 of the extending portion 70, and the other end is
U-shaped recess 74 protruding from the shift lock plate 28
Locked inside. With the torsion coil spring 72, the shift lock plate 28 is urged to rotate around the guide pin 32 in the direction of arrow C (see FIG. 3) from the second rotation position toward the first rotation position. In the first rotation position, the side edge of the lower end portion of the shift lock plate 28 is a guide projection (guide portion) 78 on the front surface of the solenoid head 76 (as shown in FIG. 1, two projections are provided on the front surface of the solenoid head 76). However, the protrusion on the bracket 26 side comes into contact with the guide protrusion 78), the rotation is restricted, and the shift lock plate 28 moves by the movement of the grooved pin 14 in the axial direction of the shift lever.
Is guided in sliding contact with the guide protrusion 78.

On the upper end of the shift lock plate 28, a shift lock releasing rod 80 as a shift lock releasing portion is integrally raised. As shown in FIG.
The shift lock release rod 80 is operated to move the shift lock plate 28 from the first rotation position around the guide pin 32 against the torsion coil spring 72 in the arrow F direction (projection piece 46).
And the moving direction of the stopper 42 (see FIG. 4).
When it is rotated in the direction opposite to the arrow E) shown in FIG. 2), the protrusion 48 separates from the engagement surface 64 of the stopper 42 at the second rotation position,
In the disengaged state, the shift lock plate 28 tilts (the longitudinal direction of the guide hole 30 faces the direction tilted from the vertical direction), and in this tilted state, the shift lock plate 28 moves in the direction perpendicular to the guide pin to shift the shift lever shaft of the grooved pin 14. The downward movement in the direction (movement from the position indicated by the solid line in FIG. 5 to the position indicated by the chain line) is allowed.

Even if the solenoid 50 does not operate, the stopper 42 can be forcibly moved to disengage from the shift lock plate 28.

The solenoid coil 80 is supported between an upper wall 82 and a lower wall 84 of a support frame 86 having an upper wall 82 and a lower wall 84. Mounting pieces 88 project from the upper wall 82 and the lower wall 84 toward the bracket 26, and the mounting pieces 88 are caulked through the openings 90 of the bracket 26 to mount the solenoid 50 on the bracket 26. Done.

As shown in FIGS. 1 and 6, the solenoid 5
A shift lock control switch 92, which constitutes a detection switch, is attached to 0. The shift lock control switch 92 accommodates the contact holder 96 in a rectangular box-shaped switch cover 94 that is located opposite to the shift lock plate 28 and whose opposite side opposite to the shift lock plate 28 is open, and the switch cover 94 is opened. A board 98 having fixed contacts (not shown) on its inner surface is elastically fitted to the portion, and the switch cover 94 is covered by the board 98. The contact holder 96 is formed on the bottom of the contact holder 96 in order to further bend the protrusion 48 of the shift lock plate 28 to engage with the engagement hole 102 formed in the switch facing piece 100 facing the switch cover 94. The engagement pin 106 is provided so as to penetrate through the elongated hole 104 extending in the up-down direction, and the engagement of the engagement pin 106 with the engagement hole 102 enables the shift lock plate 28 to move in the up-down direction. The contact holder 96 also includes a moving contact 108 for contacting the fixed contact of the substrate 98 so that when the shift lock plate 28 is in the upper position and when the shift lock plate 28 is in the lower position. It is possible to output the detection signal by detecting whether or not it is in the P range by changing the fixed contact in contact with. The engagement hole 102 is a long hole that is long along the axial direction of the plunger 52 of the solenoid 50.
The end on the side opposite to 0 is open, and the position of the shift lock control switch 92 with the stopper 42 can be easily adjusted by the amount that the engagement pin 106 can relatively move along the longitudinal direction of the engagement hole 102. There is.

As shown in FIG. 6, an extension plate 110 extending toward the solenoid coil 80 is integrally formed on the substrate 98, and the extension plate 110 is positioned so as to cover the side of the solenoid coil 80 opposite to the bracket 26. A bent sandwiching piece 112 is formed at the upper and lower ends of the extension plate 110, and the sandwiching piece 112 elastically sandwiches the upper wall 82 and the lower wall 84 of the support frame 86 of the solenoid 50, and sandwiches them. In the state, the upper wall 8 of the support frame 86 of the solenoid 50
2, the lower wall 84 and the locking projections 114 and the locking recesses 116 formed between the sandwiching pieces 112 are locked, whereby the engagement pin 106 of the contact holder 96 is locked. Engaging hole 1 of the switch facing piece 100
Shift control switch 92 when engaged with 02.
Is attached to the solenoid 50.

On the surface of the extension plate 110 opposite to the solenoid 50, a rectangular connector tube 118 is formed so as to project.
The extension plate 1 is connected to the fixed contact of the substrate 98 to extend from the substrate 98.
The signal output connector pin 120 is formed at the signal output terminal passing through the thickness of the signal output terminal 10.
0 rushes into the inside of the cylinder from the thickness of the bottom of the connector cylinder 118.

At the power output terminal of the solenoid 50, a terminal plate 124 elongated in the axial direction of the plunger 40 is formed. On the surface of the extension plate 110 of the shift lock control switch 92 that faces the solenoid coil 50, a long plate-shaped contactor 128 (a terminal plate 156 and a connecting means together with the terminal plate 156 are provided in the opening 126 of the extension plate 110). (Constituted) is cantilevered and supported by rivets 130.
With the shift lock plate 28 attached, the projection 132 at the tip of the contactor 128 is elastically biased into contact with the terminal plate 124.

A power input connector pin 122, which is connected to the contactor 158 and the extension plate 156 in the wall thickness, is inserted into the connector tube 118 along with the signal output connector pin 120 from the wall thickness of the tube bottom. is doing. The signal output connector pin 120 and the power input connector pin 122 are
A male connector is formed, and the solenoid 50, the shift lock control switch 92, and the shift lock control computer (not shown) can be connected by a single female connector for wiring.

A stop lamp switch (not shown) is further connected to the shift lock control computer. According to the shift lock control computer, when the shift is in the P range, the shift lock control switch 92 is on, and the brake is stepped on and the stop lamp switch is on, the solenoid 50 is energized to operate. Even if the shift is in the P range and the shift lock control switch 92 is on, if the brake is not depressed and the stop lamp switch is off, the solenoid 50 is not energized and is controlled not to operate. When the brake is not depressed, the shift change from the P range to another range is blocked. In the shift control computer, when the shift lock plate 28 moves downward together with the grooved pin 14 to reach the lower position, the solenoid 50 is controlled so that the power supply to the solenoid 50 is stopped. The plunger 52 is constantly biased in the pull-out direction by a spring in the solenoid (not shown; biasing means for pulling-out direction, may be outside the solenoid). When the solenoid 50 is de-energized, the plunger 52 can be pulled out by the solenoid internal spring.
Is in the lower position, the protruding piece 48 has entered the movement path of the stopper 42, so that the release surface 66 of the stopper 42 is restricted by the protruding piece 48 so that the plunger 52 is prevented from being pulled out. When the grooved pin 14 again engages with the engaging recess 40 of the shift lock plate 28 and moves upward, and accordingly the shift lock plate 28 moves upward and reaches the upper position (position in FIG. 4), the protruding piece 48 is retracted from the movement path of the stopper 42, the plunger 52 is pulled out, the engaging surface 64 enters the lower surface of the protruding piece 48, and the stopper 42 and the shift lock plate 28 are brought into an engaged state.

The engagement position of the grooved pin 14 with the engagement recess 40 of the shift lock plate 28 is deviated from the vertical line passing through the guide pin 32, and when the shift lock plate 28 is pushed downward by the grooved pin 14, The shift lock plate 28 includes the shift lock plate 28.
A rotational biasing force is applied around the guide pin 32 so that the side end of the guide pin is pressed against the protrusion 78 on the front surface of the solenoid head 76.

The bracket 26 is made of metal, and the shift lock plate 28, the stopper 42, the shift lock control switch 98 (moving contact 86, fixed contact 79).
(Except for the conductive parts such as) can be made of synthetic resin.

A mounting hole 134 for mounting on the shift lock device is formed at the lower end of the bracket 26.

According to the above construction, the solenoid 50 drives the stopper 42 which is disengageably moved with the shift lock plate 28, and the shift lock control switch 92.
Detects whether or not it is in the P range according to the moving position of the contact holder 96 that engages with the shift lock plate 28 and moves with it. The solenoid 50 and the shift lock control switch 92 are connected to the shift lock controller, and the shift controller is the solenoid 5
Control 0.

When the brake pedal is depressed in the P range, the stopper 42 separates from the shift lock plate 28, and in the separated state, the grooved pin 14
The shift lock plate 28 can be moved in the same direction by moving the shift lever axially downward, and the groove pin 14 is allowed to move downward in the shift lever axial direction. Therefore, the shift change from the P range to another range is allowed.

Even in the P range, the stopper 42 engages with the shift lock plate 28 when the brake pedal is not depressed, and in the engaged state, the shift lock is caused by the groove pin 14 moving downward in the shift lever axial direction. Since the plate 28 cannot move in the same direction, the grooved pin 14 is prevented from moving downward in the shift lever axial direction. Therefore, the shift change from the P range to another range is prevented.

The shift lock plate 28 is urged to rotate around the guide pin 32 and comes into contact with the guide protrusion 78 of the solenoid head 76. The shift lock plate 28, which is moved by the movement of the grooved pin 14 in the axial direction of the shift lever, is slidably contacted with the guide protrusion 78 of the solenoid head 76 and guided in the direction perpendicular to the guide pin 32.

As a result, one guide pin 32 is sufficient to guide the shift lock plate 28, and two guide pins are required to guide the shift lock plate. Space can be realized and miniaturization can be achieved.

The contact of the shift lock plate 28 is not limited to the guide protrusion 78 of the solenoid head 76, but other portions of the fixing portion of the solenoid 50 may be used as guide portions or a part of the bracket may be guided. It is possible to have a division. According to the fact that the shift lock plate 28 contacts the guide protrusion 78 of the solenoid head 76,
The point contact is performed, and the movement resistance of the shift lock plate 28 is reduced.

Further, since the shift lock releasing rod 80 is formed integrally with the stopper 42, the downsizing becomes remarkable as compared with the conventional one which is separately provided with the stopper and rotates, and the number of parts is increased. And the cost is reduced.

The shift lock releasing portion is not limited to the shift lock releasing rod 80.

Further, the power input connector pin 122 and the signal output connector pin 120 are fitted with a single female connector, and the solenoid 50, the shift lock control switch 92 and the shift lock controller are wired.

Therefore, for wiring between the shift lock control switch 92 and the solenoid 50 and the shift lock control switch 92, on the shift lock control switch 92 side, a male connector (connector cylinder 118,
The power input connector pin 122 and the signal output connector pin 120 in the cylinder constitute a male connector), and a solenoid and a shift lock control switch require separate connectors, respectively, as compared with the conventional one. As a result, the number of components is small and the size can be reduced.

Regardless of whether the shift lock control switch 92 is attached to the solenoid 50 or not, the power input connector pin 122 and the signal output connector pin 120 are aligned to form a male connector, and the shift lock control is performed. The contactor 128 presses the terminal plate 124 formed on the power input terminal of the solenoid 50 when the switch 92 is attached to the solenoid 50, so that the contactor 128 and the terminal plate 124 are connected to each other particularly in the longitudinal direction of the terminal plate 124. It is possible to eliminate the need to obtain excessive positional relationship accuracy.

Next, a second embodiment of the shift lock unit will be described with reference to FIGS. 8 and 9. In the first embodiment, the signal output connector pin 120 and the power output connector pin 12
2 is provided on the shift lock control switch 92 side, and the power output connector pin 122 and the solenoid 50 are provided.
In the present embodiment, the power output connector pin 202 is connected to the power output terminal of the solenoid 200 toward the extension plate 206 of the shift lock control switch 204. When the shift lock plate 28 is attached, the power input connector pin 202 is formed so as to project.
It penetrates through the through hole 210 formed in the bottom of the cylinder and projects into the connector cylinder 208. As a result, the signal output connector pin 120 and the power output connector pin 202 are positioned side by side in the connector tube 208. The signal output connector pin 120 and the power output connector pin 202 that are aligned in this position
Is capable of being fitted with a single female connector, and the wiring between the solenoid 200 and the shift lock control switch 204 and the shift lock control computer is made through the female connector. This is the same as in the first embodiment.

The shift lock control switch 202 has a plate-like mounting member 212 and is used for the solenoid 200.
Support frame 218 (corresponding to the support frame 86 of the first embodiment)
It is attached so that it can be sandwiched. The mounting tool 212 has an inverted T-shaped mounting hole 214 having a narrow upper side and a wide lower side at the upper end and a mounting hole 216 having an open lower end at the lower end. On the other hand, solenoid 2
00, a mounting piece 224 is formed on the upper wall 220 and the lower wall 222 of the support frame 218 on the opposite side of the bracket 26, and the middle portion of each mounting piece 224 is narrow. The attachment piece 224 located above is attached to the attachment 2
12 is inserted into the wide lower side of the mounting hole 214, and the mounting piece 224 located below is attached to the mounting tool 2
After being inserted into the mounting holes 216 of the mount 12,
If 22 is shifted downward, the narrow middle portion of the upper mounting piece 224 is fitted into the narrow upper side of the mounting hole 214 of the mounting tool 122, and the narrow middle portion of the lower mounting piece 224 is mounted to the mounting tool. The protrusion 226 at the open end of the mounting hole 216 of 212 is elastically clamped. As a result, the mounting member 212 is mounted, and the extension plate 206 of the shift lock control switch 204 is sandwiched between the mounting frame 212 and the support frame 218 of the solenoid 200. Shift lock control switch 204 to solenoid 20
To remove from 0, the fitting 212 may be displaced upward. The extension plate 208 is formed with a rectangular cutout 228 that penetrates the attachment piece 224.

The other structure is the same as that of the first embodiment. According to the configuration of this embodiment, the power input connector pin 202 of the solenoid 200 is on the solenoid 202 side, and the signal output connector pin 120 of the shift lock control switch 204 is on the shift lock control switch 204 side. When the engagement pin 106 of the contact holder 96 of the shift lock control switch 204 is engaged with the engagement hole 102 of the switch facing piece 100 of the shift lock plate 28 and the shift lock control switch 92 is attached to the solenoid 50, power input is performed. The connector pin 202 and the signal output connector pin 120 are positioned side by side, and are fitted by a single female connector, and the solenoid 50, the shift lock control switch 204, and the shift lock controller are wired.

Therefore, when wiring between the solenoid 200 and the shift lock control switch 204 and the shift lock controller, a single male connector is sufficient on the shift lock control switch 204 side, and the solenoid and the shift lock control switch are separate. Compared with the conventional type that requires a connector, the number of components is small and the size can be reduced.

Further, the power input connector pin 202 with the engagement pin 106 of the contact holder 96 of the shift lock control switch 204 engaged with the engagement hole 102 of the switch facing piece 100 of the shift lock plate 28.
And the signal output connector pin 120 are positioned side by side,
Conversely, power input connector pin 2 to form a male connector
If 02 is aligned with the signal output connector pin 120,
To attach the shift lock control switch 204 by engaging the engagement pin 106 with the engagement hole 102,
The shift lock control switch 204 can be easily positioned.

In particular, since the power input connector pin 202 penetrates the through hole 210 at the bottom of the connector cylinder 208 and projects into the cylinder, the shift lock control switch 20
The positioning of 4 can be performed accurately.

The point at which the power input connector pin 202 and the signal output connector pin 120 are arranged side by side with the shift lock control switch 92 attached to the solenoid 50, and the shift lock control switch 2
Other functions and effects obtained in this embodiment are the same as those in the first embodiment except that 04 is attached to the solenoid 200 by the attachment 212.

The present invention is not limited to the above embodiments, but can be variously modified. For example, in each of the above embodiments, the guide pin 32 is provided on the bracket 26 side and the guide hole 30 is provided on the shift lock plate 28 side. Conversely, the guide pin 32 is provided on the shift lock plate 28 side and the guide hole is provided. 30 may be provided on the bracket 26 side.

A torsion coil spring 7 is used as the urging means.
However, the present invention is not limited to this, various means are possible, and the mounting position is arbitrary. However, it suffices if the shift lock plate can be biased to rotate around the guide pin.

Further, the stopper driving means is not limited to the solenoid, and other means can be used, and the detection switch is not limited to the shift lock control switch of each of the above embodiments. Engage the shift lock plate,
It suffices if the P range can be detected by the movement position of the shift lock plate.

When the solenoid is operated, the stopper is disengaged from the shift lock plate. On the contrary, when the solenoid is operated, the stopper is engaged with the shift lock plate. The operation of the solenoid may be stopped while the brake pedal is being depressed.

Further, the stopper 42 may have a structure of linear movement instead of the structure of rotating, and for example, it is not attached to the bracket 26 but the solenoid 5 is used.
It may be attached to the plunger 52 of 0,200. Further, in each of the above-mentioned embodiments, the shift lock unit of the shift lever device of the automatic transmission of the automobile has been described, but the present invention is not limited to the automobile.

[0073]

According to the shift lock unit of the present invention according to claims 1 to 3, one guide pin is sufficient to guide the shift lock plate which is moved by the axial movement of the shift lever of the grooved pin. The space can be saved and the size can be reduced.

When the shift lock releasing portion formed integrally with the shift lock plate is operated, the shift lock plate resists the biasing means and moves from the first rotation position to the second rotation position.
It is possible to move to the rotating position and disengage from the stopper, the size reduction becomes remarkable, the number of parts is reduced, and the cost is reduced.

According to the third aspect of the shift lock unit of the present invention, a single male connector is sufficient on the shift lock unit side for wiring between the stopper drive means and the detection switch and the shift lock controller. As a result, the number of components is small and the size can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a shift lock unit according to a first embodiment of the present invention.

FIG. 2 is a front view of a shift lever device of an automatic transmission of a vehicle to which the shift lock unit of the first embodiment is applied.

FIG. 3 shows the shift lock unit of the first embodiment,
It is a front view shown except a shift lock control switch.

FIG. 4 is a front view showing a state in which the solenoid is operated and the stopper is separated from the shift lock plate in FIG.

5 is a front view showing a state where a shift lock release rod is operated in FIG. 3. FIG.

FIG. 6 is a front view showing a state in which a shift lock control switch is attached to a solenoid in FIG.

FIG. 7 is an assembled perspective view of the shift lock unit according to the first embodiment.

FIG. 8 is a perspective view showing a part of a shift lock unit according to a second embodiment.

FIG. 9 is an assembled perspective view of a shift lock unit according to a second embodiment.

FIG. 10 is a front view of a shift lever device of an automatic transmission of an automobile to which a conventional shift lock unit is applied.

FIG. 11 is an assembled perspective view of a conventional shift lock unit.

FIG. 12 is an exploded perspective view of a conventional shift lock unit.

[Explanation of reference numerals] 12 shift lever 14 grooved pin 16 detent plate 28 shift lock plate 30 guide groove (guide means) 32 guide pin (guide means) 42 stopper 50, 200 solenoid (stopper drive means) 52 plunger (movement of stopper drive means) Drive shaft) 78 Solenoid head (guide part) 80 Shift lock release rod (shift lock release part) 92, 204 Shift lock control switch (detection switch) 106 Engagement pin 108 Moving contact 120 Signal output connector pin 122, 202 Power input connector Pin 128 contactor

Claims (3)

[Claims] 1. A shift lever axial change of a grooved pin is performed to shift from a P range to another range in a shift change of an automatic transmission performed by changing an engaging position of a grooved pin with a detent plate by operating a shift lever. It has a shift lock plate that engages with the groove pin to move by the axial movement of the shift pin of the grooved pin that requires movement, and a guide pin, and the shift lock plate is movable in the direction perpendicular to the guide pin and around the guide pin. And a shift lock plate that is disengageable with the shift lock plate. When the shift lock plate moves from a first position to a second position in one direction of the shift lock plate, the shift lock plate moves. And at the self's first position By rotating the shift lock plate from the first rotation position to the second rotation position in the opposite direction, the shift lock plate is disengaged from the shift lock plate, and in the engagement state with the shift lock plate, the shift lock plate moves in the direction perpendicular to the guide pin. The movement is disabled to prevent movement of the grooved pin in the shift lever axial direction,
A stopper that allows the shift lock plate to move in the direction perpendicular to the guide pin and allows the groove pin to move in the axial direction of the shift lever in the separated state from the shift lock plate, stopper driving means for driving the stopper, and the shift lock plate A biasing means for biasing the shift from the two rotation positions toward the first rotation position and a shift lock plate that is biased by the biasing means at the first rotation position of the shift lock plate. A guide portion for slidingly guiding a shift lock plate that is restricted by contact rotation and moves by axial movement of the grooved pin of the shift lever; and a guide portion that is integrally formed with the shift lock plate and that resists the biasing means to the shift lock plate. A shift lock releasing portion for rotating from the first rotation position to the second rotation position, and movement of the shift lock plate And a detection switch for activating the stopper driving means to prevent shift change from the P range to another range when the brake pedal is not depressed. A shift lock unit characterized in that. 2. The stopper drive means is a solenoid, and a plunger of the solenoid moves the stopper,
The shift lock unit according to claim 1, wherein a solenoid head serves as the guide portion. 3. The detection switch has a fixed contact, an engaging portion that engages with the shift lock plate and moves with the shift lock plate, and a moving contact that can contact the fixed contact and moves with the engaging portion. Further, the signal output connector pin formed on the detection switch signal output terminal is connected to the power input terminal of the stopper driving means through the contact means that contacts the shift lock plate of the engagement pin in the engaged state. It has a power input connector pin, and the signal output connector pin and the power input connector pin are a detection switch and a stopper drive means, and a stopper drive for preventing shift change from the P range to another range when the brake pedal is not depressed. Wiring with the shift lock controller for controlling the means enables mating with a single female connector The shift lock unit according to Motomeko 2.