JPH0641872Y2 - Selector lever locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a selector lever locking device that locks a selector lever during parking.

<Prior Art> In an automatic transmission of a vehicle, parking (P), reverse (R), neutral (N), drive (D), It can be switched to each low speed (I, II) range.

Since the conventional selector lever can be moved even when the vehicle is parked, if the selector lever is accidentally operated to another position when the selector lever is parked and stopped on a slope, the vehicle will There was a danger that it would start moving.

In order to avoid such inconvenience, a device for locking the selector lever when the vehicle is parked is considered, and an interlock type device is an example thereof.
It is disclosed in the publication.

With this locking device, the key cannot be removed from the key cylinder unless the selector lever is set to the parking position, and when the selector lever is in the parking position and the key is removed from the key cylinder, the selector lever is locked in the parking position and moved to another position. It prevents the shift of.

Specifically, when the selector lever is set to the parking position, the detent pin provided at the rod tip inside the selector lever fits into the parking recess of the detent plate. While the notch is engaged, the rotation of the bell crank moves the casing or rod connected to the other end, and the slider connected to the other end of the cable etc. moves, enabling the key cylinder to rotate. Become. When the key cylinder is rotated to the locked position and the ignition key is removed, the slider is indirectly restrained by the key cylinder.
That is, the bell crank is held in a state in which the notch is engaged with the detent pin in the parking position.

Therefore, even if the button provided on the selector lever is pressed in this state, the day tent pin cannot hit the notch of the bell crank and move down, and the selector lever is locked at the parking position.

<Problems to be Solved by the Invention> By the way, in the selector lever locking device having the above-mentioned configuration,
The bell crank is used to hold the detent pin at the parking position. In that case, the relationship between the cable and the stroke of the detent pin is determined by the lever ratio of the bell crank, and as shown by the broken line in Fig. 4, Be correct. Therefore, in the parked state, even if the button of the selector lever is pressed, the detent pin should not be pulled out and should be held in the parking position. was there.

Further, since a cable or the like is connected to the other end side of the bell crank having a notch at the tip, there is a problem in that there is a restriction on the outlet for the cable or the like, and the design is restricted.

<Means for Solving the Problems> A selector lever locking device according to the present invention for solving the above problems selectively engages a detent pin supported by a selector lever with a recess for each range of a detent plate. In a lock device for the selector lever in an automatic transmission, a ring cam rotatably fitted to the selector lever engages with the detent pin or an operation pin integrated with the selector lever, and the stroke of the detent pin or operation pin. And a cam groove formed on the ring cam such that the relationship between the rotation amount of the ring cam and the rotation amount of the ring cam is non-linear, a first engaging member integrally provided on the ring cam, and fitted to the first engaging member. And one end is locked or unlocked by locking or unlocking the ignition key It has a 2nd engaging member with which the other end of a connecting member was connected.

<Operation> According to the selector lever lock device having the above configuration, when the selector lever is parked and the ignition key is locked, the ring cam is constrained, so that the detent pin can also be constrained by the cam groove and descend. Absent. Also, by specifying the shape of the cam groove, the initial movement of the detent pin with respect to the operation connecting member can be reduced, and even when the operation connecting member is stretched, the parking lock position of the detent pin can be reduced. It is possible to prevent it from coming off.

<Embodiment> FIG. 1 shows a schematic side surface of a selector lever locking device according to the present invention, and FIG. 2 shows a cross section taken along the line II-II thereof.

Reference numeral 1 denotes a selector lever, the lower part of which is pivotally attached to a bracket 2 attached to the vehicle body side and is rotatable in the front-rear direction of the vehicle. The upper portion of the selector lever 1 extends into the vehicle compartment through an indicator panel 3 that is integral with the bracket 2.

In the bracket 2, there is provided a detent plate 4 in which recesses for locking corresponding to each range position are continuously formed. In the figure, 4p, 4r, 4d are for parking, backward,
It is a recess for the drive. On the other hand, a rod 8 that can be lowered against the spring force of a spring by pushing the button 6 of the knob portion 5 is inserted into the selector lever 1, and the rod 8 engages with the concave portion of the detent plate 4. A detent pin 9 to be fitted is supported. The spring exerts an upward spring force on the rod 8 and serves to hold the detent pin 9 in the recess. The selector lever 1 is connected to the transmission side via a control cable (not shown).

A ring cam 10 is rotatably fitted to the selector lever 1 at a position corresponding to the detent pin 9. In the figure, reference numerals 11 and 12 denote restricting members attached to the selector lever 1, and the ring cam 10 is rotatably held by these restricting members. A cam groove 13 is formed diagonally on the ring cam 10,
The detent pin 9 is fitted and engaged here. Also,
The ring cam 10 is integrally formed with a hook 14 as a first engaging member.

On the other hand, a cable end 15 as a second engaging member that fits into the hook 14 is slidably supported in a horizontal plane. One end of an operation cable 17 as an operation connecting member is connected to the cable end 15.

As shown in FIG. 5, the operation cable 17 is connected to a mover 19 on the side of the key cylinder through a cable guide 18. The ignition key 21 cannot be removed unless the key cylinder 22 is rotated to the lock position.However, when in the lock position, the protrusion 20a of the locking member 20 integral with the key cylinder 22 blocks the moving direction of the mover 19, The movement of the mover 19 is restricted (see the state of FIG. 5 (a)). Further, if the ignition key 21 is inserted into the key cylinder 22 and the key cylinder is located at a position other than the lock position, the recess 20b instead of the protrusion 20a is located in the moving direction of the mover 19, and the mover 1
It becomes possible to move 9 (see the state of FIG. 5 (b)).

When the button 6 of the selector lever 1 located at a position other than the parking range is pressed to rotate the selector lever 1 to the parking position,
The hook 14 integral with the ring cam 10 is fitted to the cable end 15 as shown by the chain double-dashed line in FIG. At this time, the cam groove 13 of the ring cam 10 is at the position shown by the two-dot chain line in FIG. On the key cylinder side, the key cylinder 22 is in a position other than the lock position. That is, as indicated by the chain double-dashed line in FIG. 2, the mover 19 has entered the recess 20b of the locking member 20, and the key cylinder 22 cannot rotate.

When the button 6 is released from the above state, the detent pin 9 rises due to the spring force of the spring, and the detent plate 4
Fit into the parking recess 4p. At this time, the ring cam 10 rotates in the direction shown by the arrow A in FIGS. 1 and 2 due to the engagement of the detent pin 9 and the cam groove 13 due to the rise of the detent pin 9, and the cam groove 13 is shown by the solid line in FIG. It becomes the state shown. When the ring cam 10 rotates, the operation cable 17 is pushed by the hook 14 and moves together with the cable end 15, and the mover 19 is disengaged from the recess 20b of the locking member 20 and comes to the position shown by the solid line in FIG. . Therefore, it becomes possible to rotate the key cylinder 22, and by rotating the key cylinder 22 to the lock position by the ignition key 21, the locking member 20 rotates together and the protrusion 20 a in the moving direction of the mover 19.
Is positioned, and movement of the mover 19 toward the cable 17 side is restricted. That is, the ring cam 10 is held at the position shown by the solid line in FIGS. 1 and 2 through the engagement of the cable 17, the cable end 15 and the hook.

In the above state, even if the button 6 of the selector lever 1 is pressed, the ring cam 10 is constrained and cannot rotate, so that the detent pin 9 hits the cam groove 13 and is prevented from descending. That is, the day tent pin 9 does not come out of the parking recess 4p.

By specifying the cam groove 13 of the ring cam 10 as shown in FIG. 3, the stroke of the detent pin 9 with respect to the stroke of the ring cam 10 (stroke of the cable 17) can be made non-linear as shown in FIG. In such a case, even if the operation cable 17 is slightly stretched or its support bracket is loose, when the movement amount of the cable 17 is small, the movement amount of the daytent pin 9 is small. Since the size is further reduced, the detent pin 9 will not come out of the parking recess 4p even if the button 6 of the selector lever 1 in the parking lock state is pressed when the operation cable 17 is slightly stretched. Absent. That is, the vehicle is reliably held in the parking lock state.

When shifting from the parked state to another state, for example, when starting from the parked state, the key is inserted into the key cylinder 22 to be in the start position. As a result, the locking member 20 rotates together with the key cylinder, and the recess 20b is formed in the mover 19.
Responds, and the restraint of the mover 19 is released.

In this state, if the button 6 of the selector lever 1 is pressed, the detent pin 9 rotates the unrestricted ring cam 10 in the direction of the arrow B and descends to come out of the parking recess 4p, and the first, second It comes to the position shown by the chain double-dashed line in the figure. After that, by moving the selector lever 1 forward, it is possible to shift to a desired range. By the movement of the selector lever 1, the hook 14 is disengaged from the cable end 15, and the cable end 15 stands by at that position for shifting to the next parking position.

In the above embodiment, the detent pin 9 is directly used as the cam ring.
Although it is used as the operation pin of 10, the operation pin may be provided on the selector lever separately from the detent pin 9, and a ring cam or the like may be attached to this pin. First
The first and second engaging members may have a concave-convex relationship opposite to that in the above-described embodiment, and the concave portion may have a tapered inlet portion so that the fitting can be smoothly performed. The shape of the cam groove provided on the ring cam is also an example, and various shapes can be selected according to the required movement.

Further, in the above-mentioned embodiment, the one using the cable as the operation connecting mechanism is mentioned, but the one using the rod, the one combining the cable and the rod and the like can be used in addition to the cable.

<Effect of the Invention> According to the selector lever lock device of the present invention, the detent pin is locked at the parking position by using the cam groove of the ring cam. The stroke can be made non-linear, so that the day tent roller will not come out of the parking recess during parking lock even if there is some extension or play on the operation connecting member side. Further, since the first locking member is provided on the circumference of the ring cam, it is possible to give the cable outlet a degree of freedom, which is advantageous in design.

[Brief description of drawings]

FIG. 1 is a schematic side view of an embodiment of a selector lever locking device according to the present invention, FIG. 2 is a sectional view taken along the line II-II, FIG. 3 is a side view of a ring cam, and FIG. Graph showing the relationship between stroke and detent pin, No. 5
The figures show different operating states of the ignition key. In the drawings, 1 is a selector lever, 4 is a detent plate, 4a is a parking recess, 9 is a detent pin, 10 is a ring cam, 13 is a cam groove, 14 is a hook, 15 is a cable end, 17 is an operation cable, and 19 is movable. Is a child.

Claims (1)

[Scope of utility model registration request] 1. A lock device for a selector lever in an automatic transmission, wherein a detent pin supported by a selector lever is selectively engaged with a recess for each range of a detent plate, wherein the selector lever is rotatably fitted to the selector lever. Is formed on the ring cam such that the ring cam and the operation pin integrated with the detent pin or the selector lever are engaged with each other and the relationship between the stroke of the detent pin or the operation pin and the rotation amount of the ring cam is non-linear. A cam groove, a first engaging member integrally provided on the ring cam, and an operation for engaging or disengaging the first engaging member and locking or unlocking one end of the ignition key by locking or unlocking the ignition key. A second engaging member to which the other end of the connecting member is connected, Locking device of the lever.