JP4435347B2 - Shift lever lock cam structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure of a lock cam for a shift lever.
[0002]
[Prior art]
Conventionally, for example, as shown in FIG. 4, a shift lever for an automobile is operated by operating the shift lever 1 in the front-rear direction, so that a parking range P, a reverse range R, a neutral range N, a drive range D, a second range S, and a low range L To shift to.
[0003]
When the shift lever 1 is shifted to the parking range P while pushing the knob button 2 of the shift lever 1 with a finger and the finger is released from the knob button 2, as shown in FIG. As the pin 3 moves upward (see arrow a), the lock cam 5 rotates forward (see arrow b) against the biasing force of the return spring 4 to push the cable 6 (see arrow c). ) Since the key lock mechanism of the key cylinder is unlocked and the cable 6 is locked at the pressed position, the lock cam 5 is held in the forward rotation and the knob button 2 is pushed with a finger. Also, the lock cam 5 cannot be rotated backward by the guide pin 3 (shift lock).
[0004]
Also, the cable 6 is unlocked by inserting the ignition key into the key cylinder, turning it to the ignition position, and depressing the brake pedal, so that the knob button 2 is pushed with a finger and the guide pin 3 is moved downward. The lock cam 5 is rotated backward by the urging force of the return spring 4 so that the shift lock is released so that the shift lever 1 can be shifted to another range together with the guide pin 3, and the cable 6 is pulled. The ignition key is locked by the key lock mechanism of the key cylinder, and the ignition key cannot be removed from the key cylinder (key interlock).
[0005]
In the lock cam structure (first prior art) that serves both as a shift lock and a key interlock as described above, the lock cam 5 can be rotated backward by the guide pin 3 even if the knob button 2 is pushed with a finger in the shift lock state. However, a large load C in the backward rotation direction (pulling direction) of the lock cam 5 acts on the cable 6 that is locked at the pressed position.
[0006]
For this reason, as shown in FIG. 5B, a lock cam structure (second prior art) divided into a shift lock cam 5A and a key interlock cam 5B has been proposed. With this structure, even if the knob button 2 is pushed with a finger in the shift locked state, the lock cam 5A cannot be rotated backward by the guide pin 3, and the key interlock cam is connected to the cable 6 locked in the pressed position. There is an advantage that the large load C in the rearward rotation direction of 5B does not act.
[0007]
[Problems to be solved by the invention]
However, since the second prior art requires two lock cams 5A and 5B, there is a problem in that the number of parts increases in connection with this, and the variation in operation increases due to the tolerance of each part.
[0008]
The present invention has been made to solve the above-described conventional problems, and provides a structure of a lock cam for a shift lever in which a heavy load is not applied to a cable, and the number of parts can be reduced to reduce variation in operation. It is intended.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is such that, in the parking range, the guide pin of the shift lever is rotated to the shift lock position against the urging force of the return spring, and the return spring is used in a range other than the parking range. A lock cam that serves both as a shift lock and a key interlock that is turned to the key interlock position by the biasing force of the shift lever, and the guide pin of the shift lever that has moved to the parking range is seen from the side of the lock cam. A hollow portion is formed to be loosely fitted, and an inclined portion is formed on the upper inner surface of the hollow portion to push the lock cam to the shift lock position against the biasing force of the return spring with a guide pin that moves upward. under the inner surface of the recess, with the locking cam is pushed around the shift lock position, the lock cam Located substantially on the vertical line of the rotation center, in which to provide a structure of a lock cam shift lever, characterized in that the planar portion capable stop against the downward movement of the guide pin is formed.
[0010]
According to the present invention, when the shift lever is shifted to the parking range, the guide pin of the shift lever is loosely fitted in the recess of the lock cam, and when the finger is released from the knob button in this state, the guide pin of the shift lever is moved upward. As a result, the lock cam is pushed to the shift lock position against the urging force of the return spring as the guide pin moves upward.
[0011]
As a result, the cable is pushed, the key lock mechanism of the key cylinder is unlocked, and the cable is locked at the pushed position, so that the lock cam is held while being pushed to the shift lock position. .
[0012]
In this state, even if the knob button is pushed with a finger, the guide pin that moves downward is merely abutted against the flat surface of the lower inner surface of the recess located on the vertical line of the rotation center of the lock cam. Therefore (shift lock), the lock cam is not rotated by the guide pin.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same number is attached | subjected to the location of the same structure and effect | action as a prior art, and detailed description is abbreviate | omitted.
[0014]
As shown in FIGS. 1 and 2, the shift lever 1 is supported by a base plate 8 so that the lower end of the shift lever 1 can be rotated back and forth. The shift lever 1 has a spring force when the knob button 2 is pushed with a finger. Guide pins 3 are provided on both sides so as to project against both sides and move upward by spring force when the knob button 2 is released.
[0015]
An upper portion of the base plate 8 is provided with a detent plate portion 9 that is located on one side of the shift lever 1 and in which position restricting grooves 9a corresponding to the ranges P, R, N,. When the guide pin 3 of the shift lever 1 is positioned in any one of the position restricting grooves 9a, the range P, R, N,.
[0016]
A rectangular parallelepiped lock cam made of a synthetic resin serving both as a shift lock and a key interlock is located above the base plate 8 on the other side of the shift lever 1 and corresponding to the position restricting groove 9a of the parking range P. 10 is arranged.
[0017]
As shown in detail in FIG. 3, the lock cam 10 is supported by a bracket portion 8 a of the base plate 8 so that a center hole 10 a is pivotally supported by a support shaft 11. A connecting shaft portion 10b that connects the other end portion 6a of the cable 6 having one end portion connected to a key lock mechanism (not shown) of the key cylinder is formed.
[0018]
The lock cam 10 is provided with a return spring 13 that is biased in the forward rotation direction F. The lock cam 10 that is biased in the forward rotation direction F corresponds to the position restriction groove 9a of the parking range P. It comes to be stopped by the stopper pin 13a at the part to be done. Note that the return spring 13 may be a wire spring wound around the support shaft 11.
[0019]
In the upper part on the inner surface side of the lock cam 10, a recess 10 c is formed in which the guide pin 3 of the shift lever 1 moved to the parking range P is loosely fitted from the side.
[0020]
As shown in FIG. 1A, the lock cam 10 is rotated backwardly against the urging force of the return spring 13 by the guide pin 3 that moves upward in the parking range P, as shown in FIG. An inclined portion 10d that is pushed to the B shift lock position (see FIG. 1B) is formed, and a lock cam is formed on the lower inner surface of the recess portion 10c with the shift lever 1 pushed to the shift lock position. A flat portion 10e is formed that is positioned substantially on the vertical line L of the center hole (rotation center) 10a of the ten and can stop the guide pin 3 from moving downward.
[0021]
In the above configuration, when the shift lever 1 is shifted to the parking range P while pushing the knob button 2 with a finger, the guide pin 3 is loosely fitted into the recess 10c of the lock cam 10 from the side.
[0022]
Then, when the finger is released from the knob button 2, the guide pin 3 is moved upward to come into contact with the inclined portion 10d on the upper inner surface of the lock cam 10 (state shown in FIG. 1A), and the contacted guide pin 3 is inclined. By pushing the portion 10d, the lock cam 10 is pushed to the shift lock position in the backward rotation direction B against the urging force of the return spring 13 (state shown in FIG. 1B).
[0023]
As a result, the cable 6 is pushed and the key lock mechanism of the key cylinder is unlocked, so that the key interlock of the ignition key is released and the ignition key can be removed from the key cylinder.
[0024]
At this time, since the cable 6 is locked at the pressed position, the lock cam 10 is held in the shift lock position, and even if the knob button 2 is pushed with a finger, the downward movement of the guide pin 3 rotates the lock cam 10. The locking cam 10 does not rotate forward (shift lock) because it is stopped by the flat surface portion 10e located on the substantially vertical line at the center.
[0025]
Therefore, a large load accompanying the rotation of the lock cam 10 does not act on the cable 6 locked at the position pressed by the lock cam 10. Further, since only one lock cam 10 is required, the number of parts can be reduced and the variation in operation is reduced.
[0026]
On the other hand, the cable 6 is unlocked by inserting the ignition key into the key cylinder, turning it to the ignition position, and depressing the brake pedal, so that the knob button 2 is pushed with a finger and the guide pin 3 is moved downward. The lock cam 10 is rotated forward by the urging force of the return spring 13, the shift lock is released, and the shift lever 1 can be shifted to another range together with the guide pin 3.
[0027]
At this time, since the cable 6 is pulled, the ignition key is locked by the key lock mechanism of the key cylinder, so that the ignition key cannot be removed from the key cylinder (key interlock).
[0028]
【The invention's effect】
As is clear from the above description, in the present invention, when the shift lever is shifted to the parking range and the finger is released from the knob button, the guide pin of the shift lever moves upward and comes into contact with the inclined portion of the recess. As a result, the lock cam is pushed to the shift lock position against the urging force of the return spring. In this state, even if the knob button is pushed with a finger, the guide pin that moves downward is the center of rotation of the lock cam. Therefore, the lock cam is not rotated by the guide pin because it is merely brought into contact with the flat portion of the recess located on the vertical line (shift lock).
[0029]
Therefore, a large load due to the rotation of the lock cam does not act on the cable locked at the position pressed by the lock cam, and only one lock cam is required, so that the number of parts can be reduced and the operation variation is reduced.
[0030]
In addition, after the cable lock is released by depressing the brake pedal, the lock cam is rotated by the return spring biasing force to push the knob button with your finger to move the guide pin downward, and the shift lock Is released, and the shift lever can be shifted to another range together with the guide pin.
[Brief description of the drawings]
1A and 1B show a pivoting state of a lock cam according to the present invention, in which FIG. 1A is a side view in a key interlock state, and FIG. 1B is a side view in a shift lock state;
FIG. 2 is a front view showing a relationship between a detent plate portion and a lock cam with respect to a shift lever.
FIG. 3 is a perspective view of the inner surface side of the lock cam.
FIG. 4 is a perspective view of a shift lever.
5A and 5B are a conventional lock cam in a shift lock state, in which FIG. 5A is a side view of the first prior art, and FIG. 5B is a side view of the second prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shift lever 2 Knob button 3 Guide pin 6 Cable 10 Lock cam 10a Center hole 10c Indentation part 10d Inclination part 10e Plane part 13 Return spring L Vertical line P Parking range

Claims (1)

In the parking range, the shift lever guide pin is rotated to the shift lock position against the biasing force of the return spring, and in the range other than the parking range, it is rotated to the key interlock position by the biasing force of the return spring. A lock cam that doubles as a shift lock and a key interlock.
The lock cam is formed with a recess in which the guide pin of the shift lever moved to the parking range is loosely fitted from the side. The lock cam is attached to the upper inner surface of the recess with a return spring. An inclined portion that is pushed against the force to the shift lock position is formed, and on the lower inner surface of the recess, the lock cam is pushed to the shift lock position and is substantially on the vertical line of the rotation center of the lock cam. A structure of a lock cam for a shift lever, characterized in that a flat portion is formed which can be positioned at a position where the downward movement of the guide pin of the shift lever can be stopped.

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