JP2005178702A - Key interlock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a key interlock device capable of performing certain key interlock motion using a small and light solenoid. <P>SOLUTION: The key interlock device is structured so that the solenoid 4 to be energized when a shift lever is in a position other than the P-position and a slider 5 slidable toward outside a key cylinder 1 are installed in a case 2 formed beside the key cylinder 1. A yoke 6 of this slider 5 is put in tight contact with the solenoid 4 at all times, and a lock link 8 is pivoted on the slider 5. In this device, the slider 5 is attracted by the solenoid 4 when the shift lever is in position other than the P-position, and the engaging part 10 of the lock link 8 abuts to a pawl-shaped projection 3 on a rotor to hinder the key from turning from the ACC position to the lock position; but in the non-attracted condition, the lock link 8 slides together with the slider 5 to admit rotation of the key from the ACC position to the lock position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a key interlock device incorporated in a key cylinder portion of an automobile.

  The AT car incorporates a key interlock device that prevents the key from being removed from the key cylinder unless the shift lever is in the P position. As a result, the shift lever is always in the P position during parking, and even if the parking brake rocks, the mechanical lock mechanism of the transmission works to prevent the car from starting to move.

  In this key interlock device, it is necessary to interlock the shift lever device and the key cylinder. As shown in FIG. 1 of Patent Document 1, the key interlock device is connected with a cable, and the key cylinder is attached with a solenoid from the shift lever device. There are two types, one that is linked with the other electrical signal.

Of these, the type that is connected by a cable requires a labor for wiring and requires adjustment of the position of the cable. Therefore, a type using a solenoid is generally used recently. However, conventional solenoid-type key interlock devices release the key lock by turning on the solenoid when the shift lever is in the P position and attracting the yoke that is normally separated to the solenoid side. Therefore, in order to obtain a predetermined attracting force, a large solenoid is required, and there is a drawback in that the weight and cost are increased.
Japanese Patent Laid-Open No. 2-70530

  The present invention has been made in order to solve the above-described conventional problems and to provide a key interlock device capable of performing a reliable key interlock operation with a small and lightweight solenoid.

  The present invention has been made to solve the above-mentioned problems. A solenoid that is turned on when the shift lever is in a position other than the P position and a slidable outward of the key cylinder are provided in a case provided on the side of the key cylinder. A slider is provided to keep the yoke of the slider in close contact with the solenoid by a spring force. When the slider is attracted to the solenoid, the key is prevented from rotating from the ACC position to the lock position. However, in the non-adsorption state, a lock link that slides with the slider and allows the key to rotate from the ACC position to the lock position is provided.

  In addition, it is preferable that the lock link is slidably supported in the long groove of the case at an intermediate position, and is pivotally attached to the slider at the end on the slider side. Further, it is preferable that the end portion on the slider side of the lock link is bent toward the key cylinder side, and the tip thereof is an engaging portion with a claw-like protrusion of the rotor rotated by the key inside the key cylinder.

  In the key interlock device of the present invention, the slider yoke is kept in close contact with the solenoid at all times by the spring force, and when the shift lever is in a position other than the P position, the solenoid is turned on to attract the slider and locked from the ACC position by the lock link. Prevents key rotation to position. When the shift lever is in the P position, the solenoid is turned off to make it non-adsorbed, and the key rotation from the ACC position to the lock position is allowed.

  Thus, in the present invention, the slider yoke is always in close contact with the solenoid by the spring force, and in that state, the solenoid is simply turned on and off to change the attracting force. There is no need to adsorb. For this reason, a reliable key interlock operation can be performed by a small and light solenoid.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall view of a key interlock device according to the present invention, wherein 1 is a key cylinder and 2 is a case provided on the side thereof. Although the key cylinder 1 is conceptually illustrated, a rotor, a tumbler, and the like that are rotated by a key are provided therein as in the conventional case. In explaining the present invention, only the claw-like projections 3 formed integrally with the rotor are important. Therefore, only the claw-like projections 3 are shown in FIG. It goes without saying that the rotor and the claw-shaped protrusion 3 are rotated inside the key cylinder 1 at the same time as the key is rotated to the lock position, the ACC position, the ON position, the start position, and the like.

  FIG. 2 is a perspective view of the inside of the case 2 as seen from the key cylinder 1 side, and FIG. 3 is a perspective view of components housed in the case 2. 4 is a solenoid fixed inside the case 2, and 5 is a slider provided inside the case 2. The slider 5 is supported along a long groove formed on the inner surface of the case 2 so that it can slide a small distance in the outer direction of the key cylinder 1 as shown in FIG. A yoke 6 made of iron plate is fixed to the surface of the slider 5 on the side of the solenoid 4 and is attracted to the solenoid 4. As will be described later, in the present invention, the yoke 6 of the slider 5 is always in close contact with the solenoid 4.

  As shown in FIG. 3, a bifurcated arm 7 projects from the end of the slider 5, and an L-shaped lock link 8 swings at the tip of the arm 7 by a pin 9 (shown in FIG. 4). It is pivotally possible. The end of the lock link 8 on the side close to the slider 5 is bent toward the key cylinder 1 side, and the tip thereof is an engaging portion 10 with the claw-like protrusion 3 of the rotor rotated by the key. A compression spring 11 is provided at the opposite end, and the end of the compression spring 11 is in contact with the spring receiver 12 of the key cylinder 1. Further, a pin 13 is provided at an intermediate position of the lock link 8 and is slidably supported in the long groove 14 of the case 2.

  FIG. 4 shows a state where the shift lever is in a position other than the P position. In this state, the solenoid 4 is turned on by an electric signal from the shift lever device, and the yoke 6 of the slider 5 is in close contact with the solenoid 4 and strongly adsorbed. Therefore, the slider 5 is fixed on the key cylinder 1 side. The upper end of the lock link 8 pivotally attached to the slider 5 by the pin 9 is pushed outward by the compression spring 11 and the pin 13 is in contact with the end of the long groove 14 of the case 2.

  In the state of FIG. 4, the engaging portion 10 bent toward the key cylinder 1 side of the lock link 8 protrudes into the key cylinder 1. When the shift lever is in a position other than the P position, the key is always in the ACC position or the on position, so that the claw-shaped protrusion 3 is in the upper position in the drawing than the engaging portion 10 of the lock link 8.

  In this state of FIG. 4, when the key is returned to the ACC position to stop the engine and the key is returned to the lock position without the shift lever being in the P position, the key rotates together with the key as shown in FIG. The engaging portion 10 of the lock link 8 is pushed by the claw-like projection 3. At this time, since the slider 5 is attracted to the solenoid 4 and the position of the pin 9 does not move, the lock link 8 rotates slightly in the clockwise direction on the drawing against the compression spring 11, and the lower surface of the engaging portion 10 is When it hits the end face 15 of the key cylinder 1, it cannot move any further. Accordingly, the rotation of the claw-like projection 3 is prevented, and a key interlock function is activated in which the key cannot be returned to the lock position without the shift lever being put in the P position.

  However, when the shift lever is put into the P position and the key is returned to the locked position from the state shown in FIG. 4, the solenoid 4 is turned off and the force for attracting the slider 5 is released. As a result, the lock link 8 and the slider 5 move to the outside, and the state shown in FIG. 6 is obtained. Thus, when the lock link 8 and the slider 5 are moved outward, the claw-like protrusion 3 is disengaged from the engaging portion 10 of the lock link 8, and the key can be returned to the lock position. For this reason, if the shift lever is put in the P position, the key can be returned to the lock position and removed from the key cylinder 1.

  After the key is removed, the state shown in FIG. 6 is maintained. However, when the key is inserted and rotated to the ACC position, the engagement between the claw-like projection 3 and the engagement portion 10 of the lock link 8 is lost, and the lock link 8 is at its upper end. Is pushed outward by the compression spring 11 and rotated around the pin 13 to return to the state of FIG.

  As described above, the key interlock device of the present invention uses the solenoid 4 to generate the key interlock function, but unlike the prior art, the yoke 6 of the slider 5 is always connected to the solenoid 4 by the force of the compression spring 11. In this state, the solenoid 4 is simply turned on and off to change the attractive force. Therefore, the solenoid 4 does not need to attract the yoke at a distant position as in the conventional case, and therefore there is an advantage that a small and lightweight solenoid can be used.

1 is an overall view of a key interlock device of the present invention. It is the perspective view which looked at the inside of a case from the key cylinder side. It is a perspective view of the components accommodated in the inside of a case. It is sectional drawing of the principal part in the state which has a shift lever other than P position. It is sectional drawing of the principal part which shows the state which cannot return a key to a locked position. It is sectional drawing of the principal part which shows the state which returned the key to the lock position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Key cylinder 2 Case 3 Claw-shaped protrusion of a rotor 4 Solenoid 5 Slider 6 Yoke 7 Arm 8 Lock link 9 Pin 10 Engagement part 11 Compression spring 12 Spring support 13 Pin 14 Long groove 15 End surface

Claims (3)

  Inside the case provided on the side of the key cylinder, there is a solenoid that turns on when the shift lever is not in the P position and a slider that can slide to the outside of the key cylinder. When the slider is attracted to the solenoid, the key is prevented from rotating from the ACC position to the lock position on the slider, but in the non-adsorbed state, the key slides with the slider from the ACC position. A key interlock device comprising a lock link that allows rotation of a key to a lock position.   2. A key interlock device according to claim 1, wherein the lock link is slidably supported in the long groove of the case at an intermediate position thereof, and is pivotally attached to the slider at the end on the slider side. .   2. The key interlock device according to claim 1, wherein an end of the lock link on the slider side is bent toward the key cylinder, and a tip thereof is used as an engaging portion with a claw-like protrusion of a rotor rotated by a key inside the key cylinder. .

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