JPH084380A - Key device - Google Patents

Abstract

PURPOSE:To prevent the movement of a lever even when a key plate of a different kind is inserted, to disenable easy lock release and to obviate breaking even to the insertion of the key plate of the different kind by simple constitution. CONSTITUTION:An intermediate rotor 5 rotatably holding a rotor 1 is mounted into a rotor case 13 while the rotor 1 and a cam rotor 11 are connected by a cam tumbler 17, and the intermediate rotor 5 is rotated together with the rotor 1 when a key plate of a different kind is inserted. An arm 22 stores the cam tumbler 17 into the rotor 1 through a cam slider 18 by mounting the external cylinder surface of the intermediate rotor 5 of a ball 23 engaged with a recessed groove 7, thus releasing the connection of the rotor 1 and the cam rotor 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a key device provided in an automobile door, and more particularly, to a key plate insertion hole of a rotor provided in a rotor case and a tumbler in a tumbler groove of the rotor. When the tumbler is inserted into the key plate insertion hole, the tumbler is aligned, the engagement with the locking groove formed in the inner wall surface of the rotor case is released, and the rotor can rotate.

[0002]

2. Description of the Related Art Next, a conventional example will be described with reference to the drawings.
11 is a sectional view of the key device disclosed in Japanese Utility Model Publication No. 61-197157, FIG. 12 is a sectional view taken along the line AA in FIG. 11, and FIG.
FIG. 12 is a diagram for explaining the operation in FIG. 11.

In the figure, a key rotor 100 is rotatably supported by a first rotor case 101. In addition, the first rotor case 101 is the second rotor case 1
It is rotatably supported by 02.

The key rotor 100 is provided with a tumbler groove 103 in the radial direction, and the tumbler groove 103 is provided with a tumbler 104 biased in a direction projecting from the key rotor 100 by a spring (not shown).

Further, a convex portion 105 is formed on the front end face of the first rotor case 101, and the convex portion 105 is formed on the second rotor case.
A concave portion 106 with which the convex portion 105 is engaged is formed. Further, a small diameter portion 107 is formed in the rear portion of the key rotor 100, and a hole 109 provided at the base end portion of the lever 108 is inserted into the small diameter portion 107.

As shown in FIG. 12, the hole 109 of the lever 108 is formed with an engaging portion 111 with which a projection 110 formed on the small diameter portion 107 of the key rotor 100 is engaged. Further, the lever 108 is the small diameter portion 107 of the key rotor 100.
The E-ring 112 locked to the E-ring 112 and the disc spring 113 whose one end is engaged with the E-ring 112 are used for the key rotor 10
It is pushing 0. Reference numeral 114 is a link for transmitting one end of the lever 108 to the rotation end and the other end of the lever 108 to a lock device (not shown) for transmitting the rotational force of the lever 108 to the lock device.

Next, the operation of the above configuration will be described. Figure 11
When the regular key plate is inserted and rotated in the state shown in (1), the tumbler 104 is aligned in the key rotor 100, and only the key rotor 100 rotates. When the key rotor 100 rotates, the protrusion 110 of the small diameter portion 107 of the key rotor 100 pushes the side end surface of the engaging portion 111 of the lever 108, and the lever 10
8 rotates to lock / unlock a lock device (not shown) via the link 114.

When a different type key plate (a key plate in which a regular end face is not formed on the narrow surface) is inserted and rotated, the key rotor 100 rotates with the tumbler 104 protruding from the key rotor 100. The rotor case 101 also rotates. First rotor case 101
When is rotated, the convex portion 105 separates from the concave portion 106, the first rotor case 101 retracts in the axial direction, and the lever 10
8 is pressed against the biasing force of the disc spring 113, and the key rotor 1
The engagement between the projection 110 of 00 and the hole 109 of the lever 108 is released, and the lever 108 does not rotate, so that the locking / unlocking of the locking device is not performed.

[0009]

However, in the case of the key device having the above-described structure, when a different key plate is inserted into the key rotor 100 and rotated, the lever 108 retracts. For this reason, the link 114 that connects the rotating end of the lever 108 and the lock device also moves, so that there is a problem in that nothing can be placed within the moving range of the link 114.

The present invention has been made in view of the above problems, and an object thereof is a simple structure, the lever does not move even when a different type key plate is inserted, and the lock cannot be easily released.
Another object of the present invention is to provide a key device that does not break even when a different key plate is inserted.

[0011]

Means for Solving the Problems A first method for solving the above problems is described below.
In the invention, a tumbler groove and a cam tumbler groove that penetrate in the diameter direction are bored, and a rotor in which a key plate insertion hole that penetrates in the axial direction is formed on one end surface, and a portion of the rotor where the tumbler groove is formed. Is rotatably held, a long groove is engraved in the axial direction of the inner cylindrical surface, a concave groove is formed on the outer cylindrical surface, and a key plate insertion hole is formed in the central portion.
A tumbler slidably engaged with the tumbler groove, and a first spring provided in the tumbler groove for urging the tumbler in a direction to engage with the long groove of the intermediate rotor,
A portion of the rotor in which the cam tumbler groove is formed is rotatably supported, and a cam rotor in which a first hole is formed in a cylindrical surface, the intermediate rotor and the cam rotor are rotatably supported, and a second portion is formed in the cylindrical surface. A rotor case having a hole and a third hole formed therein; a cam tumbler slidably engaged with the cam tumbler groove and engageable with the first hole of the cam rotor;
A cam slider that slidably engages with a second hole of the rotor case, one end of which can abut the cam tumbler, and a hole is formed in the side surface of the other end, and the cam tumbler groove. A second spring which is provided and biases the cam tumbler in a direction to engage the first hole of the cam rotor; and an intermediate portion rotatably attached to the rotor case, one end of which is a hole of the cam slider. An arm that is loosely fitted to the rotor case, a ball that is provided in the third hole of the rotor case, is engageable with the concave groove of the intermediate rotor, and the other end of the arm can contact, and the cam slider, It comprises a third spring which urges the cam tumbler away from the cam tumbler to press the other end of the arm against the ball, and a lever which engages with the cam rotor.

According to a second aspect of the present invention, a tumbler groove and a cam tumbler groove that penetrate in the diameter direction are bored, and a key plate insertion hole that penetrates in the axial direction is opened in one end face, and a tumbler groove of the rotor. An rotatably held portion in which a long groove is formed in the axial direction of the inner cylindrical surface of the intermediate rotor, and a key plate insertion hole in the center portion is formed so that it can slide in the tumbler groove. A combined tumbler, a first spring provided in the tumbler groove for urging the tumbler in a direction to engage with the long groove of the intermediate rotor, and a portion of the rotor in which the cam tumbler groove is formed rotatably supported. And rotatably supporting the cam rotor having the first hole formed on the cylindrical surface, the intermediate rotor and the cam rotor,
A rotor case having a second hole formed in a cylindrical surface, a cam tumbler slidably engaged with the cam tumbler groove and engageable with the first hole of the cam rotor, and a second hole of the rotor case. A cam slider slidably engaged with the cam tumbler at one end thereof and provided in the cam tumbler groove so that the cam tumbler engages with the first hole of the cam rotor. A second spring that urges the spring, a third spring that urges the cam slider in a direction away from the cam tumbler, and a lever that engages with the cam rotor are provided on the end surface of the intermediate rotor facing the lever. The two facing surfaces in the radial direction are provided with a notch groove that is an inclined surface in a direction in which the two surfaces are closer to each other toward the outer cylindrical surface, and the notch groove is provided in the lower portion of the cam slider. It is provided with a projection abutting the.

[0013]

In the key device of the first invention, when the regular key plate is inserted into the key plate insertion hole, the tumblers are aligned in the rotor. Therefore, when the key plate is rotated, only the rotor is rotated. When the rotor rotates, the cam tumbler pushes the wall surface of the first hole of the cam rotor, and the cam rotor also rotates. When the cam rotor rotates, the lever also rotates.

On the other hand, when the dissimilar key plate is inserted into the key plate insertion hole, the tumbler is not aligned in the rotor but engages with the long groove of the intermediate rotor. Therefore, when the key plate is rotated, the intermediate rotor also rotates with the rotor. When the intermediate rotor rotates, the engagement between the ball and the concave groove of the intermediate rotor is released, and the ball rides on the outer cylindrical surface of the intermediate rotor,
Push the other end of the arm. Therefore, the arm rotates,
Move the cam slider inside the rotor case. When the cam slider moves inside the rotor case, the cam tumbler moves against the biasing force of the second spring, and the engagement between the cam tumbler and the first hole of the cam rotor is released. Therefore, the lever does not rotate even if the key plate is rotated.

In the key device of the second invention, when the regular key plate is inserted into the key plate insertion hole, the tumblers are aligned in the rotor. Therefore, when the key plate is rotated, only the rotor is rotated. When the rotor rotates, the cam tumbler pushes the wall surface of the first hole of the cam rotor, and the cam rotor also rotates. By rotating the cam rotor,
The lever also rotates.

On the other hand, when the dissimilar key plate is inserted into the key plate insertion hole, the tumbler is not aligned in the rotor but engages with the long groove of the intermediate rotor. Therefore, when the key plate is rotated, the intermediate rotor also rotates with the rotor. When the intermediate rotor rotates, the cam slider moves in the cam tumbler direction, the cam tumbler moves against the biasing force of the second spring, and the engagement between the cam tumbler and the first hole of the cam rotor is released. Therefore, the lever does not rotate even if the key plate is rotated.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the drawings. 1 is an exploded perspective view of a first embodiment of the present invention, FIG. 2 is a sectional view when a regular key plate is inserted in the key device shown in FIG. 1, FIG. 3 is a BB sectional view in FIG.
2 is a cross-sectional view of CC in FIG. 2, FIG. 5 is a cross-sectional view of a key device shown in FIG.
6 is a sectional view taken along line DD in FIG.

First, the configuration of the key device of this embodiment will be described with reference to FIGS. A rotor 1 having a key plate insertion hole 2 formed on one end surface is provided with four tumbler grooves 3 and one cam tumbler groove 4 which are diametrically penetrated from one end side.

The portion of the rotor 1 in which the tumbler groove 3 is formed is rotatably held by the intermediate rotor 5. On the inner cylindrical surface of the intermediate rotor 4, two long grooves 6 are provided along the axial direction.
The grooves are formed at a pitch of 180 °, and the concave grooves 7 are formed on the outer cylindrical surface.

A tumbler 9 having a key plate insertion hole 8 formed in the center thereof is slidably engaged with each tumbler groove 3 of the rotor 1. Each tumbler 9 is urged by a first spring 10 provided in each tumbler groove 3 in a direction to engage with the tumbler locking groove of the long groove 6 of the intermediate rotor 5.

A first hole 12 is formed in the cylindrical surface of a cam rotor 11 that rotatably supports the portion of the rotor 1 in which the cam tumbler groove 4 is formed. The rotor 1 and the cam rotor 11 are rotatably supported by the rotor case 13. A second hole 14 and a third hole 15 are formed on the cylindrical surface of the rotor case 13.

The cam tumbler groove 4 of the rotor 1 has a key plate insertion hole 16 formed in the center thereof.
7 is slidably engaged. At one end of the cam tumbler 17, an engaging portion 17 that is set to a width w narrower than the width W of the first hole 12 of the cam rotor 11 and engages with the first hole 12
a and a width wider than the width W of the first hole 12 of the cam rotor 11
A non-engaging portion 17b formed in W'is formed.

A cam slider 18 is slidably engaged with the second hole 14 of the rotor case 13. One end of the cam slider 18 can come into contact with the cam tumbler 17, and a hole 19 is formed in the side surface on the other end side.

The cam tumbler 17 is engaged with the engaging portion 17a by the second spring 20 provided in the cam tumbler groove 4.
Is urged in a direction to engage with the first hole 12 of the cam rotor 11.

The middle portion is on the outer cylindrical surface of the rotor case 13,
Is formed so as to surround the second hole 14 and the third hole 15,
An arm 22 rotatably attached using a pin 21 in a housing portion 13a that serves as a guide for the cam slider 18.
One of the ends is loosely fitted in the hole 19 of the cam slider 18.

A ball (steel ball) 23 that engages with the concave groove 7 of the intermediate rotor 5 is provided in the third hole 15 of the rotor case. Further, a protrusion 24 capable of contacting the ball 23 is formed at the other end of the arm 22.

The cam slider 18 is biased by the third spring 25 in the direction away from the cam tumbler 17. On the other hand, since one end of the arm 22 is loosely inserted in the hole 19 of the cam slider 18, the cam slider 18 can be moved until the hole 19 contacts the arm 22. Further, at this time, the third spring 2
The protrusion 24 of the arm 22 moves the ball 23
Is pressed.

A shaft portion 28 extending along the rotation axis is formed on the other end surface of the rotor 1, and a rotation base end portion of a lever 27 is rotatably attached to the shaft portion 28 so that the shaft portion 28 can be rotated. E-ring 3 that engages with groove 28a of 28
0 means that it will not come off. An arcuate groove 26 centered on the center of rotation is formed at the base of the rotation of the lever 27. On the other hand, the cam rotor 11 is formed with an arcuate projection 11a that engages with the arcuate groove 26 of the lever 27, and the cam rotor 11 and the lever 27 rotate integrally. The other end of the link, one end of which is connected to a lock device (not shown), is connected to the rotating end of the lever 27.

The intermediate portion 31 is the shaft portion 28 of the rotor 1.
The cam rotor 11 at both ends
The return spring contacts the inner wall surface of the rotor case 13 through the notch hole 11b and positions the cam rotor 11.

Reference numeral 35 is a regular key plate inserted through the key plate insertion hole 2, and 36 is a cover for covering the front end face of the rotor case. Next, the operation of the above configuration will be described separately for the case of using a regular key plate and the case of using a different type key plate.

(1) When a regular key plate is used (reference drawings FIGS. 1 to 4) When the regular key plate 35 is inserted into the key plate insertion hole 2 of the rotor 1, the tumblers 9 are aligned in the rotor 1.
(Figs. 2 and 4). When the key plate 35 is rotated in this state, only the rotor 1 rotates. At this time, cam tumbler 1
7 is engaged by the urging force of the third spring 25.
7a is engaged with the first hole 12 of the cam rotor 11.
(Figs. 2 and 3). Therefore, when the rotor 1 rotates, the cam tumbler 17 pushes the wall surface of the first hole 12 of the cam rotor 11, and the cam rotor 11 also rotates together with the rotor 1. When the cam rotor 11 rotates, the wall surface of the cutout hole 11a pushes the end portion of the return spring 31 to reduce the diameter of the return spring 31, and the lever 27 that rotates integrally with the cam rotor 11 rotates, which is not shown. The locking device is driven and locking / unlocking is performed. When the lock / unlock of the lock device is completed and the force for operating the key plate 35 is released, the cam rotor 11, the rotor 1 and the lever 27 connected to the cam rotor 11, and the lever 27 are driven by the urging force of the return spring 31 having a reduced diameter. Returns to its original position.

(2) When different key plates are used (reference drawings FIGS. 1, 4 and 5) When the different key plates are inserted into the key plate insertion holes 2 of the rotor 1, the tumbler 9 is not aligned in the rotor. , Engages with the long groove 6 of the intermediate rotor 5 (Fig. 5).

Therefore, when the different key plates are rotated,
The intermediate rotor 5 also rotates with the rotor 1. Intermediate rotor 5
When is rotated, the ball 23 rides on the outer cylindrical surface of the intermediate rotor 5 from the concave groove 7 of the intermediate rotor 5 and pushes the other end of the arm 22 upward. Therefore, the arm 22 rotates, one end of the arm 22 pushes down the cam slider 18 into the rotor case 13, and the lower end of the cam slider 18 engages with the first hole 12 of the cam rotor 11. When the cam slider 18 is pushed down, the cam tumbler 17 moves against the urging force of the second spring 20, and the engagement portion 17a of the cam tumbler 17 and the first hole 12 of the cam rotor 11 are disengaged. (FIGS. 5 and 6).

Therefore, even if the key plate 35 is rotated, the cam rotor 11 does not rotate, the lever connected to the cam rotor 11 also does not rotate, and the lock device is not driven.
According to the above configuration, the lever does not move in the axial direction even when a key plate of a different type is inserted, and the lock cannot be easily released with a simple configuration.

Even if a different type key plate is inserted and rotated, the intermediate rotor 5 rotates together with the rotor 1, so that the key device is not destroyed. Next, a second embodiment of the present invention will be described with reference to FIGS. 7 is an exploded perspective view of the second embodiment of the present invention, FIG. 8 is a view taken in the direction of arrow E in FIG. 7, and FIG. 9 is a sectional view of the key device shown in FIG. 7 when a regular key plate is inserted. FIG. 10 is a sectional view of the key device shown in FIG. 7 when a different type key plate is inserted. In this embodiment, the same parts as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In these figures, the parts different from the first embodiment are the rotor case 63, the intermediate rotor 55 and the cam slider 68. The rotor housing 6 formed on the outer cylindrical surface of the rotor case 63 so as to surround the second hole 14.
A cam slider 68, which can come into contact with the cam tumbler 17, is provided in 3a so as to be slidable in the radial direction.

On the other hand, on the end surface of the intermediate rotor 55 facing the lever 27 side, a notch groove 69 is formed, which is a slope in which two radially facing surfaces approach each other toward the outer cylindrical surface. .

Further, a projection 70 is provided on the lower portion of the cam slider 68 so as to come into contact with the slope of the cutout groove 69 of the intermediate rotor 55. Next, the operation of the above configuration will be described separately for the case of using a regular key plate and the case of using a different type key plate.

(1) Using a Regular Key Plate (Reference Drawing 9) When the regular key plate 35 is inserted into the key plate insertion hole 2 of the rotor 1, the tumblers 9 are aligned in the rotor 1. When the key plate 35 is rotated in this state, only the rotor 1 rotates. At this time, the engagement portion 17 a of the cam tumbler 17 is engaged with the first hole 12 of the cam rotor 11 by the urging force of the third spring 25. Therefore, when the rotor 1 rotates, the cam tumbler 17 will move to the cam rotor 1
The wall surface of the first hole 12 of No. 1 is pressed, and the cam rotor 11 also rotates together with the rotor 1. The lever 2 that rotates together with the cam rotor 11 when the cam rotor 11 rotates
7 also rotates and the lock device (not shown) is driven to lock
/ Unlocked. Then, when the locking / unlocking of the locking device is completed and the force for operating the key plate 35 is released, the cam rotor 11, the rotor 1 connected to the cam rotor 11, and the lever 27 are returned to their original positions by the urging force of the return spring 31. Return to.

(2) When using a dissimilar key plate (Refer to FIG. 10) When the dissimilar key plate is inserted into the key plate insertion hole 2 of the rotor 1, the tumbler 9 is not aligned in the rotor, and the long groove of the intermediate rotor 55 is not aligned. Engage 6

Therefore, when the different key plates are rotated,
The intermediate rotor 55 also rotates with the rotor 1. When the intermediate rotor 55 rotates, the projection 70 of the cam slider 68 moves toward the cam tumbler 17 due to the slope of the notch groove 69, the cam tumbler 17 moves against the biasing force of the second spring 20, and the cam tumbler 17 engages. The engagement between the mating portion 17a and the first hole 12 of the cam rotor 11 is released.

Therefore, even if the key plate 35 is rotated, the cam rotor 11 does not rotate, the lever connected to the cam rotor 11 also does not rotate, and the lock device is not driven.
According to the above configuration, the lever does not move in the axial direction even when a key plate of a different type is inserted, and the lock cannot be easily released with a simple configuration.

Even if a different type key plate is inserted and rotated, the intermediate rotor 55 rotates together with the rotor 1, so that the key device is not destroyed.

[0044]

As described above, according to the present invention, the intermediate rotor for rotatably holding the rotor is provided in the rotor case, and the rotor and the cam rotor are connected by the cam tumbler. By storing the cam tumbler in the rotor so that the connection between the rotor and the cam tumbler is released, the lever does not move even when inserting a different type key plate, and the lock cannot be unlocked easily. In addition, it is possible to realize a key device that does not break even when a different kind of key plate is inserted.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

2 is a cross-sectional view of the key device shown in FIG. 1 when a regular key plate is inserted.

3 is a sectional view taken along line BB in FIG.

FIG. 4 is a sectional view taken along line C-C in FIG.

5 is a sectional view of the key device shown in FIG. 1 when a different type key plate is inserted.

6 is a sectional view taken along line D-D in FIG.

FIG. 7 is an exploded perspective view of a second embodiment of the present invention.

FIG. 8 is a view on arrow E in FIG.

9 is a sectional view of the key device shown in FIG. 7 when a regular key plate is inserted.

10 is a cross-sectional view of the key device shown in FIG. 7 when a dissimilar key plate is inserted.

FIG. 11 is a sectional view of a key device disclosed in Japanese Utility Model Laid-Open No. 61-197157.

12 is a cross-sectional view taken along the line AA in FIG.

13 is a diagram for explaining the operation in FIG.

[Explanation of symbols]

 1 rotor 2,8,16 key plate insertion hole 3 tumbler groove 4 cam tumbler groove 5 intermediate rotor 6 long groove 7 concave groove 9 tumbler 10 first spring 11 cam rotor 12 first hole 13 rotor case 14 second hole 15 third Hole 17 Cam tumbler 18 Cam slider 19 Hole 20 Second spring 21 Pin 22 Arm 23 Ball 24 Projection 25 Third spring 26 Groove 27 Lever

Claims (2)

[Claims] 1. A tumbler groove (3) diametrically passing through,
A rotor (1) in which a cam tumbler groove (4) is bored and a key plate insertion hole (2) penetrating in the axial direction is formed in one end surface, and a portion of the rotor in which the tumbler groove (3) is formed. Is rotatably held, and the long groove (6) is engraved in the axial direction of the inner cylindrical surface,
An intermediate rotor (5) having a concave groove (7) formed on the outer cylinder surface thereof, and a key plate insertion hole (8) formed at the center thereof, and a tumbler slidably engaged with the tumbler groove (3) ( 9)
And the tumbler (9) provided in the tumbler groove (3)
The first spring (10) for urging the rotor in the direction of engaging the long groove (6) of the intermediate rotor (5) and the portion of the rotor (1) in which the cam tumbler groove (4) is formed are rotatable. A cam rotor (11) for supporting and having a first hole (12) formed on a cylindrical surface thereof, a middle rotor (5) and the cam rotor (11) rotatably supported, and a second hole ( 14) and a rotor case (13) in which a third hole (15) is formed, and the cam tumbler groove (4) are slidably engaged with the first hole (12) of the cam rotor (11). An engageable cam tumbler (17) is slidably engaged with the second hole (14) of the rotor case (13), one end of which can abut the cam tumbler (17), A cam slider (18) having a hole (19) formed on the side surface on the end side of the Provided Kamutanbura groove (4), the first hole of the said Kamutanbura (17) cam rotor (11) (1
2) A second spring (2
0) and an intermediate part is rotatably attached to the rotor case (13), and one end part is a hole (1) of the cam slider (18).
9) an arm (22) loosely fitted to the rotor case (13) and provided in a third hole (15) of the rotor case (13) and engageable with a groove (7) of the intermediate rotor (5);
The cam tumbler (17) includes a ball (23) with which the other end of the arm (22) can abut, and the cam slider (18).
A third spring (25) that urges the other end of the arm (22) against the ball (23) by urging the arm (22) in a further separating direction, and a lever (which engages with the cam rotor (11) ( 27) and a key device comprising: 2. A tumbler groove (3) diametrically passing through,
A rotor (1) in which a cam tumbler groove (4) is bored and a key plate insertion hole (2) penetrating in the axial direction is formed in one end surface, and a portion of the rotor in which the tumbler groove (3) is formed. Is rotatably held, and an intermediate rotor (55) in which a long groove (6) is engraved in the axial direction of the inner cylindrical surface and a key plate insertion hole (8) are formed in the central portion, and the tumbler groove (3 ) Slidably engaged with the tumbler (9)
And the tumbler (9) provided in the tumbler groove (3)
A first spring (10) for urging the rotor in a direction to engage the long groove (6) of the intermediate rotor (55), and a portion of the rotor (1) in which the cam tumbler groove (4) is formed to be rotatable. A cam rotor (11) for supporting and having a first hole (12) formed on a cylindrical surface thereof, a middle rotor (5) and the cam rotor (11) rotatably supported, and a second hole ( 14) formed with a rotor case (63), and a cam tumbler (17) slidably engaged with the cam tumbler groove (4) and engageable with a first hole (12) of the cam rotor (11). A cam slider (68) slidably engaged in the second hole (14) of the rotor case (63) in the radial direction, and one end of which is in contact with the cam tumbler (17); The cam tumbler is provided in the cam tumbler groove (4). First hole of said 17) cam rotor (11) (1
2) A second spring (2
0) and the cam slider (68) to the cam tumbler (17).
A third spring (25) that urges it in a direction further away from it
And a lever (27) that engages with the cam rotor (11). Two end surfaces of the intermediate rotor (55) facing the lever (27) in the radial direction have outer cylindrical surfaces. A notch groove (69) which is a slope in a direction of approaching each other is provided in the lower part of the cam slider (68).
A key device characterized in that a projection (70) that abuts the slope of (9) is provided.