JPH0740940U - Key device - Google Patents

Abstract

(57) [Abstract] [Purpose] When the key plate is inserted into the rotor key plate insertion hole provided in the rotor case and the tumbler key plate insertion hole in the rotor tumbler groove, the tumblers are aligned and the rotor case A key device that is capable of rotating a rotor by being disengaged from a locking groove formed on an inner wall surface of the rotor, has a simple structure, and cannot be easily unlocked, and
An object of the present invention is to provide a key device in which a lever does not move even if a key plate of a different type is inserted and is not damaged. A first rotor case 14 that rotatably holds the rotor 11 and a second rotor case 18 that rotatably holds the first rotor case 14 are provided. A first cam 20, a second cam 24, a slider 31, and a spring 35 that disconnect the connection with the lever 27 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 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 key plate insertion hole of a tumbler in a tumbler groove of a rotor. The key device according to the present invention enables the tumbler to be aligned when it is inserted into, and to be disengaged from the engagement groove formed in the inner wall surface of the rotor case, so that the rotor can rotate.

[0002]

[Prior art]

 Next, a conventional example will be described with reference to the drawings. FIG. 4 is a sectional view of the key device disclosed in Japanese Utility Model Laid-Open No. 61-197157, FIG. 5 is a sectional view taken along line VV in FIG. 4, and FIG. 6 is a diagram for explaining the operation in FIG.

In the figure, a key rotor 100 is rotatably supported by a first rotor case 101. The first rotor case 101 is rotatably supported by the second rotor case 102.

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 surface of the first rotor case 101, and a concave portion 106 with which the convex portion 105 is engaged is formed on the second rotor case. Further, a small diameter portion 107 is formed at 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. 5, the hole 109 of the lever 108 is provided 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 pressed against the key rotor 100 by an E-ring 112 locked to the small-diameter portion 107 of the key rotor 100 and a disc spring 113 having one end engaged with the E-ring 112. Further, reference numeral 114 is a link which has one end of the lever 108 locked to the rotating end and the other end of which is formed in a lock device (not shown) and which transmits the rotational force of the lever 108 to the lock device.

Next, the operation of the above configuration will be described. When the regular key plate is inserted and rotated in the state shown in FIG. 4, 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, the lever 108 rotates, and the locking / unlocking of the locking device (not shown) is performed via the link 114. I do.

Further, when a different type key plate (a key plate in which a regular end face is not formed on the narrow width surface) is inserted and rotated, the key rotor 100 rotates in a state in which the tumbler 104 projects from the key rotor 100. The first rotor case 101 also rotates. When the first rotor case 101 rotates, the convex portion 105 separates from the concave portion 106, the first rotor case 101 retracts in the axial direction, and the lever 108 is pushed against the biasing force of the disc spring 113, so that the key rotor The engagement between the protrusion 110 of 100 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]

[Problems to be solved by the device]

 However, in the case of the key device configured as described above, when a different type key plate is inserted into the key rotor 100 and rotated, the lever 108 retracts. Therefore, 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 arranged 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 configuration, a lever does not move even when a different-type key plate is inserted, the lock cannot be easily released, and a different type is used. An object of the present invention is to provide a key device that does not break even when a key plate is inserted.

[0011]

[Means for Solving the Problems]

 In the present invention which solves the above-mentioned problems, a tumbler groove penetrating in the diameter direction is bored, a hole having a cross-sectional shape other than a perfect circle is opened on one end face, and the other end face is axially oriented. A rotor having a key plate insertion hole penetrating therethrough, and a rotatably holding rotor, in which a long groove is engraved in the axial direction of the inner wall surface, and a projection is formed on one end face. A rotor case, a key plate insertion hole formed in the center, a tumbler slidably engaged with a tumbler groove of the rotor, and a tumbler groove provided in the long groove of the first rotor case. A spring for urging in the engaging direction; a second rotor case that rotatably holds the first rotor case and a guide that extends in the axial direction is formed on one end face of the first rotor case; Facing one end of the rotor case And a through hole is formed in the central portion of the first rotor case. The first rotor case has a first rotor case on a surface that engages with a guide of the second rotor case and faces one end surface of the first rotor case. A first cam having a protrusion capable of riding on the protrusion of the case and a face of the first cam opposite to the face having the protrusion are disposed, and the first cam is provided at a central portion. A second cam having a protrusion that is inserted through the through hole of the second cam and that engages with the hole of the rotor, and the second cam that is disposed on the surface side opposite to the surface facing the first cam. And a lever having a recess in which the second cam engages at the center of rotation and a through hole having a shape other than a perfect circle on the bottom surface of the recess, and the through hole of the lever, A slider that has a protrusion that comes into contact with the cam, is engaged with the through hole of the lever, and is movably provided in the axial direction; Da is ones biasing member Toka Ranaru for biasing said second cam directions.

[0012]

[Action]

 In the key device of the present invention, when the rotor is rotated by using the different key plates, the first rotor case is also rotated, and the protrusion state of the first rotor case and the protrusion of the first cam is prevented. When the second cam is released, the first cam moves toward the rotor, and the engagement between the second cam and the lever is released.

[0013]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a sectional view of an essential part of an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is an external view of the key device shown in FIG.

The difference between the key device 10 of the present embodiment and the conventional key device is the portion C in FIG. 3, and the other parts have the same structure as the conventional key device, and therefore description thereof will be omitted.

In FIGS. 1 and 2, a tumbler groove 12 penetrating in a diametrical direction is bored in the rotor 11, and a hole having a cross section other than a perfect circle is formed in one end face. A hole 13 having an oval surface is formed. In the axial direction of the inner wall surface of the first rotor case 14 that holds the rotor 11 rotatably, two long grooves 15 are engraved at a pitch of 180 °, and one end face has four long grooves 15. The protrusion 16 is formed.

A tumbler 17 having a key plate insertion hole 17a formed in the center is slidably engaged with the tumbler groove 12 of the rotor 11. The tumbler 17 is urged by a spring (not shown) provided in the tumbler groove 12 in a direction to engage with the long groove 15 of the first rotor case 14.

On one end surface of the second rotor case 18 that rotatably holds the first rotor case 14, guide grooves 19 that extend in the axial direction are formed at two 180 ° pitches.

A through hole 21 is formed in the central portion of the first cam 20 arranged so as to face one end surface of the first rotor case 14, and the second rotor case 18 is provided in the peripheral portion. A protrusion 22 that engages with the guide groove 19 is formed. Further, a projection 23 that can ride on the projection 16 of the first rotor case 14 is formed on the surface of the first cam 20 facing the one end surface of the first rotor case 14.

The through hole 21 of the first cam 20 is inserted through the central portion of the second cam 24 arranged on the surface side opposite to the surface on which the projection 23 of the first cam 20 is formed. A protruding portion 25 that engages with the hole 13 of the rotor 11 is formed, and a hole 26 is formed on the surface opposite to the surface facing the first cam 20.

The second cam 20 engages with the center of rotation of the lever 27 disposed on the surface side of the second cam 20 where the hole 26 is formed, and restricts the rotation of the second cam 20. A through hole having a shape other than a perfect circle is formed in the concave portion 28 and the bottom surface of the concave portion 28, and in the present embodiment, a through hole 29 having a shape obtained by combining a circular hole at the center of the cross-shaped through hole is formed.

The cross-sectional shape of the base end portion of the slider 31 having the projection 30 that is inserted into the through hole 29 of the lever 27 and fits into the hole 26 of the second cam 24 is related to the through hole 29 of the lever 27. The holes 32 are formed in a matching cross-sectional shape, and a hole 32 is formed in the bottom surface.

A cover 33 that covers the first cam 20, the second cam 24, and the lever 27 is provided on the bottom of the second rotor case 18, and the slider 31 is axially mounted on the inner surface of the bottom of the cover 33. A guide 34 for guiding is formed. Then, inside the guide 34, the spring 35 is inserted into the hole 32 of the slider 31, presses the bottom surface of the hole 32 of the slider 31, and urges the slider 31 toward the second cam 24. Are arranged.

Next, the operation of the above configuration will be described. The state shown in FIG. 1 shows the case where the rotor 11 is in the locked / unlocked state, and the second cam 24 causes the first cam 20 to move through the slider 31 due to the urging force of the spring 35. It is pushed in the case 14 direction. Further, the protrusion 23 of the first cam 20 rides on the protrusion 16 of the first rotor case, the second cam 24 is pushed toward the lever 27, and the second cam engages with the recess 28 of the lever 27. There is.

When using a regular key plate When the regular key plate is inserted into the key plate insertion hole of the rotor 11 in the state of FIG. 1, the tumbler 17 is aligned in the rotor 11 and the rotor 11 is in a rotatable state. Becomes When the key plate is rotated, only the rotor 11 rotates with the first rotor case 14 stopped, and the rotation of the rotor 11 causes the first rotor case 14 to engage with the oval hole 13 of the rotor 11. The second cam 24 rotates and the lever 27 rotates. By rotating the lever 27, the lock device can be locked / unlocked.

When using a dissimilar key plate When the dissimilar key plate is forcibly inserted into the key plate insertion hole of the rotor 11 in the state of FIG. 1, the tumbler 17 is inserted into the first long groove 15 of the first rotor case 14. It will be in a protruding state.

When the key plate is rotated in this state, the riding state of the protrusion 16 of the first rotor case 14 and the protrusion 23 of the first cam 20 is released. The slider 31, the first cam 20, and the second cam 24 move in the direction of the first rotor case 14 by the biasing force of the spring 35, and the lever 27 is supported by the slider 31 and the second The engagement between the cam 24 and the recess 28 of the lever 27 is released.

When the key plate is further rotated in this state, the rotor 11 and the first rotor case 14 rotate, but the lever 27 does not rotate and the lock device cannot be unlocked. Further, the destruction of the first rotor case 14 does not occur.

Then, when the dissimilar key plate is returned to the original position, the protrusion 16 of the first rotor case 14 rides on the protrusion 23 of the first cam 20, and the second cam 24 causes the biasing force of the spring 35. The second cam 24 engages with the concave portion 28 of the lever 27, and returns to the state of FIG.

According to the above configuration, even if a different type key plate is used, the lock cannot be released easily with a simple configuration, and when the different type key plates are inserted, the first and second rotor cases 14, 18 is not destroyed.

Further, the lever 27 does not move even if a different type key plate is inserted and turned. The present invention is not limited to the above embodiment. In the above embodiment, the second guide 34 is provided with the hole 26 into which the projection 30 of the slider 31 is engaged, but it is not always necessary if the guide 34 can hold the slider 31.

[0031]

[Effect of device]

 As described above, according to the present invention, when the dissimilar key plate is inserted, the connection between the rotor and the lever is released, and the rotor rotates together with the first rotor case, so that the lock can be easily released. In addition, it is possible to realize a key device that does not break even when a different key plate is inserted.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an embodiment of the present invention.

FIG. 2 is an exploded perspective view of FIG.

FIG. 3 is an external view of the key device shown in FIG.

FIG. 4 is a sectional view of a key device disclosed in Japanese Utility Model Laid-Open No. 61-197157.

5 is a sectional view taken along line VV in FIG.

FIG. 6 is a diagram illustrating an operation in FIG.

[Explanation of symbols]

 Reference Signs List 11 rotor 12 tumbler groove 13 hole 14 first rotor case 15 long groove 16 protrusion 17 tumbler 17a key plate insertion hole 18 second rotor case 19 guide groove 20 first cam 21 through hole 22 protrusion 23 protrusion 24 second cam 25 protrusions 26 holes 27 levers 28 recesses 29 through holes 30 protrusions 31 sliders 32 holes 33 covers 34 guides 35 springs

Claims (1)

[Scope of utility model registration request] 1. A tumbler groove (12) diametrically extending therethrough.
A rotor (11) having a hole (13) having a cross-sectional shape other than a perfect circle formed in one end surface thereof, and an axially penetrating key plate insertion hole formed in the other end surface thereof.
And rotatably holding the rotor (11), and an elongated groove (15) is engraved in the axial direction of the inner wall surface, and a projection (1) is formed on one end face.
6) is formed in the first rotor case (14), and the key plate insertion hole (17a) is formed in the central portion, and the tumbler (17) slidably engaged with the tumbler groove (12) of the rotor. And the tumbler (1) provided in the tumbler groove (12).
7) is the long groove (15) of the first rotor case (14)
A spring for urging the first rotor case (14) so that the first rotor case (14) is rotatable,
A second rotor case (18) having an axially extending guide (19) formed on one end face thereof, and a second rotor case (18) arranged to face one end face of the first rotor case (14) and having a central portion. A through hole (21) is formed in the portion, and the guide (19) of the second rotor case (18) is formed.
On the surface of the first rotor case (14) facing the one end surface of the first rotor case (14).
First cam (20) having a protrusion (23) capable of riding on the protrusion (16) of the first cam (20), and a surface opposite to the surface of the first cam (20) on which the protrusion (23) is formed The first cam (2
Second cam (20) having a protrusion (25) which is inserted through the through hole (21) of the rotor (11) and engages with the hole (13) of the rotor (11), and the second cam (20). And a concave portion (28) which is disposed on the surface side opposite to the surface facing the first cam (20) and in which the second cam (20) engages with the rotation center portion. The lever (27) having a through hole (29) having a shape other than a perfect circle formed on the bottom surface of the lever (27) is inserted through the through hole (29) of the lever (27),
A slider (31) provided with a protrusion (30) for abutting against the cam (20), engaged with the through hole (29) of the lever (27) and movable in the axial direction, and the slider (31). And a biasing member (35) for biasing (31) in the direction of the second cam (24).