JP2600311Y2 - Key device - Google Patents

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 a door of a motor vehicle, and more particularly to a key plate provided in a rotor case. The present invention relates to a key device in which the tumbler is aligned when inserted into a key plate insertion hole of the tumbler, disengaged from a locking groove formed in an inner wall surface of the rotor case, and the rotor can be rotated.

[0002]

2. Description of the Related Art Next, a conventional example will be described with reference to the drawings.
4 is a sectional view of a 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 FIG. 1, a key rotor 100 is rotatably supported by a first rotor case 101. The first rotor case 101 is the second rotor case 1
02 is rotatably supported.

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

A convex portion 105 is formed on the front end surface of the first rotor case 101, and the second rotor case has
A concave portion 106 with which the convex portion 105 is engaged is formed. 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 of the lever 108 is inserted through the small diameter portion 107.

As shown in FIG. 5, a hole 109 of the lever 108 has an engaging portion 111 which engages with a projection 110 formed on the small diameter portion 107 of the key rotor 100. Further, the lever 108 is connected to the small diameter portion 107 of the key rotor 100.
The key rotor 10 is fixed by an E-ring 112 locked to the E-ring 112 and a disc spring 113 having one end engaged with the E-ring 112.
It is pressed against 0. Reference numeral 114 denotes a link for locking one end of the lever 108 to the rotating end, and the other end of the lever 108 formed in 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. When a regular key plate is inserted and turned 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, and the lever 10
8 rotates and locks / unlocks a lock device (not shown) via the link 114.

Further, when a different kind of key plate (a key plate having no regular ridge end face formed on a narrow surface) is inserted and turned, the key rotor 100 rotates with the tumbler 104 protruding from the key rotor 100. Of the rotor case 101 also rotates. If the first rotor case is 10
When 1 rotates, the convex portion 105 separates from the concave portion 106,
The first rotor case 101 retreats in the axial direction, and the lever 1
08 is pressed against the urging force of the disc spring 113, the engagement between the projection 110 of the key rotor 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]

However, in the case of the key device having the above structure, when a different key plate is inserted into the key rotor 100 and turned, the lever 108 is retracted. 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 that nothing can be arranged within the movement range of the link 114.

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

[0011]

According to the present invention for solving the above-mentioned problems, a tumbler groove penetrating in the diameter direction is formed, and a hole having a cross section other than a perfect circle is formed on one end face, A rotor provided with a key plate insertion hole penetrating in the axial direction on the other end surface, a rotatable holding the rotor, and a long groove formed in the inner wall surface in the axial direction, and a protrusion on one end surface. A tumbler having a key plate insertion hole formed in the center thereof and slidably engaged with the tumbler groove of the rotor; and a tumbler provided in the tumbler groove. A second rotor having a spring for urging in a direction engaging with the long groove of the first rotor case and a guide rotatably holding the first rotor case and having an axially extending guide formed on one end face; A case and the first rotor case It is arranged so as to face one end face, a through hole is formed in the center, and engages with the guide of the second rotor case, and is formed on a face facing one end face of the first rotor case. A first cam having a projection formed thereon that can ride on the projection of the first rotor case;
The first cam is provided on a surface opposite to the surface on which the projection is formed, and has a projection inserted into the center of the through hole of the first cam and engaged with the hole of the rotor. A second cam, a concave portion provided on the surface of the second cam opposite to the surface facing the first cam, the concave portion being engaged with the second cam at the center of rotation; A lever having a through-hole having a shape other than a perfect circle formed on the bottom surface thereof;
A slider that has a projection that abuts the cam of the lever, engages with the through hole of the lever, and is provided movably in the axial direction; and a biasing member that biases the slider in the second cam direction. It becomes.

[0012]

In the key device of the present invention, when the rotor is to be rotated using a different type of key plate, the first rotor case also rotates together with the projection of the first rotor case and the first rotor case.
The first cam moves toward the rotor, and the engagement between the second cam and the lever is released.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a sectional view of a main part of an embodiment of the present invention, and FIG.
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 a portion C in FIG. 3, and the other portions are the same in structure as the conventional key device, so that the description thereof will be omitted.

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

The tumbler groove 12 of the rotor 11 has a tumbler 17 having a key plate insertion hole 17a formed in the center.
Are slidably engaged. 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 which rotatably holds the first rotor case 14, two axially extending guide grooves 19 are formed at 180 ° pitch.

A through hole 21 is formed in the center of a first cam 20 disposed to face one end face of the first rotor case 14, and the second rotor case 1 is formed in a peripheral portion thereof.
A projection 22 that engages with the guide groove 19 is formed. Furthermore, the first rotor case 1 of the first cam 20
A projection 23 is formed on a surface facing one end face of the projection 4 so as to ride on the projection 16 of the first rotor case 14.

A through hole 21 of the first cam 20 is inserted into the center of a second cam 24 provided on the surface of the first cam 20 opposite to the surface on which the projection 23 is formed. , Rotor 11
A projection 25 engaging with the hole 13 of the first cam 2 is formed.
A hole 26 is formed on the surface opposite to the surface facing 0.

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

The cross-sectional shape of the proximal end of the slider 31 having the projection 30 which is inserted through the through hole 29 of the lever 27 and fits into the hole 26 of the second cam 24 is engaged with the through hole 29 of the lever 27. The hole 32 is formed in the bottom surface.

At the bottom of the second rotor case 18, a first
Cover 3, which covers the cam 20, the second cam 24, and the lever 27
A cover 3 is provided on the inner surface of the bottom of the cover 33.
A guide 34 that guides 1 in the axial direction is formed. In the guide 34, there is provided a spring 35 as an urging member which is inserted into the hole 32 of the slider 31 and presses the bottom surface of the hole 32 of the slider 31 to urge the slider 31 in the direction of the second cam 24. Has been established.

Next, the operation of the above configuration will be described. The state shown in FIG. 1 shows a case where the rotor 11 is in the locked / unlocked state, and the second cam 24 causes the first cam 20 to move to the first cam 20 via the slider 31 by the urging force of the spring 35.
In the direction of the rotor case 14. The projection 23 of the first cam 20 rides on the projection 16 of the first rotor case, the second cam 24 is pushed in the direction of the lever 27, and the second cam engages with the recess 28 of the lever 27. I have.

When a Regular Key Plate is Used 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. . 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 oval hole 1 of the rotor 11 to rotate.
The second cam 24 engaging with 3 rotates, and the lever 27 rotates. By the rotation of the lever 27, the lock device can be locked / unlocked.

When a Different Key Plate is Used In the state of FIG. 1, when a different key plate is forcibly inserted into the key plate insertion hole of the rotor 11, the tumbler 17 protrudes into the first long groove 15 of the first rotor case 14. State.

When the key plate is rotated in this state, the riding state of the projection 16 of the first rotor case 14 and the projection 23 of the first cam 20 is released. Then, the slider 31 and the first cam 2 are moved by the urging force of the spring 35.
The 0 and second cams 24 move toward the first rotor case 14, the lever 27 is supported by the slider 31, and the engagement between the second cam 24 and the concave portion 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 of the lock device cannot be released. Further, the first rotor case 14 does not break.

When the different key plate is returned to the original position, the projection 16 of the first rotor case 14 rides on the projection 23 of the first cam 20, and the second cam 24 resists the urging force of the spring 35. To move in the direction of the lever 27,
1 engages with the concave portion 28 of the lever 27 and returns to the state shown in FIG.

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

Further, even if a different key plate is inserted and turned, the lever 27 does not move. The present invention is not limited to the above embodiment. In the above embodiment, the second guide 34 has the hole 2 with which the projection 30 of the slider 31 is engaged.
Although 6 is provided, it is not always necessary if the slider 31 can be held by the guide 34.

[0031]

As described above, according to the present invention, when a different key plate is inserted, the connection between the rotor and the lever is released, and the rotor rotates together with the first rotor case. Unable to unlock,
A key device that does not break even when a different type of key plate is inserted can be realized.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main 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. 1;

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

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

FIG. 6 is a diagram for explaining the operation in FIG. 4;

[Explanation of symbols]

 Reference Signs List 11 rotor 12 tumbler groove 13 hole 14 first rotor case 15 long groove 16 projection 17 tumbler 17a key plate insertion hole 18 second rotor case 19 guide groove 20 first cam 21 through hole 22 projection 23 projection 24 second cam 25 Projection 26 Hole 27 Lever 28 Recess 29 Through Hole 30 Projection 31 Slider 32 Hole 33 Cover 34 Guide 35 Spring

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) E05B 29/04 E05B 29/00 E05B 65/20 E05B 29/02

Claims (1)

(57) [Scope of request for utility model registration] 1. A tumbler groove (12) penetrating diametrically.
A rotor (11) having a hole (13) having a cross-sectional shape other than a perfect circle at one end face and a key plate insertion hole penetrating in the axial direction at the other end face.
The rotor (11) is rotatably held, and a long groove (15) is engraved in the axial direction of the inner wall surface, and a protrusion (1) is formed on one end surface.
A first rotor case (14) formed with 6), and a tumbler (17) slidably engaged with a tumbler groove (12) of the rotor, in which a key plate insertion hole (17a) is formed in the center. The tumbler (1) is provided in the tumbler groove (12).
7) replace the long groove (15) of the first rotor case (14).
A spring for urging in a direction in which the first rotor case (14) is engaged with the first rotor case (14);
A second rotor case (18) having an axially extending guide (19) formed on one end face; and a second rotor case (18) arranged to face one end face of the first rotor case (14), A through hole (21) is formed in the portion, and a guide (19) of the second rotor case (18) is provided.
And the first rotor case (14) has a surface facing the one end surface of the first rotor case (14).
A first cam (20) formed with a projection (23) that can ride on the projection (16) of the first cam (20); and a surface side of the first cam (20) opposite to the surface on which the projection (23) is formed. And the first cam (2
A second cam (20) having a projection (25) which is inserted through the through hole (21) of the first cam (0) and engages with the hole (13) of the rotor (11); A concave portion (28) which is disposed on a surface opposite to a surface facing the first cam (20), and in which the second cam (20) is engaged with a center of rotation; and a concave portion (28). A lever (27) having a through hole (29) having a shape other than a perfect circle formed in the bottom surface of the lever (27) is inserted through the through hole (29) of the lever (27).
A slider (31) having a projection (30) abutting on the cam (20), engaging with the through hole (29) of the lever (27), and being provided movably in the axial direction; 31) a biasing member (35) for biasing the second cam (24) toward the second cam (24).