JP2003336419A - Lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device for a dimple key that can ensure an unlocking action by continuously accurately aligning dimples in a flat dimple key with pin tumblers. <P>SOLUTION: The lock device for a dimple key, which comprises a housing 1 with fixed contacts 6a, a turning member 2 with moving contacts 7a, the plurality of pin tumblers 3 arrayed concentrically with a turning axis of the turning member, and slide pieces 4 slidable between a permitting position to permit a turn of the turning member 2 and a locking position to restrict it in an interlocked relation to a vertical slide of the pin tumblers 3, comprises a cap 5 swingable between a closing position to cover and close an upper end face of the turning member 2 and an opening position to open the upper end face. The cap 5 is provided with fixing means 13 and 14 for fixedly positioning a dimple key K. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device that can be unlocked by matching a dimple formed on a flat plate-shaped dimple key with a pin tumbler.

[0002]

2. Description of the Related Art Generally, a two-wheeled vehicle or the like is provided with an ignition switch having a switch function for turning on and off a battery circuit in order to enable starting of an engine. Such an ignition switch includes a key cylinder into which an ignition key can be inserted. The key cylinder internally includes a rotor having a key hole into which an ignition key is inserted, and a plurality of plate-shaped tumblers (disc tumblers) corresponding to the ignition key are arranged in the key hole.

That is, the plate-shaped tumblers arranged substantially parallel to the extending direction of the key holes move horizontally as the ignition key is inserted into the key hole, and are formed on the side surface of the ignition key. It is configured so that the rotor can be rotated and the switch mechanism formed at the lower end side can be connected only when the position corresponding to the key ridge is set and the state after the movement is set to the specific position. Was there.

[0004]

However, in the above-mentioned conventional locking device, since a plurality of plate-shaped tumblers are arranged in the extending direction of the key hole, the length of the ignition key (strict Requires a space corresponding to the dimension in which the key ridge is formed, and there is a problem that the layout around the ignition switch is greatly restricted particularly in a vehicle such as a motorcycle where it is difficult to secure a space.

On the other hand, in order to reduce the space of the lock device, a pin-shaped pin tumbler is slid vertically by using a plate-shaped dimple key having a plurality of dimples (recesses) formed on the same circumference. According to the technology for making a member having a switch function (a rotating member) rotatable, for example, a utility model registration publication (Japanese Utility Model No. 2595210 publication).
Is disclosed in.

According to the lock device disclosed in the publication,
Since it is sufficient to secure the sliding dimension of the pin tumbler in the vertical direction, the entire device can be made smaller than that using the plate tumbler, but the plate dimple key can be used in the horizontal direction. (Side direction of pin tumbler)
Since the gripping portion formed on the dimple key is gripped and rotated by inserting it from above, there is a possibility that the dimple and the tip of the pin tumbler do not exactly match, and the dimple may deviate from the tip of the pin tumbler during rotation. there were.

That is, in order to allow the dimple key to be inserted in the horizontal direction, it is necessary to secure a clearance at the insertion port of the dimple key, and the dimple key is displaced in the plane direction by the clearance. is there. Therefore, only by inserting the dimple key into the insertion opening, the positions of the dimple and the tip of the pin tumbler do not necessarily match, and there is a possibility that the lock cannot be released.

The present invention has been made in view of the above circumstances, and provides a locking device capable of always accurately aligning the dimples of the flat plate-shaped dimple key with the pin tumbler and reliably releasing the lock. Especially.

[0009]

The invention according to claim 1 is
A rotating member that is rotatable in the housing, and a plurality of rotating members that are radially arranged around the rotating shaft of the rotating member and slide downward from a state in which the upper end surface of the rotating member protrudes by a predetermined dimension. A pin tumbler that is movable, and an allowable position that allows the rotation of the rotation member with respect to the housing, and a rotation of the rotation member with respect to the housing, in conjunction with the vertical movement of the pin tumbler. A slide piece that slides between a lock position and a flat dimple key having dimples each having a predetermined depth formed at a position corresponding to the pin tumbler is fitted to the upper end surface of the rotating member, Each of the pin tumblers pressed by the dimples slides downward by a predetermined dimension, so that the slide piece in the lock position slides to the allowance position, and the slide piece in the housing of the rotating member is opposed. In a lock device that allows the rotation of the rotating member to be unlocked, a cap that is swingable between a closed position that covers and closes the upper end surface of the rotating member and an open position that opens the upper end surface is provided. The cap is provided with fixing means for positioning and fixing the dimple key.

According to this structure, with the cap in the open position, the dimple key is positioned and fixed to the fixing means and then swung to the closed position. As a result, the dimples of the dimple key match the tip of the pin tumbler and slide the pin tumbler downward by a predetermined dimension, and the slide piece in the locked position slides to the allowable position.

When the slide piece slides to the allowance position, the turning member is allowed to turn and the lock is released.

According to a second aspect of the present invention, a positioning hole is formed in a part of the dimple key, and the fixing means has a protrusion that can be inserted into the positioning hole.
And a biasing means for pressing the dimple key in one direction in its plane in a state where the protrusion is inserted into the positioning hole.

The invention according to claim 3 is characterized in that the cap further comprises a holding means for maintaining the cap in the open position.

According to a fourth aspect of the invention, the cap is
It is characterized in that it is attached to the upper surface side of the rotating member and that a knob portion is formed on the upper portion at the closed position.

According to a fifth aspect of the present invention, a fixed contact is formed in the housing, and the rotating member has a movable contact that can be connected to or separated from the fixed contact, and the movable contact and the fixed contact are It is characterized in that it constitutes an ignition switch of a vehicle.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. The lock device according to the present embodiment is attached to an ignition switch of a two-wheeled vehicle and can unlock the switch operation only with a specific dimple key. As shown in FIG. 1, a housing 1, a rotating member 2, and a pin are provided. It has a tumbler 3, a slide piece 4, and a cap 5, and can be unlocked with a dimple key K (see FIG. 5).

The housing 1 corresponds to a conventional key cylinder, and has a fixed side terminal block 6 having upper and lower ends opened and a fixed contact 6a formed on the lower end side. The fixed-side terminal block 6 is press-fitted and fixed in the lower end opening of the housing 1, and the fixed contact 6a is provided on the upper end surface thereof.
Is formed, and an insertion port for inserting a connector to connect the fixed contact 6a to a battery circuit is formed at the lower end.

The rotating member 2 corresponds to a conventional rotor and is composed of a cylindrical member which is rotatable in the housing 1 about a rotating shaft m, and the fixed contact 6 is formed by the rotating member.
It has a movable contact 7a that can be connected to or separated from a. The movable contact 7a is formed on the movable side terminal block 7 formed at a position facing the fixed side terminal block 6, and is movable by rotating the movable side terminal block 7 together with the rotating member 2. The contact 7a slides on the upper surface of the fixed-side terminal block 6 and is connected to or separated from the fixed contact 6a to perform a switch operation. The movable contact 7a and the fixed contact 6a constitute an ignition switch of a motorcycle.

A guide pin 2a extending upward from the center of the upper surface of the rotating member 2 is provided in a protruding manner, and an accommodating hole 2b extending vertically for accommodating a pin tumbler 3 described later is concentric. A plurality of them are formed on the top.
The housing hole 2b is formed in the large-diameter portion 2d that constitutes the rotating member 2, and the shaft portion 2c is formed downward along the rotation axis m thereof.
Are formed.

A lock block 8 forming a part of the housing 1 is fixedly provided on the lower surface side of the large diameter portion 2d, and the lock block 8 communicates with each accommodation hole 2b. Are formed. In the normal lock state (that is, when the dimple key K is not matched), the lock block 8 and the large-diameter portion 2 of the rotating member 2 are locked.
The slide piece 4 is configured to be located on the boundary surface with d. Further, the lock block 8 is the housing 1
May be integrally configured.

The pin tumbler 3 comprises a pin-shaped tumbler, and as shown in FIG. 2, a plurality of pin tumblers are arranged at equal intervals on a concentric circle centered on the rotation axis m of the rotation member 2 (8 in this embodiment). In order to be provided, each of them is accommodated in the accommodation hole 2b and protrudes from the upper end surface of the rotating member 2 by a predetermined dimension. The pin tumbler 3 is
It suffices that a plurality of radial arrangements are made around the rotation axis m, and they need not be concentric or evenly spaced.

That is, as shown in FIG. 3, the pin tumbler 3 is composed of an upper small diameter portion 3a and a lower large diameter portion 3b, and is always upward by a coil spring 9 provided via a slide piece 4. It is accommodated in the accommodation hole 2b while being urged, and its shoulder 3c abuts on the stepped portion 2ba of the accommodation hole 2b, thereby restricting further upward movement. Therefore, the small-diameter portion 3a usually has a predetermined size t.
Only when it is projected from the upper surface of the large diameter portion 2d, it can slide downward against the urging force of the coil spring 9 when pressed from above.

The slide piece 4 is composed of a cylindrical member having a diameter substantially the same as the large diameter portion of the pin tumbler 3, and is interlocked with the vertical sliding of the pin tumbler 3 to rotate the rotating member 2 with respect to the housing 1. Allowable position (state of Figure 4)
And the locking position (state of FIG. 3) that restricts the rotation of the rotating member 2 with respect to the housing 1 slides in the accommodation hole 2b or the communication hole 8a.

That is, when the slide piece 4 is located at the boundary between the lock block 8 and the large diameter portion 2d of the rotating member 2 (state of FIG. 3), even if the rotating member 2 is rotated, Since the slide piece 4 is locked to the large diameter portion 3b, the slide piece 4 cannot be rotated and is in a locked state. On the other hand, the pin tumbler 3 slides downward by a predetermined size,
Accordingly, when the slide piece 4 descends to the position shown in FIG. 4, the rotating member 2 is rotatable while pulling in the pin tumbler 3, and the lock is released.

The dimple key K, which is applied to the lock device having the above-mentioned structure, for unlocking, has a substantially circular main portion K1 and a grip portion which projects laterally in the same plane from the outer peripheral portion of the main portion K1. The portion K2 is made of a metal flat plate integrally formed. Dimples (recesses) 10 each having a predetermined depth are formed at positions corresponding to the above-described pin tumbler 3 in the main portion K1.

As shown in FIG. 6, the dimples 10 are formed to have different depths (dimensions x or y in the figure), and the combination thereof serves as a key mountain of a conventional ignition key. Has become. In other words, the lengths of the pin tumblers 3 are made different, and various combinations are made, while the depths of the respective dimples 10 are adjusted so that the slide piece 4 becomes the allowable position when the respective pin tumblers 3 descend. By selecting various combinations, the specific dimple key is configured to unlock only the specific locking device.

Further, an insertion hole K1a into which the guide pin 2a can be inserted is formed substantially in the center of the main portion K1 of the dimple key K, and a positioning elongated hole K1b is provided on the gripping portion K2 side. Has been formed. The through hole K2a formed in the center of the grip portion K2 is a hole for inserting a ring of the key holder, for example, and may not be formed.

A part of the cap 5 is attached to the swing shaft L formed on the upper surface side of the housing 1 and covers the upper end surface of the rotating member 2 to close it (shown by the solid line in FIG. 1). (State) and an open position (state shown by a two-dot chain line in the same figure) that opens the upper end surface thereof, and is swingable. A direction in which the torsion spring 11 is wound around the swing shaft L and one end thereof is fixed to the cap 5 side while the other end is fixed to the housing 1 side and the cap 5 swings to the closed position. Is urged to.

On the outer surface of the cap 5 (upper part at the closed position), a knob portion 12 as shown in FIG. This knob part 1
Reference numeral 2 denotes an operator who can rotate the cap 5 by grasping it with a fingertip, and is extended linearly in the diameter direction of the cap 5. Instead of the knob portion 12, a knob portion having another shape may be used, or a separate knob portion may be fixed to the upper portion of the cap 5 with an adhesive or the like.

The bottom surface of the cap 5 (the rotating member 2 in the closed position)
As shown in FIG. 8, a concave portion 5a having a shape corresponding to the outer contour of the main portion K1 of the dimple key K (and a part of the gripping portion K2) is formed on the upper surface of the dimple key K. The dimple key K can be fitted into the recess 5a so as to match it.

A guide hole 5b is formed substantially in the center of the cap 5 in the recess 5a.
Is pivoted to the closed position, the guide pin 2a is inserted through the insertion hole K1a of the dimple key K, and the protruding end thereof is fitted into the guide hole 5b. As a result, the projecting end of the guide pin 2a is guided so as to fit into the guide hole 5b, so that the cap 5 in the closed position relative to the housing 1 (and the rotating member 2) is always constant, and therefore the dimple key K The relative position of the rotating member 2 with respect to the rotating member 2 (pin tumbler 3) is always constant.

Further, on the bottom surface of the cap 5, there are provided a projection 13 which constitutes a fixing means for positioning and fixing the dimple key K, and a leaf spring 14 as a biasing means. As shown in FIG. 9, the projecting portion 13 is formed of a convex portion that can be inserted into the positioning long hole K1b formed in the dimple key K, and the leaf spring 14 is elastically deformed to cause the long hole K1b. The dimple key K with the protrusion 13 fitted therein is pressed in one direction (in the direction of the arrow in the figure) within its surface (the front surface or the back surface of the dimple key K).

According to the fixing means, the dimple key K is pressed leftward in the figure by the leaf spring 14, so that the protrusion 13 always comes into contact with the right end edge of the elongated hole K1b. Positioning and fixing can be performed.
Therefore, the dimple key K can be positioned more reliably with respect to the cap 5, and the dimple 10 can always be accurately aligned with the position of the pin tumbler 3. Instead of the leaf spring 14, other biasing means (a coil spring, a resin member rich in elasticity, etc.) may be used.

Next, the operation of the lock device having the above structure will be described. First, the cap 5 is swung to the open position so that the upper end surface of the rotating member 2 and the tip of the pin tumbler 3 face upward, and in this open state, the dimple key K is placed in the recess 5a on the bottom surface side of the cap 5. Insert and position and fix. In order to position and fix the dimple key K, the grip portion K2 of the dimple key K is gripped, while the elongated hole K1b of the dimple key K is fixed to the projection portion 1.
While being inserted through 3, it is brought into a substantially horizontal state, and is slightly pushed in to bring the tip thereof into contact with the leaf spring 14.

After that, when the grasped hand is released, the dimple key K is positioned and fixed in the state of FIG. 9, and the cap 5 is swung to the closed position as it is. At this time, since the cap 5 is biased in the closing direction by the torsion spring 11, the operability can be improved because the cap 5 naturally swings to the closed position when the hand holding the cap 5 is released.

When the cap 5 swings to the closed position, the dimple 10 of the dimple key K presses the tip of the pin tumbler 3 and slides it downward by a predetermined amount in the accommodation hole 2b by the depth thereof. As the pin tumbler 3 slides, the slide piece 4 also slides from the lock position to the allowance position. If the specific dimple key K is not used, even if the pin tumbler 3 is pressed by the dimple 10, the slide piece 4 does not descend to the allowable position, and the rotating member 2 continues to be locked.

When the slide piece 4 is lowered to the allowable position and unlocked, when the knob 5 is grasped and the cap 5 is rotated in a predetermined direction, the rotating member 2 connected thereto is also rotated. The movable contact and the fixed contact are connected by rotating around the axis m. As a result, the battery circuit is configured and the engine of the motorcycle can be started.

With the above operation, a series of unlocking is completed. To stop the engine and remove the dimple key K from the lock device, the knob 5 is pinched and the cap 5 is rotated to the initial position. Swing 5 from the closed position to the open position. After that, the grip portion K2 is gripped to separate the protrusion 13 from the long hole K1b, and the dimple key K is pulled out from the bottom surface of the cap 5.

According to this embodiment, the rotating member 2 (and the pin tumbler 3) is provided with the cap 5 capable of opening and closing, and the dimple key K is provided on the bottom surface of the cap 5.
Since the position is fixed, the dimple 10 will naturally be positioned accurately at the tip of the pin tumbler 3 when the cap 5 is closed, and the dimples of the flat plate dimple key are always accurately aligned with the pin tumbler to ensure the unlocking. Can be done.

Further, since the cap 5 is guided by the guide pin 2a, the relative position between the cap 5 in the closed position and the upper end surface of the rotating member 2 can be made constant at all times. The dimple 10 in the dimple key K, which is positioned and fixed, can always be accurately matched with the tip position of each pin tumbler 3. The fixing means formed on the bottom surface of the cap 5 may have another form as long as it can position and fix the dimple key K.

Although the present embodiment has been described above, the present invention is not limited to this, and the torsion spring 11 is used.
In addition to the above, the holding means as shown in FIG. 10 may be provided. The holding means gently swells the swing end side of the cap 5 ′ (the side on which the swing shaft 5′a is disposed) so as to keep the cap 5 ′ in the open position. While forming the part 17,
It comprises a locking member 15 for pressing the rocking end side upward, and a coil spring 16 for urging the locking member 15 upward.

As a result, when the cap 5'is in the open position as shown in the figure, the locking member 15 is locked to the bulging portion 17 and the state is maintained, and the cap 5'is rotated by the swing shaft. When swinging around 5'a, the locking member 15 resists the biasing force of the coil spring 16 and the bulging portion 1
7 is lowered along the outer edge shape to be in the state of FIG. 11 (that is, the closed position). Therefore, when positioning and fixing the dimple key K to the cap 5 ', the operator does not need to have the cap 5'to prevent the cap 5'from swinging, and the operability in positioning and fixing the dimple key K is improved. Can be made.

Further, although the present embodiment is applied to the lock device in the ignition switch of the two-wheeled vehicle, it may be applied to the ignition switch in another vehicle such as a four-wheeled vehicle. Of course, the locking device of the present invention is
The invention is not limited to the ignition switch, but can be applied to various other switches that require locking and unlocking.

[0044]

According to the first aspect of the present invention, the dimple key is positioned and fixed to the fixing means formed on the cap. Therefore, when the cap is swung to the closed position, the dimple is attached to the tip of the pin tumbler. Since it is positioned accurately, the dimples of the plate-shaped dimple key can always be accurately matched with the pin tumbler, and the lock can be reliably released.

According to the second aspect of the present invention, since the biasing means presses the dimple key in one direction within the plane in the state where the projection is inserted into the positioning hole, the peripheral edge portion of the positioning hole. Since the protrusion is always in contact with the specific portion of the dimple key, the dimple key can be more reliably positioned with respect to the cap.

According to the third aspect of the present invention, the holding means holds the cap in the open position. Therefore, when the dimple key is positioned and fixed to the cap, the operator holds the cap so that the cap does not swing. Therefore, it is possible to improve operability when positioning and fixing the dimple key.

According to the fourth aspect of the present invention, since the knob portion is formed on the upper portion of the cap when the cap is in the closed position, the knob portion is positioned after the dimple key is positioned and fixed, and then the knob portion is formed. By pinching and rotating, the rotating member can be rotated, and the operability can be further improved. Further, as compared with the case where the dimple key is gripped and rotated, it is possible to prevent the dimple of the dimple key from being displaced from the tip of the pin tumbler at the time of rotation, and it is possible to release the lock more accurately.

According to the fifth aspect of the present invention, since the movable contact and the fixed contact formed on the rotating member and the housing constitute an ignition switch of the vehicle, the space around the ignition switch can be effectively used. It is possible to increase the degree of freedom of layout in the surroundings.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a lock device according to an embodiment of the present invention.

FIG. 2 is a top view showing a rotating member in the lock device according to the embodiment of the present invention.

FIG. 3 is a schematic sectional view showing a pin tumbler and a slide piece in a locked position in the lock device according to the embodiment of the present invention.

FIG. 4 is a schematic cross-sectional view showing a pin tumbler and a slide piece in an allowable position in the lock device according to the embodiment of the present invention.

FIG. 5 is a top view and a side view showing a dimple key applied to the locking device according to the embodiment of the present invention.

FIG. 6 is an enlarged cross-sectional view showing dimples of the dimple key in FIG.

FIG. 7 is a top view showing a cap in the lock device according to the embodiment of the present invention.

FIG. 8 is a bottom view of the cap in FIG.

FIG. 9 is a partially enlarged view showing a state in which the dimple key is positioned and fixed to the bottom surface of the cap in the lock device according to the embodiment of the present invention.

FIG. 10 is a schematic view showing a cap and its swinging portion in a lock device according to another embodiment of the present invention (when the cap is at the open position).

FIG. 11 is a schematic view showing a cap and its swinging portion in a lock device according to another embodiment of the present invention (when the cap is in the closed position).

[Explanation of symbols]

1 ... Housing 2 ... Rotating member 3 ... Pin tumbler 4… Slide piece 5, 5 '... Cap 6 ... Fixed side terminal block 6a ... Fixed contact 7 ... Movable side terminal block 7a ... movable contact 8 ... Lock block 9 ... Coil spring 10 ... Dimples 11 ... torsion spring 12 ... Knob 13 ... Projection 14 ... Leaf spring 15 ... Locking member 16 ... Coil spring 17 ... bulge K ... Dimple key K1b ... long hole (positioning hole) L ... swing axis m ... Rotation axis (of rotation member)

Claims (5)

[Claims] 1. A rotating member that is rotatable in a housing, and a plurality of rotating members that are radially arranged around a rotating shaft of the rotating member and project from the upper end surface of the rotating member by a predetermined dimension. A pin tumbler slidable downwardly from the above, and a permissible position for interlocking with the vertical sliding of the pin tumbler and permitting rotation of the rotating member with respect to the housing,
A slide piece that slides between a locking position that restricts rotation of the rotating member with respect to the housing, and a dimple having a flat plate shape in which dimples each having a predetermined depth are formed at positions corresponding to the pin tumbler. Align the key with the upper end surface of the rotating member and slide the pin tumblers pressed by the dimples downward by a predetermined dimension to slide the slide piece in the locked position to the allowable position. In a lock device that allows rotation of a moving member with respect to a housing to release a lock, the locking device is capable of swinging between a closed position that covers and closes an upper end surface of the rotating member and an open position that opens the upper end surface. Locking device for fixing the dimple key to the cap. 2. A positioning hole is formed in a part of the dimple key, and the fixing means inserts a protrusion into the positioning hole, and the protrusion inserts into the positioning hole. 2. The locking device according to claim 1, further comprising a biasing unit that presses the dimple key in one direction in its plane in a locked state. 3. The lock device according to claim 2, further comprising holding means for maintaining the cap in the open position. 4. The cap is attached to an upper surface side of the rotating member, and a knob portion is formed on an upper portion at a closed position.
The locking device according to any one of 1. 5. A fixed contact is formed on the housing, and the rotating member has a movable contact that can be connected to or separated from the fixed contact, and the movable contact and the fixed contact form an ignition switch of a vehicle. The locking device according to any one of claims 1 to 4, wherein: