JPS6128851Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a type of cylinder lock that can be unlocked not only by key operation but also by performing a certain operation even without a key, and in particular relates to a steering lock device of an automobile. This invention relates to a cylinder lock suitable for cars and trunks.

Recently, cylinder locks of this type have been provided in the automobile field, but they generally have complicated structures.

The present invention provides a cylinder lock that is extremely simple in structure and easy to manufacture, and can be used for both key and non-key unlocking of a vehicle.

The present invention will be described in detail below with reference to the illustrated embodiments. In this embodiment, the present invention is applied to a steering lock device for an automobile.

In the figure, reference numeral 1 denotes a body of a steering lock device, in which a rotor case 2 is housed and fixed. Further, a rotary cylinder 7 is fitted on the outer periphery of the rotor case, and a rotor 3 having a knob 5 fixed to the front part thereof is rotatably housed. An electromagnetic solenoid 4 is fixed to a predetermined position on the outer circumference of the body 1 by a bracket 10.

The internal structure of the rotor itself is well known;
A plurality of tumblers 8 radially biased by springs 9 are arranged in parallel in the axial direction.

Each of the tumblers 8 is provided on the inner surface of the rotary cylinder 7.
Grooves 7a and 7b extending in the axial direction are formed into which both end portions 8a and 8b are fitted. As shown in FIG. 2, when the key (not shown) is removed, each tumbler 8 is biased to the left in the figure by the spring force of the spring 9, and the end portion 8b is pushed into the groove. 7b. On the other hand, when the key is inserted into the key hole 3a of the rotor, the tumbler 8 is moved to the center position by the key against the spring force of the spring 9, and each end 8a, 8b is moved from the outer peripheral surface of the rotor 3. be pulled inside.

On the other hand, holes 7c, 2a, and 1a into which the plunger 4a of the electromagnetic solenoid 4 is fitted are formed at predetermined positions in the rotating cylinder 7, the rotor case 2, and the body 1. When the switch S connected to the power source E is off, the plunger 4a is connected to each hole 7c, 2.
a, 1a, but when the switch is turned on, it is retracted to the position shown by the broken line in FIG. The switch S is installed, for example, in an instrument panel of an automobile.

Note that 6 in the figure is a transmission member for transmitting the rotation of the rotor 3 to the ignition switch and the lock bar.

The structure of this cylinder lock is as described above,
The operating procedure is as follows.

When unlocking with a key, there is no difference from a normal cylinder lock. That is, it is sufficient to insert the key into the key hole 3a of the rotor 3, move the tumbler 8 to the neutral position, and rotate it in a predetermined direction. Since the rotating cylinder 7 is prevented from rotating by the plunger 4a, only the rotor 3 rotates. Of course, in the case of a steering lock device, unlocking means turning on the ignition switch, accessory switch, or starter switch. On the other hand, when unlocking without using a key, the switch S is turned on, the plunger 4a of the electromagnetic solenoid 4 is retracted, and the rotary cylinder 7 is made freely rotatable. Then, when the lever holding the knob 5 of the rotor 3 is rotated, the rotor 3 will rotate together with the rotary cylinder 7 relative to the rotor case since one end 8b of each tumbler 8 is fitted into the groove 7b. .

For the above-mentioned switch, from the viewpoint of preventing theft of the automobile, it is preferable to use, for example, a keyboard type switch, that is, a switch that is turned on only when the operation signal matches the stored signal.

If the present invention is applied to a steering lock device for an automobile as described above, the rotor can be rotated with or without a key, which is very convenient.

The present invention can also be suitably applied to trunks of other automobiles. Although the above embodiment uses an electromagnetic solenoid as the plunger drive device, the present invention is not limited to this. For example, an electric motor may be used, or mechanical means such as a wire may be used. good. In addition, the present invention can be applied not only to cylinder locks for automobiles but also to cylinder locks for house doors, etc. In such cases, the body 1
can also be omitted.

As described above in detail in the embodiments, the cylinder lock of the present invention that can be opened with a key or without a key has a rotary cylinder housed around the outer periphery of the rotor, and a conventional A tumbler engagement groove was formed on the inner surface of the rotor case, and
With a simple structure in which the plunger is inserted into each hole of the rotor case and the rotary cylinder, and its tip is made to protrude and retract from the rotary cylinder, unlocking with a key and without a key can be performed reliably. You can achieve your intended purpose.

[Brief explanation of drawings]

FIG. 1 is an axial sectional view of a main part of a cylinder lock according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line -- in FIG. 1. 1... Body, 1a... Hole, 2... Rotor case, 2a... Hole, 3... Rotor, 4... Electromagnetic solenoid, 4a... Plunger, 5... Knob, 7
...Rotating cylinder, 7a, 7b...Tumbler end protruding and retracting groove, 8...Tumbler, E...Power supply, S...Switch.

Claims (1)

[Scope of Claim for Utility Model Registration] A rotor having a rotary cylinder fitted on its outer periphery and a knob on the front is rotatably housed in a rotor case, and a plunger drive device is attached to the outer periphery of the rotor case, A groove is formed on the inner surface of the rotary cylinder, into which the end of each tumbler stored in the rotor fits when the key is removed, and escapes when the key is inserted. In this case, holes are formed into which the plungers of the plunger drive device are fitted, and when the plungers of the plunger drive device are fitted into the holes of the rotor case and the rotary cylinder, the rotary cylinder cannot rotate with respect to the rotor case. On the other hand, when the plunger is retracted and its tip part escapes from the hole in the rotary cylinder, the rotary cylinder becomes rotatable relative to the rotor case. .