JPS6137158Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a cylinder lock used as a car engine key, etc. More specifically, the invention is a cylinder lock that is used as a car engine key, etc. More specifically, each time the key body is inserted and pushed in step by step, the energizing circuits to various devices are closed in sequence. It concerns cylinder locks.

The purpose of this invention is to close each contact point of an electric circuit in sequence by simply inserting and pushing the key body, and to ensure that necessary equipment is energized with a simple operation. The purpose is to provide a cylinder lock that is extremely useful as an engine key.

Next, the details of an embodiment of the present invention will be explained based on the accompanying drawings as follows.

In the figure, 1 is an outer cylinder with an open front end;
A small-diameter screw cylindrical portion 2 formed on the outer periphery of the front end is fitted into, for example, a front panel 3 of an automobile, and is fixed to the panel 3 by a lock nut 4 screwed into the screw cylindrical portion 2. A key 5 is provided on the inner circumferential surface of the key 1 in a protruding manner along the axial direction and ends halfway toward the rear from the front end.

Reference numeral 6 denotes an inner cylinder fitted into the outer cylinder 1, and a key groove 7 through which the key 5 penetrates inward is formed in a part of the peripheral wall. 1 can be slid only in the axial direction. The rear end portion of the inner cylinder 6 is formed to have a smaller diameter, and a current-carrying member 9 made of a copper plate is attached to the outer periphery of the smaller diameter portion via an insulating ring 8 made of Bakelite or the like. The outer periphery of this current-carrying member 9 is also connected to the insulating ring 1 with an appropriate length left at the rear end.
Cover with 0. Therefore, the current-carrying member 9 is electrically insulated from the inner cylinder 6 and the outer cylinder 1.

The inside of the rear end of the outer cylinder 1 is formed to have a larger diameter so that the insulating ring 10 is slidably fitted thereinto, and when the inner cylinder 6 is at the most advanced position, the insulating ring is attached to the front end wall of the large diameter part 11. The ends of the inner cylinder 6 come into contact with each other to prevent the inner cylinder 6 from coming off, and the front end of the inner cylinder 6 slightly protrudes from the front end opening of the outer cylinder 1.

Furthermore, within the large diameter portion 11 of the outer cylinder 1, a bullet 12 is provided which gives elasticity to the inner cylinder 6 to always return to the forward position. is provided with small holes 13 in the radial direction that communicate with each other when the inner cylinder 6 is in the most forward position.
A permanent magnet 14 is installed inside the small hole 13 so as to be movable in the axial direction of the small hole 13, so as to be positioned so as to span the outer cylinder 1 and the inner cylinder 6 in a natural state and to prevent the inner cylinder 6 from moving in the axial direction.

Reference numeral 15 denotes a key body which is inserted into and out of the inner cylinder 6 from the opening at the front end thereof, and the cylinder portion 16 thereof has a diameter and a length to fit appropriately into the inner circumferential hole of the inner cylinder 6. The cylinder part 16 is provided with a key groove 17 along the axial direction that fits and slides on the key 5 protruding into the inner cylinder 6. A permanent magnet 18 is embedded in a position corresponding to the hole 13. When the key body 15 is inserted to a predetermined depth, the permanent magnet 18 of the key body 15 and the permanent magnet 14 interposed between the outer cylinder 1 and the inner cylinder 6 generate an attractive magnetic force or a repulsive magnetic force of both permanent magnets 14 and 18. The permanent magnet 14 is moved by this, and its polar direction is determined and assembled so that the outer cylinder 1 and the inner cylinder 6 are unlatched.

Further, a recessed groove 19 is formed in the cylinder portion 16 of the key body 15 along the longitudinal direction of the key groove 17, and a locking member 20 is installed in this recessed groove 19, and the key 5 protrudes into the inner cylinder 6. A plurality of (four in the illustrated case) hanging step portions 21 in the width direction are formed at appropriate intervals on the longitudinal end face of the plate.

The hanging member 20 is formed by bending an elastic metal band plate, and has a folded piece 23 into the groove 19 at the rear end of a base rod 22 that fits along the groove 19.
The base rod 22 is provided with elasticity to protrude from the groove 19, and the front end of the base rod 22 is bent in an arc shape at the front end of the key body 15 to form the operation piece 24. An engaging piece 25 that engages with the engaging stepped portion 21 in the direction of preventing the key body 15 from coming off in the middle of the surface corresponding to the key 5
is installed protrudingly.

Therefore, with respect to the inner cylinder 6 at the most forward position,
When the end of the cylinder part 16 is inserted to a predetermined depth in contact with the end surface of the inner circumferential hole, the engaging piece 25 of the engaging member 20
As shown in FIG. 1, the key body 15 is engaged with the locking step 21a located closest to the front end to prevent the key body 15 from being removed. From this state, when the key body 15 is pushed in, the inner cylinder 6 also moves together. However, the inner cylinder 6 can be stopped in stages corresponding to the number of pitches of the locking steps 21. Furthermore, by pressing the operating piece 24 with a fingertip in the opposite direction to the key 5, the latch member 20 disengages the latch piece 25 from the latch step 21, allowing the inner cylinder 6 to return to its most advanced position. And the key body 15 can be extracted.

Furthermore, in the large diameter portion 11 of the outer cylinder 1, a plurality of sets of contacts for opening and closing current-carrying circuits to various devices are sequentially connected via the current-carrying member 9 each time the inner cylinder 6 is pushed in stepwise. Deploy it like this.

In the illustrated case, the inner cylinder 6 has hanging steps 21b to 21d.
It is designed so that it can be pushed in in three stages, and accordingly three sets of contacts are provided. The contact 26 on the power supply side is
It is used in combination from the first stage of pushing of the inner cylinder 6 to the third stage of pushing, and is provided so as to be always in contact with the current-carrying member 9 even during each stage of pushing. Further, the contacts on the output side are a first contact 27a that contacts the current-carrying member 9 during the first stage of pushing the inner cylinder 6, and a second contact 27b that also contacts the current-carrying member 9 during the second stage of pushing.
and a third contact 27c that also comes into contact during the third stage of pushing.

The first contact point 27a is used for flashers, radios, lights, tail lights, wipers, etc. in automobiles.
Configures circuits such as horns. Second contact 27b
constitutes a circuit for an ignition coil, cooler, dynamo, etc., and the third contact 27c constitutes a circuit for a starter motor, and each circuit incorporates an on/off switch for each device. It is something to keep.

The present invention has a structure as described above, and when the key body 15 is removed, the inner cylinder 6 is in the most advanced position, the magnet 14 makes it impossible to push the inner cylinder 6, and the contacts 26, 27a, 27b, 27c is open.

When the key body 15 is inserted into the inner cylinder 6 from this state, the engaging piece 25 engages with the frontmost engaging stepped part 21a to prevent the key body 15 from coming out, and at the same time, the permanent magnet 18 of the cylinder part 16 acts. The permanent magnet 14 between the inner cylinder 6 and the outer cylinder 1 is moved to open the inner cylinder 6 and the outer cylinder 1.

When the inner cylinder 6 is pushed in through the key body 15 from the above state shown in FIG. is electrically conductive through the current-carrying member 9, making it possible to energize the predetermined equipment. When the inner cylinder 6 is further pushed in, the locking step portion 21 and the engaging piece 25 advance to the second and third stages, and at each pushing position, each contact becomes conductive, and the third stage of pushing occurs. All contacts become conductive.

In addition, to open the energizing circuit, press the operating piece 24 of the latch member 20 on the key body 15 with your fingertip,
The key body 15 can be removed by releasing the locking piece 25 from the locking step, and the inner cylinder 6 returns to the most advanced position by the restoring elasticity of the collapsing bullet 12, opening each contact point and , the permanent magnet 14 is returned to be located over both the outer cylinder 1 and the inner cylinder 6, and the inner cylinder 6 is maintained in a state where it cannot be pushed.

As described above, the present invention provides the inner cylinder, which is fitted to be movable in the axial direction inside the outer cylinder through the key and the keyway, with constant return elasticity toward the front end opening side. The key body that is inserted into the key and pressed in has a magnet for opening the magnet that engages the movement of the inner cylinder, and a locking mechanism that holds the pushed-in position of the inner cylinder by engaging with a latching step provided on the key. The outer cylinder is equipped with multiple sets of contacts that conduct through the current-carrying member provided on the inner cylinder each time the inner cylinder moves step by step.
It is not only possible to energize each device without using the key, but it is also extremely easy to operate, as it is possible to energize the necessary devices step by step just by inserting and pushing the key. It is useful for use in automobile engine keys, etc., which require stepwise energization.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional front view showing the state in which the key body of the cylinder lock according to the present invention is inserted, Fig. 2 is a sectional view taken along the arrow - in Fig. 1, and Fig. 3 is a sectional view taken along the arrow - in Fig. 1. FIG. 1 is an outer cylinder, 5 is a key, 6 is an inner cylinder, 7 is a keyway,
9 is a current-carrying member, 12 is a bullet, 14 and 18 are permanent magnets, 15 is a key body, 16 is a cylinder portion, 17 is a keyway, 20 is a latching member, 21 is a latching step portion, 24 is an operating piece, 25 is a hooking piece, 26 is a contact, 27a, 2
7b and 27c are contacts.

Claims (1)

[Scope of utility model registration request] The inner cylinder is fitted into the outer cylinder in a manner that prevents it from coming out so that it can slide freely by fitting a key provided on the inner periphery of the outer cylinder with a key groove formed in the inner cylinder, and the inner cylinder is fitted inside the outer cylinder. A bullet that constantly presses the outer cylinder toward the open end of the outer cylinder is installed, and the inner cylinder is placed at the fitting portion of the outer cylinder and the inner cylinder with the inner cylinder located closest to the opening side end. A separate key body is prepared which is inserted into the inner cylinder so that it can be freely inserted and removed from the end opening, and a magnet is interposed to prevent the key from being inserted into the inner cylinder. The magnet is embedded so that the magnet between the outer cylinder and the inner cylinder is in the open position when inserted into the fixed position, and when the inner cylinder is pressed inward, it engages with the stepped part parallel to the key on the outer cylinder and pushes the inner cylinder. A plurality of pairs are attached to each other in a stepwise manner and are connected to each other through a current-carrying member attached to the inner cylinder so as to be electrically insulated each time the inner cylinder is advanced into the outer cylinder in stages. A cylinder lock characterized by having a contact point.