JPH0358425B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a variable code lock, and particularly to a dial padlock in which the code combination can be easily changed.

[Conventional technology]

Conventionally, combination code locks have been considered relatively safe because they have a very large number of combinations of codes. However, once the code combination is known, the lock loses its safety and is no longer usable. Therefore, variable code locks have been proposed that can be used like new locks by arbitrarily changing the combination of codes as needed. For example, utility model registration No.
There is a code lock numbered 829576.

However, with these conventional code locks, it is necessary to widen the spacing between the dial rings when changing the code, which causes the dial to wobble and become unstable, making it difficult to operate and also making it difficult to use pins or small screwdrivers. It was troublesome as it required detailed operations using tools.

[Problem to be solved]

A variable code lock that allows you to change code combinations easily and safely with just your fingertips, without using any tools, and then easily return it to the state of use. It is an object of the present invention to provide a code lock that has a dial ring that does not rattle, has moderation in rotation, and can be used reliably and easily even in insufficient illuminance. .

[Means for solving problems]

The object of the present invention as described above is that the dial ring, which is rotatable with respect to the case, is locked by engaging with the notch of the long leg of the U-shaped shaft. In the code lock that is released from engagement with the notch when the rotation angle is reached, the code ring is released from engagement with the shackle when the dial ring is rotated at a predetermined rotation angle; and a code ring that can be fitted to and removed from the code ring at a plurality of angular positions, and a case plate that prevents axial movement of the code ring is fixed to the case to prevent axial movement of the code ring. a case cover movable by a predetermined amount with respect to the case; a locking shaft formed in the case is provided with a locking groove; A change plate is provided to prevent the case cover from moving when the case cover is prevented from being removed, and the long legs are positioned on the opposite side of the locking groove when the lock is locked, allowing the case cover to move in the removal direction. A lock release notch is provided.

Hereinafter, an example of the code lock according to the present invention will be explained based on the drawings.

1 is a case in which a flange 1a is formed at the upper end and a locking shaft 1c is formed at the lower end;
3 is a code ring with numbers etched on its outer surface, and 3 is a code ring that is inserted into and engaged with the code ring 2 from above. The code ring 2 and the code ring 3 constitute a dial ring D that rotates together.

Three dial rings D are stacked and rotatably fitted loosely into the case 1, and are stopped by a case plate 4 fitted to a locking shaft 1c so as not to come off.

A case cover 5 is fitted onto the locking shaft 1c, and its outer circumferential annular portion 5a has the function of restraining the code ring 2 from moving up and down from below. 6 is the case cover plate, 7
is a change plate for locking the case cover 5 to the locking shaft 1c, and the locking shaft 1c is inserted into the notch hole 7a provided in the change plate 7.
is inserted through the notch hole 7a, and the spring 8 biasing the change plate 7 in the right direction
The left edge of the locking groove 1 provided in the locking shaft 1c
d, thereby locking the case cover 5.

Reference numeral 9 has a U-shaped shackle, the short leg end 9a of which is inserted into a hole 1b provided in the flange 1a when the lock is locked, and the long leg thereof has a notch 9b for engaging with the cord ring 3. However, a notch 9b for engaging with the cord ring 3 is provided corresponding to each cord ring 3, and a lock release notch 9 is provided at the tip of the long leg base 9c.
d is provided.

When the shaft 9 is in the locked state, the distal end 7b of the change plate 7 is stuck to the base 9c of the shaft, so the engagement of the change plate 7 with the locking shaft 1c cannot be released, but in the unlocked state Pull out the shell 9 as
When it is further rotated by 180 degrees, the notch 9d faces the change plate tip 7b, so the change plate 7 is unlocked and the change plate 7 can be moved to the left.

Further, the inner surface of the code ring 3 is provided with recesses 3a corresponding to the number of codes on the code ring 2, and the hole 1e provided in the case 1 is provided with a pin 10 and a pin 10 extending outward. A spring 11 is attached that biases it toward the base. The pin 10 presses each cord ring 3 from inside,
As the dial ring D rotates, it is sequentially seated in the concave portion 3a of the cord ring, giving a sense of moderation and suppressing wobbling of the cord ring 3.

The code lock of the present invention constructed in this manner is almost the same as the conventional known code lock in terms of operation during normal use. When dial ring D is rotated and the engraved numbers etc. are aligned with the marks as a predetermined combination, ring D rotates with good control and stops in the correct position, so the dial can be used like a conventional lock. The ring does not shift and get caught in the shackle, and the shackle can be pulled out smoothly even if handled a little roughly.

In addition, when attempting to change a previously set combination of codes, first unlock the lock, pull out the shackle 9, and rotate it 180°.The base 9c of the shackle moves upward and the notch 9d opens onto the change plate. Turn to 7. At this time, since the change plate tip 7b is unlocked, the change plate claw 7c appearing in the window 5b on the lower surface of the case cover 5 can be moved to the left with a finger or the like. When the change plate 7 moves to the left, the edge of the notch hole 7a comes off the locking groove 1d, so the case cover 5 moves downward while being inserted into the locking shaft 1c. A washer 12 is provided at the tip of the locking shaft 1c, and the distance between the upper surface of the washer 12 and the lower surface of the opposing case cover 5 is sufficient for the code ring 2 to separate from the engagement with the code ring 3. The length is approximately half the height of the code ring 2. Therefore, case cover 5
When the code ring 2 moves downward, the code ring 2 whose movement was suppressed by the upper edge 5a of the case cover moves downward one after another, but the code ring 3 is supported by the case plate 4 and is also held by the pin 10. Therefore, since it is pressed from the inside and remains fixed without rotating or moving, the code ring 2 released from the engagement with the code ring 3 can be rotated to any position.

Here, after setting the numbers on the outer surface of the code ring 2 to a new combination, the code ring 2 is sequentially engaged with the code ring 3, and when the case cover 5 is pushed up toward the dial ring D, the change plate 7 is moved by the spring 8. The force automatically engages the locking groove 1d of the locking shaft 1c. After the code combination has been changed in this way, normal use can be started immediately.

〔Effect of the invention〕

As explained in detail above, the variable code lock of the present invention has a code ring movement restraining means equipped with a locking means that can be operated with only a fingertip, and also has a pin that presses the code ring from inside. Since the code rings can be engaged and disengaged very easily, it is easy to change the code combination and return to the original assembled state. Further, since the locking means of the case cover is unlocked only when the case cover is unlocked, changing the code combination cannot be performed except when the lock is unlocked, thereby ensuring safety.

Furthermore, the dial ring rotates with moderation, and code matching is easy, comfortable, and accurate, so it can be said that the lock is easy for anyone to use, regardless of age.

[Brief explanation of drawings]

FIG. 1 shows an example of the variable code lock according to the present invention, in which a is a vertical cross-sectional view, b is a cross-sectional view of the dial ring portion, and c is a cross-sectional view of the upper surface of the case cover. It is a view seen from above. 1... Case, 2... Code ring, 3... Code ring, D... Dial ring, 5... Case cover, 7... Change plate, 8... Spring, 9... Shackle, 10... Pin, 11...
…spring.

Claims (1)

[Claims] 1. A U-shaped shackle having long legs and short legs that is inserted into the case, and a plurality of dial rings that are rotatably fitted onto the outer peripheral surface of the case and engage with notches formed in the long legs. A dial type code lock, wherein the plurality of dial rings are disengaged from the cutout portions at a predetermined angle, and the U-shaped shackle is movable by a predetermined amount,
A dial ring is constituted by a code ring that engages with the notch and is disengaged at a predetermined angle, and a code ring that can be inserted into and removed from the code ring at a plurality of angular positions, A case plate that prevents directional movement is fixed to the case, a case cover that prevents axial movement of the code ring is provided so as to be movable by a predetermined amount with respect to the case, and is engaged with a locking shaft formed on the case. A locking groove is provided, and a change plate is provided in the locking groove so as to be removable and prevents the movement of the case cover when the case cover comes into contact with the long leg and is prevented from leaving, and when the long leg is locked, a change plate is provided. A variable code lock, characterized in that a lock release notch is provided at a position opposite to the locking groove in which the case cover can be moved in the removal direction.