JPS5820356B2 - cylinder lock - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a cylinder lock, and in particular to a cylinder lock suitable for the door of a room used by an unspecified number of people, such as the entrance to each room in a hotel. To provide a new cylinder lock that can easily have different keys in the same cylinder lock.

Hotel rooms are used by different users almost every day, and the storage of the entrance door key is largely left up to the user, but if the key is lost accidentally or a malicious user duplicates the key. Considering this, one inconvenience with conventional cylinder locks is that the entire lock must be replaced with a new one.

This invention does not require the lock to be replaced in the above-mentioned cases, and it is possible to easily configure different keys using the same cylinder lock.

A more detailed explanation will be given below with reference to the drawings.

Figures 1 to 8 all show cross-sectional views of the cylinder at the part that has the key difference function, and an inner cylinder 3 having a keyway 2 is rotatably provided inside the outer cylinder 1. It is being

The outer cylinder 1 is provided with a plurality of pin rows aligned in the axial direction at radial positions A, C, C, II, and E, with the pin positions of the rows aligned in the circumferential direction.

The drawing shows one set of pins that has a different key function among the multiple sets of pins aligned in the circumferential direction, each with a different pin configuration, and the A position is for locking/unlocking. The normal key insertion/removal position and the remaining opening or water position are the different key selection positions.

Reference numeral 4 denotes a pin that remains in the inner cylinder 3 at all times, and is provided at a position that can be aligned with radial positions A to H, each having a different pin configuration among the plurality of pin groups aligned in the circumferential direction. There is.

Reference numeral 5 designates a replacement key that allows the end of this pin 4 to match the shear line, and when the replacement key 5 is inserted into the keyway 2, the second
The state shown in the figure is reached, and the inner cylinder 3 becomes rotatable.

FIGS. 3 to 5 show the operation state when selecting the pin in position C as the locking/unlocking pin. First, insert the recombination key 5 and rotate the inner cylinder 3 to position C. (3rd
figure).

At this position, pull out the replacement key 5 and insert the key 6a, which has a slightly lower peak height and a different share line from the replacement key 5 (Fig. 4), to ensure the insertion/removal position during normal use. When the pin is rotated back at j and removed, the selection and designation of the pin at position C is completed (Fig. 5).

That is, in this state, locking/unlocking is possible only by using the key 6a.

Next, the case of converting the locking/unlocking configuration pin into two positions will be explained with reference to FIGS. 6 to 8.

In the structure of this example, prior to conversion, the inner cylinder 3 is first returned to position C using the key 6a, the recombination key 5 is inserted to return it to the old state, and then the recombination key 5 is used to return the inner cylinder 3 to the C position.
It is necessary to rotate it to two positions.

Rotate it to the 2nd position (Fig. 6), remove the rearrangement key 5,
In addition, when inserting the key 6b, which has a lower peak height and has a different share line from the recombinant key 5 and the other positions (Fig. 7), it returns to the insertion/removal position A during normal use. Rotate and remove.

Once removed, the conversion specification for the pin in the second position is completed (
Figure 8).

Conversion to other positions 口 and HO may be performed in the same manner.

The illustrated portion having the key difference function is in a plurality of pin groups aligned in the circumferential direction in a plurality of pin rows.

For example, at least one set of pins located at the rearmost position of the cylinder may be used. 6a, r6b, etc., all have the same pin with the same shear line [Also, the peaks and valleys of the key may also have the same shape.

The above example describes the case where the inner cylinder 3 is rotated, but
For example, the rear end of the outer cylinder 1 is made independently rotatable, and a single row of pins aligned in the axial direction is provided across the movable part and the fixed part to provide a normal key insertion/removal position, In the movable part, multiple sets of pins having different pin configurations are aligned in the circumferential direction and provided radially to provide a different key selection position,
A pin is provided in the inner cylinder at a position that can be aligned with the different radial positions of this pin configuration, and the pin remains in the inner cylinder at all times in the same way as described above.
By aligning the end of this pin with the shear line using a recombination key, the desired locking/unlocking configuration pin can be selected simply by rotating the movable part of this outer cylinder. For the conversion operation, simply insert the replacement key and rotate the movable part of the outer cylinder, and as in the example above, use the corresponding key to rotate the inner cylinder to its original position and insert the replacement key. This eliminates the trouble of having to restore the old state.

As is clear from the explanation based on the above embodiments, this invention enables different keys to be configured in the lock itself without the need to replace an already used cylinder lock with a new one. We were able to provide a cylinder lock that is ideal for use on doors of rooms that are used by an unspecified number of people.

[Brief explanation of drawings]

Each of the drawings is a cross-sectional view showing an embodiment of the cylinder lock according to the present invention, and FIG. 1 shows the state before the pin group is specified, and FIGS. 2 to 5 show the pin group in the C position. FIGS. 6 to 8 show operating states when converting the pin group designation at two positions. 1... Outer cylinder, 2... Keyway, 3...
... Inner cylinder, 4 ... Pin, 5 ... Recombination key, 6a, 6b ... Key.

Claims (1)

[Claims] 1. By inserting a key, the inner and outer cylinders can be connected to the shear line. In a cylinder lock that allows the inner cylinder to rotate by aligning the boundaries between the pins, multiple rows of pins are aligned in the axial direction, and the pin positions are aligned in the circumferential direction to adjust the radial position of the outer cylinder. The - is the normal key insertion/removal position during locking/unlocking operations, and the remaining parts are the different key selection positions. and at least one set of pin groups among the plurality of sets of pin groups aligned in the circumferential direction have different pin configurations between radial positions, while the inner tube tail is aligned with the different radial positions of the pin configurations. A pin is provided that remains in the inner cylinder at all times at possible positions, and the inner cylinder can be rotated to the desired different key selection position using a recombination key that aligns the end of this pin with the shear line, allowing recombination at each selected position. A cylinder lock characterized in that the key is removed and a duplicate key that matches the pin configuration at the selected position is used as the locking/unlocking key. 2. In a cylinder lock in which the inner cylinder can be rotated by aligning the shear line of the inner and outer cylinders with the boundary between the pins by inserting a key, a part of the outer cylinder can be rotated independently, and this A single row of pins aligned in the axial direction across the parts is used as the normal key insertion/removal position during locking/unlocking operations, and in the movable part, the pin positions are aligned in the circumferential direction and placed in radial positions. ,
Multiple sets of pins with different pin configurations are provided to provide different key selection positions, while the inner cylinder has pins that remain in the inner cylinder at all times at positions that can be aligned with the radial positions of the different pin configurations. By inserting a recombination key that matches the pin end with the shear line, the movable part of the outer cylinder can be rotated, and at each selected position, the recombination key is removed and a duplicate key matching the pin configuration of the selected pin position is inserted. A cylinder lock characterized by using the key as a locking/unlocking key.