JPS5838842Y2 - Operator identification lock - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an operator identification unit, and is mainly used as a power lock for a device such as a terminal device in which the operator is to be limited and identified.

A conventionally used operator identification section is shown in FIG. 1a.

As shown in b, since the identification lock main body 1a and the identification mechanisms 1C to 1e are separated, the identification part is large and the key is also long, and the bending, warping, and twisting of the key may cause the key to rotate, be rubbed when inserted or removed, or be caught. The operation was unstable.

In addition, it was necessary to adjust the position of the electrical contacts of the switch, making assembly and adjustment difficult.

An object of the present invention is to provide a small, reliable, and inexpensive operator identification unit by providing a light emitting element in the lock body to identify the presence or absence of a key notch.

According to the present invention, when a plurality of keys are inserted into one lock and rotated, the presence or absence of the notch in the identification part of the key allows light to pass through from the light emitting element provided in the lock body. By closing, an operator identification section is obtained that can identify each key based on the presence or absence of an output voltage of the light receiving element provided in pair with the light emitting element.

Embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 2 is a perspective view of an operator identification section showing an embodiment of the present invention, and the identification section 5 is connected to four keys 3a, 3b, 3C shown in FIG.
, 3d, of which the key 3a is used.

In the identification part 5, a cylinder 50 is provided in the cylinder lock body 5a, and the cylinder 50 is further provided with light emitting elements 5e, 5e', 5e'' on the upper part thereof.

This identification section 5 is shown in an exploded perspective view in FIG.

A tumbler 5b is rotatably provided inside the cylinder lock body 5a.

The tumbler 5b is rotated clockwise and the rotation angle is 90°.

The tumbler 5b has a pin hole 5g that engages a pin for permitting or prohibiting the rotation of the tumbler 5b within the cylinder lock body 5a depending on the shape of the key thread of the key, and a pin hole 5g that engages with a pin that allows the tumbler to emit light even when the tumbler is rotated by 90 degrees. Cutouts 5d to 5d'' are provided so as not to block the luminous flux of the element.

FIG. 5a is a sectional view showing a state in which the key is not inserted into the lock. In the figure, a light emitting element 5e and a light receiving element 5f are attached to a cylinder 50, and the pixel element is electrically connected through a hole 5h.

In FIG. 3, keys 3a to 3d are keys used to open the lock, and four types of keys are shown as an example.

The key threads that control opening and closing of the lock are all the same and have the desired notch, and in order to identify the key, a notch is provided at the bottom of each key, and the position of the notch is changed to make each key unique. The difference is that

FIG. 5 shows a sectional view when the key 3d is inserted and the tumbler is rotated 90'.

In the figure, since the identifying part of the key 3d closes the through hole 5h of the light flux of the light emitting element of the cylinder, the output voltage of the light receiving element becomes zero.

FIG. 5C similarly shows a cross-sectional view when the key 3a is inserted and the tumbler 5b is rotated 90 degrees.

In the figure, since there is a notch 3a' in the identification part of the key 3a, the luminous flux of the light emitting element reaches the light receiving element, and the light receiving element exhibits a certain output voltage.

In the embodiment of the invention, the key notch 3a'.

Light emitting elements 5e, 5e', corresponding to 3b', 3C'
Since the light receiving elements 5f, 5f', 5f" are provided, the light receiving elements 5f, 5f', 5
The key can be directly identified by the presence or absence of the output voltage of f".

light emitting elements 5e, 5e', 5e'' and light receiving element 5f.

5f' and 5f'' are integrated into the cylinder 5C, so there is no misalignment or adjustment with respect to the notch of the key, allowing for compact and highly reliable identification.

In this example, the light-emitting element and the light-receiving element are arranged so that the key can be identified when the key is rotated to the unlock position, but the light-emitting element and the light-receiving element can be attached by changing their positions.
It is possible to identify the key at any rotation angle of the key rotated for unlocking.

By using one light emitting element and attaching as many light receiving elements as necessary for identification, it is possible to provide an inexpensive identification section.

FIG. 6 is a circuit diagram using a light emitting element and a light receiving element, in which light from the light emitting element 6a is received by the light receiving element and its output signal is supplied to an amplifier.

As explained above, the present invention allows keys to be identified by using the light-receiving element in the light-emitting element provided in the key notch and the lock, and since the light-emitting element and the light-receiving element are integrated with the lock body, it is compact and high-performance. Reliability can be easily identified.

[Brief explanation of drawings]

Figure 1 a, l) A diagram showing a conventionally used operator identification part, Figure 2 is a perspective view showing one embodiment of the identification lock of the present invention, and Figure 3 is a key used in the lock of Figure 2. side view, Figure 4 is the second
Main exploded perspective view of the lock in the figure, Figures 5 a-c are line A in Figure 2.
FIG. 6 is a diagram illustrating a cross section taken along line A, showing different states, and FIG. 6 is a diagram illustrating a typical circuit of a light-emitting element and a light-receiving element. 5... Operator identification part, 5a... Cylinder lock body, 5b... Tumbler-15C...
...Cylinder, 5d...Notch, 5e~5
e''...Light emitting element, 5f~5f''...
Light receiving element, 5g...Pin hole, 5h...
Hole.

Claims (1)

[Scope of utility model registration request] A plurality of keys each having a key ridge portion for unlocking on one side and an identification portion provided on a portion facing the key ridge portion on the other side, and corresponding to the identification portion of the key inserted and operated for unlocking. a lock main body having a detection mechanism that detects the detection from a light emitting element and a light receiving element disposed at a position, and a detection signal from the detection mechanism when the lock is opened, and an identification part of the key used for unlocking the lock. An operator identification unit characterized by obtaining information.