JPS59830Y2 - paging device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device capable of individually calling people within a specified range.

2. Description of the Related Art Conventionally, there is a device called a pager that can call individual people in a building.

In this device, when a call is made, a pager carried by the person being called generates an audible ringing sound.

Therefore, it could not be used in places where silence was required.

The present invention aims to provide a calling device that eliminates such drawbacks, and will be described below along with an embodiment thereof.

In FIG. 1, A is a transmitting device that generates a signal for individual calling. B, C, and D are receiving devices that are carried in a pocket or the like.

Each receiving device has a receiving circuit 1 that receives a signal, and a determining circuit 2 that determines whether the received signal is its own calling signal or not.
, a low frequency generation circuit 3 that generates a low frequency signal if the result of this determination is that it is the own signal, and a low frequency vibrator 4 that is driven by this low frequency signal and does not generate any sound are provided. .

FIGS. 2 and 3 show the specific configuration of receiving device B. FIG.

5 and 6 are exterior cases made of magnetic material such as iron plates,
Both 5 and 6 are not fixed to each other by a spring 7, but are connected in a floating state, that is, in a loosely fitted state.

Reference numeral 8 denotes an electromagnet provided in one case 6, which constitutes a part of the low frequency vibrator 4 in FIG.

9 is a circuit section corresponding to circuits 1 to 3 in FIG.

When this device attempts to call a specific person, it creates a signal that corresponds to the receiving device that the person has, and emits that signal from the transmitting device A.

This radiated signal is received by each of the receiving devices BD, but an output is generated only from the discrimination circuit 2 in the corresponding device, and a Mr. I frequency signal is generated from the circuit 3.

As a result, the electromagnet 8 operates, and the outer case 5°6 vibrates in cooperation with the elastic force of the spring 7.

Therefore, the person in possession of the receiving device can sense the occurrence of vibration and thus know that there is a call.

Note that in the above embodiment, there are three receiving devices for one transmitting device A, but it is also possible to provide a larger number of receiving devices or one receiving device for one receiving device. good.

In addition, a low frequency generation circuit 3 is provided, but if the transmission signal is modulated with a low frequency, a detection circuit is provided in place of the circuit 3, and the detection output is amplified. It's okay.

As is clear from the above description, the calling device according to the present invention can detect the presence of a call by vibrations directly applied to the body of the person being called, so it does not generate noise and does not disturb others.

Another advantage is that you can make a call without being noticed by others.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a calling device according to an embodiment of the present invention, FIG. 2 is a perspective view of a receiving device, and FIG. 3 is a sectional view showing its internal structure. B, C, D... Receiving device, 5, 6...
Exterior case, 7... Spring, 8... Electromagnet.

Claims (1)

[Scope of utility model registration request] A means for receiving a calling signal, a low-frequency signal generation circuit that identifies the received signal and is driven by the identification signal, an electromagnet driven by the low-frequency signal, and an exterior case divided into two parts are loosely fitted. A calling device comprising a spring supported by the electromagnet, and causing the outer case to vibrate mechanically without making a sound due to the action of the electromagnet.