JPH01157651A - Hook switch for telephone set - Google Patents

Abstract

PURPOSE:To eliminate the need for the projection of a hook switch operating part on a telephone set case body by detecting information outputted from one or plural sensors of a pressure sensor group distributed on the telephone set case body, sending a control signal and opening and closing an electron contact by means of the control signal. CONSTITUTION:When a handset 1 is placed on a case body 2, sensors 31-m and 41-n sense the load of the handset 1, and information pieces a1-an and b1-bn are sent to a signal processing circuit 5. The signal processing circuit 5 processes such data, decides whether the handset 1 is placed on the case body 2 or not, sends a control signal (c), operates an electron contact 6, and makes an on-hook condition. To the contrary, when the handset 1 is lifted up from the case body 2, the sensors 31-3n and 41-4n stop outputs of the information pieces a1-an and b1-bn, the signal processing circuit 5 sends a control signal c', the electron contact 6 is operated, and an off-hook condition is made. Thus, the projection of the operating part of the hook switch can be made unnecessary.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a hook switch for a telephone, and more particularly to a hook switch for a telephone that is operated by placing a handset on the telephone.

[Prior Art] Conventionally, this type of hook switch has been provided with an operating portion protruding from the phone casing on the handset mounting portion of the phone.
When the handset is put down, the weight of the handset pushes down on the operating part, mechanically opening and closing the switch.

[Problems to be Solved by the Invention] The conventional hook switch described above has a structure in which the operating part protruding from the phone housing is pressed down by the weight of the handset to open and close the switch. When designing, it is necessary to ensure that the protruding operating part is pressed down, which has the disadvantage that the shape design of the telephone is greatly restricted.

[Means for Solving the Problems] The present invention has been made in order to solve the above-mentioned conventional problems, and as a means for solving the problems, a group of pressure sensors distributed on the handsera i/mounting surface of the telephone housing is provided. , a signal processing circuit that processes information output from one or more sensors in the sensor group and sends out a control signal, and an electronic contact that opens and closes according to the control signal from the signal processing circuit. The present invention provides a hook switch for telephones characterized by the following features.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a telephone hook switch according to an embodiment of the present invention.

The telephone hook switch includes sensors 31, 32, 33, . . . 2 m and 41, 42, 43, . ..., n, and sensors 31 and 32
, 33. ...1m and sensors 41, 42, 43.・・・
・Information a output from n 0. a2. a 3
．． ...', a n and s,, b2. b3・,bn
a signal processing circuit 5 that determines whether or not the handset 1 is placed on the housing 2 based on this and sends a control signal; and an electronic switch 6 that is activated by control signals c and c' sent from the signal processing circuit 5. It will be equipped with. Sensor 31 to m
and 41 to n quantitatively sense the load of the handset 1, and are arranged so that the load of the handset 1 can be sensed reliably. For example, the distance between the - group of sensors 31 to m and the first group of sensors 41 to n is determined by the handset 1.
The distribution area of each group of sensors 31 to m and 41 to n is set to be approximately equal to the interval between the transmitting and receiving parts of the handset 1.
Measures are taken, such as setting the area to be larger than the area of each transmitting/receiving unit.

Next, the operation of the telephone hook switch according to this embodiment will be explained.

When the handset 1 is placed on the housing 2, the sensors 31 to m and 41 to n sense the weight of the handset 1 and provide information al to a. and bl to s.

is sent to the signal processing circuit 5. The signal processing circuit 5 processes these data to determine whether the handset 1 is placed on the housing 2 or not, and sends a control signal C to the electronic contact 6.
Activate to enter the on-footer state.

Conversely, when the handset 1 is lifted from the top of the housing 2, the sensors 31 to 3n and 41 to 4n display information al to a. The signal processing circuit 5 outputs a control signal C' to activate the electronic contact 6 to set the off-hook state.

[Effects of the Invention] As explained above, the telephone hook switch of the present invention detects the pressure sensor group distributed on the telephone housing and the information output from one or more sensors of this sensor group. Since it has a structure that includes a signal processing circuit that sends out control signals and electronic contacts that open and close according to the control signals from this signal processing circuit, there is no need to protrude the operating part of the hook switch on the phone case, and as a result, the case This has the effect of increasing the degree of freedom in design.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a telephone hook switch according to an embodiment of the present invention. 1: Handset 2: Housing 31.32
, 33. ...m: Sensors 41, 42, 43. ...n: sensor

Claims (1)

[Claims] A group of pressure sensors distributed on the handset mounting surface of the phone housing, a signal processing circuit that processes information output from one or more sensors in these sensor groups and sends out a control signal, and the signal processing circuit. A hook switch for a telephone, characterized by comprising an electronic contact that opens and closes according to a control signal from a circuit.