JPS63155934A - Hand set type telephone set - Google Patents

Abstract

PURPOSE:To easily design, fabricate and assemble by discriminating an on hook and an off hook by an OR circuit formed by connecting tenkey switches of one longitudinal or horizontal row of a handset type telephone set and a protrusion provided on a hand set mounting base. CONSTITUTION:At the time of mounting the handset on the mounting base 10, any one row of the internal tenkey of the handset is pressed by the protrusion 11 disposed on the mounting base 10 due to the dead weight of the handset to turn on the switch disposed on the tenkey. Namely, the switches corresponding to the horizontal one row of the tenkey are connected in parallel to take an OR20, thereby, the switches of any row of the tenkey are pressed to decide the on hook time. Thereby, a hook switch is reduced and a mechanical part is reduced to improve the reliability, produce a freedom in the design, simplify a structure and facilitate the assembling.

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a handset type telephone.

(Prior Art) As shown in FIGS. 4 and 5, conventional techniques are used to determine whether a handset (telephone) is on-hook or off-hook.
This was confirmed by turning the hook switch (ex limit switch, etc.) on the phone on and off.

(Problems to be Solved by the Invention) Conventional hook switches have problems in that because they are mechanical, they take up a certain amount of space relative to the telephone body and are troublesome to design, manufacture, and assemble.

(Means and actions for solving problems) On-footer,
The hook switch used to confirm off-hook status has been eliminated, and instead, a switch on the numeric keypad provided inside the handset is used to determine on-hook and off-hook status.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the appearance of the handset type telephone according to the present invention, and FIG. 2 is an explanatory diagram showing the on-hook state of the handset type telephone according to the present invention.

That is, when the handset is placed on the installation stand 10, the protrusion 1 provided on the installation stand 10 will be damaged due to the handset's own weight.
1, one of the numeric keys inside the handset is pressed and a switch provided on the numeric keypad is turned on.

FIG. 2 is an electrical block diagram for determining the on-footer state by a switch provided on the numeric keypad.

That is, by connecting the switches corresponding to one horizontal row of the numeric keypad in parallel and performing an OR, it is determined that the state in which a switch in any one row of the numeric keypad is pressed is an on-hook state. The purpose is to achieve the following functions.

(Effects of the Invention) According to the present invention, there is no need for a hook switch for checking on-hook or off-hook, so mechanical parts are reduced and reliability is improved. Furthermore, the number of hook switches is reduced and the degree of freedom is increased for the separate needles, making the structure simple, easy to assemble, and inexpensive.

[Brief explanation of the drawing]

FIG. 1 is an external view of the handset type telephone according to the present invention, FIG. 2 is an explanatory diagram showing the on-hook state of the handset type telephone according to the present invention, and FIG. 3 is an illustration of the handset type telephone according to the present invention. Fig. 4 is an external view of a conventional handset type telephone, Fig. 5 is an explanatory diagram of determining on-hook state using a conventional hook switch, and Fig. 6 is an electrical block diagram for determining on-hook or off-hook. The figure is an electrical block diagram of a conventional hook switch. 1...Handset 2...Numeric keypad-3...
・Hook switch 10...Installation stand 20...OR
circuit

Claims (1)

[Claims] A feature is that on-hook and off-hook can be determined by an OR circuit formed by connecting numeric keypad switches in at least one row in the vertical or horizontal direction of the handset type telephone and a protrusion provided on the handset installation base. A handset type telephone.