JPS584292Y2 - hook switch for telephone - Google Patents

Description

[Detailed description of the invention] The present invention is a hook switch used in a telephone set, in particular, a hook switch that is designed to maintain the incoming state even when the telephone body is removed for maintenance and inspection. This invention relates to a hook switch for a telephone that automatically enters a normal incoming call state when the handset is placed on the telephone.

The conventional structure of this type of hook switch is that a holding plate called a hook frame is provided inside the telephone body, and a hook lever is rotatably attached to the hook frame, and an external handset is connected to the telephone. When placed on a hook button that partially protrudes from the body, the weight of the transmitter and receiver is used to rotate the hook lever by a fixed amount through the hook button, thereby connecting the contact strips attached to the hook frame. The contact with the hook lever is released to open the contact and enter the incoming call state.

In such telephone hookswitches, productivity,
In order to improve economic efficiency, the hook frame is often attached to the bottom plate side of the phone case, but when the phone case is removed for inspection or maintenance, etc. In this case, the suppressing action of the hook lever by the hook button is released, the hook lever is restored by the force of the spring, and the contact strip is brought into contact, the circuit is closed and the call state is established. A serious drawback is that even if a person makes a call, the call cannot be received.

The present invention eliminates the above-mentioned conventional drawbacks, and when the telephone cover is removed for inspection etc., it can be held in the incoming state without pressing the hook lever by hand. An object of the present invention is to provide a hook switch for a telephone that can automatically put the receiver into a normal incoming state simply by placing the handset on the hook button.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a side sectional view of the hook switch of the telephone when the handset (not shown) is removed and the phone is in a talking state, and FIG. 2 is a rear side sectional view taken along the line 1--2 in FIG.

The hook frame 1 is vertically attached to the telephone bottom plate 8.

The upper part of the hook frame is formed with a V-shaped receiving part 2 which is partially bent into a "<" shape.

3 and 4 are inclined surfaces of the receiving portion 2. The hook lever 5 has an L-shape as a whole, and the tip 6 of one arm is held in the receiving part 2 of the hook frame 1, and the middle or upper part of the arm and the base of the hook frame 1 are connected to each other. A tension spring 15 is installed between the hook lever 5 and the hook lever 5.
A rotating force is applied in the clockwise direction in the figure.

The tip 13 of the other arm of the hook lever 5 is connected to the handset 20 (
It is in contact with the lower end of the hook button 12 on which the hook button 12 (FIG. 4) is placed.

As shown in FIG. 3, a hole 9 is formed in the receiving part 2 of the hook frame 1 in order to prevent the hook lever rotatably held on the hook frame 1 from coming off or to position it. As shown, a protrusion 10 formed at the tip 6 of the one arm of the hook lever 5 is inserted.

Note that the hook button 12 is supported by the telephone body 11.

A contact strip group 19 is attached to the base of the hook frame 1.

The contact strip group 19 extends upward from the base of the hook frame 1, and a contact point 21 is formed at its tip.

When the contact strip group 19 is placed on the hook button 12 with the handset 20 (FIG. 4), the contact 21 at the tip thereof is open, thereby incoming a call. When removed from the tension spring 15
When the hook lever 5 is rotated by a certain amount, the contact 21 at the tip of the contact strip group 19 is pressed by the hook lever.
is set so that it is closed as shown in FIG. 1, thereby entering a talking state.

A substantially U-shaped locking lever 1T is pivotally attached to the hook frame 1.

This locking lever 17 is pivotally attached to the hook frame 1 at one end of its U-shaped portion, so that the locking lever 17 can pivot so as to sandwich the side end of the hook frame 1 with its U-shaped portion. It becomes.

When the locking lever 17 is operated and the other end of the U-shaped portion is inserted between the hook lever 5 and the hook frame 1, the hook lever 5 resists the force of the tension spring 15 and moves to the first position.
It rotates counterclockwise in the figure and comes out of contact with the contact strip group 19, thereby opening the contact 21 and restricting the rotation of the hook lever 5 in the clockwise direction (FIG. 1).

FIG. 4 shows the state at this time (1). In such a configuration, when removing the telephone housing 11, for example, when maintaining or inspecting the telephone or the telephone line, rotate the hook lever 5 counterclockwise in FIG. 1 or FIG. 17 and insert it between the hook frame 1 and the hook lever 5 (see FIGS. 3 and 4).

As a result, the hook lever 5 is locked to the locking lever with a distance from the hook frame 1 equal to the thickness 18 of the locking lever 17, and the contact with the contact strip group 19 is removed, and the contact point 21 will be held.

Set the phone to receive calls at this time. Next, after completing the inspection of the phone, leave the phone body 1 in this condition.
1 is assembled and the handset is placed on the hook button, the hook button 12 is lowered by the gravity of the handset, and the hook lever 5 in contact with the hook button 12 is thereby moved to the receiving part of the hook frame 1. 2 as a fulcrum, in the counterclockwise direction in FIG. 4, and the gap between the hook lever 5 and the hook frame 1 widens, so that the locking lever 1T is released from between the hook lever and the hook frame under its own weight. As a result, the engagement between the locking lever 11 and the hook lever 5 is released.

At this time, the hook lever 5 does not come into contact with the contact strip group 19, and the contacts are open to receive a call.

In this way, the hook switch according to the present invention can be easily held and maintained in the receiving state during inspection, and after assembly, the hook switch can be maintained in the normal receiving state with the handset placed on the hook button. Because of this structure, it exhibits great practical effects compared to conventional hook switches.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of the hook switch of the telephone when it is in the talking state, Figure 2 is a rear side sectional view taken along line nn in Figure 1, and Figure 3 is the engaged state of the locking lever. FIG. 4 is a side sectional view of the hook switch of the telephone when it is held in the incoming state during maintenance or inspection. 1... Hook frame, 2... Receiving part,
5...Hook lever, 8...Telephone bottom plate, 11...Telephone body, 12...
・Hook button, 15...Tension spring, 17・
...Locking lever 19...Contact bullet group,
20...Transmitter/receiver, 21...Contact.

Claims (1)

[Scope of utility model registration request] a hook lever that transmits the movement of a hook button on which a tube feeder is placed to the opening/closing operation of the contacts of a contact strip group; a hook frame that rotatably holds the hook lever; and a hook lever that is pivotally connected to the hook frame. and a locking lever, and when the telephone body is disassembled, the hook lever and the locking lever are engaged to open the contacts of the contact strip group, and after assembly, the handset is placed on the hook button. When the hook lever and the locking lever are rotated, the engagement between them is released, whereby the contacts of the contact strip group are placed in an open incoming call state. switch.