JPS61251348A - Switching mechanism for telephone set - Google Patents

Abstract

PURPOSE:To reduce number of components and provide compact sizes for a telephone set having a speakerphone function by installing a switch mechanism beneath the speaker button to be interlocked with the handset electrically. CONSTITUTION:Pressing the speaker button 5 causes a lever to press a movable contact 12 to be contact to a speakerphone contact 10, entering into operating condition of the speaker. A protrusion 17 is latched to the lower latching part of a switch 20 to keep the lever 16 pressed. When response voice from the speaker because of answering of the other party and the handset is lifted up, a hook switch is turned on to connect it to the line. Since an electromagnetic coil 14 is operated simultaneously to attract a magnet piece 25 to vibrate the switch 20 to the specified direction, the lever 16 and the speaker button 5 are pushed up to their original positions by the elasticity of the movable contact spring 13 to block the line at the speakerphone side.

Description

[Detailed Description of the Invention] [Summary] In a telephone equipped with a speaker receiving function, when the handset is lifted and the telephone circuit on the hook switch side is connected, the electromagnetic coil is activated to release the engagement between the converter and the lever. , return the lever linked to the speaker button, and switch off the communication circuit on the speaker receiving side.

[Industrial application field]

The present invention relates to a switch switching structure between a hook switch and a speaker receiving switch, which is installed in a telephone equipped with a speaker receiving function.

In recent years, as shown in FIG. 3, in addition to the normal telephone function consisting of a handset 2 connected to the telephone main body 1 by a cord 3, the telephone main body 1 is equipped with a speaker 5A and a speaker button 5. Telephones equipped with a speaker receiving function have been developed and offered.

The handset 2 has a receiver part 2A at one end of the handle.
However, a transmitter section 2B is attached to the other end. When the handset 2 is hung on the telephone main body 1, a hook button 4 is attached to the position of the telephone main body 1 in which the handset section 2A is accommodated, and the hook button 4 is pressed by the telephone receiver section 2A to disconnect the hook switch. There is.

Further, a speaker 5A is attached to a portion of the telephone main body 1 corresponding to the handle, and a speaker button 5 is attached adjacent to the dial button IA.

In the telephone set constructed in this way, the user picks up the handset 2, raises the hook button 4 that had been pressed by the handset 28, turns on the hook switch attached to the bottom of the hook button 4, and connects the telephone call circuit. later,
The ability to call the other party and have a conversation by operating the dial button IA is the same as with a normal telephone. However, in addition to this, it also has the following speaker receiving function.

That is, when the speaker button 5 is pressed while the handset 2 is still hung on the telephone body 1, the speaker switch attached to the bottom of the speaker button 5 is turned on, and the communication circuit is connected (the state is the same as when the hook switch is turned on). (the telephone line is connected), and the communication circuit on the speaker receiver side is closed.

Therefore, when the dial button IA is operated to call the other party, and the other party answers, the voice can be heard through the speaker.At this point, when the handset 2 is picked up, the speaker receiving contact is switched off and the speaker is turned off. Since the communication circuit on the receiver side is opened and the communication circuit on the hook switch side is closed, it is possible to communicate with high quality audio.

It should be noted that if there is no response and the other party is absent, the speaker is configured so that by pressing the speaker button 5 again, the speaker reception switch is turned off and the call returns to normal.

At this time, there is a strong demand for a simple, low-cost switch switching mechanism that switches the communication circuit on the speaker button side to the communication circuit on the hook switch side.

[Conventional technology]

FIG. 4 is a perspective view of a conventional switch switching mechanism. In FIG. 4, 4 has an upper end surface protruding above the upper cover of the telephone main body 1;
This is a hook button that is pressed by the handset section 2A of the handset 2.

The hook button 4 is mounted so as to be able to swing about the hook button support shaft, and is constantly applied with upward force by the hook side actuator 8.

Further, a hook switch 6 for connecting a communication circuit is attached to the lower part of the hook button 4.

The hook-side actuator 8 is mounted parallel to the hook button 4, and is connected to the speaker button 5, that is, the speaker receiver switch 7.
It can be slid horizontally in the direction, and is always pressed toward the speaker receiver switch 7 side by the elasticity of the compression coil spring.

Since a bar protrudes from the side surface of the hook button 4 and is in contact with the upper slope of the hook side actuator 8, when the handset 2 is set in the telephone body, the hook button 4 is pushed down by the weight of the handset 20. Hook switch 6 is off.

When the handset 2 is picked up, the hook side actuator 8
moves toward the speaker receiver switch 7 due to the elasticity of the compression coil spring, so the hook button 4 is raised via the bar, the hook switch 6 is turned on, and the call circuit is connected.

Furthermore, a protruding piece is fixed to the side surface of the hook-side actuator 8 to engage with the actuating piece 7B attached to the speaker receiver switch 7 as desired.

On the other hand, the lower part of the speaker button 5 is fixedly connected to one end of a lever 9 that swings about a lever shaft attached to the bottom plate of the telephone main body.

The other end of the lever 9 extending in the direction of the speaker receiver switch 7 is connected to a converter 9 which is angled in side view.
It is engaged with the upper end of A. This converter 9A is configured to be able to swing around the corner as a fulcrum, and its lower end extending downward moves inside the housing of the speaker receiver switch and cheerer.
It is fitted into the hole of the speaker side actuator 7^ which slides in the horizontal direction.

The speaker-side actuator 7A is constantly pressed in the direction of the speaker button 5 by a compression coil spring installed in the speaker receiver switch 7. Therefore, speaker button 5
is always pushed up so that it is located at the top dead center, and the speaker receiving switch 7 is in an OFF state.

Next, the switching operation will be explained.

When the speaker button 5 is pressed, the lever 9 swings and the converter 9
Push the speaker-side actuator 7A into the speaker receiver switch 7 via A. Therefore, the speaker receiving switch 7 is turned on, and the communication circuit is turned on.

At this time, the pin of the speaker-side actuator 7^ engages with the actuator piece 7B, so the speaker button 5 is maintained in a depressed state. Therefore, the speaker listening switch 7 remains on. Therefore, operate the dial button,
You can call the other party and listen to the response voice from the speaker. When the other party answers and picks up the handset 2, the switch is toggled as described below.

That is, when the handset 2 is picked up, the hook-side actuator 8 starts moving toward the speaker receiver switch 7 due to the elasticity of the compression coil spring. This raises the hook button 4, turns on the hook switch 6, and connects the telephone line on the hook switch 6 side as well. ``When the hook-side actuator 8 moves further, the projecting piece of the hook-side actuator pushes under the actuating piece 7B and lifts the actuating piece 7B. As a result, the engagement between the pin of the speaker-side actuator 7A and the actuator piece 7B is released, and the speaker-side actuator 7
A moves back and returns to its original position due to the elasticity of a spring (not shown).

That is, the speaker receiving switch 7 is turned off, the circuit of the speaker 5A is cut off, and the switching is completed.

[Problem that the invention seeks to solve]

However, the conventional switch switching mechanism described above has a structure in which the speaker button and the hook button are mechanically connected within the phone body, and requires a large number of parts and components with a complicated structure, resulting in high costs. There is a problem.

Further, since the hook button is a mechanical connection means, the locations where the hook button can be installed are restricted, and there is a problem in that miniaturization of the telephone is hindered.

Means for Solving Problem c] In order to solve the above-mentioned conventional problems, the present invention, as shown in FIG. A contact mechanism unit in which a contact 10 for the ° and a call circuit contact 11 disposed above the movable contact 12 are mounted on a base 18, respectively, and a movable contact spring 1 by pressing the speaker button 5.
3, the protrusion 17 swings down against the elasticity of the contact point 12 to bring the movable contact 12 into contact with the speaker receiving contact 10, the protrusion 17 is pivotally supported at the base 18, and the protrusion 17 engages the converter 20 in a predetermined manner at the tip. a lever 16 with a converter 20 having an upper portion fitted into a pivot shaft 19 and swingably mounted on a base 18; It has a magnet piece 25 fixed to the lower tip of the child 20 and magnetic poles 15A arranged on both sides of the magnet piece 25. When the handset is picked up, electricity is applied to the magnetic pole 15A, which magnetizes the magnet piece 25. The electromagnetic coil 14 swings the converter 20 in a direction to release the engagement of the protrusion 17. [Function] According to the means of the present invention, when the speaker button 5 is pressed, The lever 16 pushes down the movable contact 12 and the movable contact 12
comes into contact with the speaker receiver contact 10, the speaker receiver circuit is turned on, the speech line is connected, and the speaker is activated. On the other hand, in this state, the protrusion 17 engages with the lower locking portion of the converter 20, and the lever 16 is maintained in a depressed state. Therefore, the movable contact 12 is the speaker receiving contact 1.
Maintain contact with 0.

When the other party answers the call, a response voice is emitted from the speaker, and the user picks up the handset, the hook switch is turned on and the call line is connected on the hook switch side as well.

Thereafter, the electromagnetic coil 14 is activated almost simultaneously, the magnetic pole 15A is magnetized, the magnet piece 25 is attracted, and the converter 20 is swung in a predetermined direction. Therefore, the protrusion 17 is disengaged from the lower locking portion and the engagement is released, and the lever 16 and the speaker button 5 are pushed up by the elasticity of the movable contact spring 13 and returned to their original positions.

Therefore, the movable contact 12 moves away from the speaker receiving contact 10, rises and contacts the calling circuit contact 11, and the call line on the speaker receiving side is disconnected.

Press the speaker button 5 to dial, and if the other party is absent, press the speaker button 5 again. In this way, similarly to the case where the electromagnetic coil 14 is activated, the protrusion 17 is disengaged from the lower locking portion and falls downward, the engagement is released, and the converter 20 swings as desired. Therefore, the protrusion 17 can rise beyond the lower locking portion. Therefore, the lever 16 and the speaker button 5 are pushed up by the elasticity of the movable contact spring 13 and returned to their original positions.

〔Example〕

The present invention will be specifically explained below with reference to illustrated examples. Note that the same reference numerals indicate the same objects throughout the figures.

FIG. 1 is a perspective view of one embodiment of the present invention, and FIG. 2 is a perspective view of essential parts.

In FIGS. 1 and 2, the base 18 has a substantially channel-shaped configuration when viewed from the side.

A movable contact spring 13 having a movable contact 12 at its tip is fixed at its base to one vertical plate side of the base 18, and is cantilevered substantially horizontally above the horizontal plate of the base 18.

The speaker receiving contact 10 fixed to the tip of each contact spring and the calling circuit contact 11 are movable contacts 12
The contact springs are parallel to each other horizontally, with the speaker receiver contact 10 facing downward and the calling circuit contact 11 facing upward, with the other end of the contact spring facing the other vertical plate side of the base 18. It is cantilevered and fixed.

The movable contact 12 is configured to come into elastic contact with the calling circuit contact 11 when no external force is applied.

For example, the elongated rectangular plate-shaped lever 16 made of synthetic resin has a protrusion that comes into contact with the upper surface of the movable contact spring 13 on the lower surface of the central part of the lever, and a wedge-shaped recess on the upper surface into which the wedge-shaped protrusion of the speaker button 5 fits. is formed.

The lever 16 is mounted almost horizontally above the movable contact spring 13, and the lever 16 is attached to the base 1 to which the movable contact spring 13 is fixed.
It is pivoted to the upper end of the vertical plate 8, and is configured to swing when the speaker button 5 is pressed.

A bottle-shaped protrusion 17 is formed at the end of the lever 16 on the swinging side opposite to the pivoted end thereof so as to engage with the converter 20 as desired.

On the horizontal plate of the base 18 corresponding to the protrusion 17, on the protrusion 17 side, an iron core 15 having a pair of magnetic poles 15A facing each other with a desired gap is installed horizontally. , an electromagnetic coil 14 is wound thereon.

This iron core 15 is configured so that when the electromagnetic coil 14 is energized, a pair of magnetic poles 15A become the same pole (for example, S pole).

Above the magnetic pole 15A, a pivot shaft 19 is fixed to a vertical plate of the base 18 so as to be parallel to the projection 17.

For example, the rectangular converter 20 made of synthetic resin has a hole at the upper end that passes through the pivot shaft 19 loosely, and extends in the direction of arrow B in the axial direction of the pivot shaft 19 and perpendicularly to the pivot shaft 19. It is mounted so that it can swing by a desired angle in the direction of arrow A.

The converter 20 is provided with an upper engaging part 21 by cutting out a part of the vertical side edge, and the lower green part of the upper engaging part 21 is an arc-shaped sliding end surface 21A with the opening side diagonally downward. It becomes.

Further, a lower part of the opening side edge of the upper engaging part 21 is cut out, and a lower locking part 22 is provided below the upper engaging part 21. Further, on the side of the lower locking portion 22, a warped tongue piece 23 is formed which is warped in the opposite direction to the protrusion 17.

After the converter 20 is inserted into the pivot shaft 19, a coil spring 30 is inserted into the pivot shaft 19, and one end of the coil spring 30 is engaged with the converter 20. This coil spring 30 applies an external force to the converter 20 so as to swing it in two orthogonal directions opposite to the directions of arrows A and B.

Note that the converter 2 is pressed by the coil spring 30.
A stopper (not shown) is provided on the pivot shaft 19 so as to be locked at an angular position such that the angle 0 is approximately vertical.

The lower end of the converter 20 is configured to be located in the center of the gap formed by the magnetic poles 15A, and a magnet piece 25 is attached to this lower end.
is fixed. A desired air gap is provided between both side surfaces of the magnet piece 25 and the end surface of each magnetic pole 15A.

Further, the polarity of the magnet piece 25 is fixed such that when the magnetic pole 15A becomes an S pole, the pole opposite to the protrusion 17 becomes an N pole.

Since each component is constructed and assembled as described above, the lever 16 is normally pushed up by the movable contact spring 13 and the protrusion 17 is located in the upper engagement portion 21. Further, the movable contact 12 comes into elastic contact with the calling circuit contact 11, the calling circuit is closed, and a ringing sound can be generated.

When the speaker button 5 is pressed, the lever 16 pushes down the movable contact spring 13 and the movable contact 12 connects to the speaker receiving contact 1.
0, the speaker receiving circuit is turned on, the speech line is connected, and the speaker is activated.

On the other hand, in this state, the protrusion 17 presses the sliding end surface 21A, so the converter 20 swings in the direction of arrow A, and the protrusion 17 slides down the sliding end surface 21A. Then, it goes around to the lower locking part 22 side at the opening. In this state, the converter 20 returns to its original state due to the elasticity of the coil spring 30. Therefore, even if the speaker button 5 is released, the lever 16 does not return because the protrusion 17 engages with the lower locking portion 22. That is, the movable contact 12 maintains a contact state with the speaker receiving contact 10.

When the other party answers the call, a response voice is emitted from the speaker 5A, and the handset 2 is picked up, the hook switch is turned on and the call line is connected on the hook switch side as well.

Then, the electromagnetic coil 14 is energized, the magnetic pole 15A is magnetized (S pole in the figure), the magnet piece 25 is attracted, and the converter 20 swings in the direction of arrow B.

Therefore, the protrusion 17 comes off from the lower locking portion 22. Button 1
When the engagement of 7 is released, the converter 20 is connected to the coil spring 30.
It swings in the direction opposite to the direction of arrow A due to the elasticity of. However, at 9, the protrusion 17 is relatively shifted laterally and its tip comes into contact with the inner surface of the warped tongue piece 23, and the lever 16 rises and returns due to the elasticity of the movable contact spring 13, and the protrusion 1
7. Returns to the position of the upper engaging portion 21 again.

Thus, the movable contact 12 is separated from the speaker receiving contact 10, and the communication circuit on the speaker receiving side is disconnected.

Further, the movable contact 12 comes into elastic contact with the calling circuit contact 11.

Press the speaker button 5 to dial, and if the other party is absent, press the speaker button 5 again. In this way, as in the case where the electromagnetic coil 14 is activated, the protrusion 17 disengages from the lower locking portion 22 and falls, the engagement is released, the converter 20 swings as desired, and the protrusion 17 warps. It moves inside the tongue piece 23.

Therefore, the lever 16 and the speaker button 5 are pushed up by the elasticity of the movable contact spring 13 and returned to their original positions.

(Effect of the invention)

Claims (1)

[Scope of Claims] A telephone equipped with a speaker receiving function includes a movable contact (12) that moves up and down, a speaker receiving contact (10) disposed below the movable contact, and a speaker receiving contact (10) disposed above the movable contact. A contact mechanism section in which the call circuit contacts (11) to be installed are respectively attached to the base (18), and a speaker button (5).
The base part of the base (18) swings down against the elasticity of the movable contact spring (13) to bring the movable contact (12) into contact with the speaker receiving contact (10).
a lever (16) which is pivotally supported by the lever (16) and has a protrusion (17) at its tip that engages the converter (20) in a predetermined manner;
6), the lower locking part where the protrusion (17) locks is held so that the speaker button (5) is pressed again, or the electromagnetic coil (14) is activated, The base (17) has a means for releasing the lock from the protrusion (17), and the upper part is fitted into the pivot shaft (19) so as to be swingable.
a converter (20) attached to the converter (20);
) has a magnet piece (25) fixed to the lower end of the handset, and magnetic poles (15A) arranged on both sides of the magnet piece (25), and the magnetic poles (15A) are energized by picking up the handset. A switch switching mechanism for a telephone set, comprising: an electromagnetic coil (14) that is magnetized and swings the converter (20) in a direction to release the engagement of the protrusion (17).