JPH0216629B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention has a simple structure, and in addition to on-hook dialing and receiving amplification functions, functions for holding calls and receiving amplification functions can be performed with a single operation button. The present invention relates to an on-hook mechanism in a telephone set as described above.

[Prior art]

The phone's on-hook mechanism uses a function switch (line switch) built into the phone to turn the handset on and off.
This device allows you to make a call to the other party by pressing a button without holding the handset in your hand, and also allows you to confirm the other party's response using the telephone's built-in speaker. A telephone disclosed in Publication No. 57-202166 is known. However, since the line switch of such a telephone needs to keep the subscriber telephone line connected and turn the speaker on and off during a call, the first push button locks the switch, and the second push releases the lock. Since a so-called self-locking switch is used, which automatically resets the switch after it has been switched off, the switch itself is expensive and there are problems when replacing the switch when specifications are changed or the like.

In addition to the on-hook function, in addition to the on-hook function, in order to make it more convenient for the user, we have recently expanded the functions of telephones, and in addition to the on-hook function, when it is necessary to temporarily leave the telephone during a call, a melody can be played and the call can be put on hold. function (hereinafter referred to as the hold function), or if it is turned on or off during a call.
There is a demand for a telephone with a function (hereinafter referred to as a loudspeaker function) for returning the telephone to the hooked state and listening to the other party's response from the telephone's built-in speaker.

[Summary of the invention]

The present invention has been made in view of the above-mentioned points, and its purpose is to use a general non-lock type switch as a line switch, and to operate this switch with a self-lock type operation button linked to a hook button. By simplifying the structure of the switch itself, and by pressing only the operation button during a call to put it on hold, or turning the handset on and off while it is pressed, it is possible to switch to amplification, making it possible to operate at low cost. The present invention provides an on-hook mechanism for telephones with improved performance and functionality.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is an external perspective view of a telephone that employs the on-hook mechanism according to the present invention, with the handset in the on-hook state (picked up), and FIG. 2 as shown in FIG.
3 is an exploded perspective view of the on-hook mechanism, FIG. 4 is a sectional view taken along the arrow in FIG. 2A, and FIG.
Figures a and b are diagrams showing the off state and on state of the operation button. In FIGS. 1 and 2, telephone 1
is equipped with a telephone housing 7 that incorporates an on-hook mechanism 2, a speaker 3, a printed circuit board 4, a hook switch 5, a line switch 6, etc., which will be described later, and a handset 8, and a push button dial is provided on the surface of the telephone housing 7. 9, a hook button 10 is provided corresponding to the hook switch 5, and an operation button (function button) 11 is provided corresponding to the line switch 6. Then, this telephone 1 is connected to the telephone line by pressing the operation button 11 in the on-hook state to turn on the line switch 6, and then operating the push button erroneous transmission 9 to make a call to the other party. Even if you are making a call using the handset 8, turn on the operation button 11 and turn on the handset 8.
If you leave it in the on-hook state, a melody will play and you can switch to the hold state.Furthermore, even if you are talking on handset 8, you can press operation button 1.
When the handset 8 is returned to the on-hook state with the button 1 still pressed in, a response voice from the other party is generated from the speaker 3, and has three functions: an on-hook function, a hold function, and an amplification function. There is. Note that the speaker 3 remains on as long as the operation button 11 is turned on, and is turned off when the operation button 11 is turned off. Even when the button is pressed down and locked in that state, and then dialed in the on-hook state, the dial confirmation tone, response voice of the other party, etc. at that time are generated from the speaker 3. Also,
The hook switch 5 and the line switch 6
are each constituted by a general leaf switch and fixed at a predetermined position on the upper surface of the printed circuit board 4, and each has a pair of springs 15a, 15.
b, 16a, 16b, the movable bodies 5A, 6
A is urged in the directions of arrows B and C in FIG. 3. In this case, each movable body 5A, 6A houses a movable contact and a fixed contact (both not shown) therein,
One end is rotatably supported by frames 18 and 19.

As shown in FIGS. 2 to 4, the on-hook mechanism 2 is generally composed of the operation button 11, the on-hook lever 25, the self-lock cam 26, the base 27, the bracket 28, etc. 11, the operation button 11 is pressed for the first time.
The lock is locked, and the locked state is released by a second push-in operation. Also,
Even in the locked state, when the hook button 10 is lowered in response to an on-hook operation of the handset 8, the lock button 10 is released in conjunction with this.

The operation button 11 is disposed in a button mounting hole 31 of a panel 30 attached to the top surface of the telephone housing 7 so as to be freely visible and retractable. An engagement pin 32 as an engagement portion that repeats the above-mentioned operation is integrally protruded, and extends downward through an insertion hole 34 provided in the horizontal plate 27a of the base 27 at the center of the lower surface of the base 27. A line switch pressing portion 35 that comes into contact with the tip of the movable body 6A is integrally provided vertically. A compression coil spring 37 is attached to the line switch pressing portion 35 and elastically loaded between the lower surface of the operation button 11 and the horizontal plate 27a, and the spring 37 and the movable body of the line switch 6 are connected to each other. The pair of springs 16a, 16b acting on 6A
The operation button 11 is always urged upward by the force of .

The base 27 is formed into a substantially inverted L shape and integrally includes the horizontal plate 27a and the vertical plate 27b, and is fixed to the lower surface of the panel 30 with screws. On the outer surface of the vertical plate 27b, the bracket 28 is arranged parallel to the stud 3.
A lever shaft 39 that pivotally supports the on-hook lever 25 in a vertically rotatable manner and a cam shaft 40 that pivotally supports the self-locking cam 26 are disposed between these two members. . Further, the vertical plate 27b has an engagement pin 3 of the operation button 11.
A long groove 41 is formed through which the holder 2 can be inserted and moved in the vertical direction.

The on-hook lever 25 has an intermediate portion pivoted by the lever shaft 9 and extends long in the front-rear direction, and has a rod-shaped tip on the tip surface for releasing the engagement between the operation button 11 and the self-locking cam 26. A lock release portion 45 is integrally provided to protrude forward, and the rear end portion is bent horizontally into a substantially hook shape and is engaged with the hook button 10 from below. This on-foot lever 25 is always given the habit of rotating counterclockwise in FIG. 3 by a torsion coil spring 46 attached to the stand 38.
The hook button 10 is urged upward. The hook button 10 also has a pair of springs 15 that bias the movable body 5A of the hook switch 5.
a and 15b are also biased upward.

The self-locking cam 26 consists of a main body 26A facing parallel to the vertical plate 27b of the base 27, and a U-shaped frame 26B integrally provided on the side surface of the bracket 28 of the main body 26A.
An engagement groove 48 (see FIG. 5) in which the engagement pin 32 of the operation button 11 engages is formed at the upper end of the side surface of the base 27 of A. The engagement groove 48 extends rearward and obliquely upward from the front end side of the upper surface of the main body 26A, and is formed in a substantially rectangular shape with the rear end facing vertically downward. As shown in FIG. 4, a release preventing wall 50 extends from the surface of the base 27 by a dimension (Δl) larger than the amount of rocking of the self-locking cam 26.
(the shaded area in Figure 5). The main body 26
The top surface of A is formed into a gently curved surface (or slope) that slopes toward the front edge, and the release prevention wall 50 also slopes in the same direction at almost the same angle of inclination as the top surface, and extends to the front edge of the main body 26A. Extending. A lock release cam 51 is integrally provided at the middle portion of the inner surface of the U-shaped frame 26B. This lock release cam 51 is constituted by a V-shaped protrusion, thereby converting the movement of the on-hook lever 25 into a left-right movement (movement in the directions of arrows D and E in FIG. 4) of the self-lock cam 26. Normally, that is, in the on-hook state of the handset 8, the lock release portion 45 of the on-hook lever 25 is located above the lock release cam 51.

A cam shaft 40 rotatably supporting the self-locking cam 26 is cantilever-supported by a bearing portion 55 of the base 27, and its free end is attached to the bracket 2.
8 is engaged from below into an engagement recess 56 formed at the front end of the lower end edge. Therefore, the camshaft 40 can be bent downward.

Further, the camshaft 40 is provided with a torsion coil spring 5.
7 is attached, and this single spring 57 urges the self-locking cam 26 toward the base 27 and at the same time always urges it counterclockwise in FIG. A stopper pin 60 for restricting the counterclockwise rotation of the self-locking cam 26 is integrally provided on the vertical plate 27b of the base 27 and projects therefrom. The self-locking cam 26 can swing in the directions of arrows D and E in FIG. 4 by setting the diameter of the hole through which the cam shaft 40 is inserted to be larger than that of the shaft.

Next, three methods of using the telephone 1 equipped with the on-hook mechanism 2 having the above configuration will be described.

First, if you push in the hook lever 11 with the handset 8 on the hook without removing it,
The line switch pressing portion 35 rotates the movable body 6A of the line switch 6 downward against the pair of springs 16a, 16b to turn on the switch 6, so that the telephone line is maintained connected. This connection can be maintained by pressing the operation button 11 from the state shown in Fig. 5a.
Since the engaging pin 32 descends while pressing the upper surface of the self-locking cam 26, the cam 26 is pressed against the camshaft 4.
0 in the counterclockwise direction against the spring 57, and when the engagement groove 48 and the engagement pin 32 align, the self-locking cam 26 returns to rotation under the force of the spring 57, and This is maintained by locking the engagement pin 32 in the engagement groove 48 and locking the operation button 11. FIG. 5b shows this locked condition. Therefore, by operating the push button dial 9, it is possible to make a call to the other party in an on-hook state, and the dial confirmation and response voice of the other party are generated from the speaker 3. Also, if the other party picks up the handset 8 when the other party answers, the handset 8
When the on-hook is turned on, the hook button 10 is raised by the force of the pair of springs 15a, 15b of the hook switch 5 and the spring 46 of the on-hook lever 25, and the movable body 5A of the hook switch 5 is released. pair of springs 15
a and 15b to turn the hook switch 5 on. Further, when the hook button 10 is raised, the on-hook lever 25 is also released from the button, so that the on-hook lever 25 is rotated counterclockwise in FIG. 3 about the lever shaft 39 by the force of the spring 46. At this time, the lock release part 45 slides on the slope of the lock release cam 51 of the self-lock cam 26, swings the self-lock cam 26 in the direction of arrow D in FIG. It moves below the release cam 51. When the self-locking cam 26 swings in the direction of arrow D, the engagement pin 32 comes out of the engagement groove 48, and at the same time, the self-locking cam 26 moves clockwise by a small angle in FIG. 5b due to the force of the spring 57. The rotation returns to contact the stopper pin 60, and the relative positions of the engagement pin 32 and the engagement groove 48 are shifted. As a result, the operation button 11 is activated by the spring 37 and the pair of springs 16 of the line switch 6.
The line switch 6 is turned off by the force of the a and 16b, and the voice generated from the speaker 3 is cut off. From then on, a telephone conversation is performed using the handset 8. When the handset 8 is returned to the telephone housing 7 after the call ends, the hook button 10 is lowered and the on-hook lever 25 is rotated clockwise in FIG. 3, thereby moving the self-lock cam 26 in the direction D in FIG. 4. But at this time, the operation button 1 has already been pressed.
1 is disengaged from the self-lock cam 26 and is in the OFF state, so its state does not change at all.

Next, if it becomes necessary to temporarily leave the telephone 1 while the handset 8 is in the middle of a call, the operation button 11 is pressed again while the handset 8 is in the on-hook state and is locked by the self-lock cam 26 as described above. Then, line switch 6 is turned on,
The melody circuit built into the telephone housing 7 is turned on. Therefore, a melody is sent to the other party and the call is put on hold. To return to the original call state from the hold state, the locked operation button 11 may be pushed deeper to release the lock state with the self-lock cam 26, and the line switch 6 may be turned off. In addition, in this series of operations, since the switch 5 is maintained in the on state due to the on-hook state of the handset 8, the telephone circuit remains connected and there is no problem in making a call. There is no.

Next, when it becomes necessary to listen to the contents of a call made by a large number of people during a call, the user can press the operation button 11 and turn on/off the handset 8 while keeping the button pressed. Then, the telephone line is maintained by turning on the line switch 6 instead of the telephone switch 5, and by turning on the line switch 6, the speaker 3 is turned on, and the speaker 3 generates the voice of the other party. In this case, if the operation button 11 is kept fully pushed in, the engagement pin 32 that descends while pressing the top surface of the self-locking cam 26 engages the engagement groove 48 and at the same time hits the top surface of the release prevention wall 50. come into contact with Next, the engagement between the release preventing wall 50 and the engagement pin 32 restricts the self-locking cam 26 from swinging in the direction of arrow D in FIG. Therefore, when the handset 8 is turned on and the on-hook lever 25 rotates against the spring 46, the lock release portion 45
comes into contact with the lower slope of the lock release cam 51, causing the self-lock cam 26 to swing in the direction D in FIG.
In that case, as described above, the release wall 50 is configured to protrude beyond the upper surface of the cam 26 by a dimension Δl that is larger than the amount of swing of the self-locking cam 26 in the direction opposite to the swing direction (direction D), that is, toward the base 27. Therefore, even if the self-locking cam 26 swings in the D direction as the on-hook lever 25 returns to rotation, the release wall 50 is always located directly below the engagement pin 32. Therefore, the state of contact between the engagement pin 32 and the release wall 50 is maintained. The lock release portion 45 of the on-hook lever 25 passes over the lock release cam 51 and is in the state shown by the solid line in FIG.
The self-locking cam 26 rotates back in the direction of arrow E. When the operation button 11 is released from the pressed state, the engagement pin 32 engages with the engagement groove 48 (the fifth
(state in FIG. b), and prevents the operation button 11 from returning. Therefore, the line switch 6 is maintained in the ON state, and the reception amplification is carried out. Then, when the handset 8 is turned on again for amplification, the hook button 10 moves upward to turn on the switch 5, and the call is switched to the handset 8. At this time, the on-hook lever 25 returns to rotation and rotates the self-lock cam 26 in the direction of arrow E in FIG. 4, so that the engagement pin 32 is engaged with the engagement groove 48 as described above. the state is canceled,
As a result, the operation button 11 returns to the upward position by the force of the spring 37, turning off the line switch 6.
Therefore, the telephone conversation using the original handset 8 is carried out.

Although the above embodiment has been described with reference to a case where it is applied to a desk-type telephone, the present invention is not limited to this and can of course be applied to a wall-mounted telephone. The shape, structure, etc. of the cam 26, the operation button 11, etc. may be modified in various ways.

〔Effect of the invention〕

As explained above, according to the on-hook mechanism in the telephone according to the present invention, dialing in the on-hook state can be performed by changing the operation order of the operation buttons and the on-hook state of the handset 8 and the on-hook state. Furthermore, since it is possible to switch to the hold state and the receive amplification state during a call as well as the amplification of the incoming call, the functions as a telephone can be further improved. In addition, since switching can be done with a single operation button, it is easy to operate and there is less operational burden on the user.Furthermore, the on-hook mechanism locks only the operation button, so line switches can be easily operated. It can be constructed from a general leaf switch, etc., and therefore can be used in common with a foot switch, making it inexpensive and reducing the burden of switch replacement due to changes, etc., which is very effective.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a telephone that employs the on-hook mechanism according to the present invention, with the handset in the off-hook state, Fig. 2 is a cross-sectional view taken along the line shown in Fig. FIG. 4 is an exploded perspective view of the hook mechanism, FIG. 4 is a sectional view taken along arrow A in FIG. 2, and FIGS. 2...On-hook mechanism, 3...Speaker, 5
...Full switch, 6...Line switch, 8
...Transmitter, 10...Hook button, 11...Operation button, 25...On hook lever, 26...Self-lock cam, 32...Engage pin, 35...Line switch pressing part, 45...Lock release Part, 4
8... Engagement groove, 50... Release prevention wall, 51... Lock release cam.

Claims (1)

[Claims] 1. An on-hook lever that is supported in a swingable manner and has one end that engages with a hook button that operates a hook switch and has a lock release portion provided on the other end, a lock release cam that is engaged with the lock release portion, and a release prevention wall. and an operation button having an engaging part that engages with the self-lock cam and repeats locking and releasing according to the operation order, and a line switch pressing part that presses the line switch. The lock state between the self-locking cam and the engaging portion of the operation button is such that the lock releasing portion and the lock releasing cam engage with each other as the on-hook lever operates in conjunction with the hook button. and the release wall is released by operating the self-lock cam, and the engagement portion of the operation button is lengthened in the direction of swing of the self-lock cam (Δl) regardless of the swing motion of the on-hook lever. 1. An on-hook mechanism for a telephone set, wherein the on-hook mechanism maintains an abutting and engaged state by pressing the button, and when the pressed state is released, the button shifts to a locked state to prevent the operation button from returning.