JPH0444858B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is a multiple switch that has a plurality of switch functions and that controls these different switch functions in a mutually related manner. In particular, the present invention relates to a multiple switch that is useful as a telephone switch that allows one-handed dialing operation.

(Prior Art) In recent years, telephones have not only been improved in their basic transmitting and receiving functions, but also various functions have been added for ease of use. For example, a device that allows you to make a call without having to pick up the handset is one example. Conventionally, such additional functions have been realized through purely electrical processing, which involves installing a control box equipped with a control circuit such as a relay separately from the telephone, and operating a specific pushbutton on the telephone. The control circuit, together with the speaker receiver circuit, opens the network circuit to permit outgoing calls without having to pick up the handset.

(Problems to be Solved by the Invention) However, telephones equipped with the above-mentioned control circuit are very expensive, and therefore cannot be widely used in general households. In order to do this, a separate space must be provided, and since the voltage and current used directly by the telephone are strong, it is not possible to add the above functions directly into the telephone unless the above control circuit is installed. There are other problems.

Therefore, an object of the present invention is to realize the above functions using a mechanism, so that it is small and inexpensive, can be easily installed in a telephone, and can be installed directly in a telephone. The purpose of the present invention is to provide a multiple switch whose functionality is not inhibited by the voltage and current used.

(Means for Solving the Problems) The present invention provides a first rotor and a second rotor for controlling switch contact ON/OFF, each of which is biased to rotate in one direction, and a second rotor in which the second rotor is rotated in one direction. A third rotor, which is biased to rotate in the opposite direction with a strength that overcomes the rotational biasing force, is individually rotatably supported approximately in a straight line, and the second rotor and the third rotor are rotated in opposite directions. an input lever is connected to the third rotor to forcibly rotate the third rotor in the reverse direction against the reverse rotational biasing force, and between the first and second rotors; A pushbutton is arranged which is set to an initial state by a unidirectional rotational biasing force, and a lock pin is provided which engages the pushbutton and locks the pushbutton in a pressed state against the unidirectional rotational biasing force. , the input lever is provided with a cam portion for an unlocking operation in which the lock pin comes into contact with and separates from the input lever during its rotation.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of the housing 2 with the lid 1 (shown in FIG. 2) removed to expose the internal mechanism;
In the figure, this housing 2 is shaded because
This is to avoid confusion between the housing and the components contained therein, and the diagonal lines do not indicate a cross section. This also applies to the diagonal lines in FIGS. 6 and 8.

The housing 2 has rotor chambers 4 and 5 formed on the left and right sides with a narrow small chamber 3 in the center, and a third rotor chamber partially opened to the outside of the right rotor chamber 5. 6 is formed. In the rotor chambers 4, 5, and 6, rotors 7, 8, and 9 are coaxially housed and rotatably supported, respectively, and the first rotor 8 and the second rotor 9 are Therefore, in the description of this embodiment applied to a telephone, which controls on/off of the required switch contacts, the first
The rotor 8 is an on/off control rotor for the speaker reception function, and the second rotor 9 is an on/off control rotor for the network function. The third rotor 10 is rotated in conjunction with the raising and lowering of a handset (not shown), and restricts the rotation of the second rotor 9.

The first rotor 8 and the second rotor 9, by their rotation, connect and separate (on and off) the fixed terminal 11 and the movable terminal 12 as shown in FIG. 13 is expanded on the circumferential surface of the rotor. However, the number of switch contacts that are turned on and off by each rotor 8, 9, and the shape and arrangement of the cam protrusion 13 are individual design matters depending on the electrical equipment that uses the multiple switches, and the Since it is not the gist of the invention, the explanation will be omitted, but in FIG.
5 is only illustrated.

The first rotor 8 and the second rotor 9 are always biased to rotate in one direction by helical springs 16, 17 (Fig. 4) fitted therein, and that direction is the same as the fourth rotor.
This is the direction of arrow a in the figure. Further, the opposing shaft ends of these rotors 8 and 9 are thrust into the small chamber 3, and each of these thrust shaft ends is provided with a pressure-receiving tongue piece 1 in the shape of a magatama.
8 and 19 are integrally provided, and in the case of the small chamber 3, a push button 20 is provided above the pressure receiving tongues 18 and 19. The relationship between the pushbutton 20 and the pressure receiving tongues 18, 19 is as shown in FIG.
A pressure receiving tongue piece 18 is attached to the base step 21 of the pushbutton 20.
The free ends of 19 are in contact with each other, and the helical springs 16,
The solid line position in which the push button 20 is pushed up to the raised position (initial position) by the unidirectional rotation biasing force given by 17 is the normal state, and as the push button 20 is pushed down, the first and second The two rotors 8 and 9 are forced to rotate in reverse. The first rotor 8, which controls the speaker reception function, opens the speaker reception circuit (enables reception) by this forced reverse rotation.
The second rotor 9, which controls the network function, opens the network circuit (enabling communication).

The push button 20 is equipped with a heart cam mechanism that locks the pressed state when it is pressed down for the first time, and releases the lock and returns to its original state when it is pressed down again. This mechanism includes a heart cam groove 22 formed on the side surface of the push button 20 and a lock pin 23 whose tip enters into the heart cam groove 22, and its operation will be explained with reference to FIG. 6. When the lock pin 23 is pushed down, the lock pin 23 rises relatively, and first the rising groove portion 24 of the heart cam groove 22
When the push button reaches the bottom dead center, it falls into the inclined groove part 26 which has a step 25 with respect to the rising groove part 24, and then as the push button is released, the lock pin 23
turns and descends down the inclined groove part 26, and then the approximately U-shaped trough part 28 where the groove becomes deeper by a step 27.
, and prevents the push button 20 from returning upward.
Therefore, this lock position is midway between top dead center and bottom dead center. When pressed down again, the lock pin 23 passes through the trough 28 upwards and forms a step 29 with respect to the trough 28.
It falls into the descending groove section 30 having a height of 1, and then descends through the descending groove section 30 upon release of the push-down, passes through the step 31, and falls back into the original ascending groove section 24. In addition, each step 25, 27, 29, 31 is the lock pin 2.
Of course, this is for preventing the reverse movement of No. 3.

The lock pin 23 is installed parallel to the rotor chamber 5 in which the second rotor 9 is housed, as shown in FIG.
The tip of the pin passes through the through hole 32 formed in the housing partition wall and enters the heart cam groove 22, and the other end, that is, the pin head 23a, passes through the housing outer wall 2a and comes out to the outside, and the pin head 2 that came out
3a is formed into a T-shape as is clear from FIG. Heart cam groove 22 on lock pin 23
A coil spring 33 is fitted around the housing to urge the plunger into engagement, and one end of the spring is fixed to the small shaft diameter portion 23b on the tip end side of the pin, and the other end is brought into contact with the outer wall 2a of the housing. Note that when the lock pin 23 performs the above-mentioned locking and unlocking operations, it not only moves in the forward and backward directions but also oscillates in the lateral direction. The size is ample compared to the original size.

A shaft portion 9a extending through the second rotor 9 is inserted through the inside of the third rotor 10, and the tip of the shaft portion 9a is supported by the housing outer wall 2b constituting the rotor chamber 6, so that it can rotate freely. be. The third rotor 10 has a helical spring 34 that is strong enough to allow the rotational biasing force in the opposite direction to the second rotor 9 as shown by the arrow b in FIG. 4 to overcome the unidirectional rotational biasing force of the second rotor. and engagement protrusions 35, 36 for engaging both rotors 9, 10 with opposing rotational biases.
are provided as shown in FIG. 7, and the second rotor 9 is configured to rotate together with the third rotor 10 under the force of the third rotor 10 in the opposite direction.

An input lever 37 is integrally extended to the third rotor 10 for switching and rotating the third rotor 10 in conjunction with the raising and lowering of the handset. That is, as shown in FIG. 3, a rotating shaft 39 is mounted on the base set 38, and a knob 40 that is linked to raise and lower the handset and a set lever 41 that engages the input lever 37 from below are fixed to the rotating shaft 39. When the handset is placed on the base set 38, the knob 40
When the handset is lowered, the set lever 41 pushes up the input lever 37 as shown by the solid line in FIG.
is raised, and the input lever 37 is moved to the third rotor 10.
Due to the biasing force of a helical spring 34 built in, it is lowered as shown by the chain line in FIG. In FIG. 3, reference numeral 42 indicates a push button for calling oscillation.

The input lever 37 is provided with a cam portion 43 that is approximately C-shaped when viewed from above, and this cam portion 43 has a tapered cam surface 44 in the shape of a horizontally tilted chevron with tapered surfaces on the top and bottom inside both open ends of the cam portion 43. 45 is formed, and the tapered cam surface 4 when the input lever 37 is rotated.
The T-shaped head 23a of the lock pin 23 is positioned within the rotation locus of the lock pins 4 and 45.
Therefore, as the input lever 37 rotates, the tapered cam surfaces 44, 45 come into contact with the T-shaped head 23a from above or below, and the lock pin 23 is held by the coil spring by the tapered cam surfaces 44, 45. 33 in the direction of pulling it out from the heart cam groove 22, and the T-shaped head 23a rides over the tapered cam surfaces 44, 45, thereby causing the lock pin 23 to move back. Note that pulling out the lock pin 23 causes the push button 20 to be unlocked, and in order to achieve this lock release accurately and quickly with a slight slide of the lock pin 23,
As can be seen from the explanation of FIG. 6, it is desirable to add lateral movement to move the lock pin 23 from the valley portion 28 toward the descending groove portion 30 side. Therefore, as shown in FIGS. 7 and 8, the tapered cam surfaces 44 and 45 are not arranged at right angles to the lock pin 23, but are arranged at an angle as shown by arrow C.
Make sure to shake it sideways as it comes into contact with step 3. Furthermore, this lateral swinging structure also makes it possible to release the lock without sliding the lock pin 23.

Next, to explain the operation, when the handset is placed on the base set 38 and the handset is not talking, the input lever 37 linked to the knob 40 is raised, and the third rotor 10 is
The second rotor 9 is in a rotated position against the opposite rotation urging force by the helical spring 34, and therefore the second rotor 9
Since the second rotor 9 receives only the unidirectional rotational biasing force from the helical spring 17 and is set in the same attitude as the first rotor 8, the second rotor 9 receives no reverse rotational biasing force. Pressure receiving tongue pieces 1 of rotors 8 and 9
8 and 19 are pushbuttons 20 together as shown in Figure 9A.
is pushing up. In this state, the speaker receiving circuit is closed and the network circuit is closed.

Next, when the push button 20 is pushed down, the button is locked by the lock pin 23, and each pressure receiving tongue piece 18, 19 is pressed down as shown in FIG.
The second rotors 8 and 9 rotate to open the speaker receiving circuit and the network circuit, allowing calling oscillation. In this manner, the network circuit is opened while the handset is placed on the base set 38, so that the above-mentioned paging operation can be performed with one hand.

Confirm that contact has been made with the other party and that the audio signal is output from the speaker (not shown),
When the handset is picked up, the input lever 37 and the third rotor 10 are rotated at once by the force of the helical spring 34 to rotate in the opposite direction. The push button 20 is unlocked by sliding the lock pin backward and swinging it sideways, so that the button returns to the upper position, the first rotor 8 returns to rotation, and the speaker receiving circuit is closed.
However, since the reverse rotation urging force of the third rotor 10 is set to be strong enough to overcome the unidirectional rotation urging force of the second rotor 9, the rotation of the third rotor 10 causes the engagement protrusion to The second rotor 9, in which the parts 35 and 36 have re-engaged with each other, does not follow the rotation of the first rotor 8 as shown in FIG. remains open to maintain the handset conversation.

After the conversation is over, by returning the handset to the base set 38, the second and third rotating bodies 9 and 10 rotate as before, and the ninth
The initial state is shown in Figure A.

When the handset is picked up in response to a call from the other party, the state shown in FIG. 9C is established and only the network circuit is opened.

(Effects) As detailed above, if the multiple switch according to the present invention is used, for example, as an on/off control switch for a telephone speaker receiving circuit and a network circuit, it is possible to perform push-button operation even when the handset is placed on the base set. By pressing the button, both the first and second rotors for controlling the switch contact on/off are rotated in the on direction, opening both the speaker receiving circuit and the network circuit, allowing the handset to be placed in the base set. Call oscillation operation becomes possible. Furthermore, when the handset is picked up after contact with the other party, the input lever that rotates in conjunction with this picking up operation causes the cam portion to release the locking state of the lock pin from the push button, close the speaker receiving circuit, and input the input lever. A third rotor rotating together with the lever prevents the second rotor from returning and keeps the network circuit open. Therefore, the ringing oscillation can be performed with one hand, and only the speaker receiver circuit can be closed by picking up the handset.The present invention achieves this function using a mechanism, so it is inexpensive and easy to use. It can be easily built into the base set, and therefore the above-mentioned functions can be added without requiring a large-scale control box as in the past, and without being affected by the voltage and current directly used by the telephone.

[Brief explanation of drawings]

The drawings show one embodiment of the multiple switch according to the present invention, and FIG. 1 is a plan view of the inside of the housing, and FIG.
The figure is a sectional view showing the relationship between the rotor and switch contacts, Figure 3 is a mechanical diagram of the switch applied to a multiple switch telephone, Figure 4 is an exploded perspective view of the switch, and Figure 5
The figure is a sectional view of the area around the push button, Figures 6A and B are explanatory diagrams of the operation of the heart cam groove and the lock pin, Figure 7 is a perspective view of the third rotor, and Figure 8 is a plan view of the same.
FIGS. 9A, B, and C are operational diagrams illustrating the function of the switch. 8, 9, 10... Rotor, 16, 17, 34... Spiral spring, 20... Push button, 22... Heart cam groove, 23... Lock pin, 37... Input lever, 4
3...Cam part.

Claims (1)

[Claims] 1 A first rotor and a second rotor for switch contact ON/OFF control, each of which is biased to rotate in one direction, and a rotor that is rotated in the opposite direction with the strength to overcome the biasing force of the second rotor to rotate in one direction. The third rotor is rotatably supported substantially in a straight line, and the second
The rotor and the third rotor are engaged with each other with rotational urging forces in opposite directions, and an input lever is connected to the third rotor for forcibly rotating the third rotor in the opposite direction against the reverse rotational urging force. , and a push button that is set to an initial state by a unidirectional rotational biasing force is disposed between the first and second rotors, and is engaged with the pushbutton to apply the unidirectional rotational biasing force. A multiple switch which is provided with a lock pin that locks the pressed state of the pushbutton when the input lever is turned, and a cam portion for unlocking operation in which the lock pin comes into contact with and separates from the input lever during its rotation.