JPH046290Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a switch operation mechanism for a handset that incorporates a communication circuit and a switch in the telephone body.

[Conventional technology]

Recently, various one-piece telephones that are extremely compact and convenient to carry have been proposed (Example Kosho 62-
Publication No. 16050). In other words, this one-piece telephone consists of a telephone main body, which has an external shape that is almost the same as the handset and receiver of a general telephone, and a stand on which the telephone main body is usually placed. A transmitter (microphone) and a receiver (speaker) are incorporated into the main body on both sides, and a touch switch, a touch switch operating mechanism, a dial mechanism, a communication circuit network, a control circuit network, etc. are built into the grip. Therefore, when using the telephone, the main body of the telephone is picked up from the stand and used for dialing or making a call, just like a regular telephone. At this time, when the hook button is released, the hook switch is activated and the call is enabled. A hook switch that utilizes a bullet contact is generally used, and the resilient force of the contact urges the hook switch in the direction of protruding from a hook button guide hole provided in the telephone body. This type of hook switch requires a certain amount of stroke of the hook button to drive the bullet contact. Therefore, the telephone main body is required to have a certain height dimension to ensure this stroke.

Therefore, recently, microswitches have been used as foot switches in order to reduce the stroke and because they are small and inexpensive.

[Problem that the invention attempts to solve]

However, since the actuator of the microswitch has a small spring force, it is unable to apply sufficient return force to the hook button, resulting in problems in terms of stability and reliability of operation.

Therefore, the present invention aims to solve the above-mentioned problems and provide a hook button actuation mechanism for a handset that is simple in structure and capable of reliably and quickly returning the hook button.

[Means for solving problems]

In order to achieve the above object, the present invention uses a printed circuit board on which the micro switch is mounted, which is disposed inside the telephone body and inserted into the communication circuit, and a support part formed inside the telephone body. A switch actuation lever is provided with a substantially central fulcrum portion swingably supported, one end of which is provided with a switch actuation portion that engages with the actuator of the microswitch, and the other end of which is provided with a button drive portion; a hook button which is incorporated into the hook button guide hole so as to be freely retractable and whose bottom portion is provided with a connecting portion that engages with a button driving portion of the switch actuating lever; It consists of a spring that biases in the direction of

[Effect]

In the present invention, a spring provided separately from the microswitch imparts a return behavior to the hook button. Further, a switch operating lever operated in conjunction with the hook button controls opening and closing of the micro switch.

〔Example〕

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

FIG. 1 is a sectional view of essential parts showing an embodiment of a handset equipped with a switch operating mechanism according to the present invention;
FIG. 2 is an exploded perspective view of the same mechanism, and FIG. 3 is an external perspective view of the handset and stand. First, the structure of the handset and receiver will be briefly explained with reference to FIG. These make up a one-piece telephone.

The telephone main body 2 is composed of an upper case 2A and a lower case 2B which are divided into two parts and integrally joined together, and a receiver 5 is mounted on the inner surface of one longitudinal side of the main body 2.
(Fig. 1) is integrally provided with a built-in receiver part 4,
On the other inner surface, a transmitter 6 having a built-in handset and receiver (not shown) is integrally protruded. Inside the grip section 7 provided between the receiver section 4 and the transmitter section 6, there is a printed circuit board 8 forming a communication circuit network and a control circuit network, a switch 9, and a switch operating mechanism 10 (all of which are connected to a first (see figure), etc., and a dial button 11 of a dial mechanism, a volume changeover switch 12, a hook button 13 of a hook switch operating mechanism 10, etc. are arranged on its inner surface. In addition, the receiver section 4 and the transmitter section 6
Sound holes 15 and 16 are provided on the surface of the transmitter section 6, respectively, and sound holes 15 and 16 are provided on the surface of the transmitter section 6, respectively.
6 are provided respectively, and the transmitting section 6
A machine string 17 is pulled out from the side end.

The stand 3 is formed of synthetic resin into a roughly shallow dish shape, and storage recesses 18 and 19 are formed at both longitudinal ends of the stand 3 in correspondence with the receiver section 4 and the transmitter section 6 of the telephone main body 2. has been done.

1 and 2, the structure of the lock switch 9 and the lock switch operating mechanism 10 will be described in detail. The lock switch 9 uses a well-known micro switch, and has a switch main body 9A and an actuator 9 consisting of a leaf spring.
B, and an actuator 9C operated by this actuator 9B, and the printed circuit board 8
It is inserted into the communication circuit by being installed in the. The printed circuit board 8 is fixed by set screws 21 onto a plurality of mounting portions 20 protruding from the inner surface of the lower case 2B.

The hook switch operating mechanism 10 is composed of a switch operating lever 25, the hook button 13, and a spring 26. The switch actuating lever 25 includes a cylindrical lever body 28 having fulcrum parts 27a and 27b integrally protruding from both end faces, a switch actuating part 29 and a cylindrical lever body 28 respectively protruding from the peripheral surface of the lever body 28 in the radial direction. Button drive unit 30
The fulcrum portions 27a, 27B are rotatably supported by bearing holes 33a, 33b of a pair of left and right support portions 31, 32 protruding from the inner surface of the lower case 2B. The switch operating section 29
is formed into a substantially J-shape, and its tip abuts against the actuator 9B of the microswitch 9, thereby forming a pressing portion 29a. The button drive unit 30 includes a set of two plate-like pieces 30A,
30B, and engagement protrusions 34a and 34b are provided protruding from the outer surface of the tip portion of each plate-like piece 30A and 30B, respectively. Then, the button driving section 30 is arranged at an appropriate angle (for example,
140°).

The hook button 13 has a shell structure that opens on the bottom surface, and the bottom surface has the respective engaging protrusions 34a,
A pair of connecting parts 35a, which 34B engages with, respectively.
35b, and a slip-off prevention rib 36 is integrally provided at the opening end of the outer peripheral surface and protrudes over the entire circumference. Each of the connecting portions 35a and 35b is formed into a substantially hook shape, and the hook operating lever 25 is inserted between the connecting portions 35a and 35b formed between the connecting portions 35a and 35b and the bottom surface of the hook button 13.
The respective engaging protrusions 34a and 34b are inserted and engaged from the side. The hook button 13 is inserted into a hook button guide hole 37 formed in the lower case 2B from the inside of the case 2B so as to be freely protrusive and retractable, and is urged by the spring 26 in a direction to protrude from the guide hole 37. One end of the spring 26 is inserted into the hook button 13 or pressed against the button driving portion 30 of the switch operating lever 25, and the other end is pressed against the inner surface of the upper case 2A.

In the hook switch operating mechanism 10 having such a structure, in the off-hook state, that is, when the telephone is in use, the hook button 13 is projected from the hook button guide hole 37 by the force of the spring 26, as shown in FIG. Hook button 1 at this time
3 from the guide hole 37 is prevented because the rib 36 of the hook button 13 abuts against the inner opening end surface of the hook button guide hole 37. When the hook button 13 protrudes, the switch operating lever 25
are the engaging protrusions 34a, 34b and the connecting parts 35a, 35.
b is rotated clockwise in FIG. 1 due to the engagement with the lever 25, whereby the switch actuating portion 29 of the lever 25 presses the actuator 9B of the micro switch 9 to elastically deform it upward, thereby closing the switch 9. . Therefore, it is set to a state where it can talk.

On the other hand, when the phone body 2 is placed on the stand 3 after the call and returned to the on-hook state, the hook button 13
hits the upper surface of the stand 3 and is pushed into the telephone main body 2 against the spring 26 by the weight of the handset 1.
Then, the switch operating lever 25 is rotated counterclockwise in conjunction with the hook button 13, releasing the microswitch 9 from its pressed state against the actuator 9B. Therefore, the actuator 9B rotates back due to its own elasticity and opens the micro switch 9, thereby opening the communication circuit.

This embodiment uses the micro switch 9 as described above.
Apply the spring force of actuator 9B to hook button 1.
Since the spring 26 is used to provide the return behavior without using it as the return force of step 3, there is no need to increase the spring force of the actuator 9B by special ordering, and a commercially available product can be used as is, and the spring 26 does not meet the specifications. By using a spring with matching spring force,
The return operation of the hook button 13 can be made stable and reliable.

[Effect of idea]

As explained above, according to the hook switch operating mechanism of the handset according to the present invention, a micro switch is used as a hook switch, and the hook button is pressed by a spring provided separately from the hook switch to impart a return habit. The hook button can be returned stably and reliably by being small and inexpensive, and since the switch operating lever is operated in conjunction with the button to control opening and closing of the micro switch, the operation of the switch is reliable.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a handset equipped with a hook switch operating mechanism according to the present invention, FIG. 2 is an exploded perspective view of the same mechanism, and FIG. 3 is a perspective view of the handset and a stand. 2...Phone body, 2A...Top case, 2B...
...lower case, 8...printed circuit board, 9...micro switch (foot switch), 9B...actuator, 10...foot switch operating mechanism, 1
3...Hook button, 25...Switch operating lever, 26...Spring, 29...Switch operating part, 3
0... Button drive section, 31, 32... Support section, 3
5a, 35b...Connecting portion, 37...Hook button guide hole.

Claims (1)

[Scope of utility model registration request] In a handset/receiver switch operation mechanism that uses a micro switch as a switch means,
A substantially central fulcrum portion is swingably supported by a printed circuit board mounted with the micro switch disposed within the telephone body and inserted into the communication circuit, and a support portion formed within the telephone body. , a switch operating lever having one end provided with a switch operating part that engages with the actuator of the microswitch and a button driving part provided at the other end; The telephone has a hook button provided with a connecting portion that engages with a button driving portion of the switch operating lever, and a spring that is incorporated into the telephone body and exposes the hook button to the outside from the hook button guide hole. A handset/receiver switch operating mechanism.