JPH046285Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the structure of a handset and receiver, and particularly relates to an improvement in the joint structure of a handset and receiver case formed in two parts and integrally joined.

[Conventional technology]

Traditionally, the handset case of a handset is made of synthetic resin and consists of an upper case and a lower case, which are formed into two parts and are integrally connected by a connecting means such as a set screw or an engagement piece. One longitudinal end of the telephone constitutes a transmitting part that houses a microphone, the other end constitutes a receiving part that houses a speaker, and the central part constitutes a grip, and in the case of a one-piece telephone, a voice can be heard within the grip. It incorporates a circuit, a control circuit board, a dial button, a ringer volume switch, a receiver volume switch, a hook switch, etc. As seen in Japanese Utility Model Publication No. 62-16050, the coupling structure between the upper case and the lower case is such that both ends in the longitudinal direction are generally coupled by an engaging portion and an engaging piece provided inside the upper case and the grip. The centers of the parts are joined by a set screw. Therefore, a screw hole is formed on the inner surface of the grip portion of the upper case, and a screw mounting hole is formed on the surface of the grip portion of the lower case in correspondence with the screw hole.

[Problem that the invention attempts to solve]

However, in the past, it was necessary to hide the setscrew in order to maintain its appearance, which resulted in the problem of an increase in the number of parts needed to hide it. Also,
Conventionally, a single set screw is used, and if the set screw is provided at a position offset from the widthwise center of the grip, the handset case will be twisted and loose. Therefore, it must be installed in the center of the grip, but as mentioned above, in the case of one-piece telephones, various electrical components are housed inside the grip, so these parts get in the way, so it is not necessary to install it in the center of the grip. It may not be possible.

Therefore, the present invention aims to solve the above-mentioned problems and provide a handset structure that can reduce the number of parts and reliably prevent twisting and rattling of the handset case.

[Means for solving problems]

In order to achieve the above object, the present invention consists of an upper case and a lower case that are formed into two parts and are integrally connected by a set screw. In this handset, a pair of switch guide holes are formed on the surface of the grip portion of the lower case and are long in the width direction, and screw mounting holes are formed in the bottoms of these two guide holes, respectively, so that they are widthwise apart from each other. forming screw holes in the inner surface of the upper case corresponding to the screw mounting holes of each of the guide holes, and inserting the set screws into each of the screw mounting holes. The upper case and the lower case are integrally connected by screwing into corresponding screw holes, and switch knobs are slidably disposed in each of the switch guide holes to cover the setscrews.

[Effect]

In the present invention, the switch knob also serves as a concealing member for the set screw. Further, since the two setscrews are attached to opposite sides of the grip portion in a shifted manner from each other, the entire grip portion is connected with equal force on both sides, as if the center of the grip portion was fixed substantially.

〔Example〕

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

1 is an enlarged cross-sectional view taken from FIG. 4 showing an embodiment of the handset according to the present invention, FIG. 2 is an enlarged cross-sectional view taken from FIG. 4, and FIG. 3 is a partially cutaway front view of the handset. , FIG. 4 is a bottom view of the main part of the grip. In these figures, reference numeral 1 denotes a handset having a handset case 2 that has an external shape similar to that of a square handset of a general telephone, and a one-piece telephone set together with a stand (not shown) on which the handset 1 is placed. It consists of

The handset/receiver case 2 has an upper case 3 which is formed into two parts made of synthetic resin and integrally joined.
and a lower case 4, the lower case 4
A receiver part 6 with a built-in telephone receiver 5 is integrally provided on one inner surface in the longitudinal direction, and a transmitter part 8 with a built-in transmitter 7 is integrally provided on the other inner surface in the longitudinal direction. In addition, sound holes 16 and 1 are provided on the surfaces of the receiver section 6 and the transmitter section 8.
7 are provided respectively, and a machine string 18 is led out from the side end of the transmitter section 8. The part between the receiving part 6 and the transmitting part 8 constitutes a grip part 9, and inside thereof there is a printed circuit board 10 forming a communication circuit network and a control circuit network, a switch, and a switch operating mechanism (none of which is shown in the figure). ), ringer volume switch 11, receiver volume switch 12
The inner surface 13 is provided with a ringer volume changeover switch knob 14, a reception volume changeover switch knob 15, a dial button (not shown) for a dial mechanism, and the like. The changeover switches 11 and 12 are mounted on the printed circuit board 10, respectively.

Both ends of the upper case 3 and the lower case 4 are integrally formed by engagement between engaging pieces 19, 20 and engaging portions 21, 22, which are respectively protruded from the inner surfaces of both ends in the longitudinal direction of the upper case 3 and the lower case 4. They are connected and the intermediate portion is fixed by two setscrews 23 and 24, which will be described later. Two guide holes 25 and 26, which are long in the width direction, are recessed at appropriate locations on the surface of the grip portion 9 of the lower case 4, corresponding to the ringer volume changeover switch 11 and the reception volume changeover switch 12, respectively. These guide holes 25, 2
6 are formed in parallel in the longitudinal direction of the lower case 4, and are connected to the ringer volume changeover switch knob 14.
and a knob 15 for a voice volume changeover switch are inserted and arranged so as to be slidable in the longitudinal direction of the guide holes 25 and 26, in other words, in the width direction of the grip portion 9, respectively. These knobs 14 and 15 fit the switch 1 into fitting holes 28 and 29 provided on their inner surfaces.
By fitting the operating pieces 11A and 12A, respectively, they are connected to the switches 11 and 12, and when the knobs 14 and 15 are slid left and right, the operating pieces 11A and 12A are connected to the switches 11 and 12, respectively. is configured so that the resistance of the switches 11 and 12 changes as the switch 11 and 12 move, thereby switching the volume of the ringing tone and the receiving tone.

A recess 3 is provided at the bottom of each guide hole 25, 26.
0 and 31 are respectively shifted and recessed on opposite sides of the hole in the longitudinal direction. That is, the recessed portion 30 is located from the center of the grip portion 9 in the width direction to the first portion of the guide hole 25.
The recessed portion 3
1 is provided on the right side of the guide hole 26 in FIG. Screw mounting holes 32, 33 into which the set screws 23, 24 are inserted are formed in the center of the bottom surface of each recess 30, 31, and the hot springs are formed in correspondence with these screw mounting holes 32, 33. The inner surface of the grip part of the par case 3 has a screw hole 35 in the center.
Screw attachment portions 37 and 38 having 36 formed thereon are integrally provided in a protruding manner. The aforementioned engaging pieces 19 and 20 connect both longitudinal ends of the upper case 3 and the lower case 4.
When connected by the engaging portions 21 and 22, the bottom portions 40 and 41 of the respective recesses 30 and 31 come into contact with the tip surfaces of the respective screw attachment portions 37 and 38, and the set screws 23 and
24 into the screw holes 35 and 36, respectively, the grip portions of the upper case 3 and the lower case 4 are integrally connected.

In this case, the setscrews 23 and 24 inserted into the respective recesses 30 and 31 are covered by the knobs 14 and 15, so that they are not visible from the outside and the appearance of the handset 1 is not impaired. Also, knob 1
4 and 15 also serve as blinding members for the setscrews 23 and 24, thereby making it possible to reduce the number of parts. Furthermore, the guide holes 25 and 26 are provided close to each other, and the screw mounting holes 32 and 33 are provided at the bottom of the guide holes 32 and 33, respectively, shifted approximately the same distance from the center in the width direction to the opposite side, so that the upper case 3 and the lower case 4 are It does not twist and can prevent rattling, and is particularly effective when the center in the width direction cannot be fixed with screws due to the relationship with internal components.

In addition, in the above embodiment, the ringing volume changeover switch 11
Although an example is shown in which the present invention is applied to the knobs 14 and 15 of the earphone volume changeover switch 12, the present invention is not limited to these in any way, and can also be applied to the knobs of a tone changeover switch, a hook switch, etc. be.

[Effect of idea]

As explained above, according to the structure of the handset according to the present invention, the set screw that integrally connects and fixes the grips of the upper case and the lower case is covered by the switch knob. There is no need to specially install blind parts, making it possible to reduce the number of parts. In addition, two setscrews are used, and these are moved from the center of the grip to the opposite side in the width direction and screwed into the screw hole on the upper case from the screw mounting hole on the lower case.
Both sides of the grip portion in the width direction can be connected with substantially equal force, and twisting of the handset case can be reliably prevented. Therefore, there is no wobbling.

[Brief explanation of the drawing]

1 is an enlarged cross-sectional view taken from FIG. 4 showing an embodiment of the handset according to the present invention, FIG. 2 is an enlarged cross-sectional view taken from FIG. 4, and FIG. 3 is a partially cutaway front view of the handset. , FIG. 4 is a bottom view of the main part of the grip. 1...Handset, 2...Handset case, 3...
Upper case, 4... Lower case, 6... Receiving part, 8... Transmitting part, 9... Grip part, 11... Ringer volume selector switch, 12... Receiver volume selector switch, 14, 15... Knob , 19, 20... Engaging piece, 21, 22... Engaging portion, 23, 24... Set screw, 25, 26... Guide hole, 32, 33...
Screw mounting holes, 35, 36...screw holes.

Claims (1)

[Scope of utility model registration request] The transmitter/receiver case is composed of an upper case and a lower case that are formed in two parts and are integrally connected by a set screw, and has a transmitting part and a receiving part at both ends in the longitudinal direction, and a grip part in the central part. In the handset, a pair of switch guide holes which are long in the width direction are formed on the surface of the grip portion of the lower case, and screw mounting holes are provided in the bottoms of these guide holes, respectively, and are shifted to opposite sides in the width direction, and Screw holes are formed in the inner surface of the upper case in correspondence with the screw mounting holes of each of the guide holes, and the setscrews are inserted into each of the screw mounting holes and screwed into the corresponding screw holes. 1. A structure of a handset, characterized in that a par case and a lower case are integrally connected, and a switch knob is slidably disposed in each of the switch guide holes to cover the set screw.