JPH0722922Y2 - Handset holding case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an internal structure of a receiver housing portion of a telephone, and in particular, a receiver holding housing with improved efficiency of assembly work of the receiver and improved acoustic characteristics. Regarding

[Prior Art] Conventionally, this type of receiver holding housing has been shown in FIGS. 3 and 4.

That is, the receiver housing 1 is provided with a boss 1a and a rib 2 forming the front air chamber 2a of the receiver on the surface thereof in the same cylindrical shape,
In addition, the rib 2 had a receiver sound hole 2b.

Further, 3 is a holding member for holding the handset main body 4. The holding member 3 has a cylindrical elastic body 3a and a skirt-shaped rising portion 3b provided on the upper portion of the elastic body 3a, and a fitting hole 6a of the printed wiring board 6 is fitted to the tip of the rising portion 3b. A fitting portion 3c having a possible groove is provided.

On the other hand, below the holding member 3, the cylindrical rib 2 is provided.
There is provided a flange portion 3d which comes into contact with the upper surface portion of and which forms the opening of the holding member 3.

Further, a through hole 3e for inserting the wire 5 of the handset main body 4 is provided in the central portion of the holding member 3.

Therefore, according to the handset holding casing having such a configuration, first, the wiring 5 is connected to the terminal portion 4a of the handset main body 4. Then, the connected wiring 5 is inserted into the through hole 3e of the holding member 3, and the handset main body 4 is inserted and fixed inside the holding member 3.

Next, the fitting portion 3c of the holding member 3 is fitted into the fitting hole 6a of the printed wiring board 6.
To fit. In this state, the flange portion 3c of the holding member 3
Is positioned so as to come to the tip of the cylinder of the rib 2, and the predetermined boss 1a is fixed by the screw 7.

In this state, the rising portion 3b of the holding member 3 bends to press the handset main body 4, and the flange portion 3d contacts and presses the tip portion of the rib 2 to press the flange portion 3d.
It had a structure in which it was bent and closely fixed.

[Problems to be Solved] The above-described conventional receiver holding housing has the following three drawbacks.

First, in the conventional handset holding housing, the handset is configured by pressing the flange portion 3d provided on the holding member 3 against the tip of the rib 2. Therefore, the contact point between the flange portion 3d and the rib 2 is set at the handset main body 4 in consideration of the balance in which the holding member 3 is pressed and fixed, or in consideration of the deviation at the time of assembling the handset.
It was necessary to set it to some extent inside the outer shape. Therefore, the insertion of the handset main body 4 into the holding member 3 is troublesome, and the assembling workability is poor.

Secondly, when the conventional holding member 3 is molded, the holding member 3 is forcibly taken out from the opening of the molded holding member after injecting rubber into the mold to form the mold. The flange portion 3d was damaged and the yield was poor.

Thirdly, as a space for satisfying the acoustic characteristics of the handset, the front air chamber 2a was formed between the handset main body 4 and the handset sound hole 2b, but this front air chamber 2a is almost unnecessary. There is also. However, in the conventional structure, the space formation due to the contact between the rib 2 and the flange portion 3d becomes unnecessarily large. Therefore, when the front air chamber is hardly required, the normal acoustic characteristics cannot be obtained. There was a flaw.

The present invention has been made in consideration of the above-mentioned problems,
An object of the present invention is to provide a handset holding housing that facilitates the assembling work, ensures the holding member molding work, and obtains sufficient acoustic characteristics without being restricted by the difference in the volume of the front air chamber.

[Means for Solving the Problems] In order to achieve the above object, the receiver holding housing of the present invention is
In a telephone set including a handset housing, a rib provided inside the handset housing, a handset body, a holding member for holding the handset body, and a printed wiring board, the width of the holding member relative to the peripheral edge of the opening is relatively large. A narrow flange portion is provided, and a protrusion for pressing the receiver housing is formed below the flange portion, and the rib has a diameter smaller than the inner diameter of the flange protrusion of the holding member, In addition, it is formed to be relatively low, and at the time of assembly, the projection of the flange portion comes into contact with the handset housing to bring the flange into close contact with the handset housing, and the tip of the rib directly contacts the handset body. It is configured to do so.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of a receiver holding housing according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a mounted state of FIG. In addition, in the same parts as shown in FIG. 3 and FIG.
The same reference numerals are given and detailed description thereof will be omitted.

In the drawings, the holding member 3 that holds the handset main body 4 is
A flange portion 3d that forms an opening is provided below. The flange portion 3d is narrower than the conventional flange portion, and a projection 3f for pressing the handset housing 1 is provided below the flange portion 3d.

Correspondingly, the rib 2 of this embodiment also has a lower cylindrical portion than the conventional rib.

When the handset holding housing having such a structure is assembled, the rising portion 3b of the holding member 3 bends to press the handset housing 4, and the tip of the rib 2 provided on the handset housing 1 becomes
It directly contacts the handset body 4. At this time, the protrusions 3f provided below the flange portion 3d are further pressed on the outside of the rib 2 by coming into contact with the handset housing 1 to press the flange portion 3d.
The 3d and the receiver housing 1 are in close contact with each other to keep the front air chamber 2a airtight.

[Effects of the Invention] As described above, according to the present invention, the length of the flange portion provided below the holding member can be set to a necessary minimum, so that the assembly work such as insertion of the handset main body can be easily performed.
Further, there is an effect that breakage at the time of molding using a mold can be eliminated and yield can be improved.

Furthermore, by setting the ribs provided on the receiver housing to the minimum height, it is possible to deal with receivers that do not need the anterior chamber and obtain sufficient acoustic characteristics.

[Brief description of drawings]

1 is an exploded perspective view of a receiver holding housing according to an embodiment of the present invention, FIG. 2 is a sectional view showing a mounted state of FIG. 1, and FIG.
FIG. 4 is an exploded perspective view of a conventional handset holding housing, and FIG.
It is sectional drawing which shows the mounting state of a figure. 1; receiver housing, 2; rib 3; holding member, 3a; elastic body 3b; rising portion, 3c; fitting portion 3d; flange portion, 3e; through hole 3f; protrusion, 4; receiver body

Claims (1)

[Scope of utility model registration request] 1. A telephone set comprising a handset housing, a rib provided inside the handset housing, a handset body, a holding member for holding the handset body, and a printed wiring board, wherein a peripheral edge of an opening of the holding member is provided. Is provided with a relatively narrow flange portion, and a protrusion for pressing the receiver casing is formed below the flange portion, and the rib is smaller than the inner diameter of the flange protrusion of the holding member. It has a diameter and is relatively low, and during assembly, the projection of the flange portion comes into contact with the handset housing to bring the flange into close contact with the handset housing, and the tip of the rib is A handset holding case characterized by being in direct contact with the body of the handset.