JPH0629252U - Phone structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a waterproof telephone structure which is inexpensive and has excellent acoustic characteristics. [Structure] A waterproof base material film made of polyester or a thermoplastic elastomer having rubber elasticity is fixedly formed on an annular holding member having a hole at the center, and a waterproof member is arranged apart from the housing case and the acoustic unit. is doing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a telephone structure in which a waterproof member is provided for the purpose of imparting waterproofness to a cordless telephone or the like.

[0002]

[Prior art]

 When a conventional waterproof member of this type is used for waterproofing a cordless telephone or the like, as shown in FIG. 5, the acoustic unit 8 such as a transmitter, a receiver, and a sounder is installed inside the housing 5 with a fluorine. The waterproof film 4 made of a resin or the like was attached.

[0003]

[Problems to be solved by the device]

 However, with such a structure, an expensive fluorine-based resin film is used as a waterproof film, resulting in an expensive telephone set, and since it is attached to the housing, the sensitivity of acoustic characteristics is significantly reduced (4 dB or more). There were drawbacks such as. Further, since the above-mentioned fluororesin film generally has fine holes, it has a drawback that its resistance to infiltration of soapy water and the like is weak. Therefore, the conventional device described above has the drawbacks of being expensive and degrading the acoustic characteristics.

An object of the present invention is to eliminate the drawbacks of the related art and to provide a waterproof telephone structure which is inexpensive and has excellent acoustic characteristics.

In order to solve this problem, the telephone structure according to the present invention is a waterproof structure in which a waterproof base material film made of polyester or a thermoplastic elastomer having rubber elasticity is fixedly formed on an annular holding member having a hole in the center. It has a configuration in which the members are arranged apart from the housing case and the acoustic unit.

[0006]

[Action]

 With such a structure, an expensive film such as a fluorine-based resin is not used as the waterproof base film, and since there are no fine holes, soap water does not enter, and it is firmly formed on the annular holding member. Therefore, it is easy to handle in the assembly process. Further, since it is arranged away from the housing case and the acoustic unit, it is possible to exert effects such as excellent acoustic characteristics.

[0007]

【Example】

 FIG. 1 is an example of a waterproof member used in the present invention, in which 1 is a waterproof base film (hereinafter abbreviated as waterproof film) made of polyester film or thermoplastic elastomer having rubber elasticity, and 2 is polyester or ABS. A ring-shaped holding member made of resin or the like with a hole in the center, and forming a heat-sealing layer (not shown) on the waterproof film 1 for adhesion, or for melting and adhering part of one resin itself. It is fixedly formed.

FIG. 2 is another example of the waterproof member used in the present invention, in which 1 is a waterproof film, 2 is a ring-shaped holding member, and a means such as a double-sided adhesive tape is used as a means for fixing and forming them. The layer 3 is inserted.

FIG. 3 is a cross-sectional view of a waterproof structure as an embodiment of the present invention, in which a waterproof member having a waterproof film 1 and a ring-shaped holding member 2 fixed to each other is transferred to a housing case 5 having a sound hole 6. It is arranged between the audio unit 8 such as a speaker. The waterproof film 1 is sandwiched between a housing case 5 and an elastic annular member 7, and one end of the annular member 7 is sandwiched by an acoustic unit 8 fixed by means not shown. Has become.

In such a structure, since the waterproof film 1 does not have fine holes unlike the conventional fluorine-based resin, it is possible to prevent the intrusion of soapy water and the like, and separate it from the housing case 5 and the acoustic unit 8. Since it is installed, it became a waterproof member with excellent acoustic characteristics. Further, as the waterproof film 1, a thermoplastic film (trade name: Labraze Tonen Kagaku) having a polyester film of 25 μm or less and a rubber-like elasticity of 20 μm or less is preferable, and the waterproof film 1 having a thickness of 250 μm or more is used. Since it is fixedly formed on the ring-shaped holding member 2 made of existing polyester film or ABS resin, the material is inexpensive, and the assembly process is a simple method of inserting the waterproof member, so that an inexpensive waterproof structure is provided. I was able to.

When the acoustic unit 8 in FIG. 3 is a receiver, the outside of the sound hole 6 touches the ear, but in this case, it may be brought into close contact with the ear depending on the person. At this time, the vibrating portion 1a of the waterproof film 1 is convex toward the acoustic unit 8 side. When the waterproof film 1 is suddenly released from the ears after being tightly attached to the ears, the waterproof film 1 has a convex shape to the housing case 5 side. Adhesion to and separation from the ear on the handset side is an everyday activity that occurs frequently. If the waterproof film 1 is a polyester film, it will enter the ear as vibration noise of the waterproof film, and the receiving sound will be heard. It becomes difficult to hear. In this respect, a thermoplastic elastomer having rubber elasticity is characterized in that this vibration cannot be heard as noise, and at least at the part of the receiver on the acoustic unit 8, the thermoplastic elastomer having rubber elasticity is applied as the waterproof film 1. Was needed.

FIG. 4 is a schematic view of a telephone structure provided with a waterproof member according to the present invention, in which 8a indicates a receiver, 8b indicates a transmitter, and 8c indicates a sounder, each acoustic unit and a housing case. The waterproof films 1a, 1b, 1c are disposed between the waterproof film 1 and the waterproof film 5. Here, it is shown that a thermoplastic elastomer having rubber elasticity is used for at least the waterproof film 1a.

[0013]

[Effect of device]

 As described in detail above, the present invention uses a film that also withstands soapy water as a waterproof film, and has a structure in which it is arranged away from the acoustic unit and the housing case, and thus it is highly waterproof. There is an advantage in providing a waterproof telephone that is inexpensive and has excellent acoustic characteristics.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a waterproof member used in the present invention.

FIG. 2 is a cross-sectional view showing another example of the waterproof member used in the present invention.

FIG. 3 is a cross-sectional view of a waterproof structure of an audio unit according to an embodiment of the present invention.

FIG. 4 is a sectional view showing an embodiment of the present invention.

FIG. 5 is a cross-sectional view of a conventional waterproof structure for an acoustic unit.

[Explanation of symbols]

 1, 1a, 1b, 1c Waterproof film 2 Annular holding member 3 Adhesive layer 4 Waterproof film 5 Housing case 6 Sound hole 7 Annular member 8 Acoustic unit 8a Receiver 8b Transmitter 8c Sounder

Claims (2)

[Scope of utility model registration request] 1. A telephone structure in which a waterproof member in which a waterproof base film is fixedly formed on an annular holding member having a hole in the center is disposed apart from a housing case and an acoustic unit. 2. The telephone structure according to claim 1, wherein as the waterproof base film, a resin film made of a thermoplastic elastomer having rubber elasticity is used for at least a handset portion of the acoustic unit. .