JPH0273899U - - Google Patents
Info
- Publication number
- JPH0273899U JPH0273899U JP12328688U JP12328688U JPH0273899U JP H0273899 U JPH0273899 U JP H0273899U JP 12328688 U JP12328688 U JP 12328688U JP 12328688 U JP12328688 U JP 12328688U JP H0273899 U JPH0273899 U JP H0273899U
- Authority
- JP
- Japan
- Prior art keywords
- piezoelectric vibrator
- air chamber
- back air
- handset
- chamber plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Piezo-Electric Transducers For Audible Bands (AREA)
- Telephone Set Structure (AREA)
Description
第１図は本考案の一実施例による電話用送受話
器の構造を示す断面図、第２図は本考案の一実施
例による電話用送受話器の受話器部分の拡大断面
図、第３図、第４図はそれぞれ本考案の他の実施
例による電話用送受話器の受話器部分の拡大断面
図、第５図は従来の電話用送受話器の構造を示す
断面図である。
６……上ケース、７……下ケース、８……入出
力コネクタ、９……送話器、１０……プリアンプ
、１１……受話器、１２……リング状突起、１３
……段部、１４……固定部、１５……放音孔、１
６……セラミツク圧電体、１７……金属板、１８
……背気室板、１９，１９ａ，１９ｂ……リード
線、２０……接触片、２１，２１ａ，２１ｂ……
小孔、２２……音響抵抗材、２３……緩衝材、２
４……固定金具、２５……ネジ、２６……ネジポ
スト、２７……切欠部、２８……段部凸部、２９
……回路基板、３０……嵌合用爪。
FIG. 1 is a sectional view showing the structure of a telephone handset according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the receiver portion of a telephone handset according to an embodiment of the present invention, FIGS. FIG. 4 is an enlarged cross-sectional view of the handset portion of a telephone handset according to another embodiment of the present invention, and FIG. 5 is a cross-sectional view showing the structure of a conventional telephone handset. 6... Upper case, 7... Lower case, 8... Input/output connector, 9... Transmitter, 10... Preamplifier, 11... Handset, 12... Ring-shaped protrusion, 13
...Stepped part, 14...Fixed part, 15...Sound emission hole, 1
6...Ceramic piezoelectric body, 17...Metal plate, 18
... Back air chamber plate, 19, 19a, 19b ... Lead wire, 20 ... Contact piece, 21, 21a, 21b ...
Small hole, 22...Acoustic resistance material, 23...Buffer material, 2
4... Fixing metal fitting, 25... Screw, 26... Screw post, 27... Notch, 28... Step convex part, 29
...Circuit board, 30...Mating claw.
Claims (1)
振動子と、前記圧電振動子への入出力手段と、前
記圧電振動子との間に空間を形成し、通気量を制
御する小孔を有する回路基板からなる背気室板と
を、ハンドセツトの下ケースの送話部・受話部の
少なくとも一方の内側底部に設けたリング状突起
の中段に形成した段部に挿入固定した電話用送受
話器。 A circuit board having a piezoelectric vibrator made of a ceramic piezoelectric material bonded to a metal plate, an input/output means for the piezoelectric vibrator, and a small hole for forming a space between the piezoelectric vibrator and controlling the amount of ventilation. A telephone handset in which a back air chamber plate consisting of a back air chamber plate is inserted and fixed into a stepped part formed in the middle of a ring-shaped projection provided at the inner bottom of at least one of the transmitting part and the receiving part of the lower case of the handset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12328688U JPH0273899U (en) | 1988-03-01 | 1988-09-20 |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2717188 | 1988-03-01 | ||
| JP9654688 | 1988-07-21 | ||
| JP12328688U JPH0273899U (en) | 1988-03-01 | 1988-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0273899U true JPH0273899U (en) | 1990-06-06 |
Family
ID=31721113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12328688U Pending JPH0273899U (en) | 1988-03-01 | 1988-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0273899U (en) |
-
1988
- 1988-09-20 JP JP12328688U patent/JPH0273899U/ja active Pending
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