JPH0448755U - - Google Patents
Info
- Publication number
- JPH0448755U JPH0448755U JP9034690U JP9034690U JPH0448755U JP H0448755 U JPH0448755 U JP H0448755U JP 9034690 U JP9034690 U JP 9034690U JP 9034690 U JP9034690 U JP 9034690U JP H0448755 U JPH0448755 U JP H0448755U
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- attached
- speaker
- intercom slave
- slave device
- 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
- 230000002265 prevention Effects 0.000 claims description 6
- 239000011358 absorbing material Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
Landscapes
- Telephone Set Structure (AREA)
Description
第１図は第１の本考案に係るハウリング防止構
造の一実施例図、第２図は第２の本考案に係るハ
ウリング防止構造の一実施例図、第３図は第３の
本考案に係るハウリング防止構造の一実施例図、
第４図はスピーカの裏面に取り付けられる吸音材
の説明図、第５図、第６図は従来のドアホン子器
の構造説明図である。
符号の説明、１……ドアホン子器本体カバー、
１ｂ，１ｂ′……凹所、２……マイク本体、３…
…弾性キヤツプ、３Ａ……マイクブロツク、４…
…防水ポリエチレンシート、５……フイルタ、６
……弾性介装体、８……スピーカ、９……吸音材
。
Fig. 1 is an embodiment of the howling prevention structure according to the first invention, Fig. 2 is an embodiment of the howling prevention structure according to the second invention, and Fig. 3 is the embodiment of the howling prevention structure according to the second invention. An example diagram of such a howling prevention structure,
FIG. 4 is an explanatory diagram of a sound absorbing material attached to the back surface of a speaker, and FIGS. 5 and 6 are explanatory diagrams of the structure of a conventional door intercom sub unit. Explanation of codes, 1... Door phone slave body cover,
1b, 1b'... recess, 2... microphone body, 3...
...Elastic cap, 3A...Microphone block, 4...
...Waterproof polyethylene sheet, 5...Filter, 6
...Elastic intervening body, 8...Speaker, 9...Sound absorbing material.
Claims (1)
形成した凹所に、フイルタを取り付けた弾性キヤ
ツプをマイク本体に被せて構成されたマイクブロ
ツクを嵌入して取り付けた構造としたドアホン子
器において、 上記凹所には開口端に向かつて漸次拡大する開
口部を形成するとともに、上記マイクブロツクを
構成する弾性キヤツプの先端部分を上記開口部に
応じたテーパ形状に形成し、上記開口部に気密的
に嵌入される構造としたドアホン子器のハウリン
グ防止構造。 ２ スピーカを内蔵した本体カバー内面に形成さ
れた凹所に、フイルタを取り付けた弾性キヤツプ
をマイク本体に被せて構成されたマイクブロツク
を嵌入して取り付けた構造としたドアホン子器に
おいて、 上記凹所には、ゴムスポンジなどの弾性介装体
を気密的に挟み込んでから、マイクブロツクを嵌
入させた構造としたドアホン子器のハウリング防
止構造。 ３ スピーカを内蔵した本体カバー内面に形成さ
れた凹所に、フイルタを取り付けた弾性キヤツプ
をマイク本体に被せて構成されたマイクブロツク
を嵌入して取り付けた構造としたドアホン子器に
おいて、 上記スピーカの裏面には、スポンジなどの吸音
材を取り付けた構造にしたドアホン子器のハウリ
ング防止構造。[Scope of Claim for Utility Model Registration] 1. A structure in which a microphone block consisting of an elastic cap with a filter attached to the microphone body is inserted and attached to a recess formed protruding from the inner surface of the main body cover containing a built-in speaker. In the intercom slave device, an opening is formed in the recess that gradually expands toward the opening end, and the tip of the elastic cap constituting the microphone block is formed into a tapered shape corresponding to the opening, and Howling prevention structure of the door intercom slave device that is fitted airtightly into the opening. 2. In a door intercom slave unit that has a structure in which a microphone block consisting of an elastic cap with a filter attached to the microphone body is inserted and attached to a recess formed on the inner surface of the main body cover containing a built-in speaker, the above-mentioned recess This is a howling prevention structure for a door intercom slave device in which a microphone block is inserted after an elastic intervening body such as a rubber sponge is sandwiched airtightly. 3. In a door intercom slave device that has a structure in which a microphone block, which is constructed by covering the microphone body with an elastic cap with a filter attached, is fitted into a recess formed on the inner surface of the main body cover containing a built-in speaker, the above-mentioned speaker The back of the doorphone slave unit has a structure that prevents howling, with a sound-absorbing material such as sponge attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9034690U JPH0448755U (en) | 1990-08-28 | 1990-08-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9034690U JPH0448755U (en) | 1990-08-28 | 1990-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0448755U true JPH0448755U (en) | 1992-04-24 |
Family
ID=31825018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9034690U Pending JPH0448755U (en) | 1990-08-28 | 1990-08-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448755U (en) |
-
1990
- 1990-08-28 JP JP9034690U patent/JPH0448755U/ja active Pending
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