JPS58141448U

JPS58141448U - Muting device

Info

Publication number: JPS58141448U
Application number: JP4006182U
Authority: JP
Inventors: 正植木
Original assignee: 株式会社富士通ゼネラル
Priority date: 1982-03-19
Filing date: 1982-03-19
Publication date: 1983-09-22

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

図面は本考案の一実施例に係り、第１図はミューティン
グ回路の構成図、第２図は同上回路における動作につい
てのタイムチャートを示す図、第３図はソフトブツシュ
メカの機構関係を示す斜視図、第４図は同上機構の側面
図、第５図は同上機構における要部断面図である。同図中、Ｓｌはモータスイッチ、Ｓ２はモータ起動用ス
イッチ、Ｓ３はミューティング用スイッチ、ＴＲはミュ
ーティング用トランジスタ、Ｍはモータ、１はソフトブ
ツシュメカ、２はブツシュボタン群、４は支持杆群、７
は係止板。０．５秒第５図The drawings relate to an embodiment of the present invention, and FIG. 1 is a configuration diagram of a muting circuit, FIG. 2 is a diagram showing a time chart regarding the operation of the same circuit, and FIG. 3 is a diagram showing the mechanical relationship of the soft button mechanism. FIG. 4 is a side view of the above mechanism, and FIG. 5 is a sectional view of a main part of the above mechanism. In the figure, SL is a motor switch, S2 is a motor starting switch, S3 is a muting switch, TR is a muting transistor, M is a motor, 1 is a soft button mechanism, 2 is a button group, and 4 is a button group. Support rod group, 7
is a locking plate. 0.5 seconds Figure 5

Claims

[Scope of utility model registration request]

(1) In a recording/reproducing device that uses a soft button mechanism and controls the drive system in response to the operation of the soft button mechanism, the motor is inserted between the DC current and the motor and connected in parallel. A motor circuit consisting of a starting switch and a motor switch, a muting transistor connected to the audio signal path, and a diode inserted between the motor circuit and the base of the muting transistor and connected to the base through a diode. It is equipped with a means for supplying DC power and a muting circuit consisting of a muting switch inserted between the diode and the muting transistor, and starts the motor in response to the initial operation by the soft bushing mechanism. The muting switch is momentarily turned on to put the motor in a rotating state, while the muting switch is turned off to put the muting transistor into a driving state, and the operation of the soft button mechanism is locked at the end operation. Muting characterized in that the motor switch is turned ON, the motor starting switch is turned OFF, and the muting switch is turned ON again to put the muting transistor in a non-driving state. Device.

(2) The soft button mechanism includes a group of buttons, a support rod fixed to the button group, a locking piece attached to the support rod, and a through hole corresponding to the locking piece. 2. The muting device according to claim 1, further comprising a locking plate having a bent portion at its upper end.

(3) Registration of a utility model characterized in that the motor starting switch is located at one end of the locking plate, and the muting switch is located at the other end, on opposite sides of the plate. A muting device according to claim 1 or 2.

(4) The muting device according to claim 1 or 2, wherein the motor switch is disposed below the support rod.