JPH01113844U

JPH01113844U -

Info

Publication number: JPH01113844U
Application number: JP895288U
Authority: JP
Priority date: 1988-01-27
Filing date: 1988-01-27
Publication date: 1989-07-31
Anticipated expiration: 2003-01-27
Also published as: JPH0648593Y2

Description

[Brief explanation of the drawing]

第１図ないし第９図は本考案の第１の実施例を
示すもので、第１図ないし第４図は回転伝達経路
を示す平面図、第５図及び第６図は摩擦伝達機構
の周辺を示す分解斜視図及び縦断面図、第７図は
カセツトホルダ周辺を示す分解斜視図、第８図及
び第９図はカセツトホルダとイジエクトレバーと
の関係を示す側面図、第１０図は本考案の第２の
実施例における摩擦伝達機構の周辺を示す分解斜
視図、第１１図は本考案の第３の実施例における
摩擦伝達機構の周辺を示す縦断面図、第１２図は
従来例を示す回転伝達経路の平面図である。２１……モータ、２７……クラツチギヤ（第１
の回転板）、２８……低トルク伝達ギヤ、２９…
…高トルク伝達ギヤ、３３……定速回転伝達用ア
イドラ、３４……高速回転伝達用アイドラ、４８
……コイルスプリング（第１のばね部材）、４９
……三脚板ばね（第２のばね部材）、５１……第
１の摩擦伝達機構、５２……第２の摩擦伝達機構
、６８ａ，６８ｂ……リール受け。 Figures 1 to 9 show the first embodiment of the present invention, Figures 1 to 4 are plan views showing the rotation transmission path, and Figures 5 and 6 are the surroundings of the friction transmission mechanism. FIG. 7 is an exploded perspective view showing the cassette holder and its surroundings, FIGS. 8 and 9 are side views showing the relationship between the cassette holder and the eject lever, and FIG. 10 is an exploded perspective view showing the cassette holder. FIG. 11 is an exploded perspective view showing the vicinity of the friction transmission mechanism in the second embodiment of the invention, FIG. 11 is a vertical sectional view showing the vicinity of the friction transmission mechanism in the third embodiment of the invention, and FIG. 12 is a conventional example. It is a top view of the rotation transmission path shown. 21...Motor, 27...Clutch gear (first
rotating plate), 28...low torque transmission gear, 29...
... High torque transmission gear, 33 ... Idler for constant speed rotation transmission, 34 ... Idler for high speed rotation transmission, 48
...Coil spring (first spring member), 49
...Tripod leaf spring (second spring member), 51...First friction transmission mechanism, 52...Second friction transmission mechanism, 68a, 68b...Reel receiver.

Claims

[Claims for Utility Model Registration] (1) The rotational force of the motor can be selectively transmitted to a pair of reel receivers at a predetermined speed, and the rotational force of the motor can be selectively transmitted to a pair of reel receivers at a higher speed. In the tape drive device, the rotational force of the motor is transmitted to the first rotary plate by arranging first, second, and third rotary plates coaxially, and the rotational force of the motor is transmitted to the first rotary plate. to the second and third rotary plates, respectively, through first and second friction transmission mechanisms having different rotational transmission forces, thereby making the rotational forces of the second and third rotary plates different. The rotational force of the second rotary plate, which has a smaller rotational force, can be selectively transmitted to the pair of reel receivers via the low-speed rotation transmission idler, and the rotational force of the third rotary plate, which has a larger rotational force, can be selectively transmitted to the pair of reel receivers via the low-speed rotation transmission idler. A tape drive device characterized in that rotational force can be selectively transmitted to a pair of reel receivers via an idler for high-speed rotation transmission. (2) The first friction transmission mechanism is configured to apply contact resistance to the second rotary plate by a first spring member having an axial spring force; The second spring member, which has a limited rotation range relative to the rotary plate, is connected to the third spring member.
2. The tape drive device according to claim 1, wherein the tape drive device is configured to apply contact resistance to the third rotating body by pressing it in the radial direction against the rotating plate. (3) The second friction transmission mechanism accommodates a substantially annular second spring member in an annular groove provided in the third rotary plate, and places the second spring member inside the annular groove. The tape drive device according to claim 2, which is a utility model, and is configured to be brought into pressure contact with the inner wall and the outer circumferential wall of the tape drive device. (4) The first rotating plate and the shaft are integrally formed,
Second and third rotary plates are rotatably mounted on the shaft on both sides of the first rotary plate, respectively, and the first and second friction transmission mechanisms are connected to the second and third rotary plates. The tape drive device according to claim 1, wherein the tape drive device is configured to be pressed in the axial direction against the first rotary plate by the first and second spring members, respectively.