JPS6144277Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mechanism for attaching a pinch roller pressure lever in a VTR. First, an example of a conventional pinch roller pressure bonding mechanism will be described below. Fig. 1 is a plan view of the pinch roller crimping mechanism during loading, and Fig. 2 is a plan view of the same upon completion of loading. It is rotatably supported by support rollers 3, 3, 3. 4, 4, 4, 4,
Reference numeral 4 denotes a guide pin which is pivotally supported on the loading disk and loads the tape (not shown) on a predetermined tape path; 5 is a rotatable pinch roller support lever which is also pivotally supported on the loading disk 2; 6;
7 is a pinch roller placed on the pinch roller support lever, and 7 is a capstan to which the pinch roller is pressed. 8 is rotatably supported by a support shaft 9 on a metal chassis, and is always urged toward the loading disk 2 by a spring 10, and rotates counterclockwise when loading is completed to connect the pinch roller 6 and capstan 7.
A pinch roller pressure bonding lever 8a is provided at the rotating end of the pinch roller pressure bonding lever, and a roller 8b slides on the outer periphery of the loading disk 2 during loading, and enters into the notch 2a when loading is completed. This is a pressing piece that is similarly provided at the rotating end of the pinch roller pressure lever, and presses the loading completion detection switch 1 by the rotation of the pinch roller lever when loading is completed. Further, 12 is a stopper for fixing one end of the spring 10. Next, the operation of the above mechanism will be explained. First, when a play button (not shown) is operated from the stop mode, the loading disk 2 rotates counterclockwise as shown in FIG. During this loading, the roller 8a is pressed against the outer periphery of the loading disk 2 by the bias of the spring 10. Next, when the loading disk 2 is rotated to a predetermined position, the roller 8a enters the notch 2a on the outer periphery of the loading disk 2, so the pinch roller pressure lever 8 is rotated counterclockwise as shown in FIG. move. Due to this rotation, the pressing piece 8b of the pinch roller pressure bonding lever 8 presses the loading completion detection switch 11, turning on the switch and stopping the rotation of the loading disk 2, and the pinch roller pressure bonding lever 8 also presses the loading completion detection switch 11. The pinch roller pressing lever is rotated clockwise to press the pinch roller 6 to the capstan 7. In this state, loading is completed, and subsequently the tape (not shown) starts running at a predetermined speed and enters the play mode. The pinch roller crimping lever in the above-mentioned pinch roller crimping mechanism is installed as shown in Fig. 3.
Insert the pinch roller pressure bonding lever 8 , which has a spring 10 wound around the pipe 8c in advance, into the spindle 9, and as shown in FIG. In this state, one end of the spring 10 is hooked onto the stopper 12 to lock it. However, in the above method, in the state shown in FIG. 3, the spring 10 is in a released state and has both ends open at a wide angle, and is free with respect to the pipe 8c, so it is very difficult to handle it during installation. . This invention was made in view of the above points,
The present invention proposes a pinch roller crimping lever mounting mechanism that is extremely easy to handle when installing the pinch roller crimping lever and has good assembly workability. An embodiment of the present invention will be described below with reference to the drawings. The feature of this embodiment is that the pinch roller crimping lever 8 is provided with a locking piece 8d that locks one end of the spring 10. When installing, as shown in FIG. 5, one end of the spring 10 is locked in advance. Hang it on piece 8d and lock it. In this state, the spring 10 is temporarily fixed to the pinch roller pressure lever 8 . Then, as shown in FIG.
Pinch roller crimping lever 8 by simply changing it to 2.
installation is completed. In the above-described embodiment, the locking portion that locks the spring to the pinch roller crimping lever in advance is a locking piece, but one end of the spring is bent in advance and the locking hole provided in the pinch roller crimping lever is You may also insert it into As described above, according to the present invention, it is not only extremely easy to handle the pinch roller pressure lever before installation, but also the workability during installation is improved, which has great effects.

[Brief explanation of the drawing]

Figures 1 and 2 are plan views of the pinch roller crimping mechanism before and during crimping, respectively;
Fig. 3 is an exploded perspective view of a pinch roller crimping lever in a conventional example, Fig. 4 is a perspective view after the same is installed, Fig. 5 is an exploded perspective view of a pinch roller crimping lever in an embodiment of the present invention, and Fig. 6 is a perspective view after the same installation. Explanation of the main drawing numbers: 8 ... Pinch roller crimping lever, 8d... Locking piece, 9... Support shaft, 10... Spring, 12... Stopper.

Claims (1)

[Scope of utility model registration request] Attach the pinch roller crimping lever, which is pre-wound with a pinch roller crimping spring, to the spindle, and
In the pinch roller crimping lever mounting mechanism in which one end of the spring is locked to a stopper on the chassis, a locking portion that locks one end of the spring until the pinch roller crimping lever is attached is attached to the pinch roller crimping lever. A pinch roller crimping lever mounting mechanism is provided.