JPS637550A - Pinch roller crimping device - Google Patents

Abstract

PURPOSE:To obtain a pinch roller thrusting device having compact constitution, by providing a guide member which regulates the locus of a pinch roller through a pinch roller holder, or an arm mounted on the pinch roller holder, on a first chassis. CONSTITUTION:A pinch roller 10 approaches to a capstan shaft 14 being regulated by a guide 13 through a pinch roller holder 3, and a pinch roller trusting arm 15, as a first chassis 1 approaches to a second chassis 2. At this time, the pinch roller 10 can evade interference by a post boat 19, and a guide post 12 by providing an appropriate guide. Also, as the pinch roller 10 approaches to the capstan shaft 14, the pinch roller thrusting arm 15 also turns following up the pinch roller 10, and presses the pinch roller 8, thereby, the pinch roller 10 is thrusting at the capstan shaft 14. In this way, it is possible to easily perform the thrusting of the pinch roller with good timing, and the positioning of the pinch roller at time of thrusting.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pinch roller crimping device that is effective for use in magnetic recording and reproducing devices such as video tape recorders.

Prior Art Figure 4 shows a plan view of a conventional pinch roller crimping device for a magnetic recording/reproducing device in which the cylinder is mounted on a separate chassis in order to downsize the magnetic recording/reproducing device, and the cylinder enters the cassette side during loading. show. In the figure, 1 is the first chassis with the cylinder attached;
Reference numeral 2 denotes a second rod having driving members such as a capstan and a reel stand. 3 is a capstan shaft, 4 is a pinch roller, and 5 is a pinch roller holder rotatably supported by the second chassis 2, which rotatably holds the pinch roller 4. 6 is the pinch roller holder shaft, 7 is the second
This is a guide post that is slidably attached to a guide provided on the chassis 2 of.

8 is a cylinder with a built-in rotating magnetic head; 9 is a cylinder ring for winding the magnetic tape around the cylinder 8;
0 is a tape winding boat slidably attached to the cylinder ring 9, and 11 is a guide.

In the conventional pinch roller pressurizing device configured as described above, the pinch roller 4 is attached to the capstan shaft 3 while taking a rotation locus about the pinch roller holder shaft 6 via the via f a-ra holder 5. They approach and are crimped.

Problems to be Solved by the Invention However, in the configuration shown in FIG. 4 as described above, if the guide 11 to which the guide post 7 is slidably attached is provided at a position close to the capstan side, when loading the tape, The pinch roller 4 comes into contact with the guide post 7. Further, if the guide 11 is provided at a position close to the cylinder 8 side, the pinch roller 4 will come into contact with the boat 10 attached to the cylinder ring 9 during loading.

In order to avoid the interference between the pinch roller and other members as described above, it is conceivable to increase the distance between the cylinder and the capstan shaft. However, this method goes against the objective of downsizing a magnetic recording/reproducing apparatus in which the cylinder is attached to a separate chassis and the cylinder enters the cassette side during loading. Therefore, in order to downsize the conventional pinch cola crimping device as shown in Figure 4,
The problem is that it is difficult to avoid interference between the pinch roller and other members, and it is difficult to set a flexible tape path.

In view of these problems, the present invention provides a pinch roller crimping device that allows the pinch roller to freely follow a trajectory relative to the capstan, avoids interference with other members, and has a compact configuration. An object of the present invention is to provide a roller crimping device.

Means for Solving the Problems In order to solve the above problems, the present invention provides a magnetic recording/reproducing device in which a first chassis to which a cylinder is attached and a second chassis to which a capstan is attached move relative to each other. hand,
A pinch roller that drives the tape by pressing against the capstan is held by a pinch roller holder rotatably supported by the second chassis, and the pinch roller pressure member is held by the first chassis.
The first chassis is provided with a guide member rotatably supported on the chassis and regulating the trajectory of the pinch roller via the pinch roller holder or an arm attached to the pinch roller holder. This is what I did.

According to the above-described configuration, the pinch roller holder pivotally supported by the first chassis moves closer to each other during loading, as the first chassis to which the cylinder is attached and the second chassis to which the capstan is attached approach each other. Alternatively, the arm attached to the pinch roller holder is regulated by a guide provided on the second shear, so that the pinch roller moves while avoiding interference with other members and comes adjacent to the capstan shaft. Furthermore, the pinch roller is pressed onto the capstan shaft by the pinch roller pressing member pivotally supported by the second shear.

Example Hereinafter, the present invention will be explained based on illustrated embodiments.

FIG. 1 shows a plan view of a pinch roller crimping device according to an embodiment of the present invention. In the figure, 1 is a first chassis with a cylinder attached, 2 is a second chassis with a capstan attached, 3 is a pinch roller holder rotatably attached to the first chassis, and 4 is a pinch roller holder. 5 is a bottle that slidably holds the pinch roller holder 3, 5 is a pinch roller holder that rotatably holds the pinch roller 10, and 6 is a compressor that urges the pinch roller 10 toward the pinch roller holder 3. Spring, 7 is the axis of the pinch roller holder 3, 8 is the pinch roller collar, 9
1 is a pinch roller shaft, 10 is the pinch roller, 11 is an arm regulated by a guide via a guide bin and fixed to the pinch roller holder 3, 12 is a guide post that slides on the guide, and 13 is the second chassis 2. 14 is a capstan shaft; 15 is a second gloss 72;
a pinch roller crimping arm rotatably mounted on the
6 is a shaft of a pinch roller crimping arm, and 17 is a cylinder attached to the first chassis 1. 18 is a cylinder ring that slidably holds the boss boat 19;
9 is a bost boat.

As described above, in this embodiment, during loading, as the first chassis 1 approaches the second chassis 2 from the state shown in FIG. 1 to the state shown in FIG.
The capstan shaft 14 is regulated by the guide 13 via the pinch roller holder 3 and the pinch roller crimping arm 15.
approach. At this time, the pinch roller 1o can avoid interference with the post boat 19 and the guide post 12 by providing a suitable guide.

Furthermore, as the pinch roller 10 approaches the capstan shaft 14, the pinch roller crimping arm 15 also moves closer to the pinch roller 2.
10 and presses the pinch roller collar 8 to press the pinch row 210 onto the capstan shaft 14.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, there is provided a magnetic recording/reproducing device which is miniaturized by relatively moving a first chassis to which a cylinder is attached and a second chassis to which a capstan is attached. By freely providing the guide, the pinch roller can be moved while avoiding interference between the pinch roller and other members, and the configuration can be made compact. In addition, by rotatably attaching the pinch roller crimping arm to the second chassis,
The timing of crimping and positioning of the pinch roller during crimping can be easily performed, which is highly effective.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the main parts of a pinch roller crimping device according to an embodiment of the present invention when unloading is completed, Fig. 2 is a plan view of main parts of the same embodiment when loading is completed, and Fig. 3 is the same implementation. FIG. 4 is a side view of the main part when loading is completed in the example, and a plan view of the main part of the conventional pinch roller crimping device. 1...First chassis, 2...Second chassis, 3, 5...Pinch roller holder, 6
・・・・・・Spring, 1o・・・Pinch roller, 1
1...Pinch roller holder arm, 14...
... Capstan shaft, 15 ... Pinch roller crimping arm, 17 ... Cylinder. Name of agent: Patent attorney Toshio Nakao and 1 other person/-
--OI Nyan Z-0-Year 2 Chassis a, 5---Pinch roller holder 6, -, B Order! θ-pinch roller! ! - Pinch roller holder arm 14 - Pumethane shaft 15 - Pinch roller holding arm 17, - Cylinder No. 1 Fig. 2 Fig. 3

Claims (1)

[Claims] A magnetic recording/reproducing device in which a first chassis to which a cylinder is attached and a second chassis to which a capstan is attached move relative to each other, wherein a pinch roller that drives the tape by being in pressure contact with the capstan is attached to the first chassis. A pinch roller holder is rotatably supported on the second chassis, and the pinch roller crimping member is rotatably supported on the second chassis, and the pinch roller crimping member is rotatably supported on the second chassis, and A pinch roller crimping device characterized in that a guide member for regulating the trajectory of the pinch roller is provided on the second chassis.