JPH079721B2 - Pinch roller crimping device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pinch roller crimping device effective for use in a magnetic recording / reproducing device such as a video tape recorder.

2. Description of the Related Art FIG. 4 is a plan view of a conventional pinch roller crimping device in a magnetic recording / reproducing apparatus having a structure in which a cylinder is attached to another chassis in order to reduce the size of the magnetic recording / reproducing apparatus, and the cylinder enters the cassette side at the time of loading. Show. In the figure, 1 is a first chassis with a cylinder attached,
Reference numeral 2 is a second chassis having a drive member such as a capstan and a reel stand. 3 is a capstan shaft, 4 is a pinch roller, 5 is a pinch roller holder rotatably supported by the second chassis 2, and holds the pinch roller 4 rotatably. 6 is a pinch roller holder shaft, and 7 is a guide post slidably attached to a guide provided on the second chassis 2. Reference numeral 8 is a cylinder incorporating a rotary magnetic head, 9 is a cylinder ring for winding a magnetic tape on the cylinder 8, 10 is a tape winding boat slidably mounted on the cylinder ring 9, and 11 is a guide. .

In the conventional pinch roller crimping device configured as described above, the pinch roller 4 approaches the capstan shaft 3 while taking a turning locus about the pinch roller holder shaft 6 via the pinch roller holder 5 and crimping. To be done.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in the configuration shown in FIG. 4 as described above, if the guide 11 having the guide post 7 slidably mounted is provided at a position close to the capstan side, pinch is applied at the time of tape loading. The 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 comes into contact with the boat 10 mounted on the cylinder ring 9 during loading.

In order to avoid the interference between the pinch roller and other members as described above, it is possible to increase the distance between the cylinder and the capstan shaft. However, this method runs counter to the purpose of downsizing the magnetic recording / reproducing apparatus in which the cylinder is attached to another chassis and the cylinder enters the cassette side at the time of loading. Therefore, in order to reduce the size, the conventional pinch roller crimping device as shown in FIG.
It is difficult to avoid interference between the pinch roller and other members, and it is difficult to set a free tape path.

In view of such a problem, the present invention can provide a pinch roller crimping device having a compact structure while avoiding interference with other members while the pinch roller takes a free locus with respect to the capstan. An object is to provide a roller crimping device.

Means for Solving the Problems In order to solve the above problems, the present invention is a magnetic recording / reproducing apparatus in which a first chassis having a cylinder and a second chassis having a capstan move relative to each other. hand,
A pinch roller holder that is pressed against the capstan to drive the tape is held by a pinch roller holder that is rotatably supported by the second chassis, and the pinch roller pressure member is attached to the first chassis.
The first chassis is provided with a guide member that is rotatably supported on the chassis and that regulates the locus of the pinch roller via the pinch roller holder or an arm attached to the pinch roller holder. It was done.

Operation The present invention has the above-described structure, and at the time of loading, as the first chassis equipped with the cylinder and the second chassis equipped with the capstan approach each other, the pinch roller holder pivotally supported by the first chassis is provided. Alternatively, the arm attached to the pinch roller holder is restricted by the guide provided on the second chassis, so that the pinch roller moves while avoiding interference with other members and is adjacent to the capstan shaft. Further, the pinch roller crimping member pivotally supported by the second chassis crimps the pinch roller to the capstan shaft.

Example Hereinafter, the present invention will be described based on the illustrated example.

FIG. 1 is 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 to which a cylinder is attached, 2 is a second chassis to which a capstan is attached, 3 is a pinch roller holder rotatably attached to the first chassis, and 4 is a pinch roller holder. 5 is a pin that is slidably held and is fixed to the pinch roller holder 3, 5 is a pinch roller holder that rotatably holds the pinch roller 10, and 6 is a compression that biases the pinch roller 10 toward the pinch roller holder 3 side. A spring, 7 is a shaft of the pinch roller holder 3, 8 is a pinch roller collar, 9 is a pinch roller shaft, 10 is the pinch roller, and 11 is an arm fixed to the pinch roller holder 3 by a guide pin. 12 is a guide post that slides on the guide, 13 is a guide member fixed to the second chassis 2, 14 is a capstan shaft, and 15 is rotatably attached to the second chassis 2. The pinch roller crimping arm 16 is a shaft of the pinch roller crimping arm, and 17 is a cylinder attached to the first chassis 1. Reference numeral 18 is a cylinder ring that slidably holds a post boat 19, and 19 is a post boat.

As described above, in this embodiment, as the first chassis 1 approaches the second chassis 2 from the state shown in FIG. 1 to the state shown in FIG. 2 at the time of loading, the pinch roller 10 becomes the pinch roller holder. The capstan shaft 14 is approached while being regulated by the guide 13 via the 3 and the pinch roller crimping arm 15. At that time, the pinch roller 10 is provided with an appropriate guide so that the post boat 19 and the guide post can be provided.
You can avoid interference with 12. Also, pinch rollers
As 10 approaches the capstan shaft 14, the pinch roller crimping arm 15 also rotates while following the pinch roller 10.
By pressing the pinch roller collar 8, the pinch roller 10 is pressed against the capstan shaft 14.

As described above, according to the present invention, in the magnetic recording / reproducing apparatus in which the first chassis having the cylinder and the second chassis having the capstan relatively move, the miniaturization is realized. By providing the guide freely, the pinch roller can be moved while avoiding the interference between the pinch roller and other members, and a compact structure can be achieved. Further, by rotatably attaching the pinch roller crimping arm to the second chassis, the timing of crimping the pinch roller and the positioning at the time of crimping can be easily performed, and the effect is great.

[Brief description of drawings]

FIG. 1 is a plan view of an essential part 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 an essential part of the embodiment when loading is completed, and FIG. FIG. 4 is a side view of an essential part of the example when loading is completed, and FIG. 4 is a plan view of an essential part of a conventional pinch roller crimping device. 1 ... 1st chassis, 2 ... 2nd chassis, 3, 5 ...
… Pinch roller holder, 6 …… Spring, 10 …… Pinch roller, 11 …… Pinch roller holder arm, 14 …… Capstan shaft, 15 …… Pinch roller crimp arm, 17 …… Cylinder.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoshi Kikutani 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Osamu Zaitsu, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (1)

[Claims] 1. A magnetic recording / reproducing apparatus in which a first chassis having a cylinder attached thereto and a second chassis having a capstan attached thereto move relatively to each other, and a pinch roller which presses the capstan to drive a tape. The pinch roller holder is rotatably supported by the first chassis and is held by the pinch roller holder. The pinch roller crimping member is rotatably supported by the second chassis, and the pinch roller holder or the pinch roller holder is supported by the pinch roller holder. A pinch roller crimping device, wherein a guide member for restricting a locus of the pinch roller is provided on the second chassis via an attached arm.