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Reel spring used for cassette and cassette

A technology of cassette tape and reel, applied in the field of reel spring

Inactive Publication Date: 2004-12-08
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Accordingly, the purpose of the present invention is to solve the above problems and to propose a reel spring for a magnetic tape cassette, the ratio of the length of the fixed part of the reel spring to the height of the upper half protrusion is 4 or greater, and a A magnetic tape cassette employing the reel spring, wherein the reel spring is incorporated into the cassette during assembly of the cassette, the reel spring does not move from its corresponding position within the cassette during transfer and engagement, thereby overcoming the Complications in the engagement process of reel springs and increased productivity compared to prior art

Method used

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  • Reel spring used for cassette and cassette
  • Reel spring used for cassette and cassette
  • Reel spring used for cassette and cassette

Examples

Experimental program
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Effect test

Embodiment Construction

[0048] The magnetic tape cassette of the present invention to which the reel spring of the magnetic tape cassette of the present invention is applied has the same structure as a conventional magnetic tape cassette except for the reel spring. So apply below Figure 1A and Figure 1B Shown in the description of the tape cassette of the reel spring of the present invention is the use of image 3 The digital videocassette 30 is shown as an example of a conventional magnetic cassette, except for the reel spring 36, which bears the same reference numerals.

[0049] Figure 1A and Figure 1B A reel spring for a digital video cassette is shown as an embodiment of the reel spring for a magnetic tape cassette of the present invention.

[0050] exist Figure 1A and 1B The reel spring 10 shown in includes a fixed part 10a, when the fixed part 10a is fixed on the magnetic tape case that has the upper half piece protrusion 42, forms the fixed end; An arm part 10b, this arm part loadin...

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Abstract

The reel spring for use in a magnetic tape cassette comprises a fixing portion which is fixed to a boss of a cassette case by means of a boss hole, an arm portion which forces a reel in an axial direction of rotation and a bending portion provided between the fixing portion and the arm portion in an L-like shape. The ratio of a length of the fixing portion of the reel spring to a height of the boss is 4.0 or more. The length of the fixing portion is longer than that of the arm portion by 1 mm to 5 mm. The magnetic tape cassette employs the reel spring which is capable of enhancing production efficiency in fabricating the magnetic tape cassette while maintaining a specified force of the reel spring.

Description

technical field [0001] The invention relates to a reel spring of a magnetic tape cassette, the reel spring is used for loading in the direction of a reel on which a magnetic tape is wound and which is rotatably arranged in a cassette. The present invention also relates to a magnetic tape cassette using the reel spring. Background technique [0002] In recording equipment, video recording equipment, etc., a cassette tape is generally used, and the cassette tape is wound on a pair of reels, and the tape is run in the cassette to realize recording and playback. [0003] In this type of magnetic tape, there is a pair of reel springs inside the cassette, which are used to prevent displacement of the reel pair on which the magnetic tape is wound in the axial direction of rotation and through the reel spring pair to the reel pair in the cassette. The loading on the rotating shaft realizes the smooth running of the tape. [0004] image 3 An L-type digital video cassette (DVC-L) i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B23/087
CPCG11B23/08721G11B23/08728G11B23/087
Inventor 喜多明尚山口达也
Owner FUJIFILM CORP