JPH04132672U - Optical disk cartridge - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an optical disk cartridge that reduces the number of parts and steps during assembly and allows the shutter to open and close in a stable manner at all times. [Structure] An optical disc cartridge comprising: a shell that accommodates an optical disc; a shutter that opens and closes an opening of the shell; and a shutter guide that always covers one end of the shutter and guides the opening/closing operation of the shutter. The shutter guide is characterized in that the shutter guide is integrally molded with the shell, and the width of the shutter guide is formed to be shorter than the width of the shutter. This prevents a large gap from being formed in the vicinity of the shutter guide when the shutter is fully closed, as in the conventional case, and prevents the drive of the disk drive from being hindered by the intrusion of foreign matter.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to cartridges for optical discs, and in particular stabilizes the opening and closing operation of the shutter. The present invention relates to an improvement of a shutter guide provided for the purpose of performing the shutter operation.

0002

[Conventional technology and its problems]

In CD-ROMs, write-once optical discs, rewritable optical discs, etc. , an optical disc cartridge containing a disc (hereinafter also referred to as a cartridge) Usually, as shown in FIGS. 7 and 8, a shell 11 that accommodates a disk and a disk In order to protect the disk, record on the disk, and play it back, open the shell 11. A shutter 12, which is biased by a spring (not shown) so as to be able to open and close the opening window 11a, opens and closes the window 11a. It is arranged so as to extend over both the front and back sides of the handle 11.

0003 In addition, to prevent the shutter 12 from accidentally coming off from the shell 11, A shutter guide 13, which is a separate member, is attached to the shell so as to always cover one end of the shutter 12. It is generally attached to the outer surface of 11. For this reason, conventional cartridges The number of parts is large, and the automation of assembly work is also very complicated. There were other problems.

0004 Furthermore, the width of the shutter guide 13 (the length extending in the opening/closing direction of the shutter, hereinafter referred to as the width of the shutter guide 13) (also called shutter guide width) W5 is the width of the shutter 12 (covered by the shutter guide) The length (hereinafter also referred to as shutter width) is approximately twice as long as W4, and the shutter 12 is open/closed. The shutter guide 13 is always arranged to cover the entire shutter width W4, regardless of the Therefore, especially when the shutter 12 is fully closed, there is a gap between the shutter guide 13 and the shell 11. A large gap S is created, and foreign matter such as dust can enter the gap S, causing damage to the disk drive. This may cause problems with the drive, or the shutter guide 13 may become deformed or fall off. There was a problem.

[0005]

[Purpose of invention]

Therefore, this invention was devised to solve the above-mentioned problems. We have minimized the number of parts and processes, and the shutter opening and closing operations are always stable. The purpose of the present invention is to provide an optical disc cartridge that can be used as an optical disk.

[0006]

[Means to solve the problem]

In order to achieve the above object, the present invention includes a shell that accommodates a disk, and a shell that accommodates a disk. A shutter that opens and closes the opening window of the well, and a shutter that always covers one end of the shutter and a shutter that opens and closes the opening window of the well. An optical disc cartridge having a shutter guide that guides the opening and closing operation of the shutter. the shutter guide is integrally molded with the shell, and the shutter guide is integrally molded with the shell; The shutter guide is characterized in that the width of the shutter guide is formed to be shorter than the width of the shutter.

[0007] Furthermore, a convex portion that protrudes in the closing direction of the shutter is provided at one end of the shutter. The shell may also be provided with a recess for locking the protrusion.

[0008]

【Example】

Embodiments of the present invention will be described in detail based on the drawings. As shown in FIGS. 1(a) and 1(b), the optical disc cartridge C1 includes a disc A shell 1 made of polycarbonate containing D and covering the opening window 1a of the shell 1. , a stainless steel shutter 2 for opening and closing the opening window 1a, and a stainless steel shutter 2 for opening and closing the opening window 1a; A shutter guide 3 to guide and a light that can prohibit writing on the optical disc D Consists of protection 4 etc. This cartridge C1 is ISO standard φ86 (mm). It accommodates optical discs. Furthermore, the material of the shell 1 is the above-mentioned material. Other materials such as ABS resin can be used, and resins such as polyacetal can also be used for shutter 2. It is possible to use

[0009] In addition, as shown in FIGS. 2 and 3, the shell 1 and shutter guide 3 are injection molded. Molded in one piece by law. Furthermore, the shutter guide width W2 is changed to the shutter width W1 When the shutter 2 is fully closed (Fig. 1(a)), the shutter guide The door 3 covers one end of the shutter 2 by the shutter guide width W2, and covers the entire shutter 2. When the shell guide 3 is opened (FIG. 1(b)), the shell guide 3 is close to the shutter width W1 of the shutter 2. I try to cover some of it. Here, the shutter 2 when the shutter 2 is fully closed and The overlap width W3 with the shutter guide 3 is 1 to 2 mm (according to the ISO standard, the shutter width W 1 is 27 mm at maximum, the shutter guide width W2 is approximately 25 to 26 mm).

0010 With the above configuration, the process of attaching the shutter guide 3 to the shell 1 is easy. This is no longer necessary, reducing the number of parts and man-hours compared to conventional methods. Also, if shutter 2 is closed, Since there is no gap between the shutter guide 3 and the shell 1 when This prevents foreign objects such as dust from entering between the shutter 2 and the shutter guide 3. There was no problem with the drive of the drive.

[0011] In addition, we prepared 10 cartridges with the above configuration and conducted a drop impact test from a height of approximately 760 mm. When tested, shutter 2 did not fall off at all even after 50 drops. Next, a second embodiment of the present invention will be described. This example is shown in FIG. 4(a) as a modified enlarged view of the E1 section in FIG. 1(a), and in FIG. 4(b) as As shown in the deformed enlarged view of part E2 in FIG. A convex portion 2a (length 1 to 5 mm) protruding in the closing direction of 2 is provided, as shown in Fig. 4(a). When the shutter 2 is in the closed state, the recess 1b that locks the protrusion 2a is attached to the shell 1. It was established. When the shutter 2 is open, it becomes as shown in Fig. 4(b), and this convex part The overlapping width W5 between 2a and the shutter guide is about 2 to 7 mm. Formed like this By doing this, the locking between the shutter 2 and the shell 1 is ensured, making it even more stable. A highly reliable optical disc cart that can open and close the shutter. Ridge can be provided. Note that the shape of the convex portion 2a is not limited to a rectangular shape. , as shown in Figures 5(a) to (c), various deformations such as circular and triangular are possible. . Further, a recessed portion is formed in the shell 1 in accordance with the deformation.

0012 In addition, in the above-mentioned example, one example is for a cartridge for an optical disk of φ86 (mm). Although we have shown an example, even in large cartridges such as those for φ130 (mm), the shutter and This can be sufficiently implemented by appropriately changing the overlap width with the shutter guide. Ma In addition, the shape and material of the shell, shutter, etc. are limited to those in the above-mentioned embodiments. Instead, the present invention can be modified and implemented as appropriate without departing from the gist of the invention. For example, as shown in FIG. Place the shutter guide 5, which is integrally molded with the shell 1, on the back side of the shell 1 (throughout) so that the It may also be provided on the non-clamping side (which usually does not have a shutter guide); This makes the opening/closing operation of the shutter 2 even more reliable, making it more robust against shocks, etc. It is possible to provide a cartridge for an optical disc. Also, in this case the above As shown in FIGS. 4 and 5 showing the second embodiment, a convex portion is formed at one end of the shutter. However, a recess for locking this may be provided on the shell side.

[0013]

[Effect of the idea]

According to the optical disc cartridge of the present invention, the shutter guide and the shell are integrated. By molding the optical disk cartridge, the number of parts in the optical disc cartridge can be reduced, and the assembly is easier. To simplify and automate the assembly process and enable quick and easy manufacturing. We can provide a large quantity of cheaper products.

[0014] In addition, the width of the shutter guide has been made shorter than the width of the shutter, so unlike conventional Prevent foreign matter such as dust from entering the gap formed between the shutter and shutter guide. This eliminates the problem of interfering with the drive of the disk drive. Become.

[0015] In addition, we have installed a shutter guide on the non-clamping side, and By providing a convex part on one end and a concave part to lock it in the shell, it is more stable. A highly reliable optical disc cart that can open and close the shutter. Ridge can be provided.

[Brief explanation of drawings]

FIG. 1 is a plan view of an optical disc cartridge according to the present invention, in which (a) is a plan view showing when the shutter is fully closed;
(b) is a plan view showing when the shutter is fully open.

FIG. 2 is a partial cross-sectional view taken along line A-A in FIG. 1;

FIG. 3 is a perspective view of a portion forming a shutter guide of the optical disc cartridge according to the present invention.

FIG. 4 is an enlarged view illustrating a second embodiment, (a)
1(b) is a plan view showing a modified and enlarged portion E1 in FIG. 1(a), and FIG. 1(b) is a plan view showing a modified enlarged portion E2 in FIG. 1(b).

FIGS. 5(a) to 5(c) are plan views each showing a modified example of the convex portion.

FIG. 6 is a plan view of the non-clamping side of the optical disc cartridge according to the present invention.

FIG. 7 is a plan view of a conventional optical disc cartridge.

8 is a partial cross-sectional view taken along line BB in FIG. 7. FIG.

[Explanation of symbols]

1,11 ・・・ Shell 2,12 ・
・・Shutters 1a, 11a ・・Opening windows 3, 13 ・
... Shutter guide 4 ... Write protect C1, C2 ... Optical disc cartridge D ... Disc

Claims (2)

[Scope of utility model registration request] 1. An optical disc cartridge comprising: a shell that accommodates a disc; a shutter that opens and closes an opening of the shell; and a shutter guide that always covers one end of the shutter and guides the opening and closing operations of the shutter. An optical disc cartridge, characterized in that the shutter guide is integrally molded with the shell, and the width of the shutter guide is formed to be shorter than the width of the shutter. 2. The optical disk cartridge according to claim 1, wherein one end of the shutter is provided with a protrusion projecting in the closing direction of the shutter, and the shell is provided with a recess for locking the protrusion.