JP2933784B2 - cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge containing a flexible disk, a hard disk, especially an optical disk or the like rotatably housed in a case, or an audio or video cassette containing a tape medium.
The present invention relates to a digital compact cassette cartridge.

[0002]

2. Description of the Related Art Generally, an information medium, for example, a magnetic disk, an optical disk, a magneto-optical disk, or a tape is set in a recording / reproducing apparatus as a cartridge housed in a case. Conventional media of this type are susceptible to dust and dirt during handling, and are especially susceptible to damage.In addition, because of the large effects of temperature changes, openings such as the head insertion hole and drive shaft insertion hole provided in the case are required. It is known to have a shutter that opens and closes when a disc is used or not, and a lock member that locks the shutter.

[0003]

In a conventional cartridge having a shutter for opening and closing an opening formed in a case, an arm of a lock member for maintaining the shutter in a closed state is engaged with the shutter. Although it is provided, the conventional lock member is configured to elastically deform the arm portion having the engaging portion, so when the displacement amount of the engaging portion is large,
It is necessary to form the engaging concave portion, and the sectional area becomes large and the deforming force becomes large, which hinders the operation of the shutter, or the shutter member lock operation is inaccurate, which causes a problem in the shutter locking operation. Was. The present invention is intended to eliminate these conventional disadvantages, and can reduce the force of deformation of the locking member of the shutter, improve the slidability of the shutter, operate smoothly, and do not cause malfunction. The aim is to improve the reliability by improving the safety and to make the cartridge easy and inexpensive to manufacture.

[0004]

According to the present invention, a medium is accommodated in a case having an opening through which a recording / reproducing head and a drive shaft can be inserted, and a shutter for opening and closing the opening is slidably slidable. A cartridge provided with a lock member for maintaining the shutter in a closed state, wherein the lock member is rotatably inserted into a support shaft protruding from a case, and extends from the shaft support portion. The first arm portion has an engaging recess for engaging with the sliding guide of the shutter, and a movement for restricting the movement of the engaging recess. A cartridge is characterized in that a regulating arm is provided so as to protrude from the first arm.

[0005]

The lock member of the shutter is rotatably supported on the shaft of the case, the elastic second arm extending from the bearing is locked to the inner wall of the case, and the rigid first arm is an engagement recess. The cross-sectional area of the rigid first arm portion can be reduced by being locked to the sliding guide of the shutter and having the movement restricting arm portion integrally branched and protruded from the rigid first arm portion. Can reduce the deforming force of the first arm portion when elastically deforms by contacting the lock member, thereby making the locking function of the shutter accurate, and guaranteeing smooth operation even when the shutter is opened, thereby causing a shaving phenomenon. In addition, the accuracy of the lock member can be easily determined without any defect, and the reliability is significantly improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment of the present invention will be described with reference to the example of a disk cartridge shown in FIGS. A cartridge having a case 1 slidably provided with a shutter 4 having a substantially U-shaped cross section for opening and closing the opening 3, wherein the case 1 comprises an upper case and a lower case. The shutter 4 is provided with a sliding guide 10 having a U-shaped cross section. The sliding guide 10 is inserted into the case 1 from the side surface of the case 1 and is locked in the engaging recess 13 of the lock member 12. The lock member 12 includes a bearing portion 15 rotatably inserted into a support shaft 11 protruding from the case 1, and a rigid first arm portion 14 extending from the bearing portion 15. When,
The second arm 16 is elastically deformable.
The arm portion 14 and the engaging recess 13 that engages with the sliding guide of the shutter 4, together with entering the recess provided in the upper case 1 is provided a convex portion 13 ₁ for the sliding guidance of the locking member 12 A movement restricting arm 17 for restricting the movement of the engaging recess 13 is provided so as to protrude from the first arm 14 so as to form a cartridge.

The lock member 12 has a first arm 1
4 at a position different in height from the engaging recess 13 provided in
A movement restricting arm 17 for restricting the movement of the engaging recess 13 is integrally branched and protruded, and is engaged with a restricting rib 18 protruded from the case 1.
Abuts on and is supported by a horizontal regulating rib 19 projecting therefrom. That is, the movement restricting arm portion 17 and the elastic second arm portion 16 divergently provided from the first arm portion 14 of the lock member 12.
The front end of the control ribs 18 and 1 protrude inside the case.
9 is abutted. Therefore, the lock member 12
Since the positional relationship between the movement restricting arm 17 and the restricting rib 18 can be determined (visually or the like) at the time of assembling into the case 1, for example, when the accuracy of the lock member 12 is poor and the restricting portion does not function well, it is determined immediately. Can be replaced, and quality assurance can be increased.

The sliding guide 10 for the shutter 4
Are provided at positions protruding outward from both ends of the shutter plate of the shutter 4 so as to face each other, and are fitted and supported so as to sandwich the case 1 from both upper and lower surfaces. Further, a sliding guide plate having a leading edge of the sliding guide 10 is bent and inserted into a slide groove formed at a joint surface position of the upper and lower cases, and is connected to both end positions of the shutter plate. It is.

In the drawing, reference numeral 5 denotes a shutter area for sliding the shutter 4 having a U-shaped cross section, which is formed in a concave surface on the outer surface of the case. 6 is a clamping plate, 7 is an erasure prevention plug, and 8 is a label area. Reference numeral 20 denotes a regulating rib of the elastic second arm portion provided on the upper case.
The case 1 is selected and configured for various cartridge-type shells containing a disk-shaped medium such as a floppy disk, a compact disk, a video disk, and an optical disk or a tape-shaped medium such as a digital compact cassette.

[0010]

According to the present invention, there is provided a cartridge having a shutter for opening and closing an opening of a case and a lock member for maintaining the shutter in a closed state, wherein the lock member is attached to a support shaft projecting from the case. It comprises a rotatable bearing portion, a rigid first arm portion and an elastic second arm portion extending from the bearing portion, and the first arm portion engages with a sliding guide of the shutter. The first arm portion of the lock member that engages with the shutter has a rigidity by providing an engagement concave portion for engaging the shutter and providing a movement restricting arm portion that protrudes from the first arm portion to regulate the movement of the engagement concave portion. Yes,
The second, which is surely maintained in the engaged state and is elastically deformable
Since the arm portion and the movement restricting arm portion are branched and protruded from the first arm portion, the cross-sectional area of the first arm portion can be reduced, and the deforming force of the lock member can be reduced by the first arm portion and the first arm portion. It can be reduced by sharing the two arms, the locking force is optimized without getting strong, the shutter movement is smooth, the shutter can be opened and closed safely without malfunctioning, and when opening and closing the shutter The locking member does not come off from the shutter and there is no problem in the locking action, and there are few cases of damage to the case and shavings, so that reliability is significantly improved without hindering recording / reproduction such as dropout etc. When the lock member is installed in the case, the positional relationship between the movement control arm and the control rib can be easily determined, eliminating the incorporation of defective members. Is worn like quality and durability, production also has practical advantages, such as it is easy-inexpensive.

[Brief description of the drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a perspective view of the example of FIG. 1 in a separated state.

FIG. 3 is an enlarged plan view of the example of FIG. 1 in a state where a shutter lock member is assembled.

FIG. 4 is a front view of a shutter lock member.

FIG. 5 is a perspective view of the shutter lock member of FIG. 4;

6 is an enlarged perspective view of a part of FIG.

FIG. 7 is a developed plan view showing the inside of the upper and lower cases of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Disc-shaped medium 3 Opening 4 Shutter 5 Shutter area 10 Sliding guide 11 Support shaft 12 Lock member 13 Engagement concave part 14 Rigid first arm part 15 Bearing part 16 Elastic second arm part 17 Movement regulating arm part 18 Regulation rib 19 Regulation rib

Claims (3)

(57) [Claims] 1. A shutter (1) for storing a medium (2) in a case (1) having an opening (3) into which a recording / reproducing head, a drive shaft and the like can be inserted, and opening and closing the opening (3). In the cartridge provided with a lock member (12) for slidably holding the shutter (4) and maintaining the shutter (4) in a closed state, the lock member (12) is a support shaft protruding from the case (1). A bearing (15) rotatably inserted into the (11), and a rigid first member extending from the bearing (15).
An arm portion (14) and an elastic second arm portion (16), and the first arm portion (14) is provided with the shutter (4).
Engagement recess (13) that engages the sliding guide (10) of
The movement restricting arm (17) for restricting the movement of the engaging recess (13) is provided with the first arm (14).
A cartridge characterized by branching and protruding from the cartridge. 2. The movement restricting arm (17) is integrally formed at a position different in height from an engaging recess (13) provided in a first arm (14) of the lock member (12). Branch
The cartridge according to claim 1, wherein the cartridge is protruded . 3. A first arm portion of the lock member (12).
The distal ends of the movement restricting arm (17) and the elastic second arm (16) provided in (14) are provided in contact with restricting ribs (18, 19) protruding from the case. claims 1
Or the cartridge according to 2.