JP2001243737A - Holder for disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain lowering of spring constant, improvement of disengagement of a chevron projection 33 form a restraining hole 16 and load reduction at the time of inserting a MD 11 as to a plate spring 28 for moving a shutter 15 from an open position to a close position at the time of ejecting the MD 11 in a holder 10 for the MD. SOLUTION: The plate spring 28 is provided with a pad part 29 which is fixed to a right sidewall 21 by a joining point 34, an extending part 30 which extends from the pad part 29 toward an inserting/extracting port 23 along an upside of the right sidewall 21, a connecting part 31 hanging from an edge part of the inserting/extracting port 23 side of the extending part 30 and a return part 32 which extends from a lower end part of the connecting part 31 toward the pad part 29 in parallel to the extending part 30. The chevron projection 33 is formed at an edge part of the pad part 29 side of the return part 32 and goes in and out the restraining hole 16 according to spring force of the plate spring 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a holder for a disk cartridge such as an MD, and more particularly, to a disk cartridge holder with improved opening and closing of a shutter of the disk cartridge.

[0002]

2. Description of the Related Art A conventional MD holder shown in FIGS. The same elements as those of the embodiment of the present invention described later are designated by the same reference numerals, and the description thereof will be omitted. Further, similarly to the description of the embodiment of the present invention described later, for the sake of convenience of description, the thickness direction of MD11 is the up-down direction, the front side and the back side are the upper side and the lower side, respectively. The front side and the rear side in the insertion direction are the front side and the rear side, and the left and right are the left and right in the MD11 insertion direction. The MD holder 10 is also referred to as front and rear, left and right, and up and down in accordance with the front and rear, left and right, and up and down of the inserted MD 11. A and B are MD to holder body 19
11 shows the insertion direction and the ejection direction, respectively.

FIG. 9 is a perspective view of a conventional MD holder 70 with the MD 11 inserted. The leaf spring 71 includes a contact portion 72 fixed to the outer side surface of the right side wall 21 of the holder body 19 at two fastening points 73, an extension portion 74 extending rearward from the contact portion 72, And a chevron 75 formed near the rear end of the portion 74.

FIG. 10 is a diagram showing the acting force from the leaf spring 71 to the shutter 15 when the leaf spring 71 is bent. Angle projection 75 is 2
It is displaced on an arc centered on the rear fastening point 73 (hereinafter, referred to as “reference fastening point 73”) of the individual contact portions 72. As a result, when the chevron 75 entrains the shutter 15 from its open position to its closed position,
Acting on the front side edge of the locking hole 16
The direction is perpendicular to the contact-side inclined surface of the shutter 75, and is close to the direction perpendicular to the sliding direction of the shutter 15. Therefore,
(A) The cartridge 13 and the shutter when the shutter 15 slides
There is a problem that the frictional force with 15 increases.

FIG. 11 shows the state of the cartridge 13 while the MD 11 is being inserted.
7 shows the acting force F2 from the cartridge 13 to the chevron projection 75 and the displacement direction R5 of the chevron projection 75 when the right front corner of the chevron abuts on the chevron projection 75. In this abutment, the chevron 75 is displaced on an arc centered on the reference fastening point 73, that is, displaced obliquely forward. As a result, the acting force F2 acts in a direction to push the chevron 75, (B) The right front corner of the cartridge 13 can easily bite into the chevron 75, and
This will hinder the movement of D11.

FIG. 12 shows the acting force F3 from the locking hole 16 to the chevron 75 and the displacement direction R6 of the chevron 75 when the chevron 75 separates from the locking hole 16 while the MD 11 is being ejected. In this detachment, the chevron 75 is displaced on the arc R6 centered on the reference fastening point 73 by F3, that is, displaced obliquely forward, and the acting force F3 does not push the chevron 75, so that the chevron 75 Biting of the front side edge of the locking hole 16 can be avoided.

FIG. 13 is a perspective view of a conventional MD holder 80 obtained by partially changing the MD holder 70 of FIG. M
Only differences from the D holder 70 will be described. Window 77
Are formed in the right side wall 21 in a predetermined range including the position of the chevron 75 in the front-rear direction. Holding part 81 is a window backward
It is provided at the portion of the right side wall 21 beyond the position 77, is inserted through the tip of the extension 74, and holds the tip so as not to separate from the right side wall 21.

FIG. 14 shows the MD holder 80 of FIG. 13 when the leaf spring 71 is not bent and when it is bent.
As a result of the pressing portion 81 holding the distal end of the extension portion 74 on the right side wall 21, the angled projection 75 is displaced in a direction substantially perpendicular to the right side surface of the cartridge 13.

FIG. 15 shows the acting force F2 from the cartridge 13 to the chevron 75 when the right front corner of the cartridge 13 contacts the chevron 75 when the MD 11 is inserted into the MD holder 80 of FIG. 75 shows a displacement direction R7. In this contact, the chevron 75 is displaced substantially in the left-right direction. As a result, the right front corner of the cartridge 13 is less likely to bite into the chevron 75 than in the case of FIG.

FIG. 16 shows the acting force F3 from the locking hole 16 to the chevron 75 and the displacement direction R8 of the chevron 75 when the chevron 75 separates from the locking hole 16 while the MD 11 is being ejected. In this detachment, the chevron 75 is displaced substantially in the left-right direction, and as a result,
It is avoided that the front side edge of the locking hole 16 cuts into the chevron 75.

[0011]

In addition to the problems (a) and (b) described above, the MD holder 70 shown in FIGS. 9 to 12 has a space from the reference fastening point 73 to the chevron projection 75. In addition, there is a problem that the spring constant cannot be increased and the spring constant increases. That is, if the spring constant is large, (c) the chevron 75
The required ejection force of the MD 11 when detaching from the cartridge 16 increases, and (d) the friction when the chevron 75 slides on the right side of the cartridge 13 increases, so that the necessary insertion force and ejection of the MD 11 are increased. The force increases, and (e) a predetermined clearance is required between the MD 11 and the holder body 19 in the left-right direction,
In order to increase the spring constant of the leaf spring 71, the MD 11 is
, Which requires a further increase in the spring constant of the leaf spring 71, which further increases the problems (c) and (d) described above. MD of FIGS. 13 to 16
In the holder 80 for the MD, the distance from the holding point of the leaf spring 71 to the chevron 75 as the point of action is short, the spring constant of the MD holder 70 increases, and (c) to (e) in the case of the MD holder 70 Has the same problem as

An object of the present invention is to provide a disk cartridge holder which overcomes the above-mentioned problems.

[0013]

According to the disk cartridge holder (10) of the present invention, a leaf spring (28) is provided, and the projection (33) of the leaf spring (28) is connected to the holder body (19). In the process of inserting the disc cartridge (13),
With the relative displacement of the disc cartridge (13), the disc cartridge (13) is elastically inserted into the locking hole (16) of the shutter (15), and is moved in the moving direction of the disc cartridge (13) by a predetermined locking force. Lock hole
(16), and in the process of ejecting the disc cartridge (13) from the holder body (19), the shutter (15) is moved from the open position to the closed position due to the relative displacement with the disc cartridge (13). After the shutter (15) is moved to the closed position, the shutter (15) is separated from the locking hole (16) against the elastic force. In the disc cartridge holder (10), the insertion direction and the ejection direction of the disc cartridge (13) are defined as a first direction and a second direction, respectively,
(28) is a coupling portion (29) coupled to the holder body (19),
An extension portion (30) extending from the coupling portion (29) in the second direction; and a leading end of the extension portion (30), which continues in the first direction from the tip portion and returns to a predetermined return position. Convex part (33)
And a return portion (32) having

The disk cartridge (13) is, for example, an MD disk cartridge. Convex part (33) of leaf spring (28)
Is the shutter (15) when ejecting the disc cartridge (13).
Must be moved from the open position to the closed position.
The function of displacing the shutter (15) from the closed position to the open position when inserting the disk cartridge (13) may not be required. For example, an MD disc cartridge (13) has a shutter (1
5) is equipped with a lock member to lock the closed position.
When the disc cartridge (13) is inserted, the tongue on the disc cartridge holder (10) side is fitted into the groove of the MD disc cartridge (13) while abutting on the lock member,
The lock member releases the lock of the shutter (15) to the closed position, and thereafter, the tongue piece plays a role of displacing the shutter (15) from the closed position to the open position. The protruding portion (33) is preferably a triangular protruding portion whose apex is directed toward the shutter (15). The position of the convex portion (33) in the return portion (32) may be a predetermined return position in the return portion (32), that is, the position is not limited to the tip of the return portion (32), and may be an intermediate portion. Good.

For convenience of explanation, the front and rear sides of the disk cartridge (13) in the direction of insertion of the disk cartridge (13) into the holder body (19) are respectively referred to as the front side and the rear side of the disk cartridge holder (10). The front side and the back side of the disc cartridge (13) inserted into the disc cartridge holder (10) are the upper side and the lower side of the disc cartridge holder (10), respectively, in the direction of insertion of the disc cartridge (13) into the holder body (19). Left and right direction for disk cartridge holder (10)
Right and left directions.

The rear end of the extension portion (30) is connected to the connecting portion (2).
Displaced on an arc C1 centered on 9), the convex portion (33) is displaced on an arc C2 centered on the rear end of the extended portion (30), and C1 and C2 are on the convex side. Since it is the opposite direction,
When viewed from the holder body (19), the displacement direction of the projection (33) approaches the left-right direction substantially. As a result, the disc cartridge (13) is inserted into the holder body (19), and the disc cartridge is inserted.
When the front corner of (13) comes into contact with the projection (33), and while the disc cartridge (13) is being ejected from the holder body (19), the projection (33) engages with the locking hole () of the shutter (15). When disengaging from the disc cartridge (13),
The amount of + in the moving direction of the disk cartridge is suppressed or the amount of + is sufficiently reduced, and the protrusion (33) is
Biting into the front corner of (3) and the front side edge of the locking hole (16) is suppressed.

The length of the leaf spring (28) from the connecting portion (29) to the convex portion (33) as an action point is from the connecting portion (29) to the rear end of the portion (30). L1 and the length L2 from the rear end of the extension portion (30) to the protrusion (33).
Therefore, the spring constant of the leaf spring (28) decreases. Therefore, the disc cartridge (13)
The moving force required for insertion and ejection of the paper can be reduced.

[0018] The disk cartridge holder of the present invention.
According to (10), the leaf spring (28) is provided with the locking hole (1) of the shutter (15).
6) The stopper (38, 38) that limits the amount of displacement of the projection (33)
39).

Since the amount of protrusion of the projection (33) into the locking hole (16) of the shutter (15) is suppressed by the stoppers (38, 39), the locking hole (16) formed by the projection (33) is provided. Is kept below a predetermined value. Thereby, when the disk cartridge (13) is pulled out from the holder body (19), the projection (33) is
The detaching force required when detaching from the locking hole (16) can be reduced, and the moving force of the disk cartridge (13) can be reduced. In addition, it is possible to prevent deformation when handling the leaf spring (28) alone during assembly or the like.

[0020] The disk cartridge holder of the present invention.
According to (10), the leaf spring (28) has two extended portions (30),
The two extending portions (30) extend parallel to each other, the connecting portion (31) interconnects the tips of the two extending portions (30), and the return portion (32) Located between the extending portions (30), the base end is connected to the connecting portion (31), and returns from the connecting portion (31) in the first direction.

The connecting portion (31) is connected to the rear end of each extending portion (30) on both sides in the up-down direction, so that the connecting portion (31) is held at both ends, so that the returning portion (32) extending forward from the connecting portion (31). )
Twist during displacement is suppressed.

The disk cartridge holder of the present invention
According to (10), the leaf spring (28) is formed integrally with the holder body (19).

As a result of the leaf spring (28) being integrally formed with the holder body (19), the labor for assembling the leaf spring (28) to the holder body (19) can be omitted, and the disc cartridge holder ( 10) The number of parts is reduced.

The disk cartridge holder of the present invention
According to (50), a projection (65) is provided, and in the process of inserting the disc cartridge (13) into the holder body (19), the projection (65)
With the relative displacement of the disc cartridge (13), the disc cartridge (13) is elastically inserted into the locking hole (16) of the shutter (15) to lock the disc cartridge (13) in the predetermined moving direction. In the process of ejecting the disc cartridge (13) from the holder body (19), the shutter (15) is moved to the open position due to the relative displacement with the disc cartridge (13). To the closed position, and after the shutter (15) is moved to the closed position, the shutter (15) is separated from the locking hole (16) against the elastic force. The disc cartridge holder (10) includes a holder main body (19) into which the disc cartridge (13) is inserted and ejected from the insertion / extraction opening (23), and a first axis (parallel to the thickness direction of the disc cartridge (13)). 53) a first arm rotatably connected around the base end to the holder body (19) and a distal end extending toward the insertion / extraction opening (23);
(54) a base end side rotatably coupled to a second axis (57) parallel to the first axis (53) with the distal end side of the first arm (54) and a predetermined return position; The second arm (6) having a convex portion (65)
0) and urging means (64) for urging the convex portion (65) toward the disk cartridge (13).

The urging means (64) is formed of, for example, a torsion spring. The position of the convex portion (65) on the second arm (60)
It is sufficient that the return position is a predetermined return position on the second arm (60), that is, the return position is not limited to the tip of the second arm (60).
It may be an intermediate part.

The convex portion (65) is urged toward the disk cartridge (13) by urging the urging means (64) toward the second arm (60), and the locking hole (16) moves in the front-rear direction. At the same position as
The lock hole (16) enters the lock hole (16) and locks the lock hole (16) in the moving direction of the disk cartridge (13). Disk cartridge (1
When the shutter (15) is ejected, the shutter (15) is locked with the projection (65) and the locking hole (1).
After being displaced in the closing direction due to the mutual locking with 6) and reaching the closing direction, the convex portion (65) is urged by the relative movement of the disc cartridge (13) in the discharging direction with respect to the holder body (19). It is separated from the locking hole (16) against the urging force of the means (64). A convex portion (65) as an action point is provided on the second arm (60) and rotates around a second axis (57),
(57) pivots about a first axis (53). The second axis (5
The arc in which 7) is displaced and the arc in which the convex portion (65) is displaced have opposite convex sides. As a result, the convex portion (65) is
As seen from 9), it will be displaced almost in the left-right direction. As a result, the disc cartridge (13) is inserted into the holder body (19), and the front corner portion of the disc cartridge (13) is convex (65).
When the disc cartridge (13) is ejected from the holder body (19) and when the disc cartridge (13) is ejected from the
When disengaging from the locking hole (16) of (5), the displacement component of the projection (65) is suppressed from becoming a positive amount in the moving direction of the disk cartridge (13), or the positive amount is sufficiently reduced, Convex (6
5) is the front corner of the disc cartridge (13) and the locking hole (1
Cutting into the side edge of 6) is suppressed.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the MD holder 10 shown in an inserted state of the MD 11. The MD 11 has a well-known structure, and a disk-shaped disk body 12 is housed in a square-shaped cartridge 13 having a predetermined thickness. For convenience of explanation, the MD 11 is inserted in the thickness direction in the vertical direction, the front side and the back side are the upper side and the lower side, and the MD 11 is inserted into the holder body 19 in the front and rear directions. Left and right are referred to as left and right. M
The D holder 10 is also referred to as front / rear, left / right, and up / down in accordance with the front / rear, left / right, and up / down directions of the inserted MD 11. A and B show the insertion direction and the ejection direction of the MD 11 into the holder main body 19, respectively.

The MD 11 has a well-known structure, and the opening 14
It is formed at the center of the right half of the MD 11 in the front-rear direction, at the position where the upper and lower surfaces face each other. Shutter 15 is a cartridge
13 is mounted on the cartridge 13 so as to be movable in the front-rear direction by the guidance of the guide groove on the right side surface.
Is closed, and the opening 14 is opened at the rear side position. The holder main body 19 includes a bottom wall 20, a left side wall 22 and a right side wall 21 rising upward from both left and right ends of the bottom wall 20, and a left side wall 22.
And a projecting wall 24 that projects a predetermined amount inward in the left-right direction from the upper end of the right side wall 21. The insertion opening 23 is provided at the rear end of the holder body 19, and the lower side, the left and right sides, and a part of the upper side are respectively defined by a bottom wall 20, a left side wall 22, a right side wall 21, and both overhanging walls 24. I have. The tongue 26 is on the right side wall 21
Horizontally protrudes inward in the left-right direction on the inner side of the
13 fits into the guide groove on the right side surface.

The leaf spring 28 is disposed on the outer side surface of the right side wall 21, and has a contact portion 29, an extension portion 30 extending rearward from the upper end of the contact portion 29, and a hanging portion extending from the rear end of the extension portion 30. And a return portion 32 extending forward from the lower end of the communication portion 31. A predetermined gap is formed between the extending portion 30 and the returning portion 32 in the vertical direction, and the chevron 33
Is formed by bending the return portion 32 near the front end of the return portion 32 with the triangular vertex directed toward the MD 11.
The contact portion 29 is fixed to the outer surface of the right side wall 21 by two fastening points 34 separated in the front-rear direction.

When the MD 11 is inserted, the front end of the MD 11 is inserted into the holder main body 19 through the insertion opening 23. The tongue 26 fits into the guide groove on the right side of the cartridge 13 and
When the amount of insertion reaches a first predetermined value, the lock member of the cartridge 13 is pushed inward in the left-right direction to release the lock of the shutter 15 by the lock member, whereby the shutter 15 is slidable in the front-rear direction. The tongue 26 pushes the shutter 15 rearward due to the relative displacement of the MD 11 and the holder body 19 in the front-rear direction with the further insertion of the MD 11. In parallel with the pushing, the chevron 33 of the leaf spring 28 enters the locking hole 16 of the shutter 15 to be locked, and the chevron
33 also pushes the shutter 15 backward through the locking hole 16. M
When D11 is completely inserted into the holder main body 19, the shutter 15 completely opens the opening 14 of the cartridge 13.

When the MD 11 is ejected, the MD 11 moves in the direction B in the holder main body 19 and is ejected to the outside from the insertion / ejection opening 23 from the rear end. At this time, the chevron 33 is
Is held in the locking hole 16, the locking hole 16 moves from the open position to the closed position with the relative movement of the MD 11 with respect to the holder body 19, and closes the opening 14. When the shutter 15 moves to the closed position, the shutter 15 is locked in the closed position by the lock member, and is prevented from sliding with respect to the cartridge 13. Thereafter, as the MD 11 moves relative to the holder main body 19 in the B direction, the chevron is formed. 33 is separated from the locking hole 16 against the spring force of the leaf spring 28.

The rear fastening point 34 of the two fastening points 34
Hereinafter, this will be referred to as “reference engagement point 34”. When the chevron 33 is displaced rightward, that is, displaced away from the MD 11, the connecting portion 31 is displaced away from the right side wall 21 on the circular arc C <b> 1 centered on the reference fastening point 34. The chevron 33 is formed on the right side wall 21 on an arc C2 centered on the connecting portion 31.
Displaced away from Reference fastening point 34 is right wall 21
And the arcs C1 and C2 have their convex sides facing in opposite directions, and the displacement of the chevron 33 is
The cartridge 13 is displaced substantially rightward, that is, in a direction substantially perpendicular to the right side surface of the cartridge 13.

FIG. 2 is a view showing the acting force from the leaf spring 28 to the shutter 15 when the leaf spring 28 is bent. The displacement of the chevron 33 is substantially in the horizontal direction. As a result, when the chevron 33 entrains the shutter 15 from its open position to its closed position, the acting force F1 from the leaf spring 28 to the shutter 15 is reduced by the locking hole. The direction is perpendicular to the slope on the contact side of the chevron 33 with the side edge of the shutter 16, and is close to the sliding direction of the shutter 15. Therefore, the frictional force between the cartridge 13 and the shutter 15 when the shutter 15 slides is reduced as compared with the case of the MD holder 70 in FIG.

FIG. 3 shows a cartridge when the front right corner of the cartridge 13 abuts the chevron 33 while the MD 11 is being inserted.
The acting force F2 from the thrust 13 to the chevron 33 and the displacement direction R2 of the chevron 33 are shown. In this contact, the angled projection 33 is displaced on the arc R2 centered on the connecting portion 31 by F2 when viewed from the holder main body 19, that is, displaced obliquely forward. As a result, the right front corner of the cartridge 13 is displaced. Without cutting into the chevron 33
The cartridge 13 advances smoothly.

FIG. 4 shows the acting force F3 from the locking hole 16 to the chevron 33 and the displacement direction R3 of the chevron 33 when the chevron 33 is disengaged from the locking hole 16 while the MD 11 is being ejected. In this disengagement, the chevron 33 is displaced on an arc centered on the reference fastening point 34 by F3, that is, displaced obliquely rearward. As a result, the rear side edge of the locking hole 16 does not bite into the chevron 33. ,
The cartridge 13 moves backward smoothly.

FIG. 5 is a perspective view of another leaf spring 28. FIG.
In the leaf spring 28 (hereinafter, referred to as “second leaf spring 28”), the same parts as those of the leaf spring 28 (hereinafter, referred to as “first leaf spring 28”) in FIG. Only the differences will be described. The rear end of the return portion 32 is an upright portion 38 projecting upward. The bent portion 39 is bent from the extending portion 30 and faces the upright portion 38, and by contact with the upstanding portion 38, the amount of bending of the return portion 32 toward the cartridge 13, i.e., by the chevron 33 Limit bias. With this restriction, the frictional force when the chevron 33 slides on the right side surface of the cartridge 13 and the side surface of the shutter 15 is reduced, and the MD 11 moves smoothly. Further, the right front corner of the cartridge 13 when the MD 11 is inserted comes into contact with the chevron 33, the insertion force required to warp the chevron 33, and the chevron 33 is released when the MD 11 is ejected. The discharge force of the MD 11 required to disengage from the locking hole 16 can also be reduced. Also, since the tip of the leaf spring 28 is thin, it can be used as a single leaf spring during assembly, etc.
Although there is a possibility of deformation, the deformation can be prevented by providing the stopper.

FIG. 6 is a perspective view of the third leaf spring 28. Only the differences from the first leaf spring 28 will be described. The two extending portions 30 extend in the front-rear direction parallel to each other while forming a cutout window 42 therebetween, and are respectively connected to the upper and lower ends of the connecting portion 31 at the rear ends. The return portion 32 is disposed in the cutout window 42 while leaving a vertical space between the return portions 32 and is connected to the connecting portion 31 at the rear end. In the third leaf spring 28, the connecting portion 31 is connected to the extending portion 30 at the upper and lower ends and is in a double-supported state, so that the return portion 32 is twisted when the chevron 33 is displaced. Can be suppressed.

FIG. 7 is a perspective view of the fourth leaf spring 28. Only the differences from the first leaf spring 28 will be described. Leaf spring
28 is manufactured by integral molding of the holder body 19, and the right side wall 21
It is integrated into. Therefore, the leaf spring 28 is
The time and effort required to mount the device can be eliminated.

FIG. 8 shows an MD holder which is replaced with a leaf spring 28.
50 is a perspective view of 50. FIG. The first arm 54 has bosses 51 and 55 at front and rear ends, respectively. First axis 53 and second axis
Are also the center lines of the bosses 51 and 55, respectively, and extend vertically in parallel with each other. The pin holes 52, 57 are respectively formed along the first axis 53 and the second axis 58 with the bosses 51,
55 penetrates vertically. A predetermined pin is inserted into the pin hole 52
To support the first arm 54 on the right side wall 21 so as to be rotatable about the first axis 53. The second arm 60 has a boss 56 at the rear end, and has a shaft portion 61 hanging from the lower surface at the front end. The bosses 55, 56 are arranged in a vertical relationship with their center lines aligned. The first pin,
(Not shown) is inserted into the pin hole 52 and the boss 51 is
It is rotatably connected to and supported. Second pin (not shown)
Are the pin holes 57 of the boss 55 and the pin holes of the boss 56 (not shown)
The bosses 55 and 56 are relatively rotatably and inseparably coupled to each other. The torsion spring 64 is fitted with the winding portion at the lower end of the boss 51, and applies both ends to the right side wall 21 and the shaft portion 61 to urge the shaft portion 61 inward in the left-right direction of the holder body 19. The first arm 54 rotates about the first axis 53 in the R4 direction, and the second arm 60 rotates about the second axis (57) 58 in the R5 direction. Also in this MD holder 50,
R4 and R5 have the convex sides opposite to each other, so that the convex portions are displaced substantially in the left-right direction when viewed from the holder main body 19, and the MD holder 50 is also provided with the aforementioned leaf spring 28.
The same effect can be exerted.

[Brief description of the drawings]

FIG. 1 is a perspective view of an MD holder shown in an inserted state of the MD.

FIG. 2 is a view showing an acting force from a leaf spring to a shutter when the leaf spring is bent.

FIG. 3 is a diagram illustrating an acting force F2 from the cartridge to the chevron and a displacement direction R2 of the chevron when the front right corner of the cartridge contacts the chevron during insertion of the MD.

FIG. 4 is a diagram showing an acting force F3 on the chevron from the locking hole and a displacement direction R3 of the chevron when the chevron comes off from the locking hole during ejection of the MD.

FIG. 5 is a perspective view of another leaf spring.

FIG. 6 is a perspective view of a third leaf spring.

FIG. 7 is a perspective view of a fourth leaf spring.

FIG. 8 is a perspective view of an MD holder that is replaced with a leaf spring.

FIG. 9 is a perspective view of a conventional MD holder with an MD inserted.

FIG. 10 is a diagram showing the acting force from the leaf spring to the shutter when the leaf spring is bent in the MD holder of FIG. 9;

FIG. 11 shows a state in which the MD is inserted into the MD holder shown in FIG.
FIG. 14 is a diagram illustrating an acting force F2 from the cartridge to the chevron and a displacement direction R5 of the chevron when the right front corner of the cartridge contacts the chevron.

FIG. 12 shows a state in which the MD is being discharged in the MD holder of FIG.
It is a figure which shows the acting force F3 from a locking hole to a chevron, and the displacement direction R6 of a chevron when a chevron removes from a locking hole.

FIG. 13 shows a conventional M in which the MD holder of FIG. 9 is partially modified.
It is a perspective view about the holder for D.

14 is a diagram showing a state of the MD holder of FIG. 13 when a leaf spring is not bent and when it is bent.

FIG. 15 is a diagram showing the acting force F2 from the cartridge to the chevron and the displacement direction R7 of the chevron when the right front corner of the cartridge comes into contact with the chevron during insertion of the MD in the MD holder of FIG. It is.

16 is a diagram showing an acting force F3 from the locking hole to the chevron and the displacement direction R8 of the chevron when the chevron disengages from the locking hole during MD ejection in the MD holder of FIG. .

[Explanation of symbols]

Reference Signs List 10 MD holder (disc cartridge holder) 13 cartridge (disc cartridge) 15 shutter 16 locking hole 19 holder body 23 insertion / extraction opening 28 leaf spring 29 abutting part (joining part) 30 extension part 31 communication part 32 return part 33 chevron Projection (convex portion) 38 Upright portion (stopper portion) 39 Bend portion (stopper portion) 50 MD holder (disk cartridge holder) 51 Boss (coupling portion) 53 First axis 54 First arm (first Arm) 57 second axis 60 second arm (second arm) 64 torsion spring (biasing means) 65 convex part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor, Kazushi Nakamura 1-16-1 Dogenzaka, Shibuya-ku, Tokyo Inside Kenwood Corporation (72) Inventor Hisanori Togawa 1-16-16, Dogenzaka, Shibuya-ku, Tokyo Stock Company Kenwood

Claims (5)

[Claims] A leaf spring (28) is provided, and a convex portion (33) of the leaf spring (28) is provided with a disc cartridge (1) to a holder body (19).
In the insertion process of (3), the disk cartridge (13) is resiliently inserted into a locking hole (16) of a shutter (15) of the disk cartridge (13) with relative displacement with the disk cartridge (13), and The disc cartridge (13) is locked in the locking hole (16) with a predetermined locking force in the moving direction of the disc cartridge (13), and in the process of discharging the disc cartridge (13) from the holder body (19). With the relative displacement of the shutter (15), the shutter (15) is moved from the open position to the closed position, and after the movement of the shutter (15) to the closed position, the shutter (15) is opposed to the elastic force from the locking hole (16). In the disk cartridge holder (10) adapted to be detached, the insertion direction and the ejection direction of the disk cartridge (13) are defined as a first direction and a second direction, respectively, and the leaf spring (28) , A coupling part (29) coupled to the holder body (19), and this coupling (29) an extending portion (30) extending in the second direction; and a leading end of the extending portion (30), which continues in the first direction from the leading end and returns to a predetermined return position. A disc cartridge holder having a return portion (32) having a convex portion (33). The leaf spring (28) has a stopper (38, 39) for limiting the amount of displacement of the projection (33) toward the locking hole (16) of the shutter (15). 2. The disk cartridge holder according to claim 1, wherein the holder is provided. 3. The leaf spring (28) is connected to the extended portion (30).
And the two extending portions (30) extend parallel to each other, and the connecting portion (31) interconnects the tips of the two extending portions (30), and the return portion (32) is located between both extending portions (30), and has a proximal end connected to the connecting portion (31), and returns from the connecting portion (31) in the first direction. 3. The disk cartridge holder according to claim 1, wherein: 4. The leaf spring (28) is connected to the holder body (19).
The disk cartridge holder according to any one of claims 1 to 3, wherein the holder is formed integrally with the disk cartridge. 5. A projection (65), wherein the projection (65) is attached to the holder body (19) in a process of inserting the disc cartridge (13) with a relative displacement with the disc cartridge (13). The disk cartridge (13) is elastically inserted into a locking hole (16) of a shutter (15), and the locking hole (16) is moved with a predetermined locking force in a moving direction of the disk cartridge (13). In the process of ejecting the disc cartridge (13) from the holder body (19), the shutter (15) is moved from the open position to the closed position with the relative displacement with the disc cartridge (13). Move the shutter to the closed position
After the movement of (15), the disc cartridge holder is configured to come off from the locking hole (16) against the elastic force.
In (10), a holder main body (19) into which a disc cartridge (13) is inserted and ejected from an insertion opening (23), a first parallel with a thickness direction of the disc cartridge (13).
The holder body so that it can rotate around the axis (53) of the holder body.
A first arm (54) coupled to (19) and having a distal end extending toward the insertion / extraction opening (23); a second axis (57) parallel to the first axis (53); A second arm (60) having a base end side rotatably connected to a distal end side of the first arm (54) and having the protrusion (65) at a predetermined return position; and (65) the disk cartridge
A disc cartridge holder having a biasing means (64) for biasing toward (13).