JP3443044B2 - Disk storage magazine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc storage magazine for securely holding a tray in a magazine.

[0002]

2. Description of the Related Art In recent years, multi-type CD players capable of continuously playing a plurality of CDs have become widespread.
In a magazine used in such a multi-type CD player, a plurality of trays for storing discs are stored. When removing the disc,
The tray is being rotated or slid from within the magazine.

FIG. 1 shows an example of a conventional slide type tray, in which a tray main body 1 is provided with a disc accommodating portion 3 which is matched to the shape of a disc 2. The diameter of the disc accommodating portion 3 is slightly larger than the diameter of the disc 2 so that the disc 2 can be taken out easily. In addition, recesses 4a to 4d are formed at the corners of the tray body 1. Since these recesses 4a to 4d are positioned lower than the disc 2 placed in the disc storage portion 3, the edges of the disc 2 in the disc storage portion 3 can be caused from the recesses 4a or 4c. It is like this. A clamp hole 5 is formed in the central portion of the tray body 1 so that a turntable (not shown) can pass through during the clamping.

In the recesses 4b and 4d of the tray body 1, disk holding members 6a and 6b are rotatably arranged with a shaft 7 as a fulcrum. Each disk holding member 6a, 6b is urged clockwise by a spring member 8.

An L-shaped holding portion 9a and a bifurcated holding portion 9b are provided at the ends of the disc holding members 6a and 6b, respectively. The bifurcated holding portion 9b has a function of pressing and sandwiching the outer peripheral edge portion of the disk 2,
The L-shaped holding portion 9a has a function of pressing the outer peripheral edge portion of the disk 2 and preventing it from rising.

In the tray having such a structure, the disc 2
When the disc is placed in the disc housing portion 3, for example, the outer peripheral edge portion of the disc 2 is held by the disc holding member 6b with the disc holding member 6a rotated clockwise against the urging force of the spring member 8. Fit in the portion 9b. In this state, the disc 2 is dropped into the disc accommodating portion 3, and the disc holding member 6a is returned to the fixed position by the biasing force of the spring member 8.

As a result, the disk holding members 6a, 6
Since b presses the outer peripheral edge portion of the disk 2 in a direction in which they face each other as indicated by an arrow, the disk 2 is held in a stable state in the disk housing portion 3.

On the other hand, when the disk 2 placed in the disk accommodating portion 3 is taken out, the disk holding member 6a is rotated clockwise to release the holding state of the disk 2 in the same manner as described above. Disc 2 from housing 3
Can be taken out.

Further, as described above, such a tray is housed in a magazine (not shown) so that it can be pulled out.

[0010]

The above-mentioned conventional tray is housed in the magazine so that it can be pulled out, but the tray is securely held in the magazine so that the tray does not accidentally pop out of the magazine. There is a need to. Further, the tray to be pulled out must be easily taken out.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a disc storage magazine capable of reliably holding the trays stored in the magazine.

[0012]

In order to achieve the above object, the present invention provides a disc storage magazine in which a plurality of trays are retractably stored in a magazine case, and the tray is provided in the magazine case. A spring member for urging the held member and a fixing member for abutting the held member by the urging of the spring member are provided, and the tray has a spring at an abutting portion where the held member and the fixing member abut. It is characterized in that it can be held by receiving the biasing force of the member.

[0013]

In the disc storage magazine of the present invention, the trays stored in the magazine case can be securely held.

Therefore, it is possible to prevent the tray from accidentally jumping out of the magazine case due to external vibration or the like. Further, since the tray is held by the elastic force of the spring, the tray to be pulled out can be easily pulled out by pulling it out with a force greater than the elastic force of the spring.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the drawings described below, parts common to those in FIGS. 1 and 2 are designated by the same reference numerals, and duplicated description will be omitted.

FIG. 3 shows an embodiment of the disc tray of the present invention. As shown in FIG. 4, the disc holding member 6a provided in the recess 4b of the tray body 1 has a holding portion 9a. It is adapted to be rotated to a position where it does not contact the outer peripheral edge portion of 2. Therefore, this holding portion 9
“A” does not apply a pressing force to the disc 2, but merely serves to prevent the disc 2 from rising.

Protrusions 3a and 3b are provided on the inner peripheral edge of the disc accommodating portion 3 of the tray body 1 near the disc holding member 6a so as to contact the outer peripheral edge of the disc 2.

On the front side of the tray body 1, the tray body 1
There is provided an engagement piece 11 with which an engagement claw of a loading mechanism (not shown) is engaged when the paper is pulled out from the magazine 20. On the rear side of the tray body 1, an engaging protrusion as a held member having an engaging protrusion 12 engaged by a tray protrusion preventing claw 26 described later and an engaging step portion 13b engaged by a spring member 27. 13 are provided. On the rear side of the tray body 1, a positioning protrusion 2 described later is provided.
Guide grooves 14 and 15 as held members that are positioned by 3, 24 are provided.

In the tray having such a structure, the disk 2
When the disc is held in the disc holding portion 3, the outer peripheral edge portion of the disc 2 is held in the holding portion 9b of the disc holding member 6b with the disc holding member 6a rotated clockwise against the urging force of the spring member 8. Fit in. In this state, the disc 2 is dropped into the disc accommodating portion 3, and the disc holding member 6a is returned to the fixed position by the biasing force of the spring member 8.

At this time, with the holding portion 9a of the disc holding member 6a separated from the outer peripheral edge portion of the disc 2, and the holding portion 9a being positioned above the outer peripheral edge portion of the disc 2,
The rotation of the disc holding member 6a stops. On the other hand, the holding portion 9b of the disc holding member 6b gives a pressing force to the disc 2 in the arrow direction.

As a result, the outer peripheral edge of the disk 2 on the side of the disk holding member 6a is pressed against the projections 3a and 3b, so that the disk 2 is held in the disk housing 3 by the holding portion 9b of the disk holding member 6b and the projection 3a. , 3b will be supported at three places.

FIGS. 5 to 7 show a magazine for accommodating the tray main body 1 in multiple stages. The magazine main body 20 has a notch portion 21 for exposing the engaging piece 11 of the tray main body 1. Is provided. This notch 21
Corresponds to the vertical movement of the reproducing mechanism side (not shown) when the disc 2 is selected, and the optimum shape for the engaging claws of the loading mechanism to move up and down in the notch 21. It is said that.

Inside the magazine body 20, the tray body 1
Guide pieces 22 for guiding the insertion of the tray main body 1 and holding the inserted tray main body 1 in a horizontal state are arranged in multiple stages.

Positioning projections 23 and 24 as fixing members fitted in the guide grooves 14 and 15 are provided at the innermost portion of the magazine body 20 so as to project therefrom. Here, the position where the positioning protrusion 23 is arranged is closer to the spring member 27 described later for the reason described later.

In the vicinity of the positioning protrusion 23, the shaft 2
5 are provided. The shaft 25 has a tray body 1
The tray protrusion preventing claws 26 corresponding to the number of stored sheets are rotatably attached. When any one of the tray bodies 1 is taken out from the magazine body 20, only the tray protrusion preventing claw 26 corresponding to the tray body 1 is rotated,
Since the rotation of the other tray protrusion preventing claw 26 is prevented, the protrusion of the other tray body 1 from the magazine body 20 is prevented.

Tray protrusion preventing claw 26 and positioning protrusion 23
A spring member 27 for urging the engaging projection 13 of the tray body 1 in the right direction in the drawing is disposed between the and. By the biasing force of the spring member 27, the tray body 1 pushed to the position just before the innermost part of the magazine body 20 is pulled to the innermost part as described later.

In the magazine having such a structure, when the tray body 1 is housed inside the magazine body 20, the tray body 1 is inserted along the guide pieces 22 as shown in FIG. At this time, the tray protrusion preventing claw 26 is rotated counterclockwise so as not to interfere with the insertion of the tray body 1.

When the tray main body 1 is pushed to the vicinity of the innermost portion of the magazine main body 20, the inclined side of the engaging projection 13 comes into contact with the spring member 27. In this state, the guide grooves 14 and 15 of the tray body 1 are fitted into the positioning protrusions 23 and 24 shallowly.

When the tray main body 1 is further pushed in from this state, the engaging projection 13 is biased in the direction of the arrow by the spring member 27, so that the tip portion 13a of the engaging projection 13 is pressed against the positioning projection 23. As a result, the point of action of the biasing force of the spring member 27 is the tip portion 1 of the engagement protrusion 13.
3a and the engaging projection 13 are brought into contact with each other, and the spring member 27
The tray body 1 is pushed into the magazine body 20 in a state where the tray body 1 is kept in a fixed posture without being rotated.

When the tray body 1 is pushed to the position just before the innermost portion of the magazine body 20 from this state, the spring member 27 moves over the inclined side of the engaging projection 13 and moves to the locking step portion 13b side. Since the pulling force acts on the tray body 1 as the spring member 27 moves over the inclined side, the tray body 1 is automatically pulled in immediately before the innermost portion of the magazine body 20.

At this time, the tray protrusion preventing claw 26 is rotated clockwise to engage with the engaging projection 12 to prevent the tray main body 1 from moving in the protruding direction. Also,
Since the engagement protrusion 13 is pressed in the direction of the arrow in the drawing by the urging force of the spring member 27, rattling of the tray body 1 inside the magazine body 20 is also prevented.

Now, the retracting of the tray body 1 by the spring member 27 immediately before the innermost portion of the magazine body 20 will be described.

First, as shown in FIG. 10, the case where the positioning protrusion 23 is not provided will be considered. However,
In the following description, F: spring force (Fx and FY are their x and y components) N1 and N2: drag force from the magazine guide surface μ: friction coefficient between magazine and tray K: friction force between spring and tray ( Kx and KY are their x and y components).

When formulating the balance of forces, in the x direction, -Fx -Kx + N1 -N2 = 0 In the y direction, FY -KY -μN1 -μN2> 0 The moment around the origin is -B1 N1 -a1 μN1 + b2 N2 -a2 μN2 = 0 Becomes

When numerical values were actually put in the above equations for calculation, as shown in FIG. 12, the friction coefficient μ between the magazine and the tray had to be 0.43 or less.

On the other hand, as shown in FIG. 11, when the positioning protrusion 23 is provided, the urging force of the spring member 27 can be received by the joint between the positioning protrusion 23 and the engaging protrusion 13, so that the magazine body 20 can be received. Since the rotation of the tray body 1 inside becomes as small as possible, the N2 component, which is the drag force on the inner surface of the magazine body 20, can be eliminated.
As shown in, μ can be set to 1.33 or less.

As described above, in this embodiment, the urging force of the holding portion 9b of the disc holding member 6b with respect to the disc 2 is set to the two protrusions 3 provided on the inner peripheral edge of the disc housing portion 3.
Since it is configured to be received by the a and 3b, the disc 2 is held in the disc holding portion 9 of the disc holding member 6b.
It can be supported at three places by b and the protrusions 3a and 3b.

Therefore, the disk 2 due to external vibration or the like
Since it can be prevented from moving in any direction on the horizontal plane, rattling of the disk 2 held in the tray is surely prevented.

Further, in this embodiment, the positioning projection 23 for positioning and guiding the guide groove 14 of the tray body 1 is provided.
Is provided in the vicinity of the spring member 27, and the biasing force of the spring member 27 is received by the joint between the positioning protrusion 23 and the engaging protrusion 13.

Therefore, since the rotation of the tray body 1 inside the magazine body 20 can be minimized,
The N2 component, which is the drag force on the inner surface of the magazine body 20, can be eliminated, and as shown in FIG. 12, μ can be set to 1.33 or less.

As a result, even if the pulling force by the spring member 27 is reduced, the tray main body 1 can be reliably pulled in.

In this embodiment, the case where the locking stepped portion 13b of the engaging projection 13 engaged by the spring member 27 is horizontal has been described, but the present invention is not limited to this example, and as shown in FIG. 13, for example. In addition, the shape may be such that the spring member 27 is inclined downward.

Further, in this embodiment, the protrusions 3a, 3 for contacting the outer peripheral edge of the disc 2 are provided on the inner peripheral edge of the circular disc accommodating portion 3 of the tray body 1 near the disc holding member 6a.
The case where b is provided has been described, but not limited to this example,
For example, as shown in FIG. 14, the abutting portion of the disc 2 may have a different curvature, and the outer peripheral edge of the disc 2 may abut at the changed curvature portion.

[0044]

As described above, according to the disc storage magazine of the present invention, since the magazine case is provided with the spring member and the fixing member that engage with the held member provided on the tray, It is possible to prevent the tray from accidentally jumping out of the magazine case due to vibration or the like. Further, since the tray is held by the elastic force of the spring, the tray to be pulled out can be easily pulled out by pulling it out with a force greater than the elastic force of the spring.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a conventional disc tray.

FIG. 2 is a cross-sectional view for explaining a state in which each disc holding member of FIG. 1 is in contact with the outer peripheral edge portion of the disc.

FIG. 3 is a diagram showing an embodiment of a disc tray of the present invention.

FIG. 4 is a cross-sectional view for explaining how the disc holding members shown in FIG. 3 are arranged on the outer peripheral edge of the disc.

FIG. 5 is a plan view showing a magazine for storing the tray of FIG.

FIG. 6 is a side view showing the magazine of FIG.

FIG. 7 is a cross-sectional view showing the magazine of FIG.

FIG. 8 is a diagram for explaining an operation when the tray of FIG. 3 is stored in a magazine.

FIG. 9 is a diagram showing a state where the tray of FIG. 3 is completely stored.

10 is a view for explaining drawing of the tray by the spring member of FIG.

FIG. 11 is a view for explaining drawing of the tray by the spring member of FIG.

12 is a diagram showing the relationship between the position of the guide protrusion of FIG. 3 and the limit friction coefficient.

FIG. 13 is a diagram showing another embodiment in which the shape of the locking step portion of the engaging projection engaged by the spring member of FIG. 3 is changed.

FIG. 14 is a diagram showing another embodiment in which the shape of the inner peripheral edge of the disc storage portion of FIG. 3 is changed.

[Explanation of symbols]

1 tray body 2 discs 3a, 3b protrusion 11 engagement piece 6a, 6b disk holding member 9a, 9b holding part 13 Engagement protrusion 14,15 guide groove 20 magazine body 23, 24 Positioning protrusion 27 Spring member

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G11B 17/26 G11B 23/02

Claims (4)

(57) [Claims] 1. A disk storage magazine that stores a plurality of trays in a magazine case so that the trays can be drawn out freely. In the magazine case, a spring member for urging a held member provided in the tray, and the spring member. Is provided with a fixed member that abuts the held member by the urging of the holding member, and the tray can be held by receiving the urging force of the spring member at the abutting portion where the held member and the fixing member abut. A disc storage magazine characterized by: 2. The fixing member is disposed on a surface of the magazine case facing the opening so as to project toward the opening, and engages with a concave portion of a held member provided on the tray. The disc storage magazine according to claim 1, wherein: 3. The spring so that the biasing force of the spring member on the held member acts in the tray pull-in direction of the magazine case when the tray is completely housed in the magazine case. 3. The disk storage magazine according to claim 1, wherein a member biases the held member. 4. The holding member contacts the held member after the spring member biases the held member provided on the tray in the tray storing process. Alternatively, the disc storage magazine described in 2.