JPH08203177A - Cassette loading device - Google Patents

Abstract

PURPOSE: To simplify the positioning structure of a cassette by using a tray provided with a recessed part to be engaged with a projecting part. CONSTITUTION: The projecting part 24a is provided on the surface for placing a cassette half 24, and a recessed part 23b to be engaged with the projecting part 24a is formed on the tray 23. Thus, the positioning is attained by only inserting the cassette half 24 to the tray 23 with a simple structure. So, the cassette half is surely housed in the tray 23 by only utilizing the outside shape of the cassette half 24, and also the cassette half 24 is surely pulled in the specified position by the tray 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette loading device applied when a compact cassette is loaded horizontally.

[0002]

2. Description of the Related Art A conventional horizontal type cassette loading device is disclosed in, for example, Japanese Patent Laid-Open No. 56-44146 and Japanese Patent Laid-Open No. 63-14359.
Although there are issues such as a tape playing mechanism on the loading base, many types include a tray, tape retainer, and a tape loading plate that incorporates a dedicated loading motor.

A conventional cassette loading device will be described below with reference to the drawings. FIG. 40 is a perspective view schematically showing a conventional cassette loading device.
Reference numeral 101 denotes a housing, which indicates the arrangement of the loading mechanism. Case 1
In order to supply the cassette 103 to the tape playing mechanism 102 provided inside 01 for playing, the tape loading tray 104 is provided, and by the force of the dedicated motor 105 provided on the loading board 106, the tape loading tray 1
04, the tape retainer 107, and the tape mounting plate 108 are driven in the directions of the arrows to supply and remove the cassette 103 to and from the tape playing mechanism 102.

[0004]

However, the tape mounting plate 108 is required to position the cassette 103 on the tape mounting tray 104, and the structure for positioning the cassette 13 on the tray 108 is not simple. Further, the structure of the conventional example in which the cassette is positioned by hooking the hooking member on the reel hole of the cassette is also complicated.

Therefore, an object of the present invention is to provide a cassette loading device which can simplify the cassette positioning structure.

[0006]

According to another aspect of the present invention, there is provided a cassette loading device for mounting a cassette having a convex portion on a mounting surface, the tray having a concave portion for fitting the convex portion, and the tray. And a cassette loading mechanism having a tray holder for driving the tray in and out.

The cassette loading device according to claim 2 is
2. The cassette according to claim 1, wherein the protrusions are provided on both sides of the front opening in the thickness direction, the tray stands up both side plates supporting both side faces of the cassette in the width direction, and the recess is the bottom of the tray. Is provided at the front end of the tray in the retracting direction,
Further, it has supporting pieces for supporting the front surfaces of both ends of the cassette in the width direction.

[0008]

According to the cassette loading apparatus of the first aspect, since the convex portion is provided on the mounting surface of the cassette and the concave portion for fitting the convex portion is formed on the tray, the cassette can be simply inserted into the tray with a simple structure. Positioning is possible, and therefore, the cassette can be reliably stored in the tray only by using the outer shape of the cassette, and the cassette can be reliably pulled to the fixed position by the tray.

According to the cassette loading apparatus of the second aspect, in addition to the operation of the first aspect, the convex portions of the cassette are provided on both sides in the thickness direction of the front opening, and the concave portion is formed at the front end in the retracting direction of the tray. Since the magnetic head does not obstruct the opening on the front of the cassette facing the magnetic head, the tray supports both side surfaces in the width direction of the cassette. Since the plate is erected, the tray can be reliably positioned and the wall on the front end side of the tray can be eliminated, so that the cassette can be easily inserted into the tray.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cassette loading apparatus according to an embodiment of the present invention will be described with reference to FIGS. That is, in this cassette loading device, as shown in FIG. 37 and FIG.
A cassette having a cassette half 24, which is a cassette having 4a, and a tray 23 having a concave portion 23b into which the convex portion 24a is fitted, and a tray holder 18 (FIG. 3, etc.) for driving the tray 23 in and out. And a loading mechanism.

According to this embodiment, the cassette half 24
The protrusion 24a is provided on the mounting surface of the tray and the protrusion 24a is provided on the tray 23.
Since the concave portion 23b for fitting is formed, the cassette half 24 can be positioned by simply inserting the cassette half 24 into the tray 23 with a simple structure, and therefore the cassette half 24 can be reliably stored in the tray 23 only by using the outer shape of the cassette half 24. Besides, the cassette half 24 can be reliably pulled to the fixed position by the tray 23.

In particular, the convex portion 24a of the cassette half 24
Are provided on both sides in the thickness direction of the front opening, the recesses 23b are provided at the front end of the tray 23 in the pulling direction B (see FIG. 30, etc.), and the support pieces 23c are provided on the front surfaces of both ends of the cassette half 24 in the width direction. Since the magnetic head does not interfere with the opening of the front surface of the cassette half 24 that faces the magnetic head, both side plates 23d that support both side surfaces in the width direction of the cassette half 24 are erected on the tray 23. , Tray 23
Can be reliably positioned and the wall on the front end side opposite to the retracting direction (b) of the tray 23 can be eliminated, so that the cassette half 24 can be easily inserted into the tray 23.

In detail, FIG. 1 shows the cassette loading device of this embodiment applied to a cassette deck, and 1 is a tape playing mechanism, which is a bottom plate provided on the lower surface of a housing 2 of the cassette deck. It is mounted horizontally on the 3. 2a is a loading knob, 2
3 is a tray, and 24 is a cassette whose example is a cassette half.

In FIG. 2, the cassette loading device of this embodiment is applied to a radio-cassette, and a tape playing mechanism 1 is horizontally attached to a lower portion of a radio-cassette housing 4. 4a is a loading knob. In FIG. 3, reference numeral 5 denotes a chassis constituting the tape playing mechanism 1, a reel motor 6 for driving the tape reel of the tape playing mechanism 1 and the cassette loading device of this embodiment, and a cap for driving the tape playing mechanism 1. The stun motor 7 is attached.

The chassis 5 is attached to the tape playing mechanism 1 by screws 8. The tape playing mechanism 1 has a mounting hole 1a provided in the tape playing mechanism 1.
It is attached to the bottom plate 3 of the cassette deck or the housing 4 of the radio-cassette with screws 9 and 9. Reference numeral 10 denotes an intermediate gear which is composed of a large gear and a small gear and also serves as a decelerating member.
The large gear is configured to be inserted into the shaft portion 5a formed in the above and mesh with the gear 6a driven by the reel motor 6 by a known method.

In FIGS. 3 to 9, 11 is a large friction gear, which is attached to an upper portion of a small friction gear 12 rotatably attached to a shaft portion 5b formed on the chassis 5 so as to be able to rotate a fixed amount. . That is, as shown in FIG. 4 (b), the large friction gear 11 is overlapped with the small friction gear 12 and is rotatably held by the plurality of claws 12e, and the circular groove formed in the small friction gear 12 as shown in FIG. The stopper 11a of the large friction gear 11 is fitted to 12f so that it can rotate only within a certain range. Further, the winding portion of the friction spring 13 having an urging force in the direction in which the both ends 13a and 13a 'spread is fitted into the spring hook portion 12c formed on the upper portion of the small friction gear 12, and the both ends 13 of the friction spring 13 are
a and 13a 'are engaged with the L-shaped spring hook portions 12d and 12d' formed on the small friction gear 12, and two convex portions 11a and 1a are formed on the upper portion of the large friction gear 11 at all times.
1a 'is pressed to determine the rotational position of the large friction gear 11 relative to the small friction gear 12, and when the small friction gear 12 is stopped as shown in FIG. 5, the large friction gear 11 is driven in the direction of the arrow. Then, one end of the friction spring 13 is pushed and bent by the convex portion 11a of the large friction gear 11, and when the drive of the large friction gear 11 is released, the friction spring 13 returns to the position shown in FIG. The same applies when the large friction gear 11 is driven in the direction opposite to the arrow.

Reference numeral 14 denotes a drive rack, which is shown in FIGS.
In addition, as shown in FIG. 10, the upper surface has a ridge 14h guided by a rail 5f formed on the chassis 5, and the hook-shaped guide 5e provided on the chassis 5 engages the slit groove 14i. A drive rack 14 is provided so as to be movable in the arrow arrow direction along the rail 5f, and a small friction gear 12 rotated by a large friction gear 11 meshed with the small gear of the intermediate gear 10 and the drive rack 1
4 are engaged with each other and driven in the arrow arrow direction. Further, a side plate portion 14g for providing an auxiliary rack 19 (see FIG. 11) and a shaft portion 14c described later is provided upright on the side portion of the drive rack 14.

In FIG. 3, reference numeral 15 denotes a leaf spring attached to the chassis 5, which has a convex portion 14a provided at an end portion of the drive rack 14 when the drive rack 14 is driven in the arrow B direction. By pushing, a resistance force is applied to the end operation of the drive rack 14 in the arrow B direction, and conversely, a drive force is applied to the first operation of the drive rack 14 in the arrow A direction by the leaf spring 15, and the hook 16 described later is provided. It is configured to balance the drive load of the drive rack 14 in relation to the applied force.

Reference numeral 16 denotes a hook, which is attached so as to be rotatable about a shaft portion 5b provided on the side surface of the chassis 5 in the direction of the arrow honey. At the end position of the drive rack 14 in the direction of arrow B, one end 16a of the hook 16 abuts on the cam portion 14b of the drive rack 14, and the drive rack 14
Of the drive rack 14 is moved in the arrow arrow direction from the end position of the drive rack 14 in the arrow arrow direction to move the cam portion 14b in the arrow arrow direction. Push one end 16a of the
Is configured to rotate in the direction of arrow C.

Reference numeral 32 is a known leaf switch provided in the tape playing mechanism 1, and when the cassette half 24 is taken out from the mounted state in the tape playing mechanism 1, the hook 16 pushes the switch lever 33 in the direction of arrow C to make a leaf. It is configured to open the switch 32. 1
6A is hook 1 so that hook 16 rotates in the direction of arrow D
6 is a kick spring biased between the chassis 5 and the chassis 5, and when the one end 16a of the hook 16 is separated from the cam portion 14b by the movement of the drive rack 14 in the arrow B direction, the hook 16
Are urged to return.

The supporting force of the leaf switch 32 causes the hook 16 to rotate in the direction of arrow D by the driving rack 14.
The cam portion 14b of the drive rack 14 is pushed in the direction of arrow B
The leaf spring 15 is configured to cancel the self-propelled force by pushing the convex portion 14a of the drive rack. 16b is hook 1
6 is a hook portion formed at the other end of the tray 6, and is configured to engage with the convex portion 18a of the tray holder 18 by the rotation in the arrow D direction to prevent the tray holder 18 from rotating in the arrow E direction. There is.

Here, the tray holder 18 is axially supported by the bearing portion 17a of the holder 17 as shown in FIGS. 19 to 26, and the holder 17 is the bearing portion of the tape playing mechanism 1 as shown in FIGS. 13 to 18. Arrow h around 1g
It is attached so that it can be rotated in the F direction. Holder 1
As shown in FIGS. 13 to 18, reference numeral 7 denotes a substantially gate-like shape in which the arms extend forward from both sides, and shaft portions 17c pivotally supported by the bearing portion 1g are provided near the upper ends on both sides, and A holder spring (not shown) urges the tape playing mechanism 1 in the direction of opening it, that is, in the direction of arrow E.

Reference numeral 19 denotes an auxiliary rack, the structure of which is shown in FIG. 11 and the relationship with the drive rack 14 is shown in FIG. 12. The auxiliary rack 19 is a shaft portion provided on the side surface of the drive rack 14. It is provided so that it can rotate about 14c in the direction of the arrow torch and slide along the slot 19a in the direction of the arrow line. A hook-shaped hole 19b provided in the center of the auxiliary rack 19
The hook 14d provided on the rack 14 is engaged with the end surface of the drive rack 14, the hook 19c provided at one end is engaged with the end surface of the hook-shaped hole 14e provided on the drive rack 14, and the auxiliary rack 19 is driven by the drive rack 14. On the other hand, the auxiliary rack 19 can be rotated and slid by a certain amount, and the auxiliary rack 19 cannot be separated from the drive rack 14.

On the upper surface of the auxiliary rack 19, there are teeth 19d.
27 to 30, the lower surface 19e is supported by the supporting portion 17e of the holder 17 by meshing with the intermediate gear 20 that constitutes the gear portion pivotally supported by the shaft portion 17d of the holder 17, as shown in FIGS. It is configured so that the teeth do not skip. Here, (a) in FIG. 12 shows the relationship of the auxiliary rack 19 to the drive rack 14 in each state of FIG. 27, (b) of FIG. 28, and (c) of FIG. 29 and FIG.

On the other hand, the shaft portion 14c of the drive rack 14 is inserted through the cam groove 17b provided in the lower portion of the holder 17 and the elongated hole 19a of the auxiliary rack 19. The cam groove 17b is composed of a linear portion and a substantially Z-shaped portion at one end thereof. In the state of FIG. 27 in which the holder 17 is close to the tape playing mechanism 1, the linear portion is inclined with respect to the reciprocating direction of the drive rack 14 as shown in FIG. The middle portion of the substantially Z-shaped portion is substantially vertical. By the movement of the drive rack 14 in the arrow arrow direction, the shaft portion 14c moves in the middle portion of the substantially Z-shaped portion of the cam groove 17b, and the holder 17 moves the holder 17 to the bearing of the chassis 5 as shown in FIG. The holder 17 separates from the tape playing mechanism 1 until it rotates in the direction of the arrow h around the shaft portion 17c engaging with the portion 1g, and the straight portion of the cam groove 17b becomes parallel to the reciprocating direction of the drive rack 14. It is configured to do.

As shown in FIG. 27, the drive rack 1 is placed at a position where the holder 17 is closest to the tape playing mechanism 1.
The shaft portion 14c of No. 4 can move the end of the substantially Z-shaped portion of the cam groove 17b of the holder 17 aligned in the long hole 19a and the long hole 19a in the arrow B direction. By the operation in this range, the hook 16 rotates and the drive rack 1
The holder lock portion 14f provided on the No. 4 can be engaged with the upper surface of the support portion 17e provided on the inner surface of the side surface of the holder 17. When the shaft portion 14c moves in the cam groove 17b along with the movement of the drive rack 14 in the arrow A direction and the holder 17 rotates in the direction of the arrow E at the substantially Z-shaped portion, the auxiliary rack 1
9, the shaft portion 14c is positioned at one end of the elongated hole 19a as shown in FIG. 28, and the auxiliary rack 19 is rotated around the intermediate gear 20 while being meshed with the intermediate gear 20 as the shaft portion 14c is moved as shown in FIG. Is rotated, the lower surface of the auxiliary rack 19 opposite to the tooth side is supported by the groove of the support portion 17e of the holder 17 and parallel to the drive rack 14, and the shaft portion 14c of the drive rack 14 is aligned with the straight line of the cam groove 17b. When moving the unit, the auxiliary rack 19 is horizontally supported by the supporting unit 17e and slides in parallel to the drive rack 14, and the intermediate gear 20 rotates by this slide. It should be noted that horizontal support portions that support the lower surface of the auxiliary rack 19 parallel to the moving direction of the drive rack 14 may be provided side by side with the support portion 17e.

Next, the tray holder 18 has a substantially gate shape, and the shaft portions 18c provided on both sides are bearing portions 17 of the holder 17.
A tray holder spring 21 is provided although it is pivotally supported by a. This tray holder spring 21 is
The winding portion is passed through the shaft portion 18c of the, and one end is locked to the spring hooking portion 17b of the holder 17 and the other end is locked to the spring hooking portion 18d of the tray holder 18. Tray holder spring 21
Thus, the tray holder 18 is always rotated in the direction of the arrow E ', and the first stopper 18e formed at one end is a stopper formed in the holder 17 when the holder 17 is rotated in the direction of the arrow. It is configured to come into contact with 17 g and stop. In addition, the tray 2 is provided on the inner surface of the tray holder 18.
A ridge portion 18i for slidably supporting 3 is provided.

In FIG. 27, when the drive rack 14 moves from the end in the arrow B direction in the arrow A direction, the hook 16 rotates in the arrow C direction by the cam portion 14b and the engagement with the projection 18a of the tray holder 18 is released. The shaft portion 14c of the drive rack 14 abuts on the end of the elongated hole 19a of the auxiliary rack 19 in the arrow N direction. At the same time, it comes into contact with the upper end 17b 'of the cam groove 17b of the holder 17, and the state shown in FIG.

When the drive rack 14 is further moved in the direction of arrow A, the shaft portion 14c is substantially Z-shaped in the cam groove 17b of the holder 17.
The holder 1 is pressed by pushing the inclined portion 17b ″ which is the middle portion of the character-shaped portion.
Rotate 7 in the direction of arrow E. At the same time, the auxiliary rack 19 remains engaged with the intermediate gear 20, and the lower surface 19e is held by the holder 17
While being supported by the support portion 17d, it rotates in the direction of arrow T as shown in FIG. 29 and becomes parallel to the drive rack 14.

At this time, as the holder 17 rotates, the tray holder 18 rises so as to separate from the tape playing mechanism 1, the first stopper 18e separates from the stopper 17g of the holder 17, and the tray holder spring 21 causes the arrow to move. The second stopper 18g of the tray holder 18 comes into contact with the lower surface of the tape playing mechanism 1 and stops, although the second holder 18g tries to rotate in the direction of E. At this time, as shown in FIG. 29, the holder 17
And the angle θ formed by the chassis 1 and the tray 17 and the tray holder 1
The tray holder 1
8 rotates about the shaft 18c with respect to the angle θ ′ holder 17 against the force of the tray holder spring 21, and the tray holder 18 and the tape playing mechanism 1 are configured to be substantially parallel.

Reference numeral 22 is a drive gear forming a gear portion,
It is composed of two large and small tooth portions 22a and 22b and is axially supported by the shaft portion 17h of the holder 17, and the small tooth portion 22b is the intermediate gear 20.
The meshing tooth portion 22a is configured to mesh with the rack 23a formed on the lower surface of the tray 23. As shown in FIGS. 30 to 38, the tray 23 is provided with grooves 23i on both sides, and the projections 18i on the inner side surface of the tray holder 18 are engaged with the grooves 23i so that the trays 18 are provided inside the tray holder 18. It is provided so that it can slide in the arrow arrow direction.

Here, the tray holder 18 is the drive rack 1
4 is operated by interlocking means, and the interlocking means comprises an auxiliary rack 19 and an intermediate gear 20 and a drive gear 22 which form a gear part. 24 is a cassette half,
It is configured so that it can be stored inside the tray 23, as shown in FIG.
As shown in FIG. 8, the convex portion 24 a of the cassette half 24 is fitted and positioned in the concave portion 23 b provided on the bottom surface of the tray 23. 23j is a reel insertion hole.

Further, a roller spring is rotatably supported on a roller receiving portion 25a of a cassette pressing spring 25, which is a leaf spring provided on the upper portion of the tray holder 18, so that the surface of the cassette half 24 is constantly lowered. It is configured to press. Reference numeral 27 denotes a lid of an opening 2b provided on the front surface of the housing 2, which is rotatably supported on the housing 2 by a shaft portion 27a so as to be rotatable in the arrow direction, and is always closed by a lid spring 28 in the arrow direction. Is configured.

A lid raising piece 18 is provided at the front of the tray holder 18.
h is formed, and when the tray holder 18 is lifted as shown in FIG. 29, the lid raising piece 18h causes the shaft 27b of the lid 27 to move.
Is configured to open the lid 27 in the direction of the arrow
When the tray holder 18 is descending as shown in FIGS. 27 and 28, the front portion of the lid lifting piece 18h comes into contact with the stopper shaft 27c formed in the lower portion of the lid 27 and the lid 27 is pulled by an external force.
Is designed not to open in the direction of arrow o.

When the drive rack 14 is further driven in the direction of arrow A as shown in FIG. 30, the auxiliary rack 19 moves to the intermediate gear 20.
Drive gear 22 that engages with the intermediate gear 20
The tray 23 is configured to be driven in the arrow A direction so as to protrude from the opening 2a of the housing 2 under the lid 27 pushed up by the lid raising piece 18h of the tray holder 18. When the cassette half 24 is taken out in the state shown in FIG. 30 and a new cassette half 24 is supplied onto the tray 23, FIG.
7 and the convex portion 2 of the cassette half 24 as shown in FIG.
The convex portion 24a of the cassette half 24 is positioned between the concave portion 23b of the tray 23 and the supporting piece 23c formed so that the tray 4a can be inserted, and the position of the cassette half 24 with respect to the tray 23 is determined. Reference numeral 23d denotes both side plates that support both side surfaces of the cassette half 24. Specifically, the cassette half 24
Convex portions 24a are provided on both sides in the thickness direction of the front opening facing the magnetic head, the tray 23 stands up both side plates 23d for supporting both side surfaces of the cassette half 24 in the width direction, and the concave portion 23b is The bottom of the tray 23 is provided with a support piece 23c which is provided in a stepped manner at the front end of the tray 23 in the pulling-in direction B and which supports the front surfaces of both ends of the cassette half 24 in the width direction.

As shown in FIGS. 27 to 30, 29,
29 'indicates that when the drive rack 14 advances in the direction of arrow a,
And a switch for detecting the position at the end when the arrow 23 advances in the arrow B direction, the drive rack 14 is driven to the end in the arrow A direction, and the tray 23 advances in the arrow A direction,
When protruding from the opening 2a of the housing 2, the detection switch 2
9 is pushed under the drive rack 14.

At this time, the reel motor 6 has a circuit structure in which the drive rack 14 is momentarily driven in a direction to drive the drive rack 14 in the arrow B direction. As shown in FIGS. 4 and 5, the drive rack 14 is driven in the arrow A direction. At this time, the load on the drive rack 14 causes the large friction gear 11 to rotate a certain amount with respect to the small friction gear 12, causing the friction spring 13 to rotate.
However, when the reel motor 6 momentarily rotates in the direction of driving the drive rack 14 in the arrow B direction, the small friction gear 12 and the large friction gear 11 are within a certain play range. And large friction gear 1
1 is returned and the drive gear small 12 stops the drive rack 14 in a range where it is not driven.

Therefore, the reel motor 6 is not transmitted to the small friction gear 12 within the play range of the large friction gear 11 and the small friction gear 12. At this time, if the tray 23 is manually pushed in the direction of arrow B, it can be pushed in with a light force without being affected by the load of the reel motor 6, and when the detection switch 29 is turned off, the reel motor 6 is automatically pushed. The rotation of the reel motor 6 is stopped when the drive rack 14 pushes the detection switch 29 'by rotating 23 in the direction of arrow B.

In the state shown in FIG. 30, when the cassette half 24 is mounted on the tray 23 and the loading knobs 2a and 4a are pushed, the reel motor 6 is rotated and the tray 23 is driven in the arrow B direction and is housed inside the housing 2. , From the state shown in FIG. 29 to the state shown in FIG.
4 is mounted on the tape playing mechanism 1. At this time, the mounting force of the cassette half 24 to the tape playing mechanism 1 is the force of the cassette pressing spring 25, and is pressed by the roller 26 so that the upper surface is not damaged when the cassette half 24 is stored in the arrow B direction. Is configured.

From the state shown in FIG. 28, the drive rack 14 is further added.
Is driven in the direction of arrow B, as shown in FIG.
The holder lock part 14f of No. 4 is the support part 17e of the holder 17
While pushing the upper part of the, the shaft portion 14c of the drive rack 14 is driven in the elongated hole 19a of the auxiliary rack 19 in the arrow B direction,
The detection switch 29 'is pushed and stopped.
Therefore, the holder 17 is prevented from rotating in the arrow E direction by the support portion 17e and the lock portion 14f of the drive rack 14, and the tray holder 18 is moved in the arrow E direction by the first stopper 18e further pressing the stopper 17g of the holder 17. The rotation is locked, and the cassette half 24 is mounted on the tape playing mechanism by the roller 26 by the force of the cassette pressing spring 25 and starts playing.

The operation of the cassette loading apparatus according to the embodiment of the present invention constructed as above will be described. That is, as shown in FIGS. 1 and 2, when the cassette half 24 is inserted into the tray 23 and the loading knobs 2a and 4a are operated, the reel motor 6 rotates and the intermediate gear 10,
Large friction gear 11 and small friction gear 12
Rotates and the rack 14 is driven in the direction of arrow a.

At this time, until the stopper 11a of the large friction gear 11 comes into contact with the end of the arc-shaped groove 12f which constitutes the stopper of the small friction gear 12 by bending the friction spring 13 a little, the small amount of friction gear 12 is kept. The large friction gear 11 rotates and absorbs the mechanical load at the time of starting, and then the drive rack 14 is driven in the arrow A direction from the position of the starting end. Next, the hook 16 is rotated in the arrow C direction by the cam portion 14b of the drive rack 14, and the states shown in FIGS. 27 to 28 are obtained. The driving load at this time is balanced by the force of the rack 14 in the direction of arrow a generated when the leaf spring 15 moves down the rack convex portion 14a.

Further, at this time, as shown in FIG. 27 to FIG. 28 or FIG. 39 (a) to (b), the holder 17 is in the position rotated in the F direction, and the auxiliary rack 19 is composed of the intermediate gear 20 and the holder 17. The support portion 17e is sandwiched between the support portions 17e and rotated in the arrow direction (FIG. 12A), and the shaft portion 14c provided on the side surface of the drive rack 14 is the end of the elongated hole 19a of the auxiliary rack 19 in the arrow direction. And the cam groove 17 of the holder 17
It moves in the arrow a direction to the end 17b 'at the upper part of the substantially Z-shaped part of b (FIG. 12 (b)), and the holder lock part 14b of the drive rack 14 is disengaged from the upper part of the support part 17e of the holder 17 in the arrow a direction. .

When the drive rack 14 is further driven in the direction of arrow a, the shaft portion 14c of the drive rack 14 pushes the inclined portion 17b "in the middle of the substantially Z-shaped portion of the cam groove 17b of the holder 17 to move the holder 17 to the arrow h direction. At the same time, while the auxiliary rack 19 is still engaged with the intermediate gear 20, as shown in FIG. 28 to FIG. 29 or FIG. 39 (b) to (c), the auxiliary rack 19 is rotated around the intermediate gear 20 in the arrow direction. It rotates (FIG. 12 (c)) and holds the lower surface 19 e of the auxiliary rack 19 in the holder 1.
7 is parallel to the drive rack 14 while being supported by the support portion 17e. By such an operation, the tray holder 18 rises, the second stopper 18g comes into contact with the lower surface of the tape playing mechanism 1 and stops, and the shaft portion 18c of the tray holder 18 is further lifted by the bearing portion 17a of the holder 17, The tray holder 18 rotates in the direction of the arrow against the force of the tray holder spring 21, and the first stopper 18e of the tray holder 18 is removed from the stopper 17g of the holder 17 and becomes parallel to the tape playing mechanism 1. In this state, as shown in FIG. 30, when the drive rack 14 is further driven to the end in the arrow A direction, the shaft portion 14c advances in the straight portion of the cam groove 17b of the holder 17 in the arrow A direction, and the shaft portion 14c.
The auxiliary rack 19, which is supported by c and the supporting portion 17e of the holder 17 and is in a horizontal state, is driven in the arrow A direction while being meshed with the intermediate gear 20. By driving the auxiliary rack 19 in the direction of arrow A, the intermediate gear 20 and the drive gear 22 rotate,
The tray 23 that meshes with this is driven in the direction of arrow A and is pulled out from the tray holder 18.

The lid raising piece 18h of the tray holder 18
Lifts the lid 27 in the direction of arrow E when the tray holder 18 is raised, the tray 23 projects from the opening 2b of the housing 2, the drive rack 14 pushes the detection switch 29, and the reel motor 6 momentarily drives the drive rack 14. It rotates in the direction of arrow B and stops within the play range of the large friction gear 11 and the small friction gear 12 that do not move the drive rack 14.

Next, when the cassette half 24 on the tray 23 is replaced and the tray 23 is manually pushed in the direction of arrow B or the loading knobs 2a and 4a are operated again, the reel motor 6 is rotated and the tray 23 is removed. Driven in the direction of arrow B and housed inside the housing 2, FIG. 29 to FIG.
The cassette half 24 is mounted on the tape playing mechanism 1 in the opposite manner to the above. Also, the mounting force at this time is the force of the cassette pressing spring 25, and the cassette half 24
Is held by the roller 26 so that the upper surface is not scratched when it is stored in the direction of arrow B.

When the drive rack 14 is further driven in the direction of arrow B from the state of FIG. 28, the lock portion 14b of the drive rack 14 pushes the upper portion of the support portion 17e of the holder 17 as shown in FIG. The shaft portion 14c is driven in the elongated hole 19a of the auxiliary rack 19 in the arrow B direction to push the detection switch 29 'and stop. Therefore, the holder 17
Is a support portion 17d and a holder lock portion 14 of the drive rack 14.
The rotation of the tray holder 18 in the direction of arrow E is blocked by b, the first stopper 18e of the tray holder 18 further presses the stopper 17g of the holder 17 to lock the rotation in the direction of arrow E, and the cassette half 24 receives the force of the cassette pressing spring 25. Then, the roller 26 is mounted on the tape playing mechanism to start playing.

As a means for preventing the tray holder 18 from being opened, the hook 16 is rotated in the direction of arrow D by the cam portion 14b of the drive rack 14 and engages with the convex portion 18a of the tray holder 18 to cause the arrow of the tray holder 18 to move. It is possible to further strengthen the prevention of rotation in the e direction. With the above configuration, the cassette loading device of this embodiment has the following effects.

That is, the drive gear portion 10 is rotated by the operation of the reel motor 6, and the drive rack 14 is moved. When the cassette half 24 is taken out, the holder 17 is rotated from a position close to the tape playing mechanism 1 to a position separated by a movement in one direction within a predetermined range on the starting end side of the drive rack 14, and further the drive rack 14 is unloaded. By moving the tray 23 from the predetermined range to the terminal end side, the tray 23 is moved so as to be pulled out from the tray holder 18 via the interlocking means (19, 20, 22), and the cassette half 24 becomes detachable. On the other hand, the cassette half 24 is mounted by the reel motor 6
And the tray 23 moves into the tray holder 18 via the interlocking means by the movement of the drive rack 14 on the terminal side of the drive rack 14 in the other direction within the predetermined range on the start end side of the drive rack 14 and the holder 17 moves. Is rotated, the holder 17 approaches the tape playing mechanism 1, and the cassette half 24 is mounted on the tape playing mechanism 1 to enable playing.

In this case, since the holder 17 having the tray holder 18 holding the tray 23 mounted thereon can be assembled, the conventional loading board can be omitted, the number of parts is small, the structure is simple, and the assembly is easy. In addition, the size can be reduced and the cost can be reduced. In particular, if the drive rack 14 is provided on the back side of the tape playing mechanism 1, it becomes easy to reduce the thickness.

The tray 23 is attached to the chassis 5 at both the position where the tray 23 approaches the tape playing mechanism 1 and the position where it separates from the tape playing mechanism 1.
Since it can be in a posture parallel to, it can be made thin. Further, during rotation of the holder 17, the auxiliary rack 19 provided on the drive rack 14 and the holder 1
Meshing of gear parts (20, 22) of 7, gear parts (20, 2)
2) and the rack portion 23a of the tray 23 can be engaged with each other so that reliability can be ensured.

At the position where the holder 17 approaches the tape playing mechanism 1 in the rotating direction, the shaft portion 14c of the drive rack 14 is formed in the elongated hole 19a in the direction opposite to the direction in which the holder 17 separates from the tape playing mechanism 1. When you move along,
The holder lock part 14f of the drive rack 14 is locked to the support part 17e of the holder 17 while the meshing state of the auxiliary rack 19 and the gear parts (20, 22) is maintained.
Since the rotation of 7 in the direction of opening from the tape playing mechanism 1 is restricted, the performance of the cassette half 24 can be performed stably.

Further, the cassette half 24 is prevented from being damaged when the cassette half 24 is attached to or detached from the tray holder 18, and the cassette pressing spring 2 is rotated when the holder 17 is rotated so as to approach the tape playing mechanism 1.
5 allows the tape playing mechanism 1 to be stably mounted. Although the reel motor 6 is used as the drive motor, a motor different from the reel motor may be used. The tray holder spring 21 urges the tray holder 18 in a direction in which the tray 23 is moved away from the chassis 5 with respect to the loading / unloading side of the tray 23. However, the tray holder 18 is biased in the opposite direction, and stoppers 18e and 18g are provided correspondingly. Good. Further, the interlocking means is not limited to the configuration of the auxiliary rack and the gear part of the embodiment,
It is also possible to use an arm, a gear train, or the like that interlocks the drive rack 14 and the tray 23.

[0054]

According to the cassette loading device of the first aspect of the present invention, since the convex portion is provided on the mounting surface of the cassette and the concave portion for fitting the convex portion is formed on the tray, the cassette is inserted into the tray with a simple structure. Therefore, there is an effect that the cassette can be surely stored in the tray only by utilizing the outer shape of the cassette, and the cassette can be reliably pulled to the fixed position by the tray.

According to the cassette loading device of the second aspect, in addition to the effect of the first aspect, the convex portions of the cassette are provided on both sides in the thickness direction of the front opening, and the concave portion is formed at the front end in the retracting direction of the tray. Since the magnetic head does not obstruct the opening on the front of the cassette facing the magnetic head, the tray supports both side surfaces in the width direction of the cassette. Since the plate is erected, the tray can be reliably positioned and the wall on the front end side of the tray can be eliminated, so that the cassette can be easily inserted into the tray.

[Brief description of drawings]

FIG. 1 is an external perspective view of a cassette deck equipped with a cassette loading device according to an embodiment of the present invention.

FIG. 2 is an external perspective view of a radio-cassette equipped with the cassette loading device according to the embodiment of the present invention.

FIG. 3 is a rear perspective view of the cassette loading device in this embodiment.

FIG. 4 shows a friction gear, in which (a) is a plan view and (b) is a sectional view.

FIG. 5 is a plan view showing a state in which a large friction gear rotates and a friction spring is urged.

FIG. 6 is a bottom view of a friction gear.

FIG. 7 is a partial cross-sectional plan view of the cassette loading device.

FIG. 8 is a front view of the cassette loading device.

FIG. 9 is a bottom view of the cassette loading device.

FIG. 10 is a view showing a drive rack, (a) is a left side view, (b) is a plan view, and (c) is a rear view.

FIG. 11 shows an auxiliary rack, (a) is a left side view, (b) is a plan view, (c) is a bottom view, (d) is a rear view, and (d) is a cross-sectional view taken along the line AA. Is.

12A and 12B show a relationship between a drive rack and an auxiliary rack. FIG. 12A is a left side view of a first state, FIG. 12B is a left side view of a second state, and FIG. 12C is a third state. FIG.

FIG. 13 is a front view of a holder.

FIG. 14 is a plan view thereof.

FIG. 15 is a left side view of the holder.

FIG. 16 is a rear view of the holder.

FIG. 17 is a right side view of the holder.

FIG. 18 is a bottom view of the holder.

FIG. 19 is a front view of the tray holder.

FIG. 20 is a plan view thereof.

FIG. 21 is a left side view of the tray holder.

FIG. 22 is a right side view of the tray holder.

FIG. 23 is a rear view of the tray holder.

FIG. 24 is a bottom view of the tray holder.

FIG. 25 is a sectional view of the tray holder.

FIG. 26 is a cross-sectional view in which the roller mounting portion of the tray holder is at the cross-sectional position.

FIG. 27 is a left side view showing a closed state of the holder of the cassette loading device.

FIG. 28 is a left side view showing a state in which the holder of the cassette loading device is about to open.

FIG. 29 is a left side view showing the opened state of the holder of the cassette loading device.

FIG. 30 is a left side view showing a state where the tray of the cassette loading device is pushed out.

FIG. 31 is a front view of the tray.

FIG. 32 is a plan view of the tray.

FIG. 33 shows a tray, (a) left side view,
(B) is a right side view, (c) is a sectional view thereof, and (d) is a sectional view with a different sectional position.

FIG. 34 is a bottom view of the tray.

FIG. 35 is a rear view of the tray.

FIG. 36 is a central sectional view.

FIG. 37 is a plan view showing a state where a cassette half is mounted.

FIG. 38 is a sectional view showing the rack portion thereof.

FIG. 39 is a view showing the operations of the holder, the drive rack, and the auxiliary rack. (A) is a left side view of the holder in a closed state in which the holder approaches the tape playing mechanism, and (b) is a left side view of the holder just before opening. FIG. 6C is a left side view of the holder in the opened state.

FIG. 40 is a partial external perspective view of a conventional cassette tape deck.

[Explanation of symbols]

 1 tape playing mechanism 2 cassette deck housing 3 bottom plate 4 radio-cassette housing 5 chassis 6 reel motor as a drive motor 7 capstan motor 8 screw 9 screw 10 intermediate gear 11 large friction gear 12 small friction gear 13 friction gear spring 14 drive rack 14c Shaft part 14f Holder lock part 15 Leaf spring 16 Hook 17 Holder 17e Support part 18 Tray holder 18e 1st stopper 18g 2nd stopper 19 Auxiliary rack 19a which constitutes one of interlocking means 20a It constitutes a gear part. Intermediate gear 21 Tray holder spring 22 Drive gear constituting a gear portion 23 Tray 23a Rack portion 23b Recessed portion 23c Supporting piece 23d Both side plates 24 Cassette half 24a Recessed portion 25 Cassette holding spring 26 Roller 27 Lid 28 Lid Root 29, 29 'detection switch 32 leaf switch 33 switch lever

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shinichi Tanaka 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (2)

[Claims] 1. A tray for mounting a cassette having a convex portion on a mounting surface, the tray having a concave portion for fitting the convex portion, and a cassette loading mechanism having a tray holder for driving the tray in and out. Equipped with a cassette loading device. 2. A convex portion of the cassette is provided on both sides of a front opening in the thickness direction, a tray stands up both side plates for supporting both side faces of the cassette in the width direction, and a concave portion is a bottom portion of the tray. 2. The cassette loading device according to claim 1, further comprising support pieces that are provided at a front end of the tray in the drawing direction and that support front surfaces of both ends in the width direction of the cassette.