JP2001184763A - Tape drive assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a tape drive assembly for a tape recorder, etc., having a spring mechanism which allows the smooth putting in and out of a cassette to and from a cassette holder and can surely hold the cassette half in loading of the cassette. SOLUTION: A cassette holder 4 of the tape drive assembly constituted by making the cassette holder 4 having a cassette cap 6 turnable to a cassette attaching and detaching side and a cassette loading side around a shaft part as a fulcrum with respect to a chassis 1 is provided with a first leaf spring 25 for pop-up of the cassette cap and a second spring 26 which exists in a position contactless with a cassette half in loading and unloading of the cassette and retains the cassette half in loading of the cassette.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable and small tape drive such as a tape recorder, and more particularly to a cassette holding mechanism for a cassette holder having a cassette lid with respect to a chassis on a main body.

[0002]

2. Description of the Related Art Conventionally, in a tape recorder of this type, a spindle mechanism between a main body side chassis and a cassette holder is formed by zinc die-casting the cassette holder with respect to the chassis as a protective measure for strength when the tape recorder falls. It is firmly configured by using a steel holder guide.

[0003] That is, as shown in FIG. 8, one of the pair of left and right holder guides 2, which is screwed to the chassis 1 side, is fixed to the chassis 1 by swaging. (Or screw fixing), and the other holder guide 3 is screw-fixed on the chassis 1. The holder guides 2 and 3 are provided with shaft portions 2a and 3a on which the cassette holder 4 is rotatably supported. A support portion 5 extending integrally from these left and right sides of the holder body 4a of the cassette holder 4 to the shaft portions 2a, 3a,
The cassette holder 4 is rotatable between a cassette attaching / detaching position and a cassette loading position through the shaft holes 5a, 5a formed in the cassette holder 5.

On the upper surface of both sides of the cassette holder 4, as shown in FIG. 9, a closed cassette lid 6 is provided.
(See FIG. 10). A spring comprising a hop-up leaf spring 7 for releasing the hopper in a hop-up manner, and a cassette half-pressing leaf spring 8 for holding the cassette half integrally with the hop-up leaf spring 7 when the cassette is loaded. A mechanism is provided.

FIGS. 9 and 1 show details of this conventional spring mechanism.
In the case of 0, the hop-up leaf spring 7 has a mounting portion 9 at the base end thereof caulked and fixed to the cassette holder 4 by a shaft 10. The leaf spring 8 for holding the cassette half is
The hop-up leaf spring 7 is continuously provided on the distal end side and punched out. Therefore, the distal end of the cassette half pressing leaf spring 8 is formed at a position close to the mounting portion 9. A hop-up leaf spring 7 and a cassette half-press leaf spring 8
Faces an opening 4b formed in the cassette holder 4.

Incidentally, since it is not directly related to the present invention, a brief description will be given below. Referring to FIG. 12 are provided. Further, capstans 13, 13 are respectively erected from the chassis 1 so as to face the two pinch rollers 12, 12. Further, hub drive shafts 14, 14 of a cassette (not shown) are erected on the chassis 1.

The chassis 1 is supported by a main body case 15 in which a tape drive (not shown) is built. The body case 15 is provided with a lock arm 16.
A lock lever 17 formed on the cassette lid 6 is engaged with the lock arm 16 to keep the cassette lid 6 locked in a closed state. When the lock release knob 18 is slid, the closed state of the cassette lid 6 is released and the cassette lid 6 is opened. Further, reference numerals 19a19b indicate the cassette lid 6
Is a link lever that maintains the open state.

[0008]

However, the spring mechanism of the conventional tape recorder constructed as described above has the following problems.
As shown in FIG. 10, the cassette half-pressing leaf spring 8 projects from the hop-up leaf spring 7 toward the cassette insertion side through the opening 4 b of the cassette holder 4, so that the cassette half-pressing is performed when the cassette is inserted into the cassette holder 4. Of the cassette half in the cassette holder 4 cannot be smoothly inserted, or the cassette half is damaged by the strong contact with the cassette half holding leaf spring 8 when attaching or detaching the cassette. there were.

In the conventional spring mechanism, the base of the cassette half-pressing leaf spring 8 is connected to the hop-up leaf spring 7.
The leaf spring 8 is attached to the mounting portion 9
When the cassette is closed and the cassette lid 6 is closed, the hop-up leaf spring 7 is elastically applied to the cassette lid 6 in the opening direction, as shown in FIG. Then, the cassette half holding leaf spring 8 retreats toward the cassette lid 6, so that the pressing force of the cassette half becomes insufficient when the cassette is loaded. In such a case, it has conventionally been necessary to add a spring part for holding the cassette half.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has a spring mechanism that can smoothly insert and remove a cassette from and into a cassette holder and that can securely hold a cassette half when a cassette is loaded. An object of the present invention is to obtain a tape driving device such as a tape recorder.

[0011]

In order to achieve the above-mentioned object, a tape drive according to the present invention comprises a cassette holder having a cassette lid with respect to a main body side chassis, and a cassette loading / unloading side and a cassette loading side with a spindle as a fulcrum. In the tape drive device which is rotatable to the side, the first leaf spring for hopping up the cassette lid and the first leaf spring are integrally formed on the cassette holder, and the cassette half is not in contact with the cassette half when the cassette is attached or detached. And a second leaf spring for holding the cassette half when the cassette is loaded.

[0012]

In the tape drive device according to the present invention, the second leaf spring for holding the cassette half is retracted from the cassette holder when the cassette is attached to or detached from the cassette holder. Can be smoothly attached and detached without contacting the leaf spring. Also,
In the loaded state of the cassette in the closed state of the cassette lid, the first leaf spring for hop-up deforms the cassette lid so that the cassette lid is elastically provided in the opening direction, and accordingly, the second leaf spring deforms together with the first leaf spring. The cassette half can be reliably held down by the leaf spring.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a tape driving device according to an embodiment of the present invention.

FIG. 1 is an exploded perspective view of a main part of the tape recorder according to the present embodiment, and FIGS. 2 and 3 are sectional views of an assembled state of a spindle mechanism of a cassette holder.

1 to 3, a first holder guide 2 made of, for example, zinc die-cast is formed on one side (left side in FIG. 1) of the chassis 1 by a rigid molded body.
0 is fixed by caulking, and a shaft portion 21 protrudes inside the first holder guide 20.

The other side (FIG. 1)
A support plate 22 bent from the chassis 1 is provided upright on the right side of the support plate 1, and a shaft portion 23 formed by burring is protruded from the outside of the support plate 22.

The procedure for assembling the first holder guide 20 thus constructed and the support portions 5, 5 provided on the cassette holder 4 on the support plate 22 is performed as follows. That is, the bearings 5, 5 insert and support the shaft holes 5a, 5a into the shaft 21 of the first holder guide 20 and the shaft 23 of the support plate 22, respectively, from one side. In the temporary fixing support state of 5, 5, the zinc die-cast second holder guide 24 made of a rigid molded body is engaged from above so as to sandwich the support portion between the support plate 22 and the support portion 5. The second holder guide 24 has a stopper function for preventing the support plate 22 and the support portion 5 from coming off, so that the first holder guide 20 and the support portion 5 can be simultaneously prevented from coming off. From this state, the second holder guide 24 is fixed to the chassis 1 with the screws 24a, whereby the attachment of the cassette holder 4 is completed.

On the other hand, on the upper surfaces on both sides of the cassette holder 4, a first leaf spring 25 for hopping up the cassette lid and a second leaf spring 26 for holding the cassette formed integrally with the first leaf spring 25 are provided. Are provided respectively.

The spring mechanism will be described with reference to FIGS. 4 and 5. The first leaf spring 25 is positioned at the base end 25 of the leaf spring 25 so as to face the opening 27 opened to the cassette holder 4.
a is fixed to the cassette holder 4 by caulking the shaft 28. Further, the above-mentioned second leaf spring 26 is integrally formed in parallel with the first leaf spring 25. Here, the first leaf spring 25 is slightly inclined and deformed to the cassette lid 6 side,
The second leaf spring 26 is inclined and deformed to the opposite side to the first leaf spring 25, but the tip of the second leaf spring 26 is projected toward the chassis 1 through the opening 27 of the cassette holder 4. Not.

The spring mechanism constructed as described above operates as follows. That is, when the cassette is attached to and detached from the cassette holder 4, the cassette comes into contact with the second leaf spring 26 because the second leaf spring 26 for holding down the cassette half is retracted from the opening 27 of the cassette holder 4. This allows smooth attachment and detachment without the need.

In the cassette loaded state with the cassette lid 6 closed, the first leaf spring 2 for hop-up is used.
5 deforms the cassette lid 6 toward the cassette so that the cassette lid 6 is elastically provided in the opening direction (hop-up direction).
The operation of securely pressing the cassette half C can be performed by the second leaf spring 26 deforming as shown in FIG.

When the cassette lid 6 is opened from the cassette loaded state to the cassette detached state, the first leaf spring 2
Due to the spring repulsion force of 5, the cassette lid 6 hops up in the opening direction.

In FIG. 1, reference numerals 29, 29 denote a pair of cassette half guide posts provided on the chassis 1 near the capstans 13, 13 for positioning the cassette when the cassette is loaded. The cassette half guide posts 29, 29 are integrally formed by drawing from the chassis 1 as shown in FIG. As a result, the number of parts can be reduced as compared with the conventional method in which the guide post 23 is outsert molded or the guide post shaft is caulked and fixed, and the caulking cost is reduced, and the guide post is greatly reduced. There is an advantage that strength can be improved.

As described above, in the tape recorder according to the present invention, in the spindle mechanism of the cassette holder 4, one support 5 of the cassette holder 4 is provided by the first holder guide 20 fixed to the chassis 1. The other support part 5 of the cassette holder 4 is supported on a burring-processed shaft part 23 of a support plate 22 bent and raised from the chassis 1 and temporarily fixed to the other support part 5 and the support plate 22. Then, the second holder guide 24 is assembled from above, and the second holder guide 24 is fixed to the chassis 1 with screws. The workability of assembling the spindle mechanism of the holder can be greatly improved.

In the pressing spring mechanism of the cassette half, the second leaf spring 26 is retracted out of the cassette holder 4 when the cassette is attached or detached, so that the cassette comes into contact with the second leaf spring 26. When the cassette is loaded, the second leaf spring 26 is spring-deformed to the cassette side by the spring deformation force of the first leaf spring 25, so that the cassette half can be reliably pressed.

The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention.

For example, in the present embodiment, the holder guide 20,
Although the description has been given of the case where 24 is made from zinc die cast, other members may be used as long as they are formed from a rigid molded body.

[0028]

As described above, the tape driving device according to the present invention comprises the first leaf spring for hopping up the cassette lid in the cassette holder, and the first leaf spring integrated with the first leaf spring. Is provided at the non-contact position, and the second leaf spring for pressing the cassette half when the cassette is loaded is provided, so that the cassette can be smoothly inserted into and removed from the cassette holder when the cassette is attached and detached.
There is an effect that the cassette half can be reliably held down when the cassette is loaded.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of a tape recorder in the present embodiment.

FIG. 2 is a partial cross-sectional view of the spindle portion of the cassette holder in a temporarily fixed state.

FIG. 3 is a partial cross-sectional view of a support shaft of a cassette holder in a supported state.

FIG. 4 is a perspective view of a spring mechanism.

FIG. 5 is a sectional view of a cassette lid hop-up state.

FIG. 6 is a cross-sectional view of a cassette lid closed state.

FIG. 7 is a sectional view of the cassette half guide post.

FIG. 8 is an exploded perspective view of a main part of a conventional tape recorder.

FIG. 9 is a perspective view of a conventional spring mechanism.

FIG. 10 is a cross-sectional view of a conventional tape recorder with a cassette lid opened.

FIG. 11 is a cross-sectional view of a conventional tape recorder with a cassette lid closed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Chassis, 4 ... Cassette holder, 4a ... Holder main body, 5 ... Bearing part, 5a ... Shaft hole, 6 ... Cassette lid, 11
... Reproduction head, 12 ... Pinch roller, 13 ... Capstan, 14 ... Reel drive shaft, 20 ... First holder guide, 21 ... Shaft, 22 ... Support plate, 23 ... Shaft, 24 ... Second holder guide , 25: first leaf spring, 25a: base end, 26: second leaf spring, 27: opening, 29: cassette half guide post, C: cassette half

Claims (1)

[Claims] 1. A tape drive device in which a cassette holder having a cassette lid with respect to a main body side chassis is rotatable between a cassette attaching / detaching side and a cassette loading side with a support shaft as a fulcrum. A first leaf spring for up and a second leaf spring which is formed integrally with the first leaf spring, is in a non-contact position with the cassette half when the cassette is attached / detached, and presses the cassette half when the cassette is loaded. A tape drive characterized by the above-mentioned.