JPS62293552A - Cassette loading device - Google Patents

Abstract

PURPOSE:To prevent shaping of a front cover due to the rubbing of the front cover and a member by driving a cover opening/closing member and the front cover on the same line while the front cover is engaged with an engaging part of the cover opening/closing member. CONSTITUTION:When a cassette holder 3 is drawn once horizontally and descended vertically in the direction of arrow (a), a pin 17 provided to a side of a support plate 2 at the descending is pressed into contact with the lower end of the opening/closing member 30 to push up relatively the member 30 from downward direction. Thus, the member 30 is turned around a fulcrum 31 in the direction of arrow (g) to open the front cover 8 of the tape cassette 50. In such a case, since the axial line of the fulcrum 31 of the member 30 and that of the fulcrum 9 of the front cover 8 are made coincident, they are driven in the same axial line. Thus, the member 30 and the front cover 8 are driven with the same turning locus so as to prevent the rubbing between an engagement part 32 of the member 30 and the ridge 10a of the throughhole 10 of the front cover 8.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a cassette mounting device that is most suitable for use in a recording/reproducing device such as a cassette video tape recorder, and in particular, The present invention relates to a cassette loading device using a tape cassette having a front lid that is rotated around the cassette to open and close, and configured to move the tape cassette from a cassette insertion position to a cassette first loading position by means of a cassette holder.

[Summary of the invention]

The present invention uses a tape cassette having a front cover that is rotated around a support shaft to open and close, and a cassette mounting device configured to move the tape cassette from a cassette insertion position to a cassette mounting position using a cassette holder. , the front lid is opened and closed by rotating the lid opening and closing member in the same axis as the front lid, with the front lid of the tape cassette being engaged with the engaging portion of the lid opening and closing member provided on the cassette holder. With this structure, it is possible to prevent the front lid from being scratched due to rubbing between the engaging portion of the lid opening/closing member and the front lid when the front lid is opened and closed.

[Conventional technology]

Conventionally, as this type of cassette mounting device, there is a device as described in, for example, Japanese Utility Model Application No. 173884/1984 filed by the present applicant.

The device has a cassette holder 61 into which a tape cassette 60 is inserted, as shown in FIG. 5, and this cassette holder 61 is supported by a pair of left and right support plates 62. A front 164 is attached to the tape cassette 60 to protect a magnetic chip 163 that is hung along its front opening, and the front M64 is centered on a pair of support shafts 65 in the direction of arrows c and d. It is designed to be opened and closed by rotating in the direction.

The pair of support plates 62 have three inverted guide grooves 6.
6 are formed respectively, and by guiding three guide rollers 67 provided on both sides of the cassette/nod holder 61 with these guide grooves 66, the cassette holder 61 is moved along an inverted movement trajectory. , is configured to reciprocate in the directions of arrows a and b between the cassette insertion position and the cassette mounting position.

A connecting plate 68 that hangs over the top of a pair of support plates 62
A lid opening/closing member 70 for opening and closing the front lid 64 of the tape cassette 60 is attached via a fulcrum shaft 71 so as to be rotatable in one direction in the direction of the arrow. This lid opening/closing member 70 has a substantially U-shape, and an engaging portion 72 that engages with the lower end portion 64a of the front M64 of the tape cassette 60 is provided at the lower portion thereof.

Cassette holder 61 of the device configured as above
When the tape cassette 60 is inserted into the tape cassette 60, a lock release protrusion (not shown) provided on the bottom plate of the cassette holder 61 is inserted into an insertion groove (not shown) provided at the bottom of the tape cassette 60. Insert the tape cassette 6
0 before f[64 is unlocked.

Next, the cassette holder 61 is guided by the guide #66 of the pair of support plates 62, and is once pulled in horizontally from the cassette insertion position, and then moved forward in the direction of arrow a to be vertically lowered to the cassette installation position. and tape cassette 6
0 to the cassette mounting position. When the cassette holder 61 is vertically lowered, the engaging portion 72 of the lid opening/closing member 70 engages the lower end 64 of the front M64 of the tape cassette 60.
When the cassette holder 61 is further vertically lowered in this state, the front M64 is rotated in the direction of arrow C and the lid is opened. When opening the lid, the lid opening/closing member 70
The upper surface 72a of the engaging portion 72 is the lower end 64a of the front 164.
By being pressed by, the lid opening/closing member 70 is rotated in the direction of the arrow.

Accordingly, the lower end 64a of the front lid 64 slides against the upper surface 72a of the engaging portion 72 of the lid opening/closing member 70, and the front M64 is rotated in the direction of arrow C to open the lid. be done.

[Problem that the invention seeks to solve]

However, according to the conventional device described above, the front 1i64 of the tape cassette 60 is rotated in the directions of arrows c and d about the support shaft 65, and the lid opening/closing member 70 is rotated in the directions of the arrows 7! Therefore, they are configured to be rotated in different directions, and therefore, both are rotated drawing different rotation trajectories.

As a result, the front lid 640-lower end 64a and the lid opening/closing member 70
The upper surface 72a of the engaging portion 72 rubs against each other, and the front lid 64 and the lid opening/closing member 70, which are molded from synthetic resin, are scraped against each other and synthetic resin shavings are generated. The generated shavings easily adhere to the magnetic tape 63 of the tape cassette 60, and this adhesion causes recording and reproduction defects.

Also, as the degree of opening of the front M64 increases, the front lid 6
4, the lower end 64a of the lid opening/closing member 70 is largely shaved off.
The engagement portion 72 of the front M64 and the lower end 64.2 of the front M64 were not sufficiently engaged, making it impossible to open the front I64.

Further, due to the different rotation loci of the lid opening/closing member 70 and the front lid 64, considerable force is applied to the front M64 when opening the front lid 64, causing deformation, cracking, etc. of the front lid 64.

Therefore, the present invention prevents the lid opening/closing member and the front lid from rubbing against each other when the front lid of the tape cassette is opened and closed by the lid opening/closing member attached to the cassette holder.

[Means for solving problems]

The present invention uses a tape cassette having a front cover that is rotated around a support shaft to open and close, and a cassette mounting device configured to move the tape cassette from a cassette insertion position to a cassette mounting position using a cassette holder. The cassette holder is provided with a lid opening/closing member that rotates around a fulcrum shaft, and the lid opening/closing member is provided with an engaging portion that engages with the front lid of the tape cassette, and the engaging portion is provided with the front lid of the tape cassette. When the lid is engaged, the axis of the fulcrum shaft is aligned with the axis of the support shaft of the front lid, and the lid opening/closing member is rotated on the same axis as the front lid to close the front lid. It is configured to open and close.

[For production]

According to the present invention, when the front lid is engaged with the engaging portion of the lid opening/closing member, the axis of the fulcrum shaft of the lid opening/closing member and the axis of the supporting shaft of the front lid are aligned, and the lid opening/closing member and the front lid are aligned. are rotated on the same axis to open and close the front cover.

Therefore, since the lid opening/closing member and the front lid are rotated with the same rotation locus, the engagement part of the lid opening/closing member and the front lid are prevented from rubbing against each other due to different rotation trajectories of the two. be done.

〔Example〕

An embodiment in which the present invention is applied to a cassette loading device for a cassette type video tape recorder will be described below with reference to the drawings.

As shown in FIG. 1, the cassette holder 3 into which the tape cassette 50 is inserted is supported by a pair of left and right support plates 2. As shown in FIG. In this cassette holder 3, three guide rollers 5 provided on both sides of the cassette holder 3 are guided by three inverted guide grooves 4 provided in a pair of support plates 2, so that the cassette can be The cassette is configured to be reciprocated in the directions of arrows a and b along an inverted movement trajectory between a cassette insertion position where the inserted cassette is inserted and a cassette installation position where the inserted cassette is installed in the recording/playback position. ing.

Tape cassette 5 inserted into the above-mentioned cassette holder 3
A front cover 8 (made of synthetic resin) is attached to the 0 for protecting the magnetic tape 7 that is hung along the front opening 6 of the 0. The front M8 is opened and closed by being rotated in the directions of arrows c and d about a pair of left and right support shafts 9. Front M8
A through hole 10 is provided on the front surface of the tape cassette 50, into which a lock portion 2I of the front lid lock member 20 disposed inside the tape cassette 50 is inserted.

At the front side of the tape cassette 50, there is a tape cassette 1-
A front lid locking member 20 is disposed for locking the front MS in the closed position when the 50 is not in use. The front lid locking member 20 is attached to a locking member mounting wall (not shown) of the tape cassette 50 via a pair of left and right fulcrum pins 22, as indicated by the arrow e.
It is mounted so as to be rotatable in the direction f, and is biased to rotate in the direction of arrow e by a spring (not shown).

A locking portion 21 is provided protruding approximately in the middle of the front lid opening and hook member 20, and this locking portion 21 is connected to the through hole 1 of the front lid 8.
0, the front lid 8 is locked.

A lid opening/closing member (made of synthetic resin) 30 is attached to the side of the cassette holder 3 via a fulcrum shaft 31 so as to be rotatable in the directions of arrows g and h. A hook-shaped engaging portion 32 that engages with the through hole 10 of the front lid 8 of the tape cassette 50 is provided on the front side of the lid opening/closing member 30 . As shown in FIG. 2, when the engaging portion 32 is engaged with the through hole 10 of the front lid 8, the axis P of the fulcrum shaft 31 of the lid opening/closing member 30 is aligned with the fulcrum shaft 9 of the front lid 8. It is configured to be flush with the axis P. As shown in FIG. 1, a spring locking hole 33 is provided at the rear of the lid opening/closing member 30.
The lid opening/closing member 30 is biased to rotate in the direction of the arrow by a spring 14 attached between the spring locking pin 11 provided on the side of the case/7 case holder 3. The downward rotation of the lid opening/closing member 30 is regulated by a regulating pin 15 installed horizontally on the side of the cassette holder 3. pin 1
7 allows rotation in the directions of arrows g and h.

Next, the operation of the embodiment configured as above will be explained.

As shown in FIG. 1, the tape cassette 50 is inserted into the cassette holder 3 in the direction of the arrow m, and the front lower end of the tape cassette 50 is attached to the positioning part 18 provided on the front edge of the bottom plate 3a of the cassette holder 3. As shown in FIGS. 2 and 3, the engaging portion 32 of the lid opening/closing member 30 is relatively inserted into the through hole 10 of the front lid 8 of the tape cassette 50 and engaged with the front M8. Ru.

Along with this, the engaging portion 32 of the lid opening/closing member 30 pushes the locking portion 21 of the front lid locking member 20, and the front lid locking member 2
0 in the direction of arrow r as shown in FIG.
The locking portion 21 of the front lid locking member 20 is rotated around the
is removed from the through hole 10 of the front M8 to unlock the front M8.

At this time, as shown in Fig. 3, the support shaft 9 of the front M8
The axis P between the fulcrum shaft 31 of the lid opening/closing member 30 is lost once.

Next, after the cassette holder 3 is pulled in horizontally,
When vertically lowered in the direction of arrow a in FIG.
As shown in FIG. 4, the lid opening/closing member 30 comes into contact with the lower end of the lid opening/closing member 30, and the lid opening/closing member 30 is pushed up relatively from below. As a result, the lid opening/closing member 30 is rotated about the fulcrum shaft 31 in the direction of arrow g in FIG.
is opened. When opening the lid, the axes of the fulcrum shaft 31 of the lid opening/closing member 30 and the supporting shaft 9 of the front M8 are aligned, so the lid opening/closing member 30 and the front lid 8 are rotated on the same axis. Ru. Therefore, since the lid opening/closing member 30 and the front lid 8 are rotated drawing the same rotation locus, the engaging portion 32 of the lid opening/closing member 30 is generated when both are rotated drawing different trajectories. There is no rubbing between the front M8 and the edge 10a of the through hole 10.

The tape cassette 50 whose lid has been opened in this manner is moved forward by the cassette holder 3 and mounted at the cassette mounting position. When the tape cassette 50 is installed at the cassette loading position, the magnetic tape 7 is pulled out from the front of the tape cassette 50, the tape is loaded, and desired recording and reproduction are performed.

Next, after desired recording and reproduction, when the mode is switched to the eject mode, unloading is performed and the cassette holder 3 is moved back in the direction of the arrow in FIG. As the cassette holder 3 moves back, the pin 17 of the support plate 2
0, the lid opening/closing member 30 is moved back in the direction of the arrow in FIGS. 1 and 4 by the spring 14, and the front lid 8 of the tape cassette 50 is closed. . When closing the lid, the lid opening/closing member 3
0 and the front cover 8 are rotated on the same axis, so the front cover 8
When closing the lid, the engaging portion 32 of the lid opening/closing member 30 and the front M8
There will be no rubbing between the edges 10a of the through holes 10. Then, the tape cassette 50 is inserted into the first tape cassette from the cassette holder 3 which has been moved back to the cassette insertion position shown in FIG.
When pulled out in the direction of arrow n in the figure, the engaging portion 32 of the lid opening/closing member 30 is disengaged from the through hole 10 of the front M8 of the tape cassette 50, and accordingly, the front lid is locked by a spring'' (not shown). The member 20 is rotated in the direction of arrow e in Fig. 3, and its lock portion 21 is inserted into the through hole 10 of the front M8.Thereby, the front M8 is locked in the closed position.

According to the embodiment described above, when the front M8 of the tape cassette 50 is opened and closed, the engaging portion 32 of the lid opening/closing member 30 and the edge 10a of the through hole 10 of the front lid 8 that is engaged with the engaging portion 32.
Since no rubbing occurs between the front M8 and the lid opening/closing member 30, which are molded from synthetic resin, it is possible to prevent the front M8 and the lid opening/closing member 30, which are molded from synthetic resin, from being scraped against each other and generating synthetic resin shavings. Therefore, recording and reproduction defects caused by adhesion of the shavings to the magnetic tape 7 are prevented, and also defects in the through-hole 10 and the cover opening/closing member 30 caused by scraping the edge 10a of the through-hole 10 of the front M8 are prevented. It is possible to prevent the front M8 from being unable to open due to poor engagement with the engaging portion 32.

Further, according to the embodiment described above, the front M8 of the tape cassette 50 is unlocked and opened and closed by one lid opening/closing member 30. Therefore, compared to the conventional device in which unlocking the front M8 and opening/closing the front M8 are performed using separate members, the number of parts can be reduced. By inserting the front M8 into the through hole IO of the front cover 8 of the tape cassette 50 to unlock the front M8, the lock release protrusion insertion groove at the lower part of the tape cassette 50 that was conventionally required is no longer necessary. The degree of freedom in setting the traveling path of the magnetic tape 7 within the tape cassette 50, which was restricted due to the presence of the insertion groove, is increased, and the tape cassette 50 can be made thinner and more compact.

Furthermore, the conventional tape cassette 50 is configured to lock the front lid 8 by engaging the opening 21 of the front lid locking member 20 with a recess formed on the rear surface of the front lid 8. However, since the front lid 8 is relatively thin, the recess cannot be sufficiently deep, and therefore the locking portion 21 of the front lid locking member 20 and the recess of the front lid 8 are easily disengaged. , the front M8 was often opened unexpectedly and the magnetic tape 7 was damaged. However, according to the embodiment described above, the lock portion 21 of the front lid locking member 20 is configured to engage with the through hole 10 of the front lid 8 of the tape cassette 50 to lock the front M8. Sufficient engagement force is obtained between the lock portion 21 and the through hole 10, and the front cover 8 can be prevented from being opened unexpectedly.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments (and various effective changes can be made based on the technical idea of the present invention).

Further, the present invention is not limited to a cassette loading device for a cassette type video tape recorder, but can be applied to various cassette loading devices for various other cassette type recording and reproducing devices, information processing devices, and the like.

〔Effect of the invention〕

According to the present invention, the lid opening/closing member and the front lid are rotated on the same axis while the front lid is engaged with the engaging portion of the lid opening/closing member. It is rotated drawing the same rotation locus. Therefore, when opening and closing the front cover, it is possible to prevent the engagement part of the cover opening/closing member and the front cover from rubbing against each other, which is caused by the different rotation trajectories of the cover opening/closing member and the front cover. Scraping is prevented. By preventing the front cover from being scraped, it is possible to reliably prevent recording/reproduction defects caused by the scraping adhering to the magnetic tape.

In addition, it is possible to prevent the front lid from being scraped by the engaging portion of the lid opening/closing member, causing poor engagement between the engaging portion of the lid opening/closing member and the front lid, and causing the front lid to open incorrectly. can.

Furthermore, since the lid opening/closing member and the front lid are rotated along the same rotation locus to open and close the front lid, no force is applied to the front lid when opening/closing the front lid, thereby preventing deformation of the front lid. Cracking etc. can be effectively prevented.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention.
The figure is a side view showing the cassette loading device and the tape cassette, Figure 2 is a partially enlarged plan view of the main parts, Figure 3 is a diagram showing the state in which the lid opening/closing member and the front lid are engaged, and Figure 4 is FIG. 5 is a diagram showing the opening operation of the front lid, and FIG. 5 is a diagram showing an example of the cassette loading device in the prior application. In addition, in the symbols used in the drawings, 3--・------m---Cassette holder 8--
−・−・−・−Front cover 9−−−−−−−−−−−−−−− Support shaft 30−・−
-------1----- Lid opening/closing member 31...
−−−−−−−−−−−−−−−−1 fulcrum shaft 32−−−−−−−−
---...-Engaging portion 50-------m---Tape cassette.

Claims (1)

[Scope of Claims] A cassette that uses a tape cassette having a front lid that is rotated around a support shaft to open and close, and that is configured to move the tape cassette forward from a cassette insertion position to a cassette mounting position using a cassette holder. In the mounting device, the cassette holder is provided with a lid opening/closing member that rotates around a fulcrum shaft, the lid opening/closing member is provided with an engaging portion that engages with the front lid of the tape cassette, and the engaging portion is provided with an engaging portion that engages with the front lid of the tape cassette. When the front lid is engaged, the axis of the fulcrum shaft is configured to coincide with the axis of the support shaft of the front lid, and the lid opening/closing member is rotated on the same axis as the front lid, and the front lid is rotated on the same axis as the front lid. A cassette loading device characterized in that the lid is configured to open and close.