JPH02146161A - Cassette adapter - Google Patents

Abstract

PURPOSE:To facilitate the winding work of a magnetic tape by constituting a reel lock mechanism in such a way that supply and take-up reels are locked at the closing time of an upper half and the lock state is released at the opening time. CONSTITUTION:As to reel lock mechanism 24, when the upper half 22 is closed, a spring 88 is displaced by a lock releasing piece 80, and a release lever 87 is retreated from the other end side of a lock lever 82, and then the lock lever 82 is displaced in the direction of A by a spring 84 to allow a lock claw 81 to engage with its engaging part on a lower flange, so as to lock up the supply and take-up reels. On the other hand, when the upper half 22 is opened, and the lock releasing piece 80 is retreated from a pressing part 88a of the spring 88, the release lever 87 is displaced by the spring 88 in the direction of B, while the lock lever 82 is displaced against elastic force of the spring 84, so that the lock state of each reel by the lock claw 81 is released.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a cassette to which an independent tape reel (supply reel) wound with magnetic tape, which is a recording medium for a VTR (video tape recorder), etc., is attached and detached. Regarding the adapter.

(Prior Art) Generally, magnetic tape, which is the recording medium of a VTR, is wound between a pair of tape reels (a supply reel and a take-up reel) and stored in a tape cassette. VT while stored in the tape cassette
By configuring the magnetic tape so that it can be attached to the magnetic tape, protection and handling of the magnetic tape are facilitated.

However, when storing tape cassettes that are commonly used for consumer use, a large storage space is required and it is difficult to carry them.

Therefore, conventionally, an independent supply reel wrapped with magnetic tape is detachably attached to the tape cassette body (cassette adapter), and a predetermined tape reel is attached to the tape cassette body as needed. It has been proposed to have the following configuration to significantly reduce the storage space and to further facilitate handling.

As shown in FIG. 22, such a tape cassette includes a supply reel 1 wound with a magnetic tape T, and a front M7.
The tape cassette is always closed and has the same external shape as a normal tape cassette, and is composed of a cassette adapter 3 that stores a take-up reel 2, and the supply reel 1 is stored in a reel case 4. In this state, the cassette adapter 3 is attached to the tape reel attachment section 3a through an opening formed on the lower surface (the upper surface in the figure).

In such a tape cassette, after the supply reel 1 is attached to the cassette adapter 3, the supply reel 1 is opened while the front cover 7 is held in an open state with fingers or the like.
The end of the magnetic tape T wound on the cassette adapter 3 is pulled out through the slit 5 for forming a tape path formed on the bottom surface of the cassette adapter 3, the tape guide 6, and the slit 9 formed on the flange 8 of the take-up reel 2. Lever take-up reel 2
The locking pin 11 roughly attached to the end of the magnetic tape T is engaged with the engagement hole 12 of the take-up reel 2 to create a predetermined tape path similar to a normal tape cassette. It is supposed to form.

Further, the bottom surface (top surface in the figure) of the reel case 4 becomes the bottom surface of the cassette adapter 3 and the road surface when the reel case 4 is attached to the cassette adapter 3 and locked with the locking member 13. It forms part of the external shape of the tape cassette, allowing it to be used in the same way as a regular tape cassette.

Incidentally, such a cassette adapter is manufactured by Japanese Patent Application Laid-open No. 62-18
This is explained in detail in JP-A No. 4677 and the like.

(Problem to be Solved by the Invention) In the conventional cassette adapter 3 as described above, in order to form a predetermined tape path, the magnetic tape T is held while the front cover 7 is held in an open state with fingers or the like. It can be passed through the thin slit 5 formed on the bottom of the cassette adapter 3 or the tape guide 6, or the locking pin 11, which is attached to the end of the magnetic tape T and is numbered, can be inserted into the engagement hole 12 of the winding reel 2.
It was very troublesome to form a predetermined tape path.

Further, a slit 5 on the take-up side formed in the cassette adapter 3 and a slit 9 formed in the take-up reel 2
If the magnetic tape T is not aligned with the reel hub 101 of the winding reel 2. : i <, and from this point of view as well, the work of winding the magnetic tape T was extremely troublesome.

In addition, the height position of the tape reel in the tape cassette within the film is an extremely important factor for obtaining stable tape running of the magnetic tape T in the VTR, but in the conventional tape cassette as described above, There is a fear that the height position of the supply reel 1 within the cassette adapter 3 may vary due to variations in processing precision of the reel case 4 or the mounting portion 3a of the cassette adapter 3.

If the bottom of the reel case 4 fluctuates so much that it protrudes beyond the bottom of the cassette adapter 3, not only will stable tape running within the VTR become impossible to obtain, but also the cassette adapter 3 will not be able to run stably within the VTR. There is a risk that the VTR insertion slot or the protruding portion of the reel case 4 may be damaged when the VTR is installed.

Further, the reel case 4 is configured to be locked with a locking member 13 after being attached to the cassette adapter 3, but the opening of the attachment portion 3a is connected to the cassette adapter 3.
Since the reel case 4 is formed on the bottom surface of the reel case 4, there is a risk that the reel case 4 may be inadvertently detached from the mounting portion 3a during use.

By the way, general tape cassettes are equipped with a reel lock mechanism that locks the rotation of the supply reel and take-up reel, and when the magnetic tape housed in the tape cassette loosens, the magnetic tape connects with the loading member in the VTR. This is done to prevent damage to the magnetic tape by preventing careless contact with the tape.

However, in the above-described cassette adapter 3, in order to guide the magnetic tape T pulled out from the supply reel 1 to the take-up reel 2 and form a predetermined tape path, the take-up reel 2 is moved by hand or the like. A slit 5 formed in the cassette adapter 3 by rotation and the take-up reel 2
It is necessary to match the slit 9 formed in the

For this reason, if the rotation of the take-up reel 2 is locked by providing a reel lock mechanism as described above, it becomes impossible to match the slits 5.9, and the magnetic tape T is not inserted into the cassette adapter 3. It becomes virtually impossible to guide the winding material through the slit 5 of the winding reel 2 to the slit 9 of the take-up reel 2.

Therefore, the conventional cassette adapter 3 as described above cannot be provided with such a reel locking mechanism.

(Means for Solving the Problems) The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a novel cassette adapter that can solve the drawbacks of the above-mentioned conventional cassette adapters.

In order to achieve this object, the present invention consists of an upper half and a lower half connected by a hinge so as to be openable and closable, and a supply reel wound with magnetic tape opens the upper half and the lower half. The cassette adapter is a cassette adapter that can be attached and detached in a closed state, and has a take-up reel stored in advance, and is rotatably attached to the upper half, so that when the upper half and lower half are closed, the front of the cassette adapter When the front cover is opened and the upper and lower halves are opened, the front cover faces the outside.
a tape guide mechanism that forms a predetermined tape path within the cassette adapter by guiding the magnetic tape pulled out from the attached supply reel to the take-up reel through the front surface of the cassette adapter; and locks the rotation of the attached supply reel and take-up reel when the upper half and the lower half are opened, and releases this locked state when the upper half and the lower half are opened. The present invention provides a cassette adapter which is equipped with a reel lock m structure.

(Embodiment) Hereinafter, a preferred embodiment of the cassette adapter according to the present invention will be described in detail with reference to FIGS. 1 to 21.

As shown in FIG. 1, the cassette adapter 20 according to the present embodiment is roughly composed of an upper half 22 and a lower half 23, each of which has a rear raR connected by a hinge 21. 23 as shown in FIGS. 2 and 3, the tape cassette has the same external shape and dimensions as a normal tape cassette.

Further, an independent supply reel 30 as described in detail below is attached to this cassette adapter 20, and inside this cassette adapter 2o, as shown in FIG. .2
B. A lid avoidance machine 1127 is provided.

The supply reel and each ms will be explained below.

[Supply Reel] As shown in FIGS. 5 and 6, the supply reel 30 includes a covered reel hub 31 on which the magnetic tape T is wound, and a disc-shaped upper part attached to both ends of the reel hub 31 in the axial direction. 7 langes 32 and a lower flange 33, and the lower flange 33 has a locking step portion 34 formed around the entire circumference thereof, which is engaged with a locking pawl 81 of a reel locking member 82, which will be described later.

Furthermore, a notch 35 for fixing a tape stopper 40, which will be described later, is formed all around the outer peripheral edge of the upper seven flange 32.

The upper flange 32 is made of, for example, a transparent synthetic resin material, and when attached to the cassette adapter 20, allows the attached magnetic tape T to pass through the window 59 formed in the upper half 22. This allows for visual confirmation.

Further, the upper half 2 is provided on the upper end surface of the reel hub 31.
A reel top 36 is formed which is pressed by a leaf spring 62 installed in the reel 2, and a shaft fitting hole 37 for inserting a reel disk (rotation drive shaft) of a VTR is formed at the lower end as shown in FIG. ing.

A plurality of protrusions 38 are formed in the shaft fitting hole 37 in the axial direction to engage with the engaging claws of the reel disk.

Further, a tape stopper 40 is fixed to the leading end side of the leader tape RT attached to the leading end of the magnetic tape T, and this tape stopper 40 is used during storage (when not in use).
A notch 3 formed on the outer peripheral edge of the upper 7 flange 32
5 and connect the leading end of the magnetic tape T to this supply reel 30.
It is designed to be fixed to

Of course, the tape stopper 40 is shown in FIGS. 5 to 7.
As shown in the figure, the tape holding part 41 and the single-shaped fixing part 4
The tape holding part 41 is formed to have a height substantially the same as the distance between the upper flange 32 and the lower flange 33, and is interposed between these flanges.

Further, the fixing part 42 is formed integrally with the tape holding part 41, and the neck part 42a is formed to have a thickness that is approximately equal to or slightly smaller than the thickness of the upper flange 32. 42 a into the notch 35 of the upper flange 32 , the lower surface of the engaging portion 42 b that continues to the upper end of the neck portion 42 a and the upper surface of the tape holding portion 41 are located outside of the upper 7 flange 32 . It is designed to hold the periphery.

Here, protrusions 43 and 44 of the engaging portion are formed on the lower surface of the engaging portion 42b, sandwiching the neck portion 42a.

Further, an engagement groove 32a is formed on the upper surface of the upper flange 32 along the outer peripheral edge as shown in FIGS. 5 to 7, and the neck portion 42a is fitted into the notch 35. When the projections 43 and 44 of the engaging portion 42b
is adapted to engage with this engagement 1i32a.

Thereby, the tape stopper 40 is click-locked to the outer periphery of the upper flange 32, and the leading end of the magnetic tape T can be reliably fixed to the supply reel 3o.

In this embodiment, since the cutout portion 35 is formed over the entire circumference of the upper seven flange 32, even if the quality of the magnetic tape T fluctuates, it can be accommodated.

In addition, the tape stopper 4o as described above is attached to the upper flange 3.
2, the outer circumferential surface of the magnetic tape T is pressed by the inner circumferential surface of the tape pressing portion 41 of this tape stopper 4o.

Therefore, in this embodiment, this tape stopper 40
The inner circumferential surface of the tape holding part 41 is formed to be approximately equal to the curvature of the outer circumference of the wound magnetic tape T (
(See Figure 20).

This allows this tape stopper 40 to be attached to the upper flange 32.
When the magnetic tape T is fixed to the magnetic tape T, the surface of the magnetic tape T can be prevented from being locally pressed and damaged or deformed.

Further, this tape stopper 40 not only fixes the leading end of the magnetic tape T to the upper 7 flange 32 as described above, but also functions as a clamper when securing the leading end of the magnetic tape T to the take-up reel 70, which will be described later. do.

Therefore, the tape holding portion 4 of this tape stopper 40
The outer surface of the tape stopper 1 is formed to have the same curvature as the outer circumferential surface of a reel hub of a take-up reel 70, which will be described later.When this tape stopper 40 is fixed to the take-up reel 70, There is no difference in level on the outer circumferential surface of the magnetic tape 71, and it is possible to prevent the wound magnetic tape T from being inadvertently damaged.

Further, the tip of the tape stopper 40 of the magnetic tape T is a tag tape TT, and this tag tape TT has a curl in the opposite direction to the curvature due to winding of the magnetic tape T, that is, outward. .

As a result, the tape stopper 40 can be supplied to the supply loop 30.
Since the tag tape TT always protrudes outward when fixed to the tag tape TT, it is easy to grasp the tag tape TT when removing the tape stopper 40 from the upper flange 32.

Note that the fixing part 42 of the tape stopper 40 is formed into a single character shape, so that the engaging part 4 between the tape pressing part 41 and the fixing part 42
2b is connected by one neck portion 42a, but the 8th
As shown in the figure, two neck portions 42a may be formed to simultaneously engage two notches 35 of the upper flange 32. In this case, the tape stopper 40
The attachment to the upper flange 32 is more secure, and the strength of the tape stopper 40 itself is improved, so durability can be improved.

Furthermore, the cutout portion 35 formed on the outer peripheral edge of the upper flange 32 may not be provided on the entire circumference of the upper seven flange 32 but may be provided only on a portion thereof.

[Cassette Adapter Overview] Next, a detailed configuration of the cassette adapter 20 to which the above-described supply reel 30 is attached will be described.

First, at the front end of the upper half 22, there are
As shown in the figure, a front M50 is pivotally supported by a bin 51, and this front lid 50 is opened when inserted into a VTR to store a magnetic tape T with a predetermined tape path formed inside the cassette adapter 20. View inside the VTR.

The front M50 is always urged in the opening direction by a spring 52 shown in FIG.

Further, at the front end of the lower half 23, a locking member 53 for locking the front lid 50 in the closed state and a locking member 53 for locking the front cover 50 when the cassette adapter 20 is inserted into the VTR are provided.
A lock release member 54 is provided which releases the locked state in conjunction with the lock release member 54.

Note that the Y front lid 50 is attached so as not to separate from the upper half 22 when the upper half 22 is opened.

Further, a locking piece 56 having a locking pawl 55 at its tip is integrally formed on the front end side of the side wall of the upper half 22, and slits 51 are formed on both sides of this locking piece 56. It can be elastically displaced in a direction perpendicular to the plane of the paper in FIG.

At a predetermined position on the side wall of the lower half 23 corresponding to the locking piece 56, an engagement hole 58 for locking the locking claw 55 is formed.

In such a cassette adapter 20, when the upper half 22 is closed to the lower half 23, the second
As shown in the figure and FIG. 3, the upper half 22 and the lower half 2
3 are reliably locked by the relative engagement between the locking claw 55 and the engagement hole 58.

Further, the external shape and dimensions of the upper half 22 and the lower half 23 are formed to be the same as those of the upper half and lower half of a normal tape cassette.
By opening the lower half 23, a cassette adapter 20 having the same external shape and dimensions as a normal tape cassette is formed, as shown in FIGS. 2 and 3.

In addition, in Figure 2, 59 is a window for checking the tape, and the third
In the figure, 60 is an opening into which the reel disk (rotation drive shaft) of the VTR is fitted when it is attached to the VTR, and 61 is the same.
This is an opening into which a VTR loading member is inserted.

Further, in FIG. 3, 63 is a reference hole for regulating the height and position of the cassette adapter 20 within the VTR, and 6465 is a groove for preventing incorrect insertion.

Furthermore, in FIG. 3, 66 is an insertion hole into which the operating rod 85 of the VTR is inserted when the cassette adapter 20 is attached to the VTR.

On the other hand, inside the upper half 22 and lower half 23,
As shown in FIG. 4, a supply reel mounting part 67 to which the supply reel 30 as described above is mounted, and a take-up reel mounting part 69 to which a take-up reel 70 as described below is mounted in advance are formed. and the supply reel mounting part 6
7 is defined by a circular partition wall 68 that surrounds substantially the entire circumference of the supply reel 30 to be attached.

[Take-up Reel] As shown in FIG. 9, the take-up reel 70 includes a covered reel hub γ1, a disc-shaped lower flange 12 attached to the lower end of the reel hub 71, and the reel hub 7.
It consists of an upper flange 73 attached to the upper end of 1.

Incidentally, an engaging step portion 78 is formed on the outer peripheral edge of the lower flange 72, similar to the lower 7 flange 33 of the supply reel 30.

Further, the reel hub 71 is also formed in substantially the same shape as the supply reel 30, but a mounting portion 74 that continues in the axial direction is formed on the outer circumferential surface of the reel hub 71.
4 so that the tape 1-flange 40 can be fitted and locked.

On the other hand, the upper flange 73 in this embodiment includes a disk portion 73a that contacts the upper surface of the reel hub 71 as shown in the figure, and three 7-rank pieces 73b extending radially from the disk portion 73a. The cutout portion 75 is formed between these seven rank pieces 73b.

As a result, when the tape stopper 40 is fixed to the part 14, the reel hub γ1 can be mounted without being obstructed by the upper flange 73, since the fingers can be inserted between the flange piece 73b and the 7-rank piece 73tl.
The tape stopper 40 can be easily attached to the recess 11 by simply sliding the engaging portion 42b along the periphery of the upper flange 73 and fitting the neck portion 42a into the notch 75. be able to.

Further, for this attachment, the above-mentioned notch 75 is formed on the outer periphery of the disc part 3a of the upper 7 flange 73 which is connected to the part 74, and the above-mentioned tape stopper 40 is attached by sandwiching this notch 75. Engagement recesses W 76.77 are formed to relatively engage with the projections 43.44, and this notch 75
At the same time, the neck portions 42a of the tapes 1 to brim 40 are engaged with the protrusions 43 in the respective engagement recesses 76 and 77.
．． 44, the leader tape RT at the tip of the magnetic tape T can be fixed to the outer periphery of the reel hub 71.

When the magnetic tape T is fixed as described above and the take-up reel 70 is rotated counterclockwise in FIG. Since the TT has an outward curl, it is always bent in a direction that strengthens the curl as shown in FIG. 10, and the tag tape TT can be brought into close contact with the reel hub 11.

Further, the reel top 71a disposed on the upper surface of the reel hub 71 is made of, for example, artificial sapphire, stainless steel,
Alternatively, this type of cassette adapter 2 is made of a relatively hard material such as artificial ruby and is used repeatedly.
The wear resistance of the reel top γ1a with respect to the leaf spring 62 at 0 is improved.

In the take-up reel 70, the reel top 71a is formed integrally with the reel hub 71, but the reel top 71a may be formed separately as shown in FIG. 11.

As a result, the use of relatively expensive artificial sapphire and the like can be reduced, and costs can be reduced.

[Reel Lock Mechanism] The cassette adapter 20 locks the rotation of the supply reel 30 and the take-up reel 70 only when the upper half 22 and the lower half 23 are open when not in use. A reel lock mechanism 2 that releases this locked state when the upper half 22 and lower half 23 are opened.
4 are provided.

As shown in FIG. 12, this reel lock i structure 24 is composed of various functional parts arranged on the lower half 23 and a lock release piece 80 formed on the upper half 22.

The functional parts disposed on the lower half 23 include a lock claw 81 formed at one end, which engages with the engagement steps 34, 78 of the lower flanges 33, 72 of the reels 30, 70, and A pair of lock levers 82 whose portions are pivotally supported on a shaft 89, and whose one end side (protruding end side) is connected to a protrusion 83 of these lock levers 82.
A first spring 84 urges the second lock claw 81 in the direction of engaging each of the engagement step portions 3478 (in the direction of the arrow), and a first spring 84 that is interlocked with the operating rod 85 of the VTR when attached to the VTR. By rotating around the shaft 86, the other end of the locking lever 82 is pressed, and each locking claw 81 is rotated about the shaft 86.
a pair of release levers 87 that are separated by 11 distances from the engaging step portions 34 and 78 of the respective lower flanges 33 and 72, and a second spring 88 that biases these release levers 87 in the direction of unlocking (in the direction of arrow B). When the upper half 22 and the lower half 23 are closed, the lock release piece 80 comes into contact with the pressing portion 88a of the second spring 88, causing it to be elastically displaced in the opposite direction of arrow B. .

In addition, the lock lever 82 and the first spring 84
A fixing member 90 is attached to the upper end side of a shaft 89 that supports the upper half 22, so that the lock lever 82 and the first spring 84 will not come off inadvertently when the upper half 22 is opened.

Such a reel lock mechanism 24 is provided with the upper half 22.
and when the lower half 23 is closed, Fig. 13 (
As shown in A), the second spring 88 is displaced in the opposite direction of arrow B by the lock release piece 80 provided on the upper half 22.

As a result, the release lever 87 is moved to the lock lever 8.
2, the lock lever 82 is displaced in the direction of the arrow by the first spring 84, and the lock pawl 81 of the lock lever 82 engages the lower flanges 33.
72 engagement step portions 34 and 78 respectively, each reel 30
．． Lock 70.

Furthermore, when this cassette adapter 20 is attached to a VTR in this state, the operating rod 85 of the VTR presses the release lever 87 and the first spring 84 This release lever 87 is displaced in the direction of arrow B against
The locked state is released by separating from the engagement step portion 34.7B of 3.78.

On the other hand, when the supply reel 30 is attached and detached, when the upper half 22 is opened and the lock release piece 80 is retracted from the pressing portion 88a of the second spring 88, as shown in FIG. As shown in the above release lever
87 is displaced in the direction of arrow B by the second spring 88.

Here, the elastic force of the second spring 88 is set to be stronger than the elastic force of the first spring 84.

Therefore, the second spring 88 resists the elastic force of the first spring 84 and displaces the lock lever 82 in the direction opposite to the arrow.
The locked state of each reel 30, 70 by the lock claw 81 is released.

In this way, the reel lock machine jlIi in this embodiment
According to No. 24, when the upper half 22 and the lower half 23 are opened when the supply reel 30 is loaded, the supply reel 3
0 and the take-up reel 70 are unlocked.

Thereby, it is possible to smoothly attach and detach the supply reel 30 and the tape stopper 40 to and from the take-up reel 70.

Furthermore, such locking and unlocking operations of the reel locking mechanism 24 are performed by a spring 88 that biases the release lever 87 and a spring 88 provided in the upper half 23,
This can be realized by a simple mechanism constituted by an operating piece 80 that elastically displaces the spring 88 in conjunction with the opening and closing of the upper half 22.

[Tape guide machine 11] The tape guide mechanism guides the magnetic tape T onto the supply reel 3.
0 to the take-up reel 70 through the front surface of the cassette adapter 20 to form a predetermined tape path without slack, and is disposed on both sides of the front surface of the cassette adapter 20.

First, the tape guide mechanism 25 on the supply reel 30 side has a guide ball 90 implanted in the lower half 23 and a guide ball 90, as shown in FIGS. The magnetic tape T is held between the guide ball 90 and a cylindrical tape guide 91 located on the outside in the width direction of the cassette adapter 20 (left side in FIG. 14) and spaced apart from the guide ball 90 by a predetermined distance. Tape pad 92 and this tape pad 9
a pad support 93 that supports 2, and this pad support 9
A spring 94 biases the tape pad 92 in the direction of separating the tape pad 92 from the guide ball 90 (in the direction of arrow C), and a spring 94 is formed on the 18-722 to press the pad support 93 when the upper half 22 is closed. and an operating piece 95 for rotationally displacing the tape pad 92 to press the tape pad 92 against the guide ball 90.

The pad support 93 has a bearing on its proximal end portion 93a.
is rotatably attached to a shaft 96 coaxial with the tape guide 91, and the tape pad 92 is attached to the tip via a flexible film 97.

Further, the tip (free end) of the spring 94 is engaged with the middle part of this pad support 93, and this spring 94 urges the pad support 93 in the direction of arrow C in the figure as described above. are doing.

Here, in the tape guide 91, as shown in FIG. A slit 91a formed on one side
Extending through.

This pad support 93 is connected to this tape guide 91.
Its rotation range is regulated by the slit.

Further, an inclined surface 93b extending downward from the upper side is formed on the outer wall of the pad support 93, so that the tip of the operation piece 95 slides into contact with this inclined surface 93b when the upper half 22 is opened. It has become.

Further, as shown in FIG. 16(^), the inner wall 93c of this pad support 93 is formed to obliquely intersect with the tape path P of the magnetic tape T shown by the two-dot wi line in the figure. As will be described later, the tag tape TT at the leading end of the magnetic tape T is guided toward the tape guide 91 by this inner wall 93c.

In such a tape guide mechanism 25, when the upper half 22 is closed, the pad support 93 is attached to the operating piece 9 of the upper half 22, as shown in FIG. 15(A).
5, the tape pad 92 attached to the tip of the pad support 93 comes into pressure contact with the guide ball 90.

As a result, the magnetic tape T is held between the guide ball 90 and the tape pad 92, and the magnetic tape (2) pulled out to the front of the cassette adapter 20 is prevented from becoming unintentionally loosened.

On the other hand, when the upper half 22 is open, the operating piece 95 of the upper half 22 is retracted from the inclined surface 93b of the pad support 93, as shown in FIG. 16(B). The pad support 93 is rotationally displaced in the direction of arrow C by the spring 94, and the tape pad 92 and guide ball 90 are separated by a predetermined distance.

Thereby, the magnetic tape T pulled out from the supply reel 30 can be passed between the guide ball 90 and the tape pad 92 very easily.

Further, the tip of the tape pad 92 is attached to a partition wall 68 forming the supply reel mounting portion 67, as shown in FIG.
The opening (i8a) formed in the partition wall G8 projects slightly inside the partition wall G8. It is formed by a continuous smooth surface.

Furthermore, the magnetic tape T wound around the supply reel 30 is
As mentioned earlier, the tag tape at the tip is curled on the outside.

Therefore, the tape stopper 40 is connected to the upper seven flange 32.
After placing the supply reel 30 on the supply reel mounting part 67 in a state where it is attached to or in a state where it is removed,
When the supply reel 30 is rotated clockwise in the drawing with fingers or the like, the leading end of the tag tape TT slides on the inner surface of the partition wall 68 and advances to the opening 68a, where it reaches the first
As shown in FIG. 7(A), the tip of the tag tape TT is hooked only by the tip of the tape pad 92 and automatically guided between the tape pad 92 and the guide ball 90.

Furthermore, when the supply reel 30 continues to rotate in this state, the tip of the tag tape TT is guided by the inner wall 93c of the pad support 93 and guided by the tape guide as shown in FIG. 17(B). 91 to the outside of the cassette adapter 20.

When the tag tape TT thus fed out is gripped and pulled, it can be pulled out toward the take-up reel 70 as shown in FIG. 16(C).

In addition, when the tape stopper 40 is attached to the upper flange 32, it comes off from the upper flange 32 by this pull-out force.

In this way, this tape guide mechanism 2 in this embodiment
According to No. 5, simply by rotating the supply reel 30, the magnetic tape T is transferred to the guide ball 90 and the tape pad 92.
A predetermined tape path can be formed between the magnetic tape T and the tape guide 91, making it extremely easy to attach the magnetic tape T to the cassette adapter 20.

In addition, in this embodiment, the bearing of the pad support 93 is located at the portion 93a, and the tape guide 91, which is a dead space, is arranged using the space. A dedicated space is no longer required.

Therefore, according to this embodiment, it is possible to improve the space factor in the tape guide mechanism 25 made up of minute components, thereby creating a wide space through which the tape stopper 40 can easily pass. can be ensured.

On the other hand, the tape guide mechanism 26 on the take-up reel 70 side is
As shown in FIG. 18(A)(B) and FIG. 19(A)(B), a tape guide 100 implanted in the lower half 23, a guide roller 101 that comes into contact with and separates from this tape guide 100, A shaft 103 for rotatably supporting the guide roller 101 is embedded in a fan-shaped support base 102, and a roller support 105 rotatably supported by another shaft 104;
a spring 106 that urges the guide roller 101 in the direction of the arrow to separate the guide roller 101 from the tape guide 100; and an upright piece 10 integrally formed with the roller support 105.
7 and is formed on the upper half 22 and this upper half 22
an operating piece 1 that comes into contact with the upright piece 107 and rotationally displaces the roller support 105 in the direction opposite to the arrow mark when the roller support body 105 is closed;
0B.

As shown in FIG. 18, the outer wall of the upright piece 107 is formed with an inclined surface 107a that continues downward from the upper side.
An inclined surface 108a at the tip of the operating piece 108 comes into sliding contact with the tip of the operating piece 108, thereby rotationally displacing the roller support 105 in the direction opposite to the arrow mark.

Further, the support stand 102 is integrally formed with a roller support body 105, and this support stand 102 is located within a fan-shaped groove 23a formed in the lower half 23, and this groove 238 allows the roller support body 105 to be formed integrally with the support stand 102. The rotation range of the support body 105 is restricted.

That is, this roller support 105 is arranged so that the guide roller 101 is connected to the tape guide 1 as shown in FIG. 19(A).
The rotation range is restricted within the range of a position separated by a relatively wide predetermined distance from 00 and a position close to it as shown in FIG.

The spring 106 and the roller support 105 are prevented from falling off the shaft 104 by a fixing member 109.

In the tape guide machine 826 as described above, when the upper half 22 is opened, the upper half 22
Since the operation piece 108 formed in the above is retracted from the upright piece 107, the guide roller 101 is urged in the direction of the arrow by the spring 106 as shown in FIG. It is separated from.

Therefore, this guide roller 101 and tape guide 100
The magnetic tape T pulled out from the supply reel 30 can be easily passed between the guide roller 101 and the tape guide 100 through a relatively wide gap formed between the guide roller 101 and the tape guide 100.

Furthermore, when the upper half 22 is open, the operation piece 108 comes into contact with the upright piece 107 and rotates the roller support 105 in the opposite direction of the arrow.
As shown in FIG. 9(B), the guide roller 101 approaches the tape guide 100 to take up slack in the magnetic tape T and form a predetermined tape path.

Here, the distance between the guide roller 101 and the tape guide 100 in this state is set to be smaller than the thickness of the tape stopper 40, as shown in FIG.

Therefore, even if the tape stopper 40 detaches from the take-up reel 70 during rewinding or the like, it will not pass between the guide roller 101 and the tape guide 100, and the detached tape 1-flange will not pass between the guide roller 101 and the tape guide 100. Accidents such as damage to the magnetic head or the like in the VTR can be reliably prevented.

Further, when the upper half 22 is closed, the side piece 108b of the operation piece 108 comes into contact with the side wall of the upright piece 107 and restricts the displacement of the upright piece 107 in the direction of the arrow. Even if the tape stopper 40 detached from the take-up reel 70 collides violently between the guide roller 101 and the tape guide 100, it will not pass through the guide roller 101 and the tape guide 100, and from this point of view, the above-mentioned accident can be avoided. This can be reliably prevented from occurring.

As described above, the tape guide mechanism 26 in this embodiment functions as a prevention means to prevent the tape stopper 40 separated from the take-up reel 70 from coming out to the front of the cassette adapter. By utilizing the tape guide 100 and guide roller 101, it is possible to prevent an accident in which the tape stopper 40 detached from the take-up reel 70 is pulled out into the VTR.

Note that the above-mentioned accident may be prevented from occurring by using another independent mechanism that prevents the tape stopper 40 from being pulled out from the cassette I adapter 20 with the upper half 22 and lower half 23 opened. Of course.

[Front lid avoidance mechanism] The front lid avoidance mechanism 27, as shown in FIG.
The cam surface 110 formed on the inner surface of the side wall of 0 and the front surface M5
The cam surface 110 is composed of a protrusion 111 projecting above the outer surface of the side wall of the lower half 23 opposite to the inner surface of the side wall of the lower half 23, and the protrusion 111 and the cam surface 110 are brought into contact with each other as the upper half 22 opens and closes. Therefore, the front M50 is slightly opened up.

That is, as shown in FIG. 21 (8), the cam surface 110 is curved so that its lower side is slightly swollen, and when the upper half 22 is closed, the cam surface 110 is pushed by the projection 111 to form the 21st As shown in Figure (8), the front lid 5
Open 0.

As a result, the magnetic tape T wound between the supply reel 30 and the take-up reel 70 is transferred to the cassette adapter 20.
Even if the upper half 22 is closed in a state in which the front surface of the magnetic tape T is slightly loosened, the side surface of the magnetic tape T will not be caught by the lower end of the front surface of the front lid 50.

Further, the protrusion 111 is formed above the side wall of the lower half 23, and the cam surface 110 is formed so that the upper part is concave, so that the upper half 22 is attached to the lower half 23 as shown in FIG. After opening, the protrusion 111 is aligned with the cam surface 1.
Completely away from 10.

This prevents the *M avoidance mechanism 27 from interfering with the normal opening operation of the front lid 50.

In this embodiment, an inclined surface 112 which is inclined from the inside to the outside is formed on the front lower end surface of the front cover 50, so that even if the magnetic tape T is caught a little, it will slip and come off immediately. It has become.

As described above, according to the cassette adapter 20 of this embodiment, by providing the front cover avoidance mechanism 27 as described above, it is possible to prevent damage to the magnetic tape T when closing the upper half 22. .

[First step of attaching the supply reel to the cassette adapter:
The operation of attaching the supply reel 30 to the cassette adapter 20 configured as described above will be explained.

First, the cassette adapter 20 in which the upper half 22 and the lower half 23 as described above are closed is attached to the upper half 2
2 while bending the locking piece 56 formed in the locking piece 56 and releasing the engagement state between the locking claw 55 provided at the tip of the locking piece 56 and the engaging hole 58 formed in the lower half 23. upper half 22
to open.

In this state, the lock pawl 81 of the lock lever 82 in the reel lock mechanism 24 is in the locked position, that is, each lower flange 33 of the supply reel 30 and the take-up reel 70.
The reels 30 and 70 are retracted from a position where they engage with engagement steps 34 and 78 formed on the outer peripheries of the reels 30 and 72 to lock the rotation of the reels 30 and 70, respectively.

In addition, a supply reel mounting portion 67 is provided at a predetermined position of the lower half 23.
The tape pad 92 of the tape guide gll125 on the supply reel 30 side slightly protrudes inward from the opening 68a of the partition wall 68 forming the supply reel 30 side, and each operation piece 95, 108 formed on the top soil half 22 Bat support 9 in the tape guide mechanism on the reel 30 side
3 and the inclined surface 101 of the upright piece 107 in the tape guide IN$26 on the take-up reel 70 side.
By retracting from a respectively, the supply reel 30
The tape pad 92 in the tape guide mechanism 25 on the side is spaced apart from the guide ball 90, and the guide roller 101 in the tape guide mechanism on the side of the take-up reel 10 is spaced apart from the tape guide 100.

In this state, the upper flange 3 of the supply reel 30
2 with the tape stopper 40 attached or removed to free the tag tape TT at the leading end of the magnetic tape T, the supply reel 30 is mounted on the supply reel mounting portion 67 formed on the lower half 23. place

Here, since the lock pawl 81 of the lock lever 82 in the reel lock mechanism 24 is retracted from the lock position as described above, the supply reel 30 cannot be easily placed and stored in the supply reel mounting portion 67. can.

Next, the placed supply reel 30 is gently rotated in the tape payout direction using fingers or the like.

As a result, the leading end of the tag tape TT advances to the opening 68a while sliding on the inner surface of the partition wall 68 forming the supply reel mounting portion 67, and is hooked on the tape pad 92 protruding from the opening 68a.

Then, when the supply reel 30 is quietly rotated, since the guide ball 90 and the tape guide are spaced apart from each other by a relatively wide predetermined distance, the leading end of the tag tape TT is connected to the tape pad 92 and the pad. The guide ball 9 is guided by the inner side 1393C of the support body 93.
0 and the tape pad 92 and through the tape guide 91 to the front of the cassette adapter 20.

Thereafter, the tag tape TT fed out to the front is grasped and pulled out to the tape guide machine w#26 on the take-up reel 10 side, and passed between the tape guide 100 and the guide roller 101 in this tape guide mechanism 26 to the take-up reel 70. lead to.

Here, when the upper half 22 is opened, the tape guide 100 and the guide roller 101 in the tape guide mechanism 26 are separated by a relatively wide distance. The magnetic tape T can be easily passed between the two.

Then, the tape holding part 41 of the tape stopper 40 attached to the tag tape TT is fitted into the mounting part 74 of the take-up reel 70, and the neck part 42a of the tape stopper 40 is attached to the outer peripheral edge of the upper flange 73. The tag tape TT is fixed to the reel hub 71 of the take-up reel 70 by engaging with the notch 75 formed in the tag tape TT.

As a result, the magnetic tape T pulled out from the supply reel 30 is wound between the supply reel 30 and the take-up reel 70 via the respective tape guide mechanisms 2526.

Here, since the lock pawl 81 of the lock lever 82 in the reel lock mechanism 24 is retracted from the take-up reel 70, the take-up reel 70 can be freely rotated. The work of fixing the tape stopper 40 can be done easily.

Further, in this embodiment, since the upper flange 73 of the take-up reel 70 is formed by the flange piece 73b, the reel hub 71 can be attached without the portion 14 etc. being obstructed by the upper flange 73. The tape stopper 40 can be easily fixed to the take-up reel 70.

Further, since the notch 75 with which the neck portion 42a of the tape stopper 40 engages is formed only on the outer periphery of the upper flange 73 of the take-up reel 70, the neck portion 42a
The work of fixing this tape stopper 40 to the take-up reel can be made much easier than when the tape stopper 40 is formed at the top and bottom of the tape stopper 40 and engaged with the upper and lower flanges 72, 73 at the same time.

Thereafter, the take-up reel 10 is rotated to take up the magnetic tape, and after taking up the slack in the magnetic tape T located on the front surface of the cassette adapter 20, the upper half 22 is closed.

Here, since the cassette adapter 20 in this actual case is equipped with the front cover avoidance mechanism 27 as described above, even if the magnetic tape T is loosened to some extent and protrudes to the front, the front cover 50 does not allow the magnetic tape T to be removed. The magnetic tape T will not be caught, and the magnetic tape T will not be inadvertently damaged.

Then, by closing the front lid 50 as described above,
The lock claw 81 of the lock lever 82 in the reel lock mechanism 24 engages with each reel 30.70 to lock these reels 30.70, and furthermore, the supply reel 3
Guide ball 90 in the tape guide mechanism 25 on the 0 side
The tape pad 92 is pressed into contact with the magnetic tape T via the magnetic tape T, and the tape guide mechanism 26 on the take-up reel 70 side
A guide roller 101 approaches the tape guide 100, thereby taking up the slack of the magnetic tape T within the cassette adapter 20 and forming a predetermined tape path.

(Effects of the Invention) As is clear from the above description, according to the present invention, the tape guide mechanism that guides the magnetic tape to form a predetermined tape path is exposed to the outside when the upper half and the lower half are opened. With this configuration, it is possible to perform a tape winding operation in which the magnetic tape is wound around the tape guide mechanism to form a tape path in this state.

Therefore, according to the present invention, it is not necessary to provide slits for drawing out the tape in the upper half and lower half as in the conventional case, and since there is no need to pass the magnetic tape through these slits, it is possible to wind the magnetic tape extremely easily. can be equipped.

In addition, since the front lid is attached to the upper half,
There is no need to hold the front cover in an open state during the work of winding the magnetic tape, and from this point of view as well, the tape winding work can be facilitated.

Furthermore, since the supply reel is completely housed within the upper and lower halves, a portion of the reel case of the supply reel may protrude from the surface of the cassette adapter as in the conventional case.
Inconveniences such as the supply reel being carelessly removed from the cassette adapter and falling can be reliably prevented.

Further, the reel locking mechanism of the present invention locks the rotation of each reel when the upper half and the lower half are opened, and releases the locked state when each half is opened, so that the supply reel is attached. At this time, the supply reel and take-up reel can be rotated freely, which also facilitates the tape winding operation.

Generally speaking, as described above, the reel lock mechanism of the present invention locks the rotation of each reel when the upper half and lower half are opened, so that the reel lock mechanism of the present invention locks the rotation of each reel when the upper half and lower half are opened. Unnecessary slack can be prevented.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the overall configuration of the cassette adapter and supply reel according to the present invention, FIG. 2 is a perspective view of the cassette adapter seen from the upper half side, and FIG. 3 is a side view of the cassette adapter seen from the lower half side. FIG. 4 is a plan view showing the upper half and lower half opened, and FIG.
The figure is a perspective view of the supply reel, and Figure 6 is the Vl in Figure 5.
-VI sectional view, Fig. 7 is an enlarged perspective view of the main part of the supply reel, Fig. 8 is an enlarged perspective view of the main part showing another embodiment of the tape stopper, and Fig. 9 is a partially cutaway view showing the take-up reel. FIG. 10 is a perspective view of the main parts of the take-up reel, FIG. 11 is a side sectional view of another embodiment of the take-up reel, and FIG. 12 is a perspective view of the reel locking mechanism. 13
14 and 15 are perspective views showing the tape guide mechanism on the supply reel side, respectively.
)HajJ-)Lt Rock 1al! 17(A) to (C) are plan views showing the guiding operation of the magnetic tape, and FIG. 18(A) (B)
19A and 19B are perspective views showing the tape guide mechanism on the take-up reel side, FIG. 20 is a perspective view showing the operating state of the tape guide mechanism, and FIG. 20 shows the tape guide on the take-up reel side 21A to 21C are side views each showing the front cover avoidance mechanism, and FIG. 22 is a perspective view showing a conventional example. 20... Cassette adapter, 21... Hinge part, 2
2... Upper half, 23... Lower half, 24... Reel lock mechanism, 25.26... Tape guide mechanism, 27... Front lid avoidance mechanism, 30... Supply reel, 40
... Tape stopper, 50 ... Front lid, 70 ... Take-up reel, 92 ... Tape pad (guide piece), 100 ... Tape guide, 101 ... Guide roller. Patent applicant: Japan Victor Co., Ltd. Representative Umiki Engraving of Japanese drawing (no change in content) Engraving of drawing in Figure 9 (U with no change in content) 3b / Engraving of drawing in Figure 18 (no change in content! 2) Figure 17 Figure 1D Figure 20 Figure 21 Procedural amendment form % formula % 1. Indication of the case 1988 Patent Application No. 301393 2゜Name of the invention Cassette adapter 3゜Relationship with the case

Claims (1)

[Scope of Claims] Consisting of an upper half and a lower half connected by a hinge so as to be openable and closable, a supply reel wound with magnetic tape is attached and detached with the upper half and the lower half open. , a cassette adapter that stores a take-up reel in advance, the front cover being rotatably attached to the upper half and covering the front of the cassette adapter when the upper half and the lower half are closed; When the half and lower half are opened, face the outside,
a tape guide mechanism that forms a predetermined tape path within the cassette adapter by guiding the magnetic tape pulled out from the attached supply reel to the take-up reel through the front surface of the cassette adapter; and locks the rotation of the attached supply reel and take-up reel when the upper half and the lower half are closed, and releases this locked state when the upper half and the lower half are opened. A cassette adapter characterized by comprising a reel lock mechanism configured to.