JPH02146162A - Cassette adapter - Google Patents

Abstract

PURPOSE:To prevent a magnetic tape from flawing at the time of closing an upper half by providing a mechanism for turning a front lid in the opening direction in accordance with the closing motion of the upper half. CONSTITUTION:When the upper half 22 is closed, a cam surface 110 is pressed by a protrusion 111 of a front lid evading mechanism 27, so that a front lid 50 is opened. Consequently, even when the upper half 22 is closed under such a state that the magnetic tape wound around between a supply reel and a take-up reel is more or less slackened toward the front face of the cassette adapter 20, a side surface of the magnetic tape can be prevented from being caught by a lower end of a front face of the front lid 50. Then, the protrusion 111 is completely apart from the cam surface 110 after closing the upper half 22 with a lower half 23, thus keeping the normal opening motion of the front lid 50 free from interruption.

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 cover 7 on the front.
The tape cassette is kept open at all times, has the same external shape as a normal tape cassette, and is composed of a cassette adapter 3 that houses a take-up reel 2, and the supply reel 1 is housed 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.
Pull out the end of the magnetic tape T wound on the cassette adapter 3 and insert the slit 5 formed on the bottom of the cassette adapter 3 and the slit 9 formed on the tape guide O and the 7 langes 8 of the take-up reel 2. Through this take-up reel 2
The locking pin 11 attached to the end of the magnetic tape T is then engaged with the engagement hole 12 of the take-up reel 2 to form a predetermined tape path similar to a normal tape cassette. It is supposed to be done.

Further, the bottom surface (top surface in the figure) of the reel case 4 is attached to the cassette adapter 3 when the reel case 4 is attached to the cassette adapter 3 and locked with the locking member 13.
The bottom surface and the road surface form part of the external shape of the cassette adapter 3, allowing it to be used in the same way as a normal 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 passed through a thin slit 5 formed on the bottom surface of the cassette adapter 3.
It is necessary to pass the magnetic tape through the tape guide 6 or to engage the locking pin 11 attached to the end of the magnetic tape with the engagement hole 12 of the take-up reel 2. It was very troublesome.

Further, the front cover 7, which is attached to the conventional cassette adapter, is always biased in the closing direction and is formed so as to cover the front surface of the cassette adapter.

Therefore, when winding the tape as described above, the front cover 7 must be held in an open state with fingers or the like to retreat the front cover 7 from the tape path, resulting in extremely poor work efficiency.

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
The magnetic tape T cannot be guided to the reel hub 10 of the take-up reel 2 unless the two are matched, and from this point of view as well, the work of winding the magnetic tape T is extremely troublesome.

Furthermore, the height position of the tape reel in the tape cassette within the shell is an extremely important factor in obtaining stable tape running of the magnetic tape T within the VTR, but in the conventional tape cassette as described above, There is a possibility that the height position of the supply reel 1 within the cassette adapter 3 may vary due to unintentional variations in the machining 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 part 3a is connected to the force setting 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, it can become attached to the loading member in the VTR. This is done to prevent inadvertent contact with the magnetic tape and to prevent damage to the magnetic tape.

However, in the above-described cassette adapter 3, in order to guide the magnetic case 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 and 9, and the magnetic tape T is inserted into the cassette adapter. It becomes virtually impossible to guide the winding material through the slit 5 of No. 3 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 locking mechanism.

The present invention has been made in view of the above-mentioned circumstances, and is based on h3
An object of the present invention is to provide a new cassette adapter that can solve the drawbacks of the conventional cassette adapter.

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; A reel lock mechanism is provided to lock the rotation of the supply reel and take-up reel, and a front lid rotation Mtj! that rotates the front lid in the opening direction when forming the upper half and the lower half. The present invention provides a cassette adapter characterized by having a lateral side.

(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.
2 and a lower half 23, and by closing these upper half 22 and lower half 23 as shown in FIGS. 2 and 3, the external shape is the same as that of a normal tape cassette. and dimensions.

Further, an independent supply reel 30 as described in detail below is attached to this cassette adapter 20, and inside this cassette adapter 20, as shown in FIG. 4, a new reel lock '64 Wi 24 and a tape guide are installed. Mechanisms 25, 26 and a lid avoidance mechanism 27 are provided.

The supply reel and each mechanism 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 TS is wound, and a disc-shaped upper flange attached to both axial ends of the reel hub 31. 32 and a lower flange 33, and on the outer peripheral edge of the lower flange 33, an engagement step 34 is formed over the entire circumference, with which a lock pawl 81 of a reel lock member 82, which will be described later, engages.

Further, 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 flange 32.

Note that the upper flange 32 is made of, for example, transparent synthetic wood 1f.
When the magnetic tape T is attached to the cassette adapter 20, the attached magnetic tape T is attached to the upper half 2.
It can be visually recognized through a window 59 formed in 2.

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 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.

In the shaft fitting hole 37, a number of protrusions 38 are formed 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 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

That is, the tape stopper 40 is
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 7 flange 33, and is interposed between each of these flanges.

Further, the fixing part 42 is integrally formed with the tape holding part 41, and by forming the neck part 42a in an X1 shape that is approximately equal to or slightly smaller than the thickness of the upper flange 32, this neck part 42a is formed integrally with the tape holding part 41. When the portion 42a is fitted into the notch 35 of the upper flange 32, the lower surface of the engaging portion 42b that is continuous with the upper end of the neck portion 42a and the upper surface of the tape holding portion 41 are located outside the upper flange 32. It is designed to hold the periphery.

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

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 groove 32a.

As a result, 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 30.

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

Further, a tape stopper 40 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.

In addition, this tape stopper 40 fixes the leading end of the magnetic tape T to the upper flange 32 as described above, and 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. .

Therefore, the tape presser 12 of this tape stopper 40
The outer surface of 141 is formed to have the same curvature as the outer circumferential surface of the reel hub of take-up reel 10, which will be described later.When this tape stopper 40 is fixed to take-up reel 10, reel hub 71 of take-up reel 70 There is no difference in level on the outer circumferential surface of the magnetic tape T, and it is possible to prevent the wound magnetic tape T from being inadvertently damaged.

Further, the tip of the tape stopper 4o of the magnetic tape T is a tag tape TT, and this tag tape 1■ has a curling tendency in the opposite direction to the curvature due to the winding of the magnetic tape T, that is, outward. There is.

This allows the tape stopper 40 to be supplied while the tape stopper 40 is
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 7 langes 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 7 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 above-mentioned 18-722, 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 lid 50 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 M50 in the open state and a lock release for releasing the locked state in conjunction with the locking member 53 when the cassette adapter 20 is inserted into the VTR. A member 54 is provided.

Note that the front i50 is attached so that it does not intrude 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 opened 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 forming the upper part 8-723 111, 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 FIG. 2, 59 is a window for recognizing the tape M1, and in FIG. 3, 60 is an opening into which the reel disk (rotation drive shaft) of the VTR is fitted when it is installed in the VTR; 61 is an opening into which a loading member of the same VTR is inserted.

Further, in FIG. 3, 63 is an lt% 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 the take-up reel 10 as described below is mounted in advance are formed. and the supply reel mounting part 6
1 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 reel hub 71 with a lid, a disc-shaped lower flannon 72 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 engagement step portion 78 is formed on the outer peripheral edge of the lower 7 flange 72, similar to the lower flange 33 of the supply reel 30.

Further, the reel hub 11 is also formed in substantially the same shape as the supply reel 30, but a mounting portion 74 is formed on the outer peripheral surface of the hub 11 and extends in the axial direction.
4 so that the tape stopper 40 can be fitted and locked therein.

On the other hand, the upper flange 73 in this embodiment is made up of a disk portion 73a that comes into contact with the upper surface of the reel hub 71 and three flange pieces 73b that extend radially from the disk portion 73a, as shown in the figure. The notch 75 is formed between these flange pieces 73b.

As a result, when attaching the reel hub 71, the upper flange 7
3, by simply sliding the engaging portion 42b of the tape stopper 40 along the periphery of the upper flange 73 and fitting the neck portion 42a into the notch 75. The hub 11 can be easily attached to the portion 74.

Further, in this installation, the notch 75 is formed on the outer periphery of the disk portion 73a of the upper flange 73 that continues to the portion 74, and the protrusion of the tape stopper 40 is sandwiched between the notch 75. Engagement recesses 76 and 77 are formed to engage relatively with the notches 75 and 43, and at the same time when the neck portion 42a of the tape stopper 40 is engaged with the notch 75, a projection is formed in each of the engagement recesses 76 and 77. Section 43.4
4 engages with each other, the leader tape RT at the tip of the magnetic deso 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. 9 to wind up the magnetic tape T, the tag tape at the leading end of the magnetic tape T is 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 T can be brought into close contact with the reel hub 71.

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 abrasion resistance of the reel top 71a against the leaf spring 62 at zero 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 amount of relatively expensive artificial sapphire etc. to be used can be reduced, and costs can be reduced.

[Reel Lock Mechanism] The cassette adapter 20 has a mechanism that 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 opened once when not in use. A reel lock mechanism 24 is provided which releases the locked state when the upper half 22 and lower half 23 are opened.

As shown in FIG. 12, this reel lock mechanism 24 is comprised 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 arranged on the lower half 23 include lock claws 81 formed at one end to engage with the engagement step portions 34.78 of the lower seven flange 33.72 of each reel 30.70, and A pair of lock levers 82 whose middle portions are pivotally supported by a shaft 89, and whose one end side (free end side) is connected to a protrusion 83 of these lock levers 82.
A first spring 84 biases the second lock claw 81 in the direction (six arrow directions) to engage each of the engagement step portions 3418, 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 each of the lock levers 82 is pressed, and each of the lock pawls 81 is rotated.
There are a pair of release levers 87 that separate the release levers 87 from the engagement step portions 34 and 78 of each lower flange 3372, and a second spring 88 that biases these release levers 87 in the direction of unlocking (in the direction of arrow B). Upper half 2 above
When the second spring 2 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 and is bent so as 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 do not come off unnecessarily 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 six directions of arrows by the first spring 84, and the lock pawl 81 of the lock lever 82 engages the lower flanges 33.
．． Each reel 3 is engaged with the engagement steps 34 and 78 of 72, respectively.
Lock 0.70.

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 The release lever 87 is displaced in the + direction of the arrow 13.7' against this, whereby the lock pawl 81 of the lock lever 82 is separated from the engaging stepped portion 34.7B of each lower flange 33.78. The lock status is released.

On the other hand, ? of the supply reel 30? i When performing IIR, the upper half 22 is opened and the unlocking piece 80 is opened.
When the release lever 87 is retracted from the pressing portion 88a of the second spring 88, the release lever 87 is displaced in the direction of arrow B by the second spring 88, as shown in FIG. 13(B).

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, in this embodiment, the reel lock mechanism 24
According to the above, when the upper half 22 and the lower half 23 are opened when the supply reel 30 is attached or detached, the lock state of the supply reel 30 and the take-up reel 70 is released.

Thereby, the supply reel 30 can be smoothly attached and detached, and the tape stopper 40 can be smoothly attached and detached 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 Mechanism] The tape guide mechanism guides the magnetic tape T onto the supply reel 3.
0 to the take-up reel 701.0 through the front surface of the cassette adapter 20. : Guides the tape to form a predetermined tape path without slack, and is provided on both sides of the front surface of the cassette adapter 20.

First, as shown in FIGS. 14 to 16 (^) (B), the tape guide mechanism 25 on the supply reel 30 side is connected to a guide ball 90 implanted in the lower half 23, and from this guide ball 90. A cylindrical tape guide 91 is located on the outside in the width direction of the cassette adapter 20 (on the left side in FIG. 14) and is spaced apart from the guide ball 90 by a predetermined distance, and the magnetic tape T is held between the guide ball 90 and the tape guide 91. A pad 92, a pad support 93 that supports the tape pad 92, a spring 94 that biases the pad support 93 in a direction in which the tape pad 92 moves away from the guide ball 90 (in the direction of arrow C), and the upper half. 22, and an operating piece 95 that rotationally displaces the pad support 93 to press the tape pad 92 against the guide ball 90 when the upper half 22 is closed.

The butt support 93 has a bearing on the proximal end portion 93a.
is rotatably attached to a seam knot 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 midway portion of this pad support 93, and this spring 94 urges the bat 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 of the
Extending through.

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

Furthermore, an inclined surface 93b extending downward from the upper side is formed on the outer wall of the pad support 93, and the tip of the operation piece 95 slides into contact with this inclined surface 93b when the upper half 22 is closed. It looks like this.

Further, as shown in FIG. 16(A), the inner wall 93c of the bat support 93 is formed to be oblique to the tape path P of the magnetic tape T shown by the chain double-dashed line in the figure. As will be described later, the inner wall 93c guides the leading end of the magnetic tape T toward the tape guide 91.

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

Thereby, the magnetic tape T is held between the guide ball 90 and the tape pad 92, and the magnetic tape T 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 bat support 93, as shown in FIG. 16(B). The bat support 93 is rotationally displaced in the direction of arrow C by the spring 94, and the tape pad 92 and the 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 extremely 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 partition wall 68 slightly protrudes inward through an opening 68a formed in the partition wall 68, and the partition wall 68 is formed up to the vicinity of the guide ball 90, and its inner surface is flat except for the opening 68a. It is formed from a continuous smooth surface.

Roughly speaking, 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 attached to the upper 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 by hand or the like in the direction of one turn in the figure, the tip of the tag tape TT will be attached to the partition wall 68.
The tag tape TT slides on the inner surface of the tape pad 92 until it reaches the opening 68a, where the tip of the tag tape TT is hooked only by the tip of the tape pad 92 and is connected to the tape pad 92, as shown in FIG. 17(A). It is automatically guided between the guide ball 90 and the guide ball 90.

Further, when the supply reel 30 continues to rotate in this state, the leading end of the tag tape TT is guided by the inner wall 93c of the butt support 93 and moves through the tape guide 91 as shown in FIG. 17(8). via cassette adapter 2
Extended outside of 0.

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 Taves 1-flange 40 is attached to the upper flange 32, it comes off from the upper flange 32 due to this pulling 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 part 93a of the pad support 93 is arranged by utilizing the dead space for mounting the tape guide 91. 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 composed of minute functional parts, thereby creating a large space through which the tape stopper 40 can easily pass. can be secured.

On the other hand, the tape guide mechanism 26 on the take-up reel 70 side is
The tape guide 1 installed in the lower half 23 as shown in FIGS. 18(A) and 19(B) and FIG. 19(8)(B)
00, and the guide “1” that comes into contact with and separates from this tape guide 100.
- a roller support 105 in which a shaft 103 for rotatably supporting the guide roller 101 is implanted in a fan-shaped support base 102 and rotatably supported by another shaft 104; This roller support 105
a spring 106 that urges the guide roller 101 in the direction of arrow Dh 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;
It consists of 08.

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 in a fan-shaped groove 23a formed in the lower half 23, and this groove 23a allows the roller support body 105 to The rotation range of the support body 105 is restricted.

That is, this O-La supporter 105 is arranged so that the guide roller 101 is connected to the tape guide 1 as shown in FIG.
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 104711 by a fixing member 109.

In the tape guide mechanism 26 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, the detached tape stopper 40 will not pass between the guide roller 101 and the tape guide 100. V
Accidents that may damage the magnetic head or the like in the TR 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 prevented. This can be reliably prevented from occurring.

In this way, the tape guide mechanism 26 in this embodiment is arranged so that the tape stopper 4 is removed from the take-up reel 70.
This tape guide mechanism 26 functions as a removal prevention means to prevent 0 from appearing on the front of the cassette adapter.
By using the tape guide 100 and the guide roller 101 that constitute the tape guide 100 and the guide roller 101, it is possible to prevent an accident in which the tape stopper 40, which has been removed from the take-up reel 70, is pulled out into the VTI dog.

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 adapter 20 with the upper half 22 and lower half 23 closed. Of course.

[[Y1 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 this front lid 5
It is composed of a protrusion 111 formed to protrude 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 come into sliding contact as the upper half 22 opens and closes. Therefore, the front lid 50 is slightly opened.

That is, as shown in FIG. 21(A), 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 protrusion 111 to form the 21st As shown in figure (B), 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 opened with the front side slightly loosened, the side surface of the magnetic tape T will not be caught by the front lower end of the front M50.

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 closing, the protrusion 111 is on the cam surface 1.
Completely away from 10.

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

In this embodiment, an inclined surface 112 is formed on the front lower end surface of the lid 50, which is inclined from the inside to the outside, 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. .

Further, the avoidance operation of the front cover avoidance mechanism 27 according to the present embodiment is realized by a simple configuration of a cam surface 110 formed on the front cover 50 and a protrusion 111 formed on the lower half 23. Since the configuration can be simplified, such a lateral lateral lateral tectorial gyrus MIa 27 can be realized at low cost.

[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, which has the upper half 22 and the lower half 23 as described above, is inserted into 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 10.
The reels 30 and 70 are engaged with engagement steps 3478 formed on the outer circumferences of the reels 30 and 72 to lock the rotation of the reels 30 and 70.

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 mechanism 25 on the supply reel 30 side slightly protrudes inward from the opening 68a of the partition wall 68 forming the upper half 2.
Each operation piece 95, 108 formed in 2 is connected to the para 1 support 93 in the tape guide mechanism on the supply reel 30 side.
and the inclined surface 107a of the upright piece 107 in the tape guide mechanism 26 on the take-up reel 70 side, the tape pad 92 on the tape guide mechanism 25 on the supply reel 30 side is removed from the guide ball 90. The guide roller 1 in the tape guide mechanism on the take-up reel 70 side is separated from the
01 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 locking pawl 81 of the O-lock lever 82 in the reel locking mechanism 24 is retracted from the locking 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, the tip of the tag tape TT is connected to the tape pad 92 and the pad support because the guide ball 90 and the tape guide are separated by a relatively wide predetermined distance. It is guided by the inner wall 93C of the body 93 and is fed out to the front of the cassette adapter 20 between the guide ball 90 and the tape pad 92 and through the tape guide 91.

Thereafter, the tag tape TT that has been fed out to the front is grasped and pulled out to the tape guide mechanism 26 on the take-up reel 70 side, and the tape guide 1 in this tape guide mechanism 26 is
00 and the guide roller 101 and lead to the take-up reel 70.

Here, when the upper half 22 is opened, the tape guide 100 in this tape guide @lI42G
Since the tape guide 100 and the guide roller 101 are separated by a relatively wide distance, the magnetic tape T can be easily passed between the tape guide 100 and the guide roller 101.

Then, the tape holding part 41 of the tape stopper 40 attached to the tag tape T is fitted into the mounting part 74 of the take-up reel 70, and the neck part 42a of the tape stopper 40 is inserted outside the upper flange 73. The tag tape TT is wound by engaging the notch γ5 formed on the periphery of the reel hub 71 of the reel 70.
Fixed to.

As a result, the magnetic tape (2) pulled out from the supply reel 30 is wound between the supply reel 30 and the take-up reel 70 via the tape guide machines $25.26.

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 rotated freely. The work of fixing the tape stopper 40 can be performed extremely easily.

Further, in this embodiment, the upper flange 73 of the take-up reel 70 is a flange piece. 3b, the attachment of the reel hub 71 is not obstructed by the upper flange 73, and from this point of view as well, the tape stopper 40 can be easily fixed to the lip removing reel 70.

Furthermore, 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 seven flange 73 of the take-up reel 70, the neck portion 42a of the tape stopper 40 engages with the notch 75.
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 seven flange 72, 73 at the same time.

Thereafter, the take-up reel 70 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 embodiment is equipped with the front cover mechanism 27 as described above, even if the magnetic tape T is loosened to some extent and protrudes to the front, the magnetic tape T can be moved to the front surface of the front cover 50. This prevents the magnetic tape T from getting caught and causing unnecessary damage to the magnetic tape T.

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, there is no need to provide a slit for drawing out the tape in the upper half or the lower half as in the conventional case, and there is no need to pass the magnetic tape through the slits, making it extremely easy to draw the magnetic tape. It can be wrapped around.

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 front cover rotation structure of the present invention rotates the front cover in the opening direction when closing the upper half and the lower half to retract the front lower end of the front path from the tape path. Even if the magnetic tape on the front surface of the cassette adapter is somewhat loose, it is possible to prevent an accident in which the lower end of the front surface of the front cover catches the magnetic tape and causes damage.

[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 perspective view of the cassette adapter seen from the lower half side. FIG. 4 is a plan view showing a state in which the upper half and lower half are assembled into TFTL, FIG. 5 is a perspective view of the supply reel, FIG. 6 is a sectional view taken along line Vl-Vl in FIG. 8 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, FIG. 9 is a partially cutaway perspective view of the take-up reel, and FIG. 10 is a perspective view of the main part of the supply reel. Similarly, FIG. 11 is a side sectional view showing another embodiment of the take-up reel, FIG. 12 is a perspective view showing the reel locking mechanism,
Fig. 13 (8) (B) is a side view of the main part showing the operating state of the beam lock mechanism, Figs. 14 and 15 are perspective views showing the tape guide IIMFR on the supply reel side, Fig. 16 (A) (B) is a plan view showing the operating states of the reel locking mechanism, FIGS. 17(A) to (C) are plan views showing the magnetic tape guiding operation, and FIGS. 18(A) and (B) are plan views showing the operating states of the reel lock mechanism. 19th perspective view showing each tape guide mechanism on the reel side;
Figures (A) and (B) are perspective views showing the operating states of the tape guide mechanism, Figure 20 is a plan view showing the relationship between the tape guide iM4 on the take-up reel side and the tape stopper, and Figure 21 (^) -(C) are side views showing the front lid 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: Kunio Kawamizu, Representative of Victor Japan Co., Ltd. Engraving of the drawing (no change in content) Engraving of the foil drawing, Figure G (no change in content)' Fig. 17 Fig. 10 Fig. 20 (C Kari No. 2 Cf Mei Fig. 22 Procedural amendment writing method) % formula % 1. Indication of the case 1988 Patent Application No. 301394 2. Name of the invention Cassette adapter 3. Amendment Relationship with the case of the person who did the patent application Address of the patent applicant: 3-12-4 Moriya-cho, Kanayō-ku, Yokohama-shi, Kanagawa Prefecture
, Date of amendment order March 28, 1989 5. Drawing subject to amendment 6. Contents of amendment (shipping port)

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; a reel locking mechanism provided on the half to lock rotation of the supply reel and the take-up reel; and a front lid avoidance mechanism for rotating the front lid in an opening direction when closing the upper half and the lower half. A cassette adapter characterized by being equipped with.