JPH02146159A - Cassette adapter - Google Patents

Abstract

PURPOSE:To facilitate the winding of a magnetic tape by fitting a front lid freely turnably to an upper half and providing a lower half with a tape guide mechanism for forming a prescribed tape path and a lock mechanism for a supply reel and a take-up reel. CONSTITUTION:The front lid 50 which is always energized in a closing direction by a spring 52 is provided at the front end of the upper half 22. The tape guide mechanisms 25 and 26 on the supply reel side and the take-up reel 70 side are disposed on both sides of the front face of the lower half 23, and the magnetic tape drawn from the supply reel mounted on a supply reel mounting part 67 is guided by the take-up reel to form the prescribed tape path, and since the tape guide mechanisms 25 and 26 can face to the exterior when the upper half 22 and the lower half 23 are opened, the magnetic tape can easily be wound up. Moreover, the lower half 23 is provided with the reel lock mechanism 24, and when the upper half 22 is opened during nonuse, the supply reel and the take-up reel 70 are locked up in rotation.

Description

Detailed Description of the Invention (Field of Industrial Application) 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.

(Conventional Technique #4) 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. V while stored in this tape force set 1~
By configuring the magnetic tape so that it can be attached to the TR, 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 has been used to connect the tape force set to the main body (cassette adapter).
The tape cassette can be used by attaching a predetermined tape reel to the tape cassette body as needed, thereby significantly reducing the storage space and making handling easier. Proposed.

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 unit 3a through an opening formed on the lower surface (the upper surface in the figure).

In such a tape cassette, after MWing the supply reel 1 to the cassette adapter 3, the magnetic tape T wound around the supply reel 1 is inserted while holding the front cover 7 in an open state with fingers or the like. The reel hub of the take-up reel 2 is pulled out through the slit 5 for forming a tape path formed on the bottom of the cassette adapter 3, the tape guide 6, and the slit 9 formed on the flange 8 of the take-up reel 2. 10, and then the locking pin 11 attached to the end of the magnetic tape T is connected to the take-up reel 2.
A predetermined tape bus similar to a normal tape cassette is formed by engaging with the engagement hole 12 of the tape cassette.

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 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 inserted into the cassette while the front n7 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 adapter 3 or the tape guide 6, or it can be attached to the end of the magnetic tape T by attaching the locking pin 11, which is numbered, to the engagement hole 12 of the winding reel 2.
It was very troublesome to form a predetermined tape bus.

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 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 surface of the reel case 4 were to fluctuate so much that it protruded beyond the bottom surface of the cassette adapter 3, not only would stable tape running within the VTR become impossible, but also the cassette adapter 3 would 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.

Furthermore, when the tape winding operation is performed until the end of the tape due to a failure of the tape end detection sensor of the VTR, a considerable force is applied to the engagement portion between the locking pin 11 and the engagement hole 12.

In such a case, there is a risk that the locking pin 11 may come off from the engagement hole 12, and the locking pin 11 may come out of the cassette adapter and collide with a magnetic head or the like in the VTR. There was a risk that this would be destroyed.

(Means for Solving the Three Problems) The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention 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 state where the take-up reel is stored in advance, and is rotatably attached to the upper half, so that when the upper half and the lower half are assembled, the front of the cassette adapter is 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 bus 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 power pit adapter characterized by having a reel lock □ structure for locking the rotation of the supply reel and take-up reel provided and attached, and an upper half and a lower half connected by a hinge so as to be freely openable. and a cassette adapter in which a supply reel on which a magnetic tape is wound is attached and detached with the upper and lower halves open, and a take-up reel is stored in advance, the supply reel being A supply reel mounting part formed by a circular partition wall along the outer periphery of the supply reel, and a supply reel mounting part that faces the outside when the upper half and the lower half are opened,
a tape guide mechanism that forms a predetermined tape bus 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 an inner side of the partition wall. a guide piece that protrudes from the top and guides the leading end of the magnetic tape from the supply reel Vt attachment part to the tape guide mechanism; The cassette adapter is composed of an upper half and a lower half connected by a hinge so as to be openable and closable, and a take-up reel is stored in advance in these upper and lower halves, and a magnetic tape is wound therein. The supplied reel is attached and detached with the upper half and the lower half open, and a tape stopper provided at the leading end of the magnetic tape fixes the leading end of the magnetic tape to the take-up reel and holds the magnetic tape at a predetermined position. In a cassette adapter that forms a tape bath, when the upper half and the lower half are closed, the tape stopper that has come off the take-up reel is prevented from slipping out from the front of the cassette adapter. The present invention provides a cassette adapter characterized by comprising:

(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.
By closing these upper half 22 and lower half 23 as shown in FIGS. 2 and 3, the tape cassette has the same external shape and shape as a normal tape cassette. It becomes the 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. .2
6. A lid avoidance mechanism 27 is provided.

The supply reel and each of the above mechanisms 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. It is composed of a flange 32 and a lower flange 33, and on the outer peripheral edge of the lower 7 flange 33, an engagement step 34 is formed over the entire circumference, with which a lock claw 81 of a reel lock member 82, which will be described later, is engaged.

Moreover, a notch 35 for fixing Daves 1 to a collar 40, which will be described later, is formed around the entire outer peripheral edge of the upper seven flange 32.

The upper 7 langes 32 are made of, for example, a transparent synthetic resin material, and when attached to the cassette adapter 20, the attached magnetic tape T can be passed through the window 59 formed in the upper half 22. It can be visually checked through.

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 31 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 table 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 shown in FIGS. 5 to 7.
As shown in the figure, the tape holding part 41 and the single-shaped fixed aI
The tape holding part 41 is formed to have approximately the same height as the distance between the upper 7 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. 42a is fitted into the notch 35 of the upper flange 32, the lower surface of the anchor portion 42b that continues to the upper end of the neck portion 42a and the upper surface of the tape holding portion 41 are aligned with the outer peripheral edge of the upper flange 32. It is designed to hold.

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 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, when the Arpus 1 collar 40 as described above is fixed to the upper flange 32, 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 40.

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 holding portion 4 of this tape stopper 40
The outer surface of the take-up reel 10 is formed to have the same curvature as the outer circumferential surface of the reel hub of the take-up reel 70, which will be described later. Since there is no difference in level on the outer circumferential surface of the magnetic tape T, it is possible to prevent the magnetic tape T from being inadvertently scratched once wound.

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 the tape stopper 40 is moved 11f1 from the upper flange 32.

Note that fixation of the tape stopper 40 was performed by forming i'1s42 into a single character shape and connecting the tape holding part 41 and the engaging part 42b of the fixing part 42 with one neck part 42a. As shown in the figure, two neck portions 42a may be formed so as to be engaged with the two notches 35 of the upper flange 32 at the same time.
- The attachment of the collar 40 to the upper flange 32 becomes more secure, and the strength of the tape stopper 40 itself is improved, so durability can be improved.

Further, 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 flange 32, but may be provided only on a portion of the upper flange 32.

[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 lid 50 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 that has formed a predetermined tape path in the cassette adapter 20. is displayed 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 installed.

Note that the 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 the tip is integrally formed on the front end side of the side wall of the upper half 22, and slits 57 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 lower 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 closing the lower half 23, a cassette adapter 20 having the same external shape and dimensions as the normal Dave cassette 1- 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 the opening into which the loading member of the VTR 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.

Roughly speaking, in FIG. 3, 6G 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 useful reel hub 11, a disc-shaped lower flange 72 attached to the lower end of the reel hub 11, and the reel hub 7.
It consists of an upper flange 73 attached to the upper end of 1.

Note that, like the lower flange 33 of the supply reel 30, a retaining step portion 78 is formed on the outer peripheral edge of the lower seven flange 72.

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 is continuous 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 consists of a disk portion 73a that comes into contact with the upper surface of the reel hub 11, 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, when fixing the tape stopper 40 to the part 74, your fingers will fit between the flange pieces 73b, so the upper flange 7
3, and 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 15, the tape stopper 40 can be easily removed. The hub 11 can be easily attached to the section 14.

Further, in this installation, the above-mentioned notch 75 is formed on the outer periphery of the disc part 73a of the upper flange 73 that continues to the part 14, and furthermore, the protrusion of the tape stopper 40 is sandwiched between this notch 75. Engagement recesses 76, 77 are formed to engage relatively with the notches 75, 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 713, 77. Part 43.
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 winding reel 70 is rotated counterclockwise in FIG. 9 to wind up the magnetic tape T with the magnetic tape T fixed as described above, 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 TT can be brought into close contact with the reel hub 11.

Further, the reel tip 71a disposed on the upper surface of the reel hub 71 may be made of, for example, artificial sapphire or 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 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 1-tube 71a may be formed separately as shown in FIG. 11.

As a result, relatively Q lai 'J artificial support 17
, etc. can be used less, 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 10 only when the upper half 22 and the lower half 23 are closed when not in use. The reel lock mechanism 2 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 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 disposed on the lower half 23 include a locking pawl 81 formed at one end, which engages with the engagement step 34.78 of the lower flange 33.72 of each reel 30, 70, and A pair of lock levers 82 whose portions are pivotally supported on 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 urges the second lock claw 81 in a direction (in the direction of the arrow) to engage each of the engagement step portions 3478, 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 separate the release levers 87 from the engagement step portions 34 and 78 of the respective lower flanges 33 and 72, and a direction in which these release levers 87 are unlocked (direction of arrow B)
There is a second spring 88 that biases the upper half 22 and the lower half 23, and 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 and moves in the opposite direction of arrow B. It is designed to be elastically displaced.

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 8), 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 is moved from the lower flange 33.
Each reel 30 is engaged with the engagement steps 34 and 78 of 72, respectively.
．． Lock 70.

Furthermore, when the cassette adapter 20 is attached to the VTR in this state, the operating rod 85 of the VTR presses the release lever 87 and the first This release lever 87 is displaced in the direction of arrow B against the spring 84, whereby the lock pawl 81 of the lock lever 82 is separated from the engagement step 34.78 of each lower flange 33.78. The lock status is released.

On the other hand, when the upper half 22 is opened and the lock release piece 80 is retracted from the pressing part 88a of the second spring 88 when filling the supply reel 30, as shown in FIG. As shown in , the release lever 81 is moved in the direction of arrow B by the second spring 88.
Displaced in the direction.

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.

As described above, according to the reel lock n structure 24 in this embodiment, when the upper two supply reels 30 are attached or detached, the upper half 2
2 and the lower half 23 are opened, the supply reel 30 and 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.

[Tape Guide Mechanism] The Arp guide mechanism guides the magnetic deso-T from the supply reel 30 to the take-up reel 70 via the front surface of the cassette adapter 20 to form a predetermined tape path that loosens. The cassette adapter 20 is provided on both sides of the front surface thereof.

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. 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 guide ball 90 connects the magnetic tape T.
The tape pad 92 that holds the tape pad 92 and this tape pad 92
a bat support 93 that supports the pad support 93;
A spring 94 biases the tape pad 92 away from the guide ball 90 (in the direction of arrow C), and a spring 94 is formed on the upper protrusion 722 to urge the pad support 93 when the upper half 22 is closed. The operating piece 95 rotates and displaces the tape pad 92 to press the guide ball 90.

The pad support 93 has a bearing on its proximal end portion 93a.
is rotatably attached to a sill reflex 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
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, and when the upper half 22 is opened, the tip of the operating member 95 comes into contact with this inclined surface 93b. It looks like this.

Moreover, the inner side q 93c of this pad support body 93 is the 16th
As shown in Figure (A), it is formed so as to intersect obliquely with the tape bus P of the magnetic tape T indicated by the two-dot chain line in the figure, and as will be described later, the inner wall 93c of the magnetic tape The tag tape (1) at the tip of the T is guided in the direction of the tape guide 91.

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 (8).
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 (2) 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 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, as shown in FIG. 17, the tip of the tape pad 92 is connected to the partition wall 6 forming the supply reel attachment g167.
The partition wall 68 slightly protrudes into the inside of the partition wall 68 through the opening part 68a formed in the hole 8, and the partition wall 68 is formed up to the vicinity of the guide ball 90, and its inner surface is flush except for the opening pH 68a. 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 attached to the upper flange 32.
After placing the supply reel 30 on the supply reel attachment part 67 in the attached state or in the detached state, when this supply reel 30 is rotated clockwise in the figure with fingers or the like, this tag tape TT The tip of the partition wall 68
17(A), the tip of the tag tape TT is hooked only by the tip of the tape pad 92, and the tag tape TT slides on the inner surface of the tape pad 92 to reach the opening G8a. It is automatically guided between the guide ball 90 and the guide ball 90.

Furthermore, when the supply reel 3o continues to rotate in this state, the leading end of the tag tape 1 is guided by the inner wall 93C of the pad support 93, and the tip of the tag tape 1 is guided by the tape guide 91 as shown in FIG. 17(B). 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 tape L-flange 40 is attached to the upper 7 flange 32, it is removed from the upper flange 32 by 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 bus passing through the tape guide 91 and the tape guide 91 can be formed, making it extremely easy to attach the magnetic tape (2) 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 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
As shown in FIG. 18(^)(B) and FIG. 19(8)(B), the tape guide 10 is planted in the lower half 23.
0 and a guide []- 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 roller support 105 in the direction of the arrow to separate the guide roller 101 from the tape guide 100; and an upright piece 101 integrally formed with the roller support 105.
and an operating piece In which is formed on the upper half 22 and contacts the upright piece 107 to rotationally displace the roller support 105 in the direction opposite to the arrow mark when the upper half 22 is closed.
It is composed of.

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.
The inclined surface 1.degree. 8a at the tip of the operating piece 108 slides on the tip of the operating piece 108, thereby rotating 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 defined within a boundary between 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 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 biased in the direction of the arrow by the spring 106 as shown in FIG. 19(A). It is separated from 100.

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.

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

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 10G, and the tape stopper 40 that has come off M will not pass between the guide roller 101 and the tape guide 10G. is V
Accidents that may damage the magnetic head or the like in the TR can be reliably prevented.

Further, when the upper half 22 has a mouth, 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. As described above, even if the tape stopper 40 detached from the take-up reel 70 collides violently between the guide roller 101 and the tape guide 10G, it will not pass through the guide roller 101 and the tape guide 10G. can be reliably prevented from occurring.

In this way, the tape guide mechanism 26 in the present embodiment is configured so that the tape stopper 40 that has come off from the take-up reel 70
The tape stopper that has come off from the take-up reel 70 functions as a prevention means, and uses the tape guide 100 and guide roller 101 that make up the tape guide mechanism 26 to prevent the tape stopper from slipping out to the front of the cassette adapter. It is possible to prevent the occurrence of an accident in which the 40 is pulled out into the VTR.

Incidentally, by using another independent mechanism that prevents the tapes 1 to 40 from being pulled out from the cassette adapter 20 with the upper half 22 and lower half 23 opened, accidents such as the above are prevented. Of course it's a good thing.

[Single front cover opening structure] The front cover avoidance mechanism 27 has the front cover opening 55 as shown in FIG.
The cam surface 110 formed on the inner surface of the side wall of 0 and this front lid 5
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 cam surface 110, and the protrusion 111 and the cam surface 110 are brought into at contact with each other as the upper half 22 opens and closes. Therefore, the front lid 50 is slightly opened.

That is, the cam surface 110 is curved so that its lower side is slightly bent as shown in FIG. As shown in figure (B), the front lid 5
Open 0.

As a result, the supply reels 30 and 311 (reel 7
Even if the upper half 22 is opened with the magnetic tape T wound between the cassette adapter 20 and the cassette adapter 20 slightly loosened, the lower end of the front surface of the front M50 will pull the side surface of the magnetic tape T 11. ).

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 side is concave.
After closing the lower half 23, the protrusion 111 is completely separated from the cam surface 110.

This way, you can avoid such a front by 1g! 27 so that the normal opening operation of the front M50 is not hindered.

In this embodiment, an inclined surface 112 is formed on the front lower end surface of the front cover 50, and the inclined surface 112 is inclined from the inside to the outside. It is designed to come off.

As described above, according to the cassette adapter 20 of this embodiment, by providing the front cover avoidance mechanism 27 as described above, the film of the magnetic tape T when closing the upper half 22 is reduced.
1 can be prevented.

[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 zero 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 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 support 93 of the tape guide mechanism on the side of the supply reel 30.
The tape pad 92 in the tape guide mechanism 25 on the supply reel 30 side moves away from the guide ball 90 by retracting from the slope 93a of the tape guide mechanism 26 on the take-up reel 10 side and the slope 107a of the upright piece 107 on the tape guide mechanism 26 on the take-up reel 10 side. At the same time, the above volume is
Guide roller 10 in the tape guide mechanism on the side of the tape guide 10
1 is spaced apart from the tape guide 100.

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

Here, since the lock claw 81 of the O-lock lever 82 in the reel rotor mechanism 24 is retracted from the lock position as described above, the supply reel 30 can be easily placed and stored in the supply reel mounting portion 67. .

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 assembly 6 section 67, and is caught 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. The guide ball 90 is guided by the inside 9193c of the body 93.
and the tape pad 92 and through the tape guide 91 to the front of the cassette adapter 20 .

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 to the take-up reel 10.

Here, when the upper half 22 is opened, the tape guide 100 in the tape guide mechanism 26 is separated from the idle roller 101 by a relatively wide distance, so the tape guide 100 and the guide roller 1 are separated from each other by a relatively wide distance.
01, 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 inserted outside the upper 7 langes 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 on the periphery.

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 mechanisms 25 and 26.

Here, since the O-took claw 81 of the O-took lever 82 in the reel locking 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 performed extremely 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 11 can be attached without the portion 14 etc. being obstructed by the upper 7 flange 73. Also, the tape stopper 40 can be easily fixed to the take-up reel 70.

Furthermore, since the notch 15 with which the neck portion 42a of the Taves 1 hembar 40 engages is formed only on the outer periphery of the upper 7 flange 73 of the take-up reel 70, the neck portion 42a engages with 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 stoppers 2a are formed on the upper and lower sides of the tape stopper 40 and engaged with the upper and lower flanges 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 opened.

Here, since the cassette adapter 20 in this embodiment is equipped with the iyi lid avoidance mechanism 27 as described above, even if the magnetic tape T is loosened to some extent and protrudes to the front, the front M50y'i surface of the magnetic tape T is The magnetic tape T will not be caught and will not be damaged inadvertently.

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 (2) in the cassette adapter 20 and forming a predetermined tape bus.

(Effects of the Invention) As is clear from the above description, according to the present invention, the tape guide mechanism for guiding the magnetic tape to form a predetermined Arp bus is configured such that the tape guide mechanism faces the outside when the upper half and the lower half are opened. In this state, the tape winding operation of winding the magnetic tape around the tape guide mechanism to form an Arp bus can be performed.

Therefore, according to the present invention, there is no need to provide a slit for drawing out the tape in the upper half or lower half as in the conventional case, and there is no need to pass the magnetic tape through these slits. It can be wrapped very easily.

In addition, since the #J lid is attached to the upper half, there is no need to keep the front lid open when winding magnetic tape, which also facilitates tape winding work. be able to.

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 accidentally dropped from the cassette adapter can be reliably prevented.

Further, in the present invention, the inner surface of the partition wall forming the supply reel mounting portion to which the above-mentioned supply reel is mounted is formed with a smooth surface, and a guide piece (tape pad) is provided that projects inside the partition wall. By rotating the attached supply reel, the tip of the magnetic tape that has popped out from the supply reel can be guided to the guide piece by sliding along the inner surface of the partition wall, and the tip of the magnetic tape can be guided to the guide piece above. It can be hooked onto the guide piece and guided to the tape guide mechanism.

As a result, according to the present invention, it is possible to extremely easily form a tape bus for magnetic tape within a cassette adapter.

Furthermore, in the present invention, the prevention means prevents the tape stopper from coming out in front of the cassette adapter even if the tape stopper detaches from the take-up reel during rewinding due to a failure of the tape end detection sensor of the VTR or the like. It can be prevented.

As a result, according to the present invention, it is possible to prevent the occurrence of an accident in which various parts within the VTR are damaged by the detached tape stopper.

[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 fixed together; FIG.
The figure is a perspective view of the supply reel, and Figure 6 is the Vl in Figure 5.
-Vl 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. A perspective view, FIG. 10 is a perspective view of a main part similarly showing the take-up reel, FIG. 11 is a side sectional view showing another example of actual flow of the take-up reel, and FIG. 12 is a perspective view showing a reel lock mechanism. 13th
Figures (A) and (B) are side views of essential parts showing the operating state of the reel lock mechanism, Figures 14 and 15 are perspective views showing the tape guide mechanism on the supply reel side, and Figures 16 (^) (B )
A plan view showing each operating state of the beam-ruroku structure, 1st
Figures 7 (A) to (C) are plan views showing the magnetic tape guiding operation, Figures 18 (A) and (B) are perspective views showing the tape guide mechanism on the take-up reel side, and Figure 19 (^ )(B
) are perspective views showing the operating states of the tape guide mechanism, FIG. 20 is a plan view showing the relationship between the tape guide mechanism and the tape stopper on the take-up reel side, and FIGS.
(C) is a side view showing each 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. qO Figure 5 Figure 6 Figure 8 Figure 12 Figure 10 Figure 3 and 13:gu1'tT 熟( I+o 佽子b-〇 〇冑1 MAI

Claims (3)

[Claims] (1) Consisting of an upper half and a lower half connected by a hinge so that they can be opened and closed, a supply reel wound with magnetic tape is attached and detached with the upper half and lower half open, and the supply reel is unwound. A cassette adapter in which a reel is stored in advance, the front cover being rotatably attached to the upper half and covering the front of the cassette adapter when the upper and lower halves are closed; and the upper and lower halves. When I opened up with my half, I went 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 cassette adapter comprising: a reel locking mechanism for locking the rotation of a supply reel and a take-up reel provided and attached thereto. (2) Consists of an upper half and a lower half connected by a hinge so that they can be opened and closed; the supply reel wound with magnetic tape is attached and detached with the upper half and lower half open, and A cassette adapter in which a reel is stored in advance, in which the supply reel is attached, and a supply reel mounting part formed by a circular partition wall along the outer periphery of the supply reel, and the upper half and the lower half are opened. When I went 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 an inner side of the partition wall. a guide piece that protrudes from the wall and guides the leading edge of the magnetic tape from the supply reel attachment part to the tape guide mechanism, and the inner surface of the partition wall is formed with a smooth surface that prevents the leading edge of the magnetic tape from getting caught. A cassette adapter featuring (3) It consists of an upper half and a lower half connected by a hinge so that they can be opened and closed, and a take-up reel is stored in advance in these upper and lower halves, and a supply reel on which magnetic tape is wound is attached to the upper A cassette that is attached and detached with a half and a lower half configured, and a tape stopper provided at the tip of the magnetic tape fixes the tip of the magnetic tape to the take-up reel to form a predetermined tape path. The adapter is characterized by comprising slip-off prevention means for preventing the tape stopper that has separated from the take-up reel from slipping out from the front surface of the cassette adapter when the upper half and the lower half are configured. cassette adapter.