JPS6037739Y2 - Tape cassette adapter - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tape cassette adapter used, for example, when attaching a tape cassette smaller than a standard type to a standard type video tape recorder, etc. When the small tape cassette is stored, the reel A first flange is formed on the bottom surface of the lower flange of the reel to make it easier to unwind the tape and to prevent damage to the tape.
When the small tape cassette is installed, the reel is braked when not in use due to the engagement between the uneven part and the second uneven part formed on the upper surface of the bottom of the case. An object of the present invention is to provide an adapter for a tape cassette having a structure in which the reel is semi-braked by lifting up against the uneven portions of the second reel and weakening the degree of engagement.

If you want to use a small tape cassette used in a recording/playback machine such as a video tape recorder in a recording/playback machine that is equipped with a larger tape cassette, for example, a standard type tape cassette, you need to use this small tape cassette. You will need an adapter to convert it to a standard type tape cassette.

This adapter may simply serve as a housing if the tape running path of the small tape cassette is configured in the same way as the tape running path of a standard type tape cassette. Any concave case body that fits into the rear and both sides of the tape cassette may be used.

However, tape cassettes whose tape running path is the same as the standard type are smaller than the standard type, but because the tape running path is the same,
It can't be made that small.

Therefore, in order to make a small tape cassette substantially smaller, the tape running path must be different from that of a standard type tape cassette, for example, between the supply reel and take-up reel in the tape cassette. This is not possible unless the distance between is made smaller.

Therefore, when a small tape cassette constructed in this manner is used in a standard type recording/reproducing device, a concave case body that merely serves as a housing for the tape cassette is insufficient as an adapter. .

That is, when a small tape cassette is installed, it must be possible to change the tape path of the small tape cassette using an adapter so that it can be adapted to a standard type recording/reproducing machine.

The present invention has been made in accordance with the above object, and one embodiment of the tape cassette adapter according to the present invention will be described below.

Figure 1 at by C, d is a tape capacity smaller than a standard type cassette used in a recording/playback device such as a standard type video tape recorder, for example, used in a portable type recording/playback device. FIG. 2 is a plan view of the small cassette with the upper half removed, FIG. 3 is a schematic sectional view, and FIGS. 4 and 5. 1 is a parts diagram and a partially enlarged explanatory diagram of a small cassette.

In the figure, A is the entire small cassette, and the frame of this small cassette A consists of an upper half 1, a lower half 2, and an opening/closing lid 3 for protecting the tape. As shown, it is rotatably mounted on a support shaft 4 at the upper part of the front side of the upper half 1.

One end of the sliding piece 7 is held slidably in the groove 5b by being pressed by a substantially U-shaped spring 6 inserted into the groove 5a bored in the side surface of the upper half 1. , opening/closing lid 3
The opening/closing lid 3 is in the closed lid position shown in FIG. 1.

At this time, the lower end of the opening/closing lid 3 is in abutment with the front end of the lower half 2.

From this closed state, the sliding piece 7 slides against the spring 6 by rotating the opening/closing lid moderately clockwise as shown in FIG. 1 by means well known for cassette type VTRs.

When the dead point is exceeded, the second abutting portion 3b and the sliding piece 7
The second abutting portion 3b and one end of the sliding piece 7 abut against each other, and the force of the spring 6 is also applied, and the opening/closing lid 3 rotates further by 90 degrees, so that the second abutting portion 3b and one end of the sliding piece 7 are completely connected. By colliding with
Due to the elastic force of the spring 6, the opening/closing lid 3 is maintained in the open state.

In this open state, as shown in FIG. 13, the open/close lid 3 is positioned higher than the upper end surface of the upper half 1.

The spring 6 is installed and held using the cut groove 5 from above the cassette.
The spring 6 can be easily inserted into the upper half 1 by inserting the spring 6 into the upper half 1, and furthermore, by providing the protrusion 5c on the outer extension of the cut groove 5a, the spring 6 can be easily prevented from coming off once inserted.

Furthermore, by making the kerf 5b a kerf that expands in the depth direction and by making the cross section of the sliding piece 7 into a trapezoid corresponding to the kerf, separation can be easily prevented.

A supply reel 8 and a take-up reel 9 are arranged in this small cassette A, and the distance between the supply reel 8 and take-up reel 9 is such that it cannot be installed with only this small cassette A. The distance is shorter than the distance between the supply side reel disk and the take-up side reel disk of a standard type recording/reproducing device.

The magnetic tape 10 is arranged so that it runs along a predetermined running route between the supply reel 8 and the take-up reel 9.

That is, the magnetic tape 10 is moved from the supply reel 8 to the guide poles 11a, 12a, 11b,
12b, and is then wound onto the winding reel 9.

An annular groove 14 is formed on the lower surface of the lower flange 13 of the supply reel 8, and an annular groove 14 is also formed at a predetermined position on the upper surface of the lower half 2 corresponding to the groove 14 of the lower flange 13. An uneven groove 15 that can engage with the groove 14 is formed, and the leaf spring 1 attached to the upper half 1
6, the supply reel 8 is normally urged toward the lower half 2 side, the uneven grooves 14 and 15 mesh with each other, the supply reel 8 is fixed, and the supply reel 8 is wound around the supply reel 8. Prevents the magnetic tape from loosening.

FIGS. 4a and 4b are a plan view and an explanatory view of the leaf spring 16. By fitting the protrusion of the upper half 1 into the hole 16a in the center of the leaf spring 16 and welding, the leaf spring 16 is assembled into the upper half. Fixed to.

Here, the amount of bending of the leaf spring 16 is such that the amount of bending S on the supply side 16c is larger than the amount t of bending on the winding side 16b.

For this reason, the elastic force against the supply reel 8 is greater than against the take-up reel 9, which helps to regulate the position of the supply reel during recording and playback (and also to stabilize the tape running on the supply side when used in a portable device). This has effects such as being able to reliably brake the supply reel when not in use.

Incidentally, when the small cassette is installed in the recording and reproducing device, this supply side reel 8 is connected to the supply side reel disk 8 of the recording and reproducing device.
0, the half 1 side is lifted by a specified amount against the repulsive force of the leaf spring 16, and the engagement between the uneven grooves 14 and 15 is released.

In other words, the lower half 2 at the position corresponding to the supply reel 8
A hole 17 for inserting a supply reel disk 80 of the recording/reproducing apparatus is formed in the hole 17, and the supply reel disk 80 is inserted into the supply reel 8.

The take-up reel 9 is inserted into a shaft 18 fixed to the lower half 2 and is rotatable about the shaft 18.

The shaft 18 is implanted in the lower half 2 by a screw 19 passing through the center of the recess 2a at the bottom of the lower half 2, as shown in FIG. 1d1 and FIG. 10.

The lower end surface of the screw 19 does not protrude from the lower end surface of the lower half 2, and protrudes from the surface of the recess 2a.

For this reason, as described later, screw 1 is used as a reference for regulating the position when small cassette A is inserted into cassette adapter B.
9 can be used.

In the schematic sectional view of FIG. 3, the recess 2a of the lower half 2 is omitted for the sake of simplification, and the details are as shown in FIG. Teeth 23 are formed on the outer periphery, and cutouts 24 are formed at predetermined locations on the lower half 2 so that, for example, gears can be engaged with the teeth 23.

Furthermore, the lower ends of the gear teeth 23 on the peripheral edge of the lower flange are tapered, as shown in FIG. 9, in order to facilitate engagement with the teeth of the drive gear.

As will be described later, the teeth of the drive gear of the cassette adapter B are similarly tapered at the upper end to facilitate meshing of both teeth.

Then, the take-up reel 9 is rotated by a predetermined driving force transmission mechanism such as a gear that meshes with the teeth 23, and the magnetic tape 10 is rotated.
passes through a predetermined running route from the supply reel 8 and is wound onto the take-up reel 9.

The take-up reel 9 is provided with a small cassette A so that the take-up reel 9 does not rotate when the small cassette A is not installed in the recording/reproducing device.
When it is necessary to feed out the magnetic tape further, a brake mechanism is provided so that the magnetic tape can be fed out easily and with good operability without damaging the magnetic tape.

This brake mechanism is, for example, as shown in FIGS. 2 and 5 (FIG. 5 is a sectional view taken along the line ■-■ in FIG. 2 with the upper half attached). Toll side reel 9
Brake 25 that presses the upper surface of the peripheral edge of the lower flange 22
The brake 25 is inserted into a shaft 26 formed integrally with the lower half 2, and when pressed by the action of a spring 27, the shoe portion 25a of the brake 25 is pressed against the lower flange 22. The take-up reel 9 does not rotate and the magnetic tape does not loosen.

In order to release this braking state and allow the take-up reel 9 to rotate, a pin is inserted through the hole 32 formed in the lower half 2, and the pin is used to connect the other end 25b of the brake 25 to the spring 27. lift against the repulsive force of
By separating the shoe portion 25a of the brake 25 from the upper surface of the peripheral edge of the lower flange 22 of the take-up reel 9, the take-up reel 9 becomes free and can rotate.

With this configuration, both the supply reel and take-up reel are braked when not in use, and the magnetic tape does not loosen inside the small cassette even during transportation, and when used in a recording/playback device, , both brakes are released.

Furthermore, as will be described later, when used with a cassette adapter, by opening the opening/closing lid of the small cassette and pulling out the magnetic tape, the upper surface of the peripheral edge of the lower flange 22 of the take-up reel 9 and the part of the shoe of the brake 25 are removed. 25a slides without damaging the magnetic tape or releasing the brake mechanism, so the magnetic tape can be easily pulled out from the small cassette with good operability.

In addition, the take-up side brake mechanism is assembled integrally with the lower half after the take-up reel 9 is installed on the lower half 2 (or immediately after the lower flange is inserted in the process of installing the take-up reel 9). After inserting the brake 25 into the shaft 26 and inserting the coil spring 27 to surround the shaft 26, the upper half is attached to hold the spring 27, and the assembly is completed and can be easily assembled. .

Note that the upper and lower halves of the small cassette are provided with a recess and a protrusion for latching at the joining end of the upper and lower halves. Temporarily fasten the halves and firmly connect the two with screws.

Furthermore, as clearly shown in Figure 1, c and d, the bottom of the small cassette A has a length 1-. 12
Incorrect, ft ＞/j2 (7) Notch 2e1.21
2 is provided.

The lower end of the opening/closing lid 3 is also provided at the same height as the notch 211, and the top surface of the small cassette has no notch on the front surface but an arcuate notch 113 on the rear surface.
>23.

Therefore, when a small cassette is attached to a recording/playback device,
Only when the small cassette is inserted correctly, the protrusion provided on the cassette housing is inserted into the notch 211, and when inserted incorrectly, the protrusion on the device side is inserted into the notch 2tl of the cassette half.
, 1e3, making it impossible to completely install the small cassette.

6 to 13 are explanatory diagrams of an adapter used when the above-mentioned small cassette A is attached to a standard type recording/reproducing apparatus.

In the figure, B is an adapter that can accommodate the small cassette A inside and has a size and shape that can be attached to a standard type recording/reproducing device.

The frame of this adapter B consists of a lower half 51 and an upper half 52.
A storage section 53 for storing a small cassette A is formed in the lower half 51.

This housing portion 53 has protrusions 54 and 55 for regulating the position of the small cassette A formed at its ends, and a stepped portion 57 extending between the protrusions 54 and 55.

On the other hand, the lower half 2 of the small cassette A has these protrusions 54, 5.
Recesses 2B and 29 are formed corresponding to the position 5,
Further, the screw 19 protruding from the bottom recess 2a of the small cassette A is inserted into the tapered center hole 56a of the annular holder 56, as shown in FIG. collide with.

These convex portions and concave portions are used to position the small cassette A, particularly in the vertical direction.

Further, pins 58 and 59 are implanted in the protrusions 54 and 55, and these pins 58 and 59 are connected to the lower half 2 of the small cassette A.
It is inserted into the holes 32 and 33 formed in the.

The horizontal positioning of the small cassette A in the adapter B is achieved by inserting the screw 19 of the small cassette A into the tapered center hole 56a of the annular holder 56 and attaching it to the pin 58 of the protrusion 54.
This is done by entering the hole 32 of the small cassette A.

The pin 58 serves to release the brake of the take-up reel 9 of the small cassette A.

That is, the positions of the pin 58 and the hole 32 are as shown in FIG. This is the position where the pin 58 lifts.

Reference numerals 101 and 102 are hinges for attaching the upper half 52 and lower half 51 of the adapter B so that they can be opened and closed, and 103 is a hinge that is always applied with a force in the direction of closing the lid by a spring 105 around the support shaft 104. This is the opening/closing lid of the cassette adapter B attached to the half 52.

106 is fixed to the support shaft 104, and the inclined cam surface 1
06a and 106b, when the upper half 52 closes, the protrusion 107 fixed to the lower half 51 comes into contact with the inclined cam surfaces 106b and 106a, etc.
With this operation, the opening/closing M103 is caused to perform an opening/closing operation by a small amount.

When the lid closing operation of the upper half 52 is performed, as shown in FIG.
A claw portion 108 at the tip of the side surface integrally formed with the adapter B locks the upper and lower halves of the adapter B in the closed state by engaging with a notch 109 provided on the side surface of the lower half 51. ing.

This lock can be easily released by pressing the protrusion 110 on the side surface of the upper half 52 inward.

111 is a protrusion 110 integrally molded with the upper half 52, and a cut groove bored on the side surface of the upper half 52 to give elasticity to the claw 108; 112 and 113 are the upper half 52, This is a guide protrusion provided on the side abutting portion of the lower half 51.

When adapter B with small cassette A inserted is attached to a standard type recording/playback machine, the supply side reel disk of the two reel disks of the recording/playback machine is small cassette A.
However, since the take-up reel disk cannot be inserted into the take-up reel 9, the adapter B is inserted at the position corresponding to the position of the take-up reel disk. A gear 60 is attached to the lower half 51, into which a take-up reel disk is inserted and driven.

Also, when storing small cassette A in adapter B,
A gear 61 that meshes with the teeth 23 of the lower flange 22 of the take-up reel 9 of the small cassette A is attached to the lower half 51 so as to mesh with the gear 60.

The gear 61 is a shaft mounted on the tip of a plate 114 that is rotatably held between the annular holder 56 and the bottom surface of the lower half 51, with the center hole 56a of the annular holder 56 as the center. 115, and further includes a shaft 115.
is a take-up side reel disk insertion portion 60 integrated with the gear 60.
a passes through a hole in the protrusion 116a of the annular holder 116 into which the ring holder 116 is fitted, and is fixed to the tip of the sliding lever 117.

The sliding lever 117 is slidable over a predetermined range on a lever 119 that is mounted on the lower half 51 and rotates around a support shaft 118, and the gear 61 is parallel to the bottom surface of the lower half 51. It holds like that.

Because of this configuration, even if the position of the winding side disk is changed between the recording and reproducing devices used, the position of the gear 60 will change according to the device. Since the distance from the take-up side reel 9 to the take-up side reel disk remains unchanged, the gear 61 and lower flange 2
The meshing state between the teeth 23 of No. 2 and the gear 60 will not come off.

Further, since the gear 61 is not pressed in the direction of the gear 60 and the teeth 23 by the spring, the magnetic tape can be wound with a relatively weak torque.

(As a result, this application shows that despite the addition of a take-up reel transmission mechanism and the complication of the magnetic tape running path, it is possible to record and play back on a small cassette using an adapter with a conventional device that uses a standard cassette. The person confirmed.

) As the small cassette A is inserted into the adapter B, in order to easily and securely engage the teeth 23 of the lower reel flange 22 in the small cassette A with the gear 61, as shown in FIG. The tooth portion 61 has a conical shape near the upper end, and the upper end surface of the tooth is formed by both tapers 61a and 61b.

Therefore, the teeth 23 of the lower reel flange 22 work together with the taper formed on the teeth 23 of the lower reel flange 22 to ensure that the teeth 23 of the lower reel flange 22
and the gear 61 can be meshed with each other.

The state of abutment between the brake 25 and the lower flange periphery is at pin 5.
8, the driving force of the recording/reproducing machine is transmitted to the supply reel 8 and take-up reel 9 of the small cassette A, and the magnetic tape begins to run.

That is, even if you try to install small cassette A into a standard type recording/playback machine, the relative positions of the supply side reel and take-up side reel of small cassette A will be the same as the supply side reel disk and the take-up side reel disk of the recording/playback machine. For example, if the supply reel disk is placed on the supply reel, a gear similar to the take-up reel is installed at the position of the take-up reel disk, and this gear and the winding of the small cassette are connected to each other. The driving force of a standard type recording/reproducing machine can be transmitted to the small cassette A by disposing a driving force transmitting means between the reel and the take-side reel.

Furthermore, in general, in VTRs, etc., the rotational unevenness of the supply reel has a worse effect on the recording and reproducing performance than the rotational unevenness of the take-up reel, so in this embodiment, the drive system of the supply side reel is different from the conventional one. Similar to the standard device, the take-up reel drive system has been changed so that the influence of the configuration L1 is small.

Reference numeral 120 designates an accidental erasure prevention lever that is constantly biased with clockwise rotational force by a coil spring 120d around a support shaft 120c installed on the bottom surface of the adapter B, and one end 120a is attached to the back surface of the lower half 51. 6, and is locked in the state shown in FIG.

120b is a detection projection provided on the accidental erasure prevention lever 120, which protrudes into the small cassette storage section, and when the small cassette A is inserted, detects the presence or absence of the accidental erasure prevention claw 2d, and when the claw 2d is present, detects the presence or absence of the accidental erasure prevention claw 2d. , the erroneous erasure prevention lever 120 is rotated counterclockwise from the state shown in FIG.

When a non-recordable small cassette A is inserted into the adapter B, the accidental erasure prevention lever 120 is in the state shown in FIG.

Notch 121.1 drilled in the lower half 51 of adapter B
22, 123, 124 and opening 125° 126.127
, 128, etc. are the same as those of the standard cassette, and are notches for inserting a loading pole, capstan, and lid opening lever, and openings for inserting a light emitting source for tape end detection, a brake release pin, and a positioning pin.

129 is a gear 6 fixed to the upper half 52 at the base.
0 pressing spring, 130 is a transparent plate welded to the upper half 52, and 131 is a notch into which the opening/closing lid is inserted when the small cassette A is opened.

When using the above-mentioned small cassette A by attaching it to a recording/playback device exclusively for small cassettes, such as a portable type recording/playback device, attach a standard type cassette to the standard type recording/playback device. As in the case of use, the small cassette is inserted into the cassette housing 132 of the pop-up mechanism of the recording/reproducing apparatus as shown in FIGS. 14 and 15.

When the small cassette A is inserted in the normal state shown in FIG. 15, the protrusion 133 on the bottom surface of the cassette housing contacts the bottom surface of the cassette when the small cassette A is inserted into the bottom cutout 211 of the small cassette A. Location is restricted.

If the small cassette A is incorrectly inserted, the protrusion 133 will come into contact with the cassette, making further insertion of the cassette impossible.

When the small cassette A is inserted into the cassette housing 132, the upper surface of the small cassette is pressed against the pressing portion of the rotating lever 138, which is biased by a spring 136 to rotate counterclockwise around the support shaft 137 in FIG. 138a, the small cassette A is pressed against the lower surface of the cassette housing 132.

When the pop-up mechanism is moved to the operating position, the front lid of the small cassette A opens and the notches 36 formed in the front and bottom parts of the small cassette A open. - At 37.38, the loading pole 134, capstan 135, etc. of the recording and reproducing device are inserted inside the magnetic tape (as shown in Figure 2), and the supply reel disk of the recording and reproducing device is inserted into the supply reel of the small cassette. The drive force transmission mechanism to the take-up reel, which is similar to the gear in adapter B of the recording/reproducing device, enters the small cassette in conjunction with the movement of the pop-up mechanism from the non-operating position to the operating position. However, the teeth of the lower flange of the take-up reel mesh with each other, and the driving force of the recording/reproducing device is transmitted to the take-up reel as well.

Furthermore, a recess 2 formed in the lower half 2 of the small cassette
The convex portions of the recording and reproducing device are aligned with 8 and 29, and the pins of the recording and reproducing device are inserted into the holes 32 and 33 of the lower half, and the position of the small cassette adapter is regulated by the internal number of the recording and reproducing device. The lock state of the brake on the take-up reel of the small cassette A is released, and the magnetic tape is maintained in a running state.

Then, the magnetic tape is fed out from the small cassette by the loading pole and attached to the rotating magnetic head.
A driving force is transmitted to the take-up reel, the magnetic tape runs along a predetermined running path, and recording and reproduction are performed.

When taking out the small cassette A from the dedicated recording/reproducing device, the cassette housing 132 is raised to the non-operating position by the stop operation and the eject operation, and then the small cassette A is pushed out to the right in FIG. 14 by a spring (not shown). Ru.

Due to this movement of the small cassette A to the right, the second abutting portion 3b of the opened/closed lid (which protrudes from the top surface of the cassette when the lid is opened) is pushed against the pressing portion 13 of the rotating lever 138.
8a, and the rotation lever 138 receives a counterclockwise rotational force, but its rotation is restricted, so the opening/closing lid 3 is closed against the elastic force of the spring 6, and the lid is closed. In this state, the small cassette A can be taken out.

In addition, when using this small cassette A with a standard type recording/playback device, attach the small cassette A to the adapter B, and then attach this adapter B to the recording/playback device in the same way as when using a standard type cassette. Perform recording and playback.

That is, first, with the front lid of the small cassette A opened, a predetermined amount of the magnetic tape 10 is pulled out.

At this time, the brake 25 is in contact with the take-up reel 9, but the slip between the lower reel flange 22 and the brake 25 allows the magnetic tape to be pulled out easily and without damage.

By inserting the protrusion 53a of the adapter housing 53 into the side recess of the small cassette A, erroneous insertion can be prevented, and the small cassette A can be stored in the adapter B housing 53 along the rim 53b in the normal position.

The pulled-out magnetic tape 10 is attached to the guide poles 64 and 65 provided on adapter B, and the magnetic tape is placed on the front surface of adapter B in the same way as the magnetic tape path on the front surface of a standard type cassette. Close the lid so that the top half matches the bottom half.

As mentioned above, the small cassette A is stored in the storage section 53 of the adapter B.
When the small cassette A is stored in
3, the small cassette A is positioned.

Due to the closing operation of the upper half 52 of the adapter B, the opening/closing lid 103 rotatably provided on the upper half 52 comes into contact with the inclined cam surfaces 106a and 106b, and the opening/closing lid 103 is opened once and then closed. Covered.

Therefore, the magnetic tape 10 attached to the guide poles 64 and 65 can be easily attached to the upper half 5 of the adapter B without being damaged or bent by the opening/closing lid of the adapter B.
2 can be closed to the lower half 51.

At this time, the claw portion 108 of the upper half 52 is engaged with the cutout portion 109 of the lower half 51, and is locked in the closed state.

Since the opening/closing lid 3 of the small cassette A is made of a transparent synthetic resin material, when attaching the magnetic tape 10 pulled out from the small cassette 3 to the guide poles 64 and 65 of the adapter B, the position of the magnetic tape can be easily adjusted. can be viewed, thereby preventing erroneous operations.

Since the small cassette A stored in the adapter B is the same as a standard type cassette, it can be used for recording and reproducing by attaching it to a standard type recording and reproducing machine.

In other words, when small cassette A is attached to adapter B,
The gear 61 of the adapter B is connected to the lower flange 2 of the take-up reel 9.
2, the pin 58 of the adapter lifts the brake 25 against the repulsive force of the spring, and the take-up reel 9 is released from the locked state. The driving force of the take-up reel disk is transmitted to the take-up reel 9 via gears 60 and 61.

Conversely, when the small cassette is removed from the adapter, the engagement between the winding reel 9 and the gear 61 is disengaged, and the pin 58 is removed from the small cassette, so the brake 25 is restored by the repulsive force of the spring 27 and the winding is stopped. Toll side reel 9
is in a locked state.

Incidentally, in order to attach the magnetic tape in the small cassette to the guide pole of the adapter, it is of course possible to attach the magnetic tape in the locked state or in the unlocked state using an appropriate pull-out mechanism.

In addition, the gear 61 is designed to have a small degree of freedom in position setting; for example, when a small cassette is attached to or removed from the adapter, the gear 61 is moved, and during attachment, the gear 61 and the gear 60 are wound together. It is also possible to adopt a configuration in which the small cassette can be engaged with the teeth of the lower flange of the take-out reel, and in this case, it becomes convenient to attach and take out the small cassette from the adapter.

Figures 11, 12, and 13 show a cassette that automatically pulls out the magnetic tape from the small cassette A and stores the magnetic tape in the small cassette A, and is an improved version of the adapter B in terms of operability. FIG. 7 is a plan view showing the tape drawer mechanism with the upper plate portion of the upper half of the adapter C removed, and a plan view and a side view showing the opening/closing operation of the opening/closing lid on the front surface of the cassette adapter by opening and closing the operation lid.

Descriptions of parts that are approximately the same as those of the adapter B described above will be omitted.

without pulling out the magnetic tape 10 from the small cassette A.
When inserted into the adapter C, the notch 36 of the small cassette A,
Guide rollers 140 and 141 are inserted into the magnetic tape 38 and inside the magnetic tape 10.

When the upper half of the adapter C is closed and the operation lid 143 provided on the back side is openable and closable with a support shaft 142,
A sliding lever 14 slidably provided by a known method
4 moves to the left in Fig. 12 to the position shown, and the spindle 1
One end of an L-shaped lever 146 provided around 45 is pressed and rotated clockwise to move the connector 146' connected to the other end upward in FIG.

At the tip of the connector 146', there is a support shaft 1 of the opening/closing lid 103.
Since the protrusion 147 provided on 04 is connected, the opening/closing lid 103 is opened by the above operation.

Furthermore, when the operating lever 149 is rotated clockwise from the position shown by the two-dot chain line in FIG. 11 to the position shown by the solid line, the connector 150 moves downward in FIG. The lever 151 is rotated clockwise about the support shaft 152.

This rotation of the rotary lever 151 causes the tenth deng lever 153 to move about the support shaft 154 from the position indicated by the two-dot chain line to the position indicated by the solid line, thereby pulling out the magnetic tape from the small cassette.

Also, due to the above rotation of the operating lever 149, the connector 1
55, the single-shaped lever 156 is rotated clockwise about the support shaft 157, and the lever 158 is moved to the right in FIG.

By moving the lever 158 to the right, the gear 159 is rotated clockwise via a lever 160 provided integrally with the gear 159, and the second
Gear 16 provided integrally with 0-ding lever 162
Rotate 3 clockwise.

Therefore, the 20th deng lever 162 moves from the position indicated by the two-dot chain line to the position indicated by the solid line in FIG. 11, and the magnetic tape 10 is pulled out from the small cassette A.

The positions of the guide rollers 140 and 141 at this time are naturally the same as the guide positions of the standard type cassette.

Furthermore, by the movement of the 20th Zoning Lever 162,
In FIG. 11, the guide pole 141 comes into contact with the opening/closing lid 103 and its movement is restricted, but as described above, the opening/closing lid 103 is opened by opening the operating lid 143, so the above operation is performed. It will not be a hindrance.

Furthermore, as is clear from FIG. 11, opening the operating lid 143 allows the operating lever 149 to be operated.
With the opening/closing lid 103 closed, the first and twentieth-
Deing levers 153 and 162 are never moved.

By operating the operating lever 149 clockwise to the position indicated by the solid line and then closing the operating lid 143, a closing spring (not shown) of the opening/closing lid 103 causes the protrusion 1 to close.
47, the connector 146' and the single-shaped lever 146 are moved in the opposite direction to the above, the opening/closing lid 103 is closed, and the operation lever 149 can be operated. Movement will be locked.

Naturally, the operating lid 143 is connected to the operating lever 149.
It is kept in the closed state by a known click or the like so that it will not be opened by the counterclockwise force of.

Further, as the connector 150 moves downward in FIG. 11 by the above operation, the pivot lever 165, which is rotatably provided around the support shaft 164, is pivoted clockwise to the position indicated by the solid line. let

The tip of the rotating lever 165 is a small cassette) A storage compartment 5
It protrudes into 3 and enters 3 through an arcuate notch 1 bored into the upper surface of the small cassette A stored therein.

Therefore, when the magnetic tape 10 is being pulled out from the small cassette A by the guide rollers 140 and 141, the small cassette A cannot be taken out from the adapter C.

On the other hand, when the guide rollers 140 and 141 attempt to insert the small cassette A into the adapter C in the position indicated by the solid line in FIG. This can prevent accidents such as not being able to record or play back due to incorrect insertion or damage to the magnetic tape.

Adapter C containing the small cassette in the above state is attached to a standard recording/reproducing device, and recording and reproduction are performed in the same manner as in the case of adapter B.

Next, the operation of taking out the small cassette A from the cassette adapter C will be explained.

As in the case of storing the small cassette A, when the operating lid 143 is opened, the opening/closing lid 103 on the front surface of the adapter C opens, and the operating lever 149 can be operated.

By rotating the operating lever 149 counterclockwise from the position shown by the solid line in FIG. Then, the operation opposite to that described above is performed.

When the operating lever 149 is moved counterclockwise, the rotation of the gear 166 is transmitted to the gear 60 by the gear mechanism via the gear 166 provided coaxially with the operating lever 149, and the take-up reel is rotated, thereby producing a small cassette. The magnetic tape pulled out from A is wound into a small cassette A.

A gear 166 is provided in the gear mechanism when the operating lever 149 is rotated clockwise by a known one-way clutch or the like, when the adapter C is attached to the device, etc.
and a mechanism for cutting off the rotational transmission force of the gear 60.

As mentioned above, by configuring an adapter for, for example, a small tape cassette, such an adapter allows the small tape cassette to be installed in a predetermined type of recording/reproducing machine. Since the distance between the supply reel and the take-up reel can be reduced, it is possible to make the device compact.

Then, the tape can be pulled out from the tape cassette made small in this way and used as a tape path in, for example, a standard type recording/reproducing machine. Even if the interval is different from the interval between the supply side reel disk and the take-up side reel disk of the recording/playback machine, for example, there is no need to be able to move and set the take-up side reel disk, and the drive of the record/playback machine The force can be transmitted well to the reel of the tape cassette, and the magnetic tape can be run smoothly.

In addition, for example, since there is no need to make the reel disk on the take-up side movable, the mechanism of the reel disk part is extremely simple, the reel disk is less likely to break down, and the reel drive mechanism is highly durable. Become something.

The gist of the present invention will be explained below.

As described above, the notch 212 is formed on the rear side of the bottom 2A of the lower half 2 of the cassette A.
2 is provided with a crescent-shaped hole 30.

A peripheral edge portion of the lower flange 13 of the supply reel 8 faces the hole 30, and this peripheral edge portion protrudes from the surface of the notch 212.

FIG. 16a shows a state where the cassette A is about to be attached to the adapter B.

As mentioned above, the uneven groove 14 is formed on the lower surface of the supply reel 8, and the uneven groove 15 that engages with the uneven groove 14 is formed on the bottom 2A side. The two uneven grooves 14 and 15 are engaged with each other by the biasing force of the leaf spring 16 shown in the figure, thereby braking the rotation of the reel 8.

Therefore, even if the cassette A is handled when not in use, the reel 8 does not rotate, so the tape 10 does not loosen.

Figure 16 shows the state in which cassette A is attached to adapter B, and cassette A is shown in Figure 6.
When the lower flange 1 is guided by the protrusion 53a and the rim 53b of the storage portion 53 and accommodated in the storage portion 53, the lower flange 1 is inserted into the stepped portion 57.
3 presses the lower flange 13, thereby lifting the lower flange 13 upward, and when the stepped portion 57 comes into contact with the stepped portion 2t)2, the degree of engagement between the grooves 14 and 15 is weakened, and the unevenness is removed. The brake applied to the reel 8 by the groove 15 is loosened, and the tape 10 can be easily drawn out.

The meshing relationship between the two concave and convex portions 414 and 15 is as shown in FIGS.
4b is formed, and when the cassette A is not in use, the edge of the toothed portion 15a of the uneven groove 15 is aligned with the toothed portion 1, as shown in FIG. 17a.
However, when the cassette A is attached to the adapter B, the uneven groove 14 is in contact with the uneven groove 15 in the above-described manner, as shown in FIG. 17. The tapered portion 14b is spaced apart from the toothed portion 15a.

At this time, when a rotational force is applied to the reel 8, the reel 8 is slightly rotated on its horizontal surface, and the tapered portion 14b is rotated by the toothed portion 15.
The tapered portion 14b rides over the edge due to the inertial force between the tapered portion 14b that contacts the edge of the reel 8, and the reel 8 is rotated with a vertical movement with a small fluctuation range.

In this way, the reel 8 can be semi-braked simply by attaching the cassette A to the adapter B, so when pulling out a predetermined amount of tape 10 to the front side of the adapter B, a large tension is applied to the tape 10. Since there is no need to apply the tape 10, damage to the tape 10 can be prevented.In addition, an electric motor is provided in the adapter B, and the electric motor is operated in response to the installation of the cassette A, so that the tape 10 is automatically pulled out. In this case, the driving load is small, which has the advantage that the electric motor can be made compact and the space inside the adapter B can be used effectively.

A cut groove 5 is provided on the opposite side of the stepped portion 57 of the adapter B that presses the protruding peripheral edge portion of the lower flange 13 when the cassette A is installed.
7a is formed, and this cut groove 57a corresponds to the cut groove for preventing incorrect insertion formed in a standard type cassette.

In this embodiment, since the thickness of the bottom of the adapter B is increased, even if this cut groove 57a for preventing incorrect insertion is formed, a stepped portion is not formed at the bottom on the side of the gear 60 in FIG. However, in the case where the thickness of the bottom portion is slightly limited, when the cut radius 57a is formed, a step portion accompanying this will inevitably be formed on the storage portion 53 side.

In this case, the lower flange 13 can be lifted by using the stepped portion, and there is no need to specially provide the stepped portion 57 as in this embodiment.

Furthermore, instead of providing the stepped portion 57 on the adapter B side, it is possible to provide a protrusion or a pin portion to lift the lower flange 13, and by storing the cassette A in the storage portion 53, It goes without saying that one end of the lever can be pressed and the other end can lift the reel 8.

As mentioned above, the tape cassette adapter according to the present invention is smaller than a predetermined type of tape cassette, and the first uneven part formed on the lower surface of the lower flange of the reel that is loosely fitted and the bottom of the case. When installing a small tape cassette whose reel is braked by engagement with a second uneven portion formed on the upper surface into a predetermined type of recording/reproducing machine,
The adapter is used to accommodate the small tape cassette, the adapter has approximately the same external dimensions as the tape cassette of the predetermined type, is provided with a storage section for storing the small tape cassette, and has a storage section for storing the small tape cassette. When the small tape cassette is attached to a proper position of the part facing the reel, it abuts against the reel and pushes up slightly to weaken the degree of engagement between the first uneven part and the second uneven part. Since the reel is configured to have a stepped portion of a predetermined height to bring the reel into a semi-braked state, when a tape cassette is attached to this adapter, the reel will rotate more easily than when not in use. Therefore, the tape can be easily and smoothly fed out from the reel to the front opening side of the drawer adapter, and damage to the tape can be prevented.In addition, if an electric motor is installed to draw out the tape, its drive The load is small, so the electric motor can be made compact, and the space within the adapter can be used effectively.

[Brief explanation of drawings]

1a, by c, d to 5 are explanatory diagrams of a small tape cassette housed in an adapter according to the present invention,
Figures 6 to 13 are explanatory diagrams of an embodiment of the adapter according to the present invention in which a tape cassette is stored, and Figures 14 and 15 are explanatory diagrams when this tape cassette is installed in a dedicated recording and reproducing device. , Figure 18 a, b and Figure 17 at
b is an explanatory diagram of the main parts of the present invention. A... Entire small cassette, B, C... Song cassette adapter, 1.52... Upper half, 113...
Curved e arcuate notch, 2, 51...lower half, 2
A...Bottom, 2at 28929...
Concave portion, 2d... Accidental erasure prevention claw, 211, 212
...Notch, 3... Opening/closing lid, 3a...
....First abutment part, 3b...Second abutment part, 4
．． 104, 118, 120c, 137, 142.145
, 152, 154, 157, 164... support shaft,
5 a, 5 b, 111 = kerf, 5 c, 56
b, 110. 116 a=protrusion, 6・curve・abbreviated U
Shape spring, 7... Sliding piece, 8...
・Supply side reel, 9...Take-up side reel, 10・
...Magnetic tape, 1lat 1lbt 12
at 12bt 64t 65...Guide pole, 13...Lower flange, 14.15.
... uneven groove, 14a, 15a ... tooth part,
14b... Taper portion, 16... Leaf spring, 17... Supply side reel disk insertion hole,
18...A shaft fixed to the lower half, 19...
...Screw, 22...Lower flange, 23...
...teeth, 24, 36.37, 38.109...
・Notch, 25... Brake, 25a...
... part of the brake, 25b... the other end of the brake,
26...A shaft integrally formed in the lower half, 27
... Spring, 32, 33 ... Hole formed in lower half, 53 ... Storage section, 53a.
... Protrusion, 53b ... Rim, 54, 55
...Position regulating protrusion, 56...Annular holding body, 56a...Tapered center hole, 57...
...Stepped portion, 57a... Cut groove, 58.59.
...Pin, 60, 61, 159, 163...
... Gear, 60a ... Winding side reel disk insertion part, 61a. 61b... Taper, 80... Supply side reel disk, 101, 102... Hinge,
103...Opening/closing lid of cassette adapter B, 10
5... Spring, 106, 119, 146,
158, 160... Lever, 106a, 106
b... Inclined cam surface, 107... Protrusion,
108...Claw portion, 112, 113...
Guide projection, 115... shaft, 116...
Annular holder, 117...Sliding lever, 120
・・・・・・Erroneous erasure prevention lever, 120a・・・・・・
One end, 120b...detection protrusion, 120d.
...Coil spring, 121, 122, 123
,124...notch, 125.126,127,
128... Opening hole, 129... Pressing spring, 130... Transparent plate, 131...
...Notch opening, 132...Cassette housing, 133...Protrusion on bottom of cassette housing, 134...Ding pole, 135
... Capstan, 136 ... Spring, 138 ... Rotating lever, 138a ...
... Pressing part, 140.141 ... Guide roller, 143 ... Operation lid, 144 ...
Sliding lever, 146, 156... L-shaped lever, 146', 150, 155... Connector, 147... Protrusion, 149... Operation Lever, 153... 10th deing lever, 1
61... Timing belt, 162...
・No. 20 - Deing lever.

Claims (1)

[Scope of utility model registration request] The first tape cassette is smaller than a predetermined type of tape cassette and is formed on the lower surface of the lower flange of the reel that is loosely stored.
When installing a small tape cassette in which the reel is braked by the engagement between the uneven part of the cassette and the second uneven part formed on the upper surface of the bottom of the case into a recording/reproducing machine of a predetermined type, the small tape cassette is The adapter is used to store a cassette, and has a storage part for storing the small-sized tape cassette, which has approximately the same external dimensions as the tape cassette of the predetermined type, and the adapter has a storage part for storing the small-sized tape cassette, and the adapter has a storage part for storing the small tape cassette, and the adapter has a storage part for storing the small-sized tape cassette. When the small tape cassette is attached to the appropriate position on the opposing part, it abuts against the reel and is pushed up slightly, thereby forming the first uneven part and the second part.
A tape cassette adapter comprising a stepped portion of a predetermined height for reducing the degree of engagement with the uneven portion of the reel and bringing the reel into a semi-braking state.