JPS6021426B2 - tape changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention can be used in devices such as audio tape recorders or video tape recorders that record or reproduce signals using magnetic tape (hereinafter collectively referred to as magnetic tape devices). This is about effective tape replacement and counterfeiting.

Depending on the application, there are two types of magnetic tape devices: large magnetic tape devices that use large tape cassettes with a large amount of magnetic tape for long-time recording or playback, and large magnetic tape devices that are suitable for outdoor portable use. There is a small magnetic tape device that uses a small tape cassette that is conveniently small and lightweight, and has a relatively small amount of magnetic tape winding.

These two magnetic tape devices naturally have different configurations, such as the spacing between reel stands (reel axes), and the tape cassettes used for both have different IJ-le spacing and even external dimensions, making them mutually compatible. It was difficult to give it sex. In view of such points, the present invention has been developed to provide a system in which, when the recording format of the magnetic tape is the same for both a large-sized magnetic tape device and a small-sized magnetic tape device, even if the dimensions and shapes of the tape cassettes used in both devices are different, By exchanging the magnetic tapes stored in the tape cassettes, the same magnetic tape can be applied to any of the above-mentioned magnetic tape devices.

Hereinafter, the present invention will be explained based on drawings showing embodiments.

1 to 3 show a small cassette shell used in an embodiment of the present invention, and this small cassette shell 1 has an upper shell la and a lower shell l made of synthetic resin such as polypropylene.
b together form a box-shape, and as shown in FIG. 3, they are constructed so that they can be divided by rotation about a thin wall portion 2 formed on the back that acts as a hinge and serves as a fulcrum. Further, a lid member 3 is attached to the front portion of the small cassette shell 1 via support shafts 4a and 4b so as to be rotatably openable and closable to the upper shell la. Furthermore, a supply reel 5 and a take-up reel 6 can be housed inside the small cassette shell 1, and the magnetic tape 7 unwound from the supply reel 5 is transferred to the entrance section 8.
Tape guide members (guide pins or guide rollers) 9a, 9b are provided to guide the tape to the take-up reel 6 across the tape a, 8b. Further, the small cassette shell 1 is provided with positioning holes 10a and 10b for positioning the cassette. As shown in FIG. 3, this small cassette shell 1 is divided into an upper shell la and a lower shell lb, and stores a supply V supply reel 5 and a take-up reel 6 on which a magnetic tape 7 is wound. The upper shell la and the lower shell lb are closed and connected using a suitable connecting means such as screws (not shown). On the other hand, the large cassette shell 11 illustrated in FIG. 4 is structured so that it can be divided into an upper shell 11a and a lower shell 11b, like the small cassette shell 1 described above, and has a front part that can be opened and closed by rotation. A lid member 12 is attached.

Further, a connecting reel 5 and a take-up reel 6 can be housed inside the large cassette shell 11, and the magnetic tape 7 fed out from the connecting reel 5 can be stored in the closed portions 13a, 1.
Tape guide members (guide pins or guide rollers) 14a, 14b are provided to guide the tape to the take-up reel 6 across the tape. Further, the large cassette shell 11 is provided with positioning holes 15a and 15b for positioning the cassette. Similar to the small cassette shell 1, this large cassette shell 11 has an upper shell 11a and a lower shell 11b separated, and houses a supply reel 5 on which magnetic tape 7 is wound and a take-up reel 6. After storage, upper shell 1 1a and lower shell 1
ib is closed and connected using suitable connecting means such as screws (not shown). FIG. 5 is a schematic external side view of this device, showing a cassette shell installation stand 16 on which the small cassette shell 1 and large cassette shell 1 can be installed, reel clamp means, reel spacing variable means, etc., which will be described later. The mechanism part 17 is configured to be rotatable around a fulcrum 17a provided on the cassette shell installation base 16.

Next, the mechanism section 17, which is the main part of this device, is shown in Figs.
This will be explained based on FIG.

First, a mechanism for clamping a reel housed in a cassette shell and wound with magnetic tape will be described. FIG. 7 shows the clamping mechanism of the offering reel 5, in which the IJ reel clamp pawls 18a and 18b are rotatably provided around shafts 20a and 20b fixed to lips 19a and 19b provided on the base plate 19. and the reel clamp pawl 1
The flange portion of the supply reel 5 is configured to be clamped by the tension of a tension member 21a stretched between 8a and 18b. Further, a rod 23 is provided so as to be movable up and down within a bearing 22 that is mounted on the base plate 19.
A flange portion 23a is provided at the lower part of the rod 23 so as to be able to press the IJ-lumen tabs 18a, 18b.
Further, the rod 23 is urged upward by a compression spring 24 suspended between the upper end flange portion 23b of the rod 23 and the bearing 22, and its position is regulated by a stopper 25 provided on the rod 23. . 26a is a clamp operation pin, and a boss 27a connects the clamp operation shaft 28.
is fixed.

Next, to explain the clamping mechanism of the take-up reel 6, as shown in FIG. fixed wisteria 3
Reel clamp pawls 18c, centering around 1a, 31b.
18d is rotatably held.

Further, the flange portion of the take-up reel 6 is clamped by the tension of a tension spring 21b stretched between the reel clamp claws 18c and 18d. On the other hand, a rod 33 is provided so that the reel clamp arm 301 can move up and down within a raised bearing 32.
A flange portion 33a is located at the bottom of the reel clamp pawl 18.
c, 18d are provided so as to be pressable. Also rod 3
3 is urged upward by a compression spring 34 suspended between the upper end flange portion 33b of the rod 33 and the bearing 32, and its position is regulated by a stopper 35 provided on the rod 33. 26b is a clamp operation pin, which is fixed to the clamp operation pin 28 by a post 27b.

Similarly, 26c shown in FIG. 6 is also a clamp operation pin,
It is fixed to the clamp operation shaft 28 by a boss 27c. The clamp operation shaft 28 is held by a pair of bearings 36 provided on the base plate 19, and a clamp operation knob 37 is provided at one end. Next, a mechanism for changing the reel interval will be explained.

A lever 39 is provided so as to be movable about a fulcrum 38 which is the same as the support shaft 29 of the reel clamp arm 30 and is provided on the base plate 19. One end of the lever 39 has a hole 39a, which engages with a pin 40 that is held up on the reel clamp arm 30. On the other hand lever 39
A shaft 41 is hammered at the other end, and a cam follower 41a is rotatably provided on the shaft 41. Further, a tension spring 42 is stretched between the base plate 19 and the bar 39, so that the cam follower 41a follows the cam 43. Furthermore, a torsion counter 44 is installed between the reel clamp arm 30 and the base plate 19, and in the state shown in FIG. The left end of the elongated hole 45 provided in the substrate 19 and the bearing 32
Positioning is performed by the contact between the two. In addition, in the state shown in FIG. 9 in which the large cassette shell 11 is installed, the reel clamp arm 3 is biased to the right by the torsion spring 44, and the right end of the outermost hole 45 and the outer periphery of the bearing 32 come into contact. This is how the determination of imitation is carried out. Next, a mechanism for changing the table loop will be explained. The first tape extension arm 46 is attached to the substrate 19
The first tape expansion pin 48 is rotatably supported on a support shaft 47 erected on the shaft, and a first tape expansion pin 48 is provided with a hammer at one end of the support shaft 47 . When the first tape extension arm 46 rotates counterclockwise, it engages with the magnetic tape 7 that cuts the entrance section 8a, and moves the magnetic tape 7 into the exit section 8a. 8a is constructed so that it can be pulled out to the outside of the Karazu-shaped cassette shell 1. On the other hand, a shaft 49 is mounted on the other end of the first tape extension arm 46, and a cam follower 50 is rotatably provided on the shaft 49. Also, the substrate 19 and the first tape extension arm 46
A tension spring 51 is stretched between the cam follower 50 and the cam 52, and urges the cam follower 50 to follow the cam 52. The second tape expansion arm 53 is rotatably supported on a support shaft 54 that is mounted on the base plate 19, and a second tape expansion pin 55 is hammered into one end of the second tape expansion arm 53. The expansion pin 55 can be located in the closing part 8b of the 4-shaped cassette shell 1, and the second tape expansion arm 53 can be rotated clockwise to separate the expansion pin 55 from the first tape expansion pin 48. Similarly, the structure is such that the magnetic tape 7 can be drawn out of the small cassette shell 1 from the opening 8b. On the other hand, the second tape extension arm 53
A shaft 56 is mounted on the other end, and a cam follower 57 is rotatably provided on the shaft 56. Also board 1
A tension spring 58 is stretched between the tape extension arm 9 and the second tape extension arm 53, and urges the cam follower 57 to follow the cam 59. The cam 59 is fixed to one end of a shaft 61 rotatably supported by a bearing 60 provided on the base plate 19, and a sprocket 62a and an operating knob 63 are fixed to the other end. In the same machine, the cam 43 is fixed to one end of a shaft 65 rotatably supported by a bearing 64 provided on the base plate 19, and a sprocket 62b is fixed to the other end. In addition, the cam 52
is fixed to one end of a shaft 67 rotatably supported by a bearing 66 provided on the base plate 19, and a sprocket 62c is fixed to the other end.Furthermore, a chain is connected between the sprockets 62a, 62b, and 62c. 68 is mounted thereon, and the cams 43 and 52 are configured to operate in conjunction with the operation of the operation knob 63. Also, in order to prevent the chain 68 from slackening, a shaft 69 is rotatably supported. A pulley 70 is provided.Next, the continuous operation of the actual mounting will be explained.

First, start from small cassette shell 1 to large cassette shell 1.
1, the mechanical operation for transferring the supply reel 5 and the take-up reel 6 on which the magnetic tape 7 is wound will be explained. First, as shown in FIG. 5, the 4-shaped cassette shell 1 is installed on the cassette shell installation stand 16 with the upper shell la and lower shell lb divided as shown in FIG. The cassette shell mounting stand 16 is provided with a cassette shell positioning pin (not shown), which engages with the positioning holes 10a and 10b of the 4-shaped cassette shell 1 to position the small cassette shell 1. It is configured so that Next, the mechanism section 17 is brought close to the cassette shell installation base 16 until it reaches the state shown by the two-dot chain line in FIG. At this time, the mechanism section 17 is in the state shown in FIG.
a, and the second tape expansion pin 55 is inserted into the entrance part 8.
It has entered b. Here, clamp operation knob 37
By operating the clamp operating pin 26a, the clamp operating pin 26a rotates clockwise in FIG.
presses the rod 23 downward. As the rod 23 moves downward, the reel clamp pawls 18a, 18
b is the shaft 20a. 20b as a fulcrum, and then the rod 23 returns upward, so that the reel clamp pawls 18a, 18b are in the solid line state in FIG. 7, and can clamp the supply reel 5. Similarly, the take-up reel 6 can be clamped by rotating the reel clamp pawls 18c, 18d to the state shown by the two-dot chain line and then to the solid line state, as shown in FIG. Next, by rotating the operating knob 63 by a predetermined angle (6 degrees) in the direction of the arrow 71 shown in FIG. 6, the cam 52 connected to the operating knob 63 by the chain 68 rotates. 1st by movement
The tape extension arm 46 rotates counterclockwise around the support shaft 47 and moves to the state shown by the two-dot chain line in FIG. With this movement, the first tape expansion pin 48 , which is erected at the tip of the first tape expansion arm 46 , moves into the opening 8 .
a and engages with the magnetic tape 7 that crosses the magnetic tape 7.
・By pulling out the shaped cassette shell 1,
The magnetic tape 7 is separated from the tape guide member 9a. Similarly, a cam 59 provided on the same axis as the operation knob 63 also works, and the second tape extension arm 53 is spread clockwise around the support shaft 54 by the spreading of the cam 59, and the sixth
Move to the state shown by the two-dot chain line in the figure. With this movement, the second tape expansion pin 55, which is erected at the tip of the second tape expansion arm 53, engages with the magnetic tape 7 crossing the opening 8b, thereby moving the magnetic tape 7 out of the cassette shell 1. By pulling it out in the opposite direction, the magnetic tape 7 is separated from the tape guide member 9b. As described above, the supply reel 5 is clamped by the reel clamp pawls 18a and 18b, the take-up reel 6 is clamped by the reel clamp pawls 18c and 18d, and the first tape extension arm 46 is The second tape extension arm 53 is rotated to the position indicated by the double-dot wire in FIG. 6, and the mechanism section 17 is rotated about the fulcrum 17a to the position shown by the solid line in FIG. As a result, the supply reel 5 and the take-up reel 6 on which the magnetic tape 7 is wound can be taken out from the small cassette shell 1 installed on the cassette shell installation stand 16. In this state, by further rotating the operating knob 63 by a predetermined angle (60o) in the direction of the arrow 71 in FIG.
A cam 43 connected to the lever rotates, and the cam 43 rotates the lever 39 clockwise around the three-point point 38. The rotation of the lever 39 presses the pin 40 that is engaged with the elongated hole 39a provided at the end of the lever 39.
Reel clamp arm 30 that stands over this pin 40
is rotated clockwise to the state shown in FIG. 9, and the distance between the take-up reel 6 and the supply reel 5 is widened. At the same time, the cam 52 is connected to the operating knob 63 by a chain 68.
The rotation of the cam 52 causes the first tape expansion arm 46 to extend counterclockwise around the spinal cord 47 and move to the state shown by the two-dot chain line in FIG. At this time, the magnetic tape 7 is further expanded by the first tape expansion pin 48. Similarly, a cam 59 provided coaxially with the operating knob 63 also rotates, and the rotation of the cam 59 causes the second tape extension arm 53 to rotate clockwise about the support shaft 54, as shown in FIG. Move to the state shown by the two-dot chain line.
At this time, the magnetic tape 7 is further expanded by the second tape expansion pin 55. As described above, when the magnetic tape 7 is in the state shown by the two-dot chain line in FIG. The lower shell 11b is installed on the cassette shell installation stand 16 in a divided state. Note that the cassette shell installation base 16 is provided with a cassette shell positioning pin (not shown), and the positioning hole 15a of the large cassette shell 11,
The large cassette shell 11 is positioned by engaging with the large cassette shell 15b. Next, the mechanism section 17 is rotated clockwise about the fulcrum 17a to approach the cassette shell installation base 16 to the state shown by the two-dot chain line in FIG. Thereafter, by rotating the operation knob 63 by a predetermined angle (60o) in the direction of the arrow 71, the cam 52 connected to the operation knob 63 by the chain 68 rotates, and the rotation of the cam 52 causes the first tape The arm 46 rotates clockwise about the support shaft 47 and moves to the state shown by the solid line in FIG. With this movement, the first tape expansion pin 48 erected at the tip of the first tape expansion arm 46 is housed in the entrance portion 13a of the large cassette shell 11. Similarly, a cam 59 provided coaxially with the operating knob 63 also rotates, and the rotation of the cam 59 causes the second tape expansion arm 53 to rotate counterclockwise about the support shaft 54. It moves to the state shown by the solid line in FIG. As a result of this movement, the second tape expansion pin 55 held at the tip of the second tape expansion arm 53 is housed in the entrance portion 13b of the large cassette shell 11. At this time, slack occurs in the magnetic tape 7 that has been pulled out, but the tape reel 5 is rotated counterclockwise by a tape winding mechanism (not shown), and the slack magnetic tape 7 is transferred to the supply reel. It is configured to wrap around 5. magnetic tape 7
By winding up the magnetic tape 7, the magnetic tape 7 comes into contact with the tape guide members 14a, 14b of the large cassette shell 11, and a predetermined table loop can be formed. By operating the clamp operation knob 37, the reel clamp pawls 18a to 18d are separated from the flange portions of the feeding reel 5 and the take-up reel 6, and in this state, the mechanism section 17 is moved away from the solid line in FIG. The large cassette shell 11 on the cassette shell setting pupil stand 16 can be taken out by rotating the cassette shell 11 to the position shown by . After the supply reel 5 and take-up reel 6 on which the magnetic tape 7 is wound are stored in the large cassette shell 11, the upper shell 11a and the lower shell 11b are fastened with screws (not shown) or other appropriate screws. Transfer of the magnetic tape 7 from the small cassette shell 1 to the large cassette shell 11 is completed by the coupling means. On the other hand, the supply V carrying the magnetic tape 7 from the large cassette shell 11 to the small cassette shell 1
The operation for transferring the supply reel 5 and take-up reel 6 is similar to the above-described operation, and can be performed by further turning the operating knob 63 in the direction of the arrow 71.

In addition, in FIGS. 6 and 9, the small cassette shell 1 and the large cassette shell 11 are respectively connected to the lower shell l.
b and 11b are shown, and in reality, lower shells lb and 11b are connected with upper shells la and 11a.

As is clear from the above description, the tape exchanger of the present invention can be stored in the first cassette shell and the second cassette shell [small cassette shell 1 and large cassette shell 11] having different reel intervals. A reel clamp means is provided to clamp a pair of reels (supply V supply reel 5 and take-up reel 6) on which magnetic tape is wound and take them out of the cassette shell.
reel clamp claws 18a to 18d], and a lever for changing the reel interval with the pair of reels separated from the first cassette shell by picking up the pair of reels from inside the first cassette shell by the reel clamp means. A pair of reels with a changed reel interval are mounted in the second cassette shell by the reel interval variable means (reel clamp arm 30, etc.), and a pair of reels with a changed reel interval are mounted by the reel interval variable means, It is configured to transfer a pair of reels from the first cassette shell to the second cassette shell by releasing the clamp, and by using two types of cassette shells with different reel spacing, two reel drive The present invention can be applied to two types of magnetic tapes having different center distances without any loss of compatibility.

Furthermore, the tape changing device of the present invention eliminates the need to directly touch the reel or magnetic tape when loading or unloading the magnetic tape into the cassette shell, which is extremely beneficial in preventing staining or damage to the magnetic tape. be. Furthermore, this device is constructed so that all operations are performed manually, does not require a power source, and has excellent features such as being able to be used in any location.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIG. 1 is a plan view of an example of a small cassette shell that is effective in combination with the present invention, FIG. 2 is a right side view of the same small cassette shell, and FIG. 4 is a side view of a small cassette shell in a divided state, FIG. 4 is a partially cutaway plan view of an example of a large cassette shell that is effective in combination with the present invention, and FIG. 5 is a side view of an embodiment of the device of the present invention. A schematic external side view, FIG. 6 is a plan view when a small cassette shell is installed in the device of the present invention, FIG. 7 is a sectional view taken along line A-A in FIG. 6, and FIG. 8 is a cross-sectional view taken along line B-B in FIG. 6.
The sectional view and FIG. 9 are plan views when a large cassette shell is installed in the present invention. 1... Small cassette shell, 5... Supply reel, 6... Take-up reel, 7... Magnetic tape, 8a, 8b... Opening, 10a, lob
...Positioning hole, 11...Large cassette shell, 13a, 13b...Sekiguchi part, 15a, 15b...Image setting hole, 16...Cassette shell installation stand, 17...
... Mechanical tread section, 18a to 18d... Reel clamp pawl, 19... Board, 30... Reel clamp arm, 46... First tape extension arm, 48...First tape expansion pin, 53...
...Second tape extension arm, 55...Second tape extension pin. Figure 1 Figure 2 Figure 5 Figure 7 Figure 3 Figure 4 Figure 8 Figure 6 Figure 9

Claims (1)

[Claims] 1. Reel clamping means that can be stored in a first cassette shell and a second cassette shell having different reel intervals, and is provided to clamp a pair of tape-wrapped reels and take them out of the cassette; reel spacing variable means for picking up the pair of reels from within the first cassette shell by a reel clamping means and changing the reel spacing in a state in which the pair of reels are taken out from the first cassette shell; The pair of reels whose reel spacing has been changed by the reel spacing variable means are mounted in the second cassette shell, the pair of reels are unclamped by the reel clamping means, and the reels are removed from the first cassette shell. A tape changing device characterized in that it is configured to transfer the pair of reels to the second cassette shell.