JPH0590624U - Tension regulator - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a tension regulator capable of reducing the biasing force to the tension post in the fast-forwarding or rewinding state to reduce the driving force required to transfer the magnetic tape. [Structure] In the first transfer state during REC / PLAY, the sub-arm 2 is kept in contact with the stopper 4a by the urging force of the toggle spring 3 as shown in FIG. F ・ F
At the time of the second transfer state at the time of REW,
As shown in (B), in the sub-arm 2, the biasing force of the toggle spring 3 acts in the clockwise direction, and the tension arm 1 rotates in the clockwise direction. In this state, the belt 61 is held in a state where the brake does not act. So FF,
Alternatively, when REW is executed, the brake does not act as described above, and the winding angle θ of the tension arm 1 around the tension post 1b becomes smaller, so that the transfer load of the tape 51 is reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tension regulator, and more particularly, to a tension regulator that controls tension when a belt-shaped recording medium is transferred in a belt-shaped recording medium transfer device used in a recording / reproducing apparatus.

[0002]

[Prior Art]

 As a recording / reproducing apparatus using a magnetic recording tape as a band-shaped recording medium, a stationary type or a portable type is used in each field. In particular, with regard to a video tape recorder with a built-in camera, which is a portable recording / reproducing device using a battery power source, in recent years, there has been a demand for a compact and lightweight device capable of high-speed processing. In order to increase the speed, first, it is conceivable to increase the speed of fast-forwarding and rewinding the magnetic tape, which is a belt-shaped recording medium. In addition, in order to reduce the size and weight, it is possible to reduce the load resistance at the time of fast-forwarding and rewinding and reduce the size of the drive motor and battery. By the way, as a conventional transfer mechanism of the magnetic tape of the recording / reproducing apparatus, a general transfer mechanism having a structure as shown in FIG. 6 has been used.

The transfer mechanism is arranged in the chassis 50, and the magnetic recording tape 51 supplied from the supply reel 52 is passed through tension posts provided in respective predetermined portions to record / reproduce heads. A predetermined lead angle is wound around the rotary drum 54 in which Further, after that, it is configured to be wound by a take-up reel 53 via a capstan 57, a pinch roller 58 and the like. As the tension posts, as shown in FIG. 6, 56a, 56b, 56c, 56d, 56e, etc. are arranged. Further, a tension regulator mechanism for adjusting the tension of the tape 51 at the time of recording and reproducing, that is, a so-called back tension, is disposed on the supply reel 52 side.

In the tension regulator mechanism described above, as shown in FIG. 6, a tension post 55b is supported by a tension arm 55 that is pivotally supported by a support shaft 55a on the chassis 50, and the tension post 55b has a magnetic field. The tape 51 is wound. Further, a tension spring 59 that urges counterclockwise is suspended on the tension arm 55, and one end 61b of a tension regulator belt 61 is supported. The belt 61 is arranged at a position where it can be wound around the outer circumference of the brake plate 60 which is in sliding contact with the reel 52 through a slip mechanism portion 52c as shown in FIG. 7 which is a sectional view around the supply reel 52. The other end 61a of the belt 61 is fixed to the chassis 50.

A capstan motor (not shown) that drives the capstan 57 also drives the supply reel 52 or the take-up reel 53, and the drive system is selected by a gear switching mechanism (see FIG. (Not shown). The transfer state of the transfer mechanism is as follows: during recording / reproducing operation, so-called REC / PLAY operation, a tension regulator is actuated to transfer back tension at a constant speed while maintaining a constant back tension. The tape 51 is quickly supplied to the reel 51 during the rewinding operation, the so-called REW operation, and the tape 51 being quickly wound up by the take-up reel 53 during the fast-forwarding operation, the so-called F / F operation. There is a state of rewinding to the side of the le 52.

A tape transfer operation in the magnetic recording tape transfer mechanism of the conventional magnetic recording apparatus configured as described above will be described. First, in the REC / PLAY state, the transfer state of the tape 51 is shown in FIG. (A), the tension arm 55 is rotated counterclockwise by the urging force of the tension spring 59, and the tension regulator belt 61 is held in a state of being wound around the brake plate 60. In this state, the supply reel 52 is driven with the brake applied. The tape 51 is guided by the post 56a and the tension post 55b and is supplied to the rotary drum 54 side. The speed of the tape 51 is set to a constant speed by the capstan 57, and is taken up by the take-up reel 53. .. The tension of the tape 51 at that time is automatically adjusted to a predetermined value range by the tension regulator via the tension post 55b.

That is, although the tension changes due to a change in the winding diameter of the supply reel 52, when the tension increases, the tension arm 55 rotates slightly counterclockwise against the tension spring 59. By this operation, the winding force of the belt 61 around the brake plate 60 is reduced, the rotational load of the supply reel 52 is reduced, and the tension of the tape 51 is lowered. On the contrary, when the tension becomes small, the tension arm 55 slightly rotates counterclockwise due to the decrease in the tension. By this operation, the winding force of the belt 61 around the brake plate 60 is increased, the rotation load of the supply reel 52 is increased, and the tension of the tape 51 is increased. In this way, the tension adjustment is executed. The urging force of the tension spring 59 at this time is about 3 to 4 g.

Next, in the transfer in the F / F operation, the tape 51 is wound up at a high speed by the winding reel 53 in the same state as the transfer state at the time of recording / reproducing otherwise. At this time, the tension regulator belt 61 remains wound around the break plate 60 as shown in FIG. 8 (A).

Further, in the transfer in the REW operation, the tape 51 is rewound by the supply reel 52. At the time of rewinding, the biasing force of the tension spring 59 becomes about 20 g due to the transfer resistance of the tape 51. Then, the tension arm 55 is rotated clockwise as shown in FIG. 8B. The rotation causes the belt 61 to be loosened so that it is not pressed against the brake plate 60. Then, the supply reel 52 is held in a state where the brake does not act.

[0010]

[Problems to be solved by the device]

 However, in the tension regulator mechanism of the conventional magnetic recording tape transport mechanism described above, the tension regulator belt 61 is wound around the brake plate 60 as shown in FIG. 8A in the F / F operating state. As it is, the braking force fb is added as a force for transferring the tape 51 in addition to the transfer resistance fp. Therefore, an unnecessary load remains in the driving capstan motor, which is disadvantageous in terms of speeding up and power consumption. Further, in the RW operation state, the belt 61 is in a free state and the braking force fb disappears, but since the clockwise rotation angle of the tension arm 55 cannot be increased, the belt is wound around the tension post 55b. The angle θ (see FIG. 8) was not reduced, and the rotation load of the supply reel 52 might be increased.

The present invention has been made in order to solve the above-mentioned problems, and the biasing force acting on the tension arm of the tension regulator is changed according to the transfer state of the belt-shaped recording medium. It is an object of the present invention to provide a tension regulator capable of reducing the motor load for fast-forwarding or rewinding the state and increasing the speed.

[0012]

[Means for Solving the Problems]

 The tension regulator of the present invention is provided so as to be rotatable around a support shaft, and is in contact with the applied band-shaped recording medium by a tension post provided in a predetermined portion of the tension regulator in a direction intersecting the transfer direction. In a tension regulator having a tension arm adapted to apply a bias to the belt-shaped recording medium by exerting a biasing force, the biasing force generated by the same elastic member as the source of the biasing force is the belt-shaped recording medium. In the second transport state in which the same band-shaped recording medium is transported for fast-forwarding or rewinding than in the first transport state in which it is transported for recording or reproduction. It is characterized in that a transmission mechanism for transmitting a biasing force from the elastic member to the tension post is provided so as to be small.

[0013]

[Action]

 When the band-shaped recording medium is fast-forwarded or rewound, the driving force required to transfer the band-shaped recording medium is reduced by reducing the biasing force to the tension post and increasing the rotation angle of the tension arm. To do.

[0014]

【Example】

 The present invention will be described below based on the illustrated embodiments. FIG. 1 shows a first embodiment of the present invention and is a plan view showing an operating state of a tension regulator unit incorporated in a transfer mechanism of a magnetic recording tape which is a band-shaped recording medium. FIG. 1A shows a state during the REC / PLAY operation of the recording / reproducing operation, and shows an operating state in the first transfer state in which the magnetic tape 51 is fed with a predetermined back tension. .. Further, FIG. 1B shows a state at the time of F / F operation of fast-forwarding the tape or at the time of REW operation of rewinding the tape, in the second transport state for fast-forwarding or rewinding the tape 51. Shows the operating state of. The other transfer mechanism section of this apparatus has the same structure as the mechanism section described in FIG.

As shown in FIGS. 1 (A) and 1 (B), the tension regulator mechanism portion is provided with a tension arm 1 pivotally supported by a support shaft 1a fixed to a chassis (not shown), and a tip of the tension arm 1. Section, a tension post 1b, a sub arm 2 whose one end 2a is rotatably supported at the intermediate portion of the tension arm 1 and whose other end 2b is supported by a toggle spring 3 which will be described later, and one end. The chassis, the other end is locked to the sub arm 2 and the center of the coil portion of the spring is the elastic spring toggle spring 3 whose center is substantially at the support shaft 1a position, and a tension spring for biasing the tension arm 1 counterclockwise. 5, a tension regulator belt 61 whose one end 61b is supported by the tension arm 1 and the other end 61a is supported by the chassis, and the belt 61 is wound. A brake plate 60 that can be tightly attached, a stopper that is fixed to the main chassis and that abuts when the sub arm 2 rotates counterclockwise, and a stopper that is fixed to the sub chassis. The sub arm 2 is constituted by a stopper 4b that abuts when the sub arm 2 rotates clockwise. The sub-arm 2 and the toggle spring 3 are members that serve as a transmission mechanism that transmits the biasing force to the tension post 1b.

The brake plate 60 is connected to the supply mechanism 52 (see FIG. 6) and the slip mechanism 52c (see FIG. 7) as in the transfer mechanism portion of FIG. Therefore, the rotational load of the supply reel 52 can be adjusted by the tension regulator belt 61.

In the first transfer state during the REC / PLAY operation, as shown in FIG. 1A, the urging force F1 of the toggle spring 3 acts counterclockwise on the sub arm 2 to cause the stopper 4a to move. Is kept in contact with. At that time, the tension arm 1 is in a position rotated counterclockwise by the biasing force of the tension spring 5. Then, the belt 61 is wound around the brake plate 60 and receives the tension corresponding to the turning position of the tension arm 1. Therefore, when the back tension of the tape 51 changes, the braking force of the brake plate 60 increases or decreases corresponding to the change, and the back tension is adjusted.

On the other hand, in the second transfer state at the time of F / F or REW, as shown in FIG. 1B, the sub-arm 2 has the urging force F2 of the toggle spring 3 acting clockwise, It is in a state of contacting the stopper 4b. The biasing force F2 acts so as to reduce the biasing force of the tension spring 5 that tends to bias the tension post 1b counterclockwise. Therefore, when tension acts on the tape 51 in this state, the tension arm 1 can be rotated more clockwise. Further, in this state, the belt 61 is separated from the brake plate 60 and is held in a free state, so that the braking force does not act on the supply reel 52.

The operation of switching the tension regulator mechanism to each of the above states will be described. First, from the second state shown in FIG. 1B to the first transfer state shown in FIG. The switching is performed by utilizing the movement of the pinch rod of the loading mechanism that operates at the time of switching between the operation mode such as REC / PLAY, FF, REW operation state and the stop mode for stopping the operation. That is, FIG. 2 is a diagram showing the operating state of the loading mechanism. In order to bring the pinch roller 58 into contact with the capstan 57 via the tape 51 when switching to the REC / PLAY operation mode or the like. Then, the loading motor 10 moves the pinch rod 11 in the H1 direction to rotate the pinch arm A13 pivotally supported by the chassis in the H2 direction. Then, the pinch arm B14 is rotated against the spring 15 to move the pinch roller 58 in the H3 direction and abut on the capstan 57. It should be noted that the above state is maintained even during the FF or RW operation.

Therefore, in order to stop the operation of the REC / PLAY, FF, REC, etc., the loading motor 10 is reversed and the pinch rod 11 is moved in the H4 direction. Then, the pinch arm 14 is rotated to separate the pinch roller 58 from the capstan 57. At this time, if the tension arm 1 is in the F / F or second transfer state position (1B) during the REW operation, the arm operation lever 12 presses the protrusion 1c of the tension arm 1 to cause the tension arm 1 to move. 1 is rotated counterclockwise, and switching is performed so as to be located at the first transfer state position (1A) during the REC / PLAY operation. At this time, since the pinch roller 58 is separated from the capstan 57, it is not necessary to operate the tension arm 1 to rotate the tension arm 1 such that the tape 51 is loosened by another operation. Note that the conventional tension regulator mechanism requires this tape loosening operation.

Regarding the switching operation of the tension regulator mechanism from the first state shown in FIG. 1 (A) to the second transfer state shown in FIG. 1 (B), first, switching to the F / F operation is performed. Then, a soft brake member 6 separately provided for preventing tape slack is temporarily applied to the supply reel 52 to increase the tension of the tape 51. Then, the tension arm 1 is rotated clockwise by the tension. At this time, the toggle spring 3 applies the urging force of F2 shown in FIG. 1B to the sub-arm 2, and the sub-arm 2 also rotates clockwise and comes into contact with the stopper 4b, and the switching is executed. ..

On the other hand, in the switching operation to the second transfer state, when switching to the REW operation, when the rewinding state by the supply reel 52 is reached, the REW operation is performed rather than the back tension during the REC / PLAY operation. The tension of time becomes considerably larger. Due to the difference in tension, the tension arm 1 automatically rotates clockwise and the tension arm 1 is positioned in the state shown in FIG. 1 (B). At this time, the urging force F2 is applied to the sub arm 2 by the toggle spring 3 as in the case of switching to the F / F operation, and the sub arm 2 also rotates clockwise and comes into contact with the stopper 4b.

Next, the interference state between the sub arm 2 and the stopper 4a at the time of unloading will be described. The stopper 4a is fixed to the main chassis side, and the stopper 4b is a sub chassis that moves during loading. Is stuck to. Then, during unloading, the tension arm 1 rotates largely clockwise, but the sub arm 2 pivotally supported by the tension arm 1 moves downward together with the sub chassis and does not interfere with the stopper 4a.

Next, the operation of the tension regulator of the present embodiment configured as described above during tape transfer will be described. First, during the REC / PLAY operation, the tension arm 1 is held in the first transfer state shown in FIG. 1 (A). Then, the angle of the tension arm 1 biased by the tension spring 5 and the like changes according to the tension of the tape 51. According to the change angle, the tension of the tension regulator belt 61 changes contrary to the increase and decrease of the tension, and the back tension is suppressed to a value within a predetermined range.

During the F / F operation, the tension arm 1 is held in the second transfer state shown in FIG. 2B. In this state, the tension arm 1 is biased clockwise by the clockwise biasing force of the toggle spring 3 via the sub arm 2 as described above. Therefore, the tension regulator belt 61 is in a loose state. In this state, unlike the prior art example, the brake is not applied to the supply reel 52, and the load during the F / F operation of the winding capstan motor is reduced, and high-speed feeding is possible.

Further, during the REW operation, the tension arm 1 is held in a clockwise biased state in the second transfer state shown in FIG. 1B as the tension acting on the tape 51 increases. Has been done. In this state, the supply reel 52 is also not braked. Further, as described above, the tension arm 1 is held in a state of being rotated by a large amount in the clockwise direction as compared with the conventional example. Therefore, the angle θ of the tape 51 wound around the tension post 1b becomes small, the tension of the tape at the time of rewinding can be reduced, and the load during the REW operation of the capstan motor can be lightened. Also, high-speed rewinding is possible.

As described above, according to the tension regulator of the present embodiment, the load of winding and rewinding the tape 51 during the F / F operation and the REW operation can be reduced as compared with the conventional load. .. Therefore, high-speed winding and rewinding can be realized, and further, the capstan motor and eventually the recording / reproducing apparatus can be made compact and lightweight. In addition, in a device using a battery power source, it is possible to suppress the power consumption and extend the life of the battery. Further, even if the tape transfer state during the F / F operation and the REW operation is changed in this way, it is not necessary to increase the setting mode again, and the recording / reproducing apparatus to which this mechanism is applied becomes easy to use. In the above embodiment, the tension spring 5 may be removed and the toggle spring 3 alone may be used for both tension adjustment and transfer adjustment.

Next, a tension regulator mechanism according to a second embodiment of the present invention will be described with reference to FIGS. 3A and 3B showing the operating state of the mechanism. This tension regulator mechanism is also a mechanism incorporated in the magnetic recording tape transport mechanism. FIG. 3A shows the operating state during the REC / PLAY operation, which is the recording / reproducing operation. The operation state in the first transfer state of feeding while applying a predetermined tension is shown. Further, FIG. 3B shows an operation state in the second transfer state in which the tape 51 is rewound during the REW operation of rewinding. The other transfer mechanism part of this apparatus has the same structure as the mechanism part described in FIG. 6 as in the first embodiment.

As shown in FIGS. 3A and 3B, the tension regulator mechanism section includes a tension arm 21 pivotally supported by a support shaft 21 a fixed to a chassis (not shown), and a tip of the tension arm 21. Is an elastic member whose one end is supported by the intermediate portion of the tension arm 21 and the other end of which is supported by a sub-chassis (not shown). A tension regulator belt 61, one end 61b of which is supported by the tension arm 21 and the other end 61a of which is supported by the chassis, a brake plate 60 around which the belt 61 can be wound, and a main chassis. And a stopper 23 that abuts when the tension arm 21 rotates clockwise. Composed.

In the first transfer state at the time of REC / PLAY of the present mechanism, the tension arm 21 is acted counterclockwise by the urging force F3 of the toggle spring 22 as shown in FIG. 3 (A). .. At this time, if the distance between the support shaft 21a and the line of action of the urging force F3 is d2, the counterclockwise biasing force of the tension arm 21 is represented by F3.times.d2. The rotation of the tension arm 21 causes the belt 61 to be pressed into contact with the brake plate 60 and wound into a wound state, and the tension corresponding to the rotational position of the tension arm 1 is applied, so that the tape 51 of the tape 51 is supplied to the supply reel 52. Braking force is applied to adjust the back tension.

On the other hand, in the second transfer state during REW, as shown in FIG. 3B, the tension arm 21 is acted on by the biasing force F4 of the toggle spring 22 as shown. However, since the distance between the support shaft 21a and the line of action of the urging force F4 is extremely small, the rotational moment for biasing the tension arm 21 counterclockwise is almost zero. Become. In this way, the rotational moment that tends to bias the tension arm 21 in the counterclockwise direction is greatly reduced, and the tension arm 21 can be largely rotated clockwise by the tension of the tape 51. Therefore, in the state where the tension of the tape 51 is applied during the REW operation, the tension arm 21 can be held by contacting the stopper 23 located on the right side. That is, the tension arm 21 can be biased to a larger clockwise position. Therefore, the belt 61 is separated from the brake plate 60, the brake of the supply reel 52 is kept inoperative, and at the same time, the angle θ wound around the tension post 21b on the tension arm 21 becomes small.

The tension regulator mechanism is automatically switched from the second state shown in FIG. 3B to the first transfer state shown in FIG. 3A because a slight rotational moment acts. Will be returned to. On the other hand, the switching operation to the second transfer state is performed by automatically rotating the tension arm 21 in the clockwise direction due to the increase in the tape tension during the REW operation, as in the case of the first embodiment. Be seen.

Further, the tension arm 21 rotates largely clockwise when unloading, but since the stopper 23 is fixed to the main chassis side, it does not interfere with the stopper 23. Further, in the unloading state, as shown in FIG. 4, the tension arm 21 is biased in the F5 direction by the toggle spring 22, so that even if the operation portion of the tension arm 21 is loose, the tape cassette 71 inside The tape 51 is in a state of being loosened in a direction away from the tape 51, and interference with the tape 51 is unlikely to occur.

The operation of the tension regulator of the present embodiment configured as described above during tape transfer is similar to that of the first embodiment of FIG. 1, and during the REW operation, similarly, the supply reel The tape is rewound in a state where the brake is not applied to 52, and further, as described above, the tension arm 21 is held in a state in which the tension arm 21 is rotated by a large amount in the clockwise direction as compared with the conventional example. The angle θ at which 51 is wound around the tension post 1b becomes small, and the tape transfer resistance at the time of rewinding can be reduced. Similarly, the load of the capstan motor during the REW operation can be reduced, and high-speed rewinding can be achieved.

As described above, the tension regulator of the present embodiment can be configured with fewer components than the tension regulator of the first embodiment, which is advantageous in terms of cost. Further, since the tension spring 5 shown in FIG. 1 is not used, the biasing force of the tension arm 21 in the second transfer state can be reduced to almost zero, and the F / F operation and the REW operation can be performed. The load of winding and rewinding the tape 51 during operation can be further reduced.

Next, a tension regulator mechanism according to a third embodiment of the present invention will be described with reference to FIGS. 5A and 5B showing the operating state of the mechanism. This tension regulator mechanism is also a mechanism incorporated in the magnetic recording tape transport mechanism. In FIG. 5A, a predetermined tension is applied to the magnetic tape 51 during the REC / PLAY operation, which is the recording / reproducing operation. The operating state in the first transfer state in which while feeding is shown. Further, FIG. 5B shows an operating state in the second transport state in which the tape 51 is rewound during the REW operation of rewinding. The other transfer mechanism section of this apparatus also has the same structure as the mechanism section described in FIG. 6 as in the first embodiment.

As shown in FIGS. 5A and 5B, the tension regulator mechanism is pivotally supported by a support shaft 31a fixed to a chassis (not shown), and its extension line is supported by the support shaft 31a. It has a tension arm 31 having a long hole 31c approaching, a tension post 31b arranged at the tip of the tension arm 31, and a pin 32a slidably fitted in the long hole 31c at the tip thereof. The spring 32, which is an elastic member whose other end is supported by the chassis 50, is a biasing force transmission member, and one end 61a and the other end 61b which are supported by a part of the tension arm 31. A tension regulator belt 61 supported by a chassis 50 (not shown), a brake plate 60 around which the belt 61 can be wound, and a stopper fixed to the chassis. The tension arm 21 is composed of a stopper 33 that comes into contact with the tension arm 21 when it rotates clockwise.

In the first transfer state at the time of REC / PLAY of this mechanism, the tension arm 31 has the urging force F5 of the spring 32 acting counterclockwise as shown in FIG. 5 (A). .. At this time, if the distance between the support shaft 31a and the line of action of the urging force F6 is d3, the counterclockwise rotation moment of the tension arm 31 is represented by F6 xd3. This rotation moment causes the tension arm 31 to rotate counterclockwise, the belt 61 is brought into pressure contact with the brake plate 60, and tension according to the rotation position of the tension arm 31 is applied to the supply reel 52. Braking force is applied.

On the other hand, in the second transfer state during the REW operation, as shown in FIG. 5B, the tension arm 31 rotates clockwise due to the tension of the tape 51, At that time, the pin 32a at the tip of the spring 32 moves toward the support shaft 31a along the long hole 31c. Therefore, the rotational moment due to the biasing force of the spring 32 is almost absent because the distance between the support shaft 31a and the line of action of the biasing force F7 is extremely small. Therefore, the rotational moment for biasing the tension post 31b in the counterclockwise direction is greatly reduced. When the tension of the tape 51 acts in this state, the tension arm 31 is held in contact with the stopper 33. Therefore, by arranging the position of the stopper 33 to the right side, the tension arm 31 can be pivoted to a large clockwise position. In this state, the belt 61 is separated from the brake plate 60 and is held in a free state.

The tension regulator mechanism is switched from the second state shown in FIG. 5 (B) to the first transfer state shown in FIG. 5 (A), and also shown in FIG. 5 (A). The switching operation from the first state to the second transfer state shown in FIG. 5B can be performed in the same manner as in the second embodiment.

The operation of the tension regulator of the present embodiment configured as described above during tape transfer is similar to that of the first embodiment of FIG. 1, and during the REW operation, the tension regulator belt 61 is Since it is loose, the load on the capstan motor for rewinding is light and high-speed feed is possible.

As explained above, according to the tension regulator of the present embodiment, it is possible to construct the tension regulator in the same manner as in the first embodiment with fewer components, which is advantageous in terms of cost. Further, the shape of the long hole 31c can make the biasing force of the tension arm 31 in the second transfer state almost zero, and further reduce the load of winding and rewinding the tape 51 during the REW operation. You can

[0043]

[Effect of the device]

 As described above, the tension regulator of the present invention reduces the biasing force to the tension post and reduces the driving force required to transfer the above strip-shaped recording medium in the state of fast-forwarding or rewinding the strip-shaped recording medium. By doing so, it is possible to reduce the motor load and increase the speed in the fast-forward or rewind transfer state. Moreover, since the motor load is reduced, the power consumption can be reduced, which has many remarkable effects.

[Brief description of drawings]

FIG. 1 is a diagram showing an operating state of a tension regulator showing a first embodiment of the present invention, in which (A) is REC /
During PLAY operation, (B) is during F / F operation or R
The figure which shows the tape transfer state at the time of EW operation.

FIG. 2 is a diagram showing an operating state of a loading mechanism in the magnetic recording / reproducing apparatus using the tension regulator of FIG.

FIG. 3 is a diagram showing an operating state of a tension regulator showing a second embodiment of the present invention, in which (A) is REC /
FIG. 6B is a diagram showing a tape transfer state during the REW operation during the PLAY operation.

FIG. 4 is a diagram showing an operation state of tape cassette loading in the magnetic recording / reproducing apparatus using the tension regulator of FIG. 3;

FIG. 5 is a diagram showing an operation state of a tension regulator showing a third embodiment of the present invention, in which (A) is REC /
FIG. 6B is a diagram showing a tape transfer state during the REW operation during the PLAY operation.

FIG. 6 is a diagram showing an outline of a tape transfer mechanism of a magnetic recording / reproducing apparatus using a conventional tension regulator.

7 is a cross-sectional view around the supply reel of the tape transfer mechanism of FIG.

8A and 8B are diagrams showing the operation state of the tension regulator of FIG. 6, wherein FIG. 8A is a tape transfer during REC / PLAY operation, and FIG. 8B is a tape transfer during FF operation or REW operation. The figure which shows a state.

[Explanation of symbols]

1,2,31 …………………… Tension arms 1b, 21b, 31b …………… Tension posts 1a, 21a, 31a ………………… Shaft 1A ………………… Tension arm first transfer position 1B ……………… Tension arm second transfer position 2 …………………… Sub-arm (transmission mechanism) 3, 22, 32 ……………… Tension Spring (elastic member, transmission mechanism) 51 …………………… Magnetic tape (strip recording medium) F1, F2, F3, F4, F5 …………… Biasing force (biasing force) Fig. 1, Fig. 3 , State of FIG. 5 (A) ……………… first transfer state Fig. 1, state of FIG. 3 and FIG. 5 (B) ……………… second transfer state

Claims (1)

[Scope of utility model registration request] 1. A biasing force in a direction intersecting with a transfer direction of the belt-shaped recording medium, which is provided so as to be rotatable about a support shaft and which is provided in a predetermined portion of the spindle, contacts the applied belt-shaped recording medium. In a tension regulator having a tension arm adapted to apply a tension to the band-shaped recording medium by causing it to act, the biasing force of the same elastic member as the source of the biasing force records the band-shaped recording medium, or The elasticity is set to be smaller in the second transfer state in which the band-shaped recording medium is fast-forwarded or rewound than in the first transfer state in which it is transferred for reproduction. A tension regulator comprising a transmission mechanism for transmitting a biasing force from a member to the tension post.