JPS63300456A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To reduce the number of parts and to reduce the cost, by moving a pinch roller supporting plate by providing 1st and 2nd cams on a rotary cam, and performing the movement to the approaching position and the pressure contacting position of a pinch roller for a capstan shaft. CONSTITUTION:A motor 20 is driven by loading a cassette tape and a rotary cam 2 is driven by rotating in counter clockwise direction. Two cam grooves 3, 4 are provided on the rotary cam 2, a main turning lever 6 is turned by the pin 7 fitting to the cam groove 3 and a tape loading is executed by the member 50, 63 for tape loading. When the member 50 for loading is rotated at the specified angle, a pinch roller supporting late 82 is rotated by the rotation of a pinch roller pressure fitting plate 78 and a pinch roller 75 is moved to the approaching position of a capstan shift 115. Thereafter a pinch roller press- contacting member 8 is rotated by the pin fitting to the cam groove 4 of the rotary cam 2 and the pinch roller 75 is thus press-contacted to the capstan 115.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a magnetic recording/reproducing device that can be used in video tape recorders, digital audio tape recorders, etc., and particularly relates to a pinch roller moving mechanism thereof.

(Prior art) In magnetic recording and reproducing devices such as video tape recorders and digital audio recorders, a pinch roller is moved to a position close to the capstan shaft during tape loading operation, and the pinch roller is pressed against the capstan shaft during recording and reproducing. let The pinch roller moving mechanism of this kind of conventional magnetic recording/reproducing apparatus is designed to press the pinch roller against the capstan shaft with a predetermined pressure by a specially provided plunger or a motor.

(Problems to be Solved by the Invention) The pinch roller moving mechanism of the conventional magnetic recording/reproducing device uses a plunger or a motor to obtain a predetermined pressing force of the pinch roller against the capstan shaft. This increases the space occupied and increases the size, increases the number of parts, and increases the cost.Also, there are problems in that it is difficult to time the operations of the tape loading mechanism and the pinch roller moving mechanism.

The present invention has been made to solve the problems of the prior art, and utilizes a tape loading mechanism essential to magnetic recording and reproducing devices such as video tape recorders and digital audio recorders to move the pinch roller. By doing so, it becomes unnecessary to provide a plunger, motor, etc. in the pinch roller moving mechanism.
Fewer parts, lower cost (can be made thinner,
Another object of the present invention is to provide a magnetic recording and reproducing device in which the operation timing of the tape loading mechanism and the pinch roller moving mechanism can be easily determined.

(Means for Solving the Problems) The present invention provides a rotating cam rotatably driven by a motor;
A tape loading member whose position is controlled by a first cam provided on the rotating cam, and a pinch roller that is attached to the capstan shaft and can be pressed against the capstan shaft, and the pinch roller is moved close to the capstan shaft by the tape loading member. Pinch roller pressure welding whose position is controlled by a support plate and a second cam provided on the rotary cam, and which moves the pinch roller support plate from a position near the capstan shaft to a position where the pinch roller presses against the capstan shaft. It is characterized by comprising a member.

(Operation) When the rotary cam is rotationally driven by the motor, the tape is loaded by the tape loading member, and the pinch roller support plate is moved to a position near the capstan shaft. The position of the pinch roller pressing member is controlled by the second cam of the rotary cam, and the pinch roller is moved from a position near the capstan shaft to a position where it presses against the capstan shaft, thereby entering the recording/reproducing mode.

(Embodiments) Hereinafter, embodiments of the magnetic recording and reproducing apparatus according to the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 110 denotes a rotating drum having a magnetic head, and on both left and right sides of the drum 110 are inclined blocks 11 for winding the tape around the drum 110 at a predetermined angle.
3.114 is fixed to a chassis not shown,
Also, on the oblique sides of each inclined block 113, 114, there are stoppers 111, 1 for positioning a guide stand, which will be described later.
12 is fixed.

At the bottom of FIG. 1, a supply reel stand 101 and a take-up reel stand 102 are arranged on the left and right. A guide lever 57 is supported rotatably around a shaft 58 on the right side of the reel stand 101, and a guide lever 69 is similarly supported rotatably around a shaft 73 on the left side of the reel stand 101. There is. Each guide lever 57, 69 has a sickle shape, has a guide roller 62, 70 attached to its distal end, and has a connecting pin 59, 72 on its proximal side. The guide lever 57 is urged to rotate clockwise by a spring 60, and the guide lever 69 is urged to rotate counterclockwise by a spring 74.

A tape loading member 50.63 is arranged so as to partially overlap each lever 57.69. Each loading member 50.63 has a respective outer shaft 15.
．． 12, with their distal ends facing inward, and each having an abutment surface 84.
71. Connecting pins 59.72 of the guide levers 57.69 are attached to each contact surface 84.71 of the lever 5.
They are brought into contact by a spring biasing force of 7.69. At the tip of each loading member 50.63 are fulcrum pins 51, 6.
4, connecting plates 52, 65 are pivotally mounted. Connecting plate 5
2.65 are further pivotally connected to tape guide stands 55.68 by fulcrum pins 53.66, respectively.

Each guide stand 55.68 has a vertical guide roller 54.67
have.

In FIGS. 7 and 8, the guide stand 68 is connected to the chassis 4.
5 and a guide board 117 fixed on the chassis 45 at a predetermined interval. As shown in FIG. 4, the guide substrate 117 is formed with a substantially circular hole 119 and a guide groove 118 extending from the hole 119 in a V-shape to both sides of the rotating drum 1100. The guide stand 68 is inserted through the hole 119, and the base of the guide roller 67 and the head of the fulcrum pin 66 are connected to the guide 41.
18 , the guide stand 68 can move along the guide groove 118 toward the stopper 112 . An inclined surface 87 is formed at the top end of the guide stand 68, and an appropriate number of sliding contact portions 86 are protruded from the lower side of the guide stand 68. The stopper 112 for positioning the guide stand 68 has an inverted vertical cross-sectional shape, and the guide roller 67
The V-shaped receiver against which the base of the V-shaped receiver is to abut has a portion, and an adjustment screw 88 is screwed in the vertical direction. The adjustment screw 88 passes through the groove of the guide board 117 and comes into contact with the inclined surface 87 of the guide stand 68, thereby pressing the guide stand 68 against the chassis 45. The verticality of the guide roller 67 is determined by the relationship between the contact position between the adjustment screw 88 and the inclined surface 87 and the contact position between the base of the guide roller 67 and the above-mentioned 7-shaped receiver of the stopper 112. Therefore, by adjusting the adjustment screw 88, the verticality of the guide roller 67 can be adjusted. The sliding contact portions 86 of the guide stand 68 with respect to the chassis 45 are four (li) in the illustrated example, but stability is better with three in fact.The configuration of the guide stand and stopper on the tape supply side has been described above. , the guide base 55 and the stopper 111 on the winding side are constructed in the same way.In this way, the guide board 11 fixed to the chassis 45 does not directly form a guide groove for guiding the guide base on the chassis.
By forming the guide groove 118 in the chassis 4
5 can be avoided.

In FIGS. 1 and 2, each loading member 50
．． The main rotating lever 6 is arranged below the main rotating lever 63 in the left-right direction. The main rotating lever 6 is rotatably provided around a shaft 5 at the center in the left-right direction, and a pin 7 fixed relatively close to the shaft 5 is fitted into the cam groove 3 of the rotating cam 2. There is.

The right end of the main rotation lever 6 and the loading member 5
A tension spring 17 is applied between the pin 16 fixed near the center of rotation, and this urging force causes the pin 16 to come into contact with the upper horizontal surface of the lever 6, causing the lever 6 to move clockwise. When it rotates, this rotational force is transmitted to the loading member 50 via the spring 17, and the loading member 50 follows and rotates clockwise. A tension spring 14 is also applied between the left end of the lever 6 and a pin 13 fixed near the center of rotation of the loading member 63, and this biasing force causes the pin 13 to be attached to the lower side of the lever 6. When the lever 6 contacts the horizontal surface and rotates clockwise, this rotational force is transmitted to the loading member 63 via the spring 14, and the loading member 63 follows the lever 6 and rotates counterclockwise. Rotate.

In FIGS. 2, 3, and 5, the rotating cam 2 is provided integrally with the rotating shaft 1, and has two spiral cam grooves 3 on the top surface.
, 4. The first cam groove 3 has a portion on the outer circumferential side where the diameter does not change within a relatively small angle θ, a portion where the diameter continuously decreases, and a portion where the diameter does not change over the angle α. Consists of the second cam! i4 is 1
The 0-rotation cam 2 is rotationally driven by a motor 20, and consists of a portion with an equal diameter from the center of rotation over an angle β of nearly 80°, a portion with a sequentially decreasing diameter, and a portion with a constant diameter. . As shown in Figure 2,
The rotational force of the motor 20 is transmitted to the worm 23 via the belt 22 and the pulley 21, and the rotational force of the worm 23 is transmitted to the cam 2 via the worm wheel 24 and the reduction gear 25.

1 and 2, a pin 9 fixed to the end of one arm of the pinch roller pressing member 8 is fitted into the cam groove 4 of the cam 2. As shown in FIGS. The pinch roller pressure contact member 8 has three arms,
One arm end is connected to a release lever 18 by a connecting pin lO.
It is pivotally attached to one end of the . A contact surface 83 is formed at the other arm end of the pinch roller pressure contact member 8 by bending.

The lever 18 passes near the rotating drum 110 in the left-right direction, and a pin 19 is fixed to the left end of the lever 18. The pin 19 faces a bent edge on one side of the tension lever 27. As shown in FIG. 6, the lever 27 is rotatably provided around a shaft 41, and is rotated by a spring 42 in a direction (counterclockwise in FIG. 6) so that the bent edge comes into contact with the pin 19. energized. A plurality of holes 43 on the chassis side for hanging the spring 42 are formed, and by selecting and using one of them, the biasing force of the lever 27 can be adjusted. A tension roller 4 is attached to the tip of the lever 27.
There are 6. When the lever 27 rotates in the urging direction, the roller 46 advances into the tape path. The lever 27 has a vertical notch edge 48, and a sensor 47 is fixed at a position overlapping the notch edge 48. The sensor 47 detects the rotational position of the lever 27.

In FIGS. 1 and 4, a pinch roller pressure bonding plate 78 and a pinch roller support plate 82 are connected to a shaft 76 on the tape winding side.
is rotatably supported. Pinch roller support plate 82
has a pinch roller 75 at the tip, and a fixed spring hook 8
1 and is biased to rotate in the counterclockwise direction by a spring 80 applied between the two. When the pinch roller support plate 82 rotates against the applied force, the capstan shaft 115 is located on the path of the pinch roller 750. A tension spring 79 is placed between the pinch roller support plate 82 and the pinch roller pressure bonding plate 78, and biases the pinch roller pressure bonding plate 78 counterclockwise with respect to the pinch roller support plate 82. An engagement piece 77 is formed by bending at the tip of the pinch roller crimping plate 78, and the retaining piece 77 comes into contact with the side edge of the pinch roller support plate 82 due to the biasing force of the spring 79, thereby closing the pinch roller support plate 78. 82 and the pinch roller pressure bonding plate 78 temporarily rotate together. A pinch roller pressure contact pin 11 is fixedly planted on the pinch roller pressure contact plate 78. When the pinch roller pressure bonding plate 78 is rotated clockwise as shown in FIG. 4, the pin 11 is located on the side of the contact surface 83 of the pinch roller pressure contact member 8. Further, the pin 11 is located in a passageway of a pressing portion 56 protruding from the loading member 50.

3 and 5, a portion 92 of a constant diameter is cut out on the outer periphery of the rotating cam 2 (by which a concave portion 1 for the brake 1 is cut out).
04 is formed. A brake operating lever 90 is provided near the cam 2 and is rotatable about a shaft 91 and biased to rotate counterclockwise by a lever spring 103 . One arm end of the lever 90 is in sliding contact with the outer peripheral surface of the cam 2, and rotation in the direction of the biasing force is restricted. Each reel stand 101, 10 is located near the supply side reel stand 101 and the take-up side reel stand 102.
A brake piece 97 that can be pressed against the outer peripheral surface of No. 2,
A brake member 98.95 with 94 is mounted rotatably about an axis 99.96. Each brake member 98
．． A tension spring 100 is applied between the brake members 95 and 95 to urge the respective brake pieces 97 and 94 to rotate in a direction in which they come into pressure contact with the outer peripheral surfaces of the respective reel stands 101 and 102. The other arm end 93 of the lever 90 extends toward the brake piece 94 of the brake member 95, and as shown in FIG. When in sliding contact, the arm end 93 pushes the brake piece 94 to rotate the brake member 95 against the urging force, thereby separating the brake piece 94 from the reel stand 102. Each brake member 95.9
8 are connected by abutment of both protrusions, and when the brake member 95 rotates counterclockwise, the brake member 98 rotates clockwise, separating the brake piece 97 from the reel stand 101. As shown in FIG. 5, when the cam 2 rotates and one arm end of the lever 90 falls into the recess 104 of the cam 2, the lever 90 rotates in the direction of the urging force and the other arm end 93 escapes from the brake piece 94. , the brake member 95 rotates clockwise, the brake member 98 rotates counterclockwise, and the brake piece 94.97
is pressed against the outer peripheral surface of each reel stand 101, 102 to apply a brake.

In FIGS. 10 and 11, a pin 34 is also fixed to the rotating cam 2. As shown in FIGS. One end of the intermediate lever 33 is located on the path of the pin 34. The lever 33 is connected to the pillar 29.
30.31, the support plate 28 is rotatably supported around the pillar 30 of the support plate 28 fixed to the chassis.

A pin 35 is fixed to the other end of the lever 33.
is fitted into a fork portion at one end of a connecting lever 36 that is rotatable about a shaft 37. The other end of the connecting lever 36 is connected to an eject lever 39 via a pin 38. When the cam 2 rotates clockwise in FIG. 10, its pin 34 rotates the intermediate lever 33 counterclockwise, rotates the connecting lever 36 clockwise, and moves the eject lever 39 upward in FIG. let This releases the positioning of the tape cassette and allows the cassette to be taken out.

As shown in FIG. 11, a potentiometer 32 is provided integrally with the shaft 1 of the rotating cam 2. This is rotating cam 2
This is for controlling the rotational position of the rotary cam 2 by detecting the rotational position of the rotary cam 2, and may be replaced with a rotary encoder or the like.

Next, the operation of the above embodiment will be explained.

FIG. 1 shows the state in which the cassette is removed. The rotational position of the rotary cam 2 at this time is as shown in FIG. 2, and each pin 7.9 is located in the large diameter portion of each cam groove 3.4. Also,
As shown in FIG. 3, the brake operating lever 90 is rotated by the outer circumferential surface of the cam 2 against the urging force of the brake member 95.
．． 98 is forcibly rotated to release the braking force on the reel stands 101 and 102.

When a cassette tape is loaded, the motor 20 shown in FIG.
is driven, and the rotary cam 2 is rotationally driven in the counterclockwise direction via the speed reduction mechanism. Since the diameter of the cam groove 4 into which the pin 9 is fitted does not change within the initial rotation angle range of the cam 2, the pinch roller pressing member 8 does not rotate. On the other hand, the diameter of the cam groove 3 into which the pin 7 fits gradually decreases toward the center from the beginning of the rotation of the cam 2, so the pin 7 is drawn toward the shaft 1.
The main pivot lever 6 pivots clockwise in FIG.

Since the distance from the shaft 5 of the lever 6 to the pin 7 is short relative to the total length of the lever 6, the movement stroke of both left and right ends of the lever 6 is quite large. At the same time, it is transmitted to the loading member 63 via the spring 14, and the loading member 50 rotates clockwise and the loading member 63 rotates counterclockwise following the lever 6. The rotation of the loading member 50.63 pushes the guide stands 55.68 through the connecting plates 52.65, and each guide stand 55.68 moves toward the stoppers 111.68 while being guided by the guide grooves 118. I am made to do so.

On the other hand, due to the rotation of each loading member 50.63, its contact surface 84.71 escapes from the pin 59.72, and the loading member 5
0.63 and rotate clockwise and counterclockwise, respectively. Guide roller 6 by rotation of lever 57.69
The tape is pulled out from the cassette by the movement of 2.70 and the movement of the guide roller 54.67 of the guide stand 55.68.

Further, when the loading member 50 rotates by a predetermined angle, its pressing portion 56 hits and pushes the pin 11 of the pinch roller pressure bonding plate 78, causing the pressure bonding plate 78 to rotate clockwise. Due to the rotation of the pressure bonding plate 78, the engagement piece 77 tries to escape from the pinch roller support plate 82, but the support plate 82
The tension roller 79 rotates clockwise following the pinch roller crimping@78, and moves the pinch roller 75 to a position near the capstan shaft 115. At this time, the pin 11 of the pinch roller support member 82 is located on the side of the contact surface 83 of the pinch roller pressure contact member 8, as shown in FIG.

In this way, as shown in FIG. 4, each guide table 55, 68 moves until its guide rollers 54, 67 come into contact with the stoppers 111, 112, and the tape between the rollers 54, 67 is placed on the outer peripheral surface of the rotating drum 110. The guide rollers 62 and 70 are wrapped around the rotating drum 1.
10 to guide the tape along a predetermined path. On the other hand, the pinch roller 75 is connected to the capstan shaft 1.
15, but the capstan shaft is still 115.
It is separated from.

The state shown in FIG. 4 is the stop position, and the rotary cam 2 rotates approximately half a turn, and as shown in FIG. Apply the brakes to 101 and 102.

The rotating cam 2 further rotates counterclockwise from the position shown in FIG. Due to the rotation of the cam 2, the pin 7 enters the radial area α between the cam grooves 3, so the main rotating lever 6 does not rotate from the position shown in FIG. 4, and each guide roller 54°67.62. To is the fourth
However, since the pin 9 enters the portion of the cam groove 4 whose diameter is gradually reduced, the pinch roller pressing member 8 rotates clockwise as shown in FIG.
3 pushes the pin 11 and rotates the pinch roller pressure bonding plate 78 clockwise. This rotation of the pressure bonding plate 78 causes its bent portion 77 to escape from the pinch roller support plate 82, and the spring 79 is biased. This biasing force of the biasing force spring 80 is overcome and the pinch roller support plate 82 rotates clockwise.

As a result, the pinch roller 75 presses the tape against the capstan shaft 115 and transports the tape at a constant speed. Since the guide stand 55.68 does not move during the process of pressing the pinch roller 75 against the capstan shaft 115, the stopper 111.1
The pressing force of the guide rollers 54 and 67 against the brake lever 9 does not change, and the rotation of the cam 2 causes the brake operation lever 9 to
0 is pushed by the same radial surface 92 of the cam 2 and rotated clockwise in FIG.
4.97 is separated from the reel stands 101 and 102, the brake is released, and the play state as shown in FIG. 6 is entered.

The clockwise rotation of the pinch roller pressing member 8 moves the lever 18 to the right, and the pin 19 escapes from the tension lever 27. The lever 27 is rotated counterclockwise in FIG. 6 by the biasing force of the spring, and the tension roller 46 is pressed against the tape T with a predetermined pressure. The rotational position of the lever 27 depends on the tension of the tape T.

Therefore, the rotational position of the lever 27 is detected by the sensor 47, and this detection signal is input to the tension control device to control the tape tension to be constant. Any suitable tension control device may be used.

Next, high-speed search will be explained. In the case of a high-speed search, the rotating cam 2 is performed at a position slightly rotated clockwise from the position shown in FIG. 5, in other words, at a position before reaching the stop position shown in FIG. 5 in the tape loading operation described above. . In this position, the lever 90 is connected to the reel stand 101.
．． 102 is released, the guide rollers 54, 67 are slightly separated from the stoppers 111, 112, and the pinch roller 75 is separated from the capstan shaft 115, so if the reel is rotated at high speed in this state, the tape will be removed. The tape can be transported at high speed, and by reproducing the signals recorded on the tape with the rotating drum 110, the tape can be transported to a desired position.

If the above-mentioned high-speed search is, for example, a 20 times search, an even faster search, such as a 400 times search, is also possible. In the case of ultra-high speed search, the rotary cam 2 is stopped at a position midway through the tape loading operation, resulting in a state as shown in FIG. In the state shown in Fig. 9, each guide roller 54.67°62.70 and pinch roller 7
5 is in the middle of a predetermined movement stroke, the tape is not yet in contact with the rotating drum 110, so the load on the tape transport system is light, and if the reel is driven to rotate at an ultra-high speed in this state, the tape can be moved at an ultra-high speed. Can be transported. Therefore, the amount of tape transported is counted by means such as adding the number of revolutions of the reel drive motor or counting the number of revolutions of the reel, and when the desired amount of transport is reached, the transport is stopped.

As mentioned above, there are various operation modes, and each time each operation mode ends, the rotary cam 2 is returned to the stop position as shown in FIG. prevent loosening.

Next, the eject operation will be explained. When the eject button is pressed, the rotating cam 2 is driven to rotate in the opposite direction.
Each part returns to its original position as shown in FIG. 1 through the mode shown in FIG. 9 by the reverse operation of the tape loading described above. That is, first, the pinch roller 75 separates from the capstan shaft 115, and then the guide rollers 54, 67 move away from the stopper 111.
．． 112 and return to the original position, and the guide roller 6
2.70 returns to the original position. During this time, the tape that has been pulled out from the cassette is stored in the cassette. on the other hand,
The rotating cam 2 further rotates counterclockwise from the original position shown in FIG. 2 within a range indicated by an angle θ. Within the range of the above angle θ, the radius of the cam groove 3.4 does not change, and the guide rollers, pinch rollers, etc. mentioned above do not move from their original positions in Fig. 1. However, the cam 2 rotates within the range of the above angle θ. At this time, as shown in FIG. 10, the pin 34 rotates the intermediate lever 33 counterclockwise, rotates the coupling lever 36 clockwise, and moves the release lever 39 upward in FIG. 1O. This movement of the lever 39 releases the restraint and positioning of the tape cassette, and the tape cassette is ejected.

After the cassette is ejected, the cam 2 returns to its original position as shown in FIG.

At each operating position, the rotating cam 2 must be stopped at a predetermined rotational position, and the stopping position of the cam 2 can be detected by the output of the potentiometer 32 shown in FIG.

According to the embodiment described above, the tape loading member 5 is driven by the rotary cam 2 which is rotationally driven by the motor 20.
0.63, the pinch roller support plate 82 is moved to the vicinity of the capstan shaft 115 by one of the tape loading members 50. Since the pinch roller support plate 82 is moved by controlling the position of the roller pressure contact member 8, and the pinch roller support plate 82 near the capstan shaft 115 is brought into pressure contact with the capstan shaft 115, a plunger or a plunger is not included in the pinch roller movement mechanism. There is no need to use a motor, etc. (this makes it possible to reduce the size, reduce the number of parts, and reduce costs. Also, since the pinch roller is moved using a tape loading mechanism, it is possible to reduce the size of the tape. The operation timing of the loading mechanism and the pinch roller moving mechanism can be easily adjusted.Furthermore, in the rotary cam 2, both the lever for tape loading and the lever for pressing the pinch roller are on the rotation center side, so the side pressure of the cam is can produce large amounts of force evenly.

(Effects of the Invention) According to the present invention, tape loading is performed by controlling the position of the tape loading member using a rotary cam rotationally driven by a motor, and the tape loading member moves the pinch roller support plate near the capstan shaft. In addition, the rotating cam controls the position of the pinch roller pressing member to move the pinch roller support plate so that the pinch roller support plate near the capstan shaft is brought into pressure contact with the capstan shaft. There is no need to use a plunger or motor in the pinch roller movement mechanism, which allows for miniaturization and fewer parts (thus reducing costs). Since the rollers are moved, the timing of the operations of the tape loading mechanism and the pinch roller moving mechanism can be easily determined.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the magnetic recording/reproducing device according to the present invention, Fig. 2 is a plan view of the peripheral portion of the rotating cam in the above embodiment, and Fig. 3 is a brake mechanism part in the above embodiment. FIG. 4 is a plan view showing the tape loading operation of the above embodiment, FIG. 5 is a plan view showing different operating modes of the brake mechanism portion, and FIG. 6 is a plan view showing the play operation of the above embodiment. 7 is a vertical sectional view showing the tape guide stand in the above embodiment, FIG. 8 is a bottom view of the same guide stand, and FIG. 9 is a plan view showing the ultra-high speed search mode of the above embodiment. 10 is a plan view showing the eject mechanism portion in the above embodiment, and FIG. 11 is a longitudinal sectional view of the same. 2... Rotating cam, 3... First cam, 4... Second cam, 8... Pinch roller pressure contact member, 20... Motor, 50
．． 63...For tape loading. Parts, 55.68...Tape guide stand, 75...
Pinch roller, 82...Pinch roller support plate, 115
...Capstan shaft. ) Bou / However 7 Thoughts Z Prisoner v > tyo vbc Man 6 Soru δ Kenchi 7 [ Procedural amendment March 14, 1988

Claims (1)

[Scope of Claims] A rotating cam rotationally driven by a motor, a tape loading member whose position is controlled by a first cam provided on the rotating cam, and a tape guide stand moved by the tape loading member. A pinch roller that can be press-contacted to the capstan shaft is attached, and its position is controlled by a pinch roller support plate that is moved close to the capstan shaft by a tape loading member, and a second cam provided on the rotating cam, A magnetic recording/reproducing device comprising: a pinch roller pressing member that moves a pinch roller support plate from a position near a capstan shaft to a position where the pinch roller is pressed against the capstan shaft.