JPH0356897Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention will be explained in the following order.

A. Field of industrial application B. Overview of the invention C. Conventional technology D. Problem to be solved by the invention E. Means for solving the problem F. Effect G. Example G _1. Structure of movable chassis and opening height regulating member Explanation (Figure 3).

G ₂ Explanation of the mounting structure of the moving chassis (1A~
2nd B).

Explanation of the structure of the _G3 tape cassette (Figs. 1A to 2B, and 4).

G ₄ Explanation of tape loading and tape unloading operations (FIGS. 1A to 2B).

A. Field of Industrial Application The present invention is a cassette-type recording/playback device that is most suitable for application to, for example, an 8mm video camera built-in camera, and the tape is pulled out from the tape cassette and loaded onto a rotating head drum for recording or recording. Concerning things that perform reproduction.

B. Overview of the invention In this invention, after a tape cassette is mounted on a chassis and a pair of left and right internal reels are engaged with a pair of left and right reel stands, the tape is pulled out from inside the tape cassette by a tape loading means. In a cassette-type recording and reproducing apparatus such as an 8 mm video camera integrated with a camera, which is loaded onto a rotating head drum by moving the chassis after the tape cassette is loaded, the tape cassette is brought close to the rotating head drum. , the stability of tape running and the accuracy of recording and playback are extremely high, while the entire cassette type recording and playback device can be significantly miniaturized,
Moreover, by bringing the tape cassette close to the rotating head drum while the opening height of the opening/closing lid of the tape cassette is reliably regulated, the opening/closing lid of the tape cassette does not accidentally come into contact with the rotating head drum, and the tape can be opened easily. The cassette can be brought safely and widely close to the rotating head drum.

C. PRIOR TECHNOLOGY As is well known, conventional cassette-type video tape recorders such as 8mm video tape recorders with built-in cameras have an opening/closing lid that mounts a tape cassette on a chassis and closes the front opening for drawing out the tape. After rotating upward to open the lid and engaging the pair of left and right internal reels with the pair of left and right reel stands, the tape is pulled out from inside the tape cassette by the tape loading means and loaded onto the rotating head drum. In this state, while the tape is running at a constant speed along the loading path, recording or reproduction is performed by rotating the rotary head drum.

D Problems that the invention aims to solve In the conventional cassette-type video tape recorder,
When the tape cassette is mounted on the chassis and the opening/closing lid is rotated upward to open the lid and engage with a pair of left and right reel stands, etc., the opening/closing lid of the tape cassette and the tape stored inside are removed. Place the tape cassette in a safe position far enough away from the rotating head drum to prevent it from accidentally hitting the rotating head drum and damaging each other (especially if the upper drum is a rotating drum). It is mounted on the chassis.

However, the overall size of the video tape recorder has increased by the distance that the tape cassette is separated from the rotating head drum.

Therefore, a method for reducing the distance between the tape cassette and the rotary head drum is very important in reducing the overall size of the video tape recorder.

Conventionally, a method has been considered in which a rotary head drum is configured to be movable on a chassis, and after a tape cassette is mounted on the chassis, the rotary head drum is moved on the chassis to be brought close to the tape cassette. However, the rotating head drum is the heart of the video tape recorder and is a part that is controlled with extremely high precision on the order of microns. Therefore, in reality, if a structure in which the rotating head drum is moved on a chassis is adopted, the instability of tape running increases and the precision of recording and playback becomes extremely low, so this method has not been used until now. However, it has not been put into practical use.

The present invention has extremely high tape running stability and recording and playback accuracy, while also being able to greatly reduce the distance between the tape cassette mounted on the chassis and the rotating head drum. Moreover, it is possible to prevent the opening/closing lid of the tape cassette from accidentally coming into contact with the rotating head drum.

E. Means for Solving the Problems The present invention consists of a fixed chassis with a rotating head drum attached to the top, a pair of left and right reel stands attached to the top, and the pair of left and right reel stands separated from the rotating head drum. A movable chassis is reciprocated on a fixed chassis between a movable position and a forward movable position close to a rotary head drum, and a tape is wound on a pair of left and right reels and stored inside.
A top and bottom rotatable opening/closing lid is provided for opening and closing the front opening for tape drawer, and the lid is mounted from above on the movable chassis that is returned to the return position, and is attached to the pair of left and right reels. is vertically mounted on a tape cassette that is engaged with the pair of left and right reel stands and on the movable chassis,
In the tape cassette mounted on the movable chassis from above, it is inserted relatively from below to a deep position inside the tape stretched along the front opening, and the opening/closing lid rides on the top and opens. After the tape cassette is attached to the lid height regulating member that supports the opening/closing lid from below, the movable chassis is moved from the backward movement position to the forward movement position, and the tape cassette is rotated. a drive means for bringing the tape close to the head drum; and a tape loading means for pulling out the tape in the tape cassette brought close to the rotary head drum and loading it onto the rotary head drum; is configured to be supported at a position higher than the height of the portion of the rotary head drum adjacent to the tape cassette, and the portion of the rotary head drum adjacent to the tape cassette extends to a position where the portion of the rotary head drum adjacent to the tape cassette slides into the lower position of the opened lid. The tape cassette is arranged in close proximity to the rotating head drum.

F. Function The present invention is to move a tape cassette mounted on a movable chassis together with a pair of left and right reel stands by the movable chassis while keeping the rotary head drum fixed on a fixed chassis so as to bring the tape cassette close to the rotary head drum. . Therefore, since the rotating head drum is not moved in any way, there is no increase in the instability of tape running caused by moving the rotating head drum, and the stability of tape running and the accuracy of recording and playback are extremely high. However, the distance between the tape cassette and the rotating head drum can be greatly reduced.

Moreover, in the present invention, when the tape cassette is brought close to the rotating head drum by the moving chassis,
The opening height of the opening/closing lid of the tape cassette is surely regulated by the opening height regulating member provided on the moving chassis, and the opening/closing lid is moved to the lower position where the opening/closing lid is regulated. This allows the rotating head drum to be safely submerged. Therefore, it is possible to prevent the opening/closing lid of the tape cassette from accidentally coming into contact with the rotating head drum and damaging each other, so the tape cassette can be brought safely and close to the rotating head drum. be able to.

G. Embodiment Hereinafter, an embodiment in which the present invention is applied to an 8 mm video camera integrated therein will be described based on the drawings.

_G1 First, the structure of the movable chassis and the opening height regulating member will be explained with reference to FIG.

The movable chassis 1 is made of a metal plate such as a stainless steel plate that is approximately U-shaped, and is reinforced with a plurality of ribs 2 that are integrally bent around the periphery, so that it can be horizontally aligned with high precision. It is processed into a flat plate. A pair of left and right reel stands consisting of a supply reel stand 3a and a take-up reel stand 3b are rotatably attached to the upper part of the rear end side of the movable chassis 1. An opening 4 is provided in which a reel stand drive mechanism is disposed. Furthermore, guide holes 5, which are elongated holes extending in the front-rear direction, are provided at four locations on the front, rear, left and right sides of the movable chassis 1 in parallel to each other. Further, a pair of left and right cassette positioning pins 6 and a cassette mounting table 7 are attached to the upper part of the movable chassis 1, respectively.

At the front end of the movable chassis 1, a pair of left and right guide rails 9a and 9b for guiding tape loading means, which will be described later, are provided horizontally.
Both guide rails 9a and 9b are formed by outsert molding of synthetic resin such as polyacetal resin onto the movable chassis 1 made of a metal plate such as a stainless steel plate. And these two guide rails 9
A and 9b are each provided with a guide groove 10 which is suitably curved along the center portion thereof, and the tips (front ends) 10a of both guide grooves 10 are open.

At the upper part of the movable chassis 1 at approximately the center in the left-right direction and the front-back direction, an opening height regulating member 12 made of synthetic resin such as polyacetal resin or metal is fixed with screws 13 or by outsert molding. installed. The opening height regulating member 12 shown here is a vertical plate member with a predetermined length _l4 on the left and right sides and a predetermined height _H1 on the top and bottom, and is slightly curved along the circumferential surface of a rotating head drum, which will be described later. The drum protection plate 14 also serves as a drum protection plate 14, and a predetermined height _H2 is provided on the entire surface of the drum protection plate 14 at a position offset to one side from the center in the left and right longitudinal direction of the drum protection plate 14. A lid opening height regulating pin 15 is integrally molded and provided.

A horizontal opening pin 37 is attached to one side of the front end of the movable chassis 1 via a vertical mounting plate 38.

A tension detection pin 51 is rotatably mounted on one side of the front end of the movable chassis 1 via an arm 52, and a tape pull-out pin 54 is mounted on the other side of the front end of the movable chassis 1. and a pinch roller 55 are rotatably mounted via arms 56 and 57, respectively. Note that the tension detection pin 51 is connected to a band brake (not shown) that is mounted on the movable chassis 1 and adjusts the braking force of the supply reel stand 3a.

G ₂ Next, install the mounting structure of the moving chassis in 1A.
This will be explained with reference to FIGS. 2B to 2B.

The fixed chassis 17 is made of a metal plate such as an aluminum plate, and a rotary head drum 18 is mounted on the upper part of the front end side of the fixed chassis 17 via a drum base 19 made of a metal such as aluminum. installed. Note that in this rotating head drum 18, the upper drum 18a is configured as a rotating drum, and the lower drum 18b is configured as a drum base 19.
It consists of a fixed drum fixed to the top. As shown in FIG. 1A, this rotary head drum 18 is mounted so as to be inclined at a predetermined angle in the direction of an arrow a, which is inclined at a predetermined angle θ with respect to a reference line P parallel to the front surface of a tape cassette, which will be described later. There is. In addition, the upper part of this fixed chassis 17 has front and rear,
Guide pins 20 are fixed at four locations on the left and right, and the movable chassis 1 is engaged with the upper ends of these four guide pins 20 through four guide holes 5 and is mounted horizontally. And mobile chassis 1
is on the fixed chassis 17 and is guided by the four guide pins 20 and the guide hole 5 to indicate the distance direction with respect to the rotary head drum 18, which is indicated by the arrows b,
It is configured to be movable horizontally in the c direction. As shown in FIGS. 1A and 2A, the drum protection plate 14 on the movable chassis 1 is attached to the rotating head drum 18.
It is placed in a position that covers the entire surface of the

A pair of left and right tape loading means 27a, 2
7b is constituted by a vertical rotating guide 29 consisting of a rotating roller mounted on a moving block 28 and an inclined guide 30 consisting of a fixed pin. These tape loading means 27a, 27b are connected to both guide rails 9a, 9 of the movable chassis 1 by means of these moving blocks 28.
arrows d and e, which are the far and near directions with respect to the rotating head drum 18, are placed on the rotating head drum 18 on both the guide rails 9a and 9b while being guided by both the guide grooves 10.
It is configured to be moved horizontally in the direction.

The movable chassis 1 is driven in the directions of arrows b and c, and the tape loading means 27a and 27b are driven in the directions of arrows d and e by a motor (not shown) which is a driving means mounted on the fixed chassis 17. It is designed to be carried out with

A pair of horizontal guide positioning bases 46a and 46b are integrally provided at both left and right ends of the drum base 19. These guide positioning bases 46a and 46b have both guide rails 9a and 9.
A pair of guide grooves 47 are provided to which the tips 10a of both guide grooves 10 of b are connected, and the tips (rear ends) 47a are each open.

A capstan 62 and an impedance roller 63 are rotatably mounted on the fixed chassis 17 on both sides of the rotary head drum 18. In addition, a reel stand drive mechanism 64 is located between the two reel stands 3a and 3b on the fixed chassis 17.
is installed.

_G3 Next, the structure of the tape cassette will be explained with reference to FIGS. 1A to 2B and FIG. 4.

Tape cassette 7, which is an 8mm video cassette
1 is a tape (magnetic tape) on a pair of left and right reels consisting of a supply reel 72a and a take-up reel 72b.
73 is wound and stored in a cassette housing 74. The cassette case 74 is provided with a front opening 75 for drawing out the tape and a bottom opening 76 connected to the front opening 75 for inserting a tape loading means.
The tape is guided by a pair of left and right tape guides 77 provided inside and stretched along the front opening 75.
5 is provided with a lid 78 that can be opened and closed vertically.

Note that the opening/closing lid 78 shown here has a front opening 75.
It is comprised of a front lid 79 that opens and closes the front side of the tape 73 that is stretched along the tape 73, and a rear lid 80 that opens and closes the rear side of the tape 73. The front cover 79 is approximately U-shaped and is attached to the left and right outer walls 74a of the cassette casing 74 via a pair of left and right fulcrum pins 81 so as to be rotatable in the up and down directions of arrows f and g. . Further, the rear lid 80 is shorter in length in the left and right direction than the front lid 79,
The rear lid 80 is rotatably attached to a pair of left and right support pieces 82 provided on the back side of the front lid 79 via a pair of left and right support pins 83 . Further, a pair of left and right guide pins 84 provided on the back side of the rear lid 80 connect to a pair of left and right guide grooves 85 provided on both left and right inner walls 74b of the cassette housing 74 and extending vertically.
is engaged within.

In a state before the tape cassette 71 is mounted on the movable chassis 1, which will be described later, the front lid 79 is moved to the closed position by the closing spring (not shown) by the arrow G, as shown by the solid line in FIG. At the same time, the rear lid 80 is also rotated to the closed position, and the tape 73 stretched along the front opening 75 is rotated by the front and rear lids 79 and 80. It is closed from the front and back. On the other hand, as will be described later, when the tape cassette 71 is mounted horizontally on the movable chassis 1 from above, as shown by the dashed line in FIG.
The front lid 79 is rotated approximately 90 degrees in the direction of arrow f against the closing spring to the open position by the opening pin 37, and in conjunction with this, the rear lid 80 is also approximately moved to the open position. The front opening 75 is completely opened by being rotated by 90 degrees. At this time, due to the guiding action of both guide pins 84 by both guide grooves 85, the rear cover 80 is rotated in the direction of arrow f while being separated from the tape 73 to the rear side, as shown by the dashed line in FIG. As shown, the rear lid 80 is configured to be in a substantially horizontal state below the front lid 79 in the open position.

_G4 Next, tape loading and tape unloading operations will be explained with reference to FIGS. 1A to 2B.

First, before the cassette is installed, the movable chassis 1 is moved backward in the direction of arrow b to the backward movement position shown in FIGS. 1A and 2A, and both reel stands 3a,
3b is spaced from the rotating head drum 18 by a large distance l ₁ . Before the cassette is loaded, the tape loading means 27a, 27b, the tension detection pin 51, the tape pull-out pin 54, and the pinch roller 55 are each moved back to the back movement position shown in FIG. 1A.

Next, in this state, the tape cassette 71 is mounted onto the movable chassis 1 from above by a cassette mounting device (not shown) as shown in FIGS. 1A and 2A, and both cassette positioning pins 6 and both cassettes are The reels 72a and 72b are horizontally mounted and positioned on the mounting table 7, and the reels 72a and 72b are mounted on the reel table 3a,
3b.

When the tape cassette 71 is mounted on the movable chassis 1, one end of the front lid 79 of the opening/closing lid 78 in one left and right direction is pushed upward by the opening pin 37, and the front lid 79 and the front lid 79 are pushed upward by the opening pin 37. The interlocked rear lid 80 is rotated in the direction of arrow f in FIG. 2A to open the front opening 75, and the opening height regulating member 12 is moved from the bottom opening 76 of the tape cassette 71 to the front opening 75. It is inserted at a deep position inside the tape 73 that is stretched along the tape 73. Then, the rear lid 80, which is rotated in the direction of the arrow f to be opened and becomes approximately horizontal at the lower position of the front lid 79, is placed approximately horizontally on the opening height regulating pin 15 of the opening height regulating member 12. After that, the opening height of the lid 80 is restricted to _H2 . The opening height _H2 is the height of the insertion portion of the rotary head drum 18 that is inserted into the front opening 75 of the tape cassette 71 and is close to the tape cassette 71, as will be described later.
It is set higher than _H3 .

Also, by mounting the tape cassette 71 on the movable chassis 1, the tape loading means 27a, 27b, the tension detection pin 51, the tape pull-out pin 54, and the pinch roller 55 move the tape 73 from the bottom opening 77 of the tape cassette 71. It is inserted at a position on the inside and in front of the opening height regulating member 12.

At this time, since the tape cassette 71 is safely mounted on the movable chassis 1 at a position spaced a sufficient distance _l2 from the rotary head drum 18, when the tape cassette 71 is mounted, the tape cassette 71
Opening/closing lid 78 (both front and rear lids 79, 80) and tape 7
There is no danger that the rotary head drum 18 (in particular, the upper drum 18a, which is a rotary drum) may accidentally come into contact with the rotary head drum 18 and damage each other.

Next, the tape loading operation is performed after the above-mentioned cassette loading is completed, and the moving chassis 1 is
It is moved horizontally in the direction of arrow c from the backward movement position shown in Figures A and 2A to the forward movement position shown in Figures 1B and 2B.

Then, the tape cassette 71 is moved along with both reel stands 3a and 3b in the direction of arrow c by this moving chassis 1, and as shown in FIGS. 1B and 2B, both reel stands 3a and 3b and the rotating head drum 1 are moved together.
8 is reduced to a small distance _l3 , and the tape cassette 71 is brought closer to the rotary head drum 18.

At this time, as shown in FIGS. 1B and 2B, a part of the rotary head drum 18 is inserted into the front opening 75 of the tape cassette 71, and a part of the rotary head drum 18 is positioned below the opening/closing lid 78. until it goes into the lower part of the rear cover 80.
The tape cassette 71 is brought very close to the rotating head drum 18.

However, at this time, as shown in FIG. 2A, the rear lid 80 of the opening/closing lid 78 is inserted into the front opening 75 of the tape cassette 71 by the opening height regulating pin 15 of the opening height regulating member 12. The opening height of the lid 80 is regulated to H ₂ which is higher than the height H ₃ of the insertion part of the rotating head drum 18.
There is no risk that the rotary head drum 18 (in particular, the upper drum 18a, which is a rotary drum) may accidentally come into contact with the rotary head drum 18 and damage each other.

At this time, in particular, as shown in FIG. 1B, the opening height regulating pin 15 of the opening height regulating member 12 is located on one side of the circumferential surface of the rotary head drum 18 in the moving direction of the movable chassis 1. It is constructed so as to be brought close to the rotary head drum 18 to a position where it overlaps a portion of the rotary head drum 18 by a width of ₁₅ minutes in the direction of arrow c. As a result, the height of the rear cover 80 is restricted to the rotary head drum 18 at a position where it overlaps the rotary head drum 18 by a width of _l5 , and then the lid 80 accidentally comes into contact with the rotary head drum 18. There is no longer any danger of being exposed.

Note that a part of the circumferential surface of the rotary head drum 18 inserted into the front opening 75 of the tape cassette 71 is attached to the tape 73 that is linearly stretched between the tape guides 77 as shown by the dashed line in FIG. 1B. be contacted.

Incidentally, both guide rails 9a and 9b are also moved together with the movable chassis 1 in the direction of arrow c, and these guide rails 9a and 9b are brought close to both sides of the rotating head drum 18 as shown in FIG. 1B. The tips 10a of both the guide grooves 10 of 9a and 9b are the guide positioning bases 46a and 46.
They are respectively connected to the tips 47a of both guide grooves 47 of b.

On the other hand, as the movable chassis 1 moves in the direction of arrow c, both tape loading means 27a, 27b
are moved horizontally in the direction of arrow e from the backward movement position shown in FIGS. 1A and 2A to the forward movement position shown in FIGS. 1B and 2B, which are positions near both sides of the rotary head drum 18, respectively. That is, both tape loading means 27a, 27b are connected to both guide rails 9a, 9b which are moved in the direction of arrow c together with the movable chassis 1.
The upper part is guided by both guide grooves 10 and moved in the direction of arrow e. When both tape loading means 27a, 27b reach the forward movement position, these moving blocks 28 are transferred from both guide rails 9a, 9b onto both guide positioning bases 46a, 46b, and each forward movement is performed. positioned in position. Note that both tape loading means 27 are positioned after reaching the forward movement position.
Both rotation guides 29 a and 27b are vertical, but
Both inclined guides 30 are inclined at predetermined angles with respect to the rotary head drum 18, respectively. In addition, at this time, since both guide rails 9a and 9b are molded from synthetic resin and have a lower coefficient of friction than metal, both tape loading means 27a and 27b are moved on both guide rails 9a and 9b with low torque. The motor can be moved extremely smoothly and the motor can be made smaller.

Both tape loading means 27a, 2
The tape 73 in the tape cassette 71 is guided through the front opening 75 by the two leading vertical guides 29 of the tape cassette 71.
1B and 2B, and is loaded onto the circumferential surface of the rotary head drum 18, which is inclined as shown in FIGS. 1B and 2B, in a helical state having a predetermined winding angle in an approximately M shape. At this time, both inclined guides 3 of both tape loading means 27a, 27b
0 regulates the winding angle and helical angle of the tape 73 on the rotary head drum 18, and both rotary guides 30 serve as guides for horizontally folding the tape 73 between the rotary head drum 18 and the tape cassette 71. Also, at this time, the arrow c of the moving chassis 1
In synchronization with the movement in the direction, the tension detection pin 5
1. The tape pull-out pin 54 and the pinch roller 55 are each driven and moved from the backward movement position shown in FIG. 1A to the forward movement position shown in FIG. 1B. It is passed to axis 62.
With the above steps, a series of tape loading operations is completed. Also, during this tape loading, the reel 72b on which the tape cassette 71 is normally wound is
The tape 73 is fed out from the side.

Next, after the above-mentioned tape loading is completed, the tape 73 is pressed onto the capstan 62 by the pinch roller 55 as shown in FIG.
The upper drum 1 of the rotating head drum 18 is run at a constant speed on the loading path in order to be wound up on the upper drum 1 of the rotating head drum 18.
Recording and reproduction are performed by rotation of 8a. During this recording and playback, tension detection pin 5
1 detects the tension of the tape 73, the braking force of the band brake of the supply reel stand 3a is automatically adjusted, and the back tension of the tape 73 is maintained constant. Also, during recording, playback, and fast forwarding, the reel stand drive mechanism 64 rotates the reel stand 3b to be wound.
At the time of rewinding, the supply reel stand 3a is rotationally driven.

Note that the tape unloading operation is performed by the reverse operation of the tape loading operation described above, but both tape loading means 27a, 27
b transfers from the guide positioning bases 46a, 46b to the guide rails 9a, 9b, the movable chassis 1 moves from the forward movement position shown in Figs. 1B and 2B to the return movement shown in Figs. 1A and 2A. arrow b to position
is configured to be moved in the direction.

Then, the tape cassette 71 is moved along with both reel stands 3a and 3b in the direction of arrow b by the moving chassis 1, and the tape cassette 71 is again moved a sufficient distance l from the rotating head drum 18 as shown in FIGS. 1A and 2B. separated by ₂ . Then, both tape loading means 27a, 27b, tension detection pin 51, tape pull-out pin 54, and pinch roll 55 are respectively moved back to the return position shown in FIG. 1A, completing a series of tape unloading operations. When unloading this tape,
The reel stand drive mechanism 64 rotates the take-up reel stand 3b with low torque, and the tape 73 is rotated on the take-up reel 72.
b and is pulled back into the tape cassette 71.

Although the embodiments of the present invention have been described above, the present invention is not limited to the embodiments, and various effective changes can be made based on the technical idea of the present invention.

For example, in the embodiment, the opening/closing lid 78 of the tape cassette 71 has been shown to have a front/back (inside/outside) double lid structure with a front lid 79 and a rear lid 80. It's okay.

Moreover, the opening height regulating member 12 referred to in the present invention may be a pin-shaped body including only the opening height regulating pin 15. However, as shown in the embodiment, this opening height regulating member 12 also serves as a drum protection plate 14, and this drum protection plate 14 covers the entire surface of the rotating head drum 18 as shown in FIGS. 1A and 2A. If the tape cassette 71 is not installed, the tape cassette 71 can be removed by mischief.
Even if a long object is inserted from the direction of arrow h in FIG. 2A, the drum protection plate 14 catches the long object so that the rotary head drum 18 is not damaged by the long object. 18 can be safely protected.

Further, the present invention is not limited to an 8 mm video camera integrated type, but can be applied to various other cassette type recording and reproducing apparatuses.

H. Effects of the invention The present invention allows the tape cassette to be installed in a safe position sufficiently far away from the rotating head drum when the cassette is installed. There is no risk of the tape or the like accidentally coming into contact with the rotating head drum and damaging each other.

Then, with the rotating head drum fixed,
Since the loaded tape cassette is moved along with the pair of left and right reel stands by a moving chassis and brought close to the rotating head drum, the safety of tape running and the accuracy of recording and playback are extremely high. The distance between the rotary head drum and the rotary head drum can be greatly reduced.

Moreover, when the tape cassette is brought close to the rotating head drum, the rotating head drum can be safely inserted into the lower position of the tape cassette opening/closing lid without any danger of the opening/closing lid of the tape cassette coming into contact with the rotating head drum. As a result, the tape cassette can be brought safely and widely close to the rotating head drum, and the entire cassette type recording/reproducing apparatus can be made extremely small, and it is extremely safe.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIGS. 1A and 1B are plan views of the main parts, and FIGS.
Figures A and 2B are side views of essential parts, Figure 3 is a perspective view of the movable chassis, and Figure 4 is a partial sectional view of the tape cassette. In addition, in the symbols used in the drawings, 1... moving chassis, 12... lid opening height regulating member, 17... fixed chassis, 18... rotating head drum, 27...
a, 27b... tape loading means, 71...
...Tape cassette, 72a, 72b...Reel,
73... tape, 75... front opening, 78... opening/closing lid.

Claims (1)

[Scope of Claim for Utility Model Registration] A fixed chassis with a rotating head drum attached to the top, a pair of left and right reel stands attached to the top, and a double-motion position where the pair of left and right reel stands are separated from the rotating head drum, and the rotating head drum. A movable chassis that reciprocates on a fixed chassis between a forward position and a forward position located close to the chassis, and an upper and lower chassis in which the tape is wound on a pair of left and right reels and stored inside, and which opens and closes a front opening for drawing out the tape. It is equipped with a rotatable lid that can be opened and closed.
a tape cassette that is mounted from above on the movable chassis that is being moved back to the return position, and in which the pair of left and right reels are engaged with the pair of left and right reel stands; The tape cassette is mounted on the movable chassis from above, and is relatively inserted from below into a deep position inside the tape stretched along the front opening, so that the opening/closing lid can be opened and closed. an opening height regulating member that rides on the upper part to open the lid and supports the opening/closing lid from below; A drive means for bringing the tape cassette close to the rotary head drum; and a tape loading means for pulling out the tape in the tape cassette brought close to the rotary head drum and loading it onto the rotary head drum; A member is configured to support the opening/closing lid at a position higher than the height of the portion of the rotating head drum adjacent to the tape cassette, and the portion of the rotating head drum adjacent to the opening/closing lid is moved to a lower position of the opened opening/closing lid. A cassette-type recording/reproducing device configured such that the tape cassette is brought close to the rotating head drum to a position where the tape cassette is inserted into the rotating head drum.