JP2000306291A - Recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a supporting means capable of any of three kinds of cassette tapes L, M and S. SOLUTION: This device is provided with a pair of positioning support pins 69 for positioning cassette tapes L, M and S and supporting the front face side of the cassette tape S, a pair of low support pins 71 for supporting the front face sides of the cassette tapes L and M, and a low fixed support pin 74 for supporting and positioning the backside of the cassette tape L, these pins being erected on a substrate 15. The device is also provided with a high movable support pin 70 for supporting the backside of the cassette tape S, and a low movable support pin 72 for supporting the backside of the cassette tape M, these pins being erected on a slide base 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus, which can perform recording / reproducing with cassette tapes of three kinds of sizes L, M and S.

[0002]

2. Description of the Related Art A magnetic recording / reproducing apparatus, which is one of recording / reproducing apparatuses, has a structure for recording and reproducing images and sounds on a magnetic tape as a recording medium. There are two types of large and small L and S cassette tapes in the cassette tape wound with the tape, and a large recording / reproducing apparatus must be carried to carry out recording on the L cassette tape. On the other hand, in order to record on the S cassette tape, a small recording / reproducing apparatus may be carried, but the recording time is short. Since both have advantages and disadvantages, the size of the cassette tape is selected as needed.

On the other hand, a stationary recording / reproducing apparatus which does not need to be carried needs to be able to use a cassette tape of any size. For this reason, recording / reproducing that can selectively record / reproduce the cassette tape of either L or S
A playback device is provided.

The cassette tape is constructed by winding the tape around a pair of reels, and the size of the main body, the pitch between the pair of reels, and the position of the reel unlocking hole are different for each of the L and S cassette tapes.

In the conventional recording / reproducing apparatus, a plurality of pins are erected on a substrate so as to be able to support any of the cassette tapes, and a supporting means is formed. The type of the cassette tape mounted on the supporting means is different. A release pin projecting upward is provided at the position of the reel lock release hole occupying the position to constitute a reel lock release means, and a pair of reel bases that can approach and separate from each other are provided with the reel pitch in the L and S cassette tapes. The reel base unit is configured to be stoppable at two coincident positions.

An MIC terminal block is provided for contacting a memory in the cassette provided on the back surface of the cassette tape and extracting information of the cassette tape. The MIC terminal block is provided in accordance with the size of the L and S cassette tapes. MIC
The terminal block was also moved and stopped at two positions.

[0007]

However, there is a demand for a recording / reproducing apparatus which can use three types of cassette tapes including an M cassette tape having an intermediate size between L and S, and a pair of cassette tapes. Since a configuration in which a pair of reel bases is slid so as to match the reel pitch is involved, a configuration for supporting three types of cassette tapes involves difficulty.

Therefore, an object of the present invention is to provide a recording / reproducing apparatus which solves the above problem.

[0009]

According to a first aspect of the present invention, there is provided a recording / reproducing apparatus comprising large, medium, and small cassette tapes having different sizes. The tapes have the same thickness and the small cassette tape can support a tape having a smaller thickness than the large and medium cassette tapes, and the pitches of the pair of reels of the large, medium and small cassette tapes match. In a recording / reproducing apparatus provided with a pair of slide bases having a slide and a reel base, a pair of positioning holes are formed at the same interval on the lower surface on the front side of large, medium and small cassette tapes, respectively. A large-diameter portion for escape is formed only around the positioning hole of the cassette tape inside, and a positioning portion to be fitted into each of the positioning holes and a front surface of the small cassette tape are formed on the substrate. A pair of positioning support pins having a high-level supporting portion that abuts on and supports the lower surface of the cassette tape; large and medium cassette tapes are provided on both sides of the pair of positioning support pins on the substrate; A low support pin of a low level that abuts against and supports the lower surface on the front side of the slide base is provided to support the lower surface on the rear side of the small cassette tape on each of the slide bases. The high movable support pins set to the high level height and the low movable support pins provided to support the lower surface on the back side of the middle cassette tape and set to the low level height are respectively set up. On the substrate, a pair of low fixed support pins of the low level is provided to support the lower surface on the back side of the large cassette tape. Is the pair of highly movable Characterized in that a recess to avoid interference with lifting pins.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the recording / reproducing apparatus according to the present invention will be described in detail. First, the structure of the cassette tape will be briefly described, and then the recording / reproducing apparatus will be described.

As shown in FIGS. 1 and 23, the recording / reproducing apparatus is roughly divided into a recording / reproducing section 1 for recording / reproducing and a cassette tape being transported from a cassette tape insertion / removal position to a recording / reproduction position. Therefore, the recording / reproducing unit 1 and the transporting unit 2 are broadly divided, and each unit is described in further detail. A. Cassette Tape The present invention is characterized in that any of L, M, and S cassette tapes having different sizes can be used. First, the cassette tape will be briefly described.

FIGS. 3 and 4 show L, M, and S cassette tapes. In each of the cassette tapes, 6a is a supply reel, 6b is a take-up reel, 6c is a lid that can be opened and closed, and 6d is a cassette memory. The thickness of the main body is L, M while the thickness of the S cassette tape 5 is t _1.
The thickness of the cassette tape 3 and 4 are thicker a t _2. As shown in FIGS. 3A, 3B, and 3C, a pair of positioning holes 6e are formed on the lower surface on the back side of the main body at the same pitch P at symmetrical positions with respect to the center line. I have. B. Recording / Reproducing Unit The recording / reproducing unit 1 locks the reel of the cassette tape by supporting means 7 for supporting the cassette tape and the cassette tape being mounted on the supporting means 7 as shown in FIGS. The reel lock release unit 8 to be released and a pair of reel bases fitted into the reels of the cassette tape are slid so as to match the pitch between the reels of the cassette tapes L, M, and S to the L position, the M position, and the S position. An MIC (Memory in Cassette) for contacting the reel base unit 9 to be set and the in-cassette memory 6d of the cassette tape and extracting information of the cassette tape
e) MIC interlocking unit 10 for moving the terminal block in conjunction with the reel base, stopper unit 11 for stopping the reel base and the MIC terminal block at the middle position M, and recording the tape in the cassette tape.・
A loading unit 12 for performing loading and unloading on a head drum for reproduction;
It comprises a tension regulator 13 for adjusting the tension of the loaded tape and a capstan unit 14 for applying a feeding force to the loaded tape. (A) Reel base unit 9 The reel base unit 9 is a substrate 1 in the recording / reproducing unit 1.
5 is provided over the upper and lower surfaces. As shown in FIGS. 5 to 7, a slide base 16 for mounting a reel base is provided.
Are provided in a "C" shape having an angle of about 90 degrees with each other. That is, in the present embodiment, a round rod-shaped guide rod 17 is attached to the upper surface of the substrate 15 as each guide means.
Each guide rod 17 has a slide base 1.
6 is slidably mounted. That is, a guide hole is formed on one side of the slide base 16 as shown in FIG. 15B, and a guide rod 17 is inserted into the guide hole. On the other hand, as shown in FIG. 2, both ends of a holding member 18 shown in FIG. 8 are attached to the other side of the slide base 16 via screws.
8b is inserted into a space 18a between the presser fitting 18 and the substrate 15 shown in FIG. When the spring receiving portion 16a of the slide base 16 comes to a position corresponding to the L, M, S positions on the lower surface of the guide fitting 18, it projects downward at three positions so as to urge the spring receiving portion 16a downward. A leaf spring 19 is attached.

As shown in FIG. 1, reel bases 21 are mounted on the slide base 16 via reel motors 20, respectively.

As shown in FIG. 2, a slit 15a is formed below the range in which the slide base 16 slides to restrict the slide range of the slide base 16 by cutting out a part of the substrate 15. As shown in FIG. A portion of the slide base 16 where the guide hole is formed is shown in FIG.
0, as shown in FIG. 15 (b), constitutes a rectangular parallelepiped contact portion 16b projecting downward, and the contact portion 16b is formed by the slit 1
It is inside 5a.

Next, the pair of slide bases 16
Will be described to increase or decrease the pitch between the pair of reel bases 21. As shown in FIG. 5, a plate 22 is provided on the lower surface of the substrate 15 so as to be slidable along a straight line M that bisects the angle formed by the pair of guide rods 17. That is, three guide holes 22 a parallel to the straight line M are formed in the plate 22, and headed rivets 23 inserted in the respective guide holes 22 a are fixed to the lower surface of the substrate 15. A pair of long holes 22 are formed on the left and right sides of the plate 22 along a straight line perpendicular to the straight line M.
The engagement pins 24 projecting downward from the respective slide bases 16 through the slits 15a are loosely fitted in the elongated holes 22b.

The shape of the elongated hole 22b will be described below. In order to accurately position the pair of slide bases 16 at the M and S positions as shown in FIGS. 7 and 6, the plate 22 is constantly moved upward in FIGS. Pressed. At this time, when the left slide base 16 in the figure occupies the M and S positions, the engagement pin 2
The position of No. 4 is shown as M and S in FIG. At the position M in FIG. 9, when the pressing force applied from the plate 22 to the engaging pin 24 when the angle of the elongated hole 22b is θ ₁ is F, the component force is a force pressing the slide base 16 against a stopper described later. and F _1, can be decomposed into a force F ₂ to the engaging pin 24 is to get away along the long hole 22b, the sliding direction perpendicular component of the slide base 16 of the F ₂ component force F Assuming that the distance between the plate 22 and the guide rod 17 is H in FIG. 9B, F ₃ H is a moment M about the guide rod 17 as the center of the slide base 1.
6, the spring receiving portion 16a of the slide base 16 tends to float.

The inclination of the long hole 22b is represented by K (= 43.1893).
9), the direction of the elongated hole 22b and the direction in which the slide base 16 slides are substantially perpendicular to each other, so that the slide base 16 does not float. However, the elongated hole 22b in FIG.
Since the length of b in the left-right direction is substantially determined, the value of θ ₂ is also K
It is almost the same size as. According to experiments, the value of θ ₂ is 1
Since it is known that the slide base 16 does not slide at an angle of 5 degrees or more, in the present invention, θ ₁ = 10.2 is set so that the value of θ ₁ approaches the value of K and becomes 15 degrees or less.
Degrees, θ ₂ = 9.6 degrees. The lifting of the slide base 16 is most remarkable when the engaging pin 24 is at the position of M, but when the shape of the long hole 22b is as shown in FIG.
The flying height is 0.5 mm or less and the levitation force is less than ten gf or less, and it is sufficiently possible to maintain the spring receiving portion 16a of the reel base 21 at a safe height.

A means for reciprocatingly sliding the plate 22 along the straight line M is linked to the plate 22. A lever 26 is provided on the lower surface of the substrate 15 so as to be rotatable about a fixed shaft 25 fixed to the substrate 15.
a, 26b and 26c are provided respectively. Slot 26a
, The fixed shaft 25 is inserted, and the fixed shaft 25 is provided with a retaining ring. A press-contact means is provided in order to accurately position the pair of slide bases 16 in a state where the contact portion 16b projecting downward from the slide base 16 is pressed against the inner surface of the slit 15a.
As shown in FIG. 5, a spring receiving plate 27 is attached to the upper surface of the base end of the lever 26. A pair of bifurcated spring hooks 27a are formed on the spring receiving plate 27, and a spring 28 is mounted between the tips of the pair of spring hooks 27a. A pin 29 which is fixed to the center end of the plate 22 and protrudes downward from the substrate 15 is inserted into the elongated hole 26b of the intermediate portion of the lever 26, and a retaining ring is attached to the pin 29.

On the upper surface of the substrate 15, a slide motor 30 is provided.
Is mounted, and its output shaft protrudes below the substrate 15. A pinion gear 31 is attached to the output shaft. On the lower surface of the substrate 15, a gear having teeth 32 and 33 engaged with the pinion gear 31, a gear 3
3, a gear having teeth 34 and teeth 35 meshing with the teeth 3, a gear having teeth 36 and 37 meshing with the teeth 35, and a gear 38 meshing with the teeth 37 are rotatably provided. . In order to stop the gear 38 every time it rotates 120 degrees, the tooth portion 37 and the gear 38 adopt a general bath top configuration. That is, a single circular arc portion 37a is formed on the tooth portion 37, while three fin portions 38a, 38b, 38c are formed on the gear 38 at equal intervals in the circumferential direction. A pin 39 projecting downward is attached near the outer peripheral surface of the gear 38, and this pin 39 is attached to the substrate 1.
5 is inserted into the long hole 26c of the lever 26 below.

To stop the rotation of the slide motor 30 and electrically stop the slide base 16 when the pair of slide bases 16 reach the L, M and S positions, the gear 3
8, a reflector is attached to the upper surface of the tooth portion 36, and a photo interrupter is attached to the lower surface of the substrate 15. (B) MIC interlocking unit An MIC terminal block that holds a contact switch that electrically contacts and identifies the memory 6d in the cassette provided on the back of the cassette tape when the reel base fits into the reel of the cassette tape. The MIC interlocking unit 10 provided as described above and for interlocking the MIC terminal block with the slide base will be described.

As shown in FIG. 10, both ends of the rail member 40 are fixed to the upper surface of the board 15 via two screws, and the rail member 40 has a cam 40a having a cam shape substantially parallel to one guide rod 17. Are formed. In order to hold the MIC terminal block 41 shown in FIGS. 1 and 2, a block base 42 is provided, and a pair of sliding pins 43 are embedded in the block base 42 so as to protrude downward.
The retaining rings 3 and 43 are inserted into the grooves 40a, and the lower ends of the sliding pins 43 are directly fitted with retaining rings. When the pair of sliding pins 43 slide along the groove 40a, the block table 42 slides along the groove 40a in a state parallel to the rear surface of the cassette tape placed on the reel table 21.

Next, means for linking the block base 42 with the slide of the slide base 16 will be described. As shown in FIG. 10, a base end of a resin arm 45 is rotatably provided on a support column 44 erected on the upper surface of the substrate 15, and is retained by a retaining ring. A long hole 45 a is formed on the tip end side of the resin arm 45 along a straight line passing through the support column 44. The lower end of the other sliding pin 43 is inserted into the long hole 45a, and a retaining ring is attached to the sliding pin 43.

A concave portion is formed on the lower surface of the resin arm 45, so that a heli 45b having a constant thickness is formed between the concave portion and the side surface. The pair of slide bases 16
One of the extension portions 16 extends downward in FIG.
c is provided, and a pair of holding pins 46 projecting upward are provided upright on the extension 16c. And
One of the holding pins 46 enters the concave portion on the lower surface of the resin arm 45, in other words, the helicopter 45b of the resin arm 45 is sandwiched between the pair of holding pins 46, and the resin arm 45 rotates following the slide base 16. It is supposed to. When the slide base 16 stops at the three positions of L, M, and S, the pressure contact spring 48 is attached between the resin arm 42 and the mounting table 47 to press the block table 42 in a predetermined direction. Have been. (C) Stopper Unit Next, the stopper unit 11 for mechanically stopping the pair of slide bases 16 and the block base 42 in the reel base unit 9 at the M position which is an intermediate position between the L position and the S position. Will be described. As shown in FIG. 13, an operation mechanism of a stopper 49 as a first stopper for stopping the reel base 21 is disposed below the substrate 15, and a second stopper for stopping the block base 42 above the substrate 15. The stopper 49 and the stop lever 50 are interlockingly connected to a plunger 51 as a driving means provided below the substrate 15. The details will be described below.

As shown in FIG. 13, a mounting table 52 is mounted on the plunger 51 via screws, and the mounting table 52 is mounted on the lower surface of the substrate 15 via screws. A plate 55 is provided between the mounting table 52 and the substrate 15 so as to be reciprocally movable in a vertical direction in the figure by a pair of guide pins 53 and a pair of guide holes 54. The plate 55 has a pair of long holes 55a and a single pin 55b projecting upward.
Are formed. The iron core of the plunger 51 is linked to the plate 55.

The plate 55 which is interlocked with the plunger 51
Is linked to the stopper 49 as follows. A substantially C-shaped C-shaped arm 5 is provided on both sides of the plunger 51.
6 and 56 are rotatably supported via pins 57 and retaining rings implanted downward from the substrate 15. C
The arms 56, 56 have mutually symmetrical shapes, and pins 58 implanted downward at both ends of the C-arms 56, 56 are loosely fitted into the long holes 55a, 55a of the plate 55. . A stopper 4 is provided at the other end of each of the C-shaped arms 56 and 56.
9, 49 are attached respectively. That is, it is as follows. A pin 59 projecting upward is implanted at the other end of the C-shaped arm 56, and a stopper 49 is rotatably provided on the pin 59 while being urged in the direction of the arrow by a spring 60. Is attached. A slit 49a is formed in the stopper 49 to restrict the rotation range of the stopper 49, while the C-arm 5
6, a bending projection 56a is formed, and the bending projection 56a is loosely fitted in the slit 49a. This pair of stoppers 4
Numeral 9 enters the inside of the slit 15a formed in the substrate 15, and moves back and forth on the track of the contact portion 16b.

The plate 55 linked to the plunger 51 is linked to the stop lever 50 on the upper surface of the substrate 15 as follows. As shown in FIG. 13, a substantially intermediate portion of a link 61 having a complicated shape is rotatably supported via a pin 62 formed so as to protrude downward from the substrate 15 and a retaining ring. A long hole 61a is formed at one end of the link 61, and a pin 55b projecting upward from the plate 55 of the plunger 51 is loosely fitted. A wide wide hole 61b is formed at the other end. As shown in FIG. 14, a resin penetrating shaft 63 which rotatably penetrates the substrate 15 from bottom to top and has a lever portion 63a on the lower surface side is provided, and a pipe member 64a is fixed to a tip end of the holding shaft. The portion of the pipe material 64 a in the metal fitting 64 is
The base end of the holding metal fitting 64 is connected to the lower surface of the substrate 15 via a screw in a state where the holding metal fitting is inserted into the inside of the through shaft 63 from below the base 5. A pin 63b projecting downward is fixed to the tip of the lever portion 63a, and the pin 63b is loosely fitted in the wide elongated hole 61b. This lever 63
A spring 65 is mounted between the tip of the “a” and the holding member 64.

A stop lever 50 is provided on the upper surface of the substrate 15.
Is provided, and a shaft portion 50a integrally provided at a base end portion of the stop lever 50 is provided with a pipe member 64a in the through shaft 63.
It is inserted inside. On the end face on the upper surface side of the through shaft 63, three claw portions 63c and a protrusion 63d for performing relative positioning between the through shaft 63 and the stop lever 50 are formed, and the three claw portions 63c are formed. While the base end of the stop lever 50 enters the inside and the protrusion 63d fits into the hole 50b, a retaining ring is attached to the tip of the shaft 50a protruding downward from the holding bracket 64.
A pin receiving portion 50c is formed on the base end side of the stop lever 50, and a long pin 66 and a short pin 67 projecting upward are erected on the distal end side. On the upper surface of the substrate 15, a stopper pin 68 is provided upright as a restraining member that abuts against the pin receiving portion 50c of the stop lever 50 to restrain the rotation of the stop lever 50. After the stop lever 50 is rotated as shown in FIG. 12 by the action of the plunger 51, the urging force of the spring 48 acts to bring the stop lever 50 into contact with the stopper pin 68, and then the block base 42 moves together with the slide base 16. By moving and abutting on the long pin 66 and being supported by the short pin 67, the block base 42 can be stopped at a position corresponding to the M position. That is, the position at which the block base 42 stops is determined by the position of the stopper pin 68 and the distance between the pin receiving portion 50c of the stop lever 50 and the long pin 66. (D) Supporting Means Next, the supporting means 7 for supporting the L, M, and S cassette tapes on the substrate 15 will be described.

As shown in FIGS. 15 to 17, a pair of positioning support pins 69 are provided upright at the center of the substrate 15.
The interval between the pair of positioning support pins 69 is set to be equal to the pitch P between the pair of positioning holes 6e in the L, M, and S cassette tapes 3, 4, and 5. Each positioning support pin 69 is formed in a tapered portion 69a as a positioning portion for positioning the cassette tape by being inserted into the positioning hole 6e, and is formed stepwise on the outer periphery below the tapered portion 69a. And a support portion 69b for supporting the lower surface of the tape 5.

The height of the support portion 69b is the height of the lower surface of the S cassette tape 5, and the height of the L, M cassette tapes 3, 4
Is formed with a large diameter portion 6f to escape so that the support portion 69b of the positioning support pin 69 does not contact the lower surfaces of the L and M cassette tapes. This is because the heights of the lower surfaces of the L, M and S cassette tapes are set to S so that the tape widths of the L, M and S cassette tapes are the same and the centers of the tapes coincide.
Set lower than the height of the lower surface of the cassette tape.
The upper surfaces of the M and S cassette tapes have substantially the same height. Here, for convenience of explanation, the height of the lower surface of the S cassette tape is called a high level, and the height of the lower surface of the L and M cassette tapes is called a low level. The support part 6
The height of 9b is a high level.

Since the front side of the S cassette tape is positioned and supported by the pair of positioning support pins 69, as shown in FIG. 15, a pair of high movable support pins 70 for supporting the left and right sides of the rear side are provided. The slide bases 16 are provided upright. The high movable support pin 70 is set at a high level.

Next, in order to support the front sides of the L and M cassette tapes, a pair of low support pins 71 are provided on both sides of the pair of positioning support pins 69 as shown in FIGS.
Are erected on the substrate 15. This low support pin 71 is
It is arranged at a position that does not interfere with the cassette tape, and is set at a low level.

As shown in FIG. 16, low movable support pins 72 for supporting the rear side of the M cassette tape are also provided upright on each of the pair of slide bases 16.
The low movable support pins 72 are arranged in the supportable range of the M cassette tape 4 and are set at a low level. In order to prevent the high movable support pin 70 from interfering with the lower surface of the M cassette tape 4 when the slide base 15 occupies the M position, a hole 6n as a concave portion is formed on the lower surface of the M cassette tape 4. I have.

Finally, as shown in FIG. 17, the low fixed support pins 7 are used to support the left and right sides of the rear side of the L cassette tape.
4 stands on the substrate 15. As in the case of the positioning support pin 69, the low fixed support pin 74 includes a tapered portion 74a and a stepped support portion 74b as well as the positioning support pin 69 in order to perform accurate positioning when the L cassette tape is lowered. It is configured. The height of the support portion 74b is set to a low level. On the other hand, a concave portion 6g into which the tapered portion 74a enters is formed on the left and right sides on the back side of the L cassette tape 3. A release hole 6h for releasing the reel lock is provided on each of the reels. This is because when the cassette tape is not placed on the support means 7, the reel is locked by a reel lock means (not shown) in order to prevent the tape from sagging, and the reel lock is released during recording / reproduction. This is provided because it is necessary to do so.
A reel lock release unit 8 is provided to release the reel lock.

As shown in FIGS. 15 to 17, when the cassette tapes 3, 4, and 5 of L, M, and S are mounted on the support means 7, the release hole 6h for releasing the reel lock is occupied by L release. A pin 75, an M release pin 76, and an S release pin 77 are arranged. As shown in FIGS. 18 to 20, the L release pin 75 is fixed to a mount 47 slightly lower than the low level fixed on the substrate 15. A fixed shaft 78 is fixed below the mount 47. A base end of a first lever 79 is rotatably connected to the fixed shaft 78, and an S release pin 77 projecting upward is fixed to a tip of the first lever 79. The base end of the second lever 80 is also rotatably connected to the fixed shaft 78, and an M release pin 76 projecting upward is fixed to the tip of the second lever 80. L, M, S
Since the release pins 75, 76 and 77 are arranged on the same straight line, the first lever 79 is L-shaped. The first and second levers 79 and 80 can rotate only downward,
Springs 81 and 82 are provided as urging means for urging the second levers 79 and 80 upward. And
The mounting base 47 also serves as a stopper for stopping the rotation of the first and second levers 79 and 80 at the position where the first and second levers 79 and 80 are in the horizontal state.

A third lever 83 is disposed adjacent to the second lever 80, and a base end thereof is rotatably supported by a fixed shaft 78. The third lever 83 is also provided with a spring 84 as an urging means for urging upward, and the mounting base 47 also serves as a stopper. A base end of an arm 85 is rotatably attached to a distal end of the third lever 83 via a shaft 86, and a guide roller 88 is rotatably supported on a distal end of the arm 85 via a shaft 87. The arm 85 and the guide roller 88 are formed of resin, and an arm 8 is provided between the third lever 83 and the arm 85.
A spring 89 is provided as an urging means for urging the member 5 downward. A stopper portion 83a is formed by bending a part of the third lever 83 at a right angle, while a stopper receiver 85a is provided on the arm 85 for contacting the stopper portion 83a to position the guide roller 88 when not in use. Are formed. Further, the arm 85 pressed by the pressing restraining pin 91 described later is rotated against the urging force of the spring 89 to change the posture to the upright state shown in FIG. 18, and in this state the third lever 83 moves downward. So as to restrain rotation
A receiving portion 85b that receives the tip of the pressing constraint pin 91 is formed. On the other hand, a restraining pin 92 and a pressing restraining pin 91 slightly shorter than the restraining pin 92 are erected on the upper surface of the plate 22 located below the board 15, and formed on the board 15 as shown in FIGS. It protrudes above the substrate 15 through the slit 15b formed. The restraining pin 92 moves together with the plate 22 below the distal ends of the first and second levers 79 and 80 in FIG.
7. Restrict the downward rotation of the M release pin 76. on the other hand,
When the pair of reel bases 21 moves from the position M to the position S
When moving to the position, it moves together with the plate 22 and presses the receiving portion 85b to support the arm 85 upright. (F) Loading Unit, Tension Regulator As shown in FIG. 21, a head drum 93 for recording / reproduction is provided on the back side of the reel base unit 9.
A loading unit 12 for winding a tape around a part of the head drum 93, and a tension regulator 13 for applying an appropriate tension to the loaded tape.
And a capstan unit 14 for feeding the loaded tape at a constant speed.

At the time of unloading, the rollers 94, 95, which are located near the pair of positioning support pins 69, 69 as shown in FIG.
96 and 97 are provided, and these rollers are linked to a loading motor 98 via a gear train. The inclined pins 99 and 100 are fixed to the portions where the rollers 95 and 96 are attached. In addition, rollers 101 and 102 that do not move are provided.

The roller 94 is urged in the direction of the arrow in FIG.
A spring (not shown) for applying tension to i is provided, and constitutes a tension regulator 13. (G) Capstan Unit Lastly, the capstan unit 14 that applies a constant-speed feeding force to the loaded tape will be described. A capstan motor (not shown) is attached to the lower surface of the substrate 15, and a capstan shaft 104 of the capstan motor projects above the substrate 15. A rotatable pinch roller 105 is pressed against the capstan shaft 104.

The structure for pressure contact will be described. As shown in the upper center part of FIG. 1, a column 106 is erected on the substrate 15, and a resin column cam 108 having a gear 107 and a spiral groove is rotatably supported on the column 106. I have. A cylindrical body 109 made of resin and having a projection (not shown) formed in the groove formed on the inner peripheral surface is provided over the cylindrical cam 108. The base end of a fixed arm 110 having a pinch roller 105 attached to the distal end is fixed to the cylindrical body 109, while the movable arm 1 having a long hole 111 at the distal end.
12 is rotatably connected to the base end of the fixed arm 110.
A spring 113 is provided between the movable arm 112 and the movable arm 112. On the other hand, a plunger 114 is mounted on the substrate 15, and a slider 115 that moves when the plunger 114 is turned on and off is provided via a pair of pins 116 so as to be reciprocally movable in the horizontal direction. A pin 117 erected on the slider 115 is loosely fitted in the elongated hole 111. Gear 1 formed on the cylindrical cam 108
Reference numeral 07 is linked to the gear train of the loading unit 12.

C. Cassette Compartment (Transfer Section) The cassette compartment 2 is provided for transferring three types of cassette tapes L, M, and S from the insertion / removal position to the support means 7 at the recording / reproducing position.

As shown in FIGS. 23 and 24, the cassette compartment 2 includes a transfer unit 200 for transferring a cassette tape from an insertion / removal position to a recording / reproducing position, and a cassette holder 2 for transferring a cassette tape with the cassette tape. Insertion guide means 201 for individually guiding the M and S cassette tapes; and lid locks arranged on both sides of the lower surface of the cassette tape so that the lid on the front surface of the cassette tape can be opened when the cassette tape is inserted into the cassette holder. Lid lock release means 202 for pressing the release lever, cassette tape determination means 203 for determining the type of cassette tape when the cassette tape is inserted into the cassette holder, and the cassette tape being securely inserted into the cassette holder Cassette-in detecting means 204 for detecting that the , The cassette holder is constituted by the lid opening and closing means 205 for opening the front lid of the cassette tape when begins to drop from the horizontal movement. Hereinafter, each means will be described.

(A) Transfer Unit First, the transfer unit 200 will be described. As shown in FIG. 24, a main body 206 is constituted by a left side plate 206a, a right side plate 206b, and a ceiling plate 206c, and lower portions of the left side plate 206a and the right side plate 206b are connected via a connecting plate 207. Rails 208 made of resin are attached to lower portions outside the left side plate 206a and the right side plate 206b via screws, respectively, to form a rail portion 208a and a rack portion 208b. Left side plate 206a and right side plate 206b
Is provided with a low-speed plate 209 so as to be movable. That is, the lower portion of the low-speed plate 209 is placed on the rail portion 208a, while the pins 209a,
09b is inserted into guide holes 227 and 211 formed in the left and right side plates 206a and 206b so as to be movable. Then, the rack 2 is placed on the low-speed plate 209 via screws.
12 is attached, and the rack 212
a is formed.

A driving means is provided on the ceiling plate 206c to reciprocate the left and right low speed plates 209 back and forth in synchronization. That is, the transfer motor 213 is attached to the ceiling plate 206c, and in order to transmit the driving force of the transfer motor 213 to the low-speed plate 209, the pinion 214 fixed to the output shaft of the transfer motor 213, the gear 215, and the gear 215 are integrated. A rotating worm 216, a worm wheel 217, a gear 218 integral with the worm wheel 217, and gears 219, 220, 221 are provided.

The left and right side plates 206a, 206b and the low speed plate 20
A high-speed resin plate 222 is provided between the low-speed plate 9 and the second low-speed plate 209 so as to move in the front-rear direction at twice the speed of the low-speed plate 209. A pair of protrusions 222a and 222b projecting laterally from the high-speed plate 222 are provided with guide holes 209 of the low-speed plate 209.
c, 209d, the high-speed plate 222 is guided. A gear 223 that rolls on the rack 208b as the low-speed plate 209 moves is rotatably supported inside the low-speed plate 209, and a rack 222c that meshes with the upper portion of the gear 223.
Are formed downward on the high-speed plate 222. In other words, when the low-speed plate 209 moves and the gear 223 attached to the low-speed plate 209 rolls on the rack 208b, the gear 223
The high-speed plate 222 having the rack portion 222c meshing with the low-speed plate 209 moves at twice the speed of the low-speed plate 209.

Inside the main body 206, there are provided cassette holders for holding three types of cassette tapes of L, M and S.

The cassette holder 224 includes an upper holder 224a made of a metal plate and a spring 226 made of resin.
Holder 224b urged toward upper holder 224a by
And a front lid 224c. Front lid 224c
Is rotatably supported by an upper holder 224a via a shaft 225, and is urged to rotate forward by the urging force of a spring (not shown). The rotation is restricted by contacting a stopper (not shown). On both sides of the upper and lower holders 224a and 224b, a pair of guide rollers 228 and 229 rotatable via pins are provided, respectively.
L-shaped guide holes 211 and 210 formed in 206b
And are loosely fitted in inclined grooves 222d and 222e formed in the high-speed plates 222 and 222, respectively. In a state where the guide rollers 228 and 229 are loosely fitted to the upper portions of the inclined grooves 222d and 222e in the high-speed plate 222,
Since the inclined grooves 222d and 222e are formed so as to be inclined so as to return when the second member 2 moves to the back side, the guide rollers 228 and 229 move horizontally along the horizontal portions of the guide holes 211 and 210 and then move vertically. Descend along the part.
At this time, the three types of cassette tapes L, M and S are mounted on the support means 7. In other words, the guide rollers 228 and 229 are located at the upper part in the inclined grooves 222d and 222e and move rearward along the horizontal portions in the guide grooves 211 and 210, and then are further inclined.
When e moves horizontally, the fixed guide holes 211 and 21 are fixed.
It will move downward along the intersection of 0 and the inclined grooves 222d and 222e that move horizontally.

The cassette holder 224 has an insertion / removal position for inserting / removing a cassette tape and a recording / reproducing device for performing recording / reproduction.
A gear 221 is used to stop the cassette tape at the bending position where the cassette holder 224 is stopped at the reproduction position or at the bending position where the cassette holder 224 changes from horizontal movement to vertical movement when the pitch change between the pair of reel stands is not completed. A photo-interrupter is provided on the ceiling plate 206c below the mirror 221. A reflection plate is adhered to the lower surface of the gear 221 to control ON / OFF of the transfer motor 213.

(B) Insertion Guide Means Next, the insertion guide means 201 will be described. FIG.
As shown in FIG. 5, shafts 230 and 231 extending in the left-right direction are supported on the connecting plate 207. The shafts 230 and 231 have a guide member 232 for guiding the S cassette tape and a guide member 233 for guiding the M cassette tape. Are rotatably provided. Guide portions 232a, 233a are formed on the respective guide members 232, 233, and the guide portions 232
guide members 232, 2 only in the direction in which
33 are provided rotatably, and guide portions 232a and 233 are provided.
A spring 234 that urges the guide members 232 and 233 in the direction in which a rises is provided.

(C) Lid unlocking means Next, the lid unlocking means 202 will be described with reference to FIG. Lower holder 22 in cassette holder 224
On both sides of 4b, resin rotary tables 235 and 236 for pressing the lid unlock levers 6j disposed on both sides of the lower surface of the cassette tape are rotatably supported via shafts 237 and 238. Since the turntable is provided at symmetrical positions on the left and right sides of the lower holder 244b, only the left side will be described. The turntables 235 and 236 include the turntable 23.
A spring (not shown) is provided for urging the inside of 5, 236 upward, and a stopper (not shown) for stopping the rotation when the inside is slightly lifted is provided by a rotating table 23.
5 and 236, a stopper receiving portion (not shown) is formed on the lower holder 224b. Turntable 235
A guide portion 235a for guiding the lower ends of both sides of the S cassette tape and a release protrusion 235b for pressing the lid lock release lever 6j of the S cassette tape are provided on the upper inside surface of the.
Are formed. On the other hand, a guide portion 236a for the M cassette tape and a release protrusion 236b are formed on the inner upper surface of the rotating table 236, and a release protrusion 236c for the L cassette tape is formed on the outer upper surface. There is no guide portion for the L cassette tape because the lower holder 224b
Is to act as a guide portion.

(D) Cassette tape discriminating means Next, the cassette tape discriminating means 203 will be described. As shown in FIG. 24, a micro switch 253 for determining the L cassette tape is provided at an upper portion on the front right side of the upper holder 224a, and a lever 237 for pressing the micro switch 253 is rotatably provided on the shaft 225. And the lever end 237a projects downward (see FIG. 28). Further, a spring 238 for urging the lever end 237a downward is provided. On the other hand, a microswitch 254 for judging the M cassette tape is similarly provided in the upper portion on the front left side of the upper holder 224a. 239 is a lever, 239a is a lever end (see FIG. 28), and 240 is a spring. Front lid 2
A slit is formed in the front lid 224c so as not to interfere with the lever ends 237a and 239a when the lever 24c is closed.

(E) Cassette-in detection means Next, the cassette-in detection means will be described with reference to FIG. On the back side of the lower left surface of the lower holder 224b, a lever 242 to which a reflection plate 241 is attached is rotatably mounted via a pin 243 in order to detect that the left side of the cassette tape is securely inserted into the cassette holder 224. The lower holder 2 is attached with the contact portion 242a at the tip of the lever 242.
Projecting above 24b. And this lever 24
A spring 244 for urging the front surface 2 is provided. The lower holder 224b that the reflector 241 covers when the contact portion 242a is pushed to the rear side by the cassette tape.
A photo-interrupter 245 is attached to the lower surface of the. As shown in FIG. 4, the pressing portions 6k of the cassette tape which press the contact portions 242a of the levers 242 are formed at equal distances to the right from the center lines of the L, M and S cassette tapes. ing.

On the other hand, on the back side of the lower right surface of the lower holder 224b, a reflection plate 246 is provided to detect that the right side of the cassette tape has been securely inserted into the cassette holder 224.
Is attached rotatably via a pin 248, and the contact portions 247a, 247b, 247c formed integrally with the lever 247 are attached to the lower holder 224b.
Projecting upward. A spring 249 for urging the lever 247 forward is provided. Holder 22
Abutment 247a from the center of the 4, 247b, distance to 247c is, L shown in FIG. 4, M, a distance L _1, L _2, L ₃ from the center line of the S cassette tape to the pressing portion 6m of the left Yes, it is.

The cassette tape is brought into contact with the abutting portion 247a so that not only that the right side of the cassette tape is cassette-in but also the type of the cassette tape into which the cassette is inserted can be determined.
Three photo-interrupters 250a, 250b, 250c are attached at positions on the lower surface of the lower holder 224b that are to be covered by the reflection plate 246 when 〜247c is pushed to the rear side.

(F) Lid Opening / Closing Means Finally, the lid opening / closing means 205 will be described with reference to FIG. On the back side of the lower holder 224b in the cassette holder 224, a lid opener 251 is provided with a pair of pins 25.
2, and is urged downward via a spring (not shown). Lid opener 25
In 1, the rotation is restricted by a pair of stopper portions (not shown) formed at the lower left and right portions abutting on the lower holder 224 b. As shown in FIG. 30, an inclined tapered surface 255 is formed in the lower portion on the right back side of the lid opener 251, while the cassette holder 224 moves backward and descends inside the right side plate 206 b of the main body 206 on the back side. In order to rotate the lid opener 251 upward against the biasing force of the spring by pressing the tapered surface 255, as shown in FIGS.
6 is attached. At the tip of the pressing member 256,
An arc portion that contacts the tapered surface 255 is formed. Then, when the lid opener 251 rotates upward,
The lid 6 is engaged with the lower surface of the lid 6c of the cassette tape.
c to open the lid opener 25.
1 is provided on the lower right side of the device 1 so as to protrude toward the front side.

D. Operation of Cassette Compartment (a) Insertion from Insertion Guide As shown in FIG. 28, a cassette tape is inserted into the cassette holder 224 from the insertion / removal position of the cassette compartment 2. At this time, the S cassette tape 5 is guided by a pair of guide portions 232a shown in FIG. 25, and the M cassette tape 4 pushes down the pair of guide portions 232a against the urging force of the spring 234 and guides the pair of guide portions 233a. The L cassette tape 3 is guided by the guide portions 232a and 232a.
33a and the left side plate 206 of the main body 206.
a, Guided and inserted into the right side plate 206b.

When the cassette tape is inserted into the cassette holder 224, the inserted cassette tapes are L, M, S
In each case, the L, M, and S cassette tapes 3, 4, and 5 guided by the side surface of the lower holder 224b, the guide portion 236a, and the guide portion 235a are provided with the release protrusion portions 236c and 2c.
The lid lock release lever 6j is operated by 36b and 235b.
Is pressed, so that the lid 6c can be opened and closed.

(B) Discrimination of cassette tape The type of the cassette tape is determined when the cassette tape is inserted into the cassette holder 224.
3 detects this. That is, in the case where the cassette tapes are L and M, respectively, since the L and M cassette tapes 3 and 4 individually press the upper lever portions 237a and 239a of the cassette holder 224 shown in FIG. Micro switches 253 and 254 are pressed and detected,
In the case of S, it is not detected.

(C) Detection of cassette-in The cassette tape is inserted into the cassette holder 224 as shown in FIG.
The cassette-in detecting means 204 shown in FIG. 26 detects that the cartridge has been inserted into the cassette holder 224 and has been securely inserted into the cassette holder 224. That is, cassette tapes 3, 4, 4 of L, M, S
The fact that the left side of 5 is securely inserted is detected by the single photo-interrupter 245 and the reflector 241. Here, the contact portion 2 of the lever 242 to which the reflection plate 241 is attached
Reference numeral 42a is pressed by the pressing portion 6k located at an equal distance from the center line of the L, M, S cassette tapes 3, 4, and 5. On the other hand, the fact that the right side of the cassette tape was securely inserted indicates that the three photo interrupters 250a to 250a
0c and the reflection plate 246. Here, the three contact portions 24 of the lever 247 to which the reflection plate 246 is attached
7a, 247b, and 247c are pressed by the pressing portions 6m located at different distances from the center lines of the L, M, and S cassette tapes 3, 4, and 5. The L, M, and S cassette tapes are detected by detecting only the photointerrupter 250a with the reflection plate 246 in the case of the S cassette tape 5,
In the case of the M cassette tape 4, the photo interrupter 250
In the case of the L cassette tape 3, this is performed by covering all of the photo interrupters 250a, 250b, and 250c.

(D) Transfer of the cassette tape When the type of the cassette tape and the secure insertion of the cassette tape are detected by the cassette tape discriminating means 203 and the cassette-in detecting means 204, a pair of the transfer unit 200 for transferring the cassette tape is provided. The reel base unit 9 that increases or decreases the pitch of the reel base starts moving at the same time.

First, the transfer of the cassette tape by the transfer unit 200 will be described. When the transfer motor 213 rotates, its rotational force is transmitted to the pair of left and right racks 212 via a plurality of gears, and each low-speed plate 209 moves to the rear side along the rail portion 208a at a low speed. The gear 223 on 209 is the rack 2 on the rail 208
08b, the high-speed plate 222 having the rack 222c meshing with the gear 223 moves rearward at twice the speed of the low-speed plate 209, and moves twice as far as the low-speed plate 209. . The guide rollers 228 and 229 of the cassette holder 224 move from the position of FIG. 29 to the position of FIG. 30 along the horizontal portions of the guide holes 211 and 210 while occupying the upper ends of the inclined grooves 222d and 222e. With the horizontal movement of 222d and 222e, it is pushed down to the position of FIG. 31 along the vertical portions of the guide holes 211 and 210.

When the cassette holder 224 descends, the lid opening / closing means 205 operates. That is, since the cassette holder 224 descends after the tip of the pressing member 256 contacts the tapered surface 255 of the lid opener 251 as shown in FIG. 30, the lid shown in FIG. The opener 251 is relatively rotated upward, and the engaging portion 251a of the lid opener 251 engages with the lid 6c of the cassette tape to open the lid 6c upward. When the cassette holder 224 is lowered to the lower end as shown in FIG. 31, the transfer motor 213 is stopped by the action of the above-described photo interrupter or the like.

E. Operation of Recording / Reproducing Unit (a) Setting of Reel Base The reel base unit 9 is operated by signals from the cassette tape discriminating means 203 and the cassette-in detecting means 204.

[0062] The pair of reel bases 21 is
In order to set the L position for receiving the reels 6a and 6b, the following is performed. In FIG. 5, when the output shaft of the slide motor 30 on the upper surface of the substrate 15 rotates, the rotational force is applied to the pinion 31, the tooth 32, and the tooth 3 on the lower surface of the substrate 15.
3, transmitted to the gear 38 via the tooth portion 34, the tooth portion 35, the tooth portion 36, and the tooth portion 37. When the gear 38 rotates in the direction of arrow A1, the lever 26 rotates in the direction of arrow A2 about the fixed shaft 25, and the plate 22 connected via the pin 29 moves in the direction of arrow A3. The slide base 16 on the upper surface of the substrate 15 is provided with an engagement pin 24 projecting to the lower surface of the substrate 15 through the slit 15b of the substrate 15, and the engagement pin 24 is inserted into the long hole 22b of the plate 22. Since they are loosely fitted, the pair of slide bases 16 on the upper surface of the substrate 15 slide along the guide rods 17 in the direction of arrow A4. After the rectangular parallelepiped contact portion 16b protruding from the lower surface of the slide base 16 abuts on the inner surface of the slit 15a in the substrate 15 (see FIG. 10), the gear 38 turns slightly to form an arc portion forming the general bus stop. 37a and the fin 38a engage with each other, so that the lever 2
6 is pushed in the direction of arrow A5 together with one spring hooking portion 27a, and the other spring hooking portion 27a is stopped by the fixed shaft 25. As a result, the press contact spring 28 is extended. In this state, the rotation of the slide motor 30 is stopped by the action of the photo interrupter or the like. Pressure spring 2
8, the contact portion 16b of the slide base 16 is pressed against the substrate 15, so that the pair of reel bases 2
1 exactly holds the L position.

At this time, the block base 42 holding the MIC terminal block 41 is movable along the groove 40a as shown in FIG. 10, and is rotated while being sandwiched between a pair of holding pins 46 of one slide base 16. At the L position, it is located at one end of the groove 40a and is urged by the spring 48 in the direction of arrow A6.

Next, in order to set the pair of reel stands 21 to the S position for receiving the reels 6a and 6b of the S cassette tape 5, the following is performed. When the gear 38 is rotated in the B1 direction by the slide motor 30 as shown in FIG.
The lever 26 rotates about the fixed shaft 25 in the direction of arrow B2, and the plate 22 moves in the direction of arrow B3. Then, the slide base 16 slides in the direction of arrow B4. Then, the contact portion 1 of the slide base 16 is
After the gear 6b comes into contact with the inner surface of the slit 15a,
Turns a little and the arc part 37a and the fin 3 of the general bus top
8c, the base end of the lever 26 is pushed in the direction of arrow B5 together with one spring hook 27a, and the other spring hook 27a is stopped by the fixed shaft 25. As a result, the press-contact spring 28 is extended. It is. By the action of the pressure contact spring 28, the contact portion 16b is pressed against the inner surface of the slit 15a and in the opposite direction (see FIG. 11), and the pair of reel bases 21 can accurately set the S position. Hold.

At this time, as shown in FIG. 11, the block base 42 for holding the MIC terminal block 41 is
6 and is located at the other end of the groove 40a.
8 is urged in the direction of arrow B6.

Finally, in order to set the pair of reel bases 21 to the M position for receiving the reels 6a and 6b of the M cassette tape 4, the following is performed. First, the pair of slide bases 16 are once moved to the L position. Next, FIG.
The plunger 5 attached to the lower surface of the substrate 15
1 is excited. Then, the plate 55 connected to the iron core via the connection fitting moves in the arrow C1 direction. Then
The tip ends of the pair of C-shaped arms 56 are rotated inward in the direction of arrow C2, and the pair of stoppers 49 occupying the position of FIG. 10 is opposed to the guide rod 17 in the slit 15a of the substrate 15. Then, it enters on the track (position in FIG. 12) on which the contact portion 16b of the slide base 16 moves.

On the other hand, when the plate 51 is moved in the direction of the arrow C1 as described above in FIG. 13, the pins 61b are loosely fitted in the long holes 61a. Since the pin 63b is loosely fitted in the wide elongated hole 61b, the penetrating shaft 63 having the lever portion 63a rotates in the direction of arrow C4 against the urging force of the spring 65. Then, the stop lever 50 on the upper surface of the substrate 15 rotates in the direction of arrow C5 to enter the track of the block table 42 and stops near the stopper pin 68 on the substrate 15 as shown in FIG.

As described above, after the pair of stoppers 49 and the stop lever 50 have entered the orbit, the slide motor 30 is moved from the L position as in the case of the S position.
Rotates. Then, as shown in FIG.
6 comes into contact with the slit 15 via the stopper 49
After contact with the inner surface of the a, the gear 38 turns slightly and the arc portion 37a of the general bus stop is turned on as shown in FIG.
And the fins 38b are engaged with each other, so that the base end of the lever 26 is pushed in the direction of arrow B5 together with the one spring hooking portion 27a, and the other spring hooking portion 27a is stopped by the fixed shaft 25.
As a result, the press contact spring 28 is extended. That is, the contact portion 16b is pressed against the inner surface of the slit 15a via the stopper 49 by the action of the pressure contact spring 28, and the pair of reel stands 21 accurately holds the M position.

At this time, as shown in FIG. 12, the block base 42 for holding the MIC terminal block 41 is
6 and moves in the direction of arrow B6, but comes into contact with the long pin 66 at the tip of the stop lever 50 and the short pin 67
Supported by Then, the block base 42 is urged by the spring 48 in the direction of arrow B6 to push the stop lever 50, and the MIC terminal block 41 is accurately positioned with the stop lever 50 in contact with the stopper pin 68.

The setting from the M position to the S position is performed by setting the L position once, releasing the excitation of the plunger 51, and setting the stopper 4
9 and the stop lever 50 are withdrawn from the track.

(B) Supporting the cassette tape and releasing the reel lock After the pair of reel bases has been set at the L, M, and S positions as described above, the cassette holder 224 moves the cassette compartment 2 inside as described above. At the same time, the cassette tape descends, is supported by the support means 7, and the reel lock is released by the reel lock release means 8.

The L, M, and S cassette tapes are positioned by inserting the tapered portions 69a of the positioning support pins 69 into the positioning holes 6e as shown in FIGS.

The S cassette tape 5 has a pair of high movable support pins 70 when the reel base 21 is at the S position as shown in FIG.
And the supporting portion 69b of the positioning support pin 69. At this time, since the plate 22 moves to the position shown in FIG. 18 in response to the movement of the reel base 21 to the S position, the tip of the pressing restraining pin 91 on the plate 22 presses the receiving portion 85 b of the arm 85. The arm 85 is turned against the urging force of the spring 89 to
5 is supported by the pressing restraining pin 91 so as not to move downward. Further, a restraining pin 92 is located below the first lever 79. When the S-cassette tape 5 descends to the recording / reproducing position, the S-cassette tape 5 is guided by the guide rollers 88, and when descending, the MIC terminal block 41 comes into contact with the in-cassette memory 6d. Then, the S release pin 77 on the first lever 79 whose downward rotation has been restrained by the restraining pin 92 enters the reel lock release hole 6h to release the reel lock.

As shown in FIG. 16, the M cassette tape 4 is supported by four pins, a pair of low movable support pins 72 and a pair of low support pins 71 when the reel base 21 is at the M position. At this time, the high movable support pin 70 enters the hole 6n formed on the lower surface of the M cassette tape 4 and escapes, and the support portion 69b of the positioning support pin 69 moves to the large diameter portion 6f of the positioning hole 6e in the M cassette tape 4. Enter and escape. Since the plate 22 occupies the position shown in FIG. 19, when the M cassette tape 4 descends to the recording / reproducing position, the first and third levers 79 and 83 are pushed by the M cassette tape 4 and rotate downward, Since only the second lever 80 is restrained from rotating by the restraining pin 92, the M release pin 76 enters the reel lock release hole 6h to release the reel lock.

As shown in FIG. 17, the L cassette tape 3 includes a pair of low support pins 71 and a pair of low fixed support pins 74.
Is supported by the four pins of the supporting portion 74b. At this time, the high movable support pins 70 and the low movable support pins 72 enter the ring-shaped recesses formed on the lower surfaces of the reels 6a and 6b of the L cassette tape 3 and escape, and the support portions 69b of the positioning support pins 69 are connected to the L cassette. The tape 3 enters the large diameter portion 6f of the positioning hole 6e in the tape 3 and escapes. And plate 2
20, the first, second and third levers 79, 80 and 83 are pushed by the L cassette tape 3 and turned downward when the L cassette tape 3 descends to the recording / reproducing position. Then, the L release pin 75 enters the reel lock release hole 6h to release the reel lock.

(C) Loading Since the operations of loading and recording / reproducing are the same for the three types of cassette tapes, the description will be made using the L cassette tape 3.

Upon detecting that the L cassette tape 3 is supported at the recording / reproducing position, the loading motor 98 rotates. Then, the rollers 94, 95, 96, 97 driven via the gear train in FIG.
From the position inside the tape 6i to the position shown in FIG. As a result, the reel base 21 rotates, and the tape 6i is rewound.
Is wound around a part of the tape 6i. The gear 1 of FIG. 1 in which the rotational motion of the loading motor 98 meshes with the gear train.
07 to the cylindrical cam 108 and the cylindrical cam 108
Cylindrical body 109 having a projection in a spiral groove
Descends. Thereafter, the plunger 114 is excited,
Pinch roller 105 via slider 115, pin 117, movable arm 112, spring 113, and fixed arm 110
Is pressed against the capstan shaft 104. By the loading, the urging force of a spring (not shown) is applied to the tape 6i via the roller 94, and the tension of the tape 6i is adjusted to be constant.

When the loading is completed, the capstan motor and the reel motor 20 rotate simultaneously, and the tape 6i wound on the supply-side reel 6a becomes the reel 6 on the take-up side.
b. As a result, video and audio are recorded or reproduced on the tape 6i.

F. Removing the cassette tape To remove the cassette tape, press the eject button (not shown). Then, first, unloading is performed. The excitation of the plunger 114 is released, and the pinch roller 105 is separated from the capstan shaft 104. Next, the loading motor 98 rotates in the opposite direction. Then, contrary to the loading, the rollers 94, 9
At the same time as 5, 96 and 97 return to the positions shown in FIG. 21, the pinch roller 105 moves up. At this time, the tape 6i that slacked
The reel 6 is driven by the rotation of the reel motor 20.
a and 6b.

After detecting that the tape 6i has been wound on the reels 6a and 6b, the cassette compartment 2
The upper transfer motor 213 rotates in the opposite direction, and the cassette tape is transferred from the recording / reproducing position to the insertion / removal position in the opposite direction.

In this embodiment, the tapered portion for positioning is provided on the pair of low fixed support pins for supporting the lower surface on the back side of the large cassette tape, but the tapered portion is not always required.

[0082]

As can be seen from the above description, claim 1
According to the recording / reproducing apparatus of the present invention, a pair of common positioning support pins for inserting into the positioning holes on the front side of the large, medium and small cassette tapes are erected on the substrate, and the front side of the small cassette tapes is A supporting portion for supporting is provided by being stepped on the outer peripheral portion of the positioning support pin, and a pair of low support pins for supporting the front side of the large and middle cassette tapes is mounted on the substrate at a position sandwiching the pair of positioning support pins. While installing
Low and high movable support pins for supporting the rear side of the small cassette tape are erected on each slide base, and a pair of low fixed support pins for supporting the rear side of the large cassette tape are erected on the substrate. On the lower surface of the cassette tape, there is provided a recess for escape to prevent the high movable support pin on the slide base from interfering, and a large diameter portion for escape to prevent the support of the positioning support pin from interfering. Because it was provided, large, medium,
Small cassette tapes can be reliably supported.

[Brief description of the drawings]

FIG. 1 is a perspective view of a recording / reproducing unit according to an embodiment of a recording / reproducing apparatus according to the present invention.

FIG. 2 is a plan view of a recording / reproducing unit according to the embodiment of the recording / reproducing apparatus according to the present invention.

FIG. 3 is a rear view of the L, M, S cassette tape according to the cassette tape;

FIG. 4 is a front view of L, M, and S cassette tapes related to the cassette tape;

FIG. 5 is a configuration diagram showing a state of an L position in the recording / reproducing unit regarding a reel base unit.

FIG. 6 is a configuration diagram showing a state of an S position in the reel base unit in the recording / reproducing unit.

FIG. 7 is a configuration diagram showing a state at an M position in a recording / reproducing unit relating to a reel base unit.

FIG. 8A is a plan view of a press fitting, and FIG. 8B is a front view of the press fitting, relating to a reel base unit in the recording / reproducing section.

FIG. 9 relates to a reel unit in the recording / reproducing unit, and FIG. 9 (a) is an explanatory diagram showing a relationship between a long hole and an engagement pin;
(B) is an explanatory view showing that a moment is applied to the slide rail.

FIG. 10 is a configuration diagram showing a state of an L position in the MIC interlocking unit in the recording / reproducing unit.

FIG. 11 is a configuration diagram showing a state of an S position in the MIC interlocking unit in the recording / reproducing unit.

FIG. 12 is a configuration diagram showing a state of an M position in the MIC interlocking unit in the recording / reproducing unit.

FIG. 13 is an overall configuration diagram of a stopper unit in a recording / reproducing unit.

14A is an assembly view of a main part, and FIG. 14B is an exploded perspective view of a stopper unit in the recording / reproducing unit.

FIG. 15A is a plan view and FIG. 15B is a front view of a state in which the support means and the reel lock release unit in the recording / reproducing unit are in the S position.

16A is a plan view and FIG. 16B is a front view of the recording / reproducing unit in a state in which a support means and a reel unlocking unit are at a position M. FIG.

17A is a plan view and FIG. 17B is a front view of a state in which a support unit and a reel unlocking unit in a recording / reproducing unit are at an L position.

18A is an explanatory diagram of a guide state of an S cassette tape, and FIG. 18B is an explanatory diagram of a reel unlocked state, in relation to the state of the reel unlocking unit in the recording / reproducing section at the S position.

FIG. 19 is an explanatory diagram of a reel unlocked state in relation to a state at a position M of a reel unlocking unit in the recording / reproducing unit.

FIG. 20 is an explanatory diagram of a reel unlocked state in a state where the reel unlocking unit in the recording / reproducing unit is at an L position.

FIG. 21 is a plan view of the loading / unloading unit in the recording / reproducing unit in an unloaded state.

FIG. 22 is a plan view showing a loading state of a loading unit and the like in the recording / reproducing unit.

FIG. 23 is a perspective view of a transfer unit (cassette compartment).

FIG. 24 is an exploded perspective view of a transfer unit.

FIG. 25 is a plan view showing an insertion guide unit and a reel unlocking unit in the transfer unit.

FIG. 26 is a plan view showing cassette discriminating means and cassette-in detecting means in the transfer section.

FIG. 27 is a plan view of a transfer unit (cassette compartment).

FIG. 28 is an operation explanatory view of a transfer unit in a transfer unit before a cassette tape is inserted into an insertion / removal position.

FIG. 29 is an explanatory diagram of an operation when a cassette tape is inserted into a cassette holder in the transfer unit in the transfer unit.

FIG. 30 is an operation explanatory view of a state in which the cassette tape starts to descend according to the transfer unit in the transfer unit.

FIG. 31 is an operation explanatory view of a state in which the cassette tape is lowered to the recording / reproducing position in the transfer unit in the transfer unit.

[Explanation of symbols]

 3 L cassette tape 4 M cassette tape 5 S cassette tape 6a, 6b Reel 6e Positioning hole 6f Large diameter portion 6n Hole 16 Slide base 21 Reel base 69 Positioning support pin 69a Tapered portion 69b ... Supporting part 70 ... High movable supporting pin 71 ... Low supporting pin 72 ... Low movable supporting pin 74 ... Low fixed supporting pin 74b ... Supporting part

Claims (1)

[Claims] 1. Large, medium, and small cassette tapes having different sizes, wherein the large and middle cassette tapes have the same thickness, and the small cassette tape has a smaller thickness than the large and middle cassette tapes. And a pair of slide bases having a pair of reel bases that slide to match the pitch of the pair of reels of the large, medium, and small cassette tapes. A pair of positioning holes are formed at equal intervals on the lower surface on the front side of the small cassette tape, and a large-diameter portion for escape is formed only around the positioning holes of the large and medium cassette tapes. A pair of positioning supports each having a positioning portion fitted into each of the positioning holes and a high-level supporting portion for supporting and supporting the lower surface on the front side of the small cassette tape. Provided upright down, on both sides of the pair of positioning support pins on said substrate,
A low support pin having a low level is provided to abut against and support the lower surface on the front side of the large and medium cassette tapes. Each of the slide bases supports the lower surface on the rear side of the small cassette tape. And a high movable support pin set at the high level and a low level set at the low level and provided to support the lower surface on the back side of the middle cassette tape. And a pair of low-fixed support pins having the low level for supporting the lower surface of the back side of the large cassette tape. A recording / reproducing apparatus, wherein a concave portion is formed on a lower surface of the middle cassette tape to avoid interference between the pair of high movable support pins.