JP2638169B2 - Cassette mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in the following order.

A. Industrial application fields B. Summary of the invention C. Conventional technology D. Problems to be solved by the invention E. Means to solve the problems F. Function G. Embodiment G _1. Schematic configuration of device main body G _2. Configuration of cassette guide mechanism G _3. Configuration of first cassette holder and its driving mechanism G _4. Configuration of second cassette holder and its driving mechanism G _5. Configuration of lid opening and closing mechanism G ₄ . H. Effects of the Invention A. Industrial Field of the Invention The present invention relates to a cassette mounting device used for a front-loading cassette type video tape recorder (VTR) and the like. The present invention relates to a cassette mounting device that can be selectively used.

B. Summary of the Invention The present invention relates to a cassette mounting apparatus which can load and unload cassettes by using various kinds of cassettes having different sizes and by using a cassette holder for holding the cassettes. An apparatus main body having a cassette insertion slot into which any one of various types of cassettes having different sizes is inserted, and a cassette which faces the cassette insertion slot and guides each cassette to a cassette holder which holds the above cassettes A pair of left and right guide members for rotatably supporting the cassette guide mechanism via a shaft provided between both sides of the apparatus main body, and for guiding the cassettes to the cassette holder. And rotating in conjunction with the rotation of each of the guide members located on the left and right opposite sides behind the pair of guide members. By rotating the cassette, a pair of stopper members are provided so as to be able to protrude and retract from the cassette insertion slot, so that erroneous insertion of each cassette into the cassette insertion slot can be reliably prevented. Can be reliably inserted into a predetermined position.

C. Prior Art For example, Japanese Patent Application Laid-Open No. 60-76049 discloses a cassette mounting device. This will be described in detail with reference to FIGS. 13 to 18. Reference numeral 100 denotes a cassette mounting device applied to a front loading type cassette type video tape recorder. The cassette mounting device 100 includes an apparatus main body 101.
Cassettes C ₁ , C ₂ , C ₃ of different sizes (large, medium, small cassettes C ₁ , C ₂ , C ₃ are collectively referred to as each cassette C) are inserted into the upper part of the front face 101 a of the cassette It has a cassette insertion slot 102. A cassette holder 103 that holds one of the cassettes C inserted through the cassette insertion opening 102 faces the cassette insertion opening 102. The cassette holder 103 is formed in a substantially letter shape with a bottom portion 103a and both side portions 103b, 103b, and a pair of rack plates 104, 104 are fixed to the both side portions 103b, 103b. The lower corners of the pair of rack plates 104 near the cassette insertion opening 102 form an L-shaped rack 104a, and guide rollers 105, 105, 105 project from the remaining three corners. Each guide roller 105 projecting from each rack plate 104
Are formed on both sides 101b, 101b of the apparatus main body 101.
The book is inserted into the inverted L-shaped guide grooves 101c, 101c, 101c. Also, each rack portion 104 of the pair of rack plates 104, 104
a meshes with a pair of pinions 107, 107 rotated by a motor 106. As a result, the cassette holder 103
Are reciprocally movable in the horizontal and vertical directions along the guide grooves 101c of the side portions 101b, 101b, and the cassettes C are inserted from the cassette insertion slot 102 into a pair of reel bases (a cassette mounting position). (Not shown) can be loaded and unloaded.

In addition, as shown in FIGS.
On the back side of the bottom 103a of the 103, there is provided a cassette reciprocating mechanism 110 for transporting the medium and small cassettes C ₂ , C ₃ to a pair of stoppers 103c, 103c protruding from the tip of the cassette holder 103. . The cassette reciprocating mechanism 110 has a pair of support plates 111 and 112 fixed to the distal end side and the base end side of the back surface of the bottom 103a of the cassette holder 103, and extends between the pair of support plates 111 and 112 to penetrate. Screw screw 113
And a pair of guide shafts 114, 114, and these screw screws 1
13 and a movable table 115 which is screwed to the pair of guide shafts 114 and 114 and moves in the front-rear direction.
A pair of locking pins 117, 117 urged upward and movable up and down by the elastic force of
And a motor 119 that rotates through the gears 8 and the like.
The pair of locking pins 117, 117 protrude from the pair of long holes 103d, 103d formed in the front-rear direction between the distal end and the base end of the bottom 103a of the cassette holder 103, to the upper surface of the bottom 103a. The bottom portion the pair of engaging pins 117, 117 projecting from the upper surface of 103a has become disengageably in the above, the engaging hole a formed in the bottom portion of the small cassette C _2, C _3.

Then, when mounting the large cassette C ₁ to a pair of reel base of the cassette mounting device 100, inserting the large cassette C ₁ into the cassette insertion slot 102 of the apparatus main body 101. Then, the large cassette is detected by the sensor 120 provided in the cassette holder 103.
With the magnitude of C ₁ is determined, the front face of the large cassette C ₁ is detected to have been inserted to a predetermined position of the cassette holder 103 by the sensor 120. Based on the discrimination of the size of the cassette, the distance between the pair of reel bases is large and the cassette C ₁
It is automatically adjusted according to the size of. The pair of stopper portions 103c of the cassette holder 103, that the sensor 121 provided on the 103c side front face of the large cassette C ₁ has the pair of stopper portions 103c, is brought into contact 103c by cassette insertion completed Is detected. At this time, the pair of engaging pins 117, 117 of the cassette reciprocating mechanism 110 is lowered by being pushed to the bottom of the large cassette C _1. After that, the cassette holder 103 is moved horizontally and downward movement to the pair of reel mount on along each guide groove 101c by the motor 106, the large cassette C ₁ is loaded into the pair of reel blocks Be attached. Incidentally, unloading of the large cassette C ₁ is adapted to be effected by the reverse operation of the loading.

Also, as shown in FIG.
When the middle cassette C ₂ or the small cassette C ₃ is inserted into the cassette holder 103, the sensor 122 or the sensor 123 provided on the cassette holder 103 is inserted.
The insertion with the magnitude of the middle cassette C ₂ or small cassette C ₃ is determined, the front surface of the middle cassette C ₂ or small cassette C ₃ by the sensor 122 or sensor 123 to a predetermined position of the cassette holder 103 Is detected. Together is automatically adjusted according to the size of the pair of cassette middle interval of the reel base is C ₂ or small cassette C ₃ based on the determination size of the cassette, a pair of locking pins of the cassette reciprocating mechanism 110 117, 117 are engaged with the engaging hole a of the middle cassette C _2, or the small cassette C _3. The middle cassette C ₂ or the small cassette C ₃ is moved to the cassette holder 10 by the pair of locking pins 117, 117.
3 moves on the bottom 103a of the cassette holder 1
It moves until it hits a pair of stopper parts 103c, 103c of 03. Then, the front in said cassette C ₂ or small cassette C ₃ by the sensor 121 is the pair of stopper portions 103c, 103
It is detected that the cassette has been inserted by contacting c. Thereafter, the similar to the cassette loading large cassette C _1, by the cassette holder 103 is moved horizontally and downward movement to the pair of reel mount on along each guide groove 101c by the motor 106, the in cassette C ₂
Or small cassette C ₃ is mounted is loaded in the pair of reel mount.

Incidentally, unloading of the inside the cassette C _2, or the small cassette C ₃ is carried out by a reverse operation of the loading, during cassette ejection, in the above, the small cassette C _2, C ₃ by the cassette reciprocating mechanism 110 Bottom of cassette holder 103
The upper 103a by a predetermined stroke backward, surface position and in the following a major cassette C ₁ during cassette ejection, so that the surface position after the small cassette C _2, C ₃ are aligned. Further, when inserting or ejecting the cassette, the bottom 103 of the cassette holder 103 is inserted.
A guide groove b provided at the center of the bottom of each cassette C is engaged with a guide projection 103e protruding from the center of the upper part a, and is inserted and ejected. The position is always determined.

Problems D. INVENTION However, in the conventional cassette loading apparatus 100, as shown in FIG. 19, for example, the left and right width of the small cassette C ₃ has one side and the guide protrusions 103e of the cassette holder 103 since shorter than the distance, to the left and right ends of the cassette insertion slot 102, the vertical insertion Intention small cassette C ₃ next to the state (indicated by 19 two-dot chain line), the being erroneously inserted There was a disadvantage.

Accordingly, the present invention provides a cassette mounting device that can reliably prevent erroneous insertion of each cassette.

E. Means for Solving the Problems A cassette mounting device of the present invention includes a device main body having a cassette insertion slot into which any one of various types of cassettes having different sizes is inserted, and a cassette facing the cassette insertion slot. A cassette guide mechanism for guiding each cassette to a cassette holder for holding each cassette, wherein the cassette guide mechanism is rotatably supported via a shaft provided between both side portions of the apparatus main body. A pair of guide members for guiding the cassettes to the cassette holder, and by rotating in conjunction with the rotation of the guide members located on the opposite side behind the pair of guide members, the cassette insertion opening is formed. It is composed of a pair of stopper members provided so as to be freely retractable.

F. Function When trying to insert each cassette while leaning to one of the right and left sides of the cassette insertion slot, the front surface of the cassette is pressed against one of the pair of stopper members, so that erroneous insertion of the cassette is reliably prevented.

G. Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

G _1. Schematic Configuration of Apparatus Main Body In FIG. 1, reference numeral 1 denotes a cassette mounting apparatus applied to a front-loading cassette type video tape recorder. The apparatus main body 2 of the cassette mounting apparatus 1 includes:
A rectangular plate-shaped chassis 3 and a pair of left and right side plates (side portions) 4, 4 vertically fixed from both ends of the chassis 3;
And a front plate 5 bridged and fixed between the front ends of the pair of side plates 4 and 4, and a top plate 6 bridged and fixed between the upper ends of the pair of side plates 4 and 4. Is configured.

At predetermined positions of the pair of side plates 4, 4 of the apparatus main body 2, three substantially L-shaped guide grooves (guide portions) 4a, 4b, 4c each including a horizontal portion (front plate 5 side) and a vertical portion are provided. They are formed symmetrically. Above the front plate 5 of the apparatus main body 2, three types of cassettes C ₁ , C ₂ , C 3 of different sizes are provided.
₃ (These large, medium, and small cassettes C ₁ , C ₂ , and C ₃ are
The cassette insertion port 7 for inserting and discharging the cassette is formed. Further, a cassette holder 8 for holding each cassette C is provided in a cassette insertion port 7 in the apparatus main body 2.
Has been set up.

G _2. Configuration of Cassette Guide Mechanism A cassette guide mechanism 10 for guiding each cassette C to the cassette holder 8 is provided below the cassette insertion slot 7. In the cassette guide mechanism 10, as shown in FIGS. 1 and 5, each base 12a is rotatably supported via a shaft 11 laid between a pair of side plates 4, 4 of the apparatus main body 2; , A pair of left and right guide members 12, 12 for guiding the middle cassettes C ₁ , C ₂ to the cassette holder 8, and behind (behind) the curved middle cassette guide surface 12 b of the pair of guide members 12, 12. By rotating around the shaft 11 in conjunction with the rotation of each of the guide members 12 located on the opposite sides, a pair of stopper members 13 and 13 provided at the center of the cassette insertion port 7 so as to be freely retractable and It is supported in a freely each base 14a rotates in the shaft 11 between the pair of stopper members 13, 13 is largely constituted by a small cassette C ₃ and a pair of guide members 14, 14 for guiding the cassette holder 8 .

More specifically, the pair of guide members 12, 12 are formed of synthetic resin, and are urged by a spring 15 interposed between the shafts 11 so as to maintain the horizontal state. Shaft 11 by pushing downward by C ₁ and C ₂
It is rotatable downward around the center. The side plate 4 side of the pair of guide members 12 and 12 is a large cassette guide surface 1.
2c, and the small cassette guiding tapered surface 12d is formed on the side of each of the small cassette guiding guide members 14 of the middle cassette guiding surface 12b of the pair of guide members 12, 12.

Further, the pair of stopper members 13, 13 Yes molded with synthetic resin, the front 13a is turned stopper surface in contact with the front surface of the small cassette C _3. As shown in FIG. 5, the right stopper member 13 is connected to the left guide member 12 via the connecting rod 16, and the left stopper member 13 is connected to the right guide member 12 via the connecting rod 17. Connected to Accordingly, the pair of guide members 12, 12 and the pair of stopper members 13, 13 are connected to the cross with each other, for example, the right side of the guide member and the small cassette C ₃ vertically
Although the right guide member 12 and the left stopper member 13 rotate downward in conjunction with each other even when trying to insert the cassette insertion slot 7 from the 12 side, the right stopper member 13 stands up as shown in FIG. since the state of the left, so that the erroneous insertion can not be inserted small cassette C ₃ is prevented.

The pair of guide members 14, 14 for guiding the small cassette are also formed of synthetic resin, respectively, and each have a curved small cassette guide surface 14b. Further, the pair of guide members 14, 14 is energized so as to keep the horizontal position by a spring (not shown) interposed shaft 11 or the like, the shaft by pushing down the small cassette guide surface 14b by the small cassette C ₃ It is rotatable downward around 11.

Further, as shown in FIG.
Two sets of small and medium-sized auxiliary stopper members 18, 18, 19, 19 made of synthetic resin are rotatably supported on the shaft 11 between the shafts 4 and 14. These auxiliary stopper members 18 and 19 are urged by a spring (not shown) interposed between the shaft 11 and the like so as to maintain an upright state, and the pair of small auxiliary stopper members 19 and 19 are connected to a base of a second cassette holder 50 described later. By being pushed by the end 51d, all the auxiliary stopper members 18, 18, 19, 19 can be tilted forward.

G _3. Configuration of First Cassette Holder and Driving Mechanism Thereof The cassette holder 8 is provided on both side plates 4 of the apparatus main body 2.
By reciprocating in the horizontal and vertical directions along each of the L-shaped guide lids 4a, 4b, 4c formed in 4, the pair of reel bases 9, 9 disposed on the chassis 3 A first cassette holder 20 for loading and unloading the cassette C, and each cassette C (large, medium, and small cassettes);
C ₁ , C ₂ , and C ₃ ) and a second cassette holder 50 that can simultaneously reciprocate in the horizontal direction inside the first cassette holder 20 with respect to the movement of the first cassette holder 20. Have been.

The first cassette holder 20 is provided between a pair of outer plates 22 and 22 formed by downwardly bending large cassette receivers 21 projecting horizontally forward and inward, respectively, and a pair of outer plates 22 and 22 extending between the front and rear portions. Delivered and fixed, large and medium cassettes C ₁ and C _{2 in} front
Connecting plate 2 having cassette holding portion 23a for holding the upper surface of
3 and three guide rollers 24, 24, rotatably supported outside the pair of outer plates 22, 22, and inserted into the three guide grooves 4a, 4b, 4c of the both side plates 4, 4. 24, received one large cassette described above by the rotation of the detection lever 25 which projects into a rectangular hole 21a formed in (the left side in the drawing) 21 to determine the insertion of the large cassette C _1, the pair of reel blocks 9, The type sensor 26 is configured to move the 9 to the position of the reels L ₁ and L ₁ of the large cassette C ₁ and match them.

Rollers (not shown) are provided inside the side plates 4, 4 respectively, and the rollers (not shown) abut on the pair of outer plates 22, 22, so that the lower portions of the pair of outer plates 22, 22 are pushed out when the cassette is pushed out. It does not open outward.
The rollers (not shown) are connected to the first cassette holder 20.
It also plays a role of positioning in the width direction when the camera is up (at the time of horizontal movement).

On the inner surface of the right side plate 4 at the cassette insertion port 7 side, the detection lever 27 is pressed and separated from the rib 21b protruding below the other cassette receiver (right side in the drawing) 21 so as to be separated therefrom. A first switch 28 for detecting the up position (horizontal front position) of one cassette holder 20 is provided. further,
The first cassette holder 20 is horizontally moved toward the guide groove 4b on the inner surface of the right side plate 4 by the rotation of a detection lever 29 which rotates backward when the guide roller 24 comes to the corner of the guide groove 4b. A second switch 30 is provided for detecting a position at which the position changes from vertical to vertical movement, and the guide roller 24 comes to the lower end of the vertical portion of the guide groove 4c near the guide groove 4c on the inner surface of the right side plate 4. A third switch 32 is provided for detecting the down position of the first cassette holder 20 by the rotation of the detection lever 31, which sometimes rotates backward.

The first cassette holder 20 includes a first cassette holder 20 disposed between the side plates 4 and 4 of the apparatus main body 2 and the first cassette holder 20.
The cassette holder driving mechanism 40 enables the reciprocating movement in the horizontal and vertical directions along the guide grooves 4a, 4b, 4c of the both side plates 4, 4. This first cassette holder driving mechanism 40
A pair of rack plates 41, 41 fixed to the inner surfaces of the pair of outer plates 22, 22 so as to face each other, and having L-shaped rack portions 41a from the front surface to the lower surface, and a pair of rack plates 41, 41;
A pair of pinions 42, 42 meshed with the respective rack portions 41a and rotatably supported by the side plates 4, 4, and a pair of first intermediate gears 43, 42 are provided on the large diameter portions of the pair of pinions 42, 42. And a pair of second intermediate gears 44, 44 rotatably supported by the side plates 4, 4 and meshed with the second intermediate gear 44 on the right side. Shaft 4 rotatably supported on
A first gear 46 fixed to 5; a driving gear 48 fixed to the left end of the shaft 45 and meshed with the second intermediate gear 44 on the left side via a second gear 47; Fixed,
A worm gear 49b fixed to the rotating shaft 49a is constituted by a motor 49 meshed with the second gear 47.

G _4. Configuration of Second Cassette Holder and Driving Mechanism Thereof The second cassette holder 50 that holds each cassette C is provided within the pair of outer plates 22, 22 of the first cassette holder 20. Are reciprocally movable in the horizontal direction with respect to the first cassette holder 20 along each pair of guide grooves 22a, 22a formed respectively. The main body 51 of the second cassette holder 50 is bridged between a bottom plate portion 51a, both side plate portions 51b, 51b vertically rising from both sides of the bottom plate portion 51a, and upper front portions of the both side plate portions 51b, 51b. The cassette holding plate 51c having a pair of cassette holding rollers 52, 52 is formed in a square tubular shape. The bottom plate portion 51a of the second cassette holder main body 51 is located at the same height as the pair of large cassette receivers 21, 21 of the first cassette holder 20, and has a base end portion 51d provided at the center thereof. A convex guide 53 for preventing incorrect insertion of each cassette C and for positioning in the left-right direction is protruded. At the position of the bottom surface 51a of the second cassette holder body 51 near the left cassette receiver 21, the middle cassette C _{2 is} rotated by the rotation of a detection lever 54 projecting from a rectangular hole 51e formed in the bottom portion 51a. determines the insertion, it is arranged the type sensor 55 to match by moving the pair of reel blocks 9,9 in the position of the reel L _2, L ₂ of the middle cassette C _2. Further, a pair of long holes 51f, 51f are formed at the tip end side of the bottom plate 51a so as to form an inverted C shape. Pins 57, 57 projecting from the tips of a pair of levers 56, 56 pivotally supported on the lower surface of the bottom portion 51a, protrude from the pair of long holes 51f, 51f. At the base of the left lever 56, a loading start switch 58 for starting loading of each cassette C is provided. In addition, a pair of stopper portions 51g, 51g are formed by bending at the tip of the bottom portion 51a. The left lever 56 is a first cassette holder.
The loading start switch 58 can be turned off when each cassette C is ejected by a cassette pushing mechanism (not shown) provided between the cassette holder 20 and the second cassette holder 50.

Further, both side plate portions 51b of the second cassette holder body 51,
51b has a pair of outer plates 22, 22 of the first cassette holder 20.
A pair of guide pins 59, 59 to be inserted into each of the pair of guide grooves 22a, 22a protrude.

The second cassette holder 50 is formed in a pair of guide grooves 22a, 22a of the first cassette holder 20 by a second cassette holder driving mechanism 60 disposed between the first cassette holder 20 and the second cassette holder 50. It is reciprocally movable along. The second cassette holder driving mechanism 60 meshes with a pair of racks 61, 61 fixed to the upper ends of both side plate portions 51b, 51b of the second cassette holder 50, and the pair of racks 61, 61,
A pinion 6 fixed to both sides of a shaft 62 rotatably supported between upper ends of a pair of outer plates 22 of the first cassette holder 20.
3, 63 and a drive gear fixed to the left end of the shaft 62 and meshing with a first intermediate gear 64 rotatably supported by the left outer plate 22.
And a motor 66 fixed to the left outer plate 22 and fixed to the rotating shaft 66a by a worm gear 66b meshed with the first intermediate gear 64 via second and third intermediate gears 67 and 68. Have been.

The first cassette holder 20 and the second cassette body
A pre-detection switch 69 for detecting the forward position of the second cassette holder 50 and a second cassette holder 50
A rear detection switch 70 for detecting the retreat position of the camera is provided. Further, FIG. 12, each sensor during the middle cassette C ₂ inserted
26,55, each switch 28,30,32,58,69,70, each motor 49,66
FIG. 7 shows output waveform diagrams at the time of forward and reverse rotation of.

G _5. Configuration said cassette insertion opening 7 of the front cover opening and closing mechanism is opened and closed by a lid 71. The lid 71 is provided on both sides of the mounting body 2.
It is rotatable by a shaft 72 extending between 4 and 4. The shaft 72 is rotated by a lid opening / closing mechanism 80. The cover opening / closing mechanism 80 includes a gear 81 fixed to the right end of the shaft 72 and a pin pivotally rotatably in a vertical direction below the horizontal portion of the guide groove 4a on the inner surface of the right side plate 4 of the apparatus main body 2. Operating plate that is rotated by the movement of the guide roller 24
82 and a pin pivotally supported rotatably in the right side plate 4,
A substantially rectangular lever 83 that rotates vertically by pressing the operating plate 82, a sector-shaped gear 84 fixed to the end of the lever 83 and meshing with the gear 81, and the operating plate 82 and the sector-shaped gear Each of the coil springs 85 and 86 urges 84 downward. Thus, when the guide roller 24 slightly moves the guide groove 4a to the corner portion side, the operating plate 82 rotates slightly downward to open the front lid 71, and when it comes to the corner portion, the front lid 71 starts closing. Has become.

G _6. According to the cassette loading apparatus 1 of the above operation of the embodiment example, when mounting a large cassette C ₁ to the pair of reel blocks 9,9 as a cassette mounting position in the apparatus main body 2, the device main body a second cassette insertion slot 7 for inserting the large cassette C _1. Then, the size of the large cassette C ₁ is determined by the type sensor 26 provided on the first cassette holder 20. With intervals of the pair of reel mount 9,9 based on discrimination size of the cassette is automatically adjusted according to the size of the large cassette C _1, the pair of stopper portions 51g, the pin moves to 51g side 57 The loading start switch 58 is turned on by
49, 66 are driven (for example, each rotation shaft 49a, 66a rotates forward), and the first
The horizontal and vertical movement of the cassette holder 20 and the horizontal movement of the second cassette holder 50 are simultaneously performed. Therefore, although the horizontal stroke of the cassette holder 8 is long, the first cassette holder 20
And the second cassette holder 50 move at the same time, so that the horizontal movement time of the cassette holder 8 can be reduced as compared with the conventional one. As a result, the loading time can be reduced.

Further, the first cassette holder 20 and the second cassette holder 50
And the start of loading and the adjustment of the distance between the pair of reel stands 9 and 9 are simultaneously performed, so that the position of the second cassette holder 50 and the pair of reel stands 9 and 9 are
After confirming the position of 9, the first cassette holder 20 needs to be lowered. This confirmation is performed by the second switch 30. In this way, after confirmation of the position of the pair of reel mount 9,9, the large cassette C ₁ is mounted is loaded in the pair of reel blocks 9,9.

Also, the unloading of the large cassette C ₁ is adapted to be effected by the reverse operation of the loading, it is necessary not to issue a large cassette C ₁ from excessively cassette insertion opening 7 at the time of ejection. For this,
When the first cassette holder 20 reaches a horizontal portion after passing a corner portion such as the guide groove 4a, the movement is stopped, and thereafter, only the second cassette holder 50 is moved horizontally.

Further, the loading in the same medium cassette C ₂ or small cassette C _3, is unloaded.

Further, when inserting the small cassette C ₃ to the cassette insertion slot 7, for example, the right side of the guide member and the small cassette C ₃ vertically
If you try to insert it into the cassette slot 7 from the 12 side,
The right guide member 12 and the left stopper member 13 rotate downward in conjunction with each other, but as shown in FIG. 8, the right stopper member 13 is in an upright state. right stopper member 13 which is closing the cassette insertion port 7 can prevent erroneous insertion of the small cassette C _3. As a result, as shown in FIG.
A guide groove b provided at the center of the bottom of each cassette C is engaged with and inserted into a convex guide 53 projecting from the center on the bottom plate portion 51a of the second cassette holder 20, and each cassette C is inserted into a cassette. Mis-insertion into the holder 8 is prevented, and positioning in the left-right direction is reliably performed, so that each of the three size cassettes C can be reliably inserted into the determined position. As a result, a cassette of any size can be securely mounted at the cassette mounting position.

H. Effects of the Invention As described above, according to the present invention, the cassette guide mechanism is rotatably supported via a shaft provided between both side portions of the apparatus main body, and each cassette having a different size is attached to the cassette holder. A pair of guide members for guiding, and a pair of stopper members provided so as to be able to protrude and retract from the cassette insertion slot by rotating in conjunction with the rotation of each of the guide members located on the opposite side behind the pair of guide members. Therefore, erroneous insertion of each of the cassettes into the cassette insertion slot can be reliably prevented, and cassettes of various sizes can be reliably inserted at predetermined positions.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cassette mounting apparatus showing one embodiment of the present invention, FIG. 2 is an exploded perspective view of a main part of the apparatus, FIG. 3 is a schematic side view of the apparatus, and FIG. 5, FIG. 5 is a plan view of the cassette guide mechanism, FIG. 6 is a side view of the cassette guide mechanism, FIG. 7 is a side view of the cassette guide mechanism showing the guide of the small cassette, and FIG. 9 is a side view of the cassette guide mechanism showing an erroneous insertion prevention state,
The figure is a side view of the front lid opening and closing mechanism that opens and closes the cassette insertion slot,
FIG. 10 is a schematic plan view showing the relationship between the cassette and the reel base,
FIG. 11 is a schematic side view of a cassette mounting device showing a moving state of loading and unloading of each cassette, and FIG.
The figure shows the output waveform of each sensor etc. when the middle cassette is inserted.
FIG. 14 is a schematic side view of a cassette mounting device when a conventional cassette is inserted, FIG. 14 is a schematic side view of the cassette mounting device when a conventional cassette is mounted, FIG. 15 is a bottom view of a conventional cassette holder, FIG. FIG. 16 is a perspective view of a conventional cassette reciprocating mechanism, FIG. 17 is a cross-sectional view of a conventional cassette holder, FIG. 18 is a plan view of a conventional cassette holder showing an inserted state of each cassette, and FIG. FIG. 4 is a plan view of a conventional cassette holder showing a state of incorrect insertion of a cassette. DESCRIPTION OF SYMBOLS 1 ... Cassette mounting apparatus, 2 ... Device main body, 4 ... Side plate (side part), 7 ... Cassette insertion slot, 8 ... Cassette holder, 10 ... Cassette guide mechanism, 11 ... Shaft, 12, 12 …… a pair of stopper members, 14,14 …… a pair of stopper members, C
...... Each cassette.

Claims (1)

(57) [Claims] 1. An apparatus body having a cassette insertion slot into which any one of various types of cassettes having different sizes is inserted, and a cassette holder facing the cassette insertion slot and holding each of the cassettes. A cassette guide mechanism for guiding each cassette, wherein the cassette guide mechanism is rotatably supported via a shaft provided between both side portions of the apparatus main body, and a pair of guides for guiding each cassette to the cassette holder. And a pair of stopper members provided so as to be able to protrude and retract in the cassette insertion slot by rotating in conjunction with the rotation of each of the guide members located on the opposite side behind the pair of guide members. A cassette mounting device characterized by being constituted.