JPH0734519Y2 - Cassette extrusion equipment for cassette storage shelves - Google Patents

Description

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

A Industrial field of use B Outline of device C Conventional technology D Problem to be solved by device E Means for solving the problem F Action G Example G ₁ Description of cassette autochanger (Figs. 11 and 12) ) G ₂ cassette storage shelf positioning device description (Figs. 8 to 10D) G ₃ cassette storage shelf cassette extrusion device description (Figs. 1A to 7B) H Effect of invention A Industrial field of application The present invention relates to a cassette push-out device for a cassette storage shelf, which is most suitable for application to a cassette auto changer which performs continuous video reproduction and recording for a long time in a television broadcasting station, for example.

B Outline of the Invention The present invention is a cassette pushing device for a cassette storage shelf applied to a cassette autochanger or the like, and is movably attached to the cassette storage shelf and is moved from the backward movement position to the forward movement position by an operation means inserted from the outside. A first rack member that is moved to a second rack member and a second rack member on the first rack member.
And a third rack member for cassette ejection, which is movably attached with the rack member sandwiched therebetween, and is moved from a return position opposite to the first rack member to a forward movement position. By incorporating two sets of rack and pinion mechanisms between the second rack member and between the second and third rack members, the third rack can be operated with respect to the operation stroke of the first rack member by the operation means. The cassette pushing stroke by the member can be made sufficiently large.

C. Prior Art The applicant of the present invention has previously filed, for example, Japanese Utility Model Application No. Sho 62-125258 as a prior application example of a cassette storage shelf of a cassette autochanger using a video cassette.

In this prior application example, by operating the first rack member from the backward movement position to the forward movement position by the operation means that is pushed out from the cassette transfer machine and inserted into the cassette storage shelf,
The rack and pinion mechanism makes the second rack member the first
The second rack member is configured to drive the cassette in the cassette storage shelf into the cassette transfer machine by driving from the backward moving position opposite to the rack member to the forward moving position.

D Problem to be Solved by the Invention However, in this prior application, the operation stroke of the first rack member by the operation means and the cassette ejection stroke by the second rack member are the same. Further, since the operation stroke of the operation means ejected from the cassette transfer machine is limited, as a result, the cassette ejection stroke cannot be increased.

Therefore, in this prior application example, in a storage cassette serving as both a large cassette and a small cassette capable of selectively storing a large cassette and a small cassette, these large and small cassettes are arranged to compensate for a necessary difference in extrusion stroke caused by the size of the cassette. There is a problem that it cannot be extruded with a large extrusion stroke.

The present invention provides a cassette pushing device for a cassette storage shelf, which is capable of sufficiently increasing a cassette pushing stroke to the outside of the cassette storage shelf with respect to an operation stroke by an operating means operated from the outside of the cassette storage shelf. Is intended.

E. Means for Solving the Problems In order to achieve the above-mentioned object, the cassette push-out device of the cassette storage shelf of the present invention is movably attached to the cassette storage shelf and is moved to the return position by an operating means inserted from the outside. A first rack member that is operated to be moved from the forward position to the forward position,
A second rack member movably attached to the upper portion of the first rack member, and a return position that is movably attached to the upper portion of the second rack member and is diametrically opposite to the first rack member. A third rack member for ejecting the cassette, which is moved from the first rack member to the forward position, and first and second racks provided on the first rack member and the second rack member,
A first pinion which is rotatably attached to a fixed position of the cassette storage shelf by being meshed between them.
Rack and pinion mechanism, third and fourth racks provided on the first and third rack members, and a third rack member rotatably attached to the second rack member by meshing between them. A second rack and pinion mechanism including two pinions, and the first and second rack and pinion mechanisms and the second rack and pinion mechanism and the second rack and pinion mechanism by moving and operating the first rack member by the operating means. The third rack member is moved through the rack member, and the third rack member pushes out the cassette in the cassette housing portion to the outside.

F action According to the cassette pushing out device of the cassette storage shelf configured as described above, the two stages of the first, second and third rack members and the two sets of rack and pinion mechanisms installed between them are provided. By the feeding action of, the cassette ejecting stroke (S _{2 in} FIG. 6B) by the third rack member can be made sufficiently larger than the operating stroke (S _{3 in} FIG. 4B) of the first rack member by the operating means. .

G Embodiment An embodiment in which the present invention is applied to a cassette autochanger using a video cassette will be described below with reference to the drawings.

G ₁ First, the entire cassette autochanger will be described with reference to FIGS. 11 and 12.

First, this cassette autochanger can selectively use two types of cassettes, a large cassette 1 and a small cassette 2 having different sizes. Then, the large and small cassette-combined storage shelves 3, which can be used as both the large cassette 1 and the small cassette 2 and are stored in a plurality of horizontal rows in a plurality of upper and lower stages, and the small cassette 2 can be stored exclusively. A plurality of shelving blocks 6 provided with a plurality of upper and lower storage shelves 5 for exclusive use of small cassettes and a small cassette 2
The shelf block 9 provided with the insertion-only shelf 7 and the discharge-only shelf 8 is provided. The plurality of shelf blocks 4, 6 and 9 are arranged in two rows along the front and rear sides of the movement path 11 of the cassette transfer machine 10 which is moved in the vertical direction in FIG. 11 and in the horizontal direction in FIG. Are arranged. The recording / reproducing devices 13 are arranged in a plurality of upper and lower stages on one side of the shelf block row 12b on the rear side opposite to the shelf block row 12a on the operator side (front side) 12. The plurality of recording / reproducing devices 13 are front-loading type VTRs which are common to large and small cassettes and which selectively record or reproduce the large cassettes 1 and the small cassettes 2. The cassette insertion openings 13a of the plurality of recording / reproducing devices 13 are directed to the operator side 12, and the plurality of cassette insertion / ejection adapters 14 are provided on the front surface (operator side) of the plurality of cassette insertion openings 13a.
Is provided. Further, the cassette transfer machine 10 is provided with one cassette housing portion 15 for housing the large cassette 1 and the small cassette 2 selectively and commonly. An opening / closing door 16 that is divided into a plurality of pieces is provided on the front surface of the shelf block row 12a on the operator side 12.

According to this cassette autochanger, first, the large cassette 1 and the small cassette 2 are stored in advance in a large number of large and small cassette combined storage shelves 3 and small cassette dedicated storage shelves 5. At this time, the operator inserts and ejects the large and small cassettes 1 and 2 from the operator side 12 in the directions of the arrows a and a'for the storage rack 3 also serving as the large and small cassettes. Regarding the small cassette dedicated storage rack 5, the operator sequentially transfers the small cassettes 2 sequentially inserted in the insertion dedicated rack 7 by the cassette transfer machine 10 and sequentially inserts them in the direction of the arrow b from the movement path 11 side, and vice versa. The small cassettes 2 discharged from the small cassette dedicated storage rack 5 in the direction of the arrow b'by the cassette transfer machine 10 are sequentially discharged from the dedicated discharge rack 8 to the operator side 12.

Next, the cassette transfer device 10 is controlled to move vertically and horizontally along the moving path 11 to selectively receive the large cassette 1 or the small cassette 2 in the designated shelf address from the direction of the arrow b '. It is accommodated in the cassette accommodation unit 15. Then, after the large cassette 1 or the small cassette 2 accommodated therein is transferred to the recording / reproducing device 13 designated by the cassette transfer machine 10, the large cassette 1 or the small cassette 2 is inserted from the cassette insertion port 13a by using the adapter 14. The large cassette 1 or the small cassette 2 is recorded or reproduced by loading it in the designated recording / reproducing device 13 in the direction of arrow c. On the other hand, the large cassette 1 or the small cassette 2 which has been recorded or reproduced by the recording / reproducing apparatus 13 is unloaded in the direction of the arrow c ′ by using the adapter 14 and received by the cassette transfer machine 10, and the original operation is performed in the reverse operation described above. Return it to the shelf.

And by repeating the above operation continuously,
It is possible to perform continuous video playback and recording for a long time.

Moreover, at this time, a small cassette 2 having a small size and a short recording time is used to broadcast a short-time product such as a commercial, and a large cassette 1 having a large size and a long recording time is used to broadcast news and various programs. It is possible to adopt a method of distinguishing the length of the broadcasting time and the like by the size of the large and small cassettes 1 and 2 such that broadcasting for a long time can be performed.

G ₂ Next, referring to FIGS. 8 to 10D, the details of the large and small cassette / shelf 3 will be described.

First, as shown in FIG. 8, FIG. 9A and FIG. 10A, a shelf plate 19 is horizontally installed on the upper part of a shelf chassis 18 made of sheet metal.
A pair of left and right large cassette guide plates 20 are vertically provided on the left and right sides of the shelf plate 19, and the shelf chassis 18 of the upper and small cassette / combined storage shelves 3 are arranged close to the upper parts of the large cassette guide plates 20. Shelf board 19 and both large cassette guide boards 20
And a cassette housing portion (space) 21 is formed between the above and the upper shelf chassis 18. And this cassette storage part
Both front and rear ends of 21 are opened by openings 21a and 21b. A pair of left and right small cassette guides 22 are provided at the bottom of the cassette housing portion 21 so as to be movable between the inside and outside of the cassette housing portion 21.

A large cassette stopper 25 and a small cassette stopper 26 are attached to the upper part of the horizontal stopper base 24 placed on the upper part of the shelf chassis 18. Each of the large and small cassette stoppers 25 and 26 has a substantially L-shape, and the large cassette stopper 25 is arranged on the front side in the direction of the arrow d, which is the inserting direction of the large and small cassettes 1 and 2 into the cassette storage portion 21. The small cassette stopper 26 is arranged in front of the large cassette stopper 25 in the insertion direction (direction of arrow d '). And these large and small cassette stoppers
Reference numerals 25 and 26 are end portions on the arrow d'direction side, which are rotatably mounted on the stopper base 24 in the arrow e and e'directions by fulcrum shafts 27a and 27b which are perpendicular to the insertion direction and horizontal. ing. In addition, these large and small cassette stoppers 2
5 and 26 are return springs 2 attached to the outer circumference of the fulcrum shafts 27a and 27b.
Rotationally urged in the direction of arrow e'by 8a and 28b, respectively.

Further, the guide pin 29 integrally provided on the lower surface of the stopper base 24 is fitted into the long hole 30 provided in the shelf chassis 18, and the stopper base 24 is mounted on the shelf chassis 18 by the guiding action of these. It is configured to be movable in the directions of arrows d and d'between the backward movement position shown in FIGS. 9A and 10A and the forward movement position shown in FIGS. 9B and 10B. The stopper base 24 is urged to move in the direction of the arrow d'by a return spring 31 attached between the stopper base 24 and the shelf chassis 18,
Base stopper provided on the shelf chassis 18 at the return position
It is abutting 32.

In addition, a pair of front and rear pairs are provided on the left and right sides of the cassette storage section 21, and a total of four large cassette detection means, namely, detection rollers 34a and 34b.
Is provided. These detection rollers 34a, 34b are fulcrum shafts 35a, 35b perpendicular to the upper parts of the left and right sides of the shelf chassis 18.
It is rotatably attached to one end of each of a pair of front and rear L-shaped rotary arms 36a and 36b rotatably attached in the directions of arrows f and f'through. The front and rear ends of the pair of left and right cam levers 37a, 37b are rotatably connected between the pair of front and rear rotary arms 36a, 36b by pins 38a, 38b. Then, a pair of front and rear rotating arms 36a, 36b
And a pair of left and right cam levers 37a and 37b constitute a parallel four-link mechanism, and a pair of left and right cam levers 37
A and 37b are configured to be translated in the directions of arrows g and g '. The pair of left and right cam levers 37a and 37b are mounted between the shelf chassis 18 and the pair of left and right return springs 39.
By being urged to move in the direction of arrow g'by a and 39b, the four detection rollers 34a and 34b are urged to move in the direction of arrow f'via the four rotary arms 36a and 36b.

A shift plate 41 is horizontally provided on the shelf chassis 18 between the stopper base 24 and the one cam lever 37a. The long hole 42 provided in the shift plate 41 is fitted to the guide pin 43 provided on the shelf chassis 18, and the shift plate is provided by the guiding action of these.
41 is movable in the directions of arrows h and h '. A pin 44 provided on the lower surface of the shift plate 41 on one end side is engaged with an inclined surface 45 provided on one cam lever 37a.

Also, at the top of the stopper base 24, large and small cassette stoppers
A cam plate 47 is attached to the lower part of 25 and 26. The stopper base is placed in the long hole 48 provided in the cam plate 47.
A guide pin 49 provided on the 24 is fitted, and the cam plate 41 moves the arrow i,
It is configured to be movable in the i'direction. The cam follower 51a provided on the lower surfaces of the large and small cassette stoppers 25, 26 is provided above the pair of cam drive portions 50a, 50b provided at the upper portions of both ends of the cam plate 47 in the arrow d and d'directions. 51b
Are engaged. The arrow d on the cam plate 47
A guide pin 52 provided on one side of the directional end is fitted in a long hole 53 provided at the other end of the shift plate 41. The cam plate 47 is urged to move in the arrow i'direction by the return spring 54 on the stopper base 24, so that the shift plate 41 is also urged to move in the arrow h'direction via the guide pin 52. It should be noted that the cam drive unit 50a for controlling the large cassette stopper 25 has an arrow mark l ₁ in the direction of the arrow i, i ', which indicates the cam drive unit 50 for controlling the small cassette stopper 26.
It is made larger than the width l _{2 of} b.

Further, a locked portion 56, which is a notch, is provided on one end surface 24a of the stopper base 24 on the arrow d'direction side. A lock arm 57 is mounted on the shelf chassis 18 at a position close to the side surface 24a of the stopper base 24 by a fulcrum shaft 58 so as to be rotatable in the directions of arrows j and j '.
A lock pin 59 for locking the locked portion 56 is provided at one end of the lock arm 57. Also shelf chassis
The tip of a rotary arm 61 rotatably mounted on the 18 via a fulcrum shaft 60 and the other end of the lock arm 57 are rotatably connected to a lock plate 62 by pins 63a and 63b. The lock arm 57, the rotary arm 61, and the lock plate 62 form a parallel four-link mechanism, and the lock plate 62 is configured to be translated in the directions of arrows k and k '. The lock arm 62 is moved and biased in the k ′ direction by a return spring 64 mounted between the lock plate 62 and the shelf chassis 18, and thus the lock arm 62 is locked.
57 is rotationally biased in the direction of arrow j '.

Further, a cassette ejection lever 66 is attached to one side of the operator side 12 of the shelf chassis 18 via a fulcrum shaft 67 so as to be rotatable in the directions of arrows m and m '. The cassette ejection lever 66 is provided with a return spring 68 mounted between the cassette ejection lever 66 and the shelf chassis 18.
Is urged to rotate in the direction of arrow m '. And
The lock plate 62 is provided with an abutting portion 69 against which the cassette ejection lever 66 abuts.

Next, an operation of selectively inserting a large cassette and a small cassette into the cassette housing portion 21 will be described.

First, before inserting the cassette, as shown in FIGS. 9A and 10A, the large and small cassette stoppers 25 and 26 are moved back to the returning position in the direction of the arrow d ', and the large and small cassette stoppers 25 and 26 are stored in the cassette. It enters into the portion 21 from below in the direction of arrow e. Further, the four detection rollers 34a and 34b enter the inside of the cassette housing portion 21 from the left and right sides in the arrow f'direction. Then, the four detection rollers 34a, 3
Interlocked with 4b (the interlocking mechanism is omitted in the drawing)
The pair of left and right small cassette guides 22 also horizontally enter the cassette storage portion 21 from below.

Next, FIGS. 9A and 9B, and FIGS. 10A and 10B show a case where the small cassette 2 is inserted into the cassette storage portion 21 through the opening 21a on the operator side 12 in the direction of arrow d. is there.

First, as shown in FIG. 9B, the cassette storage portion 2 is opened from the opening 21a.
The small cassette 2 inserted in the direction of arrow d in 1 is guided by both small cassette guides 22 and inserted. When the small cassette 2 is inserted to the position shown in FIG. 10A, the front end 2a of the small cassette 2 in the inserting direction is the small cassette stopper.
Abut on 26. Then, after that, the small cassette 2 pushes the small cassette stopper 26 in the direction of arrow d, and integrally moves the stopper base 24 against the return spring 31 in the direction of arrow d, while the small cassette 2 moves to the 9B direction. It is inserted to the position shown in FIG. 10 and FIG. 10B. Then, at the moment when the stopper base 24 is moved to the forward movement position, as shown in FIG. 9B, the lock arm 57 is rotated by the return spring 64 in the direction of arrow j ′, and the lock pin 59 is engaged with the locked portion 56. The stopper base 24 is locked in the forward movement position by being combined. Then, the front end 2a of the small cassette 2 inserted into the cassette housing portion 21 is accurately positioned at the predetermined position shown in FIGS. 9B and 10B by the small cassette stopper.

Next, FIGS. 9C and 9D and FIGS. 10C and 10D show a case where the large cassette 1 is inserted into the cassette storage portion 21 from the opening 21a of the operator side 12 in the direction of arrow d. is there.

First, as shown in FIG. 9C, the cassette storage section 2 is opened from the opening 21a.
When the large cassette 1 inserted in 1 in the direction of arrow d reaches the position shown by the one-dot chain line, both left and right side surfaces 1b of the large cassette 1 are brought into contact with both detection rollers 26a on the opening 21a side, The both detection rollers 26a are pushed out from the inside of the cassette housing portion 21 in the direction of the arrow f against the both return springs 39a and 39b, whereby the outer shape of the large cassette 1 is detected. Then, both rotary arms 36a are rotated in the direction of arrow f against both return springs 39a and 39b, and both cam levers 37a and 37b move toward arrow g.
The two small cassette guides 22 are automatically released downward from the inside of the cassette housing portion 21 by moving in the direction.

Then, as shown in FIG. 9C, when one cam lever 37a is moved in the direction of arrow g, its inclined surface 45 pushes the pin 44 of the shift plate 41 in the direction of arrow h, and this shift plate 41 is moved in the direction of arrow. The cam plate 47 is moved in the h direction, and the cam plate 47 is moved in the arrow i direction against the return spring 54 via the guide pin 52. Then, only the cam drive part 50b is disengaged from the bottom of the cam follower part 51a in the direction of arrow i, and the 10C
As shown, only the small cassette stopper 26 has a return spring 28.
It is rotated in the direction of arrow e'by b, and only the small cassette stopper 26 is automatically released downward from the inside of the cassette housing portion 21. At this time, the width l ₂ of the cam drive unit 50b
Since the width l ₁ of the cam drive unit 50a is larger than that of the 10C
As shown in the figure, the cam follower 51a is kept on the cam driver 50a, and the large cassette stopper 25 is still inserted into the cassette housing 21 in the direction of arrow e.

In short, at the moment when the large cassette 1 is inserted to the position shown by the one-dot chain line in FIG. 9C, the small cassette stopper 26 interferes with the insertion of the large cassette 1 in the direction of arrow d as shown in FIG. 10C. In order to prevent the occurrence of such a problem, it is automatically released to the outside (downward) of the cassette storage portion 21 in the direction of arrow e '. Therefore, the large cassette 1 is inserted in the cassette storage portion 21 in the direction of arrow d without contacting the small cassette stopper 26 as shown by the solid line in FIG. 10C.

Then, when the large cassette 2 is inserted up to the position of the chain double-dashed line in FIGS. 9C and 10C, the front end 1a of the large cassette 1 in the insertion direction is brought into contact with the large cassette stopper 25. Then, after that, the large cassette 1 pushes the large cassette stopper 25 in the direction of arrow d, and integrally moves the stopper base 24 against the return spring 31 in the direction of arrow d, while the large cassette 1 moves to the 9th direction. It is inserted to the position shown in Fig. And Fig. 10D. Then, at the moment when the stopper base 24 is moved to the forward movement position, as shown in FIG. 9D, the lock arm 57 is rotated by the return spring 64 in the direction of arrow j ′, and the lock pin 59 is engaged with the locked portion 56. The stopper base 24 is locked in the forward movement position by being combined. Then, the front end 1a of the large cassette 1 inserted into the cassette storage position 21 is accurately positioned at the predetermined position shown in FIGS. 9D and 10D.

G ₃ Next, referring to FIGS. 1A to 7D, a cassette push-out device for the large and small cassette / shelf 3 will be described.

First, as shown in FIGS. 1A, 2 and 3A, a shutter 7 is provided on the bottom of the opening 21a on the operator side 12 of the cassette housing 21.
1 is provided. The shutter 71 is substantially L-shaped and has a length equal to or more than 1/2 of the opening 21. The shutter 71 is rotatably attached to the upper part of the shelf chassis 18 by a pair of left and right horizontal fulcrum shafts 72 in the directions of arrows n and n '. The lock means for moving and locking the shutter 71 in the cassette housing portion 21 is constituted by the lock plate 62, and the pair of left and right cam drive portions 73 provided on the lock plate 62,
A pair of left and right cam followers 74 provided on the lower surface of the shutter 71.
Are engaged.

When the lock plates 62 move in the directions of arrows k and k ', both cam drive portions 73 drive both cam driven portions 74, and the shutter 71 is rotationally driven in the directions of arrows n and n'. There is.

Next, as shown in FIGS. 1A to 3A, 6A and 7A,
The cassette extrusion device is provided with an arrow d on the upper part of the shelf chassis 18,
It is attached so as to be movable in the d'direction, and the cassette storage portion 21
The rack pressing member 76, which is moved from the backward movement position on the opening 21b side to the forward movement position on the opening 21a side, is attached to the upper part of the shelf chassis 18 so as to be movable in the arrow d and d'directions, and the cassette storage portion 21 Of the first rack member 77, which is operated to move from the backward movement position on the opening 21b side to the forward movement position on the opening 21a side, and is movably attached to the upper portion of the first rack member 77 in the directions of arrows d and d '. The second rack member 78 and the second rack member 75 are attached to the upper part of the second rack member 75 so as to be movable in the directions of the arrows d and d ', and are located on the side of the opening 21a of the cassette housing portion 21 opposite to the first rack member 77. And a third rack member 79 for pushing out the cassette, which is moved from the return position to the forward position on the side of the opening 21b. A substantially L-shaped cassette pushing member 80 is attached to the upper portion of the third rack member 79 via a horizontal fulcrum shaft 81 so as to be rotatable in the directions of arrows n and n '.

Then, the cassette extrusion device includes a first rack member.
77 and the first and second racks 82 and 83 provided on the second rack member 78, and freely rotatable through a mounting shaft 84 which is meshed between these racks and is perpendicular to a fixed position on the upper part of the shelf chassis 18. A first rack and pinion mechanism 86 including a first pinion 85 attached to the first and third rack members 77 and 79, and third and fourth racks 87 and 88 provided on the first and third rack members 77 and 79. A second rack and pinion mechanism 91 including a second pinion 90 that is engaged with the second rack member 78 and is rotatably mounted on the upper portion of the second rack member 78 via a mounting shaft 89 is incorporated.

The first pinion 85 is composed of a two-stage gear consisting of a lower small gear 85a and an upper large gear 85b. And is meshed with a first rack 82 formed along one inner edge of the opening 77a. The second rack member 78 has a substantially U-shaped cross section, and a pair of guide rails 78 formed in parallel along both side edges thereof.
a is fitted in a pair of guide grooves 77b formed in parallel along the upper portions of both side edges of the first rack member 77.
Then, the first rack is formed on the second rack 83 formed on the lower surface of the second rack member 78 along the inside of one guide rail 78a.
The large gear 85b of the pinion 85 is meshed. The second pinion 90 is composed of a two-stage gear including a lower large gear 90a and an upper small gear 90b, and the large gear 90a is arranged along the one side edge of the first rack member 77 to form a second gear. Of the third rack member 78, and the small gear 90b is meshed with the fourth rack 88 formed along one side edge of the third rack member 79. There is. Further, the guide pin 79a provided on the lower surface of the third rack member 79 has the second pin
It is fitted in a guide groove 78b provided in the rack member 78. Further, the cassette push-out member 80 is arranged below the floating prevention plate 79b horizontally provided at the end of the third rack 79, and the cassette push-out member 80 has a pair of left and right protruding portions. Guide pin 80a and protrusion 8 provided on the lower surface
0b and are provided. Further, the rack pressing member 76 is formed in a substantially L shape by the horizontal plate portion 76a and the vertical plate portion 76b, and the horizontal plate portion 76a forms the rack chassis 18 and the first rack member 7.
It is inserted in a horizontal notch 77c provided on the lower surface of 7 and is arranged on the upper portion of the shelf chassis 18. Then, the horizontal plate portion 76 is attached to the guide pin 92 attached to the upper part of the shelf chassis 18.
a is a guide groove 93a provided in the first rack member 77,
93b is fitted. A guide pin 94 provided on the lower surface of the second rack member 77 is fitted in a guide groove 95 provided on the shelf chassis 18. Also, the rack pressing member
The vertical plate portion 76b of 76 is provided with a through hole 76c into which the end portion of the third rack member 79 can be inserted.

Further, a pin 97 is vertically provided on the lower surface of a projecting piece 96 projecting from the cam plate 47 of the positioning mechanism toward the rack pressing member 76, and an inclined surface for pressing the side surface of the pin 97 in the direction of arrow i. 98 is provided on one side surface of the horizontal plate portion 76a of the rack pressing member 76. Further, a regulation plate 99 which is in contact with the side surface of the pin 79 and regulates the return of the cam plate 47 in the arrow i'direction by the return spring 54 is provided on one side surface of the first rack member 77. In addition, the shutter 71
A substantially L-shaped recess 10 into which a cassette pushing member 80 is fitted
0 is provided, and a pair of left and right guide grooves 101 (see FIG. 7B) into which the pair of left and right guide pins 80a of the cassette pushing member 80 are fitted are provided on both left and right sides of the recess 100. Further, the rack pressing member 76 is urged to move in the direction of arrow d by a return spring 102 attached between the rack pressing member 76 and the rack chassis 18.

Next, the operation of the cassette extrusion device will be described.

Initially, the third rack member 79 and the cassette pushing member 80 are moved in the direction of the arrow d'to the return position on the side of the opening 21a of the cassette housing 21 as shown in FIGS. 2, 3A, 6A and 7A. Has been revived. At this time, the cassette pushing member 80 is moved to the shutter 71.
The guide pins 80a are fitted in the recesses 100, and the guide pins 80a are fitted in the guide grooves 101. Then, as shown by the one-dot chain line in FIG. 3A, the shutter 71 and the cassette pushing member 80 are integrally rotated in the direction of the arrow n, and both of them are released to the lower portion of the cassette housing portion 21.

Next, as shown in FIG. 3A, as described above, the large and small cassettes 1 and 2 are opened in the cassette housing portion 21 on the operator side 12.
21a is selectively inserted in the direction of arrow d, and is pushed by these large and small cassettes 1 and 2, and the large and small cassette stoppers 25,
26 and the cassette base 24 are integrally moved from the backward movement position in FIG. 9A to the forward movement position in FIGS. 9B and 9D in the direction of arrow d, and then are indicated by a chain line in FIGS. 9B and 9D. As shown, the lock arm 57 is rotated in the direction of the arrow j ', and the cassette base
24 is locked in the return position and the lock plate 62
Are moved in the direction of arrow k '.

Then, since both cam drive portions 73 of the lock plate 62 push up both cam driven portions 74 of the shutter 71,
As indicated by the solid line in FIG. 3A, the shutter 71 and the cassette pushing member 80 are rotated integrally with each other in the direction of the arrow n ′, and both of them enter the cassette housing portion 21 from below.

As a result, as shown by the one-dot chain line in FIG. 2, the front and rear ends 1a, 1c and 2a, 2b of the large and small cassettes 1 and 2 selectively inserted in the cassette housing portion 21 are large and small cassette stoppers 25 and 26, respectively.
And the shutter 71 are accurately positioned, and the cassette pushing member 80 can come into contact with the rear ends 1c and 2b of the large and small cassettes 1 and 2.

Next, the operation of pushing the large and small cassettes 1 and 2 selectively stored in the cassette storage portion 21 into the cassette storage portion 15 of the cassette transfer machine 10 in the direction of the arrow d from the opening 21b will be described.

This cassette pushing out operation is performed by the operating means 103 pushed out in the direction of arrow d'from the cassette transfer machine 10 as shown in FIGS. 4A, 6A and 7A.

At this time, as shown in FIG. 2, large and small cassettes 1, 2
In order to make up for the required difference S ₁ in the extrusion stroke caused by the size of the large and small cassettes, as shown in FIGS. 3B and 6B, the large and small cassettes 1,
2 can be extruded in the direction of arrow d with a large stroke S ₂ . Moreover, the minimum required operating stroke by the operation unit 103 is an S ₃ shown in Figure 4B, an extrusion stroke S ₂
Is approximately four times the operating stroke S ₃ .

First, as shown in FIG. 4A, operation unit 103 is in contact with the vertical plate portion 76b of the rack pushing member 76, the stroke S ₄ is moved in the arrow d 'direction against the spring 102 returning the. Then,
The inclined surface 98 of the rack pressing member 76 is the pin 97 of the cam plate 47.
Is pushed in the direction of arrow i against the return spring 54, and as shown in FIG. 6B, both cam drive parts 50a and 50b of the cam plate 47 are moved from both cam driven parts 51a and 51b of the large and small cassette stoppers 25 and 26 to the arrow i. Removed in the direction. As a result, as shown by the alternate long and short dash line in FIG. 3B, the large and small cam stoppers 25 and 26 rotate in the direction of the arrow e ', and these are disengaged from the front ends 1a and 2a of the large and small cassettes 1 and 2, and are located below the cassette housing portion 21. Be escaped to.

Then, when the rack pressing member 76 is moved by the stroke S _{4 in the} direction of the arrow d ′ by the operating means 103, the vertical plate portion 76b is brought into contact with the end surface 77d of the first rack member 77, and the operating means 103 continues. Rack pressing member 7 in the direction of arrow d '
To push 6, the first rack member 77, together with the rack pressing member 76, is moved by the stroke S _{3 in the} direction of the arrow d ′ from the backward movement position shown in FIG. 4A to the forward movement position shown in FIG. 4B. At this time,
At the moment when the first rack member 77 is moved in the direction of arrow d ′,
The pin 97 of the cam plate 47 relatively rides on the regulation plate 99, and the cam plate 47 is locked at the position moved in the arrow i direction shown in FIG. 6B.

Then, when the first rack member 77 is moved by the stroke S _{3 in the} direction of the arrow d ′, the feeding action of the first rack and pinion mechanism 85 causes the second rack member 78 to move from the returning position in FIG. 4A. The stroke S _{5 is} moved in the direction of arrow d to the forward movement position shown in FIG. 4B. That is, the first rack 82 drives the first pinion 85 in the direction of arrow o via the small gear 85a, and the large gear 8
5b drives the second large rack 83 to drive the second rack member 78 in the direction of arrow d.

Then, the second rack member 78 strokes in the direction of arrow d.
When S _{5 is} moved, the third rack member 79 is moved in the direction of arrow d from the position of FIG. 5A to the position of FIG. 5B with respect to the second rack member 78 by the feeding action of the second rack and pinion mechanism 86. Stroke S _{6 is} moved. That is, when the second pinion 90 is self-propelled in the direction of the arrow d together with the second rack member 78 via the mounting shaft 89, the third rack 87 moves to the second position.
The pinion 90 is driven in the arrow p direction via the large gear 90a, the small gear 90b drives the fourth rack 88, and the third rack 79 is driven in the arrow d direction.

The stroke S ₅ + S ₆ is the push stroke S ₂
Corresponding to the third rack member 79 and the cassette pushing member 80.
From the return position shown in Figures 6A and 7A.
Stroke S _{2 is} moved in the direction of arrow d to the forward movement position shown in FIG. 7B.

Then, the cassette pushing member 80 allows the large and small cassettes 1,
When the rear ends 1c and 2b of the second cassette 2 are pressed, these large and small cassettes 1 and 2 are
Is extruded from the opening 21b of the cassette housing 21 into the cassette housing 15 of the cassette transfer machine 10 in the direction of arrow d as shown in FIG. 3B. At this time, when the cassette push-out member 80 is moved in the direction of the arrow d from the backward movement position, as shown in FIG. 7B, the protrusion 80b is formed before the pins 80a come out of the guide grooves 101 in the direction of the arrow d. Rides on top of the second rack member 78. Then, by this riding, the cassette pushing member 80
Since the rotation in the arrow n direction is blocked, the cassette pushing member 80 can strongly push the large and small cassettes 1 and 2 in the arrow d direction.

Meanwhile, the minimum required operating stroke to move operating the first rack member 77 in the arrow d 'direction by operating means 103 is a S ₃ shown in Figure 4B. Further, in this embodiment, the gear ratio of both gears 85a and 85b of the first pinion 85 is 1: 2.
Configured to, both gears 90a of the second pinion 90, the gear ratio of 90b 1: By configured to 2/3, at four times the extrusion stroke S ₂ of the operating stroke S _3, the large and small cassettes 1 and 2 It is designed to be extruded in the direction of arrow d. However, by appropriately changing the gear ratio of the both pinions 85 and 90, it is possible to appropriately change the ratio of the extrusion stroke S _{2 to} the operation stroke S ₃ .

After the cassette is pushed out, the operating means 103 is returned in the cassette transfer machine 10 in the direction of arrow d, and the rack pressing member 76 is also returned by the return spring 102 in the direction of arrow d to the returning position.

However, the third rack member 79 and the cassette pushing member 80 remain moved forward to the forward movement positions shown in FIGS. 6B and 7B.

After that, when the large and small cassettes 1 and 2 are returned from the cassette transfer machine 10 into the cassette housing portion 21 in the direction of the arrow d ′, the cassette pushing member 80 is pushed by the large and small cassettes 1 and 2, and the cassette pushing member 80. And the third rack member 79 are returned together in the direction of arrow d'to the return position shown in FIGS. 6A and 7A.

Then, the third rack member 79 is returned to the return position in the direction of the arrow d ', so that the first and second rack and pinion mechanisms 86 and 91 perform the reverse operations of the above-described operations. The rack members 77 and 78 are returned to the returning positions in the directions of arrows d and d '.

Then, when the first rack member 77 is returned to the return position in the direction of arrow d, the regulating plate 99 is removed from the pin 97 of the cam plate 47 in the direction of arrow d as shown in FIG. 6A. The plate 47 is returned in the arrow i'direction by the return spring 54, and the large and small cassette stoppers 25 and 26 are selectively rotated in the arrow e direction into the cassette storage portion 21 as shown by the solid line in FIG. 3A. Enter selectively. That is, when the large cassette 1 is returned to the cassette storage portion 21, the small cassette stopper 26
Is brought into contact with the bottom surface of the large cassette 1, and only the large cassette stopper 25 enters the cassette storage portion 21. Further, when the small cassette 2 is returned to the cassette storage portion 21, both the large and small cassette stoppers 25 and 26 enter the cassette storage portion 21.

When ejecting the large and small cassettes 1 and 2 selectively accommodated in the cassette accommodating portion 21 from the opening 21a to the operator side 12, as shown in FIG. 9D, the operator causes the cassette eject lever 66 to return the spring. Rotate in the direction of arrow m against 68. Then, the cassette ejection lever 66 contacts the contact portion 69 of the lock plate 62, and pushes the lock plate 62 against the return spring 64 in the direction of arrow k. Then,
Both cam drive parts 73 escape from the bottom of both cam follower parts 74 in the direction of arrow k, and the shutter 71 and the cassette pushing member 80 rotate in the direction of arrow n as shown by the chain line in FIG.
It is escaped below the cassette storage portion 21. Immediately after that, the lock arm 57 is rotated in the arrow j direction, the lock pin 59 is disengaged from the locked portion 56, and the stopper base 24 is released.
The lock at the forward position of is released. Then, at that moment, the stopper base 24 is returned by the return spring 31 to the returning position shown in FIG. 9A in the direction of the arrow d ', and the large and small cassettes 1 and 2 are opened by the large and small cassette stoppers 25 and 26.
It is discharged from a to the operator side 12 in the direction of arrow d '.

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

For example, in the cassette auto-changer shown in the embodiment, the large cassette 1 is stored in the large / small cassette storage rack 3, but a large cassette dedicated storage rack for storing only the large cassette 1 may be provided.

In the embodiment, the movable cassette push-out member 80 is attached to the third rack member 79. However, if the cassette is put in and taken out from the cassette storage shelf only from one direction, the cassette push-out member 80 is set to the first rack member 79. It is possible to omit the movable cassette pushing member by integrally molding with the rack member 79 of No. 3.

Further, if the operating means 103 directly moves the first rack member 77, the rack pressing member 76 is unnecessary.

Further, the present invention may be a cassette pushing device for a cassette storage shelf other than the cassette auto changer.

H Effect of the Invention The present invention is configured as described above, and it is possible to sufficiently increase the cassette pushing stroke to the outside of the cassette storage shelf with respect to the operation stroke of the operating means operated from the outside of the cassette storage shelf. Therefore, by applying it to a storage shelf that also serves as a large and small cassette that can selectively store large cassettes and small cassettes, these large and small cassettes are used to compensate for the necessary difference in extrusion stroke caused by the size of the cassette. It can be extruded with a large extrusion stroke.

Moreover, since the first, second, and third rack members are arranged one above the other, it is possible to obtain a very compact cassette pushing device despite having a large cassette pushing stroke. Play.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1A is a perspective view of the entire cassette extrusion device, FIG. 1B is an exploded perspective view of the main parts of the cassette extrusion device, and FIG. 2 is the cassette extrusion device. A plan view of the whole, FIGS. 3A and 3B are side views showing an outline of the cassette pushing operation, FIGS. 4A to 5B are plan views for explaining the operation of the rack and pinion mechanism, FIGS. 6A and 6B. Is a plan view for explaining the cassette ejecting operation, FIGS. 7A and 7B are side views for explaining the cassette ejecting operation, FIG. 8 is a perspective view of the positioning device, and FIGS. 9A to 9D are operations of the positioning device. 10A to 10D are sectional side views for explaining the operation of the positioning device, FIG. 11 is a front view of the entire cassette autochanger, and FIG. 12 is a plan view of a part of the cassette autochanger. In the reference numerals used in the drawings, 1 ... Large cassette 2 ... Small cassette 3 ... Large and small cassette storage rack 77 ... First rack member 78 ... Second rack member 79 ... Third rack member 82 ...... First rack 83 ...... Second rack 85 ...... First pinion 86 ...... First rack and pinion mechanism 87 ...... Third rack 88 ...... Fourth rack 90 ...... Second Pinion 91 …… Second rack and pinion mechanism 103 …… Operating means

Claims (1)

[Scope of utility model registration request] 1. A first rack member which is movably attached to a cassette storage shelf and is moved from a backward movement position to a forward movement position by an operation means inserted from the outside, and the first rack member. A second rack member movably attached to the upper portion, and a second rack member movably attached to the upper portion of the second rack member, and is moved from a return position opposite to the first rack member to a forward movement position. A third rack member for pushing out the cassette, first and second racks provided on the first rack member and the second rack member, and the cassette storage shelf of the cassette storage shelf by being meshed between them. A first rack and pinion mechanism including a first pinion rotatably attached to a fixed position, third and fourth racks provided on the first and third rack members, and a space between them. Meshed with the second A second rack and pinion mechanism comprising a second pinion rotatably attached to the rack member, and moving the first rack member by the operating means to move the first rack member and the first and second rack and pinion mechanisms. A cassette storage configured such that the third rack member is moved via the second rack and pinion mechanism and the second rack member, and the cassette in the cassette storage section is pushed out by the third rack member. Shelf cassette extrusion equipment.