JPS61283061A - Cassette loading device - Google Patents

Abstract

PURPOSE:To make the constitution small and simple and to make large the stroke in the vertical direction of the cassette holding means by changing the opening angle of two pairs of arms in which the central part is freely turnably linked and controlling the shifting in the vertical direction of the cassette holding means. CONSTITUTION:A cassette holding means 83 to hold a cassette 1 through a sliding member 65 of a cassette loading device 43 is shifted to a loading position, etc. Two pairs of arms 96 and 95, in which the lower edge part and the upper edge part are freely slidably linked respectively to slots 93 and 101 of the means 83, are freely turnably linked in the central parts 96c and 95c. When the opening angle of the arms 95 and 96 is changed, the shifting quantity in the vertical direction of the means 83 is controlled. By the simple and small constitution to use two pairs of the arms, the stroke in the vertical direction of the cassette holding means can be enlarged.

Description

DETAILED DESCRIPTION OF THE INVENTION The cassette loading device of the present invention will be explained according to the following items.

A,! Application fields of Rakudo B1 Outline of the invention C1 Background technology 9 Problems to be solved by the invention E1 Means for solving the problems F, Embodiment a, Tape cassette [Figures 11 to 16] b, Audio Tape recorder [Fig. 2] C. Base board [Fig. 1, Fig. 3, Fig. 4, Fig. 6, Fig. 9, Fig. 10] d. Cassette loading device [Fig. 1, Fig. 3 to Fig. 5, Fig. 10] e, Chassis section [Fig. 1, Fig. 3 to Fig. 6, Fig. 9,
[Fig. 10] f, Sliding frame [Fig. 1, Fig. 3 to Fig. 5, Fig. 8] g. Wire [Fig. 3, Fig. 4, Fig. 6, Fig. 9] h. Cassette holding means h-1, Cassette holder [Fig. 1 to 5, Fig. 8, Fig. 10 to 12] h-2, Holder support arm [Fig. 1, Fig. 4, Fig. 5, Fig. 8] , Fig. 1O] h-3, Holder elevating means [Fig. 1, Fig. 3 to Fig. 6, Fig. 8, Fig. 10] h-4, Holder movement 1, Cassette presser [Fig. Figure 3, Figure 4, Figure 8,
Figure 1O” j. Holder frame [Fig. 1 to tJS3, Fig. 1O] k, Cassette mounting part [Fig. $1 to Fig. 3] t5 Cassette suppression lever [Fig. 1, Fig. 3, Fig. 4, Fig. 8, Fig. 10
Figure] M, Movement of the sliding plate of the tape cassette [Figures 11 and 12
Figures 14 to 16] m-1, movement from the closed position to the open position m-2, movement n from the open position to the closed position. Drive system [Fig. 3, Fig. 4, Fig. 9] n-1, configuration n-2, operation O9 movement control means [Fig. 3 to Fig. 8, Fig. 10] P, cassette loading operation p-1 , Loading P-2, 7 Loading G1 Effects of the Invention (A. Field of Industrial Application) The present invention relates to a novel cassette loading device. Specifically, the system includes a sliding member that is moved between a pulled-out position and a retracted position in the horizontal direction, and a cassette holding means that is supported by the sliding member so as to be movable in the vertical direction, and the loading of the cassette is The present invention relates to a cassette loading device in which the cassette holding means is moved downward after the sliding member is moved to the retracted position, and the cassette holding means is moved in the vertical direction without drawing a rotational trajectory. It is an object of the present invention to provide a novel cassette loading device which is capable of increasing the movement stroke of the member supporting the cassette holding means without enlarging the shape of the member supporting the cassette holding means.

(B. Summary of the Invention) The present invention provides a sliding member that moves between a pulled-out position and a retracted position in the horizontal direction, and a cassette holding means that is supported by the sliding member so as to be movable in the vertical direction. In the cassette loading device, the loading of the cassette is carried out by moving the sliding member to the retracted position and then moving the cassette holding means downward, the cassette holding means being positioned so as to intersect with each other. The cassette holding means can be moved in the vertical direction without drawing a rotational trajectory by supporting the sliding member by two arms whose intersecting parts are rotatably connected. , the movement stroke of the cassette holding means can be increased without enlarging the shape of the member supporting the cassette holding means.

(C0 Background Art) Audio tape recorders, video cheap recorders, etc. are equipped with a cassette loading device that loads a tape cassette into a predetermined cassette loading position in these tape recorders. , top-loading method, and front-loading method are often adopted.

However, in the cassette loading device using the above-mentioned loading method, the tape cassette is attached to the cassette holding member by inserting the tape cassette through the insertion opening of the cassette holding member. Since this is done while resisting the elastic force of an elastic member such as a cassette holder provided on the cassette holding member, the operation feeling when mounting the tape cassette is not very good.

Therefore, in order to be able to attach the tape cassette to the cassette holding means without receiving resistance from the elastic force of the cassette presser, it is possible to move the cassette holding means horizontally and vertically. It is conceivable that the tape cassette be mounted on the cassette holding means in a state where the cassette holding means is pulled out of the outer casing. If you do it like this.

Since the tape cassette can be mounted on the cassette holding means by placing the tape cassette from above the cassette holding means, the mounting feeling can be made extremely good.

In addition, when the cassette loading device is of the type described above, it is conceivable that the mechanism for moving the cassette holding means in two directions, horizontally and vertically, is basically configured as follows. . That is, a sliding member is provided that is moved horizontally between a pulled-out position pulled out of the outer casing and a retracted position pulled into the outer casing, and the cassette holding means is moved up and down with respect to the sliding member. If the sliding member is supported so as to be movable in this direction, the sliding member can be moved in two directions, horizontally and vertically.

(D. Problem to be solved by the invention) By the way, as described above, the cassette holding means is supported so as to be movable in the vertical direction relative to the sliding member, and moreover, it is supported by as few members as possible. For example, the structure is
It is conceivable to use a so-called parallel link mechanism. That is, the cassette holding means is connected to the rotating tips of two arm members whose proximal ends are rotatably supported by a sliding member and are positioned so as to extend parallel to each other, and the cassette holding means is It is conceivable to adopt a structure in which movement in the vertical direction is performed by rotating the arm.

However, according to such a structure, the cassette holding means is moved vertically in a rotational trajectory, so that the tape cassette and the member 1 to be engaged with it from below, such as the reel There is a problem in that alignment with members such as the engagement shaft, cassette positioning pin, or tape loading post becomes difficult.

Therefore, a problem arises in that in order to move as vertically as possible, the length of the arm must be increased to some extent.

Furthermore, in order to increase the vertical movement stroke of the cassette holding means, it is necessary to further increase the length of the arm, resulting in an increase in the size of the cassette loading device.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the cassette loading device of the present invention has a sliding member that is moved between a pulled-out position and a retracted position in the horizontal direction, and a cassette holding means supported by the moving member so as to be movable in the vertical direction, and loading of the cassette is carried out by moving the sliding member to a retracted position and then moving the cassette holding means downward. In the cassette loading device, the cassette holding means is positioned so as to intersect with each other, and the intersecting portions of the two arms are rotatably connected to each other. and supporting the sliding member by connecting each lower end to the cassette holding means side,
The cassette holding means is moved in the vertical direction by changing the mutual opening angles of the two arms.

Therefore, according to the present invention, when the opening angle of the two arms is changed, the lower ends of the two arms are rotated about the position where these arms are connected to each other, but the movement Since the directions are opposite to each other, the cassette holding means connected to these lower ends are moved in the vertical direction without drawing a rotation locus.

(F. Embodiment) Details of the cassette loading device of the present invention will be explained below according to the embodiment shown in the accompanying drawings.

Before explaining the cassette loading device,
First, the tape cassette that is detachably attached to the tape cassette will be explained.

(a. Tape force setting)) Fix diagram to Figure 16] 1 is a tape cassette for PCM audio.

Reference numeral 2 denotes a cassette case, which is made up of an upper half 3 and a lower half 4 made of synthetic resin and connected by screws or the like.

Inside the cassette case 2, a pair of glue hubs 6 and 7 wrapped with a magnetic tape 5 are rotatably housed. In addition, 8
is a transparent window plate provided on the upper half 3, through which the reel hub 6.7 can be seen.

A front cover 9 is rotatably attached to the front end of the cassette case 2, and is used to open and close the front end surface of the cassette case 2.

A sliding plate 10 is slidably provided on the bottom surface of the cassette case 2, and is used to open and close the bottom surface of the cassette case 2. The sliding plate 10 has a bottom plate part 11 and the bottom plate part 1.
Short side plate portions 12.12 rising upward from the left and right side edges of 1 are integrally formed of synthetic resin. 13. 13. The guide protrusions 13.13, 13, 13, 13, 13, 13, 13, 22, 22, 22, 23, 22, 22, 22, 23, 22, 22, 22, 22, 22, 22, 22, 2, 2, 2, and are guide protrusions protruding from the inner surface of the side plate part 12.12 of the sliding plate 1O so as to be aligned in a straight line in the front and rear direction.
... are guides 1R14, 14 formed on both left and right sides of the lower half 4 of the cassette case 2 so as to extend in the front-rear direction.
By being slidably engaged with the cassette case 2, the sliding plate 10 is attached to the cassette case 2 so as to be slidable in the front-rear direction.

Reference numeral 15.15 denotes a projecting piece provided on the front edge of the sliding plate 10 so as to protrude upward from a position appropriately spaced from side to side.

Reference numeral 16 denotes a space for inserting a guide member, etc., formed behind the magnetic tape 5 stretched along the front opening of the cassette case 2, and a column is provided at the rear left corner of the space 16. 17 is erected, and a torsion spring 1 is attached to this support 17.
The coil portion 18a of No. 8 is fitted, and the spring hook, whose arm piece 18b is formed to protrude upward from the center of the front edge of the sliding plate 10, elastically engages with the piece 19 from the rear. The elastic force of the torsion spring 18 urges the sliding plate 10 to move in the direction of closing the space 16, that is, toward the front.

Furthermore, the bottom plate portion 11 of the sliding plate 10 has two insertion holes 20.
20 is formed, and when the sliding plate lO is retreated, this insertion hole 2 is formed as shown by the two-dot chain line in FIG.
0.20 is the insertion hole 21 formed in the bottom plate of the lower half 4.
21 (hereinafter, the position of the sliding plate 10 in this state is referred to as the "open position"), and the engagement shaft for driving the reel provided in the PCM audio tape recorder enters into the cassette case 2. Then, the sliding plate 10 moves forward, and as shown in FIG.
6 is closed, the insertion hole 20.2 of the sliding plate 10 is
The positions of the insertion holes 21.21 of the lower half 4 and the insertion holes 21.21 of the lower half 4 are shifted from each other, and the insertion holes 21.21 of the lower half 4 are connected to the sliding plate ■0.
(Hereinafter, the position of the sliding plate 10 in this state will be referred to as the "closed position" 6).

Furthermore, a shallow groove 22 is formed in the bottom plate portion 11 of the sliding plate 10, extending in the front-rear direction and opening at the front edge of the bottom plate portion 11.
The opening end of the shallow groove 22 is formed to gradually widen. When the front cover 9 is closed, the opening end of the shallow groove 22 is connected to the notch 2 formed at the lower edge of the front cover 9.
It is made to correspond to 3. Furthermore, two notches 24 and 24 are formed in the lower edge of the front cover 9.

A semicircular engagement notch 25 is formed at the front end of the shallow groove 22, and an engagement hole 26 is formed at the rear end of the shallow groove 22.

Reference numeral 27 denotes a lock piece, which is formed so as to extend in the front-rear direction so that its rear end is connected to the bottom plate of the lower half 4 by forming a U-shaped cut groove 28 on the bottom plate of the lower half 4, and its front end is flexible. There is. Further, a hemispherical engagement protrusion 29 is integrally formed on the lower surface of the front end portion of the lock piece 27 . The upper surface of the lock piece 27 is shaved by a predetermined amount to make it easy to bend, and a limiter 30 is provided protruding from the upper half 3 at a predetermined height above the front end of the lock piece 27, as shown in FIG. ), the lock piece 27 is prevented from being bent more than necessary and broken.

As shown in FIG. 14, when the sliding plate 10 is closed, the engaging protrusion 29 at the tip of the locking piece 27 fits into the engaging hole 26 provided in the sliding plate 10, and the sliding plate 10 is closed. The plate 10 is locked to prevent movement toward the open position. In this state, the engagement protrusion 29 projects downward from the engagement hole 26 but is located within the shallow groove 22.

Note that 31 is a groove formed in a portion of the upper surface of the upper bar 23 near the front edge so as to extend in the left-right direction.

(b, Audio Tape Recorder) [FIG. 2] Reference numeral 32 is a PCM audio tape recorder equipped with a cassette loading device, etc., which will be described later. 33 is an outer casing of the recorder 32, and a front plate 33a thereof has a drawer opening 34 for drawing out a cassette holder.

(c, base board) [Figure 1, Figure 3, Figure 4, Figure 6, Figure 9, Figure 10 1 35 is the outer casing 33 of the audio tape recorder 32
This is a base board provided inside the.

The base substrate 35 as a whole is formed into a substantially rectangular shape that is long in the front-rear direction, and pillar support pieces 35a, 35a are formed to protrude laterally from the front end portions of both left and right edges thereof.

Reference numeral 36 denotes an opening for arranging the reel drive shaft formed at the front end of the base substrate 35, and the opening 36 is formed in an oval shape that is elongated in the left-right direction.

Reference numerals 37 and 38 denote reel drive shafts supported by a reel base board (not shown) provided below the opening 36, and the upper end portions of these reel drive shafts 37 and 38 are provided with engagement shaft portions 37
a, 38a, and the engaging shaft portions 37a, 3
8 a is positioned so as to protrude upward from the base substrate 35 through the opening 36 .

39 is a head drum provided at the rear end of the base board 35.

Reference numerals 40 and 41 designate positioning pins arranged on the upper surface of the base substrate 35 at a position approximately in the middle between the opening 36 and the head drum 39 and spaced apart from each other by a predetermined distance # from left to right.

Reference numeral 42 denotes an abutting plate fixed at a position substantially midway between the center portion and the right edge in the left-right direction of the front end portion of the base substrate 35. The abutment plate 42 consists of a mounting piece 42a and a vertically extending abutment piece 42b, and the attachment piece 42a is fixed to the base board 35 by fixing means such as screws, with the abutment piece 42b facing forward. The abutting plate 42 is a member for relatively pressing the first cassette and rotating the first cassette by abutting one end of a first cassette suppressing lever, which will be described later, against the abutting piece 42b of the abutting plate 42. It is.

Although not shown in the drawings, the base substrate 35 is provided with mechanisms such as a tape running mechanism and a tape loading mechanism, and the tape cassette 1 is loaded by a cassette loading device (described later) and placed in a predetermined position on the base substrate 35. When the tape loading mechanism loads the magnetic tape 5 from the cassette case 2,
is pulled out, and various tape guide members and the head drum 39 constituting the above-described tape traveling mechanism are pulled out.
It can be wrapped around etc.

(d, Cassette Loading Device) [FIGS. 1, 3 to 5, and 10] 43 is a cassette loading device. The cassette loading device 43 includes a cassette holder into which the tape cassette J is mounted, a sliding frame that supports the cassette holder so as to be movable in the vertical direction and is moved in the front and back directions, and a sliding frame that supports the sliding frame. supporting chassis, drive system,
In addition, a cassette suppressing lever for pressing the cassette case 2 of the tape cassette l mounted on the cassette holder is provided.

(e, chassis part) [Figures 1, 3 to 6, 9
FIG. 10 ] 44 is a chassis. The chassis 44 has a rectangular shape that is long in the longitudinal direction, and includes a base 45 that occupies approximately the rear half of the rectangle, and a base 45 that extends forward from both left and right ends of the front edge of the base 45. side pieces 46.46 projecting so as to extend parallel to each other;
A front piece 47 is formed between each of the front end portions bent downward at a substantially right angle.

The chassis 44 is arranged between the front end portions of the side pieces 46, 46 and the pillar support pieces 35a, 35a formed on the base board 35,
The posts 48, 48, 48 (48) (only three are shown in the drawing) provided between the left and right side edges of the base board 35 and the base board 35 are provided above the base board 35 in a predetermined position. They are fixed to the base substrate 35 so as to be spaced apart from each other and facing each other in parallel with the base substrate 35.

49 and 50 are front rail support pieces provided on the chassis 44, and the rail support pieces 49 and 50 are bent in an oval shape when viewed from the left side, and the side pieces 46 and 46 of the chassis 44 are bent. It is fixed at a position near the front end using fixing means such as screws. In addition, these rail support pieces 49.5
Vertically extending support portion 49 of the left one 49 of 0
a is formed slightly higher than the support portion 50a of the right side 50.

51 and 5z are rear rail support pieces integrally formed on the base 45 of the chassis 44, and these rail support pieces 5
Of 1 and 52, the left side 51 is formed by cutting and raising the -1 part of the left side edge of the base 45, and the right side 52 is formed at the right end of the rear edge of the base 45. It is formed into a folded shape.

Reference numerals 53 and 54 are approximately round bar-shaped guide rails for movably supporting a sliding frame, which will be described later, in the front-rear direction. A rack is provided to pass between the rail support piece 51 on the right side and the rail support piece 51 on the right side.
4 is provided so as to span between the front rail support piece 50 and the rear rail support piece 52.

Reference numeral 55 denotes a wire running gear provided on the lower side of the chassis 44, and the wire running gear 55 has a pulley part 56 integrally formed at its lower part, and the right side edge and rear side edge of the chassis 44 are different. It is rotatably supported by a gear support shaft 57 that projects downward from a position close to the corner.

58 is a wire pulley, and the wire pulley 58 is rotatably supported by a pulley support shaft 59 that projects downward from the front end of the right side piece 46 of the chassis 44.

Further, 60 is a guide pulley, and the guide pulley 60 has a pulley support shaft 61 projecting downward from the root of the right side piece 46 of the chassis 44 to the base 45.
is rotatably supported.

Note that a wire, which will be described later, is endlessly passed between the pulley portion 56 of the wire traveling gear 55 and the wire pulley 58.

Reference numeral 62 denotes a cut-and-raised piece formed by partially cutting and raising a portion of the base portion 45 of the chassis 44 near the rear edge downward.

Reference numeral 63 denotes a notch formed in a portion of the front edge of the base 45 from the approximate center toward the stacked stone side;
This is a spring hanging hole formed at a position close to the notch 63 of the spring.

Note that the chassis 44 is inside the outer casing 33.

The front piece 47 is close to the front plate 33a of the outer casing 33, and the upper edge of the front piece 47 is located at approximately the same height as the lower edge of the outlet 34.

(f, sliding frame) [Figures 1, 3 to 5, and 8] 65 is the guide rail 5 provided on the shan, 44
3.54 is a sliding frame that is slidably supported.

Reference numerals 66 and 67 indicate side plates of the sliding frame 65, and the side plates 66 and 67 are formed substantially symmetrically with respect to each other, but the right side plate 67 is formed slightly longer than the left side plate 66. These side plates 66 and 67 have a certain width in the vertical direction and are formed into a substantially plate shape that extends long in the front and back direction, and the front part thereof is bent downward in a substantially crank shape when viewed from the side. At the same time, support pieces 68 and 68 are inserted inwardly from the lower edges of the crank-shaped bent portions.
,... are installed protrudingly.

69 is a front plate of the sliding frame 65, and the left and right ends of the front plate 69 are connected to support pieces 68 formed on the side plates 66 and 67.
．． By screwing into 68, . . ., the lateral roots 66.
A rack is provided so as to pass between each front end portion of 67, and
A notch 70 is formed at the right end of the rear side edge. 7
Reference numeral 1 designates a lever support pin that is erected from a position of the front plate 69 that is closer to the matching side than the notch 70 . Also, 72
．． Reference numeral 72 denotes screw holes formed at both left and right ends of the front plate 69.

Reference numerals 73 and 73 designate supporting pieces that are formed so as to project horizontally inward from a portion of the upper edge of the side plates 66 and 67 that is slightly closer to the rear side from the center.
A screw hole 74, 74 is formed at the front end of 73.

Reference numeral 75 denotes a crosspiece, and the crosspiece 75 is formed into a plate shape long in the left-right direction, and has a notch 76 formed in the center of its front edge, which is approximately in the shape of an inverted U when viewed from above. Both ends are fixed to the rear part of the support piece 73.73.

77 and 78 are guided elements. These guided children 7
7 and 78, the left one 77 is the side plate 66.67.
The one on the left side 66 is fixed to the rear end of the left side surface with a screw, and grooves 77a, 77a, which are approximately horizontally U-shaped when viewed from the front and back directions, are formed so as to open on the left side surface. ing.

Further, the right guided element 78 is fixed to the rear end of the right side surface of the right side plate 67 by screwing, and insertion holes 78a, 78a are formed to pass through this in the front and back direction. Then, the insertion holes 78a, 7 of the guided element 78 on the right side
The right guide rail 54 provided on the chassis 44 is inserted into the groove 8a, and the groove 7 of the left guided element 77 is inserted into the groove 8a.
A left guide rail 53 is slidably engaged with 7a and 77a.

Thus, the sliding frame 65 is supported by the guide rails 53.54 so as to be movable in the front-rear direction by having its guided elements 77.78 slidably supported by the guide rails 53.54. At the same time, the guided elements 77 and 78 are attached to the front rail support pieces 49 and 50 provided on the chassis 44.
The guided element 77.7 is prevented from moving forward by coming into contact with the supporting parts 49a, 50a.
8 is a rear rail support piece 5 formed on the chassis portion 44
By coming into contact with 1.52, movement further rearward is prevented.

Note that when the sliding frame 65 reaches a position where its guided elements 77 and 78 abut against the front rail support piece 49 and 50 (hereinafter referred to as the "draw-out position"), the positions shown in FIGS. As shown in FIG. 10(A), the front part thereof is positioned so as to protrude from the outlet 34 formed in the outer casing 33 to the outside of the outer casing, and the guided child 77.7 days later. When it comes to the position where it comes into contact with the side rail support pieces 51 and 52 (hereinafter referred to as the "retracted position"), it is shown in FIGS. 4, 5, 10 (B) and 10 (C). As shown in FIG.
It is located close to 4. Also, the front plate 6
The notch 70 formed at 9 is formed at a position corresponding in the front-rear direction to the upper end of the abutment piece 42b of the abutment plate 42 provided on the base board 35, and is formed at a position corresponding to the upper end of the abutment piece 42b of the abutment plate 42 provided on the base board 35, and at the same time when the sliding frame 65 reaches the retracted position. In this state, it is positioned at a certain distance from the abutment piece 42b.

79 is a wire hanging plate. The wire hooking plate 79 is bent in a substantially inverted shape, and the left end of its horizontally extending portion is screwed to the upper surface of the right guided element 78, and its vertical A hanging pin 80 is provided protruding from the lower end of the inner surface of the portion extending in the direction.

(g, wire) [Figs. 3, 4, 6, 9] 81 is a wire. The wire 81 has both ends 81a
, 81b are formed in a loop shape, and one end portion 81a
is secured to a retaining pin 80 protruding from a wire retaining plate 79 provided on the sliding frame 65. The wire 81 extends rearward from the one end portion 81a, is wound around a pulley portion 56 of the wire running gear 55 provided on the chassis 44 for approximately one and a half turns, and then is folded back toward the front and is folded back in the middle. It is brought into contact with the guide pulley 60 at , and after being wrapped around the wire boob 0-58, it is folded back, and the other end 81b is hooked to the hooking pin 80 of the wire hooking plate 79 via the limiter spring 82. .

Therefore, when the wire running gear 55 is rotated clockwise from the state where the sliding frame 65 is in the retracted position, the wire 81 is run so that its both ends 81a and 81b move forward. The two-wire retaining plate 79 will be moved forward, and thereby the sliding frame 65 will be moved toward the drawn-out position. Also, from the state where the sliding frame 65 is in the drawn-out position, the wire running gear 5
5 is rotated counterclockwise, the wire 81 is run so that its both ends 81a and 81b move backward, so the wire retaining plate 79 is moved backward. , the sliding frame 65 is moved toward the retracted position.

(h, cassette holding means) (h-1, cassette holder) [Figs. 1 to 5, 8, 10 to 12] 83 is a cassette holder. The cassette holder 8
Reference numeral 3 denotes a substantially rectangular bottom plate 84 that is long in the left and right direction, and a short side plate 8 that is formed to stand up from the left and right side edges of the bottom plate 84.
5.86, it is formed into a substantially U-shape when viewed from the front and rear directions. The bottom plate 84 of the cassette holder 83 has insertion holes 87 located apart from each other in the left and right direction.
．． 87 is formed. In addition, an inverted trapezoidal notch 88 is formed in the center of the rear edge of the bottom plate 84, and protrusions 89 and 89 are formed in continuous portions of both sides of the notch 88 to protrude slightly rearward. and the protrusion 89.8
A short protrusion 90.90 is formed upwardly from the tip of the protrusion 9.

Numeral 91 is a protrusion formed on the bottom plate 84 to extend in the front-rear direction. It is formed in a portion between the closer position and a position substantially corresponding to the rear end of the insertion hole 87.87. The front end and the rear end of the protrusion 91 are inclined surfaces 91a and 9 that are downwardly downward.
1b. Incidentally, such a protrusion 91 is attached to the bottom plate 84.
It is formed integrally with the bottom plate 84 by punching out the portion marked L upwards.

Reference numeral 92 indicates a notch formed approximately in the center of the front edge of the bottom plate 84, and reference numeral 93.94 indicates a guide elongated hole formed in the rear portion of the lower end of the side plate 85.86 so as to extend in the front-rear direction. It is.

The length of the cassette holder 83 in the left-right direction is
The distance is slightly shorter than the distance between the left and right side plates 66 and 67 of the sliding frame 65.

(h-2, holder support arm) [Fig. 1, Fig. 4, Fig. 5, Fig. 8, Fig. 10] 95.96.97 and 98 are the cassette holders 83
This is an arm that supports the sliding frame so as to be movable in the vertical direction.

The arms 95, 96, 97 and 98 are formed into elongated plate shapes, and have approximately the same length, and have insertion holes 95a, 95b, 96a, 96b at both ends of each arm.
, 97a, 97b, 98a, 98b are formed, and
An insertion hole 95c is also provided at approximately the center in each longitudinal direction.
, 96C197c, 98c are formed. and,
As shown in FIG. 1, two arms 95 and 96 located outside the left side plate 85 of the cassette holder 83 are
They are located so that they intersect with each other when viewed from the side, and
A pin 99 is inserted through insertion holes 95c and 96c formed at the center of each of the two, so that they are rotatably connected to each other. Similarly, the other arms 97 and 98 are rotated relative to each other by inserting pins lOO into through holes 97c and 98c formed at the center of each arm, as shown in FIG. 1O. freely connected.

101 and 102 are formed so as to extend along the front-rear direction at a portion slightly closer to the front from the center in the front-rear direction among the upper edge portions of the side plates 66 and 67 of the sliding frame 65;
The guide holes 101 and 102 are elongated guide holes positioned so as to face each other in the left-right direction, and movable pins 103 and 104 are engaged with the guide elongated holes 101 and 102 so as to be able to slide in the front-rear direction. In addition, 105 and 106 are cassette holders 8
The front ends of the lower end portions of the side plates 85 and 86 of No. 3 are also fixing pins provided so as to protrude outward from each other.

Of the two arms 95 and 96 on the left side and the two arms 97 and 98 on the right side, the one 95 and 97 located on the reaction force set holder 83 side has an insertion hole 95a formed therein at its upper end; The moving via 10 is connected to 97a.
3.104, the tip of the part protruding inward from the guide elongated hole 101.102 is inserted and rotated to the side plate 66.67 of the sliding frame 65 via the moving pins 103, 104. Through holes 95b and 97 are movably connected and supported so as to be movable within a certain range in the front and back direction, and the lower ends thereof are formed here.
By inserting the tips of the fixing pins 105 and 106 through the fixing pins 105 and 106, the fixing pins 105 and 106 are rotatably connected to the front ends of the side plates 85 and 86 of the cassette holder 83.

In addition, 107 and 108 are the side plates 8 of the cassette holder 83.
5.86 is a moving pin that is engaged with the guide elongated hole 93.94 formed in the guide hole 93.94 so as to be movable in the front and back direction, and 109.110 is a moving pin that is engaged with the guide elongated hole 93.94 formed in the guide slot 93.94 so as to be movable in the front and back direction. These fixing pins are provided so as to project inwardly from positions a certain distance forward from the front ends of the elongated holes 101 and 102.

The lower ends of the arms 96, 98 are inserted through the moving pins 107, 108 on the cassette holder 83 side through the insertion holes 96b, 98b formed therein. The insertion holes 96a and 98a are rotatably connected to the cassette holder 83 and supported so as to be movable in the front and back direction within a certain range, and the upper ends thereof are formed therein.
The fixed bins 109 and 110 on the sliding frame 65 side are inserted into the sliding frame 65, thereby being rotatably connected to the sliding frame 65.

(h-3, holder elevating means) [Figs. 1, 3 to 6, 8, 10] 111.111 is a portion of the side plate 66.67 of the sliding frame 65 near the lower edge. These are arm support bins that project horizontally inward from positions corresponding to the lower sides of the support pieces 73 and 73.

112 is a tension spring, and the tension spring 1
12 has one end connected to the arm support bin 111.111.
It is attached to the one on the left side.

The other end is engaged with the movable pin 103 which is slidably engaged with a guide elongated hole lot formed in the left side plate 66 of the sliding frame 65.

As a result, the moving pin 103 is moved to the tension spring 1
Due to the tensile force of 12, it will always be pulled backwards.

Therefore, since the upper end of arm 95 is pulled rearward, the upper end of arm 96 is relatively moved forward. As a result, a force directed diagonally backward and upward is applied to the arm 95, and a force directed diagonally upward to the front is applied to the arm 96. The resultant force of these two forces, that is, the force directed upward is It will act on bottle 99. Therefore, a rotational force acts on the arms 95 and 96 in the direction of increasing their mutual opening angle.

Since this rotational force includes an upward component at least at the lower end of the arm 95.96, it ultimately acts as a force to pull the cassette holder 83 upward via the moving bin 107 and the fixed bin 105. It turns out.

Therefore, the tensile force of the tension spring 112 constantly applies a moving force to the cassette holder 83 to move it upward.

Note that the cassette holder 83 does not hold the movable bin 1 while no downward pressure is applied to it.
03 is in contact with the rear end edge of the guide elongated hole 101, that is, the position where the bottom plate 84 is slightly higher than the front plate 69 of the sliding frame 65 (hereinafter referred to as the "raised position").
) will be held.

113.113 is a rotating arm. The rotating arm 11
3.113, the lower part of the rear end is the arm support bin i.
It is rotatably supported at the tip of ll, 111, and
A connecting rod 114 extending along the left-right direction at the top of each rear end
are integrally connected to each other by being fixed at both ends. A notch 115.115 is formed at the front end of each rotating arm 113.113, and extends along the longitudinal direction of these rotating arms 113.113.
The notches 115 and 115 are slidably engaged with fixing pins 105 and 106 protruding from side plates 85 and 86 of the cassette holder 83.

Therefore, the rotation force applied to the left arm 95.9 by the aforementioned tension spring 112 is transmitted through these rotation arms 113, 113 to the right arm 97.9.
98 as well. As a result, the force of moving the cassette holder 83 upward by the tension spring 112 and the force of pressing the cassette holder 83 downward by the slider described later are applied to the left and right side plates 83.
．． The cassette holder 83 is applied evenly to the cassette holder 86 to avoid distortion or inclination when the cassette holder 83 is moved in the vertical direction.

116 is a slider positioned along the left side of the right side plate 67 of the sliding frame 65. The slider 116
is formed into a long plate shape in the front-rear direction, and has a pressed piece 117 bent leftward from its rear edge, and a notch 118 extending in the front-rear direction at the front end.
, and a long hole 119 extending in the front-rear direction is formed at the rear end. And slider 116
A guide pin 120 protruding from the right side plate 67 of the sliding frame 65 is slidably engaged in the elongated hole 119, and
When the notch 118 is engaged with the moving pin 104, the cassette holder 83 is movable in the front-back direction, and when the cassette holder 83 is in the raised position, the moving pin 104 is biased. The front edge of the elongated hole 119 is held in contact with the guide pin 120 by the rearward moving force.

Reference numeral 121 denotes a rack plate provided at the base 45 of the chassis 44 so as to be movable in the front-back direction. The rack plate 1
21 is formed into a plate shape that is long in the front-rear direction as a whole, and guided long holes 122, 122 extending along the front-rear direction are formed at both front and rear ends of the long holes 122, 122. A controlled elongated hole 123 is formed in the part between. Reference numeral 123a denotes a lock portion formed to bend toward the right side from the front end of the controlled elongated hole 123. A rack portion 124 is formed approximately at the center of the left side surface of the rack plate 121 in the front-rear direction, and an arm 125 is provided protruding approximately toward the right side from a portion of the right side surface near the front end. A pressing protrusion 126 is integrally formed at the tip of the arm 125. In addition, the pressing protrusion 1
26 is positioned so as to face the pressed piece 117 of the slider 116 from behind.

Reference numerals 127 and 127 refer to guide pins that are erected at a portion of the base 45 of the chassis 44 that corresponds to a position closer to the stacked stones from the notch 63 formed at the front edge of the base 45 and spaced apart from each other in the front and back direction. There is a guide pin 127, 127 in the guided long hole 122, 122 of the roller plate 121.
is slidably engaged with the guide pins 127, 127, so that the guide pins 127, 127 are supported so as to be movable in the front-rear direction.

Note that the rack plate 121 is located at a position where the front edges of the guided elongated holes 122 and 122 abut against the guide pins 127, 127 before the sliding frame 65 comes to the retracted position (hereinafter referred to as the "retracted position"). , ), and when the sliding frame 65 reaches the retracted position, the rack portion 124 is moved forward by being sent forward by a gear of a drive system, which will be described later. Further, the slider 116 is configured such that when the sliding frame 65 reaches the retracted position, the pressed piece 117 is positioned close to the pressing protrusion 126 of the rack part 121 from the front, as shown in FIG. It has become.

Then, when the sliding frame 65 comes to the retracted position, the rack plate 1
21 will now be moved forward.

Then, the pressing protrusion 126 of the rack plate 121 presses the slider 1.
Since the 16 pressed pieces 117 are pressed from behind, the slider 116 is moved forward, and thereby the movable pin 104 with which the front end of the slider 116 is engaged is moved forward. Therefore, the upper end of arm 97 is moved so as to shorten the distance between it and the upper end of another arm 98, so that arms 97 and 98 are rotated in a direction that reduces the mutual opening angle. That is, arm 9
7.98 are rotated so that their respective lower ends are moved downward, so that the cassette holder 83 is moved downward against the tensile force of the tension spring 112.

Then, the rear end edge of the elongated hole 119 of the slider 116 comes into contact with the guide pin 120, so that the slider 116 is prevented from moving forward from there.

In this state, the cassette holder 83 is inserted into the insertion hole 8 formed in the bottom plate 84 of the cassette holder 83 so that the engaging shaft portions 37a and 38a of the reel drive shaft 37.
7.87, it is lowered to a position where it protrudes upward to some extent from the bottom plate 84 (hereinafter referred to as the "loading completion position").

Note that when the rack plate 121 is moved toward the retracted position from the state where the cassette holder 83 is at the loading completion position, the forward pressing force on the moving pin 104 by the slider 116 is released, so that the cassette holder 83 is moved toward the raised position by the tensile force of the tension spring 112.

Furthermore, the arms 95, 96, 97 and 98 that support the cassette holding means 83 on the sliding frame 65 all have approximately the same length, and the arms 95, 96, 97 and 98 are located at their central portions, that is, from each other. The corresponding part is pin 99.
Since they are rotatably connected to each other by 100, when they are rotated in opposite directions about the pins 99 and 100, the amount of displacement in the vertical direction of each lower end is equal to each other.

Therefore, the cassette holder 83 is moved in the vertical direction without drawing a rotation locus.

(h-4, Movement of Holder) Therefore, the cassette holder 83 is moved along the following trajectory.

That is, when the sliding frame 65 is between the pulled out position and the retracted position, the cassette holder 83 is held in place by the tension spring 11.
When the sliding frame 65 is held in the raised position by the tensile force of 2 and reaches the drawn-out position, the sliding frame 65 is
As shown in FIG. 3, it is positioned so as to protrude outside the outer casing 33 through the outlet 34 formed in the outer casing 33.

When the sliding frame 65 is moved from this state to the drawn-out position, the cassette holder 83 is drawn into the outer casing 33, and as shown in FIG. .87 is positioned coaxially with the reel drive shafts 37 and 38 provided on the base board 35 side.

Furthermore, when the sliding frame 65 reaches the retracted position, the rack plate 12
1 is moved forward from the previously held retracted position. Then, since the slider 116 is pressed forward, the arms 97, 98, 95, and 96 are rotated in a direction that reduces the opening angle of each other, and thereby the cassette holder 83 is directed downward. and move it to the loading completion position.

Furthermore, when the rack plate 121 of the cassette holder 83 is moved from the loading completion position to the retracted position, the arms 95, 96, 97, and 98 are pulled apart by the tension force of the tension spring 112 to open the opening angle of each other. By being rotated in a direction that increases the value, it is moved to the raised position.

Then, when the sliding frame 65 is moved from this state to the drawn-out position, the cassette holder 83 is projected out of the outer casing 33.

Thus, the cassette holder 83 is moved horizontally together with the sliding frame 65, and is also moved vertically when the sliding frame 65 is in the retracted position. Therefore, the cassette holder 83 is moved along a substantially inverted movement trajectory.

(i, cassette holder) [Fig. 1, Fig. 3, Fig. 4, Fig. 8
FIG. 10] 128.128 is a cassette holder provided on the cassette holder 83. Reference numerals 129 and 129 are support pieces formed of plate spring material so as to be bent in a substantially inverted shape when viewed from the front and rear directions, and the lower part of the vertically extending portion of the support pieces 129 and 129 is a cassette holder. The horizontally extending portion of the cassette holder 83 is fixed to the rear end portions of the left and right side plates 85 and 86 of the cassette holder 83.
They are placed so as to face each other from above.

130.130 is a presser formed of synthetic resin into a substantially inverted conical shape, and pins 131, 131 are provided to protrude upward from the upper surface of the presser 130.130. The presser foot 130, 130 is connected to the pin 131.
．． 131 is a hole 132, (132) formed in a horizontally extending portion of the support piece 129, 129 (only the hole formed in the right support piece is shown in the drawing).
is inserted from below, and the chain holes 132, (132)
It is fixed to the support pieces 129 and 129 by caulking the portions that protrude upward from the support pieces 129 and 129.

(J, Holder frame) [Figures 1 to 3, Figure 1O] Reference numeral 133 denotes a holder frame attached to the front part of the sliding frame 65 so as to cover it. Reference numeral 134 denotes a front plate of the holder frame 133, and the front plate 134 is formed to have approximately the same size as the outlet 34 formed in the outer casing 33, and has both right and left ends and a lower end of the rear surface. The excluded part is a slope 134a that gradually displaces backward as it goes to the lower end.
A notch 134b is formed at the center of the rear surface in the left-right direction.

Reference numerals 135 and 135 denote side parts of the holder frame 133, and the side parts 135 and 135 are formed so that the cross-sectional shape thereof is approximately gate-shaped, and the front part thereof has an approximately inverted platform when viewed from the side. Valley portions 135a, 135a forming a shape are formed.

Further, 136 is a bottom plate of the holder frame 133, and the bottom plate 136 is formed to protrude rearward from the lower end of the front plate 134, and its length is 135.
) A cut groove 136a is formed in a portion that is approximately half the length of the valley portions 135a, 135a in the front-rear direction and corresponds to the cutout portion 134b formed in the front plate 134. Reference numeral 137 is a top plate whose both ends are continuous with the respective rear ends of the upper surface of the side parts 135 and 135, and the top plate 137 and the side parts 13
There is a roughly rectangular notch 1 at the corner where 5.135 intersects.
38.138 is formed. Reference numeral 139 denotes a substantially inverted trapezoidal notch formed at the rear end edge of the top plate 137.

The holder frame 133 has a bottom plate 136 positioned above the front plate 69 of the sliding frame 65 with a slight gap therebetween, and both left and right ends of the top plate 137 are slidable. The supporting piece 73 of the moving frame 65 is fixed to the sliding frame 65 while being positioned in front of the supporting piece 73 . That is, holder frame 1
Holes (not shown) are formed in the troughs 135a, 135a of the side portions 135, 135 of the top plate 137, and both left and right ends of the portion near the rear edge of the top plate 137. The screws 140, 140, . . . to be inserted are inserted into the screw holes 72, 72 formed in the front plate 69 of the sliding frame 65.
and the screw hole 74.74 formed in the support piece 73.73.
It is fixed to the front part of the sliding frame 65 by being screwed into the sliding frame 65.

When the holder frame 133 is attached to the sliding frame 65, the side plates 85 and 86 of the cassette holder 83 and the sliding frame 6
Since the front part from the support piece 73.73 of the side plate 66.67 of 5, the arm 95.96.97.98, etc. are located inside the holder frame 133, these members etc. are not visible from the outside. In addition, the cassette presser 128.
The upper end of 128 is the notch 138°1 of the holder frame 133.
38. Further, when the cassette holder 83 is in the raised position, the bottom plate 136 of the holder frame 133 is located on the same plane as the bottom plate 84 of the cassette holder 83, and the bottom plate 84 of the cassette holder 83
It will be located in front of and close to this.

(k, cassette mounting part) [Figures 1 to 3] When the cassette holder 83 is in the raised position, the bottom plate 84 of the cassette holder 83 and the holder frame 1
A cassette mounting section 141 in the cassette loading device 43 is constituted by the bottom plate 136 of 33, each inner surface of the side parts 135 and 135, and the rear surface of the front plate 134.

When the sliding frame 65 reaches the drawer position, the cassette mounting portion 1.41 is positioned so as to protrude from the drawer opening 34 of the outer case 33 to the outside of the outer case 33.
The tape cassette 1 is mounted and removed from the cassette mounting section 141 in this state.

That is, in a state in which the cassette mounting portion 141 is pulled out of the outer casing 33, the tape cassette 1 is placed with its front lid 9 facing toward the rear, and its cassette case 2 is placed on the left and right sides of the holder frame 133. When the tape cassette 1 is inserted diagonally from above and pressed lightly from above so that it is located between the cassette mounting section 1
41, it is attached to the first UiJ as shown by the thick two-dot chain line.

Note that the position of the tape cassette l when it is mounted on the cassette mounting section 141 in this manner is hereinafter referred to as a "temporary mounting position" with respect to the cassette mounting section 141.

When the tape cassette 1 is installed in the temporary installation position, the sliding plate 10 provided on the tape cassette 1 has a projection 15.15 on the front edge formed on the bottom plate 84 of the cassette holder 83. An insertion hole 87.87 is brought into contact with the protruding piece 90.90 from the front side, and the insertion hole 20.20 thereof is formed in the bottom plate 84 of the cassette holder 83.
It will be located coaxially with the In addition, in this state, the presser 130.1 of the cassette presser 128, 128
30 comes into elastic contact with both left and right ends of the front end of the upper surface of the cassette case 2 from above.

(L, cassette pressing lever) [Figs. 1, 3, 4, 8, 1O] 142 is a first cassette pressing lever, and 143 is a second cassette pressing lever.

The first cassette suppression lever 142 is formed in a substantially dogleg shape when viewed from above, and is inserted upright from the front plate 69 of the sliding frame 65 into an insertion hole 144 formed at the bending point of the dogleg shape. By inserting the lever support pin 71, the lever support pin 71 is rotatably supported by the lever support pin 71, and a suppression pin 145 is provided upwardly protruding from its left end, and a suppressed pin 145 is provided from its right end. 146 is provided to protrude downward. Reference numeral 147 denotes a spring catcher protruding from the front end edge of the first cassette suppressing lever 142 at a position closer to the stacked stones than the position corresponding to the insertion hole 144;
A tension spring 149 is disposed between the frame and a spring hook 148 (see FIG. 4) formed on the front plate 69.

Note that the first cassette suppression lever 142 is located within a slight gap between the front plate 69 of the sliding frame 65 and the bottom plate 136 of the holder frame 133, and the upper part of the suppression pin 145 is placed in the holder frame 133. The formed notches 134b, 13
6a, and is positioned so as to protrude upward from the bottom plate 136 of the holder frame 133, and the pressed pin 146 is placed on the abutment plate 4 provided on the base substrate 35.
It is positioned so as to face the upper end of the second abutting piece 42b from the front. Further, the upper part of the lever support pin 71 is inserted into a hole 150 (see FIG. 3) formed in the bottom plate 136 of the holder frame 133.

As a result, the first cassette pressing lever 142 is biased by a counterclockwise rotational force by the tension spring 149, and the pressed pin 146 is pushed against the abutment piece 42.
As shown in FIG. 3 etc., the pressing pin 145 is in contact with the inner end surface of the notch 134b formed in the front plate 134 of the holder frame 133 while the cassette is not being pressed relatively forward by the holder frame 133. The first cassette pressing lever is held at a position located close to the front end surface of the portion 141 (hereinafter referred to as the "standby position" for the first cassette pressing lever).

Therefore, when the sliding frame 65 is moved from the drawn-out position to the retracted position, the first cassette suppression lever 142
As shown by the two-dot chain line in Fig. 3, the pressed pin 1
46 comes into contact with the abutment piece 42b of the abutment plate 42, and the sliding frame 65 continues to move rearward from that state, so that the pressed pin 146 is relatively pressed forward. , against the tensile force of the tension spring 149, as shown by the dashed line in FIG.

It will be rotated clockwise. and,
When the sliding frame 65 comes to the retracted position, the first cassette pressing lever 142 comes to the position shown in FIG. 4 (hereinafter referred to as the "pressing completion position" for the first cassette pressing lever). .

Therefore, the tape cassette 1 mounted on the cassette mounting 141 is pressed from the front by the pressing pin 145 of the first pressing lever 142 while the sliding frame 65 is moved from the pull-out position to the retracted position. As a result, from the temporary mounting position to the position shown in FIG. 4, that is,
The insertion hole 21° 21 formed in the lower half 4 of the cassette case 2 is positioned coaxially with the insertion hole 87.87 formed in the cassette holder 83 (hereinafter referred to as the "normal mounting position"). It will be moved.

Incidentally, when the tape cassette l is mounted on the cassette mounting section 141, the protrusion 15.15 formed on the front edge of the sliding plate 10 is attached to the cassette holder 83, as described above.
Since the cassette case is positioned so as to come into contact with the protrusion 90.90 from the front, the cassette case
Even if it is pushed backwards by 2, it will not be moved.

Further, when the tape cassette l comes to the normal mounting position, the front surface of the cassette case 2 comes to be at a position corresponding to a position slightly rearward from the front end edge of the crosspiece 75 provided on the sliding frame 65.

Then, when the tape cassette is moved to the normal mounting position, the cassette presser 128 and 128 are also moved to the cassette case 2.
Because the presser foot 1 is moved forward relative to
30 and 130 come into contact with a portion of both the left and right ends of the top surface of the cassette case 2 that is a certain distance forward from the front cover 9, that is, one side closer to the front cover 9 side. As a result, the tape cassette is stably maintained at its proper mounting position.

On the other hand, the second cassette suppression lever 143 is formed into a plate shape that is elongated in the left-right direction, and has an insertion hole in the approximately central portion thereof.
51 is formed, and a spring hook 152 is provided protruding from approximately the center of the rear edge, and a pressure bottle 153 is provided protruding downward from the right end thereof. The second cassette pressing lever 143 has a lever support pin 154 fixed to a portion near the left end of the crosspiece 75 of the sliding frame 65 inserted into its insertion hole 151, and its spring hook 152.
A tension spring 156 is passed between the frame and a spring hook 155 fixed to the guided element 77 on the left side of the sliding frame 65. Note that the left end of the second cassette suppression lever 143 is connected to the front rail support piece 49 provided on the chassis 44.
．． It is positioned so as to face the support part 49a of the left one 49 of the parts 50 from behind.

As a result, the second cassette suppression lever 143 is biased by the counterclockwise rotational force due to the tensile force of the tension spring 156, and its left end is attached to the rail support piece 143.
9, the pressing pin 153 is in a position where it comes into contact with the rear end edge of the notch 76 formed in the crosspiece 75 (hereinafter referred to as the "standby position" for the second cassette pressing lever). (say,) is held. In this state, the pressing lever 153 is positioned close to the front surface of the tape cassette l which is in the normal mounting position.

Therefore, the second cassette pressing lever 143.

When the sliding frame 65 is moved from the retracted position to the pulled-out position, its left end comes into contact with the support portion 49a of the rail support piece 49 from a certain point, and the sliding frame 65 continues from that state. When the sliding frame 65 is moved forward and rotated clockwise, and the sliding frame 65 reaches the pull-out position, the second cassette pressing lever 143 is moved to the position shown in FIG. Hereinafter, the second cassette suppression lever will come to the "pressing completion position".

Therefore, the tape cassette 1 that has come to the normal mounting position of the cassette mounting section 141 is moved from the front lid 9 side to the second cassette while the sliding frame 65 is moved from the retracted position to the withdrawn position. By being pressed by the pressing bottle 153 of the pressing lever 143, it is pushed back to the temporary mounting position.

(m, movement of the sliding plate of the tape cassette) [Figures 11, 12, 14 to 16] (m-1, movement from the closed position to the open position) First, move the sliding plate lO. The movement from the closed position to the open position will be explained.

When the tape cassette 1 is installed in the temporary mounting position of the cassette mounting section 141, as described above, the sliding plate 10 - the projecting piece 15. 90 from the front, and in this state, the insertion hole 20.20 is in contact with the first
As shown in FIG. 1, it is positioned coaxially with the insertion holes 87 and 87 formed in the bottom plate 84 of the cassette holder 83.

On the other hand, when the tape cassette 1 is mounted on the cassette mounting part 141, the protrusion 91 formed on the bottom plate 84 of the cassette holder 83 is inserted into the shallow groove 22 formed on the bottom plate part 11 of the sliding plate IO. Relatively inserted and shallow groove 2
When the tape cassette 1 is installed in the temporary installation position of the cassette installation part 141, the protrusion 91 is inserted into the shallow groove 2 as shown in FIG. 12(A).
You will reach the depths of 2.

Further, as the protrusion 91 moves toward the inside of the shallow groove 22, the engagement protrusion 29 provided on the lower surface of the tip of the lock piece 27 provided on the lower half 4 of the cassette case 2 engages the protrusion 91.
1, and the lock piece 27 is pushed upward while being bent.

At this time, the protruding piece 90.90 passes through the notch 24.24 formed at the lower edge of the front cover 9 of the tape cassette 1 and comes into contact with the protruding piece 15.15 of the sliding plate IO from the rear. be touched.

From this state, the sliding frame 65 is moved toward the retracted position, and when the pressing pin 145 of the first cassette pressing lever 142 comes into contact with the rear surface of the cassette case 2, the cassette case 2 is moved by the pressing pin 145. It will be pressed and thereby moved towards the rear.

When the cassette case 2 is moved rearward, the protrusions 90 and 90 on the cassette holder 83 side are moved forward relative to the cassette case l, so the sliding plate 10 is torsioned. The engaging protrusion 29 of the locking piece 27 engages with the sliding plate 10 as shown in the 12th IN (B). It will be pushed upward from the engagement hole 26.

As a result, the locking of the sliding plate 10 by the lock piece 27 is released. Note that the engagement hole 26 is formed with a tapered surface that slopes inward, and the engagement protrusion 2
9 can be smoothly removed from the engagement hole 26.

When the tape cassette 1 is moved to the normal mounting position, the sliding plate 10 is moved as shown in FIG.

Furthermore, as shown by the two-dot chain line in FIG. At the same time, the space 16 is opened. Also,
When the sliding plate 10 comes to the open position, the engagement protrusion 29 of the lock piece 27 is engaged with the engagement notch 25 formed at the front end of the shallow groove 22, as shown in FIG. 12(C). As a result,
This causes the sliding plate 10 to be locked in the open position.

Note that, before the first cassette suppression lever 142 starts suppressing the cassette case backward, the second cassette suppression lever 143 is returned from the suppression completion position to the standby position.

(m-2, Movement from Open Position to Closed Position) Next, movement of the sliding plate 10 from the open position to the closed position will be explained.

As described above, when the sliding frame 65 is in the retracted position, the tape cassette 1 is in the normal mounting position and the sliding plate 10 is locked in the open position.

Therefore, when the sliding frame 65 is moved from this state toward the drawer position, the first cassette suppression lever 142 is rotated counterclockwise, and the suppression bin 145 is rotated counterclockwise.
begins to move away from the rear surface of the cassette case 2 toward the front. When the second cassette suppressing lever 143 is rotated clockwise as described above, the pressing pin 153 presses the cassette case 2 forward. Then, the tape cassette 1 is shown in FIG. 12 (C
), the engagement protrusion 29 of the lock piece 27 is pushed up relatively diagonally upward by the slope 91b of the rear end of the protrusion 91 formed on the bottom plate 84 of the cassette holder 83. Therefore, lock piece 27
will be pushed upward while bending (12th
(See Figure CD). As a result, the engagement protrusion 29 is separated from the engagement notch 25. That is, the locking of the sliding plate 10 in the open position by the locking piece 27 is released.

When the sliding frame 65 reaches the pull-out position, the tape force set l is returned to the temporary attachment position, and the sliding plate lO
is in the closed position, that is, the insertion hole 21. on the cassette case 2 side.
21 will be returned to the position blocking it. In addition, sliding plate 1
0 is returned to the closed position, the engagement protrusion 2 of the lock piece 27
9 is located at a position corresponding to the engagement hole 26 of the shallow groove 22, so
It will be engaged with this. That is, the sliding plate 10 is locked in the closed position.

(n, drive system) [Figure 3, Figure 4, Figure 9] (n-4,
Structure) 157 is a motor attached to the corner of the lower surface of the base 45 of the chassis 44 where the left edge and the rear edge intersect;
The upper end of the output shaft is positioned so as to protrude upward from the upper surface of the chassis 44, and a drive pulley 158 is fixed to the upper end.

159 is a transmission gear, a pulley part 160 is integrally formed on the upper part of the transmission gear 159, and an endless belt 161 is connected between the pulley part 160 and the driving pulley 158. has been done.

162 is a so-called planetary gear mechanism. 163 is a support shaft of the planetary gear mechanism 162, and the sleeve 16 is attached to the support shaft 163.
4 is rotatably supported.

165 is fixed to the lower end of the sleeve 164, and
The input gear 166, which is combined with the transmission gear 159, is a small-diameter drive gear fixed to the axially intermediate portion of the sleeve 164.

A driven gear 167 is rotatably supported at the upper end of the sleeve 164. The driven gear 167 is formed into an axially short cylindrical shape with an open bottom and a closed top. Gear teeth 168, 168, .
69 are integrally formed.

170 is a second rotatably supported portion of the sleeve 164 between the input gear 165 and the drive gear 166.
The second output gear 170 is formed to have approximately the same diameter as the input gear 165, and is approximately 18 mm apart from each other.
A pin 171.171 is provided to protrude upward from a position 0" apart. Small-diameter planetary gears 172, 172 are rotatably supported by the pin 171.171, and these planetary gears 172 , 172 is drive gear 1
66 and the gear teeth 16 formed on the inner peripheral surface of the driven gear 167
8.168, l111.

Further, 173 is a support shaft erected from the cut and raised piece 62 formed on the base 45 of the chassis 44, and a reduction gear 174 is rotatably supported on the support shaft 173.

The reduction gear 174 has a base 17 formed in a substantially sleeve shape.
4a, a large-diameter upper input gear 174b formed at the upper end of the base 174a, and a small-diameter lower output gear 174c formed at the lower end of the base 174a, and the input gear 174b is the planetary gear. It is meshed with the first output gear 169 of the mechanism 162. Note that the output gear 174C is located on the lower surface side of the chassis 44.

175 is an intermediate gear disposed on the lower surface side of the base 45 of the chassis 44, and the intermediate gear 175 is the reduction gear 17.
No. 4 output gear 174c and the wire running gear 55 are meshed with each other.

Further, 176, 177, and 178 are reduction gears, and small gears 176a, 177a, and 178a are integrally formed in these reduction gears 176, 177, and 178, respectively. The first reduction gear 17 among these reduction gears
6 is meshed with the second output gear 170 of the planetary gear mechanism 162, and its small gear 176a is meshed with the second reduction gear 177. Further, the third reduction gear 178 is meshed with the small gear 177a of the second reduction gear 177, and the small gear 178a is connected to the rack plate 12.
The rack portion 124 is meshed with the rack portion 124 formed at 1.

(n-2, operation) When the motor 157 is rotated, the rotation is transferred to the planetary gear mechanism 162 through a transmission path such as drive pulley 158 - belt 161 - pulley part 160 of transmission gear 159 - transmission gear 159. is transmitted to the input gear 165 of the input gear 165, the sleeve 164, and the drive gear 1.
66 will be rotated.

In the planetary gear mechanism 162, when the rotation of the second output gear 170 is prevented, the driven gear 167 is rotated, and when the rotation of the driven gear 167 is stopped, the second output gear 170 is rotated. will be rotated.

That is, in a state where the drive gear 166 is being rotated,
When the second output gear 170 is prevented from rotating, the planetary gears 172.172 are only rotated at their current positions by the drive gear 166, since the movement of the pins 171.171 is stopped. Therefore, the driven gear 167 is rotated by the gear teeth 168, 168, . −
The signal is transmitted to the wire traveling gear 55 through a transmission path from the reduction gear 174 to the intermediate gear 175.

Furthermore, in a state where the drive gear 166 is being rotated,
When the driven gear 167 is prevented from rotating, the driving gear 1
Since the planetary gears 172, 172 rotated by 66 cannot send the gear teeth 168, 168, . Become. As a result, the bins 171 and 171 on which the planetary gear 172 is supported will revolve, and the second output gear 170 will be rotated. The signal is transmitted to the rack plate 121 through a transmission path such as the reduction gear 177 - and the third reduction gear 178 .

The motor 157 is rotated in the forward direction when performing a loading operation, and reversely rotated during an unloading operation, and when the motor 157 is rotated in the forward direction, the drive pulley 158 is rotated clockwise. It has become.

Therefore, when the motor 157 is rotated forward, the transmission gear 159
is rotated clockwise, the planetary gear mechanism 162
Input gear 165. Sleeve 164 and drive gear 166 will be rotated counterclockwise,
The planetary gear 172 degrees 172 will be rotated in the clockwise direction.

This rotation causes the driven gear 167 to rotate clockwise, so the reduction gear 17
4 is rotated counterclockwise, intermediate gear 175 is rotated clockwise, and wire running gear 55 is rotated counterclockwise. This causes the wire 81 to run so as to pull the sliding frame 65 rearward.

Also, since the clockwise rotation of the 'irt star gear 172.172 causes the second output gear 170 to rotate counterclockwise, the first reduction gear 176 rotates clockwise. direction, the second reduction gear 177 is rotated counterclockwise, and the third reduction gear 178 is rotated clockwise, and the rack portion 124 of the rack plate 121 is sent forward. I'm going to go.

As a result, the rack plate 121 is moved forward.

In addition, when the motor 157 is reversed, the rotating direction of each pulley and gear, the running direction of the wire 81, and the rack plate 121
The moving directions of are all opposite to the directions described above.

(o. Movement control means) [Figs. 3 to 8, 10] 179 is fixed to the rear end of the left side of the right side plate 67 of the sliding frame 65, and is moved toward the left side. This is a piece to be locked that is provided so as to protrude approximately horizontally.

Further, 180 is fixed to the side plate 67, and the side plate 67 is fixed to the side plate 67.
The cam 180 is a cam provided at a position slightly forward from a position corresponding to the lower side of the locked piece 179 in a portion near the lower edge of the locking piece 7 so as to protrude substantially horizontally toward the left side. It is shaped like a trapezoid when viewed from above.

Reference numeral 181 denotes a first lock lever for preventing the movement of the rack plate 121 at a certain point.
Reference numeral 181 consists of a base 181a that is approximately triangular when viewed from above, and a spring arm 181b that protrudes diagonally forward to the left from the front end of the base 181a. An insertion hole 182 is formed. An engagement bin 183 is erected from a substantially right-angled corner of the left rear portion of the base 18La, and the base 181a
A pressed bin 184 is erected from another corner of the right rear part of the bottle. And this first lock lever 18
1, a portion of the front one of the guide bins 127 and 127 in which the rack plate 121 is supported and protrudes downward from the rack plate 121 is inserted into the insertion hole 182, and the engagement bin 183 is inserted into the rack plate. 121, and a tension spring 185 is slidably engaged with the controlled elongated hole 123 formed in the arm 181b, and a tension spring 185 is inserted between the tip of the arm 181b and the spring hook hole 64 formed in the base 45 of the chassis 44. The rack is set up in a passed condition.

Therefore, the first lock lever 181 is biased by the rotational force in the clockwise direction by the tension spring 185, and the rack plate 121 is pushed into the guided elongated hole 122.12.
When the front end edge of the first lock lever 181 is in the position where it comes into contact with the guide bin 127, 127, that is, in the above-mentioned retracted position, a pressing force is applied to the first lock lever 181 to rotate it counterclockwise. While there is no engagement bin 18
The state in which the upper end of the rack plate 3 is engaged with the lock portion 123a formed at the front end of the controlled elongated hole 123 of the rack plate 121 is maintained. In this state, movement of the rack plate 121 is prevented.

In this state, the pressed pin 184 is positioned so as to face the cam 180 provided on the sliding frame 65 from the rear.

Reference numeral 186 denotes a second lock lever for locking the movement of the sliding frame 65. The second lock lever 186 is formed into a plate shape that is long in the front-rear direction when viewed from above, and
The rear end is bent to form a U-shape when viewed from the rear, and the U-shaped bent portion is erected from a position corresponding to the rear end of the right side of the rack plate 121 of the chassis 44. It is rotatably supported on the top of the bottle 187. Reference numeral 188 denotes an engagement pin protruding downward from the rotating end of the second lock lever 186, and reference numeral 189 denotes a suppressed pin protruding downward from a substantially central portion in the front-rear direction.

190 is a cam surface protruding from the rear end of the right side of the rack plate 121;
0a is a slope that gradually shifts to the right as it approaches the rear end.

The front end of the intermediate piece of the U-shaped bent portion of the second lock lever 186 and the bin 187 of the base 45 of the chassis 44 are erected from the left side with the rack plate 121 sandwiched therebetween. A tension spring 192 is placed between the rack and the spring hanging bin 191.

Therefore, the second lock lever 186 is biased by the clockwise rotational force of the tension spring 192, and this rotational force maintains the pressed pin 189 in contact with the right side surface of the rack plate 121.

Note that when the rack plate 121 is at the rear end position, the suppressed pin 7189 of the second lock lever 186 is in contact with the front end of the cam surface 190 of the rack plate 121.

(p, cassette loading operation) (p-1, loading) Therefore, the loading operation of the tape cassette 1 by the above-described cassette loading device 43 is performed as follows.

When a command is issued to pull out the sliding frame 65, the motor 157 is reversely rotated, and the sliding frame 65 is moved to the pulled-out position. As a result, most of the cassette mounting section 141 is pulled out of the outer casing 33.

In this state, the tape cassette 1 is mounted on the cassette mounting section 141.

Therefore, when a command is given to load the tape cassette 1, the motor 157 is rotated in the normal direction. and,
In this state, since the movement of the rack plate 121 is prevented by the first lock lever 181, the rotation of the second output gear 170 of the planetary gear mechanism 162 is prevented, and therefore, The driven gear 167 will be rotated.

As a result, the sliding plate 65 is moved to the retracted position as described above, and in the process of this movement, the tape cassette 1 is moved to the normal mounting position, and the pressers 130, 130 of the cassette presser 128, 128 , the upper surface of the cassette case 2 comes to a position where it presses a position substantially midway between the center and the front end in the front-rear direction of both the left and right ends of the upper surface of the cassette case 2 downward. Furthermore, the sliding plate 10 is relatively moved to the open position.

Then, when the sliding frame 65 is moved to the retracted position,
First, the cam 180 provided on the sliding frame 65 presses the pressed pin 184 of the first lock lever 181 diagonally rearward to the left, so that the first lock lever 181
is rotated counterclockwise, whereby the engagement pin 183 is disengaged from the lock portion 123a of the controlled elongated hole 123 of the rack plate 121, and the lock to the rack plate 121 is released. Immediately after this release, the guided elements 77, 78 of the sliding frame 65 come into contact with the rail support pieces 51, 52 on the rear side of the chassis 44. That is, the sliding frame 65 reaches the retracted position.

This prevents the driven gear 167 from rotating in the planetary gear mechanism 162.

Since rotation of the second output gear 170 is allowed, the second output gear 170 will now be rotated. Therefore, the rack plate 121 is moved forward.

When the rack plate 121 is moved forward, the front end slope 190a of the cam surface 190 presses the pressed pin 189 of the second lock lever 186 diagonally forward to the right. The lock lever 186 is rotated counterclockwise, and the engagement pin 188 is positioned so as to contact the front edge of the locked piece 179 provided on the sliding frame 65 from the front. . The second lock/<-186 is maintained in that state by the cam surface 190.

In this state, the sliding frame 65 will be locked in its retracted position.

Then, as the rack plate 121 is moved forward, the pressing protrusion 126 presses the pressed object 117 of the slider 116 forward as described above, so that the cassette holder 83 is moved forward. It will be moved to the above-mentioned loading completion position. Therefore, the tape cassette is lowered toward the base substrate 35. Then, the cassette positioning bins 40 and 41 provided on the base board 35 are inserted into the positioning holes formed at the front end of the lower half of the cassette case, and the front cover 9 is opened using a member (not shown). is moved to a position where the space 16 is opened, and
The engagement shaft portions 37a, 38a of the reel drive shaft 37.38 are engaged with the reel hub 6.7 in the cassette case 2 through the insertion hole 21.21 of the cassette case 2.

Thus, the tape cassette 1 is mounted in a predetermined position on the audio tape recorder 32 in a predetermined state.

The rotation of the motor 157 is stopped in response to a predetermined detection signal from a detection means (not shown) that detects when the cassette holder 83 has reached the loading completion position.

Cp-2-Unloading) When a command to perform unloading is issued from a state where the cassette holder 83 is at the loading completion position, the motor 157 is reversely rotated.

Incidentally, when the magnetic tape 5 is being pulled out from the tape cassette 1, the motor 157 is rotated after the magnetic tape 5 is rewound into the tape cassette 1.

In this state, the sliding frame 65 is prevented from moving forward because the engagement pin 188 of the second lock lever 186 is in contact with the front edge of the locked piece 179 from the front. It is in a locked state, and rotation of the driven gear 167 is therefore prevented.

Therefore, when the motor 157 is reversed, its rotation is transmitted from the second output gear 170 of the planetary gear mechanism 162 to the rack plate 121, causing the rack plate 121 to move rearward, i.e.
It will be moved to the standby position. As a result, the cassette holder 83 is moved to the raised position as described above.

Then, when the rack plate 121 is returned to the retracted position, the front end of the cam surface 190 of the rack plate 121 engages the second lock lever.
Since it corresponds to the pressed bin 189 of 186,
The second lock lever 186 is rotated clockwise by the tensile force of the tension spring 192, and the engagement pin 188 is in front of the front edge of the locked piece 179 provided on the sliding frame 65. You will have to run away to the left.

Therefore, the sliding frame 65 by the second rod lever 186
will be unlocked.

Then, in the planetary gear mechanism 162, the second output gear 170 is prevented from rotating, and the rotation of the driven gear 167 is no longer blocked, so the driven gear 167 is now rotated. Then, wire running gear 55
will be rotated clockwise. As a result, the sliding frame 65 is moved toward the drawn-out position, and in this movement process, as described above, the tape cassette 1 is returned from the normal mounting position to the temporary mounting position, and the sliding frame 65 is moved toward the drawn-out position. The plate 10 will be moved to the closed position.

Therefore, the tape cassette 1 is pulled out of the outer casing 33 with the sliding plate 10 in the closed position.

Note that the rotation of the motor 157 is stopped in response to a predetermined detection signal from a detection means (not shown) that detects that the sliding frame 65 has reached the pulled-out position.

(G. Effects of the Invention) As is clear from the above description, the cassette loading device of the present invention has a sliding member that is moved between a horizontally pulled out position and a retracted position, and a sliding member that is perpendicular to the sliding member. and a cassette holding means supported so as to be movable in the direction, and loading the cassette by moving the sliding member to a retracted position and then moving the cassette holding means downward. The cassette holding means,
The substantially central portions of each are rotatably connected to each other, the upper end of one is rotatably connected to a sliding member, and the lower end is slidably engaged with an elongated hole formed in the cassette holding means. supported on the sliding member by two arms, the upper end of which is slidably engaged with an elongated hole formed in the sliding member, and the lower end of which is rotatably connected to the cassette holding means; Particularly, according to the present invention, the cassette holding means is moved in the vertical direction by changing the mutual opening angle of the two arms.
When the two arms are opened to each other and their angles are changed, the lower ends of each arm are rotated around the position where these arms are connected to each other, but the directions of movement are opposite to each other. The cassette holding means connected to these lower ends are moved in the vertical direction without drawing a rotation locus.

Therefore, since the cassette held by the cassette holding means is moved in the vertical direction, the cassette and the member to be engaged with it from below can be easily and accurately aligned with each other. I can do it.

Since the cassette holding means can be moved in the vertical direction even when the arm is rotated, the maximum stroke of the movement of the cassette holding means can be made approximately equal to the length of the arm. Therefore, even if the length of the arm is made relatively short, a sufficient movement stroke of the cassette holding means can be achieved.

In the above-described embodiment, the central portions of the two arms are connected to each other, but in the present invention, it is not necessarily necessary to connect the approximately central portions of the two arms to each other. If necessary, it is sufficient to connect corresponding positions of each arm between the position supported on the sliding member side and the position supported on the cassette holding means side.

Further, in the above embodiment, the present invention is applied to a cassette loading device for loading a tape cassette, which is equipped with a sliding plate that is held in a position that closes an insertion hole formed in a cassette case when not in use. However, the present invention is not limited to such an example, and can be applied to a cassette loading device for loading various tape cassettes, and furthermore, in some cases, a magnetic disk cassette.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the cassette loading device of the present invention, and FIG. 1 is a sectional view taken along the line I-■ in FIG. 3, and FIG. A perspective view showing the appearance with the cassette holder pulled out of the outer casing, Figure 3 is a plan view of the cassette holder pulled out of the outer casing, and Figure 4 shows the cassette holder pulled into the outer casing. FIG. 5 is a schematic plan view with the cassette holder at the loading completion position, FIG. 6 is a perspective view of the chassis, and FIG.
The figure is a perspective view of the first lock lever, FIG. 8 is a perspective view of the sliding frame partially disassembled and partially cut away, and FIG. 9 is a sectional view taken along the line ■-IX in FIG. 3. Figure 10 shows the movement from (A) to (C) when the tape cassette is loaded.
), and FIG. 3(A) is a sectional view taken along the line X(A)-X(A) in FIG. The same figure (B) is a cross-sectional view taken along the line X (B) -
), Figure 11 is a cross-sectional view of the main part along line ■-X[ in Figure 3, and Figure 12 shows the movement of the sliding plate provided in the tape cassette from 13 to 16 show an example of a tape cassette, FIG. 13 is a perspective view of the tape cassette when not in use, and FIG. 14 is a perspective view of the main part shown in step D). FIG. 15 is a perspective view seen from below in a state when not in use, FIG. 15 is a perspective view from below in a state in use, and FIG. 16 is a bottom view in a state when not in use. Explanation of symbols■1111m cassette 7, 43...Cassette loading device, 65...Sliding member, 83...Cassette holding means, 93.94...Elongated hole (of the cassette holding means), 95 .96・φ・arm, 97.98・fist・arm,

Claims (1)

[Scope of Claims] A cassette comprising a sliding member that is moved between a pulled-out position and a retracted position in a horizontal direction, and a cassette holding means supported by the sliding member so as to be movable in a vertical direction. The loading is performed by moving the sliding member to the retracted position and then moving the cassette holding means downward, and the cassette holding means are arranged such that substantially central portions of the cassette holding means are rotatable relative to each other. The upper end of one is rotatably connected to the sliding member, the lower end is slidably engaged with a long hole formed in the cassette holding means, and the upper end of the other is slidable. The sliding member is supported by two arms that are slidably engaged with elongated holes formed in the member and whose lower ends are rotatably connected to the cassette holding means, and the mutual opening angle of the two arms is adjusted. A cassette loading device characterized in that the cassette holding means is moved in the vertical direction by changing the cassette loading device.