JPS6231058A - Cassette loading device - Google Patents

Abstract

PURPOSE:To easily take a tape cassette out by providing a cassette pressing means which is operated by the movement of a cassette holding means to press and return the tape cassette to its initial position. CONSTITUTION:The cassette pressing means 143 is provided which is operated by the movement of the cassette holding means 83 when the cassette holding means 83 is moved from a loading completion position to an unloading completion position to press and return the tape cassette 1 to its initial position. Therefore, the tape cassette 1 which is moved from the initial position in the cassette holding means 83 is returned by the cassette pressing means 143 to the initial position in the cassette holding means 83 when unloaded. Consequently, the tape cassette is easily taken out when already unloaded.

Description

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

A. Industrial field of application B0 Overview of the invention C0 Background technology 0 Problems to be solved by the invention E1 Means for solving the problems F. Example a Tape cassette [Figures 11 to 16] b. PCM audio tape recorder [Fig. 2] C. Base board [Fig. 1, Fig. 3, Fig. 5, Fig. 8 to 10] d. Cassette loading device [Fig. 1, Fig. 3 to [Fig. 10] e, Chassis [Fig. 1, Fig. 3 to Fig. 6, Fig. 8 to Fig. 10] f, Sliding frame [Fig. 1, Fig. 3, Fig. 4, Fig. 7] 9th to 9th
g, Wire [Fig. 1, Fig. 3, Fig. 5, Fig. 10] h, Cassette holder [Fig. 1 to Fig. 4, Fig. 7 to Fig. 9, Fig. 11, Fig. 12] ] i. Holder support arm [Fig. 3, Fig. 4, Fig. 7 to 9] j. Holder lifting means [Fig. 1, Fig. 3 to Fig. 5, Fig. 7 to Fig. 9] k. , Cassette holder [Fig. 1, Fig. 3, Fig. 7 to 9] t, Holder frame [Fig. 1 to 3, Fig. 8, Fig. 9] m, Cassette mounting section [Fig. 1 , Fig. 2, Fig. 8, Fig. 9] n, Cassette pressing lever [Fig. 1, Fig. 3, Fig. 7 to Fig. 9] n-1, First cassette pressing lever [Fig. 3, 7 to 9] n-2, Second cassette pressing lever [Fig. 1, 3, 7] 0. Movement of tape cassette sliding plate [Fig. 11, $12
Figures, Figures 15 and 16] 6-1. Movement from closed position to open position 0-2. Movement p from the open position to the closed position, drive system [Figs. 1, 3, and 10] p-1, configuration p-2, operation q, control means [Figs. 1, 3 to 7] FIG. 9] r. Cassette loading operation r-1, loading r-2, 7 unloading G0 Effects of the invention (A. Field of industrial application) The present invention relates to a novel cassette loading device. Specifically, the tape cassette is held in the cassette holding means and the cassette holding means is moved to mount the tape cassette to a predetermined mounting position, and the tape cassette is moved from the initial position within the cassette holding means. An object of the present invention is to provide a cassette loading device which returns a tape cassette to its initial position within a cassette holding means when unloading a cassette.

(B. Summary of the Invention) The cassette loading device of the present invention is operated by the movement of the cassette holding means when the cassette holding means is moved from the loading completion position to the unloading completion position, and by being operated. A cassette pressing means is provided for pressing the cassette and thereby returning the tape cassette to its initial position.

(C, Background Art) For example, when a tape cassette for PCM (pulse code modulation) recording is not in use, it is held in a position that closes the insertion hole for the reel engagement shaft formed in the cassette case. There is a tape cassette that includes a sliding plate that needs to be moved to a position where the insertion hole is opened. This is due to the following reasons.

There are various types of tape cassettes such as audio tape cassettes and video tape cassettes, but the cassette cases of these tape cassettes usually have a reel engagement shaft provided on the deck side in the engagement hole formed in the tape reel. A hole for engaging the reel, that is, an insertion hole for inserting the reel engaging shaft is formed.

By the way, these tape cassettes that house magnetic tape as a recording medium do not like the intrusion of dust, especially
For example, due to the recording method of tape cassettes for PCM recording, if even a small amount of dust adheres to the magnetic tape and the recording signal of that part drops out, it will be impossible to play that part. The inside of the cassette case must be kept as dust-free as possible. Therefore, tape cassettes for PCM recording are generally provided with a sliding plate for opening and closing the insertion hole of the cassette case. That is, while the tape cassette is not in use, the sliding plate is placed in a position (
(hereinafter referred to as the "closed position") to prevent external dust from entering the cassette case.
Only when the cassette case is used, the sliding plate is moved to a position where the insertion hole of the cassette case is opened (hereinafter referred to as the "open position").

Therefore, a cassette loading device for loading a tape cassette with such a sliding plate is designed such that the sliding plate can be moved to the open position before the cassette is loaded into the predetermined loading position. It is configured.

Therefore, in a cassette loading device for loading such a tape cassette, the cassette case of the tape cassette is moved relative to the cassette holding means while the cassette holding means is moved to a predetermined cassette mounting position, and the cassette case is moved relative to the cassette holding means. Some devices have a sliding plate that moves to the open position.

(D. Problem to be Solved by the Invention) In a device like the above-mentioned cassette loading device, in which the tape cassette is moved within the cassette holding means, if the tape cassette is unloaded in that state, the tape I'm used to not being able to take out the cassette.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the cassette loading device of the present invention provides the following features: when the cassette holding means is moved from the loading completion position to the unloading completion position; A cassette pressing means is provided which is operated by the movement of the cassette holding means and presses the tape cassette by being operated, thereby returning the tape cassette to its initial position.

Therefore, in the cassette loading device of the present invention,
During unloading, the tape cassette that has been moved from the initial position within the cassette holding means is returned to its initial position within the cassette holding means by the cassette suppressing means. Easier to take out.

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

Before entering into a description of the cassette loading device, first a description will be given of the tape cassette that is detachably attached to the cassette loading device.

(a, tape cassette) [Figures 11 to 16] 1 is a tape cassette for PCM audio.

Reference numeral 2 denotes a cassette case, which is made up of an upper bar 23 and a lower bar 24 made of synthetic resin and connected by screws or the like.

Inside the cassette case 2, a pair of reel hubs 6.7 around which the magnetic tape 5 is wound are rotatably housed. In addition, 8
is a transparent window plate provided on the upper bar 23, 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, . . . are guide protrusions that are protruded from the inner surface of the side plate portion 12.12 of the sliding plate 10 so as to be aligned in a straight line in the front-rear direction, and the guide protrusions 13.13, . . . is slidably engaged with guide grooves 14.14 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.
It is attached so that it can slide freely in the front and rear directions.

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, is elastically engaged with the piece 19 from the rear. , the elastic force of this torsion spring 18 moves the sliding plate 10 into the space 1
6 is urged to move in the closing direction, that is, forward.

Furthermore, the bottom plate portion 11 of the sliding plate 10 has two insertion holes 20.
20 is formed, and when the sliding plate 10 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 bar 24.
．． 21 (hereinafter, the sliding plate lO in this state
This position is referred to as the "open position"), so that an engagement shaft for driving a reel provided in the PCM audio tape recorder can enter into the cassette case 2. Then, the sliding plate 10 moves forward, and as shown in FIG. 14, the sliding plate 10 closes the lower part of the space 16 of the cassette case 2.

Insertion hole 20.20 of sliding plate lO and insertion hole 2 of lower half 4
1.21 are shifted from each other, so that the insertion hole 21.21 of the lower half 4 is closed by the bottom plate part 11 of the sliding plate 10 (hereinafter referred to as the sliding plate 10 in this state).
The position is called the "occlusion position").

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 close 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. 14, the lock piece 27 is prevented from being bent more than necessary and broken. However, as shown in FIG. 14, when the sliding plate 10 is closed, An engagement protrusion 29 at the tip of the lock piece 27 fits into an engagement hole 26 provided in the sliding plate 10, and the sliding plate 10 is locked to prevent it from moving 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 half 3 near the front edge so as to extend in the left-right direction.

(b, PCM Audio Chi Precoder) [Second
Figure] 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) [FIGS. 1, 3, 5, 8 to 10] 35 is a base board provided inside the outer casing 33 of the recorder 32. 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 that are disposed on the upper surface of the base base Mi35 at a position approximately in the middle between the opening 36 and the head drum 39, with a predetermined distance # left and right from each other.

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 protruding plate 42 consists of a mounting piece 42a and a vertically extending abutment piece 42b.
The mounting piece 42a is fixed to the base board 35 by fixing means such as screws, with the mounting piece 42a facing forward. The abutment plate 42 is a member for relatively rotating the first cassette press lever by abutting one end of the first cassette press lever, which will be described later, against the abutment piece 42b of the abutment plate 42. .

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, so that 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 10] 43 is a cassette loading device. The cassette loading device 43 includes a cassette holder into which the tape cassette 1 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 pressing lever for pressing the cassette case 2 of the tape cassette 1 mounted on the cassette holder is provided.

(e, chassis part) [Figures 1, 3 to 6, 8
10] 44 is a chassis. The chassis 44 has a rectangular outer shape that is slightly elongated in the front-rear 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 pillars 48, 48, 48. are provided between the parts near the left and right edges of the base board 35 and the base board 35. (48) (only three are shown in the drawing) are fixed to the base substrate 35 at a predetermined distance above the base substrate 35 and facing each other in parallel with the base substrate 35. ing.

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. Note that these rail support pieces 49.
The vertically extending support part 4 of the left one 49 of 50
The support portion 9a is formed slightly higher than the support portion 50a of the right side portion 50.

51 and 52 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 a part of the left side edge of the base 45, and the right side 52 is formed from the right end of the rear edge of the base 45. It is formed in 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. The wire running gear 55 has a pulley portion 56 integrally formed at its lower part, and the right edge and rear edge of the chassis 44 intersect. It is rotatably supported by a gear support pin 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 pin 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 is a pulley support pin 6 that is provided to protrude downward from the root of the right side piece 46 of the chassis 44 to the base 45.
1 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 so as to partially cut and raise 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 approximately the center toward the practice side;
This is a spring hanging hole formed at a position close to the notch 63 of the spring.

The chassis 44 is located inside the outer casing 33 so that its 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 approximately the same as the lower edge of the outlet 34. It is placed at a height.

(f, sliding frame) [Figs. 1, 3, 4, 7 to 9] 65 is a guide rail 53 provided on the chassis 44.
．． It is a sliding frame that is slidably supported by 54.

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.
, salary, etc. are provided 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.
．． The side plate 66. is screwed to the side plate 68,.O.
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 slightly to the left of the notch 70 . Also, 72
．． Reference numeral 72 denotes screw holes formed at both left and right ends of the front plate 69.

Support pieces 73 and 73 are formed so as to project horizontally inward from the central part of the upper edge of the side plates 66 and 67 toward the rear side.
A screw hole 74.74 is formed in the front end of 3.73.

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. The right guide rail 54 provided on the chassis 44 is inserted into the insertion holes 78a, 78a of the right guided element 78, and the left guide rail 54 is inserted into the grooves 77a, 77a of the left guided element 77. 53
are slidably engaged.

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, 78 come into contact with the front rail support pieces 49, 50 (hereinafter referred to as the "draw-out position"), the positions shown in FIGS. As shown in FIGS. 8 and 9(A), the front portion 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 element 77. 78 comes into contact with the rear rail support pieces 51 and 52 (hereinafter referred to as the "retracted position")
), as shown in FIG. 3, FIG. 4, FIG. 9(B) and FIG. 9(C), the whole is located inside the outer casing 33, and the front thereof is The front edge of the plate 69 is the drawer a3
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 latching pin 80 is provided to protrude from the lower end of the inner surface of the portion extending in the direction.

(g, wire) [Fig. 1, Fig. 3, Fig. 5, Fig. 10] 81 is a wire. The wire 81 has both ends 81a
, 81b are formed in a loop shape, and one end portion 81a
is engaged with 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 gLa, 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, wound around the wire boob 9-58, and then folded back, and the other end 81b is engaged with the hook pin 80 of the wire hook 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 wire retaining plate 79 is moved forward, and thereby the sliding frame 65 is 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 holder) [Figs. 1 to 4, Figs. 7 to 9, Figs. 11 and 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 ends of the insertion holes 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 above-mentioned portion upward.

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.

(i, holder support arm) [Figures 3, 4, 7 to 9] 95, 96, 97 and 98 are the cassette holders 83
These arms 95, 96.
Of the 97 and 98, the left ones 95 and 96 and the right ones 97 and 98 are connected to each other at substantially central portions in the longitudinal direction so as to be rotatable with each other by pins 99 and 100, respectively.

Reference numerals 101 and 102 refer to long guide holes formed in portions of the left and right side plates 66 and 67 of the sliding frame 65 near the upper edges thereof, which are slightly closer to the front than the central portion in the front-rear direction, so as to extend along the front-rear direction. Moving pins 103 and 104 are slidably engaged with the guide elongated holes 101 and 102.

Furthermore, reference numerals 105 and 106 are fixing pins provided so as to protrude outward from the front ends of the left and right side plates 85 and 86 of the cassette holder 83, respectively. Among the arms 95 and 96 and 97 and 98, the arms 95 and 97 located on the side of the reaction force set holder 83, respectively, have their upper ends inward from the guide elongated holes 101 and 102 of the movable pins 103 and 104. It is rotatably connected to the protruding part, and its lower end is connected to the fixed bin 105, 106.
is rotatably connected to.

Further, 107 and 108 are the side plates 8 of the cassette holder 83.
5.86 is a moving pin that is slidably engaged with the guide slot 93.94 formed in the guide slot 101 of the side plate 66.67 of the sliding frame 65.
．． These fixing pins are provided so as to protrude inwardly from positions a certain distance forward from the front end of 102. Of the arms 95 and 96 and 97 and 98, the arms 96 and 98 located on the inside have their lower ends connected to the movable pins 107.1 on the cassette holder 83 side.
08, and its upper end is connected to the sliding frame 6.
It is rotatably connected to the fixing pins 109 and 110 on the 5 side.

Thus, the side plates 85 and 86 of the cassette holder 83 are supported by the side plates 66 and 67 of the sliding frame 65 via arms 95 and 96 and 97 and 98 that are connected to cross each other.

By changing the mutual opening angles of the arms 95 and 96 and 97 and 98, they are supported by the sliding frame 65 in a vertically movable state.

(J, Holder lifting/lowering means) [Figures 1, 3 to 5, 7 to 9] 111.111 is a support part of the side plate 66, 67 of the sliding frame 65 near the lower edge. These are arm support pins that project horizontally inward from positions corresponding to the lower parts of the pieces 73 and 73.

112 is a tension spring, and the tension spring 1
12 has one end connected to the arm support pin 111.111.
The other end is attached to the left side of the sliding frame 6.
The movable pin 103 is slidably engaged with a guide elongated hole 101 formed in the left side plate 66 of 5.

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 pin 99. Therefore, a rotational force acts on the arms 95 and 96 in a direction that increases 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 pin 107 and the fixed pin 105. It turns out.

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

Note that the cassette/case holder 83 is in a position where the movable pin 103 is in contact with the rear end edge of the guide slot 101 while no downward pressure is applied to the cassette/case holder 83. That is, the bottom plate 84 is the front plate 69 of the sliding frame 65.
It will be held at a slightly higher position (hereinafter referred to as the "raised position").

113.113 is a rotating arm. The rotating arm 11
3.113, the lower part of the rear end is the arm support pin 1
11, 111, and is rotatably supported at the tip of 11, 111.
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 the rotating arm 113.113 and extends along the longitudinal direction of the rotating arm 113.113.
The notches 115, 115 are slidably engaged with fixing pins 105, 106 protruding from the side plates 85, 86 of the cassette holder 83.

Therefore, the rotational force exerted on the left arm 95.96 by the tension spring 112 is transferred to the right arm 97.9 via these rotation arms 113.113.
8 will be affected in the same way. As a result, the upward moving force on the cassette holder 83 by the tension spring 112 and the downward pressing force on the cassette holder 83 by the slider, which will be described later, are equally applied to the left and right side plates 85 and 86, and the cassette holder 83 It is designed so that distortion, inclination, etc. do not occur when the 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 movable bin 104, it becomes movable in the front and back direction, and when the cassette holder 83 is at the above-mentioned raised position, the movable bin 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 are guide pins that are erected at a portion of the base 45 of the chassis 44 that corresponds to a position closer to the practice side from the notch 63 formed at the front edge of the base 45 and spaced apart from each other in the front and rear direction. , the rack plate 121 is supported by the guide pins 127, 127 so as to be movable in the front-rear direction by slidably engaging the guide pins 127, 127 in the guided elongated holes 122, 122. ing.

The rack plate 121 is located at a position (hereinafter referred to as the "retracted position") where the front edges of the guided elongated holes 122 and 122 abut against the guide pins 127 degrees 127 before the sliding frame 65 comes to 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 bin 104 with which the front end of the slider 116 is engaged is moved forward. Therefore, since the upper end of arm 97 is moved to reduce the distance between it and the upper end of another arm 98, arms 97 and 98 are rotated in a direction that reduces the angle at which they open from each other. , arm 97
．． 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 slider 116 is prevented from moving forward as the rear end edge of the elongated hole 119 comes into contact with the guide pin 120, and in this state, the cassette holder 83 is moved to the reel drive shaft 37. The engagement shaft portions 37a and 38a of 38 are relatively connected to the cassette holder 83.
It is lowered through the insertion holes 87, 87 formed in the bottom plate 84 to a position (hereinafter referred to as the "loading completion position") where it protrudes upward to some extent from the bottom plate 84.

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.

(k, cassette holder) [FIGS. 1, 3, 7 to 9] 128.128 is a cassette holder provided on the cassette holder 83. Reference numeral 129.129 is a supporting piece formed of a 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 supporting piece 129.129 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.

Reference numeral 130.130 is a presser made of synthetic resin and formed into a substantially inverted conical shape, and pins 131, 131 are provided to protrude upward from the upper surface of the presser 130.130. Then, the presser foot 130° 130 holds the pins 131, 13
1 is inserted from below into a hole 132 (132) formed in the horizontally extending portion of the support piece 129 (132) (only the hole formed in the right support piece is shown in the drawing). At the same time, by caulking the portion protruding from the chain hole 132, (132), the support piece 129.1
It is fixed at 29.

(L, Holder frame) [FIGS. 1 to 3, FIGS. 8 and 9] 133 is 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 the same as that of the troughs 135a, 135a of the side portions 135.135. A notch 13 approximately half the length in the front-rear direction and formed in the front plate 134
A kerf 136a is formed in a portion corresponding to 4b.

137 is a top plate whose both ends are continuous with the respective rear ends of the upper surface of the side portion 135.135, and the top plate 137 and the side portion 135.
A substantially rectangular notch 138 is provided at the corner where 135 intersects with
．． 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. At the same time, the upper end of the cassette presser 128°128 is connected to 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.

(m, cassette mounting part) [Fig. 1, Fig. 2, Part 8, Fig. 9] However, when the cassette holder 83 is in the raised position, the bottom plate 84 of the cassette holder 83 and the holder frame 133 The bottom plate 136, each inner surface of the side parts 135, 135, and the rear surface of the front plate 134 constitute a cassette mounting section 141 in the cassette loading device 43.

When the sliding frame 65 comes to the drawer position, the cassette mounting portion 141 is positioned so as to protrude from the drawer opening 34 of the outer casing 33 to the outside of the outer casing 33. Mounting and removal of the power set 1 will be carried out in this state.

That is, in a state where the cassette mounting part 141 is pulled out of the outer casing 33, the tape cassette 1 is placed with its front cover 9 facing backward, and the 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 positioned between the tape cassette 1 and the tape cassette 1
41, it is attached as shown by the thick two-dot chain line in FIG.

The position of the tape force set l in the state where the tape 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.

Then, in the state in which the tape force setter) 1 is attached to the temporary attachment position, the sliding plate 10 provided on the tape force setter) 1 has a protruding piece 15. The insertion hole 20.20 is inserted into the insertion hole 87.87 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 contact with both left and right ends of the front end of the upper surface of the cassette case 2 from above.

(n, cassette pressing lever) [Figs. 1, 3, 7 to 9] 142 is a first cassette pressing lever, and 143 is a second cassette pressing lever.

The first cassette pressing lever 142 is used to press the tape cassette l attached to the cassette mounting portion 141 while the sliding frame 65 is being moved from the pull-out position to the retracted position.
This is a lever for pressing the cassette case 2 of the tape cassette 1 rearward, thereby moving the sliding plate 10 of the tape cassette 1 to a relatively open position.

Further, the second cassette pressing lever 143 is connected to the sliding frame 65
This is a lever for pressing the cassette case 2 forward in the process of being moved from the retracted position to the withdrawn position, thereby relatively returning the sliding plate 10 to the closed position.

(n-1, first cassette pressing lever) [Fig. 1, 3
FIGS. 7 to 9] The first cassette pressing lever 142 is approximately "<" when viewed from above.
”, and an insertion hole 144 is formed at approximately the bending point of the “<” character, and a pressing pin 145 is erected from the left end, and a pressed pin is inserted from the right end. 146 is provided to protrude downward. Reference numeral 147 denotes a spring hook that projects horizontally from a portion of the front edge of the pressing lever 142 that is closer to the practice side than the position corresponding to the insertion hole 144.

The lever support pin 71 erected from the front plate 69 of the sliding frame 65 is inserted into the insertion hole 144 of the first cassette pressing lever 142 , and the spring hook 14 is inserted into the first cassette pressing lever 142 .
7 and a small spring-loaded pin 148 (see FIG. 3) that protrudes from a portion of the sliding frame 65 near the rear edge of the front plate 69, slightly to the left of the lever support pin 71. A tension spring 149 is attached.

The first cassette pressing lever 142 is located in 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 suppressing pin 145 is located in the front of the holder frame 133. Notch 1 formed in plate 134b
34b, a notch 136a continuous thereto, that is, the bottom plate 1
The pressed pin 146 is positioned so as to protrude upward through a notch 136a formed in the
is positioned so as to face the upper end of the abutment piece 42b of the abutment plate 42 provided on the base substrate 35 from the front.

As a result, the first cassette pressing lever 142 is biased with a counterclockwise rotational force due to the tensile force of the tension spring 149, and the pressed pin 146 abuts against the abutment piece 42b and moves relatively forward. As shown in FIG.
3 (hereinafter referred to as the position where the first cassette pressing lever 142 contacts the front end surface of the notch 134b formed in the front plate 134 of
(referred to as the "standby position").

Note that the upper part of the lever support pin 71 on which the first cassette pressing lever 142 is supported is connected to the bottom plate 136 of the holder frame 133.
It is inserted into a hole 150 (see FIG. 1) formed in the hole 150 (see FIG. 1). Further, when the sliding frame 65 is in the drawer position, the pressing lever 142 is held at the standby position, so the pressing pin 145 is positioned close to the front end surface of the cassette mounting section 141 from the front. It turns out. Therefore,
In this state, the suppression bin 145 does not get in the way of mounting the tape cassette 1 on the cassette mounting section 141.

Therefore, the first cassette pressing lever 142
5 is moved from the drawn-out position to the retracted position, from a certain point, as shown by the two-dot chain line in FIG.
The pressed pin 146 is the abutment piece 42b of the abutment plate 42.
from the front, and the sliding frame 65 is pulled from that state! t#l! By being moved rearward, the pressed pin 146 is pressed relatively forward by the abutment piece 42b, so that the tension spring 149
It is rotated clockwise against the tensile force of , as shown by the dashed line in FIG. Then, when the sliding frame 65 comes to the retracted position, the first cassette suppression lever 142 moves its pressing pin 14 as shown in FIG.
5 comes into contact with the open end of the notch 92 formed on the front edge of the bottom plate 84 of the cassette holder 83 (hereinafter referred to as the "pressing completion position" for the first cassette pressing lever 142). .

Therefore, the cassette case 2 of the tape cassette 1 mounted on the cassette mounting section 141 is moved from the front by the pressing pin 145 of the first cassette pressing lever 142 while the sliding frame 65 is moved from the drawn-out position to the retracted position. You will be under pressure.

As described above, when the tape cassette 1 is mounted on the cassette mounting section 141, the protruding piece 15.15 formed on the front edge of the sliding plate lO of the tape cassette 1 touches the bottom plate 84 of the cassette holder 83. Provided projecting piece 90.90
Since the cassette case 2 is positioned so as to be in contact with it from the front, even if the cassette case 2 is pressed rearward, it will not be moved rearward.

Therefore, while the sliding frame 65 is moved from the drawn-out position to the retracted position, only the cassette case 2 of the tape cassette 1 is moved rearward within the cassette mounting section 141, so that the sliding plate 10 is moved relatively forward and the sliding frame 65 is in the retracted position, the tape cassette 1 is moved so that the insertion holes 21 and 21 of the cassette case 2 are connected to the cassette holder, as shown in FIG. 83 (hereinafter referred to as the "regular mounting position" for the cassette mounting section 141).

Incidentally, when the tape cassette 1 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 of the sliding frame 65.

Then, when the tape cassette 1 is moved to the normal mounting position, the cassette pressers 128, 128 press the middle portions of both left and right ends of the upper surface of the cassette case 2 from above. The state in which the tape cassette 1 has come to the normal mounting position is stably maintained.

(n-2, second cassette pressing lever) [Fig. 1, 3
FIG. 7 ] The second cassette pressing lever 143 is formed into a plate shape elongated in the left-right direction, and has an insertion hole 151 formed approximately in the center thereof, and a spring folded piece extending from the center of the rear side edge. 15
2 is provided protrudingly, and a pressing pin 153 is provided protruding downward from its right end. Then, the cassette pressing lever 143 inserts the crosspiece 7 of the sliding frame 65 into the insertion hole 151.
By inserting the lever support pin 154 fixed at a position approximately midway between the center part and the left end of the crosspiece 75
The spring folded piece 152 is rotatably provided at a position near the left end of the upper surface, and is tensioned between the spring folded piece 152 and the spring folded piece 155 fixed to the upper surface of the guided element 77 on the left side of the sliding frame 65. The spring 156 is loaded.

Therefore, the second cassette pressing lever 143 is constantly urged to rotate in the counterclockwise direction by the tensile force of the tension spring 156, and a pressing force is applied thereto to rotate it in the clockwise direction. While not being pressed, the pressing pin 1.53 is in a position where it comes into contact with the rear edge of the notch 76 formed in the crosspiece 75 (hereinafter referred to as the "standby position" for the second cassette pressing lever 143). will be held.

Therefore, when the first cassette pressing lever 113 is in the standby position, the pressing bottle 153 is positioned close to the front surface of the cassette case of the tape cassette 1 in the normal mounting position from the rear. Become.

The left end of the second pressing lever 143 is positioned so as to face the support portion 49a of the left rail support piece 49 of the front rail support pieces 49,50 provided on the chassis 44 from behind. , second cassette pressing lever 143
When the left end portion thereof abuts against the rail support piece 49 from behind, it is pressed relatively rearward by the rail support piece 49, and is thereby rotated clockwise.

Therefore, the second cassette pressing lever 143
5 is in the retracted position, it is held in the standby position.

Therefore, the second cassette pressing lever 143
5 is moved from the retracted position to the pulled-out position, the left end of the rail support piece 49 starts from a certain point.
When the slide frame 65 abuts from behind and is subsequently moved forward from this state, it is rotated clockwise against the tensile force of the tension spring 156. Then, when the sliding frame 65 reaches the drawer position, the second cassette pressing lever 143 is activated.

As shown in FIG. 1, the upper part of the pressing pin 153 is in a position (hereinafter referred to as
The second cassette pressing lever 143 comes to the "pressing completion position".

Therefore, while the sliding frame 65 is moved from the retracted position to the pulled-out position, the front cover 9 of the cassette case 2, which was held at the normal mounting position in the cassette mounting part 141, is removed by the tape force. It is pressed from behind by the pressing pin 153 of the second cassette pressing lever 143.

Therefore, while the sliding frame 65 is moved from the retracted position to the withdrawn position, only the cassette case 2 of the tape cassette l is moved forward within the cassette mounting section 141, and therefore the tape cassette 1 will be moved to the temporary mounting position. By this, the sliding plate l
O will be moved rearward relative to the cassette case 2.

(o. Movement of the sliding plate of the tape cassette) [Figs. 11, 12, 15, 16] The sliding plate 10 provided on the tape cassette 1 is connected to the cassette mounting portion 141. While the tape cassette 1 is moved from the temporary mounting position to the normal mounting position, it is moved from the closed position to the open position, and while the tape cassette 1 is being moved from the normal mounting position to the temporary mounting position, It will be moved from its open position to its closed position.

(o-1, Movement from Closed Position to Open Position) First, movement of the sliding plate 10 from the closed position to the open position will be described.

When the tape cassette 1 is installed in the temporary installation position of the cassette installation part 141, the protrusion 15.
In this state, the insertion hole 20.20 is located in contact with the 11th protrusion 90.90 from the front.
As shown in the figure, 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 l 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 10. 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).
It 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 pieces 90.90 pass through the notches 24.24 formed at the lower edge of the front cover 9 of the tape cassette 1 and come into contact with the protruding pieces 15.15 of the sliding plate 10 from relatively behind. 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 projections 90 and 90 on the cassette holder 83 side are moved forward relative to the cassette case 1, so the sliding plate 10 is torsionally moved. The locking piece 27 is relatively moved backward, that is, moved forward, against the biasing force of the spring 18, and the engaging protrusion 29 of the locking piece 27 engages with the sliding plate 10, as shown in FIG. 12(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 to the open position, that is, as shown in FIG. 20 comes to a position coaxial with the insertion hole 21.21 formed in the lower half 4 of the cassette case 2, and the space 16 is opened. Further, when the sliding plate 10 comes to the open position, the engagement protrusion 29 of the lock piece 27 engages the first
As shown in FIG. 2(C), a groove is formed at the front end of the shallow groove 22.
As a result, the sliding plate 10 is locked in the open position.

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

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

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 pressing 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 pressing 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 (D)), thereby 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 lock piece 27 is released.

Then, when the sliding frame 65 reaches the pull-out position, the tape force set (1) is returned to the temporary mounting position, and the sliding plate 10
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, the sliding plate l
When O 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.

(p, drive system) [Figure 1, Figure 3, Figure 10] (p-1
, configuration) 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 182, 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
An input gear 166 meshed with the transmission gear 159 is a small-diameter drive gear fixed to an 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 188, 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.
Pins 171, 171 are provided to protrude upward from positions spaced apart by 0°. Small-diameter planetary gears 172.172 are rotatably supported by the pins 171.171, and these planetary gears 172.172 are connected to the drive gear 1.
66 and the gear teeth 16 formed on the inner peripheral surface of the driven gear 167
8,168,... are meshed with each other.

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.
The wire running gear 55 is meshed with the output gear 174C of No. 4 and the wire running gear 55.

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.

(p-2, operation) When the motor 157 is rotated, the rotation is transmitted to the planetary gear mechanism 162 through a transmission path such as the drive pulley 158 - the bell) 161 - the pulley part 160 of the transmission gear 159 - the 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 blocked, the driven gear 167 is rotated, and when the rotation of the driven gear 167 is blocked, the second output gear 170 is rotated. will be done.

That is, in a state where the drive gear 166 is being rotated,
If the second output gear 170 is prevented from rotating, the planetary gears 172, 172 will only be rotated in their current position by the drive gear 166, since the movement of the bin 171.17.1 is stopped. . Therefore, the driven gear 167 is rotated by the gear teeth 168, 168, .
It is transmitted to the wire running gear 55 through a transmission path such as - reduction gear 174 - 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, so the second output gear 170 will be rotated, and the rotation will cause the first reduction gear 176 - the second reduction gear The signal is transmitted to the rack plate 121 through a transmission path from gear 177 to 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
In this case, the input gear 165, sleeve 164, and drive gear 166 are 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.

Further, since the rotation of the planetary gears 172, 172 in the clockwise direction causes the $2 output gear 170 to rotate in the counterclockwise direction, the first reduction gear 176
is rotated clockwise, the second reduction gear 177 is rotated counterclockwise, and the third reduction gear 178 is rotated clockwise, so that the rack portion 124 of the rack plate 121 is rotated forward. He will be sent to

This causes the rack plate 121 to move forward.

In addition, when the motor 157 is reversed or rotated, the rotational direction of each pulley and gear, the running direction of the wire 81, and the rack plate 12
The direction of movement of the item 1 is all opposite to the above-mentioned directions.

(q, control means) [Figs. 1, 3 to 7, 9] 179 is fixed to the rear end of the left side of the right side plate 67 of the sliding frame 65, and This is a "locked piece" that is provided so as to protrude substantially horizontally toward.

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 is a first lock lever for preventing the movement of the rack plate 121 at a certain point. the first lock lever
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 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, the portion of the front guide bin 127, 127 with the rack plate 121 supported thereon, which protrudes downward from the rack plate 121, is inserted into the insertion hole 182, and the engagement pin 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 provided in a stretched state. Therefore, the first lock lever 181 is biased by the rotational force in the clockwise/clockwise direction by the tension spring 185, and the rack plate 121 is rotated over its guided length. Hole 122.1
In the position where the front edge of 22 comes into contact with the guide bin 127, 127, that is, in the above-mentioned retracted position,
While no pressing force is applied to the first lock lever 181 to rotate it counterclockwise, the engagement pin 1
The state in which the upper end portion of the rack plate 83 is engaged with the lock portion 123a formed at the front end portion 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 bottle 184 is positioned so as to face the cam 180 provided on the sliding frame 65 from the rear.

186 is a second lock lever that prevents 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 its rear end is extended from the rear. It is curved to form a cursive shape when viewed from the outside.
The bent portion thereof is rotatably supported on the upper part of a bin 187 which is erected from a position corresponding to the rear end of the right side of the rack plate 121 of the chassis 44.

Reference numeral 188 designates a second row, an engagement pin protruding downward from the rotating end of the flavor 186, and reference numeral 189 a pressed 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.

Then, the rack plate 121 is sandwiched between the front end of the middle piece of the bent part of the second lock lever 186 and the pin 187 of the base 45 of the chassis 44, and is erected from the left side at a corresponding position l. A tension spring 192 is passed between the rack and the spring-loaded pin 191.

Therefore, when the second lock lever 186 is biased by the same force in the clockwise direction by the tension spring 192, this turning force causes the pressed pin 189 to move toward the tick plate 1.
The state of contact with the right side surface of 21 is maintained.

Note that when the rack plate 121 is at the rear end position, the pressed pin 189 of the second lock lever 186 is in contact with the front end of the cam surface 190 of the rack plate 121.

(r, cassette loading operation) (r-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 to load the tape cassette 1 is given, 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 and 130 of the cassette presser 128 and 128 are , 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 1.80 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 18
1 is rotated counterclockwise, thereby the engagement pin 183 is disengaged from the lock portion 123a of the Mll long hole 123 of the rack plate 121, and the lock to the tick plate 121 is released. And immediately after this release.

Guided elements 77 and 78 of the sliding frame 65 abut against the rail support pieces 51 and 52 on the rear side of the chassis 44. That is, the sliding frame 65 reaches the retracted position.

As a result, in the planetary gear mechanism 162, the rotation of the driven gear 167 is prevented, and the output gear 1 of $2
Since the rotation of the gear 70 is now 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. As the lock lever 186 is rotated counterclockwise, the engaging 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 locking lever 186 is then 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 is moved toward the slider 111 as described above.
As a result, the cassette holder 83 is moved to the loading completion position described above. Therefore, the tape cassette is lowered toward the base substrate 35. Then, the cassette positioning pins 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 surface M9 is opened by a member (not shown). , and the engaging shaft portion 37a of the reel drive shaft 37, 38 is moved to a position where the space portion 16 is opened.

38a will be engaged with the guide 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.

(r-2, 7 Unloading) When a command for 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 transferred from the second output gear 170 of the planetary gear mechanism 162 to the rack plate 1.
21, and the rack plate 121 is moved rearward, that is, toward the standby position. by this,
As described above, the cassette holder 83 is moved to the raised position.

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 pin 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 locking of the sliding frame 65 by the second lock lever 186 is released.

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 force (set)l 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 uses a cassette holding means that is moved at least horizontally to load the tape cassette into a predetermined loading position. The tape cassette is moved to a loading completion position with the tape cassette attached, and the tape cassette is moved to a predetermined position within the cassette holding means, the tape cassette being moved from the loading completion position to the loading completion position. A cassette pressing means is provided which is operated according to the movement of the cassette holding means when the tape cassette is moved toward the unloading completion position and presses the tape cassette by being operated, thereby returning the tape cassette to its initial position. It is characterized by

Therefore, in the cassette loading device of the present invention,
Since the tape cassette that has been moved from its initial position within the cassette holding means is returned to its initial position within the cassette holding means by the cassette pressing means during unloading, the tape cassette can be removed when unloading is completed. becomes easier.

Furthermore, when the cassette loading device of the present invention is not in use, it is held in a position that closes the insertion hole formed in the cassette case for passing through the reel engaging shaft, and when in use, it is moved to a position where the insertion hole is opened. When applied to a device for loading a tape cassette equipped with a sliding plate that requires a sliding plate, the suppressing action by the cassette pressing means can also serve as a means for unlocking the sliding plate to the open position and returning it to the closed position. can.

Further, in the embodiments described above, the present invention was applied to a so-called linear skating system, but the present invention is not limited to such a system.

The present invention can be applied to a cassette loading device of a type in which the movement locus of the cassette holding means includes at least a movement locus in the horizontal direction, such as a front loading type.

In the above-mentioned embodiment, the cassette case is pushed in by the cassette pushing means by pushing the front surface of the cassette case. It is also conceivable to perform this by utilizing the groove 31 formed in the. That is, when the tape cassette is attached to the cassette holding means or after it starts moving toward the loading completion position, the pushing part of the cassette pushing means is engaged with the groove 31 formed in the cassette case. In addition, the cassette pushing means operated by the movement of the cassette holding means may press one side of the groove 31.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an example of the implementation of the cassette loading device of the present invention, and FIG. 1 is a plan view of the cassette holder pulled out of the outer casing, and FIG. 2 is a plan view of the cassette loading device of the present invention. A perspective view showing the external appearance of an audio tape recorder equipped with a loading device with the cassette holder pulled out of the outer casing, FIG. 3 is a plan view of the cassette holder pulled into the outer casing, and FIG. A schematic plan view of the cassette holder in the loading completion position, Figure 5 is a perspective view of the chassis, Figure 6 is a perspective view of the first lock lever, and Figure 7 is a partially exploded view of the sliding frame. , and a partially cutaway perspective view, FIG. 8 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 9 shows the movement of each part when the tape cassette is loaded from (A) to (C )
Figure 1 (A) shows I in Figure 1.
X (A) -1X Cross-sectional view along line (A), same figure (B
) is a cross-sectional view taken along line IX (B) -IX (B) in Figure 3, and figure (C) is a cross-sectional view along line IX (C) -IX (
C) A cross-sectional view taken along line C), Figure 10 is a cross-sectional view of the main part taken along line X-X in Figure 1, and Figure 11 is an enlarged cross-sectional view of the main part of the part along line X1 in Figure 1. , FIG. 12 is an enlarged sectional view of the main part showing the relative movement of the sliding plate provided on the tape cassette with respect to the cassette case from (A) to (p), and FIGS. 13 to 16 are the tape cassettes. An example of a cassette is shown. Fig. 13 is a perspective view from above in a state when not in use, Fig. 14 is a perspective view from below in a state when not in use, and Fig. 15 is a state in use. FIG. 16 is a perspective view seen from below, and FIG. 16 is a bottom view in a state when not in use. Description of symbols: 1, number 1, tape cassette, 43, cassette loading device, 83, Φ, cassette holding means, 143, cassette pressing means

Claims (1)

[Claims] In order to load the tape cassette into a predetermined loading position, the cassette holding means, which is moved at least horizontally, is moved to the loading completion position with the tape cassette loaded therein, and the tape cassette is moved to the loading completion position. A cassette loading device that operates by moving the cassette to a predetermined position within the holding means, and is operated by the movement of the cassette holding means when the cassette holding means is moved from a loading completion position to an unloading completion position. A cassette loading device characterized in that it is provided with a cassette pressing means that presses the tape cassette and returns the tape cassette to its initial position when operated.