JPH03286462A - Cassette loading device - Google Patents

Abstract

PURPOSE:To realize the correct and sure loading/unloading operation of a cassette tape by providing a switching means to switch a horizontal transferring mechanism and an elevating/lowering mechanism and a guiding means to guide a tray from horizontal transfer to elevating/lowering transfer and from the elevating/lowering transfer to the horizontal transfer. CONSTITUTION:After a tray assembly 59 to/from which the cassette tape 200 is loaded/ unloaded is transferred nearly horizontally from a slot-out position protruding from a cabinet 210, it is transferred nearly vertically to a slot-down position where the cassette tape is loaded to a tape driving part by using the elevating/lowering mechanism, and the device is constituted so that the tray assembly is transferred reciprocatively between the slot-out position and the slot-down position. Then, first of all, the tray 59 to carry the cassette is transferred horizontally as being guided by the guiding means because the horizontal transferring mechanism is operated, and from this state, a transfer system is switched to the elevating/lowering mechanism, and the elevating/lowering mechanism is operated. As the result, the tray is guided by the guiding means, and is transferred upward/downward to a recording medium driving part, and the loading/unloading of the recording medium to the recording medium driving part is executed. Thus, the correct and sure loading/unloading operation of the cassette tape is realized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention (Industrial Field of Application) The present invention relates to a recording and reproducing apparatus such as a video tape recorder (VTR), and in particular, the present invention relates to a recording/reproducing apparatus such as a video tape recorder (VTR), and in particular, the present invention relates to a recording/reproducing apparatus such as a video tape recorder (VTR), and particularly to This invention relates to a cassette loading device.

(Prior Art) Conventionally, in a cassette loading device for a VTR, a cassette tape is inserted horizontally from an insertion opening, and the inserted cassette tape is transferred to a tape drive section via a transfer mechanism for loading and unloading. Two known methods are a front loading method and a so-called linear skating method in which a cassette tape is directly attached to and removed from the entire tape drive unit which is transferred to the outside of the cabinet.

However, in the former front-loading method, the inserted cassette tape is transferred by passing it to a transfer mechanism inside the cabinet, making it difficult to confirm the loading operation, so the reliability of loading is not satisfactory. It wasn't. Although the latter linear skating method is satisfactory in that it allows the operator to load the cassette tape reliably, it requires the entire tape drive to be moved outside the cabinet. There was a problem in that the structure of the tape drive unit including the mechanism was extremely complicated.

Therefore, there is a need for the development of a cassette loading device that can confirm the loading of a cassette tape as in the conventional linear skating system, and that can also have a simplified configuration.

As a cassette loading device that satisfies these demands, a tray system is proposed in which a tray for transferring and holding cassette tapes is installed in the cabinet and can be moved in and out, and this tray is used to attach and detach the tape to the tape drive section. It is being In this tray-type cassette loading device, it is not enough to simply arrange the tray so that it can be moved in and out of the cabinet; instead, the cassette tape loaded on the tray must be transferred to the tape drive unit and then loaded/unloaded. , various structures are required to organically connect the tray and the tape drive unit.

However, the structure for organically connecting the tray and the tape drive section is different from the conventional front loading method or linear skating method, in which the tray on which the cassette tape is loaded can be moved in and out of the cabinet. Due to the method of placing the cassette tape in the tray, transporting it to the tape drive unit, and loading it, it is difficult to directly use the structure of the conventional method. A configuration that realizes reliable transfer of cassette tapes is required.

(Problems to be Solved by the Invention) As described above, in a cassette loading device in which a tray is arranged so as to be able to move in and out of a cabinet, it is different from the conventional method. A configuration is required to ensure that the cassette tape is loaded and to the tape drive unit, and that accurate transfer is achieved.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tray-type cassette loading device that can realize accurate and reliable loading/unloading of cassette tapes.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a tray on which a cassette containing a recording medium can be attached/detached so as to be freely removable from the front surface of the cabinet, and the cassette tape is inserted into the tray via the tray. A cassette loading device that transfers and loads the tray into a recording medium drive section in a cabinet, comprising: a horizontal transfer mechanism that horizontally transfers the tray into and out of the front surface of the cabinet; and a horizontal transfer mechanism that moves the tray horizontally to and from the front surface of the cabinet; a lifting mechanism for vertically transporting the cassette and attaching/detaching the cassette to and from a recording medium drive unit; and a lifting mechanism that is operated when the tray is switched from horizontal transport to vertical transport and from vertical transport to horizontal transport, and switches between the horizontal transport mechanism and the vertical transport mechanism. The tray is configured to include a switching means and a guide means for guiding the tray from horizontal movement to vertical movement and from vertical movement to horizontal movement.

(Function) According to the above configuration, the tray for transporting the cassette is first moved horizontally by the guide means by activating the horizontal transport mechanism from the slot-out state where the recording medium is attached or removed, and from that state. When the transfer system is switched to the elevating mechanism and the elevating mechanism is operated, the recording medium is guided by the guide means and moved up and down to the recording medium drive section, and the recording medium is attached to and removed from the recording medium drive section.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 to 3 show a cassette loading device according to an embodiment of the present invention, FIG. 1 shows the tray slot out state in which the cassette tape can be attached and removed, and FIG. 2 shows the state in which horizontal movement is completed. (vertical movement completed state), and FIG. 3 shows the state on the way from the state of FIG. 2 to the tray slot down state in which the cassette tape is loaded into the tape drive section. That is, the cassette loading device according to the present invention transports the tray assembly 59 shown in FIG. 4 onto which the cassette tape 200 is attached and removed approximately horizontally from the slot-out position protruding from the cabinet 210 as shown in FIG. It is configured to reciprocate between the slot-down position where the tape is transferred approximately vertically using a mechanical section and loaded into the tape drive section, and includes a guide section that reciprocates the tray assembly 59 and five tray assemblies. It is composed of an operating mechanism that drives reciprocatingly. Note that moving the tray inward in the cabinet to position it from the slot-out state to the slot/soft-down state will be referred to as slot-in.

For convenience, here, we will explain how to operate a VTR set on the assumption that when the VTR set is placed in a horizontal position, the operator (user) is standing facing the outlet side of the cassette tape 200 of the VTR set. Front (direction A)・
Back (B direction), left (C direction), right (D direction), top (E
direction) and downward (F direction).

First, the tray section will be explained. That is, as shown in FIG. 6, the tray assembly 59 includes a tray frame 60, a tray plate 61, pop-up sliders 62, 66, and a pop-up slider spring 6 as main elements.
4.681, left and right pair of pop-up levers 70, left and right pair of knob-up lever springs 71, cassette lid opening lever 72, release lever spring 73, chestnut lever 74.7g, click lever spring 75.79, It is composed of a tray rail 76, 80, a cassette/soto stopper 82, and a cassette stopper spring 83.

First, the tray plate 61 is attached to the tray frame 60.
A tray assembly 59 is formed which is screwed and fixed to form a holder for the cassette. An upwardly bent portion 6'la is provided at the rear center of the tray plate 61 to prevent the cassette tape 200 from moving back and forth and from being incorrectly inserted upside down. In addition, the tray plate 61 is provided with a bent portion 6" lb at the left and right rear sides thereof to serve as a stopper in the front and back direction when a cassette tape is loaded.Furthermore, the tray plate 61 is provided with a tape drive unit when the slot is down. A plurality of through holes 61c are provided to avoid contact with the cabinet.The through holes 61c protrude from the front surface of the cabinet in the slotted-out state and have a large area through which hands or fingers can pass through. It is formed all the way to the front side (discharge side) side wall of the protruding tray frame 60.The shape of this through hole 61c is designed with operator safety in mind, so even if the operator's hand or fingers are pinched. , rather than the thin end surface of the tray plate 61, it is sandwiched between the wide front frame 61 and prevents the formation of a diameter hole.This is because the force per unit area of the through hole 61c is greatly reduced. This virtually eliminates the risk of perforation of the hand or fingers.

The shape of the through hole 61C is such that the direction in which the hole becomes smaller from the rear to the front is at an angle of about 45 degrees or less with respect to the front-back movement direction. This is a measure to prevent this because if the angle becomes large, there is a risk that the cabinet 210 will get caught between the thin end face of the diagonal portion and the cabinet 210 will form a diameter hole. In addition, the through hole 61C is not divided into multiple parts,
As shown in FIG. 7, the tray plate 61 may be provided one size larger so as to have a substantially U-shape. And this through hole 6
1 c Cd together with the above safety measures, e.g. VH8-C
When a foreign object such as a cassette is accommodated, it passes through the hole and falls down, thereby preventing the installation of anything other than a regular cassette tape.

At the bottom of the left and right sides of the tray frame 60 are crawling gear parts 6.
0a and 60b are provided, and horizontal movement is performed by tray drive gears 52 and 53, which will be described later. Tray rails 76 and 80 are fixed with screws to the left and right sides of the tray frame 60, respectively, and the left and right upper sides formed by the left side of the tray frame 60 and the tray rail 76, and the right side of the tray frame 60 and the tray rail 80 are fixed. Horizontal movement is guided by the lower grooves 60c, 60d and 76a, 80a. A pair of lower left and right grooves 76a, 80a engage with guide rollers 4, which are installed in pairs on the inside of both side plates of the lifter 2 of the tray lifter assembly 1, which will be described later, in the front and rear, respectively. This roller is made of conductive abrasive material and has a tray rail of 76.80 mm.
This ensures electrical conductivity between the tray lifter assembly 1 and the tray lifter assembly 1. The open ends of the pair of lower grooves 768+80a are tapered vertically to facilitate engagement with the guide roller 4. A pair of upper grooves 60c.

60d is engaged with door lock levers 86 and 871, which will be described later, and is guided in horizontal movement and controls the operation of the door lock levers 86 and 87. A pair of grooves 6 on the upper side
The open ends of 0c and 60d are tapered upwardly and downwardly and inwardly to facilitate engagement with door lock levers 86 and 87, ensuring highly reliable operation.

The height of the tray frame 60 is approximately from the center to the front side when the cassette tape 200 is placed on it.
0 can be seen slightly, and the front center part is set even lower than the left and right parts, and the left and right side walls of the frame are arranged from bottom to top so that the cassette tape 200 can be easily installed. A sloping section of 60 m is provided which is inclined in a direction in which the area gradually decreases, and the cassette tape 2
This was done in consideration of the ease of attaching and detaching the 00. The left and right side walls of the frame are formed in a step shape with a convex portion 60e at the rear thereof that is large enough to almost hide the cassette tape and has a slight clearance with the opening hole of the cabinet 210 through which the tray assembly 59 enters and exits. . The convex portion 60e has an inclined portion 60n inclined in a direction in which the width gradually decreases from bottom to top and an inclined portion 60p inclined in a direction in which the width gradually decreases from the front to the rear. Although the ease of attaching and detaching the tape 200 is taken into consideration, in order to avoid damaging the cabinet 210 by applying the cassette tape 200 around the opening hole of the cabinet 210 when installing the cassette tape 200, please use a regular tape before hitting the cabinet 210. It has the effect of guiding you to a location. The front, left and right, upper and lower corners of the tray frame 60 are formed into a curved shape with a predetermined radius to ensure safety so that the operator does not make a hole with the edge. As shown in FIG. 8, a curved portion 60k having substantially the same shape as the radius of the corner of one end (rear end) of the cassette tape 200 is formed at a corner of the inner circumferential wall on the front side of the tray frame 60. As shown in FIG. This is one way to prevent the cassette tape 200 from being inserted backwards and forwards backwards, and when the cassette tape 200 is inserted backwards and forwards backwards, the external portion without the radius will face the curved portion 60k of the tray frame 60. Therefore, it cannot be inserted. Although various other measures have been taken to prevent the cassette tape 200 from being inserted backwards and forwards in reverse, this method makes it even more reliable.

A hole 60f penetrating from the inside to the outside is provided on the left side of the front surface of the tray frame 60. As shown in FIG. 9, this hole 60f is connected to the C cassette unopened detection lever 2 of the C cassette adapter 250 for the well-known VHS-C cassette.
51, and is height-wise aligned with the groove 60c on the lower left side so as not to spoil the appearance. If C
C cassette adapter 250 with no cassette opening
When the C cassette is inserted into the slot, the C cassette unopened detection lever 251 is inserted into the groove 6 on the lower left side as shown in FIG.
0c and protrudes into the groove 76a of the tray rail 76, so the tray lifter assembly 1 is inserted in the slot.
Since it is stopped by the guide roller 4 and cannot be inserted any further into the slot, the controller 300 (see FIG. 11), which will be described later, detects an abnormality and is ejected. Therefore, there is no possibility of damaging the C cassette adapter 250 or the parts of the VTR body. Further, the hole 60f on the left side of the tray frame 60
is provided with an inclined part 601 for guiding the detection lever, which is inclined so that the front side is lower and the slot-in direction is higher.
C cassette adapter 250 for cassette end
is inserted into the slot by mistake and is ejected when an abnormality is detected.
This allows the C cassette end loading detection lever 251 to be smoothly accommodated within the C cassette adapter 250 and taken out. In addition, through holes 60g and 60h are provided at the left and right rear portions of the tray frame 60, respectively, through which transmitted light passes from the inside to the outside for tape end detection.

This height matches the lower grooves 76a and 80a and is designed not to spoil the appearance.

The tray rails 76 and 80 fixed to the tray frame 60 with screws are connected to the rack gear portion 6 of the tray frame 60.
A rack gear portion is provided on the lower side so that 0a and 60b are continuous. Click levers 74 and 78 are located between the tray frame 60 and the tray rails 76 and 80, respectively.
is rotatably held. This click lever 74
．． 78 are click lever springs 75.79 respectively
The grooves 76a and 80a on the lower side of the tray frame 60 are biased in the direction of narrowing the width, and when the horizontal movement of the five tray assemblies is completed, the tray lifter assembly 1
The position of the tray assembly 59 relative to the tray lifter assembly 1 is maintained by engaging the guide roller 4 of the tray lifter assembly 1. The engaging portions of the click levers 74 and 78 with the guide rollers 4 are formed at a predetermined angle, so that the five tray assemblies can be drawn in and held if the positional deviation is within a predetermined range. At the rear of the tray rails 76 and 80, tray rail position regulating parts 77 and 81 are respectively provided, and when the tray assembly 59 shifts to vertical movement after completing the slot-in horizontal movement, the side chassis tray regulating parts rear 12, which will be described later, are provided. .28 is engaged. The five tray assemblies are basically held by click levers 74 and 78, but they may separate if an unexpected external force is applied, but this allows you to control the amount of separation, and if the external force is released. After that, you can pull it in and hold it as described above. In addition, there is a bending part for guiding at the beginning of the connection at 12.28 after the side chassis tray regulating part, so when the five tray assemblies move to vertical movement after completing the slot-in horizontal movement, the amount of horizontal movement may be slightly Even if there is a shortage, you can draw in with this guidance. Therefore,
The position of the tray assembly 59 can always be maintained with high precision when the slot is down, and especially when the slot is out,
A shaft gear 18° 34 for transfer switching, which will be described later, and a rack gear section 76b, 8 at the rear upper part of the tray rail 76.80.
0b can mesh without causing a phase shift,
Stable operation can be obtained. Further, the tray rail position regulating portion 77.81 is located at the side chassis 10.5 when the five tray assemblies are slotted out as shown in FIG.
1 in front of the side chassis tray position regulating part provided in 26
3. It rides on the upper end surfaces 13a and 29B of 29. As a result, the tray assemblies 5 are biased in one direction with respect to the clearances between the grooves 60c and 60d, the guide roller 4, and the door lock levers 86 and 87, and the vertical play of the 5 tray assemblies in the slotted-out state is eliminated. By reducing the amount, the quality of the product can be improved. Regarding the left and right play, in addition to the guide by the tray lifter 2, a pair of constricted parts 10a provided inside each of the side chassis tray regulating part surfaces 13.29 and inside each rear of the side chassis 10.26, By accurately guiding the left and right sides of the tray assembly 59 with 26a, smooth movement is ensured (
(See Figure 13). Furthermore, in the slot-out state, the elasticity of a tray detection lever 89, which will be described later, is used to bias the left and right play of the tray assembly 59 in one direction, thereby reducing the left and right play and improving the quality of the product. That is, the tray rail 76.80 has its rack gear portions 76b, 8
0b is engaged with the shaft gears 18 and 34, the pair of front side guide rollers 4 are guided into the upwardly shifted grooves 60c and 60d, and the rear side of the tray assembly 59 is once pushed up (Fig. 14). (see (a)). As a result, the tray rail 7680 has its rack gear portion 76b.
.

The flat part at the rear part of the shaft gear 80b regulates the flat part 18834a of the shaft gear 18, 34 that meshes with the rack gear part 14f, 30f of the rack slider 14.30, thereby correcting the posture of the shaft gear 18, 34 ( Figure 15(a)
(See (b) and (c)) After that, shift gears 18, 3
4 is a rack gear portion 76b of the tray rail 76.80.

80b, and the rack slider 14.30 is operated as described below (see FIG. 15(d)).
Tray assembly 59 is lowered. Also, Fig. 14(b)
At the time of lockout shown in the figure, the tray frame 60
As shown in FIG. 16, the lower rack gear parts 60a and 60b are once guided to move apart in a direction substantially parallel to the movement direction, and after the backlash is absorbed, the left and right tray drive gears are moved. 52.53 small gear part 52a
, 53a, the small gear portion 52a,
53a and rack gear section 60a.

This has the effect of preventing gear jump that tends to occur at the beginning of meshing of the gears 60b.

A cassette lid lock release lever 72 is provided inside the frame on the right rear side of the tray assembly 59 so as to be pivotally supported by a tray frame 60 and a tray plate 61. The cassette lid lock release lever 72 has a lid lock release portion 72a1 and a boss portion 72b, is provided so as to be rotatable left and right, and is biased toward the inside of the tray assembly 59 by a release lever spring 73 (see FIG. 17). . As a result, when the cassette tape is stored in the tray, the lid lock release button 202 of the cassette tape 200 is pressed to release the lid lock. Since the lid lock release portion 72a of the cassette lid lock release lever 72 is tapered from the inside to the outside in the front, rear, right and left directions, the cassette tape 200 can be smoothly attached and detached. Since the cassette lid lock release lever 72 is provided on the tray assembly 59, it has a very simple structure without any special operation for releasing the lid lock. Further, the cassette lid lock release lever 72 has a lid lock release portion 72a that is connected to the tray frame 60.
When the tray frame 60 is biased outward to the space between the inner surface and the groove, the boss portion 72b is projected into the groove portion 60d on the lower right side of the tray frame 60 (see FIG. 18(b)). As a result, it is detected that the cassette tape is inserted upside down. That is, when the cassette tape is inserted upside down, the cassette lid lock release lever 72 is pressed against the inner surface of the tray frame 60 by the lid lock release portion 72a being pushed against the side surface of the cassette half, as shown in FIG. 18(a). The boss portion 72b provided on the cassette lid lock release lever 72 protrudes into the groove portion 60d on the lower right side of the tray frame 60, so that the boss portion 72b guides the tray lifter 2 while being inserted into the slot. It is locked by the roller 4 and cannot be slotted in any more. Then, this is controlled by the control section 300 (
(see FIG. 11), the abnormality detection is activated, and the tray assembly 59 is ejected. Of course, in the normal insertion state, the lid lock release part 72a of the cassette lid lock release lever 72 engages with the lid lock release part of the cassette tape, so that the boss part 72b is not biased to rotate and is pressed against the tray frame 60. It is located inside the bottom of the groove 60d on the lower right side of the screen, and allows the subsequent transfer operation (see FIG. 18(a)).
reference).

The tray plate 61 is fixed to the tray frame 60 from below with screws. A conductive metal plate is used to ground the charged half of the cassette tape.

On one side (back side) of the tray plate 61, there is a cassette ejecting means called a selective pop-up mechanism, which is mostly located under the tray plate 61 or on the tray frame 6.
0 so as not to spoil the appearance from above (see FIGS. 19 and 20). That is, hop-up sliders 62 and 66 are arranged at a predetermined interval on the back side of the tray plate 61. tray plate 61
There are outer spacer sleeves 6 on the left and right sides of the front side of the
5 is fixed with screws, and this spacer sleeve 65 engages with elongated holes 62a and 66a provided in the hop-up sliders 62 and 66, respectively, and the pop-up slider 62
．． 66 is regulated in the horizontal and vertical directions and is held so as to be slidable back and forth. Spacer sleeves 65 screwed to the inner sides of the front left and right sides of the tray plate 61 regulate the vertical direction of the inner ends of the pop-up sliders 6266, respectively.

Further, spacer sleeves 69 are fixed to the left and right rear portions of the tray plate 61 with screws.
9 is engaged with square holes 62b and 66b provided in the pop-up sliders 62 and 66, respectively, to regulate the vertical direction of the pop-up sliders 62 and 66. This square hole 6
The pop sliders 62 and 66 can be rotated left and right around the spacer sleeve 65 on the front side of the tray plate 61 by the clearance between the pop sliders 2a and 66a and the spacer sleeve 69. Pop-up slider 62.66
Cassette detection bosses 63 and 67 are respectively implanted in the tray plate 61 so as to pass through relief holes. When the cassette detection bosses 63 and 67 are energized outward, they are stored in storage locations provided on the left and right sides of the tray frame 60.

Each pop-up slider 62,66 is normally inwardly biased by a pop-up slider spring 64,68. When the cassette tape 200 is set on the tray assembly 59, the left and right sides of the cassette half of the cassette tape are biased outward. Pop-up slider 62
．． 66 are the tray plate 61 and the tray rail 7, respectively.
6. It is in contact with the tray plate 61 and the right tray rail 80 and is conductive. As a result, as described above, the static electricity charged on the cassette tape 200 passes from the cassette half, from the pop-up slider spring 6468, through the tray rail 76.80, from the guide roller 4 to the tray lifter 2, the tray lifter operating section 3, the Grounded in the path of chassis 10.26 and main chassis.

A pair of pop-up levers 70 are pivotally supported on the left and right sides of the front side of the tray plate 61. Pop up lever 7
0 is normally biased so that its tip falls downward by a pop-up lever spring 71, and the pop-up lever storage hole of the pop-up slider 62, 66 is inserted so that its tip is slightly above the top surface of the tray plate 61. 62d.

It is stored in 66d. This is cassette tape 20
When 0 is set, it is not directly received by the tray plate 61, but first received by the pop-up lever 70, so that its cushioning effect reduces the impact noise at the time of setting. The pop-up lever 70 has a curved portion 70a formed at its front end, and when the curved portion 70a engages with the hop-up slider 62.66 and the left and right pop-up sliders 62.66 slide rearward. , the tip of the pop-up lever 70 is lifted. When the pop-up slider 62, 66 returns to the front, the tip of the pop-up lever 70 lowers and returns to its normal position.

The pop-up sliders 62 and 66 are provided with bent portions 62c and 66c at their respective rear ends, and when the slot is removed with a cassette tape set,
As mentioned above, the bent portion 62c is formed by the cassette tape.
, 66c are biased outward, the wrinkled portion 62c
, 66c engages with a pop-up control lever 57, which will be described later, during slot-out. As a result, the left and right pop-up sliders 62, 66 are slid rearward relative to the tray assembly 59, and the pop-up lever 70
to lift the leading end of the cassette tape 200.

Therefore, in the slot-out state, the front side of the cassette tape 200 is lifted, making it easy to take out the cassette tape 200 (second
(see 1). In addition, as will be described later, the pop-up lever 70
When the tray assembly 59 is in the slot-out state, the pop-up sliders 62 and 66 are rotated and the bent portion 62c
, 66c are separated from the pop-up control lever 57, the pop-up lever 70 is reversed and escapes, so that the subsequent slot-in operation will not be hindered.

In addition, when the slot is removed without a cassette tape, the pop-up sliders 62 and 66 are biased inward by the pop-up slider springs 64 and 68, so that the bent portions 62c and 66c at the tips of each pop-up slider. By escaping inside the control lever 57,
The tip of the pop-up lever 70 is slotted out in the normal state in which it is lowered, and the cassette tape 200 can be loaded therein smoothly. If the cassette tape 200 is removed while the front side of the cassette tape 200 is being lifted up in the slot-out, when the cassette tape 200 is removed as described above, the pop-up slider 62° 66 will move to the pop-up slider spring 64. 68 inwards, each bend 62
c.

66c escapes to the inside of the pop-up control lever 57, the pop-up lever 70 is returned to its normal position by the pop-up lever spring 71, and the pop-up sliders 62 and 66 are accordingly returned to the front direction, allowing the next cassette to be moved. The tape 200 can now be attached.

Further, a cassette detection boss 63.67 is rotatably mounted on the pop-up slider 62.66 at a position shifted by a predetermined distance in the front-rear direction. As a result, when the cassette tape 200 is installed, the cassette tape 200 pushes the cassette detection bosses 63 and 67 outward, but this pushing and pushing becomes a moderate load by dispersing the force, and it is smooth. In addition, when the cassette tape 200 is removed from the tray assembly 59, the pop-up lever 70. The pop-up sliders 62, 66 return to their normal positions by the spring force of the pop-up slider springs 64, 68, but by shifting the return timing on the left and right sides, the impact noise at the time of return is dispersed and reduced. Furthermore, since the positions of the cassette detection bosses 63 and 67 in the front and rear directions are shifted by a predetermined interval, even if the operator fails to take out the cassette tape 200, the tip of at least one of the pair of pop-up levers 70 will be removed. The lifted state is maintained, and a state in which the front side of the cassette tape 200 is raised and easy to take out is maintained, and the cassette can be taken out smoothly.

Note that when no cassette tape is stored in the five tray assemblies, the pop-up sliders 62 and 66
are biased inwardly, and the bent portion 62c at the tip of each
, 66c have escaped to the inside of the pop-up control lever 57, but by setting the clearance between the square holes 62b and 166b of the pop-up slider 62 and 66 and the large spacer sleeve 69, the tips of each can be moved even when there is no cassette tape. The bent portions 62C and 66C of the pop-up control lever 57 can be configured to engage the inside of the pop-up control lever 57. In this case, in the slot-out state, the tip of the pop-up lever 70 is always raised, but when the cassette tape 200 is loaded and the cassette tape 200 is pushed down, the pop-up lever 70, the pop-up sliders 62, 66 , the five tray assemblies are pulled into the set by operation of the pop-up control lever 57. Since the operation is the same as when the tray assembly 59 is pushed in, slot-in can be started by pushing down the cassette tape 200.

Although the series of pop-up mechanisms has been described on the assumption that there is a pair of left and right mechanisms, mechanically it is also possible to use either one of the left and right mechanisms.

Also, as previously explained, the pop-up sliders 62 and 66 are normally biased inward by the pop-up slider springs 64 and 68, but this is because the cassette tape 200 is attached to the tape drive unit in the slot-down state. The cassette tape is held between the left and right sides by the cassette detection bosses 63 and 67 even when the cassette tape 200 is being loaded, and by suppressing the vibration of the cassette tape 200, it improves the set performance such as improving wow and flutter, improving jitter, and reducing noise. Effective for improvement.

Further, a display member 91 called a pop-up demo card is detachably housed in the tray assembly 59, as shown in FIG. 21, for example, when the VTR set is shipped. This display member 91 displays, for example, instructions for handling, etc., and is folded back on the front side (front side) to form two upper and lower panels, and is normally energized in the closing direction (see the two points in Fig. 21). (indicated by a dashed line). The lower surface side of the display member 91 has an escape hole for operating the pop-up lever 70, and - the cassette tape 2
It has a shape such as between the bottom surface and the road of 00, and the tray assembly 59
It is installed with a slight press fit. The upper surface of the display member 91 is slightly smaller so that it can be opened and closed without contacting the tray assembly 59 in the slot-out state, and various design characters and illustrations such as instruction manuals are printed on the surface as described above. is opened upward by the pop-up lever 70 when the slot is out due to the selective pop-up mechanism described above.
This has the effect of ensuring reliable handling of personnel (including operators).

At the rear of the tray frame 60, a cassette stopper 82, which also serves as an internal blindfold, is pivotally supported so as to be rotatable in the vertical direction (see FIG. 23). The cassette stopper 82 has a shaft 82a as a rotation fulcrum.

82b is integrally provided, and this shaft 82a.

82b is inserted into the fulcrum holes 60i, 60j of the tray frame 60 using the elasticity of the mold. and,
As shown in FIG. 23, when the tray rail 76.80 is screwed to the tray frame 60 with the screw 111, the cassette stopper 82 restricts the amount of removal of the shafts 82a, 82b by the screw 111, and prevents their removal. be done. The cassette stopper 82 is biased in the closing direction by a cassette stopper spring 83, and in conjunction with the slot-in operation, a cassette lid opener 38 provided on the rear reinforcing plate 37 (described later) opens the lid 20 of the cassette tape 200. will be opened to As shown in FIG. 24, the rotational fulcrum of the cassette stopper 82 is set at the same longitudinal and vertical position as the fulcrum of the lid 201 of the cassette tape 200, and the fulcrum of the rotation of the cassette stopper 82 is set to be the same as the fulcrum of the lid 201 of the cassette tape 200 mounted. is rotated.

A window 82c is provided near the right side of the cassette stopper 82, through which the tape running component 350 of the tape drive unit can be seen diagonally from above when the slot is opened (see FIG. 6). On the other hand, a similar hole 37a is provided in the rear reinforcing plate 37, so that inspections such as tape running adjustment of the tape drive unit can be carried out without any trouble when the device is assembled.
Tests can be conducted. In this way, the cassette stopper 82 also serves to hide the inside of the tape drive section when the slot is out, thereby preventing the operator's fingers or the like from entering the tape drive section. Further, as shown in FIG. 25, it also serves as a final stopper when the cassette tape is mounted by climbing over the bent portions 61b, which are stoppers in the front and back direction of the cassette tape provided on the rear left and right sides of the tray plate 61.

Next, the operating mechanism section will be explained. That is, the operating mechanism section includes a tray lifter assembly 1 that accommodates the five tray assemblies and moves them up and down, a side chassis assembly 9, 25,
Rear reinforcement plate 37 that connects and holds the side chassis assembly 9.25, front reinforcement plate 85, lower front reinforcement plate 55, drive motor 3
The tray drive assembly 39 is configured to reduce the speed and transmit the driving force to the side shear assembly 9.25, and the drive transmission section synchronously transmits this driving force to the side shear assembly 9.25.

The tray lifter assembly 1 constitutes a lifting mechanism, and includes a lifter 2, a guide roller 4, and a leaf spring 5 for holding a cassette.
, a hold roller 6, a roller shaft 7, and a cassette detection switch 8. On the inside of the side plate of the lifter 2, guide rollers 4 are rotatably supported by posts at four locations on the front and back, and as described above, the guide rollers 4 are rotatably supported in the grooves 7 on the lower side of the tray assembly 59.
6a.

86a to restrict the horizontal position of the tray lifter assembly 1, guide the movement in the front and back direction, and hold it in the vertical direction. Lifter operating pins 3 are provided on the outside of the lifter 2 at four locations on the left, right, front, and rear, and the lifter operating pins 3 pass through a total of four guide holes in the side chassis 1026 (described later) to connect the rack slider left and right. 14.30 are engaged with a total of four lift grooves 14a, 14b, 30a, and 30b. A total of four guide holes 10b, 10c, 26b, and 26c in the side chassis 10.26 are designed to guide the lifter operation pin 3 up and down. Each of the four lift grooves of the rack slider 14.30 has an inclined groove part in the center that allows the lifter operating pin 3 to move upward. Connected to the rear is a groove that holds it in the down position. As a result, the tray lifter assembly 1 is placed on the rack slider 1 while its position is restricted in the front-rear direction.
When the rack slider 4.30 is in the rear position, it is moved to the up position, and when the rack slider 14.30 is in the front position, it is moved to the down position. In addition, there are two guide holes 10b in the side chassis 10.26 at four locations, two at the front and rear.

Among 10c, 26b, and 26c, one pair has a small clearance with the lifter operating pin 3, and the other pair has a large clearance. This is to absorb manufacturing variations in parts and to maintain accuracy in regulating the position of the tray lifter assembly 1 in the longitudinal direction.

The lifter 2 has two large holes 2a on the left and right.

2b is provided. These holes 2a and 2b are for monitoring the torque cassette during set adjustment, and the cassette loading device is
Various inspections, etc. can be carried out while installed in the TR. Note that the left and right holes 2a of the lifter 2.

2b has its periphery reinforced by bending and drawing, so that it can hold the leaf spring 5.

Further, as shown in FIG. 26, three hold rollers 6 are arranged on the lifter 2 at a predetermined interval. Each of the hold rollers 6 is rotatably supported by a leaf spring 5 by a roller shaft 7, and fixed with screws at three locations near the center and left and right ends of the upper part of the tray lifter assembly 1, forming a cassette tape holding section. ing. The leaf spring 5 is fixed in a predetermined manner, and when a cassette tape is inserted by a slot-in operation, it is further bent by a predetermined amount to press and hold the cassette tape. The hold roller 6 has the effect of smoothing the insertion of the cassette tape during slot-in operation,
This has the effect of preventing the top surface of the cassette tape from being scratched by sliding.

Further, the cassette tape holding section also functions to close the lid 252 of the C cassette adapter 250 when the lid 252 (see FIG. 9) is inserted in an open state. The position of the hold roller 6 is shifted from two places near the left and right ends near the center by a predetermined distance in the front-back direction, and holds the cassette tape 200 at three points on a planar surface. This greatly improves the stability of holding the cassette tape. In addition, hold roller 6
Due to the arrangement of the cassette tape near the center and the surface pressing effect, the vibration of the cassette tape 200 is suppressed, and the setting performance is improved by improving wow and flutter, improving jitter, and reducing noise. Furthermore, the setting performance can be improved by forming at least the part near the center of the hold roller 6 with an elastic material such as rubber or a damping material, or by making the cassette tape holding part near the center have a vibration damping structure. You can do more.

The setting performance described above is achieved by holding the cassette tape from the left and right sides using the cassette detection bosses 63 and 67 and pressing the surface as described above, thereby realizing three-dimensional holding of the cassette tape in the horizontal and vertical directions. We are working to improve this.

Further, the tray lifter assembly 1 is provided with a total of two cassette detection switches 8 at the left and right rear of the upper part thereof, sandwiched between the lifter 2 and the leaf spring 5, respectively. The cassette detection switch 8 is connected to the leaf spring 5 as shown in FIG. 27(a).
Normally, it is pressed by this leaf spring 5 to be in the ON state, but if there is a cassette tape 200, the leaf spring 5 is bent upward by a predetermined amount, and the switch is turned OFF (see (b) in the same figure). See. The structure is very simple because the leaf spring 5 is also used to operate the cassette detection switch 8.The two cassette detection switches 8 are connected in parallel to the control unit 300 again as shown in FIG. and tray assembly 59
is inserted into the slot, and only when both of the two cassette detection switches 8 are OFF, the control section determines that there is a cassette tape, and drives the five tray assemblies to the slot down position as will be described later. At this time, when one or both of the cassette detection switches 8 are in the ON state, the tray assembly 59 is stopped at a third stop position between the slot-out position and the slot-down position, which will be described later. In terms of timing, as shown in FIG. 28, the positions of the leaf spring 5, hold roller 6, and cassette detection switch 8 are set so that the cassette tape can be detected before reaching the third stop position. No special drive control is required to stop in position. This third stop position is when the tray assembly 59 is placed in the cabinet 210.
This is the position where the five tray assemblies are housed in the horizontal movement end position or the vertical movement start position of the five tray assemblies. Since the tray assembly 59 is slotted in for the purpose of storing it in the cabinet 210 even without the cassette tape 20D, if the cassette tape 200 is not stored, it will not be in the slot down position (the five tray assemblies will not be in the third stop position). By stopping and waiting, the time from the eject signal to the slot out end is shortened and operability is improved.Furthermore, two cassette detection switches 8 are arranged on the left and right sides of the tray lifter assembly 1. If the cassette tape 200 is inserted in the longitudinal direction,
Or other than regular cassette tapes, such as C cassettes.

Both are OFF even if a β cassette etc. is inserted.
(off) and the tray assembly 59 does not go past the third stop position to the slot down position. Furthermore, since the cassette detection switch 8 is normally in the ON state, even if the cassette detection switch 8 fails for some reason and is turned OFF, the control unit 300 will not detect that a cassette tape is present. By judging,
Normal operation will be possible from now on. In this case, when the cassette tape 200 is not stored, it will go to the slot down position, but the control is controlled by turning on both photosensors 23 and 47 for tape end detection, which will be described later. The unit 300 detects an abnormality and discharges the five tray assemblies.

The side chassis assembly 9 includes a side chassis 10, a rack slider 14, a rack biasing spring 15, a drive gear 16, a shift gear spring 17, a shift gear 18, a sensor shutter 19, a shutter spring 20.
It is composed of a shirt shirt shaft screw 21, a sensor holder 22, a photosensor 23, and a tray down detection switch 24. The side chassis assembly 25 includes a side chassis 26, a rack slider 30, a rack biasing spring 31, a drive gear 32, a shift gear spring 33, and a shift gear 34.
, a drive motor 35, and a drive pulley 36. When the side chassis is assembled, 25 is 37 after the reinforcing plate and 85 before the reinforcing plate.
, are connected and held by the lower front reinforcing plate 55, etc., and have a gate-shaped structure as a whole. The side chassis left assemblies 9 and 25 are screwed to the main chassis.

The rack slider 14, the rack slider 30, the springs 15 and 31, the shift gears 18 and 34, and the shift gear springs 17 and 33 are arranged substantially symmetrically.

The rack slider 14 and the rack slider 30 are arranged outside the side chassis 10 and 26, respectively, and have horizontal movement guide grooves 14c and 14d provided above and below, respectively.
, 30c, and 30d are engaged with the rack slider guide boss 11 of the side chassis 10 and the rack slider guide boss 27 of the side chassis 26. Between the upper and lower horizontal movement guide grooves 14c, 14d, 30c, and 30d are lift grooves 14a, 14b, and 30a for vertically moving the tray lifter assembly 1, as described above.

30b are provided at the front and rear, and the lifter operation pin 3 of the lifter part 2 is engaged. These lift grooves 14a, 14
The rear lower portions of 30a and 30b, which are engaged with the lifter operating portion 3 at the slot down position, are formed so that they are slightly raised once the lifter operating bin 3 is lowered to its lowest point.

This is because the rack slider 14 and O are returned due to the reaction of the drive belt 44, an unexpected external force, etc., and the lifter operation bin 3
This is to prevent the cassette tape from being incompletely crimped due to the engagement of the lifter moving part 3 moving to the sloping groove.Due to the shape, the engagement of the lifter operating part 3 moves to the sloping groove, thereby preventing the lifter from moving to the sloping groove. It is necessary to lower the pin 3 to the lowest point again, and this load prevents the engagement position of the lifter operation bin 3 from moving, so that the cassette tape 200 is kept completely crimped. Note that the above shape does not need to be provided in all four lift grooves 14a, 14b, 30a, 30b, and may be provided in at least one location. Rack slider 14 and 30
are normally biased rearward by springs 15 and 31, respectively.

Rack gear parts 14e and 30e are provided on the front lower sides of the rack sliders 14 and 30, respectively, and can be engaged with drive gears 16 and 32, which will be described later, and can be operated in the horizontal direction. Rack gear portions 14f and 30f are provided on the rear upper sides of the rack sliders 14 and 30, respectively, and a flat portion 14g is provided on the rear portion thereof.

30g is provided. This rack slider 14° 30 has its rack gear parts 14f and 30f connected to the shift gear 18,
The flat parts 14g and 30g at the rear part engage the shift gears 18 and 34 before the rack gear parts 14f and 30f engage with the shift gears 18 and 34, respectively. The attitude of the shift gear 18.34 is corrected by contacting the flat portions 18a, 34a of 34. Thereafter, the shift gears 18, 34 mesh with the rack gear portions 14f, 34f of the rack slider 14.30. The rack gear parts 14f and 30f on the rear upper side of the rack sliders 14 and 30, respectively, and the upper part of the flat parts 14g and 30g of the rear parts are 37 behind the reinforcing plate.
The upper direction is regulated by the horizontal movement, and the horizontal movement is guided. In addition, when the rack gear parts 14f, 30f of the rack sliders 14, 30 mesh with the shift gears 18, 34, the upper end sides of the rack gear parts 14e, 30e are bent outwardly at the upper front side of the side chassis 10.26, and a constricted part 10d is formed. The upper direction is regulated by 26d, and the horizontal movement is guided. This is to ensure that the meshing of the respective gear parts starts and continues with high accuracy.

As shown in FIG. 29, through holes 14h and 30h are provided behind the rack sliders 4 and 30, respectively, through which transmitted light for tape end detection passes. These through holes 14h and 30h are A on the left and right sides as shown in Fig. 30.
The rack sliders 14 and 3 are formed with a spacing of -B.
0 horizontally moves from the rear to the front, the transmitted light from the light source 400 for detecting the end of the tape is transmitted at the rear,
It is designed to switch to shielding in the middle and transparent in the front. As for this timing, for example, the through hole 14h is switched from transparent to shielded immediately after the rack slider 14 starts moving from the rear position, and the through hole 30h is switched from transparent to shielded a little after the through hole 14h becomes shielded. Set it to change. As shown in FIG. 28, the output timings of the photosensors 23 and 47 are made to have a time difference, and the photosensors 23 and 47 for detecting the end of the tape are
This is to detect the third stop position using the time difference between the outputs.

Horizontal recesses 14i and 30i are provided on the outer sides of the rack sliders 14 and 30 in the front and back direction, respectively, and the through holes 14h and 30h for guiding the transmitted light for detecting the tape end described above are formed in the recesses 14i and 30i. It is located inside. As shown in FIG.
b.

45b are inserted with a clearance so that they overlap when viewed from above the set. Convex portion 2 of sensor holder 22°45
2b and 45b have through holes 22a through which transmitted light for tape end detection passes.

45a is provided, and photo sensors 23.degree. 47, which are light receiving elements for tape end detection, are held on the left and right outer sides thereof. As a result, the light reaches the photosensors 23 and 47 through the external light through holes 22a and 45a from the air vent hole of the upper cabinet (not shown), for example, and operates the control section reliably.

Further, a sensor shutter 19 is rotatably supported on the rear inner side of the side chassis 10 by a sensor shutter shaft screw 21 (see FIG. 32).

The sensor shutter 19 is a lever that operates to block or transmit the light from the light source 400 to the light sensor 23 through the transmission hole 10f, and is normally biased by the shutter spring 20 in the transmitting direction. . At a position slightly before the five tray assemblies are slotted in and end their horizontal movement, and at a position housed in the front cabinet, one sensor shutter is placed at the upper left rear end of the tray frame 60 of the tray assembly 59 at the timing shown in FIG. The shape 16j of the rack slider 14 is rotated so as to block or block the transmitted light passing through the through hole 14h of the rack slider 14, thereby setting a monitoring section, and moving the third stop position to a desired position. Set to position. By this,
Highly reliable drive control is achieved. In addition, by setting the third stop position before switching from horizontal to vertical operation, it is possible to switch the driving force between vertical operation and vertical operation, which requires a relatively large driving force compared to horizontal operation. Since it has a nT performance, power saving can be achieved.

Here, the output of the photosensor 23.47 is output by the control unit 300.
(See Figure 11). The control unit 300 has an abnormality detection logic that counts the time from the start of slot-in until the third stop position is reached, and when a predetermined time has elapsed, determines that the operation is abnormal and reverses the drive motor 35. is included. This predetermined time is set to be several times the normal time in consideration of environmental changes, changes over time, variations, etc. Therefore, for example, the hole 6 of the tray plate 61
], If the slot is inserted with a finger inserted into c, it will take a considerable amount of time for the drive motor 35 to release its reverse rotation after being caught, but due to the effect of the sensor shutter 19, a small driving force is generated. It will be moved to the third stop position in a short time, and the pinching force will be small.
Moreover, since the time required to release the reverse rotation of the drive motor 35 is extremely short, safety for the operator is maintained.

Abnormality detection using one of the above sensor shutters (safety measure)
As a means for this, the shape of the left rear end of the tray frame 60 is changed, and the timing of the shielding and transmitting operations of the sensor shutter 9 is changed as shown in FIG. 33 until the tray assembly 59 is stored in the front cabinet. By providing a monitoring section that is repeated several times, it is possible to speed up detection. By dividing the period from the start of slot-in to the third stop position into small sections by blocking and transmitting the sensor shutter 19 several times, the control unit 300 determines the time required to move each section and detects an abnormality. Therefore, the detection time is greatly shortened, and even if a hand or finger is caught, the drive motor 35 can be reversed almost instantaneously.
Furthermore, the safety can be improved.

Note that the means for detecting abnormalities by dividing the area from the start of slot-in to the third stop position is not limited to the above example, and a rotating plate with slits (not shown) that operates in response to the operation of the tray assembly 59 may be used. Alternatively, it is also possible to divide and detect the signals obtained by a combination of a slide plate and a photodetector, or a combination of a plurality of operating parts and switches provided in the tray assembly 59.

Side chassis 10. Shift gears 18 and 34 are pivotally supported inside each of the rear portions of the right 26 so as to be rotatable through a predetermined angle. The shift gears 18, 34 are each biased in one direction by a shift gear spring 17.33.

The shift gear 18.34 is connected to the tray rail 7 as described above.
6.80 rear upper rack gear part 76b.

80b and the rear upper rack gear parts 14f and 30f of the rack sliders 14 and 30, and the rearward movement of the tray rail 76, 80 causes the rack slider 1
4 and 30 in the front direction, and move the rack slider 14.
The rearward movement of 30 moves the tray rails 76 and 80 in the front direction, thereby switching the movement of the tray rails 76 and 80 and the rack slider 14°30.

Drive gears 16 and 32 are rotatably supported on the outer sides of the lower front surface of the side chassis 10.26. The drive gears 16 and 32 are the rack gear portions 14e on the lower front side of the rack sliders 14 and 30, respectively.
, 30e to operate them.
a, 32a, and tray drive gears 52, 5B, which will be described later.
It is comprised of outer gear parts 16b and 32b that are driven by meshing with the outer gear parts 16b and 32b. The ratio of the number of gear teeth between the inner gear parts 16a, 32a and the outer gear parts 16b, 32b is 1:2, and when performing phase matching of the gears, there is a point where the phases match every two teeth. Assembly work efficiency is greatly improved. Note that the ratio of the number of gear teeth does not have to be 1:2, but is 1:an integer, and the ratio of the small gear parts 52a, 53a of the tray drive gear 52.53 is 1:2.
If the ratio of the number of gear teeth of the large gear portions 52b and 53b is the same, the same effect can be obtained. The outer gear parts 16b and 32b of the drive gear 16.32 are the rack slider 14.30.
It also serves to prevent the rack from floating, and a relief taper is provided so as not to interfere with the rack slider 14.30 during rotation.

At the inner rear of each side chassis 10.26, there is a pair of narrowed portions 10a as described above.

26a is provided to accurately guide the left and right sides of the five tray assemblies. Further, at the inner rear of each of the side chassis 10.26, a pair of side chassis tray regulating portions 12°28 are provided as described above.
Reliably regulating the position of the tray lifter assembly 1 in the front and back direction,
Rack gear part 76 at the rear upper part of the tray rail 76°80
80b and the shift gears IB and 34 achieve highly accurate gear meshing. Also side chassis 10.26
As described above, a pair of side chassis tray regulating portion fronts 13.29 are provided on the inner front side of each of the side chassis tray regulating portions 77.29 in the slot-out state.
81 to accurately guide the left and right sides of the five tray assemblies, and to reduce vertical wobbling of the five tray assemblies in the slot-out state.

A switch 24 for tray down detection is provided at the rear lower side of the side chassis assembly 25. The switch 24 detects whether it is moving horizontally or vertically, and is driven by the lower end surface 30j of the rack slider 30, and when the rack slider 30 is at the rear, that is, from the slot-out position of the tray assembly 59, the horizontal movement ends. It is OFF until then, and it is ON from immediately after the right rack slider 30 moves forward until the end of the forward movement, and from the start of vertical movement of the five tray assemblies to the slot down position. Switch 24 is used to determine slot out position and slot down position.
Due to the combination of the tray detection switch 90 and the tray detection switch 90, when only the tray detection switch 90 is ON, the slot out position
When both the tray detection switch 90 and the switch 24 are ON, the slot down position is determined by the control unit 300.

As a result, even if the detection circuit is reset due to a power outage or unplugging during operation, for example,
There is no need to create a special logic program to determine the position of the tray assembly 59, and the position can be determined instantly by simply providing a switch 24 that detects whether it is moving horizontally or vertically. This makes it possible to achieve quick control that is straightforward and appropriate for each case.

A sensor holder 22 is fixed to the left outer side of the side chassis 10. Rack slider of sensor holder 22] 4
Several protrusions 22b are provided on the side to prevent the rack slider 14 from floating toward the left outer side. As a result, the rack slider 14 only engages with the simple-shaped rack slider guide boss 11, and no washers or the like are required, contributing to a reduction in the number of parts.

The sensor holder 22 also has a relay board 23a on the outside thereof.
is installed. The terminals of the photosensor 23 are soldered and attached to this relay board 23a. Note that the surface of the relay board 23a is painted black, and depending on the set, it is used to prevent outside light entering from the air vent hole on the left side of the cabinet from passing through and causing the photosensor 23 to malfunction. are doing. This results in
Intrusion of external light into the photosensor 23 is reliably prevented.

A drive motor 35 is screwed to the rear of the side chassis assembly 25, and a drive pulley 36, which is held and fixed to the shaft of the drive motor 35, transfers the driving force to the belt 44.
The signal is transmitted to the pulley gear 42 via. A belt cover (not shown) is installed on the right outer side of the belt 44 to prevent the belt 44 from coming into contact with wiring materials, etc. of the set.

Three tray drive assemblies that reduce and transmit the driving force of the drive motor 35 are provided on the right outer side of the side chassis assembly 25, and the three tray drive assemblies include a tray drive base 40, a reduction gear 41, a pulley gear 42, and a relay It is composed of a gear 43, the belt 44, a sensor holder 45, a relay board 46, and a photosensor 47.

The tray drive base 40 rotatably supports a reduction gear 41, a pulley gear 42, and a ψ joint gear 43 on its right outer side. The driving force transmitted to the pulley gear 42 by the belt 44 is transmitted to the first stage reduction gear 41 by the pulley gear 42.The reduction gear 41 performs second stage deceleration and is transmitted to the relay gear 43. Relay. The gear 43 transmits the signal to a connector gear 50, which will be described later.The tray drive base 40 is fixed to the side chassis 26.

A sensor holder 4 is installed on the right outer side of the tray drive base 40.
5 is fixed. Several protrusions (not shown in FIG. 3 for illustration reasons) are provided on the rack slider 30 side of the sensor holder 45, and these protrusions pass through the recessed holes in the tray drive base 40. This restricts the rack slider 30 from floating to the right outside. As a result, the rack slider 30 only engages with the simple-shaped rack slider guide boss 27, and no washers or the like are required, contributing to a reduction in the number of parts.

A relay board 46 is attached to the outside of the sensor holder 45. The terminals of the photosensor 47 are attached to the relay board 46 by soldering. The surface of the relay board 46 is painted black, and depending on the set, this may be done to prevent outside light entering from the air vent hole on the right side of the cabinet from passing through the board and causing the photosensor 47 to malfunction. is prevented. Most of the various detection signals are collected on the relay board 46, aggregated, and connected to an electric circuit. As a result, the photosensor 47 is reliably blocked from intrusion of external light in the same manner as the photosensor 23.

The rear portion of the reinforcing plate is composed of a rear reinforcing plate 37 and a cassette lid opener 38. As shown in FIG. 35, the rear reinforcing plate 37 has four or more positioning holes 37b provided on the left and right front and back, or a positioning portion 1 provided above the side chassis 10.26.
0g and 26g, and is screwed and fixed to the side chassis 10.26. The positioning part provided above the side chassis 10.26 has a straight shape without bending, etc., and the four or more positioning holes provided on the left and right front and rear of the rear reinforcement plate 37 are simultaneously machined in one process. The side chassis 10.26 can thus maintain very precise width dimensions and mutual parallelism.

Therefore, there is no need to use a special assembly jig during assembly. The rear reinforcing plate 37 not only reinforces the operating mechanism housing but also serves as a limiter when the upper cabinet is deformed due to external force being applied to the upper part of the set. Also, after the reinforcing plate 3
7 is provided with a hole 37a so that the tape running parts of the mechanical deck can be seen from diagonally above the set, in consideration of set adjustment workability. The cassette lid opener 38 is located after the reinforcing plate 3.
7, and functions to open the lid 201 of the cassette tape 200 and the cassette stopper 82 during the slot-in operation (see FIG. 24).

Reinforcement plate front assembly 84, reinforcement plate front 85, door lock lever 8
6, 87, two door lock lever springs 88, a tray detection lever 89, and a tray detection switch 90. In front of the reinforcement plate 85 are positioning holes 85 provided on the left and right sides.
a indicates a positioning portion 10e provided on the side chassis 10.26.

26e, and is screwed and fixed to the side chassis 10.26 so as to maintain a highly accurate width dimension. The front reinforcing plate 85 not only reinforces the operating mechanism housing but also serves as a limiter when the upper cabinet is deformed due to external force being applied to the upper part of the set.

Further, when the cassette tape is taken out, if the front side of the cassette tape is lifted by an unexpected force, the front part of the front reinforcing plate 85 comes into contact and becomes a limiter (see FIG. 36), and the cassette tape 200 is removed from the cabinet 210. This prevents the cassette tape loading/unloading opening from being lifted and deformed.

For this reason, the front portion of the front reinforcing plate 85 is bent upward at a predetermined angle.

A tray detection bar 89 is rotatably supported on the lower right side of the front reinforcing plate 85 and operates a tray detection switch 90 fixed to the front reinforcing plate 85 with screws. The rear part 89a of the tray detection lever 89 is operated by the convex part 30k of the rack slider 30, and the front part 89b of the tray detection lever 89 is operated by the protrusion 80c of the tray rail 80, so that both the slot out position and the slot down position are operated. Turn on the tray detection switch 90.

At positions other than the above, the tray detection lever 89 is biased in the OFF direction by the restoring force of the tray detection switch 90 itself.

Door lock levers 86 and 87 are rotatably supported on the left and right inner sides of the front reinforcing plate 85, respectively.

Door lock levers 86 and 87 are operating posts 86a.

87a10 Tsuku claw parts 86b, 87b and operation post 86c
, 87c. And door lock/(-86,
Reference numerals 87 indicate grooves 60d and 6[
1c as shown in FIG. 37, and is controlled by the grooves 60d and 60c to lock or release the locking member 212 of the cassette door 211 that opens and closes the cassette tape loading/unloading opening of the cabinet 210 (FIG. 38). .

(See Figure 39). The cassette door 211 is the cabinet 2
The biasing spring 213 is rotatably supported by the energizing spring 213.
is energized in the closing direction by That is, the door lock levers 86 and 87 are each biased and held in a direction to lock the lock member 212 of the cassette door 211 by a door lock lever spring 88. and,
When the slot-out operation of the tray assembly 59 is started from the slot-in state, the cassette door 2]1 is pushed by the five tray assemblies and opens against the spring force of the biasing spring 8 (see FIG. 38(b). )reference). At this time, the door lock levers right and left 86.87 have their operating posts 86c, 8
7c is still the groove 60d on the left and right top of the tray frame 60,
Since it is engaged with 60c, the door lock levers 86, 87
The lock claws 86b and 87b are released from the lock member 212 of the cassette door 211 and released. A door lock lever is attached to the tip of the lock member 212 of the cassette door 211.
A tapered shape is provided to push away the locking claws 86bb and 87b of the cassette door 211 when the cassette door 211 is closed. .87 lock claw parts 86bb, 87b
This arrangement is designed to ensure that the cassette door 211 can be closed completely even if the cassette door 211 may interfere. When the five tray assemblies are slotted in from this slot-out state, the operating posts 86c and 87c of the door lock levers 86 and 87 are removed from the grooves on the left and right upper portions of the tray frame 60, and the door lock lever springs 88 cause the right and left door lock levers to move. 86.87 lock claw part 86bb,
87b is engaged with the locking member 212 of the cassette door 211, and the cassette door 211 is locked in the closed position. If the cassette door 211 is allowed to open when the cassette tape 200 is already in the set, an accident may occur where the player accidentally performs the slot-out operation with his hand inside the set, causing his hand to be caught and the hole to be opened. Although this may be a concern, since the cassette door 211 is closed and locked when the five tray assemblies are housed in the cabinet 210, the operator will not make the above-mentioned diameter holes.

When the five tray assemblies are slotted out in the front direction, first move the operating bosses 86a of the door lock levers 86 and 87.
, 87a are engaged with grooves on the upper left and right sides of the tray frame 6o, and the door lock levers 86, 87 are operated.
lock claw portion 86b.

After 87b is released from the locking member of the cassette door, it is pushed by the tray assembly 59 and the cassette door 211 is opened.

A second open/close switch 100 is provided between the cassette door 211 and the cabinet 210 via an elastic member (not shown) (see FIG. 39), and the closed position of the cassette door 211 is It is determined by the preload of In this state, the second open/close switch 100 is turned OFF with a predetermined clearance.
When the cassette door 211 is further closed against the elastic force of an elastic member (not shown), the second open/close switch 100 is turned on. Note that the elastic member (not shown) that is the limiter of the cassette door 211 can also be used as the second open/close switch 100 itself. Furthermore, when the cassette door 211 is closed, the slot can be slotted out by pressing the separately provided open/close switch 101, but it is also possible to slot out by pressing the cassette door 211 itself. It has become.

The output ends of the second oven/close switch 100 and the open/close switch 10 are connected to the control section 300, and the cassette door 21 is opened/closed via the control section 300 in response to the ON/OFF state. Realize.

The reinforcing plate lower assembly 54 includes a front lower reinforcing plate 55, two left and right pop-up control lever holding plates 56, two left and right pop-up control levers 57, and two left and right pop-up control lever springs 58.

The lower front reinforcing plate 55 is attached to be sandwiched between the left side chassis 10, the right side chassis 26, and the front reinforcing plate 85. The lower front reinforcing plate 55 reinforces the operating mechanism housing, and also serves as a reinforcement plate for the left side chassis 10 and the right side chassis 26.
It maintains a highly accurate width dimension between the parts and also serves to hide the interior of the mechanical deck from the operator. Reinforcement plate front bottom 5
A pop-up control lever holding plate 56, which rotatably supports a pair of pop-up control levers 57, is fixed to the left and right portions of the pop-up control lever 5 by screws. As previously explained, the pop-up control lever 57 engages the bent portions 62c and 66c provided at the rear ends of the left and right pop-up sliders 62.degree. 66 of the tray assembly 59, thereby providing a selective pop-up mechanism. Operate. The pop-up control lever 57 is biased by a pop-up control lever spring 58 in the direction of engaging the bent portions 62c, 66c at the rear ends of the left and right pop sliders 62,66,
In the slot-out operation, the bent portions 62c and 66c at the rear tips of the left pop-up slider 62 and right pop-up slider 66 are engaged and operated, and in the slot-in operation, the rear tips of the left pop-up slider 62 and the right pop-up slider 66 are bent. It can be pushed by the parts 62c and 66c and rotated in the direction of escape.

The drive transmission unit that synchronously transmits the driving force to the left and right side chassis parts includes four connect springs and 50 connect gears.
, a tray drive shaft 51, and tray drive gears left and right 52 and 53. The tray drive shaft 51 is provided passing through the left and right side chassis 10.26, and at the left and right ends of the tray drive shaft 51, left and right tray drive gears 52.53 synchronize and maintain the phases of the left and right gears. . Tray drive gear left and right 52.
53, small gear parts 52a and 53a which mesh with and operate rack gear parts 60a and 60b provided inside the left and right side chassis 10.26 at the lower left and right sides of the tray frame 60, respectively, as shown in FIG. , this small gear portion 52a.

The bearings with the left and right side chassis 10.26, which have a slightly larger diameter than the outer diameter of 53a, are part 52d.

53d, and rack gear parts 14e and 30e provided on the lower front sides of the left and right rack sliders 14.30, respectively.
It is comprised of large gear parts 52b and 53b that mesh with and operate these parts (see FIG. 41).

By doing this the tray drive gear left and right 5
2.53 can be resin molded using a simple upper and lower mold. These tray drive gears left and right 52
．． 53 is a small gear portion 52a which is rotatably supported by a hexagonal extruded tray drive shaft 51 as shown in FIG.

53a is set to a number of teeth that is a multiple of six. This allows the left and right tray drive gears 52 and 53 to be easily assembled without worrying about the left and right gear phases. In addition, the small gear parts 52a, 53a and the large gear part 52
b, 53b gear teeth ratio is drive gear left and right 1
6.32, the ratio of the number of gear teeth between the inner gear parts 16a, 32a and the outer gear parts 16b, 32b is 1:2 (for example, 1
2 teeth: 24 teeth), and a mark X that matches the phase is provided for every two teeth (see Fig. 41), and is assembled so that these marks match.

Note that the ratio of the number of gear teeth does not have to be 1:2, but is 1:an integer, and the number of gear teeth on the inner gear portions 16a, 32g and the outer gear portions 16b, 32b of the left and right 16°32 of the drive gear. A similar effect can be obtained if the ratio is the same.

In addition, the small gear parts 52a and 53a of the tray drive gear left and right 52 degrees 53 are the drive gear left and right 16.3.
2, the inner gear part 16a.

32a, and the inner gear parts of the left and right shaft gears 18.34 and the rack sliders mesh with the rear upper gear parts 76b and 80b of the left and right tray rails 76.80, respectively. Rack gear parts 14f and 3 on the rear upper side of the left rack slider 14 and right rack slider 30, respectively.
The outer gear portion that meshes with 0f uses the same gear, but the small gear portions 52a and 53a of the tray drive gear left and right 52.53 and the drive gear left and right 16° 32
The inner gear parts 16a and 32g do not necessarily have to have the same number of teeth or the same module. In this case, the small gear parts 52a, 53 of the left and right tray drive gears 52,53
a, the ratio of the pitch circle diameter of the inner gear parts 16a, 32a of the left and right drive gears 16.32, and the ratio of the pitch circle diameter of the inner gear part and the outer gear part of the left and right shaft gears 18°34 should be the same.

For example, if the pitch circle diameter of the small gear parts 52a, 53a of the tray drive gear left and right 52.53 is made larger than the pitch circle diameter of the inner gear parts 16a, 32a of the drive gear left and right 16.32, the tray The reduction ratio of the horizontal movement of the five tray assemblies driven by the left and right drive gears 52 and 53 is increased, and the force when fingers or hands are pinched is weakened. As mentioned above, since the operating load for horizontal movement is smaller than that for vertical movement, the drive motor 35 can be Safe and reliable driving can be achieved with one type of driving voltage. In this way, by controlling the drive motor 35 with one type of drive voltage and weakening only the force when a finger or hand is caught, only horizontal movement can be performed with a low drive voltage. Compared to the case where the force when a finger or hand is caught is weakened by implementing this method, it is possible to control the motion more quickly.

Furthermore, a connect gear 50 is coaxially supported on the right side of the tray drive gear 53 via a connect spring 49 . The drive force from the relay gear 43 is transmitted to the connect gear 50, and is transmitted to the right and left tray drive gears 53, 52 and the tray drive shaft 51. In this way, first, install the tray drive gears right and left 5B, 52, and the tray drive shaft 51.
By transmitting the driving force to the left and right side chassis parts, the effects of backlash of gears in the intermediate path are eliminated, allowing smooth slot-in and slot-out operation.

The connect spring 49 is connected to bosses 53c and 5 protruding from the tray drive gear 53 and the connect gear 50, respectively.
0a are brought into contact with each other and the two are held in place. When in the slot-out state (see FIG. 43(b)), the tray drive gear 53 is connected via the connect gears 50 to 49, and when in the slot-in state (see FIG. 43(a)), the tray drive gear 5 is connected.
The driving force is directly transmitted from the tray drive gear 53 to the tray drive gear 53. When the tray assembly 59 is pushed backward in an attempt to start slot-in from the slot-out state (Fig. 43(
(see C)), the tray drive gear left 52,
The tray drive gear right 53 rotates. At this time, since the connect gear 50 is directly connected to the drive motor 35, it cannot rotate under a large operating load, but the rotation of the left and right tray drive gears 52 and 53 is absorbed by the deflection of the four connect springs. When the five actuating parts of the tray assembly are disengaged from the tray detection lever 89, the tray detection switch 90 is switched from ON to OFF, the drive motor 35 is rotated by the circuit, and slot-in is started.

Note that the left and right tray drive gears 52 and 53 have room to further rotate relative to the connect gear 50 by the amount of deflection of the connect spring 49 even after the tray detection switch 90 is switched from ON to OFF. As a result, when the tray assembly 59 is pressed with a small operating force against the spring force, the connect spring 49 allows the tray assembly 59 to move by the amount of deflection, and the tray detection switch 90 is turned on to realize the slot-in operation as described above.

As an alternative to the connector spring 49, the tray assembly 5
It is also possible to use a click mechanism or the like to hold the slot out position at 9. In this case, the drive motor 35 continues to rotate until the slot-out position is held by a click mechanism or the like at slot-out, and then, after the tray detection switch 90 is switched from ON to OFF, the drive motor 35 is rotated to a certain extent with a margin. The reverse rotation rotates the connect gear 50 relative to the left and right tray drive gears 52 and 53. Tray drive gear left and right 52.
53 is separated from the drive motor 35 until the bosses 53c and 50a protruding from the tray drive gear 53 and the connect gear 50 come into contact with each other, so the insertion force required to insert the tray drive gear into the slot is only the force to release the click mechanism, etc. Similarly, slot-in can be started with a small pressing force.

In addition, even when the connect spring 49 is used, the rotation is continued even after the slot is out, and the four connect springs bend and escape, as in the case where the above-mentioned click mechanism is used, and the four connect springs bend and escape, causing the tray drive gear right 53 and the connect gear 50 to each Slot out is ensured by transmitting the driving force directly through the boss coming out from the tray, and then, even after the tray detection switch 90 is switched from ON to OFF, the drive motor 35 is reversed to a certain extent with a margin and then stopped. By rotating the connect gear 50 by a predetermined angle relative to the left and right tray drive gears 52 and 53, the force of the connect spring 49 can be further reduced, and a smaller pressing operation can be achieved. It can be controlled by force.

A damper 92 is provided on the outer front lower side of the side chassis right assembly 25 so as to mesh with the drive gear right 32. The damper 92 has the effect of smoothing out the slot out operation. For example, if it has a one-way clutch function, and the damper is removed when the slot is in and the damper function is activated when the slot is out, the insertion force for slotting in will be reduced by the damper. It is possible to maintain good operability. As shown in FIG. 44, the damper 92 is composed of a gear portion 92a that meshes with the right drive gear 32 and a damper body 92b.
This rotation boss 92c is provided coaxially with the rotation center axis of
passes through an elongated hole 26f, which is a guide portion, provided on the right side chassis 26 and projects into the inside of the right side chassis 26. A rotary plate 110 having a relief part 110a and a locking part 110b is fixed to the rotary boss 92c inside the right side chassis 26, and the damper 92 can be rotated at the same time and slidable along the elongated hole 26f. keeping. The locking portion 110b of the rotating plate 110 is located on the right side 26 of the side chassis.
When the right drive gear 32 rotates in the slot-out direction, the locking shape 26g engages with the right drive gear 32. , the damper 92 is energized to the front side and the locking shape 26 of the side chassis right 26
g engages with the locking portion 110a of the rotary plate 110 to stop the rotation of the damper body 92b, so the damper function works (see Figure M46 (b)). And drive gear right 3
2 rotates in the slot-in direction, the damper 92 is biased toward the rear due to the rotational direction of the right drive gear 32, the slight rotational load between the rotation boss 92c and the elongated hole 26f, and the shape of the relief part of the rotation plate 110. The locking portion 110b of the rotary plate 110 escapes from the locking shape 26g of the right side chassis 26, and the damper body 92b rotates together with the gear portion 92a, so the damper function does not work (see Fig. 46(a)). ). The rotational direction of the drive gear right 32, the elongated size 26f of the side chassis right 26, the rotation boss 92c and the elongated hole 26f
A slight rotational load, the locking shape 26g of the right side chassis 26, and the rotary plate 110 cooperate to form a one-way effective damper.

Next, the loading and unloading operations of the cassette tape will be explained.

First, in a stopped state in which no cassette tape is stored, the tray assembly 59 is stopped at the third stop position.

When slotting out the tray assembly 9 from this state, the open/close switch 101 or the cassette door 211 is pressed. Then, the second open/close switch 100 operated by the open/close switch 10a or the cassette door 211 is turned on. The open/close switch 101 and the second open/close switch 100 are connected to the control section 300 as shown in FIG. 11, and output an ON signal to the control section 300. The control unit 300 outputs a drive signal to the drive circuit 301 in response to the ON signal. The drive circuit 301 rotates the drive motor 35 with the first voltage from the power supply circuit 302, and rotates the drive motor 35 with the first voltage from the power supply circuit 302.
Slot 9 out. At this time, tape cassette 2
00 is not inserted, the tray assembly 59 is moved to 2 due to the action of the aforementioned selective pop-up mechanism.
The pop-up lever 70 is controlled to the lowered position, and the cassette tape 200 can be accommodated.

That is, while the tray assembly 59 is moving toward the front, the tray detection lever 89 is operated by the operating section of the tray assembly 59 at a position slightly behind the slot out end, and the tray detection switch 90 is turned from OFF to ON. Switch.

This tray detection switch 90 is connected to the output terminal of the control section 3.
00, the control unit 300 detects this, continues rotating the drive motor 35 with the first voltage for a predetermined time, and then reverses the drive motor 35 with the second voltage for a predetermined time. Next, the drive motor terminals are short-circuited and the brake is applied to stop the drive motor, and then the drive motor terminals are set in an oven and standby. The first voltage is a voltage for normal operation, and the second voltage is set lower than the first voltage in a power supply circuit set for safety measures, which will be described later.

The reason why the rotation is continued for a predetermined time at the slot out end is to ensure that the drive motor 35 is energized to the end position.After that, the drive motor 35 is reversed for a predetermined time by connecting the tray drive gears 52 and 53 to the connect gear 50 and the left and right tray drive gears.
This is to provide a predetermined amount of relative rotation to the five tray assemblies for the next slot-in operation. By inverting the drive motor 35 for a predetermined period of time using the second voltage and then applying a short brake between the drive motor terminals, this predetermined amount of relative rotation can be achieved by turning on the tray detection switch 90 when the five tray assemblies are pushed in. From O
Even after switching to FF, the tray drive gear 53 can be accurately stopped at a position where there is a predetermined margin for relative rotation with respect to the connect gear 50. The subsequent oven between the terminals of the drive motor is a countermeasure in case the drive motor 35 is not driven for some reason. If the tray is not inserted automatically, manually assemble the tray 5.
9 may be pushed into the cabinet 210, but even if the drive motor 35 becomes operational halfway through, the drive motor 35 is in an oven between the terminals, so compared to a short circuit between the terminals, the drive motor 35 is not activated. In the oven between the motor terminals, it can be pushed in with a relatively light pressing force. Furthermore, even when the set is not powered on, the tray assembly 59 can be manually pushed into the cabinet 210 with a relatively light pressing force since the oven is connected between the drive motor terminals.

Next, when slotting in from the slot-out state, it is carried out by switching the oven/close switch 101 or pressing the tray assembly 59. That is, when the open/close switch 101 is pressed, the control unit 300 turns on the switch 101.
is detected and the drive motor 35 is rotated at the second voltage via the drive circuit 301 and the power supply circuit 302 to be inserted into the slot. In addition, when the tray assembly 59 is pushed, the tray drive gear left 52 and the tray drive gear right 53, which are operated by the rack gear parts 60a and 60b on the lower left and right sides of the five tray assemblies, are connected to the connect gear by the deflection of the connect spring 49. Since it rotates relative to the drive motor 50, it is separated from the drive motor 35 and can be pushed in with a light pressing force. When the tray assembly 59 is pushed in and the operating part of the tray assembly 59 is disengaged from the tray detection lever 89, the tray detection switch 90 is switched from ON to OFF, and the control unit detects this and switches the drive motor 35 to the drive circuit 301 and the tray detection switch 90. It is rotated at the second voltage via the power supply circuit 302 and inserted into the slot.

At the slot out end, the transmitted light for tape end detection is transmitted on both the left and right sides, but near the end of horizontal movement, the left side is blocked by the operation of the left rack slider 14 or one sensor shutter and the right rack slider 30. , a third stop position is set where the right side is transparent. This third stop position is an intermediate position between the slot-out position and the slot-in position, and is after the position where the tray assembly 59 is stored in the cabinet 201.
It is set slightly after and before the two vertical movements start.

Note that when the cassette tape 200 is inserted into the slot, the left side of the transmitted light for tape end detection at the third stop position is switched to shielding, and the cassette detection switch 8 is not turned OFF. , the control unit 300 detects this and stops the drive motor 35 at the third stop position.

Then, when the cassette tape 200 is loaded and inserted into the slot, the cassette detection switch 8 is switched from ON to OFF before reaching the third stop position.

Then, the control unit 300 determines the position where the left side of the transmitted light for tape end detection is switched to shielding as the third stop position, and changes the voltage of the drive motor 35 from the second voltage to the first voltage. A switching signal for switching to the voltage is output to the drive circuit 301. The drive circuit 301 switches the voltage from the power supply circuit 302 to the first voltage to drive and control the drive motor 35, and further performs slot-in operation. The tray assembly 59 is horizontally moved rearward by left and right tray drive gears 52 and 53 that mesh with the lower left and right rack gear parts 60a and 60b, but at the end of the horizontal movement, the left and right tray rails 76 and 80 The rear upper rack gear portion 76b, 8
0b meshes with the left and right shaft gears 18.34 to operate them, and the left and right shaft gears 18.34 mesh with the rack gear parts 14f and 30f at the rear upper part of the left and right rack sliders 14.30 to move them toward the front. move in the direction. The rack gear parts 60a and 60b on the left and right lower sides of the tray frame 60 of the tray assembly 59 are disengaged from the left and right tray drive gears 52.53, and the rack sliders left and right 14.30 mesh with the left and right drive gears 16.32. , it will be moved further forward. This tray rail left and right 76°80 to drive gear left and right 16.32
The operation switching to is performed as described above, and the tray assembly 59 is housed and held in the tray lifter assembly 1.

When the left and right rack sliders 14.30 are moved forward, the lifter operating section 3 engaged therein is guided by the lift grooves provided on the left and right rack sliders 14.30, and the tray The lifter assembly 1 is lowered, and the tray assembly 59 held by the tray lifter assembly 1 is lowered to load the cassette tape 200 into the tape drive unit. When the left rack slider 14 starts moving forward, the switch 24 is turned from OFF to ON. The right rack slider 30 operates the tray detection lever 89 at the end position of the movement in the front direction, and then operates the tray detection switch 9.
0 from OFF to ON. The control unit 300 changes the tray detection switch 90 from OFF to O when the switch 24 is ON.
Detecting that the switch has been switched to N, the drive motor 35 is stopped,
Ends slot-in operation.

Note that the control unit 300 monitors the time required from the start of slot-in to the third stop position, and if the abnormality detection time set by multiplying the normal operating time by a margin coefficient has elapsed, abnormality detection is activated. Then, the drive motor 35 is reversed and the tray assembly 59 is ejected. Therefore, cassette tape 200
If the operator accidentally inserts his/her hand or finger into the slot and gets caught between the cabinet 210 and the tray frame 60, an abnormality detection is activated and the drive motor 35 is reversed and released. , slotted out. At this time, the horizontal movement of the slot-in is driven by a second voltage, so even if a hand or finger is pinched, the force is reduced and the safety of the operator is maintained. .

The above monitoring time is from the start of slot-in to the third
Instead of the time required to reach the stop position, the monitoring interval may be set from the start of slot-in until the cassette detection switch 8 is switched from ON to OFF. That is, the position at which the cassette detection switch 8 changes over the monitoring time is set slightly before the third stop position, and at a position where the hole in the tray assembly 59 is hidden inside the cabinet 210.
The moving section to be monitored is shortened, and the abnormality detection time set by multiplying the normal operating time by a margin coefficient is shortened, and the time required to release the pinched hand or finger, for example, is shortened. According to this, in the state without the cassette tape 200, the operating load is smaller and the operation is faster than in the state with the cassette tape, but up to the switching position of the cassette detection switch 8 when the cassette tape is present. This is because the third stop position can be reached in the time of .

Further, when a cassette tape is present, switching from the second voltage of the drive motor 35 to the first voltage during slot insertion may be performed at the switching position of the cassette detection switch 8. In this case as well, when slot-in is performed without a cassette tape, the tape can be stopped preferentially when the third stop position is reached.

When the cassette tape is to be taken out from the slotted tray assembly 59, the open/close switch 101 is again operated or the five tray assemblies are pressed. Then, the control section 300 switches the open/close switch 101 or the second open/close switch.
A switching signal indicating that the close switch 100 is turned on is detected and the drive motor 35 is rotated in the slot out direction with the first voltage. The operation is switched from drive gear left 16 and drive gear right 32 to tray rail left 76 and tray rail right 80 in the reverse order of the slot-in case, and the five tray assemblies operate almost in the opposite direction to the slot-in operation. You will be slotted out smoothly. When the cassette tape is slotted out, the selective pop-up mechanism is actuated as described above, and one end of the two pop-up levers 70 is raised, lifting the front side of the cassette tape in the tray assembly 59, and placing it there. , the operator can remove the cassette tape from within the tray assembly 59. cassette tape 20
0 is taken out, one end of the two pop-up levers 70 is lowered again by the action of the selective pop-up mechanism, and is returned to its original position and accommodated, waiting in preparation for loading the next cassette tape.

In this manner, the cassette loading device transfers and guides the tray assembly 59 horizontally from the front of the cabinet onto the tape drive unit, and then switches from horizontal transfer to vertical transfer to guide the tray assembly 59 up and down, thereby transferring the cassette tape 200 to the tape drive unit. It is configured to be detachable. According to this, it becomes possible to stably transfer and guide the tray assembly 59 from the cassette tape attachment/detachment position protruding from the cabinet 200 to the tape drive section in the cabinet, thereby realizing attachment/detachment of the cassette tape 200. Furthermore, it becomes possible to realize a tray-type cassette loading system.

In the above embodiment, the case where the application is applied to a tray-type cassette loading device using a cassette tape wrapped with magnetic tape was described as a representative example, but the present invention is not limited to this, and for example, a compact disc ( The present invention can also be applied to a cassette loading device in a CD system or the like that uses a cassette containing CDs.

Therefore, it goes without saying that the present invention is not limited to the above embodiments, and that various modifications can be made without departing from the spirit of the invention.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide a tray-type cassette loading device that can realize accurate and reliable loading/unloading operations of cassette tapes.

[Brief explanation of drawings]

1 to 3 show a cassette loading device according to an embodiment of the present invention, in which FIG. 1 shows the slot-out state, FIG. 2 shows the slot-in process, and FIG. 3 shows the slot-in completed state. FIG. 4 is a perspective view showing a cassette tape to which the present invention is applied, and FIGS. 5 to 46 are views shown to explain details of each part of FIGS. 1 to 3. . 1...Tray lifter assembly, 2...Lifter 3.
...Lifter operation bin, 4...Guide roller, 5...
- Leaf spring, 6... Guide roller, 7... Roller shaft,
8...Cassette detection switch, 9.25...Side chassis assembly, 10.26...Side chassis, 11
．． 27...Rack slider guide post, 12.13
... Side chassis tray regulating section rear and front, 14.
30...Rack slider, 16.32...Drive gear, 18.34...Shift gear, 19...Sensor shutter, 21...Sensor shutter shaft screw, 23.47
... Photo sensor, 23 a, 46 ... Relay board,
24... Switch, 28, 2Q... Side chassis tray regulating section rear and front, 35... Drive motor, 36
... Drive pulley, 37... After reinforcing plate, 38... Cassette lid opener, 3... Tray drive assembly, 40
-... Tray drive base, 41... Reduction gear, 4
5... Sensor holder, 50... Connect gear, 51
...Tray drive shaft, 52.53...Tray drive gear, 54...Reinforcement plate front assembly, 55...
Lower front of reinforcing plate, 56...Pop-up control lever holding plate, 57...Pop-up control lever 59...Tray assembly, 60...Tray frame, 61...Tray plate, 62.66...Pop-up slider, 6
3.67...Cassette detection boss, 70...Pop-up lever 72...Cassette lid lock release lever
74.78...Click lever 76.80...Tray rail, 77.81...Tray rail position regulation part, 82...Cassette stopper, 84...Reinforcement plate front assembly, 85...Reinforcement plate front , 86° 87... Door lock lever 89... Tray detection lever 90... Tray detection switch, 91... Display member, 92... Damper 100... Second oven/close switch,
101...Oven/close switch, 110...
・Rotating plate, 200...Cassette tape, 210...
Cabinet, 250...C cassette adapter 3
00...Control unit, 301...Drive circuit, 302...
- Power supply circuit, 400... light source. Representative Patent Attorney Takehiko Suzue B Figure 11 Figure 3 Figure 16 Figure 7 Figure 20 (a) (b) Figure 8 Figure 23 Figure 4 (a) ) (b) Figure 7 Figure 5 Figure 26 Figure 2 Figure 36 Figure 9 Figure 40

Claims (1)

[Scope of Claims] A tray on which a cassette containing a recording medium can be attached and detached is provided in the front surface of the cabinet so as to be freely removable, and the cassette tape is transferred and loaded into a recording medium drive section in the cabinet via this tray. A cassette loading device comprising: a horizontal transfer mechanism that horizontally transfers the tray into and out of the front surface of the cabinet; a horizontal transfer mechanism that moves the tray up and down while facing the recording medium drive section; a lifting mechanism that can be attached to and removed from the tray; a switching means that is activated when the tray is switched from horizontal transfer to vertical transfer and from vertical transfer to horizontal transfer to switch between the horizontal transfer mechanism and the lifting mechanism; and a guide means for guiding from vertical transfer to horizontal transfer.