JPH0419861A - Cassette loading device - Google Patents

Abstract

PURPOSE:To attain a slot-in operation with the small operating power by transferring a tray to a 1st position from a 2nd position by means of a tray transfer means with no application of the force of a spring member when the working of the tray transfer means is controlled at the 1st position of the tray. CONSTITUTION:A pair of left and right tray drive gears 52 and 53 are provided to horizontally transfer a tray assembly 59. A connection spring 49 is added to transmit the driving force to the gear 53 in order to apply the spring force at the cassette tape loading/unloading position of the assembly 59. When the assembly 59 is pressed against the force of the spring 49, a tray detection switch is turned on and a drive motor is driven via a control part. Thus a slot-in operation is carried out. As a result, the slot-in operation of the assembly 59 is attained with the comparatively small operating power just by pressing the assembly 59 against the force of the spring 49.

Description

[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention is applicable to, for example, a video tape recorder (VTR).
The present invention relates to a recording/reproducing device such as the above, and particularly relates to a cassette loading device for loading the loaded cassette tape into a tape drive section.

(Conventional T Technique) Conventionally, in a VTR cassette loading device, 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 to be loaded and unloaded. The so-called front loading method and the so-called linear skating method in which the cassette tape is directly attached to and removed from the entire tape drive unit that is transferred to the outside of the cabinet are known.

However, in the former front-loading method, the inserted cassette tape is delivered to a transfer mechanism inside the cabinet and transferred, 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 configurations are required to organically couple the tray and tape drive.

However, unlike the conventional front loading method or linear skating method, the structure for organically connecting the tray and the tape drive unit is such that the tray on which the cassette tape is loaded is arranged so that it can be moved in and out of the cabinet. Because the cassette tape is stored in this tray and transferred to the tape drive unit for loading, it is difficult to directly use the structure of the conventional system. A configuration is required to realize handling operations and reliable tray transfer control.

(Problems to be Solved by the Invention) As mentioned above, the cassette loading device in which the tray is disposed in such a way that it can be taken in and out of the cabinet is different from the conventional method, so it is easier to handle and operate. , development of a configuration to realize highly accurate tray transfer control is required.

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 highly accurate tray transfer control with simple handling operations.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a tray for attaching and detaching a cassette containing a recording medium so as to be freely removable from the front surface of the cabinet,
In a cassette loading device that transfers and loads the cassette tape to a recording medium drive unit in the cabinet through this tray, the tray is driven by a drive source and the tray is moved to a second drive unit that protrudes from the front surface of the cabinet where the cassette is attached/detached. 1 position and a second position where the cassette is loaded into the recording medium drive unit, and when the tray is transported between the drive source and the slot-out position where the cassette is attached/detached. a tray transport means having a spring member that is engaged so that a spring force acts thereon; and the tray transport means is interlocked with a pressing operation in the slot-in direction at the first position of the tray, and is operated by controlling the drive source. a tray detecting means which adjusts the operation amount according to the amount of deflection of a spring member of the tray transporting means; and a tray detecting means which is interlocked with the operation of the tray detecting means and controls the driving source to drive the tray transporting means. and a control means for controlling the transfer of the tray.

(Function) According to the above configuration, when the tray in the tray transfer means is pressed against the spring force of the spring member, the tray detection means is activated, and in response, the control means activates the drive source. The tray is controlled to move from the first position to the second position. Moreover, when the tray transfer means is activated and controlled in the second position of the tray, the tray is controlled to be transferred from the second position to the first position without being acted on by the spring force of the spring member. As a result, the slot-in operation of the tray can be performed with a relatively weak operating force, which is simply pushing the tray against the spring force of the spring member of the tray transfer means.

(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 shown in 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 into 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 the tray assembly 59 is reciprocated with a guide section that reciprocates the tray assembly 59. It consists of a driving movement mechanism. Note that moving the tray toward the inside of the cabinet to position it from the slot-out state to the slot-down state will be referred to as slot-in.

For convenience, here, we will explain the front surface of the VTR set assuming that the operator (user) is standing facing the ejection port side of the cassette tape 200 of the VTR set when the VTR set is placed horizontally. (A direction), backward (B direction), left (C direction), right (D direction), top (E direction), and bottom (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 64 as main elements.
, 681, left and right pair of pop-up levers 70, left and right pair of pop-up lever springs 71, cassette lid lock lever 72, release lever spring 73, click lever 7478, click lever spring 75.79
, a tray rail 7680, a cassette 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 61a is provided at the rear center of the tray plate 61 to prevent erroneous insertion of the cassette tape 200 from front to back and upside down. Further, upwardly bent portions 61b are provided on the left and right rear sides of the tray plate 61 to serve as stoppers in the front and back direction when a cassette tape is loaded. Furthermore, the tray plate 61 is provided with a plurality of through holes 61c opened to avoid contact with the tape drive unit in the slot down state. The through hole 61c protrudes from the front surface of the cabinet in the slotted-out state, has a large area through which a hand or finger can pass, and is formed up to the front side (discharge side) side wall of the tray frame 60 that protrudes from the front surface of the cabinet. The shape of this through hole 61c is designed with operator safety in mind.
Even if the operator's hand or fingers are pinched, they are not pinched by the thin end face of the tray plate 61, but by the wide front frame 61, thereby preventing injury. This is because the force per unit area of the through hole 61c is significantly reduced, thereby almost eliminating the risk of injury to hands and 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 to prevent the risk of injury due to being pinched between the thin end face of the diagonal portion and the cabinet 210 if the angle becomes large.

Further, the through hole 61c may be provided one larger size so that the tray plate 61 has a substantially U-shape as shown in FIG. 7, without dividing it into a plurality of holes. And this through hole 61
In addition to the above-mentioned safety measures, cassette tape c also has the function of preventing the installation of anything other than a regular cassette tape by inserting a foreign object, such as a VH8-C cassette, into the hole and falling down.

Rack gear parts 60 are provided at the lower left and right sides of the tray frame 60.
a 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 an electrically conductive material and ensures electrical conductivity between the tray rails 76 and 80 and the tray lifter assembly 1. The open ends of the pair of lower grooves 76a and 80a are vertically tapered to facilitate engagement with the guide roller 4. The upper pair of 60c60d engages with door lock levers 86 and 87, which will be described later, to be guided in horizontal movement and to control the operation of the door lock lever 8687. The open ends of the upper pair 60c and 60d are tapered on the top and bottom and inside, and the door lock lever 86
, 87 to ensure 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, it is necessary to place the cassette tape 200 before hitting the cabinet 210. It has the effect of guiding you to the official location. The front, left and right, upper and lower corners of the tray frame 60 are curved with a predetermined radius to ensure safety so that the operator will not be injured by the edges. 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, and when the cassette tape 200 is inserted forwards and backwards, the external portion without the radius will face the curved portion 60k of the tray frame 60. 1Φ
People can't. 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 Yokota lever 2 of the C cassette adapter 250 for the well-known VH8-C cassette when the C cassette is not loaded.
51 is the storage location, and it is on the lower left side in terms of height. M60
Care has been taken not to spoil the appearance.

If the C cassette adapter 250 with an unopened C cassette is inserted into the slot, the C cassette unopened detection lever 251 passes through the '17460 c on the lower left side and connects to the groove of the tray rail 76, as shown in FIG. 7
6a, it is stopped by the guide roller 4 of the tray lifter assembly 1 during slot insertion and cannot be slotted in any further, so 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. In addition, the hole 60f on the left side of the tray frame 60 is provided with an inclined part 6 (01) for guiding the detection lever, which is inclined so that the front side is lower and the slot-in direction is higher. 250 is inserted into the slot by mistake and ejected due to abnormality detection, when popping up as described later, the C cassette end loading detection lever 251 is smoothly accommodated in the C cassette adapter 250 by the inclined portion 60fl, and removed. In addition, on the left and right rear sides of the tray frame 60, there are through holes 60 that pass through from the inside to the outside and allow transmitted light to detect the end of the tape.
g, 60h are provided. This is the lower half 76 in height.
A, 80a, and has been designed so as 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 tray assembly 59 finishes moving in the slot-in horizontal direction, 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, 78 with the guide rollers 4 have a predetermined angle, so that the tray assembly 59 can be pulled in and held if the position is shifted within a predetermined range. Tray rail position regulating portions 77.81 are provided at the rear of the tray rails 76, 80, respectively, and when the tray assembly 59 shifts to vertical movement after completion of slot-in horizontal movement, the rear side chassis tray regulating portions 12, which will be described later, are provided. .28 is engaged. The tray assembly 59 is basically held by the click levers 74 and 78, but it may separate if an unexpected external force is applied, but this allows the amount of separation to be regulated, and after the external force is released. can be held in a bow as mentioned above. Note that the rear part of the side chassis tray regulating part 12.28 has a bending part for guiding purposes, so when the tray assembly 59 shifts to vertical movement after completing the slot-in horizontal movement, the amount of horizontal movement will 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,
Shaft gear 18° 34 for transfer switching, which will be described later, and rack gear parts 76b and 80 at the rear upper part of the tray rail 7680
b can mesh with each other without causing a phase shift, and stable operation can be obtained. Further, the tray rail position regulating portion 77.81 is located at the side chassis 10.2 when the tray assembly 59 is in the slotted out state as shown in FIG.
13 in front of the side chassis tray position regulation part provided in 6
It rides on the upper end surfaces 13a and 29a of 29. As a result, the tray assembly 59 is biased in one direction with respect to the clearance between the tray assembly 60c and 60d, the guide roller 4, and the door lock lever 8687, thereby reducing vertical play when the tray assembly 59 is in the slotted out state. The quality of the product is enhanced. Regarding left and right play, in addition to the guide by the tray lifter 2, the inside of each side chassis tray regulation face front 13.29 and the side chassis 10
．． A pair of aperture parts 1 provided inside the rear of each of 26
By accurately guiding the left and right sides of the tray assembly 59 using 0a and 26a, smooth movement of the tray assembly 59 is ensured (13th
(see figure). Furthermore, in the slot-out state, the elasticity of a later-described tray horizontal lever 89 is used to bias the left-right play of the tray assembly 59 in one direction, thereby reducing the left-right play and improving the quality of the product. That is, before the tray rails 76 and 80 engage the rack gear portions 76b and 80b with the shaft gears 18 and 34, the pair of guide rollers 4 on the front side are shifted upwardly into the grooves 60c.
, 60d, and the rear side of the tray assembly 59 is once pushed up (see FIG. 14(a)). As a result, the tray rails 76, 80 have their rack gear portions 76b.

The flat portion at the rear of the shaft gear 80b regulates the flat portions 18a, 34a of the shaft gears 18, 34 meshing with the rack gear portions 14f, 30f of the rack slider 14°30, thereby correcting the posture of the shaft gears 18, 34. (Figure 15(a)
)(b)(c)).

After that, shift gear 1g, 34 is moved to tray rail 76.
．． 80 rack gear parts 76b, 80b,
As will be described later, the rack slider 14.30 is operated (see FIG. 15(d)) and the tray assembly 59 is lowered. Further, in the lockout state shown in FIG. 14(b), the lower rack gear portion 60 of the tray frame 60
As shown in FIG. 16, once the tray drive gears 5a60b are moved and guided in the direction of separation substantially parallel to the movement direction and the backlash is absorbed, the left and right tray drive gears 5
By starting to mesh with the small gear parts 52a and 53a of 2.53, the small gear parts 52a and 53a and the rack gear part 60a
, 60bO) This has the effect of preventing gear jump that tends to occur at the beginning of meshing.

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 72a 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 further. 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 screwed and fixed to the tray frame 60 from below. 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 on the back side of the tray plate 61 with a predetermined interval. 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 three pro 5 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 62 and 66, respectively.

In addition, spacer sleeves 69 are fixed to the left and right rear 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 amount of 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 energized outward, the cassette detection boss 6367 is 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 urged 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 mentioned above, the static electricity charged on the cassette tape 200 is transferred from the cassette half to the pop-up slider springs 64 and 68.
It passes through the tray rails 76 and 80, and is grounded along the path from the guide roller 4 to the tray lifter 2, the tray lifter operating section 3, the side chassis 10.26, and the 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. It is stored in 62d66d. This is directly connected to the tray plate 6 when the cassette tape 200 is set.
By first receiving the shock with the pop-up lever 70 instead of with the pop-up lever 70, the impact noise at the time of setting is reduced by its cushioning effect. The pop-up lever 70 has a curved portion 70a formed at its front end, and this curved portion 70a engages with the hop-up slider 62.66.
When the pop-up lever 70 slides backward, 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 energized outward, so that the cedar oiled 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 moved backward If1 relative to the tray assembly 59, driving the pop-up lever 70 and lifting the leading end of the cassette tape 200. Therefore, in the slot-out state, the cassette tape 20
The front side of 0 will be lifted and it will be easy to take out (
(See No. 21). As will be described later, when the pop-up lever 70 is in the slot-out state of the tray assembly 59,
The pop-up sliders 62 and 66 are rotated to
When 2c and 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 out without a cassette tape, the pop-up slider 6266 is urged inward by the pop-up slider springs 64 and 68, so that the bent portions 62c and 66c at the ends of each pop-up control lever 57, the tip of the pop-up lever 70 is slotted out in a normally lowered state, and the cassette tape 200 can be smoothly installed there. If the cassette tape 200 is removed with the front side of the cassette tape 200 being lifted up during 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, each bent portion 62c
.

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, 66 are also returned toward the front along with this, and the next It becomes possible to mount the cassette tape 200.

Further, a cassette detection boss 63.67 is rotatably mounted on the pop-up slider 62.66 at a position spaced apart by a predetermined distance in the front-rear direction. As a result, when installing the cassette tape 200, the cassette tape 200 or the cassette detection boss 63, 67 is pushed outward, but this pushing and pushing becomes a moderate load by dispersing the force, making it smooth. In addition, when the cassette tape 200 is removed from the tray assembly 59, the pop-up lever 70 and the pop-up slider 6266 return to their normal positions due to the spring force of the pop-up slider spring 6468. By shifting the return timing on the left and right sides, the impact noise during return is dispersed and reduced. In addition, since the cassette detection bosses 63 and 67 are arranged so that the position in the front and back direction is evenly spaced by a predetermined interval, the operator can temporarily detect the cassette tape
Even if the ejection of the cassette tape 200 fails, at least one tip of the pair of pop-up levers 70 is maintained in a lifted state, and the front of the cassette tape 200 is maintained in a state where it is easy to take out the cassette tape 200. Removal can be done smoothly.

Note that when no cassette tape is stored in the tray assembly 59, the pop-up sliders 62 and 66
are energized inwardly, and the bent portion 62c at the tip of each
, 66c escaped to the inside of the pop-up control lever 57, but by setting the clearance between the square holes 62b, 566b of the pop-up slider 62, 66 and the large spacer sleeve 69, the tips of each can be easily moved even when there is no cassette tape. The bent portion 62C% 66C 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
0, the tray assembly 59 is pulled into the set by the operation of the pop-up sliders 62, 66 and 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.

In addition, in the explanation of the series of pop-up mechanisms, the explanation has been based on the premise of a pair of left and right mechanisms.

It is also possible to use the mechanism on either the right side.

Also, as previously explained, each pop-up slider 6266 is normally energized inward by the pop-up slider spring 6468. Also, the cassette tape is held between the left and right sides by the cassette detection bosses 63 and 67, and by suppressing the vibration of the cassette tape 200, wow and flutter can be improved.
It is effective in improving set performance, such as improving printer performance and reducing noise.

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 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 dotted chain line in Figure 23). ). The lower surface side of the display member 91 has an escape hole for operating the pop-up lever 70, and the cassette tape 20
It has a shape such as a gap between the bottom surface of 0 and the groove, and is attached to the tray assembly 59 by being slightly press-fitted. 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. When the slot is out due to the selective pop-up mechanism described above, the pop-up lever 70 opens upward, which has the effect of ensuring reliable handling for the purchaser (including the operator).

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 fixed 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. blocked. 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 cassette tape 200 together with the lid 201. It will be released. 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 of the cassette stopper 82, through which the tape running component 350 of the tape drive unit can be seen diagonally from above when opened by slotting down (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 tray assembly 59 and moves it 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
5, and a drive transmission section that transmits this driving force to the side chassis assemblies 9 and 25 in synchronization.

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 rear, and as described above, the guide rollers 4 are rotatably supported at four locations on the front and back.
Q 76 engages with a86a to regulate the horizontal position of the tray lifter assembly 1, guide the movement in the front and rear directions, and hold it in the vertical direction. On the outside of the lifter 2, lifter operating bins 3 are provided at four locations on the left, right, front, and rear, and the lifter operating bins 3 pass through a total of four guide holes in the side chassis 10.26, which will be described later, to the left side of the rack slider. and right 14.30, a total of 4 lifts 14a, 14b, 3
0a and 30b. Side chassis 10.2
6, a total of 4 guide holes 10b, 10c, 26b, 26
c guides the lifter operation bin 3 up and down. Each of the four lift grooves of the rack slider 14.30 has an inclined groove in the center that allows the lifter operating unit 3 to move up and down. Connected to the rear is a groove that holds it in the down position. As a result, the rack slider 14.30 is in the up position when the tray lifter assembly 1 is in the rear position while the position of the tray lifter assembly 1 is restricted in the front-rear direction.
In the near position, the rack slider 14.30 is moved to the down position. In addition, the guide holes 10'b10c 26-b, 2 of the side chassis 10.26 are located in 4 locations, 2 pairs in the front and rear.
One pair of 6c has a smaller clearance with the lid operating bin 3, and the other pair has a larger 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 is provided with two large holes 2a2b on the left and right sides. These holes 2a and 2b are for monitoring the torque cassette during set adjustment, and various inspections can be carried out with the cassette loading device installed in the VTR. In addition, lifter 2
Hole 2a on the left and right side of.

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 unclosed state. The hold roller 6 is arranged at a predetermined interval in the front and back direction near the center with respect to two places near the left and right ends, and serves as a three-point surface press on the flat surface of the cassette tape 200. . 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 □ switch 8 is operated by the leaf spring 5 as shown in FIG. 5
is turned off by bending in a predetermined upward direction (see figure (b)).The plate spring 5 is also used to operate the cassette detection switch 8, resulting in a very simple structure.2
The cassette detection switches 8 are connected in parallel to the control section 300 as shown in FIG.
9 is inserted into the slot, the controller determines that there is a cassette tape only when both of the two cassette detection switches 8 are OFF, and drives the tray assembly 59 to the slot-in position as 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 tray assembly 59 is housed in the horizontal movement end position or the vertical movement start position of the tray assembly 59. Since the tray assembly 59 is slotted in for the purpose of storing it in the cabinet 210 even without the cassette tape 200, if the cassette tape 200 is not stored, the five tray assemblies will stop at the third stop position instead of the slot down position.・By putting the machine on standby, the time from the eject signal to the slot out end is shortened, improving operability. Since the two cassette detection switches 8 are arranged on the left and right sides of the tray lifter assembly 1, the cassette tape 200 can be 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 operations are then possible. In this case, when the cassette tape 200 is not stored, it will go to the slot down position, but when both the photosensors 2347 for tape end detection, which will be described later, are turned on, the control unit 300 detects an abnormality and ejects the tray assembly 59.

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. Side chassis assemblies 9 and 25 are 37 after the reinforcement plate and 85 before the reinforcement plate.
, are connected and held by the lower front reinforcing plate 55, etc., and have a concave 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 are provided with horizontal movement guides 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 shear 26. Vertical horizontal movement guide F714c, 14d, 30c
, 30d, there are lift grooves 14a, 14 for moving the tray lifter assembly 1 up and down as described above.
b 30a30b are provided at the front and rear, and the lifter part 2
lifter operating bin 3 is engaged. The rear lower portions of the lift grooves 14a, 14b, 30a, and 30b, which are engaged with the lifter operating portion 3 at the slot down position, are formed so that they are slightly lifted once the lifter operating bin 3 is lowered to the lowest point. There is.

This is caused by the reaction of the drive belt 44, unexpected external force, etc., causing the rack slider 14 and O to return to the lifter operating 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 inclined groove. It is necessary to lower the bin 3 to the lowest point again, and this load prevents the engagement position of the lifter operating 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 lower front 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 rack gear portions 14f and 30f that are connected to shift gears 18 and 30, respectively.
34 and can be operated in the horizontal direction or to rotate the shift gears 18, 34, and the rear flat portions 14g, 30g are engaged with the shift gears 18, 34 before the rack gears 14f, 30f engage with the shift gears 18, 34. The attitude of the shift gear 18.34 is corrected by contacting the flat portions 18a, 34a of 34. Thereafter, the shift gear 18.34 meshes 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.
It is regulated in the upward direction and guided in horizontal movement. 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 precision.

At the rear of the rack sliders 14 and 30, as shown in FIG. 29, through holes 14h and 30h are provided 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 moves horizontally 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. This allows the output timing of the photosensors 23 and 47 to have a time difference as shown in FIG.
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, respectively, in the front and back direction, 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, 30i, 30 i. As shown in FIG.
2b.

45b are inserted with clearance so that they overlap when viewed from above the set. Convex portion 22 of sensor holder 2245
b, 45b are provided with through holes 22a45a through which transmitted light for tape end detection passes, and photo sensors 2347, which are light receiving elements for tape end detection, are held on the left and right outer sides of the through holes 22a45a. As a result, for example, the external light through hole 22a can be
45a and reaches the photosensor 23.47 to ensure operation of the control unit.

Further, a sensor shutter 19 is rotatably mounted 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 photo sensor 23 through the transmission hole 10f, and is normally biased by the shutter spring 20 in the direction of transmission. . At a position slightly before the tray assembly 59 is slotted in and ends its horizontal movement, and at a position housed in the front cabinet, the sensor shutter 19 is moved to the upper left rear end of the tray frame 60 of the tray assembly 59 at the timing shown in FIG. The shape 16j is operated and rotated to shield, and the transmitted light passing through the through hole 14h of the rack slider 14 is blocked or controlled to set a monitoring section, and the third stop position is set to a desired position. Set to . 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. This makes it possible to save power.

Here, the output of the photosensor 23.47 is output by the control unit 300.
(see Figure 11). The control unit 300 counts the time from the start of slot-in until reaching the third stop position, and when a predetermined time has passed, an abnormality detection logic determines that the operation is abnormal and reverses the drive motor 35. It has been incorporated. 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 a hand or finger is inserted into the slot 1c, it will take a considerable amount of time for the drive motor 35 to release the reversal after the hand or finger is inserted into the sensor shutter 19.
Due to the effect of Safety 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 shielding and transmitting operations of the sensor shutter 19 are performed at the timing shown in FIG. 33 until the tray assembly 59 is stored in the front cabinet. By providing a monitoring section that repeats 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 significantly shortened, the drive motor 35 can be reversed almost instantaneously in a state where a hand or finger is caught, and further, 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 perform divided detection using 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 rear portion of the right 26 so as to be rotatable through a predetermined angle. Each of the shift gears 18,34 is biased in one direction by a shift gear spring 1733.

The shift gears 18 and 34 are connected to the tray rail 7 as described above.
6.80 rear upper rack gear part 76b80b and rear upper rack gear part 1 of rack sliders 14 and 30
It can be engaged with 4f and 30f, and the tray rail 76
．． Ill work to the rear of 80 with rack sliders 14 and 3
0 in the front direction, and the rear movement of the rack slider 1430 causes the tray rails 76 and 80 to move in the front direction, and the tray rail 7580 and rack slider]4゜3
0 operation is switched.

Drive gears 16 and 32 are supported on the outside of each of the lower front surfaces of the side chassis 1026.The drive gears 16 and 32 are respectively supported by rack gears on the lower front side of the rack sliders 14 and 30. Part 14
an inner gear part 1 that meshes with e and 30e to operate them;
6a, 32a, and a tray drive gear 52.5, which will be described later.
The outer gear portions 16b and 32b are driven by meshing with the outer gears 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 5253 is
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 gear parts 16b and 32b on the outside of the drive gears 16 and 32 are connected to the rack slider 14.3.
It also serves to prevent the rack slider 14.0 from floating, and a relief taber is provided so as not to interfere with the rack slider 14.30 during rotation.

As described above, a pair of constricted portions 10a are provided at the inner rear of each of the side chassis 10.26.

26a is provided to accurately guide the left and right sides of the tray assembly 59. In addition, as described above, a pair of side chassis tray regulating portions 12° 28 are provided at the rear inside of each of the side chassis 10.26 to ensure the position regulation of the tray lifter assembly 1 in the longitudinal direction. and the rack gear section 76 at the rear upper part of the tray rail 7680.
b, 80b and the shift gears 18, 34 achieve highly accurate gear meshing. Also side chassis 10.26
As described above, a pair of side chassis tray regulating portion surfaces 13.29 are provided on the inner front side of each of the tray rail position regulating portions 77.29 in the slotted-out state.
81 to accurately guide the tray assembly 59 from side to side, and to reduce vertical wobbling of the tray assembly 59 in the slotted-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 toward the front until the end of the movement toward the front, and from the start of vertical movement of the tray assembly 59 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 being unplugged 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 easily tailored to each case.

A sensor holder 22 is fixed to the left outer side of the side chassis 10. Rack slider 14 of sensor holder 22
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 the middle mu board 23a. The surface of the relay board 23a is painted black, and depending on the set, external light incident from the air vent hole on the left side of the cabinet may be transmitted through and cause the photosensor 23 to malfunction. ing. 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 provided on the right outer side of the belt 44 to prevent the belt 44 from coming into contact with the set's wiring materials, etc.

A tray drive assembly 39 that reduces and transmits the driving force of the drive motor 35 is provided on the right outer side of the side chassis assembly 25. The tray drive assembly 39 includes a tray drive base 40, a reduction gear 41, a pulley gear 42, and a relay 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 relay gear 43 on its right outer side. The driving force transmitted to the pulley gear 42 by the belt 44 undergoes first-stage deceleration by the pulley gear 42 and is transmitted to the reduction gear 41. A second stage of deceleration is performed by the reduction gear 41 and transmitted to the relay gear 43. Relay gear 43 transmits the signal to connector gear 50, which will be described later. In addition, tray drive base 4
0 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 toward 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 and connected to the electrical circuit. As a result, the photosensor 47 is reliably prevented from entering external light, similar to 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 is a positioning portion 1 provided above the side chassis 10.26 with four or more positioning holes 37b provided on the left and right front and rear.
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 special assembly jigs 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. Further, a hole 37a is provided at the rear of the reinforcing plate 37 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 screwed and fixed to the lower side of the rear reinforcing plate 37, and functions to open the lid 201 of the cassette tape 200 and the cassette stopper 82 during 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 engages with a positioning portion 10e26e provided on the side chassis 10.26, and is screwed and fixed to the side chassis 10.26 so as to maintain a highly accurate width alignment. 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 pressure 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 the surface positions of 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.

The door lock levers 86, 87 are actuated by an operating boss 86a.

87a10 Tsuku claw parts 86b, 87b and operation boss 86c
It has 87c. And door lock lever 868
7 are grooves 60d and 60c in the upper part of the tray frame 60.
as shown in Fig. 37, and
06.60c, the cassette door 21 opens and closes the cassette tape storage opening of the cabinet 210.
1 locking member 212 (38th locking member 212)
(See Figure 39). The cassette door 211 is rotatably supported by the cabinet 210 and has a biasing spring 21.
3, it is energized in the closing direction. That is, the door lock levers 86 and 87 are respectively door lock levers.
The locking member 212 of the cassette door 211 is biased and held in the locking direction by the spring 88. Then, when the tray assembly 59 starts the slot-out operation from the slot-in state, the cassette door 211 is pushed by the tray assembly 59 and opens against the spring force of the biasing spring 8 (FIG. 38(b)). reference). At this time, the door lock levers right and left 86.87 have their operation bosses 86c,
87c is still the groove 606 on the left and right top of the tray frame 60.
, 60c, so the door lock levers 86, 8
The lock claw portions 86b and 87b of No. 7 are disengaged from the lock member 212 of the cassette door 211 and released. The locking member 212 of the cassette door 211 is provided with a tapered shape at the tip of the locking member 212 to push away the locking claws 86bb and 87b of the door lock levers 86 and 87. Lock member 212 of 211 and lock claw parts 86bb, 87b of door lock lever right and left 8687
This arrangement is designed to ensure that the cassette door 211 can be closed completely even if the cassette door 211 may interfere. Furthermore, when the tray assembly 59 is slotted in from this slot-out state, the operating posts 86c and 87c of the door lock levers 86 and 87 come off 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 inside, there is a risk that the user may accidentally perform the slot-out operation with his or her hand inside the set, causing an accident in which the user's hand may be caught and injured. Since the cassette door 211 is closed and locked when the tray assembly 59 is stored in the cabinet 2]0, the operator will not be injured as described above.

When the tray assembly 59 is slotted out toward the front, first push the operation boss 86a of the door lock levers 86, 87.
, 87a are engaged with grooves on the upper left and right sides of the tray frame 60, and the door lock levers 86, 87 are operated.
After the lock claw portions 86b and 87b are released from the locking member of the cassette door, the cassette door 211 is opened by being pushed by the five tray assemblies.

A second oven/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 (not shown)
It is determined by the preload.

In this state, the second open/close switch 100
is in the OFF state with a predetermined clearance, and when the cassette door 211 is further closed against the elastic force of an elastic member (not shown), the second oven/close switch 100 is turned ON. It has become. Note that the elastic member (not shown) that is the limiter of the cassette door 211 can also be used as the second oven/close switch 100 itself. Also, cassette door 2
When the cassette door 211 is closed, it can be slotted out by pressing the separately provided oven/close switch 101, but it can also be slotted out by pressing the main body of the cassette door 211.

The output ends of the second oven/close switch 100 and the oven/close switch 101 are connected to the control unit 300, and the cassette door 211 is opened and closed via the control unit 300 in response to the ON-OFF state. do.

The reinforcing plate lower surface assembly 54 is composed of a lower front reinforcing plate 55, two left and right pop-up control lever holding plates 56, two right and left 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 the side chassis left 10 and the side chassis right 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 sides of the pop-up control lever 5 with 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 a connect spring 49 and a connect gear 50.
, a tray drive shaft 51, and tray drive gears left and right 52 and 53. The tray drive shaft 51 is provided to pass 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 525
As shown in FIG. 40, small gear parts 52a and 53a mesh with and operate rack gear parts 60a and 60b provided at the left and right lower parts of the tray frame 60 inside the left and right side chassis 10.26, respectively. , 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 portions 14e 30 provided on the lower front sides of the left and right rack sliders 14.30, respectively.
It is composed of large gear parts 52b and 53b that mesh with and operate the gears (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 pivotally supported by a hexagonal extruded tray drive shaft 51 as shown in FIG. 42, and its small gear portion 52a53a is set to have a number of teeth that is a multiple of six. This makes it possible to incorporate the left and right tray drive gears 5253 into a container without worrying about the left and right gear phases. Further, the ratio of the number of gear teeth of the small gear parts 52a, 53a and the large gear parts 52b, 53b is the ratio of the number of gear teeth of the inner gear parts 16a, 32a and the outer gear parts 16b, 32b of the left and right drive gears 1632. It is composed of the same number of teeth (12 teeth: 24 teeth, for example), and a mark X that matches the phase is provided for every two teeth (see FIG. 41), and these marks are assembled so that they 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 parts 16a, 32a and the outer gear parts 16b, 32b of the left and right drive gears 16.32. 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 5253 are the drive gear left and right 16.32.
The inner gear part 16a.

The left and right shaft gears 1g and -34 are formed to have the same number of teeth as 32a, and the inner gear part meshing with rack gear parts 76b and 80b at the rear upper part of the left and right tray rails 76.80, respectively, and the left rack slider. 14 and rack gear parts 14f and 3 on the rear upper side of the 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 32a do not necessarily have to have the same number of teeth or the same module. In this case, the small gear portions 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, drive gear left and right 16. ．． The small gear parts 52a, 53a of the tray drive gear left and right 52.
When the pitch circle diameter is increased, the reduction ratio of the horizontal movement of the tray assembly 59 driven by the left and right tray drive gears 52 and 53 is increased, and the force when a finger or hand is caught is weakened. As mentioned above, since the operating load for horizontal movement is smaller than the operating load 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 applied when the fingers or hands are pinched is weakened, 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 the tray drive gears right and left 53.52, the tray drive shaft 51
By transmitting the driving force to the left and right side chassis sections, the effects of backlash from the gears in the intermediate path are eliminated, allowing for 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 are held in place by sandwiching them. 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 trying to start slot-in from the slot-out state, push the five tray assemblies backwards (Figure 43).
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 bending of the connect spring 49. When the operating portion of the tray assembly 59 comes off the tray detection lever 89, the tray detection switch 90 is switched from ON to OFF, and the drive motor 35 is rotated by the circuit to start slot insertion.

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. Accordingly, 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 525
3 is disconnected 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 for inserting the slot into the slot is equal to the force required 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 connect spring 49 bends and escapes, as in the case where the above-mentioned click mechanism is used. 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, 53, the force of the connect spring 49 can be further reduced, and the pressing operation force can be further reduced. The operation can be controlled.

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.As shown in FIG.
This rotation boss 92c is provided coaxially with the rotation center axis of
passes through an elongated guide portion 26f 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 this rotary boss 92c inside the side chassis right 26. The rotary plate 110 has a relief part 110a and a locking part 110b. The locking portion 1 of the rotary plate 110 is attached to the right side 26 of the side palm.
10b is provided, and when the right drive gear 32 rotates in the slot-out direction, a slight rotational load between the rotation boss 92c and the elongated hole 26f and the rotational direction of the right drive gear 32 are provided. As a result, the damper 92 is biased toward the front side, and the pressure retaining shape 26g of the right side palm 26 engages with the locking portion 110a of the rotary plate 110, thereby controlling the rotation of the damper body 92b! This causes the damper function to work (see Figure 46(b)). When the drive gear right 32 rotates in the slot-in direction,
Due to the direction of rotation of the right drive gear 32, a slight rotational load between the rotation boss 92c and the elongated hole 26f, and the relief face shape of the rotation plate 110, the damper 92 is biased rearward, and the rotation plate 1
The locking portion 110b of 10 escapes from the locking shape 26g of the right side palm 26, and the damper main body 92b connects to the gear portion 92a.
The lever function does not work because it rotates with the 46th
(see figure (a)). The rotation direction of the tribe gear right 32,
Side chassis right 26 long hole 26f and rotation boss 92c
and the slight rotational load of the elongated hole 26f, and the side chassis right 2
The locking shape 26g of No. 6 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 the stopped state where no cassette tape is stored, the tray assembly 59 is stopped at the third stop position.

To slot out the tray assembly 9 from this state, press the oven/close switch 101 or the cassette door 211. Then, the second oven/close switch 100 operated by the oven/close switch 10a or the cassette door 211 is turned on. The oven/close switch 101 and the second oven/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 the tray assembly 5
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 has an output end connected to 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 lower than the first voltage (set) in a power supply circuit set for safety measures to be described later.

The reason why the rotation is continued for a further 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 prepare the insertion operation of the tray assembly 59 for the next slot-in operation by applying a predetermined amount of relative rotation to the tray assembly 59 . 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 tray assembly 59 is 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 measure 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 midway through, the drive motor terminals are in an oven until then, so the drive is less likely to occur than a short circuit between the terminals. In the oven between the motor terminals, it can be pushed in with a relatively light pressing force. Further, 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 oven/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. When the tray assembly 59 is pushed, the left tray drive gear 52 and the right tray drive gear 53, which are operated by the rack gear parts 60a and 60b on the lower left and right sides of the tray assembly 59, are connected to each other 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 turned from ON to OFF.
The controller detects this and rotates the drive motor 35 at the second voltage via the drive circuit 301 and power supply circuit 302 to insert the drive motor 35 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 rack slider left 14 or sensor shutter 19 and rack slider right 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 before the start of the vertical movement of 9.

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, the rack sliders left and right 14.30 are engaged with the left and right drive gears 1632, and It is operated in front. This operational switching from the tray rails left and right 7680 to the drive gears left and right 16.32 is performed as described above, where the tray assembly 59 is accommodated and held in the tray lifter assembly 1. When the left and right rack sliders 430 are moved to the front, the lifters 3 provided on the left and right rack sliders 14 and 30 guide the lifter operating section 3 engaged therewith, and the tray lifter is moved. Assembly 1 is lowered,
Tray lifter assembly] 1! The tray assembly 59 that has been moved lowers 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 rack slider right 30 operates the tray detection lever 89 at the end position of the movement in the front direction, and then the tray detection switch 90 is activated.
Switch from OFF to ON. The control unit 300 switches the tray detection switch 90 from OFF to ON when the switch 24 is ON.
When the switch is detected, the drive motor 35 is stopped, and the slot-in operation is completed.

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, thereby maintaining the operator's safety. .

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, when the cassette tape 200 is not present, the operating load is smaller and the operation is faster than when the cassette tape is present, but until the cassette detection switch 8 reaches the switching position 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 slotting in 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 the drive gear left 16 and drive gear right 32 to the tray rail left 76 and tray rail right 80 in the reverse order of the slot-in case, and the tray assembly 59 is operated in a substantially reverse order to the slot-in operation. 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 way, the cassette loading device is connected to the connect gear 50 that transmits driving force to the right tray drive gear 53 of the pair of left and right tray drive gears 52 and 53 that horizontally transfer and drive the tray assembly 59. The connect spring 49 is interposed so that the spring force acts only at the cassette tape attachment/detachment position of the tray assembly 59, and when the tray assembly 59 is pressed against the spring force of the four connect springs, the tray detection switch 90 is activated. The configuration is such that the slot is turned on and the drive motor 35 is drive-controlled via the control unit 300 to perform slot-in. According to this, the slot-in operation of the tray assembly 59 can be performed with a relatively weak operating force of simply pressing the tray assembly 59 against the spring force of the connect spring 49. As a result, easy handling is achieved. When the tray assembly 59 slots out from the cassette loading position, the driving force from the drive motor 35 is directly transmitted to the tray drive gear right 53 via the connect gear 50, and the slot out operation of the tray assembly 59 is performed. By doing so, highly accurate transfer control of the tray assembly 59 can be realized.

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 embodiments described above, 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 highly accurate tray transfer control with simple handling operations.

[Brief explanation of the drawing]

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, 1834... Shift gear, 19... Sensor shutter, 21... Sensor shutter shaft screw, 23.47
...Photo sensor, 23a, 46...Relay board, 2
4...Switch, 28.29...Side chassis tray regulating section rear and front, 35...Drive motor, 36.
... Drive pulley, 37... After reinforcing plate, 38... Cassette lid opener, 39... Tray drive assembly, 40
-=) Raid drive base, 41... Reduction gear, 4
5... Sensor holder, 50... Connect gear, 51
... Tray drive shaft, 5253 ... Tray drive gear, 54 ... Reinforcement plate front assembly, 55 ... Reinforcement plate front lower part, 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, 63.
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, 8
2...Cassette stopper, 84...Reinforcement plate front assembly, 8
5... In front of the reinforcement plate, 8687... Door lock lever 8
9... Tray detection lever 90... Tray detection switch, 91... Display member, 92... Damper 100.
...Second oven/close switch, 101...
Open/close switch, 110...Rotary plate, 20
0...cassette tape, 210...cabinet,
250...C cassette adapter 300...Control unit, 301...Drive circuit, 302...Power outlet path, 4
00...Light source.

Claims (1)

[Scope of Claims] A tray into 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 to a recording medium drive section in the cabinet via the tray. The cassette loading device is driven by a drive source and transports the tray to a first position protruding from the front surface of the cabinet where the cassette is installed and removed, and a second position where the cassette is loaded into the recording medium drive section. a tray transporting means having a spring member engaged between the drive source and the tray so that a spring force acts only when the tray is transported toward a slot-out position where the cassette is attached or removed; The tray is operated in conjunction with a pressing operation in the slot-in direction at the first position of the tray, and is operated by controlling the drive source, and has an operation amount corresponding to a deflection amount of a spring member of the tray transfer means. A cassette loading device comprising: a detection means; and a control means that is interlocked with the operation of the tray detection means and controls the drive source to drive and control the tray transfer means to control the transfer of the tray. .