JPH03286461A - Cassette loading device - Google Patents

Abstract

PURPOSE:To realize safe and sure handling operation by providing a light guiding means which transmits light from a light source while keeping time difference between a first and a second light receiving elements, and a detecting means which detects a position at which one of the first and the second light receiving elements receives the light as a third position. CONSTITUTION:Through holes 14h, 30h for passing transmitted light for detecting a tape end are provided,,and the through hole 30h is set so as to be switched from a transmissive state to a shielded state after a little while elapses after the through hole 14h is turned into the shielded state. This is for the purpose to let the output timings of photosensors 23, 47 have the time difference and detects a third stop position by using the time difference of the outputs of the photosensors 23, 47 for detecting the tape end. Then, by changing the driving voltage of a driving motor for driving tray movement as considering the third stop position a boundary, the promotion of the safety of a user in a tray horizontal transfer state is intended. Thus, the safe and sure handling operation can be realized through simple configuration.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a recording/reproducing device such as a video tape recorder (VTR), and in particular, the present invention relates to a recording/reproducing device such as a video tape recorder (VTR), and in particular, the present invention relates to a recording/reproducing device such as a video tape recorder (VTR). This invention relates to a cassette loading device.

(Prior Art) 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/unloaded. A front loading method and a so-called linear skating method in which a cassette tape is directly attached to and removed from an entire tape drive unit that is transferred to the outside of a cabinet are known.

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

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

As a cassette loading device that satisfies these demands, a tray system has been proposed in which a tray for transporting and holding cassette tapes is installed in and out of the cabinet, 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; it is also necessary to transfer the cassette tape loaded on the tray to the tape drive unit and attach/detach it. , various configurations are required to organically couple the tray and tape drive.

Todoro's structure for organically connecting the tray and tape drive unit is that, unlike the conventional front loading method or linear skating method, the tray on which the cassette tape is loaded can be moved in and out of the cabinet. Because the cassette tapes are stored in the tray and transferred to the tape drive unit for loading, it is difficult to directly use the structure of conventional systems, and it is difficult to ensure reliable operation in each part. In addition to realizing this, with simple handling operations,
A configuration is required to achieve operator (user) safety.

For example, unlike conventional models, the tray for loading and unloading cassette tapes protrudes from the front of the cabinet.
There is a risk that the user's hands or fingers may be transferred by the tray and enter the cabinet and create a hole due to incorrect handling. For this reason, it is necessary to take safety measures to reliably prevent holes caused by erroneous operations by the user.

(Problems to be Solved by the Invention) As described 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 system, so it is difficult for the user to handle it. It is necessary to take certain safety measures.

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 be handled safely and reliably.

[Structure of the Invention] (Means and Effects for Solving the Problems) The present invention provides a tray on which a cassette tape can be attached and detached so as to be freely removable from the front surface of the cabinet, and the cassette tape can be inserted into the cabinet through this tray. A cassette loading device that transfers and loads a cassette tape into a tape drive section, which has a motor, and a first position protruding from the front surface of the cabinet into which the cassette tape is loaded and unloaded, and a cassette tape loaded into the tape drive section. a tray transport means for transporting the cassette tape to a second position, and a light source provided in the cabinet corresponding to the tape drive unit, and is arranged to sandwich the tray transport means for transporting the cassette tape to a second position, and detects the end of the tape on the supply side and take-up side of the cassette tape. 1st
and a second light receiving element, and a third position where the side of the tray protruding from the cabinet is housed in the cabinet from the front surface of the cabinet at an intermediate position between the first and second positions of the tray; and a light guide means for transmitting the light from the light source with a time difference in a second light receiving element, and detecting a position where one of the first and second light receiving elements receives light as the third position. The device is configured to include a detection means for detecting.

According to the above configuration, the detection means detects the third position where the tray is housed in the cabinet based on the time difference between the light received by the first and second light receiving elements for tape end detection;
The tray transfer means changes the driving voltage for tray transfer after the third position; thereby realizing user safety and speeding up tray transfer.

Further, according to this, it is possible to confirm whether or not redo transfer is possible based on the tray transfer time to the third position, thereby realizing safety measures during tray transfer.

The present invention also provides a cassette loading device in which a tray on which a cassette tape is attached/detached is provided so as to be freely removable from the front surface of the cabinet, and the cassette tape is transferred and loaded into a tape drive section in the cabinet via this tray. a tray transporting means having a motor and transporting the tray to a first position protruding from the front surface of the cabinet where the cassette tape is attached/detached and a second position where the cassette tape is loaded into the tape drive section; first and second light-receiving elements arranged sandwiching a light source provided in the cabinet corresponding to the tape drive unit and detecting tape ends on the supply side and take-up side of the cassette tape; and transport of the tray. a shutter member that transmits and blocks the light in conjunction with the shutter member, and a detection means that detects the third position located between the first and second positions by switching the light shielding and transmission by the shutter member. This is what I did.

According to the above configuration, the time difference between the light received by the first and second light receiving elements for detecting the end of the tape is determined via the shutter member, so that the detection means detects the third redolay housed in the cabinet. quickly detect the position and use this third
The tray transfer means changes the driving voltage for tray transfer based on the position of , thereby realizing user safety and speeding up tray transfer.

(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 detached, and FIG. 2 shows the state in which the horizontal movement is completed. ! ! (vertical movement completed state), and FIG. 3 shows the state on the way from the state of FIG. 2 to the tray slot down state in which the cassette tape is loaded into the tape drive unit. That is, the cassette loading device according to the present invention transports the five tray assemblies shown in FIG. 4 into which the cassette tapes 200 are attached and removed in a substantially horizontal manner 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 an elevating mechanism and loaded into the tape drive unit, and the tray assembly 59 is connected to a guide unit that reciprocates the tray assembly 59. It is composed of an operating mechanism that drives reciprocatingly. 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), upper (C direction), and lower (F direction).

First, the tray section will be explained. That is, as shown in FIG. 6, the tray assembly 59 includes a tray frame 601, a tray plate 61, pop-up sliders 62, 66, and a pop-up slider spring 6 as main elements.
4.681, left and right pair of pop-up levers 70, left and right pair of pop-up lever springs 71, cassette lid lock lever 72, release lever spring 73, click lever 74.78, click lever spring 75.
79, tray rail 76.80, cassette stopper 8
2. Consists of a cassette stopper spring 83.

First, the tray plate 61 is attached to the tray frame 60.
Five tray assemblies are formed, each of which is screwed to form a holder for the cassette. An upwardly bent portion 61g 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 that are opened to avoid contact with the tape drive unit in the slot down state. This through hole 61c protrudes from the front surface of the cabinet in the slot-out state and has a large area through which a hand or finger can pass through, and the tray frame 61c protrudes from the front surface of the cabinet.
It is formed all the way to the front side (discharge side) side wall. The shape of the through hole 61c is designed with operator safety in mind, so that even if the operator's hand or fingers are caught, the hole 61c should not be caught between the thin end face of the tray plate 61 but between the wide frame 61 in front of the tray plate 61. This prevents the formation of a diameter hole. This greatly reduces the force per unit area of the through hole 61c, thereby almost eliminating the risk of perforating the hand or fingers.

Note that the shape of the through hole 61c is such that the direction in which the hole becomes smaller from the rear to the front is at an angle of about 45 degrees or less with respect to the front-back movement direction. This is a measure to prevent this because if the angle becomes large, there is a risk that the cabinet 210 will get caught between the thin end face of the diagonal part and the cabinet 210 will form a diameter hole.

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, 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 VH5-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 a pair of guide rollers 4 installed in the front and rear inside of both side plates of the lifter 2 of the tray lifter assembly 1, which will be described later. 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, 80a are tapered vertically to facilitate engagement with the guide roller 4. The upper pair of grooves 600° and 60d engage with door lock levers 86 and 87, which will be described later, to guide horizontal movement and control the operation of the door lock levers 86 and 87. The open ends of the pair of upper grooves 60c and 60d are tapered vertically and inwardly, and the door lock lever 8
6 and 87, and highly reliable operation is achieved.

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 60m is provided 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 five tray assemblies go in and out. . The convex portion 60e has an inclined portion 60n inclined in a direction in which the width gradually decreases from bottom to top and an inclined portion 60p inclined in a direction in which the width gradually decreases from the front to the rear. Although the ease of attaching and detaching the tape 200 is taken into consideration, in order to avoid damaging the cabinet 210 by applying the cassette tape 200 around the opening hole of the cabinet 210 when installing the cassette tape 200, please use a regular tape before hitting the cabinet 210. It has the effect of guiding you to a location. The front, left and right, upper and lower corners of the tray frame 60 are formed into a curved shape with a predetermined radius to ensure safety so that the operator does not make a hole with the edge. As shown in FIG. 8, a curved portion 60k having substantially the same shape as the radius of the corner of one end (rear end) of the cassette tape 200 is formed at a corner of the inner circumferential wall on the front side of the tray frame 60. As shown in FIG. This is one way to prevent the cassette tape 200 from being inserted backwards and forwards, and when the cassette tape 200 is inserted forwards and backwards, the outer shape without the radius is opposite to the curved part 60k of the tray frame 60. Therefore, it cannot be inserted. Although various other measures have been taken to prevent the cassette tape 200 from being inserted backwards and forwards in reverse, this method makes it even more reliable.

A hole 60f penetrating from the inside to the outside is provided on the left side of the front surface of the tray frame 60. As shown in FIG. 9, this hole 60f is connected to the C cassette unopened detection lever 2 of the C cassette adapter 250 for the well-known VHS-C cassette.
51, and is height-wise aligned with the groove 60c on the lower left side so as not to spoil the appearance. If C
C cassette adapter 250 with no cassette opening
When the C cassette is inserted into the slot, the C cassette unopened detection lever 251 is inserted into the groove 6 on the lower left side as shown in FIG.
0c and protrudes into the groove 76a of the tray rail 76, it is stopped by the guide roller 4 of the tray lifter assembly 1 during slot insertion and cannot be slotted in any further, causing an abnormality in the control unit 300 (see FIG. 11), which will be described later. Detection works and it is discharged. Therefore, C cassette adapter 25
0 or parts of the VTR body. Further, the hole 60f on the left side of the tray frame 60 is provided with an inclined portion 60fI for guiding the detection lever, which is inclined so that the front side is lower and the slot-in direction is higher. It was inserted into the slot by mistake and ejected when an abnormality was detected.
When popping up, which will be described later, the inclined part 60.11
1, the C cassette unopened detection lever 251 is smoothly housed in the C cassette adapter 250,
It becomes possible to take it out. Further, on the left and right rear sides of the tray frame 60, there are through holes 60g and 60h, which pass through from the inside to the outside and allow transmitted light to detect the end of the tape.
will be provided. These are the lower grooves 76a and 80a in terms of height.
Care has been taken not to damage 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 of each of Qa and 60b so that Qa 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 tray assembly is engaged with guide rollers 4 to maintain the five positions of the tray assembly relative to the tray lifter assembly 1. The retaining portions of the click levers 74 and 78 with the guide rollers 4 have a predetermined angle, so that the tray assembly 59 can be pulled in and held if the positional deviation is within a predetermined range. At the rear of the tray rails 76 and 80, tray rail position regulating parts 77 and 81 are respectively provided, and when the tray assembly 59 shifts to vertical movement after completing the slot-in horizontal movement, the side chassis tray regulating parts rear 1 described later are provided. .2.28. The tray assembly 59 is basically held by the click levers 74 and 78, or 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 retracted and held as described 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 positions of the five tray assemblies can be maintained with high precision at all times when the slot is down, and especially when the slot is out, the shaft gear 18. part 76b,
80b can be meshed 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 when the five tray assemblies are in the slotted out state as shown in FIG.
．． The side chassis tray position regulating section front 13.29 provided on the side chassis tray position regulating section 26 rides on the upper end surfaces 13a, 29a. ′
As a result, the five tray assemblies have their grooves 60c and 60d.
The tray assembly 5 is energized in one direction with respect to the clearance between the
The quality of the product is improved by reducing the vertical play in the slot-out state of 9. Regarding left and right play,
In addition to the guide provided by the tray lifter 2, a pair of constricted portions 10a and 26a provided inside the front 13.29 of the side chassis tray regulating portion and inside the rear of the side chassis 10.26 allows for accurate tray assembly. By guiding the left and right sides of 59, smooth movement is ensured (see FIG. 13). Furthermore, in the slot-out state, the elasticity of a tray detection lever 89, which will be described later, is used to bias the left and right play of the tray assembly 59 in one direction, thereby reducing the left and right play and improving the quality of the product. That is, the tray rail 76.80 has its rack gear portion 76b.
, 80b before meshing with the shaft gears 18, 34,
The pair of guide rollers 4 on the front side are guided by the upwardly shifted grooves 60c and 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 18a of the shaft gear 18, 34 has a rear flat portion 80b meshing with the rack gear portions 14f, 30f of the rack slider 14°30.

34a to correct the posture of the shaft gears 18, 34 (see FIGS. 15(a), (b), and (c)). After that, the shift gears 18, 34 are moved to the tray rail 76.80.
rack gear part 76b.

80b, and the rack slider 14.30 is operated as described below (see FIG. 15(d)).
Tray assembly 59 is lowered. Further, at the time of lockout shown in FIG. 14(b), the rack gear parts 60a and 60b on the lower side of the tray frame 60 are once moved in a direction substantially parallel to the moving direction, as shown in FIG. After the backlash is absorbed, the small gear portions 52a of the left and right tray drive gears 52,53
By starting to mesh with 53a, the small gear parts 52a, 5
3a and the rack gear part 60a.

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

A cassette lid lock release lever 72 is provided inside the frame on the right rear side of the tray assembly 59 so as to be pivotally supported by a tray frame 60 and a tray plate 61. The cassette lid lock release lever 72 has a lid lock release portion 72a1 and a boss portion 72b, is provided so as to be rotatable left and right, and is biased toward the inside of the five tray assemblies 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, left and right directions, the cassette tape 200 can be smoothly attached and detached. Since the cassette lid and lock release lever 72 are provided on the tray assembly 59, there is no special operation required to unlock the lid, resulting in a very simple structure. Further, the cassette lid lock release lever 72 has a lid lock release portion 72a that is connected to the tray frame 6.
0, the boss portion 72b is pushed outward to the space between the inner surface of the tray frame 60 and 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. In other words, if the cassette tape is inserted upside down, the image shown in FIG. 18(a)
As shown in FIG. 3, the cassette lid lock release lever 72 is pressed by the cassette half side surface to be biased to a level approximately equal to the inner surface of the tray frame 60, and the cassette lid lock release lever 72 is pressed against the boss portion provided on the cassette lid lock release lever 72. Since the boss portion 72b protrudes into the groove portion 60d on the lower right side of the tray frame 60, the boss portion 72b is stopped by the guide roller 4 of the tray lifter 2 while being slotted in, and cannot be slotted in any further. Then, the controller 300
(See FIG. 11) is detected, the abnormality detection is activated, and the five tray assemblies are ejected. Of course, in the normal insertion state, the lid lock release portion 72g of the cassette lid lock release lever 72 engages with the lid lock release portion of the cassette tape, so that the boss portion 72b is not biased to rotate.
is located inside the bottom of the groove 60d on the lower right side of the tray frame 60, allowing the subsequent transfer operation (see FIG. 18).
a)).

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 sleeve 65 engages with elongated holes 62a and 66a provided in the hop-up sliders 62 and 66, respectively, and the pop-up slider 62
．． 66 is regulated in the horizontal and vertical directions and is held so as to be slidable back and forth. Spacer sleeves 65 are screwed and fixed to the inside of the front left and right sides of the tray plate 61, respectively.
The up and down directions of the inner ends of the pump up sliders 62 and 66 are regulated.

Further, spacer sleeves 69 are fixed to the left and right rear of the tray plate 61 with screws.
One 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, 66 can be rotated left and right around the spacer sleeve 65 on the front side of the tray plate 61 depending on the clearance between the pop sliders 2a, 66a and the spacer sleeve 69. Potupua Tsubusu Slider 62.6
Cassette detection bosses 63 and 67 are respectively implanted in the tray plate 61 so as to pass through the escape holes. When the cassette detection bosses 63 and 67 are energized outward, they are stored in storage locations provided on the left and right sides of the tray frame 60.

Each pop-up slider 62,66 is normally inwardly biased by a pop-up slider spring 64,68. When the cassette tape 200 is set on the tray assembly 59, the left and right sides of the cassette half of the cassette tape are 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 electrically 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 goes down by a pop-up lever spring 71, and the pop-up lever storage hole of the pop-up slider 62, 66 is inserted so that its tip is slightly above the top surface of the tray plate 61. 62d.

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

The pop-up sliders 62 and 66 are provided with bent portions 62c and 66c at their respective rear ends, and if 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 to the outside, so the core target 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 and 66 are slid rearward relative to the five tray assemblies, and the pop-up lever 70
to lift the leading end of the cassette tape 200.

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

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

66c escapes to the inside of the pop-up control lever 57, the pop-up lever 70 is returned to its normal position by the pop-up lever spring 71, and the pop-up sliders 62 and 66 are accordingly returned to the front direction, 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 shifted by a predetermined distance in the front-rear direction. As a result, when the cassette tape 200 is installed, the cassette tape 200 pushes the cassette detection bosses 63 and 67 outward, but this pushing and pushing becomes a moderate load by dispersing the force, so it is smooth. In addition, when the cassette tape 200 is removed from the tray assembly 59, the pop-up lever 70 and the pop-up sliders 62-66 are returned to their normal positions by the spring force of the pop-up slider springs 64-68. However, by shifting the return timing between the left and right sides, the impact noise during the return is dispersed and reduced. Furthermore, since the cassette detection bosses 63 and 67 are shifted in the longitudinal direction by a predetermined distance, even if the operator fails to take out the cassette tape 200, the tip of at least one of the pair of pop-up levers 70 is The lifted state is maintained, and a state in which the front side of the cassette tape 200 is raised and easy to take out is maintained, and the cassette can be taken out smoothly.

Note that when no cassette tape is stored in the tray assembly 59, the pop-up sliders 62 and 66
are energized inwardly, and the bent portion 62c at the tip of each
, 66c is located inside the pop-up knob control lever 57, or the pop-up slider 62.66
By setting the clearance between the square holes 62b and 166b and the large spacer sleeve 69, it is possible to configure the bent portions 62c and 66c at the ends of each to engage the inside of the pop-up control lever 57 even when there is no cassette tape. . In this case, in the slot/sort-out state, the tip of the pop-up lever 70 is always raised, but when the cassette/sort tape 200 is attached and the cassette tape 200 is pushed down, the pop-up lever 70
0, the tray assembly 59 is pulled into the set position 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.

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

Also, as previously explained, the pop-up sliders 62 and 66 are normally energized inward by the pop-up slider springs 64 and 68. The cassette tape is held between the left and right sides by the cassette detection bosses 63 and 67 even when the cassette tape is in the cassette position.By suppressing the vibration of the cassette tape 200, it improves the set performance by improving wow and flutter, improving jitter, reducing noise, etc. ° Effective for improvement.

Furthermore, a display member 91 called a pop-up demo card is detachably housed in the five tray assemblies, as shown in FIG. 21, for example, when the VTR set is shipped. This display member 91 displays, for example, instructions for handling, etc., and is folded back on the front side (front side) to form two upper and lower panels, and is normally energized in the closing direction (see the 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 and the groove of 0, 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 touching the five tray assemblies when the display member 91 is in the slotted-out state, and as described above, various design characters and illustrations such as instruction manuals are displayed on the surface. is printed, and when the slot is out due to the action of the aforementioned selective pot-up mechanism, the pot-tub up lever 70 opens upward, which has the effect of ensuring reliable handling for the purchaser (including the operator). be.

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 skein and bottom stopper 82 is provided with a shaft 82a as a rotation fulcrum.

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

82b is inserted into the fulcrum holes 60i, 60j of the tray frame 60 using the elasticity of the mold. and,
As shown in FIG. 23, when the tray rail 76.80 is screwed to the tray frame 60 with the screw 111, the cassette stopper 82 restricts the amount of removal of the shafts 82a, 82b by the screw 111, and prevents their removal. be done. The cassette stopper 82 is biased in the closing direction by a cassette stopper spring 83, and in conjunction with the slot-in operation, a cassette lid opener 38 provided on the rear reinforcing plate 37 (described later) opens the 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 side of the cassette stopper 82, through which the tape running component 350 of the tape drive section can be seen diagonally from above when the slot is opened (see FIG. 6). On the other hand, a similar hole 37a is provided in the rear reinforcing plate 37, so that inspections such as tape running adjustment of the tape drive unit can be carried out without any trouble when the device is assembled.
Tests can be conducted. In this way, the cassette stopper 82 also serves to hide the inside of the tape drive section when the slot is out, thereby preventing the operator's fingers or the like from entering the tape drive section. Further, as shown in FIG. 25, it also serves as a final stopper when the cassette tape is mounted by climbing over the bent portions 61b, which are stoppers in the front and back direction of the cassette tape provided on the rear left and right sides of the tray plate 61.

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

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

86a to restrict the horizontal position of the tray lifter assembly 1, guide the movement in the front and back direction, and hold it in the vertical direction. Lifter operating pins 3 are provided on the outside of the lifter 2 at four locations on the left, right, front, and rear, and the lifter operating pins 3 pass through a total of four guide holes in the side chassis 10.26, which will be described later, to the left side of the rack slider. and right 14.30
A total of four lift grooves 14a, 14b, 30a, 30b
is engaged in. A total of four guide holes 10b, 10c, 26b, and 26c in the side chassis 10.26 are designed to guide the lifter operation pin 3 up and down. Each of the four lift grooves of the rack slider 14.30 has an inclined groove in the center for moving the lifter operating pin 3 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 moved to the up position when the tray lifter assembly 1 is in the rear position, and the rack slider 14.30 is moved to the down position when the rack slider 14.30 is in the front position, with the position of the tray lifter assembly 1 being restricted in the front-rear direction.

In addition, there are two guide holes 10b in the side chassis 10.26 at four locations, two at the front and rear.

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

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

2b is provided. These holes 2a, 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. Note that the left and right holes 2a of the lifter 2.

2 b'c;! , its periphery is reinforced by bending and drawing so that the leaf spring 5 can be held.

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 advance with a bending force, and when a cassette tape is inserted in the slot-in operation, it bends further by a predetermined amount to press and hold the cassette tape. The hold roller 6 has the effect of smoothing the insertion of the cassette tape during slot-in operation,
This has the effect of preventing the top surface of the cassette tape from being scratched by sliding.

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

Note that the above setting performance 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, which are sandwiched between the lifter 2 and the leaf spring 5, at the rear of the upper left and right sides of the tray lifter assembly 1, respectively. The cassette detection switch 8 is operated by a leaf spring 5 as shown in FIG. It becomes OFF state by bending upward by a predetermined amount (
See figure (b). By using the leaf spring 5 for the operation of the cassette detection switch 8, the structure is extremely simple.

The two cassette detection switches 8 are again connected in parallel to the control unit 300 as shown in FIG. 11, and when both of the two cassette detection switches 8 are OFF when five tray assemblies are slotted in Only then does the control section determine that there is a cassette tape, and drive the five tray assemblies to the slot-in position as will be described later. At this time, when one or both of the cassette detection switches 8 are in the ON state, the tray assembly 5 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. In this third stop position, the tray assembly 59 is
This is the position where the tray assembly 59 is housed within 0, and is near 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 tray assembly 59 will be at the third stop position instead of the slot down position.
By stopping and waiting for both slots, 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, it is possible to insert the cassette tape 200 in the longitudinal direction, or to insert a tape other than a regular cassette tape, such as a C cassette.

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 the control is controlled by turning on both photosensors 23 and 47 for tape end detection, which will be described later. The section 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, one sensor shutter, 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 gate-shaped structure as a whole. The side chassis left assemblies 9 and 25 are screwed to the main chassis.

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

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

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

This is because the rack slider 14 and 0 are returned due to the reaction of the drive belt 44, an unexpected external force, etc., and the lifter operation bin 3
This is to prevent the cassette tape from being incompletely crimped due to the engagement of the lifter moving part 3 moving to the inclined groove. It is necessary to lower the pin 3 to the lowest point again, and this load prevents the engagement position of the lifter operation pin 3 from moving, so that the cassette tape 200 is 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 sliders 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.
The flat parts 14g and 30g at the rear part are connected to the shift gears 18 and 18 before the rack gear parts 14f and 30f mesh with the shift gears 1g and 34. By contacting the flat portions 18a, 34a of the shift gears 1g, 34, the postures of the shift gears 1g, 34 are corrected. 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 horizontally moves from the rear to the front, the transmitted light from the light source 400 for detecting the end of the tape is transmitted at the rear,
It is designed to switch to shielding in the middle and transparent in the front. As for this timing, for example, the through hole 14h is switched from transparent to shielded immediately after the rack slider 14 starts moving from the rear position, and the through hole 30h is switched from transparent to shielded a little after the through hole 14h becomes shielded. Set it to change. As shown in FIG. 28, the output timings of the photosensors 23 and 47 are made to have a time difference, and the photosensors 23 and 47 for detecting the end of the tape are
This is to detect the third stop position using the time difference between the outputs.

Horizontal recesses 14i and 301 are provided on the outer sides of the rack sliders 14 and 30, respectively, in the front-rear direction, and the through holes 14h, 30h for guiding the transmitted light for detecting the tape end described above are formed in the recesses 14i, 301. 30i. As shown in FIG.
.

45゛b are inserted with a clearance so that they overlap when viewed from the top of the set. The convex portions 22b and 45b of the sensor holder 22.degree. 45 are provided with through holes 22a through which transmitted light for tape end detection passes.

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

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

The sensor shutter 19 is a lever that operates to block or transmit the light from the light source 400 to the photosensor 23 through the transmission hole 10f, and is normally biased by the shutter spring 20 in the direction of transmission. has been done. At a position slightly before the five tray assemblies are slotted in and end their horizontal movement, and at a position housed in the front cabinet, the sensor shutter 19 is moved to the top of the left rear end of the tray frame 60 of the tray assembly 59 at the timing shown in FIG. It is operated in the shape 16j and rotated to shield,
A monitoring section is set by blocking or controlling the transmitted light passing through the through hole 14h of the rack slider 14, and the third
Set the stop position to the desired position. This achieves highly reliable drive control. 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 has an abnormality detection logic that counts the time from the start of slot-in until reaching the third stop position, determines that there is an abnormality in operation, and reverses the drive motor 35 after a predetermined time has passed. 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 long time for the drive motor 35 to release the reversal after being caught, but 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 is repeated several times, it is possible to speed up detection. The area from the start of slot-in to the third stop position is divided finely by blocking and transmitting the sensor shutter several times, and the control unit 300 determines the time required to move each section to detect an abnormality. Therefore, the detection time is greatly shortened, and the drive motor 35 can be reversed almost instantaneously even when the hand or fingers are pinched.
Furthermore, the safety can be improved.

Note that the means for detecting abnormalities by dividing the area from the start of slot-in to the third stop position is not limited to the above example, and a rotating plate with slits (not shown) that operates in response to the five tray assembly operations 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, 34 are pivotally supported inside each of the rear portions of the right 26 so as to be rotatable through a predetermined angle. The shift gears 18, 34 are each biased in one direction by a shift gear spring 17.33.

The shift gears 18 and 34 are connected to the tray rail 7 as described above.
6.80 rear upper rack gear part 76b.

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

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

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 five tray assemblies. Further, at the inner rear of each of the side chassis 10.26, a pair of side chassis tray regulating portions 12°28 are provided as described above.
Reliably regulating the position of the tray lifter assembly 1 in the front and back direction,
Rack gear part 76 at the rear upper part of the tray rail 76°80
Accurate gear meshing between shift gears 1g, 34 and shift gears 1g, 34 is realized. Also side chassis 10.2
As described above, a pair of side chassis tray regulating section fronts 13.29 are provided on the inside front of each of the tray rail position regulating sections 77 in the slotted out state.
．． 81 to accurately guide the left and right sides of the tray assembly 59, and also to guide the tray assembly 59 in the slot-out state.
This reduces vertical wobbling.

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 moving 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 tray assembly five slot-out position, the horizontal movement ends. It is OFF until then, and it is ON from immediately after the right rack slider 30 moves forward until the end of the forward movement, and from the start of vertical movement of the 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 unplugging during operation, for example,
There is no need to create a special logic program to determine the position of the tray assembly 59, and the position can be determined instantly by simply providing a switch 24 that detects whether it is moving horizontally or vertically. This makes it possible to achieve quick control that is straightforward and appropriate for each case.

A sensor holder 22 is fixed to the left outer side of the side chassis 10. Rack slider 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 has a relay board 23 on the outside.
a is attached. The terminals of the photosensor 23 are soldered and attached to this relay board 23a. Note that the surface of the relay board 23a is painted black,
Depending on the set, external light incident through the air vent hole on the left side of the cabinet is prevented from transmitting and causing the photosensor 23 to malfunction. This reliably prevents external light from entering the photosensor 23.

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 wiring materials, etc. of the set.

A tray drive assembly 39 is provided on the right outer side of the side chassis assembly 25 for transmitting the driving force of the drive motor 35 at reduced speed, and the three tray drive assemblies are connected to the tray drive base 40. It is composed of a reduction gear 41, a pulley gear 42, 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. This restricts the rack slider 30 from floating to the right outside. As a result, since the rack slider 30 engages with the simple-shaped rack slider guide boss 27, no washer or the like is required, contributing to a reduction in the number of parts.

A relay board 46 is attached to the outside of the sensor holder 45. Terminals of the photo sensor 47 are attached to this relay board 46 by soldering. The relay board 46 is made of black material or its surface is painted black, and depending on the set, external light entering from the air vent hole on the right side of the cabinet may pass through the board. This is prevented so that the photosensor 47 does not malfunction. 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 six 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. This allows the side chassis 10.26 to maintain very precise width dimensions and mutual parallelism.

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

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

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

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 moved to the cabinet 210. This prevents the cassette tape loading/unloading opening from being lifted and deformed.

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

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

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

87a10 Tsuku claw parts 86b, 87b and operation post 86c
, 87c. And door lock lever 86,8
7 are grooves 60d and 60c in the upper part of the tray frame 60.
as shown in Fig. 37, and this ti
A cassette door 2 that opens and closes the cassette tape loading/unloading opening of the cabinet 210 under the control of 60d and 60c.
Lock or release the eleventh locking member 212 (third
Figure 8.

(See Figure 39). The cassette door 211 is the cabinet 2
The biasing spring 213 is rotatably supported by the energizing spring 213.
is energized in the closing direction by That is, the door lock levers 86 and 87 are each biased and held by a door lock lever spring 88 in a direction to lock the lock member 212 of the cassette door 211. and,
When the slot-out operation is started from the slot-in state of the tray assembly 59, the cassette door 211 is pushed by the tray assembly 59 and opens against the spring force of the biasing spring 8 (see FIG. 38(b)). . At this time, the door lock levers right and left 86.87 have their operating posts 36c, 8
7c is still the groove 60d on the left and right top of the tray frame 60,
Since it is engaged with 60c, the door lock levers 86, 87
The lock claws 86b and 87b are released from the lock member 212 of the cassette door 211 and released. A door lock lever is attached to the tip of the lock member 212 of the cassette door 211.
A tapered shape is provided to push away the lock claws 86bb and 87b of the cassette door 211, but this is because the lock member 212 of the cassette door 211 and the door lock levers 86 and 86 on the right and left sides may be dislocated due to variations in component precision when the cassette door 211 is closed. .87 lock claw parts 86bb, 87b
This arrangement is designed to ensure that the cassette door 211 can be closed completely even if there is interference. Furthermore, when the five tray assemblies are slotted in from this slot-out state, the operation posts 86c, 8.7c of the door lock levers 86, 87 are removed from the grooves on the left and right upper portions of the tray frame 60, and the door lock lever spring 88 causes the door lock lever right and lock claw part 86bb on the left 86.87
, 87b are engaged with the locking member 212 of the cassette door 211, and the cassette door 211 is locked in the closed position. If the cassette door 211 is allowed to open when the cassette tape 200 is already in the set, there is a possibility that the user may accidentally perform the slot-out operation with his or her hand inside the set, causing the hand to be caught and the hole to be opened. Although there is a risk, when the five tray assemblies are housed in the cabinet 210, the cassette door 211 is closed and locked, so the operator does not make the above-mentioned hole.

When the tray assembly 59 is slotted out in the front direction, first the operation boss 86a of the door lock levers 86, 87 is
, 87a is operated by engaging with the grooves on the left and right upper portions of the tray frame 60, and the door lock levers 86, 87
lock claw portion 86b.

After the locking member 87b of the cassette door is released, the tray assembly 59 pushes the cassette door 211 open.

A second oven/close switch 100 is provided between the cassette door 211 and the cabinet 210 via an elastic member (not shown) (see 39th line). (not shown) is determined by the preload.

In this state, the second oven/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 open/close switch 100 itself. Also, cassette door 2
When the cassette door 211 is closed, the cassette door 211 can be slotted out by pressing a separately provided open/close switch 101, but it can also be slotted out by pressing the main body of the cassette door 211.

The second open/close switch 100 and the open/close switch 101 are connected to their respective output ends or to the control unit 300, and open/close the cassette door 211 via the control unit 300 in response to the ON-OFF state. do.

The reinforcing plate lower assembly 54 is composed of a lower front reinforcing plate 55, a pop-up control lever holding plate 56 between the left and right sides, two pop-up control levers 57 on the left and right sides, and two pop-up control lever springs 58 on the left and right sides.

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 and 66c at the rear ends of the left and right pop sliders 62,66,
In the slot-out operation, the bent portions 62c and 66c at the rear tips of the left pop-up slider 62 and right pop-up slider 66 are engaged and operated, and in the slot-in operation, the rear tips of the left pop-up slider 62 and the right pop-up slider 66 are bent. It can be pushed by the parts 62c and 66c and rotated in the direction of escape.

The drive transmission unit that synchronously transmits the driving force to the left and right side chassis parts includes four connect springs and 50 connect gears.
, a tray drive shaft 51, and tray drive gears left and right 52 and 53. The tray drive shaft 51 is provided 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 52.
As shown in FIG. 40, reference numeral 53 denotes a small gear portion 52a which meshes with and operates gears 60a and 60b provided inside the left and right side chassis 10.26 at the left and right lower portions of the tray frame 60, respectively. , 53a, and 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 the gear parts 14e and 30 provided on the lower front sides of the left and right rack sliders 14.30, respectively.
(See FIG. 41).

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

The number of teeth is set to 53a or a multiple of 6. This allows the left and right tray drive gears 52 and 53 to be easily assembled without worrying about the left and right gear phases. In addition, the small gear parts 52a, 53a and the large gear part 52
b, 53b gear teeth ratio is drive gear left and right 1
6.32, the ratio of the number of gear teeth between the inner gear parts 16a, 32a and the outer gear parts 16b, 32b is 1:2 (for example, 1
2 teeth; 24 teeth), and a mark X that matches the phase is provided for every two teeth (see Fig. 41), and is assembled so that these marks match. Note that the ratio of the number of gear teeth is 1
: Even if it is not 2, the same effect can be obtained as long as 1 is an integer and the ratio of the number of gear teeth is the same as that of the inner gear parts 16a, 32a and the outer gear parts 16b, 32b of the left and right drive gears 16.32. is obtained.

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.

32a, and the inner gear parts of the left and right shaft gears 18.34 mesh 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 30 on the rear upper side of the right rack slider 30, respectively.
The outer gear portions that mesh with f use the same gears, but the small gear portions 52a, 53a of the left and right tray drive gears 52.53 and the inner gear portions 16a of the left and right drive gears 16°32. , 32a do not necessarily have to have the same number of teeth or the same module. In this case, the small gear parts 52a and 53a of the left and right tray drive gears 52.53
and drive gear left and right 16.32 inner gear part 1
The ratio of the pitch diameters of the shaft gears 6a and 32a and the ratio of the pitch diameters of the inner gear portion and the outer gear portion of the left and right shaft gears 18° 34 may be made the same.

For example, if the pitch circle diameter of the small gear parts 52a, 53a of the tray drive gear left and right 52.53 is made larger than the pitch circle diameter of the inner gear parts 16a, 32a of the drive gear left and right 16.32, the tray The reduction ratio of the horizontal movement of the tray assembly 59 driven by the left and right drive gears 52 and 53 is increased, and the force when fingers or hands are pinched is weakened. As mentioned above, since the operating load for horizontal movement is smaller than 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 of the sharpener that is caught in a finger or hand, only horizontal movement can be performed with a low drive voltage. Compared to the case where the force when a finger or hand is caught is weakened by implementing this method, it is possible to control the motion more quickly.

Furthermore, a connect gear 50 is coaxially supported on the right outer side of the tray drive gear 53 via a connect spring 49 and the right tray drive gear 53 . 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 four connect springs are bosses 53c and 5 protruding from the tray drive gear 53 and the connect gear 50, respectively.
0a are brought into contact with each other and the two are held in place. When in the slot-out state (see FIG. 43(b)), the tray drive gear 53 is connected via the connect gears 50 to 49, and when in the slot-in state (see FIG. 43(a)), the tray drive gear 5 is connected.
The driving force is directly transmitted from the tray drive gear 53 to the tray drive gear 53. When 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 five actuating parts of the tray assembly are disengaged from the tray detection lever 89, the tray detection switch 90 is switched from ON to OFF, the drive motor 35 is rotated by the circuit, and slot-in is started.

Note that the left and right tray drive gears 52 and 53 have room to further rotate relative to the connect gear 50 by the amount of deflection of the connect spring 49 even after the tray detection switch 90 is switched from ON to OFF. As a result, when the tray assembly 59 is pressed against the spring force with a small operating force, the connect spring 49 allows the tray assembly 59 to move by the amount of deflection and activates the tray detection switch 90. Turn it 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 configure it with a click mechanism or the like that holds the slot out position. In this case, the drive motor 35 continues to rotate until the slot-out position is held by a click mechanism or the like at slot-out, and then, after the tray detection switch 90 is switched from ON to OFF, the drive motor 35 is rotated to a certain extent with a margin. The reverse rotation rotates the connect gear 50 relative to the left and right tray drive gears 52 and 53. Tray drive gear left and right 52.
53 is separated from the drive motor 35 until the bosses 53c and 50a protruding from the tray drive gear 53 and the connect gear 50 come into contact with each other, so the insertion force required to insert the tray drive gear into the slot is only the force that releases the click mechanism, etc. Similarly, slot-in can be started with a small pressing force.

Furthermore, 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 and 53, the force of the four connect springs can be further reduced, resulting in an even smaller pressing operation force. 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 the slot-out operation. For example, if it is provided with a one-way clutch function so that the damper is removed when the slot is in and the damper function is activated when the slot is out, the insertion force for slot-in is applied to 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 hole 26f, which is a guide portion, provided on the right side chassis 26 and projects into the inside of the right side chassis 26. A rotary plate 110 having a relief part 110a and a locking part 110b is fixed to the rotary boss 92c inside the side chassis right 26, and holds the damper 92 rotatably and slidably along the elongated hole 26f. are doing. The locking portion 110b of the rotating plate 110 is located on the right side 26 of the side chassis.
When the right drive gear 32 rotates in the slot-out direction, the locking shape 26g engages with the right drive gear 32. , the damper 92 is energized to the front side and the locking shape 26 of the side chassis right 26
g engages with the locking portion 110a of the rotary plate 110 to stop the rotation of the damper body 92b, thereby functioning as a damper (see FIG. 46(b)). And drive gear right 3
2 rotates in the slot-in direction, the damper 92 is biased toward the rear due to the rotational direction of the right drive gear 32, the slight rotational load between the rotation boss 92c and the elongated hole 26f, and the shape of the relief part of the rotation plate 110. The locking portion 110b of the rotary plate 110 escapes from the locking shape 26g of the right side chassis 26, and the damper body 92b rotates together with the gear portion 92a, so the damper function does not work (see FIG. 46(a)). . The rotation direction of the drive gear right 32, the elongated hole 26f of the side chassis right 26, the slight rotational load of the rotation boss 92c and the elongated hole 26f, and the locking shape 2 of the side chassis right 26.
6g 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.

When slotting out the tray assembly 9 from this state, the open/close switch 101 or the cassette door 211 is pressed. Then, the second open/close switch 100 operated by the open/close switch 10a or the cassette door 211 is turned on. The open/close switch 101 and the second open/close switch 100 are connected to the control section 300 as shown in FIG. 11, and output an ON signal to the control section 300. The control unit 300 outputs a drive signal to the drive circuit 301 in response to the ON signal. The drive circuit 301 rotates the drive motor 35 using the first voltage from the power supply circuit 302, and the tray assembly 5 is rotated.
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 five tray assemblies are 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 to apply the brakes to stop the drive motor, and then the drive motor terminals are opened to standby. The first voltage is a voltage for normal operation, and the second voltage is set lower than the first voltage in a power supply circuit set for safety measures, which will be described later.

The reason why the rotation is continued for a predetermined time at the slot out end is to ensure that the drive motor 35 is energized to the end position.After that, the drive motor 35 is reversed for a predetermined time by connecting the tray drive gears 52 and 53 to the connect gear 50 and the left and right tray drive gears.
This is to provide a predetermined amount of relative rotation to the five tray assemblies for the next slot-in operation. By inverting the drive motor 35 for a predetermined period of time using the second voltage and then applying a short brake between the drive motor terminals, this predetermined amount of relative rotation can be achieved by turning on the tray detection switch 90 when the 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 opening between the terminals of the drive motor is a countermeasure in case the drive motor 35 is not driven for some reason. If it does not slot in 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 open until then, so the drive is less likely to occur than a short circuit between the terminals. When the motor terminals are open, it can be pushed in with a relatively light pressing force. Further, even when the set is not powered on, the drive motor terminals are open, so the tray assembly 59 can be manually pushed into the cabinet 210 with a relatively light pressing force.

Next, when slotting in from the slot-out state, it is carried out by switching the open/close switch 101 or pressing the five tray assemblies. That is, when the open/close switch 101 is pressed, the control unit 300 turns on the switch 101.
is detected and the drive motor 35 is rotated at the second voltage via the drive circuit 301 and the power supply circuit 302 to be inserted into the slot. In addition, when the tray assembly 59 is pushed, the tray drive gear left 52 and the tray drive gear right 53, which are operated by the lower left and right rack gear parts 60a and 60b of the five tray assemblies, are connected to the connect gear by the deflection of the connect spring 49. Since it rotates relative to the drive motor 50, it is separated from the drive motor 35 and can be pushed in with a light pressing force. When the tray assembly 5 is pushed in and the operating part of the tray assembly 59 is disengaged from the tray detection lever 89, the tray detection switch 90 is switched from ON to OFF, and the control unit detects this and switches the drive motor 35 to the drive circuit 301 and the tray detection switch 90. It is rotated at the second voltage via the power supply circuit 302 and inserted into the slot.

At the slot out end, the transmitted light for tape end detection is transmitted on both the left and right sides, or 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 five tray assemblies are stored in the cabinet 201.
It is set slightly after and 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 is switched to shielding at the third stop position, 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 and operates the shaft gears left and right 18.34, and the shaft gears left and right 18.34 actuate the rack sliders left and right 14.34. , 30, and engages with the rack gear parts 14f, 30f at the rear upper part of the rack gears 14f, 30f to move them forward. The rack gear parts 60a and 60b on the left and right lower sides of the tray frame 60 of the tray assembly 59 are disengaged from the left and right tray drive gears 52.53, and the rack sliders left and right 14.30 mesh with the left and right drive gears 16.32. , it will be moved further forward. This tray rail left and right 76°80 to drive gear left and right 16.3
2 is carried out as described above, and here the tray assembly 59 is housed and held in the tray lifter assembly 1. And when the rack slider left and right 14.30 is moved to the front, the rack slider left and right 14.30
The tray lifter assembly 1 is lowered by guiding the lifter operating section 3 engaged with the lift groove provided in the lift groove, and the tray assembly 59 held by the tray lifter assembly 1 is lowered to remove the cassette tape. 200 to the tape drive section. When the left rack slider 14 starts moving forward, the switch 24 is turned from OFF to ON. At the end position of the rack slider 30 in the forward direction, the tray detection lever 89 is operated to switch the tray detection switch 90 from OFF to ON. The control unit 300 detects that the switch 24 is turned on and the tray detection switch 90 is switched from OFF to ON, stops the drive motor 35, and ends the slot-in operation.

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

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

Further, when a cassette tape is present, switching from the second voltage of the drive motor 35 to the first voltage during slot insertion may be performed at the switching position of the cassette detection switch 8. In this case as well, when slotting in without a cassette tape, the control unit 300 operates to preferentially stop the tape when it reaches the third stop position.

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 tray assembly 59 is 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 performs the slot-in operation and the briefly described operation. Slotted out smoothly. When the cassette tape is slotted out, the selective pop-up mechanism is activated as described above, and one end of the two pop-up levers 70 is raised to lift the front side of the cassette tape in the five tray assemblies, and then Then, the operator can remove the cassette tape from within the tray assembly 59. cassette tape 20
0 is removed, one end of the two pop-up levers 70 is lowered again by the action of the selective pop-up knob mechanism, and returned to the original position and stored, waiting for the next cassette tape to be loaded. do.

In this way, the cassette loading device detects the third stop position where the five tray assemblies are housed in the cabinet from the cassette tape attachment/detachment position using the left and right photosensors 23.47 for detecting the end of the tape. By configuring the drive voltage of the drive motor 35 for driving the tray transfer to be varied with respect to the stop position of the tray, it is possible to promote user safety in the horizontal tray transfer state and to save power. Tray transfer at the station can be speeded up. According to this, the controller 300 compares the tray transfer time from the cassette tape attachment/detachment position to the third stop position with a preset tray transfer time to confirm whether or not the tray transfer is possible. This also contributes to safety measures during tray transfer.

Further, according to this, the sensor shutter 19 is provided which is operated in conjunction with the transfer of the five tray assemblies and blocks light from the light source 400 to the left photosensor 23, so that the sensor shutter 19 is operated in conjunction with the transfer of the five tray assemblies. Monitoring in the monitoring zone can be speeded up, and safety measures for tray transfer can be improved.

Furthermore, the photosensors left and right 23° 47 are located in the transparent holes 10f and 26 of the left and right side chassis 10.26.
By arranging the space between the third stop position and the third stop position so as to be covered by a wall surface, it is possible to prevent light from entering from the outside world, and it is possible to reliably detect the third stop position.

Note that this invention is not limited to the above embodiments, but also includes
It goes without saying that various modifications can be made without departing from the spirit of the invention.

[Effects of the Invention] As detailed above, according to the present invention, it is possible to provide a tray-type cassette loading device that has a simple configuration, is safe, and can realize reliable handling operations. I can do it.

[Brief explanation of drawings]

1 to 3 show a cassette loading device according to an embodiment of the present invention, in which FIG. 1 shows the slot-out state, FIG. 2 shows the slot-in process, and FIG. 3 shows the slot-in completed state. FIG. 4 is a perspective view showing a cassette tape to which the present invention is applied, and FIGS. 5 to 46 are views shown to explain details of each part of FIGS. 1 to 3. . 1...Tray lifter assembly, 2-...Lifter 3-
...Lifter operation bin, 4...Guide roller, 5...
- Leaf spring, 6... Guide roller, 7... Roller shaft,
8...Cassette detection switch, 9,25...Side chassis assembly, 10.26...Side chassis, 11.
27...Rack slider guide post, 12.13.
...Side chassis tray regulation section rear and front, 14.3
0...Rack slider, 16.32...Drive gear, 1.8.34...Shift gear, 19...Sensor shutter, 21...Sensor shutter shaft screw, 23.
47... Photo sensor, 23a, 46... Relay board, 24... Switch, 28. 29... Side chassis tray regulating section rear and front, 35... Drive motor, 3
6... 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, 52.53...Tray drive gear, 54...Reinforcement plate front assembly, 55...
Lower front of reinforcing plate, 56...Pop-up control lever holding plate, 57...Pop-up control lever 59...Tray assembly, 60...Tray frame, 61...Tray plate, 62.66...Pop-up slider, 6
3.67...Cassette detection boss, 70...Pop-up lever 72...Cassette lid lock release lever
74.78...Click lever 76.80...Tray rail, 77.81...Tray rail position regulation part, 82...Cassette stopper, 84...Reinforcement plate front assembly, 85...Reinforcement plate front , 86° 87... Door lock lever 89... Tray detection lever 90... Tray detection switch, 91... Display member, 92... Damper
100...Second open/close switch, 10
1... Open/close switch, 110... Rotating plate, 200... Cassette tape, 210... Cabinet, 250... C cassette adapter 300
...Control unit, 301...Drive circuit, 302...Power supply circuit, 400...Light source.

Claims (2)

[Claims] (1) A cassette loading device in which a tray on which a cassette tape is attached/detached is provided so as to be freely removable from the front surface of the cabinet, and the cassette tape is transferred to and loaded into a tape drive section in the cabinet via the tray, the motor being a tray transporting means for transporting the tray between a first position protruding from the front surface of the cabinet where the cassette tape is loaded and unloaded and a second position where the cassette tape is loaded into the tape drive unit; first and second light-receiving elements, which are disposed across a light source provided in the cabinet in correspondence with the cassette tape, and detect tape ends on the supply side and take-up side of the cassette tape; a third position where the side of the tray protruding from the cabinet at an intermediate position between the second position is accommodated in the cabinet from the front surface of the cabinet;
a light guide means for transmitting light from the light source with a time difference between the first and second light receiving elements; A cassette loading device characterized by comprising a detection means for detecting the position. (2) A cassette loading device in which a tray on which a cassette tape is attached/detached is provided so as to be freely removable in and out of the front surface of the cabinet, and the cassette tape is transferred and loaded into a tape drive section in the cabinet via the tray, the motor a tray transporting means for transporting the tray to a first position protruding from the front surface of the cabinet, where the cassette tape is loaded and unloaded, and a second position, where the cassette tape is loaded into the tape drive unit; first and second light-receiving elements, which are disposed across a light source provided in the cabinet corresponding to the above, and detect tape ends on the supply side and take-up side of the cassette tape; A shutter member that transmits and blocks the light, and a detection means that detects the third position located between the first and second positions by switching the light to and from the light through the shutter member. cassette loading device.