JPH05258422A - Opening/closing device for tray system cassette loading mechanism - Google Patents

Abstract

PURPOSE:To constitute the driving power source of the tray device itself regardless from a driving source for opening and closing a door and to sufficiently obtain the respective driving powers thereof. CONSTITUTION:This tray device 100 has a bottom plate which can be disposed with cassettes 200, 300. A housing 10 has a horizontal guiding means which guides the tray device freely insertably and removably in a horizontal transverse direction heading toward the deep side from the front face opening 12 side and internally has a reel hub for a cassette to be lowered together with the above-mentioned bottom plate from the tray device and a cassette driving part for driving a tape. The first driving source 21 is provided in order to move the tray device in the above-mentioned transverse direction. The door 13 is provided by having a turning fulcrum at the end of the above-mentioned front face opening of the housing. Door opening/closing control mechanisms 43, 1100, 1120, 1200 open the door 13 by the driving power from the second driving source 51 separate from the first driving source 21 in synchronization with the leading out of the tray device through the above-mentioned front face opening from the inside of the housing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mounts a cassette used in, for example, a video tape recorder (hereinafter referred to as a VTR) or a digital audio tape recorder (DAT) to carry it into or out of the device. The present invention relates to a system, and more particularly to a door opening / closing device for the tray mechanism.

[0002]

2. Description of the Related Art In recent years, many television broadcast programs have been available for a long time. With the start of satellite broadcasting, the number of programs whose broadcasting hours extend to midnight is increasing. Therefore,
The VTR's recording system is also shifting to allow recording during absence and long-term recording.

However, since the current VTR has a structure in which only one tape cassette is loaded and long-time recording or absence recording is performed, the recording capacity is limited. Further, there are restrictions on the production of a large-capacity cassette tape because there is a standard for the size of the cassette. In order to solve this, a proposal has been made to construct a VTR so that a plurality of cassettes can be loaded. However, when handling a plurality of cassettes, handling and management of the cassettes becomes complicated, and a system capable of rational handling management is desired.

[0004]

At present, a tray system has been developed as a cassette loading system for VTRs. Therefore, the inventor of the present invention further develops this tray system, and envisions a tray device capable of mounting a plurality of cassettes, and selectively moves the tray device to a plurality of positions inside and outside the device to mount the cassette. Go,
The idea was to install a cassette into the cassette drive unit (the part that drives the reel hub and tape of the cassette) or to retract the cassette.

However, the tray device capable of mounting a plurality of cassettes is different from the conventional one, and the weight is heavy and the inertia is large at least for the number of the mounted cassettes. In addition to this, it is necessary to selectively control the movement of the tray device to a plurality of positions. Therefore, a large power control device is required for the movement control means. Etc.
Unlike the conventional case, if the tray devices do not operate in synchronism with the movement of the tray devices, the heavy tray devices may be damaged if they collide. Furthermore, although the door opens and closes the front opening of the device, the user may forcibly apply an opening / closing external force to this door regardless of the control of the device. Here, when the operating direction of the door by the door control mechanism is different from the operating direction of the door by external force, the door control mechanism or the door itself may be damaged.

Therefore, the present invention firstly provides a door opening / closing device for a tray type cassette loading mechanism in which the power source of the tray device itself is irrelevant to the door opening / closing power source so that the respective powers can be sufficiently obtained. With the goal.

Further, it is possible to provide a door opening / closing device for a tray type cassette loading mechanism, which obtains the power for opening / closing the door from the power source for the other function control section and effectively utilizes the power source of the entire apparatus. To aim.

Further, when the power for opening and closing the door is obtained from the power source for the other function controller, the door of the tray type cassette loading mechanism can be efficiently transmitted and the increase in the number of parts can be suppressed. An object is to provide a switchgear.

Still another object of the present invention is to provide a transmission mechanism for transmitting power from a power source to a door to control the opening / closing of the door, and a door opening / closing device for a tray-type cassette loading mechanism for ensuring the safety of the door itself. To do.

[0010]

[Means for Solving the Problems]

(1) The present invention provides a tray device having a bottom plate on which a cassette can be placed on the upper surface side, and a horizontal guide means for guiding the tray device in a horizontal front-rear direction from the front opening side toward the rear side so that the tray device can be inserted and removed freely. A casing provided with a cassette drive unit that drives a reel hub of a cassette that is lowered together with the bottom plate from the tray device and a cassette drive unit that is provided in the lower part of the moving path of the tray device inside, and the tray device. A first drive source for moving in the front-rear direction, a door provided with a rotation fulcrum at an edge of the front opening of the housing, and the tray device passing through the front opening from inside the housing. A door opening / closing control unit that opens the door via a lever to which power is transmitted from a second drive source different from the first drive source is provided in synchronization with the derivation.

(2) Further, according to the present invention, when the tray device is moved to a predetermined position of the casing by the first drive source, the bottom plate of the cassette arranged in the tray device is moved to the cassette drive section. And a second drive source serving as a drive source of the cassette crimping guide mechanism, and a rotation fulcrum provided at the edge of the front opening of the housing. A door and a door opening / closing control unit that controls to open the door by switching the power direction of the second drive source in synchronization with the tray device being led out from the inside of the housing through the front opening. Equipped with.

(3) Further, in the invention, one cam driven by the second drive source, a first cam groove provided in the cam for transmitting power to the cassette crimp guide mechanism, and A second cam groove for transmitting power to the door opening / closing control means.

(4) Further, according to the present invention, a tray device having a bottom plate on the upper surface side of which a cassette can be arranged, and the tray device is guided so as to be freely inserted and removed in a horizontal front-back direction from the front opening side toward the rear side. A case having a horizontal guide means and a cassette drive unit for driving a reel hub and a tape of the cassette, which is descended together with the bottom plate from the tray device, in the lower part of the moving path of the tray device inside, and a casing.
First for moving the tray device in the front-back direction
Drive source, a door provided with a rotation fulcrum at an edge of the front opening of the housing, and opening the front opening by driving the locking portion in a predetermined direction, and the tray device includes the housing. A control lever in which power is transmitted from a second drive source other than the first drive source to one end side and the other end side is rotated in synchronization with being led out from the inside of the body through the front opening. The control lever is rotatably attached to the other end side, a fixed position is set by a spring, and the pivot end is locked to the locking portion of the door. And a drive lever that elastically drives the locking portion in the predetermined direction against the spring to open the door.

(5) Further, according to the present invention, when the tray device is moved to a predetermined position of the housing by the first drive source, the bottom plate of the cassette arranged in the tray device is moved to the cassette drive part. To the cassette crimping guide mechanism, a second drive source serving as a driving source of the cassette crimping guide mechanism, and in synchronization with the tray device being drawn out from the inside of the housing through the front opening. A power switching means for switching the power direction of the second drive source and transmitting the power to one end of the control lever; and a fixed position set by a spring rotatably attached to the other end of the control lever, The pivoting end is locked to the locking part of the door, and when the control lever is driven, the locking part is elastically driven against the spring in the predetermined direction to release the door. And a drive lever to state.

[0015]

By the above means, (1) the first power source for horizontally driving the tray device, which becomes heavy, and the second power source for opening and closing the door are separated. Each of them can be driven with various powers, and quick movement and accurate position movement of the tray device can be obtained. (B) Together with this, when the door is opened, it can be released in a timely manner. (2) In addition to what has been described in (A) and (B) above, (C) effective use of the power source can be realized. (3) In addition to the above (A), (B), and (C), the configuration of the power transmission path to the door (D) is simplified. (4) In addition to the above (A) and (B), when an external force is applied to the door, (E) damage to the power transmission path and damage to the door can be prevented.
(5) The above (A), (B), (C), and (E) can be obtained.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show a V to which the present invention is applied.
It is a figure which shows a chassis main body part taken out from the TR case, and shows an external appearance. 1 is a view from the front left side, showing the tray device 100 in a state where it is pulled out from the chassis main body portion to the maximum, and FIG. 2 is a view from the front right side, and similarly, the tray device 100 is maximized from the chassis main body portion. FIG. 3 and FIG. 4 show a state in which the tray device 100 is pushed into the innermost portion, and a view seen from the front side on the right side and a view seen from the front side on the left side.

The chassis body includes left and right side plates 31L and 31L.
R, the erection plate 32 erected on the front of the left and right side plates 31L and 31R, and the erection plate 33 erected on the rear part are the main components. The tray device 100 is provided on the side plate 31L.
A horizontal drive motor 21 (FIG.
, And gears 41, 42 for driving members interlocking with the forward and backward movement of the tray device 100, and a cam 43.
(Seen in FIGS. 1 and 4). Side plate 3
1R includes a vertical drive motor 51 for lowering and raising a cassette placed on the tray device 100.
(Seen in Figure 4). Further, a gear 5 for transmitting the movement of the vertical drive motor 51 to various parts.
2, 53, 54, 55 and also a cam 56 are provided (seen in FIGS. 2 and 3). The specific horizontal movement of the tray device 100 and the descending and ascending control means of the cassettes mounted on the tray device 100 will be described later.

FIG. 5 shows the appearance of the tray device 100. The tray device 100 has a frame-shaped tray frame when viewed from the top, and the rails on the outside of the side plates thereof are guided by rollers provided inside the side plate chassis to be horizontally movable. The left and right frames 131, 132 of the frame 101 are hollow inside, and accommodate a link lever of a pantograph mechanism for lowering and raising the cassette, as will be described later.

Here, in FIGS. 1 and 4, a cam 43 for driving a pantograph mechanism incorporated in the tray device is shown.
The cam 43 is connected to the cam 56 by a shaft. The cam 56 is rotationally driven by the motor 51 shown in FIG. 4, and the motor 51 is controlled to rotate normally or reversely by a control signal from the system controller.

Although the casing is not shown in FIGS. 1 to 4, this device actually has a casing 1 as shown in FIGS.
It is housed inside 0. Front opening 1 of this housing 10
A door, that is, a lid 13 having a fulcrum of rotation is attached to the edge of the opening 2, and releases the opening 12 in synchronization with the tray device 100 being pulled out from the inside of the housing 10. This system focuses on the opening / closing control means of the lid 13,
First, the operation of the whole system will be explained.

FIGS. 6A, 6B, and 7 are explanatory views showing the basic configuration of cassette loading and unloading of the VTR to which the present invention is applied. 10 is a VTR
An opening 12 is formed in the front surface of the housing, and the tray device 100 can be horizontally inserted through the opening 12 in the front-rear direction or exposed from the inside of the housing 10. The lid 13 is opened when the tray device 100 is pulled out from the housing 10, and is closed when the tray apparatus 100 is inserted into the housing 10. Although not shown, this is realized by a lid opening / closing mechanism that operates in synchronization with the tray device 100.

A motor 21 is provided at a fixed position as a tray drive mechanism inside the housing 10, and the intermediate gear 22 can be rotationally driven. The intermediate gear 22 has a rotation shaft in a direction orthogonal to the front-back movement direction of the tray device 100, and can drive the drive gears 23, 24 rotatably provided in the front-rear direction, respectively. Drive gear 2
3, 24 can be meshed with a rack provided on the lower surface of the side of the tray device 100 to drive the tray device 100 back and forth. Further, inside the VTR, there is a function of mounting a cassette at a predetermined position and executing tape loading. A main chassis 14 is provided with a reel shaft that engages with the reel hub of the cassette, various components (not shown) necessary for tape loading and tape driving. Further, reference numeral 15 is a rotary head drum to which a tape pulled out from a cassette arranged at a predetermined mounting position is attached by tape loading. 6A shows a state in which the front drive gear 23 meshes with the rack, FIG. 6B shows a state in which both the front and rear drive gears 23 and 24 mesh with the rack, and FIG. 7 shows a rear portion. The drive gear 24 is engaged with the rack.

The tray device 100 has a frame-shaped tray frame when viewed from the top, and the rails on the outside of the side plates thereof are guided by rollers provided inside the housing 10 and are horizontally movable.

In this system, the cassettes 200 and 30 are provided in the front region and the rear region of the upper surface of the tray device 100, respectively.
Two of them can be arranged (FIG. 6 (A)). Pantograph mechanisms 201 and 301 are attached to the front region and the rear region of the tray device 100, respectively. The pantograph mechanisms 201 and 301 are similar mechanisms and can lower and raise the cassette bottom support plate by a link mechanism.

FIG. 6A shows a state in which the cassettes 201 and 301 are placed in the front region and the rear region, respectively. The cassettes 201 and 301 have their front end portions directed obliquely upward because they are lifted by the pop-up mechanism provided in the tray device 100 to facilitate the cassette insertion / removal operation. Moreover, in this state, it is designed so that the rear cassette 300 can be taken out without pulling the tray device 100 largely out of the opening of the housing 10. That is, the entire front cassette 200 is exposed, but the rear cassette 300 is only partially exposed (the tip) from the opening. This is because by designing in this way, the distance for pulling out the tray device 100 can be short, and the proportion of the peripheral space in terms of handling can be reduced.

FIG. 6B shows the rear pantograph mechanism 3.
Reference numeral 01 indicates a state in which the cassette 300 is attached to the cassette drive unit below the tray passing position. Further, FIG. 7 shows a state in which the front pantograph mechanism 201 lowers the cassette 200 and mounts it on a predetermined cassette drive unit.
To move from the state of FIG. 6A to the state of FIG. 6B, the tray drive mechanism operates to move the tray device 100 horizontally toward the inside of the housing 10, and the first detection position (rear) When it reaches the cassette drive position), the tray device 100 is stopped. At this position, a pantograph drive mechanism, which will be described later, operates to drive the pantograph mechanism 301 and lower the cassette 300. From the state of FIG. 6 (B) to FIG.
In order to shift to the above state, the pantograph drive mechanism drives the pantograph mechanism so as to lift the descended cassette 300, and the tray device 100 is returned to the original position. Next, the tray drive mechanism moves the tray device 100 further inward, and when the pantograph mechanism 200 reaches the upper position of the cassette, that is, the second detection position (front cassette drive position), the tray device 100 moves. Stop moving. Then, again, the pantograph drive mechanism drives the pantograph mechanism 201 this time to lower the cassette 200 to a predetermined position.

In the state of FIG. 7, the pantograph mechanism 301 carrying the rear cassette 300 is located just above the rotary head drum 15. Here, the pantograph mechanism 301 is designed to be slightly lifted from the tray device 100 so that the cassette 300 and the pantograph mechanism 301 do not collide with the rotary head drum 15. The member that lifts the pantograph mechanism 301 is the guide member 16 that is attached so as to project to the side surface inside the housing 10. In other words, the bottom plate of the pantograph mechanism 301 is designed such that the bottom plate of the pantograph mechanism 301 rides on the inclined surface of the guide member 16 when the tray device 100 moves further to the back from the state of FIG. There is. As described above, the cassette 300, that is, the pantograph mechanism is slightly lifted at the standby position of the cassette 300. The reason is that when the height of the housing 10 is lowered for downsizing, the movement locus of the tray device 100 is changed. This is because it will collide with the upper portion of the drum 15. This is also because ventilation around the rotary head drum 15 is improved to reduce the temperature rise and the safety of the cassette tape is taken into consideration.

In the state shown in FIG. 8, the tray device 100 is inserted up to the position where the rear area faces the cassette drive section at a predetermined position provided below the rear area. From this state, the cassette can be lowered and placed in the cassette drive unit as shown in FIG. 6B, or the tray device 100 can be moved further to the back to rotate the rear area to the rotary head as shown in FIG. It is also possible to place it on top of the cylinder 15 with the front area facing the cassette drive.

From the state shown in FIG. 6, the tray device 100 is further added.
When is moved to the back, the pin-shaped tip portion 333 of the lever 332 provided at the rear end portion of the pop-up member 330 attached to the rear area is moved to the horizontal groove 910 provided in the fixed chassis 33. Is invaded and guided. The groove 910 is formed by, for example, a guide plate 911 protrudingly provided inside the fixed chassis 33 and a cover plate 912 facing the plate in parallel with the plate. The entrance of the groove 910 is formed wide so that the tip 333 can easily enter. Although the pop-up operation of the pop-up member 330 will be described later, when the tray device 100 is pulled out, the pop-up member 330 has a front open end that moves up and down in order to facilitate the loading and unloading operations of the cassette. It is attached to the rear area of the tray device 100 by a shaft 331 so as to be movable. The pop-up member 330 is used for the tray device 100.
When the is fully pulled out, the front opening is lifted,
When the tray device 100 is inserted into the housing, it operates so as to be parallel to the tray device 100. In addition, as shown in the figure, the lever 332 of the pop-up member 330,
Since the pin-shaped tip portion 333 is provided symmetrically, the left and right parts are designated by the same reference numerals. In addition, the groove 910
Is also the same. The tip portion 333 of the pop-up member 330 is used as a locking means when the pop-up member 330 is at the retracted position, and also functions as one component of the pop-up operation as described later, and is thus used for various purposes.

Next, comparing the states of FIG. 6 (A) and FIG. 7, it can be seen that the design is as follows. That is, FIG. 6A shows the tray device 100 in the most pulled out state, and FIG. 7 shows the tray device 100 in the deepest inserted state. A rack is provided on the edge of the lower surface of the tray device 100, and gears 23 and 24 mesh with the rack to drive the tray device 100 in the front-rear direction. However, FIG. 6 (A)
In this state, only the gear 23 meshes, and in FIG. 7, only the gear 24 meshes. The gears 23 and 24 are arranged side by side in the tray movement direction, and both gears 23, 24 are interlocked by the intermediate gear 22. It is like this. Arranging the gears 23 and 24 in this way means that the overall length of the tray device 100 in the front-rear direction can be shortened. If one drive gear of the tray device 100 is to be realized,
The total length of the tray device 100 must be longer than that of the embodiment. This is because it is necessary to mesh with one gear in both the states of FIG. 6 (A) and FIG. 7.

As described above, the fact that the total length of the tray device 100 can be shortened not only reduces the weight and reduces the load on the drive device, but also narrows the space in which the tray device 100 projects when the cassette is loaded. Therefore, the occupied space in the periphery can be reduced. Conversely, in other words, even if the total length of the tray device 100 is short, the movement stroke of the tray device can be increased.

FIG. 9 shows the pantograph mechanism 301 as a representative and also shows the pantograph drive mechanism.

Although various embodiments of the pantograph mechanism 301 are possible, this apparatus has a basic configuration of first and second link levers 311 and 312 crossed in a cross shape when viewed from the side. The cross points of the link levers 311 and 312 are connected by a shaft 313, so that the link levers 311 and 312 are separated from each other (ascended state) as shown in FIGS. 9 (A) and 9 (B). State) can be put into the state. Link levers 321 and 31
The front end portions of the No. 1 are the frame 101 of the tray device 100 and the mounting portion 402 of the cassette bottom support plate 401, respectively.
It is rotatably mounted on shafts 102 and 403. The rear end of the link lever 311 has a frame 101
Is engaged with the elongated hole 103 formed in the pin via the pin 104, and the rear end of the link lever 312 is engaged with the elongated hole 405 formed in the mounting portion 404 of the cassette bottom support plate 401 via the pin 406. Has been done. Accordingly, the link mechanism can carry the cassette bottom support plate 401 to the lowered position and the raised position.

Next, a pantograph driving mechanism for driving the pantograph mechanism 301 will be described.

The pantograph drive mechanism comprises a link lever 3
It has a rotary component 501 for pressing the intermediary cam 320, which is rotatably attached to 12, to the downward position direction and pulling it up to the upward position. The intermediary cam 320 is the shaft 3
It is rotatably attached in the middle of the link lever 312 by 21 and moves up and down following the operation of the link lever 312. In this case, the intermediary cam 320 is provided with an engagement pin 322. The engagement pin 322 is attached to the frame 10
1 engages with the holes 121 of the guide plate 120 mounted at intervals. The hole 121 has a groove shape and can have a lock function of locking the ascending position of the pantograph mechanism and a restricting function of restricting the vertical movement locus and the descending position of the pantograph mechanism. That is, the intermediary cam 32
Since the engagement pin 321 of 0 moves while engaging with the hole 121, the locus at the time of vertical movement is restricted, and the lowered position is also positioned at the lower end portion of the hole 121. Further, when the engaging pin 321 rises, the engaging pin 321 engages with the lock portion 121A formed in the hole 121 in a stepped shape, and acts so as not to inadvertently lower the pantograph mechanism.

The guide plate 120 is further provided with a guide groove 122.
However, the guide groove 122 is formed so as to cut out the guide plate 120 at the upper end portion and the lower end portion. And this guide groove 122
The intermediary cam 320 is designed such that the pivoting tip of the intermediary cam 320 is positioned so as to overlap and intersect with the above. Since the guide groove 122 is cut out in the vertical direction, the roller 502 provided at the tip of the rotating component 501 can pass through this groove 122. The roller 502 faces the guide groove 122 from above in the drawing.

The rotary component 501 is rotatably attached by a shaft 503 to a fixed position inside the casing (upper side of the passage of the tray device 100), and its rotary tip is along the guide groove 122. You can go up and down. The state of FIG. 9B is before the operation of the pantograph drive mechanism, and the roller 502 is located above the entrance of the guide groove 122. When there is position detection information from the position detection means of the tray device 100, the rotary component 501 is driven by the drive means (not shown) about the shaft 503 to rotate. Here, when the roller 502 enters the guide groove 122 and abuts on the rotating end of the intermediary cam 320, the intermediary cam 320 pivots slightly clockwise. For this reason, the engagement pin 322 of the intermediary cam 320 is disengaged from the lock portion 121A and the hole 1
21 can be moved downward. Therefore, the rotating component 50
1 continues to rotate and rotates to the state of FIG. 9 (A). Along with this rotation, the cassette bottom support plate 401 supported by the pantograph mechanism descends to dispose the cassette at a predetermined mounting position. At this time, the position of the engagement pin 322 of the intermediary cam 320 is regulated by the hole 121, so that the cassette is also positioned as a result. Further, at this time, the elastic pressing member that rotates together with the shaft 503 of the rotating member 501 presses the left and right central portions of the cassette from above.

FIG. 9A shows a state in which the cassette bottom support plate 401 is lowered, and in order to move from this state to an elevated state, the rotary component 501 is rotated counterclockwise by a driving means (not shown). It Then, since the roller 502 is engaged with the U-shaped recess of the intermediary cam 302, the intermediary cam 30
2 will be raised. Along with this, the link mechanism operates and the cassette bottom support plate 401 rises. Mediation cam 3
20 immediately before the state shown in FIG.
Will press the intermediary cam 320 counterclockwise. Accordingly, the engagement pin 322 of the intermediary cam 320 is
Move to the lock part 121A. Therefore, when the cassette bottom support plate 401 rises and is at the same position as the height of the tray device 100, the link mechanism does not inadvertently move in the descending direction.

In FIG. 9, the pantograph mechanism on the left side as viewed from the opening and the drive mechanism thereof have been described, but the same mechanism is provided on the right side so that the left and right mechanisms operate in synchronization.

Next, the pantograph drive mechanism will be additionally described.

FIG. 10 shows the relationship between the pantograph driving mechanism and the cassette pressing mechanism. The rotating part 501 is
Although it rotates about the shaft 503 as a fulcrum, its power is transmitted by a vertical control cam (not shown) driving a pin 511. The vertical control cam is attached to a side chassis inside the housing and is driven by a vertical motor (not shown).

On the upper surface of the rotary component 501, a cassette pressing component 520 which is rotatable around a shaft 512 as a fulcrum is attached, and its rotary tip projects in a direction in which the distal end of the rotary component 501 is further extended. ing. Cassette retainer parts 5
The base end portion of 20 is engaged with the rotating front end of the control plate 530. A base end portion of the control plate 530 is rotatably instructed by a shaft 531 and the shaft 531 is attached to a fixed position of the chassis inside the housing. The turning tip of the control plate 530 is arranged on the upper surface side of the turning component 501 and has a locking piece 532. The locking piece 532 penetrates into and engages with a hole 513 formed in the rotary component 501.

The above-described mechanism follows the driving of the pantograph mechanism by the rotary component 501 and follows the cassette pressing component 5.
20 rotates about the shaft 512 as a fulcrum, and the roller 522 provided at the tip thereof operates so as to press in the cassette 200 or 300.

FIG. 11 is an explanatory view of the operation of the above mechanism. The figure (A) shows the figure (B) before pressing the cassette.
While the cassette is being pushed in, the figure (C) shows the state where the cassette is completely pushed to the cassette drive position. In this way, as the rotating component 501 rotates, the control plate 53
0 has a rotation fulcrum different from that of the rotation component 501, so that the interval between the rotation tips M of the both increases. Then, the base end portion of the cassette pressing component 520 is rotationally driven relatively clockwise by the tip of the control plate 530 with the shaft 521 as a fulcrum. As a result, the rotation speed of the rotation tip of the cassette pressing component 520 is faster than that of the rotation tip of the rotation component 501, and the cassette is pressed more strongly. The tip of the cassette pressing component 520 is an elastic leaf spring, and a roller 522 for pressing the cassette is provided at the tip.

FIG. 12 shows a pop-up mechanism for facilitating handling of the cassettes 200 and 300 from the outside when the tray device 100 is pulled out from the housing 10.
When the tray device 100 is pulled out from the housing 10, the front cassette 200 and the rear cassette 300 are in a parallel state with their front ends facing upward by the pop-up mechanism. The positional relationship is designed so that the bottom surface of the rear cassette 300 can be slid on the upper surface of the front cassette 200 and inserted into the rear pop-up member 330.

FIG. 12A shows a state in which the cassettes 200 and 300 supported by the front pop-up member 230 and the rear pop-up member 330 are lifted.

First, the front pop-up mechanism will be described.

The pop-up member 230 has a shaft 231 as a fulcrum, and its front pivot end is pivotable in the vertical direction. A supporting portion 232 is formed at the front rotation end, and the supporting portion 232 can lift the bottom portion of the cassette 200. Although not shown, the shaft 231 is attached to the left side plate of the left and right side plates of the cassette bottom support plate. Therefore, as described above, when the cassette bottom support plate 240 is lowered by the pantograph mechanism 201, it can be lowered together with it.

On the inner wall of the frame 101, the frame 10
A slider 260 that can move in the same direction as the moving direction of 1 with respect to the frame 101 is arranged. The slider 260 includes the pin 11 protruding from the inner wall of the frame 101.
The elongated holes 261 and 262 are engaged with 1 and 112. Further, the slider 260 includes the pop-up member 23.
At a position corresponding to 0, there is a notch 264 communicating with the elongated hole 261 and having an inclined portion. The notch 264
Through the through hole, the pin 233 attached to the pop-up member 230 can enter the slot 261. This is because the pop-up member 230 is lowered together with the cassette bottom support plate 240 when it is lowered by the pantograph mechanism, and is necessary when returning to the original position.

When the tray device 100 is inserted into the housing 10, the state shown in FIG. 12 (A) is changed to the state shown in FIG. 12 (B), and then the front cassette 200 is rotated by the pop-up member 230. The movement makes it parallel to the tray device 100. This is because when the tray device 100 further moves to the back from the state of FIG. 12B, the pins 111 and 112 and the pop-up member 230 integrally move rearward with respect to the slider 230 (relatively, the slider 260. This is because the pin 233 hits the corner of the cutout portion 264 and there is no portion to support the pin 233 from below. Then, in this state, the slider 260 also moves rearward together with the frame 101. The pop-up member 230 includes a cutout portion 264 (the long hole 26
1 is continuously released to the L-shaped downward direction), the pivoting tip pivots downward and the cassette 200 is placed on the cassette bottom support plate 240. ..

On the contrary, when the tray device 100 is pulled out from the back, the frame 101 and the slider 26 are used.
0, the pop-up member 230 integrally moves to the front. However, the slider 260
It is locked to a stopper 18 provided at a fixed position inside the housing and does not move forward. So further frame 1
When 01 moves forward, the slider 260 moves relatively rearward, and the pin 233 of the pop-up member 230 is guided by the inclined portion of the cutout portion 264 to enter the elongated hole 261. This operation is performed by the pop-up member 2
This is an operation of directing the rotating tip of 30 upward, and the state shown in FIG. 12 is taken.

Next, the pop-up mechanism for driving the rear pop-up member 330 and its operation will be described.

The pop-up member 330 has an opening into which the cassette 300 can be inserted from the front, and the rear portion has a shaft 33.
It is rotatably supported by 1, and the front part can be vertically rotated. Although not shown, the shaft 331 is attached to the left side plate of the left and right side plates of the cassette bottom support plate. Therefore, when the cassette bottom support plate 401 is lowered by the pantograph mechanism, it can be lowered or raised together with it. In FIG. 12 (A), the pivoting tip of the pop-up member 330 faces upward,
In (B), it is parallel to the cassette bottom support plate. This is because the tip portion 333 of the lever 332 provided at the rear end portion of the pop-up member 330 is rotated by the projecting portion 19 provided at the fixed position. That is,
This is because when the tray device 100 is most pulled out, the pop-up member 330 is rotated clockwise by the protruding portion 19 with the shaft 331 as a fulcrum. Tray device 10
When 0 moves rearward, the tip portion 333 of the lever 332 separates from the protruding portion 19, so that the pop-up member 3
30 is rotated counterclockwise by its own weight or a weak spring and is parallel to the cassette bottom support plate.

Further, the front pop-up mechanism including the pop-up member 230 and the like, and the pop-up member 33.
The operation timing with the rear pop-up mechanism such as 0 is set as follows.

The front pop-up mechanism lifts the front of the cassette 200 at the position of FIG. 12 (B), and the rear pop-up mechanism further pulls out the tray device 100 from the state of FIG. 12 (B). When the state of (A) is reached, the rear pop-up member 330 is lifted. As described above, the operation of the pop-up mechanism is obtained by the guide or collision of the parts when the tray device 100 is moved. This means that the force for lifting the cassette is the same as the motor 21 driving the tray device 100.
It can be understood that it is due to the power of. here,
If the front and rear pop-up mechanisms are operated at the same time, a great load will be applied to the motor 21. Therefore, in this system, the operations of the front and rear pop-up mechanisms are made to have a time difference (the front pop-up mechanism lifts the cassette and then the rear pop-up mechanism lifts the cassette) to reduce the load on the motor 21, It can be driven by a small power motor.

Next, an auxiliary mechanism for the pop-up member 330 will be described.

Left and right pins 341 (seen in FIGS. 1 and 2) are provided on both side plates of the pop-up member 330, respectively. When the tray device 100 moves in the pulling-out direction and the pop-up member 330 faces upward and reaches a predetermined position, the pins 341 can be respectively placed on the resting shelves 61 provided at the fixed positions inside the housing. it can.
This is to maintain the lifted state of the pop-up member 330 in a stable state and prevent the protrusion 19 and the tip portion 333 of the lever 332 from being damaged. That is, as described above, the pop-up member 330 rotates about the shaft 331 as a fulcrum, and when the opening side is lifted, the projecting portion 19 holds the tip portion 333 of the lever 332. However, in this case, an excessive force may be applied to the accommodation side of the cassette 300 when the cassette is accommodated or taken out, so that the pop-up member 330 is attached to the lever 332 and the protruding portion 1.
It may be difficult to maintain the lifted state due to the engagement relationship with 9. Therefore, in this system, the pin 341 rides on the slanted resting shelf portion 61 so that the lifted state of the pop-up member 330 can be stably maintained.

The overall description of this VTR has been given above.

Next, the lid control system in this VTR will be described.

FIG. 13 shows an embodiment of the lid control system. The cam 43, which is shown in FIGS. 1 to 4, is attached to the side plate 31R and the rotational force of the motor 51 is
It is transmitted via a cam 56 and a shaft (not shown in the figure). The left and right cams 43 and 56 rotate in synchronization with each other and transmit the rotational force of the motor 51 to the pantograph drive mechanism (shown in FIG. 10) described above. A cam groove is provided in each of the cams 43 and 56, and a pin of the rotating member 501 is fitted in the cam groove.

Although the cam 43 is shown in FIG. 13, the cam 43 contributes to the pantograph drive and
This is because it also contributes to opening and closing the lid. The cam 43 has a cam groove C2 with which the pin 1101 of the control lever 1100 engages.
Is also formed.

The control lever 1100 is rotatably attached to the side plate 31L by a shaft 1102, and the other rotating end is below an opening 12 (shown in FIGS. 6 and 7) provided in the housing 10. It is extended to the side edge. It is located below the tip of the locking portion 13b protruding inward from the lid 13.
The lid 13 is attached to the opening 12 of the housing 10 by a pin 13a having a shaft center in the left-right direction and has an upper side as a pivot end, so that the opening 12 can be opened and closed.

When the cam 43 rotates in the direction A from the state shown in the drawing, the pin 511L of the rotary component 501 is guided by the cam groove C1. However, since the diameter of the cam groove C1 becomes smaller, the pin 511L becomes It is pulled in the direction of the axis T. As a result, the rotating component 501 rotates about the shaft 503 as a fulcrum,
While holding down the cassette, the pantograph mechanism is driven to lower the bottom plate supporting the cassette (this operation has been described in FIGS. 10 and 11). On the contrary,
The diameter of the cam groove C2 traced by the pin 1101 of the control lever 1100 does not change, and the control lever 1100 does not rotate.

Next, when the cam 43 is rotated in the direction B shown in the figure, the rotary component 501 maintains the position shown in the figure. This is because the diameter of the cam groove C1 does not change even if the cam 43 rotates in the B direction from the state shown in the figure. However, the diameter of the cam groove C2 becomes smaller and approaches the axial center T direction. For this purpose the control lever 110
0 rotates about the shaft 1102 as a fulcrum, and the rotating end contacts the locking portion 13b of the lid 13 to drive the lid 13 in the opening direction. FIG. 14A shows a state in which the rotary component 501 is driven, and FIG. 14B shows a state in which the control lever 1100 is driven and the lid 13 is released.

The lid control system described above is based on the tray device 10.
Power is obtained from a motor other than the motor 21 for driving 0. Therefore, (A1) each of them can be driven with sufficient power, and the tray device can be moved quickly and accurately, and (B1) together with this, it is possible to release the door at a proper timing when opening the door. it can.

This motor is not limited to the motor for driving the pantograph mechanism, but the motor 5
If 1 is used, (C1) more effective use of the power source can be realized. Further, the cam 43 for controlling the control lever does not necessarily have to be the same as the cam for controlling the pantograph mechanism, but by using this cam 43, it is not necessary to provide an independent part, and the (D1) cover The configuration of the power transmission path to the motor becomes simple. Although not shown in the figure, the motors 21 and 51 serving as respective power sources are rotationally controlled by a system control unit having a built-in microcomputer. The release timing can be controlled by the program sequence of the system control unit, the timing can be easily adjusted, and accidents such as collisions with each other can be prevented.

FIG. 15 shows another embodiment of the lid control system.

In this embodiment, a drive lever 1120 is rotatably attached to a pivoting tip of a control lever 1100 by a shaft 1121. The drive lever 1120 is urged by a spring 1122 counterclockwise around the shaft 1121 with respect to the tip of the control lever. Since the drive mechanism of the control lever 1100 is the same as that of the previous embodiment, the same reference numeral as that of the previous embodiment is used. The turning portion of the control lever 1100 is guided by an elongated hole formed in the side plate 31L to stabilize the turning locus. The operation principle of this lid control system is the same as that of the previous embodiment.
6 (A) is a state in which the lid 13 is closed and the rotating component 50
1 shows a rotated state, and FIG. 16 (B) shows a state where the lid 13 is released. In this way, the control lever 110
0 elastically opens the lid 13 via the drive lever 1120.

The reason why the drive lever 1120 is provided is as follows. The VTR may be carried around or operated by a user who is not familiar with handling. For example, when the lid 13 is closed from the closed state as shown in FIG. 16A and the lid 13 is rotated in the direction of being forcedly closed by the external pressure P while the lid 13 is being opened, the drive lever 1120 causes the drive lever 1120 to alternate. Spring 11 as shown in
It is possible to rotate against 22 and obtain a cushioning effect. Conversely, if the lid 13 is pulled in the opening direction,
There is no particular problem, and the spring 13c acting between the shaft 13a and the housing can return to the original position.

Next, in the state where the lid 13 is released as shown in FIG. 16B, even when the external pressure P is applied to the lid 13, the drive lever 1120 obtains a cushioning action as shown by the alternate long and short dash line. It will be. When external pressure is applied in the opposite direction, the lid 13 only elastically rotates in the opening direction against the spring 13c.

As described above, according to this embodiment, the lid 1
Even if external pressure is applied to 3, the safety can be ensured without damaging the (E1) lid 13 or applying unreasonable external pressure to the inside.

FIG. 17 shows another embodiment of the lid control system. This embodiment can also obtain the same effect as the system described above, but is further provided with an abnormality detecting function. The same parts as those in the previous embodiment are designated by the same reference numerals for description.

In the case of this embodiment, the drive lever 1200 is provided so as to overlap the control lever 1100, and the shaft 110
It is rotatably attached to 2. Control bar 110
The 0 rotation tip (on the lid side) is shorter than the rotation tip of the drive lever 1200. A spring 1202 is attached between the pivoting tip of the control lever 1100 and the pivoting tip of the drive lever 1200 such that the springs 1202 are aligned in the direction in which they are overlapped (parallel). The pivoting tip of the drive lever 1200 corresponds to the lower portion of the locking portion 13b of the lid 13.

FIG. 18 is a view showing the principle of the lid control system described above. The same figure (A) shows the state where the lid 13 closes the opening 12, and the same figure (B) shows the state where the opening 12 is opened. Now, assume that when the cam 43 rotates in the direction of arrow B to open the lid 13 from the state of FIG. (A), the external pressure P is applied to the lid 13 in the closing direction. Then, the drive lever 1200 is held in the state shown by the solid line in FIG. 9A, so that only the control lever 1100 rotates under the control of the cam 43 against the spring 1202, as shown by the one-dot chain line. .. In other words, the cushioning effect of the spring 1202 is obtained, and damage to parts and the like is prevented. Next, it is assumed that external pressure P is applied to the lid 13 in the closing direction from the state of FIG. Also in this case, the spring 1202 is buffered, and only the drive lever 1200 rotates as indicated by the alternate long and short dash line. As a result, the cam or the like is not damaged and the cam groove and the pin are not separated from each other.

Furthermore, the cam 43 is provided with a rib 43a and a post 43b for detecting the lid release. Rib 43a
Moves to the position shown in FIG. 2B when the cam 43 rotates to release the lid 13 from the position shown in FIG. However, as described in FIG. (A), when the external pressure P is applied to the lid 13, the drive lever 1200 maintains the initial state even if the cam 43 rotates. In this state, cam 4
A post 1203 is provided at the end on the third side, and is set so as to collide with a rotating rib (shown by 43a 'in the figure). Therefore, the rib 43a 'of the cam 43 and the drive lever 1200 are locked. Then, the cam 43 does not rotate, and the lid release detection post 43b cannot turn on the detection switch 1205 (stops at the position of 43b 'in the figure). Accordingly, the system control unit can determine that the output of the detection switch 1205 is not obtained within a predetermined time after the motor 51 is started to the lid release mode, and the abnormality determination can be performed. Although not shown in the drawing, each motor 21, 51
The control of the rotation direction is performed by the system control unit according to an input command signal from the operation unit. For example, when an eject operation is performed, the motor 2 is used to convey the tray device to the opening side.
1 is turned on, followed by motor 5 to release lid 13.
1 is turned on so as to rotate in a predetermined rotation direction. Then, when the detection signal from the detection switch 1205 is taken into the system control unit within a predetermined time, the motor 51 is turned off.

FIG. 6B shows a state in which the post 43b turns on the detection switch 1205. When the lid 13 is open, the detection switch 1205 is always on. In this state, if the switch 1205 is turned off without controlling the motor 51, it is determined that the system is abnormal. This is to detect that the lid 13 is applied with an external pressure in the closing direction in the state of FIG. When external pressure is applied to the lid 13 in the closing direction,
The drive lever 1200 tries to rotate to the position indicated by the alternate long and short dash line, but at this time, the cam 43 is forcibly returned in the direction of arrow A to push the rib 43a. Therefore, the detection switch 1205, which has been turned on by the post 43b until now, is turned off. This off signal is obtained for the system control unit without controlling the motor 51 (that is, the cam 43), and it is determined that some abnormality has occurred.

In this way, when an abnormality is detected in the state of FIG. 6B or FIG. 6A, the system control unit again controls the rotation of the motor 51 in the direction of releasing the ON cover 13, or A program for controlling the rotation of the lid 13 in the closing direction is built in.

[0079]

According to the present invention described above, first, the respective power sources of the tray device itself are sufficiently independent of the door opening / closing power source. Furthermore, the power for opening and closing the door can be acquired from the power source for the other function control unit, and the power source for the entire device can be effectively used. Further, when the power for opening and closing the door is acquired from the power source for the other function control unit, the power can be efficiently transmitted and the increase in the number of parts can be suppressed. Furthermore, a transmission mechanism that transmits power from a power source to the door and controls opening / closing of the door,
Also, the safety of the door itself can be achieved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention from the left front side.

FIG. 2 is a perspective view showing an embodiment of the present invention from the right front side.

FIG. 3 is a perspective view showing another operation state of the embodiment of the present invention from the right front side.

FIG. 4 is a perspective view showing another operation state of the embodiment of the present invention from the left front side.

FIG. 5 is a perspective view showing a frame used in an embodiment of the present invention.

FIG. 6 is a basic configuration explanatory view showing first and second operation modes of the VTR according to the present invention.

FIG. 7 is a basic configuration explanatory view showing a third operation mode of the VTR.

FIG. 8 is an explanatory view showing a pop-up member fixing mechanism of the VTR.

FIG. 9 is a configuration explanatory view shown for explaining a pantograph mechanism of the VTR and a driving mechanism thereof.

FIG. 10 is a structural explanatory view of a pantograph driving mechanism and a cassette pressing mechanism of the VTR.

FIG. 11 is an operation explanatory view of the pantograph driving mechanism and the cassette pressing mechanism.

FIG. 12 is a diagram shown for explaining the pop-up mechanism of the VTR.

FIG. 13 is a diagram showing a basic configuration example of a lid opening / closing control system of the VTR.

14 is an explanatory diagram of the operation of the system of FIG.

FIG. 15 is a diagram showing another basic configuration example of the VTR lid opening / closing control system.

16 is an explanatory diagram of the operation of the system of FIG.

FIG. 17 is a diagram showing still another basic configuration example of the lid opening / closing control system of the VTR.

FIG. 18 is an operation explanatory diagram of the system of FIG. 17;

[Explanation of symbols]

10 ... Housing, 12 ... Opening, 13 ... Lid, 14 ... Main chassis, 15 ... Rotating head drum, 16 ... Guide member, 1
8 ... Stopper, 19 ... Projection part, 100 ... Tray device,
200, 300 ... Cassette, 201, 301 ... Pantograph mechanism, 230, 330 ... Pop-up member, 24
0, 401 ... Cassette bottom support plate, 332 ... Lever, 2
1, 51 ... Motor, 43 ... Cam, 1100 ... Control lever, 1120, 1200 ... Drive lever

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuzo Tsuchiya 1-9-2 Harara-cho, Fukaya-shi, Saitama Prefecture Fukaya Plant, Toshiba Corp. (72) Inventor Ken Sakabe 3-3 Shinbashi, Minato-ku, Tokyo No. 9 Toshiba Audio / Video Engineering Co., Ltd.

Claims (7)

[Claims] 1. A tray device having a bottom plate on which a cassette can be placed on an upper surface side, and horizontal guide means for guiding the tray device so that the tray device can be inserted and removed in a horizontal front-back direction from a front opening side toward a rear side. In the lower part of the moving path of the tray device inside, there is provided a housing provided with a reel hub of the cassette that is lowered together with the bottom plate from the tray device and a cassette driving unit that drives a tape, and the tray device in the front-back direction. First to move to
A drive source, a door provided with a rotation fulcrum at an edge of the front opening of the housing, and in synchronization with the tray device being drawn out from the inside of the housing through the front opening, A door opening / closing control means for opening the door via a lever to which power is transmitted from a second driving source different from the first driving source, and a door opening / closing mechanism for a tray type cassette loading mechanism. apparatus. 2. A tray device having a bottom plate on which a cassette can be arranged on the upper surface side, and horizontal guide means for guiding the tray device in a horizontal front-back direction from the front opening side toward the back side so that the tray device can be freely inserted and removed. In the lower part of the movement path of the tray device inside, a casing provided with a reel hub of the cassette lowered together with the bottom plate from the tray device and a cassette drive unit for driving the tape, and the tray device in the front-back direction. First to move to
And a bottom plate of a cassette arranged in the tray device when the tray device is moved to a predetermined position of the housing by the drive source and the first drive source. A cassette crimping guide mechanism, a second drive source serving as a drive source for the cassette crimping guide mechanism, a door provided with a pivot point on an edge of the front opening of the housing, and the tray device. A door opening / closing control unit that controls to open the door by switching the power direction of the second drive source in synchronization with being drawn out from the inside of the housing through the front opening. Door opening / closing device for tray type cassette loading mechanism. 3. A tray device having a bottom plate on which a cassette can be placed on the upper surface side, and horizontal guide means for guiding the tray device in a horizontal front-rear direction from the front opening side toward the rear side so that the tray device can be inserted and removed freely. In the lower part of the moving path of the tray device inside, there is provided a housing provided with a reel hub of the cassette that is lowered together with the bottom plate from the tray device and a cassette driving unit that drives a tape, and the tray device in the front-back direction. First to move to
And a guide source for guiding the bottom plate of the cassette arranged in the tray device to the cassette drive part when the tray device is moved to a predetermined position of the housing by the first drive source. A rotary cam capable of controlling and driving a rotary component related to the bottom plate by a first cam groove, a second drive source serving as a drive source of the rotary cam, and a front opening of the housing. The door provided with a rotation fulcrum on the edge and the power direction of the second drive source are switched in synchronization with the tray device being led out from the inside of the housing through the front opening. A door opening / closing device for a tray-type cassette loading mechanism, comprising door opening / closing control means for opening the door via a lever controlled by a second cam groove of a rotary cam. 4. A tray device having a bottom plate on which a cassette can be placed on the upper surface side, and horizontal guide means for guiding the tray device in a horizontal front-rear direction from the front opening side toward the back side so that the tray device can be freely inserted and removed. In the lower part of the moving path of the tray device inside, there is provided a housing provided with a reel hub of the cassette that is lowered together with the bottom plate from the tray device and a cassette driving unit that drives a tape, and the tray device in the front-back direction. First to move to
Drive source, a door provided with a rotation fulcrum at an edge of the front opening of the housing, and opening the front opening by driving the locking portion in a predetermined direction; A control lever in which power is transmitted from a second drive source other than the first drive source to one end side and the other end side is rotated in synchronization with being led out from the inside of the body through the front opening. The control lever is rotatably attached to the other end side, a fixed position is set by a spring, and the pivot end is locked to the locking portion of the door. A door opening / closing device for a tray-type cassette loading mechanism, comprising: a driving lever that elastically drives the locking portion in the predetermined direction against the spring to open the door. 5. A tray device having a bottom plate on the upper surface side of which a cassette can be arranged, and horizontal guide means for guiding the tray device in a horizontal front-rear direction from the front opening side toward the rear side so that the tray device can be inserted and removed. In the lower part of the moving path of the tray device inside, there is provided a casing provided with a cassette hub driving tape and a reel hub of the cassette that is lowered together with the bottom plate from the tray device; First to move to
And a bottom plate of a cassette arranged in the tray device when the tray device is moved to a predetermined position of the housing by the drive source and the first drive source. A cassette crimping guide mechanism, a second drive source serving as a drive source for the cassette crimping guide mechanism, and a pivoting fulcrum provided at an edge of the front opening of the housing, and the locking portion is provided in a predetermined direction. A door that opens the front opening by driving, and the one end side of the control lever that switches the power direction of the second drive source in synchronization with the tray device being pulled out from the inside of the housing through the front opening. A power switching means that is transmitted to the control lever, and a rotatably attached to the other end side of the control lever, a fixed position is set by a spring, and a rotative end is locked to a locking portion of the door, The control lever A tray-type cassette loading mechanism comprising: a drive lever that is driven to elastically drive the locking portion in the predetermined direction against the spring to open the door. Door opening and closing device. 6. A door opening / closing device for a tray type cassette loading mechanism according to claim 5, wherein a spring for biasing the front opening is engaged with the door. 7. The cassette crimping guide mechanism includes a rotating part controlled by a first cam groove of a cam driven by the second power source, and the power switching means is a second part of the cam. The door opening / closing device of the tray type cassette loading mechanism according to claim 5, wherein the control lever is engaged with a cam groove.