JPH08167205A - Door structure for cassette inserting port - Google Patents

Abstract

PURPOSE: To prevent noise in a drive device from leaking out to the outside by making the door structure a double structure consisting of a turning door and a slide door without damaging an operability. CONSTITUTION: When a motor 36 is rotated, pinions 33 and 34 are rotated via rotation transmitting parts 41 and 42, and the slide door 2 is slidden downward from its closing state, and when it comes into a cassette inserting port opening position, light between a light emitting part 16a and a light receiving part 16b of a photointerruptor 16 is interrupted by a photointerrupting plate 23 to stop the motor 36. Then, the turning door is opened in accordance with inserting a cassette into the cassette inserting port, and is automatically closed upon completion of the insertion. When the cassette is loaded, the motor 36 is turned on and is reversely rotated, so that the slide door 2 is slidden upward by the pinions 33 and 34, and when the door 2 is brought into a cassette inserting port closing position, the light between the light emitting part 17a and the light receiving part 17b is interrupted by the photointerrupting plate 23 to stop the motor 36. Thus, by double closing the cassette inserting port by the turning door and the slide door, noise is prevented from being leaked out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door structure for opening and closing a cassette insertion opening of a drive device such as a VTR or a data recorder.

[0002]

2. Description of the Related Art As a door structure of a drive device such as a VTR or a data recorder, there is known a door structure using a rotating door or a sliding door.

As shown in FIG. 7, a door structure using a revolving door is constructed by pivotally supporting an upper end of the revolving door 101 on an upper portion of a cassette insertion opening 104 of a front panel 103 by a pivot shaft 102. Has been done.

When the cassette 105 is inserted through the cassette insertion port 104, the rotary door 101 is pressed by the cassette 105.

The rotating door 1 pressed by the cassette 105
01 rotates about the pivot shaft 102 to open the cassette insertion port 104.

From the cassette insertion port 104 to the cassette 1
When 05 is completely inserted into the drive device and the pressing of the rotary door 101 by the cassette 105 is released, the rotary door 101 is rotated and returned by its own weight or the like to automatically open the cassette insertion opening 104. It is designed to be blocked.

Further, in the door structure using the slide door, as shown in FIG. 8, the slide door 106 is attached to the back surface of the front panel 103 having the cassette insertion opening 104 so as to be slidable in the upward and downward directions. It is composed by.

The slide door 106 is driven by a slide door driving device (not shown).

Then, by the above slide door drive device,
When the slide door 106 is moved down to the cassette insertion opening opening position, the cassette insertion opening 104 is opened, and when it is moved up from the cassette insertion opening opening position to the cassette insertion opening closed position, the set insertion opening 104 is opened. Is closed by the slide door 106.

[0010]

The conventional door structure described above has the following problems.

(1) The door structure using the swing door 101 is
When the cassette 105 is inserted / removed, it is pressed by the cassette 105, and is automatically rotated to open.
Although it has the advantage of being excellent in operability because it automatically closes after the insertion and removal of the device, the rotating door 101 may easily open even during recording and reproduction, and dust and the like may enter.

(2) In the door structure using the slide door 106, the slide door is not opened unless the slide door is slid by the slide door drive device, and therefore the rotary door 1 is used.
01, there is no risk that dust or the like will enter the slide door 106, but when inserting the cassette 105, first operate the slide door drive device to move the slide door 106 downward. It is necessary to insert the cassette 105 after opening the cassette insertion port 104. Therefore, it takes time until the cassette insertion opening 104 is fully opened, and the operability is poorer than that of the swing door 101. (When the drive device is not used, the cassette insertion opening 104 is closed by a slide door 106 in order to prevent intrusion of dust and the like, and the slide door 106 is lowered when the drive device is used, that is, when the cassette 105 is inserted. It is a normal use method to open the cassette insertion port 104 by moving it.) (3) Both the door structure using the rotating door 101 and the door structure using the sliding door are single door (single door) structures. Therefore, the effect of blocking noise generated in the device is small.

The present invention has been made for the purpose of solving the above conventional problems.

[0014]

According to a first aspect of the present invention, there is provided a slide door slidably attached to a front panel of a drive device, and the slide door is provided between a cassette insertion opening opening position and a cassette insertion opening closing position. A slide door driving device that slides and rotates by being pressed by the cassette when the cassette is inserted and removed to open the cassette insertion opening, and automatically returns to rotate when the pressing by the cassette is released and closes the cassette insertion opening The door and the door structure of the cassette insertion port were constructed.

According to a second aspect of the present invention, in the cassette insertion port door structure according to the first aspect, the slide door is arranged in front of the rotary door, that is, in the front in the cassette insertion direction.

According to a third aspect of the present invention, in the cassette insertion port door structure according to the first or second aspect, a rack provided on the slide door, and a pinion provided on the front panel in a state of being meshed with the rack, A slide door drive device is configured with a motor that rotates the pinion via a rotation transmission member.

[0017]

In the door structure according to the first aspect, when the slide door is slid to the cassette insertion opening opening position by the slide door driving device, the closing of the cassette insertion opening by the slide door is released.

When the cassette is inserted, it is pressed by the cassette and the pivot door pivots to open the cassette insertion opening.
It is inserted in the drive device.

The rotary door released from the pressing force of the cassette automatically returns to the rotary position to close the cassette insertion port.

When the slide door is slid to the cassette insertion port closing position by the slide door driving device, the cassette insertion port is in a double closed state by both the rotating door and the slide door.

Recording / reproduction is performed in this state. Record
After the reproduction is completed, the slide door is slid to the cassette insertion opening opening position by the slide door driving device.

When the cassette is unloaded, the rotary door is pressed and rotated by the cassette to open the cassette insertion port.

When the cassette is taken out, the rotary door released from the pressing force of the cassette automatically returns to rotate and closes the cassette insertion port.

In the door structure according to the second aspect of the present invention, since the slide door is arranged in front of the rotary door (forward in the cassette insertion direction), the slide door can be easily mounted after the rotary door is assembled. Can be assembled. Also, it is possible to easily confirm the opening and closing of the slide door.

According to the door structure of claim 3, when the motor is rotated in the normal direction (or reverse direction) while the slide door is positioned at the cassette insertion opening opening position, the pinion moves in one direction via the rotation transmission member. The slide door is moved to the cassette insertion port closing position by the rack that is rotated to the right and is engaged with the pinion.

Further, when the motor is rotated in the reverse direction (or forward direction) while the slide door is located at the cassette insertion port closing position, the pinion rotates in the other direction, and the slide door moves to the cassette insertion port opening position. To do.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to FIGS. FIG. 1 is a plan view of a main part of the door structure of the present invention, FIG. 2 is a front view, and FIG. 3 is a rear view.

The door structure of the present invention includes a slide door 2 slidably attached to a front panel 1 of a drive device such as a VTR or a data recorder, and a slide insertion opening position and a cassette insertion port closing position of the slide door 2. And a slide door drive device 3 that slides between them, and is rotated by being pressed by the cassette when the cassette is inserted and removed to open the cassette insertion opening provided in the front panel 1 and automatically rotated when the pressing by the cassette is released. It is composed of a rotary door (not shown) that returns to close the cassette insertion port.

Next, the front panel 1 will be described.

As shown in FIG. 4, the front panel 1
Is formed in a rectangular shape and has a cassette insertion opening 11 in the upper half portion, and one side of the cassette insertion opening 11 has first and second slide doors for attaching a slide door. The support pins 12 and 13 are provided, and the third and fourth slide door support pins 14 and 15 are provided on the other side portions.

Further, the front panel 1 has a light emitting portion 16a and a light receiving portion 16b for detecting that the slide door 2, which will be described in detail below, is at the cassette insertion opening open position.
A first light-blocking photo interrupter 16 including
Then, a second light blocking type photo interrupter 17 including a light emitting part 17a and a light receiving part 17b for detecting that the slide door 2 is at (closed) the cassette insertion port closed position is provided on the back side.

Next, the slide door 2 will be described.

As shown in FIGS. 5 and 6, the slide door 2 is formed in a rectangular shape and has first and second elongated holes 21 and 22 for slide guides on both left and right sides. However, inside the first and second elongated holes 21 and 22, in parallel with the elongated holes 21 and 22, the first and second racks 31 and 31 that constitute the slide door driving device 3 described later in detail. 32, and near the lower end of the second rack 32, the light emitting portions 16a and 17a and the light receiving portions 16b and 1 of the first and second light blocking type photo interrupters 16 and 17 are provided.
It has a light shielding plate 23 which penetrates between 7b.

As shown in FIG. 2, the slide door 2
Are the first and second slide door support pins 12 and 13 and the third and fourth slide door support pins provided on the front panel 1 in the first long hole 21 and the second long hole 22, respectively. 14 and 15 are inserted, and the retaining rings 18 are attached to the tips of the first to fourth slide door support pins 12 to 15, respectively.
Is attached to the front panel 1 so as to be slidable.

When the slide door 2 is slid upwards to the maximum extent, the first and second elongated holes 21,
The lower end of 22 is the second and fourth provided on the front panel 1.
The slide door 2 is stopped at the cassette insertion port closing position by contacting the slide door support pins 13 and 15 (solid line in FIG. 2).

In this state, the light shielding plate 23 provided on the slide door 2 is the second light shielding plate provided on the front panel 1.
Of the photo interrupter 17 and the light receiving portion 17
The detection light emitted from the light emitting portion 17a that has entered between b and b is blocked, and it is detected that the slide door 2 is at (closed) the cassette insertion port closing position.

Further, when the slide door 2 is slid downward to the maximum from the state where the slide door 2 is in the cassette insertion port closing position, as shown by the chain double-dashed line in FIG. The upper ends of the second slots 21 and 22 come into contact with the first and third slide door support pins 12 and 14 provided on the front panel 1, and the slide door 2 is stopped at the cassette insertion opening opening position. .

In this state, the light shielding plate 23 provided on the slide door 2 is the first light shielding plate provided on the front panel 1.
Of the photo interrupter 16 and the light receiving portion 16
The detection light emitted from the light-emitting portion 16a that has entered between b and b is blocked, and it is detected that the slide door 2 is (is) at the cassette insertion opening opening position.

Next, the slide door driving device 3 will be described.

As shown in FIG. 2, the slide door driving device 3 includes first and second racks 31 and 32 provided on both left and right sides of the slide door 2 and the first and second racks 3 respectively.
First and second pinions 33, 3 meshing with 1, 32
4 and a motor 36 that rotates these first and second pinions 33 and 34 via a rotation transmission mechanism 35.

The first and second pinions 33 and 34 are
The rotation transmission mechanism 35 and the motor 3 arranged on the front surface side of the front panel 1 and on the rear surface (rear surface) side.
It is adapted to be rotationally driven by 6.

The rotation transmission mechanism 35 transmits the rotation of the motor 36 to the first pinion 33.
1 and the rotation of the first pinion 33 to the second pinion 34
And a second rotation transmitting portion 42 that transmits the

As shown in FIG. 1, the first rotation transmitting portion 41 rotatably supports the rotation shaft 51 of the first pinion 33 on the back side of the front panel 1. Of the pinion support 52, and the first pinion 3 disposed in the first pinion support 52.
The first V belt pulley 53 attached to the rotating shaft 51 of No. 3, the V belt 54 whose one end side is hung on the first V belt pulley 53, and the other end side of the V belt 54 is hung. A second V-belt pulley 55, a support shaft 56 that rotatably supports the second V-belt pulley 55 on the back side of the front panel 1, and a rotatably attached to the support shaft 56. It is composed of a first gear 57 that rotates integrally with the second V-belt pulley 53, and a worm gear 58 that is attached to the rotating shaft of the motor 26 while being meshed with the first gear 57. There is.

When the first rotation transmitting portion 41 rotates the motor 36, the worm gear 58,
First gear 57, support shaft 56, second V-belt pulley 5
5, the first pinion 33 is rotated via the V-belt 54 and the first V-belt pulley 53.

The second rotation transmission section 42 includes a first timing belt pulley 61 attached to the rotation shaft 51 of the first pinion 33 in the first pinion support 52, and the front panel. A second pinion support 63 that rotatably supports the rotation shaft 62 of the second pinion 34 on the back side of the first pinion 34, and the second pinion support 63 is disposed in the second pinion support 63 and The second gear 64 attached to the rotating shaft 62 of the second pinion 34 and the second gear 64 in the state of being meshed with the second gear 64.
The third gear 65 rotatably mounted in the pinion support 63, the second timing belt pulley 67 mounted on the rotation shaft 66 of the third gear 65, and the first and second It is composed of a timing belt 68 hung on the timing belt pulleys 61 and 67.

Then, the second rotation transmitting portion 42 controls the rotation of the first pinion 33 by the first timing belt pulley 61, the timing belt 68, the second timing belt pulley 67, the third gear 65, It is transmitted to the second pinion 34 via the second gear 64, and
The pinion 33 and the second pinion 34 are rotated in synchronization with each other.

The upper end of the rotary door (not shown) is rotatably supported above the cassette insertion opening 11 of the front panel 1 by a pivot shaft and hangs down by its own weight. The cassette insertion port 11 is closed.

When the cassette is inserted or removed, the rotary door is pressed and rotated by the cassette to open the cassette insertion opening, and when the cassette is completely inserted and removed, the pressing is released by the cassette. The pivot door is adapted to pivot and return by its own weight to automatically close the cassette insertion opening.

The cassette insertion port door structure of the embodiment has the above-described structure.

Therefore, as shown in FIG. 2, the sliding door 2
Is in the cassette insertion port closing position, the cassette insertion port 11 is closed by the slide door 2.

In this state, when a switch (not shown) of the motor 36 is turned on to rotate the motor 36 in one direction, the first pinion 33 is passed through the first rotation transmission section 41.
Rotates counterclockwise and the second rotation transmission part 4
2 through the second pinion 34 to the first pinion 3
3 rotates clockwise in synchronism with 3, and the sliding door 2 slides downward due to the rotation of the first and second pinions 33 and 34. When the slide door 2 comes to the cassette insertion opening open position, the light shielding plate 23 enters between the light emitting portion 16a and the light receiving portion 16b of the first photo interrupter 16 and the detection light emitted from the light emitting portion 16a. Is shut off, and it is detected that the slide door 2 has reached the cassette insertion opening opening position, and the drive of the motor 36 is stopped.

Then, from the cassette insertion port 11 to VT
When a cassette such as an R or a data cassette is inserted, the swing door (not shown) is pushed by the cassette to swing and open,
When the cassette passes, the pivot door automatically returns by pivoting to its closed state.

When the cassette is loaded, the motor 36 is turned on, and the motor 36 reversely rotates to slide the slide door 2 upward by the first and second pinions 33 and 34.

When the slide door 2 comes to the cassette insertion port closing position, the light shielding plate 23 provided on the slide door 2
Detecting that the slide door 2 has reached the cassette insertion port closing position by penetrating between the light emitting portion 17a and the light receiving portion 17b of the second photo interrupter 17 and blocking the detection light emitted from the light emitting portion 17a. Then, the drive of the motor 36 is stopped.

Therefore, the cassette insertion slot 1 of the drive device
1 is in a state in which the rotary door and the slide door are doubly closed, and recording / reproduction is performed in this state.

When recording / playback is completed and the eject button is pressed, the motor 36 is switched on and the motor 3
In step 6, the first pinion 33 is rotated counterclockwise and the second pinion 34 is rotated clockwise to open the slide door 2. Then, the cassette sent out from the drive device is first sent out from the cassette insertion opening 11 provided in the front panel 1 after the rotary door is pushed to open it from the inside.

When the cassette is removed from the cassette insertion port 11, the rotary door released from the pressing force of the cassette automatically returns to rotate by its own weight, and the cassette insertion port is closed to intrude dust or the like. Prevent.

Therefore, even after the cassette is taken out, the slide door is kept stopped at the cassette insertion opening opening position, and when it is used next time, the cassette insertion opening is closed like the conventional slide door. Save the time loss and labor of having to insert the cassette after moving the slide door at the position to the cassette insertion port opening position,
The effect is that the cassette can be loaded quickly.

Although the embodiment has shown the case where the first and second racks are arranged on both the left and right sides of the slide door, one rack is arranged in the center of the slide door and It is also possible to provide a pinion that meshes with the central portion of the front panel and rotate the pinion with a motor via a rotation transmission mechanism.

Although the embodiment has shown the door structure of a tape cassette such as a VTR or a data cassette, the door structure of the present invention can also be applied to a disk cassette door structure.

[0061]

The door structure of the cassette insertion port of the present invention has the following effects.

(1) Since the door structure of the cassette insertion port of claim 1 has a double structure of the rotating door and the sliding door, it is possible to reliably prevent the noise in the drive device from leaking to the outside. .

Further, since the dust and the like can be prevented from entering by closing the rotary door, the slide door can be left open after the cassette is unloaded, and the slide door can be used next time. The trouble of opening the cassette can be eliminated and the cassette can be quickly loaded.

(2) In the cassette insertion port door structure according to the second aspect, since the slide door is arranged in front of the rotary door, the presence of the rotary door is an obstacle when the slide door is assembled to the front panel. Therefore, the slide door can be easily assembled. Further, the open / closed state of the slide door can be easily visually confirmed (confirmed) from the outside.

(3) In the cassette insertion port door structure according to claim 3, the slide door driving device comprises a rack, a pinion meshing with the rack, and a motor for rotating the pinion via a rotation transmission mechanism. Therefore, by rotating the motor forward or backward, the slide door can be easily and surely moved between the cassette insertion opening opening position and the cassette insertion opening closing position.

[Brief description of drawings]

FIG. 1 is a plan view of a main part.

FIG. 2 is a front view of a main part.

FIG. 3 is a rear view of the main part.

FIG. 4 is a plan view of a slide door.

FIG. 5 is a front view of a slide door.

FIG. 6 is a front view of a slide door support plate.

FIG. 7 is a sectional view of a conventional example.

FIG. 8 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Front panel 2 ... Slide door 3 ... Slide door drive device 11 ... Cassette insertion port 31, 32 ... First and second racks 33, 34 ... First and second pinion 35 ... Rotation transmission mechanism

Claims (3)

[Claims] 1. A slide door slidably attached to a front panel of a drive device, a slide door drive device for sliding the slide door between a cassette insertion port opening position and a cassette insertion port closing position, and a cassette door insertion / removal unit. A cassette insertion characterized by comprising a rotary door which is rotated by being pressed by the cassette to open the cassette insertion opening and which is automatically returned to rotate when the pressing by the cassette is released to close the cassette insertion opening. Mouth door structure. 2. The door structure for a cassette insertion opening according to claim 1, wherein the slide door is arranged in front of the rotary door in the cassette insertion direction. 3. The slide door drive device according to claim 1 or 2, wherein a rack provided on the slide door, a pinion provided on the front panel in a state of being meshed with the rack, and a rotation transmission mechanism for transmitting the pinion. A door structure for a cassette insertion opening, characterized in that it is configured with a motor that rotates through a door.