JPH09282758A - Door opening and closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a door from being forcibly opened up from its closing state and to attain a stable opening and closing operation of the door and reduction of the cost. SOLUTION: The device is constituted for opening and closing a passing opening in such equipment that a moving member of a tray, etc., is drawn out of this passing opening formed in a front panel of its case. In this constitution, a door opening and closing arm 17 is turned up and down by a slider 22 which moves back and forth, and a door slider 13 is moved up and down by turning the door opening and closing arm 17 up and down, so that the door is directly opened and closed by moving the door slider 13 up and down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel door opening / closing device. Specifically, in a door opening and closing device for a door that opens and closes the passage opening in a device in which a moving member such as a tray is drawn out from the passage opening formed on the front surface of the housing, the door is not forcibly opened from a closed state. In addition, the present invention relates to a technique for stable opening / closing operation of a door and cost reduction.

[0002]

2. Description of the Related Art In a device in which a moving member such as a tray is pulled out from a passage opening formed in a front surface of a casing, for example, an optical disk player, the passage opening is opened after the moving member is pulled into the casing. If left as it is, foreign matter may enter the housing from there and various inconveniences may occur. Therefore, a door for opening and closing the passage opening is usually provided.

As such a door opening / closing device, there are a device for opening and closing the passage opening by moving the door in the vertical direction, a device for opening the door toward the front with its lower end as a fulcrum, and the like.

In the case of vertically moving the door, guides for supporting and guiding both left and right ends of the door are provided on the housing side, and the driving force is applied only when the opening operation is performed, and the closing operation is performed by the spring force. It is supposed to be done.

There are also those which rotate the door with the lower end as a fulcrum,
The driving force is applied only when the opening operation is performed, and the closing operation is performed by the spring force.

[0006]

In any of the door opening / closing devices described above, the closing operation is performed by the spring force, and the spring force acts to maintain the closed state in the closed state. When opening the door, a force that overcomes the spring force is required in addition to the driving force according to the weight of the door, and there is a problem that a large driving force is required during the opening operation.

Since the closed state of the door is maintained only by the spring force, the door can be forcibly opened, and the tray can be pulled in while the door is open. If an operation such as an optical disk playback operation starts in that state, various inconveniences will occur. To avoid such a situation, measures such as providing a switch for detecting the open / closed state of the door It was necessary to take measures to increase costs.

Further, in the case of moving the door vertically, only the spring force works when the door is closed, and therefore, when the left and right balance of the spring force is lost, the door tilts obliquely and the guide part. There is a fear that a so-called "kojiri" will occur between them. Therefore, in order to prevent the occurrence of the twisting, it is necessary to provide a synchronizing means such as a link gear for adjusting the phase of the left and right movements of the door, which causes a high cost.

Therefore, an object of the present invention is to prevent the door from being forcibly opened from the closed state, and to achieve a stable opening / closing operation of the door and a reduction in cost.

[0010]

In order to solve the above-mentioned problems, a door opening / closing device of the present invention is provided with a driving member for opening / closing the door, and a driving force by the driving member is applied during opening and closing operations. The door is driven directly.

Therefore, according to the door opening / closing device of the present invention, the driving force of the driving member directly drives the door during the opening operation and the closing operation, so that the door is not forcibly opened during the closing operation. It does not require extra force to open and close the door,
Moreover, there is no need for means for synchronizing the left and right movements of the door.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the door opening / closing device of the present invention will be described below with reference to the illustrated embodiments. In the illustrated embodiment, the present invention is applied to a door opening / closing device in an optical disc player.

A front panel 1 is provided on the front surface of a casing (not shown) of the optical disk player, and a horizontally long passage opening 2 is formed in the front panel 1. Also,
A liquid crystal display panel 3, various operation buttons 4, 4, ... Are arranged on the front surface of the front panel 1.

Frames 6 and 6'extending in the front-rear direction are erected on both left and right sides of a chassis 5 fixed to the bottom of the housing.

Two frames are provided at the front ends of the frames 6 and 6 '.
Inverted L-shaped guide grooves 7, 7 ', 8, 8'are formed successively. These guide grooves 7, 7 ', 8, 8'
Are vertical portions 7a, 7'a, 8 extending in the vertical direction, respectively.
a, 8'a and a horizontal portion 7 horizontally extending rearward from the vertical portion
b, 7'b, 8b, 8'b.

Door support plates 10 and 10 'are attached to both ends of a door 9 which opens and closes the passage opening 2 of the front panel 1. The door support plates 10 and 10 'are on the outside, that is, on the right side (in the case of indicating the left and right directions, the left and right in a state of facing the front of the optical disk player). Driven shafts 11 and 1 that project to the right, and to the left for the left side 10 '.
1 ', 12, 12' are provided. The driven shafts 11, 11 ', 12, 12' are slidably engaged with the guide grooves 7, 7 ', 8, 8'.

Door sliders 13 and 13 'are provided so as to be vertically movable with respect to the frames 6 and 6'. The door sliders 13, 13 'are formed with drive grooves 14, 14', 15, 15 'which are inclined rearward and downward. The door sliders 13, 13 'are located inside the frames 6, 6', and the driven shafts 11, 11 ', 12, 12' are also slidable in the drive grooves 14, 14 ', 15, 15'. Is engaged with. And the door sliders 13 and 13 '
Are moved in the vertical direction by a drive mechanism described later.

The door sliders 13 and 13 'are moved in the vertical direction so that the door 9 is opened.
Is opened and closed, and its operation will be described below.

3 and 5 show the door 9 in a closed position in which the passage opening 2 is closed, and the door slider 1 is shown.
3, 13 'are located at the upper limit of the moving range. At this time, the driven shafts 11, 11 ', 12, 12' have guide grooves 7,
The horizontal portions 7b, 7'b, 8b, 8'b of 7 ', 8, 8'are located at the rear ends of the horizontal portions 7', 8, 8 ', and the drive grooves 14, 14', 1
As for 5, 15 ', they are located at the lowest end.

When the door sliders 13, 13 'descend from the state shown in FIGS. 3 and 5, the driven shafts 11, 1 are driven.
Since 1 ', 12, 12' are located in the horizontal portions 7b, 7'b, 8b, 8'b of the guide grooves 7, 7 ', 8, 8', they cannot move downward and the door Sliders 13, 1
It is pushed forward by the upper edges of the drive grooves 14, 14 ', 15, 15' of 3'and moved forward, so that the door 9 projects forward from the closed position. And the driven shaft 1
1, 11 ', 12, 12' are horizontal portions 7b, 7'b, 8
The position where the front end of b and 8'b is reached is the protruding position where the door 9 is projected most forward (see FIG. 6). At this time, the driven shafts 11, 11 ', 12, 12' have the drive grooves 14, 14 ', 1
It is located near the top of 5, 15 '.

The door slider 1 is further changed from the state shown in FIG.
When 3, 13 'descends, the driven shafts 11, 11',
12, 12 'are pressed by the side edges of the drive grooves 14, 14', 15, 15 'to lower the vertical portions 7a, 7'a, 8a, 8'a of the guide grooves 7, 7', 8, 8 '. Go to (see Figure 7).

When the door sliders 13, 13 'reach the lowermost end of their moving range, the driven shafts 11, 11',
Reference numerals 12, 12 'denote the vertical portions 7a, 7'a, 8a, 8'a.
Of the door, and at this time, the door reaches the lowered position, whereby the passage opening 2 is opened (see FIG. 8).

With the door 9 in the lowered position, the slide tray 16 is put out from the passage opening 2 (see FIG. 9).

The vertical movement of the door sliders 13 and 13 'is performed by the door opening / closing arms 17 and 17'. The pair of left and right door opening / closing arms 17 and 17 'are in the shape of an elongated triangle in the front-rear direction, and the rear end portions of the rear end portions near the upper ends are individually located at positions near the front ends of the frames 6 and 6'. It is rotatably supported.

Further, a semi-arcuate pressed projection 18 is provided on the rear end of the door opening / closing arms 17, 17 'near the lower end.
18 'is provided in a protruding manner, and further, engagement slits 19 and 19' which are long in the front-rear direction are formed at the front end portion. And
Coil springs 20 and 20 'are stretched between a substantially middle portion of the door opening / closing arms 17 and 17' and a portion near the upper edges of the front portions of the frames 6 and 6 '. The door opening / closing arms 17 and 17 'are urged by a turning force in the direction in which the front ends thereof move upward.

The engaging pins 21, 21 'projecting from the upper ends of the door sliders 13, 13' are slidable in the engaging slits 19, 19 'of the door opening / closing arms 17, 17'. Engaged. Therefore, the door opening / closing arm 17,
When 17 'rotates, the engaging pins 21, 21' are pushed upward or downward by the edges of the engaging slits 19, 19 ', whereby the door sliders 13, 13' are rotated.
Will move up or down.

A pair of left and right sliders 22 and 22 'are individually supported by the frames 6 and 6'to be movable in the front-rear direction. The drive groove 2 is provided on the sliders 22 and 22 '.
3, 23, 23 ', 23' are formed, and the drive grooves 23, 23, 23 ', 23' are inclined portions 23a, 23a, 23'a, 23 'extending downward and backward at an inclination of about 45 degrees.
a and these inclined portions 23a, 23a, 23'a, 23'a
Horizontal portions 23 that extend continuously in the horizontal direction at the upper and lower ends of the
b, 23b, 23c, 23c, 23'b, 23'b, 2
3'c and 23'c.

Further, inverted L-shaped arm driving grooves 24, 24 'are formed at the front ends of the sliders 22, 22'. The arm drive grooves 24, 24 'are horizontal portions 24a, 24'a extending horizontally and the horizontal portions 24a, 24'a.
Vertical portions 24b, 24'b extending vertically downward from the front end of the
Consisting of The engagement pins 21, 21 'of the door opening / closing arms 17, 17' are slidably engaged with the arm drive grooves 24, 24 '.

The sliders 22 and 22 'slide in the front and rear directions to open and close the door opening and closing arms 17 and 1.
7'rotates vertically.

That is, when the door 9 is in the closed position, as shown in FIGS. 3 and 5, the engaging pins 21, 21 'of the door opening / closing arms 17, 17' are engaged with the arm drive grooves of the sliders 22, 22 '. The vertical portions 24b and 24'b of 24 and 24 'are engaged with positions near the upper ends.

The slider 2 is moved from the position shown in FIGS.
When the doors 22 and 22 'move rearward, the door opening / closing arms 17 and 1
The engaging pins 21 and 21 'of 7'are the arm drive grooves 24 and 2
The front edges of the vertical portions 24b, 24'b of the 4'are pushed rearward, whereby the door opening / closing arms 17, 17 'are pivoted so that their tips move downward (FIGS. 6 and 7).
reference). In this way, when the door opening / closing arms 17 and 17 'rotate to the lowermost end of the rotation range (see FIG. 8), the door 9 reaches the lowered position and the passage opening 2 is opened.

The movement of the door 9 from the lowered position to the closed position is
The sliders 22 and 22 'are moved forward, and the engagement pins 21 and 21' of the door opening / closing arms 17 and 17 'are moved to the arm drive groove 2.
4, 24 'vertical parts 24b, 24'b are pushed forward by the trailing edges of the vertical parts 24b, 24'b, whereby the door opening / closing arms 17, 17' are pushed.
Is rotated so that its tip moves upward.

The movement of the sliders 22 and 22 'in the front-rear direction is performed by the rotation of the control gear 25. The control gear 25 faces the right side frame 6
It is rotatably supported by the motor and is rotated by a motor (not shown). A cam groove 26 is formed in the control gear 25, and the cam groove 2
A driven pin 27 protrudingly provided on the slider 22 on the right side toward 6 is slidably engaged.

The cam groove 26 has a center portion unchanged portion 26a extending in a semicircular shape around the center of rotation about the center of rotation about 180 degrees, and a clockwise end as viewed from the right side of the unchanged portion 26a. And a change portion 26b that extends toward the peripheral portion while curving in the clockwise direction.
It is composed of a peripheral unchanged portion 26c which is continuous with the clockwise end of b and which extends in a circular arc shape from there around in the clockwise direction with the center of rotation as the center.

Thus, when the door 9 is in the closed position, the driven pin 27 of the slider 22 is moved to the cam groove 2 described above.
6 is engaged with a substantially middle portion of the changing portion 26b (FIG. 3).
reference). Then, when the door 9 is opened, the control gear 25 rotates clockwise as viewed from the right. And
When the control gear 25 rotates clockwise, the engagement position of the driven pin 27 with the changing portion 26b shifts toward the center, and as a result, the driven pin 27 is moved.
Will be pulled backwards, so slide 22
Will be moved backwards. And driven pin 2
When the engagement position of the cam groove 7 with the cam groove 26 reaches the connecting portion between the changing portion 26b and the central unchanging portion 26a, the door 9 reaches the lowered position (see FIG. 4).

The control gear 25 is the slider 2
It is involved in various controls other than the drive of 2.
From the position where the door 9 reaches the lowered position to the time when the driven pin 27 of the slider 22 reaches the counterclockwise direction end of the center unchanged portion 26a, while further rotating clockwise, the slide tray 16 Are projected from the passage opening 2.

Although only the right slider 22 is directly moved by the rotation of the control gear 25, the left slider 22 'is moved in synchronization with the right slider 22 by the synchronizing means.

The synchronizing means is composed of racks 28, 28 'and link gears 29 formed on the upper edges of the sliders 22, 22' in front of them. The link gear 29 includes a synchronous shaft 29a and pinions 29b and 29'b fixed to positions near both ends of the synchronous shaft 29a.
Both ends of 9a are rotatably supported by the frames 6 and 6 ', and the pinion 29b is a rack 28 of the slider 22.
And the pinion 29'b is engaged with the slider 22.
It is meshed with the rack 28 'of'.

When the slider 22 moves in the front-rear direction, the rack 28 rotates the link gear 29, and the pinion 29'b sends the rack 28 ', and the left slider 22' moves to the right slider. It will move forward and backward in synchronization with 22.

The horizontal portions 24a and 24'a are formed in the arm drive grooves 24 and 24 'of the sliders 22 and 22', respectively, because the sliders 22 and 22 'move forward after the door is closed. Is used for other operations of the optical disc player. That is, when the door is closed, the sliders 22 and 22 'move forward, so that the trailing edges of the vertical portions 24b and 24'b of the arm drive grooves 24 and 24' are moved to the door opening and closing arms 17 and 17 '. Pressed protrusions 18, 18 'of
To push the door forward, so that the door opening / closing arm 1
7, 17 'are pivoted so that their tips move upwards, which causes the door sliders 13, 13' to move upwards and the door 9 to move towards the closed position. Then, when the sliders 22 and 22 'further move forward from the state where the door 9 reaches the closed position shown in FIG. 5, the door opening / closing arms 17 and 17' pivot slightly upward from the position shown in FIG. Then, the positions of the pressed projections 18, 18 'are moved slightly upward to move the arm drive grooves 24, 24'.
The height corresponds to the front ends of the horizontal portions 24a and 24'a. Therefore, even if the sliders 22 and 22 'move further forward, the pressed projections 18 of the door opening / closing arms 17 and 17',
18 ′ only moves relatively rearward in the horizontal portions 24 a, 24 ′, the door opening / closing arms 17, 17 ′ do not rotate up and down, and therefore the sliders 22, 22 ′.
The forward movement from the position shown in FIG. 5 can be used for other operations.

Next, a modified example will be described with reference to FIG. In this modification, the door 9 is prevented from easily opening when an external force forcibly opening the door 9 is applied to the door 9 in the closed position.

That is, in the door opening / closing device described above, the door 9
Is in the closed position (see FIGS. 3 and 5), when a force forcibly opening the door 9, that is, a force pulling it forward is applied, the force is applied to the driven shafts 11, 11, 1
It is added to the front edges of the drive grooves 14, 14 ', 15, 15' of the door sliders 13, 13 'via 1', 11 '. Since the front edge is inclined, the force acts so as to push down the door sliders 13 and 13 ', which causes the door sliders 13 and 13' to descend, and
The door 9 moves toward the protruding position. When the door 9 is in the closed position, for example, during reproduction of an optical disk, it is extremely inconvenient to open the door 9 at such a time, which causes various troubles. .

Therefore, in this modification, the drive grooves 14, 14 ', 15, 15' of the door sliders 13, 13 'are provided.
And a lock portion 14 extending vertically downward continuously from its lower end.
a, 14'a, 15a, 15'a are formed.

Therefore, in the operation of closing the door 9,
When the door 9 reaches the closed position, that is, the driven shaft 11,
11, 11 'and 11' are drive grooves 14, 14 ', 15 and 1
Door slider 1 from the position at the bottom of 5 '
3, 13 'are designed to move slightly upward. As a result, the driven shafts 11, 11, 11 ', 11' engage with the lock portions 14a, 14'a, 15a, 15'a.

Therefore, in this modification, even if a force for pulling the door 9 forward is applied to the door 9, the force is applied vertically through the driven shafts 11, 11, 11 ', 11'. The extending lock portions 14a, 14'a, 15a, 1
5'a is the front edge, from which the door sliders 13, 1
There is no moment to move 3'downward, so the door sliders 13 and 13 'are lowered and the door 9
There is no possibility that the will move to the protruding position.

In the door opening / closing apparatus of the present invention described above, the vertical movement of the door opening / closing arms 17 and 17 ', which are the driving members, causes the opening / closing operation of the door 9 through the door sliders 13 and 13'. Since it is directly specified, the door 9 is not forcibly opened from the closed state, and there is no need for means for synchronizing the left and right movements of the door 9, and the door 9 is closed and opened. The driving force is almost the same at all times.

The door opening / closing arms 17 and 17 'are associated with coil springs 20 and 20' for rotating the arms upward, which are different from the state shown in FIG.
When 2'moves further forward, the pressed projections 18, 1
8'to ensure that the arm drive grooves 24, 24 'of the horizontal portion 24
This is for allowing the door opening / closing arms 17, 17 'to rotate upward until the height corresponding to a, 24'a is reached, and does not cause a great load when the door 9 is opened.

[0048]

As is apparent from the above description, the door opening / closing device of the present invention is a door for opening / closing the passage opening in a device in which a moving member such as a tray is pulled out from the passage opening formed in the front surface of the housing. The door opening / closing device is provided with a driving member for driving the door to open / close, and the driving force of the driving member directly drives the door during opening and closing operations.

Therefore, in the door opening / closing device of the present invention, the driving force of the driving member directly drives the door during the opening operation and the closing operation, so that the door is not forcibly opened at the time of closing, and It does not require extra force to open and close the door,
Moreover, there is no need for means for synchronizing the left and right movements of the door.

It should be noted that the specific shapes and structures of the respective parts shown in the above-mentioned embodiments are merely examples of the embodiment when the present invention is carried out, and the technical form of the present invention can be realized by these. The range should not be construed as limiting.

[Brief description of drawings]

FIG. 1 shows an embodiment of the door opening / closing device of the present invention together with FIGS. 2 to 9, and is a schematic exploded perspective view of the whole.

FIG. 2 is a schematic exploded perspective view of a main part.

FIG. 3 is a partially cutaway enlarged side view showing a main part in a state where the door is in the closed position.

FIG. 4 is a partially cutaway enlarged side view showing a main part in a state in which a door is in a lowered position.

FIG. 5 is a partially cutaway enlarged side view of the main part showing the operation together with FIGS. 6 to 9, and this figure shows a state in which the door is in the closed position.

FIG. 6 shows a state in which the door is in a protruding position.

FIG. 7 shows a state in which the door is at an intermediate position between the protruding position and the descending position.

FIG. 8 shows a state in which the door is in the lowered position.

FIG. 9 shows a state in which a slide tray projects from a passage opening.

FIG. 10 is a partially cutaway enlarged side view of a main part showing a modified example in a state where the door is in the closed position.

[Explanation of symbols]

2 ... passing opening, 16 ... slide tray (moving member), 1
7, 17 '... Door opening / closing arm, 22, 22' ... Slider

Claims (2)

[Claims] 1. A door opening / closing device for opening and closing a passage opening in a device in which a moving member such as a tray is drawn out from a passage opening formed in a front surface of a housing, and comprising a drive member for driving the door to open and close. A door opening / closing device, wherein the driving force of the driving member directly drives the door during both opening and closing operations. 2. The driving member is a pair of left and right door opening / closing arms, and a pair of left and right sliders for moving the door opening / closing arms that move in the front-rear direction is provided. Door opening and closing device.