JPH07254262A - Door switchgear - Google Patents

Abstract

PURPOSE:To prevent the generation of the displacement of the external shape of an opening-closing door by simple constitution while reducing the cost of an equipment. CONSTITUTION:Positioning ribs 34, 35 are formed to a fan-shaped gear 30 mounted at the end section of a shaft 12, and the fan-shaped gear 30 is installed at the end section of the shaft 12 while a positioning piece 13 protruded at the outer circumferential edge section of an opening-closing door 10 is held by the positioning ribs 34, 35. Consequently, the relative positional relationship of the fan-shaped gear 30 and the opening-closing door 10 is determined univocally by the positioning ribs 34, 35, thus improving the dimensional accuracy of the fan-shaped gear 30 and the opening-closing door 10. A D cut section need not be formed at the end section of the shaft, thus reducing cost. Since no D cut section is formed at the end section of the shaft, the shaft 12 and the hole 33 of the fan-shaped gear 30 need not be aligned, thus conducting the press-fitting operation of the fan-shaped gear 30 to the end secion of the shaft 12 extremely easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening / closing device for opening and closing a recording medium insertion port of a device such as a CD changer.

[0002]

2. Description of the Related Art Generally, an apparatus main body for reproducing a recording medium such as a tape or a disk is provided with an opening / closing door to prevent invasion of dust and the like.

FIG. 1 shows an example of the opening / closing door. A shaft 3 having a D-cut portion 2 is attached by caulking to an outer peripheral edge portion 4 of the opening / closing door 1. A gear 6 having an insertion hole 5 matching the shape of the shaft end portion of the D-cut portion 2 is attached to the shaft 3 by press fitting.

When assembling the opening / closing door 1, after the shaft 3 is crimped on the outer peripheral edge portion 4 side of the opening / closing door 1, a D-cut portion 2 is formed in the shaft 3 and an insertion hole 5 for the gear 6 is formed in this portion. Press fit.

[0005]

However, as described above, when the shaft 3 is attached by caulking on the outer peripheral edge portion 4 side of the opening / closing door 1, the outer shape of the opening / closing door 1 and the shaft 3 are fixed.
There was a problem that the dimensional accuracy with the D cut portion 2 was not good. That is, for example, it is desirable that the relative positional relationship between the surface of the D-cut portion 2 and the predetermined position of the opening / closing door 1 is always constant regardless of which opening / closing door is assembled. This is because the relative positional relationship is slightly deviated.

Moreover, since the D-cut portion 2 is formed on the shaft 3, there is a problem that the cost is increased. Further, the work of press-fitting the insertion hole 5 of the gear 6 in the D-cut portion 2 of the shaft 3 in a aligned state is extremely difficult.

When the gear 6 is press-fitted and the shaft 3 is slightly displaced from the D-cut portion 2 and the insertion hole 5 of the gear 6, as described above, the D-cut portion 2 is inserted.
There is also a problem that the relative positional relationship between the surface of the open / close door and the predetermined position of the open / close door 1 is displaced, and the outer shape of the open / close door 1 is increased.

The present invention has been made in view of the above circumstances, and provides a door opening / closing device capable of reducing the cost of equipment while preventing the occurrence of a deviation in the outer shape of the opening / closing door with a simple structure. The purpose is to

[0009]

In order to achieve the above object, the present invention is a door opening and closing device for opening and closing a recording medium insertion opening formed in a panel of a device body by a door which is openably and closably arranged. A shaft attached by caulking to the outer peripheral edge of the door, and a positioning rib mounted on the end of the shaft and holding the outer peripheral edge of the door for relative positioning with the door. And a gear having.

[0010]

In the door opening / closing apparatus of the present invention, the gear mounted on the end of the shaft is provided with a positioning rib, and when the gear is mounted on the end of the shaft, the positioning rib holds the outer peripheral edge of the door. Therefore, the relative positional relationship between the gear and the door is uniquely determined by the positioning rib, so that the dimensional accuracy of the gear and the door is improved.

Further, as in the conventional case, D is attached to the end of the shaft.
Since it is not necessary to form the cut portion, the cost can be reduced. Further, since the D-cut portion is not formed at the end of the shaft, the shaft and the gear hole do not need to be aligned with each other, so that the work of press-fitting the gear into the end of the shaft can be performed very easily.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. 2 to 4 show an embodiment of the door opening / closing device of the present invention. As shown in the figure, the shaft 12 is crimped on the upper end 11 side of the opening / closing door 10.

Positioning pieces 13 and 14 are provided at both ends of the opening / closing door 10 so as to project therefrom. Further, at the lower end portion side of the opening / closing door 10, for example, a C described later for accommodating a plurality of CDs.
A contact piece 15 that contacts the side surface of the D magazine 40 is provided.

The opening / closing door 10 is arranged in the state shown in FIG. That is, in the insertion opening 21 of the device body 20,
Two opening / closing doors 10 are arranged so as to be openable / closable in a double door open state so as to close the insertion opening 21. Device body 2
On the right side plate 22 of 0, the one end 12a side of the shaft 12 of each opening / closing door 10 is rotatably supported. The other end 12b side of the shaft 12 is rotatably supported on the left side plate 23 side of the device body 20.

One end 1 of the shaft 12 of each opening / closing door 10
The one end 16a side of the spring 16 interposed on the 2a side is engaged with the positioning piece 13 of each opening / closing door 10, and the other end 16
The side b is engaged with the opening edge side of the insertion port 21 of the device body 20.

As a result, the opening / closing doors 10 are urged by the elastic force of the spring 16 toward the side that closes the insertion opening 21.

As shown in FIG.
And the fan-shaped gear 30 shown in FIG. 7 is attached. However, the fan-shaped gear 30 shown in FIGS. 6 and 7 is arranged in the lower stage of FIG. 8 described later. The fan-shaped gear 30 shown in these figures is similar in shape to the one arranged in the upper part of FIG. 8, but the location of positioning ribs 34, 35 described later is different.

That is, the gear body 32 of the fan-shaped gear 30 is formed with a hole 33 into which the one end 12a of the shaft 12 is press-fitted. The opening / closing door 1 is provided on one side of the gear body 32.
Positioning ribs 34, 35 for holding the positioning piece 13 of 0
Is projected. By holding the positioning piece 13 between the positioning ribs 34 and 35, the opening / closing door 1
The relative position between 0 and the fan-shaped gear 30 is uniquely determined. The gear portion 3 is provided on the curved side of the gear body 32.
6 is provided.

The transmission gears 31, 31 interposed between the respective fan-shaped gears 30 are rotatably attached to the right side plate 22 via a support member 32. Since the rotation of the shaped gear 30 is synchronized, the opening / closing operations of the respective opening / closing doors 10 are simultaneously performed.

Next, the operation of the door opening / closing device having such a structure will be described with reference to FIG. First, in a state where the insertion opening 21 of the device body 20 is closed by the opening / closing door 10, after the CD magazine 40 is positioned in front of the opening / closing door 10 as shown in FIG. The tip portion is pressed against each opening / closing door 10, and the CD magazine 40 is pushed in in this state.

By the pushing force of the CD magazine 40, the upper opening / closing door 10 is pushed upward against the biasing force of the spring 16, and the lower opening / closing door 10 is pushed downward against the biasing force of the spring 16. . When the front end of the CD magazine 40 is pushed in by a predetermined amount, the contact piece 15 of the opening / closing door 10 contacts the side surface of the CD magazine 40, and the door opening / closing 10 is opened.

Further, in this state, the insertion of the CD magazine 40 into the insertion opening 21 is detected by a detection switch or sensor (not shown) provided in the vicinity of the insertion opening 21 of the apparatus body 20, and the loading mechanism (not shown) is used. CD
The magazine 40 is pulled into the device body 20.

At this time, the transmission gears 31, 31 interposed between the respective fan-shaped gears 30 cause the respective fan-shaped gears 30 to move.
Since the rotation of the doors is synchronized, the opening and closing doors 10 are rotated at the same timing.

When the CD magazine 40 is completely pushed into the main body 20 of the device, as shown in FIG.
Since the contact piece 15 of each opening / closing door 10 contacts the side surface of the CD magazine 40, the insertion opening 21 is opened.
It becomes easy to confirm whether or not the magazine 40 is mounted.

On the other hand, when an eject button (not shown) is operated, a loading mechanism (not shown) pushes out the CD magazine 40 from the inside of the apparatus main body 20. CD magazine 4
0 is pushed out from the inside of the device body 20 by a predetermined amount, and then a CD
When the magazine 40 is pulled out, the side surface of the CD magazine 40 separates from the abutting piece 15 of each opening / closing door 10, so that each opening / closing door 10 is pushed back to the closing side by the urging force of the spring 16, and the insertion opening 21 is closed. It

At this time, as described above, the rotation of each fan-shaped gear 30 is synchronized by the transmission gear 31 interposed between each fan-shaped gear 30, so that each opening / closing door 1 is closed.
The rotation of 0 is performed at the same timing. Further, since the positioning piece 13 of each opening / closing door 10 is sandwiched between the positioning ribs 34, 35 of the fan-shaped gear 30, the relative position of the opening / closing door 10 and the fan-shaped gear 30 does not change. The closed state and the open state of the insertion opening 21 by 10 are appropriately maintained.

Thus, in this embodiment, the shaft 12
The positioning rib 3 is attached to the fan-shaped gear 30 mounted on the end of the
4, 35 are provided, the fan-shaped gear 30 is attached to the end portion of the shaft 12, and the positioning ribs 34, 35 hold the positioning piece 13 protruding from the outer peripheral edge portion of the opening / closing door 10. , Fan-shaped gear 30 and opening / closing door 10
Since the relative positional relationship between the fan-shaped gear 30 and the opening / closing door 10 is uniquely determined by the positioning ribs 34 and 35, the dimensional accuracy of the fan-shaped gear 30 and the opening / closing door 10 is improved.

Further, as in the conventional case, D is attached to the end of the shaft.
Since it is not necessary to form the cut portion, the cost can be reduced. Further, since the D-cut portion is not formed at the end of the shaft, the shaft 12 and the hole 3 of the fan-shaped gear 30 are not formed.
Since it is not necessary to position the fan-shaped gear 30 on the end portion of the shaft 12, it is extremely easy to press the fan-shaped gear 30 into the end portion of the shaft 12.

In this embodiment, an example in which the door opening / closing device of the present invention is applied to the case where two opening / closing doors 10 are arranged so as to be openable / closable in a double door open state, is not limited to this example. It may be applied to the case where one opening / closing door 10 can be opened and closed.

[0030]

As described above, according to the door opening / closing device of the present invention, when the gear mounted on the end of the shaft is provided with the positioning rib, and the gear is mounted on the end of the shaft,
Since the outer peripheral edge portion of the door is held by the positioning rib, the relative positional relationship between the gear and the door is uniquely determined by the positioning rib, so that the dimensional accuracy of the gear and the door is improved.

Further, as in the conventional case, D is attached to the end of the shaft.
Since it is not necessary to form the cut portion, the cost can be reduced. Further, since the D-cut portion is not formed at the end of the shaft, the shaft and the gear hole do not need to be aligned with each other, so that the work of press-fitting the gear into the end of the shaft can be performed very easily. Therefore, it is possible to prevent the deviation of the outer shape of the opening / closing door with a simple structure and reduce the cost of the device.

[Brief description of drawings]

FIG. 1 is a perspective view showing an opening / closing door for closing a conventional insertion opening of a device body.

FIG. 2 is a perspective view showing an opening / closing door according to the door opening / closing device of the present invention.

FIG. 3 is a front view showing the opening / closing door of FIG.

FIG. 4 is a plan view showing the opening / closing door of FIG.

FIG. 5 is a view showing a state of arrangement of the opening / closing door of FIG.

FIG. 6 is a front view showing the fan gear of FIG.

7 is a cross-sectional view showing the fan gear of FIG.

FIG. 8 is a diagram for explaining an opening / closing operation of the opening / closing door of FIG.

[Explanation of symbols]

 12 shaft 10 opening / closing door 13,14 positioning piece 15 abutting piece 16 spring 20 device body 21 insertion port 30 fan-shaped gear 32 gear body 34, 35 positioning rib

Claims (1)

[Claims] 1. A door opening / closing device that opens and closes a recording medium insertion opening formed in a panel of an apparatus body by a door that is openably and closably provided, the shaft being attached by caulking to an outer peripheral edge portion of the door. A door opening / closing device, comprising: a gear having a positioning rib that is mounted on an end portion of the shaft, holds an outer peripheral edge portion of the door, and positions the door relative to the door. .