JP3661455B2 - Open / close door device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an opening / closing door device for inserting and discharging a recording medium such as a tape or a disk in the fields of audio, video, information equipment and the like.
[0002]
[Prior art]
FIG. 4 shows the structure of a conventional opening / closing door device, in which 11 is a rotating shaft, 12 is a door, 13 is a winding spring, 14 is a panel, 15 is a bearing portion, and 16 is a shaft pressing member.
[0003]
The rotating shaft 11 penetrates the curled portion 12 a and the winding spring 13 of the door 12, is engaged with the bearing portion 15 of the panel 14, and is held by the shaft pressing member 16.
[0004]
[Problems to be solved by the invention]
In this open / close door device, it is required to improve the assemblability and to smoothly open and close the door.
[0005]
However, in the conventional opening and closing door device, the rotating shaft and the door are separate members, so that the assembling method becomes complicated and there is a problem that the assembling property is deteriorated.
[0006]
It is an object of the present invention to simplify the assembly and smoothly open and close the door.
[0007]
[Means for Solving the Problems]
In order to solve this problem, the present invention has a configuration in which the rotating shaft, the blade, and the spring hook are integrally formed, and the rotating shaft is sandwiched between the U-shaped bearing portion of the panel and the shaft pressing member.
[0008]
As a result, an opening / closing door device that is easy to assemble and that can smoothly open and close the door is obtained.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a rotating shaft provided on both sides of a plane portion constituted by a plane perpendicular to the mating surface of the mold with the rotation center between the rotation center and the outer diameter. A spring hook portion provided at a predetermined interval from the rotation center of the rotary shaft, a rotary door integrally formed with the rotary shaft and the spring hook portion at one end of a flat plate-like door portion, and the rotary door A coil spring that urges the rotary blade in a vertical direction, a U-shaped bearing that engages with the rotary shaft of the rotary blade, and a spring hook that engages the coil spring. And an opening / closing door device characterized in that the opening / closing door device comprises a panel holding member and a shaft pressing member having a convex portion for holding the rotation shaft of the rotating door with the U-shaped bearing of the panel. The shaft and the door are integrally molded. It has the effect that the assembling property can be simplified.
[0010]
The invention according to claim 2 is the open / close door device according to claim 1, wherein the tip of the convex portion of the shaft pressing member is semicircular, and the door is smoothly opened and closed. Has an effect.
[0011]
Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3.
(Embodiment 1)
FIG. 1 is a block diagram of an opening / closing door device according to an embodiment of the present invention. In FIG. 1, 1 is a door, 2 is a winding spring, 3 is a panel, 4 is a bearing portion, and 5 is a shaft pressing member.
[0012]
The door 1 is integrally formed with the rotating shaft 1a and the spring hook 1b, and the rotating shaft 1a is held between the U-shaped bearing 4 and the shaft pressing member 5 of the panel 3. Further, the winding spring 2 is engaged with the door 1 and the panel 3, and always urges the door 1 in the vertical direction. When a cassette or disk cartridge (hereinafter referred to as a cartridge) is ejected from the interior of the set, the door 1 is pushed up by the cartridge and rotates around the rotary shaft 1a. When the cartridge is removed from the set, the door 1 is returned to the original position again by the urging force of the winding spring 2. The same operation is performed when the cartridge is inserted into the set.
[0013]
2 and 3 are sectional views of the bearing portion of the opening / closing door device according to the embodiment of the present invention. FIG. 2 shows a state where the door 1 is not rotating, and FIG. 3 shows the door 1. Is being pushed up by the cartridge 6 and rotating.
[0014]
The rotating shaft 1a generally has a D-cut surface (hereinafter referred to as a D-cut surface) perpendicular to the mold-matching surface 1c because of misalignment and burrs in the die-matching portion, that is, the concave-convex matching portion due to the mold configuration 1d is provided at two positions above and below the center point of the rotation shaft. As shown in FIG. 3, when the blade 1 rotates, the D-cut surface 1 d comes into contact with the convex portion 5 a of the shaft pressing member 5. At this time, if the tip shape of the convex portion 5 a is a flat surface, D The cut surface 1d and the convex portion 5a come into surface contact, and the frictional resistance of the contact portion becomes larger than the urging force of the winding spring 2, so that the back 1 cannot return to the original position even when the cartridge 6 is not present. There is a possibility that. Therefore, as shown in FIG. 3, by making the tip shape of the convex portion 5a of the shaft pressing member 5 into a semicircular shape, the D-cut surface 1d and the convex portion 5a can be used regardless of the rotational movement of the door 1. Since the point contact is made, the contact resistance can be reduced, and if the cartridge 6 is not present, the original state can always be restored.
[0015]
In the above description, the example in which the tip of the convex portion of the shaft pressing member is configured in a semicircular shape has been described. However, in order to make the mold creation easier, the tip of the convex portion is viewed from a semicircular cross section. The present invention can also be implemented in the same manner even if it is constituted by a rib or a corner-treated rib.
[0016]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain an advantageous effect that the opening / closing operation of the door can be obtained easily and smoothly.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an opening / closing door device according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a bearing portion of the opening / closing door device according to an embodiment of the invention. Sectional drawing which shows the bearing part of the opening-and-closing door apparatus by the form of FIG. 4 FIG. 4 The block diagram which shows the conventional opening-and-closing door apparatus
DESCRIPTION OF SYMBOLS 1 Tobira 1a Rotating shaft 1b Spring hook part 1c Mold matching surface 1d D cut surface 2 Winding spring 3 Panel 4 Bearing part 5 Shaft pressing member 5a Convex part 6 Cartridge

Claims (2)

A rotating shaft provided on both sides with a plane center composed of a plane perpendicular to the mating surface of the mold, with the center of rotation sandwiched between the center of rotation and the outer diameter,
A spring hook provided at a predetermined interval from the rotation center of the rotation shaft;
A rotating door in which the rotating shaft and the spring hook are integrally formed at one end of a flat-shaped door portion;
A winding spring that is engaged with a spring hook portion of the rotary blade and urges the rotary blade in a vertical direction;
A panel having a U-shaped bearing portion that engages with a rotation shaft of the rotary blade and a spring hook portion that engages the winding spring;
An opening / closing door device comprising a shaft pressing member having a convex portion for sandwiching a rotating shaft of the rotating door together with a U-shaped bearing of the panel. The opening / closing door device according to claim 1, wherein the tip of the convex portion of the shaft pressing member has a semicircular shape.

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