JPH08312231A - Door rotation structure - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to prevent a damage of a door of a housing such as an information processing device from being opened too much. A hinge 3 provided between a housing 1 and a door 2 for pivotally engaging and pivotally engaging the door 2, and a hinge 3 attached around the hinge 3 so that the door 2 exceeds a certain opening degree. When it is opened, the inclined surface 4 rides on each other to release the engagement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for rotating a door of a case such as an information processing device. A door of a case such as an information processing device is provided with a hinge between the door and the housing to open / close the door. If the door exceeds a certain opening angle and opens too much, there is a drawback that the hinge portion is likely to be damaged, and a countermeasure against it is demanded.

[0002]

2. Description of the Related Art As shown in FIGS. 9 (a) and 9 (b), an external perspective view of the apparatus and a sectional view taken along the line DD of FIG.
Both of them are made of synthetic resin, and are composed of a hinge 120 integrally molded between the housing 100 and the door 110 so as to engage with each other in a concavo-convex manner. Note that FIG. 9 (b) shows only the upper hinge.

The hinge 120 is a hinge pin 120a integrally projecting vertically above and below the side edge of the door 110 inside each arm 110a extending at a right angle to the door surface so as to face each other, and the hinge pin 120a. And a pin hole 100a formed at the top and bottom of the housing opening so as to rotatably pivot and support. The door 110 is normally opened and closed at a constant opening angle of about 120 degrees around the upper and lower hinges 120 as shown by the chain double-dashed line in FIG. 9 (a).

[0004]

However, according to such a door rotating structure as described above, there is no problem when the door is opened to a constant regular opening, but when the door is opened beyond the limit, the side of the door is opened. There is a problem that the end interferes with (abuts on) the side surface of the housing, and a large force is applied to the hinge by using the lever as a fulcrum, and the hinge pin is broken or the pin hole is damaged.

In view of the above problems, it is an object of the present invention to provide a door rotating structure capable of preventing damage due to excessive opening of the door.

[0006]

In order to achieve the above object, in a door rotating structure according to the present invention, the door is provided between a housing and the door so that the door is pivotally engaged. And a slanted surface that is attached around the hinge and that, when a certain opening of the door is exceeded, rides on each other to release the engagement.

[0007]

[Function] Between the door and the housing, a hinge that is pivotally engaged with each other up to a certain opening and rotates normally is provided with a slope that rides on each other and releases the engagement when the opening exceeds a certain opening. As a result, if the door is opened beyond a certain opening, it will be disengaged before it interferes with the housing, the hinge function will disappear and the door will be disengaged from the housing, so the hinge will be overloaded. It is possible to prevent the hinge from being broken or damaged.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The gist of the present invention will be described in detail below with reference to the embodiments shown in the drawings. The pivoting structure of the door of the first embodiment is as shown in FIG. 1 (a) and FIG. 1 (b), which is an assembly plan view and a sectional view taken along line AA of FIG. Both are made of synthetic resin, and the hinges 3 are integrally molded between the housing 1 and the door 2 so as to engage with each other in a concavo-convex manner.

The hinge 3 is integrally formed with a hinge pin 3a projecting above and below the side edge of the door 2 so as to face each other inside each of the arms 2a projecting at right angles to the door surface in an L-shape, and the hinge pin 3a. And a pin hole 3b formed at the top and bottom of the housing opening so as to be pivotally supported and supported rotatably.

Further, in the first embodiment of the present invention, the slope 4 which rides on each other around the hinge between the housing 1 and the upper and lower arms 2a [the slope on the door side in FIG. 1 (a) is a right upward slope] Part, the slope on the housing side includes a pair of protrusions 5 each having a leftward slanting line portion].

The slope 4 of each of the pair of protrusions 5 has a fan shape starting from the position where the door 2 is opened 90 degrees and having a rotation angle of 30 degrees, and is provided with a flat portion 4a following the slope 4 and having a rotation angle of 30 degrees. . When the door 2 opens at an angle of rotation of 120 degrees, the slopes 4 of each other
To reach the flat portion 4a.

The height H of each flat portion 4a (see FIG. 1 (b)) is set so that the hinge pin 3a can be pulled out from the pin hole 3b and the door 2 can be removed from the housing 1 when the flat portions 4a go up the slope 4 with respect to each other. The door 2 is attached to the housing 1 by pushing the upper and lower arms 2a and expanding the hinge pin 3a.
Perform by fitting in b.

With this structure, the door normally opens and closes smoothly around the hinge up to a rotation angle of 120 degrees where the slopes overlap each other. However, if the opening of the door exceeds the limit of 120 degrees and opens too much, the protrusions ride on each other while rubbing against each other's slope, elastically deforming the upper and lower arms 2a facing each other as shown in the cross-sectional view of the main part of FIG. In order to push it apart (the upper arm is shown in the figure), the force of opening the door 2 causes frictional resistance on the slope, and when the slope rises and reaches the flat portion 4a, the hinge pin 3a slips out of the pin hole 3b, and the door is opened. 2 can be removed from the housing 1.

Therefore, since the hinge function is lost before the side edge of the door is opened too much and the side edge of the door hits the side surface of the housing, the hinge pin is broken without damaging the hinge pin or the pin hole is damaged. Can be prevented.

Next, a sectional view of the main part assembly side of FIG. 4 shows a second embodiment. In the second embodiment, the upper and lower hinges 3-1, 3 are provided.
-2 in the same direction is different from the first embodiment in which the hinges are vertically symmetrical. That is, the lower hinge 3-2 is configured to match the orientation of the upper hinge 3-1.
Of course, the direction may be reversed.

Then, the projection 5 having the inclined surface 4 around the hinge is formed by integral molding as in the first embodiment. The door 2 is fitted into the housing 1 by dropping the upper and lower hinge pins 3a into the pin holes 3b from above.

With this structure, the door is the first
Like the embodiment, it is normally opened and closed up to 120 degrees. When the opening of the door exceeds 120 degrees, the protrusions ride on the opposite slopes, and the door is lifted upward. then,
Since the upper and lower hinges are formed in the same direction, the upper and lower arms do not elastically deform as in the first embodiment.

When the projection goes up the mating slope, the hinge pin comes out of the pin hole and the door comes out of the housing.
The same operation and effect as the first embodiment are achieved. Further, since there is no elastic deformation of the arm, the frictional resistance of the hinge is smaller than that of the first embodiment, and there is an advantage that abrasion of the hinge can be reduced.

The following is a third embodiment of the main part assembly plan view of FIGS. 5 (a) and 5 (b) and its BB sectional view, and the main part exploded perspective view of FIG. The third embodiment is a modification in which the hinge of the first embodiment and a beveled projection formed around the hinge are combined. That is, the hinge 3 of the third embodiment is
A part of a circular ring integrally formed on the opposing surfaces of the upper and lower arms 2a of the door 2 (a rotation angle of 130 degrees obtained by adding a flat portion 4a having a rotation angle of 10 degrees described below to a normal opening rotation angle of 120 degrees) An arcuate hinge pin 3a formed by cutting out, and an annular pin hole 3b for pivotally attaching the arcuate hinge pin 3a.
It consists of and.

Further, the ring-shaped pin hole 3b and the arc-shaped hinge pin 3a have the same functions as those of the first embodiment, and the slopes 4 and 4-1 are mounted on each other (at a rotation angle of 30 degrees, the door 2
The slope 4 on the side is a slope portion rising to the right, the slope 4-1 on the side of the housing 1
Is a diagonally upward-sloping portion), and the slope 4-1 on the side of the annular pin hole 3b has a rotation angle 1 following the slope 4-1.
The flat portion 4a of 0 degree is provided so as to fill a part of the annular pin hole 3b.

The height of the arc-shaped hinge pin 3a is related to the annular pin hole 3b when the door 2 is opened and the slopes 4 cross the slope 4-1 and reach the flat portion 4a. Set the dimensions so that they do not match.

With such a construction, the door is usually a total of 12 rotation angles of 90 ° when the arc-shaped hinge pin is fitted in the ring-shaped pin hole and 30 rotation angles where the slopes overlap each other.
Engage 0 degrees to open and close. Open the door too much and open 12
If you open it up to the flat part where it goes up the slope and goes over 0 degrees,
Since the hinge pin comes out of the pin hole, it is possible to prevent the hinge from being damaged as in the first embodiment. Further, the arcuate hinge pin of the third embodiment has an advantage that the strength against breakage can be increased because the cross-sectional area can be made larger than that of the pin shape of the first embodiment.

In the above description of the third embodiment, the hinge pin is removed by riding on the slopes provided on one circular ring, but a double circular ring is provided with another sloped face symmetrically to the arm. Can be spread evenly. Further, similarly to the second embodiment, the upper and lower hinges may be arranged in the same direction up and down, and the door may be lifted up by riding on the slopes to remove the hinge pin.

The following is a fourth embodiment of the main part assembly plan view and the CC sectional view of FIG. 7 (a) and (b) and the main part exploded perspective view of FIG. 8, respectively. The fourth embodiment is a modification of the hinge of the third embodiment. That is, the hinge 3 of the fourth embodiment is
The door 2 includes a disk-shaped hinge pin 3a integrally formed on the opposing surfaces of the upper and lower arms 2a, and a circular pin hole 3b for pivotally pivoting the hinge pin 3a. This disk-shaped hinge pin 3a is fanned out at a rotation angle of 130 degrees on the outer peripheral part, and a slope 4 which rides on each other between the end part and the circular pin hole 3b [on the door 2 side in FIG. 7 (a)]. The slanted surface has a slanting line rising to the right, and the slanting surface on the housing 1 side has a slanting surface rising to the left].
It is provided with a flat portion 4a.

With this structure, the door is rotated by engaging the disc-shaped hinge pin in the circular pin hole and engaging the rotation angle of 90 degrees and the rotation angle of 30 degrees where the slopes overlap each other for a total of 120 degrees. Open and close dynamically. Further, if the door is opened too much and the slopes of the door are crossed over 120 degrees to open up to the flat portion, the hinge pin comes out of the pin hole, so that the hinge can be prevented from being broken as in the above embodiments.

Further, since the disc-shaped hinge pin of the fourth embodiment can have a larger cross-sectional area than the circular arc shape of the third embodiment, there is an advantage that the strength against breakage can be further increased.

As described above, in the door rotating structure of each of the above-described embodiments, both the housing and the door, both of which are made of synthetic resin, engage with each other up to the normal opening degree of the door. Since the hinge is integrally molded into the door, the door can be normally rotated and opened up to a certain opening, and the hinge is attached to the hinge when the door is opened beyond the certain opening. Since the hinge function is released and the door can be detached from the housing before the door interferes with the housing and the hinge is overloaded, the hinge can be prevented from being damaged or damaged.

[0028]

As described in detail above, according to the present invention,
It has an extremely useful effect in the industry that it can prevent the hinge from being damaged by opening the door too much.

[Brief description of drawings]

FIG. 1 is an assembly plan view of essential parts of a first embodiment according to the present invention and a sectional view taken along the line AA of FIG.

FIG. 2 is an exploded perspective view of essential parts in the first embodiment.

FIG. 3 is a cross-sectional view of an essential part of an upper hinge showing a state in which a mating slope in the first embodiment has been fully raised.

FIG. 4 is a side sectional view of a main part assembly of a second embodiment according to the present invention.

FIG. 5 is a plan view of an essential part of a third embodiment of the present invention and a cross-sectional view taken along line BB thereof.

FIG. 6 is an exploded perspective view of essential parts in the third embodiment.

FIG. 7 is an assembly plan view of a main part of a fourth embodiment according to the present invention and a sectional view taken along the line CC.

FIG. 8 is an exploded perspective view of essential parts in a fourth embodiment.

FIG. 9 is an external perspective view of a device according to the prior art and its D.
-D cross section

[Explanation of symbols]

 1 Case 2 Door 3 Hinge 3a Hinge Pin 3b Pin Hole 4 Slope

Claims (3)

[Claims] 1. A hinge provided between a housing and a door to pivotally engage the door, and a hinge attached around the hinge to open the door beyond a certain opening. A door rotating structure which is formed by a sloped surface on which the engagement is released. 2. The pivot structure for a door according to claim 1, further comprising a protrusion having the inclined surface around the hinge. 3. The hinge comprises a hinge pin and a pin hole rotatably pivoting the hinge pin, and the slope is formed between the hinge pin and the pin hole. The door rotation structure described in 1.