JP3319218B2 - Door rotation structure - Google Patents

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 housing of an information processing apparatus or the like. A door of a housing such as an information processing device includes a hinge between the housing and the door to open and close the door. When the door is opened too much beyond a certain opening angle, there is a disadvantage that the hinge portion is easily broken, and a countermeasure is required.

[0002]

2. Description of the Related Art As shown in an external perspective view of the apparatus shown in FIGS.
Both are formed of a synthetic resin molded hinge 120 integrally molded between the housing 100 and the door 110 so as to engage with the concave and convex combination with each other. FIG. 9 (b) shows only the upper hinge.

[0003] The hinge 120 has a hinge pin 120a integrally protruding from the inside of an arm 110a projecting at an L-shaped right angle to the door surface above and below a side end of the door 110 so as to be opposed to each other vertically. And pin holes 100a drilled above and below the housing opening so as to pivotally support and support. The door 110 is normally opened and closed at a fixed opening angle of about 120 degrees around the upper and lower hinges 120 as shown by the two-dot chain line in FIG.

[0004]

However, according to the above-described door rotating structure, there is no problem when the door is opened at a constant normal opening degree, but when the door is opened too much beyond the limit, the side of the door is opened. The end interferes with (hits) the side surface of the housing, and a large force is exerted on the hinge by using the lever as a fulcrum, thereby causing a problem that the hinge pin is broken or the pin hole is damaged.

[0005] In view of the above problems, an object of the present invention is to provide a door rotating structure that can prevent 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, a door is provided between a housing and a door so that the door is rotatably engaged with the door. And a slope which is provided around the hinge and which gets on each other when the door exceeds a certain opening degree and releases the engagement.

[0007]

A hinge is provided between the door and the housing so that the hinges are engaged with each other and pivoted normally until a certain opening degree is reached, and a slope is provided which, when exceeding a certain opening degree, rides on each other and releases the engagement. Therefore, if the door is opened beyond a certain opening, the engagement is released before interfering with the housing, the hinge function is lost, and the door is released from the housing, so that the hinge is overloaded. However, breakage and damage of the hinge can be prevented.

[0008]

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

The hinge 3 includes a hinge pin 3a, which is integrally formed and protruded from the inside of each of arms 2a projecting at right and left sides of the door 2 at right angles to the door surface so as to face each other, and a hinge pin 3a. And pin holes 3b formed above and below the housing opening so as to be pivotally connected and supported.

Further, in the first embodiment of the present invention, the slopes 4 which ride 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. Portion, and the slope on the housing side is provided with a pair of projections 5 each having an oblique line rising to the left.

Each slope 4 of the pair of projections 5 has a fan shape having a rotation angle of 30 degrees starting from a position where the door 2 is opened by 90 degrees, and has a flat portion 4a having a rotation angle of 30 degrees following the slope 4. . When the door 2 opens a rotation angle of 120 degrees, the slopes 4
To reach the flat portion 4a.

The height H of each flat portion 4a (see FIG. 1 (b)) is such that the hinge pin 3a comes out of the pin hole 3b and the door 2 can be removed from the housing 1 when the slope 4 is completely up. In addition, the door 2 is attached to the housing 1 by pushing the upper and lower arms 2a apart so that the hinge pin 3a is
b.

With this configuration, the door normally opens and closes smoothly around the hinge up to a rotation angle of 120 degrees at which the slopes overlap. 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 each other's slopes, and elastically deform the upper and lower arms 2a facing each other as shown in the sectional view of the main part of FIG. In order to push and expand (the figure shows the upper arm), the force of opening the door 2 receives the frictional resistance of the slope, and when the slope goes up and reaches the flat portion 4a, the hinge pin 3a comes out of the pin hole 3b and the door is opened. 2 is ready to be removed from the housing 1.

Therefore, since the hinge function is lost before the door is opened too much and the side edge of the door hits the side of the housing, no excessive force is applied to the hinge pin, and the hinge pin is broken or the pin hole is damaged. Can be prevented.

FIG. 4 is a sectional side view of a main part of a second embodiment of the present invention. In the second embodiment, upper and lower hinges 3-1 and 3
The second embodiment is different from the first embodiment in that the hinges are vertically symmetrical with each other. That is, the lower hinge 3-2 is configured to match the orientation of the upper hinge 3-1.
Of course, the orientation may be reversed.

The projections 5 having the inclined surfaces 4 around the hinges are integrally formed and protruded similarly to the first embodiment. The door 2 is fitted to the housing 1 so that the upper and lower hinge pins 3a are dropped into the pin holes 3b from above.

With this configuration, the door can be moved to the first position.
As in the case of the embodiment, normally, it is opened and closed easily up to 120 degrees. When the opening of the door exceeds 120 degrees, the projections ride on each other's slope, and the door is lifted upward. then,
Since the upper and lower hinges are configured in the same direction, the upper and lower arms are not elastically deformed as in the first embodiment.

When the projection has gone up the slope, the hinge pin comes out of the pin hole, and the door comes off the housing.
The same operation and effect as those of the first embodiment are obtained. 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 the wear of the hinge can be reduced.

5 (a) and 5 (b) are an assembly plan view and a sectional view taken along the line BB of FIG. 5, and an exploded perspective view of the essential part of FIG. 6, respectively, showing a third embodiment. The third embodiment is a modification in which the hinge of the first embodiment and the projection with the slope formed around the hinge are combined. That is, the hinge 3 of the third embodiment is
A part of a ring (a rotation angle of 130 degrees obtained by adding a flat portion 4a having a rotation angle of 10 degrees to be described later to a normal opening rotation angle of 120 degrees) protruding from the upper and lower arms 2a of the door 2 on opposing surfaces of the upper and lower arms 2a. An arcuate hinge pin 3a formed by cutting out, and an annular pin hole 3b for pivotally connecting the arcuate hinge pin 3a.
It consists of

Further, the ring-shaped pin hole 3b and the arc-shaped hinge pin 3a are provided with the slopes 4 and 4-1, which have the same function as those of the first embodiment, and which ride on each other.
The slope 4 on the side is a hatched portion rising to the right, and the slope 4-1 on the housing 1 side.
Is an oblique line rising to the left), and the inclined surface 4-1 on the side of the ring-shaped pin hole 3b has a rotation angle of 1 following the inclined surface 4-1.
It is provided so as to fill a part of the ring-shaped pin hole 3b together with the flat part 4a of 0 degree.

The height of the arc-shaped hinge pin 3a is such that when the door 2 is opened and the slopes 4 cross each other up the slope 4-1 to reach the flat portion 4a, the height of the hinge pin 3a with respect to the annular pin hole 3b is increased. Set the dimensions to be out of range.

With this configuration, the door usually has a total of 12 degrees of a rotation angle of 90 degrees and a rotation angle of 30 degrees at which the slopes overlap each other when the arc-shaped hinge pin is fitted in the ring-shaped pin hole.
Open / close by engaging 0 degree. Open the door too much and open 12
Opening more than 0 degrees to a flat part that crosses the slope,
Since the hinge pin comes out of the pin hole, breakage of the hinge can be prevented as in the first embodiment. Further, the arc-shaped hinge pin of the third embodiment has an advantage that the strength against breakage can be increased because the cross-sectional area can be 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 climbing between the slopes provided on one ring. Can be spread out without bias. Further, similarly to the second embodiment, the upper and lower hinges may be configured to be up and down and in the same direction, and the hinge pins may be removed by lifting the door upward by climbing the slopes.

FIGS. 7 (a) and 7 (b) show a main part assembly plan view and a sectional view taken along the line CC, and an essential part exploded perspective view of FIG. 8 shows a fourth embodiment. The fourth embodiment is a modification of the hinge of the third embodiment. That is, the hinge 3 of the fourth embodiment is
It is composed of a disc-shaped hinge pin 3a protruding from the upper and lower arms 2a of the door 2 on opposite sides of the arm 2a by integral molding, and a circular pin hole 3b for pivotally connecting the hinge pin 3a. The disc-shaped hinge pin 3a has a fan-shaped cutout of the outer peripheral portion at a rotation angle of 130 degrees, and slopes 4 which ride on each other between the end portion and the circular pin hole 3b [the door 2 side in FIG. The slope has an upwardly sloping hatched portion, and the slope on the housing 1 side has an upwardly sloping hatched portion.
It has a flat portion 4a.

With this configuration, the door is turned by engaging the disc-shaped hinge pin into the circular pin hole and engaging a total of 120 degrees of a rotation angle of 90 degrees and a rotation angle of 30 degrees where the slopes overlap each other. Open and close dynamically. Further, if the door is opened too much and the slope exceeds 120 degrees and climbs on the slopes to each other and opens 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, the disc-shaped hinge pin of the fourth embodiment has an advantage that the strength against breakage can be further increased since the cross-sectional area can be made larger than that of the circular arc shape of the third embodiment.

As described above, the pivot structure of the door in each of the above-described embodiments is such that the doors are engaged with the housing and the door made of synthetic resin until the normal fixed opening degree of the door. By having a hinge integrally molded with the door, the door can normally be opened and closed normally to a certain degree of opening, and furthermore, by attaching a slope to the hinge that the doors ride over each other when opened beyond a certain degree of opening Since the hinge function is released and the door can be detached from the housing before the door interferes with the housing and overloads the hinge, breakage and damage of the hinge can be prevented.

[0028]

As described in detail above, according to the present invention,
This is extremely useful in industry, such as preventing the hinge from being damaged due to excessive opening of the door.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a first embodiment according to the present invention and a sectional view taken along line AA of FIG.

FIG. 2 is an exploded perspective view of a main part in the first embodiment.

FIG. 3 is a cross-sectional view of a main part of an upper hinge showing a state in which the other slope is completely up in the first embodiment.

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

FIG. 5 is an assembly plan view of a main part of a third embodiment according to the present invention and a sectional view taken along line BB of FIG.

FIG. 6 is an exploded perspective view of a main part in a third embodiment.

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

FIG. 8 is an exploded perspective view of a main part in a fourth embodiment.

FIG. 9 is an external perspective view of an apparatus according to the prior art and its D.
-D sectional view

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Door 3 Hinge 3a Hinge pin 3b Pin hole 4 Slope

Claims (1)

(57) [Claims] 1. A hinge provided between a housing and a door and rotatably joining the door , the hinge being a hinge pin and a hinge pin being rotatable.
A pin hole to be joined is formed between the hinge pin and the pin hole.
Slopes that are attached around the hinges and ride on each other
Has, when the door is opened beyond a predetermined opening degree, another the slope
And the door is disengaged.
Rotating structure .