JPS5820959Y2 - Closed door hinge device - Google Patents

Description

[Detailed description of the invention] This invention is a sealed door that is equipped with a sliding bearing part and a pivot that can rotate within the sliding bearing part, and both of which can be slid relative to each other in a direction perpendicular to the front surface of the door frame. The present invention relates to a hinge device.

In nuclear installations, it is often the case that the penetrations between individual installation areas are provided with hermetically sealed doors.

Rubber elastic materials, which are commonly used as packing materials for airtightness in such doors, cannot be used because of their low radiation resistance or, in some cases, insufficient heat resistance.

For example, a graphite asbestos material is used instead of a rubber elastic material, but this material has a low elasticity.

However, in order to obtain the desired airtightness, the door must nevertheless be pressed against the frame precisely parallel to the plane, and this is due to unavoidable manufacturing tolerances, especially the parallelism between the axis of the hinge and the frame. It is extremely difficult to achieve this if the requirements are insufficient.

It has already been proposed to design the bearing part of the hinge as a slot with a longitudinal axis oriented at right angles to the frame plane.

When pressing the door against the frame (eg, by a handle), the door is naturally pressed parallel to the frame.

However, this configuration has the disadvantage that the door lacks smooth guidance during its pivoting movement, which may cause it to come into contact with the seal and damage it. It is also something that cannot be removed.

The purpose of this invention is to precisely and reliably guide the door supported by the hinge device through the entire turning process, so that when the door body reaches the closed position, the door body remains parallel to the frame. It is an object of the present invention to provide a hinge device that is pressed against a frame.

In order to achieve this objective, the following is proposed according to the present invention.

That is, the pivot has a flat notch on one side, and when the door body is opened, a portion extending over 180° around the circumference of the pivot comes into contact with the inner surface of the opening of the sliding bearing portion to guide the door body, and when the door is closed, the circumference of the pivot is cut out. The portion of 180 degrees or less is in contact with the inner surface of the opening of the sliding bearing portion to guide the door body.

During most of the pivoting movement of the door, more than half of the circumference of the pivot shaft is in contact with the sliding bearing surface, so that it is reliably held.

Just before reaching the closed position, the pivoting of the notch in the pivot reduces the contact area between the pivot and the plain bearing surface to less than half of the total circumference of the pivot, thereby providing room for movement of the bearing.

Therefore, according to the present invention, the outline of the cross section of the axis is 270°.
It is proposed that the door be formed of a circular arc portion and a straight line portion connecting the end points of the circular arc portion, and that this straight portion is perpendicular to the front surface of the door frame when the door body is closed.

Further, in the present invention, the sliding bearing portion has the following configuration.

That is, the shape of the outline of the inner surface of the opening of the sliding bearing part is a first circular arc part of approximately 270° with the center point Ml and the same radius as the pivot axis, and a second circular arc part with the center point M2 and the same radius as the pivot axis of approximately 90°. 2, a first straight line that is tangent to both arcs, and a second straight line that is perpendicular to the front surface of the door frame when the door body is closed.
The relative position of the center points of both circular arc parts is determined by the door frame in the direction perpendicular to the front surface of the door frame. The structure is such that they are each shifted by a predetermined dimension in a direction parallel to the body.

This dimension corresponds to the maximum compensable tolerance between the door frame and the door body.

An embodiment of the present invention will be described in detail below with reference to the drawings.

The door has a frame 1 fixed in a wall mechanism 3 with a complex 2 in a continuous manner, and a surrounding packing 4 made of graphite-impregnated asbestos.
It is equipped with

The door body itself is quite ordinary, consisting of a frame 5 and a door body 6.
It consists of

Since the protective function is important for this door, the door is made of lead-filled 7
As a result, the door is heavy and requires a guide section to accurately guide the door.

As shown in FIG. 1, the door is supported by at least two pivots 8 and fixed to the frame 1 via a main body 9.

The pivot 8 slides in a sliding bearing through an opening 10 in the tongue 11, which tongue 11 with this opening is fixed to the edge frame 5.

Further, contrary to the above-mentioned configuration, the pivot may be provided in the door body and the sliding bearing portion may be provided on the frame 1 side.

The pivot 8 has a planar cutout on one side, and its cross-sectional profile is 2
It is formed from a 70° circular arc portion and a straight portion connecting the end points of this circular arc portion, and this straight portion is positioned perpendicular to the front surface of the door frame 1 when the door bodies 5, 6 are closed.

FIG. 4 shows the opening 1 of the tongue 11 which serves as a sliding bearing.
0 illustrates a contour configuration of 0.

A first circular arc portion A having a radius of approximately 270°, which is equal to the radius of the pivot shaft 8, is formed around the first center point M1.

Starting from the center point M1, a second center point M2 is determined at a position offset outwardly by a predetermined dimensional tolerance, and a similarly pivot point is established around this second center point M2 at an angle of approximately 90°. A second circular arc portion B having the same radius is formed.

Both arc parts are connected to each other by their common tangent C,
In addition, when the door is closed, it is connected by a second straight line that is perpendicular to the front surface of the frame 1 and parallel to the notch plane of the pivot 8, forming a closed curve.

The length of this straight line is determined based on the mutual spacing between center points M1 and M2, and also depending on whether the arcuate portions A and B are smaller than 270° and 90°, respectively.

As can be seen from the illustrations in FIG. 3 and FIG. 4 of the door body, the pivot 8 guides the door bodies 5, 6 reliably and precisely over almost the entire pivot area.

This is because more than half of the circumference of this pivot 8 is inscribed in the inner surface of the opening 10 of the sliding bearing.

Furthermore, since the pivot shaft 8 is notched when the door is closed, less than half of the circumference of the pivot shaft is gripped by the sliding bearing due to the missing contact surface, and the sliding bearing can be shifted a certain distance.

This action is carried out, for example, by pressing the door body 5, 6 against the frame 1 by means of a known closing rod 13 with an actuating lever 14, in which case the slight contact between the door body and the frame due to manufacturing reasons is avoided. Errors can be compensated for.

[Brief explanation of the drawing]

Figure 1 is a bottom view of the sealed door according to the present invention, Figure 2 is an enlarged vertical sectional view taken along the line of Figure 1, Figure 3 is an enlarged view of the main part of Figure 2, and Figure 4 is the opening of this door. Shows an enlarged view of the main parts at the time. In the figure, 1 is the door frame, 5 and 6 are the door bodies, 8 is the pivot,
10.11 is a sliding bearing part, A and B are circular arc parts, C and D are straight parts, and M19M2 is a center point.

Claims (1)

[Scope of utility model registration request] In a device that includes a sliding bearing and a pivot that can rotate within the sliding bearing, both of which can be displaced relative to the front surface of the door frame in a direction perpendicular to the front surface of the door frame, the pivot 8 has one side that is flat. a bearing portion 4α which is cut out in the main body 5.6 and extends over 180° around the pivot shaft when the door body 5.6 is opened;
Guide the door body 5:68 in contact with the inner surface of the opening of J,1,'', and the door body 5:68. When '6 is closed, the circumference 1 of the said pivot
In order to configure the sliding bearing portion 10.11 so that the portion of 80° or less touches the inner surface of the opening of the sliding bearing portion and guides the door bodies 5, 6, the outline of the cross section of the pivot 8 is a circular arc portion of 270° and this and a straight line connecting the end points of the circular arc parts, and this straight line is positioned perpendicular to the front surface of the door frame 1 when the door bodies 5 and 6 are closed, and the opening 10 of the sliding bearing part is
A first circular arc portion A of approximately 270 degrees with the center point Ml and the same radius as the pivot axis, and a first circular arc portion A with the center point M2 and the same radius as the pivot axis of approximately 90 degrees.
° second circular arc part B, first straight line part C formed by the tangents of circumferential circular arc parts A and B, and a second straight line that is perpendicular to the front surface of the door frame 1 when the door bodies 5 and 6 are closed. In this case, both center points M, M2 of the circumferential arc parts A and B are also in the direction perpendicular to the front surface of the door frame 1. A hinge device for a closed door, characterized in that the hinge device is also shifted by a predetermined dimension in a direction parallel to the door frame.