JP2011069079A - Air shower device - Google Patents

Abstract

【Task】
Provided is an air shower apparatus having a door that can maintain the airtightness of the door itself by fitting the connecting portion of the eaves door, and has a door that is easy to assemble.
When the size of the eaves door is increased, the glass plate needs to be enlarged. For this reason, there is a concern that the glass or the like may be broken, and the strength of the door and the glass plate and the leakage from the packing portion due to the increase in the glass plate area.
[Solution]
In response to the above-mentioned problems, it is possible to divide the eaves of the eaves door, that is, by adding an intermediate eave, the area of the glass plate can be reduced, the strength can be maintained, and dust leakage from the glass plate presser packing and the eaves joint surface can be suppressed. In addition, the secrecy is improved by fitting the split surfaces of the vertical hooks, dust leakage is prevented, and workability is improved.
[Selection] Figure 2

Description

  The present invention relates to an air shower apparatus having a heel door made of a drawn material such as aluminum or plastic.

  Air showers are installed at the entrances and exits of clean rooms or work rooms that manufacture semiconductors and precision machinery, or manufacture and process foods, and are used as passages or front rooms for clean rooms and work rooms. It is a device for preventing the inflow and carry-in.

  In a clean room or work room for manufacturing semiconductors, precision machines, etc., the interior is kept at a higher pressure of about 20 Pa than the outside in order to maintain the cleanliness of the room. The air shower installed in the meantime is required to have a hermetic degree to prevent dust leakage. Conventionally, flush type doors having a seamless surface have been used. However, when the door dimensions are changed, it is necessary to change the sizes of the honeycomb and the aluminum plate, and there is a problem that an object larger than the member dimensions needs to be joined.

  Moreover, although not for the air shower device, as described in the patent document (Japanese Patent Laid-Open No. Hei 8-144462), the coffin door constituted by the combination of the vertical coffin and the horizontal coffin is composed of the joint portion of the coffin and the glass. There was a possibility of leakage from the plate holder packing. In addition, when changing the dimensions, it is possible to use a kite having a different width dimension or change the size of a glass plate (externally a mirror plate, acrylic, steel plate, etc.). Therefore, it is necessary to process each member after an order is placed, and it takes time to manufacture.

Japanese Patent Laid-Open No. 8-144652

  In a general door structure, a vertical hook and a horizontal hook are fixed by screwing or the like. When the dimensions change, it is carried out by changing the dimensions of the vertical and horizontal planes, and the glass plate. However, since the cage is a drawn material, it is often handled by changing the length of the cage and the dimensions of the glass plate. In that case, the area of the glass plate was increased, and the possibility of dust leakage due to an increase in packing length was increased. In addition, when the glass plate becomes large, there is a concern that the glass or the like may break, and the strength as a door may be insufficient because the fixed portion is the same.

  In order to solve the above-mentioned problems, the present invention can easily cope with changes in the height and width dimensions of the eaves door, and improves the airtightness of the joint surfaces of the eaves and the horizontal eaves. It is an object of the present invention to provide an air shower apparatus having an eaves door.

  In order to achieve the above object, the present invention provides an air shower device using a coffin door made of a drawn material such as aluminum or plastic, and the coffin door is composed of a vertical coffin, a horizontal coffin and a glass plate, The downspout can be divided into a downspout and an intermediate downspout. The downspout, the intermediate downspout and the downspout are slid and fitted, and the glass plate is fixed by packing provided at the end of the upset. It is characterized by that.

  In addition, the end portions of the saddle door that are fitted on both sides of the vertical rod have a female shape, and one end of the intermediate vertical rod has a female shape and the other has a male shape.

  Furthermore, the male shape of the end portion of the coffin door has a concave shape in cross section, and a flat plate-like protrusion is provided in the concave portion, and the female shape corresponding to the male shape of the coffin door is In the cross section, the shape is a bowl shape and grooves are provided on both sides, and the flat projections are fitted in the grooves.

  The coffin door of the present invention can maintain airtightness even at a pressure difference of about 20 Pa, and can prevent dust leakage. Also, assembling workability, it is only necessary to prepare vertical and horizontal rods, and as soon as an order is received, the length of the rod is adjusted and the end plate is processed into a predetermined dimension, so that the delivery time can be shortened. realizable. And various doors are completed by attaching manual parts, automatic parts, etc. to a finished product. By using a drawn material such as aluminum or plastic, not only airtightness but also prevention of dust generation from the material, weight reduction, and improvement of processing accuracy can be achieved.

  In addition, since strength is provided by fitting the hooks, joint members such as screws can be reduced.

  Even if it looks, since it is not divided into upper and lower parts, a belt-like glass window or the like can be attached, and it has a design.

It is a perspective view showing the appearance of the air shower device of the present invention. It is a perspective view of the coffin door of the air shower device of the present invention. It is AA sectional drawing of the coffin door of FIG. 2 of this invention. It is BB sectional drawing of the coffin door of FIG. 2 of this invention. It is the elements on larger scale of the A section of FIG. 4 of this invention. It is CC sectional drawing of the coffin door of FIG. 2 of this invention. It is a perspective view at the time of providing the coffin door of this invention in an automatic door. It is a figure which shows the fitting part of the vertical gutter and intermediate | middle vertical gutter of the gutter door of this invention. It is a figure which shows the other Example of the fitting part of the vertical hook of the vertical door of this invention, and an intermediate vertical fence. It is a figure which shows the other Example of the fitting part of the vertical hook of the vertical door of this invention, and an intermediate vertical fence. It is a figure which shows the other Example of the coffin door of this invention. It is a figure which shows the DD cross section of FIG. 11 of this invention. It is a figure which shows the other Example of the coffin door of this invention. It is a figure which shows the EE cross section of FIG. 13 of this invention. FIG. 3 shows a cross-sectional view of a high-profile heel door of the present invention. Sectional drawing of the wide door of the frontage of this invention is shown. The fragmentary enlarged view which shows fitting with the vertical coffin of the coffin door of this invention, and a thin glass plate is shown. The fragmentary enlarged view which shows fitting with the vertical fence of the coffin door of this invention, and a thick glass plate is shown.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an air shower apparatus having a coffin door according to the present invention. In FIG. 1, 1 is the entire air shower device, 2 is a jar door, and 3 is a glass plate provided at the center of the jar door 2 so that the inside of the shower chamber 6 can be seen. A plurality of blowing nozzles 7 for blowing clean air are installed on the wall surface in the shower chamber 6.

  FIG. 2 is a perspective view of the coffin door 2 of the air shower device of the present invention. In FIG. 2, 10 is a vertical gutter on both sides of the eaves door 2, 11 is an intermediate eaves provided on the inner side of the eaves 10, and 12 is a horizontal eaves provided above and below the eaves door 10.

  A glass plate 3 is provided between the upper and lower horizontal fences 2 and between the intermediate vertical fences 11. Here, a steel plate, a mirror plate or an acrylic plate may be provided outside the glass plate 3. In general, in the case of an air shower device, there are many glass plates so that the shower room can be seen through.

  Moreover, the hinge 5 is installed in either one of the left and right ends of the eaves door 2, and is fixed to the inlet of the air shower device so that the door can be opened and closed. Reference numeral 4 denotes a door handle, which is installed on the opposite side of the hinge 5 to a height of about 930 mm.

  Moreover, it describes about the dimension of a door here. The lateral width of the door is generally 800 mm and the height is 1900 mm.

  Next, the cross section of each part of the coffin door will be described.

  FIG. 3 is a vertical cross-sectional view of the central portion of the eaves door 2, that is, a cross-sectional view taken along line AA of FIG. In FIG. 3, the upper side and the lower side are recumbent 12, have a rectangular shape, and the inside is a cavity. Further, the inner side of the horizontal bar 12 has a structure having a tapered recess so as to fix the glass plate 3, and a glass plate pressing packing 15 is inserted therein to fix the glass plate 3. Here, aluminum or plastic is used as the material of the heel door. The glass plate pressing packing is rubber.

  4 shows a cross-sectional view of the central portion of the heel door 2, that is, a cross-sectional view taken along the line BB of FIG. Here, FIG. 4 shows a cross-sectional view vertically, with the upper side showing the right side of the door and the lower side showing the left side of the door. In FIG. 4, the upper and lower sides, that is, both the left and right sides, are vertical hooks 10, and intermediate vertical hooks 11 are respectively arranged inside, and the glass plate 3 is fixed by each intermediate vertical hook 11.

  The fitting between the vertical hook 10 and the intermediate vertical hook 11 will be described with reference to FIG.

  In FIG. 4, a vertical hook cover 14 is installed on each end face of the vertical hook 10. The structure of the vertical end face is a female structure at both ends, with the front and back surfaces protruding to form recesses, and the flat plate protrusions protruding from the front and back surfaces within the recesses with a predetermined gap.

  The vertical gutter cover 4 has a gutter shape having grooves on both sides so as to be fitted into this structure, and a vertical gutter projection is fitted in this groove. The vertical hook cover 14 is inserted from the upper part of the vertical hook 10 and is slid and fitted.

  Further, the structure of the intermediate downboard 15 is a female type for fixing the glass plate and a male type for fitting with the downboard.

  The glass plate 3 is fixed at the end of the intermediate downboard 11 with a female structure, and has the same structure as the end of the downboard 10, and is fixed by providing a glass plate holding packing 15 in the recess of the end. .

  FIG. 5 is a partially enlarged view of a portion A in FIG. FIG. 5A is a cross-sectional structure of the end portion of the downspout 10 fitted with the intermediate downspout 11, and FIG. 5B is a cross-sectional view of the end portion of the intermediate downspout 11 fitted with the downspout 10. It is. The end portion of the vertical rod 10 has front and back surfaces extended to form a recess 16 (actually a groove perpendicular to the paper surface), and a flat projection 17 from the front and back surfaces within the recess 16 has a predetermined gap 18. Provide. Moreover, the structure of the edge part of the intermediate vertical hook 11 is a structure which has the groove | channel 20 on both sides in the bowl shape. Here, since the flat projections of the recesses of the vertical hook 10 and the grooves 20 of the intermediate vertical hook 11 are fitted, the confidentiality varies depending on the surface contact state, that is, the adhesion and the contact area. This will be described later.

  FIG. 6 is a cross-sectional view taken along the line CC of FIG. Accordingly, the upper side of FIG. 6 is the right side of FIG. 2, and the lower side of FIG. 6 is the left side of FIG. In FIG. 6, the upper and lower sides, that is, the left and right sides of the eaves door are the vertical eaves 10, the intermediate eaves 11 are arranged inside, and the horizontal eaves 12 are arranged in the center. The intermediate vertical hook 11 and the horizontal hook 12 are fitted to each other. The end of the intermediate vertical hook 11 has a concave shape, the horizontal hook 12 has a convex shape, and the convex portion of the horizontal hook 12 is fitted into the concave portion of the intermediate vertical hook 11. To incorporate. 6 and 4, the inner structure of the intermediate downboard 11 is different. The end of the place where the glass plate 3 is installed has a flat projection 17 in the recess 16, and the end of the place where the horizontal bar 12 is not provided with the flat projection 17.

  FIG. 7 shows a perspective view of an automatic door type in the case where the saddle door 2 of the present invention is provided on the automatic door. In FIG. 7, reference numeral 21 denotes a hanging metal fitting. In such a configuration, the door handle, the hinge and the latch can be eliminated, and the operator can go in and out without touching the door handle.

  Next, FIG. 8, FIG. 9 and FIG.

  FIG. 8 shows a partially enlarged cross-sectional view in which the vertical hook and the intermediate vertical hook shown in FIG. 5 are fitted. That is, the groove 20 on both sides of the saddle shape of the intermediate vertical rod 11 is fitted to the flat projection 17 provided in the recess 16 of the vertical rod 10 and the flat portion 19 of the flange shape is flat. This is a case where about half of the protrusion 17 is in contact. In this case, confidentiality was maintained even at a pressure difference of about 20 Pa. Further, if the vertical hook 10 and the intermediate vertical hook 11 shown in FIG. 9 are fitted, the flat shape 22 of the intermediate hook and the flat plate-shaped protrusion 17 of the vertical hook are brought into substantially contact with each other to increase the contact area. Therefore, confidentiality is further improved.

  Further, FIG. 10 shows a structure in which the end portion of the intermediate vertical hook 11 is inserted into the concave portion of the vertical hook end, and has a tapered shape instead of the hook shape, and the fitting is different from the slide type. That is, the end of the intermediate downboard is provided with a groove having the same width as that of the protrusion 17 so that the end of the intermediate downboard does not come off if it is inserted as a tapered shape with a sharp tip so that it can be easily inserted into the gap 18 of the flat plate-like protrusion 17 of the recess of the downboard. ing. In such a configuration of FIG. 10, the contact area of the vertical hook and the intermediate vertical hook is smaller than those in FIGS. 8 and 9, and thus the confidentiality is inferior, but the workability is improved.

Next, FIG. 11 shows a perspective view and FIG. 12 shows a cross-sectional view of the coffin door when the door is narrow.
FIG. 11 has a configuration in which an intermediate vertical rod is eliminated as compared with the rod door of FIG. FIG. 12 is a sectional view taken along the line DD in FIG. 11 is provided on both sides of the door, but since FIG. 12 shows the cross section vertically, the upper side is the right side of the door and the lower side is the left side of the door. In FIG. 12, the glass plate 3 is provided with a glass plate pressing packing 15 in a concave portion inside the vertical rod 10 to fix the glass plate 3. As described above, a door having a narrow door opening can be dealt with by eliminating the intermediate downspout, and workability is improved.

  Next, FIG. 13 shows a case in which a reed 24 is installed instead of a glass plate in a door having a narrow doorway. FIG. 14 shows an EE cross section which is a cross section of the coffin door of FIG. In FIGS. 13 and 14, since the door front is narrow, the intermediate downboard shown in FIG. 2 is eliminated, and the door corresponds to a narrow door. FIG. 13 shows a case in which the door central part is not a glass plate but a closed door, for example, a mirror surface or the like is installed, and has a structure of a reed 24. Therefore, both ends of the horizontal bar 24 have a bar shape and are fitted to the vertical bar 10 as shown in FIG.

  Next, although the perspective view of the coffin door is omitted for the coffin door when the height of the door is high, FIG. 15 shows a longitudinal sectional view of the central portion thereof. In FIG. 15, a horizontal bar 25 is added between the horizontal bars 12 above and below the door, the glass plate 3 is increased, and the height is adjusted. The upper and lower ends of the central horizontal bar 25 have a tapered shape with a sharp tip and have a recess, and the glass pressing packing 15 is installed to fix the glass plate 3.

  Next, FIG. 16 shows a cross-sectional view of the eaves door in the lateral direction of the eaves door when the door is wide. FIG. 16 shows a case where a vertical gutter is added to the center corresponding to a wide door and the glass plates 3 are provided on both sides of the central gutter. As described above, the glass plate 3 is fixed by installing the glass plate pressing packing 15 in the concave portion at the end, and fixing the glass plate 3. Further, as a method different from the configuration of FIG. 16, it is possible to add an intermediate downspout to deal with a door having a wide door opening.

  Next, fixation when the thickness of the glass plate of the coffin door 2 is different will be described with reference to FIGS. 17 and 18.

  17 and 18 are partially enlarged cross-sectional views in a state where the glass plate is fixed to the vertical gutter. FIG. 17 shows a case where the glass plate 3 is thin, and FIG. 18 shows a case where the glass plate 3 is thick. When the glass plate is thin, the amount of the glass pressing packing 15 is reduced, and when the glass plate is thick, the amount is increased. Although the shape of the glass plate pressing packing is the same as that in FIGS. 17 and 18, it can be changed. Although the glass plate is described here, even when tempered glass, netted glass, acrylic plate, end plate or steel plate is attached to the outside, it is possible to cope with it by simply changing the packing.

DESCRIPTION OF SYMBOLS 1 ... Air shower apparatus 2 ... 框 door 3 ... Glass plate 4 ... Door handle 5 ... Hinge 10 ... Longitudinal ridge 11 ... Intermediate vertical ridge 12 ... Horizontal ridge 14 ··· Vertical cover 15 ··· Glass plate holding packing 16 · ······················································································································ ·Hanging bracket

Claims (3)

An air shower device using a coffin door made of a drawn material such as aluminum or plastic,
The eaves door is composed of a vertical eave, a horizontal eave and a glass plate, and the eaves can be divided into a vertical eave and an intermediate eave,
An air shower apparatus having an eaves door, wherein the eaves, the intermediate eaves and the horizontal eaves are slid and fitted, and the glass plate is fixed by packing provided at an end of the eaves. The air shower device according to claim 1,
The mating ends of both sides of the eaves of the eaves door have a female shape,
One end of the intermediate vertical rod is a female type, and the other is a male shape. The air shower device according to claim 2,
The male shape of the end of the saddle door has a concave shape in cross section, and a shape having a flat projection in the concave portion,
The female shape corresponding to the male shape of the heel door is formed in a cross-sectional shape with a groove on both sides, and the flat projection is fitted in the groove. Air shower device with 框 door.

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