JPH05157301A - Clean booth - Google Patents

Abstract

PURPOSE:To enable a clean booth to be easily loaded in or unloaded out of a narrow entrance or exit when the clean booth is to be transported out by a method wherein supporting legs are fixed to four corners of a top plate storing a filter and an air suction fan, a lower part of the top plate has purifying atmosphere and each of the supporting legs is constructed to have a storing structure. CONSTITUTION:A clean booth 1 for use in assemblying electronic component parts and for holding only limited locations in clean atmosphere is comprised of a square top plate 2, supporting legs fixed at its four corners, and a transparent covering film (vinyl film) 4 hang from a circumference of the top plate 2 to cover the lower part of the top plate 2 and the supporting legs 3. Surrounding air sucked by an air suction fan stored in the top plate 2 is purified by an HEPA filter, injected below the top plate so as to keep the lower part of the top plate within the purifying atmosphere. In this case, the supporting legs 3 are comprised of cylindrical fixing leg members 10 fixed to the lower surface of the top plate 2, height adjusting bolts 12 fitted to the fixed leg members 10 and the sliding leg members 11 having running wheels 13 therein.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clean booth which is used to keep only a necessary part in a clean atmosphere for assembling electronic parts and various other work requiring a clean atmosphere. is there.

[0002]

2. Description of the Related Art An example of the above clean booth is shown in FIG. The clean booth 50 includes a rectangular top plate 51 and support legs 52 attached to the four corners of the top plate 51.
A suction fan and a filter (both not shown) are housed in the top plate, and air ejection holes are formed on the bottom surface of the top plate.
At the time of use, a transparent vinyl film 53 is attached to surround the supporting legs 52 from the top plate 51, the outside air is sucked by the suction fan and filtered by the filter to obtain purified air, which is blown down from the ejection hole to clean the inside of the vinyl film. It is intended to have an atmosphere. Reference numeral 54 denotes a product name fastener for opening a part of the vinyl film 53.

[0003]

The above-mentioned clean booth is not always installed at a fixed location, but it may be desired to move it depending on the purpose of use. Especially when moving from room to room, you have to pass through a narrow doorway, so you have to remove the support legs each time
Means for performing the assembly work in the room where it is carried in are adopted. This not only requires a great deal of trouble, but also has a problem that, for example, when a clean booth is installed in a clean room, dust is generated during the disassembling and assembling work to increase the load on the clean room.

In view of the above points, the present invention has an object to provide a clean booth which can easily carry in and out even a narrow entrance.

[0005]

A clean booth according to a first aspect of the invention for achieving the above object comprises a top plate for accommodating a filter and an intake fan, and supporting legs attached to four corners of the top plate. In the clean booth where the outside air sucked by the intake fan is filtered by a filter to become purified air, and the purified air is ejected from the ejection holes formed on the bottom surface of the top plate to create a purification atmosphere at the bottom of the top plate, each supporting leg is stored. It is characterized by that. A second aspect of the invention is characterized in that, as the storage structure, the supporting leg is composed of a plurality of tubular leg members that are successively fitted and inserted, and is expandable and contractable. A third aspect of the invention is characterized in that the supporting leg has a folding structure as the storage structure.

[0006]

[Function] By storing the support leg, the clean booth can be carried in and out even in a narrow entrance. It is also easy to restore.

[0007]

1 and 2 show a first embodiment. The clean booth 1 is composed of a square or rectangular top plate 2, support legs 3 attached to the four corners of the top plate, and a transparent coating (for example, a vinyl film) 4 that is suspended from the periphery of the top plate and covers the bottom of the top plate and the support legs 3. Reference numeral 5 denotes a product name fastener for opening and closing one side of the film as an opening / closing port. An intake fan and a HEPA filter are housed in the top plate 2, air ejection holes are formed in the lower surface of the top plate, and the outside air sucked by the intake fan is purified by the HEPA filter so as to be ejected from below the top plate. Since the structure is the same as the known structure, the description thereof will be omitted.

The support leg 3 is composed of a cylindrical fixed leg member 10 attached to the lower surface of the top plate 2 and a sliding leg member 11 fitted and inserted in the fixed leg member 10. Height adjusting bolts 12 and traveling wheels 13 are attached to the lower ends of the sliding leg members 11. 14 is a bolt for fixing the sliding leg member 11.

When using the clean booth 1, however, the adjusting bolts 12 are adjusted to adjust the running wheels 13.
And the top plate 2 is held horizontally in a fixed state.
Next, at the time of movement, the adjusting bolt 12 is screwed in and the traveling wheel 13 is used for traveling. When passing through the entrance / exit, the sliding leg member 11 is pushed into the fixed leg member 10 (FIG. 2), and the clean booth 1 is carried out as it is or when the entrance / exit is narrow, it is laid down sideways.

Next, FIG. 3 shows a second embodiment. The clean booth 20 of the present embodiment shows an example in which a telescope type support leg 21 is attached to the top plate 2 of the previous example. This supporting leg 21 is the top plate 2
It comprises a fixed leg member 22 attached to and a plurality of (two in the illustrated example) telescopic leg members 24a, 24b. The height adjusting bolt 24 and the traveling wheel 25 are attached to the lowermost leg member 24b as in the previous example. 26 and 27, when the telescopic leg members 24a and 24b are pulled out,
It is a stopper to prevent the sinking, and is projected by a spring.

According to this embodiment, the length of the support leg 21 can be further shortened as compared with the previous example. Therefore, it is easy to enter and exit the narrow entrance.

Next, FIGS. 4 to 6 show a third embodiment. The clean booth 30 of the present embodiment has a folding type support leg 31 attached to the lower surface of the top plate 2. That is, the supporting leg 31 is attached to the lower ends of the four corners of the top plate 2 on one side with short supporting members 32 and 33 on the other side and with the folding leg members 34 and 35 by supporting shafts 36 and 37. It is pivotally supported. 38 and 39 are guide pins which are attached to the folding leg members 34 and 35 and which are movable in the axial direction by springs, 40,
41 is formed on the support members 32 and 33, and the guide pin 3
8 and 39 are guide grooves, and when the folding leg members 34 and 35 are in a predetermined upright position, the guide pins 38 and 39 are the guide grooves 4 and 5.
Folding leg member 3 which is fitted into the protrusions 40a and 41a of 0 and 41
The upright state of 4, 35 is maintained. FIG. 5 is a front view of the folded state, and FIG. 6 is a bottom view thereof. The support member 3
The reason that the lengths of the folding legs 2 and 33 are given is to allow the folding leg members 34 and 35 to overlap with each other, as can be understood from FIG.

The traveling wheel 42 attached to the tip of the supporting leg 31 is preferably attached to the outside of the folding leg members 34 and 35 so as to project downward when folded. With this, when it is transported to the outside of the room, after the supporting leg 31 is folded, it can be moved by using the traveling wheels 42. Further, it is a matter of course that the folding leg members 34 and 35 in this embodiment may be combined with the telescopic type and telescopic type as in the first and second embodiments.

[0014]

According to the present invention, since the clean booth is composed of the top plate and the supporting legs for supporting the same, and the supporting legs are of the retractable type or the foldable type, or a combination thereof can be stored, so that they can be carried out. You can easily carry in and out even from a narrow doorway. Moreover, since it is not necessary to remove and attach the support leg as in the conventional case, the work can be performed easily and quickly, and dust can be prevented from being generated when the support leg is attached and detached.

[Brief description of drawings]

FIG. 1 is a front view of a first embodiment.

FIG. 2 is an explanatory view showing a state in which the supporting leg in FIG. 1 is contracted.

FIG. 3 is a front view of the second embodiment.

FIG. 4 is a front view of a third embodiment.

5 is an explanatory view showing a state in which the supporting leg in FIG. 4 is folded.

FIG. 6 is a bottom view of FIG.

FIG. 7 is a front view of a conventional example.

[Explanation of symbols]

 1 Clean booth 2 Top plate 3 Support leg 10 Clean booth 11 Sliding leg member 20 Clean booth 21 Support leg 30 Clean booth 31 Support leg

Claims (3)

[Claims] 1. A top plate for accommodating a filter and an intake fan, and supporting legs attached to the four corners of the top plate. The outside air sucked by the intake fan is filtered by a filter and ejected as purified air. A clean booth with a clean atmosphere at the bottom, with each support leg being a storage structure. 2. The clean booth according to claim 1, wherein the storage structure is composed of a plurality of tubular leg members that are sequentially fitted and inserted, and is expandable and contractable. 3. The clean booth according to claim 1, wherein the storage structure has a support leg that is folded.