JPH044413Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) The present invention relates to a connection support structure of crosspieces arranged in a grid pattern on the ceiling of a clean room.

(Prior art) Filters are installed on walls, ceilings, etc. in a clean room. Particularly in clean rooms where high cleanliness is required, the weight of the filter itself is large and the amount of filters increases, so the frame material to which it is attached must also be fairly strong. Among these, the frame members, so-called crosspieces, for supporting the filters installed on the ceiling surface must have a large effective cross section, and must also ensure the connection and support between the crosspieces.

(Problems) Current crosspiece connections have been proposed such as those in which bolts are simply tightened through reinforcing materials, and structures in which crosspieces are inserted and supported from both of the connecting materials. All of these do not have sufficient connection support, which causes the filter to sag or shift due to wind pressure, which reduces the airtightness in the clean room, and also causes accidents such as the filter falling off.

(Means for solving the problems) This invention was devised in view of the above problems.
A joint plate is installed between opposing crosspieces, a holding member is provided to hold both crosspieces from above the joint plate, and the joint plate is attached onto the crosspiece using a pressure bolt from the top of the support member. By pressing, the connection between the crosspieces can be firmly supported.

(Example) The present invention will be explained in detail below based on the drawings. FIG. 1 is a schematic diagram showing a state in which crosspieces are arranged in a lattice pattern on the ceiling surface.

That is, it is constituted by a so-called joint-type connection X section that connects opposing beams in the same direction, and a connection Y section that has another beam interposed between the opposing beams. The connection support structures in the X and Y sections basically have almost the same configuration, but in the Y section, in order to support the crosspieces arranged at right angles, as will be described later, the joint plate Different shapes.

As shown in the perspective view of FIG. 2, the connection and support structure of the X section consists of the main components of a holding member 1, a connecting plate 2, and a crosspiece 3. In addition, as shown in the side view of FIG. 3 (the view taken along the line A-A in FIG. 1) and the front view of FIG. 4 (the view taken along the line B-B in FIG. 1 has a general cross-sectional shape with an upper side 11 and side sides 12, 12, and the lower ends of the side sides 12, 12 are bent inward to form hook-shaped holding parts 12a, 12b.
Moreover, bolt holes 13 are provided at appropriate intervals on the upper side 11.
13...Perforated. The holding material 1 is not a long material but a regular length material having a predetermined length. The joint plate 2 is a strip of material having a predetermined thickness, and since it is placed inside the holding material 1, its width is somewhat smaller than the inner width of the holding material 1, and its length is approximately the same as that of the holding material 1. It's summery. Furthermore, crosspiece 3
is a drawn material such as aluminum or steel, and is formed to have a desired effective cross section. Normal attachment part 31
Filters 5, 5 are provided on both upper surfaces 31a, 31b of
a and 5b are placed. Further, a support portion 32 is formed on the top of the attachment portion 31. The support portion 32 is formed with tabs 32a and 32b that fit into the holding portions 12a and 12b of the holding material 1 described above. Ear piece 32
Both ends of a and 32b extend on the upper side and are bent downward to form a reverse hook shape.

In each of the above constituent members, the clamping bolts V, V are fixed in the bolt holes 13, 13 of the holding member 1. As a normal fixing method, bolt holes 13 and 1 are screwed into bolt holes 13 and 1 with nuts N and N screwed together in advance on pressure bolts V and V.
Insert into 3. Then, it is screwed into pop nuts PN arranged on the back side of the upper side 11. In such a state, as shown in the side view of FIG. 3, the joint plate 2 is placed on the upper surface of the supporting parts 32, 32 of the opposing crosspieces 3, 3, and the holding material 1 is placed on it. . Usually, the connecting plate 2 is placed on one of the crosspieces 3, and the holding member 1 is inserted with the ears 32a, 32b of the crosspiece 3 inserted into the holding parts 12a, 12b. Then, the other crosspiece 3 is inserted into the holding member 1 in the same manner. Next, the clamping bolts V, V are threaded through the pop nuts PN, PN, and the joint plate 2 is pressed with the tips of the bolts V, V. After obtaining a predetermined pressure, the nuts N, N are tightened, and the pressure bolts V, V are fixed to the holding member 1 while pressing the connecting plate 2.

In the above structure, the connection between the crosspieces 3 and 3 is not simply held by the holding member 1, but the joint plate 2 installed on the top surface is pressed by the clamping bolts V, V. This increases the strength of the connection between the crosspieces 3 and 3 on the same plane.

Therefore, even when the holding member 1 is suspended from the structural members of a clean room via the hanging bolts 4, it does not sag, and the expected connection strength and support strength can be obtained.
Therefore, both upper surfaces 31a, 31 of the attachment part 31 of the crosspiece 3
Even when the filters 5a and 5b are placed on the filters 5a and 5b, no sagging occurs and the airtightness in the clean room is not lost.

5 is a plan view of the Y part in FIG. 1, and FIG. 6 is a view taken along the line C--C in FIG. 1.

That is, as described above, the Y part has a so-called cross-shaped connection support structure in which another crosspiece 3 is interposed between the opposite crosspieces 3 and 3 in a perpendicular state.
Similarly to the X section, the joint plate 2 is pressed by the clamping bolts V, V in this Y section, but the joint plate 2 itself is formed into a substantially T-shape in order to also support the orthogonal crosspieces 13. Then, the opposing bars 3, 3 are connected and supported in the same manner as described above, and the support portions 32 (lugs 32a, 32b) of the orthogonal bars 3 are connected to the holding portions 12a, 12b of the holding material 1. Insert and press the joint plate 2 with the tightening bolt V.

Therefore, the Y section does not have a length that firmly connects the opposed bars 3, 3, but can similarly support other bars 3 that are perpendicular to each other. In addition, when the other crosspieces 3 are not made of one crosspiece but two crosspieces are made to face each other, the crosspieces must also be connected to each other. In that case, a cross-shaped joint plate will be used. Also, crosspiece 3,3
A filler 7 is provided on the mutually abutting end surfaces via a backup material 6 to ensure airtightness between the crosspieces 3, 3....

As mentioned above, each connection part (X
part, Y part), the crosspieces 3, 3 are supported by the holding member 1 and pressed by the joint plate 2 by the clamping bolt V.
...The beams 3, 3, which are firmly connected and supported each other and arranged on the ceiling surface, are themselves highly rigid framework members.

(Effects) As a result, the filters fixed to the crosspieces do not sag or shift in position, and the clean room can maintain high airtightness.

This allows the cleanliness of the clean room to be maintained at a constant level.

[Brief explanation of drawings]

Fig. 1 is a ceiling plan of the crosspieces arranged in a grid pattern, Fig. 2 is a perspective view showing each component, Fig. 3 is a view taken along the line A-A in Fig. 1, and Fig. 3 is a perspective view showing each component. 4 is a view taken along the line B--B in FIG. 1, FIG. 5 is a plan view of the Y portion, and FIG. 6 is a view taken along the line C--C in FIG. 1. In the figure, 1 is a holding material, 12a and 12b are holding parts,
2 is a joint plate, 3, 3... is a crosspiece, 32 is a support part, 3
2a and 32b are ear pieces, V, V... are clamping bolts,
PN, PN is a pop nut, 4 is a hanging bolt, 5,
5a and 5b are filters.

Claims (1)

[Scope of Claim for Utility Model Registration] A system in which crosspieces are arranged in a lattice pattern on the ceiling of a clean room, and a supporting member and both crosspieces are hung with connecting plates installed between opposing crosspieces. The crosspiece is composed of an attachment part and a support part provided above the attachment part, and an upper surface for placing the filter is formed above the attachment part and on both sides of the support part, and The supporting member is made of a long piece of material with both ends of the upper side bent downward to provide hook-shaped ears, and the holding member has an approximately shaped cross section with the upper side and two side sides perpendicular to the upper side, The lower end of the side edge is bent inward to form an upward hook shape to form a holding part that hooks onto the lug of the crosspiece, and the upper edge is provided with a clamping bolt for clamping the joint plate. are screwed together, and the joint plate is made of a strip of material whose width is somewhat smaller than the inner diameter of the holding material and approximately the same length as the holding material. A connection support structure for the crosspieces installed in the.