JPH0244829Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a lattice-like structure in which a large number of hollow members are cross-connected to each other via joint members in the upper space of a room such as a laboratory or factory. A hollow member in the case of forming a lattice-like ceiling for supporting air filters when a support surface is formed and each air filter is arranged and mounted on the upper surface of each of the lattice-like through holes to form the room into a clean room. The present invention relates to an airtight device for a joint between joint members.

(Prior Art) The applicant previously proposed the air filter mounting airtight joint device of the type described above. That is, the device includes a cross-shaped joint member A having four fitting arms a orthogonal to each other, as shown in FIGS. 1 and 2, for example.
A hollow member B is fitted into each of the fitting arms a, and the circumferential end surface c of the fitting portion b of each hollow member B has a rectangular cross section.
and the abutting circumferential end surface d provided on the outer periphery of the base of the fitting arm a of the joint member A, and a sealing material e is placed between the upper end surfaces c1 and d1 of each abutting circumferential end surface cd. In this way, an airtight connection device between the air filter mounting hollow member B and the joint member A was constructed. f indicates a screw that connects and fixes both members A and B.

(Problems to be Solved by the Invention) In the above-mentioned airtight joint device, the abutting peripheral end surfaces d and c of the fitting arm a of the joint member A and the fitting portion of the hollow member B are line-jointed, so that The sealing performance of the sealing material e interposed between them is unstable, requiring careful consideration in seal construction, and there are drawbacks such as the sealing performance being destroyed by even the slightest shock vibration, and contaminated air can escape from the joint. There is a risk of leakage into the room.

(Means for solving the problem) The present invention solves the disadvantages of the conventional device,
The purpose of the present invention is to provide an airtight coupling device between a hollow member for installing an air filter and a joint member, which provides highly reliable leakage prevention at the joint, and the joint member has at least two mating arms, each of which includes: While fitting the hollow members together, the opening circumferential end surface of one of the two members and the abutting circumferential end surface provided on the outer periphery of the intermediate portion of the other member are butted against each other, and each of the abutting circumferential end surfaces of each of the two members is butted. In an airtight coupling device for a filter mounting hollow member and a joint member, which are formed by applying a sealing material between the upper end surfaces of the filter mounting hollow member and the joint member, at least one of the upper end surfaces of the abutting peripheral end surfaces thereof is A wide notch groove is formed along the length, and a curable sealing material is filled and solidified into the notch hole groove.

(Example) Embodiments of the invention will be described with reference to the accompanying drawings.

3 to 6 show an example of the implementation of the present invention, in which 1 shows a joint member made of a suitable material, for example a cross-shaped flat joint member made of rigid material,
The joint member 1 has fitting arms 1a, 1a, 1a, 1a each extending in four directions and having a rectangular cross section. Furthermore, the tip of each fitting arm 1a has a rectangular shape that slides and fits on the inner circumferential surface of a flat hollow member 2 with a rectangular cross section made of a hollow member made of a suitable material to be described later, for example, a rigid material. The fitting arm 1 is formed in the fitting part 1a1, and its base is formed in a rectangular shape having the same outer diameter as the outer diameter of the hollow member 2, and the fitting arm 1 is formed between the tip and the base.
A rectangular peripheral end surface 1 that abuts or abuts against the rectangular peripheral end surface 2a of the hollow member 2 on the outer periphery of the intermediate portion of a.
It is equipped with a2. The central fleshy part 3 of the joint member 1 has a screw hole 4 opening to the upper surface at the center of the cross shape, and a screw rod 5 for hanging is attached to this as will be described later.

According to the present invention, for example, a wide notch hole 6 is formed in the peripheral end surface 2a of each hollow member 2, along the upper end surface 2a1 thereof, and at least in the middle thereof. In the illustrated example, a long and wide notch hole 6 is formed over substantially the entire width of the upper end surface. Then, the hollow member 2 is fitted into each of the four fitting arms 1a of the cross-shaped joint member 1, and the circumferential end surface 1a2 of the outer periphery of the intermediate portion of the fitting arm 1a and the circumferential end surface 2a of the hollow member 2 are connected to each other. The screw holes 7, 7 previously provided on both sides of the fitting portion 1a1 of the fitting arm 1a and the both sides of the hollow member 2 are aligned, and the screws 8, 8 are inserted into these holes. The joining members 1 and 2 are screwed and fixed. According to the present invention, the upper end surface 2a1 side of the circumferential end surface 2a of the hollow member 2 is placed on one side of the abutting portion, that is, the abutting portion, between the fitting arm 1a of the joint member 1 and the hollow member 2. To,
A notch hole groove 6' is formed by the pre-formed wide band-shaped notch hole 6 and the flat surface of the fitting part 1a1 of the joint member 1 on the lower surface thereof, so that the curable sealing material 9 is entirely placed in this groove 6'. The resin is filled with the resin, hardened and fixed, and the joint between the two members is well sealed.

The curable sealing material 9 preferably has an initial viscosity in the range of 3,000 to 16,000 cp, and a two-component curable adhesive or the like can be used. In this way, according to the present invention, a large number of hollow members 2 of a certain length are joined via a large number of cross-shaped joint members 1, and a seal is sealed in the wide notch hole groove 6' provided at each joint. The material 9 is filled and sealed, and a lattice-shaped ceiling 10 for mounting an air filter is installed in the upper space of the room as shown in the fourth figure. In this case, a suspension screw 4, which is fixed to a support (not shown) at the upper part of the room and suspended, is screwed into the screw hole 3 opened in the upper surface of each cross-shaped joint member 1. It is installed on the lattice ceiling 10 of . Each of the lattice holes 11 is then closed, and an air filter 12 is placed on the periphery of the upper surface of the square frame having four circumferences. Reference numeral 13 indicates a U-shaped guide fixture for guiding and setting the air filter in a predetermined position when installing the air filter, which is attached in advance to the upper surface of the base of each fitting arm 1a of the joint member 1. In the drawings, reference numeral 14 indicates an annular gasket provided on the periphery of the lower surface of the air filter 12, and reference numeral 15 indicates a sealing material filled in the groove 17 of the lower surface of the gasket 16 and tightly bonded to one side of the upper surface of the lattice frame.

It goes without saying that the coupling member 1 includes, in addition to the above-mentioned cross-shaped one, an L-shaped or T-shaped one in which two or three fitting arms 1a are orthogonal to each other. do not have.

Further, in the above embodiment, the wide notch hole 6 was provided in the abutting peripheral end surface 2a of the hollow member 2, but as shown in FIG.
on the abutting peripheral end surface 1a2 side of a, that is, along the width direction of the upper end surface thereof, at least in the middle thereof,
A wide belt-like notch hole 6 may be formed by retreating toward the base, or a wide belt-like notch groove 6' may be formed between the abutting peripheral end surface 2a and the hollow member 2. Further, if necessary, the notch holes 6, 6 may be formed in both the upper end surfaces of the abutting end surfaces of the two members, and in this case, the width of the hole groove 6' at the joint portion can be significantly increased.

In addition, as shown in FIGS. 8 and 9, the above-mentioned cross shape,
Any T-shaped or L-shaped joint member 1 and hollow member 2
a pair of ribs 18 along both side edges of the upper surface of each;
18, when the notch hole groove 6' is filled with sealing material, the sealing material 9 does not flow and spread to both sides of the ribs 18, which is different from the case where the pair of ribs 18, 18 are not present. This facilitates injection and filling and enables sealing with the thick sealing material 9 placed on the upper surface of the notched hole groove 6'.

Furthermore, the sealing material 9 that has been overlaid in this way is
This has advantages such as preventing damage to the abutting surface of the gasket 16 of the air filter 12 placed on the upper surface thereof, and improving the sealing effect due to polymerization with the sealing material 14 inside the gasket 16.

In addition, in each of the above embodiments, the joint member 1
The fitting arm 1a of the joint member 1 is fitted into the inside of the hollow member 2, but conversely, the hollow member 2 is slidably fitted into the fitting arm 1a of the joint member 1, and the hollow member 2 A step, ie, a peripheral end surface, may be formed on the outer periphery, with which the opening peripheral end surface of the fitting arm 1a comes into contact. As the material for the joint member 1 and the hollow member 2, in addition to steel, metal materials such as aluminum, organic materials such as synthetic resin, and inorganic materials such as ceramic can be appropriately selected and used.

(Effect of the invention) As described above, according to the present invention, in an airtight joint device of a type in which a joint member and a hollow member are fitted and joined to each other, and a sealing material is interposed in the joint part, one of the joint members is attached to the joint part. At least one of the upper end surfaces of the abutting peripheral end surfaces of the two members on the side or both sides.
Since a wide notch groove is provided on one side and a curable sealing material is filled in this groove, the sealing performance of the joint is significantly improved compared to the previously proposed one.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a conventional device, and Fig. 2 is an exploded perspective view of a conventional device.
FIG. 3 is an exploded perspective view similar to FIG. 1 of an example of the implementation of the present invention, and FIG. 4 is a slope of a part of the air filter installed in a lattice shape similar to FIG. 2. 5 is a sectional view taken along the line -- in FIG. 2, FIG. 6 is a sectional view taken along the - line in FIG. 2, FIG. 7 is a perspective view of a part of another embodiment, and FIG. FIG. 9 is a perspective view of a portion of the modified example, and FIG. 9 is a sectional view taken along the line -- in FIG. 8. 1... Joint member, 1a... Fitting arm, 1a1...
Fitting portion, 2...Hollow member, 6...Notch hole, 6'...
...Notch hole groove.

Claims (1)

[Scope of utility model registration request] A hollow member is fitted to each of the fitting arms of a joint member having at least two fitting arms, and a hollow member is provided on the opening peripheral end surface of one of the two members and on the outer periphery of the intermediate portion of the other member. In an airtight joining device for a joint member and a hollow member for mounting a filter, the abutting peripheral end surfaces are butted against each other and a sealing material is applied between the upper end surfaces of the respective abutting peripheral end surfaces. A hollow space for mounting an air filter, which is formed by forming a wide notch groove along the upper end face on at least one of the upper end faces of each of the abutting peripheral end faces, and filling the notch groove with a curable sealing material and solidifying it. An airtight joint device between a member and a joint member.