JPH0622423U - Clean room ceiling foundation structure - Google Patents

Abstract

(57) [Summary] [Purpose] The lower surfaces of the main mold material and the sub-mold material forming the ceiling of the clean room are flush with each other, thereby improving the cleanliness of the clean room. [Structure] A stepped shoulder portion 22b is formed on an upper portion of a side surface portion 22a of the main mold member 22. The connecting member 40 has a plate-shaped vertical portion 40a and a locking portion 4 having a shape projecting in one direction orthogonal to the vertical portion 40a and capable of locking with the shoulder portion 22b of the main mold member 22.
0b and a plate-shaped support portion 40c projecting in the other direction orthogonal to the vertical portion 40a, and the locking portion 40b is the main mold member 22.
The vertical portion 40a is locked to the shoulder portion 22 of the main mold member 2
It is fixed to the side surface portion 20a of No. 0. A contact member 44 having a Z-shaped cross section is provided at an end of the sub-mold material 24 so as to make the lower surface of the sub-mold material 24 and the lower surface of the main mold material 22 flush by contacting with the support portion 40c of the connecting member 40. The contact member 44 is fixed to the supporting portion 40c of the connecting member 40 in a state of being in contact with the supporting portion 40c.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 TECHNICAL FIELD The present invention relates to an under-ceiling structure of a clean room in which an above-ceiling space is configured as an airflow passage.

[0002]

[Prior art]

 An example of the above-described clean room ceiling base structure is shown in Japanese Utility Model Publication No. 2-48019, and the structure shown in FIG. 4 is known. That is, a horizontally extending channel member 14 is hung from a ceiling 10 of a skeleton via a stud bolt 12, and a ceiling panel 18 is laid below the channel member 14 via a connecting metal fitting 16 to The panel 18 blocks dust falling from the ceiling 10 of the frame from entering below the ceiling panel 18. Further, the ceiling panel 18 suspends a plurality of rectangular cylindrical main mold members 22 via suspension bolts 20 so as to extend in parallel to each other in the horizontal direction. Between the main mold members 22, a plurality of rectangular cylindrical sub mold members 24 are installed so as to extend parallel to each other in the horizontal direction orthogonal to the main mold members 22.

The main mold member 22 and the sub mold member 24 have the same height, and a square ceiling plate 26 and a filter member 28 are placed and supported on the upper surfaces of the main mold member 22 and the sub mold member 24. There is.

FIG. 5 shows a joining structure of the main mold member 22 and the sub mold member 24. The side surface portion 22a of the main mold member 22 has a vertical portion 30a and a lower end of the vertical portion 30a toward the sub mold member 24. A connecting member 30 having an L-shaped cross section including a protruding horizontal portion 30b is fixed by a fastening bolt 32 inserted into the vertical portion 30a. On the other hand, the end of the upper surface portion 24a of the sub-mold material 24 is notched, and the upper surface portion 24a of the sub-mold material 24 facing the cutout portion has a vertical portion 34a and a vertical portion 34a from the upper end of the vertical portion 34a. An abutting member 34 including an upper horizontal portion 34b projecting in one orthogonal direction and a lower horizontal portion 34c projecting from the lower end of the vertical portion 34b in the other direction orthogonal to the vertical portion 34b is inserted into the upper horizontal portion 34b. The fastening bolts 36 are fixed. The lower horizontal portion 34c of the contact member 34 is placed on the horizontal portion 30b of the connecting member 30, and the lower horizontal portion 34c of the contact member 34 and the horizontal portion 30b of the connecting member 30 are connected by the connecting bolt 38. By being fastened, the end portion of the sub-mold material 24 is held by the side surface portion 22 a of the main mold material 22.

[0005]

[Problems to be solved by the device]

 However, in the structure as described above, since the upper surface of the upper horizontal portion 34b of the contact member 34 is in contact with the lower surface of the upper surface portion 24a of the sub-mold member 24, the space between the contact member 34 and the sub-mold member 24 is small. Although the positional relationship in the vertical direction is regulated, the connecting member 30 is fixed to the main mold member 22 with the vertical portion 30a of the connecting member 30 being in contact with the side surface portion 22a of the main mold member 22. The vertical positional relationship between the main mold member 22 and the main mold member 22 is not regulated.

Therefore, since the vertical positional relationship between the main mold member 22 and the sub mold member 24 is not accurately determined, if the mounting accuracy is poor, the lower surface of the main mold member 22 and the lower surface of the sub mold member 24 are flush with each other. However, a step often occurs. Therefore, not only does the appearance of the ceiling structure of the clean room look bad, but also air flows from the step between the main mold material 22 and the sub mold material 24, and dust also flows along with it, so the cleanliness of the clean room is improved. There is a problem that it will decrease.

[0007] Further, if an attempt is made to improve the cleanliness of the clean room, there is a problem that a large amount of sealing material is required to fill the step between the main mold material and the sub mold material and that dust is attached to the seal material. is there.

In view of the above, it is an object of the present invention to accurately position the main mold member and the sub mold member with their lower surfaces flush with each other, thereby improving the cleanliness of the clean room. .

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention forms a stepped shoulder on the upper side surface of the main mold member, and attaches the connecting member to the side surface of the main mold member with a part of the connecting member placed on the shoulder part. By fixing to, the vertical positional relationship between the main mold material and the sub-mold material is regulated.

Specifically, the solution means taken by the present invention is to provide a plurality of rectangular cylindrical main mold members suspended from the ceiling of the body and extending in parallel to each other in the horizontal direction, and to erected between the plurality of main mold members. And a plurality of rectangular cylindrical sub-mold members extending in parallel to each other in a direction orthogonal to the plurality of main mold members, and is intended for a sub-ceiling structure of a clean room for mounting and supporting a rectangular ceiling plate and a filter material. A plate-shaped vertical portion and a locking portion protruding from the vertical portion in one direction orthogonal to the vertical portion and capable of being locked to the shoulder portion on the upper side surface of the main mold member, and the vertical portion orthogonal to the vertical portion A connecting member that is fixed to the side surface of the main mold member in a state in which the locking part is locked to the shoulder part of the main mold member Therefore, the end of the sub-shaped member abuts on the supporting portion of the connecting member. Is provided with a plate-shaped contact portion that makes the lower surface of the sub-mold material and the lower surface of the main mold material flush with each other, and the corresponding contact portion is in contact with the support portion of the connecting member. It is configured to be fixed to the holding part.

[0011]

[Action]

 With the above structure, since the vertical portion of the connecting member is fixed to the side surface of the main mold member with the engaging portion of the connecting member being locked to the shoulder portion of the main mold member, The downward positional relationship is restricted by the shoulder portion of the main mold member and the locking portion of the connecting member.

In addition, an end portion of the sub-mold material is provided with an abutting portion that abuts against the support portion of the connecting member to make the lower surface of the sub-mold material and the lower surface of the main mold material flush with each other. Since it is fixed to the supporting portion of the member while being in contact with the supporting portion, the vertical positional relationship between the sub-mold material and the connecting member, that is, the vertical positional relationship between the sub-mold material and the main mold material is The lower surface of the sub-mold material and the lower surface of the main mold material are regulated so as to be flush with each other.

[0013]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

The overall structure of the ceiling base structure of the clean room and the structure of the main mold member 22 and the sub mold member 24 according to the embodiment of the present invention are the same as those described in the section of the related art with reference to FIG. Therefore, detailed description is omitted.

FIG. 1 shows a joined state of the main mold member 22 and the connecting member 40, and a stepped shoulder portion 22b is formed on an upper portion of the side surface part 22a of the main mold member 22. On the other hand, the connecting member 40 has a plate-shaped vertical portion 40a and a thickness equal to the step size of the shoulder portion 22b protruding from the upper end of the vertical portion 40a in one direction orthogonal to the vertical portion 40a, that is, in the direction of the main mold member 22. And a plate-shaped support portion 40c projecting from substantially the vertical center of the vertical portion 40a in the other direction orthogonal to the vertical portion 40a, that is, in the direction opposite to the main mold member 22, The vertical portion 40a of the connecting member 40 is supported by the side surface portion 22a of the main mold member 22, and the locking portion 40b of the connecting member member 40 is locked by the shoulder portion 22b of the main mold member 22. It is fixed by a fastening bolt 42 that is inserted in the lower part.

Therefore, the vertical positional relationship between the main mold member 22 and the connecting member 40 is such that the shoulder portion 22b of the main mold member 22 and the locking portion 40b of the connecting member 40 locked to the shoulder portion 22b. Since it is determined by the positional relationship of, it is regulated accurately.

Further, since the fastening bolt 42 is inserted through the portion of the vertical portion 40a below the support portion 40c, the support portion 40c does not become an obstacle when screwing the fastening bolt 42, Since the engaging portion 40b of the connecting member 40 is engaged with the shoulder portion 22b of the main mold member 22, the work of attaching the connecting member 40 to the main mold member 22 becomes easy.

Furthermore, since the thickness of the locking portion 40b of the connecting member 40 is the same as the step size of the shoulder portion 22b of the main mold material 20, the upper surface of the locking portion 40b and the upper surface of the main mold material 20 are surfaces. Since it becomes one, a gap is not formed between the main mold material 20 and the ceiling plate 26 and the filter material 28 placed on the main mold material 20, and the cleaning degree is improved.

In the above embodiment, the main mold member 20 and the sub mold member 24 have a double prismatic shape, but the presence or absence of the internal partition and the shape thereof are not limited to those of this embodiment, and the point is that the main mold member 20 and It is sufficient that the sub-mold material 24 and the sub-mold material 24 have the same height.

FIG. 2 shows a joining state of the sub-mold material 24 and the abutting member 44 as an abutting portion, and FIG. 3 shows a joining state of the connecting member 40 and the abutting member 44. The contact member 44 includes a vertical portion 44a, a plate-like upper horizontal portion 44b projecting from the upper end of the vertical portion 44a in one direction orthogonal to the vertical portion 44a, that is, toward the sub-mold member 24, and a lower end of the vertical portion 44b. From a vertical horizontal portion 44b in the other direction, that is, a plate-shaped lower horizontal portion 44c projecting in a direction opposite to the sub-mold material 24, and the upper surface of the upper horizontal portion 44b is the lower surface of the upper surface portion 24b of the sub-mold material 24. The lower surface of the main mold member 20 and the lower surface of the auxiliary mold member 24 are flush with each other when they abut and the upper surface of the lower horizontal portion 44c abuts the lower surface of the support portion 40c of the connecting member 40. Then, the contact member 44 has the lower surface of the upper horizontal portion 44b in contact with the lower surface of the upper surface portion 24a of the sub-mold member 24, and the upper surface portion of the sub-mold member 24 is fastened by the fastening bolts 46 inserted in the upper horizontal portion 44b. It is attached to 24a.

The main mold member 22 and the sub-mold member 24 are in contact with the supporting portion 40c of the connecting member 40 with the lower surface of the supporting member 40c of the connecting member 40 being in contact with the upper surface of the lower horizontal portion 44c of the contact member 44. The contact member 44 and the contact member 44 are connected to each other by being fastened by fastening bolts 48. Therefore, the lower surface of the main mold member 22 and the lower surface of the sub mold member 24 are flush with each other.

Although the shoulder 22b of the main mold member 20 is always provided with a step in the embodiment, it may be a simple rectangular tube-like mold member having no step, in which case, the end of the ceiling plate 26 may be cut out, Means may be adopted such that the locking portion 40b of the connecting portion 40 is thinned and the sealing material is filled, so that no gap is created between the contact portion between the ceiling plate 26 and the main mold member 20.

[0023]

[Effect of device]

 As described above, according to the ceiling underlay structure of the clean room according to the present invention, the vertical portion of the connecting member is fixed to the side surface of the main mold member while the engaging portion of the connecting member is locked to the shoulder portion of the main mold member. Since the end of the sub-mold material is provided with an abutting portion that makes the lower surface of the sub-mold material and the lower surface of the main mold material flush by contacting the supporting portion of the connecting member, Since the vertical positional relationship with the main mold material is regulated so that the lower surface of the sub mold material and the lower surface of the main mold material are flush with each other, the lower surface of the sub mold material and the lower surface of the main mold material are Always be on the same level.

Therefore, according to the present invention, the main mold member and the sub mold member are accurately positioned with their lower surfaces flush with each other, so that there is a gap between the lower surface of the main mold member and the lower surface of the sub mold member. Since it is almost impossible to do so, the sealing material for filling the gap becomes unnecessary or the amount is extremely small, and the cleanliness of the clean room is improved and the appearance of the ceiling of the clean room is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a joined state of a main mold member and a connecting member in a ceiling base structure of a clean room according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a joined state of a sub-mold member and an abutting member in the ceiling base structure of the clean room.

FIG. 3 is a cross-sectional view showing a joined state of a main mold member and a sub mold member in the ceiling base structure of the clean room.

FIG. 4 is a cross-sectional view showing the overall structure of a conventional clean room ceiling structure.

FIG. 5 is a cross-sectional view showing a joined state of a main mold member and a sub mold member in a conventional ceiling structure of a clean room.

[Explanation of symbols]

 10 Ceiling 12 Implant Bolt 14 Channel Member 16 Connecting Metal Fitting 18 Ceiling Panel 20 Hanging Bolt 22 Main Form Material 22a Side Part 22b Shoulder Part 24 Sub-Form Material 24a Top Part 26 Ceiling Plate 28 Filter Material 40 Coupling Member 40a Vertical Part 40b Locking Part 40c Support Part 44 Contact member (contact part) 44a Vertical part 44b Upper vertical part 44c Lower vertical part

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location 7521-2E E04B 5/55 B

Claims (1)

[Scope of utility model registration request] 1. A plurality of rectangular cylindrical main mold members suspended from the ceiling of a frame and extending parallel to each other in the horizontal direction, and a plurality of main mold members installed between the main mold members in a direction orthogonal to the main mold members. Consisting of a plurality of sub-shaped members in the shape of rectangular tubes extending parallel to each other,
A ceiling base structure for a clean room in which a rectangular ceiling plate and a filter material are placed and supported, wherein a plate-shaped vertical portion and a shoulder on the upper side surface of the main mold member protruding from the vertical portion in one direction orthogonal to the vertical portion And a plate-shaped support portion projecting from the vertical portion in the other direction orthogonal to the vertical portion, and the locking portion is locked to the shoulder portion of the main mold member. The vertical portion is provided with a connecting member that is fixed to the side surface of the main mold member in a state where the vertical portion is in contact with the supporting portion of the connecting member at the end of the sub mold member, and And a plate-shaped abutting portion that makes the lower surface of the main mold member flush with each other, and the abutting portion is fixed to the supporting portion of the connecting member while being in contact with the supporting portion. The clean room ceiling base structure.