JPH0218018Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention can be used, for example, when installing a transport device in a clean room, to isolate the transport device in an airtight state within the clean room.
The present invention relates to a prefabricated duct used for various purposes such as transportation equipment and air conditioning.

[Prior Art] Modern factories have adopted clean rooms that keep indoor dust to an extremely low level due to demands for more precision in manufactured equipment and improved voltage resistance characteristics. However, in the case of a factory, a conveyance device is essential for loading and unloading assembled parts and products, but the conveyance device has rollers and other worn parts, and dust such as metal powder is not generated from these parts. Inevitable. Therefore, placing the transport device in an exposed state inside the clean room will reduce the cleanliness inside the clean room.
Further, if it is attempted to remove all the dust generated from such a conveying device, there are problems such as the need for an air purifying device with a large capacity.

In view of these problems, the applicant has already made a proposal to maintain the cleanliness inside the clean room by installing an airtight duct inside the clean room and arranging a transport device inside the duct. There is. However, the conventionally known ducts are not suitable for storing equipment such as transport equipment inside, and there is a desire to develop ducts suitable for realizing such new proposals. There is.

That is, conventionally known ducts are generally made by bending thin steel plates into a rectangular tube shape and interlocking the joints using a seam folding machine.
However, since the constituent members of such a duct are not integrated, they have the disadvantage that they are difficult to assemble and transport on site. Furthermore, although it is suitable for relatively small and low-maintenance items such as air conditioning ducts, when storing various types of equipment such as conveyance devices inside, it is difficult to This is not preferable because the sides of the case cannot be opened freely. Of course, even with conventional ducts, it is possible to provide an inspection port on the side of the duct that can be opened and closed, and such attempts have been made, but in equipment such as transport equipment, maintenance is required. does not necessarily coincide with the inspection port, and in such a case, maintenance work becomes extremely difficult. Furthermore, the structure of the inspection port is clearly different from that of other parts of the duct, and there are drawbacks such as parts such as hinges and handles protruding outside, which can be dangerous, and it is difficult to ensure airtightness in that part. There is also.

In addition, in a clean room, there is airflow from the ceiling to the floor to circulate air to the purification equipment and to suppress floating dust, but conventional ducts are generally rectangular in shape. There was a lot of turbulence in the airflow at the corners, and there was a risk that this would encourage dust to float. Furthermore, a filter is installed on the ceiling of the clean room, but if the duct is heavy like conventional steel ducts, a special suspension frame must be placed in the ceiling for the duct, and in that area Another drawback was that the hanging material would pass through the filter, making installation difficult.

The above-mentioned problems are not only problems that occur in ducts for conveyance equipment in clean rooms, but also in ducts for air conditioning and other uses. The development of a simple duct was desired.

[Problems to be solved by the invention] This invention was proposed in view of the above-mentioned conventional technology, and can be used not only as a duct for conveyance equipment in a clean room, but also as a general duct, and is easy to assemble. The purpose of the present invention is to provide a prefabricated duct with excellent airtight performance that allows easy inspection of the inside and allows free inspection of the inside.

In addition to the above-mentioned points, the prefabricated duct described as an embodiment of the present invention does not disturb the airflow in the clean room when used as a duct for a conveyance device in a clean room, is lightweight, and can be installed anywhere on the ceiling. This allows it to be hung in any position.

[Means for Solving the Problems] In order to achieve the above object, the assembled duct of the present invention consists of vertically arranged left and right panels, and corner frames at the four corners that connect these panels. Furthermore, by using hook-and-loop fasteners as a means for fixing the panels to the corner frame, each panel can be attached to and detached from the corner frame with a single touch.

[Embodiment of the invention] An embodiment of the invention will be specifically described below with reference to the drawings.

Overall structure of the duct Figure 1 is a front view of the prefabricated duct of this embodiment.
The inside of the duct, which has a rectangular tube shape as a whole, is composed of three parts: an upper air chamber part A, a middle conveyed object passage part B, and a lower drive part passage part (exhaust part) C. Among these, an air filter 1 is provided at the boundary between the air chamber section A and the conveyed object passage section B, so that clean air is sent from the air chamber section A. Inside the conveyance object passage section B, a conveyance device support section 3 such as a bucket for supporting the conveyance object 2 is provided. It passes through the formed slit 6 and is attached to the conveyance device drive section 7 in the drive section passage section C. In the drive section passage section C, the drive section 7 and its running rail 8 are arranged. The frame connecting member 9, which is disposed within the driving portion passing portion C and supports the partition wall 5, is fixed to the inner surface of the duct in this embodiment by fastening means such as bolts and nuts.

Upper, lower, left, and right panels The structure of the assembly type duct of this embodiment that accommodates such a conveying device is that the upper, lower, left, and right panels 10 are assembled into a cylindrical shape using corner frames 20 at the four corners. Here, each panel 20 is made of a material that is lightweight and can ensure excellent airtightness, such as a composite material in which a heat insulating material or a honeycomb core is sandwiched between two aluminum plates, or a synthetic resin plate such as a transparent acrylic plate. Ru.

In this embodiment, as shown in the perspective view of FIG. 2, each panel 10 and corner frame 20 are assembled as a predetermined unit, and a connection frame 60 is provided at the end of each unit, so that the duct The load of the transport device inside can be received by this connection frame 60. Therefore, panel 10
Since no load is directly applied to the panel 10, the panel 10 is made of the above-mentioned lightweight material. Therefore,
If it is necessary to directly apply a load to the bottom panel, etc., that portion of the panel may be made of high-strength steel or may incorporate a predetermined reinforcing material.

Corner frame and panel fixing means Corner frame 20 provided at the four corners of the duct
As shown in the enlarged sectional view of Fig. 3, this is a frame body 21 having an arc shape (more precisely, the shape of a partial cross section of an eggshell), and panel fixing parts 22 are integrally provided at both ends of the frame body 21. In this embodiment, the corner frame 20 is made of an extruded aluminum member. In other words, if the corner frames at the four corners have an arcuate cross section with no corners as in this example, when this duct is placed in a place where there is airflow, such as in a clean room, the airflow will not be disturbed and dust will not be suspended. can be suppressed.

On the other hand, the panel fixing parts 22 at both ends of the corner frame 20 are provided with different orientations so that the panels 10 fixed thereto are at right angles to each other.
Each panel fixing part 22 is provided with a receiving edge 23 for overlapping the inner edge of the duct of the panel 10, and on the outer surface of this receiving edge 23, the panel 10
A surface fastener 23M that engages with the surface fastener 10M provided on the edge of the surface fastener 10M is provided, and both surface fasteners 1
The panel 10 and the corner frame 20 are fixed by engaging 0M and 23M.

Further, an airtight material 24 is provided in this portion to maintain airtightness with the surface of the panel 10. Note that the position of this airtight material may be opposite to that of the hook-and-loop fastener.
Further, the panel fixing portion 22 is provided with a positioning portion 25 for the end surface of the panel 10 at right angles to the receiving edge 23 .

Means for fixing members inside the duct As shown in the enlarged cross-sectional view of FIG. Mounting parts 41 to 45 are provided for fixing the frame connecting member 9 supporting the frame connecting member 5 . These mounting parts 41 to 45 have a dovetail groove shape into which a bolt head or nut can be inserted from the end of the corner frame 20, and are installed inside the duct using the bolts and nuts mounted here. The member is fastened to the corner frame 20.

Note that in this embodiment, the upper and lower panels 10
One bolt/nut mounting part 41 extending in the same direction as the panel and one bolt/nut mounting part 42 extending perpendicularly to the panel are provided near the fixed part of the left and right panels 10. , a bolt/nut mounting portion 4 extending in the same direction as the panel 10
3 and two bolt/nut mounting portions 44, 45 extending perpendicularly to the panel 10, the positions and numbers thereof are not limited to those of this embodiment. Further, the mounting portion does not necessarily have to be in the shape of a dovetail groove, but may be a groove or a protrusion to which other members can be fixed, as appropriate.

In addition, in this embodiment, the frame connecting member 9 that supports the partition wall 5 of the drive unit passing portion of the conveying device also serves to connect the corner frame 20 and the connecting frame 60 at the end of the duct unit. , the details of which will be described in connection frame 60
This will be explained in this section.

Duct holding means The duct that houses the transport device inside is hung from the ceiling inside the factory building or supported on a pedestal installed on the floor, but in this example, the duct is connected to a hanging bracket or pedestal. To do this, corner frame 2
A dovetail groove-shaped holding portion 50 into which a bolt head or nut can be inserted is integrally formed on the outer surface of the bolt.

In this embodiment, the position of this holding portion 50 is between the left and right panels 10 of the corner frame 20.
Although it is provided only near the fixed part of the panel, it may be provided near the fixed part of the upper and lower panels. Further, as long as the holding portion 50 is provided over the entire length of the corner frame 20 in the longitudinal direction, it is also possible to adopt an L-shaped or T-shaped protrusion in cross section, in addition to the above-mentioned dovetail groove. In that case, a key-shaped holding fitting is engaged with this holding part instead of a bolt or nut.

In this way, in this embodiment, the duct holding part 5
0 is provided over the entire length of the corner frame 20, making it possible to connect any part of the duct to the hanging bracket or frame, increasing the tolerance when installing the duct, making construction easier. Become. Moreover, since this holding part 50 is integrally formed with the corner frame 20 by extrusion molding of aluminum, the work is easier compared to the case where the corner frame is drilled, etc., and foreign objects are prevented during work. There are also advantages such as there is no risk of intrusion into the duct and there is no drawback that would cause a decrease in airtightness.

Connection Frame Since the duct of this embodiment is formed into units of a certain length, a connection frame 60 is provided at the end of each unit. That is, as shown in the perspective view of FIG. 4, at the end of each duct unit, the corner frame 20 extends to the end of the duct unit, but the end of each panel 10 is connected to the panel 10 of the adjacent unit. Since it is not possible to connect directly to the
0 is provided, and the ends of the panel 10 are fixed and sealed by this frame 60. Further, this connecting frame 60 is also used to connect units to each other by fastening with the connecting frames 60 of adjacent units using bolts, nuts, etc.

Therefore, in this connection frame 60, a fixing part 61 of the panel 10 using a hook and loop fastener is formed in the same way as the corner frame 20, and on the opposite side of the fixing part of the panel 10, a bolt hole for connection is provided. A connecting plate 63 with 62 is provided. Furthermore, an end plate 65 having bolt holes 64 for fixing the corner frame 20 and the connection frame 60 is provided at the end of the frame 60.

As is clear from FIG. 4, the corner frame 20 is also formed on the inner surface of this connection frame 60.
Similarly, a dovetail groove-shaped mounting part 66 is formed, and the frame connecting member 9 supporting the partition wall 5 of the drive unit passage section C of the conveying device using this mounting part 66 and the mounting part of the corner frame is connected to the duct. It is fixed on the inside with bolts and nuts. That is, two bolt holes 91 and 92 are formed in the side and bottom surfaces of the frame connecting material 9, respectively, one bolt hole 91 is connected to the attachment part 66 of the vertical and horizontal connection frame 60, and the other bolt hole 92 is connected to the corner. Mounting part 44 of frame 20
By tightening, the frame connecting material 9 connects and fixes the vertical and horizontal connecting frames 60 and the corner frame 20.

By using such a frame connecting material 9, the joint strength of each frame is further improved than simply tightening bolts between the end plate at the end of the connecting frame 60 and the corner frame 20, and a better duct can be obtained. can.

Intermediate Frame Furthermore, in cases where the duct has a long length as in the illustrated embodiment, a frame similar to the connecting frame 60 is provided at the intermediate portion of the duct, but is disposed inside the panel so as not to be exposed to the outside of the duct. An intermediate frame 70 is provided. This intermediate frame 70
For example, it has a rectangular tube shape, and an end plate is provided at the end thereof with bolt holes similar to those of the connection frame, and this end plate can be bolted to the mounting part 43 of the corner frame. , fixed to the corner frame. Further, a frame connecting member 9 is also provided to match the position of the intermediate frame 70, and connects the corner frame and the intermediate frame.

[Effects of the invention] As described above, in the assembled duct of this invention, the entire duct is composed of corner frames at the four corners and upper and lower panels, and the panels and corner frames can be attached and detached with a single touch using hook-and-loop fasteners. Therefore, it has the advantage of being extremely easy to construct compared to conventional steel ducts. Additionally, by constructing the duct from a corner frame and a panel, the corner frame to ensure strength can be made of lightweight material such as aluminum or aluminum alloy, and the panel can also be made of composite material such as synthetic resin or aluminum. , it is possible to significantly reduce the weight compared to conventional steel ducts. Furthermore, the panel of the duct of the present invention can be easily removed from the corner frame using hook-and-loop fasteners, making it possible to open the desired location within the duct and maintain maintenance even when various equipment is placed inside the duct. It also has the effect of making work easier.

[Brief explanation of the drawing]

Fig. 1 is a front view showing one embodiment of the prefabricated duct of the present invention, Fig. 2 is a perspective view of the same, and Fig. 3 is a
FIG. 4 is an enlarged sectional view of the corner frame of the duct shown in FIG. 4, and FIG. 4 is a perspective view showing the end of the duct shown in FIG. 10...Panel, 10M...Loop fastener, 2
0... Corner frame, 21... Frame body, 22... Panel fixing part, 23... Receiving edge, 2
3M...Loop fastener, 24...Airtight material, 25...
...Positioning section, 41-45... Mounting section, 50...
Holding part, 60... Connection frame, 61... Panel fixing part, 62... Bolt hole, 63... Connection plate,
64... Bolt hole, 65... End plate.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An assembly type duct consisting of upper, lower, left and right panels assembled into a cylindrical shape via corner frames at four corners, with panel fixing parts at both ends of each corner frame at right angles to each other. formed in the direction of
This panel fixing part is provided with a receiving edge that supports the panel from the inside, and when one side of the hook-and-loop fastener provided on this receiving edge and the other side of the hook-and-loop fastener provided on the panel engage with each other, the panel A prefabricated duct characterized in that the and corner frame are fixed. (2) The prefabricated duct according to claim 1, wherein the corner frame is made of extruded aluminum material. (3) The prefabricated duct according to claim 1, in which the corner frame has an arcuate cross section and has no corners on its outer surface that disturb airflow. (4) Utility model registration claim 1, in which the corner frame has a holding part on its outer surface that is used for fixing the duct to the ceiling or a frame, and is integrally provided along the longitudinal direction of the corner frame. Prefabricated duct as described in section.