JP2541306Y2 - Duct joiner - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct, and more particularly, to a joiner used for a duct having a duct wall formed by joining a plurality of plates.

Conventionally, there is a duct joiner shown in FIG. In this joiner A, a slot 100 is formed by a pair of support plate portions 110, 110 and a connecting portion 120 that integrates them.
0 is inserted into the end of the plate 200. Then, as shown in FIG.
In the joiner A in which the slots 100, 100 are formed on both sides of the plate body 20, a plate 20 is provided in each of the slots 100, 100.
By inserting the ends of 0 and 200 and attaching the insertion portions with an adhesive, the plate bodies 200 and 200 are air-tightly connected to each other via the joiner A, thereby forming a duct wall.

[0003] When a duct is manufactured using such a joiner A, compared to the case of employing a method in which plates are welded and joined together, the manufacturing is facilitated and the manufacturing does not require much skill. There is an advantage.

When the joiner A is made of a synthetic resin, it is advisable to manufacture the synthetic resin such as a polyvinyl chloride resin by extruding the resin in a special shape.
The groove width dimension of 00 may not be as designed.
Specifically, in the case of the joiner A having the H-shaped cross section as shown in FIG. 14, if only the case where the groove width dimension of the slots 100 on both sides of the connecting portion 120 is larger or smaller than the design value occurs. However, there may be a case where a difference occurs between the groove width dimensions of the slots 100 on both sides. Therefore, in those cases, the groove width of the slot 100 does not match the thickness of the plate 200 for forming the duct wall, and the groove width is too large, and the plate 200 inserted into the slot 100 is not used. May easily come off, or the groove 200 may be too small to insert the plate 200 into the slot 100. Further, even when the groove width dimension of the slot 100 is as designed, a similar situation may occur due to variations in the thickness dimension of the plate.

On the other hand, the thickness dimension of the plate 200 and the slot 100
Even if the groove width dimension is within the tolerance range, the plate member 20 may be inserted into the slot 100 depending on the dimensions.
There are cases where 0 is easily inserted and cases where it is difficult to insert 0.

As described above, according to the relationship between the groove width dimension of the slot 100 and the thickness dimension of the plate 200, the conventional joiner A is fitted when the end of the plate 200 is inserted into the slot 100. There is a drawback that the state is difficult to be constant, and the end of the plate 200 cannot be inserted into the slot 100 in some cases. Further, it is necessary to individually form the joiners A for each thickness dimension of the plate 200, and there is a disadvantage that the types of the joiners A increase.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an object to form a slot having a groove width dimension suitable for arranging a plate according to the thickness of the plate. It is an object of the present invention to provide a duct joiner which can make the fitting state of the plate to the slot constant regardless of the thickness of the plate.

[0008]

SUMMARY OF THE INVENTION A duct joiner according to the present invention protrudes from a groove in a direction intersecting the depth direction of the groove to form a duct surface for forming a duct wall. A main member integrally provided with a support plate portion superposed on one of the surfaces, a protruding portion inserted into the groove portion of the main member up to a predetermined depth of the concave groove, and a protruding portion from the protruding portion. And a sub-member integrally protruding in the intersecting direction and having a support plate portion superposed on the other surface of the front surface or the rear surface of the plate body.

The joiner used here is not only used for joining plates for forming a duct wall, but also for forming a flange or a rib for forming a reinforcing rib. Equivalent parts are integrated,
Also included are those used for the purpose of connecting the flange equivalent portion and the rib equivalent portion to the plate.

[0010]

In this configuration, for example, the projection of the sub member is inserted into the groove of the groove of the main member, the support plate of the main member is overlapped on the surface of the plate, and the support plate of the sub member is connected to the plate. When overlapped on the back surface, the plate is inserted into a groove formed by the groove, the protrusion inserted into the groove of the groove, and the pair of support plates. Then, the interval between the pair of supporting plate portions, that is, the groove width dimension of the above-mentioned slot becomes a dimension corresponding to the thickness of the plate body. Therefore, even if there is variation in the thickness dimension of the plate, or even if the thickness of the plate is different, the variation in the dimension and the difference in the thickness are caused by the change in the insertion width of the projecting portion with respect to the groove of the groove. It is absorbed by the change in the groove width dimension of the hole, and a proper fitting state is always obtained.

[0011]

1 shows a joiner A according to an embodiment of the present invention.
Duct D made of synthetic resin manufactured using A1, A2 and A3
FIGS. 2 to 6 are cross-sectional views of a portion where the joiner is employed in the duct.

The duct D includes a rectangular plate P and a first joiner A1 for connecting the plate P in the longitudinal direction of the duct D.
And a second joiner A2 for connecting the plate P to a cylindrical shape.
And a third joiner A3 for providing a flange F at the end of the duct D. The first joiner A1, the second joiner A2, and the third joiner A3
Is made by cutting a long body continuously extruded with a synthetic resin such as a polyvinyl chloride resin into a predetermined size. The plate P is also made of a synthetic resin such as a polyvinyl chloride resin.

As shown in FIGS. 2 and 3, the first joiner A1 includes a main member 1 and a sub member 2. The main member 1 has a groove 11 having a concave groove 13 formed between two projecting pieces 12, 12, and a support plate protruding from the groove 11 in a direction orthogonal to the depth direction of the concave groove 13. Part 14
The support plate 14 is provided integrally on both sides of the groove 11. The sub-member 2 has a protruding portion 21 and a supporting plate portion 22 protruding from the protruding portion 21 in a direction perpendicular to the protruding direction. The supporting plate portions 22 are integrally provided on both sides of the protruding portion 21. I have.

In the main member 1 and the sub member 2 described above,
The projecting portion 2 of the sub member 2 is provided in the concave groove 13 of the groove portion 11 of the main member 1.
1 is plugged in. Further, the support plate portion 1 of the main member 1
4 and 14 are superimposed on the end surfaces of the plates P, P arranged on both sides of the groove 11, and the support plate 2 of the sub-member 2
2, 22 are superimposed on the rear surfaces of the ends of the plate members P, P. In this state, the main member 1 and the sub member 2 are combined to form an H-shaped cross-section, and the groove 11, the protrusion 21 inserted into the groove 13 of the groove 11, and a pair of support members on both sides of the plate P The slots 3 are formed by the plate portions 14 and 22, and the plate P is inserted into the slots 3.

When the plates P, P are connected by the first joiner A1 in such a structure, the plate P is sandwiched between the support plate 14 of the main member 1 and the support plate 22 of the sub-member 2. The two members 1 and 2 so that the groove 1
When the protrusion 21 is pushed into the support member 3, the mutual interval between the support plate portion 14 of the main member 1 and the support plate portion 22 of the sub member 2, that is, the groove width dimension H of the slot 3 becomes the thickness dimension of the plate body P. Adjusted naturally to the appropriate dimensions. As can be seen from a comparison between FIGS. 2 and 3, when the plate P is thick (FIG. 2), the groove width dimension H of the slot 3 is larger than when the plate P is thin (FIG. 3). Correspondingly, the insertion width of the protrusion 21 into the groove 13 is reduced. Therefore, even if the thickness of the plate body P varies, the variation of the dimension is caused by the variation of the insertion width of the protruding portion 21 into the concave groove 13 and the groove width dimension H of the groove 3.
And the first joiner A1 and the plate P are always in a proper fitting state.

When the plate P is bonded to the first joiner A1, the adhesive 5 is applied to the inner surface of the main member 1 and the inner surface of the sub member 2 before inserting the protrusion 21 into the concave groove 13 of the groove 11. If so, the groove 13 of the groove 11
When the protruding portion 21 is pushed into the main body 1 and the plate P is sandwiched between the support plates 14 and 22, an adhesive is applied between the inner surface of the main member 1 and the plate P and the inner surface of the sub member 2 and the plate P. The plate 5 and the main member 1 and the sub-member 2 are bonded by the adhesive 5. Also, the inner surface of the groove 13 or the protrusion 21
When the adhesive 5 has been applied to the surface of the groove, the groove 11 and the protruding portion 21 are bonded with the adhesive 5. As the adhesive 5, a filling-type adhesive, for example, a silicone-based adhesive such as silicone or denatured silicone, thiochol, or a solvent-based adhesive in which a resin is dissolved can be suitably used. The air-tightness and liquid-tightness of the joint between the joiner A1 and the plate P are reliably maintained.

The main member 1 has a length corresponding to the width of the duct wall of the duct D to be manufactured shown in FIG. 1, and its end is cut off at 45 ° as shown in FIG. I have. The sub-member 2 also has a length corresponding to the width of the duct wall, and its end is omitted at 45 °. Then, in the corner portion of the duct D, as shown in FIG.
Each is abutted at 45 °. These butted portions are joined in an air-tight or liquid-tight manner by welding or bonding using an adhesive. In order to form such a butt structure, the sub-member 2 may be assembled first on the back side of the plate P, and then the main member 1 may be assembled on the front side of the plate P.

FIG. 5 shows a specific configuration of the second joiner A2. The second joiner A2 is used for connecting the plate body P into a tubular shape to form a rectangular tubular duct wall in the duct D in FIG. In the second joiner A2, the point that the main member 1 is constituted by the sub member 2 and the main member 1 is constituted by the groove portion 11 and the support plate portions 14 integrally formed on both sides thereof, 2 is the protrusion 2
1 and a support plate 2 integrally formed on both sides of the protrusion 21
2 and 22, the protrusion 21 is the concave groove 1 of the groove 11.
3 is the same as the first joiner A1 described above. However, the support plates 14, 14 of the main member 1 in the second joiner A2 protrude in a direction intersecting at 45 ° with respect to the depth direction of the concave groove 13 of the groove 11, and the support plates 14, 14 form a right angle. And the supporting plate portions 22, 22 of the sub-member 2
3 differs from the first joiner A1 in that the support plate portions 22 project at a right angle to the direction in which the support plate portions 3 intersect at 45 °.

Also in the second joiner A2, the projecting portion 21 of the sub-member 2 is inserted into the concave groove 13 of the groove 11 of the main member 1, and the support plate portions 14, 14 of the main member 1 are arranged on both sides of the groove 11. The support plates 22, 22 of the sub-member 2 are superimposed on the back surfaces of the ends of the plate members P, P. In this state, the groove 11 and the back 1
The slot 3 is formed by the projecting portion 21 inserted into the one concave groove 13 and the pair of support plate portions 14 and 22 on both sides of the plate P, and the plate P is inserted into the groove 3. Become. Therefore, in the same manner as described for the first joiner A1, the two members 1 and 2 are held so that the plate P is sandwiched between the support plate portion 14 of the main member 1 and the support plate portion 22 of the sub member 2.
Is pressed to push the projecting portion 21 into the concave groove 13 of the groove portion 11, the groove width dimension H of the slot 3 is naturally adjusted to a dimension corresponding to the thickness dimension of the plate P. For this reason, the plate P
Even if there is a variation in the thickness dimension of the groove 3, the variation in the dimension is absorbed by a change in the groove width dimension H of the slot 3 accompanying a change in the insertion width of the protruding portion 21 with respect to the concave groove 13 of the groove portion 11,
The second joiner A2 and the plate P are always in a proper fitting state. Further, the second joiner A2 and the plate P, or the main member 1
The sub-member 2 is bonded with the adhesive 5 described above as necessary.

As can be inferred from FIG. 1, one end of the main member 1 of the second joiner A2 abuts against the corner of the main member 1 of the first joiner A1, and one end of the sub member 1 Are butted against the corners of the sub-member 1 of the first joiner A1, and these butted portions are joined in a gas-tight or liquid-tight manner by welding or an adhesive.

FIG. 6 shows a specific configuration of the third joiner A3. The third joiner A3 is used for providing a flange F at an end of the duct D in FIG. In the third joiner A3, the main member 1 is composed of the sub-member 2 and the main member 1 is composed of the groove 11 and the support plate 14, and the sub-member 2 is composed of the protruding portion 21 and the protruding portion 21. The first jointer A1 and the second jointer described above are different from the first jointer A1 and the second jointer in that the projection 21 is configured to be inserted into the concave groove 13 of the groove 11 and the like.
Same as Joiner A2. However, in the third joiner A3, the point that the support plate portion 14 of the main member 1 protrudes only to one side of the groove portion 11, the point that the support plate portion 22 of the sub member 2 protrudes only to one side of the protrusion portion 13, and the main member The first jointer A1 and the second jointer A1 are such that a flange-equivalent portion F1 protrudes outward at right angles from the root portion of the first support plate portion 14.
It is different from Joiner A2.

Also in the third joiner A3, the protrusion 21 of the sub member 2 is inserted into the concave groove 13 of the groove 11 of the main member 1, and the support plate portion 14 of the main member 1 is arranged on one side of the groove 11. The support plate 22 of the sub-member 2 is overlapped on the end surface of the plate P, and the support plate 22 of the sub-member 2 is overlapped on the back surface of the end of the plate P.
In this state, the groove 11, the projecting portion 21 inserted into the concave groove 13 of the groove 11, and the pair of support plate portions 1 on both sides of the plate P
4 and 22, the slot 3 is formed, and the plate P is inserted into the slot 3. Therefore, in the same manner as described for the first joiner A1 and the second joiner A2, both members are held so that the plate P is sandwiched between the support plate portion 14 of the main member 1 and the support plate portion 22 of the sub member 2. 1,
When the protrusion 2 is pressed into the concave groove 13 of the groove 11 by pressing the groove 2, the groove width dimension H of the slot 3 is naturally adjusted to a dimension corresponding to the thickness dimension of the plate P. For this reason, even if there is a variation in the thickness dimension of the plate P, the variation in the dimension is absorbed by a change in the groove width dimension H of the slot 3 due to a change in the insertion width of the protruding portion 21 into the groove portion 11, The joiner A3 and the plate P are always in a proper fitting state. Further, the third joiner A3 and the plate member P, and the main member 1 and the sub member 2 are bonded with the above-mentioned adhesive 5 as needed.

The main member 1 of the third joiner A3 has a length corresponding to the width of the duct wall of the duct D in FIG.
Its end is cut off at 45 °. The sub-member 2 also has a length corresponding to the width of the duct wall, and its end is omitted at 45 °. Then, in the corner portion of the duct D, the main members 1 and the sub-members 2 are each 45 °.
As a result, the flange-equivalent portions F1 of the third joiners A3 are connected to each other in a rectangular annular shape as shown in FIG. The butted portions are joined in an air-tight or liquid-tight manner by welding or bonding using an adhesive.

FIG. 7 shows a state in which the flanges F of different ducts are butted together, and the flanges F, F are connected to each other using a bolt 61 and a nut 62 screwed into the bolt 61. A packing 7 is sandwiched between the flanges F to ensure airtightness or liquid tightness. Further, the bolts 61 are inserted into bolt insertion holes 63 formed at a plurality of locations of the flanges F, F.

Each of the first joiner A1, the second joiner A2, and the third joiner A3 has a configuration in which the projection 21 of the sub member 2 is inserted into the groove 13 of the groove 11 of the main member 1. The inner surface of the groove 13 and the surface of the protrusion 21 are flat. Therefore, even if the groove width dimension of the concave groove 13 and the thickness of the protruding portion 21 are finished with high precision to the extent that both are press-fitted, the adhesive 5 is hardened and the adhesive strength is sufficiently exhibited. Until the main member 1 and the sub-member 2 need to be pressed against the plate P side, the ease and speed of the duct manufacturing operation may be impaired in some cases.

The modification shown in FIGS. 8 and 10 is a joiner with less such concern. That is, in these, the inner surface of the groove portion 11 of the main member 1 is formed as a saw-toothed uneven surface 15, and the surface of the protruding portion 21 of the sub member 2 is also formed as a saw-toothed uneven surface 24. According to this, when the projecting portion 21 is inserted into the concave groove of the groove portion 11, the two concave and convex surfaces 15 and 24 are engaged with each other and are prevented from being pulled out. 21 does not escape from the concave groove of the groove portion 11 and the groove width dimension H does not expand. FIG. 8 shows a modification of the first joiner A1.
FIG. 10 is a modification of the second joiner A2.

FIG. 9 shows another modification in which there is little concern about the above. Although not shown, the third joiner A3 can be similarly modified. In this embodiment, the auxiliary member 2 is divided into two members 2a and 2b at the center of the protrusion 21 and the protrusion 2 inserted into the groove of the groove 11 of the main member 1.
Rigid elastic filling 25 such as synthetic resin between 1 and 21
Is press-fitted. According to this, the projecting portions 21 and 21 come into strong contact with the inner surface of the groove portion 11 due to the restoring force of the filler 25, and the projecting portions 21 and 21 are prevented from coming off. Therefore, after the filling 25 is press-fitted, the protrusions 21 and
1 does not escape from the concave groove of the groove portion 11 and the groove width dimension H does not expand. In the modification shown in FIG. 9, the inner surface of the groove 11 may have a saw-toothed uneven surface, and the surfaces of the protruding portions 21 and 21 may have a saw-toothed uneven surface. The action is more reliably exerted.

FIG. 11 shows a modified example of the first joiner A1. The first joiner A1 provided with a reinforcing rib equivalent portion R1.
It is one. The reinforcing rib equivalent portion R1 is the protrusion 2 of the sub-member 2.
1 is provided on the back surface. According to this, when the duct is manufactured by sandwiching the panel between the main member 1 and the sub-member 2, the ribs formed by the reinforcing rib equivalent portions R1 are continuously provided in a rectangular annular shape around the duct. , The duct is reinforced, and the flattening resistance is particularly excellent.

FIG. 12 shows a modification of the third joiner A3, in which a flange-equivalent portion F2 is provided on the sub-member 2. The sub-member 2 is provided with a flange-equivalent portion F2 on the opposite surface of the protruding portion 21. When the duct is manufactured, the flange-equivalent portion F2 is connected in a rectangular ring to form a flange.

When it is desired to increase the width of the duct to be manufactured, the two panels may be bonded in the width direction so that the length direction of the first joiner A1 matches the length direction of the duct.

The duct D in FIG. 13 is manufactured using the first joiner A1 shown in FIG. 2, the first joiner A11 shown in FIG. 11, the third joiner A3 shown in FIG. . The plate P is bent into a rectangular tube shape, and its end is sandwiched by a first joiner A1 to form a tube, and first joiners A1 arranged above and below the tube.
The plate P is sandwiched and bonded by the first or third joiner A3. In this duct D, the first joiner A1 is used in accordance with the longitudinal direction. 1st joiner A1
No. 1 is a rib R at a portion R1 corresponding to a reinforcing rib, and the rib R
With this, the duct D is annularly surrounded to improve the flattening strength. The third joiner A3 is a portion F corresponding to the flange of the sub member.
Reference numeral 2 denotes a flange F, and the flange D surrounds the duct D in an annular shape to improve the flattening strength. This flange F serves as a joint portion with another duct. Note that the join of each joiner is a 90 ° abutment in which the side end of one joiner is abutted against the end of the other joiner. Also in this duct production, since the plate P is sandwiched between the seed member 1 and the sub-member 2 and bonded, the change in the plate thickness dimension of the plate P is determined by the insertion width of the projecting portion 21 with respect to the groove of the groove 11. The change can be absorbed to obtain an appropriate fitting state.

In the embodiment and the modified examples described above, the main member 1 is assembled on the front side of the plate P and the sub-member 2 is assembled on the back side of the plate P. The sub-member 2 may be assembled on the front side of the plate body P while being assembled on the back side of the body P. When it is desired to increase the length of the duct D to be manufactured, the first joiner A1 may be interposed at a plurality of intermediate positions. Further, if ribs are integrally protruded from the main member 1 or the sub-member 2 of the first joiner A1, the ducts are reinforced by the ribs, and particularly, the flattening strength is excellent.

By the way, the first joiners A1, A11,
When the second joiner A2, the third joiner A3, the plate P, and the like are all continuously extruded with a synthetic resin such as a polyvinyl chloride resin, the cost is lower than those made by injection molding. As the plate P, a plurality of calender sheets obtained by thermocompression bonding to a predetermined thickness may be used. And
Duct D made of resin with excellent chemical resistance such as polyvinyl chloride resin is suitable for exhaust gas ducts of chemical factories and plating factories that handle corrosive gases such as hydrogen chloride, or ventilation ducts of sewage treatment plants Used for

[0034]

According to the present invention, even if the thickness of the plate varies, the variation is absorbed by the change in the width of the slot provided in the joiner. There is an effect that the fitting state with the body becomes a certain appropriate state. Therefore, when the joiner of the present invention is used, not only can a fixed bonding state be obtained when the joiner and the plate are bonded with an adhesive, but also a joiner having various groove widths depending on the thickness of the plate. Is unnecessary, and the number of components and the types of components can be reduced accordingly when manufacturing the duct.

[Brief description of the drawings]

FIG. 1 is a perspective view of a synthetic resin duct manufactured using a joiner according to an embodiment of the present invention.

FIG. 2 is a partial sectional view of a portion where a first joiner is used in the duct.

FIG. 3 is a partial cross-sectional view of a portion where a first joiner is used in the duct.

FIG. 4 is a partial plan view of a portion where a first joiner is used in the duct.

FIG. 5 is a partial sectional view of a portion where a second joiner is used in the duct.

FIG. 6 is a partial sectional view of a portion where a third joiner is used in the duct.

FIG. 7 is a sectional view showing a state where flanges of the duct are connected to each other.

FIG. 8 is a side view showing a modification of the first joiner.

FIG. 9 is a side view showing another modification of the first joiner.

FIG. 10 is a plan view showing a modification of the second joiner.

FIG. 11 is a side view showing a modification of the first joiner.

FIG. 12 is a side view showing a modification of the third joiner.

FIG. 13 is a side view showing a modified example of the duct.

FIG. 14 is a sectional view of a conventional joiner.

[Explanation of symbols]

 D Duct A1, A11 First joiner A2 Second joiner A3 Third joiner P Plate 1 Main member 2 Sub member 11 Groove 13 Depressed groove 14 Main member support plate 21 Projection 22 Sub member support plate

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 61-115806 (JP, U) JP 2-56557 (JP, B2) JP-A 48-22138 (JP, Y1)

Claims (1)

(57) [Scope of request for utility model registration] A support plate protruding from the groove in a direction intersecting the depth direction of the groove, and being superposed on one of a front surface and a back surface of a plate body for forming a duct wall; A main member integrally comprising, and projecting in a direction intersecting the projecting direction from the projecting portion and the projecting portion inserted into the groove of the main member to a predetermined depth of the concave groove,
A sub-member integrally provided with a support plate portion that is superimposed on the other of the front surface and the back surface of the plate body.