JP3153536U - Strainer with fixing jig - Google Patents

Abstract

The present invention provides a strainer with a fixing jig that is suitable for a repair drain and the like and can be fixed to the drain easily and surely. A strainer having a strainer with a fixing jig includes a first connecting portion and a second connecting portion arranged to face each other in the longitudinal direction in the drain, and one end of the first connecting portion. Are connected to the first link 32a in a circumferential direction of the drain at predetermined intervals, and one end of the first link 32a is rotatably connected to the second connection portion 35. Correspondingly arranged rod-shaped second links 32b, the other ends of the first link 32a and the second link 32b, a plurality of pressing contact portions 33a, 33b for pressing the inner surface of the drain, and a strainer A position adjusting rod 36 that includes a screw portion that passes through the cap 31 and the first connecting portion 34 and is screwed with a screw portion provided in the second connecting portion 35, and a position adjusting rod 36 that is positioned above the strainer cap 31. Stopper to stop Has a 7, a. [Selection] Figure 4

Description

  The present invention relates to a strainer with a fixing jig which is applied to a drain or the like and has a novel structure for securely fixing to the drain.

In general, a drain for draining rainwater is installed at the upper end of a drainage groove provided on a flat roof of a building or the roof of a building. For example, as shown in a cross-sectional view of the drain 10 in FIG. 1, a strainer 20 is installed at the top of the drain 10 to prevent dust, fallen leaves, and the like from flowing into the drain 10 together with rainwater. The strainer 20 and the peripheral portion of the drain 10 are fixed by screws 21 as defined in Japanese cast iron lid / drainage industry association standard JCW301 of a roof drain.
As the building becomes aging, regular maintenance is required, and the drain is also repaired accordingly. In many cases, the renovation work for the existing drain is performed by inserting a rehabilitation drain into the existing drain. Specifically, as shown in a cross-sectional view of the renovated drain in FIG. 2, concrete or the like 11 is disposed above the existing drain 10, and the renovated drain 12 is inserted and disposed in the existing drain 10. As described above, initially, the strainer 20 is firmly fixed with the screw 21 provided on the peripheral portion of the existing drain 10, but the portion is completely covered with the concrete 11 or the like. Therefore, in order to integrally fix the strainer 20 to the repair drain 12, it is necessary to newly provide a fixing means around the repair drain 12. The work for providing the fixing means imposes a work burden on the construction contractor and a cost burden on the building owner.

  Therefore, as an example of fixing the strainer in the drain, for example, Patent Document 1 discloses a strainer as shown in FIG. FIG. 3A shows the strainer before being fixed in the drain, and FIG. 3B shows how the strainer is fixed in the drain. The strainer 20 has two pairs of metal legs 22 facing each other. As shown in FIG. 3 (b), the worker holds the metal foot 22 in his / her hand, deflects the metal foot 22 from the state of FIG. 3 (a) by approximately 90 degrees, and inserts it into the drain 10. . In the drain 10, the metal foot 22 spreads by elastic force and comes into contact with the inner surface of the drain 10, and the strainer 20 is fixed in the drain 10.

  Further, in Patent Document 2, an anti-slip member made of, for example, resin is provided at the distal end portion 22E of the metal foot 22, and the strainer 20 is securely inserted into the drain 10 by the frictional force of the anti-slip member against the inner surface of the drain 10. A strainer is disclosed that is secured to the frame.

Japanese Patent Laid-Open No. 9-165858 JP 2009-97168 A

The above-described conventional strainer 20 is fixed in the drain 10 depending only on the elastic force of the metal foot 22 (and the frictional force of the anti-slip member). Therefore, this strainer 20 is useful when used on a relatively small and simple drain installed on a detached veranda or the like, but if used on a drain installed on a flat roof or the roof of a building, For example, it has a problem that it is easily detached from the drain when subjected to an action such as an earthquake or storm. This is because the drain installed on the flat roof or the roof of the building is larger than the drain installed on the veranda or the like, and there is a possibility that reliable fixing cannot be realized only by the elastic force of the metal foot 22 of the strainer 20.
Further, when the strainer 20 having this structure is made large, the elastic force of the metal foot 22 is increased, and it becomes difficult for an operator to bend the metal foot 22 by hand.
Therefore, an object of the present invention is to provide a strainer with a fixing jig that can be easily and reliably fixed in the drain, preferably in the modified drain.

  The strainer with a fixing jig according to the present invention includes a strainer cap and a strainer fixing jig that is attached to the strainer cap and is fixed in the drain. The strainer fixing jig is a longitudinal portion in the drain. A first connecting portion and a second connecting portion which are arranged so as to face each other, and a plurality of rod-like members which are rotatably connected at one end to the first connecting portion and arranged in the circumferential direction of the drain. A first link, a plurality of rod-shaped second links, one end of which is pivotally connected to the second connection portion, and arranged corresponding to the first link, the plurality of first links, and the first link A plurality of press contact portions that connect the other ends of the plurality of second links and press the inner surface of the drain, and screws that pass through the strainer cap and the first connection portion and are provided in the second connection portion Department and And having a positioning bar comprising a threaded portion for engagement, and a stopper positioned stop the positioning rod in an upper portion of the strainer cap, the.

  In the strainer with a fixing jig of the present invention, it is preferable that the first link is arranged at a predetermined interval of one of two equal parts, three equal parts, and four equal parts in the circumferential direction of the drain.

  In the strainer with a fixing jig of the present invention, the stopper has a speed nut type stopper that engages with a screw portion provided on the position adjusting rod, and a nut type screw that engages with a screw portion provided on the position adjusting rod. The stopper is preferably one of a clip-like stopper that engages with a recess provided in the position adjusting rod, and a pin-shaped stopper that is inserted into a through hole provided in the position adjusting rod.

  In the strainer with a fixing jig of the present invention, it is preferable that the pressing contact portion is made of a material having at least a surface portion in contact with the drain and having entropy elasticity in a use environment.

  According to the present invention, it is possible to provide a strainer with a fixing jig that is suitable for a repair drain or the like and can be fixed to the drain easily and surely.

It is sectional drawing of the conventional drain. It is sectional drawing of the conventional repair drain. (A) is a figure which shows an example of the conventional strainer, (b) is a figure which shows a mode that this strainer is fixed in a drain. It is the figure which inserted the strainer with the fixing jig which concerns on 1st Example of this invention in the repair drain. It is a figure for demonstrating a mode that the strainer with the fixing jig which concerns on 1st Example of this invention is fixed in a repair drain. It is a figure which shows the strainer with the jig | tool for fixing concerning 2nd Example of this invention. It is a figure which shows the strainer with the jig | tool for fixing concerning 3rd Example of this invention. It is a figure which shows the modification of a stopper. It is a figure which shows the modification of a stopper.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 4 is a view in which the strainer with a fixing jig according to the first embodiment of the present invention is inserted and fixed in the repair drain. The strainer 30 of the present invention includes a strainer cap 31 and a strainer fixing jig. The strainer fixing jig includes a first link 32a, a second link 32b, a third link 32c, a fourth link 32d, a first press contact portion 33a, a second press contact portion 33b, and a first link. A connecting portion 34, a second connecting portion 35, a position adjusting rod 36, and a stopper 37 are provided.
The rod-shaped first link 32a and the rod-shaped fourth link 32d are connected by the first connecting portion 34 using the hinges 38a and 38f, and the rod-shaped second link 32b and the rod-shaped third link 32c are the second connection. The part 35 is connected using hinges 38c and 38d. The first link 32a and the second link 32b are connected by a first pressing contact portion 33a using a hinge 38b, and the third link 32c and the fourth link 32d are connected by a second pressing contact portion 33b to a hinge 38e. Is connected using. That is, the second link 32b and the third link 32c are arranged and connected to correspond to the first link 32a and the fourth link 32d, respectively. Thereby, the 1st link 32a, the 2nd link 32b, the 3rd link 32c, and the 4th link 32d comprise the 4-joint link mechanism which can rotate within the same plane.
Further, the first connection portion 34 and the second connection portion 35 are arranged so as to face each other in the longitudinal direction in the repair drain 12. The 1st press contact part 33a and the 2nd press contact part 33b are mutually arrange | positioned in the opposing position. Thus, since the 1st press contact | adherence part 33a and the 2nd press contact | adherence part 33b are set so that it may be extruded outside by a four-bar linkage mechanism, the inner surface of the repair drain 12 can be pressed and stuck. .

A hole 31h is formed in the upper center portion of the strainer cap 31, and the position adjusting rod 36 passes through the hole 31h. A through hole 34h is also formed at the center of the first connecting portion 34, and the position adjusting rod 36 passes through the through hole 34h.
Further, the center of the second connecting portion 35 threaded hole 35h been formed, is screwed with the screw portion 36 s ₁ which is formed on the distal end side of the positioning rod 36 (the lower side in the figure).
Further, a screw portion 36 s ₂ is formed on the base end side (upper side in the drawing) of the position adjusting rod 36 and screwed with the stopper 37. The strainer fixing jig can be fixed on the strainer cap 31 by rotating the stopper 37 and positioning the stopper 37 on the strainer cap 31.
Note that a thread portion may be formed over the entire length of the position adjusting rod 36.

A state in which the strainer with the fixing jig according to the first embodiment of the present invention is fixed in the repair drain will be described with reference to FIG.
First, as shown in FIG. 5A, the strainer 30 with the fixing jig is inserted into the repair drain 12.
Next, as shown in FIG. 5B, the position adjusting rod 36 is pulled upward. Then, the strainer cap 31 and the first connecting portion 34 do not move because they are not connected to the position adjusting rod 36, but the second connecting portion 35 moves upward because it is screwed to the position adjusting rod 36 with screws. And the 1st link 32a, the 2nd link 32b, the 3rd link 32c, and the 4th link 32d move so that a rhombus may be formed. Then, the position adjusting rod 36 is pulled up until the first press contact portion 33a and the second press contact portion 33b are brought into contact with the inner surface of the repair drain 12. However, since this work is manually performed by the operator, in actuality, the close contact of the press contact portions 33a and 33b with the inner surface of the modified drain 12 is weak, or as shown in FIG. There may be a slight space between 33b and the inner surface of the modified drain 12.
Next, as shown in FIG. 5C, the stopper 37 is rotated and moved to a position where it is connected to the strainer cap 31, and the position adjusting rod 36 is temporarily fixed to the strainer cap 31. Even if the operator releases his hand, the position adjusting rod 36 does not descend and the strainer fixing jig does not return to the state shown in FIG.
Next, the screw of the position adjusting rod 36 is turned. That is, the screw part 36 s ₁ at the tip of the position adjusting rod 36 is rotated with respect to the screw hole 35 h of the second connection part 35. Then, as shown in FIG.5 (d), the 2nd connection part 35 raises, and the rhombus formed by the 1st link 32a, the 2nd link 32b, the 3rd link 32c, and the 4th link 32d is an up-down direction. It is deformed so as to be crushed and spread outward. As a result, the first press contact portion 33a and the second press contact portion 33b are pressed and brought into close contact with the inner surface of the repair drain 12.
Next, although not shown, the stopper 37 is rotated and moved from the position shown in FIG. 5D to the position where it is connected to the drain cap 31, and the strainer fixing jig is fixed to the strainer cap 31. .
Thus, according to the present invention, the strainer can be easily and reliably fixed in the repair drain.
In the above-described example, the lengths of the links 32a, 32b, 32c, and 32d are equal to each other to form a diamond-shaped four-bar link mechanism. However, the lengths of the first link 32a and the fourth link 32d are equal, It is sufficient if the lengths of the two links 32b and the third links 32c are equal.

FIG. 6 shows a strainer with a fixing jig according to a second embodiment of the present invention. FIG. 6 (a) is a partial perspective view, and FIG. 6 (b) is a schematic plan view.
The strainer with a fixing jig includes a first link 32h, a second link 32i, a third link 32j, a fourth link 32k, a fifth link 32l, a sixth link 32m, and a first pressing contact portion 33h. A second pressing contact portion 33i, a third pressing contact portion 33j, a first connection portion 34, a second connection portion 35, a position adjusting rod 36, and a stopper 37, and a six-bar linkage mechanism. It is composed.
The first link 32h, the second link 32i, and the third link 32j are connected by the first connecting portion 34, and the fourth link 32k, the fifth link 32l, and the sixth link 32m are connected by the second connecting portion 35. The first link 32h and the fourth link 32k are connected by the first pressing contact portion 33h, the second link 32i and the fifth link 32l are connected by the second pressing contact portion 33i, and the third link 32j and the third link 32j are connected. The six links 32m are connected by a third pressing contact portion 33j.
As shown in FIG. 6B, the first link 32h, the second link 32i, and the third link 32j are arranged at an angle of 120 degrees in the circumferential direction of the drain.
As described above, the strainer with the fixing jig having the six-bar linkage mechanism is more securely fixed in the drain than the case of the strainer with the fixing jig having the four-bar linkage mechanism.

FIG. 7 shows a strainer with a fixing jig according to a third embodiment of the present invention. FIG. 7 (a) is a partial perspective view and FIG. 7 (b) is a schematic plan view.
The strainer with fixing jig includes a first link 32o, a second link 32p, a third link 32q, a fourth link 32r, a fifth link 32s, a sixth link 32t, and a seventh link 32u. The eighth link 32v, the first press contact portion 33o, the second press contact portion 33p, the third press contact portion 33q, the fourth press contact portion 33r, the first connection portion 34, and the second connection portion 35. And a position adjusting rod 36 and a stopper 37 to constitute an eight-bar linkage mechanism.
The first link 32o, the second link 32p, the third link 32q, and the fourth link 32r are connected by the first connecting portion 34, and the fifth link 32s, the sixth link 32t, the seventh link 32u, and the eighth link 32v are the first. 2 are connected by a connecting portion 35. The first link 32o and the fifth link 32s are connected by the first pressing contact portion 33o, the second link 32p and the sixth link 32t are connected by the second pressing contact portion 33p, and the third link 32q and the third link 32q are connected. The seventh link 32u is connected by a third pressing contact portion 33q, and the fourth link 32r and the eighth link 32v are connected by a fourth pressing contact portion 33r.
As shown in FIG. 7B, the first link 32o, the second link 32p, the third link 32q, and the fourth link 32r are arranged at an angle of 90 degrees in the circumferential direction of the drain.
As described above, the strainer with the fixing jig having the eight-node link mechanism is more reliably fixed in the drain than the case of the strainer with the fixing jig having the four-node link mechanism or the six-node link mechanism.

Further, a stopper 37 described above is a nut-type, screwed with the threaded portion 36 s ₂ alignment rod 36 as the bolts, but the position adjustment rod 36 is positioned stop on strainer cap 31, FIG. 8 and FIG. A modification as shown in FIG. 9 is also possible.
Figure 8 is a stopper 37o speed nut type, to engage the threaded portion 36 s ₂ position adjustment rod 36 as a bolt. Threaded portion 36 s ₂ and screwed Unlike the above it is not necessary to turn the screw, it is possible to move to a predetermined position by pressing the stopper 37o, it is easy to position.
FIG. 9A is a partial cross-sectional view of the strainer, and FIG. 9B is a plan view of the position adjusting rod and the stopper. The position adjusting rod 36 is provided with a plurality of recesses 36c ₁ , 36c ₂ , 36c ₃ , 36c _{4 and the} like, and the position adjusting rod 36 is positioned on the strainer cap 31 by a clip-shaped stopper 37p that engages with the recess. Is done.
In FIG. 9C, the position adjusting rod 36 is provided with a plurality of through holes 36h ₁ , 36h ₂ , 36h ₃ , 36h _{4 and the} like, and a position 37pin is inserted into the through hole 36h ₂ by inserting a stopper 37q serving as a positioning pin. The adjustment rod 36 is positioned on the strainer cap 31.
The configuration of the stopper is not limited to the example described above, and can be changed as appropriate.

It is preferable that the pressing contact portion is made of a material having at least a surface portion in contact with the modified drain 12 having entropy elasticity in a use environment. As the material of the surface portion of the pressing contact portion, vulcanized rubber or urethane rubber is preferable. Specific examples of the vulcanized rubber include natural rubber, isoprene rubber, styrene-butadiene rubber, butadiene rubber, chloroprene rubber, ethylene-propylene rubber, and silicone rubber.
By using these, the pressing contact portion can be reliably brought into close contact with the inner surface of the repair drain 12.

Moreover, although the example which fixes the strainer with the fixing jig of this invention to the vertical type | mold repair drain was demonstrated, it can apply and fix similarly in the case of a horizontal type | mold repair drain.
Moreover, although the case where the strainer with the fixing jig of the present invention is fixed to the repair drain has been described, the strainer with the fixing jig of the present invention can also be used for a new drain.

Hereinafter, this effect has been confirmed by examples, and will be described.
As a conventional example, a strainer with a fixing jig shown in FIG. 3 was attached to a repair drain (VU75 PVC pipe).
As Example 1, a strainer with a fixing jig shown in FIG. 4 was attached to a repair drain (VU75 PVC pipe). The surface portion of the pressing contact portion of the strainer fixing jig is SUS304.
As Example 2, a strainer with a fixing jig shown in FIG. 4 was attached to a repair drain (VU75 PVC pipe). The surface portion of the pressing contact portion of the strainer fixing jig is natural rubber having a thickness of 2 mm.
A digital force gauge (DS2-500N type, manufactured by Imada Co., Ltd.) was attached to the strainer of the conventional example and the strainer of the example via a string, and the force required to pull up the digital force gauge was measured.
When the force when pulling up the strainer of the conventional example is 1 N, the force when pulling up the strainer of Example 1 is 7 to 8 N, and the force when pulling up the strainer of Example 2 is 25 to 30 N. Met.
Thus, it was confirmed that the strainer with the fixing jig of the present invention is difficult to come off from the repair drain.

DESCRIPTION OF SYMBOLS 10 Drain 11 Concrete 12 Repair drain 20 Strainer 21 Screw 22 Metal foot 30 Strainer 31 Strainer cap 32 Link 33 Press adhesion part 34 1st connection part 35 2nd connection part 36 Position adjustment rod 37 Stopper 38 Hinge

Claims (4)

A strainer with a fixing jig, comprising a strainer cap, and a strainer fixing jig that is attached to the strainer cap and fixed in the drain,
The strainer fixing jig is
A first connection portion and a second connection portion arranged to face each other in the longitudinal direction in the drain;
A plurality of rod-shaped first links, one end of which is pivotally connected to the first connection portion, and arranged at predetermined intervals in the circumferential direction of the drain;
A plurality of rod-shaped second links, one end of which is pivotally connected to the second connection portion and disposed corresponding to the first link;
A plurality of press contact portions for connecting the other ends of the plurality of first links and the plurality of second links and pressing the inner surface of the drain;
A position adjusting rod including a threaded portion that penetrates the strainer cap and the first connecting portion and is screwed with a threaded portion provided in the second connecting portion;
A stopper for positioning the position adjusting rod on the strainer cap;
A strainer with a fixing jig.   2. The strainer with a fixing jig according to claim 1, wherein the first links are arranged at predetermined intervals of one of two equal parts, three equal parts, and four equal parts in the drain circumferential direction. .   The stopper includes a speed nut type stopper that engages with a screw portion provided on the position adjustment rod, a nut type stopper that engages with a screw portion provided on the position adjustment rod, and a recess portion provided on the position adjustment rod. The strainer fixing jig according to claim 1, wherein the jig is a clip-shaped stopper to be engaged, or a pin-shaped stopper inserted into a through-hole provided in the position adjusting rod.   The strainer fixing jig according to any one of claims 1 to 3, wherein at least the surface portion in contact with the drain is made of a material having entropy elasticity in a use environment.

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