JPH07139165A - Cut-off device - Google Patents

Abstract

PURPOSE:To cut off rainwater transmitted on a separator and intruded into a concrete wall completely at the end section of the separator. CONSTITUTION:A doughnut discoid covering material 16 and a cut-off member 14 are inserted and fixed successively into the bearing section 13 of a shallow- bottom pan-shaped reinforcing member 12. The cut-off member 14 is manufactured of a non-volcanizing butyl rubber having stickiness. The reinforcing member 12 is screwed to a male screw section 2 mounted at the end section of a separator 1, and a member 3 is screwed to the male screw section 2. When the front end of the 3 is brought into contact with the cut-off member 14 and the member 3 is further screwed, the surface of the cut-off member 14 is twisted together with the member 3. A part of the cut-off member 14 is pushed between the cut-off member 14 and the male screw section 2 and between the member 3 and the male screw section 2, and sections among these cut-off member 14, male screw section 2 and member 3 are sealed completely by the cut-off member 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stop device applied to a separator or the like of a concrete form holding device, and more particularly to a water stop device capable of completely stopping rainwater entering along a shaft member. Regarding

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
A concrete form holding device 10 in which a pecon 3 is screwed and connected to the male screw portions 2 on both ends of the concrete formwork 4 to support the concrete formwork 4 from the inside is generally known.

[0003]

In the conventional concrete form holding device 10 described above, a water stop plate 5 made of, for example, a rubber, which is in the shape of a donut disk, is attached in the middle of the separator 1 to stop water. However, this water stop plate 5 is a separator 1
Since it is simply attached to the water separator, a complete water blocking effect cannot be expected, and since the water blocking plate 5 must be pushed in and mounted up to the middle position of the long separator 1,
There is a problem that it is not easy to mount.

The present invention has been made in view of the above situation, and an object of the present invention is to provide a water blocking device which is easy to install and can obtain a reliable water blocking effect.

Another object of the present invention is to provide a water stop device which is easy to operate when rotating the water stop member relative to the sealing member and which can be surely rotated relative to the sealing member.

Still another object of the present invention is to provide a water shutoff device which can be handled more easily.

[0007]

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention is a water-blocking structure in which a shaft member penetrates a central portion and at least a part of which is made of non-vulcanized butyl rubber And a sealing member that is mounted on the shaft member together with the water blocking member to reinforce the water blocking member; and a sealing member that is mounted on the shaft member and is pressed against the water blocking member. By the rotation around the shaft member or the relative rotation around the shaft member with the sealing member, at least one of between the shaft member or between the sealing member and the shaft member can be sealed. It is characterized by

Further, the invention according to claim 2 of the present invention is characterized in that the reinforcing member is provided with a shallow dish-shaped support portion, and the water blocking member is fixed in the support portion. .

Further, in the invention according to claim 3 of the present invention, the shaft member is formed by a male screw portion provided at an end portion of the separator,
In addition, the sealing member is formed by an end stopper which is screwed to the male screw part and supports the concrete formwork from the inside.

Further, in the invention according to claim 4 of the present invention, the shaft member is formed by the male screw portion of the bar, and the sealing member is formed by the nut member screwed to the male screw portion. It is characterized by

According to a fifth aspect of the present invention, the shaft member is formed of a non-male thread portion of a bar and the sealing member is
It is characterized in that it is formed by a tubular member attached to the non-male screw portion.

Further, the invention according to claim 6 of the present invention is
The water blocking member is formed of non-vulcanized butyl rubber having adhesiveness, and at least a part of the surface thereof is covered with a non-vulcanized butyl rubber-based coating material having little or no adhesiveness. And

[0013]

In the invention according to claim 1 of the present invention, the water blocking member is rotated around the shaft member, or the water blocking member and the sealing member are relatively rotated around the shaft member.
The non-vulcanized butyl rubber portion of the water blocking member adheres to the shaft member or the sealing member, is twisted, and is fed between the shaft member and between the sealing member and the shaft member. Therefore, at least one of them is sealed with the fed non-vulcanized butyl rubber, and a sufficient water blocking effect is obtained.

Further, in the invention according to claim 2 of the present invention, the reinforcing member is provided with a shallow dish-shaped supporting portion,
The water blocking member is fixed in the support portion. Therefore, it is possible to strengthen the rigidity of the water blocking member and prevent buckling of the water blocking member that occurs when pouring fresh concrete, etc., and when rotating the water blocking member or the sealing member,
Since the reinforcing member can be gripped, the handling can be facilitated.

Further, in the invention according to claim 3 of the present invention, the shaft member is formed of a male screw portion provided at an end portion of the separator, and the sealing member is screwed to the male screw portion, and the concrete formwork is formed. Is formed from an end stopper that supports the inside from the inside. Therefore, it is possible to easily attach the water blocking member, and it is possible to completely stop the invading rainwater at the entrance portion of the infiltration path.

Further, in the invention according to claim 4 of the present invention, the shaft member is formed by the male screw portion of the rod member, and the sealing member is formed by the nut member screwed to the male screw portion. . Therefore, for example, to the middle position of the male screw,
Since the water blocking member can be easily mounted, and the loosening of the nut member is prevented by the non-vulcanized butyl rubber, the mounting position can be fixed.

Further, in the invention according to claim 5 of the present invention, the shaft member is formed of a non-male thread portion of the rod, and the sealing member is formed of a cylindrical member attached to the non-male thread portion. There is. Therefore, for example, the water blocking member can be easily mounted even at an intermediate position of the separator, and the mounting state can be stabilized to obtain a complete water blocking effect.

Further, in the invention according to claim 6 of the present invention, the water blocking member is formed of non-vulcanized butyl rubber having an adhesive property, and at least a part of the surface thereof has no or almost no adhesive property. It is coated with a non-vulcanized butyl rubber coating material. For this reason, it is possible to reinforce the water blocking member having a weak stiffness with the covering material, and it is possible to make the handling easy.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. 1 and 2 show a water stop device according to a first embodiment of the present invention. This water stop device 11 is mounted and fixed between a separator 1 and a pecon 3 of a concrete form holding device 10. ing.

That is, the concrete form holding device 10
As shown in FIG. 2, is composed of a separator 1 having male screw portions 2 at both ends, and a pecon 3 screwed to the male screw portions 2 at both ends of the separator 1, respectively. 4 is supported from the inside, and bulging portions 2a are provided at the inner ends of the male screw portions 2, respectively.

As shown in FIG. 1, the PECON 3 is composed of, for example, an end stopper 6 made of plastic and a screw member 7. The female screw portion 7a of the screw member 7 has a male screw portion 2 of the separator 1. The male screw part 7b of the screw member 7 penetrates through the concrete form 4 and projects outward, and a fastening metal fitting (not shown) is attached to the projecting part. And the water stop device 11
Is interposed between the bulging portion 2 a of the male screw portion 2 and the end stopper body 6 of the pecon 3.

As shown in FIGS. 1 and 3, the water shutoff device 11 is provided with a reinforcing member 12 formed of, for example, hard rubber, and is provided in a shallow tray-shaped support portion 13 thereof. The water blocking member 14 in the shape of a donut disk is fixed, and a female screw 15 screwed onto the male screw portion 2 and pressed against the bulging portion 2a is provided at the center of the reinforcing member 12. ing.

The water blocking member 14 is formed of non-vulcanized butyl rubber having elasticity and adhesiveness, and the surface on the side of the supporting portion 13 has no or almost no adhesiveness as shown in FIG. A non-vulcanized butyl rubber-based covering material 16 is adhered, and a protective paper 17 that is peeled off at the time of use is adhered to the surface of the water blocking member 14 on the side of the PECON 3. As the coating material 16, for example, "Santac roof" (trade name) of Hayakawa Rubber Co., Ltd. is used.

Next, the operation of this embodiment will be described.
At the time of use, the reinforcing member 12 is screwed onto the male screw portion 2 of the separator 1 via the female screw 15 and is tightened until it is pressed against the bulging portion 2a. After the protective paper 17 is peeled off and removed, the PECON 3 is screwed onto the male screw portion 2.

Although the end surface of the screwed PECON 3 will eventually come into contact with the water blocking member 14, the water blocking member is made of non-vulcanized butyl rubber and has a certain adhesiveness. Therefore, it adheres to PECON 3. When the PECON 3 is further tightened in this state, the water blocking member 1
4, the contact portion with the PECON 13 is rotated and twisted together with the PECON 3, and the twisted portion is fed between the central hole of the water blocking member 14 and the male screw portion 2 as shown in FIG. Alternatively, the water blocking member 14 is deformed so as to narrow the center hole. Therefore, the water blocking member 14 and the male screw part 2 are completely sealed. Further, as shown in FIG. 4, a part of the water-stop member 14 that is twisted together with the pecon 13 is fed between the pecon 3 and the male screw portion 2 to seal the space between them and to prevent Prevent loosening.

As described above, the water blocking device 11 is assembled to the concrete form holding device 10, and the concrete form 4 is held by the concrete form holding device 10. Place concrete. Then, after curing the concrete, the concrete form 4 is removed, the peecon 3 is removed, and the mortar or caulking material is filled in the concave portion on the surface of the concrete wall formed after the peecon 3 is removed.

Since the water blocking member 14 is made of non-vulcanized butyl rubber, the water blocking member 14 is in contact with the fresh concrete cast between the concrete formwork 4 and the water blocking member 14. The elasticity of gives sufficient adhesion, and the carboxyl groups in the non-vulcanized butyl rubber react with the CaO component in the concrete to form an ionic bond,
The water blocking member 14 and concrete are chemically and firmly bonded and integrated. This chemical adhesive integration is achieved by the mortar filled in the concave portion after removing the PECON 3 and the water blocking member 14
You can also get between Moreover, the water blocking member 14 and the male screw portion 2
The space between and is completely sealed when the PEACON 3 is tightened. Therefore, even if rainwater intrudes into the concave portion after removing the PECON 3, the water can be completely stopped at the position of the water blocking member 14, and the rainwater travels on the surface of the separator 1 to reach the inside of the concrete wall. Ingress can be completely prevented.

FIG. 5 and FIG. 6 show a second embodiment of the present invention, in which the covering material 16 in the first embodiment is attached and fixed to the end face of the water blocking member 14 on the side of the PECON 3 for protection. The paper 17 is omitted, and the central hole 14a of the water blocking member 14 is omitted.
Is formed to have substantially the same diameter as the male screw portion 2 of the separator 1.

When the reinforcing member 12 is attached to the male screw portion 2 of the separator 1 in the above structure, the inner surface of the central hole 14a of the water blocking member 14 adheres to the male screw portion 2 and covers most of the surface of the male screw portion 2, The water-blocking member 14 covering the surface of the male screw portion 2 is further thinned by the mounting of the PECON 3 to almost completely cover the surface of the male screw portion 2.

However, the water blocking member 14 does not come into direct contact with the fresh concrete cast between the concrete formwork 4 and the mortar filled in the concave portion after the removal of the PECON 3, and the coating material 16 is applied. Although it comes into direct contact, since this coating material 16 is also a non-vulcanized butyl rubber system, it is chemically and firmly bonded and integrated to fresh concrete or mortar, and is equal to or more than the water blocking member 14. A water-stop effect can be obtained. Further, since the surface of the male screw portion 2 is almost completely covered with the water blocking member 14, the surface of the male screw portion 2 is also chemically and firmly bonded and integrated with the mortar,
The holding power of mortar can be increased and
Even if rainwater intrudes into the concave portion after removal of the PC 3, the male screw portion 2 can be prevented from corroding.

FIG. 7 shows a third embodiment of the present invention, in which the reinforcing member 12 of the first embodiment is screwed into the middle portion of a long male screw member 18 as a shaft member and also as a sealing member. The nut member 1 screwed onto the male screw member 18 in place of the PECON 3 in the first embodiment.
9 is used.

In the above structure, when the reinforcing member 12 and the nut member 19 are rotated in opposite directions to bring the end surface of the nut member 19 into close contact with the water blocking member 14, the water blocking member 1
The surface of 4 adheres to the nut member 19 and
Is twisted with the relative rotation of. Then, the twisted portion is fed between the center hole of the water blocking member 14 and the male screw member 18, or the water blocking member 14 is deformed so as to narrow the center hole. Therefore, the water stop member 14
The space between the male screw member 18 and the male screw member 18 is completely sealed. Along with the nut member 19 of the water blocking member 14, a part of the twisted portion is fed between the male screw member 18 and the threaded portion of the nut member 19 to seal the gap between them and to prevent the nut member 19 from sliding. Prevent loosening.

Therefore, even when the water stop device 11 is installed at the intermediate position of the long male screw member 18, a complete water stop effect can be obtained and the mounting state can be stabilized.

FIG. 8 shows a fourth embodiment of the present invention. Instead of the female screw 15 in the first embodiment, the reinforcing member 12 is provided with a hole 20 having a diameter larger than that of the bulging portion 2a of the separator 1.
A tubular member 21 having a pipe shape, a C-ring tubular shape, a spiral tubular shape, or the like is used as the sealing member instead of the PECON 3 in the first embodiment.

In the above structure, the reinforcing member 12 and the tubular member 21 are brought close to each other along the non-threaded portion of the separator 1 and the end face of the tubular member 21 is in close contact with the water blocking member 14 so that they are reversed. When relatively rotated in the direction, the surface of the water blocking member 14 adheres to the tubular member 21 and is twisted as the tubular member 19 relatively rotates. And, like the above-mentioned respective embodiments,
The space between the center hole of the water blocking member and the separator 1 and the space between the tubular member 21 and the separator 1 are filled with the water blocking member 14,
The space between them is completely sealed.

Thus, the water stop device 11 can be easily attached to the non-threaded portion of the separator 1 such as the non-threaded portion of the bar, and the attachment state is stabilized to make the water stop effect last. be able to.

In each of the above embodiments, the case where both the water blocking member 14 and the covering material 16 are used has been described, but the covering material 16 may be omitted and only the water blocking member 14 may be used. . On the contrary, the water blocking member 14 is omitted and only the coating material 16 is used.
You may make it function as. Further, for example, ordinary rubber or the like and the water blocking member 14 or the covering material 16 may be used in combination.

[0038]

As described above, according to the first aspect of the present invention.
The invention according to, rotating the water stop member around the shaft member,
Alternatively, by relatively rotating the water blocking member and the sealing member around the shaft member, at least one of between the water blocking member and the shaft member or between the sealing member and the shaft member is a water blocking member. Since it is hermetically sealed, it is easy to install and a reliable water blocking effect can be obtained.

According to the second aspect of the present invention, the reinforcing member is provided with a shallow dish-shaped supporting portion, and the water blocking member is fixed in the supporting portion. , It is possible to prevent buckling of the water blocking member that occurs when pouring fresh concrete, and when rotating the water blocking member or the sealing member, the reinforcing member can be gripped. Very easy to handle.

Further, in the invention according to claim 3 of the present invention, the shaft member is formed by a male screw portion provided at an end portion of the separator, and the sealing member is screwed to the male screw portion, so that the concrete formwork is inside. Since it is formed by the end stopper that is supported from above, it is easy to attach the water blocking member, and the invading rainwater can be completely stopped at the entrance portion of the infiltration path.

Further, in the invention according to claim 4 of the present invention, the shaft member is formed by the male screw portion of the rod member, and the sealing member is formed by the nut member screwed to the male screw portion. Therefore, the water stop member can be easily attached to the middle position of the male screw, for example, and the loosening of the nut member is prevented with non-vulcanized butyl rubber. The effect can be made permanent.

Further, in the invention according to claim 5 of the present invention, the shaft member is formed of a non-male thread portion of the rod, and the sealing member is
Since it is formed of a cylindrical member that is attached to this non-male screw portion, the water blocking member can be easily attached to, for example, the intermediate position of the separator and the like, and the attachment state can be stabilized to ensure completeness. A water blocking effect can be obtained.

The invention according to claim 6 of the present invention is
The water blocking member is formed of non-vulcanized butyl rubber having adhesiveness,
At least a part of the surface is coated with a non-vulcanized butyl rubber-based coating material that has little or no stickiness, so that the water-blocking member with weak stiffness can be reinforced with the coating material, In addition, handling can be facilitated without reducing the water blocking effect.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a water shutoff device according to a first embodiment of the present invention.

FIG. 2 is an overall configuration diagram showing a concrete formwork holding device in which the water blocking device of FIG. 1 is incorporated.

FIG. 3 is a cross-sectional view showing a structure around a reinforcing member.

FIG. 4 is an explanatory view showing a water-stop state by a water-stop member.

FIG. 5 is a view, corresponding to FIG. 3, showing a second embodiment of the present invention.

FIG. 6 is an explanatory view showing a water stop state by the water stop member of FIG.

FIG. 7 is a view corresponding to FIG. 1 showing a third embodiment of the present invention.

FIG. 8 is a view corresponding to FIG. 1 showing a fourth embodiment of the present invention.

FIG. 9 is a configuration diagram showing a conventional concrete formwork holding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Separator 2 Male screw part 2a Bulging part 3 PECON 4 Concrete formwork 10 Concrete formwork holding device 11 Water stop device 12 Reinforcing member 13 Support part 14 Water stop member 14a Center hole 15 Female screw 16 Covering material 17 Protective paper 18 Male screw member 19 Nut member 20 Hole 21 Cylindrical member

Claims (6)

[Claims] 1. A water blocking member having a shaft member passing through a central portion thereof, at least a part of which is made of non-vulcanized butyl rubber; and a reinforcement which is attached to the shaft member together with the water blocking member to reinforce the water blocking member A sealing member attached to the shaft member and brought into pressure contact with a water blocking member; the water blocking member is rotated about the shaft member or relative to the sealing member around the shaft member, A water stop device characterized by sealing at least one of a shaft member and a sealing member and a shaft member. 2. The water stopping apparatus according to claim 1, wherein the reinforcing member includes a shallow dish-shaped supporting portion, and the water stopping member is fixed in the supporting member. 3. The shaft member is formed of a male screw portion provided at an end portion of the separator, and the sealing member is formed of an end stopper screwed to the male screw portion to support the concrete formwork from the inside. The water shutoff device according to claim 1, wherein the water shutoff device is provided. 4. The shaft member is formed of a male screw portion of a bar material,
The watertight device according to claim 1 or 2, wherein the sealing member is formed of a nut member screwed on the male screw portion. 5. The shaft member is formed of a non-male screw portion of a rod, and the sealing member is formed of a tubular member attached to the non-male screw portion.
Water stop device described. 6. The water blocking member is formed of non-vulcanized butyl rubber having adhesiveness, and at least a part of the surface thereof is coated with a non-vulcanized butyl rubber-based coating material having little or no adhesiveness. Claims 1 and 2, characterized in that
The water stop device according to 3, 4, or 5.