JP2006153119A - Nut for foundation bolt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a nut for foundation bolts capable of keeping fixed state without getting loose after the nut is fastened when fixing a fixing member that is fixed to a foundation bolt by fastening the nut. <P>SOLUTION: The nut is screwed on a foundation bolt A. The nut 1 comprises an elastic cylindrical seal body 4 of which an abutting surface 4a having such shape as to be engaged with a lower part of the nut 1 is formed on the inner side surface, and an adhesive member 2 which is bonded to the abutting surface 4a of the seal body 4 and has a hollow part 7 in which the foundation bolt A is inserted, with a bag body 6 in which an adhesive 5 is sealed up and which is broken under the pressure nut 1 being provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a nut for a foundation bolt that can maintain a firm fixation without loosening after the nut is tightened when the fixing member is fastened to the foundation bolt provided on the foundation with the nut.

When fixing the foundation, which is a fixing member, to the foundation in the construction of a house, etc., or when fixing mechanical equipment, etc., which is a fixing member between the soils of factories, etc., fix the fixing member to the foundation or the foundation bolt protruding from the soil. The nut is fastened and fixed, but even if the nut is fully tightened, the nut may later loosen and the fixing may be weakened.
In order to prevent this, an adhesive is applied to the foundation bolt and / or nut with a brush to fix the foundation bolt and nut.

However, the work of applying the adhesive each time at the site is troublesome, and it takes time for the tightening work, resulting in poor work efficiency.
Therefore, as conventional bolts and nuts having an adhesive, for example, a connector disclosed in Japanese Patent Laid-Open No. 62-83509 and a bolt disclosed in Japanese Patent Laid-Open No. 61-136002 have already been proposed.

The connector disclosed in Japanese Patent Laid-Open No. Sho 62-83509 is provided with an adhesive enclosing container in which an adhesive that bursts when pressed by the connector body is sealed at the tip of the connector body composed of a head and a shaft. The tool body is inserted into the insertion hole of the connecting member and the head of the connector body is struck so that the adhesive is ruptured by the adhesive sealing portion of the sealing container and the adhesive leaks out.
And, by providing a thread groove on the outer peripheral surface of the shaft portion of the connector main body and screwing it into the fitting hole of the connector member, the adhesive container of the adhesive container can be ruptured. It is provided on the screw. Also, the screwing of the bolt and nut is different.

In addition, the bolt disclosed in Japanese Patent Application Laid-Open No. 61-136002 is a bolt that advances and compresses by screwing against a fixed member, and an enclosed adhesive is disposed on the forward path and is generated between the fixed member by screwing. It is locked by the adhesive that flows out under pressure, and this is also provided with a glass bulb in which the adhesive is sealed in a bolt. And in bolting of a bolt and a nut, there exists a problem that an adhesive agent leaks outside from a screwing part.
JP 62-83509 A JP-A-61-136012

  In view of the above, the present invention intends to provide a nut for a foundation bolt that can maintain a firm fixation without loosening the nut after tightening when the fixing member to be fixed to the foundation is fastened to the foundation bolt with a nut. is there.

  In order to solve the above-mentioned problems, the nut for a foundation bolt according to the first aspect of the present invention is a nut that is screwed to the foundation bolt, and the nut has an abutting surface in a shape in which a lower portion of the nut is fitted to the inner surface. It has an annular ring-shaped sealing body having elasticity and a hollow portion that is fixed to the contact surface of the sealing body and through which the foundation bolt is inserted, and is filled with an adhesive and is destroyed by pressing a nut. An adhesive member including a bag body is provided.

  By adopting such a configuration, when the adhesive member is fitted to the lower part of the nut and the nut is screwed into the foundation bolt protruding from the fixing member and the nut is tightened, the bag body is destroyed by the pressing of the nut, and the inside The adhesive flows out into the gap between the threaded portion of the foundation bolt and the nut and the gap between the foundation bolt and the fixing member, and the foundation bolt and the nut and the foundation bolt and the fixing member are fixed with the adhesive to be firmly fixed. Therefore, the nut is not loosened even after being tightened, and can be firmly fixed.

  And when the bag body is destroyed and the adhesive inside flows out, the ring-shaped sealing body is fitted to the lower part of the nut, so that the adhesive leaks to the outside from the seating surface of the base bolt and the nut. Is blocked.

  Next, a nut for a foundation bolt according to a second aspect of the present invention is the nut for a foundation bolt according to the first aspect, wherein the adhesive member is fixed to the nut.

  With such a configuration, there is no possibility that the nut will come off during the tightening operation of the nut.

Next, a nut for a foundation bolt according to a third aspect of the present invention is the nut for a foundation bolt according to the first or second aspect, characterized in that the lower part of the seal body extends outward.

  With this configuration, when the nut is tightened, the lower part of the seal body spreads outward by elasticity, and the seat surface of the nut securely presses the bag body and presses against the fixing member side. Prevents the adhesive from leaking out of the seating surface of the nut.

  Next, a nut for a foundation bolt according to a fourth aspect of the present invention is the nut for a foundation bolt according to any one of the first to third aspects, wherein a recess is provided around the screw hole on the upper surface of the nut. An elastic ring-shaped seal member having an insertion hole with which the inner peripheral surface abuts on the screw shaft of the foundation bolt is fitted and fixed.

  With such a configuration, when the nut is tightened and the bag body is broken and the internal adhesive flows out, the adhesive is prevented from leaking out from the upper part of the gap between the threaded part of the base bolt and the nut. The

  Next, the nut for a foundation bolt according to claim 5 is the nut for a foundation bolt according to claim 4, wherein the maximum diameter of the bottom surface of the recess is formed larger than the diameter of the opening of the recess, and the seal The lower part on the outer peripheral side of the member is formed in a tapered part that spreads outward so as to fit into the concave part.

  By adopting such a configuration, when the nut is screwed into the foundation bolt, a force is exerted on the seal member in the direction of coming out of the recess, but the taper portion is caught in the opening of the recess, so that the seal member comes out of the recess. There is no.

According to the nut for a foundation bolt of the present invention described in claim 1, when the nut is screwed into the foundation bolt and the nut is tightened, the bag body is broken by the pressing of the nut, and the internal adhesive is screwed into the foundation bolt and the nut. It flows out into the gap between the parts and the gap between the foundation bolt and the fixing part, and is firmly fixed.
Therefore, the troublesome work of applying an adhesive to the foundation bolt and / or the nut as in the prior art is not required, and the nut can be tightened without tightening and tightening can be permanently maintained by simple work. Has an effect.
In addition, when the bag body is destroyed, the seal body is fitted to the lower part of the nut, so that the adhesive is prevented from leaking from the lower part of the gap between the threaded part of the base bolt and the nut. The adhesive is not wasted and has an effect that enables reliable bonding.

  Next, according to the nut for a basic bolt of the present invention as set forth in claim 2, there is no fear that the nut will come off during the tightening operation of the nut, so that an efficient operation is possible.

  Next, according to the nut for a basic bolt of the present invention as set forth in claim 3, when the nut is tightened, the lower part of the seal body spreads outward by elasticity, and the seat surface of the nut surely presses and fixes the bag body. Since it is pressed against the member side, it is surely tightened and has an effect of preventing the adhesive from leaking from the nut seat surface to the outside by the sealing body.

  Next, according to the nut for a foundation bolt according to the fourth aspect of the present invention, since the adhesive is prevented from leaking out from the upper part of the screwed portion of the foundation bolt and the nut, the adhesive is not wasted. It has the effect of enabling reliable bonding.

  Next, according to the nut for a basic bolt of the present invention described in claim 5, even if a force is exerted on the seal member in the direction of coming out from the recess, the seal member comes out from the recess because the tapered portion is caught in the opening of the recess. Therefore, there is an effect that the leakage of the adhesive from the upper part of the nut can be surely prevented.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 is a perspective view showing an embodiment of a nut for a foundation bolt according to the present invention, FIG. 2 is a sectional view of FIG. 1, FIG. 3 is a perspective view of an adhesive member, and FIG. 4 is a sectional view showing a use state.

  The nut for the foundation bolt of the present invention is screwed into the foundation bolt A, and the adhesive member 2 is provided at the lower part of the nut 1 and the seal member 3 is provided at the upper part of the nut 1.

The nut 1 is a nut having a hexagonal outer periphery and a screw hole at the center. The adhesive member 2 includes a ring-shaped seal body 4 fitted to the lower part of the nut 1 and a bag body 6 in which an adhesive 5 is sealed inside the seal body 4.
The adhesive member 2 can be fitted into the lower portion of the nut 1 and can be fixed integrally with the nut 1 with an adhesive.

The seal body 4 is made of an elastic body such as rubber, and a hexagonal contact surface 4a is formed on the inner upper portion so that the lower portion of the nut 1 is fitted. The outer shape is also formed in a hexagon.
When the nut is tightened below the seal body 4, the lower part of the seal body 4 expands outward with elasticity, and the seat surface of the nut 1 reliably presses the bag body 6 and presses against the fixing member side, thereby providing a sealing function. It spreads outward to fulfill.

The bag body 6 is a flat bag shape formed in a hexagonal shape so that the outer peripheral side is bonded to the substantially central portion of the inner peripheral surface of the seal body 4, and a hollow portion 7 through which the foundation bolt A is inserted is formed in the central portion. Yes.
The bag body 6 is made of a soft synthetic resin or the like in which the adhesive 5 is enclosed and broken by pressing the nut 1 so that the adhesive 5 can flow out.

  Further, a recess 8 having a circular opening 8a formed around the screw hole is provided on the upper surface of the nut 1, and the bottom surface of the recess 8 is the upper surface of the screw hole. The maximum diameter of the bottom surface of the recess 8 is formed larger than the diameter of the opening 8 a of the recess 8.

The lower part of the seal member 3 made of an elastic body such as rubber is fitted and fixed to the recess 8. The seal member 3 is formed in a circular annular tube shape having an insertion hole 3a with which the inner peripheral surface comes into contact with the screw shaft of the foundation bolt A.
Further, the seal member 3 is formed in a tapered portion 3b that spreads outward so that the lower portion on the outer peripheral side fits into the recess 8.

Next, the usage method of the nut for base bolts which has such a structure is demonstrated based on FIG.
FIG. 4 shows a case where the foundation bolt is screwed into the foundation foundation bolt of the building. The foundation bolt A is embedded in the concrete B, the upper portion protrudes on the foundation B, and the foundation is a fixing member placed on the foundation B. It protrudes upward from the bolt hole of C.
The base C is fixed on the foundation B. First, a washer D is inserted into the foundation bolt A, and a nut 1 with an adhesive member 2 fitted or fixed to the lower portion is screwed into the foundation bolt A. Rotate.

  If the nut 1 is rotated, the bag body 6 is clamped and pressed between the seat surface of the nut 1 and the upper surface of the washer D. When the pressing force of the nut 1 increases to a certain level or more, the bag body 6 is destroyed and the bag body. The adhesive 5 flows out of the inside of 6.

The adhesive 5 that has flowed out adheres to the threaded portion of the base bolt A and the nut 1, and after a predetermined time has elapsed, the adhesive 5 is cured and exhibits a function of preventing loosening.
The adhesive 5 also flows out into the gap between the threaded portion of the foundation bolt A and the bolt hole of the foundation C, and fixes the foundation bolt A and the foundation C.

  Further, since the seal body 4 of the adhesive member 2 is fitted or fixed to the lower portion of the nut 1 and the seal member 3 is fixed to the upper portion of the nut 1, the adhesive 5 is used for the seating surface of the nut 1 and the nut. Leakage from the top surface to the outside is prevented.

  As described above, the present invention has been specifically described based on the embodiment. However, the present invention is not limited to the above embodiment. For example, the outer shape of the seal body 4 of the adhesive member 2 is not limited to a hexagon but may be a circle. The material of the bag body is not limited to soft synthetic resin as long as it is broken by the pressing force of the nut 1, and various improvements and modifications can be made without departing from the spirit of the present invention, such as thin hard plastic.

It is a perspective view showing one embodiment of the nut for basic bolts of the present invention. It is sectional drawing of FIG. It is a perspective view of an adhesive member. It is sectional drawing which shows the use condition of this invention nut for nuts.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nut 2 Adhesive member 3 Seal member 3a Insertion hole 3b Tapered part 4 Sealing body 4a Contact surface 5 Adhesive 6 Bag body 7 Hollow part 8 Recessed part 8a Opening part A Foundation bolt B Foundation C Base D Seat

Claims (5)

  A nut that is screwed into a foundation bolt, and this nut has an elastic ring-shaped sealing body in which an abutting surface is formed on the inner surface so that the lower part of the nut is fitted, and the abutting of the sealing body A base bolt having a hollow portion fixed to a surface and having a hollow portion through which the base bolt is inserted, and an adhesive member provided with a bag body that is sealed with an adhesive and is broken by pressing of a nut. nut.   The base bolt nut according to claim 1, wherein the adhesive member is fixed to the nut.   The nut for a foundation bolt according to claim 1 or 2, wherein a lower portion of the seal body extends outward.   A recess is provided around the screw hole on the upper surface of the nut, and an elastic ring-shaped cylindrical seal member having an insertion hole in which the inner peripheral surface comes into contact with the screw shaft of the base bolt is fitted and fixed. The nut for a foundation bolt according to any one of claims 1 to 3, wherein the nut is for a foundation bolt.   The maximum diameter of the bottom surface of the recess is formed to be larger than the diameter of the opening of the recess, and the lower portion on the outer peripheral side of the seal member is formed in a tapered portion that spreads outward so as to fit into the recess. The nut for foundation bolts according to claim 4 characterized by things.

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