JP2002227819A - Bolt and nut cap for rust prevention - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bolt and nut cap for rust prevention capable of easily preventing rusting of bolts and nuts and being efficiently installed by preventing dropping. SOLUTION: A skirt part 13 longer than a washer or a flange part and covering the washer or the flange part is continuously connected to either of a head part 12 formed according to a bolt 4a or the head part 12 formed according to a nut portion 4c formed of the tip part of the bolt 4a and a nut 4b, and a flat part 14 allowed to fit closely to a tightened material is provided at the tip of the skirt part 13 to form cap bodies 11. The plurality of cap bodies 11 are continuously connected to each other through connection materials 15 according to the arrangement of the bolt nuts. Thus, the cap bodies 11 can be continuously and efficiently installed by connecting the plurality of cap bodies to each other according to the arrangement of the bolts 4a and nuts 4b, and a holding force can also be increased to prevent dropping.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rust-preventive bolt and nut cap, and can easily prevent rust on bolts and nuts of steel structures such as bridges, power generation facilities, factory facilities, water tanks, etc., and also prevent falling. And efficient construction.

[0002]

2. Description of the Related Art In many cases, joints, which are members to be fastened to steel structures such as bridges, power generation facilities, factory facilities, and water tanks, are fastened using bolts and nuts.

[0003] For example, when connecting a joint portion (attachment point) 2 of a main girder 1 of a bridge shown in FIG.
Abutment plates 3 such as a shear plate and a moment plate are applied before and after the joint, and the joint portion 2 is sandwiched between the two attachment plates 3 and 3 from both sides to penetrate the two attachment plates 3 and 3. It is performed by tightening with the bolt and nut 4.

[0004] When such a steel structure is installed outdoors, not only the steel structure but also the bolts and nuts are easily corroded.

[0005] As such a rust-preventing treatment of the bolt and nut, a synthetic resin cover is attached to the bolt or nut instead of the conventional paint to prevent rust, so that the screw at the tip of the bolt which is difficult to form a coating film is formed. It has also been proposed that parts and the like be rust-proof. For example, Japanese Utility Model Laid-Open No. 3-43113 discloses that
A cover for a bolt and nut for rust prevention is disclosed.

In this rust-preventing bolt-nut cover, for example, when a nut cover 5 as shown in FIG. 5 is used, a cover main body 6 is screwed into the tip of a bolt 4a and fixed to a head 6a. A skirt portion 6b which is continuously provided according to the shape of the nut 4b, a skirt portion 6c which is provided continuously with the skirt portion 6b and covers the washer 7, and an attachment plate 3 which is formed at the tip of the skirt portion 6c and is a material to be tightened. When it is attached to the nut 4b, the inner surface of the cover main body 6 is loaded with rust preventive oil,
After the skirt 6b is turned over and the head 6a is fixed to the tip of the bolt 4a, the skirt 6b is returned to the original position so as to cover the nut 4b.

The nut cover 5 loaded with such rust-preventive oil also covers the nut 4b, the tip of the bolt 4a protruding from the nut 4b, and the washer 7, thereby enhancing the rust-preventive effect.

When the cover 5 for the bolt is used, the cover body 6 except for the head 6a is used.
As shown in FIG. 5 (b), each is attached to a bolt 4a.

[0009]

However, in such a cover 5 for a rust preventing bolt and nut, each bolt 4a
It is necessary to attach the cover 5 to each of the nuts and nuts 4b, and if a large number of bolts and nuts 4 are used in one place as in the joint portion 2 such as a bridge, the attaching work becomes complicated. There's a problem.

Further, depending on the arrangement of the joint portion 2, the bolt 4
a and the nut 4b may face downward. In particular, in the case of a bolt cover 5 having no threaded portion where the tip of the bolt 4a protrudes, the bolt must be held only around the bolt 4a, and it is difficult to secure the holding force. There is also a problem.

Further, the corrosion of the joint 2 is not limited to the bolt and nut 4 but is also likely to occur on the attachment plate 3 of the joint 2 and the end face 3a thereof. It is necessary to prevent rust.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and can easily prevent rusting of bolts and nuts, and can prevent falling, etc., and can be applied efficiently. It is intended to provide.

[0013]

In order to solve the above-mentioned problems of the prior art, a bolt nut cap for rust prevention according to claim 1 of the present invention is provided with a head or a bolt tip and a nut adapted to the shape of the bolt. A skirt portion that is longer than the washer or the brim portion and that covers the washer or the brim portion is continuously provided on one of the heads according to the shape of the nut portion, and a flat surface that can be in close contact with the material to be tightened at the tip of the skirt portion. The cap body is constituted by providing a portion, and a plurality of the cap bodies are connected in accordance with the arrangement of the bolts and nuts.

According to the rust-preventive bolt-nut cap, either the head conforming to the shape of the bolt or the head conforming to the shape of the nut portion formed by the bolt tip and the nut is longer than the washer or the brim. A skirt portion covering the washer or the brim portion is continuously provided, and a flat portion capable of closely adhering to the material to be tightened is provided at the tip of the skirt portion to constitute a cap body, while the cap body is formed according to the arrangement of the bolt and nut. A plurality of caps are connected, and the cap body can be connected continuously according to the arrangement of the bolts and nuts, so that it can be installed continuously and efficiently, and the holding force is increased and the fall can be prevented. .

According to a second aspect of the present invention, there is provided a rust preventive bolt / nut cap according to the first aspect, further comprising a cap located at an end of a cap body for the plurality of bolts or nuts connected to each other. The present invention is characterized in that a cap body for a nut portion or a bolt to be put on a nut portion or a bolt is opposed to the main body with the material to be fastened interposed therebetween, and a cap body for the bolt is continuously provided.

According to this rust-prevention bolt / nut cap, the nut body or the bolt is opposed to the cap body located at the end of the plurality of connected bolt or nut cap bodies with the material to be tightened sandwiched therebetween. A cap body for a nut part or a bolt to be covered is connected in series, and one cap body is located opposite to the end of the cap body, so that the material to be tightened can be sandwiched and fixed, and more secure The fall can be prevented.

Further, the rust preventive bolt / nut cap according to claim 3 of the present invention has the following features.
Instead of connecting a plurality of the cap body for the bolt and the cap body for the nut portion in accordance with the arrangement of the bolts and nuts, the cap body and the cap body are connected to each other by an end cover that covers the end face of the material to be tightened and face each other. It is characterized by having done.

According to the rust-preventive bolt-nut cap, instead of connecting a plurality of bolt cap bodies and the above-mentioned cap body for the nut portion in accordance with the arrangement of the bolts and nuts, the end face of the material to be tightened is formed. It is configured to be connected and opposed to each other by the covering end face cover part, and it is possible to prevent rust as a set of bolts and nuts, and to cover the end face of the material to be tightened with the end face cover part, The end face can also be rustproofed.

A bolt nut cap for rust prevention according to a fourth aspect of the present invention, in addition to the configuration according to the third aspect, further comprises a cap body for the bolt and a cap for the nut portion connected by the end face cover. A plurality of main bodies are connected to each other according to the arrangement of the bolts and nuts.

According to this rust-prevention bolt / nut cap, the cap body for the bolt and the cap body for the nut portion connected by the end face cover are connected to each other in accordance with the arrangement of the bolt and nut. In this way, a set of bolts and nuts can be used to prevent rust, and the connected end face cover can continuously cover the end face of the material to be tightened, so that not only the bolts and nuts but also the joints can be more widely rustproofed. Will be able to do it.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic perspective view according to an embodiment when a rust prevention bolt-nut cap of the present invention is used as a nut cap.

This rust preventive bolt / nut cap 10
A plurality of cap bodies 11 that can be put on the individual nuts 4b to prevent rust are connected, and, for example, four cap bodies 11 are connected.

Each cap body 11 comprises a head portion 12, a skirt portion 13, and a flat portion 14. The head portion 12 is a portion for covering a nut portion 4c composed of a tip portion of the bolt 4a protruding from the nut 4b and the nut 4b, and has a small-diameter cylindrical portion 12a with a bottom screwed into the tip portion of the bolt 4a and fixed. , And a bolt and nut portion 12b which is provided in series with the shape of the nut 4b. The skirt portion 13 is a portion connected to the head portion 12 and covers the washer 7. The skirt portion 13 is integrally formed with a flat portion 14 applied to the front end of the skirt portion 13 against the surface of the attachment plate 3 as a fastening material. Have been.

The cap body 11 is connected to the nut 4b.
In the case where the cover body 11 is mounted, rust-preventive oil is loaded on the inner surface of the cover main body 11 as necessary, and the bolt nut portion 12b constituting the head portion 12 is inverted so that the small-diameter cylindrical portion 12a is attached to the tip of the bolt 4a. After fixing, bolt and nut part 12b
To cover the nut 4b.

Each of the cap bodies 11 has a head 12
These are connected by a string-shaped connecting member 15 and are integrally formed at the same time when the cap body 11 is formed.

When a bolt cap is used,
The head 12 of each cap body 11 is constituted by only the bolt and nut portion 12b from which the small-diameter cylindrical portion 12a has been removed, and the shape having such a head 12 connected by a connecting member 15 is used.

Such a rust preventive bolt and nut cap 1
0 means that each cap body 11 is turned into a nut 4b by inverting the bolt and nut portion 12b of the head 12 and rust-preventive oil is loaded therein as necessary, and the head of the cap body 11 is attached to the tip of the bolt 4a. After screwing and fixing the small-diameter cylindrical portion 12a of the portion 12, the bolt and nut portion 12b is turned over, and the nut 4b is covered, and the skirt portion 13 is covered around the washer 7. The flat part 14 at the tip of 11 is brought into close contact with the attachment plate 3, and the four nuts 4b are completely sealed.

When the rust-preventing bolt-nut cap 10 is mounted, the cap body 11 covering the four nuts 4b is connected by the connecting member 15, so that even if the cap body 11 is loosened, Can be prevented from dropping.

When the rust preventive bolt / nut cap 10 is mounted, since the four cap bodies 11 are connected by the connecting member 15, the remaining one can be held by mounting one. It is sufficient to cover the nuts sequentially from
Even if the arrangement of b is shifted, the connecting material 15 is
Since it is molded with the same synthetic resin as that of No. 1, it is possible to take advantage of its elasticity.

As the rust preventive oil, for example, 7 to 10 parts of oleate of dicyclohexylamine, 5 to 15 parts of naphthalene sulfonate, 65 to 80 parts of mineral oil,
For example, those obtained by adding 8 to 10 parts of sorbitan stiaphosphate, 7 to 10 parts of paraffin, and 10 to 15 parts of hydrophobic lica are added thereto.

Next, another embodiment of the rust preventive bolt and nut cap of the present invention will be described with reference to FIG. 2. The same symbols are used for the same parts as the rust preventive bolt and nut cap 10 already described. Duplicate description will be omitted.

The rust-preventive bolt-nut cap 20 is designed to further enhance the drop-preventing effect by the connection of the cap body 11, and the case of a nut cap will be described here as an example.

In the bolt / nut cap 20 for rust prevention, the cap body 11 corresponding to the four bolts 4a is integrally connected and formed by a connecting member 21 extending and connecting the flat portions 14 to each other. The surface of the attachment plate 3 can be covered with a bolt. Further, in the rust-preventive bolt-nut cap 20, the cap bodies 11 of the nut caps corresponding to the bolts 4a at both ends are opposed to each other. It is arranged, and is integrally formed by being connected by an end face cover part 22 formed so as to cover the joint part 2 and the end face 3a of the attachment plate 3.

Accordingly, the rust-preventive bolt-nut cap 20 is provided on the cap body 1 corresponding to the four bolts 4a.
The cap body 11 corresponding to the two nuts 4b opposed to each other at both ends, a connecting member 21 connecting the cap body 11 and an end face cover part 22 are integrally connected.

Such a rust preventive bolt and nut cap 2
0, when the six cap bodies 11 are attached so as to cover the bolts 4a located on the lower surface of the joint portion 2 and the nuts 4b at both ends, the bolt 4
In addition to covering the surface of the attachment plate 3 between a with the connecting member 21, the joint portion 2 and the end face 3a of the attachment plate 3 are also covered, and in addition to the bolt and nut 4, the joint portion 2 is widely rustproofed. Can be.

The rust-preventive bolt and nut cap 2
Even if it is 0, the rust preventive oil 23 is loaded into the cap body 21 as needed.

According to the rust-preventive bolt / nut cap 20, even when the downward bolt 4a is rust-prevented, the cap body 11 for the nut 4b is integrally connected to both ends, so that the fall can be more reliably performed. Can be prevented.

Next, still another embodiment of the rust preventive bolt and nut cap of the present invention will be described with reference to FIG.
The same parts as those of 0 and 20 are denoted by the same reference numerals, and overlapping description will be omitted.

In the rust-prevention bolt / nut cap 30, in addition to the expansion of the rust-prevention range by the connecting members 31 and 32 connecting the cap body 11, the rust-prevention effect of the joint 2 and the end face 3a of the attachment plate 3 is enhanced. It is like that.

In this rust-preventive bolt / nut cap 30, the cap body 11 corresponding to the four bolts 4a is integrally formed by a connecting member 31 extending and connecting the flat portions 14 with each other, although it is hidden in FIG. The cap body 11 that is formed and can cover the back surface of the attachment plate 3 with the connecting member 31 and extends and connects the flat portions 14 corresponding to the four nuts 4b that can be seen in FIG. The connecting member 32 is formed integrally with the connecting member 32 so that the surface of the attachment plate 3 can be covered with the connecting member 32. Further, in the rust prevention bolt / nut cap 30, the connecting members 31 and the connecting members 32 are connected to each other. The joint part 2 and the end face cover 33 formed so as to cover the end face 3a of the attachment 3 are connected and integrally formed.

Accordingly, the rust-preventive bolt-nut cap 30 is disposed along the longitudinal direction of the joint 2.
The bolts 4a and the nuts 4b are simultaneously rust-prevented, and are attached so as to cover the end faces along the longitudinal direction of the joint part 2 with the end face cover part 33. The mounting direction is different from that in which the four bolts 4a and the two nuts 4b in the direction perpendicular to the part 2 are simultaneously covered to prevent rust.

Such a rust preventive bolt / nut cap 3
0, the bolts 4a arranged along the longitudinal direction of the joint 2 and the nuts 4b facing the bolts 4a connect the connecting members 31, 3
By covering the eight cap bodies 11 connected to each other by the end face cover 33, the rust prevention range can be expanded by the connecting members 31 and 32, and the joint 2
In addition, the end face 3a of the attachment plate 3 can be covered with the end face cover 33, and the rust prevention effect can be further enhanced.

Further, the rust-preventive bolt / nut cap 3
According to No. 0, even when the downward bolt 4a is rust-prevented, the cap body 11 for the opposing nut 4b is integrally connected and formed, so that the fall can be prevented reliably.

The rust-preventive bolt and nut cap 3
Even if it is 0, the rust preventive oil 23 is loaded into the cap body 11 as needed.

As a material for the rust-preventive bolt and nut caps 10, 20, and 30, for example, soft vinyl chloride or polyurethane is used, and each part is integrally formed.

Further, in the above embodiment, the case where the flat washer is attached to the nut side and the bolt is a bolt with a flange has been described as an example. However, the present invention is not limited to these, and a bolt nut having another configuration may be used. What is necessary is just to use the cap main body corresponding to each shape.

[0047]

According to the bolt nut cap for rust prevention according to the first aspect of the present invention, as specifically described above with reference to one embodiment, a head or a bolt tip portion adapted to the shape of the bolt is provided. A skirt that covers the washer or the brim longer than the washer or the brim is connected to one of the heads according to the shape of the nut portion formed by the nut, and the tip of the skirt can closely adhere to the material to be tightened. While the cap body is configured by providing a flat part, this cap body is connected in plurality according to the arrangement of bolts and nuts, so by connecting a plurality of cap bodies according to the arrangement of bolts and nuts, it is continuous In addition to being able to perform the work efficiently, the holding force is increased and the fall can be prevented.

According to the bolt / nut cap for rust prevention according to the second aspect of the present invention, the tightened member is sandwiched between the cap bodies located at the ends of the plurality of bolt or nut cap bodies connected together. Since the cap body for the nut part or the bolt to be put on the nut part or the bolt is opposed to the cap body, one cap body is located opposite to the end of the cap body, so that the tightening is performed. The material can be fixed by sandwiching it, and the falling can be prevented more reliably.

Further, according to the bolt nut cap for rust prevention according to the third aspect of the present invention, a plurality of cap bodies for the bolt and the cap body for the nut portion are connected in accordance with the arrangement of the bolt and nut. In place of the above, an end face cover portion covering the end face of the material to be tightened is connected and opposed to each other, so that the bolt and nut can be made one set to prevent rust, and the end face cover portion covers the end face of the material to be tightened. It is possible to prevent rust not only on the bolt and nut but also on the end face.

According to the bolt nut cap for rust prevention according to claim 4 of the present invention, the cap main body for the bolt and the cap main body for the nut portion connected by the end face cover are arranged in a bolt and nut arrangement. As a result, it is possible to prevent rust as a set of bolts and nuts, and to continuously cover the end face of the material to be tightened with the connected end face cover. Rust prevention can be achieved over a wider range of joints.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of an embodiment when a rust-preventing bolt-nut cap of the present invention is used as a nut cap.

FIG. 2 is a cross-sectional view of another embodiment in which a rust-preventing bolt and nut cap of the present invention is used as a bolt cap.

FIG. 3 is a schematic perspective view of a rust-preventive bolt and nut cap according to still another embodiment of the present invention.

FIG. 4 is a schematic perspective view and a cross-sectional view of a main girder of a bridge using the rust preventive bolt and nut cap of the present invention.

FIG. 5 is a schematic perspective view and a cross-sectional view of a conventional rust preventive bolt / nut cap.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main girder 2 Joint part (attachment place) 3 Attached plate 4a Bolt 4b Nut 4c Nut part 10 Rust prevention bolt and nut cap 11 Cap body 12 Head 12a Small diameter cylindrical part 12b Bolt nut part 13 Skirt part 14 Flat part 15 Connection material 13 Rust prevention oil 20 Rust prevention bolt / nut cap 21 Connection material 22 End face cover part 23 Rust prevention oil 30 Rust prevention bolt / nut cap 31 Connection material 32 Connection material 33 End face cover part

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Eternal Power 5--30-13 Toyo, Koto-ku, Tokyo Inside Ismic Co., Ltd. (72) Mamoru Sugisaki 5-30-13 Toyo, Koyo-ku, Tokyo Stock Association In Ismic

Claims (4)

[Claims] 1. A skirt for covering a washer or a collar longer than a washer or a collar, either on a head adapted to the shape of a bolt or a head adapted to a shape of a nut portion formed by a bolt tip and a nut. The cap body is formed by providing a flat portion at the end of the skirt portion which can be in close contact with the material to be tightened, and a plurality of the cap bodies are connected in accordance with the arrangement of the bolts and nuts. Rust prevention bolt and nut cap. 2. A nut portion or a bolt portion to be put on a nut portion or a bolt which is opposed to a cap body located at an end portion of the cap body for a plurality of bolts or nuts connected with a tightening member therebetween. The rust-prevention bolt / nut cap according to claim 1, wherein the cap body is connected in series. 3. A cap body for the bolt and a cap body for the nut portion are connected by an end cover that covers the end face of the material to be tightened, instead of connecting a plurality of cap bodies for the nut portion in accordance with the arrangement of the bolts and nuts. The rust-prevention bolt / nut cap according to claim 1, wherein the cap and the nut are configured to face each other. 4. A cap body for a bolt and a cap body for a nut portion, which are connected by the end face cover, are connected in plurality according to the arrangement of bolts and nuts. Rust prevention bolt and nut cap as described.