JPH09303361A - Temporary connecting method for bolt and nut - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide means in a set of a bolt and a nut, which can diminish processes at the time using, improves working efficiency, can easily and certainly execute work, is safety, and also can meet problems in distribution till using, and provide a set using this means. SOLUTION: A nut 2 is connected to the outer surface of the head of a bolt 4 by matching the rotary shaft of a screw through a washer 3, and at least one part of them is coated with plastic. This coating 1 keeps a connecting condition by covering the head of the bolt 4 and the nut 2 with a resin-made sheet along the outlines of the head of the bolt 4 and the nut 2 so that they are connected to each other. A coating material can resist against a load at the time carrying and using, and has strength in such extent that it can be torn away by human power or cut away to release temporary connection, and perforations are circumferentially and perpendicularly arranged to the coating 1, and a handle grip margin 1a is attached to the coating 1. When using, the bolt 4 and the nut 2 can be taken up while being temporarily connected to each other, and can be handled by one hand until being inserted to a bolt hole. After that, the coating 1 is torn away so as to release the temporary connection, and screw tightening is completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temporary connecting means for bolts and nuts, and more particularly, it is convenient for transportation when a set of bolts and nuts is carried to the site of use, and is convenient for use. The present invention relates to a temporary connecting means for bolts and nuts in consideration of workability.

[0002]

2. Description of the Related Art Conventionally, when bolts and nuts are used as means for tightening or fixing, there are two methods of transporting them to the site of use, one of which is to screw the nuts into the threaded portions of the bolts. How to bring in the combined state,
The other is to bring the bolt and nut separately.

The procedure of using the former method will be described with reference to FIG. 4. The carried-in bolt 1 and nut 2 (the case with the washer 3 is shown in this example) are in a screwed state, so that one operation is performed. Since it is taken out from the storage box at the use site (Fig. 4), it is in a screwed state, so it is necessary to turn the nut at least several times (Fig. 4) to remove the nut from the bolt (Fig. 4). After that, insert the removed bolt into the bolt hole provided between both members 6 and 7 to be fastened (Fig. 4), but if it is not inserted smoothly, use the nut in your right hand (see Fig. 4) as a tool. Hold it and push the bolt with a tool, fit the washer removed in the previous step to the threaded portion of the bolt protruding to the opposite side of the bolt hole, screw the nut (Fig. 4), and finally complete the tightening with the tightening tool 8. (Fig. 4). According to this conventional method,
Since it is carried in in a screwed state, there is an advantage that the direction and order of the nut 2 and the washer can be maintained correctly and will not be lost, as compared with the case of being separated. However, the procedure of using this method has the following problems. (1) Before the procedure of inserting the bolt into the bolt hole, it is necessary to turn the nut to unscrew it, and removing the nut from the bolt becomes an obstacle and the work efficiency is not improved. (2) There is a risk of dropping the nut when removing it from the bolt. (3) When removing the nut from the bolt, it is a two-handed work, so it is necessary to concentrate your attention on your feet even in high-position work, in places where your feet are unstable, or in places with poor conditions such as dark places. , Etc. tend to be distracted, causing a safety problem. (4) Since the bolt holes have slight deviations, distortions, burrs, etc.,
When it is difficult to insert the bolt smoothly, when pushing the bolt in, use the tool after holding the nut removed from the bolt once in either the left or right hand or once putting it somewhere. Since it must be pushed in, work efficiency does not rise and there is also a risk of dropping tools and nuts. (5) The set of bolts and nuts as shown in FIG. 4 has a lot of irregularities, and the work efficiency is poor in load adjustment, transportation, or counting.

In another conventional method in which the bolt and the nut are separately separated and brought to the site of use, two operations are required to take them out of the storage box, and a bolt and nut are screwed together in a set state. Since the above-mentioned advantages due to being brought in are lost, this method also has a problem that work efficiency is deteriorated.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art relating to the use of bolts and nuts, and reduces the procedure during use to improve work efficiency, and Providing a solution that is easy to work with, has no mistakes, is safe, and that also addresses distribution problems such as transportation from shipping to the site of use, and the bolts and nuts etc. using the solution. The task is to provide a set of.

[0006]

According to a first aspect of the present invention, a nut capable of being screwed on the bolt is temporarily joined to the outer surface of the head of the bolt while the rotation axes of both screws are aligned and joined. In use, the bolt and the nut are picked up in a state of being temporarily coupled, and after being pushed into the bolt hole, the temporary coupling is released, the nut is separated, and the bolt and the nut are screwed together.

According to a second aspect of the present invention, in the first aspect of the present invention, a spacer for stabilizing the joint is provided between the outer surface of the head of the bolt and the nut, and the joint surface of the head of the bolt is provided. It is possible to stabilize the bolts and nuts in a temporarily joined state when they are not flat surfaces but have convex portions, and to facilitate work even during use.

According to a third aspect of the invention, in the first or second aspect of the invention, an adhesive is used on the joint surface,
The above-mentioned temporary bonding is performed, and a concrete means called an adhesive is provided as a means for temporary bonding.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, at least a part of the joined bolt head and the nut are covered with plastic or the like so as to connect them. By doing so, the temporary bonding is performed, and in order to break the temporary bonding at the time of use, the coating is torn or a perforation is provided to cut.

According to a fifth aspect of the present invention, the bolts and nuts are temporarily joined by the temporary joining means for bolts and nuts according to any one of the first to fourth aspects. The larger part makes it easier to handle in the process of distribution before use, and it is easy to take out and insert into the bolt hole during use.

[0011]

Embodiments of the present invention will be described below. FIG. 1 is an embodiment of a bolt / nut temporary joining means of the present invention and a set of bolts / nuts temporarily joined by the temporary joining means. FIG. It is shown as a figure.
As shown in FIG. 1 (B) in which the cross section of a set of temporarily joined bolts and nuts, etc. is shown, the outer surface of the head of the bolt 4 is flat, and the nut 2 has both flat threads on the flat portion. Are joined so that their rotation axes coincide with each other, but in the same figure, they are joined via a washer 3. The order in which the washer 3 and the nut 2 are combined is such that when the temporary connection is released as shown in the exploded perspective view of FIG. It is placed in a ready state (see FIG. 3, which will be described later), and in this case, the direction of the nut can also be screwed in this order, but the direction of the nut 2 is constant even when the washer 3 is not present. Must be chosen to be in the direction of.

In this embodiment, because of the temporary connection,
It is necessary to bond the bolts and nuts in the above-mentioned joined state, but one method for that is to use an adhesive on the joint surface between the bolt and the nut (this form is not shown). When using an adhesive, the adhesiveness should be such that the adhesiveness is maintained during transportation and, depending on the mode of use, during the insertion work of the bolt holes, and then can be separated manually. .

Another method is the method shown in FIG. 1, in which at least a part of the head portion of the bolt 4 and the nut 2 which are joined to each other are covered with plastic or the like to connect them. . This coating 1 is shown in FIG.
As shown in (A) and (B), the head of the bolt 4 and the nut 2 are joined along the outer shape thereof by being covered with a resin sheet to maintain the joined state. The bonding method itself by such a resin coating is a general bonding method applied, but the coating material withstands the load during transportation and the later-described use, etc., and also releases the temporary bonding. For this reason, it is necessary to select one that is strong enough to be torn or cut manually. However, it is preferable that the cover 1 be provided with perforations as shown in FIG.
One of them is a perforation 1c in the circumferential direction, from which the head of the bolt 4, the washer 3 and the nut 2 can be separated. In addition, perforations 1b are also cut in the cover 1 in the vertical direction so that the washer 3 and the nut 2 can be separated. The vertical perforation 1b is not necessary when the nut is used without a washer, or when a set of a nut with a seat and a nut with a flange is used. Here, a grip allowance 1a which is a starting point of the separation is attached to the edge of the perforations in the vertical direction so that the separation can be facilitated. In the example shown in FIG. 1, the grip allowance is
1a is provided on the upper nut side, but may be provided on the lower bolt head side.

This embodiment has the configuration as described above,
A procedure in tightening, which is an example of the use, will be described with reference to FIG. First, the bolts that are temporarily joined
Take out the nut set with one hand (Fig. 3) and insert the bolt 4 into the bolt holes of the members 6 and 7 to be tightened,
When the bolt 4 comes into the hole only halfway and stops, press it with one hand in the temporarily joined state, and then hit it with a necessary tool from directly above the bolt head to push it into the bolt hole (Fig. 3).
). In this way, when the threaded portion of the bolt 4 appears on the opposite side of the bolt hole, the washer 3 and the nut 2 of the bolt head are separated from the bolt 4 by tearing off the plastic coating of the temporary coupling means. Next, the washer 3 is fitted to the threaded portion, the nut 2 is screwed and screwed in (FIG. 3), and finally tightened with the tightening tool 8 to complete the work (FIG. 3). Comparing this procedure with the conventional procedure shown in FIG. 4, in the conventional example,
It can be understood that there are many work steps and many steps performed by both hands.

Next, an embodiment of another invention of the present application will be described. FIG. 2 shows this embodiment, and illustrates the structure of a bolt having a round head. As shown in FIG. 2 (B) in which the cross section of the set of the temporarily joined bolts and nuts is shown, the head of the bolt 4'is rounded, so that the nut 2 or the washer 3 and the bolt 4 are formed.
Since the joint with the joint surface of the round head of ´ is unstable, a spacer 5 is provided in the space between both for stabilizing the joint, so that the joint between the nut 2 and the washer 3 maintains a constant posture. It becomes stable. This spacer 5 is shown in FIG.
As shown in FIG. 2C in which (B) and an exploded view are shown, the material has a substantially ring shape, and the material is paper,
It may be rubber or a resin molded product such as Styrofoam. Except for the points relating to the spacer 5 described above, which characterize this embodiment, there is no difference from the above-described embodiment described based on FIG. 1 and FIG.
Before use, refer to the above description for work procedures and the like.

[0016]

Since the present invention is constructed as described above, the following effects can be obtained by using the temporary joining means for bolts and nuts and the set of temporarily joined bolts and nuts. (1) The work time can be reduced by reducing and simplifying the process required for tightening one bolt. (2) There is no risk of wasting the washer and nut because there is no waste because the operation of removing the bolt leads to the operation of inserting the bolt and the operation of removing the washer and nut from the bolt head leads to the operation of screwing the washer and nut. Reduce more. (3) The effects of (1) and (2) above can be exerted even in high-altitude work, in places where the feet or posture are unstable, or in work in poor conditions where the rays are not gathered or exposed to wind and rain. Improves work safety by increasing concentration. (4) By mounting washers and nuts on the heads of the bolts, the heads of the set become large, making it easy for the hands to fit into the hands when storing, taking out or inserting them into the bolt holes, and the force is easily transmitted. (5) Taking advantage of the features of the outer shape of the bolt / nut set of the present invention, if it is attached to the belt like an elastic, it becomes possible for an operator to carry it while wearing it, so that each time one tightens, the bolt is tightened. There is no need to bend down because you need to take out the. Unlike the conventional method, instead of tightening the bolts one by one, if you wear the bolt set of the present invention that is elastically attached to the belt and wear it, work in one area with the same tightening position continuously. It can also be tightened to complete. At this time, it is enough to take out the bolt set with one hand.

[Brief description of drawings]

FIG. 1 illustrates a configuration of a bolt having a flat head according to an embodiment of the present invention.

FIG. 2 is a view for explaining an embodiment of a set of a bolt / nut temporary joining means for a bolt having a round head and a bolt / nut etc. temporarily joined by the temporary joining means in another invention of the present application. .

FIG. 3 is a view for explaining a work procedure in tightening, which is an example of use of the embodiment of FIG. 1 of the present invention.

FIG. 4 is a diagram illustrating a work procedure during use according to a conventional method of bringing a bolt and a nut in a screwed state.

[Explanation of symbols]

1 ... coating, 1a ... grip allowance, 1b ... vertical perforation,
1c ... perforations in the circumferential direction, 2 ... nuts, 3 ... washers, 4
... bolts, 5 ... spacers, 6, 7 ... members to be tightened, 8 ... tightening tools.

Claims (5)

[Claims] 1. A bolt characterized in that a nut capable of being screwed onto the bolt is temporarily joined to the outer surface of the head of the bolt while the rotation axes of both screws are aligned and joined.
Temporary coupling means for nuts. 2. The temporary connecting means for bolts and nuts according to claim 1, wherein a spacer for stabilizing the joining is provided between the outer surface of the head of the bolt and the nut. 3. The temporary joining means for bolts and nuts according to claim 1, wherein the temporary joining is performed by using an adhesive on the joining surface. 4. The temporary coupling is performed by coating at least a part of the joined head portion of the bolt and the nut with a plastic or the like so as to connect the head portion and the nut. 4. A temporary connecting means for bolts and nuts according to any one of 3 to 3. 5. A set of bolts and nuts and the like, which are temporarily joined by the temporary joining means for bolts and nuts according to any one of claims 1 to 4.