JP2012047236A - Nut holding member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nut holding member that can easily and surely perform bolt joining work by performing positioning in advance with an easy operation in a stable state without a malfunction such as displacement and disengagement when joining a tubular member whose lateral cross section vertical to a tube axis is a closed cross section, a tube body, a structural body composed of a rod-shaped body, components, an accessory or the like with a bolt and a nut.SOLUTION: The nut holding member 14 is used by being inserted into a hollow section of the tubular member 13 when bolt-joining the tubular member 13 having a bolt hole 13a and a mating member having a bolt hole. The external peripheral shape of the nut holding member 14 contacts with the internal peripheral face of the tubular member 13 from the inside, and movement to a direction perpendicular to the tube axis of the tubular member 13 is limited. A nut fit-in part 144 for holding the nut 6 without corotation accompanied by the screw-in of the bolt 15 is formed at the external periphery of the nut holding member 14, and the nut 6 is held at the nut fit-in part 144.

Description

  The present invention relates to a tubular member whose cross section perpendicular to the tube axis is a closed cross section (hereinafter, simply referred to as a pipe), a structural material comprising a tube or a rod to be joined to the pipe, a bracket, or the like. When fastening and joining parts and accessories with bolts and nuts, the necessary number of nuts necessary for bolt joining to the predetermined position in the hollow portion of the pipe, as required arrangement (orientation), Moreover, it can be positioned and prepared (equipment) with a simple operation in a stable state that does not cause problems or troubles such as misalignment or dropout during bolt joining work, and the bolt joining work described above should be executed easily and reliably. Belongs to the technical field of nut holding members that contribute to.

Conventionally, for example, when constructing a road guard fence, for example, a bracket is attached directly to a pillar standing on the ground or first by bolting, and a beam pipe arranged in the longitudinal direction of the road is attached to the bracket by bolting. Many methods have been implemented.
In that case, the hollow part of the beam pipe is usually a closed cross-section that is so small that a human hand cannot be inserted, so in many cases the bolt is penetrated in the diametrical direction of the beam pipe and on the opposite side. Many methods have been implemented in which nuts are screwed and fastened together.
However, in such a bolt joint structure, the head of the bolt is exposed on one side of the outer peripheral surface of the beam pipe, and the screw shaft portion of the bolt and the nut screwed in the bolt are exposed on the opposite side. Appearance design is rustic and aesthetic. In addition, it is conceivable that a passerby or a vehicle hits the head of the bolt or the screw shaft or nut of the bolt.
Therefore, the development of a bolt joint structure in which the bolt head, the screw shaft, and the nut are not exposed as much as possible on the outer peripheral surface of the beam pipe has been requested, and its practical application has been promoted. In short, it is an implementation of a structure in which a nut is provided (prepared) in advance in a hollow portion of a pipe having a circular closed cross section, and a screw shaft portion of a bolt is screwed into the nut from the outside of the pipe.
The request to develop the bolt joint structure is not limited to the field of building the road guard fence, but a nut is installed (prepared) in the hollow portion of the pipe having a circular closed cross section, and the pipe is connected to the nut. Are widely present in the technical field of various assembly structures in which the screw shaft portion of the bolt is screwed and joined from the outside.

As a solution to the above problem, for example, a road guard fence disclosed in Patent Document 1 below has a nut fixed to a flat plate when bolting a joint pipe and a beam pipe supported by a column, and further A nut holding member having a suction cup attached to the back surface of the plate is configured, inserted into the hollow portion of the joint pipe, and the suction cup is adsorbed to the inner peripheral surface of the joint pipe so that the flat plate and the nut are positioned as bolt holes. A technique is disclosed in which bolts can be joined by matching the bolts from the outside.
However, since the above-mentioned nut holding member has a circular cross section of the beam pipe, it is difficult to strongly and firmly adsorb the suction cup to a desired position. In addition, the inner peripheral surface of the beam pipe is generally left as a rough surface that is not polished, and in this sense, it is difficult to firmly suck the suction cup to a desired position on the rough surface. For this reason, there is a problem in that it is easy to cause problems such as misalignment and dropping of the nut due to being pushed by the bolt inserted through the bolt hole at the time of joining work.

  Next, the road guard fence disclosed in Patent Document 2 below has a nut fitted into a groove of a frame having a cross-sectional groove shape when bolting the joint pipe and the beam pipe supported by the column. After fixing the nut holding member, insert it into the hollow part of the joint pipe, match the position of the nut and bolt hole, and fasten the nut holding member to the pipe with rivets or tapping screws. A technique for positioning and bolting from the outside of a pipe is disclosed.

  However, there is a problem that a cost is increased due to the need for a manual gap in the process of fitting the nut into the nut holding groove of the groove-shaped frame and caulking. Also, this nut holding member is inserted into the hollow part of the joint pipe, and the work of positioning by fastening to the inner peripheral surface of the pipe with a rivet or tapping screw requires highly skilled technology and is also performed locally. Has been pointed out that there is a limit to the possibility of

Japanese Utility Model Publication No. 55-48909 Japanese Utility Model Publication No. 2-6717

  An object of the present invention is, for example, a case where a bracket is attached to a support column standing on the ground as described above and a beam pipe is bolted to the bracket, and the hollow portion of the beam pipe is a person having a nut. If the diameter is too small to insert a hand, or if it has a substantially closed cross section, the required number of nuts required for bolt connection to the desired position in the hollow portion of the pipe (direction) ) In addition, anyone can position and install equipment with a simple operation in a stable state that does not cause problems or troubles such as displacement or dropping when pushed by bolts inserted through bolt holes during bolt joining work. It is possible to easily achieve the purpose of inserting bolts from the outside (outer circumference) of the pipe and screwing them into the nuts to join (fasten) the bolts. The parts and nuts is to provide a nut-holding member capable of realizing a bolt joint structure is not exposed to the outside of the pipe.

As means for solving the above problems, the nut holding member according to the invention described in claim 1 is:
A nut holding member that is used by being inserted into a hollow portion of the tubular member when bolting a tubular member having a bolt hole and a mating member having a bolt hole,
The outer peripheral shape of the nut holding member is a shape that comes into contact with the inner peripheral surface of the tubular member from the inside and is restricted from moving in a direction perpendicular to the tube axis of the tubular member,
A nut fitting portion for holding the nut so as not to rotate together with the screwing of the bolt is formed on the outer peripheral portion of the nut holding member, and the nut is held in the nut fitting portion.

The invention described in claim 2 is the nut holding member according to claim 1,
The nut fitting portion includes a step portion in which the nut sits at the back.
The invention described in claim 3 is the nut holding member according to claim 1 or 2,
The nut fitting portion is formed as a recess into which the nut is fitted, or as a groove-like portion into which at least two parallel surfaces of the nut are fitted, and the nut held by the nut fitting portion is not rotated with the screwed bolt. It is characterized by being held loose.

  In the nut holding member of the present invention, when the pipe and other members such as a pipe body and a bracket are bolted together, the nut held by the pipe is preliminarily arranged in a concentric arrangement with the bolt hole processed in advance in the pipe. Adjusting the push-in amount and circumferential direction of the nut holding member in such a way that it can be inserted into the hollow part of the pipe by hand or by using an elongated rod-like tool that can be inserted into the hollow part of the pipe It is possible to install (or prepare) with at least the bolt from the outside of the pipe and screw it into the nut, and the movement in the direction perpendicular to the tube axis is restricted to a degree that does not hinder the fastening operation and is stable. Bolts can be joined. Therefore, when the nut holding member of the present invention is used, it is possible to ensure that a nut required for bolt joining is securely installed in the hollow portion of the pipe having a small diameter so that nobody can insert a hand without skill. Bolts that can be prepared and inserted through the bolt holes from the outside of the pipe can be securely screwed into the nut and fastened, and the screw shaft and nut (and holding material) are not exposed to the outer periphery of the pipe Bonding can be realized.

  The nut holding member of the present invention has a structure in which a nut housing portion is formed in a holding material formed of, for example, foamed or non-foamed plastic, and the nut is held. Since a plurality of nuts can be held in a required direction in the holding material, a plurality of target bolt joints around the pipe can be easily made possible.

It is the perspective view which showed the principal part of the nut holding member which is the 1st Example of this invention. It is the cross-sectional view which showed the usage example of the said nut holding member. A and B are sectional views showing states before and after fastening of a bolt using the nut holding member of the first embodiment. It is the perspective view which showed the principal part of the nut holding member which is 2nd Example of this invention. It is the cross-sectional view which showed the usage example of the nut holding member of the said 2nd Example. It is the perspective view which showed the principal part of the nut holding member which is 3rd Example of this invention. It is the cross-sectional view which showed the usage example of the said nut holding member. It is the perspective view which showed the nut holding member which is 4th Example of this invention. It is the cross-sectional view which showed the usage example of the said nut holding member. It is the perspective view which showed the nut holding member which is 5th Example of this invention. It is the cross-sectional view which showed the usage example of the said nut holding member. It is the perspective view which showed the nut holding member which is 6th Example of this invention. It is the cross-sectional view which showed the usage example of the said nut holding member. It is the perspective view which showed the nut holding member which is 7th Example of this invention. It is the cross-sectional view which showed the usage example of the said nut holding member. It is the perspective view which showed the nut holding member which is 8th Example of this invention. It is the cross-sectional view which showed the usage example of the said nut holding member. It is the perspective view which showed the nut holding member which is 9th Example of this invention. It is the cross-sectional view which showed the usage example of the said nut holding member. It is the cross-sectional view which showed the usage example of the nut holding member which is 10th Example of this invention. It is the cross-sectional view which showed the usage example of the nut holding member which is 11th Example.

The nut holding member according to the present invention is a nut holding member that is inserted into a hollow portion of the tubular member and used when a tubular member having a bolt hole and a mating member having a bolt hole are joined by bolts.
The outer peripheral shape of the nut holding member is a shape that comes into contact with the inner peripheral surface of the tubular member from the inside and restricts the movement of the tubular member in a direction orthogonal to the tube axis.
A nut fitting portion that holds the nut so as not to rotate with respect to the screwing of the nut is formed on the outer peripheral portion of the nut holding member, and the nut is held by the nut fitting portion.

Hereinafter, the present invention will be described based on illustrated embodiments.
First, the nut holding member 14 shown in FIGS. 1 to 3 will be described as a first embodiment.
The nut holding member 14 according to the first embodiment has a size that can be inserted into a hollow portion of a hollow pipe 13 whose circular cross section perpendicular to the tube axis is closed as shown in FIG. In this configuration, the nut 6 is fitted into a bifurcated portion on one side of the holding member 140 having a shape.
To explain further, the holding member 140 is supported by the three outer edges 141, 142, and 143 each having a substantially Y-shaped cross section just inscribed in the inner peripheral surface of the hollow pipe 13 that is closed in a circular shape. The fulcrum is formed. In short, the outer peripheral shape of the holding member 140 is sufficiently large with respect to the acting force of the bolt 15 that is in contact with the inner peripheral surface of the pipe 13 from the inside, inserted from the bolt hole 13a of the pipe 13 and pressed against the nut 6. The shape is such that a stable support force (or support reaction force) is exhibited and movement of the pipe 13 in a direction orthogonal to the tube axis is restricted (blocked).

  In particular, as is apparent from FIG. 2, the three fulcrums 141 to 143 are located along the diameter line N of the pipe 13, so that the two sides 142 and 143 of the bifurcated portion are vertically symmetrical on both sides of the diameter line. Since the support points having a proper arrangement are formed, it is possible to realize a stable installation state by inscribed in the inner peripheral surface of the pipe 13 having a hollow shape closed in a circular shape. And the held nut 6 can be made to be closely and concentrically positioned concentrically with the bolt hole 13a provided in the pipe 13, and the bolt 15 inserted through the bolt hole 13a can be vibrated with a constant strength applied to the pipe 13. Only the acting force that accompanies the operation of aligning with the screw hole of the nut 6 exhibits stability that does not cause displacement or dropout. In short, this positional stability is obtained by a configuration in which the three fulcrums 141 to 143 of the holding member 140 are inscribed in a range over a circumferential angle exceeding 180 degrees on the inner peripheral surface of the pipe 13.

Therefore, as shown in FIG. 2, the outer peripheral shape of the holding member 140 that is the main body of the nut holding member 14 is in contact with the inner diameter of the pipe 13 and can restrict movement in each direction orthogonal to the tube axis. It is sufficient to hold the nut 6 tightly in the operation of screwing the bolt 15 into the nut 6 so as not to cause any trouble.
In FIG. 2, the holding material 140 is shown in close contact with the inner peripheral surface of the pipe 13. It will be understood from the description of each of the embodiments below that it can be implemented with an outer peripheral shape and can accommodate bolting in various directions. Moreover, it is effective to implement the shape of the nut fitting portion 144 provided in the nut holding member 14 so as to have an appropriate backlash for holding the nut 6. If there is moderate play for holding the nut 6, it is convenient for the operation of finding the screw start end with the nut 6 at the tip of the bolt 15.

The material of the holding material 140 is not particularly limited. Practically suitable for mass production, can be manufactured (molded) inexpensively and lightly, and easy to handle, thermosetting or thermoplastic synthetic resins such as phenolic resins, epoxy resins, melamine resins, unsaturated polyester resins, polyurethane resins Etc. are preferably used. In addition, it is also preferable to carry out by molding with low / medium foam or high foam polystyrene resin or polypropylene resin. It can be made of non-foamed synthetic resin, or can be made and made of wood or metal. This point is common to the embodiments described below.
However, in the case of the first embodiment, for example, by a plastic extrusion method, the cross section is formed into a long shape in the tube axis direction of the pipe 13 as a Y-shaped uniform cross-section material, and is cut to the required length. can get. A notch-shaped nut fitting portion 145 that sandwiches two parallel surfaces of the nut 6 is formed on the bifurcated portion of the holding member 140, and the two parallel surfaces of the nut 6 are pushed into the fitting portion 145, so that a step at the far end is formed. The nut holding member 14 is configured by being positioned to the portion. Therefore, there is no inconvenience that the nut 6 rotates together when the bolt is screwed.
The nut holding member 14 in FIG. 1 shows a configuration in which one nut 6 is held on the holding material 140, but this is not restrictive. If necessary, the necessary number of nuts 6 can be held in the same direction at intervals in the longitudinal direction of the holding material 140. Alternatively, nuts 6 having different shapes and sizes (screw hole diameters) can be held in the same manner.

  As shown in FIG. 6, the nut 6 to be held by the holding member 140 is fitted and held deeply so as not to interfere with the inner peripheral surface of the pipe 13, and the nut holding member 14 is pushed into the hollow portion of the pipe 13. It is configured so as not to interfere with the work used. The nut 6 has its upper surface (the upper surface of the nut here is a surface opposite to the seat surface to which the nut is tightened in contact with the mating member) seated on the stepped portion.

However, as shown in FIGS. 3A and 3B, when the bolt 15 is inserted into the nut 6 of the nut holding member 14 from the outside of the pipe 13 and screwed, the screwing amount of the bolt 15 advances. The nut 6 is gradually pulled out from the notch 144 of the holding material 140. Finally, as illustrated in FIG. 3B, the nut 6 is configured to be able to float from the notch portion 144 to a state of metal touch that is in direct contact with the inner peripheral surface of the pipe 13, and a sufficiently strong bolt joint Can contribute to the realization of
Incidentally, in FIG. 3, reference numeral 1 is, for example, a post of a road guard fence, and therefore the pipe 13 is an image of a beam pipe.

Next, the nut holding member 16 shown in FIGS. 4 and 5 will be described as a second embodiment.
The nut holding member 16 of the second embodiment is also of a size that can be inserted inward into the hollow portion of the pipe 13 having a hollow shape whose cross section is closed circularly as shown in FIG. The nut 6 is fitted into a bifurcated portion on one side (or both sides) of the holding material 160 that constitutes the following.
More specifically, the holding member 160 is inscribed in the inner peripheral surface of the pipe 13 having a hollow shape with four outer edges 161, 162, 163 and 164 each having a substantially X-shaped cross section. To form a supported fulcrum. The outer peripheral shape of the holding member 160 is sufficiently large with respect to the acting force of the bolt 15 inserted into the bolt hole 13a of the pipe 13 and pressed against the nut 6 by the fulcrum in contact with the inner peripheral surface of the pipe 13 from the inside. It is a shape that exhibits a stable support force and is restricted from moving in the direction perpendicular to the tube axis of the pipe 13.

Further, as clearly shown in FIG. 5, the four fulcrums 161 to 164 form four support points in a symmetrical arrangement along the diameter line N of the pipe 13 in the vertical and horizontal directions. A stable positioning state can be achieved by inscribed in the inner peripheral surface of the pipe 13 having a closed hollow shape. Then, the held nut 6 can be made to be exactly concentric with the bolt hole 13a provided in the pipe 13, and the bolt 15 inserted through the bolt hole 13a and the bolt 15 inserted through the bolt hole 13a can be tightened. 6 is limited to the contact force due to the operation of aligning with the screw hole 6 and the movement of the pipe 13 in the direction orthogonal to the tube axis is limited, and the nut 6 is stable so as not to be displaced or dropped. Demonstrate sex.
In short, the four fulcrums 161 to 164 are inscribed at four points in the vertical and horizontal symmetrical positions along one diameter line N of the circular pipe 13, that is, in a range exceeding 180 degrees in terms of the circumferential angle. Positional stability is obtained.

This holding material 160 is also formed by forming a long cross-section in the tube axis direction of the pipe 13 as a uniform cross-sectional material having an X-shaped cross section by, for example, a plastic extrusion method, and cutting to a required length. . A notch 165 having a shape sandwiching the two parallel surfaces of the nut 6 is formed in the bifurcated portion of the holding member 160, and the nut holding member 16 is pushed and held in the notch 165 by holding the two parallel surfaces of the nut 6. Is configured. Therefore, there is no inconvenience that the nut 6 rotates together when the bolt is screwed.
Although FIG. 4 shows a configuration in which only one nut 6 is held on the holding material 160, this is not restrictive. If necessary, the necessary number of nuts 6 are spaced in the longitudinal direction of the holding material 160 and the opposite number of nuts 6 '(see FIG. 5) are also formed on the bifurcated portion formed in the same direction or just opposite. ) Can be held in the same manner as many times as necessary. Alternatively, it is of course possible to use nuts having different shapes and sizes (screw hole diameters) by holding them on the holding material 160 by the same method.

As shown in FIG. 5, the nut 6 to be held by the holding member 160 is fitted and held deeply so as not to interfere with the inner peripheral surface of the pipe 13, and the nut holding member 16 is pushed into the hollow portion of the pipe 13. It is configured so as not to interfere with the work used.
However, as shown in FIG. 3A, when the bolt 15 is inserted into the nut 6 of the nut holding member 16 from the outside of the pipe 13 and screwed in, the screwing amount of the bolt 15 increases. The nut 6 is gradually pulled out from the notch 165 of the holding member 160, and finally, as illustrated in FIG. 3B, the nut 6 is cut to a metal touch state in which the nut 6 is in direct contact with the inner peripheral surface of the pipe 13. There is no change in the configuration that can move from the notch portion 165, which contributes to the realization of a sufficiently strong bolt joint. It is declared here just in case that such a configuration is common to the embodiments described below.
FIG. 5 shows an image of an embodiment in which the pipe 13 and the plate 25 are joined by the bolt 15.

Next, the nut holding member 17 shown in FIGS. 6 and 7 will be described as a third embodiment.
The nut holding member 17 of the third embodiment is also sized to be inserted into the hollow portion of the pipe 13 whose cross section is closed in a circular shape as shown in FIG. 7 and has a substantially hollow cross section (although it can be solid). In this configuration, the nut 6 is fitted into one apex angle portion (or other apex angle portion) of the holding member 170 having a triangular shape.

More specifically, the holding member 170 is inscribed in the inner peripheral surface of the pipe 13 having a hollow shape in which the three apex edges 171, 172, and 173 each having a triangular shape with a hollow cross section are closed in a circular shape. The fulcrum to be supported is formed, and a sufficiently large and stable supporting force is exerted against the acting force of the bolt 15 inserted from the bolt hole 13a of the pipe 13 and pressed against the nut 6, The movement in the direction orthogonal to the direction is restricted.
As apparent from FIG. 7, the three fulcrums 171 to 173 form two support points 171 and 172 in a symmetrical arrangement along the diameter line N of the pipe 13. In addition, it is possible to achieve a stable positioning by inscribed in the inner peripheral surface of the pipe 13 having a hollow shape. And the held nut 6 can be made to be closely and concentrically positioned concentrically with the bolt hole 13a provided in the pipe 13, and the bolt 15 inserted through the bolt hole 13a can be vibrated with a constant strength applied to the pipe 13. When the contact force is about the same as the operation for aligning with the screw hole of the nut 6, the stability that never causes the displacement or dropping is exhibited. The reason is that the three fulcrums 171 to 173 are inscribed in the upper and lower positions along one diameter line N of the circular pipe 13, that is, in a range exceeding 180 degrees as a circumferential angle. The stability of the installation position has been obtained.

This holding material 170 is also formed by, for example, forming a long triangle shape in the tube axis direction of the pipe 13 as a uniform triangular cross-sectional material having a hollow cross section by a plastic extrusion method, and cutting it into a required length. Is done. A notch 174 having a shape sandwiching two parallel surfaces of the nut 6 is formed in an arbitrary apex portion of the holding member 170, and the two parallel surfaces of the nut 6 are pushed into and held by the notch 174. A holding member 16 is configured. Therefore, there is no inconvenience that the nut 6 rotates together when the bolt is screwed.
Although FIG. 6 shows a configuration in which only one nut 6 is held on the holding material 170, this is not restrictive. If necessary, the necessary number of nuts 6 are spaced in the longitudinal direction of the holding material 170 in the same direction, or using the other two apex angle parts or side parts (the nut 6 ′ in FIG. See)), the required number of nuts 6 or 6 'can be held in the same way in different number directions, respectively. Of course, nuts 6 having different shapes and sizes (screw hole diameters) can be held in the same manner.
In addition, when it hold | maintains at the part of a side like nut 6 'of FIG. 7, it is convenient to carry out by forming the thickness of the same side into the thick form which rises as a whole or partially.

Next, a nut holding member 18 shown in FIGS. 8 and 9 will be described as a fourth embodiment.
As shown in FIG. 9, the nut holding member 18 of the fourth embodiment has a size that can be inserted into the hollow portion of the pipe 13 whose cross section is closed in a circular shape, and the head of the holding member 180 having a substantially T-shaped cross section. The portion 181 is formed as an arcuate thick portion having substantially the same curvature as the inner peripheral surface of the pipe 13, and has a groove width slightly narrower than the interval between two parallel surfaces of the nut 6 in the longitudinal direction of the central portion of the same thick portion. A concave groove 182 is formed, and a shallow vertical groove 183 for fitting a part of each of two parallel surfaces of the nut 6 is formed in the groove wall at a position where the nut 6 should be held in the concave groove 182, and the nut 6 Is configured to be fitted and held.

More specifically, the holding member 180 has an inner circumference of the pipe 13 having a hollow shape in which a head 181 and a T leg 184 each having a substantially T-shaped cross section and formed as an arcuate portion are circularly closed. A fulcrum that is supported just by being inscribed in the surface is formed, and exhibits a sufficiently large and stable supporting force against the acting force of the bolt 15 that is inserted from the bolt hole 13a of the pipe 13 and pressed against the nut 6. Movement in a direction perpendicular to the 13 tube axes is limited.
In particular, as clearly shown in FIG. 9, the edge 184 ′ of the T leg 184 positioned along the diameter line N of the pipe 13 and the inner periphery of the pipe 13 are centered on the T leg 184. Since a wide support point is formed with the head portion 181 formed as an arcuate fillet portion that extends to about 70 degrees (but not limited to) this circumferential angle, a hollow shape that is closed in a circular shape A stable positioning state can be realized by inscribed in the inner peripheral surface of the pipe 13 forming a straight line.

  And the held nut 6 can be made to be closely and concentrically positioned concentrically with the bolt hole 13a provided in the pipe 13, and the bolt 15 inserted through the bolt hole 13a can be vibrated with a constant strength applied to the pipe 13. A stability that never causes a displacement or drop-off is exhibited with a contact force of about the same level as the operation of aligning with the screw hole of the nut 6. The reason for this is that a wide range of supporting points are formed by the T leg 184 and the head 181 formed as an arcuate portion having a circumferential angle of about 70 degrees around the center. State and position stability is obtained.

  This holding material 180 is also formed by forming a long shape in the pipe axis direction of the pipe 13 as a uniform cross-sectional material having a substantially T-shaped cross section by, for example, a plastic extrusion method, and cutting it into a required length. Is done. Then, a vertical groove 183 for holding the nut 6 is formed in the concave groove 182 of the head portion 181 formed as an arcuate portion of the holding material 180, and two parallel surfaces of the nut 6 are pushed into the vertical groove 183 and held. By doing so, the nut holding member 18 is configured. Therefore, there is no inconvenience that the nut 6 rotates together when the bolt is screwed.

FIG. 8 shows a configuration in which only one nut 6 is held on the holding material 180, but this is not restrictive. If necessary, a necessary number of vertical grooves 183 can be formed at intervals in the longitudinal direction of the concave groove 182 of the holding material 180 to hold the necessary number of nuts 6 in the same direction.
Alternatively, if necessary, the arc angle of the head portion 181 formed as an arc-shaped thickened portion can be further enlarged, and two concave grooves 182 can be formed in parallel to hold a plurality of nuts 6 having different directions.
In some cases, the arc angle of the head 181 is formed as small as necessary to form the concave groove 182, or a part of the top of the head 181 is cut at a position indicated by a dotted line M indicated in FIG. It can also be carried out by forming a truncated shape. Of course, it is also possible to carry out by holding nuts having different shapes and sizes (screw hole diameters) in the same manner.

Next, the nut holding member 19 shown in FIGS. 10 and 11 will be described as a fifth embodiment.
The nut holding member 19 of the fifth embodiment is also sized to be inserted into the hollow portion of the pipe 13 whose cross section is closed in a circular shape as shown in FIG. 11, and the cross section is substantially hollow (however, it may be solid). In this configuration, a plurality of nuts 6 are fitted in each apex angle portion (or even a side portion = see FIG. 11) of the holding member 190 having a quadrangular shape.

More specifically, the holding member 190 is supported by the four apex portions 191 to 194 in the quadrangular shape having a hollow cross section just inscribed in the inner peripheral surface of the pipe 13 having a hollow shape that is closed in a circular shape. A fulcrum is formed and a sufficiently large and stable supporting force is exerted against the acting force of the bolt 15 inserted from the bolt hole 13a of the pipe 13 and pressed against the nut 6, and is orthogonal to the tube axis of the pipe 13. Movement in the direction is restricted.
In particular, as is clear from FIG. 11, the four fulcrums 191 to 194 are inscribed in the inner circumferential surface of the pipe 13 having a circular shape and closed in a circular angle of 360 degrees. , Stable installation can be realized.
And the held nut 6 can be made to be closely and concentrically positioned concentrically with the bolt hole 13a provided in the pipe 13, and the bolt 15 inserted through the bolt hole 13a can be vibrated with a constant strength applied to the pipe 13. When the contact force is about the same as the operation for aligning with the screw hole of the nut 6, the stability that never causes the displacement or dropping is exhibited.

This holding material 190 is also formed by, for example, forming a long rectangular shape in the direction of the pipe axis of the pipe 13 as a square-shaped uniform cross-section material having a hollow cross section by a plastic extrusion method, and cutting it into a required length. Is done. A notch 195 having a shape sandwiching two parallel surfaces of the nut 6 is formed at the apex portion of the holding member 190, and the two parallel surfaces of the nut 6 are pushed into and held by the notch 195, thereby holding the nut holding member. 19 is configured. Therefore, there is no inconvenience that the nut 6 rotates together when the bolt is screwed.
FIG. 10 shows a configuration in which the three nuts 6 are held by the holding member 190 in three different apex portions in different directions, but this is not restrictive. As necessary, the necessary number of nuts 6 are spaced in the longitudinal direction of the apex portion of the holding member 190, or the necessary number of nuts 6 are used in different directions by using side portions, for example, and the necessary number of nuts 6 are the same. It can be held by a technique. Of course, nuts having different shapes and sizes (screw hole diameters) can be held by the same method as necessary.

Next, the nut holding member 20 shown in FIGS. 12 and 13 will be described as a sixth embodiment.
The nut holding member 20 of the sixth embodiment has a size that can be inserted into the hollow portion of the pipe 13 whose cross section is closed in a circular shape as shown in FIG. A configuration in which a shallow vertical groove 202 that fits a part of each of two parallel faces of the nut 6 is formed in the groove wall of the groove 201 where the nut 6 should be held, and the nut 6 is fitted and held in the same place. It is said that.
In the case of the sixth embodiment, the web 207 of the holding member 200 formed in the H shape is slightly larger than the outer diameter of the screw shaft of the bolt 16 at a position concentric with the nut 6 held as described above. A loose hole 208 having a diameter is provided as a bolt escape hole to allow the screw shaft portion of the bolt 15 to enter.

Continuing the description, the holding member 200 has a substantially H-shaped cross section, and its four end edges 203 to 206 are just inscribed in the inner peripheral surface of the pipe 13 having a circular closed shape. Form a supported fulcrum. Since the four fulcrums 203 to 206 are inscribed over the 360 ° circumferential angle of the inner peripheral surface of the pipe 13 having a hollow shape closed in a circular shape to form a well-balanced support point, a stable positioning state Can be installed.
And the held nut 6 can be made to be closely and concentrically positioned concentrically with the bolt hole 13a provided in the pipe 13, and the bolt 15 inserted through the bolt hole 13a can be vibrated with a constant strength applied to the pipe 13. When the contact force is about the same as the operation for aligning with the screw hole of the nut 6, the stability that never causes the displacement or dropping is exhibited.

This holding material 200 is also formed by forming a long shape in the pipe axis direction of the pipe 13 as a uniform cross-sectional material having a substantially H-shaped cross section by, for example, a plastic extrusion method, and cutting it into a necessary length. The The nut holding member 18 is configured by forming a vertical groove 202 for holding the nut 6 in the concave groove 201 of the holding material 200 and pushing and holding two parallel surfaces of the nut 6 into the vertical groove 202. . Therefore, there is no inconvenience that the nut 6 rotates together when the bolt is screwed.
Although FIG. 12 shows a configuration in which only one nut 6 is held on the holding material 200, this is not restrictive. If necessary, a necessary number of vertical grooves 202 can be formed at intervals in the longitudinal direction of the concave groove 182 of the holding material 200 to hold the necessary number of nuts 6 in the same direction. Alternatively, if necessary, a plurality of nuts having different directions can be held by forming longitudinal grooves in the concave groove 201 on the opposite side. Moreover, it can also be carried out by holding nuts having different shapes and sizes (screw hole diameters) in the same manner.

Next, the nut holding member 21 shown in FIGS. 14 and 15 will be described as a seventh embodiment.
As shown in FIG. 15, the nut holding member 21 of the seventh embodiment has a size that can be inserted into the hollow portion of the pipe 13 whose cross section is circular and has a circular cross section. The nut 6 is fitted into the flat surface portion 211 having a part thereof removed, and a rectangular groove-shaped meat steal 212 is formed as large as possible on the opposite side of the flat surface portion 211.
More specifically, this holding material 210 is supported by arcuate outer peripheral portions 213 and 214 each having a circular cross-sectional shape formed in a circular shape and inscribed in the inner peripheral surface of the pipe 13 having a closed circular shape. Will be a fulcrum.
In particular, as clearly shown in FIG. 15, the two fulcrums 213 and 214 are stable because they are inscribed to the inner peripheral surface of the pipe 13 having a circular shape that is closed in a circular shape over about half of the 360 ° circumferential angle. It is possible to realize the installation in the positioning state. And the held nut 6 can be made to be closely and concentrically positioned concentrically with the bolt hole 13a provided in the pipe 13, and the bolt 15 inserted through the bolt hole 13a can be vibrated with a constant strength applied to the pipe 13. When the contact force is about the same as the operation for aligning with the screw hole of the nut 6, the stability that never causes the displacement or dropping is exhibited.

The holding member 210 is also formed by forming a long section in the pipe axis direction of the pipe 13 as a uniform cross-section material by, for example, a plastic extrusion method, and cutting it into a required length. A similar hexagonal nut fitting portion 215 that is slightly larger than the nut 6 is formed on the flat portion 211 of the holding member 210, and the nut holding member 19 is configured by pushing and holding the nut 6 into the nut fitting portion 215. ing. Therefore, there is no inconvenience that the nut 6 rotates together when the bolt is screwed.
In the case of the present embodiment, an escape hole 216 (loose hole) that allows the threaded shaft portion of the bolt 15 to enter from the nut fitting portion 215 toward the meat stealer 212 having a rectangular groove shape is provided.

  The shape and size of the relief hole 216 (loose hole) provided in the through-hole state as described above does not cause interference due to the front end of the bolt screwed into the nut 6, and the material used for the holding material 210 It is formed in a reasonable form as meat stealing that meets the purpose of reducing the amount and weight. On the other hand, the seating surface of the nut 6 whose upper surface is seated on the stepped portion of the nut fitting portion 215 does not protrude beyond the outer peripheral surface (outer diameter surface) of the holding member 210, and the holding member 210 is placed in the hollow portion of the pipe 13. The configuration will not hinder the work of inserting into the. That is, the seat surface of the nut 6 is slightly depressed from the outer peripheral surface of the holding member 210, but is fitted into the nut fitting portion 215 so as to be exposed to the vicinity of the outer peripheral surface.

FIG. 14 shows a configuration in which one nut 6 is held on the holding material 210, but this is not restrictive. If necessary, a necessary number of nuts 6 can be held in the same direction at intervals in the longitudinal direction of the flat surface portion 211.
In some cases, two or more plane portions 211 are formed in parallel, or no plane portions are formed at all, and the nut fitting portion 215 is formed directly at a desired position on the arc-shaped outer peripheral surface, and the necessary number of the necessary directions are formed. The nut 6 can also be held. If necessary, nuts having different shapes and sizes (screw hole diameters) can be held in the same manner.

Next, the nut holding member 22 shown in FIGS. 16 and 17 will be described as an eighth embodiment.
As shown in FIG. 17, the nut holding member 22 of the eighth embodiment has a size that can be inserted into the hollow portion of the pipe 13 whose cross section is circular and has a circular cross section. The nut 6 is fitted into the flat portion 221 from which a part of the flat portion 221 is cut, and the rectangular groove-shaped meat stealer 222 is formed as large as possible on the opposite side of the flat portion 221.

More specifically, the holding member 220 has an arcuate outer peripheral portion formed in a circular shape whose cross-sectional shape is slightly smaller than the inner diameter of the pipe 13 in four orthogonal directions (intervals of 90 degrees, but 120 degrees apart). 3, or five or more directions of equal intervals or unequal intervals are also possible.) The protrusions 223 to 226 contacting the inner peripheral surface of the pipe 13 are formed, and the protrusions 223 to 226 are each closed in a circular shape. A fulcrum that is supported by being just inscribed in the inner peripheral surface of the hollow pipe 13 is formed.
In this way, the four fulcrums 223 to 226 are inscribed over the circumferential angle of 360 degrees to the inner circumferential surface of the pipe 13 having a hollow shape that is closed in a circular shape, so that a stable positioning state can be realized. And the held nut 6 can be made to be closely and concentrically positioned concentrically with the bolt hole 13a provided in the pipe 13, and the bolt 15 inserted through the bolt hole 13a can be vibrated with a constant strength applied to the pipe 13. When the contact force is about the same as the operation for aligning with the screw hole of the nut 6, the stability that never causes the displacement or dropping is exhibited.

The holding material 220 of the present embodiment is also configured by forming a uniform cross-section material into a long shape in the tube axis direction of the pipe 13 by, for example, a plastic extrusion method, and cutting it into a required length. A similar hexagonal nut fitting portion 227 that is slightly larger than the nut 6 is formed on the flat portion 221 of the holding member 220, and the nut holding member 22 is configured by pushing the nut 6 into the nut fitting portion 227 and holding it. ing. Therefore, there is no inconvenience that the nut 6 rotates together when the bolt is screwed.
In the case of the present embodiment as well, a relief hole 228 of the screw shaft portion of the bolt 15 penetrating from the nut fitting portion 227 toward the rectangular groove-shaped meat stealer 222 is provided.
FIG. 16 shows a configuration in which one nut 6 is held on the holding material 220, but this is not restrictive. If necessary, the necessary number of nuts 6 can be held in the same direction at intervals in the longitudinal direction of the plane portion 221. In some cases, two or more plane portions 221 are formed in parallel. It is also possible to form the nut fitting portion 227 directly at a desired position on the arcuate outer peripheral surface without forming it at all, and to hold the necessary number of nuts 6 in a necessary direction. If necessary, nuts having different shapes and sizes (screw hole diameters) can be held in the same manner.

Next, as a ninth embodiment, the nut holding member 23 shown in FIGS. 18 and 19 will be described.
As shown in FIG. 19, the nut holding member 23 of the ninth embodiment has a size that can be inserted into the hollow portion of the pipe 13 whose cross section is closed in a circular shape, and the basic shape of the cross section is rectangular. The nut 6 is fitted into the one flat surface portion 231, and a rectangular groove-shaped meat stealer 232 is formed as large as possible on the opposite side to the flat surface portion 231.
More specifically, the holding member 230 has a hollow shape in which the corners 233 to 236 chamfered at the four corners formed in a rectangle inscribed in the inner peripheral surface of the pipe 13 with the basic shape of the cross section are closed in a circular shape. A fulcrum that is supported by being inscribed in the inner peripheral surface of the pipe 13 is formed.
Thus, the four fulcrums 233 to 236 are inscribed to the inner peripheral surface of the pipe 13 having a closed circular shape over a circumferential angle of 360 degrees, so that the bolt 15 inserted through the bolt hole 13a is inserted into the screw hole of the nut 6. The movement in the direction perpendicular to the tube axis of the pipe 13 is also limited with respect to the abutting action force (or pushing force) to the extent associated with the screwing operation.
And the held nut 6 can be made to be closely and concentrically positioned concentrically with the bolt hole 13a provided in the pipe 13, and the bolt 15 inserted through the bolt hole 13a can be vibrated with a constant strength applied to the pipe 13. When the contact force is about the same as the operation for aligning with the screw hole of the nut 6, the stability that never causes the displacement or dropping is exhibited.

The holding material 230 is also formed by forming a long section in the pipe axis direction of the pipe 13 as a uniform cross-section material by, for example, a plastic extrusion method, and cutting it into a required length. A similar hexagonal nut fitting portion 237 that is slightly larger than the nut 6 is formed on the flat portion 231 of the holding material 230, and the nut holding member 23 is configured by pushing and holding the nut 6 into the nut fitting portion 237. ing. Therefore, there is no inconvenience that the nut 6 rotates together when the bolt is screwed. In the case of the present embodiment as well, a relief hole 238 of the screw shaft portion of the bolt 15 penetrating from the nut fitting portion 237 toward the rectangular groove-shaped meat stealer 232 is provided.
FIG. 18 shows a configuration in which one nut 6 is held on the holding material 230, but this is not restrictive. If necessary, a necessary number of nuts 6 can be held in the same direction at intervals in the longitudinal direction of the flat surface portion 231. In some cases, a nut fitting portion 237 is formed at a desired position on another flat surface portion. It is also possible to hold the necessary number of nuts 6 in the required orientation.
If necessary, nuts having different shapes and sizes (screw hole diameters) can be held in the same manner.

Next, the nut holding member 20 shown in FIG.
In FIG. 20, the nut holding member 20 of the sixth embodiment shown in FIGS. 12 and 13 is inserted into the hollow portion of the pipe 13 ′ whose cross section is closed to a quadrangle, and the upper and lower flange equivalent portions 209 are formed. The Example used in the state closely_contact | adhered to the inner surface of the upper and lower sides of pipe 13 'is shown.

Further, in FIG. 21 as Example 11, the nut holding member 23 of Example 9 shown in FIGS. 18 and 19 is used and inserted into the hollow portion of the pipe 13 ′ whose cross section is closed to a quadrangle, An embodiment in which the flange equivalent part 239 is used in a state of being in close contact with the inner surfaces of the upper and lower sides of the pipe 13 'is shown.
The nut holding members 20 and 23 of Examples 10 and 11 are also illustrated as being able to be used in exactly the same manner as the corresponding examples described above and exhibiting similar functions.
Furthermore, although omitted until illustrated, even if the cross-sectional shape of the pipe is hexagonal or polygonal, there is no problem by using a slightly modified cross-sectional shape and size of the holding material to be used. It should be understood that the application examples illustrated in the tenth and eleventh embodiments are applicable and can be implemented in various ways to obtain the above-described effects.

Further, in Examples 1 to 9 of the present application, the bolt connection of a tubular member (pipe) whose cross section is completely closed in a circular shape is illustrated, but for example, an inner sleeve used for a road protection fence, The present invention can be applied to a tubular member having a substantially closed cross section that is not completely closed with a joint gap in the axial direction.
Moreover, in the said Examples 1-11 of this application, about the bolt connection of the tubular member (pipe) with which the cross section was closed circularly, although the illustration of the other member joined with a tubular member is abbreviate | omitted, illustration is abbreviate | omitted The present invention can be similarly applied to bolting a mating member such as a beam pipe or a bracket constituting the protective fence for a road and a tubular member.

  Although the present invention has been described based on the illustrated embodiment, the present invention is not limited to the configuration of the above embodiment. It should be noted that it includes a range of design changes and application variations made by those skilled in the art as needed without departing from the scope and purpose of the invention.

DESCRIPTION OF SYMBOLS 1 Support | pillar 13, 13 'pipe 13a Bolt hole 14-23 Nut holding member 15 Bolt 140-230 Holding material

Claims (3)

A nut holding member that is used by being inserted into a hollow portion of the tubular member when bolting a tubular member having a bolt hole and a mating member having a bolt hole,
The outer peripheral shape of the nut holding member is a shape that comes into contact with the inner peripheral surface of the tubular member from the inside and is restricted from moving in a direction perpendicular to the tube axis of the tubular member,
The nut holding member is characterized in that a nut fitting portion is formed on the outer peripheral portion of the nut holding member to hold the nut so as not to rotate with respect to the screwing of the bolt, and the nut is held in the nut fitting portion. Element.   The nut holding member according to claim 1, wherein the nut fitting portion includes a step portion in which the nut sits in the back portion.   The nut fitting portion is formed as a recess into which the nut is fitted, or as a groove-like portion into which at least two parallel surfaces of the nut are fitted, and the nut held by the nut fitting portion is not rotated with the screwed bolt. The nut holding member according to claim 1, wherein the nut holding member is loosely held.

Images