JP6842017B2 - Nuts, member fixtures and member fixing structures - Google Patents

Description

The present invention relates to a nut in which an opening through which a threaded portion of a component is passed is formed.

Conventionally, nuts have been proposed in which an opening through which a screw portion such as a bolt or a screw bar is passed extends in the axial direction. In this type of nut, the screw hole can be engaged from the side of the screw portion, and the number of times the nut is turned when the screw portion is long can be reduced.

Patent Document 1 describes a horizontal insertion nut including an inner nut and an outer nut. Each of the inner nut and the outer nut is formed with an opening having a width that allows the male screw portion of the hexagon bolt to enter and exit over the entire length in the axial direction. Further, each nut is provided with a locking portion in which both nuts can be screwed into the male screw portion and both nuts can be locked to each other at different angular positions in the opening directions of both openings. ..

Japanese Unexamined Patent Publication No. 5-106625

By the way, the horizontal insertion nut described in Patent Document 1 is composed of two parts, an inner nut and an outer nut, and without these two parts, the horizontal insertion nut cannot be fixed to the threaded portion. .. If this kind of nut can be composed of one part, the configuration can be simplified and it becomes easy to use.

The present invention has been made in view of such circumstances, and in a nut in which an opening for engaging a screw hole from the side is formed in a screw portion of a component, the configuration is simplified and the usability is improved. The purpose is to make it.

In order to solve the above-mentioned problems, in the first invention, an opening connected to the screw hole is formed over the entire length in the axial direction, and the screw portion of the component can be passed through the opening and meshed with the screw hole. A nut body having a structure or shape for turning the nut by a tool or a hand and a fitting part integrally formed on one end side of the nut body are provided, and a gap is provided in the insertion hole of the member. With the screw hole meshed with the threaded part that has been vacated, the nut is turned to fit the fitting part into the insertion hole, so that the fitting part is sandwiched between the inner surface of the insertion hole and the outer surface of the threaded part. It is fixed to the screw part.

According to the second invention, in the first invention, a stepped surface extending outward from one end of the nut body portion and extending in the circumferential direction of the nut except for an opening at the boundary portion between the nut body portion and the fitting portion. Is formed, and on the stepped surface, a protrusion that functions as a loosening stopper is formed on the front side in the rotation direction when the nut is loosened.

The third invention includes a nut of the first or second invention and a tubular member in which an insertion hole is formed, and the tubular member has an opening through which a threaded portion can be passed, which is the total length in the axial direction. It is a member fixture formed by assembling a plurality of divided bodies formed over the above.

The fourth invention is a member fixing structure including the nut of the first or second invention and a fixed member having a threaded portion to which the nut is fixed.

A fifth aspect of the present invention further comprises, in the fourth aspect, an auxiliary member for pressing the fixing target member on which the insertion hole is formed from the side opposite to the side where the fitting portion of the nut is fitted into the insertion hole. I have.

In the first invention, a fitting portion is provided on one end side of the nut main body portion of the nut. For this nut, when a threaded portion is inserted with a gap in the insertion hole of the member, the fitting portion is fitted from one end side into the gap (the gap between the inner surface of the insertion hole and the outer surface of the threaded portion). Then, the fitting portion is sandwiched between the inner surface of the insertion hole and the outer surface of the threaded portion and fixed to the threaded portion. The inventor of the present application has devised a method for fixing a nut using a nut composed of one component and another member. According to the first invention, in a nut in which an opening for engaging a screw hole is formed from the side of a screw portion of a component, the configuration can be simplified and the usability can be improved. The nut may be composed of one component, or may further include a component such as a cover.

In the second invention, since the protrusions are arranged so as to effectively function as a loosening stopper on the stepped surface of the boundary portion between the nut main body portion and the fitting portion, the loosening of the nut can be effectively suppressed. it can.

In the third invention, a tubular member having an insertion hole into which the fitting portion of the nut is fitted is formed by assembling a plurality of divided bodies. Therefore, even if the threaded portion cannot be passed from the end of the threaded portion to the insertion hole of the tubular member (for example, when both ends of the threaded portion are fixed), each divided body is in the middle of the threaded portion. The tubular member can be assembled by passing the threaded portion through the opening of the tubular member from the side so that the threaded portion is inserted into the insertion hole of the tubular member. Therefore, for example, a tubular member is brought into contact with a fixing target member having a notch through which a screw portion can be inserted, and a nut is fitted into the tubular member, or both upper and lower. By bringing each tubular member into contact with each other and fitting a nut into each tubular member, the member to be fixed can be fixed at a predetermined position.

In the fourth invention, the nut in which the insertion hole is formed can be fixed to the threaded portion of the member to be fixed by using the nut of the first or second invention. According to the fourth invention, it is possible to provide a member fixing structure using a nut which is easy to use with a simple structure.

In the fifth invention, since the fixing target member is sandwiched between the nut and the auxiliary member, the fixing target member can be firmly fixed. The auxiliary member may be the same as the nut of the first or second invention, may be a normal nut having no opening, or is a component that is not mounted in the insertion hole. May be good.

(A) A view of the nut from the front side (opening side), (b) A view of the nut from the back side, (c) A view of the nut from the tip side, (d) A view of the nut from the rear end side. Figure seen (A) Schematic configuration diagram of the member fixing structure, (b) Perspective view of the main part of the member fixing structure viewed from below, (c) Schematic configuration diagram of the member fixing structure using the auxiliary member. (A) A view of the nut of the modified example 1 viewed from the front side, (b) a view of the nut of the modified example 1 viewed from the tip side, and (c) a schematic configuration diagram of a member fixing structure using the nut of the modified example 1. (A) A view of the nut of the modified example 2 from the front side, (b) a view of the nut of the modified example 2 from the tip side, and (c) a schematic configuration diagram of a member fixing structure using the nut of the modified example 2. (A) A perspective view of the tubular member of the modified example 3, (b) a perspective view of the divided body of the modified example 3 viewed from the inside, and (c) a state in which the tubular member of the modified example 3 is assembled from a pair of divided bodies. The figure shown, (d) schematic block diagram of the member fixing structure using the tubular member of the modified example 3. Schematic perspective view of the nut in the reference form Schematic perspective view of the nut of another reference form

Hereinafter, embodiments according to the present invention will be described in detail with reference to FIGS. 1 to 2. The following embodiments are examples of the present invention, and are not intended to limit the scope of the present invention, its applications, or its uses.

[1. About the structure of the nut]
The nut 10 is a nut in which an opening 12 for engaging the screw hole 13 from the side is formed in the screw portion 20 of the component. The threaded portion 20 is a portion of a part such as a bolt (for example, a jack bolt) or a screw bar in which a male screw is formed on the outer peripheral surface, and is formed in a rod shape. The nut 10 is manufactured, for example, by processing a long hexagon nut (long nut).

In the nut 10, as shown in FIGS. 1 (a) to 1 (d), an opening 12 having a width capable of passing a screw portion 20 (see FIG. 2) corresponding to its own standard size has a total length. It is formed over. Further, in the screw hole 13 on the inner peripheral surface of the nut 10, a female screw that meshes with the male screw of the screw portion 20 is formed over the entire length. In the present embodiment, the axial direction of the nut 10 is also referred to as "length direction", the opening 12 side is referred to as "front side", one end side is referred to as "tip side", and the opposite side is also referred to as "rear end side".

As shown in FIG. 1A, the opening 12 has a constant width over the entire length of the nut 10. As shown in FIG. 1D, the opening 12 is formed by removing the range of approximately half the circumference of the female screw from the hexagon nut. In the cross-sectional view, the inner width W of the opening 12 is substantially equal to the root diameter of the female screw in the screw hole 13 of the nut 10. The width of the opening 12 gradually increases from the inside to the outside. Further, in the cross-sectional view, the female screw of the screw hole 13 is formed over a range of substantially half a circumference excluding the opening 12.

The nut 10 includes a nut body portion 14 having a shape obtained by removing the opening 12 from the hexagon nut, and a fitting portion 16 (tapered portion) integrally formed at one end of the nut body portion 14. As shown in FIG. 1D, the nut body portion 14 is formed in a substantially U-shaped columnar shape in a cross-sectional view. The cross-sectional shape and dimensions of the nut body 14 are substantially uniform over the length direction thereof. The nut main body 14 is formed by a part having a substantially hexagonal outer peripheral shape as a shape for turning the nut 10 with a tool (nut wrench). The nut 10 can be turned by fitting the nut body 14 into a nut wrench.

As shown in FIG. 1 (c), the fitting portion 16 is formed in a substantially U shape in a cross-sectional view. As shown in FIG. 1B, the outer peripheral surface of the fitting portion 16 is a tapered surface that narrows from one end of the nut main body portion 14 toward the tip end. The tip of the fitting portion 16 has a small thickness. The taper angle of the outer peripheral surface of the fitting portion 16 may be relatively small as shown in FIG. 1 or relatively large as shown in FIG. 2 (c).

[2. About member fixing structure]
The member fixing structure 30 using the nut 10 will be described with reference to FIGS. 2A to 2B.

The member fixing structure 30 includes the above-mentioned nut 10, a fixed member 26 having a screw portion 20, and a fixing target member 25 having an insertion hole 28 through which the screw portion 20 is inserted with a gap. .. The fixing target member 25 does not have to be included in the member fixing structure 30.

For example, the fixing target member 25 is a plate-shaped member, and the shape of the insertion hole 28 is circular. The fixed member 26 is, for example, a jack bolt and is fixed to the foundation of a building or the like. The fixed member 26 may be a screw bar composed of only the screw portion 20, a bolt other than the jack bolt, or an article other than these. Further, the bolt for suspending the ceiling plate in the building may be the fixed member 26.

The diameter of the insertion hole 28 is larger than the outer diameter of the male screw of the threaded portion 20 (diameter at the top), larger than the outer diameter of the tip on the outer peripheral surface of the fitting portion 16, and the width across flats of the nut body portion 14. It is smaller than (distance between surfaces facing each other). The outer diameter of the tip on the outer peripheral surface of the fitting portion 16 is larger than the outer diameter of the male screw of the screw portion 20. Therefore, with the nut 10 inserted into the threaded portion 20 from the side and the female thread of the nut 10 meshed with the male thread of the threaded portion 20, the nut 10 is turned to connect the inner surface of the insertion hole 28 and the outer surface of the threaded portion 20. The fitting portion 16 can be fitted into the gap from the tip side. Then, by fitting the tip end side of the fitting portion 16 into the gap, each of the fixing target member 25 and the nut 10 is fixed to the screw portion 20. The tip end side of the fitting portion 16 is sandwiched and fixed between the inner surface of the insertion hole 28 and the outer surface of the screw portion 20, and the fixing target member 25 is fixed by fitting the tip end side of the fitting portion 16. The nut 10 functions as a stopper for the member to be fixed 25.

For example, as an article having a member fixing structure, in addition to the above-mentioned building equipped with jack bolts, for example, a support with an adjustable height of a support base, a shelf with an adjustable height of a shelf board, and the like can be mentioned. Be done. In these examples, the support base corresponds to the fixing target member 25 in the support, and the shelf board corresponds to the fixing target member 25 in the shelf. A plurality of insertion holes 28 are formed in the member to be fixed 25, and a screw portion 20 of the member to be fixed 26 is inserted into each insertion hole 28.

The user adjusts the height of the fixing target member 25 to a desired height and holds the member 25. Then, after inserting the nut 10 at a height directly below the insertion hole 28 in the screw portion 20 with the fitting portion 16 facing upward, the nut 10 is turned to move it upward. The nut 10 is tightened until the tip end side of the fitting portion 16 fits into the gap between the inner surface of the insertion hole 28 and the outer surface of the screw portion 20. The nut 10 is tightened at a low rotation speed. By tightening each nut 10, the fixing target member 25 (support base, shelf plate) and each nut 10 are fixed to the screw portion 20.

As shown in FIG. 2C, the member fixing structure 30 is the same as the second nut 10b (for example, the same as the nut 10a) in which the fitting portion 16 is fitted into the insertion hole 28 from the upper side of the member to be fixed 25. ) May be further provided. In FIG. 2C, tapered surfaces extending toward the inlet side of the nuts 10a and 10b are formed on both the upper and lower sides of the insertion hole 28. The fitting portions 16 of the nuts 10a and 10b are in contact with each tapered surface of the insertion hole 28. The second nut 10b corresponds to an auxiliary member.

[3. Effects of the embodiment, etc.]
In the present embodiment, the outer peripheral surface of the fitting portion 16 provided on one end side of the nut main body portion 14 is configured by a tapered surface that narrows as it approaches one end of the fitting portion 16. Therefore, when the screw portion 20 is inserted through the insertion hole 28 of the fixing target member 25 with a gap, one end side of the fitting portion 16 is fitted into the gap to fit the fixing target member 25 and the nut 10 into the screw portion 20. Each can be fixed to the screw portion 20. According to the present embodiment, in the nut 10 in which the opening 12 for engaging the screw hole 13 is formed from the side of the screw portion 20 of the component, the configuration can be simplified and the usability can be improved.

Further, in the present embodiment, the nut 10 composed of one component can be used to fix the fixing target member 25 to the screw portion 20 together with the nut 10. According to the present embodiment, it is possible to provide a member fixing structure 30 using a nut 10 which is simple and easy to use. Further, according to the member fixing structure 30 of FIG. 2C, since the fixing target member 25 is sandwiched between the first nut 10a and the second nut 10b, the fixing target member 25 can be firmly fixed.

[4. Modification 1]
As shown in FIGS. 3A and 3B, the nut 10 of the present modification 1 has a different shape of the fitting portion 16 from the above-described embodiment. The fitting portion 16 has a shape obtained by removing the opening 12 from a cylinder having a screw hole 13 formed inside. The outer diameter of the fitting portion 16 is substantially uniform over the length direction thereof. The outer diameter of the fitting portion 16 is shorter than the width across flats (distance between surfaces facing each other) of the nut main body portion 14. Therefore, at the boundary between the nut main body 14 and the fitting portion 16 in the length direction, a stepped surface 15 extending outward from one end of the nut main body 14 and extending in the circumferential direction of the nut 10 except for the opening 12 is provided. It is formed.

As shown in FIG. 3C, the nut 10 of the present modification 1 is used to fix the fixing target member 25 having the insertion hole 28 formed from the lower side. A screw portion 20 is inserted into the insertion hole 28 with a gap. The diameter of the insertion hole 28 is substantially equal to the outer diameter of the fitting portion 16.

When fixing the fixing target member 25, first, the spring washer 17 is passed through the screw portion 20, and then the screw portion 20 is passed through the insertion hole 28 of the fixing target member 25 from above. Then, after inserting the nut 10 (first nut 10a) under the spring washer 17 with the fitting portion 16 facing upward, the nut 10 is turned with the screw hole 13 meshed with the screw portion 20. And move it upward. The nut 10 is tightened until the tip end side of the fitting portion 16 fits into the gap between the inner surface of the insertion hole 28 and the outer surface of the screw portion 20. By tightening the nut 10, the member to be fixed 25 and the nut 10 are fixed to the threaded portion 20.

As shown in FIG. 3C, a second nut 10b may be used to fix the fixing target member 25 from above as well. In this case, the upper and lower nuts 10a and 10b are oriented toward the opening 12. Are preferably different from each other. The point that the second nut 10b (auxiliary member) can be used from the upper side is the same in other modified examples.

[5. Modification 2]
In the first modification, the spring washer 17 is sandwiched between the fixing target member 25 and the nut body 14 to prevent loosening. However, in the second modification, the spring washer 17 is not provided, and FIG. 4A and FIG. As shown in (b), the protrusion 21 is provided on the stepped surface 15.

The protrusion 21 is arranged in the vicinity of the opening 12 on the stepped surface 15. On the substantially C-shaped stepped surface 15, the protrusion 21 is located on the front side in the rotation direction X (see FIG. 4B) when the nut 10 is loosened. The protrusion 21 extends along the outer circumference. The protrusion 21 has a gentler inclination on the rear surface side than on the front surface side in the rotation direction X. The front surface side of the protrusion 21 rises substantially perpendicular to the stepped surface 15. Therefore, when the nut 10 is rotated in the tightening rotation direction, the friction between the protrusion 21 and the fixing target member 25 does not become so large, but when the nut 10 is rotated in the opposite direction X, the protrusion 21 and the fixing target member 25 Friction increases.

According to the second modification, since the protrusion 21 is arranged so as to effectively function as a loosening stopper on the stepped surface 15 of the nut 10, the loosening of the nut 10 can be effectively suppressed. A plurality of protrusions 21 may be formed on the stepped surface 15, or may be continuously jagged. Also in this case, the jagged inclined surface has a gentler inclination on the rear surface side than on the front surface side in the rotation direction X. Further, the protrusion 21 may have another shape such as a hemispherical shape.

[6. Modification 3]
The third modification is a member fixing structure 30 for fixing the fixing target member 25 by using the member fixing tool 40 including the tubular member 35 shown in FIG. The member fixture 40 includes the nut 10 of the above-described embodiment and a tubular member 35 having an insertion hole 28 having a shape corresponding to the fitting portion 16 of the nut 10. On the inner surface of the tubular member 35, one end side is a tapered surface 41 extending toward one end, and the other end side is a tapered surface 42 extending toward the other end. The inner diameter is uniform between the tapered surface 41 on one end side and the tapered surface 42 on the other end side. Each of the tapered surface 41 on one end side and the tapered surface 42 on the other end side has substantially the same inclination as the tapered surface on the outer peripheral surface of the fitting portion 16 of the nut 10.

Further, as shown in FIG. 5A, the tubular member 35 is formed by assembling a pair of divided bodies 36 and 37 having the same size and shape as each other. As shown in FIG. 5B, each of the divided bodies 36 and 37 has an opening 36a and 37a through which 20 screw portions can be passed and a mating structure 36b and 37b of the paired divided bodies 36 and 37. The fitting structures 36b and 37b are formed so as to be fitted to each other. In each of the divided bodies 36 and 37, the fitting structures 36b and 37b are formed by unevenness adjacent to each other.

In the third modification, for example, a notch 38 (for example, a U-shaped cut) through which the screw portion 20 of the screw bar 26 can be inserted into the screw bar 26 having both ends embedded using the two member fixtures 40 is used. The fixing target member 25 in which the notch) is formed can be fixed.

Specifically, as shown in FIG. 5C, a pair of fitting structures 36b and 37b are fitted to each other by passing a screw portion 20 through the openings 36a and 37a of the divided bodies 36 and 37 from the side. The tubular member 35 can be assembled from the divided bodies 36 and 37 of the above. That is, the tubular member 35 can be assembled in the middle of the threaded portion 20 so that the threaded portion 20 is inserted through the insertion hole 28 of the tubular member 35 with a gap. Therefore, as shown in FIG. 5D, with the screw portion 20 passed through the notch 38 of the fixing target member 25, the solid target member 25 is sandwiched between the tubular members 35 from above and below, and nuts are inserted into each tubular member 35. By fitting the 10, the fixing target member 25 can be fixed at a predetermined position. One nut 10 corresponds to an auxiliary member.

According to the third modification, it is possible to provide a member fixing tool 40 capable of fixing the fixing target member 25 at a predetermined position from the middle of the screw portion 20. The member to be fixed 25 can be fixed at a predetermined position by using one member fixing tool 40. In this case, the tubular member 35 is brought into contact with the fixing target member 25 from below, and the nut 10 is fitted into the tubular member 35. The fixing target member 25 is placed on the tubular member 35 and the height position is fixed.

[7. Other variants]
In the above-described embodiment, the diameter of the insertion hole 28 of the member to be fixed 25 is uniform in the axial direction, but the inner surface of the insertion hole 28 may be a tapered surface extending toward the inlet side of the nut 10. See FIG. 2 (c)).

In the above embodiment, the nut body 14 has a shape in which the opening 12 is removed from the hexagon nut, but has a shape in which the opening 12 is removed from another type of nut such as a wing nut. You may.

In the above-described embodiment, as the second nut 10b, a normal nut having no opening 12 may be used.

[8. Reference form]
A reference embodiment as a reference of the present embodiment will be described. 6 and 7 are one of the reference forms. The nut 50 of the reference embodiment is in a state in which the nut body 51 having the same structure and shape as the nut body 14 described above and the screw hole 53 of the nut body 51 are engaged with the screw portion 20 (not shown in FIGS. 6 and 7). It is provided with a restraint 55 that restrains the nut body 51.

Specifically, the nut body 51 is formed with an opening 52 having a width capable of passing the screw portion 20 corresponding to its own standard size over the entire length. Further, in the screw hole 53 on the inner peripheral surface of the nut 10, a female screw that meshes with the male screw of the screw portion 20 is formed over the entire length. The nut body 51 has a shape obtained by removing the opening 52 from the polygonal nut (hexagon nut).

The restraint 55 shown in FIG. 6 is a bolt attached to the opening 52 of the nut body 51. In the nut body 51, restraint screw holes 56a and 56b into which the screw portion 55a of the restraint 55 is screwed are formed at positions facing each other at each of the portions facing each other with the opening 52 interposed therebetween. In the nut 50 of FIG. 6, the nut body 51 is inserted into the screw portion 20 from the side, the female screw of the nut body 51 is engaged with the male screw of the screw portion 20, and then the restraint 55 is inserted from one of the restraint screw holes 56a. Then, the tip of the screw portion 55a of the restraint 55 is screwed into the other restraint screw hole 56b.

In this state, the nut body 51 is firmly engaged with the screw portion 20, and the restraint 55 is in contact with the outer peripheral surface of the screw portion 20. Therefore, the nut body 51 is fixed in a state where its axis coincides with the axis of the screw portion 20. The nut 50 in this state can be turned to move the screw portion 20 in the axial direction.

The restraint 55 shown in FIG. 7 includes a band 66 for tightening the nut body 51 from the outside, and fixing screws 67 screwed into the screw holes 66a at both ends of the band 66. Both ends of the band 66 overlap each other. In the nut 50 of FIG. 7, after the nut body 51 is engaged with the screw portion 20, the band 66 is arranged on the outside of the nut body 51, and the fixing screw 67 is screwed into the screw hole 66a of the band 66 for fixing. The tip surface of the screw 67 is pressed against the outer peripheral surface of the nut body 51. As a result, similarly to FIG. 6, the nut body 51 is fixed in a state where its axis coincides with the axis of the screw portion 20. The restraint 55 in FIGS. 6 and 7 is an example, and may have another configuration as long as the axial center position of the net main body 51 can be fixed to the screw portion 20.

The present invention can be applied to a nut or the like having an opening through which a threaded portion of a component is passed.

10 Nut 12 Opening 13 Threaded hole 14 Nut body 16 Fitting part 20 Threaded part 28 Insertion hole

Claims (5)

A nut in which an opening connected to a screw hole is formed over the entire length in the axial direction, and the screw portion of a component can be passed through the opening and meshed with the screw hole.
A nut body having a structure or shape for turning the nut with a tool or hand,
A fitting portion integrally formed on one end side of the nut body portion is provided.
With the screw hole meshed with the screw portion inserted with a gap in the insertion hole of the member, the fitting portion is fitted into the insertion hole by turning the nut to fit the fitting portion into the insertion hole. It is sandwiched between the inner surface of the insertion hole and the outer surface of the threaded portion and fixed to the threaded portion .
At the boundary between the nut main body and the fitting portion, a stepped surface extending outward from one end of the nut main body and extending in the circumferential direction of the nut is formed.
The nut has a shape in which the opening is removed from a cylinder in which a screw hole that meshes with the screw portion is formed inside. A nut in which an opening connected to a screw hole is formed over the entire length in the axial direction, and the screw portion of a component can be passed through the opening and meshed with the screw hole.
A nut body having a structure or shape for turning the nut with a tool or hand,
A fitting portion integrally formed on one end side of the nut body portion is provided.
The outer peripheral surface of the fitting portion has a tapered surface that narrows as it approaches the tip.
The taper angle of the tapered surface is such that the screw hole is engaged with the screw portion inserted with a gap in the insertion hole of the member, and the nut is turned to fit the fitting portion into the insertion hole. By tightening, the fitting portion is sandwiched between the inner surface of the insertion hole and the outer surface of the screw portion and fixed to the screw portion, and the fitting portion is fixed to the member on which the insertion hole is formed. A nut, which is a possible angle. A tubular member inserted through holes are formed,
A nut in which an opening connected to a screw hole is formed over the entire length in the axial direction, and the screw portion of the component can be passed through the opening and meshed with the screw hole. The threaded portion provided with a nut body portion having a structure or shape for turning and a fitting portion integrally formed on one end side of the nut body portion, and inserted with a gap in the insertion hole of the tubular member. By turning the nut to fit the fitting portion into the insertion hole in a state where the screw hole is meshed with the screw hole, the fitting portion is sandwiched between the inner surface of the insertion hole and the outer surface of the screw portion. and a nut that is secured to the threaded portion Te,
The tubular member is formed by assembling a plurality of divided bodies in which an opening through which the threaded portion can be passed is formed over the entire length in the axial direction.
A member fixture, characterized in that the fitting portion of the nut can be rotated with respect to the insertion hole in a state where the fitting portion of the nut is fitted into the insertion hole. The nut according to claim 1 or 2,
A member fixing structure comprising the threaded portion and a fixed member to which the nut is fixed. The fixing target member in which the insertion hole is formed is further provided with an auxiliary member for pressing the fixing target member from a side opposite to the side where the fitting portion of the nut is fitted into the insertion hole. , The member fixing structure according to claim 4.

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