JP2014020504A - Nut - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive nut that can be stably rotated when screwed and consists of the small number of components.SOLUTION: A nut 1 according to the present invention comprises: a pair of split nut sections 3a, 3b split into two on a plane along a screwing direction; and a coupling section 5 for coupling the pair of split nut sections 3a, 3b with each other at one end in a circumferential direction. Each of the split nut sections 3a, 3b has a screw section 7 on which a female screw is formed. One split nut section 3a has a held section 9a provided on an outer peripheral side of the screw section 7 and at the other end in the circumferential direction, and the other split nut section 3b has holding sections 13a, 13b provided on the outer peripheral side of the screw section 7 and at the other end in the circumferential direction, and holding the held section 9 of the split nut section 3a in a screwing direction. A protrusion 11 is formed on at least one opposite face on which the holding sections 13a, 13b and the held section 9 are opposed to each other, and a recess 16 fitted with the protrusion 11 is formed on the other opposite face.

Description

  The present invention relates to a nut that can be attached to and detached from a side surface of a long bolt.

Conventionally, when a nut is screwed and fastened to a long bolt, such as a suspension bolt, it is troublesome to screw and tighten the nut from the end of the bolt shaft part. It is known to detach and fasten.
For example, Patent Document 1 discloses a nut for mounting a pair of split nut portions divided into two along a surface along the screwing direction from the side surface of the bolt shaft portion.

  In the nut of Patent Document 1, one split nut portion and the other split nut portion are connected at one end in the circumferential direction by a hinge, and at the other end facing each other, one split nut is biased by a biasing member. When the nut is tightened and screwed, the pin abuts against the fixed object and the pin is pushed into the other end of the other split nut, so that one split nut and the other It is disclosed that the split nut portion is fixed.

JP 2009-63070 A

However, in the technique of Patent Document 1, when one split nut portion and the other split nut portion are attached to the side surface of the bolt shaft portion, the two split nut portions are not fixed to each other. There is a problem of becoming stable.
Further, since parts such as hinges, pins, and springs are necessary, there is a problem that the number of parts increases and the manufacturing cost increases.

  Therefore, an object of the present invention is to provide an inexpensive nut that can be stably rotated when it is screwed and has a small number of parts.

  In order to solve the above-mentioned problem, the invention described in claim 1 is configured such that a pair of split nut portions divided into two along a surface along the screwing direction and a pair of split nut portions are connected to each other at one end in the circumferential direction. Each split nut portion has a screw portion in which a female screw is formed, and one split nut portion has a clamped portion provided at the outer peripheral side of the screw portion and at the other end in the circumferential direction. The other split nut portion is provided on the outer peripheral side of the screw portion and at the other circumferential end, and has a sandwiching portion for sandwiching the sandwiched portion of the one split nut portion in the screwing direction. The sandwiched portion and the sandwiching portion The nut is characterized in that a protrusion is formed on at least one of the opposing surfaces facing each other, and a recess in which the protrusion is fitted is formed on the other opposing surface.

  According to a second aspect of the present invention, in the first aspect of the present invention, the connecting portion includes a sandwiched portion provided in the other split nut portion and a split nut portion provided in the one split nut portion, and the sandwiched portion is screwed. A projecting portion is formed on at least one facing surface where the sandwiched portion and the sandwiching portion of the coupling portion face each other, and a recess into which the projecting portion is fitted is formed on the other facing surface. The one split nut portion and the other split nut portion are formed in the same shape.

  According to a third aspect of the present invention, in the invention of the second aspect, the protrusion of each sandwiched portion has a curved surface shape, and each recess is a hole that penetrates the sandwiching portion to which the protrusion is opposed. It is characterized by that.

  According to a fourth aspect of the present invention, in the second aspect of the present invention, the protrusion of each sandwiched portion is a protrusion having an inclined surface facing the screwing direction or the opposite direction, and each recess is a protrusion. It has an inclined surface that comes into contact with the inclined surface of the strip, and the protrusion is formed long in the direction intersecting the rotation direction of the nut, and the inclined surface of the protrusion and the inclined surface of the recess are in surface contact. To do.

  According to a fifth aspect of the present invention, in the first aspect of the invention, the pair of split nut portions are integrally formed of a resin material, and the connecting portion includes one split nut portion and the other split nut portion. Is characterized in that it can be bent.

According to the first aspect of the present invention, one split nut portion and the other split nut portion are connected to each other at one end portion by a connecting portion, and at the other end portion facing each other, the sandwiched portion of one split nut and Since the projecting part and the recessed part are fitted and sandwiched with the clamping part of the other split nut, after mounting the nut on the bolt shaft part, one split nut part and the other split nut part are assembled. It can be turned and screwed stably in the state.
Since the sandwiching portion and the sandwiched portion are fitted with the projection and the recess, and parts such as pins and springs are not required unlike the prior art, the number of parts can be reduced and the cost is low.
In the state where the nut has been turned and the nut is tightened to the bolt shaft, the one split nut portion and the other split nut portion are in the direction opposite to the screwing direction. Since it will be in the state pressed strongly toward, it is hold | maintained at a bolt axial part.

  According to the second aspect of the present invention, the same effect as that of the first aspect of the invention can be obtained, and the connecting part can be configured in the same manner as the sandwiched part and the sandwiched part on the other end side. Since the split nut portion and the other split nut portion have the same shape, the same type can be used for one split nut portion and the other split nut portion.

  According to the invention described in claim 3, the same effect as that of the invention described in claim 2 can be obtained, and the concave portion can be easily formed in the clamping portion even on the surface facing the sandwiched portion. easy.

  According to the invention described in claim 4, while having the same effect as that of the invention described in claim 2, the force in the turning direction of the nut can be received by the inclined surfaces of the two protrusions. When turning and after the nut has been turned, the connection between one split nut portion and the other split nut portion can be strengthened.

According to the invention described in claim 5, while having the same effect as that of the invention described in claim 1, since one split nut portion and the other split nut portion are integrally formed and connected, It can be handled as one part and is easy to handle.
Since the nut is formed of a resin material, it can be manufactured easily.

It is a perspective view of a nut concerning a 1st embodiment of the present invention, and (a)-(c) is a figure which shows a process of attaching a nut to a bolt axis part one by one. It is a figure of the nut shown in FIG. 1, (a) is a front view, (b) is a side view, (c) is a top view. It is a figure which shows the effect | action of the nut shown in FIG. 1, (a) is a side view of the state which is turning and screwing a nut, (b) is a side view which shows the state which fastened the nut to the fixed object. is there. It is a perspective view of the nut which concerns on 2nd Embodiment of this invention, (a) is a state before an assembly | attachment of a pair of division | segmentation nut part, (b) is a state after an assembly, (c) is when turning a nut. State. It is a figure of one division | segmentation nut part shown in FIG. 4, (a) is a front view, (b) is a top view, (c) is a side view. It is a perspective view of the nut which concerns on 3rd Embodiment of this invention, (a) is the state which assembled | attached a pair of split nut part, (b) is a figure which shows the state which opened a pair of split nut. It is a figure of the one and other division | segmentation nut parts shown in FIG. 6, (a) is a perspective view, (b) is a top view, (c) is a front view. It is a figure of the one and other division nut parts concerning a 4th embodiment of the present invention, (a) is a perspective view, (b) is a front view, (c) is a top view, (d) is a side view. is there. It is a figure of the nut which concerns on 4th Embodiment of this invention, (a) is a perspective view which shows the state which assembled | attached a pair of division | segmentation nut part, (b) is a front view. It is a figure of one and the other split nut part concerning a 5th embodiment of the present invention, (a) is a perspective view, (b) is a top view, (c) is a front view, (d) is a side view. is there. It is a figure of the nut which concerns on 5th Embodiment of this invention, (a) is a perspective view which shows the state which assembled | attached a pair of division | segmentation nut part, (b) is a front view. It is a perspective view of the nut which concerns on the modification of 3rd Embodiment, (a) shows the state which opened a pair of split nut, (b) is a figure which shows the state which assembled | attached a pair of split nut part. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, the first embodiment of the present invention will be described with reference to FIGS.
The nut 1 according to the first embodiment is mounted from the side in the middle of the long bolt shaft portion 20, and a pair of split nut portions 3a and 3b divided into two on the surface along the screwing direction A1, And a connecting portion 5 that connects the pair of split nut portions 3a and 3b to each other at one end in the circumferential direction. The pair of split nut portions 3a and 3b and the connecting portion 5 are made of a resin material and are integrally formed.

  One split nut portion 3 a includes a screw portion 7 in which a female screw is formed, and a sandwiched portion 9 provided on the outer peripheral side of the screw portion 7 and on the other end opposite to the connecting portion 5. The sandwiched portion 9 has a hemispherical protrusion 11 formed on the surface in the screwing direction A1.

The other split nut portion 3 b includes a screw portion 7 in which a female screw is formed, and a pair of clamping portions 13 a and 13 b provided on the outer peripheral side of the screw portion 7 and on the other end opposite to the connecting portion 5. ing. The pair of sandwiching portions 13a and 13b project from the screw portion 7 in parallel with each other with a spacing S in the screwing direction A1.
The distance S between the opposing surfaces of the pair of sandwiching portions 13a and 13b is narrower than the thickness H of the protruding portion 11 and the sandwiched portion 9 of one split nut portion 3a.

  A circular recess 16 is formed in the clamping part 13a in the screwing direction A1 on the surface facing the other clamping part 13b. The concave portion 16 is an end portion of the through hole 15 penetrating in the screwing direction.

As shown in FIG. 1 (c), one split nut portion 3a and the other split nut portion 3b form a square shape in plan view when assembled and fixed to each other. Each split nut portion 3a, 3b has an anti-slip groove 17 formed on the outer peripheral side surface.
The connecting portion 5 is thin and can be bent.

Next, handling, operation, and effects of the nut 1 according to the first embodiment will be described.
As shown in FIG. 1 (a), when the bolt shaft 20 is mounted, the screw portion 7 of the other split nut portion 3b is applied to the side surface of the bolt shaft portion 20, and one of the split nut portions 3b as shown in FIG. As shown in FIG. 1C, the split nut portion 3a is rotated so that the screw portion 7 of one split nut portion 3a is brought into contact with the bolt shaft portion 20 with the connecting portion 5 as a rotation axis. The clamped portion 9 of one split nut portion 3 a is fitted between the clamped portions 13 a and 13 b of the split nut portion 3 b, and the nut 1 is attached to the bolt shaft 20.

  In FIG. 1C, when the sandwiched portion 9 of one split nut portion 3 a is fitted between the sandwiched portions 13 a and 13 b of the other split nut portion 3 b, the sandwiched portion 9 is sandwiched between the protrusions 11 of the sandwiched portion 9. When the attachment portion 13a is pushed, the space S between the attachment portions 13a and 13b is slightly widened due to elasticity, the protrusion 11 enters the recess 16, and the attachment portions 13a and 13b are elastically restored, so that the attachment portion 13a is restored. , 13b, the sandwiched portion 9 is locked.

  Next, as shown in FIG. 3A, the nut 1 is turned and screwed, and the nut 1 is brought into contact with the fixing portion 22 as shown in FIG. At this time, the pinching portion 13a on the fixing portion side of one split nut portion 3a is strongly pressed against the fixing portion 22 so that the pinching portion 13a on the fixing portion side and the pinched portion 9 are strongly pressed. Thus, the protrusion 11 further bites into the recess 16 and the fixation between the one split nut portion 3a and the other split nut portion 3b is strengthened.

According to the first embodiment, one split nut portion 3a and the other split nut portion 3b are integrated with each other by connecting one end thereof with the connecting portion 5, and therefore can be handled as one part. Easy to handle.
In the sandwiched portion 9 of the one split nut portion 3a and the sandwiched portion 13a of the other split nut portion 3b, the protrusion 11 and the recess 16 are fitted and sandwiched, so that one split nut portion 3a After the other split nut portion 3b is attached to the bolt shaft portion 20, it can be rotated stably and screwed in a state in which they are integrated.
As shown in FIG. 3B, in the state where the nut 1 has been turned and the nut 1 is in pressure contact with the fixed portion 22, one divided nut portion 3 a and the other divided nut portion 3 b are connected to the bolt shaft portion 20. Since the screw strip of the screw portion 7 is strongly pressed against the screw strip in the direction A2 opposite to the screwing direction, the bolt shaft portion 20 is also held by this pressing force.

Since the concave portion 16 is formed by the through-hole 15, the concave portion 16 can be easily formed on the surface of the sandwiching portion 13a facing the sandwiched portion 9 and is easy to manufacture.
Since the projecting portion 11 and the recessed portion 16 are fitted to the sandwiching portion 13a and the sandwiched portion 9 and parts such as pins and springs are not required unlike the prior art, the number of parts can be reduced and the cost can be reduced. Further, the nut 1 can be stably rotated when it is screwed.

Since the entire nut 1 is formed of a resin material, it can be easily manufactured by molding.
When the nut 1 is brought into contact with the fixing portion 22 and tightened, the concave portion 16 of the one sandwiching portion 13a and the protrusion 11 of the sandwiched portion 9 come into strong contact with each other, so that the sandwiching portions 13a and 13b and the sandwiched portion 9 Can be firmly fixed.

Other embodiments of the present invention will be described below. In the embodiments described below, the same reference numerals are given to the portions having the same functions and effects as those of the first embodiment described above. The description of this part is omitted, and the following description will mainly explain the differences from the first embodiment.
A nut 1 according to a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. In the nut 1 according to the second embodiment, one split nut portion 3a and the other split nut portion 3b have the same shape and are separated from each other, and the same type is divided into one split nut portion 3a and the other split nut portion 3b. It is used as the split nut portion 3b.
That is, a pair of clamping portions 13a and 13b are formed on one end side in the circumferential direction on the outer peripheral side of the screw portion 7 of one split nut portion 3a, and one clamping portion 13a on the screwing direction A1 side. The concave portion 16 is formed on the surface facing the other sandwiching portion 13b, and the concave portion 16 is one end of the through hole 15 that penetrates the one sandwiching portion 13a.

On the outer peripheral side of the screw portion 7 of the other split nut portion 3b, a locked portion 9 is formed at one end side in the circumferential direction, and the surface of the locked portion 9 on the screwing direction A1 side is hemispherical. The protrusion 11 is formed.
That is, one split nut portion 3a and the other split nut portion 3b are each formed with a clamped portion 9 at one end portion in the circumferential direction on the outer peripheral side of the screw portion 7, and at the other end portion in the circumferential direction. Are formed with pinching portions 13a and 13b.
Moreover, in this 2nd Embodiment, the connection part 5 is comprised by the to-be-clamped part 9 of one division | segmentation nut part 3a, and the clamping parts 13a and 13b of the other division | segmentation nut part 3b, The other division | segmentation nut The recessed part 16 provided in the clamping part 13a of the part 3b and the protrusion 11 provided in the to-be-clamped part 9 of one division | segmentation nut part 3a are fitting.

According to the nut 1 according to the second embodiment, the first embodiment described above except that one split nut portion 3a and the other split nut portion 3b are integrally connected by the connecting portion 5. The same operational effects can be achieved.
Furthermore, since one split nut portion 3a and the other split nut portion 3b have the same shape, the same type can be used for one split nut portion 3a and the other split nut portion 3b.

  With reference to FIG.6 and FIG.7, the nut 1 concerning 3rd Embodiment of this invention is demonstrated. In the third embodiment, as shown in FIG. 7C, the sandwiched portion 9 is formed with protrusions 11 on both sides in the screwing direction A1 and on the opposite side, and a pair of sandwiches. Unlike the second embodiment, the through holes 15 are formed in the portions 13a and 13b, and the concave portions 16 are formed on the respective opposing surfaces. Furthermore, as shown to Fig.6 (a), it is also different from 2nd Embodiment that the outer peripheral shape of the nut 1 comprises the hexagon.

According to the third embodiment, the same effects as those of the second embodiment described above can be obtained, and the protrusions 11 are formed on the opposing surfaces of the sandwiched portions 9 with the sandwiched portions 13a and 13b. Since each of the sandwiching portions 13a and 13b is formed with a recess 16 into which the projection 11 is fitted, the nut 1 can be used regardless of which side of the sandwiching portions 13a and 13b is in the screwing direction A1. When one is tightened, one split nut portion 3a and the other split nut portion 3b can be pressed against the fixing portion 22. That is, it is easy to handle because there is no vertical direction.
Moreover, since the to-be-clamped part 9 can provide the protrusion 11 on both surfaces and can be fitted to the two clamping parts 13a and 13b, compared with 2nd Embodiment, one split nut part 3a and the other split nut part 3b can be firmly assembled.

With reference to FIG.8 and FIG.9, the nut 1 concerning 4th Embodiment of this invention is demonstrated. In the fourth embodiment, one split nut portion 3a and the other split nut portion 3b have the same shape, and a pair of sandwiching portions 13a and 13b are formed on the left and right sides on the outer peripheral side of the screw portion 7, respectively. On the opening 7a side of the screw portion 7, sandwiched portions 9, 9 are formed so as to protrude on both the left and right sides. As shown in FIG. 9, the front ends of the sandwiched portions 9 and 9 have dimensions that are located between the sandwiched portions 13a and 13b when one split nut portion 3a and the other split nut portion 3b are assembled. .
Each of the sandwiched portions 9 and 9 is formed with a protrusion 11. The protrusion 11 has a substantially triangular cross section, and one surface of the protrusion is inclined in the screwing direction A <b> 1. It is the surface 11a.
In each of the pair of left and right sandwiching portions 13a and 13b, the recess 16 is a stepped recess, and the step is an inclined surface 16a. The inclined surface 16 a of the step portion is inclined substantially parallel to the inclined surface 11 a of the protrusion 11.

  As shown in FIG. 9, when one split nut portion 3a and the other split nut portion 3b are attached to the bolt shaft portion 20, the sandwiching portions 13a, 13a of the one split nut portion 3a with respect to the screwing direction A1. By reversing the clamping parts 13a, 13a of the other split nut part 3b and applying the screw part 7 to the bolt shaft part 20 and inserting the clamped part 9 between the clamping parts 13a, 13b, The split nut portion 3a and the other split nut portion 3b are assembled together. As shown in FIG. 8 (d), the dimension S between the sandwiching portions 13a and 13b is smaller than the total thickness H of the sandwiched portion 9 and the projection 11, and the tip of the projection 11 is wedge-shaped. Therefore, when one split nut portion 3 a and the other split nut portion 3 b are assembled, the tip of the protrusion 11 is locked to the bottom surface of the recess 11. At the same time, the inclined surface 11a of each protrusion 11 and the inclined surface 16a of the recess 16 come into contact with each other on the surface.

When turning the nut 1, the nut 1 is turned as shown in FIG. 9A in a state where the inclined surface 11 a of each protrusion 11 and the inclined surface 16 a of the recess 16 are in contact with each other. When the nut 1 is being rotated, the inclined surface 11a of each protrusion 11 and the inclined surface 16a of the recess 16 receive the force in the direction of rotation, and the one divided nut portion 3a and the other divided nut portion 3b rotate together. Screw.
Then, when the other split nut portion 3b that is in pressure contact with the fixing portion 22 and is further away from the fixing portion 22 is turned so as to be tightened, the tip of the protrusion 11 becomes the bottom surface of the recess as shown in FIG. 9B. Cut into more.

According to the fourth embodiment, the same effects as those of the third embodiment described above can be obtained, and the force in the turning direction of the nut 1 can be received by the surfaces of the two protrusions 11. When the nut 1 is turned and after the nut 1 is turned, the connection between the one split nut portion 3a and the other split nut portion 3b can be strengthened.
When the other divided nut portion 3b located further away from the fixed portion 22 is further tightened when pressed against the fixed portion 22, the tip of the projection 11 bites into the concave portion 11, so that it can be firmly fixed and one divided nut portion 3a. And the other split nut portion 3b can be prevented from falling off.

With reference to FIGS. 10 and 11, a fifth embodiment of the present invention will be described. In the fifth embodiment, one split nut portion 3a and the other split nut portion 3b have the same shape.
As shown in FIG. 10, one split nut portion 3 a is provided with a screw portion 7, and arm portions 24 are provided on both the left and right sides of the screw portion 7, and the arm portion 24 is screwed from the outer peripheral side portion of the screw portion 7. The tip 24 a protrudes beyond the opening 7 a of the part 7.

  As shown in FIG. 10 (c), the arm portion 24 is formed with a thickness T2 that is substantially half of the height T1 of the screw portion 7 in the screwing direction A1. Further, as shown in FIG. 10B, the arm portion 24 has a dimension V1 from the opening 7a to the front end 24a of the screw portion 7 that is substantially the same as a dimension V2 from the rear end 7b of the screw portion 7 to the opening 7a. is there.

In the arm portion 24, a concave portion 16 is formed in the base end portion 24b located on the rear end 7b side of the screw portion 7, and the concave portion 16 is stepped, and an inclined surface 16a is formed in the stepped portion. Has been. A projecting portion 11 is formed at the distal end portion 24a of the arm portion 24 so as to project in the height direction of the screw portion. The protrusion 11 is a protrusion having a substantially triangular cross section, and the triangular inclined surface 11 a is inclined with the surface directed in the height direction of the screw portion 7.
The inclined surface 16a of the recess 16 and the inclined surface 11a of the protrusion 11 are parallel inclined surfaces.

  When one split nut portion 3a and the other split nut portion 3b are attached to the bolt shaft portion 20, the protrusion 11 of the other split nut portion 3b faces the screw 11 in the screwing direction A1. 11 is directed in the direction A2 opposite to the screwing direction, and the one split nut portion 3a and the other split nut portion 3b are respectively engaged with the protrusions 11 in the one split nut portion 3a, Each screw portion 7 of the other split nut portion 3 b is brought into contact with the bolt shaft portion 20.

  As a result, as shown in FIG. 11 (b), one split nut portion 3a and the other split nut portion in a state where the inclined surface 11a of each protrusion 11 and the inclined surface 16a of the recess 16 are in contact with each other. Assemble 3b and rotate.

When the nut 1 is being rotated, the inclined surface 11a of each protrusion 11 and the inclined surface 16a of the recess 16 receive the force in the direction of rotation, and the one divided nut portion 3a and the other divided nut portion 3b rotate together. Screw.
Then, as shown in FIG. 11 (b), when the nut 1 is pressed against the fixing portion 22 and is turned so as to tighten the other split nut portion 3 b at a position away from the fixing portion 22, the tip of the protrusion 11 Strongly presses against the bottom surface of the recess 16, and the tip of the protrusion 11 presses against or bites into the bottom surface of the recess 16.

According to the fifth embodiment, one split nut portion 3a and the other split nut portion 3b are inclined between the inclined surface 11a of the protrusion 11 and the recess 16 when the bolt nut portion 20 is mounted and rotated. Since the surface 16a comes into contact with each other by surface contact and rotates integrally, it can be rotated stably and screwed.
Unlike the prior art, parts such as pins and springs are not required, so the number of parts can be reduced and the cost is low.
Since one split nut portion 3a and the other split nut portion 3b have the same shape, the same type can be used for one split nut portion 3a and the other split nut portion 3b.

  As shown in FIG. 11B, when the nut 1 is completely turned and the nut 1 is in pressure contact with the fixed portion 22, one split nut portion 3a and the other split nut portion 3b are screwed to the bolt shaft portion 20. Since the threaded portion of the threaded portion 7 is strongly pressed against the threaded direction A2 in the direction opposite to the screwing direction, the threaded portion 7 is held by the bolt shaft portion 20.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
For example, the nut 1 is not limited to a resin material but may be a metal material.
The outer peripheral shape of the nut 1 is not limited to a square or a hexagon, and may be a circle.
In the third embodiment shown in FIGS. 6 and 7, as shown in FIG. 12 (a), the sandwiching portions 13a, 13b and the sandwiched portion 9 are each formed long, and one split nut portion 3a and When the other split nut portion 3b is assembled, as shown in FIG. 12B, projecting portions 25a and 25b that intersect and project each other may be formed. By opening one split nut portion 3a and the other split nut portion 3b so as to pick up the intersecting protrusions 25a and 25b and return the cross, the state before assembly shown in FIG. it can. That is, the one split nut portion 3a and the other split nut portion 3b can be easily assembled and separated with one touch.
The bolt shaft portion 20 to which the nut 1 is attached is not limited to a long length, and may be a short length. For example, the nut 1 may be attached to the short bolt shaft portion 20 and rotated once or twice for tightening. As a result, the nut 1 can be easily tightened or removed.
In Claims 1 and 2, the concave portion 16 may be formed in a concave shape instead of the through hole 15.

DESCRIPTION OF SYMBOLS 1 Nut 3a One division | segmentation nut part 3b The other division | segmentation nut part 5 Connection part 7 Screw part 9 Clamping part 11 Protrusion part 13a Clamping part 13b Clamping part 16 Recessed part

Claims (5)

A pair of split nut portions that are divided into two along a surface along the screwing direction and a connecting portion that connects the pair of split nut portions to each other at one end in the circumferential direction. Each split nut portion is formed with a female screw. One split nut portion has a clamped portion provided on the outer peripheral side of the screw portion and at the other circumferential end, and the other split nut portion is on the outer peripheral side of the screw portion and the other in the circumferential direction. It has a sandwiching part that is provided at the end and sandwiches the sandwiched part of one split nut part in the screwing direction,
A nut characterized in that a protrusion is formed on at least one facing surface where the sandwiched portion and the sandwiching portion face each other, and a recess into which the protrusion fits is formed on the other facing surface.   The connecting portion includes a sandwiched portion provided on the other split nut portion, and a sandwiching portion provided on the one split nut portion and sandwiching the sandwiched portion in the screwing direction. A protrusion is formed on at least one of the opposing surfaces facing each other, and a recess is formed on the other facing surface to which the protrusion is fitted, and one split nut portion and the other split nut portion are the same. The nut according to claim 1, wherein the nut has a shape.   The nut according to claim 2, wherein the protrusion of each sandwiched portion has a curved surface shape, and each recess is a hole penetrating the sandwiching portion opposed to the protrusion.   The protrusion of each sandwiched portion is a ridge having an inclined surface facing the screwing direction or the opposite direction, and each concave portion has an inclined surface that abuts the inclined surface of the ridge, and the ridge rotates the nut. The nut according to claim 2, wherein the nut is formed long in a direction intersecting the direction, and the inclined surface of the protrusion and the inclined surface of the concave portion are in surface contact.   2. The nut according to claim 1, wherein the pair of split nut portions are made of a resin material and are integrally formed, and the connecting portion is configured such that one split nut portion and the other split nut portion can be bent.

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