JP2013064415A - Nut and fastening member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nut and a fastening member that are easily manufactured, decreased in the volume for a transporting package, dispensing with the work of rotatably attaching without causing detachment of the nut and a washer, and can be manufactured and transported at low cost.SOLUTION: The nut comprises: a nut body with a polygonal or circular outer circumferential wall, housing at least two pieces of nut segments which are screwed to the screw part of a bolt when rotated in the screwing direction after the bolt is inserted, and a nut segment urging spring urging the nut segments in the screwing direction; and a ring-like engaging groove turnable with an engaging piece formed to the washer that can be fixed to an attachment member formed on the outer circumferential part of the bolt insertion side of the nut body that can rotate a locking metal detachably engageable or lockable to an attaching member, and detachably engaging.

Description

  The present invention relates to a nut including a nut segment that is screwed with a threaded portion of a bolt by rotating the bolt after inserting the bolt, and a fastening member that includes a washer and a locking metal fitting that engage with the nut.

Conventionally, this type of nut or tightening member has been attached to a nut member provided with a nut segment without being detached and capable of rotating.
The tightening member configured in this manner has a drawback in that since the washer is attached to the nut, the volume of the packaging is large and transportation is expensive.

  Further, since the nut is mounted rotatably without removing the washer, there is a disadvantage that the assembling work is troublesome and the cost is increased.

Japanese Patent No. 4531585 Japanese Patent No. 4201219

  In view of the above-mentioned conventional drawbacks, the present invention is easy to manufacture, can reduce the volume of transport packaging, and does not need to be mounted rotatably without removing nuts and washers, and can be manufactured at low cost. It is an object to provide a nut and a fastening member that can be transported.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

  In order to achieve the above object, the present invention provides at least two nut segments that are screwed with a threaded portion of an inserted bolt when the bolt is rotated in the screwing direction after the bolt is inserted, and the nut segment is screwed in the screwing direction. The outer peripheral wall in which the nut segment urging spring for urging is housed is formed on a nut body having a polygonal shape or a round shape, and a washer that can be fixed to a mounting member formed on the outer peripheral portion of the bolt body on the bolt insertion side. A locking bracket that can rotate with the engagement piece and can be detachably engaged or locked to the mounting member can be rotated and can be rotated with a ring-shaped engagement groove that can be detachably engaged with the nut. It is composed.

  Further, the present invention provides at least two nut segments that are screwed with a screw portion of an inserted bolt when the bolt is rotated in the screwing direction after the bolt is inserted, and a nut segment that biases the nut segment in the screwing direction. Nut body with outer peripheral wall that houses the urging spring is polygonal or round, and can be rotated with a locking piece formed on a washer that can be fixed to the mounting member formed on the outer periphery of the bolt body on the bolt insertion side And a nut comprising a ring-shaped locking groove that can be rotated and detachably engaged with a locking metal fitting that can be detachably engaged or locked to a mounting member, and locking of the nut A tightening member is constituted by a washer or a locking metal fitting having a locking piece that can rotate and detachably engage with the groove.

As is clear from the above description, the present invention has the following effects.
(1) According to the first aspect, since it is only necessary to form a ring-shaped engagement groove on the outer peripheral portion on the insertion side of the bolt of the nut main body, it is easy to process and can be manufactured at low cost.
(2) According to (1) above, by engaging a washer or locking metal fitting having a ring-shaped engagement groove and a rotatable and detachable engagement piece, a bolt is inserted to a necessary part, By rotating the nut body in the screwing direction, the work of tightening and fixing in a short time can be performed.
(3) According to (1) above, the packing can be made small, so that the packing cost and the transportation cost can be reduced.
(4) According to the above (1), since a washer or locking bracket having a nut main body and an engaging piece is attached and used at the time of use, there is no need to attach the nut main body, the washer or the locking bracket at the time of manufacturing. Is easy and can be manufactured at low cost.
(5) In the second aspect, the same effects as in the above (1) to (4) can be obtained.

The top view of the use condition of the 1st form for implementing this invention. The front view of the use condition of the 1st form for carrying out the present invention. The top view of the nut of the 1st form for carrying out the present invention. The front view of the nut of the 1st form for carrying out the present invention. The bottom view of the nut of the 1st form for carrying out the present invention. The partially broken decomposition explanatory view of the nut of the 1st form for carrying out the present invention. The top view of the washer of the 1st form for carrying out the present invention. The front view of the washer of the 1st form for carrying out the present invention. The top view of the 1st form for carrying out the present invention. The front view of the 1st form for carrying out the present invention. The top view of the use condition of the 2nd form for implementing this invention. Explanatory drawing of the 2nd form for implementing this invention. Explanatory drawing of the washer of the 2nd form for implementing this invention. The top view of the use condition of the 3rd form for implementing this invention. Explanatory drawing of the 3rd form for implementing this invention. Explanatory drawing of the washer of the 3rd form for implementing this invention. The top view of the use condition of the 4th form for implementing this invention. Explanatory drawing of the 4th form for implementing this invention. Explanatory drawing of the washer of the 4th form for implementing this invention. The top view of the use condition of the 5th form for implementing this invention. The front view of the use condition of the 5th form for implementing this invention. Explanatory drawing of the 5th form for implementing this invention. Explanatory drawing of the latch metal fitting of the 5th form for implementing this invention. The top view of the use condition of the 6th form for implementing this invention. Explanatory drawing of the 6th form for implementing this invention. Explanatory drawing of the latch metal fitting of the 6th form for implementing this invention. The top view of the use condition of the 7th form for implementing this invention. Explanatory drawing of the 7th form for implementing this invention. Explanatory drawing of the washer of the 7th form for implementing this invention.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

  In the first embodiment for carrying out the present invention shown in FIGS. 1 to 10, reference numeral 1 denotes a fastening member of the present invention. This fastening member 1 is inserted when it is rotated in the screwing direction after the bolt 2 is inserted. The nut 4 is engaged with the threaded portion 3 of the bolt 2, and the washer 7 is fixed to the mounting member 5 that is rotatable and detachably engages with the nut 4 with screws 6 and 6.

  As shown in FIGS. 3 to 6, the nut 4 has a polygonal or round outer peripheral wall, a hexagonal shape in the embodiment of the present invention, and an inner wall on the bolt insertion side is formed in an inclined hole 8 having a sequentially smaller inner diameter. Nut case 9, at least two or more formed in the axial direction of the inner wall 9a of the nut case 9, three guide pieces 10, 10, 10 at equal intervals in the embodiment of the present invention, these guides Threads 11, 11, 11 are formed on the inner wall 9 a between the pieces 10, 10, 10 to be screwed with the threaded portion 3 of the bolt 2, and are attached so as to be slidable in the axial direction of the nut case 9. Nut segments 12, 12, 12, a biasing spring 13 that biases the three nut segments 12, 12, 12 toward the small inner diameter of the nut case 9, and the biasing spring 13 is the nut A nut body 16 composed of a washer-shaped slip-off preventing piece 15 having a bolt insertion hole 14 that is caulked and fixed on the side opposite to the bolt insertion side of the nut case 9 and holds the state accommodated in the nut case 9; The nut body 16 includes a ring-shaped engagement groove 17 formed on the outer peripheral portion of the nut case 9 on the bolt insertion side.

  As shown in FIGS. 7 and 8, the washer 7 includes a washer body 19 in which a bolt insertion hole 18 is formed, and a pair of screw insertion holes 20 formed in a portion near the opposing outer peripheral portion of the washer body 19. 20 and an engagement engaging with a ring-shaped engagement groove 17 of the nut 4 formed on the upper surface of the washer body 19 between the pair of screw insertion holes 20 and 20 so as to be rotatable and detachable. It consists of pieces 21 and 21.

  The tightening member 1 having the above configuration is in a state of being transported in a small package in which the nut 4 and the washer 7 are separated until the site where they are used.

  9 and 10, the wood 5 as an attachment member for a column or girder to be connected by engaging the engagement pieces 21 and 21 of the washer 7 with the ring-shaped engagement groove 17 of the nut 4 at the site of use. The bolt 2 is inserted into the bolt insertion holes 22, 22 formed through the washer 23, and the tip of the bolt 2 protruding from the bolt insertion hole 22 is inserted into the bolt insertion hole 9 b of the nut 4 to which the washer 7 is attached. Push into.

  At this time, the three nut segments 12, 12, 12 of the nut 4 are pressed in the expanding direction by the screw portion 3 of the bolt 2, and the bolt 2 is smoothly inserted.

  When the washer 7 comes into contact with the wood 5 as an attachment member, the screws 6 and 6 are screwed to the wood 5 through the screw insertion holes 20 and 20 of the washer 7, and the washer 7 is fixed to the wood 5. By rotating in the tightening direction, the threaded portion 3 of the bolt 2 and the threads 11, 11, 11 of the nut segments 12, 12, 12 are screwed together, and the woods 5, 5 can be tightened and fixed. .

  When the wood 5 or 5 contracts due to drying or the like during use, the washer 7 screwed to the wood 5 moves together with the wood 5 and the nut body 16 also moves in the same direction. The nut segments 12, 12, 12 that are biased at 13 also move in the same direction, and can be kept in a tightened and fixed state.

[Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 11 to 29 will be described. In the description of the different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention are denoted by the same reference numerals, and redundant description is omitted.

  The second embodiment for carrying out the present invention shown in FIG. 11 to FIG. 13 is mainly different from the first embodiment for carrying out the present invention in that a bolt insertion hole 18 and an engagement piece 21 are provided on the upper surface. , 21 formed on the upper washer 24, a bolt insertion hole 18 fixed to the lower surface of the upper washer 24 by adhesion or welding, and a mounting member integrally formed so that the front end protrudes downward on the outer periphery. 5 is a fastening member 1A using such a washer 7A in that the washer 7A is composed of a lower washer 26 made up of a plurality of latching claws 25 that are difficult to lock. The same effects as those of the first embodiment for implementation can be obtained.

  The third embodiment for carrying out the present invention shown in FIGS. 14 to 16 is mainly different from the second embodiment for carrying out the present invention in that a bolt insertion hole 18 is engaged with a washer body 19 and an engagement. In this respect, the use of a washer 7B formed with a plurality of locking claws 25 that are inserted into and locked to the pieces 21 and 21 and the outer peripheral portion so that the tip portion is integrally formed so as to protrude downward. Even with the tightening member 1B configured using the washer 7B, the same effect as the second embodiment for carrying out the present invention can be obtained.

  The fourth embodiment for carrying out the present invention shown in FIGS. 17 to 19 is mainly different from the first embodiment for carrying out the present invention in that the bolt insertion hole 18 on the upper surface of the washer body 19 is formed. A semicircular arc-shaped concave portion 27 is formed in the outer peripheral portion, and a connecting piece 28 of the semicircular arc-shaped engaging piece 21A is inserted into the concave portion 27, and the connecting piece 28 and the washer body 19 are fixed by spot welding or the like. In the point using the washer 7C, the same effect as the first embodiment for carrying out the present invention can be obtained even with the fastening member 1C configured using such a washer 7C.

  The fifth embodiment for carrying out the present invention shown in FIGS. 20 to 23 differs from the first embodiment for carrying out the present invention mainly in the ring-shaped engagement groove 17 of the nut 4. The wound engaging portion 29 that can be expanded and engaged by pressing and the both ends of the engaging portion 29 protrude from the both ends of the engaging portion 29 and are fixed to the lower position of the pillar 30 and are embedded in the foundation 36 and the base 35 is fixed. Such a lock is provided in that a lock fitting 34 provided with lock pieces 33, 33 that can be locked to an anchor bolt insertion cylinder 32 of a hole-down hardware 31 as a mounting member to be locked with the penetrating anchor bolt 2 is used. Even if it is the fastening member 1D using the metal fitting 34, the effect similar to the 1st form for implementing the said this invention is acquired.

  The sixth embodiment for carrying out the present invention shown in FIGS. 24 to 26 is mainly different from the fifth embodiment for carrying out the present invention in that it is engaged with an engagement portion 29A having an E-ring shape. Even in the tightening member 1E using such a locking bracket 34A, the same as in the fifth embodiment for carrying out the present invention, in that the locking bracket 34A to which the pieces 33, 33 are fixed is used. The operational effect is obtained, and the attachment of the nut 4 and the locking bracket 34A can be easily performed by pushing the engaging portion 29A into the ring-shaped engaging groove 17.

  The seventh embodiment for carrying out the present invention shown in FIGS. 27 to 29 is mainly different from the second embodiment for carrying out the present invention in that a bolt insertion hole 18 and an engagement piece insertion hole 37 are provided. , 37 formed on the lower washer, and engaging pieces 21A and 21A projecting upward from the engaging piece insertion holes 37 and 37 of the upper washer 24A on the lower surface of the upper washer 24A, the bolt insertion hole 18 and the outer peripheral portion Since the washer 7D is composed of the lower washer 26A in which a plurality of locking claws 25, 25 are formed, the tightening member 1F constructed using such a washer 7D also implements the present invention. Therefore, the same effect as the second embodiment can be obtained.

  In the embodiment of the present invention, the nut case 9 having a polygonal outer peripheral wall has been described so that a spanner can be used. However, the present invention is not limited to this, and the outer peripheral wall is round when used by hand. It may be the one.

  The present invention is used in an industry for manufacturing a nut and a fastening member that can be screwed into a screw thread of a bolt by inserting and then rotating the bolt.

1, 1A, 1B, 1C, 1D, 1E: tightening member,
2: Bolt, 3: Threaded part,
4: Nut, 5: Mounting member,
6: Screw, 7, 7A, 7B, 7C: Washer,
8: inclined hole, 9: nut case,
10: Guide piece, 11: Screw thread,
12: Nut segment, 13: Biasing spring,
14: bolt insertion hole, 15: slip-off prevention piece,
16: nut body, 17: ring-shaped engagement groove,
18: Bolt insertion hole, 19: Washer body,
20: Screw insertion hole 21, 21A: Engagement piece,
22: Bolt insertion hole, 23: Washer,
24: upper washer, 25: locking claw,
26: Lower washer, 27: Recess,
28: Connection piece 29, 29A: Engagement part,
30: Pillar, 31: Hole down hardware,
32: Anchor bolt insertion cylinder, 33: Locking piece,
34, 34A: Locking metal fittings.

Claims (2)

After inserting the bolt, when it is rotated in the screwing direction, at least two or more nut segments that are screwed with the screw portion of the inserted bolt and a nut segment biasing spring that biases the nut segment in the screwing direction are stored. A nut body having a polygonal or round outer peripheral wall, and an engaging piece formed on a washer that can be fixed to a mounting member formed on an outer peripheral portion of the nut body on the bolt insertion side, and is rotatable and detachable A nut comprising: a ring-shaped engagement groove that can be engaged and removably engaged with a locking metal fitting that can be engaged or locked to a mounting member. After inserting the bolt, when it is rotated in the screwing direction, at least two or more nut segments that are screwed with the screw portion of the inserted bolt and a nut segment biasing spring that biases the nut segment in the screwing direction are stored. The outer peripheral wall is a polygonal or round nut body, and can be rotated with a locking piece formed on a washer that can be fixed to a mounting member formed on the outer periphery of the nut body on the bolt insertion side. A locking metal fitting that can be engaged with or locked to a mounting member can be rotated and a nut comprising a ring-shaped locking groove that can be detachably engaged, and the locking groove of the nut can be rotated. And a fastening member comprising a washer or a locking fitting having a locking piece that is detachably engaged.

Images