JP2012047244A - Nut - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensively manufacturable nut, easy in installation work, performable in a short time, and formable in a small shape.SOLUTION: This nut includes an inner cylinder member for forming an inclined hole having an inner diameter of successively becoming a small diameter dimension and having a flange part in a small diameter end part, at least two or more of guide pieces formed in the axial direction of an inner wall surface of this inner cylinder member, a nut segment having a thread for threadedly engaging with a bolt on the inner wall surface slidably installed in the axial direction without respectively projecting from the flange part between at least the two or more of guide pieces, a polygonal outer cylinder member installed by an installation means for locking by pushing in the inner cylinder member so as to cover an outer peripheral part of a part except for the flange part of the inner cylinder member and having a bolt insertion hole in a rear end part, and a washer having a plate spring installed so as to always press at least two or more of nut segments between the outer cylinder member and the inner cylinder member.

Description

  The present invention relates to a nut that can be positioned in a state where it is pushed into a bolt to a tightening portion and can be tightened and fixed by a slight tightening operation performed at the portion.

Conventionally, this type of nut has a flange fixed to a cylindrical nut body that accommodates a plurality of nut segments by welding or screwing, or a stopper piece that supports a coil spring that biases the nut segment is caulked to the nut body. It was fixed.
For this reason, the assembly work is difficult and expensive, and the nut segment is urged by the coil spring, so a large space for storing the coil spring is required between the stopper piece and the nut segment. There was a drawback of end.

Japanese Patent No. 4201219

  In view of the above-described conventional drawbacks, the present invention aims to provide a nut that is easy to assemble, can be performed in a short time, can be made into a small shape, and can be manufactured at low cost. Yes.

  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-mentioned object, the present invention provides an inner cylinder member having an inclined hole having an inner diameter that gradually becomes a smaller diameter dimension and having a flange portion at the end of the smaller diameter, and an axial direction of the inner wall surface of the inner cylinder member. At least two or more formed guide pieces, and bolts are screwed to inner wall surfaces that are slidably moved in the axial direction without protruding from the flange portion between the at least two guide pieces. A nut segment having a thread and an outer peripheral portion of a portion excluding the flange portion of the inner cylinder member are attached by attachment means for locking by pushing the inner cylinder member, and a bolt insertion hole is formed at the rear end portion. And a washer having a plate spring attached so as to constantly press and press the at least two nut segments between the outer cylinder member and the inner cylinder member. Constitute a nut.

As is clear from the above description, the present invention has the following effects.
(1) According to claim 1, in the state where at least two or more nut segments are inserted into the inner cylinder member and the washer is positioned on the nut segment, the outer cylinder member is inserted so that the inner cylinder member enters the inside. When pushed in, the inner cylinder member and the outer cylinder member can be locked and assembled by the attaching means.
Therefore, the assembling work is easy, can be performed in a short time, and the cost can be reduced.
(2) According to the above (1), since a washer having a leaf spring that always presses the nut segment is used, the mounting operation is easy, and the gap dimension between the nut segment and the outer cylinder member is set small. Therefore, it is possible to reduce the size.
(3) According to the above (1), since the washer having the inner cylinder member and the plate spring formed with the flange portion is used, the number of parts is small, the assembly is easy, and the cost can be reduced.
(4) A second aspect of the present invention can provide the same effects as the above (1) to (3), and can use attachment means that can be easily processed.
(5) Claim 3 can use the washer which can produce the effect similar to said (1)-(3), and can be manufactured cheaply.

The front view of the 1st form for carrying out the present invention. The top view of the 1st form for carrying out the present invention. The bottom view of the 1st form for carrying out the present invention. Sectional drawing which follows the 4-4 line | wire of FIG. Sectional drawing which follows the 5-5 line of FIG. The disassembled perspective view of the 1st form for implementing this invention. Explanatory drawing of the inner cylinder member of the 1st form for implementing this invention. Explanatory drawing of the nut segment of the 1st form for implementing this invention. Explanatory drawing of the washer of the 1st form for implementing this invention. Explanatory drawing of the outer cylinder member of the 1st form for implementing this invention. Explanatory drawing of the state pushed in to the site | part fastened to the volt | bolt of the 1st form for implementing this invention. Explanatory drawing of the state fastened and fixed to the volt | bolt of the 1st form for implementing this invention. The front view of the 2nd form for carrying out the present invention. Sectional drawing which follows the 14-14 line | wire of FIG. The disassembled perspective view of the 2nd form for implementing this invention. The front view of the 3rd form for carrying out the present invention. FIG. 17 is a sectional view taken along line 17-17 in FIG. 16; The disassembled perspective view of the 3rd form for implementing this invention. The top view of the 4th form for carrying out the present invention. Sectional drawing which follows the 20-20 line of FIG. The disassembled perspective view of the 4th 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 FIG. 1 to FIG. 12, 1 is a nut of the present invention which can be pushed and positioned to a portion to be tightened. The inner cylinder member 4 made of a metal having the hole 2 and having the flange portion 3 at the small diameter end, and at least two or more formed in the axial direction of the inner wall surface of the inner cylinder member 4 of the present invention. In the embodiment, the three guide pieces 5, 5, 5 are attached between the three guide pieces 5, 5, 5 so as to be slidable in the axial direction without protruding from the flange portion 3. The inner cylinder member 4 is pushed so as to cover nut segments 8, 8, 8 having screw threads 7 that are screwed onto the inner wall surface of the bolt 6 and the outer peripheral portion of the inner cylinder member 4 excluding the flange portion 3. It is attached with the attachment means 9 to be locked Between the outer cylinder member 11 made of a polygonal metal material or synthetic resin material having a bolt insertion hole 10 at the rear end portion, and between the outer cylinder member 11 and the inner cylinder member 4, And a washer 13 made of a spring material having leaf springs 12, 12, 12 attached so as to constantly press the pressures 8, 8.

  As shown in FIG. 7, the inner cylinder member 4 is formed with an inclined hole 2 having an inner diameter that gradually decreases in size, and the outer wall surface is polygonal, in the embodiment of the present invention a hexagonal inner cylinder member main body 14, A flange portion 3 having a bolt insertion hole 15 having a diameter smaller than the inner diameter dimension of the small diameter end portion, integrally formed with the small diameter end portion of the inner cylinder member main body 14, and the flange portion 3 and the vicinity of the flange portion The inner cylinder member main body 14 is formed of three recessed locking portions 16, 16, 16 that constitute a part of the attachment means 9 formed on the planar portion of the inner cylindrical member main body 14.

  The guide pieces 5, 5, 5 are fixed so that the rear end portions are integrated so that the hexagonal three corner portions of the inner cylinder member body 14 of the inner cylinder member 4 are equidistant. Has been.

  As shown in FIG. 10, the outer cylinder member 11 includes an outer cylinder member body 17 formed in a hexagonal cylinder shape into which the inner cylinder member body 14 of the inner cylinder member 4 can be inserted, and the outer cylinder member. A top plate 18 having a bolt insertion hole 10 integrally formed at a rear end portion of the main body 17; and locking portions 16, 16, 16 of the inner cylinder member 4 formed at a front end portion of the outer cylinder member main body 17; It is comprised by the locking pieces 19, 19, and 19 which comprise a part of the attaching means 9 locked.

  As shown in FIG. 9, the washer 13 includes a ring-shaped washer body 20 located in the inner cylinder member 4 and on the nut segments 8, 8, and 8, and the washer body 20 is substantially V-shaped. It consists of leaf springs 12, 12, 12 formed by notches 21, 21, 21.

  The nut 1 having the above-described configuration is located at the guide pieces 5, 5, and 5 in the inner cylinder member main body 14 of the inner cylinder member 4, and the stopper piece 3 a portion of the flange portion 3 at the lower end of the inclined hole 2. The nut segments 8, 8, 8 are inserted so that the lower ends thereof come into contact with each other, the washer 13 is positioned on the nut segments 8, 8, 8, and the inner cylinder member main body 14 is inserted into the outer cylinder member 11. The assembly is completed by pushing in and locking the locking pieces 19, 19, 19 on the locking portions 16, 16, 16 of the attachment means 9.

  As shown in FIG. 11, the nut 1 is pushed to the tightening portion of the bolt 6 so that the nut segments 8, 8, 8 have a large diameter against the urging force of the plate springs 12, 12, 12 of the washer 13. Then, the nut 1 can be smoothly inserted into the bolt 6.

  When the nut 1 is positioned in the tightening portion in this manner, the nut segments 8, 8, 8 are rotated by a spanner or the like as shown in FIG. 12 so that the nut segments 8, 8, 8 are leaf springs 12, 12, 12 of the washer 13. Therefore, since the screw 6a of the bolt 6 and the threads 7, 7, 7 of the nut segments 8, 8, 8 are screwed together, they can be fastened and fixed.

[Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 13 to 21 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 FIGS. 13 to 15 is mainly different from the first embodiment for carrying out the present invention in that two guide pieces 5 and 5 are formed. At the same time, the inner cylinder member 4A in which one or more screw insertion holes 23 are formed in the flange portion 3A and the nut segments 8A and 8A are inserted between the two guide pieces 5 and 5, respectively. Even with the nut 1A configured using the inner cylinder member 4A and the nut segments 8A, 8A, the same effects as those of the first embodiment for carrying out the present invention can be obtained.

  In the third embodiment for carrying out the present invention shown in FIGS. 16 to 18, the main difference from the first embodiment for carrying out the present invention is that the flange portion 3A of the inner cylinder member 4A is opposed. A plurality of notches 24, 24 are formed in the portion, and a plurality of nail pieces that bite into wood provided with locking pieces 25, 25 that can be attached to and detached from the notches 24, 24, in the embodiment of the present invention. Even with the nut 1 </ b> B configured as described above in that the washer 27 having 26, 26, 26 is attached, the same function and effect as the first embodiment for carrying out the present invention can be obtained.

  The fourth embodiment for carrying out the present invention shown in FIGS. 19 to 21 is mainly different from the first embodiment for carrying out the present invention in that the inner cylindrical member body 14A has a circular outer wall surface. The inner cylinder member 4B in which support pieces 28, 28, 28 are formed on the outer wall surface of the inner cylinder member main body 14A to contact the inner wall surfaces of the corners of the outer cylinder member 11, and the support pieces 28 of the inner cylinder member 4B. 28, 28, the locking portions 16A, 16A, 16A formed on the lower portion of the outer cylindrical member 11 locked with the locking portions 16A, 16A, 16A, and the locking pieces 19A, 19A, 19A. Even with the nut 1 </ b> C configured in this way, the same function and effect as those of the first embodiment for carrying out the present invention can be obtained.

  The present invention is used in an industry for manufacturing a nut that can be screwed and fixed after being pushed into a tightening position.

1, 1A, 1B, 1C: nut, 2: inclined hole,
3, 3A: Flange part 4, 4A, 4B: Inner cylinder member,
5: Guide piece, 6: Bolt,
7: Thread, 8, 8A: Nut segment,
9, 9A: mounting means, 10: bolt insertion hole,
11: outer cylinder member, 12: leaf spring,
13: Washer 14, 14A: Inner cylinder member main body,
15: bolt insertion hole, 16, 16A: locking portion,
17: outer cylinder member main body, 18: top plate,
19, 19A: locking piece, 20: washer body,
21: Notch, 23: Screw insertion hole,
24: Notch, 25: Locking piece,
26: nails, 27: washers,
28: Support piece.

Claims (3)

An inner cylinder member having an inner diameter that is formed with an inclined hole whose inner diameter sequentially becomes a smaller diameter diameter and having a flange portion at the end of the smaller diameter, and at least two guide pieces formed in the axial direction of the inner wall surface of the inner cylinder member; A nut segment having a thread threadedly engaged with a bolt on an inner wall surface slidably mounted in an axial direction without projecting from the flange portion between the at least two guide pieces, and the inner cylinder A polygonal outer cylinder member having a bolt insertion hole at the rear end, which is attached by an attaching means for locking by pushing the inner cylinder member so as to cover the outer peripheral portion of the part excluding the flange portion of the member, A nut comprising: a washer having a plate spring attached so as to always press and press the at least two nut segments between an outer cylinder member and the inner cylinder member. The attachment means is composed of a plurality of locking pieces formed at the distal end portion of the outer cylinder member, and a locking portion formed in the vicinity of the flange portion of the inner cylinder member that is locked with the plurality of locking pieces, respectively. 2. The nut according to claim 1, wherein the nut is provided. 2. The nut according to claim 1, wherein the washer has a plate spring formed by a notch.

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