JP2008202774A - Externally insertable nut - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an externally insertable nut capable of fastening a base material panel to a member with a bolt and nut with single-side work and easily demountable. <P>SOLUTION: When a flange 1 and a foot portion 3 are pressed to be parallel to each other, the flange 1 whose upper hinge 8 and lower hinge 9 are perpendicularly bent in opposite directions are deformed to be parallel to a nut body 10 the foot portion 3 which can be inserted through a lower hole of the panel. Fastening is completed by fastening the bolt thereinto. Demounting is possible with operation opposite to mounting operation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a nut for fastening a member to a base material panel in which a pilot hole is drilled in one side operation.

  Conventionally, there is a caulking fastener rivet as a general method for fastening a member to a base material panel having a prepared hole in one side operation.

  Once the rivet is fastened, it cannot be removed without cutting it.

  Moreover, when a rivet is used with a resin panel, the resin panel may break.

  In order to solve such a problem, an object of the present invention is to provide a nut that can be fastened with a bolt and a nut in one side operation and can be easily removed.

  In order to achieve the above object, the present invention is configured such that the nut is made of a metal plate, the vertical size of the nut is smaller than the panel lower hole diameter to be inserted, and the horizontal size is larger than the panel lower hole diameter. Therefore, after inserting the nut through the panel lower hole and rotating approximately 90 degrees on the back side, it becomes an anchor and cannot be removed. And in order to tighten a volt | bolt, it has the internal thread penetrated in the approximate center part of a nut.

  As a second problem solving means, as a means for fixing the nut to the back side without dropping after inserting the nut from the panel lower hole, the nut is provided with square holes that penetrate substantially square on the left and right sides of the female screw, and this is provided with a flanged elastic body. By fitting the foot part, only the flange is left on the front side, and the nut is fixed without falling to the back side.

  The operation of the above configuration will be described. When the orthogonal flange and the foot are pressed so as to be parallel to each other, the four hinge portions provided at the foot are bent and deformed as shown in FIG.

  After the insertion, if the flange is brought into close contact with the panel lower hole, it is deformed again as shown in FIG.

  When the bolt is inserted as shown in FIG. 8, the bolt is sandwiched between the bolt inner guide 4 and the bolt outer guide 5 provided on the foot, guided to the center of the female screw 12, and the bolt and the female screw 12 are moved without being displaced.

  When the bolt is tightened, the female screw 12 is engaged, and the nut main body 10 moves in the direction of the flange along the foot 3 and can be fastened as shown in FIG. Moreover, it is possible to remove in the reverse order of fastening.

  As described above, the outside nut according to the present invention is inaccessible, but the nut can be inserted from the front side to the back side to enable bolting and can be removed.

  In addition, the flange made of an elastic body exhibits a waterproof effect.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  In FIG. 1, the flange 1 has a diameter that does not penetrate through the panel prepared hole to be fastened. The bolt insertion hole 2 is a bolt male screw insertion hole used. The foot 3 has a shape that does not interfere with other parts when bent. The bolt inner guide 4 and the bolt outer guide 5 are guides that hold the bolt from four directions so that the bolt can be inserted vertically. The nut holding portion 6 in FIG. 2 is substantially the same size as the square hole 11 in FIG. In FIG. 2, the nut fixing portion 7 serves as a hook that does not easily come off when penetrating from the square hole 11. The upper and lower hinges 8 and 9 are thinner than the foot 3 so that they can be easily bent 90 degrees in opposite directions. Reference numerals 1 to 9 denote integral elastic bodies.

  In FIG. 1, the nut body 10 has a substantially plate shape. As described above, the square hole 11 is confused with the elastic body. The female screw 12 is turned into a bolt male screw, and the nut head portion 13 has a rounded shape so that it can be easily taken in and out of the panel lower hole. The slip prevention protrusion 14 prevents the panel from being stuck in the panel lower hole after fastening. 10 to 14 are made of an integral metal plate nut.

  If the nut fixing portion 7 of the elastic body configured as described above is press-fitted into the square hole 11, the nut fixing portion 7 is caught in the square hole 11 and cannot be easily removed.

  A combination of an elastic body and a metal plate-like nut with the above-described configuration is the outer insertion nut of the present invention.

  Hereinafter, the installation operation of the above configuration will be described. In FIG. 1, when the flange 1 and the foot 3 are picked up with fingers, the upper and lower hinges 8 and 9 are bent into the shape shown in FIG. When the member 15 to be fastened and the base plate 16 are inserted into the prepared holes, only the flange 1 is left on the front side and can be inserted on the back side.

  When a portion other than the flange 1 enters the back side and the flange 1 is deformed into a shape in close contact with the lower hole of the base material panel 16, it is mounted as shown in FIG. 7.

  When the bolt 17 is inserted from the bolt insertion hole 2 as shown in FIG. 8, the male screw of the bolt 17 sandwiched between the bolt inner guide 4 and the bolt outer guide 5 from the four directions is inserted into the female screw 12 without deviation.

  When the bolt 17 is tightened so that it is slightly pushed, the female screw 12 is engaged, and the square hole 11 is detached from the nut holding portion 6 as shown in FIG. 9, and further passes through the bolt inner guide 4 and the bolt outer guide 5 to form the base material. Close contact with panel 16 is completed.

  By the above-described installation operation, it becomes possible to fasten the member by one-side work from the front side to those that do not have a hand on the back side.

  And it can remove by the operation | movement opposite to the said installation operation | movement.

  Further, since the flange 1 is an elastic body, a waterproof effect can be obtained.

  Since it can be removed, it can be easily repaired or reused.

  In addition, fastening of plastic boxes that cannot be handled is usually done with an adhesive that cannot be disassembled because rivets often break when fastened, but it does not place a burden on the base material. The outside nut according to the present invention that can be effectively fastened and removed is very useful in industry.

Overall view of the outside nut of the present invention Single figure of elastic body of externally inserted nut of the present invention Single figure of metal nut for outside nut of the present invention Single figure of metal nut for outside nut of the present invention Side view of the outer nut of the present invention Outside hole insertion deformation diagram of the outer insertion nut of the present invention Completion of insertion of externally inserted nut according to the present invention Form of bolting of externally inserted nut of the present invention Fastening form diagram of outside nut according to the present invention

Explanation of symbols

1. Flange 2. 2. Bolt insertion hole Foot 4 4. Bolt inner guide 5. Bolt outer guide 6. Nut holding part Nut fixing part 8. Upper hingle9. Lower helix 10. Nut body 11. Square hole 12. Female screw 13. Nut head 14. Slip prevention protrusion 15. Member 16. Base material panel 17. bolt

Claims (3)

  An elastic body composed of a rectangular plate with a square hole penetrating substantially square on the left and right sides of the female screw provided at the center, and consisting of a flange and two legs extending vertically from the square hole. The outer nut is characterized in that the metal plate-like nut is freely moved along the foot of the elastic body.   When the elastic body foot part, the upper part and the lower part are provided in four places, and the flange part and the metal plate-like nut and the foot part are bent in parallel, the upper part and the lower part are respectively It is an external nut characterized in that it is bent in the opposite direction and is shaped so that a metal plate-like nut and an elastic leg can be inserted into the panel lower hole.   An external nut characterized in that guides are provided on both sides of the elastic body foot so that the bolt can be inserted into the female screw of the metal plate nut without slipping.

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