JP4898291B2 - Clip nut - Google Patents

Description

  The present invention relates to a clip nut used as a set with a bolt to fasten two works (in the following description, they may be properly used as a first work and a second work) in a stacked state. .

  The clip nut is composed of a clip body formed by bending a metal plate into a substantially U shape or U shape, and a nut attached to the clip body so as not to fall off. The clip body resists its elasticity. It can be attached to the first workpiece by one-touch operation.

  In general, the nut is often fixed to the clip body by welding (for example, Patent Documents 1 to 4). However, in Patent Document 5, the nut is provided with a stepped portion, and a portion that overlaps the stepped portion of the nut. It is disclosed that the clip body is provided with a holding cylinder portion that includes the nut and surrounds the entire outer periphery of the nut.

Further, in order to prevent the clip nut from falling off from the first workpiece before the fastening operation is started and to position the nut, it is considered that the clip nut is provided with a retaining means that fits into the bolt insertion hole of the first workpiece. It has been. As an example, Patent Documents 1 and 2 disclose that a projecting piece / locking guide portion is provided on a sandwiching plate to which a nut is not attached among two sandwiching plates constituting a clip body. 3 discloses that a positioning cylinder portion is formed on a clamping plate to which a nut is attached. Further, Patent Document 5 discloses that a positioning cylinder portion is formed on a nut.
Japanese Utility Model Publication No. 63-115910 Japanese Patent Laid-Open No. 9-229044 JP 2002-276638 A Japanese Patent Laying-Open No. 2005-308078 Japanese Patent Laid-Open No. 2003-120639

  When welding the nut to the clip body, there is a problem that warpage occurs and a gap is left between the seat surface of the nut and the clip body, or the coating or plating of the clip body is peeled off by the heat of welding. there were. In addition, since the relative positional relationship between the clip body and the nut cannot be changed, the bolt insertion hole of the workpiece and the nut may be misaligned and may not be used.

  On the other hand, the configuration of Patent Document 5 has a problem that the processing cost increases because the nut has a very special shape with a step.

  This invention makes it a subject to improve such a present condition.

Clip nuts of the present invention consists an elastic plate made of a clip member for clamping the word over click, the non-circular nut having at least one pair of parallel sides. The clip body includes a front holding plate that overlaps one surface of the work, a back holding plate that overlaps the other surface of the work, and a connection portion that connects the front holding plate and the back holding plate at one end thereof. The back clamping plate has a bolt insertion long hole extending long along a line connecting the free end of the back clamping plate and the connecting portion, and the reverse side of the back clamping plate is opposite to the front clamping plate. The nut is arranged on the surface so that the bolt inserted into the bolt insertion elongated hole can be screwed.

And the annular projection part which penetrates into the bolt insertion long hole of the back clamping plate is integrally formed on the part of the nut that overlaps the back clamping plate and around the female screw hole, and the annular projection part is The nut is held from the bolt insertion long hole so as not to fall off by forming an annular groove having a larger diameter than the groove width of the bolt insertion long hole and fitting the inner peripheral edge of the bolt insertion long hole into the annular protrusion. And by making the length in the longitudinal direction of the bolt insertion elongated hole larger than the inner diameter of the annular groove in the annular projection, the nut can be slid in the longitudinal direction of the bolt insertion elongated hole. Further, the annular projecting portion of the nut is circular, and protrudes from the back holding plate to the opposite side of the front holding plate from the back holding plate of the clip body and contacts a pair of parallel side surfaces of the nut. were Turkey A pair of posture holding pieces for holding against rotation the nut is formed by.

According to a second aspect of the present invention, in the first aspect of the present invention, in the front clamping plate of the clip body, the retaining piece portion that enters the bolt insertion long hole formed in the work is formed in a state that does not interfere with the bolt.

According to a third aspect of the present invention, in the first or second aspect, the bolt insertion elongated hole of the back clamping plate in the clip body is formed with a large-diameter portion large enough to fit the annular protrusion of the nut and the outer diameter of the annular protrusion 7. Furthermore, it is formed in a Dalma-shaped hole having a small-diameter portion having a small diameter and a width capable of fitting an annular groove.

In the present invention, the nut is attached to the clip body is allowed Awa fit such as crimping, for not than being fixed by welding, problems and the space becomes available between the clip body and the nut, painting or plating The problem of peeling off does not occur. Further, for example, while a good UNA simple method of mounting allowed Awa fitting such as caulking, the nut is held unrotatable by the attitude holding piece provided on the clip body, thus, to interfere with the threaded bolts Not at all.

  According to the second aspect of the present invention, the clip nut is held in a state where it cannot be easily detached from the work due to the presence of the retaining portion. In this case, the retaining portion can be formed in an annular shape, but if it is provided in a claw-like form at the end of the back clamping plate that is close to the connecting portion, the position of the nut is somewhat Even if it is displaced, it can be said that it is particularly suitable because the bolt can be screwed into the nut without interfering with the retaining portion.

In this invention, since the position of a nut can be changed because the bolt insertion hole is a long hole, even if there is a machining error in the bolt insertion hole of the workpiece, there is an advantage that the error can be absorbed.

Also, since they are fitted with annular projections formed in the nut on the back holding plate of the clip member, the clip nut may be a 2 part of the clip body and the nut, it can therefore be a simple structure . Furthermore, since the annular protrusion formed on the nut can be fitted into the bolt insertion long hole of the workpiece to perform the positioning function, in other words, the annular protrusion can function as a stopper. there is an advantage that can be held in a state that does not come off as easily from the workpiece without providing (more preferably when used with retaining portion.).
In the invention of claim 3, the nut is forced to slide into the small diameter portion of the bolt insertion long hole against the elasticity of the posture holding piece after the annular protrusion is fitted into the large diameter portion of the bolt insertion hole length. Is attached to the back clamping plate. Therefore, a caulking process is not necessary.

  Next, an embodiment of the present invention will be described with reference to the drawings.

(1). First Embodiment FIGS. 1 to 4 show a first embodiment, and the configuration of the clip body is shown in FIG. 1A is a plan view, FIG. 1B is a front view, FIG. 1C is a right side view, FIG. 1D is a bottom view, FIG. 1E is a cross-sectional view taken along line EE in FIG. ) Is a sectional view taken along line FF in FIG.

The clip nut includes a clip body 1 made of an elastic metal plate and a hexagonal nut 2 attached to the clip body 1. The clip body 1 includes a front sandwiching plate 3, a back sandwiching plate 4 , and a connecting portion 5 that connects the front and back sandwiching plates 3 and 4 at one end thereof , and is formed in a substantially U shape . The nut 2 is arranged on the surface of the back clamping plate 4 opposite to the front clamping plate 3. As a material of the clip body 1, for example, spring steel, a steel plate, a stainless steel plate, or the like can be adopted . The back clamping plate 4 has a long strip shape in a direction away from the connection portion 5.

The back clamping plate 4 has a bolt insertion elongated hole 6. The bolt insertion long hole 6 is a long hole extending in a direction along the line connecting the base (connecting portion 5) of the back clamping plate 4 and the free end (longitudinal direction of the back clamping plate 4). Then, around the portion at and internal thread hole which overlaps with Urakyo holding plates 4 of the nut 2, to form a ring Jo突 electromotive unit 7 to obtain fits into the bolt insertion long hole 6, the the annular projection 7 is caulked An annular groove 8 is formed on the outer periphery, and the nut 2 is attached to the back holding plate 4 so as not to fall off by fitting the inner peripheral edge of the back holding plate 4 into the annular groove 8. Therefore, the outer diameter of the annular protrusion 7 after caulking is larger than the groove width of the bolt insertion long hole 6. The length of the bolt insertion long hole 6 in the longitudinal direction is larger than the inner diameter of the annular groove 8.

In the present invention , the annular protrusion 7 is caulked so that the nut 2 can slide, and the back holding plate 4 is bent with a posture holding piece 9 that is in close contact with or in close contact with two parallel side surfaces of the nut 2. Forming. For this reason, the nut 2 can be freely slid along the longitudinal direction of the bolt insertion long hole 6 and is held non-rotatable.

  The front clamping plate 3 is set to a length that does not interfere with the bolt 10 screwed into the nut 2, and has a narrow and claw-like oval projecting toward the back clamping plate 4 at its tip (free end). The stopper 11 is formed by bending. Further, the front clamping plate 3 and the back clamping plate 4 are formed in a non-parallel manner so that the distance is narrowed toward the tip.

  2 and 3 show examples of using the clip nut 2. In this example, it is used to attach a wall material 13 to a beam member (trunk edge) 12 made of H-shaped steel constituting a building such as a prefab house, and the wall member 13 has an L-shaped bracket material (angle). Material) 14 is fixed by screws or the like, and bolt insertion holes 15 and 16 are provided in the beam material 12 and the bracket material 14, respectively.

  Needless to say, when the bracket member 14 is fastened to the beam member 12, the clip member 1 is attached to the beam member 12 by fitting from the outside, and then the bracket member 14 of the wall member 13 is overlaid on the beam member 12. Then, the procedure of screwing the bolt 10 into the nut 2 may be performed.

And since the retaining part 11 of the front clamping plate 3 is fitted in the bolt insertion hole 15 of the beam member 12, the clip body 1 does not fall off or be displaced from the beam member 12 before fastening. In addition, when the bolt insertion hole 15 is processed in the beam member 12, even if there is a slight processing error in the distance from the edge, the error can be absorbed by sliding the nut 2. If the annular protrusion 7 of the nut 2 is fitted in the bolt insertion hole 15, it can be positioned by the annular protrusion 7, and the nut 2 overlaps the beam member 12 in a wide area (the annular protrusion 7 is preferable). There may be a state where the bolt is not fitted in the bolt insertion hole 15 of the beam member 12, but there is no particular hindrance to the fastening function.

  In the present embodiment, the front clamping plate 3 of the clip body 1 overlaps the bracket member 14 and the beam member 12 only on the wall member 13 side with the bolts 10 interposed therebetween, but the clip body 1 is thin. Therefore, there is no problem that the fastening force decreases. In addition, the clip body 1 is attached to the beam member 12 by elastically deforming so as to widen the gap between the both sandwiching plates 3 and 4, but the elastic restoring force does not always have to work when attached to the beam member 12. .

  If the distance between the front and rear clamping plates 3 and 4 is narrowed toward the end as in the present embodiment, there is an advantage that it is possible to cope with workpieces having different thicknesses. In FIG. 4, the state attached to the beam material 12 thinner than the space | interval dimension of the base part of both the clamping plates 3 and 4 is shown.

(2). Second Embodiment FIG. 5 shows a second embodiment which is a modification of the first embodiment. In this embodiment, the front clamping plate 3 is set to the same length as the back clamping plate 4, and the bolt insertion holes 18 are formed in the front clamping plate 3. In order to guide the fitting at the tip, inclined portions 3a and 4a are formed which are spaced apart from each other. In this embodiment, the retaining portion 11 is formed on the inner peripheral edge of the bolt insertion hole 18.

  In this way, when the bolt insertion hole 18 is also formed in the front clamping plate 3, the retaining portion 11 can be formed in a cylindrical shape or can be formed in a jumping manner along the inner peripheral edge of the bolt insertion hole 18. However, it can be said that it is sufficient to form only the inner peripheral edge close to the connecting portion 5 in a claw-like state.

(3) Reference Example FIG. 6 shows a reference example . (A) is a plan view, (B) is a front view, (C) is a bottom view, and (D) is a partially enlarged sectional view.

In this reference example , the clip body 1 has a shape that is substantially the same as that of the first embodiment, while the nut 2 uses a normal hexagonal nut 2 having no protrusion. As a means for preventing the nut 2 from falling off, a holder 19 made of a metal plate that surrounds the nut 2 from the side opposite to the back clamping plate 4 is separately manufactured, and the blade portion 19a provided on the holder 19 is used as the back clamping plate 4. The cylindrical portion (burring portion) 20 formed on the back clamping plate 4 is caulked. The bolt insertion hole 19b of the holder part 19 is a long hole.

The front clamping plate 3 has a watermark hole 21 into which a pressing jig is fitted during caulking. In this reference example , the posture holding piece 9 also serves as a drop-off preventing means. The posture holding piece 9 can also be formed on the holder portion 19. Further, the holder part 19 can be formed integrally with the back clamping plate 4.

In this reference example , most of the front clamping plate 3 from the base extends in a state parallel to the back clamping plate 4, and the tip end side is inclined to form a retaining portion 11 at the forefront thereof. Needless to say, when a workpiece such as the bracket member 14 is stacked, the front holding plate 3 extends flat and deforms.

(4). Third Embodiment FIG. 7 shows a third embodiment. (A) is a partially broken plan view, (B) is a partial cross-sectional view taken along line BB of (A), and (C) is a partial plan view.

In this embodiment, as the mounting means of the nut 2, while being processed in advance an annular groove 8 on its outer periphery to form a ring protrusion 7 to the nut 2, bolt insertion length of the back holding plate 4 in the clip body 1 hole 6 is a Dharma-shaped hole comprising a large-diameter portion 6a large enough to fit the annular projection 7 of the nut 2 and a small-diameter portion 6b smaller in diameter than the outer diameter of the annular projection 7 and having a width enough to fit the annular groove 8. Further, a protrusion 22 as an example of a retaining means for the nut 2 is formed to bulge inwardly on the posture holding piece 9 of the back clamping plate 4.

In this embodiment, the nut 2 is forced into the small diameter portion 6b of the bolt insertion long hole 6 against after fitted to the annular projection 7 on the large-diameter portion 6a of the bolt insertion long hole 6 to the elasticity of the posture holding piece 9 It is attached to the back clamping plate 4 by sliding it. Therefore, a caulking process is not necessary.

(5). Others The present invention can be embodied in various ways other than the above embodiment. For example, the shape and size of the clip body can be arbitrarily set according to the application. It is also possible to attach a plurality of nuts to one clip body. Further, the nut is not limited to a hexagon, and a square nut can also be used.

It is a figure which shows a structure of the clip nut of 1st Embodiment. It is a figure which shows the use condition of 1st Embodiment. It is a figure which shows the use condition of 1st Embodiment. It is a figure which shows the use condition of 1st Embodiment. It is a figure which shows 2nd Embodiment. It is a figure which shows a reference example . It is a figure which shows 3rd Embodiment.

DESCRIPTION OF SYMBOLS 1 Clip body 2 Nut 3 Front clamping plate 4 Back clamping plate 5 Connection part 6 Bolt insertion elongate hole of back clamping board 7 Annular protrusion 8 Annular groove of annular projection 9 Attitude holding piece 10 Bolt 11 Retaining part 12 Workpiece (first Building material as an example of 1 work) 14 Bracket material as an example of work (2nd work) 15, 16 Bolt insertion hole of work

Claims (3)

It consists of a clip body made of an elastic plate that sandwiches the workpiece, and a non-circular nut having at least a pair of parallel side surfaces,
The clip body includes a front holding plate that overlaps one surface of the work, a back holding plate that overlaps the other surface of the work, and a connection portion that connects the front holding plate and the back holding plate at one end thereof. The back clamping plate has a bolt insertion long hole extending long along a line connecting the free end of the back clamping plate and the connecting portion, and the reverse side of the back clamping plate is opposite to the front clamping plate. The nut is arranged so that the bolt inserted into the bolt insertion elongated hole can be screwed into the surface of
The structure
A cylindrical annular projection that enters the bolt insertion long hole of the back clamping plate is integrally formed on a portion of the nut that overlaps with the back clamping plate and around the female screw hole. By forming an annular groove having a larger diameter than the groove width of the bolt insertion long hole and fitting an inner peripheral edge of the bolt insertion long hole in the annular protrusion, the nut cannot be removed from the bolt insertion long hole. The nut is slidable in the longitudinal direction of the bolt insertion long hole by holding the bolt insertion elongated hole in the longitudinal direction with a length larger than the inner diameter of the annular groove in the annular projection. And
Furthermore, the annular projection of the nut is circular and the back holding plate of the clip body, that the said table holding plate from the Urakyo holding plates projecting to the opposite side per parallel pair of side surfaces of the nut a pair of posture holding pieces for holding against rotation the nut is formed by,
Clip nut. On the front clamping plate of the clip body, a retaining piece that enters a bolt insertion long hole made in the workpiece is formed in a state that does not interfere with the bolt.
The clip nut according to claim 1. The bolt insertion long hole of the back clamping plate in the clip body includes a large-diameter portion that is large enough to fit the annular protrusion of the nut, and a small-diameter portion that is smaller in diameter than the outer diameter of the annular protrusion and that can fit the annular groove. Formed in a dharma-shaped hole consisting of
The clip nut according to claim 1 or 2.

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