JP2002250327A - Connecting metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting metal used to fixedly connect adjacent columns to each other mainly in a prefabricated house, manufacturable at a low cost, being easily to carry and store. SOLUTION: This connecting metal comprises a screw metal 13 having bolts or nuts, a screw-metal holder 12 capable of attaching the screw metal 13 unrotatably and removably, and a connection plate 11 for mounting the screw- metal holder 12 thereon and having a bolt inert hole drilled in the screw meal 13 installed on the screw-metal holder 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting metal used mainly in prefabricated buildings.

[0002]

2. Description of the Related Art Conventionally, in a prefabricated building, a connecting fitting B as shown in FIG. 21 has been used to connect columns or beams of adjacent units or girders. The connection fitting B includes a connection plate 51, a screw holder holding member 52 fixedly disposed on the connection plate 51, and a screw holder 52.
And a screw fitting 53 that is loosely fitted into the fitting. Here, the screw fitting 53 is a bolt or a nut, either of which is previously attached to the screw fitting holder 52 as described later. In FIG. 21, a nut is used as the screw fitting 53.

[0003] A screw fitting holder 52 has a bottom wall 52 long in one direction.
a, the left side wall 52b and the right side wall 52c are respectively arranged on both side edges along the longitudinal direction of the bottom wall 52a so as to face each other,
It has a U-shaped cross section. In particular, the interval between the left side wall 52b and the right side wall 52c is an interval at which the screw fitting 53 can be fitted, and the screw fitting 53 fitted between the left and right side walls 52b, 52c, the left and right side walls 52b, 52c is a distance that can be held so as not to rotate.

[0004] The screw fittings 53 are arranged at both ends of the screw holding member 52, and the screw mounting portions of the screw holding member 52 project from the bottom wall 52 a. Captive piece 56
And an inner regulating piece 57 protruding inward at the upper edge of the left side wall 52b or the right side wall 52c.
The screw fitting 53 is held between the screw and the inner regulating piece 57.

Further, an upper end locking piece 58 is provided on the upper edges of the left and right side walls 52b, 52c between the falling-off preventing piece 56 and the inner regulating piece 57,
The upper end locking piece 58 locks the upper part of the screw fitting 53 held between the fall prevention piece 56 and the inner regulating piece 57 so that the screw fitting 53 does not fall off the screw holding member 52. Like that.

[0006] As described above, the screw fitting holder 52 to which the screw fitting 53 is attached is fixed to the connecting plate 51 by welding, bonding, or the like, and is arranged. In addition, here the connecting plate
The caulking protrusion 59 is provided on the screw 51, and the caulking protrusion 59 is provided in the screw fitting holder 52, inserted into the caulking protrusion penetrating hole 60, and screwed by caulking the tip of the caulking protrusion 59. The fitting holder 52 is mounted on the connecting plate 51 to manufacture the connecting fitting B.

[0007] Naturally, the bottom wall 52a of the screw fitting 53 of the screw fitting holder 52 to which the screw fitting 53 is attached and the connecting plate 51 are screwed to the nuts of the screw fitting 53. An insertion hole (not shown) into which a matching bolt is inserted is formed.

[0008] The connecting bracket B manufactured as described above.
22, for example, as shown in FIG. 22, is provided so as to bridge between the columns C and C of the adjacent prefabricated units, and by connecting each column C and the connecting bracket B with bolts 53 '. The beam C and the beam C can be integrally connected via the connection plate 51. Reference numeral 61 is a spring washer, and reference numeral 62 is a washer.

The nut which is the screw fitting 53 is a screw fitting holder.
By being fixed by 52, the screw fitting 53 does not need to be prevented from rotating, and the bolt 53 'need only be screwed into the screw fitting 53, so that work can be performed with one hand and work efficiency can be improved. It can be improved.

[0010]

However, such a connecting bracket has a problem that it is difficult to reduce the manufacturing cost because it takes time and effort to manufacture the connecting bracket, and it is difficult to reduce the cost. Was. In addition, since the connecting plate, the screw fitting holder fixedly arranged on the connecting plate, and the screw fitting loosely fitted to the screw holding member are configured in combination, one connection The metal fittings have large irregularities, making it difficult to collectively store a plurality of fittings, and there is a problem that extra space is required for transportation and storage of inventory.

[0011]

Accordingly, in the present invention, a screw fitting made of a bolt or a nut, and a screw fitting that can be attached to a non-rotatable state and is detachable. A connection fitting comprising a metal holder and a connecting plate to which the screwed metal holder is attached, and a bolt insertion hole is drilled in the screwed metal part attached to the screwed metal holder. Thus, the screw holder is made detachable from the connecting plate.

That is, when not in use, the screw fitting, the screw holding member, and the connecting plate are separated, and are assembled and used at the time of use. Therefore,
It is possible to reduce the manufacturing cost, and to provide a low-cost, high-operability connection fitting.

Further, the present invention has the following features. In other words, the screw holder is a U-shaped groove formed of a bottom wall, a left side wall, and a right side wall, and the screw can be fitted between the left and right side walls. A bottom wall fitting hole is provided on the bottom wall that is superimposed on the connecting plate when attached to the plate, and a bottom wall fitting hole is provided for fitting with a fitting projection provided on the connecting plate, and an inner peripheral edge of the bottom wall fitting hole is provided. That the locking claw protrudes toward the inside. The screw fitting holder is a U-shaped groove formed of a bottom wall, a left side wall, and a right side wall. The screw fitting can be fitted between the left and right side walls. A J-shaped fitting that can be fitted into a fitting hole of a connecting plate formed in the connecting plate is provided on a bottom wall that is superimposed on the connecting plate at the time of attachment. The screw fitting holder is a U-shaped groove formed of a bottom wall, a left side wall, and a right side wall. The screw fitting can be fitted between the left and right side walls. In the bottom wall overlapped with the connecting plate at the time of attachment of the connecting plate, a bottom wall engaging hole for engaging with the engaging projecting pillar protruding from the connecting plate is provided, and the locking protrusion protruding from the connecting plate. A locking projection fitting hole that fits with A screw fitting is formed by extending a holding piece at the upper edge of both ends of the left side wall and the right side wall, forming a bent portion bent in an inward direction in a middle portion of the holding piece, and fitted between the left and right side walls. That you hold it. A locking projection protrudes inward from both ends of the left side wall and the right side wall, and a screw fitting fitted between the left and right side walls is locked by the locking projection. On the side edge of the opening of the bottom wall bolt insertion hole provided on the bottom wall,
The bolt retaining piece is provided upright in a tilted state so that the bolt inserted into the bottom wall bolt insertion hole is locked.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A connecting fitting according to the present invention comprises a screw fitting, a screw holding member, and a connecting plate. At the time of use, the screw fitting, the screw holder, and the connecting plate are assembled and used.

Therefore, when manufacturing the connection fitting, it is only necessary to form the screwing holder and the connection plate into a required shape, and the assembling work can be omitted, thereby reducing the manufacturing cost. Can be done. Also, a screw fitting,
The operation of assembling the screw holder and the connecting plate can also be easily performed, so that the operation can be performed without feeling troublesome in the assembling operation.

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

[0017]

Embodiment (1) First Embodiment FIG. 1 is a perspective view of a connection fitting A1 according to a first embodiment. The connection fitting A1 of the present invention includes a connection plate 11, a screwed metal holder 12,
The screw fitting 13 is used. In particular, in the present embodiment, the screw fitting 13 is a nut. The screw fitting 13 is not limited to a nut, but may be a bolt as shown in FIG.

The connecting plate 11 is a substantially rectangular metal plate of a required size, and a pair of connecting plate bolt insertion holes spaced apart from each other along a pair of opposing sides of the connecting plate 11. 11a
Are provided. That is, the connection plate bolt insertion holes 11a are formed at the four corners of the substantially rectangular connection plate 11, respectively.

Further, two cylindrical projecting pillars 11b, 11b for fitting are provided between the connecting plate bolt insertion holes 11a, 11a. That is, the two connecting plate bolt insertion holes 11
a, 11a and the two fitting protruding pillars 11b, 11b are arranged on the same straight line. In this embodiment, the projecting pillar 11 for fitting is used.
Although b and 11b are formed by embossing, they may be provided by welding a cylindrical body. Alternatively, other forming methods may be used.
The fitting protruding pillar 11b is not limited to a column, but may be a prism.

As shown in FIGS. 3 to 5, the screw fitting holder 12 has a substantially U-shaped cross section formed by a bottom wall 12a and left and right side walls 12b and 12c provided on the left and right sides of the bottom wall 12a, respectively. It is a groove-like body that is long in one direction. FIG. 3 is a plan view of the screw holder 12 to which the screw 13 made of a nut is attached, FIG. 4 is a front view thereof, and FIG. 5 is a right side view thereof.

The screw fitting holder 12 overlaps two connecting plate bolt insertion holes 11a, 11a and two fitting projecting pillars 11b, 11b aligned on a straight line of the connecting plate 11. Bottom wall fitting holes 14, 14 are provided in the bottom wall 12a corresponding to the fitting projecting pillars 11b, 11b of the connecting plate 11, respectively, and the connecting plate bolt inserting holes 11a, 11a of the connecting plate 11 are provided. Bottom wall bolt insertion holes 15, 15 are provided in the bottom wall 12a corresponding to.

In particular, the bottom wall fitting hole 14 is provided with a protruding pillar for fitting.
It is formed in a size that fits loosely with 11b, and a plurality of locking claws 14a project inward from the inner peripheral edge of the bottom wall fitting hole 14. Then, as shown in the cross-sectional view of FIG. 6, the bottom wall fitting hole 14 is inserted into the fitting projection pillar 11 while the tip of the locking claw 14a is pressed against the peripheral surface of the fitting projection pillar 11b.
b, the screwed metal holder 12 is connected to the connecting plate 1
So that it can be attached to one.

As described above, by engaging with the locking claws 14a, it is possible to attach the screw fitting holder 12 to the connecting plate 11 without causing a positional shift. ,
It is possible to assemble with high accuracy, and to prevent rattling of the screw fitting holder 12 after attaching to the connecting plate 11.

At both ends in the longitudinal direction of the bottom wall 12a, plate-shaped fall-prevention pieces 16 are respectively extended, and the fall-prevention pieces 16 are bent substantially 90 degrees in the direction of the upper surface of the bottom wall 12a to stand up.
The screw fitting 13 is prevented from dropping out of the screw holder 12.

An inner regulating piece 17b formed by providing a substantially U-shaped opening 17a in the bottom wall 12a opposite to the falling-off preventing piece 16 across the bottom wall bolt insertion hole 15 is provided. It is provided so that the inside regulating piece 17b is erected so as to face the falling-off preventing piece 16. This allows
The screw fitting 13 can be restricted and held between the drop-preventing piece 16 and the inner regulating piece 17b, and the screw fitting 13 can be easily attached to the exact position of the screw holding member 12. Can be.

Further, as shown in FIG. 5, each of the holding pieces 18
Has been extended. In particular, the holding piece 18 forms a bent portion 18a which is bent in an inward direction at an intermediate portion. Then, the screw fitting 13 is locked between the bent portions 18a, 18a of the holding pieces 18, 18, so that the screw fitting 13 is prevented from dropping from the screw holder 12. That is,
A clip 18 extends from the holding piece 18 extending to the upper edges of the left and right side walls 12b and 12c.

The screw fittings 13 are added to the clip portion 19 of the screw fitting holder 12 configured as described above, and attached. The screw fitting holder 12 with the screw fitting 13 attached thereto. Can be used as the connection fitting A1 by attaching it to the connection plate 11.

While the connecting fitting A1 is assembled and used at the time of use, it can be transported and stored separately for each of the connecting plate 11, the screw fitting holder 12, and the screw fitting 13 at the time of transportation or storage as stock. Since it is possible, it can be made compact without taking up space, and can be easily transported.

In particular, since the connecting plate 11 and the screw holder 12 are separately formed and supplied without assembling, the manufacturing cost can be reduced. Further, although each component is supplied in the state of each component, it can be easily assembled, so that the operator can use it without feeling troublesome.

(2) Second Embodiment FIG. 7 is a perspective view of a connection fitting A2 according to a second embodiment. The connection fitting A2 of the present invention also includes a connection plate 21, a screwed metal holder 22,
It is constituted by the screw fitting 23. Also in this embodiment, the screw fitting 23 is not limited to a nut, and may be a bolt as shown in FIG.

As in the first embodiment, the connecting plate 21 is a substantially rectangular metal plate of a required size, and is spaced apart from each other along a pair of opposing sides of the connecting plate 21. One set of connecting plate bolt insertion holes 21a is formed.

Further, in this embodiment, two connecting plate fitting holes 21b, 21b are provided between the connecting plate bolt insertion holes 21a, 21a. That is, two connection plate bolt insertion holes
21a, 21a and the two connecting plate fitting holes 21b, 21b are arranged on the same straight line. In particular, the connection plate fitting holes 21b, 21b
As shown in the cross-sectional view of FIG. 12, the diameter of the opening on the side of the screw fitting holder 22 is continuously reduced so as to be smaller than the diameter of the opening on the opposite side so as to form an inverted mortar.

As shown in FIGS. 9 to 11, the screw fitting holder 22 has a substantially U-shaped cross section formed by a bottom wall 22a and left and right side walls 22b and 22c provided on the left and right sides of the bottom wall 22a, respectively. It is a groove-like body that is long in one direction. FIG. 9 is a plan view of the screw holder 22 to which the screw 23 made of a nut is attached.
FIG. 10 is a front view, and FIG. 11 is a right side view.

The screw fitting holder 22 has two connecting plate bolt insertion holes 21 whose bottom walls 22a are aligned with the connecting plate 21 in a straight line.
a, 21a and two connecting plate fitting holes 21b, 21b are overlapped with each other, and J-shaped fittings are respectively inserted into bottom wall 22a portions of the connecting plate 21 corresponding to the connecting plate fitting holes 21b, 21b. Body 24, 24, and connecting plate bolt insertion holes 21a, 21a of the connecting plate 21.
Bottom wall bolt insertion holes 25, 25 are provided in the bottom wall 22a corresponding to the above.

In particular, the J-shaped insert 24 has a U-shaped
A cut-and-raised piece is formed by providing a character-shaped cut-and-raised opening 24a, and the cut-and-raised piece is raised on the back side of the bottom wall 22a and the tip is curved by a substantially J-shape. . And the same J-shaped insert
The screw fitting holder 22 can be attached to the connection plate 21 by fitting the screw 24 into the connection plate fitting hole 21b.

That is, as shown in FIG.
The cut-and-raised piece raised on the back side of a is bent in a substantially L-shape at the first bent portion 24b, and a second bent portion 24d is provided on the tip portion 24c side of the first bent portion 24b to be further bent By doing so, the cut-and-raised piece is made substantially J-shaped.

In particular, if the distance between the first bent portion 24b and the second bent portion 24d is not changed, the J-shaped insert 24 cannot be inserted into the connection plate fitting hole 21b formed in the connection plate 21. Although it is not possible, the insertion can be made by bending the J-shaped fitting body 24 itself. Then, after the J-shaped insertion body 24 is inserted into the connection plate fitting hole 21b, the bending at the time of insertion returns to the original state, so that the attachment can be easily performed so as not to fall off.

Further, as shown in FIG. 12, when the J-shaped insertion member 24 is inserted into the connection plate fitting hole 21b, the connection end portion 24c of the J-shaped insertion member 24 has an inverted mortar shape. Plate fitting hole 21b
Abuts against the inner peripheral surface of the Therefore, it is possible to prevent rattling when the screw fitting holder 22 is attached to the connecting plate 21.

At both ends in the longitudinal direction of the bottom wall 22a, plate-shaped fall-off prevention pieces 26 are respectively extended, and the fall-off prevention pieces 26 are bent substantially 90 degrees in the direction of the upper surface of the bottom wall 22a to stand up.
The screw fitting 23 is prevented from falling off from the screw fitting holder 22.

Further, an inner regulating piece 2 formed by providing a substantially U-shaped cut-and-raised opening 27a in the bottom wall 22a on the opposite side of the falling-off preventing piece 26 across the bottom wall bolt insertion hole 25.
7b is provided so that the inner side regulating piece 27b is erected so as to face the falling-off preventing piece 26. Thus, the screw fitting 23 can be regulated and held between the drop-off preventing piece 26 and the inner regulating piece 27b. In this embodiment, a portion of the substantially U-shaped cut-and-raised opening 27a overlaps the U-shaped cut-and-raised opening 24a.

As shown in FIG. 10, screwed metal protection pieces are provided on upper edges of both left and right side walls 22b and 22c in the longitudinal direction.
28 are extended. The screw fitting protection piece 28 is provided to prevent the screw fitting 23 attached to the screw holding member 22 from being exposed from the screw holding member 22 as described later. This prevents the screw 23 from dropping from the screw holder 22 due to an external force acting directly on the exposed screw 23. When the heights of the left and right side walls 22b and 22c are sufficiently high, the screw fitting protection piece 28 may not be provided.

As shown in FIG. 9, the mounting portions of the screw fittings 23 at the left and right ends of the left and right side walls 22b and 22c in the longitudinal direction are as shown in FIG.
Embossed locking projections facing inward
29 are protruding. In particular, the locking projection 29 locks the upper end portion of the screw fitting 23 attached to the screw holding member 22, and the screw fitting clamped between the left and right side walls 22b, 22c. 23 is prevented from falling off.

The screw fittings 23 are respectively attached to the screw fitting holders 22 configured as described above, and the screw fitting holders 22 with the screw fittings 23 attached are attached to the connecting plate 21. Thus, it can be used as the connection fitting A2.

The method of attaching the screw holder 22 to the connecting plate 21 is not limited to the above-described J-shaped insert 24, but may be the form of the first embodiment. . In addition, the attachment form of the screw fitting 23 to the screw fitting holder 22 may be a form including the clip portion 19 as in the first embodiment.

(3) Third Embodiment FIG. 13 shows a screw-fastening holder 32 according to a third embodiment in which the connecting fitting 33 is a bolt. In the present embodiment, the screw holder 32 also has a bottom wall 32a, and a left-side wall 32b and a right side wall 32c provided on the left and right sides of the bottom wall 32a, respectively, and a groove that is long in one direction and has a substantially U-shaped cross section. It has a shape. Note that the attachment form of the screw fitting holder 32 to the connecting plate (not shown) uses the attachment form of the first embodiment or the second embodiment, and description thereof is omitted in the description here. In addition, the attachment form part is omitted in the drawings.

The bottom wall 32a has a bottom wall bolt insertion hole at a position corresponding to a connection plate bolt insertion hole (not shown) of the connection plate.
35 is provided, and a connection bracket 33 is inserted into the bolt insertion hole 35 on the bottom wall.
Bolts.

A bolt retaining piece 36 is provided at the opening side edge of the bottom wall bolt insertion hole 35 so as to extend therefrom.
36 is raised on the side of the bottom wall 32a that overlaps the connecting plate. In particular, as shown in FIG. 14, the bolt retaining piece 36 does not stand upright with respect to the bottom wall 32 a but rises in an inclined state. It is trying to close the part. Therefore,
When the bolt that has penetrated the bottom wall bolt insertion hole 35 is about to fall off, the bolt retaining piece 36 is engaged with the screw of the bolt, so that it can be prevented from falling off. Bolt retaining piece 36
It is desirable that the angle of inclination from the vertical direction is 5 to 40 degrees.

In the present embodiment, two bolt retaining pieces 36 are arranged on the peripheral edge of the bottom wall bolt insertion hole 35 so as to face each other. Of these, the bolt retaining piece 36 that does not block a part of the bottom wall bolt insertion hole 35 is the bottom wall bolt insertion hole.
It serves as a guide when inserting / extracting the bolt of the connection fitting 33 to / from the 35.

(4) Fourth Embodiment FIG. 15 is a perspective view of a connection fitting A4 according to a fourth embodiment. The connection fitting A4 of the present invention also includes a connection plate 41,
And a screw fitting 43. In the present embodiment, the screw fitting 43 needs to be a nut because of the manner in which the screw fitting holder 42 is attached to the connecting plate 41 described later.

The connecting plate 41 is, as in the first embodiment, a substantially rectangular metal plate of a required size, and is spaced apart from each other along a pair of opposing sides of the connecting plate 41. One set of connecting plate bolt insertion holes 41a is formed.

Further, in this embodiment, between the connecting plate bolt insertion holes 41a, 41a, the engaging projection pillar 41b and the locking projection 41 are provided.
and c. In particular, the two connecting plate bolt insertion holes 41a, 41a, the engaging projection pillar 41b, and the locking projection 41c are arranged on the same straight line. The engaging projection column 41b and the locking projection 41c may be formed by embossing, or may be provided by welding or the like.

The projecting pillar 41b for engagement has a substantially cylindrical shape in which a part of the circumferential surface of the cylindrical body is cut off to provide two parallel surfaces parallel to each other. Connecting plate bolt insertion holes 41a, 41a, engaging projections 41b, and locking projections
It is disposed so as to be substantially orthogonal to a virtual straight line formed by connecting the first straight line and 41c. The locking projection 41c is a columnar projection, and is provided for stably fixing the screw holder 42 attached to the connecting plate 41, as described later.

As shown in FIGS. 16 to 18, the screw holder 42 has a substantially U-shaped cross section by a bottom wall 42a and left and right walls 42b and 42c provided on the left and right sides of the bottom wall 42a, respectively. It is a groove-like body that is long in one direction. FIG. 16 is a plan view of the screw holder 42 to which the screw 43 made of a nut is attached, FIG. 17 is a front view thereof, and FIG. 18 is a right side view thereof.

On the bottom wall 42a of the screw holder 42, two connecting plate bolt insertion holes 41a, 41a arranged on an imaginary straight line of the connecting plate 41, and a projecting pillar 41b for engagement are formed. Stop projection 41c
And a bottom wall engaging hole 44 is formed in the bottom wall 42a corresponding to the engaging projecting pillar 41b of the connecting plate 41.
b, a locking projection fitting hole 44c is formed in the bottom wall 42a corresponding to the locking projection 41c of the connection plate 41, and further, the connection plate bolt insertion holes 41a, 41a of the connection plate 41 are formed. Bottom wall bolt insertion holes 45, 45 are provided in the bottom wall 42a corresponding to.

In particular, the bottom wall engaging hole 44b has its central portion inscribed with the circumferential surface of the substantially cylindrical engaging protruding column 41b, and has the screw fitting 43 side portion. It is made to bulge into a long hole shape. That is, the bottom wall engaging hole 44b is formed in a long hole shape substantially parallel to the extension direction of the bottom wall 42a. Also, the locking projection fitting hole 44
c is a round hole that fits with the locking projection 41c.

As described above, when attaching the screw holder 42 provided with the bottom wall engaging hole 44b and the locking projection fitting hole 44c to the connecting plate 41, as shown in FIG. The screw fitting holder 42 is positioned in a substantially orthogonal state with respect to a virtual straight line formed by connecting the two connection plate bolt insertion holes 41a, 41a, the projecting pillar 41b for engagement, and the locking projection 41c. Then, the engaging projecting pillar 41b of the connecting plate 41 is inserted into the bottom wall engaging hole 44b of the screw fitting holder 42, and then the screw fitting holder 42 is centered on the engaging projecting pillar 41b. By rotating by approximately 90 degrees, the locking projections 41c of the connecting plate 41 are fitted and disposed in the locking projection fitting holes 44c of the screw holder 42.

In particular, the engaging protruding pillar 41b is provided with two parallel surfaces parallel to each other by shaving off a part of the circumferential surface, and the bottom wall engaging hole 44b is formed by extending the bottom wall 42a. By making the shape of a long hole substantially parallel to the direction, the projecting pillar 41b for engagement is inserted into the hole 44b for bottom wall engagement in a state where the screw holder 42 is positioned substantially orthogonal to the virtual straight line. Easy to insert.

Further, the screw fitting holder 42 is rotated by approximately 90 degrees in a state where the engaging projection pillar 41b is inserted into the bottom wall engaging hole 44b, so that the inner peripheral edge of the bottom wall engaging hole 44b is engaged. The joint protruding column 41b comes into contact with and engages with the circumferential surface. With this configuration, the screw holder 42 can be easily attached to the connecting plate 41 without play.

In a state where the bottom wall engaging hole 44b is engaged with the engaging projecting pillar 41b, an external force acts on the screw holder 42 so that the bottom wall engaging hole 44b and the engaging projecting pillar 41b are engaged. A locking projection 41c and a locking projection fitting hole 44c are provided to serve as a stopper so that the engagement state with the body 41b is not released (see FIG. 19).

The screw fitting holder attached to the connecting plate 41
When removing 42 from the connecting plate 41, the screw fitting holder 42 is slightly lifted from the connecting plate 41 to release the engagement between the locking projection 41c and the locking projection fitting hole 44c, and the screw fitting is left as it is. Holder 42
Is rotated by about 90 degrees in a direction opposite to the previous direction, so that the engagement between the bottom wall engaging hole 44b and the engaging protruding pillar 41b is released, and the bottom wall engaging hole 44b can be easily removed.

At both ends in the longitudinal direction of the bottom wall 42a, FIG.
As shown in FIGS. 19 to 19, plate-shaped fall-off prevention pieces 46 are respectively extended, and the fall-off prevention pieces 46 are bent substantially 90 degrees in the direction of the upper surface of the bottom wall 42a so as to stand up, and from the screw fitting holder 42. Of the screw fitting 43 is prevented from falling off. FIG.
5 is a cross-sectional view of the screw fitting holder 42 to which the screw fitting 43 is attached.

Also, an inner regulating piece 4 formed by providing a substantially U-shaped cut-and-raised opening 47a in the bottom wall 42a on the opposite side of the falling-off preventing piece 46 across the bottom wall bolt insertion hole 45.
7b is provided, and the inside regulating piece 47b is raised so as to face the falling-off preventing piece 46. As a result, FIG.
As shown in FIG. 9, the screw fitting 43 can be regulated and held between the falling-off preventing piece 46 and the inner regulating piece 47b.

As shown in FIG. 17, a screw fitting locking piece 48 having a screw fitting locking claw 48a provided at the upper end thereof is extended from the upper left and right edges of the left and right side walls 42b and 42c. ing.
The screw fitting locking claw 48a projects inward at the upper end edge of the screw fitting locking piece 48, and
The upper edge of the screw fitting 43 is locked by a so as to prevent the screw fitting 43 from dropping from the screw holding member 42.

Further, the screw fitting locking piece 48 is attached to the bottom wall 42a.
As shown in FIG. 19, the length from the upper end to the upper edge becomes longer as approaching the end of the screw holder 42, so that the screw hooks 48a are inclined. .

Then, as shown in FIG. 20, the ends of the screw fitting holders 42 are used as screw fitting insertion ports 49, respectively, from the screw fitting insertion holes 49 along the screw fitting locking claws 48a. The screw fitting 43 can be taken in and out.

The screw fittings 43 are respectively attached to the screw fitting holders 42 configured as described above, and the screw fitting holders 42 with the screw fittings 43 attached are attached to the connecting plate 41. Thus, it can be used as the connection fitting A4.

[0067]

According to the first aspect of the present invention, a screw fitting made of a bolt or a nut and a screw which can be attached to a non-rotatable state and can be detached. A connection fitting comprising a fitting holder and a connection plate having the screw fitting holder attached thereto and a bolt insertion hole formed in a screw fitting portion attached to the screw fitting holder. In addition, since the screw holder is detachable from the connecting plate, the screw holder and the connecting plate can be separately manufactured and provided without assembling, thereby reducing the manufacturing cost. Can be done. Also,
Since they are assembled and used at the time of use, they can be compactly packed at the time of transportation and stock keeping.

According to the second aspect of the present invention, the screw holder is a U-shaped groove having a bottom wall, a left side wall, and a right side wall. A screw fitting can be fitted therein, and a bottom wall fitting hole that fits with a fitting pillar protruding from the connecting plate on a bottom wall that is superimposed on the connecting plate when attached to the connecting plate. With the locking claw protruding inward from the inner peripheral edge of the bottom wall fitting hole, the screw holder can be easily attached to the connecting plate, and the attachment can be easily performed. After that, it can be attached without causing rattling on the screw holder.

According to the third aspect of the present invention, the screw holder is a U-shaped groove formed by a bottom wall, a left side wall, and a right side wall. A J-shaped fitting in which a screw fitting can be fitted, and which can be fitted into a connecting plate fitting hole formed in the connecting plate on the bottom wall that is superimposed on the connecting plate when attached to the connecting plate. By providing the body, the screw holder can be easily attached to the connecting plate, and after the attachment, the screw holder can be attached without rattling. it can.

According to the fourth aspect of the present invention, the screw holder is a U-shaped groove formed by a bottom wall, a left side wall, and a right side wall. A screw fitting is insertable, and a bottom wall engaging hole that engages with an engaging projection protruding from the connecting plate on a bottom wall that is overlapped with the connecting plate when attached to the connecting plate. With the provision of the locking projection fitting hole for fitting with the locking projection protrudingly provided on the connecting plate, the screwed metal holder can be easily attached to the connecting plate, After the attachment, the attachment can be attached to the screw holder without rattling.

According to the fifth aspect of the present invention, the holding pieces are extended to the upper edges of both ends of the left side wall and the right side wall, and are bent inwardly protrudingly in the middle of the holding pieces. The screw fitting is inserted between the left and right side walls, so that the screw fitting can be easily attached to the screw fitting holder, and the attached screw fitting can be easily attached. Metal fittings can be prevented from falling off.

According to the sixth aspect of the present invention, locking projections are provided on both ends of the left side wall and the right side wall so as to project inward, and the screw fittings fitted between the left and right side walls are locked together. By locking with the projections, the screw fitting can be easily attached to the screw fitting holder. further,
It is easy to form a locking projection for locking the screw fitting,
Further, the manufacturing cost can be reduced.

According to the seventh aspect of the present invention, a bolt retaining piece is provided in the opening side edge of the bottom wall bolt insertion hole provided in the bottom wall in a state of being tilted upright, and is provided in the bottom wall bolt insertion hole. By locking the inserted bolt, the bolt can be stably attached very easily and the manufacturing can be performed at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a connection fitting of a first embodiment.

FIG. 2 is an explanatory view showing an embodiment when a screw fitting is a bolt.

FIG. 3 is a plan view of the screwed metal holder of the first embodiment.

FIG. 4 is a front view of the screw holder of the first embodiment.

FIG. 5 is a right side view of the screwed metal holder of the first embodiment.

FIG. 6 is a longitudinal sectional view of the connection fitting of the first embodiment.

FIG. 7 is a perspective view of a connection fitting of the second embodiment.

FIG. 8 is an explanatory view showing an embodiment in which a screw fitting is a bolt.

FIG. 9 is a plan view of the screw holder of the second embodiment.

FIG. 10 is a front view of a screw holder according to a second embodiment.

FIG. 11 is a right side view of a screw holder according to a second embodiment.

FIG. 12 is a cross-sectional view of a screw-fastening holder portion of the connecting hardware according to the second embodiment.

FIG. 13 is a perspective view of a screw holder according to a third embodiment.

FIG. 14 is a cross-sectional view of a screw holder according to a third embodiment.

FIG. 15 is a perspective view of a connection fitting of the fourth embodiment.

FIG. 16 is a plan view of a screw holder according to a fourth embodiment.

FIG. 17 is a front view of a screw holder according to a fourth embodiment;

FIG. 18 is a right side view of a screw holder according to a fourth embodiment.

FIG. 19 is a cross-sectional view of a screw fitting holder of a connecting fitting according to a fourth embodiment.

FIG. 20 is an explanatory view showing a method of attaching a screw fitting in the connecting fitting of the fourth embodiment.

FIG. 21 is a perspective view of a conventional connection fitting.

FIG. 22 is an explanatory diagram showing a use state of a conventional connection fitting.

[Explanation of symbols]

 A1 Connection bracket 11 Connection plate 11a Connection plate bolt insertion hole 11b Projecting pillar for fitting 12 Screw mounting holder 12a Bottom wall 12b Left side wall 12c Right side wall 13 Screw mounting 14 Bottom wall fitting hole 14a Locking claw 15 Bottom Wall bolt insertion hole 16 Captive piece 17a Cut-and-raised opening 17b Inside regulating piece 18 Nipping piece 18a Bend 19 Clip

Claims (7)

[Claims] 1. A screw fitting comprising a bolt or a nut, a screw fitting holder which is attachable to a non-rotatable state and is detachable, and a screw fitting holder. A connecting plate having a body attached thereto and a connecting plate having a bolt insertion hole formed in a screw fitting portion attached to the screw fitting holding member, wherein the screw fitting holder is connected to the connecting plate. A connection fitting which is detachable from a plate. 2. A screw holder having a U-shaped cross section including a bottom wall, a left side wall, and a right side wall, wherein the screw holder can be inserted between the left and right side walls. Further, a bottom wall fitting hole is provided on the bottom wall that is superimposed on the connecting plate when attached to the connecting plate, the bottom wall fitting hole being fitted with a fitting protruding pillar body protruding from the connecting plate. The connecting metal fitting according to claim 1, wherein a locking claw protrudes inward from an inner peripheral edge of the connecting metal. 3. A screw holder having a U-shaped cross section including a bottom wall, a left side wall, and a right side wall, wherein the screw holder can be inserted between the left and right side walls. Furthermore, a J-shaped fitting is provided on the bottom wall that is superimposed on the connecting plate at the time of attachment to the connecting plate, the fitting being capable of being fitted into a connecting plate fitting hole formed in the connecting plate. The connection fitting according to claim 1, wherein 4. A screw holder having a U-shaped cross section including a bottom wall, a left side wall, and a right side wall, wherein the screw holder can be fitted between the left and right side walls. Further, a bottom wall engaging hole is provided on the bottom wall which is superimposed on the connecting plate when attached to the connecting plate, the bottom wall engaging hole is provided for engaging with the engaging projecting pillar provided on the connecting plate, and the connecting plate is provided with a projecting hole. The connection fitting according to claim 1, further comprising a locking projection fitting hole for fitting the locking projection body. 5. A holding piece is extended from an upper edge of both ends of the left side wall and the right side wall, and a bent portion is formed in a middle portion of the holding piece so as to be bent in an inward direction so as to fit between the left and right side walls. The connecting metal fitting according to any one of claims 2 to 4, wherein the screwed metal fitting is sandwiched. 6. A locking projection protrudes inward at both ends of the left side wall and the right side wall, and a screw fitting fitted between the left and right side walls is locked by the locking projection. The connection fitting according to any one of claims 2 to 4, wherein the connection fitting is provided. 7. A bolt retaining piece is provided on the side edge of the opening of the bottom wall bolt insertion hole provided on the bottom wall in an upright state to lock the bolt inserted into the bottom wall bolt insertion hole. The connection fitting according to any one of claims 2 to 4, wherein: