JP3120148B2 - Sword point bolt for tight frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of sword bolts for tight frames.

[0002]

2. Description of the Related Art Conventional sword bolts for tight frames are
The insertion protrusion formed on the upper portion of the screw portion is formed in one step or multiple steps, and the insertion protrusion on the upper portion is formed in the shape of a sword.

[0003] Therefore, the top of the folded roof material is hit with a hitting tool from above to the top of the sword bolt, and when the pointed portion of the sword breaks the folded roof material, it is hit with a uniform hitting force at a high place. It was extremely difficult.

[0004] Further, the conventional sword-point bolt is high at the time of drilling work by the pointed portion of the point of the sword, has a slope, and has a pointed top.
At the time of drilling, the lengths of the plurality of cracks were extremely irregular, and holes were formed.

[0005] Therefore, in the case of a long tear as described above, the seal nut which is screwed into the seal nut is protruded from the seal packing attached thereto, and rainwater infiltrates due to a capillary phenomenon, causing a leak of rain.

[0006]

However, the present invention provides
Even if the forged roofing material that was laid over the tight frame with the sword bolt was drilled with the sword bolt,
The length of a plurality of cracks generated at the time of drilling is made almost uniform.

Further, according to the present invention, at the time of the above-mentioned drilling, the drilling can be performed with almost no difference from the load at the time of the drilling operation by the point of the conventional sword bolt.

In addition, the present invention can solve the problem of rain leakage due to infiltration of rainwater because the holes can be formed with the length of the cracks when forming the holes as described above.

[0009]

According to the first aspect of the present invention,
In a sword-point bolt comprising a head, a shank, and a screw portion, a circular protrusion having a diameter substantially equal to the bottom diameter of the screw portion is formed by projecting a predetermined length above the screw portion. The top of the shape protrusion is an inverted conical recess in which the center of the protrusion is the lowest, and the outer peripheral edge of the top is formed in a pointed shape. is there.

According to a second aspect of the present invention, there is provided a sword point bolt for a tight frame, wherein a top of the circular projection is inclined at a predetermined angle to form an inverted conical recess.

According to a third aspect of the present invention, in a sword bolt comprising a head, a shank, and a screw portion, a circular protruding portion having a diameter substantially equal to a bottom diameter of the screw portion is provided above the screw portion. A sword point bolt for a tight frame, wherein the sword point bolt is provided with a predetermined length, and a top of the circular protrusion is a curved concave portion.

According to a fourth aspect of the present invention, in a sword bolt comprising a head, a shank, and a screw portion, a circular protrusion having a diameter substantially equal to a bottom diameter of the screw portion is provided above the screw portion. A sword tip for a tight frame, wherein the tip of the circular projection is formed as a linear bottom passing through the center, and an inclined recess which rises symmetrically above the bottom. It is a bolt.

According to a fifth aspect of the present invention, in a sword bolt comprising a head, a shank, and a screw portion, a circular protruding portion having a diameter substantially equal to a bottom diameter of the screw portion is provided above the screw portion. The circular projection is made to project by a predetermined length, and the top of the circular protruding portion is formed into a point inside the top and the entire outside top is pointed.
The top of the shape is inclined toward the bottom of the center to form a slope
Then, the circular bottom formed at the bottom of the inclined portion is used as a base.
And a conical protruding portion slightly higher than the pointed top portion is formed.
It is.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the invention described in claim 1 are as follows. This embodiment is shown in FIG. 1 and FIG. In the figure, reference numeral a denotes a sword-point bolt of the present embodiment, reference numeral 1 denotes a head constituting the sword-point bolt a, reference numeral 2 denotes a shank, and reference numeral 3 denotes a screw portion.

A circular protrusion 4 having a diameter substantially equal to the bottom diameter of the screw portion 3 is provided above the screw portion 3 by a predetermined length. The top 5 of the circular projection 4 is formed as an inverted conical recess 7 in which the center 6 of the projection 4 is the lowest, and the outer peripheral edge of the top 5 is formed in a pointed shape.

The sword-point bolt a having the above-described configuration projects from the top of the tight frame. Then, after the folded roof material 8 is roofed, the head of the sword-point bolt a is hit with a hitting tool, and the periphery of the top 5 where the height of the sword-point bolt a is uniform is circular. With the pointed top 5, a circular-shaped fitting hole 9 is formed in the folded roof material 8, and the crack and the height of the burr are also somewhat uniform.

In this regard, the length of the split is not uniform, and the height of the burr is slightly different from the conventional insertion hole 10 which is slightly high.

An embodiment according to the second aspect of the present invention is as follows. This embodiment is shown in FIG. 3 and FIG . In the figure, reference symbol d denotes a sword point bolt of the present embodiment.
Reference numeral 1 denotes a head constituting the blade point bolt d, reference numeral 2 denotes a shank, and reference numeral 3 denotes a screw portion.

The point d of the sword point bolt d is that the top 5 of the circular projection 4 formed above the screw portion 3 is inclined at a slight angle to form an inverted conical recess 13. In the inverted conical recess 13 formed as described above, the corner 12 between the inclined top 5 and the side surface 11 of the conical protrusion 4 is formed in a pointed shape.

Therefore, after the folded roofing material 8 is constructed above the tight frame on which the sword-point bolt d protrudes from the top, and the top 5 of the sword-point bolt d is hit with a hitting tool, a higher corner is obtained. The folded roof material is sequentially cut by the lower corner portion 12 from the portion 12. The cracks caused by the above-mentioned cutting are slightly uniform, and the burrs are almost the same height.

An embodiment according to the third aspect of the present invention is as follows. This embodiment is shown in FIG. 5 and FIG . In the figure, reference symbol e denotes a sword point bolt of the present embodiment.
Reference numeral 1 denotes a head constituting the blade point bolt e, reference numeral 2 denotes a shank, and reference numeral 3 denotes a screw portion.

The point of the sword-point bolt e is that the top 5 of the circular projection 4 formed above the screw portion 3 is formed in the curved concave portion 14. Curved recess 1 formed as described above
A corner 12 between the top 5 of the base 4 and the side surface 11 of the circular protrusion 4 is formed in a pointed shape.

Therefore, after the folded roofing material 8 is constructed above the tight frame on which the sword-point bolt e protrudes from the top, and the top 5 of the sword-point bolt e is hit with a hitting tool, a higher facing The folded roof material is sequentially cut by the lower corners 12 from the corners 12 to be cut. The cracks caused by the above-mentioned cutting are slightly uniform, and the burrs are almost the same height.

An embodiment according to the fourth aspect of the present invention is as follows. This embodiment is shown in FIG. 7 and FIG . In the figure, the symbol f indicates the sword point bolt of the present embodiment.
Reference numeral 1 denotes a head constituting the blade tip bolt f, reference numeral 2 denotes a shank, and reference numeral 3 denotes a screw portion.

The sword-point bolt f has a sloped concave portion in which the top 5 of the circular protrusion 4 formed above the screw portion 3 is a straight bottom 15 passing through the center, and rises symmetrically above the bottom 15. 16 is formed. The corner between the top 5 of the recess 16 formed as described above and the side surface 11 of the circular projection 4 is formed in a pointed shape.

Therefore, after the folded roofing material 8 is constructed above the tight frame on which the sword-point bolt f protrudes from the top, and the top 5 of the sword-point bolt f is hit with a hitting tool, a higher corner is obtained. The folded roof material is sequentially cut by the lower corner portion 12 from the portion 12. The cracks caused by the above-mentioned cutting are slightly uniform, and the burrs are almost the same height.

The embodiment according to the fifth aspect of the present invention is as follows. This embodiment is shown in FIG. 9 and FIG . In the figure, reference numeral g denotes a sword bolt according to the present embodiment. Reference numeral 1 denotes a head constituting the blade point bolt g, and reference numeral 2 denotes a head.
Indicates a shank, and reference numeral 3 indicates a screw portion.

The sword-point bolt g is formed such that the top 5 of the circular protrusion 4 formed above the screw portion 3 is formed inside the top 5 at the outer top.
The entire part is pointed, and the pointed top 5a is located at the center lower bottom.
Forming an inclined portion 19 in the direction of
19 with the circular bottom 18 formed at the bottom of the base 19 as a base.
To form a slightly higher conical protrusion 17 from the pointed top 5a
You.

Therefore, after the folded roofing material 8 is constructed above the tight frame having the sword-point bolt g protruding from the top, the top 5 of the sword-point bolt g is hit with a hitting tool, and the conical protrusion is formed. A small hole is made by 17 and then the folded roofing material is cut by the pointed corners 12. The cracks caused by the above-mentioned cutting are slightly uniform, and the burrs are almost the same height.

[0030]

According to the first aspect of the present invention, a circular projection having a diameter substantially equal to a bottom diameter of the screw portion is provided on an upper portion of the screw portion of the sword bolt including a head, a shank, and a screw portion. A predetermined length, and the top of the circular protrusion is
The center of the protruding portion is formed as an inverted conical concave portion having the lowest height, and the outer peripheral portion of the top portion is formed in a pointed shape, so that when the head of the sword bolt is hit with a hitting tool, folding is performed. The roof material has the advantage that cracks are slightly uniform in the roof material, the height of the burr is lower than that of the conventional one, and a uniform circular insertion hole can be formed.

According to the second aspect of the present invention, the top of the circular projection is inclined at a predetermined angle to form an inverted conical recess, and the corner of the top of the projection is pointed. When the top of the sword bolt is hit with a hitting tool, the split roof material has a slightly uniform crack in the folded roof material from the higher top corner to the lower top corner, and the burr height is the same as the conventional one. This has an advantage that a circular insertion hole having a relatively low and uniform circular shape can be formed.

According to a third aspect of the present invention, since the top of the circular protrusion is a curved concave portion and the corner of the top of the protrusion is pointed, the top of the sword bolt is hit with a beating tool. When hitting, the folded roof material has a slightly uniform crack in the folded roof material in order from the opposing higher top corner to the lower top corner, and the burr height is lower and more uniform than the conventional one. This has the advantage that a circular insertion hole can be formed.

According to a fourth aspect of the present invention, the top of the circular protrusion is a straight bottom passing through the center, the inclined recess is symmetrically rising above the bottom, and the corner of the top of the protrusion is provided. When the top of the sword-point bolt is hit with a hitting tool, the split roof material has a slight break from the higher upper corner to the lower top corner. There is an advantage that a uniform circular insertion hole can be formed with a uniform, lower burr height than that of the conventional one.

According to a fifth aspect of the present invention, the top of the circular protruding portion has a pointed shape inside the top and the entire outer top.
The pointed top is tilted toward the bottom of the center to form a slope.
And a circular bottom formed at the bottom of the inclined portion as a base.
To form a conical protrusion slightly higher than the pointed top
When the top of the sword bolt is hit with a hitting tool, the cracks in the folded roofing material are gradually uniform from the conical protrusion to the circular corner, and the height of the burr is This has an advantage that a circular insertion hole having a relatively low and uniform circular shape can be formed.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a sword bolt for a tight frame according to the present invention.

FIG. 2 is a perspective view of the sword bolt of FIG. 1;

FIG. 3 is a partially cutaway front view of a sword bolt according to a second embodiment.

FIG. 4 is a perspective view of the blade point bolt of FIG. 3;

FIG. 5 is a partially cutaway front view of a blade tip bolt according to a third embodiment.

FIG. 6 is a perspective view of the pointed bolt of FIG. 5;

FIG. 7 is a partially cutaway front view of a sword bolt according to a fourth embodiment.

FIG. 8 is a perspective view of the pointed bolt of FIG. 7;

FIG. 9 is a partially cutaway front view of a sword bolt according to a fifth embodiment.

FIG. 10 is a perspective view of the sword bolt of FIG. 9;

FIG. 11 is a partially cutaway perspective view of a folded roof material having a hole formed by the sword bolt of FIGS. 1 to 10;

FIG. 12 is a partially cutaway perspective view of a folded roof material having a hole formed by a conventional pointed bolt.

[Explanation of symbols]

 a, b, c, d, e, f, g, h Sword point bolt 1 Head 2 Shank 3 Screw 4 Circular protrusion 5 Top 6 Center 7 Depression 8 Folded roof material 9 Fitting hole 11 Side surface 12 Corner 13 Conical recess 14 Curved recess 15 Bottom 16 Concave 17 Conical projection 18 Circular bottom 19 Slope

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16B 35/00-35/04

Claims (5)

(57) [Claims] 1. A sword bolt comprising a head, a shank, and a screw portion, wherein a circular protrusion having a diameter substantially equal to a bottom diameter of the screw portion is protruded by a predetermined length above the screw portion. Wherein the top of the circular protrusion is an inverted conical recess with the center of the protrusion being the lowest, and the outer periphery of the top is pointed. Sword point bolt for frame. 2. A sword point bolt for a tight frame according to claim 1, wherein a top of said circular projection is inclined at a predetermined angle to form an inverted conical recess. 3. A sword-point bolt comprising a head, a shank, and a screw portion, wherein a circular protrusion having a diameter substantially equal to the bottom diameter of the screw portion is projected above the screw portion by a predetermined length. A sword point bolt for a tight frame, wherein a top portion of the circular protrusion is a curved concave portion. 4. A sword-point bolt comprising a head, a shank, and a screw portion, wherein a circular protrusion having a diameter substantially equal to a bottom diameter of the screw portion is protruded by a predetermined length above the screw portion. A sword point bolt for a tight frame, wherein a top of the circular projection is a straight bottom passing through the center and an inclined recess which rises symmetrically above the bottom. 5. A sword-point bolt comprising a head, a shank, and a screw portion, wherein a circular protrusion having a diameter substantially equal to a bottom diameter of the screw portion is protruded by a predetermined length above the screw portion. The top of the circular protrusion is set inside the top, and the entire outer top is pointed.
And the pointed apex is inclined downward toward the center.
A circular shape formed with an inclined portion and formed at the bottom of the inclined portion
The Jo bottom in the base high conical slightly from than the pointed top
A sword-point bolt for a tight frame, characterized by forming a protruding portion .