JP3050551U - Waterproof fastening members - Google Patents

Abstract

(57) [Problem] To provide a highly waterproof fastening member having a structure in which rainwater or the like does not easily enter a fastening portion even if the fastening is loose. A ring-shaped washer having an inner peripheral side protruding part whose inner peripheral side protrudes to one side, and a groove for avoiding interference with the inner peripheral side protruding part of the washer are formed on a lower surface of a head. And a ring-shaped rubber packing.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a fastening member having a waterproof effect, and particularly to a fastening member having a large effect for fastening a roofing material of a building.

[0002]

[Prior art]

 When fastening roofing materials such as lined boards to buildings, tacks, bolts, nails, etc. have been used conventionally. Since holes for nails or the like are formed in the roofing material, there is a problem that rainwater enters through the holes.

For this reason, conventionally, a ring-shaped rubber packing (52) is sandwiched between a washer (52) disposed on the lower surface of a head such as a nail (50) and a roofing material (A). As a result, the rainwater (C) on the upper surface of the roofing material (A) is blocked by the rubber packing (52) and does not reach the hole through which the needle portion of the nail (50) penetrates, and the rainwater (C) flows on the lower surface of the roofing material (A). Do not go around. FIG. 6 is a cross-sectional view showing a state in which the roof material (A) is fastened to the roof base material (B) using such a fastening member.

[0004] However, if the fastening with the nail (50) or bolt becomes loose with time, a gap is created between the washer (51) and the head of the nail (50) as shown in FIG. Then, rainwater enters from there and reaches the hole, and enters the lower surface of the roofing material (A).

[0005]

[Problems to be solved by the invention]

 Therefore, a highly waterproof fastening member having a structure in which rainwater or the like does not easily enter the fastening portion even if the fastening is loosened is required.

[0006]

[Means for Solving the Problems]

 The waterproof fastening member according to claim 1 of the present invention has a ring-shaped washer (2) having an inner peripheral side protruding portion (2a) having an inner peripheral side protruding to one side, and the washer on the lower surface of the head. It is characterized by comprising a nail (1) or a stud having a groove (1c) formed therein to avoid interference with the inner peripheral side protruding portion (2a), and a ring-shaped rubber packing (3).

According to this, even if the fastening with the nail (1) or the stud is loosened and a gap is formed between the head of the nail (1) or the stud and the washer (2), the inner periphery of the washer is formed. Since the side protrusion (2a) catches rainwater, it is difficult for the rainwater to flow into the through-hole. Further, since the groove (1c) is provided, the nail or the tack does not interfere with the inner peripheral side protruding portion (2a) of the washer (2).

[0008] The waterproof fastening member according to claim 2 of the present invention includes a ring-shaped washer (2) having an inner peripheral side protruding portion (2a) having an inner peripheral side protruding to one side, and a lower surface of the head. It is characterized by comprising a bolt (10) having a groove (10c) formed at a location corresponding to the inner peripheral side protrusion (2a) of the washer, a nut (11), and a ring-shaped rubber packing (3). And

[0009] According to this, even if the fastening is loose and a gap is generated between the head of the bolt (10) and the washer (2), the inner peripheral side protruding portion (2a) of the washer (2) is maintained. Because it catches rainwater, it is difficult for the rainwater to flow into the through holes. Further, since the groove (10c) is provided, the bolt does not interfere with the inner peripheral side protruding portion (2a) of the washer (2).

[0010] The waterproof fastening member according to claim 3 of the present invention includes a ring-shaped washer (2) having an inner peripheral side protruding portion (2a) having an inner peripheral side protruding to one side; A nut (20) having a recessed step (20a) formed on the inner periphery side to avoid interference with the inner peripheral projection (2a) of the washer (2); a bolt (21); It is characterized by being made of a ring-shaped rubber packing (3).

According to this, even if the fastening is loose and a gap is generated between the nut (20) and the washer (2), the inner peripheral side protruding portion (2a) of the washer (2) catches rainwater. Therefore, it is difficult for rainwater to flow into the through holes. Further, since the step portion (20a) is provided, the nut (20) does not interfere with the inner peripheral side protruding portion of the washer (2).

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below using preferred embodiments. Example 1 FIG. 1 is a cross-sectional view showing a state in which a roof material (A) is fastened to a roof base material (B) using the fastening member of the present example. The fastening member of the present embodiment includes a nail (1), a washer (2), and a ring-shaped rubber packing (3).

[0013] The washer (2) has a central through hole that protrudes toward one side to form an inner bent portion (2a). Although various methods can be considered as a method for manufacturing such a washer (2), the washer is generally manufactured by the following method.

First, through holes are formed at predetermined intervals in a strip-shaped metal plate as a material. Then, the periphery of each through-hole is bent to one side by a press having a convex portion having a diameter slightly larger than the diameter of the through-hole to protrude to form an inner peripheral side bent portion (2a). The diameter of the through hole of this press becomes larger, but the diameter of this through hole is finally made slightly larger than the diameter of the needle portion (1b) of the nail (1) used in combination.

The bending angle of the inner peripheral side bent portion (2a) is substantially perpendicular to the flat portion of the washer (2), but may be smaller or larger.

Next, a predetermined shape (usually a circular shape) is punched around the through hole. As a result, a washer (2) having a through hole in the center is completed.

On the lower surface of the head (1a) of the nail (1), when the needle portion (1b) of the nail (1) is passed through the through hole of the washer (2), the inner peripheral side bent portion ( A circular groove (1c) is provided at a location corresponding to 2a). That is, the circular groove (1c) is recessed by one step from the other part of the lower surface of the nail head.

In use, a nail (1) is driven so as to pass through the opening of the ring-shaped rubber packing (3) and the through hole of the washer (2). At this time, the inner peripheral bent portion (2a) of the washer (2) is directed toward the head of the nail (1).

When the nail (1) is driven, the inner peripheral bent portion (2a) of the washer (2) enters the circular groove (1c) on the lower surface of the head (1a) of the nail (1). Therefore, the nail (1) can be driven until the lower surface of the head (1a) comes into close contact with the upper surface of the flat portion of the washer (2) without being interfered by the inner bent portion (2a).

FIG. 2 is an enlarged sectional view showing a state in which the fastening of the fastening member according to the present embodiment is loose. As the nail (1) loosens over time, a gap is created between the lower surface of the nail head (1a) and the upper surface of the washer (2) as shown. Therefore, rainwater (C) enters the gap. However, since the inner peripheral bent portion (2a) protrudes upward, the rainwater (C) is stopped by the inner peripheral bent portion (2a) and does not reach the inside of the through hole. Therefore, it is possible to prevent rainwater (C) from entering the back surface of the roofing material (A) along the needle portion of the nail (1).

This embodiment is an embodiment using a nail (1), but the same effect can be obtained by a similar operation even with a rivet having a circular groove on the lower surface of the head.

Embodiment 2 Embodiment 1 uses nails, but this embodiment uses bolts (10) and nuts (11). FIG. 3 is a cross-sectional view showing a state where the roofing material (A) is fastened to the roof base material (B) using the fastening member of the present embodiment.

The same washer (2) as that used in the first embodiment is used. A circular groove (10c) is provided on the lower surface of the head (10A) of the bolt (10) so as not to interfere with the inner peripheral bent portion (2a) of the washer (2). In other words, the circular groove (10c) is one step lower than the other part of the lower surface of the bolt head.

At the time of mounting, a bolt (10) is inserted so as to pass through the opening of the ring-shaped rubber packing (3) and the through hole of the washer (2). At this time, the inner circumferential bent portion (2a) of the washer (2) is directed toward the head of the bolt (10).

The nut (11) is a normal nut, and is attached to a screw portion (10b) of a bolt (10) protruding toward the roof base material (B). Even if the bolt (10) and the nut (11) are tightened, the inner bent portion (2a) will go into the circular groove (10c), so the bolt (10) will not be bent. ) Can be tightened without interference.

Even if the fastening between the bolt (10) and the nut (11) is loosened over time and a gap is formed between the lower surface of the bolt head (10c) and the washer (2), Similarly, the inner bent portion (2a) catches rainwater (C) that has entered. Therefore, it is possible to prevent the rainwater (C) from entering the back surface of the roofing material (A) along the bolt holes.

Embodiment 3 FIG. 4 is a cross-sectional view showing a state where a roof material is fastened to a roof base material using the fastening member of the present embodiment.

The same washer (2) as that used in the first embodiment is used. In the second embodiment, the bolt head (10a) is in contact with the washer (2), but in this embodiment, the nut (20) is in contact with the washer (2). For this purpose, a step (20a) is provided on one side of the nut (20), which is recessed by one step from the other part on the inner circumference so as not to interfere with the inner bent part (2a) of the washer (2). It has been done.

The bolt (21a) has a lower part (roof base material (B) side), and a screw part (21b) protrudes from the upper surface of the roof material (A). Attach the rubber packing (3) and the washer (2) to the projecting screw portion (21b), and tighten the nut (20) from above. At this time, the inner peripheral bent portion (2a) of the washer (2) is directed to the nut side, and the nut is provided such that the surface on which the step (20a) is provided faces the washer (2) side.

When tightened, the upper surface of the washer (2) comes into contact with the lower surface of the nut (20). When tightened, the inner bent portion (2a) enters the inside of the step (20a), so that the inner bent portion (2a) does not hinder nut tightening.

FIG. 5 is an enlarged sectional view showing a state in which the fastening of the fastening member according to the third embodiment is loose. If the nut (20) loosens over time, a gap is formed between the upper surface of the washer (2) and the lower surface of the nut (20), and rainwater enters the gap.

However, as in the case of the first and second embodiments, the inner circumferential side bent portion (2a) catches the invading rainwater (C), and the rainwater (C) flows into the bolt holes. Along the roof material (A), it can be prevented from entering the back surface side.

[0033]

[Effect of the invention]

 As described above, the present invention can provide a highly waterproof fastening member having a structure in which rainwater or the like does not easily enter the fastening portion even if the fastening is loose.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a state in which the fastening member is used for fastening according to a first embodiment.

FIG. 2 is an enlarged sectional view showing a state in which the fastening of the fastening member according to the first embodiment is loose.

FIG. 3 is a cross-sectional view showing a state in which the fastening member is used for fastening according to the second embodiment.

FIG. 4 is a cross-sectional view showing a state in which a fastening member according to the third embodiment is used for fastening.

FIG. 5 is an enlarged sectional view showing a state in which the fastening of the fastening member according to the third embodiment is loosened.

FIG. 6 is a cross-sectional view showing a state where the conventional fastening member is used for fastening.

FIG. 7 is an enlarged sectional view showing a state in which the fastening of the conventional fastening member is loose.

[Explanation of symbols]

 (1) Nail (1a) Nail head (1b) Nail needle (1c) Circular groove on the bottom of nail head (2) Washer (2a) Inner circumferential bend of washer (3) Ring rubber packing ( 10) Bolt (10a) Bolt head (10b) Bolt thread (10c) Circular groove on bottom of bolt head (11) Nut (20) Nut (20a) Nut step (A) Roofing material (B) Roof base material (C) Rainwater (water drops)

Claims (3)

[Utility model registration claims] 1. A ring-shaped washer having an inner peripheral side protruding part whose inner peripheral side protrudes to one side, and a groove part on a lower surface of a head for avoiding interference with the inner peripheral side protruding part of the washer. A waterproof fastening member comprising a formed nail or stud and a ring-shaped rubber packing. 2. A ring-shaped washer having an inner peripheral side protruding part whose inner peripheral side protrudes to one side, and a groove is formed on a lower surface of the head at a position corresponding to the inner peripheral side protruding part of the washer. A waterproof fastening member comprising a bolt, a nut, and a ring-shaped rubber packing. 3. An interference between a ring-shaped washer having an inner peripheral side protruding part whose inner peripheral side protrudes to one side and an inner peripheral side protruding part of the washer on the inner peripheral side of one surface. A waterproof fastening member comprising: a nut having a stepped recess for forming one step; a bolt; and a ring-shaped rubber packing.