JPS5822404Y2 - Fastening device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fastening tool used, for example, to fasten a plate or the like to a suitable base material.

Conventionally, when attaching base materials with nails, the nails are driven from the board to the base material, but at this time, a reaction force against the pressing force (attachment force) of the board to the base material acts on the nails. .

On the other hand, the needle is subjected to a frictional force with the plate material and the base material, and therefore, if this frictional force is larger than the reaction force to the pressure contact force, the pressure contact of the plate material to the base material will not loosen.

However, if the material of the base material and the plate material is dense and hard, the frictional force is large, but if the material is coarse and soft, the frictional force becomes smaller than the reaction force, and the frictional force becomes smaller than the reaction force, and In other words, when the plate material is properly fixed to the base material with nails, the contact force of this plate material to the base material is determined by the material of the base material and the plate material, and the contact force of this plate material to the base material It was not possible to freely increase the pressure welding force.

However, the present invention was devised with attention to the above-mentioned problems, and its purpose is to fix the plate material to a base material as appropriate, even if the material of the base material and the plate material is rough and soft. To provide a fastening tool that can increase the pressing force of a plate material to a base material and can reliably press (fasten) the plate material to the base material without fear of inadvertent loosening.

Hereinafter, embodiments of the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes a fastener main body formed of a flat strip-like member, and a notch 4 at one end in the length direction of the main body 1.
4 to form a flat and sharp protruding part 2, and at the other end, a striking part 3 which can be bent at an acute angle with respect to the main body 1 is formed. The positions of both sides in the width direction are tilted outward in the thickness direction of the piercing part 2 with respect to the flat surface of the piercing part 2, and the amount of deviation is changed from the lower end to the upper end of the main body 1. The main body 1 is made elastically deformable so as to be flush with the flat surface of the piercing portion 2, and the striking portion 3 is also elastically deformable so as to be perpendicular to the main body 1. That is.

In addition, in the present invention, a strip-shaped main body 1 having a dogleg-shaped cross section, a flat and sharp protruding portion 2, a striking portion 3, and notches 4, 4 are formed all at once from a flat strip-shaped spring steel using a press machine. Moreover, it is highly desirable to harden the protrusion 2 after this processing to increase its hardness.

Further, the positions of both sides of the main body 1 in the width direction are inclined outwardly in the length direction of the piercing part 2 in the same direction. They may be tilted in different directions.

However, when fixing the plate material B to the base material A appropriately using the fastening tool having the structure as described above, first, the piercing part 2 is aimed at the plate material B and the striking part 3 is struck, and this piercing part 2 is attached to the plate material B. It is driven from B into the base material A, and at this time, in the through holes and a in the plate material B and the base material A after the piercing part 2 has passed,
The main body 1 is elastically deformed to become flat, and the inner surface of the main body 1 in the bending direction strongly bites into the base material A and the plate material B due to its elastic restoring force, and the main body 1 is attached to the base material A and the plate material B. This increases the frictional force.

On the other hand, when the main body 1 is completely driven into the plate material B, the striking portion 3 is elastically deformed so as to be approximately perpendicular to the main body 1, and due to its elastic restoring force, the plate material B is pushed into the base material A. They are pressed firmly against each other.

As described above, the present invention includes a fastening body formed of an elastically deformable band plate-like member, a flat and sharp protrusion integrally formed at the lower end of the body in the longitudinal direction, and It consists of a striking part whose upper end is bent at an acute angle with respect to the main body, and the position of both sides in the width direction from the lower end of the main body to the upper end is the thickness of the piercing part with respect to the flat surface of the piercing part. while increasing the amount of deviation from the lower end of the main body toward the upper end, and elastically deforming the fastening main body by driving the fastening tool into the base material and the plate material. Because the elastic deformation forces the inner surface of the fastening body in the bending direction to bite into the base material and plate material, when the fastening tool is driven in, the main body is elastically deformed to become flat. However, due to the restoring force due to the elastic deformation of this fastening body,
The inner surface of the fastening body in the bending direction will strongly bite into the plate material and the base material, and the plate material can be fixed to the base material extremely reliably. When the hammer is completely hammered into the body, the striking portion is elastically deformed so as to be approximately perpendicular to the main body, and its elastic restoring force causes the plate material to come into strong pressure contact with the base material. This makes it possible to make the attachment even more reliable.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view thereof, FIG. 2 is a rear view thereof, and FIG. 3 is a view of FIG. 1 III-III.
4 is a sectional view taken along the line IV--IV in FIG. 1, FIG. 5 is a sectional view taken along the line ■--■ in FIG. 1, and FIG. 6 is a longitudinal sectional view showing the state of use. 1... Fastener main body, 2... Pierce part, 3
....beating club.

Claims (1)

[Scope of utility model registration request] This is a fastening tool for fastening a board or the like to a base material, and includes a fastening main body formed of an elastically deformable band plate-like member, and a flat, sharp point integrally formed at the lower end in the length direction of the main body. It consists of a piercing part and a striking part formed by bending the upper end in the longitudinal direction of the main body at an acute angle with respect to the main body, and the positions of both sides in the width direction from the lower end to the upper end of the main body are The base material of the fixing device and A fastening device characterized in that the fastening body is elastically deformed by being driven into the plate material, and the elastic deformation forces the inner surface of the fastening body in the bending direction to bite into the base material and the plate material.