JPH01216112A - Setscrew, nut and screwing device - Google Patents

Abstract

PURPOSE:To facilitate the production and processing of setscrews by inserting and fixing spirally wound coil wire with a predetermined diameter, and thereby forming a male screw part. CONSTITUTION:A coil wire 5 is formed by spirally winding a coil triangle in section so as to form a diameter of (r). A male screw part 6 is formed by inserting and fixing the coil wire 5 into the outer periphery of a lever part 4 of a lever body 1. The coil wire 5 can be previously processed as a separated material from a main body so that the production and processing of a setscrew is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a novel stopper, nut, and screw hole device that can utilize coil wire as a screw material.

(Prior Art) Conventionally, threaded portions of commonly known metal bolts, nuts, etc. have been obtained by tapping.

In contrast to such metal bolts and nuts, bolts and nuts made of plastic are known, but the threaded portions of these are obtained by molding.

In any case, the threaded portions of conventional bolts and nuts are obtained by processing the main body material of the bolt or nut itself.

[Problem to be solved by the invention]

Since these conventional bolts and nuts are obtained by processing the metal or plastic main body material itself, they require processing means to form the threaded part, which poses the problem of not being able to provide them efficiently and inexpensively. there were. Also, the screw hole had the disadvantage that it could not be drilled into wood or the like.

(Means for Solving the Problems) This invention has been made by paying attention to the above points, and uses a coil wire material having a desired constant cross-sectional shape and spirally wound under a desired diameter. This set screw is characterized in that it is inserted and fixed into a rod to form a male threaded part, and the coil wire having the above structure is inserted and fixed into a through hole of a piece-shaped nut body of a desired shape to form a female threaded part. A screw hole device characterized in that the nut is formed by forming an internally threaded portion by inserting and fixing a coil wire having the above structure into a hole provided in a desired material r. Pertains to.

In other words, the present invention forms only the threaded portion with a member different from the main body, that is, a coil wire material that has been processed and formed into a coil shape in advance, and fixes this coil wire material in the rod or hole. First, it is an object of the present invention to provide a bolt, a nut, and a screw hole device that can form a male or female threaded portion in a material of your choice such as wood or ceramics.

(Function) Since the coil wire is a separate member separated from the main body and processed in advance, it can be efficiently produced by being inserted and fixed into the main body of various configurations.

Since the coil wire is fixed in the rod or hole with an adhesive or the like, it can be integrated and used as a lock for a desired bolt, nut, or screw hole.

If the coil wire material is processed with a hard material such as metal, the scope of use of screws can be expanded, such as by processing rods and holed materials with non-hard materials such as plastic and wood.

(Example) The present invention will be explained in detail below.

In each figure, 1 is a rod for a set screw, 2 is a head of this rod 1, and in FIGS. 1a and 2, a hexagonal nut part 2a is shown.
Further, FIG. 1b shows the minus screw portion 2b. Although not shown, it may be a Phillips screw portion, or an engaging recess may be provided so that a square driver can be engaged therewith. In short, any configuration may be used as long as the head 2 can be engaged with a driver of a desired shape and the rod 1 can be rotated. 3
is a narrow portion bored in the outer periphery of the rod portion 4 having a circular cross section of the rod 1, and is formed as a step portion cut inward from the outer periphery by a distance d, and has a radius r. Reference numeral 5 denotes a coil wire material obtained by spirally winding the cross-section of a triangular shape whose inner diameter is approximately r, and has a flat surface f on the inner side as shown in FIG.
The externally threaded portion 6 can be formed by the adjacent angular portions m, m, . . . with the triangular angular portion m facing outward.

Therefore, the height h of the chevron portion m of the coil wire 5 is formed to be equal to the length d of the stepped portion of the rod portion 4. That is, the male threaded portion 6 can be formed in the rod 1 by inserting the coil wire 5 into the narrowed portion 3 and fixing it with an adhesive or the like. First, the ends 7 such as the upper and lower ends or the lower ends of the coil wire material 5 are bent inward as shown in FIG. 5 can also be fixed more securely. (Not shown) Set screws A, A2 shown in FIGS. 1a and 1b can be obtained as the most standard configuration.

Next, Fig. 7 shows a wood screw A3 which is a modification of the set screw A2, in which the diameter of the narrow part 3 of the rod part 4a of the rod body 1 becomes narrower as it reaches the lower part, and is wound in a coil shape with large intervals. The male threaded portion 6 can be formed by inserting the coil wire 5a (see FIG. 8) and fixing it using an adhesive or the like.

This coil wire material 5a has a structure slightly different from that of the above embodiment in the spacing between adjacent wires, but basically has a flat surface f on the inside and a flat surface f on the outside as shown in FIG. A threaded portion 6 is formed with a triangular chevron portion m facing.

However, in the above-mentioned embodiments, the coil wire material 5
．． The inside of 5a is described as a flat surface f, but
If necessary, a chevron-shaped protrusion similar to the outside but with a lower height is formed so that this protrusion engages the rod 4 during screw action.
It may be made to bite into the narrow part 3 of. (Not shown) By the way, if the above-mentioned coil wire material 5.53 is a metal wire, for example, a long wire material with a round cross section is drawn and deformed using a processing machine such as a Turk's head, and the cross-sectional shape is changed. , for example, FIG. 12(a).

(b), (c), and (d), and the processed irregularly shaped wire rod is wound into a coil shape under the desired diameter to form a male thread as shown in Fig. 11 and Fig. 8. A coil wire rod of 5.58 mm can be obtained.

In the case of materials other than metal wires, such as ceramics and plastics, by making the nozzle shape during extrusion molding into the shape shown in Figs. Obtained by bending into a coil shape.

Further, FIG. 12 only shows a typical cross-sectional shape, and other desired cross-sectional shapes can be formed. In particular, in the case of the round shape shown in (d), since there is no flat surface, it is preferable to form the coil wire 5 with a slight interval between adjacent wires. Furthermore, as shown in FIGS. 6(b) and 7(c), a flat wire f is formed below a desired thickness e, and with this thickness e, a coil wire material suitable for a female thread, which will be described later, can be provided.

Next, other embodiments of the present invention will be described based on FIGS. 4, 5, and 6.

This embodiment relates to a so-called nut, in which a spirally wound coil wire 9 having a triangular cross section as shown in FIG.
Nut B fixed with adhesive and provided with female threaded portion 10
1 can be obtained.

Since the coil wire 9 forms the female threaded portion 10, the flat surface f is formed on the outside and the chevron portion m is formed on the inside, so that the shape is different from that of the male threaded portion 6. .

This coil wire 9 is shown in FIGS. 12(a) and 12(b).
, (c), and (d), and the material and processing method thereof are exactly the same as those for the male screw coil wire 5.

By the way, in FIG. 13, a stepped portion 11 is provided in the through hole 8 to make the hole diameter slightly larger, and the outer diameter is equal to this hole diameter.
A nut B2 is obtained by abutting and locking a flat surface f having a thickness e shown in FIGS. 12(b) and 12(0).

Therefore, in the nut B2 of this form, the stepped portion 11 locks the coil wire 9 and can avoid the possibility of the coil wire 9 falling off during tightening.

Further, an embodiment of the screw hole device of the present invention will be described with reference to FIG.

In this embodiment, the female threaded portion 10 shown in the previous embodiment is inserted into the hole 12 of a desired book, plastic plate, pillar, etc.
The hole 12 may be penetrated as shown in the figure or may not be penetrated. In the illustration, the diameter of the hole 12 is slightly enlarged by forming a step 13, so that the diameter of the hole 12 is slightly increased.
).

Coil wire material 9 with a flat shape and thickness f as shown in (C) etc. It is preferable to use That is, by making the thickness e and the depth of the stepped portion 13 substantially the same, it is possible to form the female threaded portion 10 with the chevron portion m protruding inside the hole 12.

Set screws A, A, A3 and nuts B shown in the above embodiments
, , B2 are the male threaded portions 6. and 9 of the coil wire material 5.9 each having a desired cross-sectional shape. Since it has the female threaded portion 10, normal screwing and tightening operations for bolts, nuts, etc. can be performed.

(Effects of the Invention) According to the present invention, each set screw, nut, screw hole structure, etc. can be obtained by simply inserting and fixing the coil wire material of another separate part as a male threaded part or a female threaded part. It is extremely simple, does not require the conventional tapping process, and can be used to form male or female threads using coiled wire in any hard material such as metal, plastic, or wood. Can be expanded.

Furthermore, since the cross-sectional shape of the coil wire can be freely set, set screws, nuts, etc. with different thread shapes can be provided.

The coil wire material itself can be made of various materials such as metal, ceramics, and plastic.

[Brief explanation of the drawing]

FIG. 1a is a partially cutaway side view of a set screw showing one embodiment of the present invention, FIG. 1b is a partially cutaway side view of a set screw showing another example of the present invention, and FIG. Figure 3a is an exploded side view of the figure, and Figure 3b is a top view showing one embodiment of the coil wire material.
The figure is a top view showing another example of the coil wire material, FIG. 4 is a vertical sectional side view showing one embodiment of the nut according to the present invention, FIG. 5 is a plan view, and FIG. 6 is an exploded state. Fig. 7 is a side view showing the set screw as a wood screw;
FIG. 8 is a side view of the coil wire rod same as above, and FIG. 9 is a vertical cross-sectional view of the main part showing one embodiment of the screw hole device according to the present invention.
Fig. 10 is an enlarged partially cut-away side view of the coil wire for female threads, Fig. 11 is an enlarged partially cut-away side view of the coil wire for male threads, and Figs. 12 (a), (b), (C). ,(d) is
FIG. 13 is a longitudinal sectional view showing another embodiment of the nut according to the present invention. 1, ------- Rod 2 ------- Head 3 - Narrow part 4 - Rod part 5 , 5 a , 9 Coil Wire rod 6
...... Male threaded part 7 - Nut body 8 ... Through hole 10 ... Female threaded part 11.13 ... Stepped part 12 -... ...Hole f...Flat surface m...Chevron part e---Thickness A+, A2, A3''...Set screw B,,B,--- ---Natsuto

Claims (3)

[Claims] (1) A set screw characterized in that a male threaded portion is formed by inserting and fixing a coil wire having a desired constant cross-sectional shape and spirally wound under a desired diameter into a rod. (2) A female threaded portion is formed by inserting and fixing a coil wire material having a desired constant cross-sectional shape and spirally wound under a desired diameter into a hole in a piece-shaped nut body having a desired shape. A nut characterized by comprising: (3) A female thread is formed by inserting and fixing a coil wire having a desired constant cross-sectional shape and spirally wound under a desired diameter into a hole provided in a desired material. A screw hole device characterized by: