JPH11241708A - Screw member, and fixing method for joining member using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize both of screw-joining of a member to be fastened by a screw member, and fixing a joining member to the member to be fastened. SOLUTION: A screw member 20 has a screw main body part 21 screw-joined into a member to be fastened, and a peak part 22 provided on the main body part 21; and the peak part 22 forms a taper shape having the sharpened tip and the gradually increased outer diameter toward the main body part 21, and has an engaging surface for engaging a rotary tool. A joining member can be fixed by the screw member by making the peak part 22 bite into the joining member under the screw-joined condition of the main body 21 into the member to be fastened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw member to be screwed to a member to be fastened, such as an iron plate or wood, and more particularly to a joining member such as a decorative plate on the surface of the member to which the screw member is screwed. The present invention relates to a screw member useful for fixing a screw.

[0002]

2. Description of the Related Art There are bolts for fastening a plurality of members including an iron plate to each other using screw members. There are various types of bolts such as hexagonal bolts, square bolts, countersunk bolts, etc. There are types. Whereas ordinary bolts are straight with the outside diameter of the screw body part being the same outside diameter, wood screws, which are screw members that are mainly screwed to wood, have a tapered body. ing.

Similarly, a tapping screw specified in JIS B 1007 is also called a tapping screw,
The tip of the screw body has a tapered shape. JIS B 11
Self-drilling tapping screw specified in 25
The tqpping screw) is also called a drill tapping screw, and has a tapered pointed tip or a cutting edge at the tip of the screw main body, and the screw member itself has a function of drilling and screwing.

These bolts, wood screws, tapping screws,
A screw member such as a drilling tapping screw usually has a screw main body portion and a head having a larger diameter than this, and when the screw member is screwed to the member to be fastened, the head protrudes from the surface thereof. become.

[0005]

Therefore, when various joining members such as decorative plates are superimposed on the surface of the member to be fastened, the head thereof becomes an obstacle. In a state where a screw member is screw-connected to a member to be fastened, there is a screw member having a flat head for preventing the head from protruding from the surface of the member to be fastened. The head of the screw member having a countersunk head has a trapezoidal cross section, and it is necessary to form a hole with a trapezoidal cross section corresponding to the countersunk head in the member to be fastened. A screw member with a countersunk head cannot be screw-connected to a thin plate material having no thickness.

SUMMARY OF THE INVENTION It is an object of the present invention to enable screw connection of a member to be fastened by a screw member and fixation of a joining member to the member to be fastened.

[0007] The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0008]

SUMMARY OF THE INVENTION Among the inventions disclosed in the present application, the outline of a representative one will be briefly described.
It is as follows.

That is, a screw member according to the present invention is provided integrally with a screw body portion which is screw-connected to a member to be fastened made of metal, wood, or the like, and is provided integrally with one end of the screw body portion. A tapered shape having an outer diameter that gradually increases toward the main body, and a pointed head having a meshing surface that engages with a rotary tool; and a state in which the screw main body is screwed to the member to be fastened. Thus, the pointed head is made to bite into the joining member. A stopper may be provided at a boundary between the pointed head and the screw body.

The method for fixing a joining member according to the present invention is characterized in that the screw body is screwed to a member to be fastened made of metal, wood or the like, and the screw body is provided integrally with one end of the screw body. A method of fixing a joining member, wherein the joining member is fixed to the member to be fastened using a screw member having a tapered point whose outer diameter gradually increases toward a screw body. Rotating the screw member using a rotary tool having a meshing hole corresponding to a meshing surface to screw-connect the screw body to the fastened portion; and the pointed head protruding from the surface of the fastened member. And pressing the joining member against the surface of the member to be fastened so as to bite into the joining member, and the joining member is fixed by the pointed head.

[0011] The rotary tool according to the present invention is provided with a screw main body which is screw-connected to a member to be fastened made of metal, wood, or the like; A rotary tool used when screwing a screw member having a tapered pointed head whose outer diameter gradually increases toward the member to be fastened, corresponding to a meshing surface of the pointed head. Having a tapered meshing hole, a fitting portion that fits into the pointed head, provided in the fitting portion,
A rotation operation unit configured to rotate the fitting unit.

In the present invention, after the screw connection is completed, the joining member may be fixed to the pointed head fitted to the rotary tool when the screw member is screw-connected to the member to be fastened by the screw body. Thus, the work of fixing the joining member to the member to be fastened can be performed quickly.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a view showing a state in which members to be fastened are screwed together using the screw member of the present invention, and FIG. 2 is an enlarged view of the screw member shown in FIG.

The members to be fastened shown in FIG. 1 are steel structure members 11 and 12 constituting a steel structure house. Each of the steel structure members is formed by bending a plate material having a thickness t of about 1.2 mm and having a cross section of U, for example. It is formed in a character shape. In FIG. 1, the horizontal steel structure member 11 constitutes a foundation in a house, the vertical steel structure member 12 constitutes a pillar or a stud, and the horizontal steel structure member 11 constitutes a concrete foundation 13. It will be screwed up.

These members to be fastened are mutually fastened by a screw member 20. When the screw members are shown enlarged,
As shown in FIG.

The screw member 20 has a screw body 21 having substantially the same outer diameter as a whole.
Is provided with a pointed head 22 at one end thereof. The tip 22 has a pointed tip, and has a tapered shape in which the outer diameter gradually increases from the tip toward the screw body 21. As shown in FIG. 2D in which one end of the screw member 20 is viewed from the axial direction, the pointed head 22 has a cross-shaped cross-section, and a cross-shaped engagement surface is formed. A flange-shaped stopper 23 having a diameter larger than the outer diameters of the screw main body 21 and the cusp is provided at a boundary between the screw main body 21 and the cusp 22.

The other end of the screw body 21 is provided with a cutting edge 24 for cutting the steel structural members 11 and 12 into a shape similar to a drill. Therefore, the portion of the screw main body 21 and the cutting edge 24 has the same structure as the drilling tapping screw.

The steel structural members 11 and 12 are fastened to each other using the screw member 20 shown in FIG.
A procedure for fixing the joining members 31 such as the finishing base member and the finishing surface member to the surfaces 1 and 12 will be described.

FIGS. 1A and 1B are views showing a state in which two steel structural members 11 and 12 are fastened by using a screw member 20. When the screw connecting step is completed as described above, The pointed head 22 of the screw member 20 is the steel structure member 11, 1
2 protrudes sharply from the surface. After the completion of the screw connection step, the joining members 3 are attached to the surfaces of the steel structural members 11 and 12.
Press 1. At the time of this pressing, a joining member 31 is used by using a driving member such as a hammer or a mallet.
You may make it apply an impact force to. By this pressing step, the joining member 31 is pressed against the surfaces of the steel structural members 11 and 12 as the members to be fastened, and the pointed head 22 of the screw member 20 bites into the joining member 31 and the screw member 2
With 0, the joining member 31 is fixed to the surfaces of the steel structural members 11 and 12. FIG. 1C shows the steel structural members 11 and 1.
2 shows a state in which the joining member 31 is fixed to the surface of No. 2.

As shown in FIGS. 1B and 1C, if the adhesive 32 is applied to the surfaces of the steel structural members 11 and 12 in advance, the sharp head 22 is cut into the joining member 31. The joining member 31 is temporarily stopped,
An operator does not hold down the joining member 31 until the adhesive 32 is hardened, and the joining member 31 is
Can be held in a temporarily stopped state. in this way,
By using the screw member 20, it is possible to achieve both the mutual fastening of the steel structural members 11, 12 as the members to be fastened and the fixing of the joining member 31 to the surfaces thereof.

As the joining member 31, a wooden plate member,
Any member such as a plywood, a gypsum board, a calcium silicate plate (silica plate), a flexible board, or the like can be used as long as the member can penetrate the tip 22.
Further, in addition to the plate-shaped member, a member such as a rod-shaped member or a columnar or beam-shaped member may be used as the joining member.

FIG. 3 is a view showing a rotary tool 40 used when the screw member 20 shown in FIG. 2 is screwed to the steel structural members 11 and 12 as members to be fastened. Is provided with a fitting portion 42, and a handle portion, that is, a rotation operation portion 43 is provided at the other end. The fitting portion 42 has a cross-shaped engagement hole 44 which is tapered as a whole corresponding to the cross-shaped engagement surface of the pointed head 22 of the screw member 20.

As shown in FIG. 2B, the screw member 20 has a length L ₁ of the screw body 21, a length L _{2 of the point} 22, and a length L ₂ of the cutting edge 24. ₃ and when the length L ₁ of the screw main body 21 can be of any length so as to correspond to the thickness of the fastened member. Length L of point 22
Reference numeral ₂ denotes a dimension smaller than the thickness according to the thickness of the joining member 31, and is set to a dimension enough to bite into the joining member 31.

Therefore, the length of the pointed head 22 can be set sufficiently longer than the head of a normal screw member, and as shown in FIG. When the point 22 indicated by a two-dot chain line is fitted to the point 44, the point 22 has a large area as a whole and comes into contact with the meshing hole 44, so that the surface pressure applied to the point 22 is The screw member 20 is reduced by using the rotary tool 40.
When the is rotated, it is possible to prevent the pointed head 22 from being deformed or damaged.

FIG. 4A is a modification of the screw member 20 shown in FIG. 2, and the screw member 20 is not provided with the stopper 23 described above. Other structures are the same as those shown in FIG.

FIG. 4B is a view showing another type of screw member 20. The screw main body 21 of this screw member 20 is tapered as a whole unlike the case shown in FIG. I have. As with the wood screw, this type of screw member 20 is also useful when wood is used as a member to be fastened.

FIG. 4C is a view showing still another type of the screw member 20. The screw main body 2 of the screw member 20 is shown in FIG.
1 has a tapered portion 25 formed at an end thereof, and the screw body 21 has a structure similar to a tapping screw.

FIG. 5 is a view showing various shapes of the engagement surface of the pointed head 22. In the case shown in FIG. 2, the pointed head 22 of FIG. 120 in the direction
As shown in FIG.
The pointed head 22 shown in (B) has a star shape. The pointed head 22 shown in FIG. 5C has a quadrangular pyramid shape.
The pointed head 22 shown in FIG. 5D has a hexagonal pyramid shape. As described above, the shape of the meshing surface of the pointed head 22 is not limited to the conical shape, and may be any shape as long as the shape engages with the meshing surface of the rotary tool.

As described above, the screw member 20 of the present invention has a pointed tip 22 having a sharp tip.
Has a meshing surface that meshes with the rotary tool 40, so that the screw member 20 can be screw-coupled to the member to be fastened using the pointed head 22, and the joining member 31 is attached to the surface of the member to be fastened. At the time of fixing, the pointed head 22 can be cut into the joining member 31 and fixed and held.

FIG. 6 is a comparative view. When a member to be fastened is fastened using a conventional screw member, the joining member is tightly fastened by the head of the screw member protruding from the surface of the member to be fastened. Although the gap cannot be fixed to the surface of the member and a gap is generated between the member to be fastened and the joining member, such a problem can be solved by using the screw member of the present invention.

Although the invention made by the inventor has been specifically described based on the embodiment, the invention is not limited to the above-described embodiment, and can be variously modified without departing from the gist of the invention. Needless to say, there is.

[0033]

Advantageous effects obtained by typical ones of the inventions disclosed in the present application will be briefly described.
It is as follows.

(1) The fastening of the member to be fastened and the fixing of the joining member to this can be achieved using the screw member.

(2) Since the joining member can be fixed with the pointed head of the screw member, the joining member is fixed to the member to be fastened using an adhesive, or another member such as a nail is used. In the case of fixing the joint member, the joint member can be temporarily fixed with the screw member, and the fixing work of the joint member can be easily performed.

(3) Since the screw member is rotated by using a rotary tool having a meshing hole into which the pointed head enters, a sufficient contact area between the pointed head and the meshing hole can be secured. When the screw member is rotated, the pointed head is prevented from being damaged or deformed.

[Brief description of the drawings]

1A is a perspective view showing a member to be fastened by a screw member, FIG. 1B is a cross-sectional view of FIG. 1A, and FIG. 1C is joined to the surface of the member to be fastened; It is sectional drawing which shows the state which fixed the member.

2A is an enlarged perspective view showing the screw member shown in FIG. 1, FIG. 2B is a front view of FIG. 2A, and FIG. 2C is a view from the 2C direction in FIG. It is a side view seen,
(D) is a side view as seen from the 2D direction in FIG. (B).

FIG. 3A is a perspective view showing a rotary tool, and FIG.
FIG. 3 is an enlarged sectional view showing a fitting portion of the rotary tool.

FIGS. 4A to 4C are front views showing other types of screw members.

5 (A) to 5 (D) are side views showing engagement surfaces of other types of cusps.

FIG. 6 is a sectional view showing a comparative diagram.

[Explanation of symbols]

 11, 12 Steel structure member (member to be fastened) 13 Foundation 20 Screw member 21 Screw body part 22 Pointed head 23 Stopper 24 Cutting edge 25 Tapered part 31 Joining member 32 Adhesive 40 Rotary tool 41 Rod part 42 Fitting part 43 Rotation Operation part 44 Meshing hole

Claims (5)

[Claims] 1. A screw main body which is screw-connected to a member to be fastened made of metal, wood, or the like, and is provided integrally with one end of the screw main body, and has a sharp tip and an outer diameter toward the screw main body. Has a pointed head having a mating surface that engages with a rotating tool, and the pointed head is screwed with the screw main body part being screwed to the member to be fastened. Characterized in that the screw member is made to bite into the joining member. 2. The screw member according to claim 1, wherein a boundary between the screw main body and the cusp has a diameter larger than the outer diameters of the screw main body and the cusp. A screw member having a stopper that contacts a surface of the member. 3. A screw main body, which is screw-connected to a member to be fastened made of metal, wood, or the like, and is provided integrally with one end of the screw main body, and has a sharp tip and an outer diameter toward the screw main body. Is a method of fixing a joining member to a member to be fastened using a screw member having a tapered pointed head that gradually increases in size, wherein a mating hole corresponding to a mating surface of the pointed head is formed. Rotating the screw member by using a rotating tool having the screw body to screw the screw body to the fastened portion; and causing the sharp head projecting from the surface of the fastened member to bite into the joining member. Pressing the joining member against the surface of the member to be fastened, wherein the joining member is fixed by the pointed head. 4. The screw member according to claim 1, wherein a cutting edge for threading a member to be fastened is provided at the other end of the screw body. Element. 5. A screw main body which is screw-connected to a member to be fastened made of metal, wood, or the like, and is provided integrally with one end of the screw main body, and has a pointed outer diameter toward the screw main body. A screw member having a tapered pointed head whose diameter gradually increases is used for screw-connecting the screw member to the member to be fastened, wherein the tapered engagement hole corresponding to the engagement surface of the pointed head is provided. And a rotary tool provided on the fitting portion and rotating the fitting portion.