KR910005241B1 - Buckling device - Google Patents

Abstract

The fasterning device employs a bolt having a shape enlarging in dia. toward the tip to basten an object to a column or wall using cut washers without the phisical strike or force. A divided washer and nut device for use in fastening an object with a bolt in unidirection consists of a hold string (50) and one or more divided washers (A,B,C,A',B',C',A",B",C") each of which has the maxmum width less than the diameter of a bolt hole (60') on a wall (60) so as to pass through the bolt hole (60'), whose diameter enlarging with depth to match the enlarging shank of the bolt. The divided washers are pushed forward to the enlarging tip by the nut (40) and the fastening object obeing tightened with the outer nut (20) in screwing.

Description

Fastening device with extension washer

1 is a perspective view of an embodiment of the present invention.

FIG. 2A is a front view and a partial cross-sectional view showing a state in which the expander of FIG. 1 begins to expand in an inclined protrusion. FIG.

2b is a front view and a partial cross-sectional view showing a state in which the expansion body is inserted and expanded to the middle of the inclined protrusion.

Figure 2c is a front view and a partial cross-sectional view showing a state in which the extension is fully inserted to expand and tightened the circular nut.

3A is a cross-sectional view taken along the line A-A of FIG. 2C.

3b is a sectional view taken along the line B-B in FIG. 2c.

3C is a cross sectional view taken along the line C-C in FIG. 2C.

FIG. 3D is a cross sectional view taken along the line D-D in FIG. 2C.

4 is another embodiment of the present invention, a front view and a partial cross-sectional view showing a state of complementing the gap caused by expansion.

5 is a front view and a partial cross-sectional view showing a state in which two extension protrusions protrude in one fastening device as another embodiment of the present invention.

Figure 6a is a front view and a partial cross-sectional view showing a state utilizing the inclined protrusion as a nut.

6B is a plan view showing a state in which the expander is expanded only to both sides.

The present invention relates to a device for fastening a bolt or nut to a column or a wall using a cutting washer, and in particular, to extend the cutting washer without applying a physical blow or force to the periphery of the insertion hole of a soft material such as wood. will be.

Introducing a conventional fastening device known to be used for the same purpose.

First, there is a buried nut (notification number 85-2051), which cuts the cutout into a narrow incline with the tip of the buried nut narrowly and the center cuts into a slanted shape. It is designed to be able to fasten arbitrary bolts by inserting the buried nut into the concrete wall hole by inclined protrusion opening the tip of the cylindrical buried nut as the movable tool proceeds. Next, the bolt for inserting concrete (Notice 72-19 No.) This is to integrate the ＂+＂ tube and the bolt, insert a conical pin into the tube, insert it into the groove of the wall and tap it from the outside so that the tube can be inserted and fastened.

These are caused by physically hitting from the outside to be made in the wall and inserted into the concrete wall, this hole is used to drill a hole of the same size as the outer diameter of the tube with a strong material.

Therefore, the concrete is under stress at all times, and this stress may cause the material to crack over time. Especially, if the material is not firm, such as wood, it is not enough to be caught even if it is broken or expanded. There is a problem with use.

If necessary, even if the fastening device is removed from the wall, it is difficult to completely remove it because it cannot reduce the area enlarged in the wall, and two or more inclined protrusions are formed on one shaft or the upper part is narrowed again like an egg. It is not possible to narrow the expansion part that was made in the stone wall along the inclined stone.

The fastening device having two or more inclined protrusions can increase the locking force and the frictional force in the longitudinal direction, which can be utilized for narrow walls, and the egg-like shape requires the compressive force and the tensile force at the same time. It's a very useful structure.

The larger the inclination angle of the inclined protrusion or the closer to the end of the protrusion, the greater the gap between the extension parts, and this gap becomes a blank area, which may weaken the tightening force.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a novel technology configuration for cutting an extension part longitudinally and laterally and connecting it up and down again and suffering to prevent a physical blow or force during fastening. The purpose of the present invention is to provide a fastening device, and to cut and reconnect the extension part so that the insertion hole and the fastening space can be easily inserted and expanded, but have a firm fastening force without fear of detachment of the extension part after the fastening.

As another purpose, by cutting the extension part and connecting it with the suffering part, it is possible to make the oblique protrusion close to the protrusion even if it is inclined to be widened and narrowed, so that two or more inclined protrusions can be fastened and the material is narrow In addition, it has a strong tightening force and also maximizes the locking force and frictional force by supplementing the gaps caused by the expansion with a separate expansion washer.

Another purpose is to provide a strong fastening force not only for steels such as concrete and stone, but also for soft materials such as wood and plastics, and if necessary, the fastening device can be completely removed from the wall. It is to be able to form a fastening space using a fastening device or its components without a separate cutting tool.

The main structural feature of the present invention is to form one or two or more fastening spaces that allow the space to be widened while penetrating the insertion hole in the wall without the fastening space and entering the inner or peripheral part of the insertion hole, thereby expanding the expansion portion of the tube. Having one or two or more extension bodies reconnected up and down while having one or two or more extension washers cut in one or two or more longitudinal and transverse directions, and having an inclined protrusion to open them in the fastening space With the shaft, insert the inclined protrusion into the fastening space and insert the extension into it so that the expansion washer can be inserted into the inclined area between the fastening space and the inclined protrusion, and prevent the inclined protrusion of the shaft from falling out. It is possible to fasten the spiral part of the inclined stone.

At this time, the expansion washer once entered between the fastening space and the inclined protrusion to act as a locking portion and the friction portion so as not to fall out of the inclined protrusion, and as the pull the shaft from the outside to resist the inclined protrusion with a locking force and friction.

In forming the fastening space in the wall, first, insert the hole, and then, using a cutting tool having a wide end, such as an angle cutter, is formed by moving to part or all of the periphery of the insertion hole, and having an egg shape or two or more protrusions. The cutter can form the same fastening space.

If the cutting tool is used to protrude, attach or wrap the cutting part on the inclined protrusion of the shaft, it does not need a separate cutting tool and can be usefully used. When the drilling part is formed on the lower surface, it can also serve as a drill. It is.

The parts of the fastening device that can serve as cutting tools can be in various forms such as square, trapezoidal, conical, egg, diamond, and two or more of them formed on one shaft and cut part of them. It can also be used to drill holes in the inclined bulge and to form a helix to use as a nut.

The extension body can be easily inserted between the fastening space and the inclined protrusion, such as a conventional anchor bolt or an extension part made of tubular nuts, and is cut in the longitudinal and transverse directions, and then bundled so as to be easily experienced. Cut it in the direction to form a washer and divide it in the longitudinal direction to be an extension washer, and make it into one or two or more bundles so that the extension washer is connected back to each other up and down for insertion from the outside.

If necessary, it is more convenient when inserted from the outside by reconnecting the expansion body to the cylindrical tube-shaped tube as one.

One way to have the affected part is to use a line such as a steel wire. One or two or more holes are drilled in the expansion washer or cylindrical tube in the upper and lower sides, and the upper and lower sides are penetrated. It is connected to each other to have a pain area, and when inserted between the fastening space and the inclined protrusion, it is inserted into the expansion without having to apply a large force while experiencing in the pain area in turn.

This line can be pulled outward so that it can be used to pull the extension outward.

Alternatively, there is a method of attaching or wrapping an extension washer on a thin steel plate or thin plate so that it can be experienced in the plate, and can also be used as a pain site by connecting to each other like a chain.

Of course, this method is possible as long as it can be easily experienced by forming a gutter on the inside and the outside of a thin and deep part of the expansion part of the tube, but there is a difficulty in actual production.

In the case where two or more inclined protrusions are formed in one shaft, the number of extension washers is increased to the end of the inclined protrusion to be expanded.

When inserting the extension between the fastening space and the inclined protrusion, the gap between the extension and the shading is increased as it goes to the end of the inclined protrusion, and when it is supplemented, the space is enlarged. The extension to complement the site is inserted and expanded, followed by the expansion for the rest of the site.

This extension can be used in one, but the small size leads to a very complicated structure. In addition, if there are two or more extension objects, the expansion of the expansion object is primarily enclosed on the inclined stone, and the expansion of the expansion object is secondly placed on the inclined stone, and the expansion force is closely adhered to the fastening space. Will be.

The inclined protrusion diameter of the shaft becomes larger or inconsistent as it reaches the end, so that the inner side of the extension washer that is in contact with it is enlarged, or the surface of the inclined protrusion has the same radius as the radius of curvature of the inner side of the extension washer. To be.

As the fastening space also enters the inside, the diameter becomes large or inconsistent, so it is preferable to enlarge the outer side of the enlarged washer that will be in close contact therewith.

Protruding the locking jaw or forming the trough on the outer surface of the inclined protrusion can be inserted in the correct division when inserting the extension, and the effect of making the inclined protrusion and the extension washer as one when tightening from the outside It is.

If necessary, the upper and lower parts of the expansion body are inclined to eliminate the gap due to the inclination angle when it is expanded in the fastening space, and the lower side can be useful for dismantling by forming a pulling line or trough in the cylindrical tube type tube. will be.

Axial rods can be used as a bolt by forming a spiral, or a hole can be drilled up and down in an inclined protrusion, and a spiral can be formed thereon to be utilized as a nut.

By inserting the extension into the shaft or inclined protrusion and tightening it with a circular nut, it is possible to prevent the extension from falling out of the insertion hole.

When the width of the wall is narrow, the extension body is extended only on both sides, and the fastening space is also formed by forming both sides of the insertion hole periphery, and when the two are fastened to the thin plate, the insertion hole is made as large as possible and inclined. If the angle of inclination of the stone is also increased, the depth can be tightened.

When removing the fastening device from the wall, in the reverse order of insertion, it can be easily removed by first pulling the extension from the outside and then pulling the shaft or the inclined protrusion.

Such a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a fastening device of the present invention, the wall 60 has an insertion hole 60 'and a fastening space 62 that is widened as it enters the inside, and has an inclined protrusion 12 widened toward the end thereof. Connect the extension washers (A, B, C), (A ', A', C '), (A', B ', C'), etc. to the spiral portion 11 of the shaft 10 with a string 50 The extension (30, 30 ', 30 ＂) and the cylindrical tube (M) connected thereto are attached, and the spiral portion of the shaft with the nut (20) together with the circular nut (40) and the structure (70) to be attached from the outside. 11) is tightened.

2a shows the state in which the inclined protrusion 12 of FIG. 1 is inserted to the end of the fastening space, and the expansion washers A, B, and C of the expansion body are inserted between the fastening space 62 while undergoing the inclined protrusion 12. will be.

At this time, drill two holes (A-1, A-2), (B-1, B-2) and (C-1, C-2) up and down in the expansion washer (A, B, C), and (50) is connected to the next expansion and the lamp, and the string (50) is a little longer it is good to make it easily suffered from the affected area.

In addition, it is preferable to form the same radius of curvature as the inner surface of the extension washer up and down on the inclined protrusion 12 such that the inclined protrusion 12 surface and the inner surfaces such as the extension washers A, B, and C are in close contact with each other. Accordingly, the end portion of the inclined protrusion 12 is in the form of a chrysanthemum.

FIG. 2B shows a state in which the expansion bodies 30, 30 ', 30' are inserted into the middle of the inclined protrusion 12 and expanded.

FIG. 2C shows a state in which the expansion bodies 30, 30 ', 30 ＂are fully inserted into the inclined protrusion 12 and the cylindrical tube M is tightened with the circular nut 40. As shown in FIG.

At this time, it is preferable to leave a portion of the extension washer of the expansion body not inserted into the inclined protrusion 12 so as to have an additional extension portion.

In addition, narrowing the space between the inclined protrusion 12 while entering into the fastening space 62 is such that the surface of the fastening space 62 and the outer surfaces such as the extension washers A, B, and C are in close contact with each other. This is because the radius of curvature of the side is increased to narrow the center of the expansion washer (A, B, C).

FIG. 3A is a cross-sectional view taken along the line A-A of FIG. 2C and shows a cross section of the cylindrical tube M. FIG.

Cylindrical tube (M) may be absent, but it is easy to insert from the outside by bundling the expansion body (30, 30 ', 30 ＂) and the like again.

Holes (A-1, A-2), (B-1, B-2), (C-1, C-2) and holes (M) of holes (M-1, M-2, M-3) , M-4, M-5, M-6 is perforated in the same position and connected to each other by penetrating the string 50, it is good to slightly lengthen so that the string 50 can be pulled out when dismantling from the outside.

FIG. 3B is a cross sectional view taken along the line BB of FIG. 2C, which is an extension washer (A '' ', B' '', C '' ') obtained by dividing the washer in three parts, and is preferably inclined in consideration of the inclination angle of the inclined protrusion 12. .

FIG. 3C is a cross-sectional view taken along the line C-C of FIG. 2C, showing that the radius of curvature is slightly increased so that the side of the expansion washer is in close contact with the fastening space 62. FIG.

FIG. 3D is a cross-sectional view of the DD line of FIG. 2C, which shows a state in which the extension washers A, B, and C on the upper part of the extension bodies 30, 30 ', 30' are largely spaced apart, and the blank area K is shown. If necessary, the extension (M ') can be added to compensate for the gap.

The cross section of the inclined protrusion 12 is in the shape of a chrysanthemum because the same radius of curvature is formed above and below the inclined protrusion 12 so as to form the same curvature radius as the inner circles of the extension washers A, B, and C. It is enlarged to be attached to the fastening space 62.

4 shows the state of supplementing the void portion K generated on the inclined protrusion 12 surface with two extension bodies, inserting the extension M 'first and then complementing the extension. Insert M) to expand as well.

The expansion body (M ') is made up of expansion washers (D, E, F) and the like.

5 shows two inclined protrusions 12 and 15 in one shaft, and the expansion washer is in close contact with the inclined portion 13 where the upper portion is narrowed.

FIG. 6a shows that the hole 16 is drilled up and down in the inclined protrusion 12, and the spiral portion 17 is formed thereon to be utilized as a nut.

6b shows that the fastening space is formed only on both sides of the insertion hole 60 'in the wall 60, and the extension is also expanded only on both sides.

In the above embodiment, the use and installation of the present invention will be described as follows.

First, as shown in FIG. 2, the cylindrical tube M, which is connected to the expansion body 30, 30 ', 30 ＂attached to the shaft 10 toward the insertion hole 60' of the wall, is held in the state of the shaft by hand. The inclined protrusion 12 is inserted into the fastening space 62, and then the cylindrical tube M is pushed into the insertion hole 60 'so that the extension washers A, B, C, etc. of the extension body are inclined protrusion 12. ) And the fastening space (62) in order to go through.

After completely inserting the cylindrical tube (M) into the insertion hole, tighten the shaft helix (11) with a circular nut (40) thereon, and expand the body to be in close contact with the inclined protrusion (12) to expand the shaft (10) to the outside. Do not let it fall into.

After that, the fastening is terminated by attaching the attachment structure 70 to the shaft 60 and tightening the nut 20 with the nut 20 on the outside of the wall 60.

The load due to the attachment structure 70 or the pulling force received from the outside are sequentially transmitted to the inclined protrusion 12 of the shaft and the extensions 30, 30 ', 30 ＂, and the extension washers (A, B, C) of the extension. The back acts as a locking part and a friction part on the surface of the fastening space 62 to resist the inclined protrusion 12.

This resistance force is a locking force and a frictional force. When the inclination angle of the inclined protrusion 12 is large, the action of the locking force becomes large, and even if the inclination angle is small, the frictional action becomes large when it is long in the longitudinal direction.

The void area caused by the expansion of the expansion body in the inclined protrusion causes the gap between the locking force and the frictional force, which reduces the tightening force. If you expand it, it will be complemented.

When it is necessary to remove the fastening device from the wall, the cylindrical pipe and the extension body (30, 30 ', 30 ＂) are first pulled out of the fastening space (62) by pulling the string (50) out of the cylindrical pipe (M). Next, by pulling the shaft 10 can be easily removed to the inclined protrusion (12).

The fastening device having the expansion washer of the present invention as described above, by fastening the washer without applying a physical blow, it is possible to easily fasten the bolt or nut only by forming a fastening space not only in steel but also in a soft material such as wood. It can be used for various applications, such as two or more inclined protrusions, which require both tensile and compressive forces at the same time, or can be fastened tightly in narrow places. If the fastening device or its parts have a cutting part, the cutting tool can serve as a cutting tool.

Claims (10)

In the device for inserting and tightening the expansion part into the insertion hole (60 ') by inserting and hitting an anchor bolt or a buried nut having a tubular expansion part in the insertion hole (60') of the wall 60, the insertion hole (60 ') The cut formed by cutting the wall 60 having the fastening space 62 extending into the inside and the expansion part of the tubular body that is held in close contact with the fastening space 62 in the longitudinal direction and then cutting it in the transverse direction again. A, A ', ..., A' ''), (B, B ', ..., B' ''), (C, C ', ..., C' '') An inclined protrusion 12 into the fastening space 62 having a plurality of extension bodies 30, 30 ', 30 ＂and an axial rod 10 having an inclined protrusion 12 having a wide end portion thereof; To the space between the fastening space 62 and in turn from the upper extension washers A, B, and C of each of the extensions 30, 30 ', 30 ＂to fill the space, and to the shaft outside the wall 60. (10) Tighten with thread and nut (20) Clamping device having expansion and one-Charles, characterized in that seodoen. (A, A ', ..., A' ''), (B, B ', ..., B' ''), (C, C ', ..., C' '') Fastening device having an expansion washer characterized in that the hole in turn in order to pass through the wire 50, such as steel wires to suffer from the wire. The method of claim 1, wherein the expansion washer (A, A ', ..., A' ''), (B, B ', ..., B' ''), (C, C ', ..., C' '') Attached to the thin plate in order to suffer from the thin plate, characterized in that the fastening device having an expansion washer. The method according to claim 1, wherein each of the expansion washers (A, A ', ..., A' ''), (B, B ', ..., B' ''), (C, C ', ..., C' '') Fastening device having an expansion washer, characterized in that the chain in order to suffer from the chain. The fastening device having an expansion washer according to claim 1, wherein a hole is formed above and below the inclined protrusion (12), and a screw portion (17) is formed thereon to be utilized as a nut. The fastening device having an expansion washer according to claim 1, wherein a plurality of inclined protrusions (12) and (15) are formed on the shaft bar (10). The cylindrical tube (M) of claim 1, wherein the lower extension washers A '' ', B' '', C '' 'of the extension bodies 30, 30', 30 'are inserted into the insertion hole 60. Fastening device having an expansion washer characterized in that the bundle by connecting. According to claim 1 having an extension washer (D, D ', ..., D' ''), (E, E ', ..., E' ''), (F, F ', ..., F' '') Fastening device having an extension washer characterized in that it is inserted into the space (k) generated between the inclined protrusion (12) surface and the fastening space 62 as a separate extension (M '). The method according to claim 2, wherein the expansion washer (A, A ', ..., A' ''), (B, B ', ..., B' ''), (C, C ', ..., C' '') and Fastening device having an expansion washer, characterized in that the connected string 50 is integral. The method according to claim 3, wherein the expansion washer (A, A ', ..., A' ''), (B, B ', ..., B' ''), (C, C ', ..., C' '') and A fastening device having an expansion washer, characterized in that the attached thin plate is integral.

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