JP2001317525A - Cap of anchor bolt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap of an anchor bolt that covers an anchor bolt head for fixing various columns such as a protective fence column, a floodlight column, and a sign column installed on a road and a bridge and can be certainly mounted to a various kinds of bolts with difference screw diameters without being affected by projecting state from a nut of the tip of the anchor bolt. SOLUTION: A plurality of mounting claws 22 are projected from the outer peripheral edges of a mounting member 2 formed smaller than the inner shaped of a cap body 1 and pressed onto the inner wall of the cap body 1. A plurality of pressure contact pieces 23 are projected slantingly upward and inward from the inner peripheral edges of the mounting member 2 formed larger than the outer shape of the nut 4 for the anchor bolt 3, and pressed onto the outer wall of the nut 4. The mounting member 2 is press contacted with near the lower part of the inner wall of the cap body 1 by a strong pressure contact force of the spring property of a substrate 21 of the mounting member 2 to be attached to the cap body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap for an anchor bolt that covers the head of the anchor bolt protruding above the ground.

[0002]

2. Description of the Related Art Conventionally, the heads of anchor bolts for fixing various types of columns such as protective fence columns, lighting columns, and sign columns installed on roads and bridges, etc., are projected when they are exposed on the ground. In order to impair the aesthetic appearance, a cap that covers the head is covered.

However, in the case of the above-mentioned conventional anchor bolt cap, for example, like a locking claw disclosed in Japanese Patent Application Laid-Open No. Hei 8-27742, the anchor bolt is locked to a screw of an anchor bolt by a mounting member inserted into the cap body. Since the locking claw is formed, the locking piece of the mounting member cannot be locked unless the tip of the anchor bolt projects to some extent above the nut screwed into the anchor bolt.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the conventional anchor bolt cap, and can securely attach the cap body even when the tip of the anchor bolt does not protrude much from the nut. The cap is provided.

[0005]

In other words, the cap of the anchor bolt of the present invention presses against the outer wall of a nut which is inserted into the cap body and covers the head of the anchor bolt and which is screwed to the anchor bolt. The mounting member is made of a springy substrate having an outer peripheral portion smaller than the inner shape of the cap body and an inner peripheral portion larger than the nut outer shape, and a plurality of mounting members are provided from the outer peripheral portion of the substrate. The claws protrude outward and are pressed against the inner wall of the cap body, and a plurality of pressure contact pieces are protruded obliquely upward and inward at the inner peripheral edge of the substrate so as to be pressed against the nut outer wall. It is characterized by the following. In this description, the terms “up” and “down” refer to the upper and lower positions when the cap of the anchor bolt and the mounting member for mounting are installed on a normal flat ground. Also make a description according to it.

[0006] In the cap of the anchor bolt of the present invention, a plurality of mounting claws projecting outward from the outer peripheral edge of the substrate are projected downward and outward. It is.

Alternatively, in the cap of the anchor bolt of the present invention, a plurality of mounting claws protruding outward from the outer peripheral edge of the substrate are cut out and raised upward from the substrate and then outwardly sharpened. It is characterized by being bent and protruded.

Further, in the cap of the anchor bolt of the present invention, a plurality of pressure contact pieces projecting upward and inward from the inner peripheral edge of the substrate are pressed against an outer wall of a nut used for a plurality of types of bolts having different screw diameters. It was made to be done.

Further, in the cap of the anchor bolt of the present invention, an abutting step is formed on the inner wall of the cap body, and the outer peripheral edge of the substrate abuts on the abutting step, so that the substrate is positioned at a predetermined position in the cap body. It was made to be supported by.

Further, the cap of the anchor bolt according to the present invention is such that the inner peripheral edge portion of the substrate is formed in a hexagonal shape, and the pressure contact pieces are protruded every other six sides.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The anchor bolt cap of the present invention will be described below in detail with reference to the drawings. In the drawings, 1 is a cap body of the present invention, 2 is a mounting member, 3 is an anchor bolt, and 4 is a nut screwed to the anchor bolt. FIGS. 1 and 2 are a combination view showing a member configuration of a first embodiment of the present invention and a partial cross-sectional side view.
Is a component diagram of the mounting member 2, and FIG. 4 is a combination diagram showing a member configuration of another example of the first embodiment of the present invention. 5 and 6 are a combination view and a partial cross-sectional side view showing a member configuration of a second embodiment of the present invention, and FIG. 7 is a component diagram of the mounting member 2.

The cap body 1 is made of a synthetic resin such as polyester, polycarbonate, or AAS resin, or a metal such as steel or aluminum. The cap body 1 has a cylindrical shape with its upper end closed, and the head of an anchor bolt 3 protruding above the ground. It is sized to cover the part. A locking step 11 is provided on the inner wall of the cap body 1.

The mounting member 2 is usually made of a metal plate body such as spring steel or stainless steel having a spring property. The mounting member 2 has a base having a substantially annular shape which is inserted into the cap body, and projects from the substrate 21. Mounting claw 22, pressure contact piece 23
Are formed.

The base plate 21 has a substantially circular outer peripheral portion smaller than the inner shape of the cap body 1 and an inner peripheral portion having a hexagonal hole larger than the outer shape of the nut 4 screwed to the anchor bolt 3. And a plurality of mounting claws 22 projecting from the outer peripheral edge of the substrate 21. This mounting claw 2
2 is projected downward from the substrate 21 in the example of the first embodiment (FIGS. 1 to 4), or cut upward from the substrate 21 in the example of the second embodiment (FIGS. 5 to 7). After being raised, it is bent outward and bent at an acute angle so as to be pressed against the inner wall of the cap body 1 so that the substrate 21 is supported at a predetermined position in the cap body 1 by the pressing force. It has been done. The adjustment of the pressing force is based on the premise that the substrate 21 is manufactured from a plate having an appropriate material and thickness, and the dimensional setting such as the rising angle of the mounting claw 22 and the width and length of the claw is performed. Alternatively, a notch 24 at the base of the mounting claw 22 of the substrate 21 is formed.

Further, a plurality of pressure contact pieces 23 are protruded from the inner peripheral edge of the substrate 21. The pressure-contacting piece 23 projects obliquely upward and inward from the substrate 21 and is pressed against the outer wall of the nut 4 screwed to the anchor bolt 3 so that the substrate 21 is pressed and supported on the outer wall of the nut 4 by the pressing force. Has been made. In order to adjust the pressure contact force of the pressure contact piece 23, the plate body having the appropriate material and thickness is used to adjust the upright angle, set the dimensions such as the width and length of the pressure contact piece 23, or
Notch 2 at the base of the pressure contact piece 23 projecting from the inner peripheral edge of
5 is formed.

The number, size, and arrangement of each of the mounting claws 22 and the pressure contact pieces 23 projecting from the base plate 21 of the mounting member 2 can be various embodiments. FIGS. 1 and 4 show a first embodiment example and FIG. 5 shows a second embodiment example of an application example to an anchor bolt of 20 or 22 mm, which is often used for the like.

In the first embodiment of the embodiment of the present invention shown in FIGS. 1 to 3, a press-contacting piece 23 is protruded at every six sides of a hexagon on the inner peripheral edge of the substrate 21. The mounting claws 22 protruding from the outer peripheral edge of the substrate 21 are designed not to be provided on the opposite sides of the press contact pieces 23, respectively, so that the press contact pieces 23 are set up by nuts for anchor bolts having different dimensions. Even when the plate body of the substrate 21 around the pressure contact piece 23 is deformed due to the change of the rising angle,
It is preferable that a stable mounting state is obtained without being affected by the mounting claws 22 on the outer peripheral edge located on the opposite side. further,
In the example of the present embodiment, three mounting claws 22 are provided at three locations substantially along the inner peripheral shape of the cap body 1, respectively, so that the mounting member 2 is securely fixed, and the mounting member 2 is inserted into the cap body 1. The fixation has been made more robust.

On the other hand, in a modified embodiment of the first embodiment of the present invention shown in FIG. 4, a pressing piece 23 protruding from the inner peripheral edge of the substrate 21 is replaced with the embodiment shown in FIG. Mounting claw 2 which is designed in the same manner as
By providing nine of them evenly, the attachment of the cap body 1 to the inner peripheral wall is stabilized and the cap body 1 is securely fixed. In both embodiments, the mounting claw 2
2. Notches 24 and 25 are provided at the roots of the pressing pieces 23 to adjust the pressing force of the pressing pieces 23.

Further, in the second embodiment of the present invention shown in FIGS. 5 to 7, a press-contacting piece 23 protrudes every other six sides of the hexagonal shape of the inner peripheral edge of the substrate 21 of the mounting member 2. The mounting claws 22 projecting from the outer peripheral edge of the substrate 21, which is on the opposite side of the other three sides of the hexagon, are cut and raised on the same upper side as the projecting side of the pressure contact piece 23 to form the rising portion 221. The attachment member 2 is bent outward at an acute angle to project a bent portion 222. The mounting member 2 is supported at a predetermined position in the cap body 1 by the pressure contact piece 23, and then a nut for an anchor bolt is formed. When the cap member 1 is pressed straight into the outer surface of the cap body 1, a force is applied so that the entire mounting member 2 bends, and the mounting claw 22 projects upward in the same direction as the pressure contact piece 23. Press more strongly against the inner peripheral wall To affect direction, the mounting member 2
Are firmly fixed to the outer surfaces of the cap body 1 and the nut 4.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an AAS resin is used as a cap body 1, and its dimensions are height 70mm, outer diameter 51mm, thickness 2mm.
mm. Also, 12 m from the open end of the cap body 1
In the back (upper part) from the position of m, twelve rows of vertical ridges 12 are formed substantially uniformly around the entire inner wall, and a contact step part 11 is provided. Since the height of the ridge 12 is 4 mm, and the top of the ridge is located on a concentric circle of 39 mmφ, and has a diameter smaller than the outer diameter 44 mm of an annular outer peripheral portion of the substrate 21 described later, When inserted into the main body, the annular outer peripheral edge of the substrate 21 is in contact with the contact step portion 11 of the cap body 1 and cannot move further any further. , The substrate 21 is supported at a predetermined position having a certain size from the opening end of the cap body 1. The cap body 1 does not have to be formed as a vertical protrusion as in the present embodiment, but may be provided with, for example, a protruding piece or a protrusion, or may be a protrusion that extends along a cross-sectional circumference. You may.

Next, a stainless steel SUS301 having a thickness of 0.6 mm and excellent in resilience and corrosion resistance is used as the mounting member 2, and as shown in FIG.
A plurality of mounting claws 22 project downwardly and outwardly from the outer peripheral edge of the base 21 as a base (three locations along the inner wall of the cap body 1 × three each in this embodiment), In addition, the inner peripheral portion is hexagonal (in this embodiment, one side is 19 mm).
The distance between the opposite sides of the hexagon is 33 mm, and the opposite side dimension 3 of the nut for 20, 22 mm to be used
0, 32 mm) and press-contacting pieces 23 are protruded on three sides of every other six sides.
Here, the mounting claw 22 and the pressure contact piece 23 projecting from the substrate 21 are respectively set at an angle of 45 degrees, their lengths are set to 3 to 8 mm as shown in FIG.
In order to ensure a wide adjustment range to accommodate a plurality of types of bolt nuts having different screw diameters,
A notch 25 was formed at the inner peripheral edge of the substrate 21 at the base of. Note that, when the pressing piece 23 is inserted into the nut and then subjected to a pull-out direction from the state of being attached to the cap body 1 with the mounting member 2, the tip of the pressing piece 23 bites into the outer wall of the nut. In order to work as a fall prevention, the shape of the pressure contact piece 23 was bent from the 45-degree rising angle from the substrate 21 to the further inner side by 15 degrees. Although the inner peripheral edge of the mounting member is hexagonal in this embodiment, the outer shape is designed to be as compact as possible by adopting a shape substantially along the hexagon of the nut covered by the cap. Although it is aimed at what can be done, the inner peripheral portion of the substrate is not necessarily hexagonal and can be applied without any problem.

Subsequently, the surface of the mounting member 2 opposite to the bent direction of the mounting claw 22 protruding from the substrate 21 is made substantially parallel to the opening end surface of the cap body 1 so that the opening end of the cap body 1 The substrate 21 is inserted into the cap body 1 while the tip of the mounting claw 22 is pressed against the inner wall of the cap body 1.
The cap body 1 is pushed firmly until it comes into contact with the contact step 11 provided by the ridge 12 formed on the inner wall of the cap body 1.
The mounting member 2 was supported and fixed at a predetermined position in the inside to obtain a cap body 1 with the mounting member 2. The position of the contact step 11 provided on the inner wall of the cap body 1 is determined by the position of each of the flat washer 41, the spring washer 42, and the mounting member 2 when the nut 4 is screwed into the anchor bolt 3 as shown in FIG. It is sufficient to consider a dimension obtained by adding a margin to the total thickness dimension, and in this embodiment, 12 m from the opening end of the cap body 1.
m.

In this manner, the assembled cap body 1 with the mounting member 2 is screwed to the anchor bolt from above the anchor bolt along the hexagonal shape of the inner peripheral edge of the substrate of the mounting member 2 so as to cover the opening. The cap body 1 was pushed straight into the nut, and the press-contacting piece 23 protruding from the inner peripheral edge of the substrate was pressed against the outer wall of the nut and pressed until the open end of the cap body 1 was in contact with the base surface from which the anchor bolt protruded. . Then, the cap of the anchor bolt that covers the head of the attached anchor bolt is pressed and fixed by a strong pressing force near the lower portion of the cap body, and is strongly pulled from the upper portion in order to pull out the cap body 1 with the mounting member 2, The tip of the pressure contact piece 23 pressed against the outer wall of the nut bites into the nut and could not be easily pulled out.

The above-mentioned cap body 1 was used to manufacture a mounting member 2 different from that of the above embodiment only in the form of the mounting claw 22. That is, a stainless steel SUS301 having a thickness of 0.6 mm and excellent in spring property and corrosion resistance is used as the mounting member 2, and the base 21 is formed on a substrate 21 having an outer peripheral dimension of 44 mm as shown in FIG. As shown in the drawing, the mounting claws 22 are attached to the mounting claw 22 from the outer peripheral edge at the same upper portion as the sides where the press-contacting pieces 23 protrude every other six sides of the hexagon of the inner peripheral edge. 3
The raised portion 221 is protruded from the outer peripheral edge of the substrate 21 on the opposite side of the side, and the cut and raised portion 221 is bent to a height of 6 mm and further outwardly by 45 degrees to bend the bent portion 222 by about 6 mm. As a result, it was installed and fixed in the same manner as above and evaluated, and the pressure-bonding force became even stronger,
The cap body 1 was strongly pulled from above in order to be pulled out. However, the more the tip of the pressure contact piece 23 pressed against the outer wall of the nut was cut and pulled, the stronger the resistance was applied, and the cap was not pulled out.

[0025]

As described in detail above, the cap of the anchor bolt of the present invention is provided on the cap body for covering the head of the anchor bolt, and on the outer wall of the nut inserted into the cap body and screwed to the anchor bolt. The mounting member is made of a springy substrate having an outer peripheral edge smaller than the inner shape of the cap body and an inner peripheral edge larger than the outer shape of the nut, and a plurality of mounting members are formed from the outer peripheral edge of the substrate. The claws protrude outward and are pressed against the inner wall of the cap body, and a plurality of pressure contact pieces are protruded obliquely upward and inward at the inner peripheral edge of the substrate so as to be pressed against the nut outer wall. And is pressed into contact with the outer wall of the nut screwed to the anchor bolt without being influenced by the degree of screw protrusion of the anchor bolt through a mounting member which is inserted and firmly fixed in the cap body. Because it is secured is by always secure attachment without being affected by the construction site conditions can obscure the anchor bolt head.

In the cap of the anchor bolt of the present invention, when a plurality of mounting claws projecting outward from the outer peripheral edge of the substrate of the mounting member are formed to project downward and outward, The tips of a plurality of mounting claws provided substantially along the inner peripheral shape of the cap main body bite into the inner peripheral side surface of the cap main body, so that the mounting member and the cap main body are united and difficult to separate, and on the outer wall of the nut It is preferable that the front end of the press-contacted piece that is pressed into the hole is securely fixed.

Further, in the cap of the anchor bolt of the present invention, a plurality of mounting claws projecting outward from the outer peripheral edge of the substrate of the mounting member are cut and raised upward from the substrate and outwardly. If the cap is bent and protruded at an acute angle, the more the force for pulling out the cap body is applied, the more the force is applied. Since the mounting member acts in a direction of pressing the peripheral wall more strongly, it is preferable that the mounting member is further firmly fixed to each of the outer surfaces of the cap body and the nut, and that the mounting member is firmly fixed.

In addition, the cap of the anchor bolt of the present invention is formed by a method in which a plurality of press-contacting pieces projecting inwardly upward from the inner peripheral edge of the substrate form cuts in the inner peripheral edge of the substrate at the base thereof. Since a wide adjustment range is ensured, even a nut used for a plurality of types of bolts having different screw diameters can be handled by one type of cap body with a mounting member, which is excellent in economy and convenience.

Further, in the cap of the anchor bolt of the present invention, when a contact step is formed on the inner wall of the cap body, the outer peripheral edge of the substrate of the mounting member to be inserted into the cap body is brought into contact with the contact step. It is sufficient to push it in until it is touched, the assembly is simple, and the substrate is supported at a predetermined position on the inner wall of the cap body, so that stable and reliable assembly and fixing can be performed.

Further, the cap of the anchor bolt according to the present invention can be formed by forming the combination portion substantially along the hexagon of the nut covered by the cap when the inner peripheral edge portion of the substrate is hexagonal. If it is possible to compactly design the outer shape as small as possible and it is preferable, and if the pressure contact pieces that are pressed and fixed to the nut screwed to the anchor bolt are protruded every other six sides, every other side to the nut The mounting member is stably fixed in a well-balanced manner, and the mounting member is capped on the side opposite to the inner peripheral edges of the other three sides where the pressing member of the substrate of the mounting member does not protrude, without being affected by the action of the pressing member. Since it is possible to provide mounting claws for fitting and fixing to the inner wall of the main body, it is preferable that the mounting member can be stably and surely fixed to the inner wall of the cap main body.

[Brief description of the drawings]

FIG. 1 is a plan view showing a combination of a cap body and a mounting member showing an example of an embodiment of a cap of an anchor bolt of the present invention.

FIG. 2 is a side view of a partial cross section taken along the line AA in FIG.

3 is a side view and a top view showing a mounting member used in the embodiment of FIG. 1;

FIG. 4 is a combined plan view of a mounting member showing another example of the embodiment of the cap of the anchor bolt of the present invention.

FIG. 5 is a combined plan view of a cap body and a mounting member showing still another example of the embodiment of the cap of the anchor bolt of the present invention.

FIG. 6 is a partial cross-sectional side view taken along the line AA of FIG. 5;

7 is a side view and a top view showing a mounting member used in the embodiment of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap main body 11 Contact step part 12 Projection 2 Mounting member 21 Substrate 22 Mounting claw 23 Pressure contact piece 24 Cut 25 Cut 3 Anchor bolt 4 Nut 41 Flat washer 42 Spring washer

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D064 AA11 AA22 DB01 2D101 CA06 CB05 FB02 2E142 AA01 AA03 JJ00 MM04

Claims (6)

[Claims] 1. A cap body for covering a head portion of an anchor bolt, and a mounting member inserted into the cap body and pressed against an outer wall of a nut screwed to the anchor bolt, and the mounting member has an outer peripheral edge. The inner part of the cap body is smaller than the inner shape of the cap body, and the inner periphery is larger than the outer shape of the nut. The inner wall of the cap body is formed by projecting a plurality of mounting claws outward from the outer periphery of the board. A plurality of pressure-contacting pieces projecting obliquely upward and inward from an inner peripheral edge portion of the substrate so as to be pressed against an outer wall of the nut. 2. A cap for an anchor bolt according to claim 1, wherein a plurality of mounting claws projecting outward from an outer peripheral edge of said substrate are projected downward and outward. 3. A plurality of mounting claws protruding outward from an outer peripheral edge of the substrate, being cut and raised upward from the substrate and bent outward at an acute angle. Item 2. An anchor bolt cap according to item 1. 4. A plurality of pressure contact pieces projecting upward and inward from an inner peripheral edge of the substrate are pressed against an outer wall of a nut used for a plurality of types of bolts having different screw diameters. 4. A cap for an anchor bolt according to claim 2, 2, or 3. 5. The cap body according to claim 1, wherein a contact step is formed on an inner wall of the cap body, an outer peripheral edge of the substrate is contacted with the contact step, and the substrate is supported at a predetermined position in the cap body. The cap of the anchor bolt according to 2, 3, or 4. 6. The substrate according to claim 1, wherein the inner peripheral portion of the substrate is formed in a hexagonal shape, and the press-contact pieces are protruded at every other six sides.
The cap of the anchor bolt according to any one of claims 5 to 5.