JPH0827742A - Cap for anchor bolt - Google Patents

Abstract

PURPOSE:To fit different types and sizes of anchor bolts and improve fitting workability. CONSTITUTION:A cap consists of a cap mainbody 1 and a fitting member 2. The fitting member 2 is made of spring material, plural rising pieces 23 and plural fitting pawls 24 protruded slantly downward are provided on the periphery of a substrate 21 with a bolt insert hole and plural locking pawls 25 protruded slantly upward is provided at the edge of the bolt insert hole. The fitting member 2 is fitted into the cap mainbody 1, the rising pieces 23 are put, in contact with the inner face of the cap mainbody 1 and the fitting pawls 24 are put in press contact therewith. The cap mainbody 1 is pushed into the head of an anchor bolt 3 to be capped and the locking pawls 25 are locked to the screw 31 of a bolt 3.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Generally, the heads of anchor bolts for fixing various columns such as protection fence columns, lighting column columns, and marker columns installed on roads and bridges are projected while remaining exposed on the ground. If it is present, it will spoil the beauty of the landscape, so various caps are covered and covered.

Conventionally, as this kind of cap, for example, FIG.
As described above, the cap body 4 made of an elastic body has a shape along the head of the anchor bolt 3 and is forcedly fitted to the head of the anchor bolt 3 by utilizing its elasticity and fixed by the frictional force. There is something. Further, as shown in FIG. 4, there is one in which the screw portion 51 is screwed into the screw portion of the anchor bolt 3 because it is provided in the cap body 5. Furthermore, actual Kaihei 3
As described in JP-A-89724, there is a cap body fitted to a fitting plate piece of an attachment base material fixed by a nut of an anchor bolt head.

[0004]

However, both the one fixed by the frictional force shown in FIG. 3 and the one fixed by the screw shown in FIG. 4 require a special cap for each size of the anchor bolt. There is a problem that the cap cannot be applied to anchor bolts of multiple sizes.
Also, the one described in Japanese Utility Model Publication No. 3-89724 is
It is necessary to set the mounting base on the anchor bolt in advance before tightening the nut of the anchor bolt, and it cannot be attached to the anchor bolt after tightening the nut, and
In order to hit the cap body and fit it to the mounting base,
There is a problem that a construction space for tapping is required and the construction may be difficult.

An object of the present invention is to provide a cap for an anchor bolt that solves the above-mentioned conventional problems.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention uses an elastic force of the elastic member to accommodate and mount a mounting member having spring elasticity in the cap body, and further utilizes the elastic force of the mounting member. It is designed to be locked to the head of the anchor bolt. That is, the cap for an anchor bolt of the present invention includes a cap body that covers the head portion of the anchor bolt, and a mounting member that is fitted into the cap body and locked to the bolt screw portion, and the mounting member is made of a spring material, A plurality of upright pieces along the inner surface of the cap body are provided on the peripheral portion of the board having the bolt insertion holes, and a plurality of mounting claws pressed against the inner surface of the cap body are provided so as to project obliquely downward to form the hole edge of the bolt insertion hole. A plurality of locking claws that are locked to the bolt screw portion are provided obliquely upward on the portion.

[0007]

In operation, the mounting member is fitted into the cap body through the lower end opening of the cap body. At this time, the mounting member uses the standing piece as a guide, and the mounting claw protruding obliquely downward is fitted while being pressed against the inner surface of the cap body.
Further, the mounting claw is pressed against the inner surface of the cap body by its elastic force, and the mounting member is held at a predetermined position by the upright piece, and the mounting claw is provided so as to project obliquely downward. It becomes difficult to come off. When the cap body in which the mounting member is fitted in this way is pushed onto the head portion of the anchor bolt and is covered therewith, the locking claw of the mounting member is locked by the elastic force to the trough portion of the bolt screw portion.
Since the locking claws are provided to project obliquely upward, the locking claws can be easily locked to the bolt screw portion and are unlikely to be dislocated from the contrary.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 is a cap body, which is made of metal, synthetic resin, or the like, and is usually formed in a cylindrical shape with an opening at the bottom, but it may have another shape. The cap body 1 has a size sufficient to cover the head of the anchor bolt 3, that is, the anchor bolt 3, the nut 32, and the washer 33 as shown in FIG.

Reference numeral 2 is a mounting member, which is made of a spring material such as stainless steel or spring steel. This mounting member 2
As shown in FIG. 2, a plurality of upright pieces 23 are provided on the peripheral edge portion of the substrate 21 having a bolt insertion hole 22 in the central portion, and a plurality of mounting claws 24 are provided so as to project obliquely downward. A plurality of locking claws 25 are provided obliquely upward at the edge of the hole.

The substrate 21 has a diameter substantially equal to or slightly smaller than the inner diameter of the cap body 1, and the bolt insertion hole 22 is larger than the outer diameter of the anchor bolt 3. or,
The upright piece 23 is upright in a direction substantially perpendicular to the substrate 21, and as shown in FIG.
In this case, four pieces are provided at equal intervals in the circumferential direction of the substrate 21, but a plurality of pieces may be provided at appropriate intervals in the circumferential direction of the substrate 21. The length of the standing piece 23 is substantially equal to or smaller than the length of the cap body 1 minus the thickness of the nut 32 and the washer 33.

Further, the mounting claw 24 is the substrate 21 in the case of FIG.
The mounting members 2 are provided so as to project at four corners of the peripheral edge of the base member 2 to prevent the mounting member 2 from rotating in the cylindrical cap body 1. It suffices if a plurality of them are provided. Also, the locking claw 25 is
In the case of FIG. 2, four bolt insertion holes 22 are provided at the hole edge portion at equal intervals, but a plurality of holes may be provided at the hole edge portion at appropriate intervals. It is preferable that the tip portion of the locking claw 25 is formed into a concave curved surface as shown in FIG. 2A because it can be closely attached to the outer surface of the screw portion 31 of the anchor bolt 3.

When the anchor bolt cap of the present invention is used, the mounting member 2 is fitted and mounted in the cap body 1. That is, the mounting member 2 is fitted from the lower opening of the cap body 1 using the standing piece 23 as a guide. Then, the mounting claws 24 projecting obliquely downward are also fitted into the cap body 1 against the elastic force thereof, and are pressed against the inner surface of the cap body 1, and the mounting member 2 causes the mounting member 2 to move to a predetermined position inside the cap body 1 by the upright piece 23. Held in position.

When the head of the anchor bolt 3 is to be covered, the cap body 1 having the mounting member 2 fitted therein is attached.
Is forcibly pushed into the head of the anchor bolt 3. Then, the anchor bolt 3 is inserted into the bolt insertion hole 22 of the attachment member 2, and the locking claw 25 is elastically moved by the locking claw 25.
It is locked in the valley portion of the screw portion 31 of the.

[0014]

As described in detail above, the anchor bolt cap of the present invention comprises a plurality of locking claws which are locked to the bolt screw portion at the edge of the bolt insertion hole of the mounting member fitted in the cap body. Since the cap protrudes diagonally upward, when the cap body is pushed into the anchor bolt head, the elastic force of the locking pawls locks the troughs of the bolt threads, making the locking pawls easier. It is hard to come off, has good installation workability, and can be installed quickly.

Moreover, even if the size of the anchor bolt is changed, it can be easily attached and installed by the elastic force of the locking claw. Therefore, one type of cap can be applied to anchor bolts of multiple sizes.

Further, since a plurality of upright pieces are provided along the inner surface of the cap body at the peripheral edge of the base plate of the mounting member, and a plurality of mounting claws that are pressed against the inner surface of the cap body project obliquely downward. The mounting member can be easily fitted and mounted in the cap body, and the mounting member can be used as it is even if the shape of the cap body is changed.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of an anchor bolt cap of the present invention during use.

2 shows a mounting member of the cap of FIG.
(A) is a plan view, (B) is a front view, and (C) is a side view.

FIG. 3 is a partially cutaway front view showing an example of a conventional anchor bolt cap.

FIG. 4 is a partially cutaway front view showing another example of a conventional anchor bolt cap.

[Explanation of symbols]

 1 Cap Main Body 2 Mounting Member 21 Board 22 Bolt Insertion Hole 23 Standing Piece 24 Mounting Claw 25 Locking Claw 3 Anchor Bolt 31 Screw Part

Claims (1)

[Claims] 1. A cap main body for covering a head portion of an anchor bolt and a mounting member fitted into the cap main body and locked to a bolt screw portion. The mounting member is made of a spring material and has a bolt insertion hole. A plurality of upright pieces are provided along the inner surface of the cap body at the peripheral edge of the board, and a plurality of mounting claws that are pressed against the inner surface of the cap body are provided so as to project obliquely downward, and the bolt screw portion is formed at the edge of the bolt insertion hole. An anchor bolt cap in which a plurality of locking claws that are locked to are projecting obliquely upward.