JP2573824Y2 - Anchor bolt driving rod - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving rod for driving an anchor bolt into a ceiling or the like of a concrete, and more particularly to a driving rod for inserting an anchor bolt into a hole for an anchor bolt.
The present invention relates to an anchor bolt driving rod excellent in practicability suitable for driving a tapered anchor ball in a bolt upward to firmly fix the bolt.

[0002]

2. Description of the Related Art An anchor bolt driving rod has a front end member of the front head applied to the inside of the anchor bolt, and a lower end of a long operation rod is driven into the ceiling with a hammer to drive a ball in the bolt. Is a tool that requires strength to push the bolt into the back and fix the bolt, and is usually used practically as an integrated member made of a steel material.

However, there are many types of anchor bolts,
The height of the ceiling is also various. Therefore, it is necessary to prepare and manufacture driving rods of all combinations of operation rods of various lengths and front heads having ball press-in rods of various thicknesses and lengths corresponding to respective bolts. It is extremely disadvantageous industrially to adapt to such buildings and structures, and it is also a problem in practical use.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a conventional anchor-bolt driving rod.
An object of the present invention is to provide a one-touch detachable driving rod which can be driven and fixed effectively and accurately to ceilings of various bolts and various heights. Another technical problem of the present invention is to provide a practically usable anchor bolt driving rod which has a sufficient strength as a driving rod body and is free from complications.

[0005]

Means for Solving the Problems The inventors of the present invention have repeatedly conducted trial production research focusing on the combination of an operating rod and a front head which solve the above-mentioned problems. As a result, the quick coupling system has excellent operability. Further, it has been found that a high anchor driving strength of the anchor bolt is guaranteed.

That is, the present invention relates to a driving rod for fixing an anchor bolt to a ceiling or the like of a concrete comprising a long operation rod and a front head, and a tip portion of the operation rod. A cylindrical portion for receiving the base portion of the front head, and a cover member urged outward by a spring toward the distal end side and capable of sliding slightly rearward are attached to the cylindrical portion in an engaging manner, and near the distal end of the cylindrical portion. A connection portion in which a plurality of steel balls are buried in a loose fitting manner is formed at a peripheral portion of the front head, and the steel balls are click-stopped on a cylindrical front head base inserted into the cylindrical portion. A receiving groove which is formed continuously over the entire circumference, and a press-fitting rod member for driving a tapered ball in an anchor bolt into the tip of the front head is integrally attached to the front head. Anchor - is intended to provide a bolt driving tool bar.

The anchor bolt driving rod according to the present invention has a technical feature in that the driving rod main body and the front head are separately formed as described above, and these are connected in a quick coupling shape. It was found as a result of conducting experimental trials and researches without being bound by the technical concept of firmly forming the rod body and the front head with emphasis on the driving strength.

The conventional long operating rod has a grip at the lower end, and a front head is integrally formed at the tip of the rod of a predetermined length. A fitting portion for fixing the front head is formed at the tip of the rod body. Steel rod bodies are usually 0.5m, 1m, 1.5m, 2m and 2.m.
5 m of various lengths are prepared practically, but the fitting parts formed at the tip are all made in the same mount, and in connection with this, the front head base of various press-fitting rod members It is formed in the same shape.

Further, as described above, the lower end of the front head is formed identically so as to be fitted to the fitting portion of the same rod body, and all the rod bodies and all the front heads are detachable. It is firmly connected to one. The cylindrical press-fitting rod member, which is slightly thinner than the main body formed at the front end of the front main body, is formed in various types corresponding to anchor bolts.

The press-fitting rod member at the front end of the front head is provided with a small cut in the length direction, and the elastic wire is made to slightly protrude from the surface of the rod member by using the cut to engage. For example, without inserting a bolt in advance in a hole for an anchor bolt, an anchor bolt is inserted into the press-fitting rod member with a wire and inserted into the hole,
Since it can be driven directly with a hammer, it is particularly advantageous for small anchor bolts.

[0011]

The anchor-bolt driving rod according to the present invention can be easily selected with a single touch by freely selecting a desired length of a long rod body and a front head having a desired anchor-ball driving press-in rod member. Can be combined with any driving condition, and has high strength and high operability.

The present invention will be described in more detail with reference to the accompanying drawings. FIG. 1 is a schematic partial cross-sectional view of an example of a combined and coupled anchor-bolt driving rod according to the present invention, in which a part of an example is omitted.

In FIG. 1 in which the operating cylindrical rod is shown in a sectional view and the front head is shown in a side view, a grip 2 for fitting the elongated operating cylindrical rod body 1 is provided at the lower end thereof. It is attached, and a front head fitting connection portion is formed at the tip of the rod body. The connecting portion is provided with a cylindrical portion 3 for receiving the base portion 8 of the front head and a cover member 5 urged outward by a spring 4 to be slightly slid rearward. Further, a plurality of steel balls 6 are buried in the peripheral portion near the distal end of the cylindrical portion 3 in a loose fit manner.

On the other hand, a receiving groove 9 in which the steel ball 6 fits in a click stop shape is continuously formed in the cylindrical base portion 8 of the front head 7 inserted and fitted in the cylindrical portion 3 over the entire circumference. A press-fitting rod member 10 for driving a tapered ball in an anchor bolt is integrally formed. A rubber packing 11 is fitted into the front end of the front head base immediately below the receiving groove 9 so as to prevent concrete powder or the like that falls during operation toward the ceiling from entering the fitting connection portion. I have.

When the front head base 8 is fitted into the connecting portion of the operating rod body 1, first, the cover member of the connecting portion is slid to the grip side with one hand, for example, a thumb, and the base is inserted into the cylindrical portion 3. Then, just open your thumb,
All the steel balls 6 are pushed inward by the inner surface of the cover member 5 and fitted into the receiving grooves 9 of the base 8, so that the front head is easily fixed, and the rod body 1 and the front head can be easily connected with one touch. Can be combined.

[0016]

According to the present invention, the anchor-bolt driving rod according to the present invention can be freely selected between an operating rod of a desired length and a front head having an anchor-driving press-fitting rod member suitable for the type of anchor bolt. Since it can be easily connected, it is particularly excellent in operability and practicality on site, and has extremely high industrial utility value.

[Brief description of the drawings]

FIG. 1 is a schematic partial cross-sectional view of an example of a combined and coupled anchor-bolt driving rod according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Operation cylinder main body 2 ... Grip 3 ... Cylindrical part 4 ... Spring 5 ... Cover member 6 ... Steel ball 7 ... Front head 8 ... Circle Column base 9 ... receiving groove 10 ... press-fit rod member 11 ... rubber packing

Claims (2)

(57) [Scope of request for utility model registration] 1. A driving rod for fixing an anchor bolt to a ceiling or the like of a concrete comprising a long operation rod and a front head, wherein a tip of the operation rod has A cylindrical portion for receiving the base of the front head, and a cover member urged outward by a spring toward the distal end and capable of sliding slightly rearward are attached to the cylindrical portion, and are attached to the peripheral portion near the distal end of the cylindrical portion. A connection portion in which a plurality of steel balls are buried in a loose fit shape is formed, and a receiving groove in which the steel balls fit into a click stop shape is formed in a column-shaped front head base inserted into the cylindrical portion in the front head. Is formed continuously over the entire circumference, and a press-fitting rod member for driving a tapered ball in an anchor bolt is integrally attached to the front end of the front head. rod. 2. An anchor-bolt press-fitting rod member at a front end of a front head is provided with a small cut in a length direction thereof, and an elastic wire is slightly protruded from a surface of the rod member to be engaged with the cut. 2. An anchor bolt driving rod according to 1.