JPH08257934A - Expanding-anchor driving tool - Google Patents

Abstract

PURPOSE: To provide a expanding-anchor driving tool for use at high places, which is suited to various types of driving heads and allows easily driving an expanding anchor regardless of the mounting height and the physique of the operator. CONSTITUTION: This expanding-anchor driving tool comprises a driving head 4 suited to a expanding anchor; a rod 5; a joint member 2 having a hole 22 at its first end into which the end of the rod is inserted and having a mounting hole 21 at its second end into which the end of the driving head 4 is fitted; and a holding member 3 formed of a spring plate having an arm 13 and a locking part 11 bent from the end of the arm and provided with a locking hole 12 through which the first end of the driving head 4 is passed. The locking part 11 of the holding member 3 is located in front of the end face of the joint member 2, the locking hole 12 is made to deviate from the center of the mounting hole 21 in the direction of spring restoration, and the first end of the arm 13 is attached to the joint member 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a post-expansion expansion anchor,
In particular, the present invention relates to an anchor driving tool used when driving an expanded anchor to be installed at a high place such as a ceiling that cannot be directly reached.

[0002]

2. Description of the Related Art An expansion sleeve with a plug inserted into the tip is inserted into an embedding hole drilled in concrete, and the base end of the expansion sleeve is tapped to expand the tip of the expansion sleeve with the plug. The structure that exerts the fixing force by making it, or by inserting the expansion sleeve into the embedding hole,
The expansion anchor of the post-construction that is constructed to exert the fixing force by tapping the plug inserted in the inner hole and expanding the tip of the expansion sleeve has been known for a long time, and is used for many buildings and structures. It is used.

When such an expansion anchor is installed at a high place such as a ceiling which is out of reach directly,
As shown in FIG. 5, a driving rod 51 having a joint portion 52 at its tip is used to attach a driving head 55 having a size matching the expansion anchor 60 to the joint portion 52 to drive the expansion anchor 60. It was done.

However, the driving rod 51 has a structure in which the driving head 55 is inserted into the mounting hole 56 of the joint portion 52 and is pressed by the screw 57 screwed in the radial direction so as not to come out. It is extremely troublesome to remove the driving head 55 on the spot. Therefore, substantially one driving head 55 is provided for one driving rod 51.
Is fixed, and only the expansion anchor 60 of a fixed type to which the driving head 55 fits can be driven. Further, in the case where the driving head 55 has a different model or the same model has greatly different dimensions,
In some cases, one type of mounting hole 56 may not be applicable, so several driving rods 51 having several types of mounting holes 56.
There was a problem that I had to prepare.

Further, since the joint portion 52 and the handle portion 54 are integrated via the rod portion 53, the driving rod 51 is provided.
The length was fixed, and it was not easy to use because it could not cope with the difference in ceiling height for each mounting position of the expansion anchor 60 and the difference in height of the worker.

[0006]

The problem to be solved by the present invention is that conventional hitting rods for high places can be used only when driving an expansion anchor of a fixed type and lack general versatility. We cannot cope with differences in height and worker height,
That is the point.

[0007]

SUMMARY OF THE INVENTION Therefore, according to the present invention, there is provided a driving head having a head adapted to the tapping point of the expansion anchor at its tip, a rod for allowing the driving head to reach far, and a base end. A joint member having an insertion hole into which the tip end portion of a rod is inserted, and a mounting hole into which the base end portion of the driving head is inserted into the tip end portion, and an engaging portion bent from the arm portion and the tip end thereof. And a holding member formed of a spring plate having a locking hole for inserting the base end portion of the driving head in the locking portion, and the holding member has the locking portion from the distal end surface of the joint member. Also located forward,
Further, the locking hole is eccentric from the center of the mounting hole in the spring restoring direction, and the base end portion of the arm portion is mounted on the joint member, which is the first means for solving the above problems.

Further, in addition to the first means, a holding member similar to the tip side is also attached to the base side, whereby the rod is firmly fixed and the driving tool becomes safe.

Further, the holding member may be further bent from the engaging portion to have a handle portion extending substantially parallel to the arm portion toward the base end direction with the joint member interposed therebetween, or the engaging portion and the tip end of the joint member. This is preferable because the distance between and can be adjusted.

[0010]

[Function] The locking portion is pressed down so that the center positions of the locking hole and the mounting hole coincide with each other, and the driving head adapted to the expansion anchor is inserted into the mounting hole from the base end side through the locking hole. After that, when the locking portion is released, the hole wall on one side of the locking hole is pressed against the outer side surface of the driving head by the restoring force of the spring, so that the locking wall does not come off or shift.

Next, in the insertion hole provided at the base end of the cylindrical body,
Insert the rod with a length that matches the installation position of the expansion anchor and the height of the worker, lift the anchor driving tool, press the tip of the driving head against the expansion anchor, and tap the base end surface of the rod. Expand the expansion anchor.

[0012]

EXAMPLE An example of the present invention will be described with reference to FIG.

The expansion anchor driving tool 1 of the present invention comprises a round bar-shaped joint member 2, a laterally U-shaped holding member 3, a driving head 4, and a driving head 4.
And a bar 5.

The joint member 2 is provided with a mounting hole 21 at its tip end for inserting the mounting portion 42 on the base end side of the driving head 4.
It is composed of a rod-shaped body 23 having an insertion hole 22 for inserting an arbitrary rod 5 in the base end portion, and a non-slip knurl 24 is provided in the central portion. The inner diameter of the mounting hole 21 is equal to or slightly larger than the outer diameter of the mounting portion 42 of the driving head 4, and the depth thereof is shorter than the length of the mounting portion 42. Insert hole 22
Needs a sufficient depth to lift it to the ceiling height and support it stably, and the inner diameter is not specified because an arbitrary rod 5 is inserted, but is about 10 to 15 mm.

The holding member 3 is formed by bending a thin and long spring plate into a horizontally long U-shape, and has an arm portion 13, an engaging portion 11 and a handle portion 14 in that order. Locking hole 12 having a diameter slightly larger than the outer diameter of the mounting portion 42 of
Is provided. Then, the base end of the arm 13 is fixed to the joint member 2 so that the locking portion 11 projects forward from the tip of the joint member 2. At this time, the center of the locking hole 12 is slightly shifted from the center of the mounting hole 21 toward the arm portion 13 so as to be fixed.

A method of fixing the holding member 3 is, for example, as shown in FIG. 2 on both sides of the base end portion of the arm portion 13 of the spring plate forming the holding member 3.
As shown in FIG. 2, the mounting portion 15 is formed so as to project,
Roll along the outer circumference of 3 and hold. At this time, a small diameter portion 25 having a diameter slightly smaller than the other portions by the width of the mounting portion 15 is provided in a part of the rod-shaped body 23, and the mounting portion 15 is provided therein.
If the holder is held, the mounting portion 15 does not have to be displaced. The distance between the locking portion 11 and the tip of the joint member 2 is shorter than the length of the mounting portion 42 of the driving head 4, and when the driving head 4 is inserted into the bottom of the mounting hole 21, the driving head 4 is inserted. Four
The head 41 is made to project a sufficient length forward of the locking portion 11.

The handle portion 14 moves the locking portion 11 in the direction in which the center of the locking hole 12 coincides with the center of the mounting hole 21 by pressing the front end portion toward the joint member 2, and It is easy to put on and take off, but it is not necessary to put it on.

The driving head 4 has a head 41 at the tip end, which is adapted to the tapping point of the expansion anchor 10.
What was conventionally used can be used.

The rod 5 may be of any material and shape as long as it has a length corresponding to the mounting position of the expansion anchor 10 and the height of the operator, strength and rigidity to withstand driving, and for example, an irregular shape. Existing ones, such as rebar, that are readily available at the work site can be used.

Next, the method of using this embodiment will be described with reference to FIG.
It will be described based on.

First, the handle portion 14 of the holding member 3 is pressed in the direction of the joint member 2 until the center of the locking hole 12 coincides with the center of the mounting hole 21, and the locking hole 12 and the mounting hole 2 are held.
1, the mounting portion 42 of the driving head 4 is inserted from the base end side until it reaches the bottom of the mounting hole 21.

When the handle portion 14 is released, the restoring force of the spring of the holding member 3 causes the engaging portion 11 to move in the direction in which the center of the mounting hole 21 and the center of the engaging hole 12 are displaced again.
Since the hole wall on the handle portion 14 side of the locking hole 12 is in pressure contact with the outer surface of the driving head 4, there is no rattling even if there is a gap between the mounting portion 42 and the mounting hole 21. The head 4 is firmly fixed to the joint member 2 so that it does not come off or shift.

On the other hand, in the insertion hole 22, a rod member 5 having a length corresponding to the mounting position of the expansion anchor 10 and the height of the operator, strength and rigidity to withstand driving, and the tip portion is inserted. The head 41 of the driving head 4 is pushed up against a predetermined position of the expansion anchor 10 and the proximal end surface of the rod 5 is tapped with a hammer or the like to expand the expansion anchor 10. As long as the thickness of the rod 5 is the same as or smaller than that of the insertion hole 22, any thickness can be used, and the insertion hole 22 is sufficient to support the rod 5 stably. Since it has a depth, it will not come off when the tip is placed on top.

FIG. 3 shows a different embodiment of the present invention, in which a holding member 6 similar to that on the distal end side is provided on the proximal end side of the joint member 2. The holding member 6 is formed by bending a thin and long spring plate into a horizontally long U-shape, and has an arm portion 33, a locking portion 31, and a handle portion 34 in that order.
Further, a locking hole 32 having substantially the same diameter as the insertion hole 22 is provided. Then, the locking portion 31 is projected rearward from the base end of the joint member 2 so that the base end of the arm portion 33 is connected to the joint member 2.
Fixed to. At this time, the center of the locking hole 32 is set to the insertion hole 22.
It is fixed by slightly shifting it from the center of the arm portion 33 toward the arm portion 33.

The holding member 6 may be fixed by, for example, projecting the attachment portions 35 on both sides of the tip end of the arm portion 33 of the spring plate forming the holding member 6, and mounting the attachment portions 35 along the outer peripheral surface of the rod-shaped body 23. Roll it up and hold it. At this time, if a small-diameter portion 26 having a diameter slightly smaller than that of the other portion by the width of the mounting portion 35 is provided in a part of the rod-shaped body 23 and the mounting portion 35 is held therein, the mounting portion 35 may be displaced. There is no. Locking part 31
The distance between and the base end of the joint member 2 is not specified.

The handle portion 34 moves the locking portion 31 in the direction in which the center of the locking hole 32 coincides with the center of the insertion hole 22 by pressing the tip end toward the joint member 2, and It is easy to put on and take off, but it is not necessary to put it on.

In this case, after the driving head 4 is mounted in the same manner as in the embodiment shown in FIG. 3, the handle portion 34 of the holding member 6 is attached so that the center of the locking hole 32 is the insertion hole 22. Press in the direction of the joint member 2 until it coincides with the center, and the locking hole 32 and the insertion hole 22 have a length corresponding to the mounting position of the expansion anchor 10 and the height of the worker, and strength and rigidity to withstand driving. Insert the tip of the provided bar 5 into the insertion hole 22
Insert until it reaches the bottom of.

When the handle portion 34 is released, the restoring force of the spring of the holding member 6 causes the engaging portion 31 to move in a direction in which the center of the insertion hole 22 and the center of the engaging hole 32 are displaced again.
Since the hole wall of the locking hole 32 on the handle portion 34 side is in pressure contact with the outer surface of the bar member 5, rattling is eliminated even if there is a gap between the bar member 5 and the insertion hole 22, and as a result, the bar member 5 Is firmly fixed to the joint member 2 and is prevented from slipping out or slipping off, thus providing a more stable and safe driving tool.

The holding member 3 and the holding member 6 are formed of an integral spring plate as shown in FIG.
Can be attached by rolling and hugging each of them along the outer peripheral surface of the rod-shaped body 23.

Further, as shown in FIG. 6, the joint member 2 is provided with several screw holes 27 at regular intervals in the axial direction, and the arm portion 1 is provided.
If the holding member 3 is fixed to the joint member 2 by screwing the hole 16 provided at the base end portion of 3 to any one of the screw holes 27, the locking portion 11 and the tip end of the joint member 2 can be fixed. The distance between and can be adjusted, and the driving head 4 having various shapes and lengths can be adapted.

[0031]

When the expansion anchor driving tool of the present invention is used,
Whether you are a worker of any size, or a ceiling of any height, you can easily and properly move the driving head to the far side by using rods that are suitable for the situation, and easily expand the anchor. Can be installed. And the bar is
Since deformed bars and the like that can be obtained at any work site can be used, the economical and distribution burden is small.

Since the driving head is fixed in front of the mounting hole by the holding member made of the spring plate so as not to come out,
Very easy to put on and take off. Therefore, by preparing several types of driving heads having the same size of the mounting portion and having the shape and size suitable for various expansion anchors, one joint member can easily cope with it. Moreover, even if the dimensions of the mounting portions are not exactly the same, they can be fixed by the spring force of the holding member, and are excellent in versatility.

Further, by providing a holding member also on the side where the bar is inserted, any bar can be firmly fixed,
Safer installation work is possible.

Furthermore, if the distance between the engaging portion at the tip of the holding member and the tip of the joint member can be adjusted, it is possible to adapt to a driving head having various shapes and lengths.

[Brief description of drawings]

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

2 is a development view of the holding member of FIG. 1. FIG.

FIG. 3 is a vertical cross-sectional view showing the usage state of FIG.

FIG. 4 is a perspective view showing another embodiment of the present invention.

FIG. 5 is a development view showing a different embodiment of the holding member of FIG.

FIG. 6 is a perspective view showing still another embodiment of the present invention.

FIG. 7 is a perspective view showing a conventional example.

[Explanation of symbols]

 1 Expanding anchor hammering tool 2 Joint member 3 Holding member 4 Driving head 5 Bar material 11 Locking part 12 Locking hole 13 Arm part 21 Mounting hole 22 Inserting hole 41 Head

Claims (4)

[Claims] 1. A driving head having a head adapted to a tapping point of an expansion anchor at a tip portion; a rod member for allowing the driving head to reach a distance; a tip end portion of the rod member being inserted at a base end portion. A joint member having an insertion hole to be fitted and a mounting hole into which a base end portion of the driving head is inserted and fitted at a tip end portion; an arm portion and a locking portion bent from a tip end thereof, and the locking A holding member formed of a spring plate provided with a locking hole through which a base end portion of the driving head is inserted, the holding member having the locking portion with respect to the tip end surface of the joint member. Positioned forward,
Further, the base end of the arm is attached to the joint member by eccentricizing the locking hole from the center of the attachment hole in the spring restoring direction; 2. A second spring plate having an arm portion and a locking portion bent from the tip thereof, and the locking portion having a locking hole through which the tip portion of an arbitrary bar member is inserted. The holding member, the holding member having the locking portion positioned rearward of the base end surface of the joint member, and the locking hole eccentric from the center of the insertion hole in the spring restoring direction. The expansion anchor driving tool according to claim 1, wherein a proximal end portion of the portion is attached to the joint member. 3. The holding member according to claim 1, further comprising a handle portion that is further bent from the locking portion and that extends toward the base end direction substantially parallel to the arm portion with the joint member interposed therebetween. Expanded anchor driving tool described. 4. The expansion anchor driving tool according to claim 1, wherein the distance between the locking portion of the holding member and the tip of the joint member can be adjusted.