JPS6237661Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a side handle attached to a portable power tool, such as a hammer drill or a grinder, in order to maintain the operating posture and balance during work, and to improve workability.

In the case of conventional side handles for power tools, for example, as disclosed in Japanese Patent Application Laid-open No. 119306/1983, the handle is attached to the attachment part of the tool body while being connected to an endless band. If an expanded part with an outer diameter greater than the outside diameter of this attachment part is adjacent to the attachment part, it is impossible to assemble the band over the expansion part and attach it to the attachment part while the band is connected. Not only does the installation work become extremely complicated, but even when the handle needs to be moved to a position that is easier to work with depending on the usage situation, the uneven shape of the installation part and the difference in outer diameter can cause the bundle to become difficult to install. There was a problem that the assembly position could not be changed.

The purpose of the present invention is to provide a side handle that solves the above problems, simplifies assembly to mounting parts of various shapes, and changes in assembly position, and also ensures stability of assembly. be.

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, 1 is a housing-like body containing a hammer drill drive mechanism (not shown), and in this example, it is formed into a cylindrical shape. A stepped portion 1a is formed in an expanded shape at the front end thereof, and
A front cap 2 is attached to the front surface of this stepped portion 1a.

3 is a drill fitted to the front cap 2;
Reference numeral 4 denotes a tool holder which is mounted on both sides of the front cap 2 in a U-shape.

Next, the side handle H of this example assembled near the front end of the body 1 will be explained. 5 is attached to the body 1 so that it can rotate in the circumferential direction and move in the direction of the body axis a. The hooking part 5a is a clamp band which is curved in an arc along the outer peripheral surface of the body part 1.
and both leg portions 5a and 5b extending parallel to the lower side of the hanging portion 5a as shown in the figure to form the open end 6 of the clamp band 5. Nearby, locking holes 7, 7 are opened facing each other in the shape of a horizontally long rectangle.

Reference numeral 8 designates a clamp base which is inserted between both legs 5b of the clamp band 5 and is brought into contact with the lower side surface of the body 1 as shown in the drawing, in order to clamp the body 1 between the hooking part 5a of the clamp band 5. It is formed into a side-shaped shape by a bottom plate 8a and side plates 8b, 8b projecting upward in the figure from the front and rear ends of the bottom plate 8a,
A through hole 9 is provided in the center of the bottom plate 8a, while
Arc-shaped curved edges 10, 10 along the outer circumferential surface of the body 1 are formed on the upper edges of the side plates 8a, respectively.

Reference numeral 11 denotes a clamp nut which is inserted into and removed from both the locking holes 7 of the clamp band 5, and which extends across the open end 6 of the clamp band 5 and straddles both legs 5b. A screw hole 11a is provided vertically in the drawing.

Reference numeral 12 denotes a handle shaft that abuts the bottom plate 8a of the clamp base 8 and is fastened to the clamp nut 11 in order to press the clamp band 5 and the clamp base 8 in opposite directions. A threaded portion 12 that passes through the through hole 9 of the base 8 and is screwed into the threaded hole 11a of the clamp nut 11.
A is provided protrudingly, and a grip cover 13 made of an elastic material and formed into a substantially cylindrical shape is fitted onto the outer periphery of the handle.
When the body 1 is rotated in the direction of screwing into the screw hole 11a, the hook 5 of the clamp band 5 is pressed against the body 1 by the clamp nut 11.
a and the curved edge 10 of the clamp base 8 which is pushed by the handle shaft 12 and pressed against the body 1, and the handle shaft 12 is held transversely to the body 1 at right angles to the body axis a. It is tightened in the extended state.

On the other hand, when the handle shaft 12 is screwed back in the opposite direction to the above, the clamp nut 11 is loosened and the clamped state is released.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in this example, the clamp band 5 to be attached to the body part 1 of a power tool is curved into a U-shape in order to hang from the body part 1 from the radial direction of the body part 1. 5 has a hook part 5a curved in an arc shape along the outer circumferential surface of the body part 1, and a pair of legs 5b extending in parallel. A clamp base 8 provided to abut a part of the outer circumferential surface of the body part 1 to clamp the body part 1 between it and the hook part 5a is inserted, and further, a side of the clamp base 8 opposite to the body part is inserted. The handle shaft 12 is fastened to the tip of the handle shaft 12 which is in contact with the end face, and is fastened to a clamp nut 11 which is removably straddled over both legs 5b, so that the clamp band 5 and the clamp base 8 are opposed to each other. A threaded portion 12 is threaded into the threaded hole 11a of the clamp nut 11 for pressing in the direction.
A is provided protrudingly.

Therefore, when assembling the side handle H to the body 1, one end of the clamp nut 11 is inserted obliquely into one of both locking holes 7 of the clamp band 5 hung on the body 1, and then the other end is inserted into the other end. Penetrates through the locking hole 7 of the clamp band 5 and straddles both legs 5b of the clamp band 5,
Furthermore, when the threaded portion 12a of the handle shaft 12 is screwed into the threaded hole 11a of the clamp nut 11 through the through hole 7 of the clamp band 5 attached to the body 1 on the side of the open end 6 of the clamp band 5, the side handle H can be easily assembled to the body part 1, and
By rotating the handle shaft 12, the clamp band 5 and clamp base 8 are clamped to and from the body 1, and the side handle H can be moved and adjusted in the direction of the body axis a, and the installation angle of the side handle H can be adjusted. Rotation can be adjusted.

In particular, the clamp band 5 is curved into a U-shape to form an open end 6, and the clamping means is connected to the body 1.
Since the clamp band 5 is detachably attached to the body part 1, even if the outer diameter of the body part 1 is locally expanded like the expanded part 1a, the clamp band 5 can be hung on the body part 1 from the radial direction of the body part 1. This has the effect of simplifying the work of assembling the side handle H to the body 1 and making it easier to assemble the side handle H to the body having an uneven outer shape.

In addition, since the clamping means is configured to encircle the body 1 and clamp it centripetally, the side handle H can be tightened to the body 1, thereby ensuring assembly stability. There is.

That is, in the present invention, a clamp band to be attached to the body of a power tool is curved into a U-shape in order to be hung from the radial direction of the body to the body, and the clamp band has a A hook portion curved in an arc shape along the outer circumferential surface of the body portion and a pair of legs extending in parallel are provided in succession, and the outer circumferential surface of the body portion is disposed between the two leg portions. A clamp base provided to abut on a part of the body and clamp the body between it and the hook is inserted, and a handle shaft abutted on the end surface of the clamp base on the side opposite to the body. A screw of the clamp nut is attached to the tip of the handle shaft in order to tighten the handle shaft to a clamp nut that is removably straddled over the two legs and press the clamp band and the clamp base in opposite directions. By providing a protruding screw portion that is threaded into the hole, it is easy to assemble to the body, and the stability of the assembly to the body can be ensured, so it can be used as a side handle for a portable power tool. This is an extremely practical idea.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a plan view of the main parts, Fig. 2 is a sectional view taken along the line X-X of Fig. 1, and Fig. 3 is an exploded perspective view of the side handle. It is a diagram. 1...Body part, 12...Handle axis, a...Body axis line, H...Side handle.

Claims (1)

[Scope of utility model registration request] A clamp band to be attached to the body of a power tool is curved into a U-shape in order to hang from the body from the radial direction of the body, and the clamp band has an outer periphery of the body. A hook portion curved in an arc shape along the surface and a pair of legs extending in parallel are provided in succession, and a portion of the outer circumferential surface of the body portion is provided between the two legs. A clamp base provided to clamp the trunk between the hook and the hook is inserted, and the tip of the handle shaft that is in contact with the end surface of the clamp base opposite to the trunk is fitted with this clamp base. The handle shaft is screwed into the threaded hole of the clamp nut in order to tighten the handle shaft to a clamp nut that is detachably straddled over the two legs and press the clamp band and the clamp base in opposite directions. A side handle for a portable power tool characterized by a protruding threaded portion.