JPH0346037Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention is a drilling machine in which the upper end of a spiral drill is connected to the lower end of a vertical rotating shaft rotated by the drive of a prime mover. This is related to.

(b) Prior art and problems to be solved Conventionally, in this type of drilling machine, as shown in Fig. 2, a side handle is provided horizontally on one side of a frame-shaped support supporting the prime mover; A grip is provided on the support on the opposite side of the handle, and the operator holds the side handle and the grip on the support while drilling a hole in the ground with a rotating drill. Since this side handle and grip are located on the side of the prime mover, it is impossible to grasp and lift it with one hand when moving it, and it is necessary to always lift it with both hands in an unnatural posture, making it difficult to move. It wasn't easy.

(c) Means and effects for solving the problem The present invention provides a support that supports the prime mover with both sides of an upper handle that passes directly above the prime mover fixed to opposite positions of the annular support. The upper handle can be grasped with one hand to facilitate movement.

(d) Embodiment Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, numeral 1 indicates a hole-drilling machine, which is constructed as follows. That is, 3 is a prime mover (engine) fixed in a rod-shaped support 5 formed in a horizontal ring shape surrounding the surroundings, 7 is a crankcase, 9 is a cylinder cover that covers a cylinder (not shown), 11 is the muffler cover,
13 is a fuel tank. 15, 15 is the support body 5
on the support 5, with a horizontal handle for holding the
are provided horizontally in opposite lateral positions. 17
passes directly above the prime mover 1 and connects both ends to the support 5.
Fix the upper handle in the opposite position. 19
is a gear case that is fixed to crankcase 7,
A rotating shaft 21 is vertically supported below.
A drill 23 is connected to the rotating shaft 21 via an intermediate shaft 25, and around the drill shaft 27, a spiral plate 31 with a blade 29 at the lower end is provided.
is rotated via a gear (not shown) in the gear case 19. A cylindrical body 33 is fixed to the upper end of the intermediate shaft 25, into which the lower end of the rotary shaft 21 is fitted, and is locked to the rotary shaft 21 by a bolt 35 passing through it in the horizontal direction. 37 is drill shaft 2
The lower end of the intermediate shaft 25 is fitted into the cylindrical body fixed to the upper end of the intermediate shaft 25, and is secured by a bolt 39 passing through the intermediate shaft 25 in the horizontal direction. The cylindrical body 37 is formed in a shape that can be directly fitted to the lower end of the rotating shaft 21 and locked with a bolt 39.

In the above embodiment, the operator grips the horizontal handles 15, 15 while driving the engine 3,
The ground is drilled by the blade 29 of the rotating drill 23.

When moving the drilling machine 1, the operator grasps the upper handle 17 with one hand and suspends the drilling machine 1.

(e) Effects of the invention Since the invention has the structure as described in the claims, it is possible to easily work by gripping the support and resisting the reaction force of digging, and moreover, by gripping the upper handle, drilling can be carried out easily. Since the drilling machine can be held with one hand, it is easy to move, and the tip of the drill can be easily positioned during work, and the structure is simple and strong.

Note that FIG. 2 shows a conventional example, in which the support 5
A side handle 41 is provided horizontally on one side of the side handle 41, and a grip portion 43 is provided on the support body 5 on the opposite side to this side handle 41.
is provided. Further, the same reference numerals as those shown in FIG. 1 represent the same constituent parts.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments as well. Further, the symbols shown in the claims do not limit the technical scope of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a perspective explanatory view of one embodiment of the present invention;
The figure is a perspective explanatory view of a conventional example. 3... Prime mover, 5... Support, 17... Upper handle, 21... Rotating shaft, 23... Drill.

Claims (1)

[Scope of utility model registration request] In a drilling machine in which the upper end of a spiral drill 23 is connected to the lower end of a vertical rotating shaft 21 that rotates by the drive of the prime mover 3, the prime mover 3 is
The upper handle 17 is supported within an annular support 5 which is provided horizontally surrounding the periphery, and the upper handle 17 passing directly above the prime mover 3 is supported at both ends by the support 5.
A hole-drilling machine characterized by being fixedly installed at opposing positions.