JPH09201101A - Hoe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase connecting strength of a hoe shank to a hoe blade by stopping rotation of the hoe blade with mutual hooking by only inserting a connection board into an inner hole in a collapsed flat part and connecting and fixing the connecting board with a fastening bolt and a fastening nut in the rotation-stopped state. SOLUTION: This hoe is obtained by forming a hoe shank 1 with a vertically extending modified cross section pipe, projecting a connection board 3 on a hoe blade 2, forming a collapsed flat part 1a at a tip part of the hoe shank 1, inserting the connection board 3 into an inner hole 1b of the collapsed flat part 1a and connecting and fixing the collapsed flat part 1a and the connection board 3 with a fastening bolt 6 and a fastening nut 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hoe used for, for example, plowing work in a field.

[0002]

2. Description of the Related Art As a hoe of this type, one having a structure in which an iron hoe blade is connected to the tip of a wooden hoe handle by a wedge structure composed of a ring and a wedge is known.

[0003]

However, in the above-mentioned conventional structure, the connecting portion between the hoe handle body and the hoe blade body may be loosened due to impact, etc. with use over time, and the hoe blade body may come off. Therefore, there is an inconvenience that an unexpected situation may occur.

[0004]

SUMMARY OF THE INVENTION The present invention is intended to solve such problems, and among the present invention,
According to the first aspect of the invention, a hoe blade body is provided at the tip of the hoe handle body, the hoe handle body is formed by a vertically extending pipe, and a connecting plate is projected from the hoe blade body. Then
A crush flat portion is formed at the tip of the hoe handle, the connecting plate is inserted into the inner hole of the crush flat portion, and the crush flat portion and the connecting plate are connected and fixed by a tightening bolt and a tightening nut. It is in a hoe characterized by being constructed.

Further, the invention according to claim 2 is characterized in that the hoe handle according to claim 1 is made of an aluminum pipe.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 6 show an embodiment of the present invention, in which 1 is a hoe, which is a deformed pipe having an oval cross section extending vertically and made of an aluminum pipe. Consists of.

Reference numeral 2 denotes a hoe blade body, which is formed in a flat hoe shape in this case and is made of stainless steel or iron material.

Reference numeral 3 denotes a connecting plate, which is formed in a flat plate shape in cross section and is provided on the upper surface of the hoe blade body 2 by welding.

The elliptical deformed pipe shown in FIG. 10 is crushed from the left and right sides at the tip of the hoe handle 1 at the tip to form an oblong crush flat portion 1a shown in FIG. 4, which is crushed. The inside of the inner hole 1b of the flat portion 1a is formed in such a shape that the upper end portion of the connecting plate 3 is inserted through the engagement.

Further, in this case, two through holes 4 are formed in the connecting plate 3, two through holes 5 are formed in the crush flat portion 1a, and the tightening bolt 6 is inserted through the flat washer 7 into the through hole 4. 5, the tightening nut 8 is screwed to the end of the tightening bolt 6 via a flat washer 9, and thereby the hoe blade 1 and the connecting plate 3 are connected and fixed.

Reference numeral 10 is an end cap, which is made of synthetic resin in this case, and is fixed to the upper end of the hoe handle 1.

Since this embodiment has the above configuration,
When connecting the hoe blade 2 to the tip of the hoe body 1, the connecting plate 3 protruding from the hoe blade 2 is inserted into the inner hole 1b of the crush flat portion 1a formed at the tip of the hoe body 1. The crush flat portion 1a and the connecting plate 3 can be connected and fixed by the tightening bolts 6 and the tightening nuts 7, so that the connecting plate 3 can be inserted into the inner hole 1b of the crush flat portion 1a to be mutually connected. The hoe blade body 2 is prevented from rotating by the locking of the hoe, and the bolster body 1 and the hoe blade body 2 are improved in connection strength because they are connected and fixed by the tightening bolt 6 and the tightening nut 7 in this stopped state. The crushing flat portion 1a is formed by crushing the hoe handle body 1, thereby forming an inner hole 1b that is locked to the connecting plate 3 in a rotation-stop manner. Therefore, the mutual connection structure is simplified and can be easily manufactured. The manufacturing cost can be reduced, and since the hoe handle 1 is formed by the vertically extending irregularly shaped pipe, the cross-section coefficient against the driving reaction force applied by the hoe handle body 1 due to the plowing work becomes large. In addition, a large mechanical strength can be obtained, and the shape can be easily grasped with respect to the work posture, so that the workability can be improved accordingly.

Further, in this case, since the hoe handle 1 is made of an aluminum pipe, it is possible to reduce the weight and enhance the rust preventive property.

The present invention is not limited to the above-mentioned embodiments, but the structures, forms, materials and the like of the hoe handle body 1 and the hoe blade body 2 are appropriately changed and designed.

[0015]

As described above, according to the present invention, the connecting plate projecting from the hoe blade is provided in the inner hole of the crush flat portion formed at the tip of the hoe handle. It is possible to insert and crush the flattened flat portion and the connecting plate by fastening bolts and tightening nuts.Therefore, simply inserting the connecting plate into the inner hole of the flattening flat portion causes mutual locking and Since the rotation is stopped, and the connection is fixed with the tightening bolt and the tightening nut in this locked state, the connection strength between the hoe handle and the hoe blade can be improved, and durable use can be achieved. The crush flat portion is formed by crushing the hoe handle body, thereby forming an inner hole that is locked against rotation with respect to the connecting plate, so that the mutual connecting structure is simplified,
It can be easily manufactured, and the manufacturing cost can be reduced. Furthermore, since the hoe handle is formed by a vertically extending deformed pipe, it is possible to prevent the driving reaction force applied by the hoe handle from plowing work. The cross-section coefficient is increased, so that a large mechanical strength can be obtained, and the shape can be easily grasped with respect to the working posture, so that the workability can be improved accordingly.

According to the second aspect of the invention, since the hoe handle is made of an aluminum pipe, the weight can be reduced and the rust prevention can be improved.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of drawings]

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

FIG. 2 is an overall exploded perspective view of the embodiment of the present invention.

FIG. 3 is a partial vertical cross-sectional view of the embodiment of the present invention.

FIG. 4 is a cross-sectional view of the flattened flat portion according to the embodiment of the present invention.

FIG. 5 is a transverse cross-sectional view of the upper portion of the hoe handle body according to the embodiment of the present invention.

FIG. 6 is a vertical cross-sectional view of the upper portion of the hoe handle body according to the embodiment of the present invention.

[Explanation of symbols]

 1 Hoe handle 1a Crush flat 1b Inner hole 2 Hoe blade 3 Connecting plate 6 Tightening bolt 8 Tightening nut

Claims (2)

[Claims] 1. A hoe blade body is provided at the tip of the hoe handle body, the hoe handle body is formed by a vertically extending profiled pipe, and a connecting plate is projected from the hoe blade body, and the hoe handle body is formed. A crush flat portion is formed at the tip portion, the connecting plate is inserted into the inner hole of the crush flat portion, and the flat crush portion and the connecting plate are connected and fixed by a tightening bolt and a tightening nut. A characteristic hoe. 2. The hoe according to claim 1, wherein the hoe handle is made of an aluminum pipe.