JP3092924U - Spare blade type mowing scythe - Google Patents

Abstract

(57) [Abstract] [Problem] A blade of a mowing scythe can be removed very easily, and the entire blade from the cutting edge to the base of the removed blade can be sharpened evenly and smoothly with a household sharpener. Provide a replaceable blade-type mowing scythe that can be used again after sharpening is completed. A shank having a lower portion attached to a handle and an upper portion protruding from a shank attached to the handle by a fastening tool is used to rub the entire blade portion of the blade body of the removable sickle with a sharpening device only a few times. In addition, it was possible to sharpen without fail, and attached to the shank protruding through the tightening tool after sharpening. The blade is
With a crescent shape, a blade part is formed inside, and a notch part is formed by slightly notching the end opposite to the blade edge constituting the blade part to improve the workability of the sharpener. A fitting insertion portion extending upward was formed at the site, and a small hole through which a bolt constituting a fastener was fitted was formed above the notch.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a technical field of a replaceable blade mowing scythe with a grip handle having a replaceable blade body. Is.

[0002]

[Prior art]

  In the conventional mowing sickle, the blade of the blade often scrubs soil during mowing work. The sharpness immediately deteriorates, so the work carried by the person with I was sharpening the blade with a stone.

[0003]   However, the base and handle of the blade on the side opposite the blade interferes with the entire blade, making the blade smooth. I couldn't sharpen.

[0004]   Furthermore, even if the wife at home did weeding work, the blade could not be sharpened, The blade with soil was so rusty that it couldn't smoothly perform the next work. Therefore, I bought cheap foreign products.

[0005]   In addition, the conventional mowing sickle cannot sharpen the blade part as described above. As you can see, if there is dirt on the blade, it will rust, Since it is difficult to mow the grass, there were times when it was thrown away as it was. . Therefore, the resources could not be used effectively.

[0006]

[Problems to be solved by the device]

  The present invention is very easy to remove the blade of a grass cutting scythe and starts from the tip of the removed blade. Even the housewife can use the sharpener for home use to make the entire blade area smooth and even. It can be sharpened, and it can be reattached and used again after polishing. It was made possible.

[0007]   In addition, the grass-cutting scythe of the present invention also sells a replacement blade (150 yen to 180 yen) at the same time. If the blade becomes dull during use, remove the blade and use the above-mentioned household sharpener to remove the blade. I made it possible to attach the blade with a brush just by rubbing the body 4 to 5 times. Even if the blade is sharpened 30 to 40 times, it can be reused sufficiently and has a long product life. It has the excellent advantage of significantly extending the life. Therefore, we have limited resources It was possible to make use of it ineffectively and to make it a cheaper product than conventional products.

[0008]   In addition, the blade body of the present invention uses Yasugi Hagane, and since the blade part is chrome It has a rust preventive effect and significantly extends the product life.

[0009]   In addition, the present invention allows even those with weak finger tightening power to attach and detach the blade body sufficiently. I'm sorry.

[0010]   Also, the present invention prevents the blade from wobbling for a long time once the blade is tightened. .

[0011]

[Means for Solving the Problems]

  The invention according to claim 1 is such that the lower part of the grip handle is attached to the upper part of the shank and the tightening tool is attached. The blade of a detachable mowing sickle is attached to the entire blade of the blade with a sharpener. The sharpening can be done securely, and after the sharpening, the tightening tool A replaceable blade type mowing sickle characterized by being attached to the shank.

[0012]   According to a second aspect of the present invention, the blade body is a crescent-shaped body, and the blade portion is formed inside. The edge of the blade that is on the opposite side of the blade to slightly improve the workability of the sharpener. A fitting insertion portion that forms a good notch portion and extends upward at a predetermined portion of the upper edge portion And a small hole into which the bolt constituting the tightening tool can be inserted is formed above the cutout portion. The blade-removable mowing scythe according to claim 1, wherein

[0013]   According to a third aspect of the invention, in the upper portion of the shank protruding from the grip handle, the ball A small hole for inserting the belt, and a bulging part that slightly bulges upward at the peripheral edge of the small hole. The small hole is formed in the lower part of the small hole, and the small hole is fitted to the fitting insertion part formed in the cutout part of the blade body. A protrusion to be inserted when it is pressed is formed, and the small hole of the shank and the small hole of the blade body are formed. Small bolt that penetrates the bolts that make up the tightening tool to be inserted into the A support having a hole and a fitting insertion portion into which the protrusion of the shank is inserted and provided below the small hole. A separate holding part is provided, the blade body is superposed on the back surface of the shank, and further from the back surface of the blade body. Insert the bolt of the support part into the small hole and insert the protrusion part into the fitting insertion part of the cutout part. Insert, insert the projection into the insertion part of the support, and screw the nut onto the bolt. The replaceable blade mowing scythe according to claim 1 or 2, which is assembled.

[0014]

[Embodiment of device]

  Since the embodiments relating to the inventions according to claims 1 to 3 are common, the following will be described. Will be explained collectively.

[0015]   In the drawing, a is a grip handle, and a part of the shank c is provided above the grip handle a. Insert and attach. Reference character b is a crescent-shaped blade, and a blade portion 1 is provided inside. The blade The body b uses Yasugi Hagane, and the blade part 1 is chrome, so it has a rust prevention effect. There is.

[0016]   2 is an end portion of the blade body b on the side opposite to the blade tip 3, and a portion slightly above the blade portion 1 is cut. It is a notch formed by being embedded. This notch 2 is usually formed in the shape shown in the drawing. Then do. Reference numeral 5 denotes a side edge which constitutes the cutout portion 2 and which extends the base portion 4 of the blade portion 1 upward. It is a department.

[0017]   Reference numeral 6 denotes an upper edge portion which constitutes the cutout portion 2. Therefore, the notch 2 is formed on the side. It is notched along the edge 5 and the upper edge 6.

[0018]   Reference numeral 7 denotes a predetermined portion of the upper edge portion 6, for example, above the inner portion of the blade b from the central portion of the baffle. It is a fitting insertion portion extending in one direction.

[0019] Reference numeral 8 denotes a tightening tool which will be described below and is formed at the end of the blade body b above the fitting insertion section 7. It is a small hole into which the bolt 10 is inserted.

[0020]   Furthermore, the blade body b is a drawing drawing of the inside from the blade tip 3 to the end opposite to the blade tip 3. Bend slightly as shown.

[0021]   The above is the configuration of the blade b of the grass cutting scythe of the present invention.

[0022]   Next, the configuration of the plate-shaped shank c will be described. Usually made of stainless steel.

[0023]   The lower part of this shank c is inserted into the grip handle a as shown in the drawing, and is inserted through a fixing tool. Then it is attached.

[0024]   And, the shank c has a slightly sloping central portion which is curved in a slanting shape when viewed from the side. It is formed in an inclined shape that gradually rises from the lower bottom, and the rear end of the central part is It is extended flat. Since the shank c is usually made of stainless steel, it does not rust.

[0025]   The lower part of the shank c is fitted into the upper part of the grip handle a and is inserted through the fixing part. It is fixed so that it will not come off.

[0026]   Further, a small hole 9 for fitting and inserting a stainless steel bolt 10 is formed on the upper part of the shank c. To achieve. At this time, the peripheral portion of the small hole 9 is slightly bulged upward to form a bulged portion 11.

[0027]   Further, at a lower portion of the small hole 9, a projection portion 12 to be inserted into the fitting insertion portion 7 of the blade body b. To form. The small hole 9 and the protruding portion 12 having the above-described configuration are the small holes of the blade body b which are overlapped with each other. 8 and the fitting insertion portion 7, respectively, and the bolt 10 penetrates through both the small holes 8 and 9, The protrusion 12 is fitted into the insertion portion 7.

[0028]   When viewed from the side, the shank c has a horizontal lower part and an upper part is a central part. It inclines upward at a predetermined angle from the bottom 13 of the part. The reason is shank c The blade b fixed to the upper part has a shape that enables smooth mowing work. It is.

[0029]   Although the shape of the protrusion 12 of the shank c and the fitting insertion portion 7 of the blade b is not limited, Together with the bolt 10 penetrating the small holes 8 and 9, and the fitting insertion portion 7 and the protrusion 12 The strength at the time of fixing the blade body b is ensured by the two points where and are fitted.

[0030]   In d, it is a support part and has the following structure. In this support part d, The blade body b located on the back surface of the stack c is further contacted from the back surface of the blade body b, and the blade body b It prevents rattling.

[0031]   A small hole 14 that penetrates the bolt 10 is formed inside the support portion d. This small hole 1 4 forms a bulging portion 15 which slightly bulges downward at its peripheral portion. 16 is bolt 10 The head 17 is a screw part.

[0032]   The bolt 10 is fitted into the small hole 14 so as not to come off beforehand as shown in the drawing. To do.

[0033]   Further, the supporting portion d is fitted and inserted into the fitting and inserting portion 7 of the blade body b below the small hole 14. The fitting insertion portion 18 that receives the protruding portion 12 of the shank c is formed.

[0034]   Reference numeral 19 is a stainless steel nut screwed to the bolt 10.

[0035]   According to the present invention, the blade b is interposed between the shank c and the supporting portion d, and as described above, Align the small holes 8 and 9 with each other, and attach the stainless steel bolt 10 fixed to the support portion d. At the same time, the projection 12 is fitted into the fitting insertion portion 7, and the fitting insertion portion 1 of the support portion d is further inserted. After it is inserted into 8, the nut 19 made of stainless steel is screwed onto the bolt 10.

[0036]   When screwed by the nut 16, the bulging portion at the peripheral portion of the small hole 9 of the shank c. And the bulging portion 15 provided on the peripheral edge of the small hole 14 of the supporting portion d make it extremely easy. You can tighten. Therefore, it is easy to screw in or unscrew the nut 19, so that even a housewife can use the blade body. b can be easily attached and detached.

[0037]   As described above, when the nut 19 is unscrewed, the blade b can be easily removed, and a household sharpener (Fig. The blade is sharpened just by rubbing the blade portion 1 (not shown) 4 to 5 times.

[0038]

[Effect of device]

  According to the first aspect of the present invention, the lower portion is attached to the grip handle and the lower portion is attached to the protruding upper portion of the shank. Make sure that the entire blade of the sickle blade that can be attached and detached via the tightening tool is fully covered with a sharpener. It can be sharpened, and after sharpening it can be attached to the shank via the tightening tool. A removable blade-type grass cutting scythe that can be attached, so if the cutting becomes poor, immediately shank. Remove the blade body, put a household sharpener on the blade portion of the blade body, from the blade tip to the base The entire blade can be sharpened by rubbing the entire blade portion about 4 to 5 times. for that reason When cutting the grass, there are no uncut parts, and you will not feel any discomfort during the work. .

[0039]   Furthermore, the blade of the present invention can be sharpened easily by a housewife at home, so It has excellent practicality that the blade can be used 40 to 50 times.

[0040]   The invention as set forth in claim 2, wherein the blade is formed in a crescent shape, and a blade portion is formed inside. The edge part on the side opposite to the cutting edge that constitutes the part is cut out slightly to improve the workability of the sharpener. Forming a cutout portion, and forming a fitting insertion portion extending upward at a predetermined portion of the upper edge portion, Replaceable blade type grass with a small hole into which a bolt constituting a tightening tool can be inserted above the notch. Since it is a cutting scythe, it has the same effect as the device of the first aspect.

[0041]   Further, according to the present invention, a notched portion is formed at the end of the blade body opposite to the cutting edge. Therefore, it does not hinder the flow of sharpening tools. Therefore, the sharpening work became good.

[0042]   In addition, the present invention, when tightening the shank and the blade body, the two points of the bolt and the protrusion Since the blade body and shank can be securely fixed, the blade body will never wobble. Therefore, the mowing work can be performed extremely smoothly.

[0043]   According to a third aspect of the invention, in the upper portion of the shank protruding from the grip handle, the ball A small hole for inserting the belt, and a bulging part that slightly bulges upward at the peripheral edge of the small hole. The small hole is formed in the lower part of the small hole, and the small hole is fitted to the fitting insertion part formed in the cutout part of the blade body. A protrusion to be inserted when it is pressed is formed, and the small hole of the shank and the small hole of the blade body are formed. Small bolt that penetrates the bolts that make up the tightening tool to be inserted into the A support having a hole and a fitting insertion portion into which the protrusion of the shank is inserted and provided below the small hole. A separate holding part is provided, the blade body is superposed on the back surface of the shank, and further from the back surface of the blade body. Insert the bolt of the support part into the small hole and insert the protrusion part into the fitting insertion part of the cutout part. Insert, insert the projection into the insertion part of the support, and screw the nut onto the bolt. Since it is a replaceable blade type grass mowing sickle to be assembled, it has the same effect as the above-mentioned claim 1 and 2. There is.

[0044]   Further, the present invention slightly bulges the peripheral portion of each small hole of the shank and the supporting portion, The blade body can be securely clamped even when the rotation force when tightening the nut against the bolt is small, and after clamping Has the advantage that the blade does not rattle.

[Brief description of drawings]

FIG. 1 is a front view of a replaceable blade mowing scythe of the present invention.

FIG. 2 is a vertical cross-sectional view of a shank having a spare blade fitted therein and a support portion.

FIG. 3 is a front view of a blade body of a spare blade.

FIG. 4 is a plan view of a spare blade.

5A and 5B are a front view and a vertical sectional view of a shank.

6A and 6B are a front view and a vertical sectional view of a supporting portion.

[Explanation of symbols]

a grip handle b blade c shank d Support section 1 blade 2 notches 3 cutting edge 4 base 5 side edges 6 Upper edge 7 Fitting part 8 small holes 9 small holes 10 volts 11 bulge 12 protrusion 13 bottom 14 small holes 15 Bulging part 16 heads 17 screw part 18 Fitting part 19 nuts

Claims (3)

[Scope of utility model registration request] Claims: 1. Rubbing the entire blade portion of the blade body of the sickle, which is detachable through a tightening tool, to the upper portion of the shank of which the lower portion is attached to the grip handle, by simply rubbing the sharpener several times A replaceable blade type mowing sickle that can be sharpened securely without being hindered and can be attached to the shank protruding through the tightening tool after the sharpening. 2. The blade body is crescent-shaped and has a blade portion formed on the inner side thereof, and the end portion on the side opposite to the blade edge constituting the blade portion is slightly cut to improve workability of the sharpener. A cutout portion is formed, a fitting insertion portion extending upward is formed at a predetermined portion of the upper edge portion, and a small hole into which a bolt constituting a tightening tool can be inserted is formed above the cutout portion. The replaceable blade mowing scythe according to claim 1, characterized in that. 3. A small hole for fitting and inserting the bolt is formed in an upper portion of a shank protruding from the grip handle, and a bulging portion is formed so as to slightly bulge the peripheral portion of the small hole upward. In the lower portion of the small hole, a protrusion that is inserted when the small holes are fitted to the fitting insertion portion formed in the cutout portion of the blade is formed, and the small hole of the shank and the small hole of the blade are formed. Has a small hole penetrating a bolt that constitutes a tightening tool to be inserted into and has a peripheral edge portion slightly bulging downward, and a fitting insertion portion into which the protrusion of the shank is fitted is provided below the small hole. A support portion is separately provided, the blade body is superposed on the back surface of the shank, and a bolt of the support portion is inserted into the small hole from the back surface of the blade body, and the protrusion portion is provided in the fitting insertion portion of the cutout portion. 2. The insertion, the projection is fitted into the fitting insertion portion of the support portion, and the nut is screwed to the bolt for assembly. Alternatively, the replaceable blade mowing scythe according to claim 2.