JPH0232016Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention is related to a sickle used for cutting grass, small shrubs, etc.

[Prior art]

BACKGROUND ART Conventional sickles, particularly folding sickles, are known in which the base of a blade is pivotally attached to a gripping part formed by vertically dividing the upper part of a wooden handle using a support shaft.

[Problem that the invention attempts to solve]

As mentioned above, in the conventional folding sickle, the base of the sickle blade is pivotally attached to the gripping part, which is made by splitting the neck of the wooden handle into two in the lengthwise direction of the handle, and the blade is attached to the wooden handle using a stopper provided on the handle. Since it is fixed to the handle, the wooden handle does not hold the blade body enough and looseness occurs, and if the gripping part of the wooden handle's blade body is split in half in the longitudinal direction of the wooden handle, the gripping part Sickles are often weakened and damaged during use, and sickles used for cutting down small bushes, especially when mowing undergrowth in mountains and forests, cut the object by slamming the blade against the object, so the handle rests on the blade. The impact force was quite large, and the clamping part of the blade of the handle often broke, and the sickle was not able to be used to its full effect because the force of the hand had to be adjusted when cutting.

[Means for solving problems]

This invention was devised in view of the above-mentioned problems, and a backrest part ₄ 1 is attached to the part facing the back part 3 ₁ of the blade 3 to hold the blade 3 in the handle tube 2 to which the handle 1 is to be engaged.
A blade clamping body 4 consisting of two clamping plates 4 ₂ and 4 ₃ is provided, and the base 3 ₂ of the blade body 3 is held between the clamping plates 4 ₂ and 4 ₃ of the blade clamping body 4. When the blade 3 is pulled out from the handle, the back part 3 ₁ comes into contact with the back rest part 4 ₁ , and the blade body clamping body 4 strongly clamps the blade body 3 ,
The handle 1 is rotatably attached to the support shaft 5, and the handle 1 is engaged with the handle tube 2, and the blade is housed in the opposing portion of the handle tube 2 and the blade portion 3 of the blade ₃ of the handle 1. It has sections 1 ₁ and 2 ₁ .

[Effect]

In this invention, when the sickle is not used, the locking part 6 of the blade clamping body 4 that locks the blade 3 is disengaged from the blade 3, and the base 3 ₂ of the blade 3 is released. The blade body 3 is rotated downward against the clamping force of the clamping plates 4 ₂ and 4 ₃ of the blade clamping body 4 that strongly clamps the blade part 3 ₃ between the handle tube 2 and the handle 1. When stored in the blade accommodating parts ₁₁ and ₂₁ , the blade part ₃₃ of the blade body 3 is safe because it is not exposed to the outside, and the base of the blade part 3 is not exposed to the clamping plates ₄₂ , ₄₃ even when folded. Since it is strongly clamped by the blade, there is no rattling and the blade body does not unexpectedly jump out from the handle 1, increasing safety. Next, when using the sickle, pull out the blade body 3 from inside the blade housing parts ₁₁ and 21 by resisting the clamping force of the clamping plates 42 and ₄₃ , and remove the blade body 3 from the inside of the blade housing parts ₁₁ and ₂₁ . The back part 3 ₁ is brought into contact with the back rest part 4 ₁ of the blade clamping body 4, and the base 3 ₂ of the blade body 3 is strongly clamped by the clamping plates 4 ₂ and 4 ₃ , and,
When the blade 3 is fixed so as not to move by the locking body 6 of the blade clamping body 4, the blade 3 is locked against the blade clamping body 4 and becomes usable, and the blade 3 is firmly fixed without wobbling. The blade body will not come off from the blade holding body 4.

After this, grass and small shrubs will be cut, but when the blade part 3 of the blade body ₃ collides with the object to be cut, the impact received by the blade body 3 will be small if the object to be cut is soft grass, etc. When mowing undergrowth, there are many bamboo trees and small shrubs, and since such objects are hard, it is not possible to cut grass, so use a strong force to slam the blade 3 against the object. The blade part ₃₃ is used to make the cut. Therefore, the impact force is large, and in the conventional model, problems such as the engagement part between the handle and the blade were broken, but in this design, the back part ₃₁ of the blade 3 is connected to the blade. Since the blade part 3 is supported by contacting the back part ₄₁ of the clamping body 4, the impact received from the object to be cut is received and supported by the back part ₄₁ , so the impact is not applied to the support shaft 3 or the engagement part. There is no damage to the stopper 6, and the handle tube 2 of the blade clamping body 4 is engaged with the handle 1, so the handle tube is not as weak as the conventional one split in two. Since the handle 2 covers the sturdy handle 1 which has no splits,
This engaging portion also withstands the impact transmitted from the blade clamping body 4 well, and does not break the neck of the handle. Furthermore, if the gap between the pinch plates 4 ₂ and 4 ₃ that sandwich the blade body 3 is made narrower than the plate thickness B of the blade body 3, the base 3 ₂ of the blade body 3 will be between the sandwich plates 4 ₂ and 4 ₃ . This further strengthens the grip between the blade clamping body 4 and the base ₃₂ of the blade 3.

〔Example〕

An embodiment of this invention will be described based on the attached drawings.

This idea consists of a sickle-shaped blade body 3 made of cutlery steel, two sandwiched plates 4 ₂ and 4 ₃ made by bending an iron plate into an inverted U-shape and having a width narrower than the thickness of the blade body 3, and a bent part. It consists of a blade holding body 4 having a backrest ₄₁ , a cylindrical handle tube 2 provided below the blade holding body 4, and a wooden handle 1. 3 has its base 3 ₂ inserted between the clamping plates 4 ₂ and 4 ₃ of the blade clamping body 4 , and is rotatably pivoted to the blade clamping body 4 by a support shaft 5 .

Reference numeral 6 denotes a locking body provided on the blade clamping body 4 for fixing the blade 3 to the blade clamping body 4, which engages with the blade 3 to prevent the blade 3 from rotating during use. A wooden handle is fitted into the handle tube 2 as the handle 1,
It is fixed to the handle tube 2 with a mekugi 7. and handle tube 2
and the blade body 3 3 on the opposite surface of the wooden handle 1 and the blade part 3 ₃ of the blade body _3.
Cuts are provided as blade housing portions 1 ₁ and 2 ₁ for accommodating the blades. In addition, the above-mentioned blade body clamping body 4 and handle tube 2
is not limited to the integrally formed one formed by bending a single iron plate as shown in the embodiment, but is made by welding the 4 parts of the blade holding body and the 2 parts of the handle tube separately formed. It may be integrated,
The blade body clamping body 4 itself may also be an integral body made by combining two separately formed iron plates and a backrest, and the point is that the blade body 3 can be clamped on the blade body clamping body 4. Any material that allows the handle 1 to engage with the handle tube 2 may be used. In addition, as in the embodiment, the distance A between the pinch plates 4 ₂ and 4 ₃ is set to the blade body 3.
The width is not limited to that which prevents the blade 3 from moving unintentionally by making the width narrower than the plate thickness of the base of the blade, but the blade clamping body 4 can prevent the blade 3 from rotating unintentionally. It is fine as long as it is something. The locking body 6 is attached to the base ₃ of the blade 3 to the blade clamping body 4 as shown in the embodiment.
The clasp 6 by the leaf spring biased toward the blade body 3
The blade body 3 is not limited to the one in which the blade body 3 is engaged with the blade body holder 4, but any other type may be used as long as the blade body 3 can be fixed to the blade body clamping body 4. Furthermore, the handle 1 is not limited to a wooden handle as in the embodiment, but may be any handle that can be used as a sickle handle, such as a hollow pipe handle.

〔effect〕

As described above, in this invention, the base 3 ₂ of the sickle blade 3 is held between the blade holder 4 and pivoted by the support shaft 5, and the handle tube 2 of the blade holder 4 is connected to the handle 1. As a result, the handle neck, which is the engagement part between the handle and the blade body, which was conventionally thought to be the weakest, has become extremely strong in this invention, even if excessive force is applied from the blade body 3 during use. Will not break. In other words, since it is durable, it can safely perform powerful mowing operations with a large amount of force.

In addition, the engagement between the blade body 3 and the blade clamping body 4 is such that the blade body 3 is strongly clamped by the clamping plates 4 ₂ and 4 ₃ of the blade clamping body 4, so that the blade body 3 may wobble during use. Furthermore, since the blade 3 is fixed by the locking body 6 of the blade clamping body 4, the blade 3 does not rotate unexpectedly, and it can be locked more firmly, making it easier to cut grass. Even if the blade part 33 of the blade body ₃ is struck against the workpiece with great force to cut the cut, the back support part ₄₁ catches the blade body 3, causing damage to the support shaft 5, etc. Blade clamping body 4
This will not deteriorate the engagement with the

When the use is finished, the locking body 6 is removed from the blade body 3 to release the lock, and the blade body 3 is rotated toward the handle 1, and the blade part ₃₃ is connected to the handle 1 and the blade housing part ₁₁ of the handle tube 2. 2 When placed in ₁ , the bulk of the sickle becomes low and the blade is hidden in the handle, making it safe and easy to carry. This sickle has the feature that even in the folded state, the base ₃₂ of the blade body 3 is strongly held by the blade clamping body 4, so that the blade body 3 does not accidentally jump out from the handle 1, making it extremely safe.

[Brief explanation of the drawing]

The drawings are views showing an embodiment of the present invention, and Fig. 1 is a front view, Fig. 2 is a right side view, Fig. 3 is a view showing a state in which the blade clamping body is broken and the blade is folded, and Fig. 4. Figure 5 shows the blade in use with the blade clamping body broken.
The figure is a cross-sectional view taken along the - line showing the blade body in a folded state, FIG. 6 is a cross-sectional view taken along the - line showing the blade body in a used state, and FIG. 7 is an enlarged cross-sectional view taken along the line V-V. 1...Handle, 1 ₁ , 2 ₁ ...Blade housing, 2...
Handle tube, 3...blade body, 3 ₁ ...back, 3 ₂ ...base,
3 ₃ ...Blade part, 4...Blade body clamping body, ₄₁ ...Back rest part, _42,43 ...Clip plate, ₅ ...Spindle, 6...Locking body, A...Distance , B...Plate thickness.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A handle tube 2 with which the handle 1 is to be engaged, and two blades having a back rest 4 ₁ at a portion facing the back 3 ₁ of the blade 3 to hold the blade 3. A blade clamping body 4 consisting of clamping plates 4 ₂ , 4 ₃ is provided, and the clamping plates 4 ₂ , 4 of the blade clamping body 4 are
When the blade ₃ is pulled out from the handle 1, the back part 3 ₁ contacts the back rest part 4 ₁ and the blade clamping body ₄ holds the blade 3 between the base 3 2 and the blade 3. The handle tube 2 and the handle 1 are engaged with each other, and the handle tube 2 and the blade part 3 of the blade body 3 of the handle 1 are connected to each other so that the handle tube 2 and the blade part ₃ of the handle 1 are connected to each other. A folding sickle characterized in that blade accommodating parts 1 ₁ and 2 ₁ are provided in opposing parts of the folding sickle. 2. The blade clamping body 4 is characterized by being formed by bending a single steel plate into an inverted U shape, and installing the clamping plates 4 ₂ , 4 ₃ and the bent portion as a back rest 4 ₁ in the handle tube 2. A folding sickle as set forth in claim 1 of the utility model registration claim. 3 The blade clamping body 4 is formed by joining the two clamping plates 4 ₂ and 4 ₃ to the back part 3 ₁ of the blade 3 directly or through an intervening material to form a handle tube as the back part 4 _{1 .} 2. The folding sickle according to claim 1 of the utility model registration claim. 4. Utility model registration claim 1, characterized in that the gripping tube 2, the blade holding body 4, and the back rest ₄₁ are formed by integrally forming a single steel plate and then folding it in half. The folding sickle mentioned in the section. 5 The handle tube 2 and the blade clamping body 4 are made of two steel plates assembled together, and the parts of the clamping plates 4 ₂ and 4 ₃ facing the back part 3 ₁ of the blade 3 are connected directly or with an intervening object. The folding sickle according to claim 1 of the registered utility model claim, characterized in that a back rest part ₄₁ is provided with an interposed joint. 6 The blade clamping body 4 is configured such that when the blade 3 is pulled out from the handle, the distance A between the clamping plates 4 ₂ and 4 ₃ that clamp the blade 3 is determined by the thickness B of the blade 3 that engages with this. Claims 1, 2, 3, 4, or 5 of a utility model registration claim characterized by narrowing
The folding sickle mentioned in the section. 7 Utility model registration claims 1, 2, and 3 characterized in that the blade clamping body 4 is provided with a locking body 6 for fixing the blade 3 to the blade clamping body 4.
The folding sickle according to item 4, item 5, or item 6.