JP6329928B2 - Branch cutting - Google Patents

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JP6329928B2
JP6329928B2 JP2015176335A JP2015176335A JP6329928B2 JP 6329928 B2 JP6329928 B2 JP 6329928B2 JP 2015176335 A JP2015176335 A JP 2015176335A JP 2015176335 A JP2015176335 A JP 2015176335A JP 6329928 B2 JP6329928 B2 JP 6329928B2
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blade
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浩二 寺林
浩二 寺林
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浩二 寺林
浩二 寺林
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/02—Secateurs; Flower or fruit shears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/06—Hand shears; Scissors characterised by the shape of the blades

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
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  • Scissors And Nippers (AREA)

Description

本発明は、枝切り鋏に関する。   The present invention relates to a pruning shears.

従来の枝切り鋏として、例えば特許文献１に開示された構成が知られている。図７に示すように、この枝切り鋏５０は、正面視凸状に湾曲する凸状刃部５２を有する切刃５１と、正面視凹状に湾曲する凹状刃部に沿って上刃５４および溝刃５５が形成された受刃５３とが、支点５６の周りに回動可能とされている。   For example, a configuration disclosed in Patent Document 1 is known as a conventional pruning shears. As shown in FIG. 7, this branch cutting rod 50 includes a cutting blade 51 having a convex blade portion 52 that curves in a convex shape when viewed from the front, and an upper blade 54 and a groove along the concave blade portion that curves in a concave shape when viewed from the front. A receiving blade 53 on which a blade 55 is formed is rotatable around a fulcrum 56.

特開２００５−１０２６４９号公報JP 2005-102649 A

上記従来の枝切り鋏５０は、切刃５１と受刃５３との間に形成される間隙が、基部側から先端側に向けて徐々に拡がるように形成されているため、切刃５１と受刃５３との間に挟持した枝が太い場合に、枝が先端方向に逃げ易くなることから、枝の太さに拘わらず確実な切断を可能にする点で更に改良の余地があった。   The conventional branch cutting rod 50 is formed so that the gap formed between the cutting blade 51 and the receiving blade 53 gradually widens from the base side toward the distal end side. When the branches sandwiched between the blades 53 are thick, the branches can easily escape in the direction of the tip, so there is room for further improvement in that reliable cutting is possible regardless of the thickness of the branches.

そこで、本発明は、細い枝から太い枝まで容易且つ確実に切断することができる枝切り鋏の提供を目的とする。   SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a branch cutting rod that can be easily and reliably cut from a thin branch to a thick branch.

本発明の前記目的は、基部側から先端側に向けて凸状に湾曲する凸状刃部を有する切刃と、基部側から先端側に向けて凹状に湾曲する凹状刃部を有する受刃とが、支軸周りに回動可能に連結された枝切り鋏であって、 前記凹状刃部は、各部位における前記凸状刃部との間の最小距離が、基部側から先端側に向けて徐々に増加した後に狭窄部を経て減少するように形成され、 前記受刃に対して前記切刃を閉じる方向に回動させると、前記狭窄部が前記凹状刃部の基部側に向けて移動するように構成され、前記凸状刃部および凹状刃部の先端側には、それぞれの湾曲方向と異なる方向に屈曲する補助刃部が形成されており、前記受刃に対して前記切刃を閉じるときに、前記凸状刃部と前記補助刃部との変曲点である基部と、前記凹状刃部と前記補助刃部との変曲点である基部とが、互いに重なり合う枝切り鋏により達成される。
The object of the present invention is to provide a cutting blade having a convex blade portion that curves convexly from the base side toward the tip side, and a receiving blade having a concave blade portion that curves concavely from the base side toward the tip side. Is a branch cutting rod that is pivotally connected around the support shaft, and the concave blade portion has a minimum distance from the convex blade portion in each part from the base side toward the tip side. It is formed so that it gradually increases and then decreases through the narrowed portion, and when the cutting blade is rotated in the closing direction with respect to the receiving blade, the narrowed portion moves toward the base side of the concave blade portion. An auxiliary blade portion that bends in a direction different from the respective bending directions is formed on the tip side of the convex blade portion and the concave blade portion, and the cutting blade is closed with respect to the receiving blade. Sometimes, the base which is an inflection point between the convex blade part and the auxiliary blade part, the concave blade part and the A base which is an inflection point of a co blade portion is achieved by debranching shears mutually overlapping.

また、前記受刃の刃部には、複数の刃溝が形成されていることが好ましい。   Moreover, it is preferable that the blade part of the receiving blade has a plurality of blade grooves.

本発明によれば、細い枝から太い枝まで容易且つ確実に切断することができる枝切り鋏を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the branch cutting stick which can be cut | disconnected easily and reliably from a thin branch to a thick branch can be provided.

本発明の一実施形態に係る枝切り鋏の正面図である。It is a front view of the pruning shears concerning one embodiment of the present invention. 図１に示す枝切り鋏の作動状態の一例を示す正面図である。It is a front view which shows an example of the operating state of the branch cutting tack shown in FIG. 図２のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図１に示す枝切り鋏の作動状態の他の例を示す正面図である。It is a front view which shows the other example of the operating state of the branch cutting tack shown in FIG. 図４のＢ−Ｂ断面図である。It is BB sectional drawing of FIG. 本発明の他の実施形態に係る枝切り鋏の正面図である。It is a front view of the pruning shears concerning other embodiments of the present invention. 従来の枝切り鋏の正面図である。It is a front view of the conventional branch cutting shears.

以下、本発明の実施の形態について、添付図面を参照して説明する。図１は、本発明の一実施形態に係る枝切り鋏の正面図である。図１に示すように、枝切り鋏１は、切刃１０および受刃２０が支軸３０の周りに回動可能に連結されている。切刃１０および受刃２０の支軸３０よりも基部側には、それぞれ把手１５，２５が設けられている。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front view of a pruning shears according to an embodiment of the present invention. As shown in FIG. 1, in the branch cutting rod 1, a cutting blade 10 and a receiving blade 20 are connected so as to be rotatable around a support shaft 30. Handles 15 and 25 are provided on the base side of the cutting blade 10 and the support shaft 30 of the receiving blade 20, respectively.

把手１５，２５は、介在されたバネ部材３１により、切刃１０と受刃２０との間を開く方向に付勢されている。一方の把手２５の基端部には、他方の把手１５と係合して切刃１０および受刃２０を閉じた状態に維持することができるストッパ２６が、回動自在に設けられている。   The grips 15 and 25 are urged by an interposed spring member 31 in a direction to open between the cutting blade 10 and the receiving blade 20. A stopper 26 that can engage with the other handle 15 and maintain the cutting blade 10 and the receiving blade 20 in a closed state is rotatably provided at the proximal end portion of the one handle 25.

切刃１０は、支軸３０側となる基部側から先端側に向けて凸状に湾曲する凸状刃部１１と、凸状刃部１１の湾曲方向と異なる方向に屈曲して形成された補助刃部１２とを備えている。補助刃部１２は、凸状刃部１１と連続するように凹状に屈曲して形成されており、凸状刃部１１と補助刃部１２との変曲点を基部１２ａとしている。凸状刃部１１および補助刃部１２は、片刃状に形成されており、正面側に研削面２３，２４が形成されている。   The cutting blade 10 includes a convex blade portion 11 that curves in a convex shape from the base side, which is the support shaft 30 side, toward the distal end side, and an auxiliary formed by bending in a direction different from the bending direction of the convex blade portion 11. The blade part 12 is provided. The auxiliary blade portion 12 is formed in a concave shape so as to be continuous with the convex blade portion 11, and an inflection point between the convex blade portion 11 and the auxiliary blade portion 12 is used as a base portion 12a. The convex blade portion 11 and the auxiliary blade portion 12 are formed in a single blade shape, and grinding surfaces 23 and 24 are formed on the front side.

受刃２０は、切刃１０の正面側に配置されており、基部側から先端側に向けて凹状に湾曲する凹状刃部２１と、凹状刃部２１の湾曲方向と異なる方向に屈曲して形成された補助刃部２２とを備えている。補助刃部２２は、凹状刃部２１と連続するように凸状に屈曲して形成されており、凹状刃部２１と補助刃部２２との変曲点を基部２２ａとしている。凹状刃部２１と補助刃部２２も片刃状であり、裏面側に研削面が形成されている。受刃２０の補助刃部２２の長さは、切刃１０の補助刃部１２の長さと同程度であることが好ましい。   The receiving blade 20 is disposed on the front side of the cutting blade 10, and is formed by bending in a direction different from the bending direction of the concave blade portion 21, and a concave blade portion 21 that curves concavely from the base side toward the distal end side. The auxiliary blade portion 22 is provided. The auxiliary blade portion 22 is formed to be bent in a convex shape so as to be continuous with the concave blade portion 21, and an inflection point between the concave blade portion 21 and the auxiliary blade portion 22 is a base portion 22 a. The concave blade portion 21 and the auxiliary blade portion 22 are also a single blade shape, and a ground surface is formed on the back surface side. The length of the auxiliary blade portion 22 of the receiving blade 20 is preferably about the same as the length of the auxiliary blade portion 12 of the cutting blade 10.

切刃１０の凸状刃部１１の形状は、基部側から直線状に立ち上がった後、円弧状に湾曲するように形成されている。一方、受刃２０の凹状刃部２１の形状は、基部側が円弧状に形成されており、先端側の湾曲が基部側の湾曲よりも緩やかとなるように形成されている。このような凸状刃部１１および凹状刃部２１の形状の組み合わせにより、凸状刃部１１と凹状刃部２１との間に形成される間隙は、図１に示すように切刃１０を受刃２０に対して大きく開いた状態で、基部側から先端側に向けて拡がり、受刃２０の先端近傍で若干狭まる。   The shape of the convex blade portion 11 of the cutting blade 10 is formed so as to be curved in an arc shape after rising linearly from the base side. On the other hand, the shape of the concave blade portion 21 of the receiving blade 20 is formed such that the base side is formed in an arc shape, and the curve on the tip side is gentler than the curve on the base side. Due to the combination of the shapes of the convex blade portion 11 and the concave blade portion 21, the gap formed between the convex blade portion 11 and the concave blade portion 21 receives the cutting blade 10 as shown in FIG. In a state in which the blade 20 is widely opened, it spreads from the base side toward the tip side, and slightly narrows in the vicinity of the tip of the receiving blade 20.

より詳細には、凹状刃部２１の基部側から先端までの各部位において、凸状刃部１１との最小距離を測定したときに、測定部位を凹状刃部２１の基部側から先端側に向けて移動させるにつれて、最小距離が徐々に増加する。最小距離の増加の割合は、測定部位が凹状刃部２１の先端に近づくと徐々に低下し、ある部位を超えると、最小距離の変化は増加から減少に転じる。この部位を狭窄部Ｓと定義すると、凹状刃部２１は、各部位における凸状刃部１１との間の最小距離が、基部側から先端側に向けて徐々に増加した後に、狭窄部Ｓを経て減少する。   More specifically, when the minimum distance from the convex blade 11 is measured at each part from the base side to the tip of the concave blade part 21, the measurement part is directed from the base side to the tip side of the concave blade part 21. The minimum distance will gradually increase as you move. The rate of increase in the minimum distance gradually decreases as the measurement site approaches the tip of the concave blade 21, and when the measurement site exceeds a certain site, the change in the minimum distance starts from increasing. When this part is defined as the constriction S, the concave blade part 21 has the minimum distance from the convex blade part 11 in each part gradually increased from the base side toward the tip side, and then the constriction part S is defined. It decreases after passing.

上記の構成を備える枝切り鋏１は、支軸３０に近い凸状刃部１１および凹状刃部２１の基部側で太枝などの被切断物４０を挟持することができるので、把手１５，２５を握ることにより、被切断物４０に大きなせん断力を作用させることができる。したがって、枝の太さに拘わらず容易に切断することができる。   Since the branch cutting rod 1 having the above-described configuration can hold the workpiece 40 such as a thick branch on the base side of the convex blade portion 11 and the concave blade portion 21 close to the support shaft 30, the handles 15, 25 By grasping, a large shearing force can be applied to the workpiece 40. Therefore, it can be easily cut regardless of the thickness of the branches.

図２に示すように、切断のため受刃２０に対して切刃１０を閉じる方向（矢示方向）に回動させると、切刃１０と受刃２０との間に形成される間隙の形状は徐々に変化し、狭窄部Ｓの位置は、凹状刃部２１の基部側に移動する。被切断物４０は、狭窄部Ｓを超えて先端側に逃げるおそれがないため、狭窄部Ｓの移動によって、凸状刃部１１および凹状刃部２１の基部側に被切断物４０を保持し続けることができ、図３に示す凸状刃部１１および凹状刃部２１間のせん断力によって、被切断物４０の切断を容易且つ確実に行うことができる。凹状刃部２１における狭窄部Ｓの移動は、被切断物４０の切断開始から切断終了までの間、基部側に向けて連続的に行われることが好ましい。   As shown in FIG. 2, when the cutting blade 10 is rotated with respect to the receiving blade 20 in the closing direction (arrow direction) for cutting, the shape of the gap formed between the cutting blade 10 and the receiving blade 20. Changes gradually, and the position of the constriction S moves to the base side of the concave blade 21. Since the workpiece 40 has no possibility of escaping to the distal end side beyond the narrowed portion S, the workpiece 40 is continuously held on the base side of the convex blade portion 11 and the concave blade portion 21 by the movement of the narrowed portion S. The workpiece 40 can be easily and reliably cut by the shearing force between the convex blade 11 and the concave blade 21 shown in FIG. It is preferable that the movement of the constricted portion S in the concave blade portion 21 is continuously performed toward the base side from the start of cutting of the workpiece 40 to the end of cutting.

また、本実施形態の枝切り鋏１は、切刃１０および受刃２０がそれぞれ備える補助刃部１２，２２により、細い枝などを切断することができる。図２に示す状態から、図４に示すように受刃２０に対して切刃１０を更に閉じると、切刃１０および受刃２０が備える補助刃部１２，２２の基部１２ａ,２２ａが、正面視において互いに重なり合う。この状態から切刃１０を更に閉じると、補助刃部１２，２２は、基部１２ａ,２２ａおよび先端を揃えた状態で互いに直線的に接近し、挟持した被切断物４０’を、図５に示す補助刃部１２，２２間のせん断力によって切断することができる。   Moreover, the branch cutting rod 1 of this embodiment can cut | disconnect a thin branch etc. by the auxiliary blade parts 12 and 22 with which the cutting blade 10 and the receiving blade 20 are each provided. When the cutting blade 10 is further closed with respect to the receiving blade 20 as shown in FIG. 4 from the state shown in FIG. 2, the base portions 12a and 22a of the auxiliary blade portions 12 and 22 included in the cutting blade 10 and the receiving blade 20 are in front They overlap each other in view. When the cutting blade 10 is further closed from this state, the auxiliary blade portions 12 and 22 linearly approach each other with the base portions 12a and 22a and the tips aligned, and the object 40 ′ to be sandwiched is shown in FIG. It can cut | disconnect with the shear force between the auxiliary blade parts 12 and 22. FIG.

このような補助刃部１２，２２による剪定は、従来の枝切り鋏の先端部を利用した剪定とは異なり、被切断物４０’を補助刃部１２，２２間に確実に挟持できると共に、切断中における補助刃部１２，２２同士の相対的な動きが直線的なものとなるため、例えば、幹に細い枝が密集しているような場合でも、剪定作業を迅速容易に行うことができる。   Such pruning by the auxiliary blade portions 12 and 22 is different from the conventional pruning using the tip portion of the branch cutting scissors, and the workpiece 40 ′ can be securely sandwiched between the auxiliary blade portions 12 and 22 and cut. Since the relative movement between the auxiliary blade portions 12 and 22 in the inside becomes linear, the pruning operation can be performed quickly and easily even when, for example, thin branches are densely arranged on the trunk.

以上、本発明の一実施形態について詳述したが、本発明の具体的な態様は上記実施形態に限定されない。例えば、図６に示すように、受刃２０の凹状刃部２１に沿って複数の刃溝２３を形成することで、凹状刃部２１における被切断物の保持をより確実にすることができる。   As mentioned above, although one Embodiment of this invention was explained in full detail, the specific aspect of this invention is not limited to the said embodiment. For example, as shown in FIG. 6, by forming a plurality of blade grooves 23 along the concave blade portion 21 of the receiving blade 20, it is possible to more reliably hold the workpiece in the concave blade portion 21.

また、本実施形態の枝切り鋏は、片手刈込用に構成しているが、両手用の枝打ち鋏や、高所用の高枝切り鋏等として構成することもできる。   In addition, although the pruning shears of this embodiment are configured for one-hand trimming, they can also be configured as two-handed pruning shears, a high-pruning shears for high places, or the like.

１ 枝切り鋏
１０ 切刃
１１ 凸状刃部
１２ 補助刃部
２０ 受刃
２１ 凹状刃部
２２ 補助刃部
２３ 刃溝
３０ 支軸
Ｓ 狭窄部 DESCRIPTION OF SYMBOLS 1 Branch cutting rod 10 Cutting blade 11 Convex blade part 12 Auxiliary blade part 20 Receiving blade 21 Concave blade part 22 Auxiliary blade part 23 Blade groove 30 Support axis S Narrow part

Claims (2)

基部側から先端側に向けて凸状に湾曲する凸状刃部を有する切刃と、基部側から先端側に向けて凹状に湾曲する凹状刃部を有する受刃とが、支軸周りに回動可能に連結された枝切り鋏であって、
前記凹状刃部は、各部位における前記凸状刃部との間の最小距離が、基部側から先端側に向けて徐々に増加した後に狭窄部を経て減少するように形成され、
前記受刃に対して前記切刃を閉じる方向に回動させると、前記狭窄部が前記凹状刃部の基部側に向けて移動するように構成され、
前記凸状刃部および凹状刃部の先端側には、それぞれの湾曲方向と異なる方向に屈曲する補助刃部が形成されており、
前記受刃に対して前記切刃を閉じるときに、前記凸状刃部と前記補助刃部との変曲点である基部と、前記凹状刃部と前記補助刃部との変曲点である基部とが、互いに重なり合う枝切り鋏。 A cutting blade having a convex blade portion that curves in a convex shape from the base side toward the distal end side and a receiving blade having a concave blade portion that curves in a concave shape from the base side toward the distal end side rotate around the support shaft. A movably connected branch cutting fence,
The concave blade part is formed such that the minimum distance between the convex blade part in each part gradually decreases from the base side toward the distal side and then decreases through the narrowed part,
When the cutting blade is rotated in the closing direction with respect to the receiving blade, the narrowed portion is configured to move toward the base side of the concave blade portion ,
On the tip side of the convex blade part and the concave blade part, an auxiliary blade part that is bent in a direction different from the respective bending direction is formed,
When the cutting blade is closed with respect to the receiving blade, the base is an inflection point between the convex blade portion and the auxiliary blade portion, and the inflection point between the concave blade portion and the auxiliary blade portion. Branch cutting ridges whose bases overlap each other. 前記受刃の刃部には、複数の刃溝が形成されている請求項１に記載の枝切り鋏。 The branch cutting scissors according to claim 1, wherein a plurality of blade grooves are formed in the blade portion of the receiving blade.
JP2015176335A 2015-09-08 2015-09-08 Branch cutting Active JP6329928B2 (en)

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PCT/JP2016/075322 WO2017043369A1 (en) 2015-09-08 2016-08-30 Pruning shears

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JPH0713483Y2 (en) * 1990-11-09 1995-04-05 嘉男 岩谷 Scissors
JP3021411U (en) * 1995-06-30 1996-02-20 ニシガキ工業株式会社 Structure of scissors such as branch cutting scissors
JP4775927B2 (en) * 2003-10-01 2011-09-21 浩二 寺林 Branch cutting
JP2014068618A (en) * 2012-10-01 2014-04-21 Systec:Kk Fruit harvesting scissors

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