JP2024040781A

JP2024040781A - Holding tool

Info

Publication number: JP2024040781A
Application number: JP2022145358A
Authority: JP
Inventors: 健二角田; Kenji Tsunoda; 雄児三浦; Yuji Miura; 謙一郎土田; Kenichiro Tsuchida; 路一渡辺; Michikazu Watanabe
Original assignee: TSUNODA KK
Current assignee: TSUNODA KK
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2024-03-26

Abstract

PROBLEM TO BE SOLVED: To provide a holding tool that, when holding a holding object, can bring, from both immediately lateral sides, holding surface parts into contact with the holding object, simultaneously hardly apply a push-out force, and can firmly hold even a slippery holding object having a circular cross section or the like.

SOLUTION: The holding tool includes: a pair of holding half bodies 3 having holding parts 1 at front ends and handle parts 2 at rear ends; and a rotary shaft 4 for connecting opening/closing-rotatably the pair of holding half bodies 3 arranged in a crossing state. The holding tool is configured to be able to open/close the holding parts 1 through operation of the handle parts 2. Holding surface parts 5 facing each other, of the holding parts 1 each include a first curved region 6 formed in a circular arc shape projecting inward from a front end of the holding half body 3 to a predetermined range.

SELECTED DRAWING: Figure 1

Description

本発明は、挟持工具に関するものである。 The present invention relates to a clamping tool.

ペンチやプライヤー等の挟持工具は、回動軸によりＸ字状に回動開閉自在に交差連結されており、柄部の開閉操作により先端の挟持部（アゴ部）は回動を伴って開閉する。 Gripping tools such as pliers and pliers are cross-connected in an X-shape by rotating shafts so that they can be rotated open and closed, and the gripping part (jaw part) at the tip opens and closes by opening and closing the handle. .

例えば特許文献１に開示されるように、挟持部の挟持面が、ぴったりと閉じる平坦面である場合、挟持面がＶ字に開いた状態で被挟持物に接触しＶ字を閉じるように力をかけて挟持するため、被挟持物を前方に押し出す力も同時に加わることになる。 For example, as disclosed in Patent Document 1, when the clamping surface of the clamping part is a flat surface that closes tightly, the clamping surface contacts the clamped object in a V-shaped state and applies force to close the V-shape. Since the object is clamped by applying pressure, a force pushing the clamped object forward is also applied at the same time.

そのため、滑りやすい被挟持物、例えば断面円形状のものを挟持しようとした場合（例えば溝や六角穴がなめたボルトの頭部を横から挟持して回そうとする場合）、強固に掴もうとすると滑り抜けてしまう場合が往々にしてある。 Therefore, if you are trying to grip a slippery object, such as something with a circular cross section (for example, if you are trying to grip the head of a bolt with a smoothed groove or hexagonal hole from the side), be sure to grip it firmly. If you do this, it will often slip through.

実用新案登録第３０６３２１３号公報Utility Model Registration No. 3063213 Publication

本発明は、上述のような現状に鑑みなされたもので、被挟持物を挟持する際、挟持面部を被挟持物の真横から接触させることができ、前方若しくは後方に押し出す力を同時に加えにくく、断面円形状等の滑りやすい被挟持物であっても強固に挟持可能な、これまでにない挟持工具を提供することを目的とする。 The present invention has been made in view of the current situation as described above, and when the object to be held is held, the holding surface portion can be brought into contact with the object from directly beside the object, and it is difficult to simultaneously apply force to push the object forward or backward. To provide an unprecedented clamping tool capable of firmly clamping even a slippery object having a circular cross section.

添付図面を参照して本発明の要旨を説明する。 The gist of the present invention will be explained with reference to the accompanying drawings.

前端に挟持部１を有し後端に柄部２を有する一対の挟持半体３と、交差状に配される前記一対の挟持半体３を開閉回動可能に連結する回動軸４とを含み、前記柄部２を操作することで前記挟持部１を開閉可能に構成した挟持工具であって、
前記挟持部１の互いに対向する挟持面部５は夫々、前記挟持半体３の前端から所定範囲迄において内側に凸となる円弧状に形成された第一湾曲領域６を有することを特徴とする挟持工具に係るものである。 A pair of clamping halves 3 having a clamping part 1 at the front end and a handle part 2 at the rear end, and a rotation shaft 4 connecting the pair of clamping halves 3 disposed in an intersecting manner so as to be rotatable in opening and closing. A clamping tool configured such that the clamping part 1 can be opened and closed by operating the handle part 2,
A clamping device characterized in that each of the mutually opposing clamping surfaces 5 of the clamping part 1 has a first curved region 6 formed in an arcuate shape that is convex inward from the front end of the clamping half body 3 to a predetermined range. It is related to tools.

また、請求項１記載の挟持工具において、前記第一湾曲領域６に、前記挟持部１を閉塞した状態で前記挟持面部５が互いに当接する当接部８が設けられるように構成されていることを特徴とする挟持工具に係るものである。 Further, in the clamping tool according to claim 1, the first curved region 6 is configured to be provided with a contact part 8 where the clamping surface parts 5 abut against each other while the clamping part 1 is closed. The present invention relates to a clamping tool characterized by the following.

また、請求項２記載の挟持工具において、前記当接部８は前記挟持部１の前端に位置していることを特徴とする挟持工具に係るものである。 The holding tool according to claim 2 is characterized in that the abutting portion 8 is located at the front end of the holding portion 1.

また、請求項１記載の挟持工具において、断面円形状の被挟持物９を挟持した際、前記第一湾曲領域６と前記被挟持物９との当接部分Ａおよび前記被挟持物９の中心Ｏを一直線上に位置させることができるように構成されていることを特徴とする挟持工具に係るものである。 Further, in the clamping tool according to claim 1, when the clamped object 9 having a circular cross section is clamped, a contact portion A between the first curved region 6 and the clamped object 9 and a center of the clamped object 9 are provided. The present invention relates to a clamping tool characterized in that it is configured such that O can be positioned in a straight line.

また、請求項１～４いずれか１項に記載の挟持工具において、前記挟持面部５の前記第一湾曲領域６の後方には、外側に凸となる円弧状に形成された第二湾曲領域７が連設されていることを特徴とする挟持工具に係るものである。 Further, in the clamping tool according to any one of claims 1 to 4, a second curved region 7 formed in an arc shape convex outward is provided at the rear of the first curved region 6 of the clamping surface portion 5. The present invention relates to a clamping tool characterized in that these are connected in series.

本発明は上述のように構成したから、被挟持物を挟持する際、挟持面部を被挟持物の真横から接触させることができ、前方若しくは後方に押し出す力を同時に加えにくく、断面円形状等の滑りやすい被挟持物であっても強固に挟持可能な、これまでにない挟持工具となる。 Since the present invention is configured as described above, when the object to be held is held, the holding surface portion can be brought into contact with the object from directly beside the object, and it is difficult to simultaneously apply force pushing forward or backward, and the cross-sectional shape is circular. This is an unprecedented clamping tool that can firmly clamp even slippery objects.

本実施例の概略説明図である。FIG. 2 is a schematic explanatory diagram of this embodiment. 本実施例の要部の拡大概略説明図である。FIG. 2 is an enlarged schematic explanatory diagram of main parts of the present embodiment. 本実施例の使用状態説明図である。FIG. 3 is an explanatory diagram of the usage state of this embodiment. 本実施例の使用状態説明図である。FIG. 3 is an explanatory diagram of the usage state of this embodiment. 別例１の概略説明図である。FIG. 3 is a schematic explanatory diagram of another example 1; 別例１の使用状態説明図である。FIG. 7 is an explanatory diagram of a usage state of another example 1; 別例１の使用状態説明図である。FIG. 7 is an explanatory diagram of a usage state of another example 1; 別例２の概略説明図である。FIG. 7 is a schematic explanatory diagram of another example 2. 別例２の使用状態説明図である。FIG. 7 is an explanatory diagram of a usage state of another example 2; 別例２の使用状態説明図である。FIG. 7 is an explanatory diagram of a usage state of another example 2; 別例３の概略説明図である。FIG. 7 is a schematic explanatory diagram of another example 3. 別例３の使用状態説明図である。FIG. 7 is an explanatory diagram of a usage state of another example 3. 別例４の概略説明図である。FIG. 6 is a schematic explanatory diagram of another example 4; 別例４の使用状態説明図である。FIG. 7 is an explanatory diagram of a usage state of another example 4. 従来例で板を横向きに挟持した場合の概略説明図である。It is a schematic explanatory view when a board is held horizontally in a conventional example. 従来例で板を縦向きに挟持した場合の概略説明図である。It is a schematic explanatory view when a board is held vertically in a conventional example.

好適と考える本発明の実施形態を、図面に基づいて本発明の作用を示して簡単に説明する。 Embodiments of the present invention that are considered suitable will be briefly described by showing the effects of the present invention based on the drawings.

柄部２を操作して挟持部１を閉塞し第一湾曲領域６で被挟持物を挟持すると、第一湾曲領域６の円弧状部分の一部が左右方向（真横）から被挟持物９に対向当接する。 When the handle part 2 is operated to close the clamping part 1 and the object to be clamped is clamped in the first curved area 6, a part of the arc-shaped portion of the first curved area 6 is inserted into the clamped object 9 from the left and right direction (directly sideways). Abut against each other.

したがって、被挟持物９に当接する部分の前方および後方は被挟持物９に対して離隔し、強い挟持力で挟持しても被挟持物９を前方若しくは後方に押し出す力を同時に加えにくく滑り抜けにくい。 Therefore, the front and rear parts of the part that comes into contact with the object 9 are separated from the object 9, and even if the object is held with a strong clamping force, it is difficult to apply force to push the object 9 forward or backward at the same time, making it difficult for the object 9 to slip out. Hateful.

例えば、第一湾曲領域６の曲率などを適宜設定して、断面円形状の被挟持物９を挟持した際、前記第一湾曲領域６と前記被挟持物９との当接部分Ａおよび前記被挟持物９の中心Ｏを一直線上に位置させるように構成することができ、滑りやすい断面円形状の被挟持物９でも強固に挟持でき、例えば溝や六角穴がなめたボルトの頭部を横から挟持して良好に回すことが可能となる。 For example, when the curvature of the first curved region 6 is set appropriately and the object 9 having a circular cross section is held, the contact portion A between the first curved region 6 and the object 9 and the object The center O of the clamped object 9 can be positioned in a straight line, and even a slippery clamped object 9 with a circular cross section can be securely clamped. This makes it possible to grip it and turn it easily.

本発明の具体的な実施例について図面に基づいて説明する。 Specific embodiments of the present invention will be described based on the drawings.

本実施例は、図１に図示したように、前端に挟持部１を有し後端に柄部２を有する一対の挟持半体３と、交差状に配される前記一対の挟持半体３を開閉回動可能に連結する回動軸４とを含み、前記柄部２を操作することで前記挟持部１を開閉可能に構成した挟持工具である。 As shown in FIG. 1, this embodiment includes a pair of clamping halves 3 having a clamping part 1 at the front end and a handle part 2 at the rear end, and the pair of clamping halves 3 arranged in an intersecting manner. This gripping tool includes a rotation shaft 4 connected to the gripping portion 1 so as to be rotatable in opening and closing, and is constructed such that the gripping portion 1 can be opened and closed by operating the handle portion 2.

具体的には、前記挟持部１の互いに対向する挟持面部５は夫々、前記挟持半体３の前端から所定範囲迄において（回動軸４に交差する断面の形状が）内側に凸となる円弧状に形成された第一湾曲領域６を有するものである。 Specifically, each of the mutually opposing clamping surfaces 5 of the clamping part 1 has a circular shape (the cross-sectional shape intersecting the rotating shaft 4) is convex inward from the front end of the clamping half body 3 to a predetermined range. It has a first curved region 6 formed in an arc shape.

各部を具体的に説明する。 Each part will be explained in detail.

本実施例の各挟持部１の挟持面部５は、図２に図示したように、前端側に前記第一湾曲領域６が設けられ、第一湾曲領域６の後方には外側に凸となる円弧状に形成された第二湾曲領域７が連設されている。 As shown in FIG. 2, the clamping surface part 5 of each clamping part 1 of this embodiment is provided with the first curved area 6 on the front end side, and behind the first curved area 6 is a circle that is convex to the outside. A second curved region 7 formed in an arc shape is connected.

また、第二湾曲領域７の後方には切断刃10が連設されている。また、切断刃10と柄部２との間には回動軸４が設けられている。 Furthermore, a cutting blade 10 is continuously provided at the rear of the second curved region 7. Further, a rotation shaft 4 is provided between the cutting blade 10 and the handle portion 2.

なお、本実施例では、挟持部１同士の対向方向を左右方向とし、回動軸方向（図１の紙面手前奥方向）および左右方向と交差する方向を前後方向として以下説明する。 In the present embodiment, the direction in which the holding parts 1 face each other will be referred to as the left-right direction, and the direction that intersects the rotation axis direction (front to back direction in the paper of FIG. 1) and the left-right direction will be described below as the front-back direction.

本実施例においては、各挟持部１の挟持面部５には夫々、回動軸方向に延設される溝歯11（図３（ｂ）などでは図示を省略している。）が前後方向に複数並設され、回動軸方向から見たとき、第一湾曲領域６において溝歯11の歯先を前後方向に結ぶ仮想線が内側に凸となる円弧状となるように前記挟持面部５が構成されている。つまり、溝歯11を省略した各図の第一湾曲領域６の円弧状線は溝歯11の歯先を結んだ仮想線に沿った線である（第二湾曲領域７の円弧状線も同様。）。 In this embodiment, groove teeth 11 (not shown in FIG. 3(b) etc.) extending in the rotation axis direction are provided on the clamping surface portion 5 of each clamping part 1 in the front-rear direction. A plurality of gripping surfaces 5 are arranged in parallel, and the clamping surface portions 5 are arranged in such a manner that, when viewed from the direction of the rotation axis, an imaginary line connecting the tooth tips of the groove teeth 11 in the front-rear direction in the first curved region 6 forms an arc shape convex inward. It is configured. In other words, the arcuate line of the first curved area 6 in each figure with the groove tooth 11 omitted is a line along the imaginary line connecting the tooth tips of the groove tooth 11 (the arcuate line of the second curved area 7 is also the same). ).

また、本実施例は、回動軸方向からみたとき、第一湾曲領域６に、挟持部１を閉塞した状態で挟持面部５が互いに当接する当接部８が設けられるように構成されている。具体的には、各第一湾曲領域６の円弧を構成する円20同士の接点が、当接部８に位置するように構成されている（当接部８は回動軸方向に延在し線状に当接する。）。 Further, this embodiment is configured such that, when viewed from the direction of the rotation axis, the first curved region 6 is provided with a contact portion 8 in which the clamping surface portions 5 contact each other while the clamping portion 1 is closed. . Specifically, the points of contact between the circles 20 forming the arc of each first curved region 6 are located at the abutting portions 8 (the abutting portions 8 extend in the rotational axis direction). contact in a line).

具体的には、回動軸方向からみたとき、各第一湾曲領域６の円弧を構成する円20の円弧中心Ｏ´は、前記左右方向において一直線上に位置し、挟持部１を閉塞した状態で前記円弧中心Ｏ´同士を結ぶ仮想直線Ｘが第一湾曲領域６内に位置するように構成されている（この仮想直線Ｘ上に当接部８および接点が位置している。）。 Specifically, when viewed from the rotation axis direction, the arc centers O' of the circles 20 forming the arc of each first curved region 6 are located on a straight line in the left-right direction, and the holding part 1 is closed. The virtual straight line X connecting the arc centers O' is located within the first curved area 6 (the contact portion 8 and the contact point are located on this virtual straight line X).

そして、図３（ｂ），４（ｂ）に図示したように、断面円形状の被挟持物９を挟持した際、前記円弧中心Ｏ´、第一湾曲領域６と被挟持物９との当接部分Ａおよび被挟持物９の中心Ｏを、左右方向において一直線上（仮想直線Ｘ上）に位置させることができるように構成されている。したがって、第一湾曲領域６の突出部分を被挟持物９に真横から当接させて強固に挟持できる。本実施例では、図３，４のように、小径物であっても大径物であっても、第一湾曲領域６内で挟持すれば、真横から良好に挟持できる。 As shown in FIGS. 3(b) and 4(b), when the object 9 having a circular cross section is held, the arc center O', the first curved region 6 and the object 9 are in contact with each other. It is configured such that the contact portion A and the center O of the object to be held 9 can be positioned on a straight line (on the imaginary straight line X) in the left-right direction. Therefore, the protruding portion of the first curved region 6 can be brought into contact with the object to be held 9 from right side, and the object can be firmly held. In this embodiment, as shown in FIGS. 3 and 4, whether the object is small-diameter or large-diameter, if it is held within the first curved region 6, it can be satisfactorily held from the side.

なお、上述のように、歯溝11が存在することから、挟持部１で被挟持物９を挟持した際、被挟持物９には各挟持面部５の溝歯11の歯先が一若しくは複数ずつ当接するため、当接部分Ａは一点ではなく実際にはある程度の範囲を有する。 As described above, since the tooth grooves 11 are present, when the object 9 to be held is held by the holding part 1, one or more tooth tips of the groove teeth 11 of each holding surface part 5 are attached to the object 9 to be held. Since the contact portion A is in contact with each other, the contact portion A is not just one point but actually has a certain range.

また、本実施例では、当接部８は挟持部１の前端に位置する構成としている（前記仮想直線Ｘが挟持部１の前端に位置するように構成されている。）。したがって、第一湾曲領域６のどの位置でも、掴みにくい断面円形状の被挟持物９を良好に挟持できるし、前端がぴったり閉じるため紙片や薄いシート体なども良好に挟持できる。 Further, in this embodiment, the contact portion 8 is configured to be located at the front end of the clamping portion 1 (the virtual straight line X is configured to be located at the front end of the clamping portion 1). Therefore, the object 9 having a circular cross section that is difficult to grasp can be satisfactorily held at any position in the first curved region 6, and since the front end is tightly closed, pieces of paper, thin sheets, etc. can also be held satisfactorily.

また、板などの断面矩形状の被挟持物９は、特許文献１に開示されるような従来構成では、図１５，１６に図示したように、横向きに掴む場合も縦向きに掴む場合も挟持部51の挟持面が被挟持物９の端部（角）に当たり該端部を挟持することになる。したがって、端部を前方に押し出す力も加わるため滑り抜けが生じ易い。この点、本実施例では被挟持物９の端部ではなく奥に入った部分を前方に押し出す力を加えることなく強固に挟持できる（後述の別例３，４参照）。図中、符合54は回動軸である。 In addition, in the conventional configuration disclosed in Patent Document 1, the object 9 to be held having a rectangular cross section, such as a plate, can be held both horizontally and vertically, as shown in FIGS. 15 and 16. The clamping surface of the portion 51 hits the end (corner) of the object to be clamped 9 and clamps the end. Therefore, since a force pushing the end portion forward is also applied, slippage is likely to occur. In this respect, in this embodiment, the deep part of the object 9, not the end, can be firmly held without applying force to push it forward (see other examples 3 and 4 described later). In the figure, reference numeral 54 is a rotation axis.

なお、前記接点および当接部８は挟持部１の前端位置に限らず、図５～７に図示した別例１のように、前端より後方側に設ける（前記仮想直線Ｘが前端より後方側に位置するように構成する）こともできる。 Note that the contact point and the abutment part 8 are not limited to the front end position of the holding part 1, but are provided at the rear side of the front end as in the example 1 shown in FIGS. ).

この場合、当接部８から後方では被挟持物９を良好に挟持できるが（図６参照）、当接部８より前方で被挟持物９を挟持しようとすると、被挟持物９との当接部分Ａと中心Ｏとが左右方向において一直線上とならず（仮想直線Ｘにも重ならず）、前方に押し出す力が生じる場合がある（図７参照）。また、挟持部１前端が閉塞しないため、例えば紙片などは本実施例の構成に比べ若干掴みにくい場合がある。 In this case, the object to be held 9 can be held well behind the contact part 8 (see FIG. 6), but if you try to hold the object to be held in front of the contact part 8, the object 9 will come into contact with the object to be held. The contact portion A and the center O are not on a straight line in the left-right direction (do not overlap with the virtual straight line X), and a force pushing forward may be generated (see FIG. 7). Furthermore, since the front end of the holding portion 1 is not closed, it may be slightly harder to grasp, for example, pieces of paper than in the configuration of this embodiment.

また、回動軸方向からみたとき、第一湾曲領域６の円弧を構成する円20同士が接点で接触する構成に限らず、図８～１０に図示した別例２のように、円20同士が２点で交わる構成（挟持部１を閉塞した状態で仮想直線Ｘが第一湾曲領域６外に位置する構成）とすることもできる。 Furthermore, when viewed from the direction of the rotation axis, the configuration is not limited to the configuration in which the circles 20 that make up the arc of the first curved area 6 contact each other at the contact point, but also the configuration in which the circles 20 are in contact with each other at the contact point, as in another example 2 shown in FIGS. 8 to 10. It is also possible to have a configuration in which the imaginary straight line X intersects at two points (a configuration in which the virtual straight line X is located outside the first curved area 6 with the clamping part 1 closed).

この場合、挟持部１の前端が当接部８となり、この当接部８に一方の交点が位置することになる。別例２の場合には、径がある程度大きい被挟持物９は良好に挟持できるが（図９参照）、小径物を挟持しようとすると、被挟持物９との当接部分Ａと中心Ｏとが左右方向において一直線上とならず、後方に押し出す力が生じる場合がある（図１０参照）。 In this case, the front end of the holding part 1 becomes the contact part 8, and one intersection point is located in this contact part 8. In the case of another example 2, the object to be held 9 with a relatively large diameter can be held well (see FIG. 9), but when trying to hold an object with a small diameter, the contact part A with the object to be held and the center O may not be on a straight line in the left-right direction, and a force pushing backward may occur (see FIG. 10).

また、第一湾曲領域６は挟持部１の全長（挟持部１の前端位置から切断刃10の後端位置までの長さ）の少なくとも２％以上の範囲にわたって設けるのが好ましい。本実施例では約４０％の範囲にわたって設けている。 Further, it is preferable that the first curved region 6 is provided over a range of at least 2% of the total length of the clamping part 1 (the length from the front end position of the clamping part 1 to the rear end position of the cutting blade 10). In this embodiment, it is provided over a range of about 40%.

また、第一湾曲領域６の円弧の曲率半径は、本実施例では３５ｍｍとしている。当該曲率半径は好ましくは１５ｍｍ～５５ｍｍ程度であるが、１ｍｍから４００ｍｍの範囲で適宜設定できる。 Furthermore, the radius of curvature of the arc of the first curved region 6 is 35 mm in this embodiment. The radius of curvature is preferably about 15 mm to 55 mm, but can be set as appropriate in the range of 1 mm to 400 mm.

例えば、曲率半径を３３０ｍｍとした別例３（図１１，１２）においては、従来例（図１５）に対し、横向きの薄板状の被挟持物９を挟持部１に深く入れても該挟持部１を角に当てることなく被挟持物９の奥に入った部分を強固に掴める形状となる。また、曲率半径を１．５ｍｍとした別例４（図１３，１４）においては、従来例（図１６）に対し、縦向きの薄板状の被挟持物９でも挟持部１を角に当てることなく良好に掴める形状となる。 For example, in another example 3 (FIGS. 11 and 12) in which the radius of curvature is 330 mm, compared to the conventional example (FIG. 15), even if the sideways thin plate-shaped object 9 to be held is inserted deeply into the holding portion 1, the holding portion remains unchanged. The shape is such that a deep part of the object to be held 9 can be firmly grasped without having to hit the corner of the object. In addition, in another example 4 (FIGS. 13 and 14) in which the radius of curvature is 1.5 mm, unlike the conventional example (FIG. 16), even when the object 9 is held in the form of a vertically oriented thin plate, the holding part 1 can be brought into contact with the corner. It has a shape that makes it easy to grip.

なお、本実施例は挟持部１の互いに対向する挟持面部５の前端から所定範囲迄に第一湾曲領域６を設けた構成としているが、挟持部１の互いに対向する挟持面部５の前端から所定領域迄には、回動軸方向からみたとき直線状に形成されたストレート部（平坦部分）を設け、その後方に第一湾曲領域６を連設する構成としても良い。この場合、ストレート部は第一湾曲領域６より狭い範囲で設ける。 Note that in this embodiment, the first curved region 6 is provided in a predetermined range from the front end of the mutually opposing clamping surfaces 5 of the clamping part 1; A straight portion (flat portion) formed in a straight line when viewed from the rotation axis direction may be provided up to the region, and the first curved region 6 may be continuously provided behind the straight portion. In this case, the straight portion is provided in a range narrower than the first curved region 6.

本実施例は上述のように構成したから、第一湾曲領域６の円弧状部分の一部が左右方向（真横）から被挟持物９に対向当接する際、被挟持物９に当接する部分の前方および後方は被挟持物９に対して離隔し、強い挟持力で挟持しても被挟持物９を前方若しくは後方に押し出す力を同時に加えにくく滑り抜けにくい。 Since the present embodiment is configured as described above, when a part of the arc-shaped portion of the first curved region 6 comes into contact with the object to be held 9 from the left and right direction (directly sideways), the portion that comes into contact with the object to be held 9 is The front and rear portions are separated from the object 9 to be held, and even if the object 9 is held with a strong clamping force, it is difficult to simultaneously apply force to push the object 9 forward or backward, making it difficult to slip out.

また、断面円形状の被挟持物９を挟持した際、前記第一湾曲領域６と前記被挟持物９との当接部分Ａおよび前記被挟持物９の中心Ｏを一直線上に位置させることができ、滑りやすい断面円形状の被挟持物９でも強固に挟持でき、例えば溝や六角穴がなめたボルトの頭部を横から挟持して良好に回すことが可能となる。 Furthermore, when the object to be held 9 having a circular cross section is held, the contact portion A between the first curved region 6 and the object to be held 9 and the center O of the object to be held 9 can be positioned on a straight line. Therefore, even a slippery object 9 having a circular cross section can be firmly held, and for example, the head of a bolt with a groove or a hexagonal hole can be held from the side and turned smoothly.

よって、本実施例は、被挟持物を挟持する際、挟持面部を被挟持物の真横から接触させることができ、前方若しくは後方に押し出す力を同時に加えにくく、断面円形状等の滑りやすい被挟持物であっても強固に挟持可能な、これまでにない挟持工具となる。 Therefore, in this embodiment, when an object to be held is held, the holding surface portion can be brought into contact with the object from right side, and it is difficult to apply a force pushing forward or backward at the same time. This is an unprecedented gripping tool that can firmly grip even objects.

１挟持部
２柄部
３挟持半体
４回動軸
５挟持面部
６第一湾曲領域
７第二湾曲領域
８当接部
９被挟持物
Ａ当接部分
Ｏ中心 1 Clamping part 2 Handle part 3 Clamping half body 4 Rotating shaft 5 Clamping surface part 6 First curved area 7 Second curved area 8 Contact part 9 Object to be clamped A Contact part O Center

Claims

前端に挟持部を有し後端に柄部を有する一対の挟持半体と、交差状に配される前記一対の挟持半体を開閉回動可能に連結する回動軸とを含み、前記柄部を操作することで前記挟持部を開閉可能に構成した挟持工具であって、
前記挟持部の互いに対向する挟持面部は夫々、前記挟持半体の前端から所定範囲迄において内側に凸となる円弧状に形成された第一湾曲領域を有することを特徴とする挟持工具。 The handle includes a pair of clamping halves having a clamping part at the front end and a handle part at the rear end, and a rotation shaft connecting the pair of clamping halves disposed in an intersecting manner so as to be rotatable in opening and closing. A clamping tool configured such that the clamping part can be opened and closed by operating the clamping part,
A clamping tool characterized in that each of the mutually opposing clamping surface parts of the clamping part has a first curved region formed in an arcuate shape that is convex inward from the front end of the clamping half to a predetermined range.

請求項１記載の挟持工具において、前記第一湾曲領域に、前記挟持部を閉塞した状態で前記挟持面部が互いに当接する当接部が設けられるように構成されていることを特徴とする挟持工具。 2. The clamping tool according to claim 1, wherein the first curved region is provided with an abutting part in which the clamping surfaces contact each other with the clamping part closed. .

請求項２記載の挟持工具において、前記当接部は前記挟持部の前端に位置していることを特徴とする挟持工具。 3. The clamping tool according to claim 2, wherein the abutting part is located at a front end of the clamping part.

請求項１記載の挟持工具において、断面円形状の被挟持物を挟持した際、前記第一湾曲領域と前記被挟持物との当接部分および前記被挟持物の中心を一直線上に位置させることができるように構成されていることを特徴とする挟持工具。 In the clamping tool according to claim 1, when a clamped object having a circular cross section is clamped, a contact portion between the first curved region and the clamped object and a center of the clamped object are located on a straight line. A clamping tool characterized by being configured to be able to.

請求項１～４いずれか１項に記載の挟持工具において、前記挟持面部の前記第一湾曲領域の後方には、外側に凸となる円弧状に形成された第二湾曲領域が連設されていることを特徴とする挟持工具。 In the clamping tool according to any one of claims 1 to 4, a second curved region formed in an outwardly convex arc shape is connected to the rear of the first curved region of the clamping surface portion. A clamping tool characterized by: