JP6639327B2 - Drilling tool and through hole processing device - Google Patents

Drilling tool and through hole processing device Download PDF

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JP6639327B2
JP6639327B2 JP2016103488A JP2016103488A JP6639327B2 JP 6639327 B2 JP6639327 B2 JP 6639327B2 JP 2016103488 A JP2016103488 A JP 2016103488A JP 2016103488 A JP2016103488 A JP 2016103488A JP 6639327 B2 JP6639327 B2 JP 6639327B2
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昭弘 酒井
昭弘 酒井
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Mirai Kogyo KK
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Description

本発明は、板材に貫通孔を穿設するための穿孔工具、及び、板材に貫通孔を穿設し、該貫通孔周縁に保護具を取着するための貫通孔加工装置に関する。   The present invention relates to a drilling tool for drilling a through-hole in a plate material, and a through-hole processing device for drilling a through-hole in a plate material and attaching a protector to a periphery of the through-hole.

一般に、壁や天井の裏面の下地材として板材が設置される。例えば、天井や壁に照明器具を取り付ける際、該下地材に貫通孔を穿設し、該貫通孔を介してケーブルなどの配線・配管材が引き出される。下地材に形成された貫通孔端面は鋭っているため、下地材の貫通孔端面と配線・配管材が擦れて損傷や断線しないように、リング状の保護具（例えば、ブッシング）が貫通孔周縁に取り付けられる。つまり、貫通孔に装着された保護具によって、配線・配管材が鋭い貫通孔端面から保護される。   Generally, a plate material is installed as a base material on the back surface of a wall or a ceiling. For example, when mounting a lighting fixture on a ceiling or a wall, a through hole is formed in the base material, and a wiring or piping material such as a cable is drawn through the through hole. Since the end surface of the through-hole formed in the base material is sharp, a ring-shaped protector (for example, a bushing) is provided with a through-hole so that the end surface of the through-hole of the base material and the wiring / piping material are not rubbed and damaged. Attached to the periphery. That is, the wiring / piping material is protected from the sharp end face of the through-hole by the protector attached to the through-hole.

特許文献１は、下地材（１００）に貫通孔（１１０）を穿孔するための穿孔工具（１）、及び、該貫通孔（１１０）に取着されるブッシング（２００）からなる貫通孔加工装置を開示する。穿孔工具（１）は、保持ハンドル（２）を備えた本体（３）と、この本体（３）から延設された支持フレーム（４）に設けられた筒刃（５）と、この筒刃（５）に挿入すべく進退操作可能に設けられた穿孔刃（６）とを有している。該穿孔刃（６）は、本体（３）に軸支された可動ハンドル（７）と、保持ハンドル（２）とを、鋏の柄のように互いに近接離反させることで進退操作されるようになっている。また、穿孔刃（６）は円柱形状の刃体の先端側が刃になっているが、穿孔刃（６）の基端側には、末広がりなテーパー面が円柱を取り巻く様にして形成された鍔部（１６）が備えられ、穿孔刃（６）が筒刃（５）に挿入されるときには、筒刃（５）の開口周縁による口端部（１７）と対向する配置になっている。そして、鍔部（１６）と口端部（１７）とは、下地材（１００）を穿孔するときに、穿孔された貫通孔（１１０）の周縁を挟むことのできる配置関係となっていて、これにより鍔部（１６）と口端部（１７）は貫通孔周縁に対するプレス型（１８）を成している。当該穿孔工具（１）を使用して下地材（１００）に貫通孔（１１０）を形成するには、下地材（１００）を穿孔刃（６）と筒刃（５）で挟むようにして咥えさせ、保持ハンドル（２）と可動ハンドル（７）とをきつく閉じ操作すると、下地材（１００）に貫通孔（１１０）が穿孔される。そして穿孔されたら、更にそのまま閉じ操作を継続すると、その貫通孔（１１０）の周縁（１１１）は、穿孔刃側の鍔部（１６）と筒刃側の口端部（１７）とで挟まれてプレスされ、穿孔刃（６）の前進方向側に後退した形状にプレス成形される。他方、ブッシング（２００）は、筒状のブッシング本体（２０１）の片端にフランジ部（２０２）が設けられており、またブッシング本体（２０１）の外周には雄ネジ（２０３）が形成されている。該ブッシング（２００）を貫通孔（１１０）に押し込みながら回してゆくと、フランジ部（２０２）が貫通孔（１１０）周縁に当たるまで入る。その結果、ブッシング（２００）が貫通孔（１１０）に取着される。なお、（）内に特許文献１の符号を示した。   Patent Document 1 discloses a through-hole processing apparatus including a drilling tool (1) for drilling a through-hole (110) in a base material (100), and a bushing (200) attached to the through-hole (110). Is disclosed. The drilling tool (1) includes a main body (3) having a holding handle (2), a cylindrical blade (5) provided on a support frame (4) extending from the main body (3), and a cylindrical blade (5). And a perforation blade (6) provided so as to be able to advance and retreat to be inserted into (5). The perforation blade (6) is moved forward and backward by moving the movable handle (7) pivotally supported by the main body (3) and the holding handle (2) closer to and away from each other like a handle of scissors. Has become. Further, the drilling blade (6) has a blade at the distal end side of the cylindrical blade body, and a flared tapered surface formed on the base end side of the drilling blade (6) so as to surround the cylinder. A portion (16) is provided, and when the boring blade (6) is inserted into the cylindrical blade (5), it is arranged to face the mouth end (17) formed by the peripheral edge of the opening of the cylindrical blade (5). The flange portion (16) and the mouth end portion (17) are arranged so as to sandwich the periphery of the perforated through hole (110) when the base material (100) is perforated. Thus, the flange (16) and the mouth end (17) form a press die (18) for the periphery of the through hole. In order to form the through hole (110) in the base material (100) using the drilling tool (1), the base material (100) is gripped by being sandwiched between the drilling blade (6) and the cylindrical blade (5). When the holding handle (2) and the movable handle (7) are tightly closed, a through hole (110) is formed in the base material (100). Then, when the closing operation is continued as it is, the periphery (111) of the through hole (110) is sandwiched between the flange (16) on the drilling blade side and the mouth end (17) on the cylindrical blade side. And pressed into a shape retreated toward the forward direction of the drilling blade (6). On the other hand, the bushing (200) is provided with a flange portion (202) at one end of a cylindrical bushing body (201), and a male screw (203) formed on the outer periphery of the bushing body (201). . When the bushing (200) is turned while being pushed into the through hole (110), the bushing (200) enters until the flange portion (202) hits the periphery of the through hole (110). As a result, the bushing (200) is attached to the through hole (110). It should be noted that reference numerals in Patent Document 1 are shown in parentheses.

特開２００９−２７４０８３号公報JP 2009-274083 A

特許文献１の穿孔具では、穿孔刃（６）が下地材（１００）を貫通して貫通孔（１１０）を穿設するとき、穿孔刃（６）の基端にある鍔部（１６）を貫通孔周縁に圧接するまで穿孔刃（６）を前進させる。すなわち、穿孔の際、穿孔刃（６）が貫通孔（１１０）の奥深くに進入して穿孔するので、穿孔刃（６）が貫通孔（１１０）に嵌り込んで、穿孔刃（６）と下地材（１００）とが堅く結合し易い。特には、穿孔した際に貫通孔縁がスプリングバックによって穿孔刃（６）を締め付けてしまう。それ故、下地材（１００）に貫通孔（１１０）を形成した後、穿孔刃（６）を後退させて下地材（１００）から穿孔刃（６）を引き抜くことが困難となる。その結果、板材への貫通孔形成及び貫通孔加工における作業効率が低下する虞があった。   In the piercing device of Patent Document 1, when the piercing blade (6) penetrates the base material (100) and pierces the through hole (110), the flange (16) at the base end of the piercing blade (6) is used. The drilling blade (6) is advanced until it presses against the periphery of the through hole. That is, at the time of drilling, the drilling blade (6) enters deep into the through hole (110) and drills, so that the drilling blade (6) fits into the through hole (110), and the drilling blade (6) and the substrate It is easy to firmly bond with the material (100). In particular, when drilling, the edge of the through hole tightens the drilling blade (6) by springback. Therefore, after forming the through hole (110) in the base material (100), it is difficult to retract the perforation blade (6) and pull out the perforation blade (6) from the base material (100). As a result, there is a possibility that the working efficiency in forming the through-hole in the plate material and processing the through-hole may be reduced.

本発明は、上記課題を解決するためになされたものであり、その目的は、より簡単且つ迅速に、板材に貫通孔を形成し、及び／又は、該貫通孔に保護具を取着することを可能とする穿孔工具及び貫通孔加工装置を提供することにある。   The present invention has been made to solve the above problems, and an object of the present invention is to form a through hole in a plate material and / or attach a protective device to the through hole more easily and quickly. It is an object of the present invention to provide a drilling tool and a through-hole processing device that enable the drilling.

本発明の一形態の穿孔工具は、板材に貫通孔を穿設するための穿孔工具であって、
穿孔工具本体と、
前記穿孔工具本体に前後方向に可動式に支持され、前進して前記板材を表面側から打ち抜き可能な穿孔刃と、
前記穿孔刃の後退移動に伴って前記穿孔刃の先端側に相対移動する後退補助部と、
を備え、
前記穿孔刃で前記板材を打ち抜いた後の前記穿孔刃の後退移動の際、前記後退補助部が前記板材の表面に係合し、前記穿孔刃の前記貫通孔からの後退を補助することを特徴とする。 A drilling tool according to one embodiment of the present invention is a drilling tool for drilling a through hole in a plate material,
Drilling tool body,
A piercing blade that is movably supported in the front-rear direction by the piercing tool main body and is capable of advancing and punching the plate material from the surface side,
With the retreating movement of the drilling blade, a retreating assisting part that relatively moves to the tip side of the drilling blade,
With
When the punching blade retreats after punching the plate material with the punching blade, the retreat assisting portion engages with the surface of the plate material and assists the retraction of the punching blade from the through hole. And

本発明のさらなる形態の穿孔工具は、上記穿孔工具において、前記後退補助部は、前記穿孔刃の前進に伴って前記板材に近接し、且つ、前記穿孔刃の後退移動の際に前記穿孔刃とともに後退移動することなく前記板材表面に係合することを特徴とする。 Drilling of a further embodiment of the present invention, in the above-mentioned drilling tool, said retraction auxiliary unit, with the advancement of the drilling blade in proximity to the plate, and, together with the perforating blade during backward movement of the cutting head It engages with the surface of the plate material without retreating.

本発明のさらなる形態の穿孔工具は、上記穿孔工具において、前記後退補助部は、前記穿孔刃の移動に追従するように前記穿孔刃に外装された筒体であり、且つ、前記筒体が係止されたときに前記穿孔刃が前記筒体に対して相対移動可能であり、
前記穿孔刃の後退移動の際に前記後退補助部が前記穿孔工具本体に係止されることで前記穿孔刃に対して前記穿孔刃の先端側に相対移動し、前記筒体の前端面が前記板材に係合することを特徴とする。 Drilling of a further embodiment of the present invention, in the above-mentioned drilling tool, said retraction auxiliary section is the sheathed in the cutting head a cylindrical body so as to follow the movement of the cutting head, and the cylinder is engaged When stopped, the piercing blade is relatively movable with respect to the cylindrical body,
When the drilling blade is moved backward, the retreating assist portion is locked to the drilling tool main body to relatively move toward the tip side of the drilling blade with respect to the drilling blade, and the front end surface of the tubular body is It is characterized by engaging with a plate material.

本発明のさらなる形態の穿孔工具は、上記穿孔工具において、前記穿孔刃の基端近傍には、前記貫通孔に圧入される環状の保護具を外装保持する保持部をさらに備え、前記穿孔刃の前進により前記貫通孔を形成した後、さらなる前記穿孔刃の前進によって前記保護具が前記貫通孔に圧入されるように構成され、
前記筒体は、前記保持部への前記保護具の装填の際に手指が入る切り欠きが設けられていることを特徴とする。 Drilling of a further embodiment of the present invention, in the above-mentioned drilling tool, the base end vicinity of the cutting head further comprises a holding portion for sheathing holding the protection ring to be press-fitted into the through hole, the hole punch bit After forming the through-hole by advancing, the protection device is configured to be pressed into the through-hole by further advancing of the drilling blade,
The cylindrical body is provided with a notch through which a finger can enter when the protection device is loaded into the holding unit.

本発明のさらなる形態の穿孔工具は、上記穿孔工具において、前記後退補助部は、前記穿孔工具本体の一部を構成するとともに後退した前記穿孔刃の周囲で延在する壁部
であり、前記壁部の当接面は、前記穿孔刃を前進させたときに前記穿孔刃の後方に位置し、且つ、前記穿孔刃を後退させたときに前記穿孔刃の先端側に相対移動して前記板材表面に係合可能であることを特徴とする。 Drilling of a further embodiment of the present invention, in the above-mentioned drilling tool, said retraction auxiliary section is a wall portion extending around said piercing blade has been retracted with constituting a part of the drilling tool body, the wall The contact surface of the portion is located behind the perforation blade when the perforation blade is advanced, and moves relatively to the tip side of the perforation blade when the perforation blade is retracted, and the plate material surface Characterized in that it can be engaged with the.

本発明のさらなる形態の穿孔工具は、上記記載の穿孔工具において、前記後退補助部の前記板材に係合する面は、前記穿孔刃を少なくとも完全に後退させた際に、前記穿孔刃の先端の前方に位置することを特徴とする。 A drilling tool according to a further aspect of the present invention is the drilling tool according to the above , wherein the surface of the retreating assisting portion that engages with the plate member has a tip of the drilling blade when the drilling blade is at least completely retracted. It is characterized by being located in front.

本発明のさらなる形態の穿孔工具は、上記穿孔工具において、前記後退補助部は、前記穿孔工具本体に可動式に支持され、前記板材の表面に対向するように出没可能な出没体であり、前記出没体には、前記板材表面に前記穿孔工具本体又は前記穿孔刃を近接させた際に前記板材の表面に当接する当接部が設けられていることを特徴とする。 Drilling of a further embodiment of the present invention, in the above-mentioned drilling tool, said retraction auxiliary unit is movably supported on the drilling tool body, a retractable retractable member so as to face the surface of the plate, the The retractable body is provided with a contact portion that comes into contact with the surface of the plate material when the drilling tool body or the drilling blade approaches the surface of the plate material.

本発明のさらなる形態の穿孔工具は、上記穿孔工具において、前記穿孔工具本体には、前記板材を挟み込み可能に前記穿孔刃に対向配置され、前記穿孔刃を受け入れ可能な開口を備える受け部が設けられていることを特徴とする。 Drilling of a further embodiment of the present invention, in the above-mentioned drilling tool, wherein the drilling tool body, is opposed to allow the said punching blade sandwiching the plate material, receiving unit with the possible opening receiving said piercing blades provided It is characterized by having been done.

本発明の一形態の貫通孔加工装置は、
穿孔工具と、
前記貫通孔に圧入される環状の保護具と、を備え、
前記穿孔工具は、
前記穿孔刃と連動して進退し、前記保護具先端が前記穿孔刃の剪断部よりも後方に位置するように前記保護具を前記穿孔刃に外装保持する保持部と、
前記穿孔刃に対向するように前記穿孔工具本体に形成され、前記穿孔刃とともに前記保持部に保持された前記保護具を受け入れ可能な開口を備える受け部と、をさらに備え、
前記穿孔刃の前進により前記貫通孔を形成した後、さらなる前記穿孔刃の前進によって前記保護具が前記貫通孔に圧入されるように構成され、
前記穿孔刃で前記板材を打ち抜いて前記貫通孔に前記保護具を圧入した後の前記穿孔刃の後退移動の際、前記後退補助部が前記板材の表面に係合し、前記保護具を取着した前記貫通孔からの前記穿孔刃の後退を補助することを特徴とする。 The through-hole processing apparatus according to one aspect of the present invention includes :
And the puncture hole tool,
An annular protective device press-fitted into the through-hole,
The drilling tool,
A holding portion that moves forward and backward in conjunction with the perforation blade, and externally holds the protection tool on the perforation blade such that the tip of the protection tool is located behind a shearing portion of the perforation blade,
A receiving portion formed on the drilling tool main body so as to face the drilling blade, and having an opening capable of receiving the protective device held by the holding portion together with the drilling blade,
After forming the through-hole by the advancement of the drilling blade, the protection device is configured to be pressed into the through-hole by further advancement of the drilling blade,
When the drilling blade is punched out by the punching blade and the protective tool is pressed into the through hole and the drilling blade is moved backward, the retreating assisting portion engages with the surface of the plate material and attaches the protective tool. It is characterized by assisting the retraction of the drilling blade from the through hole.

本発明の一形態の穿孔工具によれば、穿孔刃の後退移動に伴って後退補助部が穿孔刃の先端側に相対移動することにより、貫通孔形成後の穿孔刃の後退移動の際、後退補助部が板材の表面に係合し、穿孔刃の板材からの後退を補助する。すなわち、穿孔刃の後退移動に伴って後退補助部が板材を穿孔刃の先端側に押し出すように作用することにより、穿孔刃と板材との結合を解除するように穿孔刃と板材とを効果的に分離することができる。したがって、本発明の穿孔工具は、板材への貫通孔形成における作業効率を改善するものである。 According to the drilling tool according to one aspect of the present invention, the retreating assist portion relatively moves to the tip side of the drilling blade with the retreating movement of the drilling blade, so that the retreating aid moves backward when the drilling blade is formed after the formation of the through-hole. The auxiliary portion is engaged with the surface of the plate, and assists the drilling blade to retract from the plate. In other words, the retreating assisting portion acts to push the plate material toward the distal end side of the drilling blade along with the retreating movement of the drilling blade, so that the drilling blade and the plate material are effectively combined so as to release the connection between the drilling blade and the plate material. Can be separated. Therefore, the drilling tool of the present invention improves the working efficiency in forming a through hole in a plate material.

本発明のさらなる形態の穿孔工具によれば、上記効果に加えて、後退補助部が穿孔刃の前進に伴って板材に近接することにより、貫通孔形成後の穿孔刃の後退移動の際、後退補助部が板材表面にすぐに係合して、穿孔刃を板材から迅速に離脱させることが可能である。 According to the drilling tool of a further aspect of the present invention, in addition to the above-described effects, the retreating assist portion moves closer to the plate with the advancement of the drilling blade, so that when the drilling blade retreats after the formation of the through-hole, the drilling tool retreats. The auxiliary part can be immediately engaged with the plate material surface, and the drilling blade can be quickly separated from the plate material.

本発明のさらなる形態の穿孔工具によれば、上記発明の効果に加えて、後退補助部としての筒体が穿孔刃の前進に追従して板材に近接し、筒体の前端面が板材表面に当接する。該貫通孔形成後の穿孔刃の後退移動の際、筒体が穿孔工具本体に係合して穿孔刃が筒体に対して相対的に後退移動可能となる。筒体の前端面が板材表面に係合し、且つ、筒体が穿孔工具本体に係止された状態で穿孔刃が筒体に対してさらに後退すると、筒体が板材を穿
孔刃の先端側に押し出すように作用し、穿孔刃を板材から効果的に離脱させることが可能である。 According to the drilling tool of a further aspect of the present invention, in addition to the effects of the above invention, the cylindrical body as the retreat assisting part follows the advance of the drilling blade and approaches the plate material, and the front end surface of the cylindrical body is on the plate material surface. Abut When the drilling blade is moved backward after the formation of the through hole, the cylindrical body is engaged with the drilling tool main body, and the drilling blade can be moved backward relative to the cylindrical body. When the front end face of the cylindrical body is engaged with the surface of the plate material, and the drilling blade is further retracted with respect to the cylindrical body in a state where the cylindrical body is locked to the drilling tool body, the cylindrical body moves the plate material toward the distal end of the drilling blade. And the punching blade can be effectively separated from the plate material.

本発明のさらなる形態の穿孔工具によれば、上記発明の効果に加えて、板材に貫通孔を形成するとともに該貫通孔に保護具を圧入した後の穿孔刃の後退移動の際、筒体が板材を穿孔刃の先端側に押し出すように作用し、穿孔刃を板材から効果的に分離させることが可能である。さらには、筒体に形成された切り欠きを介して、保護具を保持部に簡単に装填可能である。 According to a drilling tool according to a further aspect of the present invention, in addition to the effects of the above-described invention, a tubular body is formed at the time of retreating the drilling blade after forming a through-hole in the plate material and press-fitting the protective tool into the through-hole. It acts to push the plate material to the tip side of the drilling blade, and it is possible to effectively separate the drilling blade from the plate material. Furthermore, the protection device can be easily loaded into the holding unit through the notch formed in the cylindrical body.

本発明のさらなる形態の穿孔工具によれば、上記発明の効果に加えて、後退補助部としての壁部の当接面は、板材を穿孔するときに穿孔刃の後方に位置し、穿孔刃を後退させたときに穿孔刃の先端側に相対移動して板材表面に係合可能である。すなわち、貫通孔形成後の穿孔刃の後退移動の際、壁部の当接面が板材表面に係合し、この係合状態でさらに穿孔刃が後退移動すると、板材のみが壁部当接面に係止されることで、壁部当接面が板材を穿孔刃の先端側に押し出すように作用し、穿孔刃を板材から効果的に離脱させることが可能である。 According to the drilling tool of a further aspect of the present invention, in addition to the effects of the above invention, the contact surface of the wall portion as the retreat assisting portion is located behind the drilling blade when drilling a plate material, and When it is retracted, it can move relatively to the tip side of the perforation blade and engage with the plate material surface. That is, when the drilling blade is moved backward after the formation of the through-hole, the contact surface of the wall engages with the surface of the plate material, and when the drilling blade further moves backward in this engaged state, only the plate material contacts the wall contact surface. , The wall contact surface acts to push the plate material toward the tip of the drilling blade, and the drilling blade can be effectively separated from the plate material.

本発明のさらなる形態の穿孔工具によれば、上記発明の効果に加えて、後退補助部の板材に係合する面が、穿孔刃を少なくとも完全に後退させた際に穿孔刃の先端の前方に位置する。これにより、穿孔刃を後退させた状態で穿孔刃の刃先を板材に不意にぶつけて、板材を傷付けることを防止することが可能である。 According to the drilling tool of a further aspect of the present invention, in addition to the effects of the above invention, the surface of the retreating assisting portion that engages with the plate material is located at the front of the tip of the drilling blade when the drilling blade is at least completely retracted. To position. This makes it possible to prevent the cutting edge of the drilling blade from accidentally hitting the plate material with the drilling blade retracted, thereby preventing the plate material from being damaged.

本発明のさらなる形態の穿孔工具によれば、上記発明の効果に加えて、板材表面に本体又は穿孔刃を近接させた際に出没体が板材の表面に対向する側に出現し、当接部が板材の表面に当接する。すなわち、貫通孔形成後の穿孔刃の後退移動の際、後退補助部としての出没体が板材に当接又は係合した状態で、穿孔刃が出没体に対して後退すると、板材のみが出没体の当接部に係止されることで、出没体の当接部が板材を穿孔刃の先端側に押し出すように作用し、穿孔刃を板材から効果的に離脱させることが可能である。 According to the drilling tool of a further aspect of the present invention, in addition to the effects of the above invention, when the main body or the drilling blade is brought close to the plate material surface, the retractable body appears on the side facing the surface of the plate material, and the contact portion Abuts on the surface of the plate. That is, at the time of the retreat movement of the drilling blade after the formation of the through-hole, when the drilling blade retreats with respect to the retractable body in a state where the retractable body as the retreat assisting part is in contact with or engaged with the plate material, only the plate material is retracted. The contact portion of the retractable body acts to push the plate material toward the distal end side of the drilling blade, and the drilling blade can be effectively separated from the plate material.

本発明のさらなる形態の穿孔工具によれば、上記発明の効果に加えて、穿孔刃に対向配置された開口を有する受け部が筒刃として働いて、穿孔刃と受け部との間で板材を狭圧することにより、板材に貫通孔を簡単に形成することが可能である。 According to the drilling tool of a further aspect of the present invention, in addition to the effects of the above-described invention, the receiving portion having the opening arranged opposite to the drilling blade acts as a cylindrical blade, and the plate material is formed between the drilling blade and the receiving portion. By narrowing the pressure, it is possible to easily form a through hole in the plate material.

本発明の一形態の貫通孔加工装置によれば、上記穿孔工具の効果を貫通孔加工装置として発揮することができる。すなわち、穿孔刃の後退移動に伴って後退補助部が板材を穿孔刃の先端側に押し出すように作用することにより、穿孔刃を板材及び保護具から効果的に離脱させることができる。したがって、本発明の穿孔工具は、板材の貫通孔形成及び該貫通孔への保護具の取着における作業効率を改善するものである。 According to one embodiment of the through-hole processing apparatus of the present invention, it is possible to exhibit the effect of the drilling tool as a through hole processing device. That is, the retreating assisting portion acts to push out the plate material to the tip side of the drilling blade as the drilling blade moves backward, whereby the drilling blade can be effectively separated from the plate material and the protective device. Therefore, the drilling tool of the present invention improves the working efficiency in forming a through hole in a plate material and attaching a protective device to the through hole.

本発明に係る一実施形態の穿孔工具（穿孔刃が後退した状態）の概略斜視図。1 is a schematic perspective view of a drilling tool according to an embodiment of the present invention (a state in which a drilling blade is retracted). 図１の穿孔工具の（ａ）正面図、（ｂ）側面図及び（ｃ）平面図。The (a) front view, (b) side view, and (c) top view of the drilling tool of FIG. 図２の穿孔工具の部分拡大Ａ−Ａ断面図。FIG. 3 is a partially enlarged cross-sectional view taken along the line AA of the drilling tool in FIG. 2. 図２の穿孔工具の部分拡大Ｂ−Ｂ断面図。FIG. 3 is a partially enlarged BB cross-sectional view of the drilling tool in FIG. 2. 図１の穿孔工具の（ａ）受け部の部分拡大斜視図及び（ｂ）穿孔刃の部分拡大斜視図。2A is a partially enlarged perspective view of a receiving portion of the drilling tool of FIG. 1 and FIG. 2B is a partially enlarged perspective view of a drilling blade. 本発明に係る一実施形態の穿孔工具（穿孔刃が前進した状態）の概略斜視図。BRIEF DESCRIPTION OF THE DRAWINGS The schematic perspective view of the drilling tool (state in which the drilling blade advanced) of one Embodiment which concerns on this invention. 図６の穿孔工具の（ａ）正面図、（ｂ）側面図及び（ｃ）平面図。(A) Front view, (b) Side view, and (c) Top view of the drilling tool of FIG. 図７の穿孔工具の部分拡大Ｃ−Ｃ断面図。FIG. 8 is a partially enlarged CC cross-sectional view of the drilling tool in FIG. 7. 図７の穿孔工具の部分拡大Ｄ−Ｄ断面図。FIG. 8 is a partially enlarged DD sectional view of the drilling tool in FIG. 7. 本発明に係る一実施形態の貫通孔加工装置の保護具の（ａ）斜視図、（ｂ）正面図、（ｃ）平面図及び（ｃ）Ｅ−Ｅ断面図。The (a) perspective view, the (b) front view, the (c) top view, and the (c) EE sectional drawing of the protective equipment of the through-hole processing apparatus of one Embodiment which concerns on this invention. 本発明に係る一実施形態の貫通孔加工装置の部分拡大斜視図。FIG. 1 is a partially enlarged perspective view of a through hole processing apparatus according to an embodiment of the present invention. 本実施形態の貫通孔加工装置で下地材を加工する一連の工程を示した模式図。FIG. 4 is a schematic view showing a series of steps for processing a base material with the through-hole processing apparatus of the embodiment. 本実施形態の貫通孔加工装置において穿孔刃が下地材に当接した形態の概略断面図。FIG. 4 is a schematic cross-sectional view of a form in which a drilling blade is in contact with a base material in the through-hole processing device of the present embodiment. 本実施形態の貫通孔加工装置において保護具先端が下地材の貫通孔周縁に当接した形態の概略断面図。FIG. 4 is a schematic cross-sectional view of a through hole processing apparatus according to the present embodiment, in which a tip of a protector is in contact with a peripheral edge of a through hole of a base material. 本実施形態の貫通孔加工装置において保護具が貫通孔に進入した形態の概略断面図。FIG. 4 is a schematic cross-sectional view of a form in which a protective device has entered a through hole in the through hole processing apparatus of the present embodiment. 本実施形態の貫通孔加工装置において保護具圧入後、筒体後端面が穿孔工具本体に当接するまで圧接体を後退させた形態の概略断面図。FIG. 5 is a schematic cross-sectional view of a mode in which the press-contact body is retracted until the rear end surface of the cylindrical body comes into contact with the boring tool main body after press-fitting of the protector in the through-hole processing apparatus of the embodiment. 本実施形態の貫通孔加工装置において保護具圧入後、圧接体を完全に後退させた形態の概略断面図。FIG. 4 is a schematic cross-sectional view of a form in which the press-contact body is completely retracted after press-fitting of the protector in the through-hole processing apparatus of the present embodiment. 本実施形態の貫通孔加工装置で加工した加工済下地材の（ａ）平面図、（ｂ）底面図、及び（ｃ）Ｆ−Ｆ断面図。The (a) top view, the (b) bottom view, and (c) FF sectional drawing of the processed base material processed by the through-hole processing apparatus of this embodiment. 本発明に係る別実施形態（第２実施形態）の穿孔工具において、穿孔刃を下地材から離脱させる各工程を示す概略断面図。FIG. 7 is a schematic cross-sectional view showing each step of separating a drilling blade from a base material in a drilling tool according to another embodiment (second embodiment) according to the present invention. 本発明に係る別実施形態（第３実施形態）の穿孔工具において、穿孔刃を下地材から離脱させる各工程を示す概略断面図。FIG. 9 is a schematic cross-sectional view showing each step of separating a drilling blade from a base material in a drilling tool according to another embodiment (third embodiment) according to the present invention. 本発明に係る別実施形態（第４実施形態）の穿孔工具において、穿孔刃で下地材に穿孔する各工程を示す概略断面図。FIG. 13 is a schematic cross-sectional view showing each step of piercing a base material with a piercing blade in a piercing tool according to another embodiment (fourth embodiment) according to the present invention. 本発明に係る別実施形態（第４実施形態）の穿孔工具において、穿孔刃を下地材から離脱させる各工程を示す概略断面図。FIG. 13 is a schematic cross-sectional view showing each step of separating a drilling blade from a base material in a drilling tool according to another embodiment (fourth embodiment) according to the present invention.

以下、本発明の一実施形態について図面を参照しつつ説明する。なお、以下の説明において参照する各図の形状は、好適な形状寸法を説明する上での概念図又は概略図であり、寸法比率等は実際の寸法比率とは必ずしも一致しない。つまり、本発明は、図面における寸法比率に限定されるものではない。なお、実施形態の説明では、便宜上、図面の記載に合わせて、穿孔刃の前進方向を「上方」又は「前方」と称し、後退方向を「下方」又は「後方」と称する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. It should be noted that the shape of each drawing referred to in the following description is a conceptual diagram or a schematic diagram for describing a suitable shape and size, and the dimensional ratio and the like do not always match the actual dimensional ratio. That is, the present invention is not limited to the dimensional ratios in the drawings. In the description of the embodiment, for the sake of convenience, the forward direction of the drilling blade is referred to as “upward” or “front”, and the retracting direction is referred to as “downward” or “rearward” in accordance with the description of the drawings.

本実施形態の貫通孔加工装置１０は、板材（加工対象）である下地材Ｔに貫通孔Ｈを穿設するとともに、貫通孔Ｈ端面から配線・配管材を保護する保護具１５０を貫通孔Ｈに取り付けることに用いられる。貫通孔加工装置１０は、下地材Ｔに貫通孔Ｈを穿設するための穿孔工具１００、及び、貫通孔Ｈに圧入される環状の保護具１５０（図１０参照）を備えてなる。後述するように、穿孔工具１００の受け部１３０と穿孔刃１２１との間に下地材Ｔが挟み込まれ、受け部１３０の第１開口１３２に穿孔刃１２１とともに保護具１５０が進入することにより、下地材Ｔに貫通孔Ｈを形成するとともに保護具１５０が貫通孔Ｈに取着される。本実施形態では、下地材Ｔは、壁や天井の裏面に下地として設置される断面視略コ字状の長尺の鋼板である。該下地材Ｔは、底壁及び該底壁の幅方向両側から立設した側壁を備える。さらに、側壁先端が内方及び下方に略直角に折り曲げられている。   The through-hole processing apparatus 10 according to the present embodiment includes a through-hole H formed in a base material T, which is a plate material (a processing target), and a protector 150 that protects a wiring / piping material from an end surface of the through-hole H. Used to attach to. The through-hole processing apparatus 10 includes a drilling tool 100 for drilling a through-hole H in the base material T, and an annular protector 150 (see FIG. 10) that is press-fitted into the through-hole H. As will be described later, the base material T is sandwiched between the receiving portion 130 of the drilling tool 100 and the drilling blade 121, and the protection tool 150 enters the first opening 132 of the receiving portion 130 together with the drilling blade 121, thereby forming the base material. The through hole H is formed in the material T, and the protector 150 is attached to the through hole H. In the present embodiment, the base material T is a long steel plate having a substantially U-shape in cross section, which is installed as a base on the back surface of a wall or a ceiling. The base material T includes a bottom wall and side walls erected from both sides in the width direction of the bottom wall. Further, the end of the side wall is bent inward and downward at a substantially right angle.

まず、図１乃至図９を参照して、本実施形態の穿孔工具１００を詳細に説明する。図１は、穿孔工具１００の穿孔刃１２１が後退した姿勢の概略斜視図である。図２は、（ａ）、（ｂ）、（ｃ）は、後退姿勢の穿孔工具１００の正面図、側面図及び平面図である。図３は、図２のＡ−Ａ断面図である。図４は、図２のＢ−Ｂ断面図である。図５（ａ）、（ｂ）は、穿孔工具１００の受け部１３０及び部分的に前進した穿孔刃１２１の部分拡大斜
視図である。図６は、一実施形態の穿孔工具１００の穿孔刃１２１が前進した姿勢の概略斜視図である。図７（ａ）、（ｂ）、（ｃ）は、前進姿勢の穿孔工具１００の正面図、側面図及び平面図である。図８は、図７のＣ−Ｃ断面図である。図９は、図７のＤ−Ｄ断面図である。 First, the drilling tool 100 according to the present embodiment will be described in detail with reference to FIGS. FIG. 1 is a schematic perspective view of a posture in which the drilling blade 121 of the drilling tool 100 is retracted. 2A, 2B, and 2C are a front view, a side view, and a plan view of the drilling tool 100 in the retracted posture. FIG. 3 is a sectional view taken along line AA of FIG. FIG. 4 is a sectional view taken along line BB of FIG. FIGS. 5A and 5B are partially enlarged perspective views of the receiving portion 130 of the drilling tool 100 and the drilling blade 121 partially advanced. FIG. 6 is a schematic perspective view showing a posture in which the drilling blade 121 of the drilling tool 100 of one embodiment has advanced. FIGS. 7A, 7B, and 7C are a front view, a side view, and a plan view of the drilling tool 100 in the forward posture. FIG. 8 is a sectional view taken along the line CC of FIG. FIG. 9 is a sectional view taken along the line DD of FIG.

図１乃至図４に示すように、本実施形態の穿孔工具１００は、穿孔工具本体１１０と、該穿孔工具本体１１０に対して上下（前後）方向に相対移動可能に保持された圧接体１２０と、該圧接体１２０と対向するように穿孔工具本体１１０に固定された受け部１３０と、圧接体１２０を駆動操作するように穿孔工具本体１１０に支持された可動ハンドル１４０と、圧接体１２０と可動ハンドル１４０との間に介在し、該可動ハンドル１４０に加わった力を圧接体１２０に効率的に伝達するリンク機構と、を備える。後述するとおり、リンク機構は、複数の部材及び構成要素（第１軸部１２５、第２軸部１２６、係合部材１４１）によって集合的に構成された機構である。   As shown in FIGS. 1 to 4, the drilling tool 100 according to the present embodiment includes a drilling tool main body 110 and a pressure contact body 120 which is held so as to be relatively movable in the up-down (front-back) direction with respect to the drilling tool main body 110. A receiving portion 130 fixed to the drilling tool main body 110 so as to face the pressure contact body 120; a movable handle 140 supported by the drilling tool body 110 to drive the pressure contact body 120; And a link mechanism interposed between the handle 140 and the transmission mechanism for efficiently transmitting the force applied to the movable handle 140 to the pressure contact body 120. As will be described later, the link mechanism is a mechanism collectively configured by a plurality of members and components (the first shaft portion 125, the second shaft portion 126, and the engagement member 141).

穿孔工具本体１１０は、支持フレーム１１１と、該支持フレーム１１１から下方に延設された保持ハンドル１１８とからなる。支持フレーム１１１は、圧接体１２０、受け部１３０及び可動ハンドル１４０を支持するように構成されている。支持フレーム１１１は、図２（ａ）の正面視において、板状の矩形部分と、該矩形部分の右側上端から左側に湾曲して延びるアーム部分とが組み合わさってなる。   The drilling tool main body 110 includes a support frame 111 and a holding handle 118 extending downward from the support frame 111. The support frame 111 is configured to support the press body 120, the receiving portion 130, and the movable handle 140. The support frame 111 is formed by combining a plate-shaped rectangular portion and an arm portion that extends to the left from the upper right end of the rectangular portion as viewed from the front in FIG.

図３に示すとおり、支持フレーム１１１の矩形部分には、該支持フレーム１１１を上下方向に貫通して延びる駆動路としての中空部１１２が穿設されている。該中空部１１２は、前後に延びる筒状の中空空間である。該中空部１１２には、圧接体１２０の基部（又は基軸）１２２が支持フレーム１１１に対して上下（軸方向）に相対移動可能に挿通されている。中空部１１２は、正面方向及び背面方向に部分的に開放されている。すなわち、穿孔工具本体１１０の正面及び裏面の両側において、中空部１１２に沿って該中空部１１２の径よりも細幅の案内溝１１３が延在している。該案内溝１１３は、中空部１１２の幅方向略中央に位置するように該中空部１１２に連通している。そして、該案内溝１１３は、圧接体１２０の第１軸部１２５及び第２軸部１２６を内挿して圧接体１２０の前後方向の移動をガイドするように機能する。また、この案内溝１１３を介して基部１２２の一部を正面及び背面から視認することができる。   As shown in FIG. 3, a hollow portion 112 is formed in a rectangular portion of the support frame 111 as a drive path extending vertically through the support frame 111. The hollow portion 112 is a cylindrical hollow space extending back and forth. A base portion (or base shaft) 122 of the press-contact body 120 is inserted into the hollow portion 112 so as to be vertically movable (axially) with respect to the support frame 111. The hollow portion 112 is partially open in the front and back directions. That is, guide grooves 113 having a width smaller than the diameter of the hollow part 112 extend along the hollow part 112 on both sides of the front surface and the rear surface of the drilling tool main body 110. The guide groove 113 communicates with the hollow portion 112 so as to be located substantially at the center of the hollow portion 112 in the width direction. The guide groove 113 functions to guide the movement of the press body 120 in the front-rear direction by inserting the first shaft portion 125 and the second shaft portion 126 of the press body 120. In addition, a part of the base 122 can be visually recognized from the front and back through the guide groove 113.

また、図３に示すように、中空筒部１１２の内壁には、上下方向（中空筒部１１２の延伸方向）に直交するように収容凹部１１４が凹設されている。該収容凹部１１４は、中空筒部１１２側に開口し、その開口の反対端に底面を有する。そして、収容凹部１１４には、バネ部材１１５が収容されて該バネ部材１１５の基端が底面に接している。さらに、収容凹部１１４には、バネ部材１１５の先端に接するように略球状の係止体１１６が収容されている。該係止体１１６は、バネ部材１１５を収縮方向に弾性変形するように作用する。すなわち、係止体１１６は、バネ部材１１５の弾性力によって、収容凹部１１４の開口を介して中空部１１２に出没可能に配置されている。   As shown in FIG. 3, a housing recess 114 is provided on the inner wall of the hollow cylindrical portion 112 so as to be orthogonal to the vertical direction (extending direction of the hollow cylindrical portion 112). The housing recess 114 opens to the hollow cylinder 112 side, and has a bottom surface at an end opposite to the opening. A spring member 115 is housed in the housing recess 114, and the base end of the spring member 115 is in contact with the bottom surface. Further, a substantially spherical locking body 116 is housed in the housing recess 114 so as to be in contact with the tip of the spring member 115. The locking body 116 acts to elastically deform the spring member 115 in the contraction direction. That is, the locking body 116 is arranged so as to be able to protrude and retract into the hollow portion 112 through the opening of the housing recess 114 by the elastic force of the spring member 115.

そして、支持フレーム１１１の矩形部分には、可動ハンドル１４０を回動式に軸支するための回動軸１１７が設けられている。この回動軸１１７は、穿孔工具本体１１０内で動かない（相対移動しない）ように位置している。該回動軸１１７は、中空部１１２（案内溝１１３）から側方に離隔して位置し、穿孔工具本体１１０を正面から背面に貫通している。   A rotating shaft 117 for pivotally supporting the movable handle 140 is provided on a rectangular portion of the support frame 111. The rotation shaft 117 is positioned so as not to move (relatively move) in the drilling tool main body 110. The rotation shaft 117 is positioned laterally apart from the hollow portion 112 (the guide groove 113), and penetrates the drilling tool main body 110 from the front to the back.

さらに、保持ハンドル１１８は、支持フレーム１１１の下端に固定され、下方に直状に延び出ている。保持ハンドル１１８の下端近傍には、作業者が把持可能なグリップが設けられている。作業者は、この保持ハンドル１１８のグリップを把持しながら、可動ハンド
ル１４０を操作することにより、下地材Ｔへの加工作業を行うことができる。 Further, the holding handle 118 is fixed to the lower end of the support frame 111 and extends straight downward. A grip that can be gripped by an operator is provided near the lower end of the holding handle 118. The operator can work on the base material T by operating the movable handle 140 while holding the grip of the holding handle 118.

圧接体１２０は、その先端に配置された穿孔刃１２１と、該穿孔刃１２１を前進及び後退させるように前後方向に駆動される軸状の基部１２２と、該穿孔刃１２１と連動して進退し、保護具１５０を保持する保持部（柱状部１２１ｃ，鍔部１２１ｄ）とを備えてなる。   The press-contact body 120 has a drilling blade 121 disposed at its tip, a shaft-like base 122 driven in the front-rear direction so as to move the drilling blade 121 forward and backward, and moves forward and backward in conjunction with the drilling blade 121. And a holding portion (a columnar portion 121c and a flange portion 121d) for holding the protective device 150.

穿孔刃１２１は、下地材Ｔを表面から打ち抜き可能に構成されている。該穿孔刃１２１は、図５（ｂ）に示すように、平面視円形状を有するとともにその先端が尖った円柱体である。すなわち、穿孔刃１２１は、二股に尖った鋭利な先端部１２１ａ及び該先端部１２１ａの間の溝部１２１ｂからなる剪断部と、これら先端部１２１ａ及び溝部１２１ｂに連設された円柱状の柱状部１２１ｃと、該柱状部１２１ｃ基端で側方に張り出した鍔部１２１ｄと、鍔部１２１ｄの裏面から突出する連結部１２１ｅと、を備えてなる。すなわち、穿孔刃１２１の先端部１２１ａ及び溝部１２１ｂによって、下地材Ｔを直接打ち抜く剪断部が定められる。この剪断部の溝部１２１ｂは、略中央の直径上に形成されて略半円状に凹んでいる。この溝部１２１ｂによって、下地材Ｔに貫通孔Ｈを穿孔する際に切断片が折り曲げられるように下地材Ｔから切り取られる。そして、図３に示すように、穿孔刃１２１基端の鍔部１２１ｄ裏面から突出した連結部１２１ｅが基部１２２先端に埋設されることにより、穿孔刃１２１が基部１２２先端に固定されている。本実施形態では、穿孔刃１２１は、基部１２２先端面に穿設されたネジ孔に連結部１２１ｅを介して螺着されている。これにより、穿孔刃１２１が欠けたり、その切れ味が落ちた場合など、穿孔刃１２１のみを交換可能である。   The piercing blade 121 is configured to punch the base material T from the surface. As shown in FIG. 5B, the perforation blade 121 is a cylindrical body having a circular shape in a plan view and a sharp end. That is, the drilling blade 121 has a shearing portion including a sharp tip portion 121a that is sharply forked and a groove portion 121b between the tip portions 121a, and a columnar portion 121c that is connected to the tip portion 121a and the groove portion 121b. And a flange 121d projecting laterally at the base end of the columnar portion 121c, and a connecting portion 121e protruding from the back surface of the flange 121d. That is, the shearing part for directly punching the base material T is determined by the tip part 121a and the groove part 121b of the drilling blade 121. The groove 121b of the shearing portion is formed on a substantially central diameter and is substantially semicircularly concave. The grooves 121b are cut from the base material T so that the cut pieces are bent when the through-holes H are formed in the base material T. Then, as shown in FIG. 3, the drilling blade 121 is fixed to the distal end of the base 122 by embedding the connecting portion 121 e projecting from the rear surface of the flange 121 d at the proximal end of the drilling blade 121 at the distal end of the base 122. In the present embodiment, the drilling blade 121 is screwed into a screw hole drilled in the distal end surface of the base 122 via a connecting portion 121e. Thereby, when the drilling blade 121 is chipped or its sharpness drops, only the drilling blade 121 can be replaced.

また、穿孔刃１２１の基端側には、環状の保護具１５０（図１０参照）を保持可能な保持部が一体的に形成されている。該保持部は、穿孔刃１２１の柱状部１２１ｃ及び鍔部１２１ｄから構成されている。そして、保持部は、穿孔刃１２１と連動して進退し、保護具１５０先端（圧入部１５２）が穿孔刃１２１の剪断部１２１ａ，１２１ｂよりも後方に位置するように保護具１５０を穿孔刃１２１に一体的に外装保持する。すなわち、保護具１５０が鍔部１２１ｄに当接するまで柱状部１２１ｃに外挿されることで、保護具１５０が保持部によって保持される（図１１参照）。   Further, on the base end side of the perforation blade 121, a holding portion capable of holding the annular protective device 150 (see FIG. 10) is integrally formed. The holding portion includes a columnar portion 121c and a flange portion 121d of the drilling blade 121. Then, the holding unit advances and retreats in conjunction with the perforation blade 121, and moves the protection tool 150 so that the tip (press-fitting part 152) of the protection tool 150 is located behind the shearing parts 121 a and 121 b of the perforation blade 121. Externally. That is, the protector 150 is held by the holder by being extrapolated to the columnar portion 121c until the protector 150 contacts the flange 121d (see FIG. 11).

圧接体１２０（又は穿孔刃１２１）の基部１２２は、その先端に穿孔刃１２１を固定し、該穿孔刃１２１を前進及び後退させるように前後方向に駆動する。該基部１２２は、穿孔工具本体１１０の中空部１１２を貫通し、穿孔工具本体１１０に対して上下方向に相対移動可能に保持されている。つまり、基部１２２の長さが中空部１２２の貫通深さよりも長く、その先端及び／又は基端が中空部１２２の外側に延出可能である。そして、穿孔刃１２１の先端部１２１ａが受け部１３０の内方に進入するまで、基部１２２が前進可能に構成されている（図６乃至図９参照）。   The base 122 of the pressure contact body 120 (or the drilling blade 121) fixes the drilling blade 121 at its tip, and drives the drilling blade 121 in the front-rear direction so as to move forward and backward. The base 122 penetrates the hollow portion 112 of the drilling tool main body 110 and is held so as to be vertically movable relative to the drilling tool main body 110. That is, the length of the base 122 is longer than the penetration depth of the hollow part 122, and the distal end and / or the base end can extend outside the hollow part 122. The base 122 is configured to be able to move forward until the distal end 121a of the drilling blade 121 enters the inside of the receiving part 130 (see FIGS. 6 to 9).

また、圧接体１２０の基部１２２の外面には、図３に示すように、係止凹部１２７が凹設されている。該係止凹部１２７は、凹曲状の窪みであり、収容凹部１１４から中空部１１２内に突出（又は出現）した球状の係止体１１６を受容可能に構成されている。係止凹部１２７の窪みの深さは係止体１１６の径よりも小さい。本実施形態では、図５に示すように、係止体１１６は基部１２２の縮径部位として窪み状に設けられている。図３のような穿孔刃１２１が完全に後退した姿勢において、係止凹部１２７と収容凹部１１４とが合致し、これらが協働して係止体１１６を収容している。このとき、バネ部材１１５が弾性復帰により伸長し、係止体１１６が係止凹部１２７に付勢されている。当該弾性力による係止体１６及び係止凹部１２７の係合によって、基部１２２が当該位置で係止されている。その結果、可動ハンドル１４０は、保持ハンドル１１８に対して最大限離反した静止位置に仮止めされている。すなわち、収容凹部１１４、バネ部材１１５、係止体１１６及び
係止凹部１２７が協働して可動ハンドル１４０の仮保持手段を構成している。当該静止位置では、穿孔刃１２１先端と受け部１０３端面との間隔が保護具１５０の厚みよりも大きい。よって、穿孔刃１２１と受け部１０３との間に側方から保護具１５０を配置して、穿孔刃１２１の先端部１２１ａから保護具１５０を容易に外装させることが可能である。つまり、該可動ハンドル１４０の静止位置は、保護具１５０の装填位置としても定められている。 As shown in FIG. 3, a locking recess 127 is provided on the outer surface of the base 122 of the press-contact body 120. The locking concave portion 127 is a concave curved concave portion, and is configured to be able to receive the spherical locking body 116 protruding (or appearing) from the housing concave portion 114 into the hollow portion 112. The depth of the recess of the locking recess 127 is smaller than the diameter of the locking body 116. In the present embodiment, as shown in FIG. 5, the locking body 116 is provided in a concave shape as a reduced diameter portion of the base 122. In the posture in which the drilling blade 121 is completely retracted as shown in FIG. 3, the locking concave portion 127 and the housing concave portion 114 are aligned with each other, and cooperate to house the locking body 116. At this time, the spring member 115 is extended by the elastic return, and the locking body 116 is urged by the locking recess 127. The base 122 is locked at the position by the engagement between the locking body 16 and the locking recess 127 by the elastic force. As a result, the movable handle 140 is temporarily fixed at a stationary position that is maximally separated from the holding handle 118. That is, the housing recess 114, the spring member 115, the locking body 116, and the locking recess 127 cooperate to constitute a temporary holding means for the movable handle 140. At the rest position, the distance between the tip of the piercing blade 121 and the end face of the receiving portion 103 is larger than the thickness of the protective device 150. Therefore, it is possible to arrange the protector 150 from the side between the perforation blade 121 and the receiving portion 103, and easily protect the protector 150 from the distal end portion 121 a of the perforation blade 121. That is, the stationary position of the movable handle 140 is also determined as the loading position of the protector 150.

そして、当該静止位置にある可動ハンドル１４０を保持ハンドル１１８に対して近接方向に回動操作することにより、圧接体１２０が前進するとともに係合凹部１２７が前方（図３の上方）にスライドし、バネ部材１１５が弾性的に収縮しつつ係合凹部１２７から離脱する（例えば、図８参照）。このとき、該係止体１１６が球状であることから、係止体１１６は基部１２２外面を転がるように滑らかに前後方向に相対移動する。つまり、静止位置以外の箇所では、可動ハンドル１４０は、（穿孔工具１００の姿勢に応じて）その自重で鉛直下方に自由落下するように回動する。そして、基部１２２外面と係止体１１６との間の摩擦力が非常に小さいので、バネ部材１１５の弾性力が仮止めを解除するために必要な力を主に決定する。換言すると、バネ部材１１５の強度（弾性係数）が強い程、この仮止めが強力なものとなる。本実施形態では、静止位置において、少なくとも可動ハンドル１４０の自重による回動を規制し、且つ、当該規制を超える力が可動ハンドル１４０に加わった場合に、バネ部材１１５が収縮して係止体１１６が係合凹部１２７から離脱するように、バネ部材１１５の強度が定められている。ただし、バネ部材１１５の強度は任意に設定可能であり、保持ハンドル１１８の自重や穿孔工具１００に自重に耐えるように仮止め力を決定してもよい。なお、本実施形態では、バネ部材１１５の背部のねじ蓋を螺進退させることでバネ部材１１５が係止体１１６に作用する力の強度を調整することが可能である。   Then, by rotating the movable handle 140 at the stationary position in the approaching direction with respect to the holding handle 118, the press contact body 120 moves forward and the engaging recess 127 slides forward (upward in FIG. 3), The spring member 115 is detached from the engagement recess 127 while being elastically contracted (for example, see FIG. 8). At this time, since the locking body 116 is spherical, the locking body 116 relatively smoothly moves in the front-rear direction so as to roll on the outer surface of the base 122. That is, at a position other than the rest position, the movable handle 140 rotates so as to freely fall vertically downward by its own weight (according to the posture of the drilling tool 100). Since the frictional force between the outer surface of the base 122 and the locking body 116 is very small, the elastic force of the spring member 115 mainly determines the force required to release the temporary fixing. In other words, the higher the strength (elastic coefficient) of the spring member 115, the stronger this temporary fixing becomes. In the present embodiment, in the stationary position, at least the rotation of the movable handle 140 due to its own weight is regulated, and when a force exceeding the regulation is applied to the movable handle 140, the spring member 115 contracts and the locking member 116 The strength of the spring member 115 is determined so that the spring member 115 is disengaged from the engagement recess 127. However, the strength of the spring member 115 can be arbitrarily set, and the temporary fixing force may be determined so as to withstand the own weight of the holding handle 118 or the own weight of the drilling tool 100. In the present embodiment, it is possible to adjust the strength of the force acting on the locking body 116 by the spring member 115 by screwing the screw cover on the back of the spring member 115 forward and backward.

さらに、圧接体１２０の基部１２２の央部には、可動ハンドル１４０に該圧接体１２０を回動式に連結すべく、中空部１１２の外方に案内溝１１３を介して突出する（リンク機構の一部を構成する）第１軸部１２５及び第２軸部１２６が形成されている。第１軸部１２５及び第２軸部１２６は、基部１２２の延伸方向に直交するように該穿孔具１００の正面側及び背面側の両方にそれぞれ延伸している。第１軸部１２５及び第２軸部１２６は、駆動路（基部１２２）の中心線上に整列し、駆動路に沿って所定の間隔で互いに離隔している。第２軸部１２６は、第１軸部１２５の後方（図３の下方）に位置している。本実施形態では、第１軸部１２５は、穿孔刃１２１が下地材Ｔ表面に当接するまで前進した際に回動軸１１７との間隔ｗ１が最小となる基部１２２の位置に形成されている（図１２及び図１３参照）。他方、第２軸部１２５は、穿孔刃１２１に外装された保護具１５０先端が下地材Ｔの貫通孔Ｈ周縁に当接するまで前進した際に回動軸１１７との間隔ｗ２が最小となる基部１２２の位置に形成されている（図１２及び図１４参照）。そして、第１軸部１２５及び第２軸部１２６の間隔は、穿孔刃１２１の先端（先端部１２１ａ）から基端（鍔部１２１ｄ表面）までの距離に保護具１５０の厚みを差し引いたものである。つまり、第１軸部１２５と第２軸部１２６との間隔が穿孔刃１２１先端から保護具１５０先端までの距離と同じである。   Further, at the center of the base 122 of the press-contact body 120, it projects through the guide groove 113 to the outside of the hollow portion 112 in order to pivotally connect the press-contact body 120 to the movable handle 140 (the link mechanism). A first shaft portion 125 and a second shaft portion 126 (which constitute a part) are formed. The first shaft portion 125 and the second shaft portion 126 extend to both the front side and the back side of the piercing tool 100 so as to be orthogonal to the extending direction of the base 122. The first shaft portion 125 and the second shaft portion 126 are aligned on the center line of the drive path (base 122) and are separated from each other at a predetermined interval along the drive path. The second shaft portion 126 is located behind the first shaft portion 125 (downward in FIG. 3). In the present embodiment, the first shaft portion 125 is formed at the position of the base portion 122 where the interval w1 with the rotation shaft 117 is minimized when the drilling blade 121 moves forward until it contacts the surface of the base material T ( 12 and 13). On the other hand, the second shaft portion 125 is a base portion in which the distance w2 with the rotating shaft 117 is minimized when the tip of the protector 150 provided on the piercing blade 121 is advanced until it contacts the periphery of the through hole H of the base material T. It is formed at a position 122 (see FIGS. 12 and 14). The distance between the first shaft portion 125 and the second shaft portion 126 is obtained by subtracting the thickness of the protective device 150 from the distance from the front end (the front end portion 121a) of the drilling blade 121 to the base end (the surface of the flange portion 121d). is there. That is, the distance between the first shaft portion 125 and the second shaft portion 126 is the same as the distance from the tip of the piercing blade 121 to the tip of the protective device 150.

そして、圧接体１２０の穿孔刃１２１外周を（部分的に）包囲するように、筒体１２９が外挿されている。筒体１２９は、図５（ｂ）に示すように、前後方向の両側に開口した周壁１２９ａと、該周壁１２９ａ外面に一体的に形成されたガイド片１２９ｆとを備えてなる。   The cylindrical body 129 is extrapolated so as to (partially) surround the outer periphery of the punching blade 121 of the press-contact body 120. As shown in FIG. 5B, the cylindrical body 129 includes a peripheral wall 129a opened on both sides in the front-rear direction, and a guide piece 129f integrally formed on an outer surface of the peripheral wall 129a.

周壁１２９ａは、略円筒形状を有し、その両開口端部に前端面１２９ｂ及び後端面１２９ｃを有する。該周壁１２９ａの先端面１２９ｂは、穿孔刃１２１と受け部１３０との間で対象（下地材Ｔ表面）に係合可能である。他方、周壁１２９ａの後端面１２９ｃは、穿
孔刃１２１の下方で支持フレーム１１１の矩形部分上面（穿孔工具本体１１０）に係合可能である。そして、周壁１２９ａは、穿孔刃１２１の鍔部１２１ｄの外周面に摺接するように外挿支持されている。これら周壁１２９ａ及び鍔部１２１ｄは互いに上下方向（進退方向）に摺動可能である。図３に示すように、周壁１２９の前端面１２９ｂ近傍の内周面が僅かに縮径し、前端側の開口の径が鍔部１２１ｄの径よりも小さくなっている。これにより、周壁１２９の前端側の開口端縁と鍔部１２１ｄ表面とが互いに係合（又は係止）可能である。すなわち、筒体１２９は、上記鍔部１２１ｄとの係合関係により穿孔刃１２１とともに進退方向に移動可能である。他方、穿孔刃１２１の後退時に筒体１２９が穿孔工具本体１１０に係止された場合には、筒体１２９及び穿孔刃１２１が互いに相対移動する。換言すれば、穿孔刃１２１は、筒体１２９から出没可能に配置されている。 The peripheral wall 129a has a substantially cylindrical shape, and has a front end face 129b and a rear end face 129c at both open ends. The distal end surface 129b of the peripheral wall 129a can be engaged with a target (the surface of the base material T) between the perforation blade 121 and the receiving portion 130. On the other hand, the rear end surface 129c of the peripheral wall 129a is engageable with the upper surface of the rectangular portion (the drilling tool main body 110) of the support frame 111 below the drilling blade 121. The peripheral wall 129a is externally supported so as to be in sliding contact with the outer peripheral surface of the flange 121d of the drilling blade 121. The peripheral wall 129a and the flange 121d are slidable in the up and down direction (forward and backward directions). As shown in FIG. 3, the inner peripheral surface near the front end surface 129b of the peripheral wall 129 is slightly reduced in diameter, and the diameter of the opening on the front end side is smaller than the diameter of the flange 121d. Thereby, the opening edge on the front end side of the peripheral wall 129 and the surface of the flange 121d can be engaged (or locked) with each other. That is, the cylindrical body 129 can move in the advancing and retreating direction together with the perforation blade 121 due to the engagement relationship with the flange 121d. On the other hand, when the cylinder 129 is locked to the drilling tool main body 110 when the drilling blade 121 is retracted, the cylinder 129 and the drilling blade 121 move relative to each other. In other words, the perforation blade 121 is disposed so as to be able to protrude and retract from the cylindrical body 129.

そして、周壁１２９ａの上下長さは、穿孔刃１２１の長さよりも長い。よって、図３に示すような穿孔刃１２１が後退した姿勢では、周壁１２９ａの後端面１２９ｃが支持フレーム１１１上面に当接し、且つ、前端面１２９ｂが穿孔刃１２１先端よりも前方に位置する。すなわち、穿孔刃１２１が後退した姿勢では、穿孔刃１２１全体（先端部１２１ａ〜鍔部１２１ｄ）が周壁１２９ａによって包囲されている。よって、該周壁１２９ａによって、穿孔刃１２１の刃先が不意に対象（下地材Ｔ）に当接しないように保護されている。   The vertical length of the peripheral wall 129a is longer than the length of the perforation blade 121. Therefore, in the posture in which the perforation blade 121 is retracted as shown in FIG. 3, the rear end surface 129c of the peripheral wall 129a contacts the upper surface of the support frame 111, and the front end surface 129b is located forward of the front end of the perforation blade 121. That is, in the posture in which the drilling blade 121 is retracted, the entire drilling blade 121 (the distal end portion 121a to the flange portion 121d) is surrounded by the peripheral wall 129a. Therefore, the peripheral wall 129a protects the cutting edge of the drilling blade 121 from unexpectedly coming into contact with the target (the base material T).

また、周壁１２９ａには、前端面１２９ｂから軸方向下方に切り欠かれた切り欠き部１２９ｄが形成されている。該切り欠き部１２９は、手指が入る程度の大きさを有し、保護具１５０を穿孔刃１２１の保持部に外装する際に役に立つ。さらに、周壁１２９ａには、その軸方向に沿って該周壁１２９ａを切断する切断部１２９ｅが形成されていることから、該切断部１２９ｅを介して周壁１２９ａは拡径方向に弾性変形可能である。切断部１２９ｅを開放して周壁１２９ｅを拡径させることにより、筒体１２９を穿孔刃１２１に対して着脱することが可能である。   Further, a cutout portion 129d is formed in the peripheral wall 129a so as to be cutout downward in the axial direction from the front end surface 129b. The cutout portion 129 has a size enough to allow a finger to enter, and is useful when the protective device 150 is provided on the holding portion of the perforation blade 121. Further, since the peripheral wall 129a is formed with a cut portion 129e for cutting the peripheral wall 129a along the axial direction, the peripheral wall 129a can be elastically deformed in the radially expanding direction via the cut portion 129e. By opening the cutting portion 129e and expanding the diameter of the peripheral wall 129e, the cylindrical body 129 can be attached to and detached from the perforation blade 121.

ガイド片１２９ｆは、一対の挟持板を有する。該ガイド片１２９ｆの挟持板で支持フレーム１１１のアーム部分を挟み込むことによって、ガイド片１２９ｆが穿孔工具本体１１０にスライド可能に支持されている。すなわち、穿孔刃１２１の進退に伴ってガイド片１２９ｆが支持フレーム１１１のリブに沿って上下にスライドする。つまり、ガイド片１２９ｆは、筒体１２９の上下方向の直進移動をガイドし、筒体１２９が穿孔刃１２１から外れたり、穿孔刃１２１を軸に回転することを抑えるように機能する。   The guide piece 129f has a pair of holding plates. The guide piece 129f is slidably supported by the drilling tool main body 110 by sandwiching the arm portion of the support frame 111 with the holding plate of the guide piece 129f. That is, the guide piece 129f slides up and down along the rib of the support frame 111 with the advance and retreat of the perforation blade 121. That is, the guide piece 129f functions to guide the vertical movement of the cylinder 129 in the vertical direction, and to prevent the cylinder 129 from coming off the drilling blade 121 or rotating around the drilling blade 121.

より詳細に後述するが、該筒体１２９は、穿孔刃１２１とともに前進可能であり、且つ、穿孔刃１２１で下地材Ｔを打ち抜いた後の穿孔刃１２１の後退移動の際、下地材Ｔ表面に係合し、穿孔刃１２１の貫通孔Ｈからの後退を補助する後退補助部として機能する。   As will be described in more detail later, the cylindrical body 129 can move forward together with the drilling blade 121, and when the drilling blade 121 retreats after punching the substrate T with the drilling blade 121, the cylindrical body 129 is placed on the surface of the substrate T. Engage and function as a retreat assisting part that assists the retreat of the drilling blade 121 from the through hole H.

受け部１３０は、軸方向に沿って前進する穿孔刃１２１を受け入れ可能な位置で穿孔工具本体１１０の支持フレーム１１１のアーム部分の上端に一体的に固定されている。受け部１３０は、図３及び図５（ａ）に示すように、中空の筒体であり、下地材Ｔの裏面側に配置される。該受け部１３０は、下地材Ｔの裏面を支持する筒状の受け部本体１３１を備える。受け部本体１３１は、基部１２２の同軸上に配置されている。換言すると、受け部本体１３１中心と基部１２２中心とが平面視において合致する。また、受け部本体１３１の軸方向両端が開放されており、受け部本体１３１の下端には、穿孔刃１２１に対向して下方に開口する第１開口１３２が形成されている。図３に示すように、筒状の受け部本体１３１の下端で、内壁が径方向の内側に張り出し、受け部本体１３１の下端面に第１開口１３２の周縁が定められている。他方、受け部本体１３１の上端には上方に開口した蓋体１３３が固定されている。   The receiving portion 130 is integrally fixed to the upper end of the arm portion of the support frame 111 of the drilling tool main body 110 at a position where the drilling blade 121 that advances in the axial direction can be received. The receiving portion 130 is a hollow cylindrical body and is disposed on the back surface side of the base material T, as shown in FIGS. 3 and 5A. The receiving portion 130 includes a cylindrical receiving portion main body 131 that supports the back surface of the base material T. The receiving section main body 131 is arranged coaxially with the base section 122. In other words, the center of the receiving portion main body 131 and the center of the base 122 match in plan view. Further, both ends in the axial direction of the receiving portion main body 131 are open, and a first opening 132 is formed at a lower end of the receiving portion main body 131 so as to face the boring blade 121 and open downward. As shown in FIG. 3, at the lower end of the cylindrical receiving portion main body 131, the inner wall protrudes inward in the radial direction, and the lower end surface of the receiving portion main body 131 defines the periphery of the first opening 132. On the other hand, a lid 133 opened upward is fixed to the upper end of the receiving portion main body 131.

第１開口１３２は、穿孔刃１２１とともに保持部（柱状部１２１ｃ）に保持された保護
具１５０を受け入れ可能な大きさで構成されている。より具体的には、本実施形態では、第１開口１３２の径は、穿孔刃１２１の柱状部１２１ｃ及び鍔部１２１ｄでの外径よりも大きく、尚且つ、保護具１５０の最大外径よりも大きい。しかしながら、本発明は本実施形態に限定されず、第１開口は穿孔刃及び保護具を少なくとも部分的に受け入れ可能であればよい。 The first opening 132 is configured to have a size capable of receiving the protective device 150 held by the holding portion (the columnar portion 121c) together with the perforation blade 121. More specifically, in the present embodiment, the diameter of the first opening 132 is larger than the outer diameter of the columnar portion 121c and the flange portion 121d of the drilling blade 121, and is larger than the maximum outer diameter of the protector 150. large. However, the present invention is not limited to this embodiment, and the first opening only needs to be able to at least partially receive the piercing blade and the protector.

また、受け部１３０は、受け部本体１３１に対して軸方向に摺動可能であるように、受け部本体１３１内部に配置された摺動体１３５を備える。該摺動体１３５は、中空の筒状体であり、その内径が一様となるように軸方向に延伸している。この摺動体１３５は、受け部本体１３１内部に入れ子式に収容されている。また、摺動体１３５の中心軸が受け部本体１３１（基部１２２）の中心軸と同軸上に配置されている。そして、摺動体１３５の軸方向の移動が蓋体１３３と第１開口１３２周縁をなす壁部との間に制限されている。また、摺動体１３５の軸方向両端が開放されており、摺動体１３５の下端には、穿孔刃１２１と対向する第２開口１３６が形成されている。第２開口１３６は、第１開口１３２の内側で開口している。本実施形態では、第２開口１３６の内径は、穿孔刃１２１の外径とほぼ同一かそれよりも僅かに大きくなるように定められている。また、後述するように、摺動体１３５が保護具１５０とともに前進可能であるように、第２開口１３６の内径は、保護具１５０（圧入部１５２）の外径よりも小さい。   Further, the receiving portion 130 includes a sliding body 135 disposed inside the receiving portion main body 131 so as to be slidable in the axial direction with respect to the receiving portion main body 131. The sliding body 135 is a hollow cylindrical body, and extends in the axial direction so that its inner diameter becomes uniform. The sliding body 135 is housed in a nesting manner inside the receiving portion main body 131. Further, the central axis of the sliding body 135 is arranged coaxially with the central axis of the receiving portion main body 131 (base 122). The axial movement of the slide 135 is restricted between the lid 133 and the wall defining the periphery of the first opening 132. Both ends in the axial direction of the sliding body 135 are open, and a second opening 136 facing the perforation blade 121 is formed at the lower end of the sliding body 135. The second opening 136 is open inside the first opening 132. In the present embodiment, the inner diameter of the second opening 136 is determined so as to be substantially the same as or slightly larger than the outer diameter of the drilling blade 121. Further, as described later, the inner diameter of the second opening 136 is smaller than the outer diameter of the protector 150 (the press-fit portion 152) so that the sliding body 135 can advance with the protector 150.

さらに、該受け部１３０では、摺動体１３５上面と受け部本体１３１の蓋体１３３の下面との間に付勢部材として付勢バネ１３７が配置されている。付勢バネ１３７は、摺動体１３５の拡径部分（段差）が第１開口１３２周縁壁部に当接するように、摺動体１３５を後方（穿孔刃１２１の後退方向）に付勢している。また、摺動体１３５の第２開口１３６の周縁面と、受け部本体１３１の第１開口１３２の周縁面とで略同一平面を構成している。つまり、摺動体１３５が下方に付勢された状態では、見かけ上、受け部本体１３１の下端面において第２開口１３６のみが下方に開口している。そして、摺動体１３５の端面に上方（穿孔刃１２１の前進方向）への力を加えることにより、付勢バネ１３７が収縮し、摺動体１３５が受け部本体１３１内部を軸方向に沿って摺動可能である。なお、付勢バネ１３７の硬さ（反発力）は、後述するとおり、保護具１５０に先行して穿孔刃１２１が貫通孔Ｈを形成するときに弾性変形せず、尚且つ、（より高い押圧力で）保護具１５０が貫通孔Ｈに圧入するときに弾性変形して収縮するように定められることが好ましい。   Further, in the receiving portion 130, an urging spring 137 is disposed as an urging member between the upper surface of the sliding body 135 and the lower surface of the lid 133 of the receiving portion main body 131. The urging spring 137 urges the sliding member 135 backward (in the retreating direction of the perforation blade 121) such that the enlarged diameter portion (step) of the sliding member 135 comes into contact with the peripheral wall of the first opening 132. The peripheral surface of the second opening 136 of the sliding body 135 and the peripheral surface of the first opening 132 of the receiving portion main body 131 form substantially the same plane. That is, when the sliding member 135 is urged downward, only the second opening 136 is apparently opened downward at the lower end surface of the receiving portion main body 131. Then, by applying a force upward (in the forward direction of the drilling blade 121) to the end surface of the sliding body 135, the biasing spring 137 contracts, and the sliding body 135 slides inside the receiving portion main body 131 along the axial direction. It is possible. The hardness (repulsive force) of the biasing spring 137 is not elastically deformed when the piercing blade 121 forms the through hole H prior to the protective device 150, as described later, and (the higher the pressing force). It is preferable that the protective device 150 is set to be elastically deformed and contract when the protective device 150 is pressed into the through hole H (by pressure).

可動ハンドル１４０は、図４に示すとおり、圧接体１２０の基部１２２を軸方向に沿って前進及び後退するように回動操作可能である。可動ハンドル１４０は、正面視略直状に延びる長尺体である。該可動ハンドル１４０は、回動軸１１７を介して回動式に穿孔具本体１１０に軸支されているとともに、リンク機構を介して圧接体１２０に可動式に接続されている。なお、可動ハンドル１４０は保持ハンドル１１８に対する離反方向又は近接方向のいずれの方向にも付勢されていない。可動ハンドル１４０は、穿孔工具本体１１０及び圧接体１２０に可動式に連結される（リンク機構の一部を構成する）係合部材１４１と、作業者が把持及び操作するための把持部材１４８とを備える。係合部材１４１の基端が把持部材１４８に一体的に結合されており、該係合部材１４１から把持部材１４８が直線的に延びている。   As shown in FIG. 4, the movable handle 140 is rotatable so that the base 122 of the press-contact body 120 moves forward and backward along the axial direction. The movable handle 140 is a long body that extends substantially straight when viewed from the front. The movable handle 140 is rotatably supported by the piercing tool main body 110 via a rotation shaft 117 and is movably connected to the press-contact body 120 via a link mechanism. Note that the movable handle 140 is not biased in any direction away from or close to the holding handle 118. The movable handle 140 includes an engaging member 141 movably connected to the drilling tool main body 110 and the pressure contact body 120 (which constitutes a part of a link mechanism), and a gripping member 148 for gripping and operating by an operator. Prepare. The base end of the engaging member 141 is integrally connected to the gripping member 148, and the gripping member 148 extends linearly from the engaging member 141.

該係合部材１４１は、穿孔工具本体１１０の正面及び背面を両側から挟み込む一対の可動板として構成されている。各可動板は、正面視く字状に屈折している。また、係合部材１４１は、案内溝１１３の一部に重合するように配置されている。しかし、係合部材１４１は、案内溝１１３の全部に重合するように配置されてもよい。   The engagement member 141 is configured as a pair of movable plates that sandwich the front and back surfaces of the drilling tool main body 110 from both sides. Each movable plate is bent in a U-shape when viewed from the front. Further, the engaging member 141 is disposed so as to overlap a part of the guide groove 113. However, the engagement member 141 may be disposed so as to overlap the entire guide groove 113.

また、該係合部材１４１の正面視略中央（「く」の字の略中心位置）には軸孔１４２が形成されている。穿孔工具本体１１０から突出する回動軸１１７が該軸孔１４２を貫通す
ることにより、係合部材１４１（可動ハンドル１４０）が穿孔工具本体１１０に回動可能に軸支されている。さらに、該係合部材１４１の正面視の基端側（図４の右端側）には、第１ガイド溝１４３及び第２ガイド溝１４４が貫通形成されている。第１ガイド溝１４３は、第１軸部１２５をスライド可能に内挿する長孔であり、案内溝１１３に交差するように延びている。同様に、第２ガイド溝１４４は、第２軸部１２６をスライド可能に内挿する長孔であり、上記第１ガイド溝１４３とほぼ同じ方向で案内溝１１３に交差するように延びている。第２ガイド溝１４４は、第１ガイド溝１４３の下方（後退側）で第１ガイド溝１４３に添って並設されている。そして、係合部材１４１の全回動域において、第１ガイド溝１４３及び第２ガイド溝１４４は、案内溝１１３に交差するように配置されている。これら第１ガイド溝１４３及び第２ガイド溝１４４は、細い連通路を介して互いに連通し、全体として略エ字形状を形成する。 A shaft hole 142 is formed substantially at the center of the engagement member 141 when viewed from the front (substantially at the center position of the letter ""). When the rotating shaft 117 protruding from the drilling tool main body 110 penetrates the shaft hole 142, the engaging member 141 (movable handle 140) is rotatably supported by the drilling tool main body 110. Further, a first guide groove 143 and a second guide groove 144 are formed to penetrate a base end side (right end side in FIG. 4) of the engagement member 141 in a front view. The first guide groove 143 is a long hole into which the first shaft portion 125 is slidably inserted, and extends so as to intersect the guide groove 113. Similarly, the second guide groove 144 is a long hole into which the second shaft portion 126 is slidably inserted, and extends to intersect the guide groove 113 in substantially the same direction as the first guide groove 143. The second guide groove 144 is arranged alongside the first guide groove 143 below (retreating side of) the first guide groove 143. The first guide groove 143 and the second guide groove 144 are arranged so as to intersect the guide groove 113 in the entire rotation range of the engagement member 141. The first guide groove 143 and the second guide groove 144 communicate with each other through a thin communication passage, and form a substantially E-shape as a whole.

第１ガイド溝１４３は、図４に示すとおり、軸孔１４２（回動軸１１７）に向けて延びており、その央部が両端よりも幅広に形成されている。第１ガイド溝１４３は、その上方（前進側）の端面に第１軸部１２５が摺接可能な第１摺接面１４３ａを有する。該第１摺接面１４３ａは、軸孔１４２に向けてほぼ直線状に延びており、可動ハンドル１４０（及び係合部材１４１）の回動とともに第１軸部１２５が係合部材１４１に対して相対移動する方向をガイドする。また、第１ガイド溝１４３は、第１摺接面１４３ａの軸孔１４２側のコ字状の端面に第１押圧部１４３ｂを有する。該第１押圧部１４３ｂは、可動ハンドル１４０（及び係合部材１４１）の回動に伴って第１軸部１２５が軸孔１４２側に移動したときに、第１軸部１２５に下方から係合可能である。   As shown in FIG. 4, the first guide groove 143 extends toward the shaft hole 142 (the rotation shaft 117), and has a central portion wider than both ends. The first guide groove 143 has a first sliding contact surface 143a with which the first shaft portion 125 can slide in an upper end (forward side). The first sliding contact surface 143 a extends substantially linearly toward the shaft hole 142, and the first shaft portion 125 moves with respect to the engagement member 141 with the rotation of the movable handle 140 (and the engagement member 141). Guides the direction of relative movement. In addition, the first guide groove 143 has a first pressing portion 143b on a U-shaped end surface of the first sliding contact surface 143a on the shaft hole 142 side. The first pressing portion 143b engages with the first shaft portion 125 from below when the first shaft portion 125 moves toward the shaft hole 142 with the rotation of the movable handle 140 (and the engaging member 141). It is possible.

第２ガイド溝１４４は、図４に示すとおり、軸孔１４２を通る直線から僅かにオフセットして延びている。また、第２ガイド溝１４４の方が第１ガイド溝１４３よりも長くなるように形成されている。第２ガイド溝１４４は、その下方（後退側）の端面に第２軸部１２６が摺接可能な第２摺接面１４４ａを有する。該第２摺接面１４４ａは、直線状に延びており、可動ハンドル１４０（及び係合部材１４１）の回動とともに第２軸部１２６が係合部材１４１に対して相対移動する方向をガイドする。そして、第２ガイド溝１４４は、軸孔１４２側の端部で軸孔１４２に向けて屈曲している。該第２ガイド溝１４４は、この屈曲した端部におけるコ字状の端面に第２押圧部１４４ｂを有する。該第２押圧部１４４ｂは、可動ハンドル１４０（及び係合部材１４１）の回動に伴って第２軸部１２６が軸孔１４２側に移動したときに、第２軸部１２６に下方から係合可能である。   The second guide groove 144 extends slightly offset from a straight line passing through the shaft hole 142 as shown in FIG. The second guide groove 144 is formed to be longer than the first guide groove 143. The second guide groove 144 has a second sliding contact surface 144a on its lower (retreating) end surface with which the second shaft portion 126 can slide. The second sliding contact surface 144a extends linearly, and guides the direction in which the second shaft portion 126 moves relative to the engaging member 141 with the rotation of the movable handle 140 (and the engaging member 141). . The second guide groove 144 is bent toward the shaft hole 142 at the end on the shaft hole 142 side. The second guide groove 144 has a second pressing portion 144b on a U-shaped end surface at the bent end. The second pressing portion 144b engages with the second shaft portion 126 from below when the second shaft portion 126 moves toward the shaft hole 142 with the rotation of the movable handle 140 (and the engagement member 141). It is possible.

図４に示すように、穿孔刃１２１が最大限後退した姿勢では、第１軸部１２５及び第２軸部１２６は、案内溝１１３の下端（後端）側に位置しているとともに、第１ガイド溝１４３及び第２ガイド溝１４４の軸孔１４２の遠位端（反対側の端部）に位置している。つまり、第１軸部１２５及び第２軸部１２６が案内溝１１３内で後退し、回動軸１１７と第１軸部１２５及び第２軸部１２６とが最大限に離隔している。この姿勢から可動ハンドル１４０が保持ハンドル１１８に対して近接操作されると、係合部材１４１が回動軸１１７を中心に図４の反時計回りに回動する。結果として、第１軸部１２５及び第２軸部１２６が第１ガイド溝１４３及び第２ガイド溝１４４にガイドされて案内溝１１３内で前方（上方）に移動する。   As shown in FIG. 4, in the posture in which the drilling blade 121 is retracted to the maximum, the first shaft portion 125 and the second shaft portion 126 are located on the lower end (rear end) side of the guide groove 113 and are in the first position. The guide groove 143 and the second guide groove 144 are located at the distal ends (opposite ends) of the shaft holes 142. That is, the first shaft portion 125 and the second shaft portion 126 are retracted in the guide groove 113, and the rotating shaft 117 is separated from the first shaft portion 125 and the second shaft portion 126 to the maximum. When the movable handle 140 is moved closer to the holding handle 118 from this position, the engaging member 141 rotates counterclockwise in FIG. As a result, the first shaft portion 125 and the second shaft portion 126 are guided by the first guide groove 143 and the second guide groove 144 and move forward (upward) in the guide groove 113.

図６乃至図９は、穿孔刃１２１（圧接体１２０）を最大限前進させた姿勢の穿孔工具１００を示している。可動ハンドル１４０が保持ハンドル１１８に対して近接するように操作されることにより、該穿孔工具１００は図１の姿勢から図６の姿勢へと変形する。   6 to 9 show the drilling tool 100 in a posture in which the drilling blade 121 (the pressure contact body 120) is advanced to the maximum. When the movable handle 140 is operated so as to approach the holding handle 118, the drilling tool 100 is deformed from the posture of FIG. 1 to the posture of FIG.

図８に示すように、可動ハンドル１４０が回動軸１１７を中心に保持ハンドル１１８に対して近接する方向に回動し、穿孔刃１２１及び基部１２２が前進し、穿孔刃１２１の一部が受け部１３０内部に第１開口１３２を介して収容されている。このとき、筒体１２９
の前端面１２９ｂが受け部１３０に当接し、穿孔刃１２１の鍔部１２１ｄが周壁１２９ａ前端に移動することで、穿孔刃１２１が筒体１２９から受け部１３０内に突出している。そして、摺動体１３５の第２開口１３６に穿孔刃１２１の剪断部（先端部１２１ａ、溝部１２１ｂ）及び柱状部１２１ｃが進入し、鍔部１２１ｄが受け部１３０の摺動体１３５に当接している。 As shown in FIG. 8, the movable handle 140 rotates around the rotation shaft 117 in a direction approaching the holding handle 118, the drilling blade 121 and the base 122 advance, and a part of the drilling blade 121 is received. It is housed inside the portion 130 via the first opening 132. At this time, the cylinder 129
The front end surface 129b of the hole abuts on the receiving portion 130, and the flange portion 121d of the perforating blade 121 moves to the front end of the peripheral wall 129a, so that the perforating blade 121 projects from the cylindrical body 129 into the receiving portion 130. Then, the shearing portion (tip portion 121a, groove portion 121b) and columnar portion 121c of the drilling blade 121 enter the second opening 136 of the sliding member 135, and the flange portion 121d contacts the sliding member 135 of the receiving portion 130.

また、このような穿孔刃１２１が最大限前進した姿勢では、係止凹部１２７と収容凹部１１４とが前後方向にずれており、係止体１１６が収容凹部１１４に完全に収容されている。すなわち、係止体１１６が基部１２２外面に作用されることで、バネ部材１１５が弾性収縮し、係止体１１６が中空部１１２側に突出（又は出現）しないように収容凹部１１４に押し込められている。このとき、係止体１１６が基部１１２外面に対して弾性力により付勢されている。しかし、前述したとおり、球状の係止体１１６と基部１２２外面との間の摩擦力が非常に小さいので、穿孔刃１２１の前進及び後退移動が係止体１１６によって妨げられることはない。   Further, in such a posture that the perforation blade 121 moves forward to the maximum, the locking concave portion 127 and the housing concave portion 114 are shifted in the front-rear direction, and the locking body 116 is completely stored in the housing concave portion 114. That is, when the locking member 116 is applied to the outer surface of the base 122, the spring member 115 is elastically contracted, and the locking member 116 is pushed into the housing recess 114 so as not to protrude (or appear) toward the hollow portion 112. I have. At this time, the locking body 116 is urged by the elastic force against the outer surface of the base 112. However, as described above, since the frictional force between the spherical locking body 116 and the outer surface of the base 122 is extremely small, the forward and backward movement of the drilling blade 121 is not hindered by the locking body 116.

図９に示すように、穿孔刃１２１（圧接体１２０）が最大限前進した姿勢では、第１軸部１２５及び第２軸部１２６が案内溝１１３内で前進して該案内溝１１３の上端（前端）側に位置している。第１軸部１２５は、第１ガイド溝１４３の長手方向の中央近傍で幅方向の連通路側に位置している。つまり、第１軸部１２５は、第１摺接面１４３ａから離隔して位置している。他方、第２軸部１２６は、第２ガイド溝１４４の軸孔１４２側の端部に位置している。この姿勢から可動ハンドル１４０が保持ハンドル１１８に対して離隔操作されると、係合部材１４１が図８の時計回りに回動する。その結果、第１軸部１２５及び第２軸部１２６が第１ガイド溝１４３及び第２ガイド溝１４４にガイドされて案内溝１１３内で下方に移動する。係止体１１６が係止凹部１２７に嵌入するまで、可動ハンドル１４０の回動操作を継続することにより、穿孔工具１００は図１乃至図４の姿勢に復帰する。   As shown in FIG. 9, in a posture in which the piercing blade 121 (the pressure contact body 120) has advanced to the maximum, the first shaft portion 125 and the second shaft portion 126 advance in the guide groove 113 and the upper end of the guide groove 113 ( Front end). The first shaft portion 125 is located near the longitudinal center of the first guide groove 143 on the side of the communication passage in the width direction. That is, the first shaft portion 125 is located apart from the first sliding contact surface 143a. On the other hand, the second shaft portion 126 is located at an end of the second guide groove 144 on the shaft hole 142 side. When the movable handle 140 is separated from the holding handle 118 from this position, the engaging member 141 rotates clockwise in FIG. As a result, the first shaft portion 125 and the second shaft portion 126 are guided by the first guide groove 143 and the second guide groove 144 and move downward in the guide groove 113. By continuing the turning operation of the movable handle 140 until the locking body 116 is fitted into the locking recess 127, the drilling tool 100 returns to the posture of FIGS.

上記のとおり、図１乃至図９を参照して、本実施形態の穿孔工具１００を説明した。該穿孔工具１００は、保持部によって保護具１５０を保持可能に構成されているが、保護具１５０を装填せずに、板材に貫通孔を形成する用途のみに使用されてもよいことは言うまでもない。   As described above, the drilling tool 100 according to the present embodiment has been described with reference to FIGS. 1 to 9. The piercing tool 100 is configured to be able to hold the protector 150 by the holding portion, but it is needless to say that the piercing tool 100 may be used only for forming a through hole in a plate material without mounting the protector 150. .

次いで、図１０を参照して、穿孔工具１００に装填される環状の保護具１５０について説明する。図１０（ａ）〜（ｄ）は、該保護具１５０の斜視図、正面図、平面図、Ｅ−Ｅ断面図である。図１０に示すように、保護具１５０は、円筒状の保護部１５１、該保護部１５１の先端に形成された圧入部１５２、該保護部１５１基端に形成されたフランジ部１５３を備える。保護部１５１は、貫通孔Ｈ端面を内側から覆い、配線・配管材と貫通孔Ｈ端面とを隔てるように機能する。また、圧入部１５２は、保護部１５１から先細りした形状を有し、先端に向けて縮径したテーパー面を形成する。圧入部１５２の基端が保護部１５１よりも僅かに拡径し、圧入部１５２と保護部１５１との間には、段差状の係止部１５４が形成されている。そして、フランジ部１５３は、保護部１５１基端から張り出し、基端側に向けて拡径した傾斜面を有している。本実施形態では、保護具１５０（保護部１５１）の内径は、穿孔刃１２１の柱状部１２１ｃの外径とほぼ等しい。これにより、保護具１５０が柱状部１２１ｃに外挿されたとき、相互間の摩擦力によって容易に抜け落ちることがない。また、本実施形態では、保護具１５０の最大外径（フランジ部１５３の径）が受け部本体１３１の第１開口１３２の内径よりも小さく、且つ、保護具１５０の最小外径（圧入部１５２先端の径）が摺動体１３５の第２開口１３６の内径よりも大きい。   Next, with reference to FIG. 10, the annular protector 150 loaded on the drilling tool 100 will be described. FIGS. 10A to 10D are a perspective view, a front view, a plan view, and an EE cross-sectional view of the protective device 150. As shown in FIG. 10, the protector 150 includes a cylindrical protection part 151, a press-fit part 152 formed at the tip of the protection part 151, and a flange part 153 formed at the base end of the protection part 151. The protection part 151 functions so as to cover the end face of the through hole H from the inside and to separate the wiring / piping material from the end face of the through hole H. Further, the press-fitting portion 152 has a tapered shape from the protection portion 151 and forms a tapered surface whose diameter is reduced toward the tip. The base end of the press-fit portion 152 is slightly larger in diameter than the protection portion 151, and a step-shaped locking portion 154 is formed between the press-fit portion 152 and the protection portion 151. The flange portion 153 has an inclined surface that protrudes from the base end of the protection portion 151 and has an increased diameter toward the base end. In the present embodiment, the inner diameter of the protective device 150 (protective portion 151) is substantially equal to the outer diameter of the columnar portion 121c of the drilling blade 121. Thus, when the protector 150 is extrapolated to the columnar portion 121c, the protector 150 does not easily fall off due to the frictional force between them. Further, in the present embodiment, the maximum outer diameter of the protector 150 (the diameter of the flange portion 153) is smaller than the inner diameter of the first opening 132 of the receiving portion main body 131, and the minimum outer diameter of the protector 150 (the press-fit portion 152). (Diameter at the tip) is larger than the inner diameter of the second opening 136 of the slide 135.

本実施形態の保護具１５０は、例えば、ポリ塩化ビニル、ナイロン、ＡＢＳ樹脂（アクリロニトリル・ブタジエン・スチレンプラスチック）、ポリエチレン、ポリカーボネート
等の硬質な合成樹脂から形成されている。しかしながら、本発明の保護具は上記材質に限定されず、金属等の他の材料で構成されてもよい。また、本実施形態の保護具１５０は、切れ目のない環状体として構成されているが、本発明の「環状の保護具」は、周方向の一部にスリットが形成され、一部が開いているＣ字形状やコ字状の環をも含む概念である。 The protector 150 of the present embodiment is made of, for example, a rigid synthetic resin such as polyvinyl chloride, nylon, ABS resin (acrylonitrile / butadiene / styrene plastic), polyethylene, and polycarbonate. However, the protective device of the present invention is not limited to the above materials, and may be made of other materials such as metal. Further, the protector 150 of the present embodiment is configured as a continuous annular body, but the “annular protector” of the present invention has a slit formed in a part in the circumferential direction, and a part is opened. It is a concept including a C-shaped or U-shaped ring.

図１１は、穿孔工具１００の保持部に環状の保護具１５０を外装した貫通孔加工装置１０の斜視図である。すなわち、貫通孔加工装置１０は板材Ｔに貫通孔Ｈを穿設するための穿孔工具１００、及び、貫通孔Ｈに圧入される環状の保護具１５０を備える。図１１に示すとおり、保護具１５０は、穿孔工具１００の穿孔刃１２１の保持部（柱状部１２１ｃ，鍔部１２１ｄ）に脱着自在に外挿されて装填されている。該保護具１５０を穿孔工具１００に装填して貫通孔加工装置１０を構成するには、図３に示したように、可動ハンドル１４０を保持ハンドル１１８から離反させた静止位置（装填位置）に仮止めする。当該静止位置において、穿孔刃１２１と受け部１０３との間に保護具１５０を側方から配置して、穿孔刃１２１の先端部１２１ａから保護具１５０を外装させる。このとき、穿孔刃１２１と受け部１０３との間隔が大きく確保された装填位置で可動ハンドル１４０が静止されるので、作業者は片手で保持ハンドル１１８を保持しつつ、保護具１５０を穿孔刃１２１の先端部１２１ａに外挿する。さらに、ガイド片１２９ｆによって穿孔刃１２１を軸とする筒体１２９の回動が形成されており、切り欠き部１２９の向きが一定に保たれて、保護具１５０の外挿の際に保護具１５０を把持する手指の向きを外装し易い方向に向けることができる。したがって、保護具１５０を穿孔工具１００に簡単に装填することができる。   FIG. 11 is a perspective view of the through-hole machining apparatus 10 in which an annular protective device 150 is externally provided on a holding portion of the drilling tool 100. That is, the through-hole processing apparatus 10 includes a drilling tool 100 for drilling the through-hole H in the plate material T, and an annular protective device 150 that is press-fitted into the through-hole H. As shown in FIG. 11, the protector 150 is removably inserted and mounted on the holding portion (the columnar portion 121 c and the flange portion 121 d) of the drilling blade 121 of the drilling tool 100. In order to configure the through-hole machining apparatus 10 by loading the protector 150 into the drilling tool 100, as shown in FIG. 3, the movable handle 140 is temporarily moved to a stationary position (loading position) where the movable handle 140 is separated from the holding handle 118. Stop it. In the stationary position, the protector 150 is disposed between the perforation blade 121 and the receiving portion 103 from the side, and the protector 150 is exteriorized from the distal end portion 121a of the perforation blade 121. At this time, since the movable handle 140 is stopped at the loading position where the distance between the perforation blade 121 and the receiving portion 103 is ensured, the operator holds the holding handle 118 with one hand and removes the protection tool 150 from the perforation blade 121. Is extrapolated to the front end portion 121a. Further, the rotation of the cylindrical body 129 about the drilling blade 121 is formed by the guide piece 129f, and the direction of the notch 129 is kept constant. Can be oriented in a direction that facilitates exterior packaging. Therefore, the protector 150 can be easily loaded on the drilling tool 100.

続いて、図１２乃至図１７を参照し、本実施形態の貫通孔加工装置１０を用いて、下地材Ｔを加工し、加工済下地材（又は加工済板材）Ｔ’を製造する方法を説明する。図１２（ａ）〜（ｄ）は、貫通孔Ｈに保護具１５０を圧入するまでの一連の工程の流れを示す模式図である。図１３乃至図１５は、図１２（ｂ）〜（ｄ）の各工程をより詳細に示した概略断面図である。図１６及び図１７は、保護具１５０を取着した貫通孔Ｈから穿孔刃１２１を離脱させる各工程を示す図である。なお、本実施形態では、下地材Ｔは断面視コ字形状の長手状の鋼材である。   Next, with reference to FIGS. 12 to 17, a description will be given of a method of manufacturing the processed base material (or processed plate material) T ′ by processing the base material T using the through-hole processing apparatus 10 of the present embodiment. I do. FIGS. 12A to 12D are schematic diagrams illustrating a flow of a series of steps until the protective device 150 is press-fitted into the through hole H. 13 to 15 are schematic cross-sectional views showing the steps of FIGS. 12B to 12D in more detail. FIG. 16 and FIG. 17 are views showing each step of detaching the drilling blade 121 from the through hole H to which the protective device 150 is attached. In the present embodiment, the base material T is a long steel material having a U-shaped cross section.

まず、穿孔工具１００の保持部である穿孔刃１２１の柱状部１２１ｃ及び鍔部１２１ｄに保護具１５０を外装保持（つまり、外挿及び装着）し、保護具１５０を穿孔工具１００に保持させることにより、貫通孔加工装置１０を準備する。そして、図１２（ａ）に示すように、穿孔工具１００を移動させ、穿孔刃１２１及び保護具１５０を下地材Ｔの表面側に配置するとともに受け部１３０を下地材Ｔの裏面側に配置する。さらに、貫通孔Ｈを形成する位置に位置合わせし、下地材Ｔ裏面を受け部本体１３１（第１開口１３２周縁）に当接させる。なお、穿孔工具１００は、可動ハンドル１４０を静止位置に仮止めした状態にあることが好ましい。そして、可動ハンドル１４０を仮止めすることにより、作業者は保持ハンドル１１８のみを把持して位置合わせの簡単に作業を行うことができる。   First, the protection tool 150 is externally held (that is, extrapolated and mounted) on the columnar portion 121c and the flange 121d of the drilling blade 121, which is a holding portion of the drilling tool 100, and the protection tool 150 is held by the drilling tool 100. , A through hole processing apparatus 10 is prepared. Then, as shown in FIG. 12A, the drilling tool 100 is moved, the drilling blade 121 and the protector 150 are arranged on the front side of the base material T, and the receiving part 130 is arranged on the back side of the base material T. . Further, it is positioned at the position where the through hole H is formed, and the back surface of the base material T is brought into contact with the receiving body 131 (the periphery of the first opening 132). In addition, it is preferable that the drilling tool 100 is in a state where the movable handle 140 is temporarily fixed to the stationary position. Then, by temporarily fixing the movable handle 140, the operator can hold the holding handle 118 alone and can easily perform the alignment.

次いで、圧接体１２０（穿孔刃１２１）を駆動路の第１地点（穿孔刃１２１先端が下地材Ｔ表面に当接する位置）まで前進させるべく、可動ハンドル１４０を保持ハンドル１１８に近接させるように回動させる。なお、第１地点は、駆動路における圧接体１２０が到達した地点又は位置を示し、圧接体１２０及び駆動路の相対的な位置関係を示す概念である。すなわち、本実施形態では、図１２（ａ）の後退姿勢から第１の距離（穿孔刃１２１先端と受け部１０３端面との間隔から実質的に下地材Ｔの厚みを差し引いた距離）を圧接体１２０が前進したときの駆動路における圧接体１２０の位置が第１地点して定義される。   Next, the movable handle 140 is turned so as to be close to the holding handle 118 so as to advance the pressure contact body 120 (piercing blade 121) to a first point of the drive path (a position where the tip of the punching blade 121 contacts the surface of the base material T). Move. The first point is a concept indicating a point or a position of the drive path at which the pressure contact body 120 has reached, and is a concept indicating a relative positional relationship between the pressure contact body 120 and the drive path. That is, in the present embodiment, the first distance (the distance obtained by substantially subtracting the thickness of the base material T from the distance between the tip of the piercing blade 121 and the end face of the receiving portion 103) from the retracted posture in FIG. The position of the pressure contact body 120 on the drive path when the vehicle 120 moves forward is defined as a first point.

回動を開始する際、図１２（ａ）の状態の穿孔工具１００に対して、可動ハンドル１４０に若干の力を加えると、図１３に示すように、圧接体１２０の基部１１２が中空部１１
２（駆動路）内を上方に移動開始し、係止凹部１２７から係止体１１６が離脱して可動ハンドル１４０の仮止めが解除される。本実施形態では、可動ハンドル１４０には既に鉛直下方に重力が作用しているので、僅かな力を可動ハンドル１４０に付加するだけで、可動ハンドル１４０の仮止めを解除可能である。そして、該可動ハンドル１４０の回動に伴って、係止体１１６が基部１１２外面上を相対的に摺動するように圧接体１２０が上方に引き上げられる。このとき、穿孔刃１２１が筒体１２９に対して相対的に前進した後、鍔部１２１ｄが筒体１２９に係合し、穿孔刃１２１のさらなる前進に伴って筒体１２９の前端面１２９ｂが下地材Ｔに近接する。 At the start of rotation, when a slight force is applied to the movable handle 140 with respect to the drilling tool 100 in the state of FIG. 12A, as shown in FIG.
2 (drive path), the locking body 116 is separated from the locking recess 127 and the movable handle 140 is temporarily released. In the present embodiment, since gravity is already acting on the movable handle 140 vertically downward, the temporary fixing of the movable handle 140 can be released only by applying a small force to the movable handle 140. Then, with the rotation of the movable handle 140, the press contact body 120 is pulled up so that the locking body 116 relatively slides on the outer surface of the base 112. At this time, after the perforation blade 121 advances relatively to the cylindrical body 129, the flange portion 121d engages the cylindrical body 129, and the front end surface 129b of the cylindrical body 129 is grounded as the perforation blade 121 further advances. Close to the material T.

該穿孔工具１００の上記動作に伴って、係合部材１４１が反時計回りに回動し、第１軸部１２５及び第２軸部１２６が案内溝１１３内を下端近傍から中央よりも上方に移動する。同時に、第１軸部１２５及び第２軸部１２６が第１ガイド溝１４３及び第２ガイド溝１４４内を回動軸１１７の遠位端から近位端に向けてスライドする。すなわち、圧接体１２０の前進及び後退移動に伴って回動軸１１７と第１軸部１２５との間隔ｗ１及び回動軸１１７と第２軸部１２６との間隔ｗ２が変位する。   With the above operation of the drilling tool 100, the engaging member 141 rotates counterclockwise, and the first shaft portion 125 and the second shaft portion 126 move from the vicinity of the lower end of the guide groove 113 to a position higher than the center. I do. At the same time, the first shaft portion 125 and the second shaft portion 126 slide in the first guide groove 143 and the second guide groove 144 from the distal end to the proximal end of the rotation shaft 117. That is, as the pressing body 120 moves forward and backward, the distance w1 between the rotating shaft 117 and the first shaft 125 and the distance w2 between the rotating shaft 117 and the second shaft 126 are displaced.

この係合部材１４１の回動に伴って、第２ガイド溝１４４の第２摺接面１４４ａが案内溝１１３上で上方に変位する。そして、係合部材１４１の回動に伴って該第２摺接面１４４ａ及び第２軸部１２６が互いに摺接することにより、第２軸部１２６が第２ガイド溝１４４内を軸孔１４２側に移動するとともに前方に引き上げられる。このとき、回動軸１１７と第２軸部１２６との間隔ｗ２が比較的大きいので、可動ハンドル１４０の操作量（係合部材１４１の回動量）に対する圧接体１２０の移動量が比較的大きい。そして、圧接体１２０が駆動路の後端から第１地点に近接するにつれて間隔ｗ１，ｗ２が減少する。   With the rotation of the engagement member 141, the second sliding contact surface 144a of the second guide groove 144 is displaced upward on the guide groove 113. Then, the second sliding portion 144a and the second shaft portion 126 slidably contact each other with the rotation of the engaging member 141, so that the second shaft portion 126 moves inside the second guide groove 144 toward the shaft hole 142. As he moves, he is raised forward. At this time, since the distance w2 between the rotation shaft 117 and the second shaft portion 126 is relatively large, the amount of movement of the press contact body 120 relative to the amount of operation of the movable handle 140 (the amount of rotation of the engagement member 141) is relatively large. Then, as the pressure contact body 120 approaches the first point from the rear end of the drive path, the intervals w1 and w2 decrease.

図１２（ｂ）に示すように、穿孔刃１２１先端が下地材Ｔ表面に当接する第１地点まで前進したとき、第１軸部１２５が第１ガイド溝１４３の軸孔１４２側の端部に配置され、間隔ｗ１が略最小となって、第１軸部１２５及び第１押圧部１４３ｂが当接（係合）している。この最小の間隔ｗ１は、案内溝１１３と回動軸１１７との最短距離に相当する。換言すれば、回動軸１１７中心を通るとともに案内溝１１３に直交する直線上に第１軸部１２５が到達したときに、間隔ｗ１が最小となる。他方、第２軸部１２６が第２ガイド溝１４４の軸孔１４２側に配置されているが、第２押圧部１４４ｂ（端部）から離隔している。   As shown in FIG. 12B, when the tip of the piercing blade 121 advances to the first point where it comes into contact with the surface of the base material T, the first shaft portion 125 is positioned at the end of the first guide groove 143 on the shaft hole 142 side. The first shaft portion 125 and the first pressing portion 143b are in contact (engagement) with each other and the distance w1 is substantially minimum. The minimum distance w1 corresponds to the shortest distance between the guide groove 113 and the rotation shaft 117. In other words, when the first shaft portion 125 reaches a straight line passing through the center of the rotation shaft 117 and orthogonal to the guide groove 113, the distance w1 is minimized. On the other hand, the second shaft portion 126 is disposed on the shaft hole 142 side of the second guide groove 144, but is separated from the second pressing portion 144b (end).

図１２（ｂ）の穿孔工具１００の状態から可動ハンドル１４０に瞬間的に強い力を加えることにより、圧接体１２０を下地材Ｔ表面に圧接させ、穿孔刃１２１の剪断部で下地材Ｔを突き破って下地材Ｔに貫通孔Ｈを形成することができる。一般に、穿孔刃１２１で下地材Ｔを突き破る際に瞬間的に大きな力が必要とされる。該第１地点において、可動ハンドル１４０を操作すると、係合部材１４１が回動軸１１７を中心に反時計回りに回動する力が発生し、第１ガイド溝１４３の第１押圧部１４３ｂが第１軸部１２５を上方（前進方向）に押圧する。そして、当該第１地点では、回動軸１１７及び第１軸部１２５の間隔ｗ１が略最小となることから、可動ハンドル１４０を通じて付加された係合部材１４１の回動力が、第１軸部１２５を介して圧接体１２０の圧接力へと最も効率的に変換される。その結果、穿孔刃１２１の剪断部で下地材Ｔを効率的に突き破って貫通孔Ｈを形成することができる。なお、長尺の保持ハンドル１１８及び可動ハンドル１４０の下端を操作できるので、てこの原理を利用して、比較的弱い力でも可動ハンドル１４０を容易に回動操作することができる。   By applying a strong force to the movable handle 140 instantaneously from the state of the drilling tool 100 in FIG. 12B, the press contact body 120 is pressed against the surface of the base material T, and the base material T is pierced by the shearing portion of the drilling blade 121. Thus, the through holes H can be formed in the base material T. Generally, a large force is required momentarily when the base material T is pierced by the piercing blade 121. When the movable handle 140 is operated at the first point, a force for rotating the engagement member 141 counterclockwise about the rotation shaft 117 is generated, and the first pressing portion 143b of the first guide groove 143 is moved to the first position. The one shaft 125 is pressed upward (forward direction). At the first point, the distance w1 between the rotating shaft 117 and the first shaft portion 125 is substantially minimum, so that the rotating force of the engaging member 141 added through the movable handle 140 is reduced by the first shaft portion 125. Is most efficiently converted into the pressing force of the pressing body 120 through As a result, the through-hole H can be formed by efficiently piercing the base material T at the shearing portion of the drilling blade 121. In addition, since the lower end of the long holding handle 118 and the lower end of the movable handle 140 can be operated, the movable handle 140 can be easily rotated with a relatively weak force using the leverage principle.

続いて、穿孔刃１２１（圧接体１２０）を駆動路の第２地点（保護具１５０先端が下地材Ｔ表面（貫通孔Ｈ周縁）に当接する位置）まで前進させるべく、可動ハンドル１４０を保持ハンドル１１８に近接させるようにさらに回動させる。なお、第２地点は、駆動路に
おける圧接体１２０が到達した地点又は位置を示し、圧接体１２０及び駆動路の相対的な位置関係を示す概念である。すなわち、本実施形態では、図１２（ｂ）の第１地点から第２の距離（第１軸部１２５と第２軸部１２６との間の距離）を圧接体１２０が前進したときの駆動路における圧接体１２０の位置が第２地点して定義される。なお、第１地点から第２地点までの圧接体１２０の移動量と、第１軸部１２５と第２軸部１２６との間隔が、略同一に設定されている。 Subsequently, the movable handle 140 is held by the holding handle so as to advance the perforation blade 121 (the pressure contact body 120) to the second point of the drive path (the position where the tip of the protector 150 contacts the surface of the base material T (the periphery of the through hole H)). It is further rotated to approach 118. The second point is a concept indicating a point or a position on the drive path where the pressure contact body 120 has reached, and is a concept indicating a relative positional relationship between the pressure contact body 120 and the drive path. That is, in the present embodiment, the drive path when the press-contact body 120 moves forward by the second distance (the distance between the first shaft portion 125 and the second shaft portion 126) from the first point in FIG. Is defined as the second point. In addition, the movement amount of the press contact body 120 from the first point to the second point and the distance between the first shaft 125 and the second shaft 126 are set to be substantially the same.

圧接体１２０が第１地点から第２地点に移動する際、係合部材１４１のさらなる回動に伴って、第１軸部１２５及び第２軸部１２６が案内溝１１３を上方に移動する。このとき、第１軸部１２５は、第１ガイド溝１４３内で第１押圧部１４３ｂ及び第１摺接面１４３ａから離隔する方向に移動する。すなわち、第１軸部１２５は、間隔ｗ１が増加するように回動軸１１７から離隔する方向に移動する。他方、第２軸部１２６は、第２ガイド溝１４４内で第２押圧部１４４ｂ側に移動する。すなわち、第２軸部１２６は、間隔ｗ２が減少するように回動軸１１７に近接する方向に移動する。そして、圧接体１２０が第２地点に到達すると、第２軸部１２６が第２ガイド溝１４４の軸孔１４２側の端部に配置され、間隔ｗ２が略最小となって、第２軸部１２６及び第２押圧部１４４ｂが当接（係合）している。この間隔ｗ２は、案内溝１１３と回動軸１１７中心との最短距離に相当する。換言すれば、回動軸１１７中心を通るとともに案内溝１１３に直交する直線上に第２軸部１２６が到達したときに、間隔ｗ２が最小となる。   When the pressure contact body 120 moves from the first point to the second point, the first shaft portion 125 and the second shaft portion 126 move upward in the guide groove 113 with further rotation of the engagement member 141. At this time, the first shaft portion 125 moves in the first guide groove 143 in a direction away from the first pressing portion 143b and the first sliding contact surface 143a. That is, the first shaft portion 125 moves in a direction away from the rotation shaft 117 so that the distance w1 increases. On the other hand, the second shaft portion 126 moves toward the second pressing portion 144b in the second guide groove 144. That is, the second shaft portion 126 moves in a direction approaching the rotation shaft 117 so that the interval w2 decreases. When the pressed body 120 reaches the second point, the second shaft portion 126 is disposed at the end of the second guide groove 144 on the shaft hole 142 side, and the interval w2 is substantially minimized. And the second pressing portion 144b is in contact (engagement). This interval w2 corresponds to the shortest distance between the guide groove 113 and the center of the rotating shaft 117. In other words, when the second shaft portion 126 reaches a straight line passing through the center of the rotation shaft 117 and orthogonal to the guide groove 113, the distance w2 is minimized.

この段階では、図１４に示すとおり、穿孔刃１２１の剪断部１２１ａ，１２１ｂ及び柱状部１２１ｃの一部が（第１開口部１３２の内側に位置する）摺動体１３５の第２開口１３６内に前進することにより、穿孔刃１２１が下地材Ｔを貫通している。そして、保持部に保持された保護具１５０先端（圧入部１５２）が貫通孔Ｈの周縁に当接している。換言すると、この貫通孔Ｈを形成した後、下地材Ｔの貫通孔Ｈ周縁を摺動体１３５端面（第２開口１３６周縁）と保護具１５０先端（圧入部１５２）とで挟み込んでいる。また、穿孔刃１２１の外径、第２開口１３６内径がほぼ等しく、形成される貫通孔Ｈの径もこれらとほぼ等しい。すなわち、穿孔時において、受け部本体１３１の第１開口１３２と穿孔刃１２１外縁との間に摺動体１３５（第２開口１３６周縁）が配置されることにより、下地材Ｔ裏面が第１開口１３２周縁だけでなく第２開口１３６周縁によっても下支えされる。このように、第１開口１３２周縁よりも穿孔刃１２１外縁に近い部分で下地材Ｔ裏面が支持されるので、穿孔刃１２１が下地材Ｔをより確実に、尚且つ、きれいな形状で打ち抜くことが可能である。特には、付勢バネ１３７は、穿孔工程において、収縮方向に弾性変形しない硬さ（反発力）を有してることが好ましい。すなわち、穿孔刃１２１が下地材Ｔを先んじて穿孔するときに、付勢バネ１３７の反発力によって下地材Ｔ裏面が安定的に支持され、（保護具１５０に先行する）穿孔刃１２１の剪断部によって貫通孔Ｈ周縁で下地材Ｔが裏面側に折れ曲がることを防止し、よりきれいな形状の貫通孔Ｈを形成することができる。また、図１４に示すように、貫通孔Ｈの形成と同時に下地材Ｔの切除片Ｔ１が生成される。切除片Ｔ１は、穿孔刃１２１の刃形（先端部１２１ａ及び溝部１２１ｂ形状）によって折り曲げられながら下地材Ｔから分離される。このように切除片Ｔ１が折り曲がって、その大きさが貫通孔Ｈや第２開口１３６と比べて実質的に小さくなるため、受け部１３０の内部から簡単に切除片Ｔ１を除去することができる。   At this stage, as shown in FIG. 14, the shearing portions 121a, 121b and a part of the columnar portion 121c of the drilling blade 121 advance into the second opening 136 of the sliding body 135 (located inside the first opening 132). By doing so, the drilling blade 121 penetrates the base material T. The tip of the protection device 150 (press-fit portion 152) held by the holding portion is in contact with the peripheral edge of the through hole H. In other words, after the formation of the through-hole H, the periphery of the through-hole H of the base material T is sandwiched between the end surface of the slide 135 (the periphery of the second opening 136) and the tip of the protective device 150 (the press-fit portion 152). Further, the outer diameter of the perforation blade 121 and the inner diameter of the second opening 136 are substantially equal, and the diameter of the formed through hole H is also substantially equal to these. That is, at the time of perforation, the sliding body 135 (peripheral edge of the second opening 136) is arranged between the first opening 132 of the receiving portion main body 131 and the outer edge of the perforation blade 121, so that the back surface of the base material T is opened. It is supported not only by the peripheral edge but also by the peripheral edge of the second opening 136. As described above, since the back surface of the base material T is supported at a portion closer to the outer edge of the perforation blade 121 than the peripheral edge of the first opening 132, the perforation blade 121 can more reliably punch the base material T with a clean shape. It is possible. In particular, it is preferable that the biasing spring 137 has a hardness (repulsive force) that does not elastically deform in the contraction direction in the punching step. That is, when the piercing blade 121 pierces the base material T ahead of the other, the back surface of the base material T is stably supported by the repulsive force of the biasing spring 137, and the shearing portion of the piercing blade 121 (preceding the protective device 150). Accordingly, the base material T is prevented from being bent toward the back side at the periphery of the through hole H, and the through hole H having a more beautiful shape can be formed. Further, as shown in FIG. 14, a cut piece T1 of the base material T is generated simultaneously with the formation of the through hole H. The cut piece T1 is separated from the base material T while being bent by the blade shape (the shape of the distal end portion 121a and the groove portion 121b) of the perforation blade 121. As described above, the cut piece T1 is bent and its size is substantially smaller than that of the through hole H and the second opening 136, so that the cut piece T1 can be easily removed from the inside of the receiving portion 130. .

続いて、図１２（ｄ）に示すように、基部１２２をさらに前進操作し、貫通孔Ｈ周縁を押し拡げるように、保持部に外装保持された保護具１５０の圧入部１５２を貫通孔Ｈに圧入し、保護具１５０を貫通孔Ｈ周縁に取着する。すなわち、図１２（ｃ）及び図１４の穿孔工具１００の状態から、瞬間的に強い力を可動ハンドル１４０に付加することにより、圧接体１２０により保護具１５０を貫通孔Ｈ周縁に圧接させ、保護具１５０の貫通孔Ｈへの圧入を開始させることができる。一般に、圧接体１２０で保護具１５０を貫通孔Ｈに圧入する際に瞬間的に大きな力が必要とされる。該第２地点において、可動ハンドル１４０
を操作すると、係合部材１４１が回動軸１１７を中心に反時計回りに回動する力が発生し、第２ガイド溝１４４の第２押圧部１４４ｂが第２軸部１２６を上方（前進方向）に押圧する。そして、当該第２地点では、回動軸１１７及び第２軸部１２６の間隔ｗ２が略最小となることから、可動ハンドル１４０を通じて付加された係合部材１４１の回動力が、第２軸部１２６を介して圧接体１２０の圧接力へと最も効率的に変換される。その結果、圧接体１２０（保護具１５０）による圧接力によって貫通孔Ｈ周縁を塑性変形させて保護具１５０を貫通孔Ｈに効率的に圧入することができる。なお、長尺の保持ハンドル１１８及び可動ハンドル１４０の下端を操作できるので、てこの原理を利用して、比較的弱い力でも可動ハンドル１４０を容易に回動操作することができる。 Subsequently, as shown in FIG. 12D, the press-fitting portion 152 of the protective device 150 externally held by the holding portion is inserted into the through-hole H so that the base 122 is further advanced and the periphery of the through-hole H is pushed and expanded. Press-fit, and attach the protector 150 to the periphery of the through hole H. That is, by applying a strong force to the movable handle 140 instantaneously from the state of the drilling tool 100 in FIG. 12C and FIG. Pressing of the tool 150 into the through hole H can be started. Generally, when press-fitting body 120 presses protective device 150 into through-hole H, a large instantaneous force is required. At the second point, the movable handle 140
Is operated, a force is generated that causes the engagement member 141 to rotate counterclockwise about the rotation shaft 117, and the second pressing portion 144b of the second guide groove 144 raises the second shaft portion 126 upward (in the forward direction). ). At the second point, since the distance w2 between the rotating shaft 117 and the second shaft portion 126 is substantially minimum, the rotational power of the engaging member 141 added through the movable handle 140 is reduced by the second shaft portion 126. Is most efficiently converted into the pressing force of the pressing body 120 through As a result, the periphery of the through-hole H is plastically deformed by the pressing force of the pressing body 120 (protector 150), so that the protector 150 can be efficiently pressed into the through-hole H. In addition, since the lower end of the long holding handle 118 and the lower end of the movable handle 140 can be operated, the movable handle 140 can be easily rotated with a relatively weak force using the leverage principle.

そして、圧接体１２０に前進方向の力が加わると、鍔部１２１ｃが保護具１５０を下地材Ｔに対して押圧する。そして、保護具１５０の圧入部１５２が下地材Ｔの貫通孔Ｈ周縁を裏面側に折り曲げつつ、受け部本体１３１の第１開口１３２内に受け入れられる。ここで、保護具１５０の圧入部１５２の先端がテーパー状であることにより、貫通孔Ｈ周縁の端縁（エッジ）近傍に押圧力を集中させて効果的に下地材Ｔを押圧することが可能である。これにより、比較的弱い力でも保護具１５０（圧入部１５２）による貫通孔Ｈの拡径（貫通孔Ｈ周縁の折り曲げ）が容易となる。同時に、下地材Ｔを介して摺動体１３５が保護具１５０に押圧されることにより、付勢バネ１３７が収縮して摺動体１３５が（前進方向に）押し上げられる。つまり、穿孔刃１２１及び保護具１５０の前進に連動して摺動体１３５が軸方向に沿って摺動する。このように、保護具１５０及び摺動体１３５が下地材Ｔ（貫通孔Ｈ周縁）を挟持しつつ、基部１２２が前進することにより、下地材Ｔをより確実且つ安定的に貫通孔Ｈを押し拡げることができる。   Then, when a force in the forward direction is applied to the press contact body 120, the flange portion 121c presses the protective device 150 against the base material T. Then, the press-fitting portion 152 of the protection device 150 is received in the first opening 132 of the receiving portion main body 131 while bending the periphery of the through hole H of the base material T toward the back side. Here, since the tip of the press-fit portion 152 of the protector 150 is tapered, it is possible to effectively press the base material T by concentrating the pressing force in the vicinity of the peripheral edge of the through hole H. It is. This facilitates the diameter increase of the through hole H (bending of the periphery of the through hole H) by the protector 150 (the press-fit portion 152) even with a relatively weak force. At the same time, when the sliding body 135 is pressed against the protector 150 via the base material T, the urging spring 137 contracts and the sliding body 135 is pushed up (in the forward direction). That is, the sliding body 135 slides in the axial direction in conjunction with the advancement of the piercing blade 121 and the protector 150. In this manner, the base member 122 advances while the protector 150 and the sliding body 135 sandwich the base material T (peripheral edge of the through hole H), thereby more reliably and stably pushing the base material T through the through hole H. be able to.

最終的に、図１５に示すように、保護具１５０のフランジ部１５３端面が下地材Ｔ表面とほぼ面一となるように、保護具１５０基端（フランジ部１５３）が受け部本体１３１の第１開口１３２内に受け入れられるまで、圧接体１２０を前進させる。図１５では、保護具１５０周囲に位置する筒体１２９の前端面１２９ｂが加工済下地材Ｔ’表面に当接又は近接している。そして、保護具１５０のフランジ部１５３の傾斜面が下地材Ｔの貫通孔Ｈ周縁を裏面側に凹ませるように塑性変形させ、フランジ部１５３端面が下地材Ｔ表面と面一となるまで、保護具１５０が貫通孔Ｈに押し込まれる。該フランジ部１５３は、貫通孔Ｈ周縁の環状凹部に受け止められるので、裏面側に抜けることはない。特には、本実施形態では、加工済下地材Ｔ’の下面（表面）が天井パネルが設置される天井面に配置されるため、下地材Ｔ裏面に保護具１５０に起因する凹凸がない（又は少ない）ことが好ましい。その結果、保護具１５０を貫通孔Ｈに嵌め込み、加工済下地材Ｔ’（図１８参照）を製造することができる。   Finally, as shown in FIG. 15, the base end (flange portion 153) of the protector 150 is formed on the receiving body 131 so that the end surface of the flange 153 of the protector 150 is substantially flush with the surface of the base material T. The press body 120 is advanced until it is received in the opening 132. In FIG. 15, the front end surface 129b of the cylindrical body 129 located around the protective device 150 is in contact with or close to the surface of the processed base material T '. Then, the inclined surface of the flange portion 153 of the protective device 150 is plastically deformed such that the periphery of the through hole H of the base material T is recessed toward the back surface side, and protection is performed until the end surface of the flange portion 153 is flush with the surface of the base material T. The tool 150 is pushed into the through hole H. Since the flange portion 153 is received by the annular concave portion on the periphery of the through hole H, the flange portion 153 does not come off to the rear surface side. In particular, in the present embodiment, since the lower surface (front surface) of the processed base material T ′ is arranged on the ceiling surface on which the ceiling panel is installed, there is no unevenness due to the protective device 150 on the back surface of the base material T (or Less). As a result, the protector 150 is fitted into the through hole H, and the processed base material T '(see FIG. 18) can be manufactured.

以上説明したとおり、圧接体１２０の「一前進動作」によって、下地材Ｔへの貫通孔Ｈ形成から貫通孔Ｈへの保護具１５０の取着までの一連の工程を完遂することが可能である。この「一前進動作」とは、穿孔刃１２１が基部１２２とともに一方向に前進する動作を意味する。   As described above, a series of steps from the formation of the through hole H to the base material T to the attachment of the protective device 150 to the through hole H can be completed by the "one forward operation" of the press contact body 120. . This “one forward operation” means an operation in which the drilling blade 121 advances in one direction together with the base 122.

下地材Ｔの加工後に、図１２（ａ）〜（ｄ）の手順を逆に行うことによって穿孔工具１００を加工済下地材Ｔ’から取り外すことができる。すなわち、図１２（ｄ）の姿勢から可動ハンドル１４０を保持ハンドル１１８から離反する方向に回動させることで、係合部材１４１が時計回りに回動し、第１ガイド溝１４３及び第２ガイド溝１４４が案内溝１１３上を下方（後退方向）に変位する。そして、回動に伴って該第１摺接面１４３ａ及び第１軸部１２５が互い摺接することにより、第１軸部１２５が第１ガイド溝１４３内を移動するとともに後方に押し下げられる。係止体１１６が係止凹部１２７に嵌入するまで、可動ハンドル１４０の回動操作を継続することにより、穿孔工具１００は図１乃至図４の当初の姿勢に復帰する。これに伴い、穿孔刃１２１を保護具１５０を装着した貫通孔Ｈから
抜き出して、穿孔工具１００を加工済下地材Ｔ’から離脱させることができる。 After the processing of the base material T, the drilling tool 100 can be removed from the processed base material T ′ by reversing the procedure of FIGS. 12A to 12D. That is, by rotating the movable handle 140 in the direction away from the holding handle 118 from the posture of FIG. 12D, the engagement member 141 rotates clockwise, and the first guide groove 143 and the second guide groove 144 is displaced downward (retreating direction) on the guide groove 113. Then, as the first sliding contact surface 143a and the first shaft portion 125 slidably contact each other with the rotation, the first shaft portion 125 moves in the first guide groove 143 and is pushed down rearward. By continuing the turning operation of the movable handle 140 until the locking body 116 is fitted into the locking concave portion 127, the drilling tool 100 returns to the original posture of FIGS. Along with this, the drilling blade 121 can be pulled out from the through hole H on which the protective device 150 is mounted, and the drilling tool 100 can be detached from the processed base material T '.

しかしながら、保護具１５０を貫通孔Ｈに圧入する際、保護具１５０にその径方向内方の大きな力が付加されることから、その内径が僅かに縮径するように変形する。そのため、穿孔刃１２１に保護具１５０が嵌り込み、両者を分離させることが容易ではなくなる。本実施形態では、後退補助部としての筒体１２９が、穿孔刃１２１が保護具１５０（加工済下地材Ｔ’）から後退し、両者が分離することを補助する。以下、筒体１２９の作用について図１６及び図１７を参照して説明する。   However, when the protector 150 is press-fitted into the through hole H, a large radially inward force is applied to the protector 150, so that the inner diameter of the protector 150 is slightly reduced. Therefore, the protector 150 is fitted into the perforation blade 121, and it is not easy to separate them. In the present embodiment, the cylindrical body 129 as a retreat assisting part assists the perforation blade 121 to retreat from the protector 150 (processed base material T ') and separate them. Hereinafter, the operation of the cylinder 129 will be described with reference to FIGS. 16 and 17.

図１６に示すように、保護具１５０を貫通孔Ｈに取着した後、可動ハンドル１４０を保持ハンドル１１８に離反させる方向に回動操作し、穿孔刃１２１（圧接体１２０）を後退させる。すると、穿孔刃１２１が保護具１５０に嵌着されていることにより、両者が結合した状態で、穿孔工具１００に対して相対的に加工済下地材Ｔ’が穿孔刃１２１とともに後退する。つまり、加工済下地材Ｔ’が固定されている場合には、穿孔工具１００が加工済下地材Ｔ’に対して移動する。図１６では、穿孔刃１２１が筒体１２９とともに後退し、筒体１２９の後端面１２９ｃが穿孔工具本体１１０に係合している。同時に、筒体１２９の前端面１２９ｂが加工済下地材Ｔ’表面に当接又は近接している。この状態で、圧接体１２０をさらに後退させると、筒体１２９が穿孔工具本体１１０に係止されつつ、穿孔刃１２１が筒体１２９の前端面１２９ｂから後退するように移動する。つまり、筒体１２９が穿孔刃１２１の後退移動に伴って穿孔刃１２１の先端側に相対移動する。このとき、筒体１２９の前端面１２９ｂと加工済下地材Ｔ’（貫通孔Ｈ周縁）とが係合している。よって、穿孔刃１２１の後退に伴って加工済下地材Ｔ’のみが係止され、筒体１２９が加工済下地材Ｔ’を穿孔刃１２１先端側に押し出すように作用する。その結果、図１７に示すように、穿孔刃１２１が保護具１５０から完全に抜け出して加工済下地材Ｔ’から撤退する。この工程において、てこの原理によって可動ハンドル１４０の回動操作が圧接体１２０を後退させる力に効率的に変換されることから、穿孔刃１２１と加工済下地材Ｔ’との結合を比較的弱い力で簡単に解除することが可能である。言うまでもないが、後退補助部（筒体１２９）は、保護具１５０を貫通孔Ｈに取着しない場合（つまり、穿孔のみを行う場合）であって、貫通孔Ｈを形成する工程においても同様に穿孔刃１２１の貫通孔Ｈからの離脱を容易にするように作用する。   As shown in FIG. 16, after the protector 150 is attached to the through hole H, the movable handle 140 is rotated in a direction to separate the movable handle 140 from the holding handle 118, and the perforation blade 121 (the pressure contact body 120) is retracted. Then, since the perforation blade 121 is fitted to the protector 150, the processed base material T ′ retreats with the perforation tool 100 relative to the perforation tool 100 in a state where both are connected. That is, when the processed base material T 'is fixed, the drilling tool 100 moves with respect to the processed base material T'. In FIG. 16, the drilling blade 121 is retracted together with the cylindrical body 129, and the rear end surface 129c of the cylindrical body 129 is engaged with the drilling tool main body 110. At the same time, the front end surface 129b of the cylindrical body 129 is in contact with or close to the surface of the processed base material T '. When the press contact body 120 is further retracted in this state, the drilling blade 121 moves so as to retract from the front end face 129b of the cylindrical body 129 while the cylindrical body 129 is locked by the drilling tool main body 110. That is, the cylindrical body 129 relatively moves to the tip side of the perforation blade 121 as the perforation blade 121 retreats. At this time, the front end surface 129b of the cylindrical body 129 is engaged with the processed base material T '(the periphery of the through hole H). Therefore, as the drilling blade 121 is retracted, only the processed base material T 'is locked, and the cylindrical body 129 acts to push the processed base material T' toward the tip of the drilling blade 121. As a result, as shown in FIG. 17, the perforation blade 121 completely comes out of the protector 150 and withdraws from the processed base material T '. In this step, since the turning operation of the movable handle 140 is efficiently converted into a force for retracting the press contact body 120 by the leverage principle, the connection between the perforated blade 121 and the processed base material T ′ is relatively weak. It can be easily released by force. Needless to say, the retreat assisting portion (cylindrical body 129) is used when the protector 150 is not attached to the through-hole H (that is, when only the perforation is performed), and the same applies to the step of forming the through-hole H. It works so that the perforation blade 121 is easily separated from the through hole H.

図１８は、下地材Ｔに保護具１５０で保護された配線・配管材用挿通孔が形成された加工済下地材Ｔ’を示している。図１８に示すとおり、加工済下地材Ｔ’では、下地材Ｔの貫通孔Ｈの内側に円環状の保護部１５１が配置され、保護部１５１内面が貫通孔Ｈ内方に臨むように、貫通孔Ｈ周縁を被覆している。つまり、貫通孔Ｈは、穿孔刃１２１による穿孔後に保護具１５０の保護部１５１外径まで拡張されている。また、保護具１５０先端の圧入部１５２が、加工済下地材Ｔ’の裏面側に突き抜けている。さらに、保護具１５０基端のフランジ部１５３が加工済下地材Ｔ’の表面に埋め込まれており、保護具１５０のフランジ部１５３端面が加工済下地材Ｔ’表面とほぼ面一となっている。つまり、貫通孔Ｈ周縁の屈折片が保護具１５０の保護部１５１及びフランジ部１５３の外面形状に沿って屈曲している。このとき、貫通孔Ｈ周縁の裏面側に折り曲げられた端面と圧入部１５２基端の係止部１５４とが係合することにより、保護具１５０が加工済下地材Ｔ’の表面側に抜け落ちることが規制されている。また、フランジ部１５３の最大径が拡張した貫通孔Ｈの径よりも大きいので、保護具１５０が加工済下地材Ｔ’の裏面側に抜け落ちることが規制されている。すなわち、加工済下地材Ｔ’において、保護具１５０が貫通孔Ｈ周縁に脱落防止に取着され、配線・配管材用の挿通孔が形成されている。   FIG. 18 shows a processed base material T 'in which a wiring / piping material insertion hole protected by the protector 150 is formed in the base material T. As shown in FIG. 18, in the processed base material T ′, an annular protection portion 151 is disposed inside the through hole H of the base material T, and the protection member 151 penetrates so that the inner surface faces the inside of the through hole H. The periphery of the hole H is covered. That is, the through hole H is expanded to the outer diameter of the protection portion 151 of the protector 150 after the piercing by the piercing blade 121. In addition, the press-fit portion 152 at the tip of the protector 150 penetrates through the back side of the processed base material T '. Further, the flange 153 at the base end of the protector 150 is embedded in the surface of the processed base material T ′, and the end surface of the flange 153 of the protector 150 is substantially flush with the surface of the processed base material T ′. . That is, the refraction piece at the periphery of the through hole H is bent along the outer shape of the protection part 151 and the flange part 153 of the protection device 150. At this time, when the end face bent to the back side of the periphery of the through hole H engages with the locking part 154 at the base end of the press-fitting part 152, the protective device 150 falls out to the front side of the processed base material T '. Is regulated. Further, since the maximum diameter of the flange portion 153 is larger than the diameter of the expanded through hole H, it is regulated that the protector 150 falls off to the back side of the processed base material T '. That is, in the processed base material T ', the protector 150 is attached to the periphery of the through-hole H to prevent it from falling off, and an insertion hole for wiring and piping material is formed.

以下、本発明に係る一実施形態の貫通孔加工装置１０及び穿孔工具１００における作用効果について説明する。   Hereinafter, the operation and effect of the through-hole drilling device 10 and the drilling tool 100 according to the embodiment of the present invention will be described.

本実施形態の貫通孔加工装置１０及び穿孔工具１００によれば、穿孔刃１２１の後退移動に伴って筒体１２９（後退補助部）が穿孔刃１２１の先端側に相対移動するように設けられている。それ故、保護具１５０圧入後又は貫通孔Ｈ形成後に穿孔刃１２１と下地材Ｔとが結合したとしても、穿孔刃１２１の後退移動の際、筒体１２９の前端面１２９ｂが下地材Ｔ表面に係合し、穿孔刃１２１の保護具１５０又は貫通孔Ｈからの後退移動が容易となる。すなわち、筒体１２９の前端面１２９ｂが下地材Ｔ表面に係合し、且つ、後端面１２９ｃが穿孔工具本体１１０に係合した状態で穿孔刃１２１が後退移動すると、下地材Ｔのみが係止されつつ穿孔刃１２１が筒体１２９に対して相対的に後退し、筒体１２９が下地材Ｔを穿孔刃１２１の先端側に押し出すように作用する。よって、可動ハンドル１４０の操作によって、保護具１５０又は貫通孔Ｈに嵌った穿孔刃１２１を下地材Ｔから簡単に分離することができる。したがって、本発明の穿孔工具は、板材への貫通孔形成における作業効率を改善するものである。   According to the through-hole machining apparatus 10 and the drilling tool 100 of the present embodiment, the cylindrical body 129 (retreat assist portion) is provided so as to move relatively to the tip side of the drilling blade 121 with the retreating movement of the drilling blade 121. I have. Therefore, even if the perforation blade 121 and the base material T are combined after the press-fit of the protector 150 or the formation of the through hole H, the front end surface 129b of the cylindrical body 129 is moved to the surface of the base material T when the perforation blade 121 is moved backward. Engagement makes it easy for the drilling blade 121 to retreat from the protector 150 or the through hole H. That is, when the piercing blade 121 moves backward with the front end surface 129b of the cylindrical body 129 engaged with the surface of the base material T and the rear end surface 129c engaged with the tool body 110, only the base material T is locked. The perforation blade 121 retreats relatively to the cylindrical body 129 while being pushed, and the cylindrical body 129 acts so as to push the base material T to the tip end side of the perforation blade 121. Therefore, by operating the movable handle 140, the protection tool 150 or the perforated blade 121 fitted in the through hole H can be easily separated from the base material T. Therefore, the drilling tool of the present invention improves the working efficiency in forming a through hole in a plate material.

［変形例］
本発明は、上記実施形態に限定されず、種々の実施形態や変形例を取り得る。以下、本発明の変形例を説明する。なお、各実施形態において、三桁で示される構成要素において下二桁が共通する構成要素は、特定がない限り、同一又は類似の特徴を有し、その説明を一部省略する。 [Modification]
The present invention is not limited to the above embodiment, and can take various embodiments and modifications. Hereinafter, modified examples of the present invention will be described. In each embodiment, components having the same last two digits in the components indicated by three digits have the same or similar features unless otherwise specified, and a description thereof will be partially omitted.

（１）本発明の穿孔工具の後退補助部は、上記実施形態の筒体１２９の形態に限定されない。図１９は、第２実施形態の穿孔工具２００を示している。該穿孔工具２００では、後退補助部は、穿孔工具本体２１０の一部を構成するとともに後退した穿孔刃２２１の周囲で延在する壁部２１９である。壁部２１９の前端面には、下地材Ｔに係合するための当接面が形成されている。壁部２１０の当接面２１９ａは、穿孔工具本体２１０に固定されているので、穿孔刃２２１の進退移動に伴って穿孔刃２２１及び当接面２１９ａは相対移動する。つまり、穿孔刃２２１の後退移動に伴って後退補助部としての壁部２１９（当接面２１９ａ）が穿孔刃２２１の先端側に相対移動する。より具体的には、下地材Ｔを穿孔する際には、当接面２１９ａが前進した穿孔刃２２１の後方に位置する（図１９（ａ）参照）。貫通孔Ｈ形成後に穿孔刃２２１が後退すると、穿孔刃２２１に結合した下地材Ｔが穿孔刃２２１とともに後退移動し、下地材Ｔが当接面２１９ａに近接し（図１９（ｂ）参照）、当接面２１９ａが下地材Ｔ表面に係合する。この係合状態でさらに穿孔刃２２１が後退移動すると、下地材Ｔのみが当接面２１９ａに係止されることで、当接面２１９ａが下地材Ｔを穿孔刃２２１の先端側に押し出すように作用する。その結果、穿孔刃２２１が下地材Ｔから容易に離脱する（図１９（ｃ）参照）。なお、本実施形態の穿孔工具２００でも同様に保護具を貫通孔Ｈに圧入させることができる。 (1) The retraction assisting portion of the drilling tool of the present invention is not limited to the form of the cylindrical body 129 of the above embodiment. FIG. 19 shows a drilling tool 200 according to the second embodiment. In the drilling tool 200, the retreat assisting portion is a wall portion 219 that forms a part of the drilling tool main body 210 and extends around the retreated drilling blade 221. A contact surface for engaging with the base material T is formed on the front end surface of the wall portion 219. Since the contact surface 219a of the wall 210 is fixed to the drilling tool main body 210, the drilling blade 221 and the contact surface 219a relatively move as the drilling blade 221 moves forward and backward. That is, the wall portion 219 (the contact surface 219 a) as the retreat assisting portion relatively moves toward the distal end side of the perforation blade 221 with the retreat movement of the perforation blade 221. More specifically, when piercing the base material T, the contact surface 219a is located behind the advanced piercing blade 221 (see FIG. 19A). When the piercing blade 221 retreats after the through hole H is formed, the base material T coupled to the piercing blade 221 moves back together with the piercing blade 221 and the base material T approaches the contact surface 219a (see FIG. 19B), The contact surface 219a is engaged with the surface of the base material T. When the drilling blade 221 further moves backward in this engaged state, only the base material T is locked on the contact surface 219a, so that the contact surface 219a pushes the base material T toward the distal end side of the drilling blade 221. Works. As a result, the perforation blade 221 easily separates from the base material T (see FIG. 19C). In addition, in the drilling tool 200 of the present embodiment, the protective device can be similarly pressed into the through hole H.

（２）本発明の穿孔工具の後退補助部は、上記実施形態の筒体１２９の形態に限定されない。図２０は、第３実施形態の穿孔工具３００を示している。該穿孔工具３００では、後退補助部は、可動ハンドル３４０の係合部材３４１の上方から一体的に膨出した当接縁部３４９である。該当接縁部３４９は、可動ハンドル３４０の回動とともに上下（進退）方向に変位可能である。穿孔前の穿孔刃３２１が後退した状態（図２０（ａ）参照）では、穿孔刃３２１が当接縁部３４９よりも前方に突出している。ここから穿孔刃３２１を前進させるべく可動ハンドル３４０を回動させると、当接縁部３４９が回動軸３１７を中心に反時計回りに回動し、下地材Ｔ表面に近接する。図２０（ｂ）に示すように、可動ハンドル３４０の回動操作によって圧接体３２０が前進し、穿孔刃３２１で貫通孔Ｈを形成する。このとき、当接縁部３４９が下地材Ｔ表面にほぼ当接している。そして、穿孔刃３２１を後退させるべく可動ハンドル３４０を回動させると、図２０（ｃ）、（ｄ）に示すように、当接縁部３４９が回動軸３１７を中心に時計回りに回動する。このとき、穿孔刃３２１が下地材Ｔから離脱するまで、当接縁部３４９が下地材Ｔ表面に摺接しながら回動することから、下地材Ｔのみが当接縁部３４９に係止され、穿孔刃３２１が当接縁部３４９に
対して相対的に後退移動する。つまり、穿孔刃３２１の後退移動に伴って後退補助部としての当接縁部３４９が穿孔刃３２１の先端側に相対移動することで、当接縁部３４９が下地材Ｔを穿孔刃３２１の先端側に押し出すように作用する。その結果、穿孔刃３２１が下地材Ｔから容易に離脱する。なお、本実施形態の穿孔工具３００でも同様に保護具を貫通孔Ｈに圧入させることができる。 (2) The retraction assisting portion of the drilling tool of the present invention is not limited to the form of the cylindrical body 129 of the above embodiment. FIG. 20 shows a drilling tool 300 according to the third embodiment. In the drilling tool 300, the retreat assisting portion is the contact edge portion 349 bulging integrally from above the engaging member 341 of the movable handle 340. The contact edge portion 349 can be displaced in the up and down (advance and retreat) directions with the rotation of the movable handle 340. In a state where the perforation blade 321 before perforation is retracted (see FIG. 20A), the perforation blade 321 protrudes forward from the contact edge 349. When the movable handle 340 is rotated to advance the perforation blade 321 from here, the contact edge 349 rotates counterclockwise around the rotation shaft 317 and approaches the surface of the base material T. As shown in FIG. 20 (b), the press contact body 320 moves forward by the rotation operation of the movable handle 340, and the through hole H is formed by the perforation blade 321. At this time, the contact edge portion 349 is almost in contact with the surface of the base material T. When the movable handle 340 is rotated to retreat the perforation blade 321, the contact edge 349 rotates clockwise about the rotation shaft 317 as shown in FIGS. I do. At this time, until the perforation blade 321 separates from the base material T, the contact edge portion 349 rotates while sliding on the surface of the base material T, so that only the base material T is locked by the contact edge portion 349, The perforation blade 321 retreats relatively to the contact edge 349. In other words, the contact edge 349 as the retreat assisting part moves relatively to the tip side of the drilling blade 321 with the retreating movement of the drilling blade 321, so that the contact edge 349 moves the base material T to the tip of the drilling blade 321. Acts to push to the side. As a result, the perforation blade 321 easily separates from the base material T. In addition, in the drilling tool 300 of the present embodiment, the protective device can be similarly pressed into the through hole H.

（３）本発明の穿孔工具の後退補助部は、上記実施形態の筒体１２９の形態に限定されない。図２１及び図２２は、第４実施形態の穿孔工具４００を示している。該穿孔工具４００では、後退補助部は、穿孔工具本体４１０の支持フレーム４１１のアーム部分に回動式に軸支された出没体４１９である。該出没体４１９は、下方の突出片が長いコ字形状を有し、穿孔刃４２１と干渉しないように該穿孔刃４２１の正面側及び／又は背面側に配置されている。出没体４１９は、受け部４３０の側方に位置する回転中心軸４１９ａと、該回転中心軸４１９ａから側方に延在する第１当接部４１９ｂと、その下方で該第１当接部４１９ｂと同方向に延在する第２当接部４１９ｃとを備えてなる。第２当接部４１９ｃは、その上面に傾斜面が形成されたテーパー形状を有する。第１当接部４１９ｂは、受け部４３０の開口端面上方で下地材Ｔの側壁上面に係合可能であり、他方、第２当接部４１９ｃは、受け部４３０及び下地材Ｔの下方に出没して下地材Ｔ表面に係合可能である。 (3) The retraction assisting portion of the drilling tool of the present invention is not limited to the form of the cylindrical body 129 of the above embodiment. FIGS. 21 and 22 show a drilling tool 400 according to the fourth embodiment. In the drilling tool 400, the retreat assisting portion is the retractable body 419 that is rotatably supported by the arm of the support frame 411 of the drilling tool main body 410. The retractable body 419 has a long U-shaped lower protruding piece, and is disposed on the front side and / or the rear side of the drilling blade 421 so as not to interfere with the drilling blade 421. The retractable body 419 includes a rotation center shaft 419a located on the side of the receiving portion 430, a first contact portion 419b extending laterally from the rotation center shaft 419a, and a first contact portion 419b below the rotation center shaft 419b. And a second contact portion 419c extending in the same direction. The second contact portion 419c has a tapered shape in which an inclined surface is formed on the upper surface. The first contact portion 419b is engageable with the upper surface of the side wall of the base material T above the opening end surface of the receiving portion 430, while the second contact portion 419c is projected below the receiving portion 430 and the base material T. Thus, it can be engaged with the surface of the base material T.

図２１（ａ）〜（ｄ）を参照して、本実施形態の穿孔工具４００を用いて下地材Ｔに貫通孔Ｈを形成する工程を説明する。図２１（ａ）に示すように、受け部４３０と第２当接部４１９ｃとの間に下地材Ｔを配置するように穿孔工具４００を下地材Ｔに近接させる。このとき、出没体４１９の第２当接部４１９ｃは下地材Ｔに対向する位置に出現していない。次に、図２１（ｂ）に示すように、下地材Ｔの側壁上面に第１当接部４１９ｂを当接させるように、穿孔工具４００を移動させる。下地材Ｔとの当接によって第１当接部４１９ｂが上方に回動することにより、出没体４１９が反時計回りに回転し、第２当接部４１９ｃが下地材Ｔに対向する位置に出現する。さらに、図２１（ｃ）に示すように、受け部４３０の開口端面に下地材Ｔ裏面を当接させるように穿孔工具４００を移動させると、出没体４１９がさらに回転し、第２当接部４１９ｃの当接面が下地材Ｔ表面に当接又はごく近接する。そして、図２１（ｄ）に示すように、圧接体４２０を前進させると穿孔刃４２１が下地材Ｔを貫通して貫通孔Ｈを形成する。 Referring to FIG. 2 1 (a) ~ (d ), illustrating a step of forming a through hole H to the base material T with the drilling tool 400 of the present embodiment. As shown in FIG. 2 1 (a), the receiving portion 430 and the drilling tool 400 to place the base material T is close to the base material T between the second contact portion 419c. At this time, the second contact portion 419c of the retractable body 419 does not appear at a position facing the base material T. Next, as shown in FIG. 2 1 (b), as to abut against the first abutment portion 419b on the side wall upper surface of the base material T, moves the drilling tool 400. When the first contact portion 419b rotates upward due to contact with the base material T, the retractable body 419 rotates counterclockwise, and the second contact portion 419c appears at a position facing the base material T. I do. Furthermore, as shown in FIG. 2 1 (c), moving the receiving unit 430 drilling tool 400 so as to abut against the base material T backside to the opening end face of the further rotates infested body 419, the second contact The contact surface of the portion 419c is in contact with or very close to the surface of the base material T. Then, as shown in FIG. 2 1 (d), the cutting head 421 to advance the pressure member 420 to form a through-hole H through the base material T.

図２２（ａ）、（ｂ）を参照して、本実施形態の穿孔工具４００を用いて穿孔刃４２１を下地材Ｔから離脱させて後退させる工程を説明する。下地材Ｔと出没体４１９とが係合しているとき、穿孔刃４２１の進退移動に拘わらず、出没体４１９は下地材Ｔ表面に当接又はごく近接した姿勢を維持する。すなわち、穿孔刃４２１は、出没体４１９に対して相対的に後退移動可能である。図２１（ｄ）の状態から圧接体４２０が後退すると、図２２（ａ）に示すように、出没体４１９の第２当接部４１９ｃが下地材Ｔ表面に係合され、下地材Ｔのみが係止されつつ、穿孔刃４２１が後退移動する。つまり、穿孔刃４２１の後退移動に伴って後退補助部としての出没体４１９が穿孔刃４２１の先端側に相対移動することで、出没体４１９が下地材Ｔを穿孔刃４２１の先端側に押し出すように作用する。その結果、図２２（ａ）に示すように、穿孔刃４２１が下地材Ｔから容易に離脱する。なお、本実施形態の穿孔工具４００でも同様に保護具を貫通孔Ｈに圧入させることができる。 Figure 2 2 (a), with reference to (b), the cutting head 421 with a drilling tool 400 of the present embodiment is detached from the base material T describing the step of retreat. When the base material T and the retractable body 419 are engaged with each other, the retractable body 419 is kept in contact with or very close to the surface of the base material T irrespective of the movement of the drilling blade 421. That is, the perforation blade 421 can retreat relatively to the retractable body 419. When pressure body 420 from the state in FIG. 2 1 (d) is retracted, as shown in FIG. 2 2 (a), the second contact portion 419c of the infested body 419 is engaged with the base material T surface, the base material T The perforation blade 421 moves backward while only the locking is performed. In other words, the retractable body 419 as the retreating assist portion relatively moves toward the distal end side of the drilling blade 421 with the retreating movement of the drilling blade 421, so that the retractable body 419 pushes the base material T toward the distal end side of the drilling blade 421. Act on. As a result, as shown in FIG. 2 2 (a), the cutting head 421 is easily detached from the base material T. In addition, in the drilling tool 400 of the present embodiment, the protective device can be similarly pressed into the through hole H.

（４）上記実施形態の穿孔工具１００から可動ハンドル１４０の仮保持手段が省略されてもよい。また、本発明の貫通孔加工装置及び穿孔工具は、上記実施形態のようなリンク機構を省略し、可動ハンドルと圧接体（穿孔刃）との連結を従来（例えば、特許文献１）式のものとしてもよい。 (4) The temporary holding means for the movable handle 140 may be omitted from the drilling tool 100 of the above embodiment. Further, the through-hole processing device and the drilling tool of the present invention omit the link mechanism as in the above embodiment, and connect the movable handle and the press-contact body (piercing blade) with a conventional (for example, Patent Document 1) type. It may be.

（５）上記実施形態では、後退補助部が穿孔刃が貫通孔から完全に離脱するまで板材に作用するが、本発明はこれに限定されない。すなわち、穿孔刃の後退時において、穿孔刃が
板材から離脱する行程の途中まで、後退補助部が板材を係止し、穿孔刃と板材との離脱を部分的に補助するように構成してもよい。 (5) In the above embodiment, the retreat assisting portion acts on the plate member until the perforation blade is completely separated from the through hole, but the present invention is not limited to this. That is, at the time of retreat of the piercing blade, the retreating assisting portion locks the plate material until the piercing blade separates from the plate material, and may partially assist the detachment of the piercing blade and the plate material. Good.

（６）上記実施形態の穿孔工具１００は、受け部１３０を備えるが、本発明はこれに限定されない。すなわち、本発明の穿孔工具から受け部が省略されてもよい。このような最小構成においても、同様に本発明の効果を発揮することができる。 (6) The drilling tool 100 of the above embodiment includes the receiving portion 130, but the present invention is not limited to this. That is, the receiving portion may be omitted from the drilling tool of the present invention. Even in such a minimum configuration, the effects of the present invention can be similarly exhibited.

（７）上記実施形態の穿孔工具は、上記実施形態の形状・寸法に限定されることはない。すなわち、穿孔刃の形状は、板材を打ち抜き可能であれば、他の形状であってもよい。例えば、穿孔刃の剪断部は、溝部を設けない正面視において直線的な刃先を有していてもよい。さらに、穿孔刃や駆動軸の断面形状は多角形、楕円形などであってもよい。これに対応し、保護具の形状も多角形、楕円形のＯリング、Ｃリング等であってもよい。また、上記実施形態では、保持部は、穿孔刃１２１の柱状部１２１ｃ、鍔部１２１ｄで構成されるが、保護具を保持可能であれば、当該構成に限定されない。例えば、保持部は、穿孔刃でなく、穿孔刃の基端側に別途形成されてもよい。一例として、穿孔刃と駆動軸との間に柱状部及び鍔部を有する保持体（保持部）を設けたり、駆動軸先端に保持部を一体的に形成してもよい。つまり、本発明の「穿孔刃に外装保持する」とは、保持部が穿孔刃と軸方向に離隔した位置で保護具を保持することをも含む概念である。さらに、上記実施形態では、第１開口１３２は、穿孔刃１２１の鍔部１２１ｄ及び保護具１５０のフランジ部１５３の径よりも大きく構成されているが、本発明は当該寸法に限定されない。すなわち、保護具の一部を板材に埋め込んで貫通孔端面を保護可能であれば十分であるため、第１開口の径が、穿孔刃の刃先及び保護部の圧入部の径よりも大きければ、穿孔刃の鍔部や保護具のフランジ部の径よりも小さくてもよい。つまり、加工済板材において、保護具の基端（フランジ部）が板材表面から突出していてもよい。 (7) The drilling tool of the above embodiment is not limited to the shape and dimensions of the above embodiment. That is, the shape of the drilling blade may be another shape as long as the plate material can be punched. For example, the shearing portion of the drilling blade may have a straight cutting edge in a front view without a groove. Further, the cross-sectional shape of the drilling blade or the drive shaft may be polygonal, elliptical, or the like. Correspondingly, the shape of the protector may be a polygonal or elliptical O-ring, C-ring or the like. Further, in the above-described embodiment, the holding portion is configured by the columnar portion 121c and the flange portion 121d of the perforation blade 121, but is not limited to this configuration as long as the protection device can be held. For example, the holding portion may be separately formed on the base end side of the drilling blade instead of the drilling blade. As an example, a holder (holding portion) having a columnar portion and a flange portion may be provided between the drilling blade and the drive shaft, or the holding portion may be integrally formed at the tip of the drive shaft. In other words, the term “exterior-holding on the drilling blade” in the present invention is a concept that also includes holding the protector at a position where the holding unit is axially separated from the drilling blade. Furthermore, in the above-described embodiment, the first opening 132 is configured to be larger than the diameter of the flange 121d of the drilling blade 121 and the diameter of the flange 153 of the protector 150, but the present invention is not limited to such dimensions. That is, since it is sufficient if the end of the through hole can be protected by embedding a part of the protection tool in the plate material, if the diameter of the first opening is larger than the diameter of the cutting edge of the drilling blade and the diameter of the press-fitting portion of the protection portion, The diameter may be smaller than the diameter of the flange of the perforation blade or the flange of the protective device. That is, in the processed plate material, the base end (flange portion) of the protector may protrude from the plate material surface.

（８）上記実施形態では、貫通孔加工装置１０は天井や壁裏の下地材Ｔに配線・配管材用の挿通孔を形成することに用いられる。しかしながら、本発明は、板材に保護具を取り付けた貫通孔を形成する用途であれば、下地材に配線・配管材用の挿通孔を形成する用途に限定されない。例えば、室内に露出する板材の貫通孔を保護具で保護し、人が貫通孔端面を触って怪我をすることを防止する用途に用いられてもよい。したがって、本発明の貫通孔加工装置及び穿孔工具は、種々の用途に適用可能である。 (8) In the above embodiment, the through-hole processing apparatus 10 is used to form insertion holes for wiring and piping materials in the base material T on the ceiling or behind the wall. However, the present invention is not limited to the use of forming an insertion hole for wiring and piping material in a base material, as long as the use is to form a through hole in which a protective device is attached to a plate material. For example, it may be used for a purpose of protecting a through hole of a plate material exposed in a room with a protective device, and preventing a person from touching an end surface of the through hole and being injured. Therefore, the through-hole processing device and the drilling tool of the present invention can be applied to various uses.

本発明は上述した実施形態や変形例に限定されるものではなく、本発明の技術的範囲に属する限りにおいて種々の態様で実施しうるものである。   The present invention is not limited to the above-described embodiments and modified examples, and can be implemented in various modes as long as they belong to the technical scope of the present invention.

１０ 貫通孔加工装置
１００ 穿孔工具
１１０ 穿孔工具本体
１１１ 支持フレーム
１１２ 中空部（駆動路）
１１３ 案内溝
１１４ 収容凹部（仮保持手段の一部）
１１５ バネ部材（仮保持手段の一部）
１１６ 係止体
１１７ 回動軸
１１９ 保持ハンドル
１２０ 圧接体
１２１ 穿孔刃
１２１ａ 先端部（剪断部）
１２１ｂ 溝部（剪断部）
１２１ｃ 柱状部（保持部）
１２１ｄ 鍔部（保持部）
１２１ｅ 連結部
１２２ 基部
１２５ 第１軸部（リンク機構の一部）
１２６ 第２軸部（リンク機構の一部）
１２７ 係止凹部（仮保持手段の一部）
１２９ 筒体（後退補助部）
１２９ａ 周壁
１２９ｂ 前端面
１２９ｃ 後端面
１２９ｄ 切り欠き
１２９ｅ 切断部
１２９ｆ ガイド片
１３０ 受け部
１３１ 受け部本体
１３２ 第１開口
１３３ 蓋体
１３５ 摺動体
１３６ 第２開口
１３７ 付勢バネ
１４０ 可動ハンドル(操作部材)
１４１ 係合部材（リンク機構の一部）
１４２ 軸孔
１４３ 第１ガイド溝
１４３ａ 第１摺接面
１４３ｂ 第１押圧部
１４４ 第２ガイド溝
１４４ａ 第２摺接面
１４４ｂ 第２押圧部
１４５ 連通路
１４８ 把持部材
１５０ 保護具
１５１ 保護部
１５２ 圧入部
１５３ フランジ部
１５４ 係止部
２１９ 壁部（後退補助部）
３４９ 当接縁部（後退補助部）
４１９ 出没体（後退補助部）
Ｔ 下地材（対象又は板材）
Ｔ’ 加工済下地材（加工済板材）
Ｈ 貫通孔
Ｔ１ 切除片 Reference Signs List 10 through-hole processing device 100 drilling tool 110 drilling tool main body 111 support frame 112 hollow portion (drive path)
113 Guide groove 114 Housing recess (part of temporary holding means)
115 spring member (part of temporary holding means)
116 Locking body 117 Rotating shaft 119 Holding handle 120 Press-contact body 121 Drilling blade 121a Tip (shear portion)
121b Groove (shear)
121c Column-shaped part (holding part)
121d collar (holding part)
121e Connecting part 122 Base 125 First shaft part (part of link mechanism)
126 2nd shaft part (part of link mechanism)
127 Locking recess (part of temporary holding means)
129 cylinder (retraction assist part)
129a Peripheral wall 129b Front end face 129c Rear end face 129d Notch 129e Cutting part 129f Guide piece 130 Receiving part 131 Receiving part main body 132 First opening 133 Cover 135 Sliding body 136 Second opening 137 Urging spring 140 Movable handle (operation member)
141 engagement member (part of link mechanism)
142 Shaft hole 143 First guide groove 143a First sliding contact surface 143b First pressing portion 144 Second guide groove 144a Second sliding contact surface 144b Second pressing portion 145 Communication passage 148 Gripping member 150 Protective device 151 Protective portion 152 Press-fit portion 153 Flange part 154 Lock part 219 Wall part (retraction assist part)
349 Contact edge (retraction assist part)
419 Emerging body (retreat assist part)
T Base material (object or board material)
T 'processed base material (processed plate material)
H Through hole T1 Cut piece

Claims (9)

板材に貫通孔を穿設するための穿孔工具であって、
穿孔工具本体と、
前記穿孔工具本体に前後方向に可動式に支持され、前進して前記板材を表面側から打ち抜き可能な穿孔刃と、
前記穿孔刃の後退移動に伴って前記穿孔刃の先端側に相対移動する後退補助部と、
を備え、
前記穿孔刃の基端近傍には、前記貫通孔に圧入される環状の保護具を外装保持する保持部がさらに設けられ、前記穿孔刃の前進により前記貫通孔を形成した後、さらなる前記穿孔刃の前進によって前記保護具が前記貫通孔に圧入されるように構成され、
前記穿孔刃で前記板材を打ち抜いた後の前記穿孔刃の後退移動の際、前記後退補助部が前記板材の表面に係合し、前記穿孔刃の前記貫通孔からの後退を補助することを特徴とする穿孔工具。 A drilling tool for drilling a through hole in a plate material,
Drilling tool body,
A piercing blade that is movably supported in the front-rear direction by the piercing tool main body and is capable of advancing and punching the plate material from the surface side,
With the retreating movement of the drilling blade, a retreating assisting part that relatively moves to the tip side of the drilling blade,
With
In the vicinity of the base end of the drilling blade, a holding portion for externally holding an annular protective device press-fit into the through-hole is further provided, and after forming the through-hole by advancing the drilling blade, further forming the drilling blade. Is configured so that the protective device is pressed into the through hole by the advance of
When the punching blade retreats after punching the plate material with the punching blade, the retreat assisting portion engages with the surface of the plate material and assists the retraction of the punching blade from the through hole. And drilling tools. 板材に貫通孔を穿設するための穿孔工具と、前記貫通孔に圧入される環状の保護具と、を備える貫通孔加工装置であって、A through-hole processing device comprising: a drilling tool for drilling a through-hole in a plate material; and an annular protector press-fit into the through-hole,
前記穿孔工具は、The drilling tool,
穿孔工具本体と、Drilling tool body,
前記穿孔工具本体に前後方向に可動式に支持され、前進して前記板材を表面側から打ち抜き可能な穿孔刃と、A piercing blade that is movably supported in the front-rear direction by the piercing tool main body and is capable of advancing and punching the plate material from the surface side,
前記穿孔刃の後退移動に伴って前記穿孔刃の先端側に相対移動する後退補助部と、With the retreating movement of the drilling blade, a retreating assisting part that relatively moves to the tip side of the drilling blade,
前記穿孔刃と連動して進退し、前記保護具先端が前記穿孔刃の剪断部よりも後方に位置するように前記保護具を前記穿孔刃に外装保持する保持部と、A holding portion that moves forward and backward in conjunction with the perforation blade, and externally holds the protection tool on the perforation blade such that the tip of the protection tool is located behind a shearing portion of the perforation blade,
を備え、With
前記穿孔刃の前進により前記貫通孔を形成した後、さらなる前記穿孔刃の前進によって前記保護具が前記貫通孔に圧入されるように構成され、After forming the through-hole by advancement of the drilling blade, the protection device is configured to be pressed into the through-hole by further advancement of the drilling blade,
前記穿孔刃で前記板材を打ち抜いて前記貫通孔に前記保護具を圧入した後の前記穿孔刃の後退移動の際、前記後退補助部が前記板材の表面に係合し、前記保護具を取着した前記貫通孔からの前記穿孔刃の後退を補助することを特徴とする貫通孔加工装置。When the drilling blade is punched out by the punching blade and the protective tool is pressed into the through hole and the drilling blade is moved backward, the retreating assisting portion engages with the surface of the plate material and attaches the protective tool. A through-hole processing apparatus for assisting retraction of the drilling blade from the through-hole. 前記後退補助部は、前記穿孔刃の前進に伴って前記板材に近接し、且つ、前記穿孔刃の後退移動の際に前記穿孔刃とともに後退移動することなく前記板材表面に係合することを特徴とする請求項２に記載の貫通孔加工装置。 The retreating assisting portion is close to the plate with the advancement of the drilling blade, and engages with the surface of the plate without moving backward with the drilling blade when the drilling blade retreats. The through-hole processing apparatus according to claim 2 , wherein 前記後退補助部は、前記穿孔刃の移動に追従するように前記穿孔刃に外装された筒体であり、
前記穿孔刃の後退移動の際に前記後退補助部が前記穿孔工具本体に係止されることで前記穿孔刃に対して前記穿孔刃の先端側に相対移動し、前記筒体の前端面が前記板材に係合することを特徴とする請求項２に記載の貫通孔加工装置。 The retreating assisting portion is a cylindrical body that is provided on the boring blade so as to follow the movement of the boring blade ,
When the drilling blade is moved backward, the retreating assist portion is locked to the drilling tool main body to relatively move toward the tip side of the drilling blade with respect to the drilling blade, and the front end surface of the tubular body is The through hole processing apparatus according to claim 2 , wherein the through hole processing apparatus engages with a plate material. 前記後退補助部は、前記穿孔刃に外装された筒体であり、前記筒体には、前記保持部への前記保護具の装填の際に手指が入る切り欠きが設けられていることを特徴とする請求項２から４のいずれか一項に記載の貫通孔加工装置。 The retraction auxiliary unit, said a armored tubular body punching blade, characterized in that said tubular body is notched finger enters is provided in the loading of the protective equipment to the holding portion The through-hole processing apparatus according to any one of claims 2 to 4, wherein 前記後退補助部は、前記穿孔工具本体の一部を構成するとともに後退した前記穿孔刃の周囲に延在する壁部であり、前記壁部の当接面は、前記穿孔刃を前進させたときに前記穿孔刃の後方に位置し、且つ、前記穿孔刃を後退させたときに前記穿孔刃の先端側に相対移動して前記板材表面に係合可能であることを特徴とする請求項２に記載の貫通孔加工装置。 The retraction assisting portion is a wall that forms a part of the drilling tool main body and extends around the drilling blade that has retreated, and a contact surface of the wall portion is provided when the drilling blade is advanced. the positioned behind the cutting head, and, in claim 2, wherein a said relative movement on the distal end side of the punching blade when the cutting head is retracted engagable with the plate surface The through hole processing apparatus as described in the above. 前記後退補助部の前記板材に係合する面は、前記穿孔刃を少なくとも完全に後退させた際に、前記穿孔刃の先端の前方に位置することを特徴とする請求項２から６のいずれか一項に記載の貫通孔加工装置。 Said surface for engaging the plate of the reverse auxiliary unit, when the hole punch bit is at least fully retracted, any of claims 2 to 6, characterized in that located in front of the tip of the hole punch bit The through-hole processing device according to claim 1 . 前記後退補助部は、前記穿孔工具本体に可動式に支持され、前記板材の表面に対向するように出没可能な出没体であり、前記出没体には、前記板材表面に前記穿孔工具本体又は前記穿孔刃を近接させた際に前記板材の表面に当接する当接部が設けられていることを特徴とする請求項２に記載の貫通孔加工装置。 The retreat assist portion is a retractable body that is movably supported by the drilling tool main body and that is capable of protruding and retracting so as to face the surface of the plate material. 3. The through-hole processing apparatus according to claim 2 , wherein a contact portion is provided which comes into contact with a surface of the plate material when a drilling blade is brought close to the plate material. 前記穿孔刃に対向するように前記穿孔工具本体に形成され、前記穿孔刃とともに前記保持部に保持された前記保護具を受け入れ可能な開口を備える受け部をさらに備えることを特徴とする請求項２から８のいずれか一項に記載の貫通孔加工装置。 3. The apparatus according to claim 2 , further comprising a receiving portion formed in the drilling tool main body so as to face the drilling blade, and having an opening capable of receiving the protective device held by the holding portion together with the drilling blade. 4. 9. The through-hole processing apparatus according to any one of items 1 to 8 .
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