JP5379452B2 - Fastening tool - Google Patents

Fastening tool Download PDF

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JP5379452B2
JP5379452B2 JP2008293638A JP2008293638A JP5379452B2 JP 5379452 B2 JP5379452 B2 JP 5379452B2 JP 2008293638 A JP2008293638 A JP 2008293638A JP 2008293638 A JP2008293638 A JP 2008293638A JP 5379452 B2 JP5379452 B2 JP 5379452B2
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rod
main body
shaped member
fastening tool
fastener
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JP2010120098A (en
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和也 清水
雄貴 中島
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Japan Climate Systems Corp
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Japan Climate Systems Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening tool facilitating fastening work in which a plurality of types of fastening tools are handled. <P>SOLUTION: The fastening tool includes: a cylindrical body rotatingly driven by an output shaft and having a recess fitted with a first fastening tool therein on the front end; and a rod-like member inserted into the body and having an engagement portion engaged with an engagement hole formed in a second fastening tool. The rod-like member is structured to be displaceable between a first position protruding outward from the front end of the recess of the body and a second position depressed more inward than the bottom of the recess of the body, and is structured to rotate together with the body. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、締結工具に関し、特に複数種の締結具を取り扱う締結工具の作業の簡素化対策に係るものである。   The present invention relates to a fastening tool, and particularly relates to measures for simplifying the work of a fastening tool that handles a plurality of types of fasteners.

従来より、電気やエアー等を駆動源とする回転駆動される締結工具が知られている。   2. Description of the Related Art Conventionally, a fastening tool that is rotationally driven using electricity, air, or the like as a drive source is known.

例えば特許文献1には、この種の締結工具が開示されている。この締結工具は、電動モータを駆動源とする電動機の出力軸に着脱自在に取り付けられている。この締結工具は、いわゆるソケットを構成し、その一端側に出力軸が連結され、その他端側にボルトやナット等の締結具が内嵌する凹部が形成されている。締結工具の使用時には、締結具に対応するソケットを電動機に取り付け、ソケットの凹部内に締結具を嵌入する。この状態で出力軸を回転駆動させると、ソケットが回転して締結具が締め付けられる。
特開2003−136436号公報
For example, Patent Literature 1 discloses this type of fastening tool. This fastening tool is detachably attached to an output shaft of an electric motor using an electric motor as a drive source. This fastening tool constitutes a so-called socket, an output shaft is connected to one end thereof, and a recess into which a fastener such as a bolt or a nut is fitted is formed on the other end. When the fastening tool is used, a socket corresponding to the fastener is attached to the electric motor, and the fastener is inserted into the recess of the socket. When the output shaft is driven to rotate in this state, the socket rotates and the fastener is tightened.
JP 2003-136436 A

ところで、上記のような締結作業においては、ソケットに対応するボルトやナット等の締結具以外にも、例えば六角棒スパナ(いわゆる六角レンチ)でしか対応できない六角穴付きボルト等の締結具を用いることがある。このため、このような六角穴付きボルトを取り扱う場合には、電動機の出力軸に六角棒スパナを取り付けて作業を行う必要があった。即ち、上記の2種類の締結具を用いて組み立て作業等を行う場合には、締結具に対応するようにソケットや六角棒スパナ等をその都度交換する必要があり、作業の繁雑化を招くという問題が生じていた。   By the way, in the fastening operation as described above, in addition to the fasteners such as bolts and nuts corresponding to the socket, for example, a fastener such as a hexagon socket head bolt that can be handled only by a hexagonal bar spanner (so-called hexagon wrench) is used. There is. For this reason, when handling such a hexagon socket head cap screw, it was necessary to work by attaching a hexagon stick spanner to the output shaft of the electric motor. That is, when an assembly operation or the like is performed using the two types of fasteners described above, it is necessary to replace the socket, the hexagon stick spanner, or the like so as to correspond to the fasteners, resulting in complicated operations. There was a problem.

本発明は、かかる点に鑑みてなされたものであり、その目的は、複数種の締結具を取り扱う締結作業を容易に行うことができる締結工具を提供することである。   This invention is made | formed in view of this point, The objective is to provide the fastening tool which can perform the fastening operation | work which handles multiple types of fasteners easily.

第1の発明は、締結工具を対象とし、出力軸に回転駆動されると共に先端に第1の締結具が内嵌する凹部が形成される筒状の本体部と、該本体部に内挿されると共に先端に第2の締結具の嵌合穴に係合する係合部が形成される棒状部材とを備え、該棒状部材は、上記本体部の凹部の先端から上記係合部が外方に突出する第1位置と、該本体部の凹部の底部よりも内方へ陥没する第2位置との間を該本体部の軸方向に変位自在に構成され、且つ上記本体部と一体的に回転するように構成され、上記本体部の内部には、上記棒状部材の基端側に収容されるとともに、該棒状部材が上記第1位置となるように伸張し、且つ上記第2位置の棒状部材に押し付けられて収縮するスプリングが設けられていることを特徴とする。 A first invention is directed to a fastening tool, is rotationally driven by an output shaft, and has a cylindrical main body portion in which a concave portion into which a first fastener is fitted is formed at a tip, and is inserted into the main body portion. And a rod-shaped member formed with an engaging portion that engages with the fitting hole of the second fastener at the tip, and the rod-shaped member has the engaging portion outward from the tip of the concave portion of the main body portion. It is configured to be displaceable in the axial direction of the main body portion between a first position that protrudes and a second position that is recessed inward from the bottom of the concave portion of the main body portion, and rotates integrally with the main body portion. The rod-shaped member is accommodated inside the main body portion on the base end side of the rod-shaped member, extends so that the rod-shaped member is at the first position, and the rod-shaped member at the second position. A spring that is pressed against and contracts is provided .

第1の発明では、筒状の本体部の内部に棒状部材が内挿され、この棒状部材が第1位置と第2位置との間を変位自在となっている。棒状部材を第1位置にすると、棒状部材が本体部の凹部よりも外方へ突出する状態となる。これにより、棒状部材の先端を第2の締結具(例えば六角穴付きボルト)の嵌合穴に係合させることができる。この状態から、出力軸を回転させると、出力軸に取り付けられる本体部も回転駆動される。本体部が回転すると、本体部に内挿される棒状部材も本体部と一体的に回転する。その結果、第2の締結具は、棒状部材によって回動され、締め付け又は締め付けの解除がなされる。   In the first invention, a rod-shaped member is inserted inside the cylindrical main body, and the rod-shaped member is displaceable between the first position and the second position. When the rod-shaped member is set to the first position, the rod-shaped member protrudes outward from the concave portion of the main body portion. Thereby, the front-end | tip of a rod-shaped member can be engaged with the fitting hole of a 2nd fastener (for example, hexagon socket head bolt). When the output shaft is rotated from this state, the main body attached to the output shaft is also rotationally driven. When the main body portion rotates, the rod-like member inserted into the main body portion also rotates integrally with the main body portion. As a result, the second fastener is rotated by the rod-shaped member, and tightening or releasing of the tightening is performed.

一方、棒状部材を第2位置にすると、棒状部材が本体部の凹部の底部よりも内方へ陥没した状態となる。これにより、本体部の凹部に第1の締結具(例えば六角ボルト)を内嵌させることができる。この状態から、出力軸を回転させると、本体部が回転駆動される。
その結果、第1の締結具は、本体部の凹部によって回動され、締め付け又は締め付けの解除がなされる。
On the other hand, when the rod-shaped member is set to the second position, the rod-shaped member is depressed inward from the bottom of the concave portion of the main body. Thereby, a 1st fastener (for example, hexagon bolt) can be internally fitted in the recessed part of a main-body part. When the output shaft is rotated from this state, the main body is rotationally driven.
As a result, the first fastener is rotated by the concave portion of the main body portion, and is tightened or released.

の発明は、スプリングによって棒状部材が第1位置側へ付勢される。このため、例えば棒状部材を第1位置として第2の締結具を締め付ける際、棒状部材が本体部の内方へ押し込まれて係合が解除されることが抑制される。一方、例えば第1の締結具を締め付ける際には、スプリングに抗して棒状部材を本体部の内方へ押し付けるようにしながら、本体部の凹部に第1の締結具を内嵌させる。 In the first invention, the rod-shaped member is biased toward the first position by the spring . For this reason, for example, when the second fastener is tightened with the rod-shaped member as the first position, the engagement of the rod-shaped member being pushed inward of the main body portion is suppressed. On the other hand, for example, when the first fastener is tightened, the first fastener is fitted into the concave portion of the main body while pressing the rod-shaped member inward of the main body against the spring .

の発明は、第1の発明において、上記本体部の内周側には、軸直角断面が多角形状となる角状内壁部が形成され、上記棒状部材の外周側には、軸直角断面が多角形状となって上記本体部の角状内壁部に嵌合する角状外壁部が形成されていることを特徴とする。 According to a second aspect of the present invention, in the first aspect of the present invention , a rectangular inner wall portion having a polygonal rectangular cross section is formed on the inner peripheral side of the main body, and an axial cross section is formed on the outer peripheral side of the rod-shaped member. Is formed into a polygonal shape, and a rectangular outer wall portion that fits into the rectangular inner wall portion of the main body portion is formed.

の発明では、本体部の内周側に形成された角状内壁部に、棒状部材の角状外壁部が嵌合する。これにより、棒状部材は、本体部内での軸方向の変位が許容されるが、本体部に対する相対的な回転運動が禁止される。従って、棒状部材は、本体部と一体的にしか回転できないことになる。 In 2nd invention, the square outer wall part of a rod-shaped member fits into the square inner wall part formed in the inner peripheral side of the main-body part. As a result, the rod-like member is allowed to move in the axial direction within the main body, but is not allowed to rotate relative to the main body. Therefore, the rod-shaped member can only rotate integrally with the main body.

の発明は、第1又は第2の発明において、上記本体部の外周側には、上記第1位置の棒状部材を保持する第1操作位置と、該棒状部材の保持を解除する第2操作位置とに変位自在な操作部材が設けられていることを特徴とする。 According to a third invention, in the first or second invention , on the outer peripheral side of the main body portion, a first operation position for holding the rod-like member at the first position, and a second operation for releasing the holding of the rod-like member. An operation member that is displaceable to the operation position is provided.

の発明では、本体部の外周に操作部材が設けられ、この操作部材を第1操作位置と第2操作位置とに切り替えることができる。操作部材を第1操作位置とすると、棒状部材が第1位置に保持される。このため、例えば第2の締結具を棒状部材によって締結する際、棒状部材が本体部の内方へ押し込まれてしまって係合が解除されることが確実に抑制される。一方、操作部材を第2操作位置とすると、棒状部材の保持が解除されて棒状部材の変位運動が許容される。このため、例えば棒状部材を第2位置とし、第1の締結具を本体部の凹部によって締結することができる。 In the third invention, an operation member is provided on the outer periphery of the main body, and the operation member can be switched between the first operation position and the second operation position. When the operation member is set to the first operation position, the rod-shaped member is held at the first position. For this reason, for example, when the second fastener is fastened by the rod-like member, it is reliably suppressed that the rod-like member is pushed inward of the main body and the engagement is released. On the other hand, when the operation member is set to the second operation position, the holding of the rod-shaped member is released and the displacement movement of the rod-shaped member is allowed. For this reason, for example, the rod-shaped member can be set to the second position, and the first fastener can be fastened by the concave portion of the main body.

本発明によれば、棒状部材を第1位置とすることで、第2の締結具を棒状部材によって締結でき、且つ棒状部材を第2位置とすることで、第1の締結具を本体部の凹部によって締結できる。即ち、本発明によれば、ソケット等の交換を行うことなく、2種類の締結具の締結作業を連続して行うことができるので、組立て作業等の容易化を図ることができる。   According to the present invention, by setting the rod-shaped member to the first position, the second fastener can be fastened by the rod-shaped member, and by setting the rod-shaped member to the second position, the first fastener can be attached to the body portion. It can be fastened by the recess. That is, according to the present invention, it is possible to continuously perform the fastening operation of the two types of fasteners without exchanging the socket or the like, so that the assembly operation and the like can be facilitated.

また、第の発明によれば、棒状部材をスプリングによって第1位置に付勢するようにしたので、第2の締結具に対する棒状部材の係合が解除されてしまうことを防止でき、作業性が向上する。特に、第の発明によれば、操作部材によって棒状部材を第1位置に保持できるようにしたので、第2の締結具に対する棒状部材の係合が解除されてしまうことを一層確実に防止できる。 In addition, according to the first invention, since the rod-shaped member is biased to the first position by the spring , it is possible to prevent the engagement of the rod-shaped member with the second fastener from being released, and workability is improved. Will improve. In particular, according to the third invention, since the rod-like member can be held at the first position by the operation member, the engagement of the rod-like member with the second fastener can be prevented more reliably. .

また、第の発明では、本体部の内壁部を多角形状とし、内部に棒状部材を嵌合するようにしている。このため、例えば第2の締結具を棒状部材によって締結する際、本体部だけが空回りしてしまうことを回避でき、第2の締結具を確実に締結することができる。 In the second invention, the inner wall portion of the main body is polygonal and the rod-like member is fitted inside. For this reason, for example, when the second fastener is fastened by the rod-shaped member, it is possible to avoid that only the main body is idle, and the second fastener can be securely fastened.

以下、本発明の実施形態を図面に基づいて詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

本発明の実施形態について説明する。実施形態に係る締結工具(10)は、電動機の出力軸(図示省略)に着脱自在に取り付けられる。つまり、この締結工具(10)は、電動式工具の交換部品を構成している。   An embodiment of the present invention will be described. The fastening tool (10) according to the embodiment is detachably attached to an output shaft (not shown) of the electric motor. That is, the fastening tool (10) constitutes a replacement part for the electric tool.

図1に示すように、締結工具(10)は、軸方向に延びる略筒状の本体部(20)を有している。本体部(20)は、両端が開口する円筒状のソケット部(30)と、該ソケット部(30)の一端(図1における上端)側の開口を閉塞するプラグ部(21)とを有している。ソケット部(30)とプラグ部(21)とは、抜け止めピン(22)によって連結の解除が禁止されている。プラグ部(21)には、その軸方向端面に出力軸が係合する係合溝(23)が形成されている。また、プラグ部(21)には、本体部(20)と出力軸とを連結するピン(図示省略)が挿通されるピン穴(24)が径方向に貫通して形成されている。   As shown in FIG. 1, the fastening tool (10) has a substantially cylindrical main body (20) extending in the axial direction. The main body (20) has a cylindrical socket (30) whose both ends are open and a plug (21) which closes an opening on one end (the upper end in FIG. 1) of the socket (30). ing. The socket part (30) and the plug part (21) are prohibited from being disconnected by the retaining pin (22). The plug portion (21) has an engagement groove (23) that engages with the output shaft at the axial end surface thereof. Further, the plug portion (21) is formed with a pin hole (24) through which a pin (not shown) connecting the main body portion (20) and the output shaft is inserted in the radial direction.

ソケット部(30)は、縦長の胴部(31)と、該胴部(31)の一端側の取り付け部(32)と、胴部(31)の他端側の凹部(33)とが一体的に形成されている。取り付け部(32)には、上方に向かって開口が形成され、この開口に上記のプラグ部(21)が嵌め込まれている。   The socket part (30) has a vertically long body part (31), an attachment part (32) on one end side of the body part (31), and a recess part (33) on the other end side of the body part (31). Is formed. An opening is formed in the attachment portion (32) upward, and the plug portion (21) is fitted into this opening.

ソケット部(30)の凹部(33)は、第1の締結具としての六角ボルト(B1)が内嵌するように構成されている。つまり、凹部(33)は、その外周面が円形に形成される一方、その内周面は軸直角断面が六角形状をしている。即ち、凹部(33)の内部には、六角ボルト(B1)の頭部が嵌り込むように六角柱状の空間(S)が形成されている。この空間(S)の軸心は、出力軸ないし本体部(20)の軸心と一致している。   The recessed part (33) of the socket part (30) is configured such that a hexagon bolt (B1) as a first fastener is fitted therein. That is, while the outer peripheral surface of the recess (33) is formed in a circular shape, the inner peripheral surface of the concave portion (33) has a hexagonal cross section perpendicular to the axis. That is, a hexagonal columnar space (S) is formed in the recess (33) so that the head of the hexagon bolt (B1) is fitted. The axis of this space (S) coincides with the axis of the output shaft or the main body (20).

胴部(31)の上端の開口は、小径プラグ(34)によって閉塞されている。また、胴部(31)の内側には、断面円形状の内壁面を形成する円状内壁部(31a)と、断面六角形状の内壁を形成する角状内壁部(31b)とが形成されている。円状内壁部(31a)は、胴部(31)における上側寄りに、角状内壁部(31b)は、胴部(31)における下流側寄りに形成されている。円状内壁部(31a)の内径は、ソケット部(30)の凹部(33)の内径(軸心から頂点までの径)よりも短くなっている。また、角状内壁部(31b)の内径(軸心から頂点までの径)は、円状内壁部(31a)の内径よりも短くなっている。   The opening at the upper end of the trunk (31) is closed by a small diameter plug (34). In addition, a circular inner wall portion (31a) that forms an inner wall surface having a circular cross section and a rectangular inner wall portion (31b) that forms an inner wall having a hexagonal cross section are formed inside the body portion (31). Yes. The circular inner wall portion (31a) is formed closer to the upper side of the body portion (31), and the rectangular inner wall portion (31b) is formed closer to the downstream side of the body portion (31). The inner diameter of the circular inner wall (31a) is shorter than the inner diameter (diameter from the axis to the apex) of the recess (33) of the socket (30). Further, the inner diameter (diameter from the axis to the apex) of the rectangular inner wall (31b) is shorter than the inner diameter of the circular inner wall (31a).

本体部(20)のソケット部(30)の内部には、棒状部材(40)が内挿されている。棒状部材(40)は、角状本体部(41)と抜け止め部(42)と六角ビット部(43)とを有している。角状本体部(41)は、軸直角断面が六角形状となって軸方向に延びている。つまり、角状本体部(41)の外周面は、胴部(31)の角状内壁部(31b)に嵌合する角状外壁部を構成している。これにより、角状本体部(41)は、軸方向の変位が許容される一方、周方向の回動が禁止されている。抜け止め部(42)は、角状本体部(41)の上端に一体的に形成されている。抜け止め部(42)は、円柱状に形成されており、円状内壁部(31a)に僅かな隙間を介して内嵌している。抜け止め部(42)は、角状本体部(41)よりも大径となっている。これにより、抜け止め部(42)の下端が、角状内壁部(31b)の上端と当接することで、棒状部材(40)がソケット部(30)内から抜け外れることが禁止されている。   A rod-like member (40) is inserted into the socket part (30) of the main body part (20). The rod-like member (40) has a rectangular main body portion (41), a retaining portion (42), and a hexagonal bit portion (43). The rectangular main body (41) has a cross section perpendicular to the axis of a hexagon and extends in the axial direction. That is, the outer peripheral surface of the rectangular main body portion (41) constitutes a rectangular outer wall portion that fits into the rectangular inner wall portion (31b) of the trunk portion (31). Thereby, the angular main body (41) is allowed to be displaced in the axial direction, but is prohibited from rotating in the circumferential direction. The retaining portion (42) is formed integrally with the upper end of the rectangular main body portion (41). The retaining portion (42) is formed in a columnar shape, and is fitted into the circular inner wall portion (31a) via a slight gap. The retaining portion (42) has a larger diameter than the rectangular main body portion (41). Accordingly, the lower end of the retaining portion (42) is in contact with the upper end of the rectangular inner wall portion (31b), thereby preventing the rod-shaped member (40) from being detached from the socket portion (30).

六角ビット部(43)は、角状本体部(41)の先端に形成されている。六角ビット部(43)は、第2の締結具としての六角穴付きボルト(B2)の嵌合穴(六角穴)に係合する係合部を構成している。六角ビット部(43)は、角状本体部(41)の端部と連接する台形円錐状のテーパ部(43a)と、該テーパ部(43a)の先端部と連接する円柱状の基部(43b)と、該基部(43b)の先端に形成される六角部(43c)とで構成されている。そして、六角ビット部(43)の六角部(43c)が、六角穴付きボルト(B2)の六角穴に係合ないし内嵌するように構成されている。   The hexagonal bit portion (43) is formed at the tip of the rectangular main body portion (41). The hexagonal bit portion (43) constitutes an engaging portion that engages with a fitting hole (hexagonal hole) of a hexagonal socket bolt (B2) as a second fastener. The hexagonal bit portion (43) includes a trapezoidal conical tapered portion (43a) connected to the end portion of the rectangular main body portion (41), and a columnar base portion (43b) connected to the tip end portion of the tapered portion (43a). ) And a hexagonal portion (43c) formed at the tip of the base portion (43b). The hexagonal portion (43c) of the hexagonal bit portion (43) is configured to engage or fit into the hexagonal hole of the hexagonal socket head bolt (B2).

ソケット部(30)の内部には、棒状部材(40)と小径プラグ(34)との間にスプリング(50)が介設されている。なお、小径プラグ(34)の下端部と抜け止め部(42)の上端部とには、スプリング(50)の端部がそれぞれ外嵌する、突起部(34a,42a)が形成されている。スプリング(50)は、一端が小径プラグ(34)に当接して他端が抜け止め部(42)に当接しており、棒状部材(40)を第1位置へ付勢する付勢部材を構成している。   Inside the socket part (30), a spring (50) is interposed between the rod-shaped member (40) and the small-diameter plug (34). The lower end of the small diameter plug (34) and the upper end of the retaining portion (42) are formed with projections (34a, 42a) to which the ends of the spring (50) are fitted. The spring (50) has one end abutting on the small diameter plug (34) and the other end abutting on the retaining portion (42), and constitutes a biasing member that biases the rod-shaped member (40) to the first position. doing.

即ち、棒状部材(40)は、本体部(20)の軸方向において、第1位置(図1(A)に示す位置)と第2位置(図1(B)に示す位置)との間を変位するように構成されている。ここで、第1位置は、棒状部材(40)の六角部(43c)が、ソケット部(30)の凹部(33)の先端から外方に突出する位置である。つまり、棒状部材(40)が第1位置になると、六角部(43c)を第2締結具に係合可能となる。一方、第2位置は、棒状部材(40)の六角部(43c)が、ソケット部(30)の凹部(33)の底部よりも内方へ陥没する位置である。
つまり、棒状部材(40)が第2位置になると、凹部(33)内に柱状空間(S)が形成されるので、凹部(33)内に第1締結具を内嵌可能となる。上記の如く、スプリング(50)は、棒状部材(40)を第2位置から第1位置へ向かって付勢する。このため、ユーザー等が棒状部材(40)を本体部(20)の内部側へ押し込まない限り、棒状部材(40)は第1位置に保持されている。
That is, the rod-like member (40) is located between the first position (position shown in FIG. 1 (A)) and the second position (position shown in FIG. 1 (B)) in the axial direction of the main body (20). It is configured to be displaced. Here, the first position is a position where the hexagonal portion (43c) of the rod-like member (40) protrudes outward from the tip of the recess (33) of the socket portion (30). That is, when the rod-shaped member (40) is in the first position, the hexagonal portion (43c) can be engaged with the second fastener. On the other hand, the second position is a position where the hexagonal portion (43c) of the rod-like member (40) is recessed inward from the bottom of the recess (33) of the socket portion (30).
That is, when the rod-shaped member (40) is in the second position, the columnar space (S) is formed in the recess (33), so that the first fastener can be fitted in the recess (33). As described above, the spring (50) biases the rod-shaped member (40) from the second position toward the first position. For this reason, unless the user or the like pushes the rod-like member (40) into the inside of the main body (20), the rod-like member (40) is held in the first position.

−作業例−
次に、上述した締結工具(10)を用いた作業例について説明する。ここでは、車両空調用の冷媒回路の一部を構成する、エバポレータアッシーの組立て作業について説明する。
-Work example-
Next, an operation example using the fastening tool (10) described above will be described. Here, the assembly work of the evaporator assembly which constitutes a part of the refrigerant circuit for vehicle air conditioning will be described.

図2に示すように、エバポレータアッシー(80)は、蒸発器(81)と、膨張弁(82)と、冷媒配管(83)とが組み合わされて構成される。ここで、膨張弁(82)は、2本の六角穴付きボルト(B2)によって蒸発器(81)のヘッダ部に締結される。また、冷媒配管(83)は、1本の六角ボルト(B1)によって膨張弁(82)に締結される。即ち、エバポレータアッシー(80)では、六角ボルト(B1)と六角穴付きボルト(B2)とから成る2種類の締結具が用いられている。   As shown in FIG. 2, the evaporator assembly (80) is configured by combining an evaporator (81), an expansion valve (82), and a refrigerant pipe (83). Here, the expansion valve (82) is fastened to the header portion of the evaporator (81) by two hexagon socket head cap screws (B2). The refrigerant pipe (83) is fastened to the expansion valve (82) by a single hexagon bolt (B1). That is, in the evaporator assembly (80), two types of fasteners including a hexagon bolt (B1) and a hexagon socket head bolt (B2) are used.

本実施形態の締結工具(10)を用いて組み立て作業を行う場合、まず、締結工具(10)を図1(A)に示す第1位置とする。つまり、締結工具(10)の六角ビット部(43)を凹部(33)の外方へ突出させる。次いで、蒸発器(81)と膨張弁(82)とを組み付けた状態で、六角穴付きボルト(B2)の六角穴に六角部(43c)を係合させ、電動機の出力軸を回転させる。これにより、締結工具(10)では、本体部(20)のソケット部(30)が回転駆動される。ソケット部(30)が回転すると、ソケット部(30)の角状内壁部(31b)に嵌合する棒状部材(40)も、本体部(20)と一体的に回転する。その結果、六角穴付きボルト(B2)は、六角ビット部(43)によって締結される。なお、ここでの六角穴付きボルト(B2)の締め付けトルクは、例えば4.5N・mである。   When performing assembly work using the fastening tool (10) of the present embodiment, first, the fastening tool (10) is set to the first position shown in FIG. That is, the hexagonal bit portion (43) of the fastening tool (10) is protruded outward from the recess (33). Next, in a state where the evaporator (81) and the expansion valve (82) are assembled, the hexagonal portion (43c) is engaged with the hexagonal hole of the hexagonal socket head bolt (B2), and the output shaft of the electric motor is rotated. Thereby, in a fastening tool (10), the socket part (30) of a main-body part (20) is rotationally driven. When the socket part (30) rotates, the rod-like member (40) fitted to the rectangular inner wall part (31b) of the socket part (30) also rotates integrally with the main body part (20). As a result, the hexagon socket head bolt (B2) is fastened by the hexagonal bit portion (43). The tightening torque of the hexagon socket head bolt (B2) here is, for example, 4.5 N · m.

次いで、膨張弁(82)に冷媒配管(83)を組み付けた状態で、六角ボルト(B1)を締結穴に嵌め込む。この状態から、六角ビット部(43)の先端を六角ボルト(B1)の頭部に押し付けると、棒状部材(40)は、スプリング(50)の付勢力に抗して、本体部(20)の内部に変位する。これにより、締結工具(10)が図1(B)に示す第2位置となり、六角ボルト(B1)の頭部が凹部(33)に内嵌する。この状態から、出力軸を回転させると、ソケット部(30)が回転駆動され、六角ボルト(B1)は凹部(33)によって締結される。なお、ここでの六角ボルト(B1)の締め付けトルクは、例えば8.3N・mである。   Next, with the refrigerant pipe (83) assembled to the expansion valve (82), the hexagon bolt (B1) is fitted into the fastening hole. From this state, when the tip of the hexagonal bit part (43) is pressed against the head of the hexagonal bolt (B1), the rod-like member (40) resists the urging force of the spring (50) and the main part (20) Displaces inside. Thereby, a fastening tool (10) becomes a 2nd position shown in Drawing 1 (B), and the head of a hexagon bolt (B1) fits into a crevice (33). When the output shaft is rotated from this state, the socket portion (30) is rotationally driven, and the hexagon bolt (B1) is fastened by the recess (33). Here, the tightening torque of the hexagon bolt (B1) is, for example, 8.3 N · m.

以上のような作業により、六角ボルト(B1)と六角穴付きボルト(B2)との双方の締結具を、締結工具(10)の交換を行うことなく締結することができる。これにより、組立て作業(締結作業)の効率が向上する。なお、エバポレータアッシー(80)を分解する作業を行う場合には、上記の組立て作業と逆の手順で、同様の作業を行えば良い。   Through the operations as described above, both the hexagon bolt (B1) and the hexagon socket head bolt (B2) can be fastened without exchanging the fastening tool (10). Thereby, the efficiency of assembly work (fastening work) improves. In addition, when performing the operation | work which decomposes | disassembles an evaporator assembly (80), the same operation | work should just be performed in the reverse procedure of said assembly operation | work.

−実施形態の効果−
上記実施形態によれば、棒状部材(40)を図1(A)に示す第1位置とすることで、六角穴付きボルト(B2)を六角ビット部(43)によって締結でき、且つ棒状部材(40)を図1(B)に示す第2位置とすることで、六角ボルト(B1)を凹部(33)によって締結できる。即ち、本発明によれば、電動機の出力軸に交換可能に取り付けられる締結工具(10)を交換することなく、六角穴付きボルト(B2)と六角ボルト(B1)の締結作業を連続して行うことができる。従って、締結工具の取り外し、交換の作業が省略されるので、組立て作業の短縮化を図ることができる。
-Effect of the embodiment-
According to the above embodiment, the hexagon socket head bolt (B2) can be fastened by the hexagonal bit portion (43) by setting the rod-like member (40) to the first position shown in FIG. By setting 40) to the second position shown in FIG. 1 (B), the hexagon bolt (B1) can be fastened by the recess (33). That is, according to the present invention, the fastening operation of the hexagon socket head bolt (B2) and the hexagon bolt (B1) is continuously performed without replacing the fastening tool (10) attached to the output shaft of the electric motor in a replaceable manner. be able to. Accordingly, since the removal and replacement work of the fastening tool is omitted, the assembly work can be shortened.

また、締結工具(10)では、棒状部材(40)がスプリング(50)によって第1位置に付勢されている。このため、六角ビット部(43)を第1位置に保持させることができ、六角ビット部(43)による六角穴付きボルト(B2)の締結作業の作業性が向上する。また、本体部(20)のソケット部(30)の内周面に角状内壁部(31b)を形成し、この角状内壁部(31b)に角状本体部(41)を嵌合させるようにしたので、ソケット部(30)と棒状部材(40)との回転方向における密着性を向上できる。従って、ソケット部(30)と共に棒状部材(40)を回転させて六角穴付きボルト(B2)を締結する際、棒状部材(40)がソケット部(30)内で空回りしてしまうのを防止できる。   In the fastening tool (10), the rod-like member (40) is biased to the first position by the spring (50). For this reason, a hexagonal bit part (43) can be hold | maintained in a 1st position, and the workability | operativity of the fastening operation | work of the hexagon socket head bolt (B2) by a hexagonal bit part (43) improves. Further, a rectangular inner wall portion (31b) is formed on the inner peripheral surface of the socket portion (30) of the main body portion (20), and the rectangular main body portion (41) is fitted to the rectangular inner wall portion (31b). Since it was made, the adhesiveness in the rotation direction of a socket part (30) and a rod-shaped member (40) can be improved. Accordingly, when the hexagon socket head bolt (B2) is fastened by rotating the rod-like member (40) together with the socket portion (30), the rod-like member (40) can be prevented from spinning in the socket portion (30). .

《実施形態の変形例》
図3に示す変形例は、上記実施形態の締結工具(10)に保持機構(60)を付与したものである。保持機構(60)は、操作部材(61)とボール(62)と大径スプリング(63)とボール溝部(64)とを有している。
<< Modification of Embodiment >>
The modification shown in FIG. 3 is obtained by adding a holding mechanism (60) to the fastening tool (10) of the above embodiment. The holding mechanism (60) includes an operation member (61), a ball (62), a large-diameter spring (63), and a ball groove portion (64).

操作部材(61)は、ソケット部(30)の胴部(31)の外周に嵌め込まれている。胴部(31)には、操作部材(61)の下端部と当接する環状のストッパ部材(65)が固定されている。そして、操作部材(61)は、胴部(31)の外周において、図3の(A)に示す第1操作位置と、図3(B)に示す第2操作位置との間で、軸方向の変位が許容されている。   The operation member (61) is fitted on the outer periphery of the body part (31) of the socket part (30). An annular stopper member (65) that is in contact with the lower end portion of the operation member (61) is fixed to the body portion (31). The operating member (61) is axially disposed between the first operating position shown in FIG. 3 (A) and the second operating position shown in FIG. 3 (B) on the outer periphery of the body (31). Displacement of is allowed.

操作部材(61)の内周には、その下端部に第1突起部(61a)が形成され、その中間部に第2突起部(61b)が形成されている。第1突起部(61a)及び第2突起部(61b)はそれぞれ環状に形成され、その内周面が胴部(31)の外周面と摺接している。また、第1突起部(61a)と第2突起部(61b)との間には、環状溝(61c)が形成されている。環状溝(61c)は、操作部材(61)の下側寄りに形成されている。環状溝(61c)は、上記ボール(62)の一部が嵌り込むように構成されている。   A first protrusion (61a) is formed at the lower end of the inner periphery of the operating member (61), and a second protrusion (61b) is formed at the middle. The first protrusion (61a) and the second protrusion (61b) are each formed in an annular shape, and the inner peripheral surface thereof is in sliding contact with the outer peripheral surface of the trunk portion (31). An annular groove (61c) is formed between the first protrusion (61a) and the second protrusion (61b). The annular groove (61c) is formed on the lower side of the operation member (61). The annular groove (61c) is configured such that a part of the ball (62) is fitted therein.

この変形例の胴部(31)には、リング部材(31c)がOリング(31d)を介して保持されている。リング部材(31c)は、操作部材(61)の上側の開放部を閉塞している。そして、リング部材(31c)、操作部材(61)、胴部(31)、及び第2突起部(61b)との間には、上記大径スプリング(63)が嵌め込まれる収容空間(63a)が区画されている。大径スプリング(63)は、一端がリング部材(31c)に当接して他端が第2突起部(61b)に当接しており、操作部材(61)を第1操作位置へ付勢する付勢部材を構成している。   The ring member (31c) is held via the O-ring (31d) on the body (31) of this modification. The ring member (31c) closes the upper open portion of the operation member (61). And the accommodation space (63a) in which the said large diameter spring (63) is engage | inserted between a ring member (31c), an operation member (61), a trunk | drum (31), and a 2nd projection part (61b). It is partitioned. The large-diameter spring (63) has one end in contact with the ring member (31c) and the other end in contact with the second protrusion (61b), and biases the operating member (61) to the first operating position. A force member is formed.

胴部(31)には、上記ボール(62)が嵌り込むボール開口部(31e)が形成されている。ボール開口部(31e)は、ボール(62)と同等の直径の円形の穴を形成している。また、上記ボール溝部(64)は、棒状部材(40)の上端部寄りに形成されている。ボール溝部(64)は、軸方向断面が円弧状となる環状の溝を形成しており、このボール溝部(64)内にも上記ボール(62)が嵌り込むように構成されている。   The body (31) has a ball opening (31e) into which the ball (62) is fitted. The ball opening (31e) forms a circular hole having the same diameter as the ball (62). The ball groove (64) is formed near the upper end of the rod-like member (40). The ball groove portion (64) forms an annular groove having an arc cross section in the axial direction, and the ball (62) is also fitted into the ball groove portion (64).

この変形例では、操作部材(61)を第1操作位置とすることで、第2突起部(61b)の先端によってボール(62)が径方向内側に押し込まれ、このボール(62)がボール開口部(31e)を通じて、棒状部材(40)のボール溝部(64)に嵌り込む(図3(A)を参照)。これにより、棒状部材(40)は、上記の第1位置で保持され、軸方向の変位が禁止される。従って、操作部材(61)を第1操作位置とすることで、棒状部材(40)が第2位置側へ変位してしまうことが確実に防止される。このため、上述のようにして、六角ビット部(43)を穴付き六角ボルト(B2)に係合させて締結作業を行う際、棒状部材(40)が本体部(20)の内方へ押し込まれて作業性が低下してしまうのを確実に回避できる。   In this modification, by setting the operating member (61) to the first operating position, the ball (62) is pushed inward in the radial direction by the tip of the second protrusion (61b), and the ball (62) is opened to the ball. It fits into the ball groove part (64) of the rod-shaped member (40) through the part (31e) (see FIG. 3 (A)). As a result, the rod-like member (40) is held at the first position and the axial displacement is prohibited. Therefore, by setting the operating member (61) to the first operating position, the rod-shaped member (40) is reliably prevented from being displaced toward the second position. Therefore, as described above, the rod-like member (40) is pushed inward of the main body (20) when the hexagonal bit (43) is engaged with the hexagon bolt (B2) with a hole to perform the fastening operation. Therefore, it is possible to reliably avoid the deterioration of workability.

一方、操作部材(61)を第2操作位置とすると、ボール(62)が操作部材(61)の環状溝(61c)に嵌り込む。これにより、棒状部材(40)のボール溝部(64)から外れた状態となる。その結果、ボール(62)による棒状部材(40)の保持が解除され、棒状部材(40)の軸方向の変位が許容される。これにより、図3(B)に示すように、棒状部材(40)を第2位置に変位させることができ、上述のように、凹部(33)に六角ボルト(B1)を内嵌させて締結作業を行うことができる。   On the other hand, when the operation member (61) is set to the second operation position, the ball (62) is fitted into the annular groove (61c) of the operation member (61). Thereby, it will be in the state which removed from the ball groove part (64) of the rod-shaped member (40). As a result, the holding of the rod-shaped member (40) by the ball (62) is released, and the displacement of the rod-shaped member (40) in the axial direction is allowed. As a result, as shown in FIG. 3 (B), the rod-like member (40) can be displaced to the second position, and as described above, the hexagon bolt (B1) is fitted into the recess (33) and fastened. Work can be done.

《その他の実施形態》
上記実施形態については、以下のような構成としてもよい。
<< Other Embodiments >>
About the said embodiment, it is good also as the following structures.

上記実施形態では、凹部(33)の内壁を六角形として、この凹部(33)に第1締結具としての六角ボルト(B1)を内嵌させている。しかしながら、例えば図4に示すように、凹部(33)の十二角形状の内壁部を形成し、この凹部(33)に六角ボルト(B1)等を内嵌させても良い。また、これ以外にも第1締結具の頭部の形状に応じて、凹部(33)の内壁部を他の形状としても良い。同様に、第2締結具の嵌合穴の形状に応じて、係合部としての六角ビット部(43)の外壁部を他の形状としても良い。   In the said embodiment, the inner wall of the recessed part (33) is made into a hexagon, and the hexagon bolt (B1) as a 1st fastener is internally fitted in this recessed part (33). However, for example, as shown in FIG. 4, a dodecagonal inner wall portion of the recess (33) may be formed, and a hexagonal bolt (B1) or the like may be fitted into the recess (33). In addition to this, the inner wall portion of the recess (33) may have other shapes according to the shape of the head of the first fastener. Similarly, according to the shape of the fitting hole of the second fastener, the outer wall portion of the hexagonal bit portion (43) as the engaging portion may have another shape.

また、上記実施形態の締結工具(10)は、電動機を駆動源とする電動式工具に用いられているが、例えばエアモータ等の他の機構を駆動源とする工具に用いることもできる。   Moreover, although the fastening tool (10) of the said embodiment is used for the electric tool which uses an electric motor as a drive source, it can also be used for the tool which uses other mechanisms, such as an air motor, for example.

以上説明したように、本発明は、締結工具に関し、特に複数種の締結具を取り扱う締結工具の作業の簡素化対策について有用である。   As described above, the present invention relates to a fastening tool, and is particularly useful for measures for simplifying the work of a fastening tool that handles a plurality of types of fasteners.

実施形態に係る締結工具の全体構成を示す縦断面図であり、図1(A)は棒状部材を第1位置とした状態を、図1(B)は棒状部材を第2位置とした状態をそれぞれ示すものである。It is a longitudinal cross-sectional view which shows the whole structure of the fastening tool which concerns on embodiment, FIG. 1 (A) shows the state which made the rod-shaped member the 1st position, FIG.1 (B) shows the state which made the rod-shaped member the 2nd position. Each is shown. 実施形態に係る締結工具によって組立てられるエバポレータアッシーの概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the evaporator assembly assembled with the fastening tool which concerns on embodiment. 実施形態の変形例に係る締結工具の縦断面図であり、図3(A)は棒状部材を第1位置とした状態を、図3(B)は棒状部材を第2位置とした状態をそれぞれ示すものである。It is a longitudinal cross-sectional view of the fastening tool which concerns on the modification of embodiment, FIG. 3 (A) shows the state which made the rod-shaped member the 1st position, FIG.3 (B) shows the state which made the rod-shaped member the 2nd position, respectively. It is shown. その他の実施形態に係る締結工具の全体構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the whole structure of the fastening tool which concerns on other embodiment.

10 締結工具
20 本体部
31b 角状内壁部
33 凹部
40 棒状部材
41 角状本体部(角状外壁部)
50 スプリング(付勢部材)
61 操作部材
10 Fastening tool
20 Main unit
31b Square inner wall
33 recess
40 Bar-shaped member
41 Square body (square outer wall)
50 Spring (biasing member)
61 Operation parts

Claims (3)

出力軸に回転駆動されると共に先端に第1の締結具が内嵌する凹部が形成される筒状の本体部と、
上記本体部に内挿されると共に先端に第2の締結具の嵌合穴に係合する係合部が形成される棒状部材とを備え、
上記棒状部材は、上記本体部の凹部の先端から上記係合部が外方に突出する第1位置と、該本体部の凹部の底部よりも内方へ陥没する第2位置との間を該本体部の軸方向に変位自在に構成され、且つ上記本体部と一体的に回転するように構成され
上記本体部の内部には、上記棒状部材の基端側に収容されるとともに、該棒状部材が上記第1位置となるように伸張し、且つ上記第2位置の棒状部材に押し付けられて収縮するスプリングが設けられていることを特徴とする締結工具。
A cylindrical main body portion that is rotationally driven by the output shaft and has a recessed portion in which the first fastener is fitted at the tip;
A rod-shaped member that is inserted into the main body and has an engaging portion that engages with the fitting hole of the second fastener at the tip;
Said rod member, said and a second position which recessed from the tip of the recess of the body portion between a first position in which the engagement portion protrudes outward, inward than the bottom of the recess of the body portion It is configured to be displaceable in the axial direction of the main body, and is configured to rotate integrally with the main body ,
The main body is accommodated in the base end side of the rod-shaped member, and the rod-shaped member extends to the first position, and is pressed against the rod-shaped member at the second position to contract. A fastening tool comprising a spring .
請求項1において、
上記本体部の内周側には、軸直角断面が多角形状となる角状内壁部が形成され、
上記棒状部材の外周側には、軸直角断面が多角形状となって上記本体部の角状内壁部に嵌合する角状外壁部が形成されていることを特徴とする締結工具。
Oite to claim 1,
On the inner peripheral side of the main body, a rectangular inner wall portion having a polygonal cross section perpendicular to the axis is formed.
A fastening tool, characterized in that a rectangular outer wall portion that fits into a rectangular inner wall portion of the main body portion is formed on the outer peripheral side of the rod-like member so that a cross section perpendicular to the axis is a polygonal shape.
請求項1又は2において、
上記本体部の外周側には、上記第1位置の棒状部材を保持する第1操作位置と、該棒状部材の保持を解除する第2操作位置とに変位自在な操作部材が設けられていることを特徴とする締結工具。
In claim 1 or 2 ,
On the outer peripheral side of the main body, an operation member is provided that is displaceable between a first operation position for holding the rod-shaped member at the first position and a second operation position for releasing the holding of the rod-shaped member. Fastening tool characterized by
JP2008293638A 2008-11-17 2008-11-17 Fastening tool Expired - Fee Related JP5379452B2 (en)

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