JP2010280040A - Driving tool - Google Patents

Driving tool Download PDF

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JP2010280040A
JP2010280040A JP2009135803A JP2009135803A JP2010280040A JP 2010280040 A JP2010280040 A JP 2010280040A JP 2009135803 A JP2009135803 A JP 2009135803A JP 2009135803 A JP2009135803 A JP 2009135803A JP 2010280040 A JP2010280040 A JP 2010280040A
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Prior art keywords
driving tool
guide
driving
guide member
driver
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JP5340812B2 (en
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Junichi Iwagami
潤一 岩上
Yukiisa Komiya
行功 小宮
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Makita Corp
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Makita Corp
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Priority to CN 201010197124 priority patent/CN101905455A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving tool especially further enhancing impact-resistance of a support part required for a guide member although the driving tool in which even a thin nail having a small head part is straightly hammered from a center of an injection port is provided by arranging the guide member for restricting a position or inclination of the driving tool near the injection port in the driving tool such as a nailing machine. <P>SOLUTION: Shock-absorbing members 12, 12 are interposed on a periphery of a turning support shaft 11 for turning/supporting the guide member 10 to a driver guide 4, and impact when the nail n collides by the shock absorbing members 12, 12 is absorbed. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

この発明は、使用者が手に持って用いる例えば圧縮エア駆動式の釘打ち機等の打ち込み工具に関する。   The present invention relates to a driving tool such as a compressed air driven nail driver used by a user.

例えば、圧縮エア駆動式の打ち込み工具は、圧縮エアにより往復動するピストンを内装した本体部と、本体部の下部に突き出す状態に設けられて、ピストンに取り付けた打ち込み具打撃用のドライバが挿通される打ち込み通路を有するドライバガイドと、本体部の側部から側方へ延びるハンドル部と、打ち込み通路内に1本ずつ供給される多数本の打ち込み具を装填できるマガジンを備えている。
ハンドル部の基部付近に設けたトリガ形式のスイッチレバーを指先で引き操作すると、本体部のシリンダ上室に圧縮エアが供給されてピストンが下動する。ピストンが圧縮エアの推力によって下動すると、ドライバが打ち込み通路内を下動し、その下動途中で1本の打ち込み具が打撃されて射出口から打ち出される。
この種の打ち込み工具では、打ち込み具の長さや太さ(頭部の大きさ)について通常複数種類のものに対応している。一方、打ち込み具が打撃されて下動する打ち込み通路の径(太さ)は固定されている。このため、太い打ち込み具にも対応した打ち込み通路内において細い打ち込み具の先端位置がばらつきやすくなる。特に、短い打ち込み具ほど打ち込み通路内で傾き易く、場合によってはドライバの先端に対して打ち込み具の頭部が位置ずれすることにより正しい姿勢で打撃されず、その結果打ち込み不良の原因になる場合があった。
従来、打ち込み具の射出位置及び射出姿勢を安定化させるために射出口に案内部材を設ける技術が公知になっている。従来の案内部材に関する技術が下記の特許文献に開示されている。これら従来の案内部材は、射出口において回動可能に支持され、かつ回動先端側を打ち込み通路内に進入させて打ち込み通路幅を狭める方向にばね付勢された構成となっている。係る案内部材によれば、打撃されて射出口から打ち出される直前において打ち込み具の先端あるいは頭部が当接してその位置若しくは姿勢(傾き)が規制されることにより、細い打ち込み具あるいは短い打ち込み具であっても安定した位置及び姿勢で打ち出される。
For example, a compressed air drive type driving tool is provided in a state in which a piston that reciprocates by compressed air is internally provided and protrudes to a lower portion of the body, and a driver for hitting a driving tool attached to the piston is inserted therethrough. A driver guide having a driving path, a handle portion extending from the side of the main body to the side, and a magazine capable of loading a large number of driving tools supplied one by one into the driving path.
When a trigger-type switch lever provided near the base of the handle is pulled with a fingertip, compressed air is supplied to the cylinder upper chamber of the main body and the piston moves downward. When the piston is moved down by the thrust of the compressed air, the driver is moved down in the driving passage, and a single driving tool is hit and driven out from the injection port during the downward movement.
In this type of driving tool, the length and thickness (size of the head) of the driving tool usually corresponds to a plurality of types. On the other hand, the diameter (thickness) of the driving path in which the driving tool is moved down by being hit is fixed. For this reason, the tip position of the thin driving tool is likely to vary in the driving path corresponding to the thick driving tool. In particular, the shorter the driving tool, the easier it is to tilt in the driving path. In some cases, the head of the driving tool is displaced with respect to the tip of the driver, so that it is not hit in the correct posture, resulting in a driving failure. there were.
Conventionally, a technique for providing a guide member at an injection port in order to stabilize an injection position and an injection posture of a driving tool has been known. Techniques related to conventional guide members are disclosed in the following patent documents. These conventional guide members are rotatably supported at the injection port, and are configured to be spring-biased in a direction in which the rotation tip side enters the driving passage to narrow the driving passage width. According to such a guide member, the tip or the head of the driving tool abuts immediately before being struck and driven out from the injection port, and the position or posture (tilt) of the driving tool is regulated, so that a thin driving tool or a short driving tool can be used. Even if it exists, it is launched in a stable position and posture.

実開平4−54679号公報Japanese Utility Model Publication No. 4-54679 特開平6−339874号公報JP-A-6-339874 特開2004−330366公報JP 2004-330366 A

しかしながら、従来の案内部材についてもさらに改良を加えるべき問題があった。案内部材は、ドライバで打撃されて下動する打ち込み具が大きな衝撃で衝突するため、その特に回動支持部に大きな衝撃が繰り返し付加される。従来、この回動支持部についての耐衝撃性に付いて特に考慮されておらず、この点で当該案内部材の耐久性を高める必要があった。また、通常の打ち込み動作に限らず、例えば打ち込み通路内で打ち込み具が詰まる現象(いわゆるジャミング)が発生した場合には特に回動支軸に対して通常とは異なる方向から大きな衝撃が付加されるため、この場合の耐衝撃性を高める必要があった。
そこで、本発明は、打ち出される打ち込み具の位置及び打ち出し姿勢を規制する案内部材の耐久性を高めることを目的とする。
However, the conventional guide member has a problem to be further improved. In the guide member, since the driving tool that is struck by the driver and collides with it with a large impact, a particularly large impact is repeatedly applied to the rotation support portion. Conventionally, no particular consideration has been given to the impact resistance of the rotating support portion, and it has been necessary to increase the durability of the guide member in this respect. Further, not only a normal driving operation, but, for example, when a phenomenon that the driving tool is clogged in the driving path (so-called jamming) occurs, a large impact is applied to the rotating support shaft from a direction different from the normal direction. Therefore, it was necessary to improve the impact resistance in this case.
Accordingly, an object of the present invention is to improve the durability of a guide member that regulates the position and launching posture of a driving tool to be driven out.

このため、本発明は、特許請求の範囲の各請求項に記載した構成の打ち込み工具とした。
請求項1記載の打ち込み工具によれば、打ち込み通路内の下動途中において打ち込み具が案内部材に当接して主としてその先端位置及び打ち出し姿勢(傾き)が規制される。案内部材には打ち込み具が当接する際の衝撃が付加される。これに対して、案内部材を回動支持する回動支軸の周囲には衝撃吸収用の緩衝部材が介在されており、これにより当該案内部材の耐衝撃性が高められている。このことから、打ち込み動作のたびに繰り返し案内部材に付加される衝撃に対して当該案内部材の耐久性を高めることができる。
緩衝部材としては、例えば円環形状のゴムリング、ウレタンスリーブ等の弾性体を用いることができる。
請求項2記載の打ち込み工具によれば、案内部材は、先端が射出口となる打ち込み通路を有する筒型のドライバガイドに回動支軸を介して回動支持されている。このため、案内部材と回動支軸との間、又は回動支軸とドライバガイドとの間、又はその双方に緩衝部材を介在させることにより、案内部材に付加された衝撃が吸収される。
請求項3記載の打ち込み工具によれば、円環形状の緩衝部材を用いることにより、その軸線に対してあらゆる方向から付加される衝撃を吸収することができるので、耐衝撃性を一層高めることができる。特に円環形状の緩衝部材によれば、いわゆるジャミング発生時の衝撃に対して高い耐衝撃性を発揮させることができる。
請求項4記載の打ち込み工具によれば、案内部材のドライバガイド軸線回りの位置について、ハンドル部を把持した通常の把持姿勢において使用者の手前側に回動支持されている。このため、手前側とは反対側(当該打ち込み工具の背面側)あるいは左右側部に配置した構成に比して使用者が打ち込み部位を目視する際の邪魔になることがなく、当該打ち込み部位の視認性を確保することができる。
請求項5記載の打ち込み工具によれば、簡易かつ安価な構成で案内部材を打ち込み通路側に付勢することができる。
請求項6記載の打ち込み工具によれば、打ち込み具の主として先端位置及び傾き(打ち込み姿勢)についてあらゆる方向の位置及び傾きを規制して、当該打ち込み通路の中心に案内する求心機能を持たせることができるので、当該案内部材の案内機能を一層高めることができる。
For this reason, this invention was set as the driving tool of the structure described in each claim of a claim.
According to the driving tool of the first aspect, the driving tool is brought into contact with the guide member in the middle of the downward movement in the driving path, and its tip position and driving posture (tilt) are mainly regulated. The guide member is subjected to an impact when the driving tool abuts. On the other hand, a shock absorbing shock absorbing member is interposed around a rotation support shaft that supports the rotation of the guide member, thereby improving the shock resistance of the guide member. From this, durability of the said guide member can be improved with respect to the impact repeatedly added to a guide member for every driving operation.
As the buffer member, for example, an elastic body such as an annular rubber ring or a urethane sleeve can be used.
According to the driving tool of the second aspect, the guide member is rotatably supported by the cylindrical driver guide having a driving passage whose tip is an injection port via the rotation support shaft. For this reason, the shock added to the guide member is absorbed by interposing the buffer member between the guide member and the rotation support shaft, between the rotation support shaft and the driver guide, or both.
According to the driving tool of the third aspect, by using the ring-shaped buffer member, it is possible to absorb the impact applied from any direction with respect to the axis line, so that the impact resistance can be further improved. it can. In particular, according to the ring-shaped buffer member, it is possible to exhibit high impact resistance against the impact when so-called jamming occurs.
According to the driving tool of the fourth aspect, the position of the guide member around the driver guide axis is pivotally supported on the front side of the user in a normal gripping posture in which the handle portion is gripped. For this reason, compared with the structure arrange | positioned on the opposite side (the back side of the said driving tool) or the right-and-left side part on the near side, it does not become a hindrance when a user looks at a driving | running site | part. Visibility can be ensured.
According to the driving tool of the fifth aspect, the guide member can be urged toward the driving path with a simple and inexpensive configuration.
According to the driving tool of the sixth aspect, it is possible to provide a centripetal function for restricting the position and the inclination in all directions with respect to the tip position and the inclination (driving posture) mainly of the driving tool and guiding it to the center of the driving path. Therefore, the guide function of the guide member can be further enhanced.

本発明の実施形態に係る打ち込み工具の全体側面図である。1 is an overall side view of a driving tool according to an embodiment of the present invention. 図1の(II)部拡大図であって、射出口付近の拡大図である。It is the (II) part enlarged view of FIG. 1, Comprising: It is an enlarged view of injection port vicinity. 図2の(III)-(III)線断面図であって、案内部材及びその周辺の断面図である。FIG. 3 is a cross-sectional view taken along the line (III)-(III) of FIG. 案内部材及びその周辺を図3中矢印(IV)方向から見た側面図である。It is the side view which looked at the guide member and its periphery from the arrow (IV) direction in FIG.

次に、本発明の実施形態を図1〜図4に基づいて説明する。図1は、本実施形態に係る打ち込み工具1の全体を示している。本実施形態の打ち込み工具1は、打ち込み具nを射出口付近で案内するための案内部材10について特徴を有するもので、その他打ち込み工具としての基本的な構成については特に変更を要しないので詳細な説明は省略する。なお、この明細書では、部材若しくは構成の上下方向について、打ち込み具nの打ち込み方向(図1において下側)を下側とし、その反対方向を上側とする。
この打ち込み工具1は、圧縮エア駆動式の釘打ち機で、ピストン7を内装した本体部2と、本体部2の側部から側方へ長く延びるハンドル部3と、本体部2の下部から下方へ突き出す状態に設けられた筒形のドライバガイド4と、ハンドル部3とドライバガイド4との間に掛け渡し状態で取り付けられたマガジン5を備えている。
ピストン7の下面側に打撃用のドライバ8が取り付けられている。ドライバ8は細長い棒状の部材で、ピストン7の下面中心から下方へ長く延びている。ドライバ8の先端部は、ドライバガイド4の打ち込み通路4a内に進入している。
Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the entire driving tool 1 according to the present embodiment. The driving tool 1 of the present embodiment is characterized by the guide member 10 for guiding the driving tool n in the vicinity of the injection port, and the basic configuration as the other driving tool is not particularly required to be changed. Description is omitted. In this specification, in the vertical direction of the member or configuration, the driving direction of the driving tool n (lower side in FIG. 1) is the lower side, and the opposite direction is the upper side.
The driving tool 1 is a compressed air driven nailing machine, and includes a main body 2 with a piston 7 therein, a handle 3 that extends from the side of the main body 2 to the side, and a lower portion of the main body 2 downward. A cylindrical driver guide 4 provided in a protruding state, and a magazine 5 attached between the handle portion 3 and the driver guide 4 in a spanned state.
An impact driver 8 is attached to the lower surface side of the piston 7. The driver 8 is an elongated rod-like member and extends downward from the center of the lower surface of the piston 7 downward. The tip of the driver 8 enters the driving path 4 a of the driver guide 4.

ハンドル部3の先端に、駆動源としての圧縮エア供給用のエアホースが接続される。図では、エアホース接続用のプラグ3aのみが示されている。ハンドル部3の基部付近には、使用者が指先で引き操作するトリガ形式のスイッチレバー6が配置されている。このスイッチレバー6の引き操作により本体部2に圧縮エアが供給される。本体部2に圧縮エアが供給されると、ピストン7が下動してドライバ8が打ち込み通路4a内を下動し、その下動途中で打ち込み具nの頭部が当該ドライバ8で打撃される。打撃された打ち込み具nは、ドライバガイド4の下端の射出口4bから打ち出される。打ち出された打ち込み具nは、打ち込み材Wに打ち込まれる。
ドライバガイド4には、コンタクトレバー9が併設されている。このコンタクトレバー9は、ドライバガイド4に沿って上下に変位可能に支持されている。このコンタクトレバー9の上部は、スイッチレバー6付近に至っている。また、このコンタクトレバー9は射出口4bから僅かに突き出した状態に付勢されている。コンタクトレバー9を打ち込み材Wに当接させて当該打ち込み工具1を押し付けると、このコンタクトレバー9がドライバガイド4に対して相対的に上動し、これによりスイッチレバー6の引き操作が有効になる。コンタクトレバー9を打ち込み材Wに押し付けて相対的に上動させた状態でないと、スイッチレバー6の引き操作は無効になって、本体部2での不用意な打ち込み動作が未然に防止されるようになっている。
ドライバガイド4の打ち込み通路4a内には、本体部2の打ち込み動作に連動して打ち込み具nが1本ずつ供給される。マガジン5には、多数の打ち込み具n〜nが並列に連結された連結打ち込み具が巻回状態で装填されている。連結打ち込み具の先端側が本体部2の打ち込み動作に連動してピッチ送りされることにより、打ち込み具nが1本ずつ打ち込み通路4a内に供給される。図では、打ち込み通路4a内に供給された打ち込み具nのみが示されて連結打ち込み具は省略されている。
An air hose for supplying compressed air as a drive source is connected to the tip of the handle portion 3. In the figure, only the plug 3a for connecting the air hose is shown. A trigger type switch lever 6 that is pulled by a user with a fingertip is disposed near the base of the handle portion 3. The pulling operation of the switch lever 6 supplies compressed air to the main body 2. When the compressed air is supplied to the main body 2, the piston 7 moves down and the driver 8 moves down in the driving passage 4 a, and the head of the driving tool n is hit by the driver 8 during the downward movement. . The hit driving tool n is driven out from the injection port 4 b at the lower end of the driver guide 4. The driven tool n is driven into the driving material W.
The driver guide 4 is provided with a contact lever 9. The contact lever 9 is supported along the driver guide 4 so as to be vertically displaceable. The upper part of the contact lever 9 reaches the vicinity of the switch lever 6. Further, the contact lever 9 is biased so as to slightly protrude from the injection port 4b. When the contact lever 9 is brought into contact with the driving material W and the driving tool 1 is pressed, the contact lever 9 moves up relative to the driver guide 4, thereby enabling the pulling operation of the switch lever 6. . If the contact lever 9 is not pressed against the driving material W and moved up relatively, the pulling operation of the switch lever 6 becomes invalid and an inadvertent driving operation in the main body 2 is prevented in advance. It has become.
A driving tool n is supplied into the driving passage 4 a of the driver guide 4 one by one in conjunction with the driving operation of the main body 2. The magazine 5 is loaded with a connected driving tool in which a number of driving tools n to n are connected in parallel in a wound state. When the distal end side of the connecting driving tool is pitch-fed in conjunction with the driving operation of the main body portion 2, the driving tools n are supplied one by one into the driving passage 4a. In the figure, only the driving tool n supplied into the driving passage 4a is shown, and the connecting driving tool is omitted.

ドライバガイド4の射出口4b付近には、案内部材10が回動支軸11を介して図1において左右方向に回動可能に支持されている。なお、以下の説明では、便宜上図1において左側を前側と言い、右側を後ろ側とも言う。従って、ハンドル部3を把持した使用者は、当該打ち込み工具1の後ろ側(図1において右側)に位置することとなる。
この案内部材10は、ドライバガイド4の射出口4b付近であって、当該射出口4bの周囲の位置ついては後部側に支持されている。この案内部材10の詳細が図2に示されている。この案内部材10は、下側の案内部10aと上側の支持部10bを備えている。案内部10aには、打ち込み通路4aの中心軸線J回りに湾曲する円弧形状の案内面10cが設けられている。本実施形態の場合、この案内面10cが射出口4bの一部を構成している。支持部10bは、案内部10aの上部から相互に平行に延びる二股形状を有している。ドライバガイド4の後ろ側の側部(図2において右側部)には、支持台座部4cが設けられている。図3に示すようにこの支持台座部4cを両支持部10b,10b間に挟んで当該案内部材10が回動支軸11を介して結合されている。回動支軸11は、両支持部10b,10bの支持孔10d,10dと支持台座部4cの支持孔4dを貫通している。
両支持部10b,10bの支持孔10d,10dには、それぞれ円環形状の緩衝部材12が装着されている。この両緩衝部材12,12の内周側に回動支軸11が挿通されている。この緩衝部材12,12は、弾性体(例えばウレタンゴム等)を素材として成形されており、適度な弾性(クッション性)を有している。この緩衝部材12,12を介して案内部材10が支持されているため、当該案内部材10には打ち込み具nに対する衝撃緩衝機能が持たせられている。
回動支軸11には、フランジ部11aと小径部11bが設けられており、小径部11bには抜け止め用の止め輪13が装着されている。フランジ部11aと一方の支持部10bとの間、及び止め輪13と他方の支持部10bとの間にはそれぞれ座金14,14が介装されて、両緩衝部材12,12の抜け出しが防止されている。
A guide member 10 is supported in the vicinity of the injection port 4 b of the driver guide 4 so as to be rotatable in the left-right direction in FIG. In the following description, for convenience, the left side in FIG. 1 is referred to as the front side, and the right side is also referred to as the rear side. Therefore, the user holding the handle portion 3 is located on the rear side (right side in FIG. 1) of the driving tool 1.
The guide member 10 is supported in the vicinity of the injection port 4b of the driver guide 4 and on the rear side with respect to the position around the injection port 4b. Details of the guide member 10 are shown in FIG. The guide member 10 includes a lower guide portion 10a and an upper support portion 10b. The guide portion 10a is provided with an arcuate guide surface 10c that is curved around the central axis J of the driving passage 4a. In the case of this embodiment, this guide surface 10c constitutes a part of the injection port 4b. The support part 10b has a bifurcated shape extending in parallel with each other from the upper part of the guide part 10a. A support pedestal 4c is provided on the side of the driver guide 4 on the rear side (the right side in FIG. 2). As shown in FIG. 3, the guide member 10 is coupled via the rotation support shaft 11 with the support base portion 4 c sandwiched between the support portions 10 b and 10 b. The rotation support shaft 11 passes through the support holes 10d and 10d of both the support portions 10b and 10b and the support hole 4d of the support base portion 4c.
An annular buffer member 12 is mounted in each of the support holes 10d and 10d of the support portions 10b and 10b. A rotating support shaft 11 is inserted through the inner peripheral sides of the buffer members 12 and 12. The buffer members 12 and 12 are molded using an elastic body (for example, urethane rubber) as a material, and have appropriate elasticity (cushioning property). Since the guide member 10 is supported via the buffer members 12, 12, the guide member 10 has an impact buffer function for the driving tool n.
The rotation support shaft 11 is provided with a flange portion 11a and a small diameter portion 11b, and a retaining ring 13 for preventing the removal is attached to the small diameter portion 11b. Washers 14 and 14 are interposed between the flange portion 11a and the one support portion 10b, and between the retaining ring 13 and the other support portion 10b, respectively, thereby preventing the buffer members 12 and 12 from coming out. ing.

案内部材10は、圧縮ばね15によってその案内面10cを打ち込み通路4a内に進入させる方向に付勢されている。図4に示すように案内部材10の上部であって、支軸11より上部には付勢台座部10eが上方へ張り出す状態に設けられている。この付勢台座部10eと、ドライバガイド4の側部との間に圧縮ばね15が介装されている。この圧縮ばね15の付勢力により、案内部材10は案内面10cを常時打ち込み通路4a内に位置させた状態に保持される。図2に示すように案内面10cは、その下端部側ほど打ち込み通路4aを狭める方向に僅かに傾斜した位置に保持される。
案内部材10の案内面10cは、打ち込み通路4aの中心軸線J回りに湾曲する円弧面に形成されている。このため、この案内面10cに、打ち込み通路4aを下動する打ち込み具nの先端若しくは頭部が摺接されると、当該打ち込み具nの先端若しくは頭部が打ち込み通路4aの中心側に案内される(求心作用)。打ち込み具nの先端若しくは頭部が案内部材10の案内面10cによって中心側に案内されることにより、当該打ち込み具nの先端及び頭部の位置が打ち込み通路4aの中心側に規制されて当該打ち込み具nの打ち出し姿勢が打ち込み方向に対して真っ直ぐに規制される。
案内部材10の案内面10cは、打ち込み具nの長さや太さに係わらずその案内機能を発揮する。打ち込み具nが太い結果その頭部がより大径である場合には、案内部材10は当該頭部に押されてその下端側(回動先端側)を打ち込み通路4a内から退出させる方向(図2において白抜きの矢印で示す反時計回り方向)に傾動する。この傾動動作は、圧縮ばね15の付勢力に抗して支軸11を中心にしてなされる。
The guide member 10 is urged by the compression spring 15 in a direction in which the guide surface 10c is driven into the passage 4a. As shown in FIG. 4, an urging pedestal 10 e is provided above the guide member 10 and above the support shaft 11 so as to protrude upward. A compression spring 15 is interposed between the biasing pedestal portion 10 e and the side portion of the driver guide 4. Due to the urging force of the compression spring 15, the guide member 10 is held in a state where the guide surface 10c is always driven and positioned in the passage 4a. As shown in FIG. 2, the guide surface 10c is held at a position slightly inclined in the direction of narrowing the driving passage 4a toward the lower end portion thereof.
The guide surface 10c of the guide member 10 is formed in an arcuate surface that curves around the central axis J of the driving path 4a. For this reason, when the tip or head of the driving tool n moving down the driving path 4a is brought into sliding contact with the guide surface 10c, the tip or head of the driving tool n is guided to the center side of the driving path 4a. (Centripetal action). The tip or head of the driving tool n is guided to the center side by the guide surface 10c of the guide member 10, whereby the tip and head positions of the driving tool n are regulated to the center side of the driving path 4a. The launching posture of the tool n is regulated straight with respect to the driving direction.
The guide surface 10c of the guide member 10 exhibits its guide function regardless of the length and thickness of the driving tool n. When the head is larger in diameter as a result of the driving tool n being thicker, the guide member 10 is pushed by the head and the lower end side (rotating tip side) is retracted from the driving passage 4a (see FIG. 2 in a counterclockwise direction indicated by a hollow arrow). This tilting operation is performed around the support shaft 11 against the urging force of the compression spring 15.

以上のように構成した本実施形態の打ち込み工具1によれば、打ち込み具nを案内する案内部材10が打ち込み方向上側の回動支軸11を介して回動可能、かつ圧縮ばね15の付勢力によってその回動先端側を打ち込み通路4a内に進入させる方向(前側)に付勢して設けられている。この案内部材10の案内面10cに打ち込み具nの先端及び頭部を摺接させることにより当該打ち込み具nが打ち込み通路4aの中心側に位置規制されて射出口4bから真っ直ぐに打ち出される。
しかも、本実施形態の案内部材10は緩衝部材12,12を介してドライバガイド4に支持されている。このため、ドライバ8で打撃されて打ち込み通路4a内を下動する打ち込み具nが案内面10cに衝突して大きな衝撃が付加されると、この衝撃が緩衝部材12,12で吸収される。本体部2の打ち込み動作毎に繰り返される打ち込み具nの案内時の衝撃が緩衝部材12,12で吸収されるので、回動支軸11の変形あるいは支持孔4d,10dのへたり等を低減して当該案内部材10のドライバガイド4に対する支持状態の耐衝撃性を高めることができる。
また、案内部材10の案内面10cが打ち込み通路4aの中心軸線J回りに湾曲する円弧面に形成されて当該案内面10cに求心機能が持たせられているので、打ち込み具nを打ち込み通路4aの中心側に案内しやすくなり(求心作用)、これにより一層確実な打ち込みを行うことができるようになる。
さらに、回動支軸11の周囲に円環形状の緩衝部材12,12が装着されていることにより、あるいは案内面10cが円弧面に形成されていることにより、打ち込み通路4aの中心軸線J回りのあらゆる方向から打ち込み具nを介して付加される衝撃に対して緩衝機能を発揮させることができる。
また、案内部材10は、ドライバガイド4の後ろ側であって使用者から見て手前側に配置されている。通常、使用者は打ち込み作業では、ドライバガイド4の前側から射出口4b付近を覗き込んで打ち込み位置の確認をする。この点で、本実施形態の案内部材10がドライバガイド4の手前側に配置されているので、使用者が打ち込み位置を覗き込む際の邪魔にならず、その良好な視認性を阻害することがない。
According to the driving tool 1 of the present embodiment configured as described above, the guide member 10 for guiding the driving tool n can be rotated via the rotation support shaft 11 on the upper side in the driving direction, and the biasing force of the compression spring 15 can be obtained. Therefore, the rotation tip side is urged in a direction (front side) to be driven into the driving passage 4a. When the leading end and the head of the driving tool n are brought into sliding contact with the guide surface 10c of the guide member 10, the driving tool n is positioned on the center side of the driving path 4a and is driven straight out from the injection port 4b.
In addition, the guide member 10 of the present embodiment is supported by the driver guide 4 via the buffer members 12 and 12. For this reason, when the driving tool n that is struck by the driver 8 and moves downward in the driving passage 4a collides with the guide surface 10c and a large shock is applied, the shock is absorbed by the buffer members 12 and 12. Since the shock at the time of guiding the driving tool n repeated every driving operation of the main body 2 is absorbed by the buffer members 12, 12, deformation of the rotating support shaft 11 or sag of the support holes 4d, 10d is reduced. Thus, the impact resistance of the guide member 10 with respect to the driver guide 4 can be improved.
Further, since the guide surface 10c of the guide member 10 is formed in an arc surface curved around the center axis J of the driving passage 4a and the guide surface 10c has a centripetal function, the driving tool n is inserted into the driving passage 4a. It becomes easy to guide to the center side (centripetal action), which makes it possible to perform driving more reliably.
Further, the annular buffer members 12 and 12 are mounted around the rotation support shaft 11, or the guide surface 10c is formed in an arcuate surface. It is possible to exert a buffering function against an impact applied through the driving tool n from any direction.
The guide member 10 is disposed behind the driver guide 4 and on the front side as viewed from the user. Usually, in the driving operation, the user looks into the vicinity of the injection port 4b from the front side of the driver guide 4 and confirms the driving position. In this respect, since the guide member 10 of the present embodiment is disposed on the front side of the driver guide 4, it does not hinder the user from looking into the driving position and hinders good visibility. Absent.

以上説明した実施形態には、種々変更を加えることができる。例えば、案内部材10側の支持孔10d,10dと回動支軸11との間に緩衝部材12,12を介装する構成を例示したが、これに代えて若しくはこれに加えて支持台座部4cの支持孔4dと回動支軸11との間に同じく円環形状の緩衝部材を介装する構成としてもよい。
また、例示した構成では、案内部材10を打ち込み通路4aの先端であってその案内面10cが射出口4bの一部を形成する構成で例示したが、これよりも上方位置に案内部材を配置して、射出口の全周をドライバガイド4で形成する構成としてもよい。
さらに、案内部材10の案内面10cを円弧形状に湾曲させた構成を例示したが、平坦な案内面に変更してもよい。
また、ドライバガイド4の後ろ側に案内部材10を配置する構成を例示したが、前側に配置してもよく、あるいは左右側部に配置してもよく、さらに前後一対あるいは左右一対の案内部材を配置してもよい。
Various modifications can be made to the embodiment described above. For example, the configuration in which the buffer members 12 and 12 are interposed between the support holes 10d and 10d on the guide member 10 side and the rotation support shaft 11 is illustrated, but instead of or in addition to this, the support base portion 4c. Similarly, an annular buffer member may be interposed between the support hole 4 d and the rotation support shaft 11.
In the illustrated configuration, the guide member 10 is illustrated as a configuration in which the guide surface 10c forms a part of the injection port 4b at the tip of the driving passage 4a. However, the guide member is disposed at a position higher than this. Thus, the entire periphery of the injection port may be formed by the driver guide 4.
Furthermore, although the structure which curved the guide surface 10c of the guide member 10 in circular arc shape was illustrated, you may change into a flat guide surface.
Moreover, although the structure which arrange | positions the guide member 10 to the back side of the driver guide 4 was illustrated, you may arrange | position to a front side or may arrange | position to a left-right side part, and also a pair of front and rear or a pair of left and right guide members You may arrange.

1…打ち込み工具(圧縮エア式釘打ち機)
2…本体部
3…ハンドル部、3a…ホース接続プラグ
4…ドライバガイド
4a…打ち込み通路、4b…射出口、4c…支持台座部、4d…支持孔
5…マガジン
6…スイッチレバー
7…ピストン
8…ドライバ
9…コンタクトレバー
10…案内部材
10a…案内部、10b…支持部、10c…案内面(円弧形状の湾曲面)
10d…支持孔、10e…付勢台座部
11…回動支軸、11a…フランジ部、11b…小径部
12…緩衝部材
13…止め輪
14…座金
15…圧縮ばね
n…打ち込み具
W…打ち込み材
J…打ち込み通路の中心軸線
1 ... Driving tool (Compressed air nailing machine)
DESCRIPTION OF SYMBOLS 2 ... Main-body part 3 ... Handle part, 3a ... Hose connection plug 4 ... Driver guide 4a ... Driving path, 4b ... Injection port, 4c ... Support base part, 4d ... Support hole 5 ... Magazine 6 ... Switch lever 7 ... Piston 8 ... Driver 9 ... Contact lever 10 ... Guide member 10a ... Guide part, 10b ... Support part, 10c ... Guide surface (arc-shaped curved surface)
10d: support hole, 10e: biasing pedestal part 11: rotating support shaft, 11a ... flange part, 11b ... small diameter part 12 ... buffer member 13 ... retaining ring 14 ... washer 15 ... compression spring n ... driving tool W ... driving material J ... Center axis of driving path

Claims (6)

ドライバガイドの打ち込み通路内に供給された打ち込み具の頭部をドライバで打撃して前記打ち込み通路内を下動させて射出口から打ち出す打ち込み工具であって、前記ドライバガイドに前記打ち込み具を案内する案内部材が設けられており、該案内部材は、打ち込み方向上側の回動支軸を介して前記ドライバガイドに回動可能、かつ回動先端側を前記打ち込み通路内に進入させる方向に付勢して設けられており、前記回動支軸の周囲に衝撃吸収用の緩衝部材を介在させた打ち込み工具。 A driving tool that strikes a head of a driving tool supplied in a driving path of a driver guide with a driver and moves the driving tool downward in the driving path to drive the driving tool from the injection port. The driving tool guides the driving tool to the driver guide. A guide member is provided, and the guide member can be rotated to the driver guide via a rotation support shaft on the upper side in the driving direction, and urged in a direction to allow the rotation tip side to enter the driving path. A driving tool provided with a shock absorbing buffer member around the rotating support shaft. 請求項1記載の打ち込み工具であって、前記案内部材と前記回動支軸との間及び/又は前記回動支軸と前記ドライバガイドとの間に、前記緩衝部材を介在させた打ち込み工具。 The driving tool according to claim 1, wherein the buffer member is interposed between the guide member and the rotation support shaft and / or between the rotation support shaft and the driver guide. 請求項1又は2記載の打ち込み工具であって、円環形状の緩衝部材を前記回動支軸に装着した打ち込み工具。 The driving tool according to claim 1 or 2, wherein an annular buffer member is mounted on the rotating support shaft. 請求項1〜3のいずれか1項に記載した打ち込み工具であって、工具本体部の下部に前記ドライバガイドを備え、該工具本体の側部にハンドル部を備え、該ハンドル部と前記ドライバガイドとの間に打ち込み具を収容するマガジンを備え、前記案内部材を前記ドライバガイドの周囲の位置について前記マガジン側に設けた打ち込み工具。 The driving tool according to any one of claims 1 to 3, wherein the driver guide is provided at a lower portion of a tool main body portion, a handle portion is provided at a side portion of the tool main body, the handle portion and the driver guide. A driving tool provided with a magazine for storing a driving tool between the guide guide and the guide member provided on the magazine side at a position around the driver guide. 請求項1〜4のいずれか1項に記載した打ち込み工具であって、前記案内部材を圧縮ばねによりばね付勢した打ち込み工具。 The driving tool according to any one of claims 1 to 4, wherein the guide member is spring-biased by a compression spring. 請求項1〜5のいずれか1項に記載した打ち込み工具であって、前記案内部材の案内面が打ち込み具の周囲に沿って湾曲する円弧面に形成された打ち込み工具。
The driving tool according to any one of claims 1 to 5, wherein a guide surface of the guide member is formed on an arc surface curved along the periphery of the driving tool.
JP2009135803A 2009-06-05 2009-06-05 Driving tool Active JP5340812B2 (en)

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