JP4450390B2 - Tool holding device for impact tools. - Google Patents
Tool holding device for impact tools. Download PDFInfo
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- JP4450390B2 JP4450390B2 JP2005297065A JP2005297065A JP4450390B2 JP 4450390 B2 JP4450390 B2 JP 4450390B2 JP 2005297065 A JP2005297065 A JP 2005297065A JP 2005297065 A JP2005297065 A JP 2005297065A JP 4450390 B2 JP4450390 B2 JP 4450390B2
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Description
本発明は、先端工具に往復動による衝撃を与え、対象材料を破砕あるいは穿孔する打撃工具に設けられた先端工具の保持装置に関するものである。 The present invention relates to a holding device for a tip tool provided in a striking tool that gives impact by reciprocating motion to the tip tool and crushes or drills a target material.
打撃工具の先端工具は、磨耗が激しいこと、また、作業用途に応じて工具を選定する必要があること等から、取替え操作を頻繁に行うものである。このため、取替え操作を容易に行うことができる打撃工具用工具保持装置として、下記の特許文献１に開示のプッシュボタン式のものがある。これは工具保持部材であるツールリテーナが工具保持位置にあるとき、係止部材であるプッシュボタンの係止部がツールリテーナの回動を阻止すべく係合し、工具取替えの際にはプッシュボタンを押込むことで係止部をツールリテーナの回動軌跡上から離間させ、ツールリテーナが解除位置へと回動することを許容する構成のものである。 The tip tool of the striking tool is frequently subjected to replacement operation because it is heavily worn and it is necessary to select a tool according to the work application. For this reason, there is a push button type device disclosed in Patent Document 1 below as a tool holding device for an impact tool that can be easily replaced. This is because when the tool retainer, which is a tool holding member, is in the tool holding position, the locking portion of the push button, which is a locking member, engages to prevent rotation of the tool retainer, and when the tool is replaced, the push button By pushing in, the engaging part is separated from the turning locus of the tool retainer, and the tool retainer is allowed to turn to the release position.
一方、打撃工具による作業は、一般的に対象材料が石工材であり、作業によって発生する粉塵は非常に粒子の細かいものである。このため、打撃工具の各部隙間に侵入することを完全に防止することは非常に困難であり、打撃工具の故障原因の一つとなっている。特に工具保持装置は粉塵発生部位の近傍に配設されるため、長時間の作業によって多量の粉塵を被ることになり、その影響を受けやすいものである。 On the other hand, in the operation using the impact tool, the target material is generally a masonry material, and the dust generated by the operation is very fine. For this reason, it is very difficult to completely prevent entry into the gaps of each part of the impact tool, which is one cause of failure of the impact tool. In particular, since the tool holding device is disposed in the vicinity of the dust generation site, the tool holding device is subject to a large amount of dust and is easily affected by a long time operation.
上記特許文献１に開示の工具保持装置は、プッシュボタンがツールホルダに設けられた有底孔の内壁に案内されており、常態では有底孔内に設けられたバネの付勢力によってツールリテーナの回動を阻止するロック位置へと付勢されている。ツールリテーナを解除する際は、プッシュボタンを押込むことで係止部をツールリテーナの回動軌跡上から離反させ、回動の阻止状態を解除する構成となっている。また、この構成においてはプッシュボタンの傾きを抑制することで押込み動作を安定させるため、プッシュボタン外周とそれに対応する有底孔内壁との隙間をできるだけ小さくする必要が生じる。
以上のような構成においては、先端工具の取替え作業は容易に行うことができるものの、粉塵による影響を受けやすいという問題は依然として解決されていないものである。つまり、有底孔の上部にプッシュボタンが蓋となって覆った形態であることから、一旦侵入した粉塵は排出されることがなく、有底孔内部に徐々に蓄積され、遂にはプッシュボタンの動作不良を引き起こすのである。また、そのような状態になった場合、工具保持装置を分解しなければ粉塵を除去することができないという問題もある。さらに、前述した理由から、プッシュボタン外周と有底孔内壁との隙間をできるだけ小さくする構成のため、少量の粉塵が侵入しただけで両部材間の摺動抵抗となり、プッシュボタンの動作不良を引き起こす場合もある。
なお、プッシュボタンの動作不良とは具体的には、押込み動作ができなくなったり、一旦押込んだプッシュボタンが押込み力を解除しても初期位置（係止位置）に戻らなくなる等の現象のことである。
In the tool holding device disclosed in Patent Document 1, the push button is guided by the inner wall of the bottomed hole provided in the tool holder, and the tool retainer is normally urged by the biasing force of the spring provided in the bottomed hole. It is biased to a locked position that prevents rotation. When releasing the tool retainer, the pusher is pushed to separate the locking portion from the turning locus of the tool retainer, thereby releasing the rotation blocking state. Further, in this configuration, since the pushing operation is stabilized by suppressing the tilt of the push button, it is necessary to make the gap between the push button outer periphery and the corresponding inner wall of the bottomed hole as small as possible.
In the configuration as described above, although the replacement work of the tip tool can be easily performed, the problem of being easily affected by dust has not yet been solved. In other words, because the push button is covered with a cover on the top of the bottomed hole, dust that has once entered will not be discharged, but will gradually accumulate inside the bottomed hole. It causes malfunction. Moreover, when it will be in such a state, there also exists a problem that dust cannot be removed unless a tool holding device is disassembled. In addition, for the reasons described above, the gap between the outer periphery of the push button and the inner wall of the bottomed hole is made as small as possible. In some cases.
The malfunction of the push button is specifically a phenomenon that the push operation cannot be performed or the push button once pushed does not return to the initial position (locking position) even if the push force is released. It is.
そこで、請求項１及び２に記載の発明は、工具保持装置が粉塵の影響によって動作不良を起こすことを防止した打撃工具用工具保持装置を提供することを目的としたものである。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a tool holding device for an impact tool that prevents the tool holding device from malfunctioning due to the influence of dust.
上記目的を達成するために、請求項１に記載の発明は、工具保持装置の構成を、粉塵の溜まる部位が存在しない構成とし、また、係止部材の動作が粉塵の影響を受けないように、その動作を回動式とし、また、ツールリテーナの回動を許容する解除位置においては、係止面がツールリテーナ及びツールホルダの両部材から離間する構成としたことを特徴とするものである。
請求項２に記載の発明は、請求項１の目的に加え、係止部材がロック位置及び解除位置にある際、それぞれの位置で簡易の固定がなされるよう、係止部材に位置決め機構を設けたことを特徴とするものである。
In order to achieve the above object, according to the first aspect of the present invention, the configuration of the tool holding device is configured such that there is no portion where dust accumulates, and the operation of the locking member is not affected by dust. The operation is a rotation type, and the locking surface is separated from both the tool retainer and the tool holder at the release position that allows the rotation of the tool retainer. .
In addition to the object of claim 1, the invention described in claim 2 is provided with a positioning mechanism on the locking member so that when the locking member is in the lock position and the release position, simple fixing is performed at each position. It is characterized by that.
請求項１に記載の発明によれば、係止部材を回動式としたため、前記従来技術のように粉塵が溜まる有底孔は存在せず、また、回動動作は支点の軸着のみで安定するため、前記従来技術の摺動動作のように係止部材の動きを案内するための近接部材（前記従来技術における有底孔内壁）は不要となる。これらのことから、係止部材の動作に関して粉塵の堆積による影響を受けることが防止できる。また、係止部材の回動方向を先端工具の中心軸に平行な軸線周りとし、解除位置において、係止面がツールリテーナ及びツールホルダの両部材から離間する構成とした、つまり、打撃工具使用後の係止部材の操作は、ロック位置から解除位置へと動かすものであり、このときの係止部材の操作方向が、従来技術のように粉塵を押し付ける方向ではなく、粉塵を外部へ排出する方向となる。このことからも、粉塵の影響を受けることがなく、係止部材の動作不良を防止することが可能となる。
請求項２に記載の発明によれば、請求項１の発明に加え、係止部材をロック位置及び解除位置に位置決めするものであり、これによって、実動時の振動等により係止部材が解除位置へと動いてしまうことを防止でき、安定性が向上する。また、工具取替え時においては、その作業がしやすくなるものである。
According to the first aspect of the present invention, since the locking member is of a pivoting type, there is no bottomed hole in which dust accumulates as in the prior art, and the pivoting operation is performed only on the pivot point. In order to stabilize, the proximity member (inner wall of a bottomed hole in the said prior art) for guiding the movement of a locking member like the sliding motion of the said prior art becomes unnecessary. For these reasons, the operation of the locking member can be prevented from being affected by dust accumulation. Further, the rotation direction of the locking member is set to be around the axis parallel to the central axis of the tip tool, and the locking surface is separated from both the tool retainer and the tool holder at the release position. The subsequent operation of the locking member is to move from the lock position to the release position, and the operation direction of the locking member at this time is not the direction of pressing the dust as in the prior art, but discharges the dust to the outside. Direction. Also from this, it is possible to prevent malfunction of the locking member without being affected by dust.
According to the second aspect of the present invention, in addition to the first aspect of the invention, the locking member is positioned at the lock position and the release position, whereby the locking member is released due to vibration or the like during actual operation. It can prevent moving to a position, and stability is improved. In addition, when changing the tool, the work becomes easy.
以下、本発明の実施の形態を図面に基づいて説明する。
図１は、本発明の一例である打撃工具の全体を表した外観側面図であり、先端部分に本発明にかかる工具保持装置を示したものである。説明にあたり、本発明における打撃工具の内部機構については、公知の技術から何ら変更を要すものではないため省略する。
打撃工具１は、その全体が図示省略のモータを収納するモータハウジング２、モータの回転運動を往復運動に変換する図示省略のクランク機構を収納するクランクハウジング３、作業時に操作者が把持するハンドル４及び圧縮空気を生成し先端工具に打撃力を伝達する図示省略の打撃機構部を収納するバレル部５とから構成される。先端工具６は前記バレル部５の先端部に取付けられたツールホルダ８に保持され、前記打撃機構からの打撃力を受け、対象材料にその打撃力を与えるものである。
次に本発明の主要部である工具保持装置７について、図２を用いて説明する。工具保持装置７は、その土台となるツールホルダ８にツールリテーナ９を回動可能に取付けることによって構成される。詳述すると、図２に示すようにツールリテーナ９に設けられた一対の取付孔９ａ、９ａに嵌め込まれたリング１０、１０の内径部に取付ピン１１、１１を貫通状に挿入し、さらにツールホルダ８に設けられた一対の受容孔８ａ、８ａへと嵌入することでツールホルダ８とツールリテーナ９が連結されるものである。また、取付ピン１１、１１はその先端部に円環状の溝１１ａ、１１ａが設けられ、ツールホルダ８には受容孔８ａ、８ａと直行する方向にピン孔８ｂ、８ｂが設けられている。これは、取付ピン１１、１１がツールホルダ８の受容孔８ａ、８ａに嵌入された状態において、ピン孔８ｂ、８ｂに抜け止めピン１２、１２を圧入することで取付ピン１１、１１の抜け止めをするものである。
なお、リング１０、１０はウレタン製であり、実動時にツールリテーナ９から取付ピン１１に伝わる衝撃を緩衝するためのものである。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an external side view showing an entire impact tool as an example of the present invention, and shows a tool holding device according to the present invention at a tip portion. In the description, the internal mechanism of the striking tool according to the present invention is omitted because it does not require any change from a known technique.
The impact tool 1 has a motor housing 2 that houses a motor (not shown) as a whole, a crank housing 3 that houses a crank mechanism (not shown) that converts the rotational motion of the motor into a reciprocating motion, and a handle 4 that an operator grips during operation. And a barrel portion 5 that houses a striking mechanism (not shown) that generates compressed air and transmits a striking force to the tip tool. The tip tool 6 is held by a tool holder 8 attached to the tip portion of the barrel portion 5, receives a striking force from the striking mechanism, and gives the striking force to the target material.
Next, the tool holding device 7 which is a main part of the present invention will be described with reference to FIG. The tool holding device 7 is configured by rotatably attaching a tool retainer 9 to a tool holder 8 serving as a base. More specifically, as shown in FIG. 2, the mounting pins 11 and 11 are inserted into the inner diameter portions of the rings 10 and 10 fitted in the pair of mounting holes 9a and 9a provided in the tool retainer 9, and the tool is further inserted. The tool holder 8 and the tool retainer 9 are connected by being fitted into a pair of receiving holes 8a, 8a provided in the holder 8. Further, the mounting pins 11 and 11 are provided with annular grooves 11a and 11a at the tips thereof, and the tool holder 8 is provided with pin holes 8b and 8b in a direction perpendicular to the receiving holes 8a and 8a. This is because when the mounting pins 11 and 11 are fitted in the receiving holes 8a and 8a of the tool holder 8, the retaining pins 12 and 12 are press-fitted into the pin holes 8b and 8b, thereby preventing the mounting pins 11 and 11 from coming off. It is something to do.
The rings 10 and 10 are made of urethane, and are used to buffer the impact transmitted from the tool retainer 9 to the mounting pin 11 during actual operation.
ここで本発明の特徴である係止部材１３について説明する。図３に示すように、係止部材１３は基部１３ａと回動軸１３ｂによって構成され、回動軸１３ｂをツールホルダ８に設けられた軸着孔８ｃに嵌入することで取付けられる。ツールホルダ８の軸着孔８ｃは先端工具の軸心と平行な方向に、係止部材を挟んでツールリテーナとは反対側に設けられる。
また、係止部材１３には位置決め機構が設けられており、この機構について説明する。図５に示すように、係止部材１３の回動軸１３ｂの近傍には、回動軸１３ｂと交差する方向に第１凹部１４ａ及び第２凹部１４ｂが設けられている。一方、ツールホルダ８には先端工具と交差する方向にバネ受孔１５が形成され、その孔内にはバネ１６及びストッパボール１７が配設されている。そして、係止部材１３の状態に応じてバネ１６の付勢力を受けたストッパボール１７が第１凹部１４ａ又は第２凹部１４ｂに係合するよう構成され、係止部材１３の位置決めを行っている。
Here, the locking member 13 which is a feature of the present invention will be described. As shown in FIG. 3, the locking member 13 includes a base portion 13 a and a rotation shaft 13 b and is attached by fitting the rotation shaft 13 b into a shaft attachment hole 8 c provided in the tool holder 8. The shaft attachment hole 8c of the tool holder 8 is provided in a direction parallel to the axis of the tip tool on the opposite side of the tool retainer with the locking member interposed therebetween.
Further, the locking member 13 is provided with a positioning mechanism, and this mechanism will be described. As shown in FIG. 5, the 1st recessed part 14a and the 2nd recessed part 14b are provided in the direction which cross | intersects the rotating shaft 13b in the vicinity of the rotating shaft 13b of the latching member 13. As shown in FIG. On the other hand, a spring receiving hole 15 is formed in the tool holder 8 in a direction intersecting the tip tool, and a spring 16 and a stopper ball 17 are disposed in the hole. The stopper ball 17 that receives the urging force of the spring 16 according to the state of the locking member 13 is configured to engage with the first recess 14a or the second recess 14b, and the locking member 13 is positioned. .
以上の如く構成された工具保持装置８について、打撃工具の実動時及び先端工具取替え時における作用を説明する。
打撃工具１の実動時において、ツールリテーナ９はその工具係止部９ｃが先端工具６の細径部６aに対応する位置にあり、先端工具６の抜け止めをする。この状態は従来の技術と同じため詳細な説明は省略する。このとき、図３に示すように係止部材１３の係止面１３ｃはツールリテーナ９の後端部９ｂに当接した状態となり、このことによってツールリテーナ９の回動が阻止される。また、このときの係止部材１３には、図５に示すように、その第１凹部１４ａにストッパボール１７が係合しているため、実動時の振動等によって係止部材１３自体が解除位置へ動いてしまうことを防止することができる。なお、係止部材１３の係止面１３ｃと反対側の面は、ツールホルダ８の段差部８ｄと当接する当接面１３ｄとなっており、実動時の衝撃を係止部材１３が受け止めることはなく、係止部材１３を介してツールホルダ８の段差部８ｄで受ける構造となっている。
With regard to the tool holding device 8 configured as described above, the operation of the impact tool during actual movement and when the tip tool is replaced will be described.
During the actual movement of the impact tool 1, the tool retainer 9 has a tool locking portion 9 c at a position corresponding to the small diameter portion 6 a of the tip tool 6 and prevents the tip tool 6 from coming off. Since this state is the same as the prior art, a detailed description is omitted. At this time, as shown in FIG. 3, the locking surface 13 c of the locking member 13 is in contact with the rear end 9 b of the tool retainer 9, thereby preventing the tool retainer 9 from rotating. Further, as shown in FIG. 5, since the stopper ball 17 is engaged with the first concave portion 14a of the locking member 13 at this time, the locking member 13 itself is released by vibration during actual movement or the like. It can prevent moving to a position. The surface of the locking member 13 opposite to the locking surface 13c is a contact surface 13d that contacts the stepped portion 8d of the tool holder 8, and the locking member 13 receives the impact during actual movement. Rather, it is structured to be received by the stepped portion 8d of the tool holder 8 via the locking member 13.
一方、先端工具６の取替え時には、ツールリテーナ９の回動ロックを解除し、図４に示す開放状態とする必要がある。これにはまず係止部材１３を回動軸１３ｂを支点として解除位置へと回動させることが必要だが、この操作は係止部材１３の基部１３ａを掴んでバネ１６の付勢力に抗してツールホルダ８から離間する方向へと回動させれば良い。係止部材１３を解除位置へ回動させることにより、ツールリテーナ９の後端部９ｂと係止部材１３の係止面１３ｃの当接が解除される（ロックが解除）。その後、工具係止部９ｃを先端工具６の細径部６ａから離間させるべく、ツールリテーナ９を取付ピン１１、１１を支点として回動させれば図４に示す開放状態となる。また、このときの係止部材１３には、図６に示すように、その第２凹部１４ｂにストッパボール１７が係合しているため、新たな先端工具６を取付けるまで、係止部材１３が係止位置へ動いてしまうことを防止することができる。 On the other hand, when the tip tool 6 is replaced, it is necessary to release the rotation lock of the tool retainer 9 so as to be in the open state shown in FIG. For this purpose, it is necessary to first rotate the locking member 13 to the release position with the rotation shaft 13b as a fulcrum. This operation grips the base 13a of the locking member 13 and resists the biasing force of the spring 16. What is necessary is just to rotate in the direction away from the tool holder 8. FIG. By rotating the locking member 13 to the release position, the contact between the rear end portion 9b of the tool retainer 9 and the locking surface 13c of the locking member 13 is released (the lock is released). After that, when the tool retainer 9 is rotated around the mounting pins 11 and 11 to separate the tool locking portion 9c from the small diameter portion 6a of the tip tool 6, the open state shown in FIG. Further, as shown in FIG. 6, since the stopper ball 17 is engaged with the second concave portion 14b of the locking member 13 at this time, the locking member 13 is not mounted until a new tip tool 6 is attached. It can prevent moving to a locking position.
このような構成の工具保持装置７では、実動時に発生する粉塵によって係止部材１３が動作不良を起こすことを防止できるのである。詳述すると、粉塵の影響を最も受けるのは打撃工具使用後の係止部材１３の回動動作、つまり、係止部材１３のロック位置から解除位置への動作である。先にも述べたように、本発明における係止部材１３の解除位置への動作は、ツールリテーナ９及びツールホルダ８から離間する方向へ回動させるものである。このことから、そもそも粉塵が溜まる部位が存在しない構成であるといえる。つまり、係止部材１３が多量の粉塵を被っていてもそれは係止部材の表面に付着しているに過ぎず、係止部材の回動動作に何ら影響するものではないのである。
また、係止部材１３の係止面１３ｃとツールリテーナ９の後端部９ｂとの隙間、あるいは係止部材１３の当接面１３ｄとツールホルダ８の段差部８ｄとの隙間に粉塵が侵入した場合においても、係止部材１３の回動方向が、粉塵を押込む方向ではなく、前述の両隙間を開放する方向であるため、回動操作が若干きつくなる程度の影響はあっても、係止部材１３の回動動作に関して実質上の障害となることはない。さらに、係止部材１３の回動動作自体が、前述の両隙間に侵入した粉塵を外部へ排出するための動作にもなる。このため、前述の両隙間に徐々に粉塵が溜まり、ある一定量を超えると係止部材１３が動作不良を起こすという虞もない。
そして、係止部材１３が解除位置にある状態では、係止部材１３がその回動軸１３ｂを除いてツールリテーナ９及びツールホルダ８から離間しているため、係止部材１３の係止面１３ｃ、当接面１３ｄ、ツールリテーナ９の後端部９ｂおよびツールホルダ８の段差部８ｄが全て目視可能であり、粉塵が付着していれば容易に取除くことが可能である。
このように本構造によれば、粉塵の影響を受けることが極めて少なく、また、粉塵の付着状況を確認することもでき、さらには付着した粉塵を容易に取除くことができる工具保持装置を提供することができる。
また、実動時にツールリテーナ９が先端工具６から受ける衝撃についても、その負荷を係止部材１３が受け止めるものではなく、係止部材１３を介して頑丈な部材であるツールホルダ８が受けることになる。このため、係止部材１３の耐久性能を向上させることにも繋がる。
In the tool holding device 7 having such a configuration, the locking member 13 can be prevented from malfunctioning due to dust generated during actual operation. More specifically, the most affected by the dust is the turning operation of the locking member 13 after using the impact tool, that is, the operation of the locking member 13 from the lock position to the release position. As described above, the movement of the locking member 13 to the release position in the present invention is to rotate in a direction away from the tool retainer 9 and the tool holder 8. From this, it can be said that the structure does not have a part where dust accumulates in the first place. That is, even if the locking member 13 is covered with a large amount of dust, it only adheres to the surface of the locking member and does not affect the rotation of the locking member.
Further, dust has entered the gap between the locking surface 13 c of the locking member 13 and the rear end 9 b of the tool retainer 9, or the gap between the contact surface 13 d of the locking member 13 and the stepped portion 8 d of the tool holder 8. Even in this case, the rotation direction of the locking member 13 is not the direction in which the dust is pushed in, but the direction in which both the above-described gaps are opened. There is no substantial obstacle with respect to the rotation of the stop member 13. Furthermore, the rotation operation itself of the locking member 13 is also an operation for discharging the dust that has entered the gaps to the outside. For this reason, there is no possibility that the dust gradually accumulates in both the above-described gaps and that the locking member 13 malfunctions when a certain amount is exceeded.
When the locking member 13 is in the release position, the locking member 13 is separated from the tool retainer 9 and the tool holder 8 except for the rotation shaft 13b. The contact surface 13d, the rear end portion 9b of the tool retainer 9, and the stepped portion 8d of the tool holder 8 are all visible, and can be easily removed if dust is attached.
As described above, according to this structure, a tool holding device that is extremely less affected by dust, can check the state of dust attachment, and can easily remove the attached dust is provided. can do.
Further, the impact received by the tool retainer 9 from the tip tool 6 during actual operation is not received by the locking member 13 but is received by the tool holder 8, which is a sturdy member, via the locking member 13. Become. For this reason, it leads also to improving the durable performance of the locking member 13.
なお、本実施例における係止部材は、その基部と回動軸を一体で形成しているが、回動軸を別体のピンとして形成し、圧入等によって基部に固定する構成としても差し支えない。
また、係止部材の基部は、回動操作のための操作用摘みであると同時に、その側面はツールリテーナと当接する係止面の機能を有した兼用構造としたが、これは簡易で低コストである効果を有すものであり、本発明の目的である粉塵対策としては本構造の形態に限るものではなく、回動操作のための操作部とツールリテーナと当接する係止面とは各々単独の役割を持つ形態としても差し支えない。
さらには、係止部材の位置決め機構として、ツールホルダにストッパボールを配設し、係止部材に凹部を形成したが、本構造に限定されるものではなく、係止部材とツールホルダの一方に凸部、他方に凹部を形成し、それらが係合する構成であれば良く、それらの形態はどのようなものであっても差し支えはない。
In addition, although the locking member in a present Example has integrally formed the base and the rotating shaft, it does not interfere with the structure which forms a rotating shaft as a separate pin, and fixes to a base by press-fit etc. .
In addition, the base of the locking member is an operation knob for rotating operation, and at the same time, the side surface has a combined structure having a function of a locking surface that comes into contact with the tool retainer. It has an effect that is cost, and the dust countermeasure that is the object of the present invention is not limited to the form of this structure, the operation part for the rotation operation and the locking surface that contacts the tool retainer It may be a form having each individual role.
Furthermore, as a positioning mechanism for the locking member, a stopper ball is provided in the tool holder and a recess is formed in the locking member. However, the present invention is not limited to this structure, and one of the locking member and the tool holder is used. Any configuration may be used as long as the convex portion and the concave portion are formed on the other side and they are engaged with each other.
１・・・打撃工具
２・・・モータハウジング
３・・・クランクハウジング
４・・・ハンドル
５・・・バレル部
６・・・先端工具
７・・・工具保持装置
８・・・ツールホルダ
８ａ・・・受容孔
８ｂ・・・ピン孔
８ｃ・・・軸着孔
８ｄ・・・段差部
９・・・ツールリテーナ
９ａ・・・取付孔
９ｂ・・・後端部
９ｃ・・・工具係止部
１０・・・リング
１１・・・取付ピン
１１ａ・・・溝
１２・・・抜け止めピン
１３・・・係止部材
１３ａ・・・基部
１３ｂ・・・回動軸
１３ｃ・・・係止面
１３ｄ・・・当接面
１４ａ・・・第１凹部
１４ｂ・・・第２凹部
１５・・・バネ受孔
１６・・・バネ
１７・・・ストッパボール
DESCRIPTION OF SYMBOLS 1 ... Impact tool 2 ... Motor housing 3 ... Crank housing 4 ... Handle 5 ... Barrel part 6 ... Tip tool 7 ... Tool holding device 8 ... Tool holder 8a ··· Receiving hole 8b ··· Pin hole 8c · Shaft mounting hole 8d · Step portion 9 · Tool retainer 9a · Mounting hole 9b · Rear end portion 9c · Tool locking portion DESCRIPTION OF SYMBOLS 10 ... Ring 11 ... Mounting pin 11a ... Groove 12 ... Retaining pin 13 ... Locking member 13a ... Base 13b ... Rotating shaft 13c ... Locking surface 13d ... abutment surface 14a ... first recess 14b ... second recess 15 ... spring receiving hole 16 ... spring 17 ... stopper ball
Claims (2)
該工具保持装置は、前記ツールリテーナが保持位置にあるとき、その回動を阻止するロック位置と回動を許容する解除位置との間で可動な係止部材をさらに有し、
該係止部材は前記先端工具の中心軸に平行な軸線周りに回動可能に前記ツールホルダに軸着され、前記ロック位置においては、前記係止部材に設けられた係止面が、前記ツールリテーナの後端部に当接し、前記解除位置においては、前記係止面が前記ツールリテーナの後端部から離間するとともに、前記ツールホルダからも離間することを特徴とする打撃工具用工具保持装置。 A tool holder into which a tip tool is inserted, and a pivot position that is pivotally attached to the tool holder and can be rotated by a predetermined angle between a holding position for holding the tip tool mounted state and an open position for allowing the tip tool to be removed. A tool holding device for an impact tool comprising a tool retainer,
When the tool retainer is in the holding position, the tool holding device further includes a locking member that is movable between a lock position that prevents the rotation and a release position that allows the rotation.
The locking member is pivotally attached to the tool holder so as to be rotatable about an axis parallel to the central axis of the tip tool, and in the locked position, a locking surface provided on the locking member is the tool. A tool holding device for a striking tool that abuts against a rear end portion of a retainer, and in the release position, the locking surface is separated from the rear end portion of the tool retainer and is also separated from the tool holder. .
The tool holding device for an impact tool according to claim 1, further comprising a locking member positioning mechanism in which the locking member is positioned at the lock position and the release position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005297065A JP4450390B2 (en) | 2005-10-12 | 2005-10-12 | Tool holding device for impact tools. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005297065A JP4450390B2 (en) | 2005-10-12 | 2005-10-12 | Tool holding device for impact tools. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007105812A JP2007105812A (en) | 2007-04-26 |
| JP4450390B2 true JP4450390B2 (en) | 2010-04-14 |
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|---|---|---|---|
| JP2005297065A Expired - Fee Related JP4450390B2 (en) | 2005-10-12 | 2005-10-12 | Tool holding device for impact tools. |
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| Country | Link |
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| JP (1) | JP4450390B2 (en) |
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