JPH0326472A - Head valve for fixing tool driver - Google Patents
Head valve for fixing tool driverInfo
- Publication number
- JPH0326472A JPH0326472A JP15912689A JP15912689A JPH0326472A JP H0326472 A JPH0326472 A JP H0326472A JP 15912689 A JP15912689 A JP 15912689A JP 15912689 A JP15912689 A JP 15912689A JP H0326472 A JPH0326472 A JP H0326472A
- Authority
- JP
- Japan
- Prior art keywords
- head valve
- piston
- cylinder
- cap
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims description 14
- 230000000284 resting effect Effects 0.000 description 3
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Portable Nailing Machines And Staplers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分！Ｔ
本発明は、固着具打込機に関し，、特に、釘打機等の固
着具打込機のブレードを駆動するための、ビストンンリ
ング装置で成る駆動装置のヘッドバルブ會の改良に関す
る。[Detailed description of the invention] Industrial use! T The present invention relates to a fastener driving machine, and more particularly to an improvement in the head valve assembly of a drive device comprising a piston ring device for driving a blade of a fastener driving machine such as a nail gun.
従来の技術
圧縮空気等の圧力流体を利用して、釘等の固着具を打込
む固着具打込機は、建築関係の分野では欠かせない工具
である。2. Description of the Related Art Fastener driving machines, which drive fasteners such as nails using pressurized fluid such as compressed air, are indispensable tools in construction-related fields.
このような工具の駆動装置の代表的なものとしで、ピス
トンと、このピストンを往復動自在に収容するンリンダ
と、、ピストンに連結され、釘等の固着具を打撃して対
象物に打込むためのブレードと、第ｌの状態では圧縮空
気等の圧力流体をピストンの背面に供給せず、第２の状
態では圧縮空気等の圧力流体をピストンの背面に供給し
てブレードを衝撃的に移動させるように開閉する、シリ
ンダの端邪に隣接配置されたヘッドバルブと、該ヘッド
バルブの開閉を制御する手段とを備えたものがある。こ
の詩置において、前記の制御手段は、釘打機のハンドル
に取付けられたトリガレバーを含むトリガ機構と、ト・
リガ機構から圧力流体を前記ヘッドバルブに供給して、
トリガレバーの非作動時にはヘッドバルブを第ｌの状態
に保持し、トリガレバーを作動させるとヘッドバルブの
状態を前記第１の状態から第２の状態に切り換えるこど
ができる切換手段とを有し、これによって、トリガを引
くと釘が壁等の対象物に打込まれる。A typical driving device for such a tool includes a piston, a cylinder that accommodates the piston in a reciprocating manner, and a cylinder that is connected to the piston and drives a fastener such as a nail into the target object. In the first state, no pressure fluid such as compressed air is supplied to the back of the piston, and in the second state, the blade is impulsively moved by supplying pressure fluid such as compressed air to the back of the piston. Some cylinders are equipped with a head valve disposed adjacent to the end of the cylinder that opens and closes in a manner that allows the head valve to open and close, and means for controlling the opening and closing of the head valve. In this device, the control means includes a trigger mechanism including a trigger lever attached to the handle of the nailer;
supplying pressure fluid to the head valve from a trigger mechanism;
a switching means capable of holding the head valve in a first state when the trigger lever is not actuated and switching the state of the head valve from the first state to the second state when the trigger lever is actuated; , whereby when the trigger is pulled, the nail is driven into an object such as a wall.
発明が解決しようとする課題
この固着具打込機は、上記のように建築現場等では欠く
ことのできない必需品となっているが、釘打機の駆動装
置に用いられるヘッドバルブは、ブレードを駆動するた
めの心臓部となるもので、その形状は、ピストンの背面
に隣接するフランジと、その後方に延びる筒状体とで形
或される中空のきのこ形状をしており、その形状から、
ヘッドバルブはボベットバルブとも呼ばれている。し，
かし、この形状のため、ヘッドバルブは構造が複雑でし
かも高価なものになってしまっていた。Problems to be Solved by the Invention As mentioned above, this fastening tool driving machine has become an indispensable item at construction sites, etc. However, the head valve used in the driving device of the nailing machine does not drive the blade. It is the heart of the piston, and its shape is a hollow mushroom formed by a flange adjacent to the back of the piston and a cylindrical body extending behind it.
The head valve is also called a Bobet valve. death,
However, this shape made the head valve complex and expensive.
これにχＩ処するため、特開昭６３−２５６３７７号公
報は１部品でこのポベットバルブを構或することを提案
している。この公報記載のヘンドバルブは、構造上及び
組み付け上におい−Ｃ簡単且つ安価であり、しかも、．
シールの機能が常時保たれ、ピストン背面への圧縮空気
の供給の順序が正確に制御される等の利点があ，って好
ましいものである。In order to deal with this problem, Japanese Patent Laid-Open No. 63-256377 proposes constructing this povet valve with one component. The hend valve described in this publication is simple and inexpensive in terms of structure and assembly.
This is preferable because of the advantages that the seal function is maintained at all times and the order of supply of compressed air to the back surface of the piston is accurately controlled.
しかし、この固着具打込機においてもまだ改良の余地は
あった。すなわち、キャップに排気口に通ずる部分を気
密ンールするＯ ＩＪングが、ヘッドバルブの内側に設
けられている点である。かかる０リングが内側にあるこ
とは、それだけ、排気口の面積が小みくなってしまい、
排気口を必要な大きさに維持するには、バルブのシール
部分の大きさを人キくシてバルブのストロークを大きく
する必要があった。このため、固着具打込機のザイズの
小型化に不向さて”あった。However, there was still room for improvement in this fastener driving machine. That is, an O IJ ring is provided inside the head valve to seal the part of the cap that communicates with the exhaust port airtight. The fact that the O-ring is on the inside means that the area of the exhaust port becomes smaller.
In order to maintain the required size of the exhaust port, it was necessary to increase the size of the valve seal and increase the valve stroke. For this reason, it was not suitable for reducing the size of the fastener driving machine.
課題を解決するための手段
かかる目的を達或するため、本発明によれば、ピストン
と、このピストンを往復劾自在に収容すろシリンダと、
＠記ピストンに連結され、釘等の固着具を打撃して該同
着具を対象物に打込むためのブレードと、静止状態では
圧縮空気等の圧力流体をビス１・ンの背面に供給せず、
打込状熊では圧力流体をピストンの背面に供給しでブｌ
ノ一ドを急激に移動させるように開閉する、シリンダの
端邪に隣接配置されたヘッドバルブと、該ヘッドバルブ
の開閉を？ｒｆＪ御する手段とを備え、この制御手段は
、ハンドルに取付けられたトリガレバーを含むトリガ機
構と、該トリガ機構から圧力流体を前記ヘ・ツドバルブ
に供給して、トリガレバーの非作動時にはへ７１・′バ
ルブを静止状態に保持し、トリガレバーを作動さｄると
ー・ツドバルブを静止状態から打込状態に切り換える切
換手段とを有する固着具打込機であって、シリンダの上
方に設けられてヘソドバルブを支持し且つ包囲するよう
に設けられたキャップとシリンダとの開には中空の補助
取付け部材が設けられ、前記ヘッドバルブはシリンダの
上方端部の内側に入る下端部とキャップの内側の部分と
の間にシールを形成する上方端部とを有する中空の環状
部材で戒り、このヘッドバルブの外周面には、前記補助
取付け部材の内側に対して気密シールを形戒する手段と
キャップの排気口を気密シールする手段とが設けられて
いることを特微とする固着具打込機が提供される。Means for Solving the Problems In order to achieve this object, the present invention provides a piston, a cylinder that accommodates the piston in a reciprocating manner,
It is connected to the piston and has a blade for hitting a fixing tool such as a nail to drive the fixing tool into the object, and a blade that supplies pressurized fluid such as compressed air to the back of the screw when in a stationary state. figure,
In the case of a driven-in type, pressurized fluid is supplied to the back of the piston.
A head valve placed adjacent to the end of the cylinder that opens and closes to rapidly move the nodule, and the opening and closing of the head valve? rfJ control means, the control means includes a trigger mechanism including a trigger lever attached to the handle, and a means for supplying pressurized fluid from the trigger mechanism to the head valve to 71 when the trigger lever is not actuated.・A fastener driving machine having a switching means for holding the valve in a stationary state and operating a trigger lever, and ・switching means for switching the valve from a static state to a driving state, which is installed above the cylinder. A hollow auxiliary mounting member is provided at the opening between the cap and the cylinder, which is provided to support and surround the head valve; a hollow annular member having an upper end forming a seal between the head valve and the auxiliary mounting member; A fastener driving machine is provided, characterized in that it is provided with means for airtightly sealing the exhaust port of the fastener.
実施例
以下、本発明の実施例について、図面を参照しながら説
明する。第１図には固着具打込機の代表的な例として自
劾釘打機１の全体概格図が示されている。釘打機のハウ
ジング２にはハンドル３が形成され、このハンドル３に
は、コイル状に巻回された釘の連設体を収容するマガジ
ン（図示せず）が取付けられ、マガジンから釘打機ｌの
ノーズに設けられた釘の給送装置５によって釘が連続的
に供給される。釘打機ｌのハウジング２のハンドル３の
端邪には、圧力流体としての圧縮空気を供給するニップ
ル６が設けられ、ここから圧縮空気が供給される。供給
された圧縮空気は、トリガレバー７を引くことによって
、ブレード８が急激に図の左側に移動させられ、給送装
置５から送られる釘を打撃し、例えば、壁等の対象物に
打込む。打込んだ後、例えば、トリガレバー７を離すと
、ブレード８は元の位置すなわち静止状態に戻り、この
復帰工程において、給送装置５は次の釘をノーズの打込
室に配置する。釘打機の構威及び動作の概略の説明につ
いては、既に良く知られているのでこれ以上の説明を省
略する。EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings. FIG. 1 shows an overall schematic diagram of a self-propelled nailing machine 1 as a typical example of a fastening tool driving machine. A handle 3 is formed in the housing 2 of the nailer, and a magazine (not shown) for accommodating a series of coiled nails is attached to the handle 3, and the nailer is removed from the magazine. Nails are continuously supplied by a nail feeding device 5 provided at the nose of the nail. A nipple 6 for supplying compressed air as pressure fluid is provided at the end of the handle 3 of the housing 2 of the nailing machine l, and the compressed air is supplied from here. By pulling the trigger lever 7, the supplied compressed air causes the blade 8 to suddenly move to the left in the figure, striking the nail sent from the feeding device 5 and driving it into an object such as a wall. . After driving, for example, when the trigger lever 7 is released, the blade 8 returns to its original or resting position, and in this return process the feeding device 5 places the next nail in the driving chamber of the nose. A general explanation of the structure and operation of the nailing machine is already well known, so further explanation will be omitted.
以下、本発明の実施例について、第１図〜第３図を参照
しながら詳しく説明する。本発明に係る固着具打込機の
ブレード７の駆動機構は、ハウジング２の内側に、ピス
トン１１と、このピストンを往復動自在に収容するシリ
ンダ１２とを備え、ピストン１１にはブレード８が固着
されている。Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 3. The drive mechanism for the blade 7 of the fastener driving machine according to the present invention includes a piston 11 and a cylinder 12 that reciprocates the piston inside the housing 2, and the blade 8 is fixed to the piston 11. has been done.
ハウジング２の上端部にはキャップ１３が取付けられて
いる。そして、シリンダ１２の上端部とキャップ１３こ
の間には、後述のヘッドバルブを支持し且つ包囲するよ
うに、中空の補助取付け部材１４が設けられている。ま
た、この補助取付け部材１４の内側には、静止状態で圧
縮空気等の圧力流体をピストン１ｌの背面（図の上側）
に供給しないが、打込状態では圧力流体をピストン背面
に供給してブレード２を衝撃的に移動させるように開閉
するヘッドバルブ１５が配置されている。A cap 13 is attached to the upper end of the housing 2. A hollow auxiliary mounting member 14 is provided between the upper end of the cylinder 12 and the cap 13 so as to support and surround a head valve, which will be described later. In addition, inside this auxiliary mounting member 14, pressurized fluid such as compressed air is supplied to the back of the piston 1l (upper side in the figure) in a stationary state.
A head valve 15 is disposed that opens and closes so as to supply pressurized fluid to the back surface of the piston and move the blade 2 impulsively in the driving state.
ヘッドバルブｌ５は、図示のように、ピストン１１の背
面に隣接するフランジｌ６とその後方に延びる筒状体１
７とで形成され、全体として中空のきのこの形状をして
おり、ポペットバルブとも呼ばれている。このヘッドバ
ルブ１５は、第２図に示されるように、キャップｌ３と
補助取付け部材１４によって形成される空間を２分して
おり、２分された室の内、第１の室１８にはニップル６
から人力された圧縮空気がそのまま供給され、第２の室
１９には第ｌ図のトリガレバー７を含む、ヘッドバルブ
の開閉の制御のためのダンブバルブ機構２０からの圧力
流体としての圧縮空気が供給通路２１を通して送られる
。As shown in the figure, the head valve l5 includes a flange l6 adjacent to the back surface of the piston 11 and a cylindrical body 1 extending behind the flange l6.
7 and has a hollow mushroom shape as a whole, and is also called a poppet valve. As shown in FIG. 2, this head valve 15 divides the space formed by the cap l3 and the auxiliary mounting member 14 into two, and of the two divided chambers, the first chamber 18 has a nipple. 6
The second chamber 19 is supplied with compressed air as a pressurized fluid from the dumb valve mechanism 20 for controlling the opening and closing of the head valve, which includes the trigger lever 7 shown in FIG. It is sent through passage 21.
ヘッドバルブ１５は、先に説明したトリガレバー７を含
むトリガ機構と、トリガレバーの非作動時にはヘッドバ
ルブ１５を第２図に示す静止状態に保持し、トリガレバ
ーを作動させるとヘッドバルブ■５を静止状態から、第
３図に示す打込状襟に切り換えることができるダンプバ
ルブ２０等の手段によって制御される。かかる制御は既
に知られているのでこれ以上の説明を省略する。The head valve 15 has a trigger mechanism including the trigger lever 7 described above, and when the trigger lever is not activated, the head valve 15 is held in the stationary state shown in FIG. 2, and when the trigger lever is activated, the head valve 5 is activated. It is controlled by means such as a dump valve 20 which can be switched from a rest state to the driving collar shown in FIG. Since such control is already known, further explanation will be omitted.
いずれにしても、トリガレバー７を引かない第１の状態
では、第２図の如く、供給通路２１及びダンブバルブ２
０を介して圧縮空気が第２の室すなわち圧力室１９に供
給され、ヘッドバルブ１５を第２図の下側に押す。従っ
て、ピストン１１の背面に圧縮空気を与えず、ブレード
８を上方端部に停止させる。次に、トリガレバー７を引
くと、供給通路２１に供給されていた圧縮空気が排出さ
れ、該通路の圧力が大気圧と同じになり、ダンプバルブ
２０が第３図に図示のように、下の側に移動して第２の
室すなわち圧力室１９の圧力空気を逃がしてしまう。こ
のため、ヘッドバルブ１５を下の側に押しつける力は中
のばね２２の力の程度となってしまう。このばね力はそ
れ程強力なものではない。他方、第ｌ室ｌ８には常時圧
縮空気が供給されており、ヘッドバルブのフランジ１６
にその空気の圧力が加わる。その結果、第１室１８の圧
縮空気の圧力がばね力に勝って、ヘッドバルブ１５を上
方へ移動させる。ヘッドバルブ１５の移動により、第３
図に示すように、シリンダ１２の」二方端面とー・・ツ
ドバルブ１５下端部との間のシールが解除され、第１室
１８から、圧縮空気がピス１・ン１１の背面に供給され
，、ビスｌ・ン１１を前方（図の左側）に急激に押し出
し、プレー・ド８が釘等の固着具を壁等の対象物に打込
む。In any case, in the first state where the trigger lever 7 is not pulled, as shown in FIG.
Compressed air is supplied to the second or pressure chamber 19 via the pressure chamber 19, pushing the head valve 15 downward in FIG. Therefore, compressed air is not applied to the back surface of the piston 11, and the blade 8 is stopped at the upper end. Next, when the trigger lever 7 is pulled, the compressed air supplied to the supply passage 21 is discharged, the pressure in the passage becomes equal to atmospheric pressure, and the dump valve 20 is moved downward as shown in FIG. The pressure air in the second chamber, that is, the pressure chamber 19, is released. Therefore, the force that presses the head valve 15 downward is approximately the same as the force of the spring 22 inside. This spring force is not very strong. On the other hand, compressed air is constantly supplied to the first chamber l8, and the flange 16 of the head valve
The pressure of that air is added to the As a result, the pressure of the compressed air in the first chamber 18 overcomes the spring force, causing the head valve 15 to move upward. By moving the head valve 15, the third
As shown in the figure, the seal between the two end faces of the cylinder 12 and the lower end of the piston valve 15 is released, and compressed air is supplied from the first chamber 18 to the back of the piston 11. , the screw 11 is suddenly pushed forward (to the left in the figure), and the plate 8 drives a fixing tool such as a nail into an object such as a wall.
打込んだ後、トリガレバーを放すと、ダンブバルブが再
び第２図の位置に復帰して、先の説明のように、ヘッド
バルブも第２図の位置に復帰し、また、ピストンｌ１も
復帰室からの圧力空気の助力を得て上方の静止位置に復
帰する。After driving, when the trigger lever is released, the dumb valve returns to the position shown in Figure 2, the head valve also returns to the position shown in Figure 2, as explained earlier, and the piston l1 also returns to the return chamber. It returns to its resting position with the help of compressed air from above.
本発明においては、上記したヘッドバルブ１５と、」゛
ヤブブｌ３とシリンダｌ２との間に独特の工夫が施され
ている。すなわち、本発明においては、シリンダ１２の
上方に設けられてヘッドバルブｌ５を支持し且つ包囲す
るように設けられたキャップｌ３とシリンダ１２との間
には中空の補助取何け部材１４が設けられている。この
補助取付け部材ｌ４はヘッドバルブ■５とは違って可動
ではない。そして、この補助取付け部材１４の上端部と
キャップ１３の下端部との間には、圧力空気の排気口２
４が形成されている。In the present invention, unique features are provided between the above-mentioned head valve 15, the cylinder 13, and the cylinder 12. That is, in the present invention, a hollow auxiliary holding member 14 is provided between the cylinder 12 and the cap l3 provided above the cylinder 12 to support and surround the head valve l5. ing. This auxiliary mounting member 14 is not movable unlike the head valve 5. A pressure air exhaust port 2 is provided between the upper end of the auxiliary mounting member 14 and the lower end of the cap 13.
4 is formed.
また、本発明においては、ヘッドバルブ１５がシリンダ
の上方端部の内側に入る下端部とキャップの内側の郎分
との間にシールを形或する上方端部とを有する中空の環
状部材で筬る。そして、このヘッドバルブの外周面には
、前記補助取付け部材１４の内側に対して気密シールを
形或する手段としての○リング２５及び２６と、キャッ
プの排気口２４を気密シールする手段としての０リング
２７が設けられている。特に、○リング２５及び２６は
、第２図の静止状態にあるとき、第２圧力室ｌ９を形或
するもので、第３図の打撃位置に有る時には、圧力室１
９が無くなり排気口２４を気密シールするように配置さ
れている。Further, in the present invention, the head valve 15 is formed of a hollow annular member having a lower end portion that enters inside the upper end portion of the cylinder and an upper end portion that forms a seal between the inner portion of the cap. Ru. On the outer circumferential surface of this head valve, O rings 25 and 26 are provided as means for forming an airtight seal against the inside of the auxiliary mounting member 14, and O rings 26 are provided as means for airtightly sealing the exhaust port 24 of the cap. A ring 27 is provided. In particular, the O-rings 25 and 26 form the second pressure chamber l9 when in the resting state of FIG. 2, and form the second pressure chamber l9 when in the striking position of FIG.
9 is disposed so as to airtightly seal the exhaust port 24.
そして、本発明のヘッドバルブにおいては、更に、ヘッ
ドバルブｌ５の下端部とシリンダ１２の−ｋ：．端部と
の間にゴム等の弾性体で気密シールするシールリング２
８が設けられるのが好ましい。また、排気口２４の部分
は、図示のように、上方に向けて且つ０リング２７の側
に向けてテーバしているのが好ましい。これは、復帰工
程において、ヘッドバルブが下降する際に一旦シリンダ
１２の上端部とヘッドバルブ１５のフランジ１６との間
のシールを不完全シールに形或させて衝撃的な移動を防
止し、その後の遅い速度の下降によって完全な気密を保
つようにするのが好ましいからである。In the head valve of the present invention, the lower end of the head valve l5 and the -k: . Seal ring 2 that is airtightly sealed with an elastic material such as rubber between the ends
8 is preferably provided. Further, it is preferable that the exhaust port 24 is tapered upward and toward the O-ring 27 side, as shown in the drawing. This is because, in the return process, when the head valve descends, the seal between the upper end of the cylinder 12 and the flange 16 of the head valve 15 is temporarily formed into an incomplete seal to prevent impact movement, and then This is because it is preferable to maintain complete airtightness by lowering at a slow speed.
上記のように、本発明のヘッドバルブ１５は、その外周
面に気密シール手役としての０リングが設けられている
ので、ヘッドバルブ１５の内側にはスペースが増えるこ
とになる。このため、急激に移動するピストン１１のた
めのクッション３０をキャップ１３に大きく形或して面
積を大きくすることができる。従って、クッ／ａン３０
の強度も十分なものとなり、ひび．や割れを生ずること
もなくなる。As described above, since the head valve 15 of the present invention is provided with an O-ring as an airtight seal on its outer peripheral surface, the space inside the head valve 15 is increased. For this reason, the cushion 30 for the rapidly moving piston 11 can be made larger in the cap 13 and the area thereof can be increased. Therefore, ku/a30
It also has sufficient strength to prevent cracks. This also eliminates the possibility of cracking or cracking.
発明の効果
本発明の固着具打込機によれば、キャップとシリンダと
の間には中空の補助取付け部材が設けられ、ヘッドバル
ブはシリンダの上方端部の内側に入る下ＦＪ ｌｆｆｉ
とキャップの内側の部分との間にシールを形或する上方
端部とを有する中空の環状部材で成り、このヘンドバル
ブの外周面には、前記補助取付け部材の内側に対して気
密シールを形或する手段とキャップの排気口を気密シー
ルする手段とが設けられているので、排気口の全体の面
積が大きくでき、このため、ヘッドバルブのストローク
を小さくでき、固着具打込機全体を小型化できる。Effects of the Invention According to the fastener driving machine of the present invention, a hollow auxiliary mounting member is provided between the cap and the cylinder, and the head valve is inserted into the upper end of the cylinder.
and an upper end forming a seal between the hend valve and the inner portion of the cap, the outer peripheral surface of the hend valve forming an airtight seal against the inner side of the auxiliary mounting member. Since a means for airtightly sealing the exhaust port of the cap and a means for airtightly sealing the exhaust port of the cap are provided, the overall area of the exhaust port can be increased, and therefore the stroke of the head valve can be reduced, and the entire fastener driving machine can be made smaller. can.
また、ピストン用のクッションも大きくでき、このため
、クッションの強度を向上でき、ひびや割れ等の厄介な
問題もなくなる。更に、気密シール手段としての０リン
グがヘッドバルブの外周面に設けられるので、その組付
けが極めて簡単である。これに加えて、補助取付け部材
がシリンダの上端部を規制することができるので、シリ
ンダの芯出しが簡単にでき、ヘッドバルブの移動がシリ
ンダに対して正確に維持され、気密シールを確実に果た
す。Moreover, the cushion for the piston can also be made larger, which improves the strength of the cushion and eliminates troublesome problems such as cracks and cracks. Furthermore, since the O-ring as an airtight sealing means is provided on the outer peripheral surface of the head valve, its assembly is extremely simple. In addition to this, an auxiliary mounting member can restrict the upper end of the cylinder, making it easy to center the cylinder, ensuring that the head valve travel remains accurate relative to the cylinder, and ensuring an airtight seal. .
第１図は固着具打込機の代表的な例としての自動釘打機
の概略断面図、第２図は静止状態にある釘打機の駆動装
置を示す概略部分断面図、第３図は打込み状態にある釘
打機の駆動装置を示す概略部分断面図である。
符号の説明
１・・・・・・固着具打込機としての釘打機２・・・・
・・ハウジング ３・・・・・・ハンドル５・・・
・・・釘の給送装置 ７・・・・・・トリガレバー８
・・・・・・ブレード １１・・・・・・ピストン
１２・・・・・・シリンダ １３・・・・・・キャ
ップ１５・・・・・・ヘッドバルブ １６・・・・・・
フランジ１８・・・・・・第１の室 １９・・・・
・・第２の室２０・・・・・・ダンブバルブ ２１・・
・・・・通路２２・・・・・・ばね ２３・・
・・・・スベーサ２４・・・・・・排気口
２ ５、
２ ６、
７・・・・・・シールとしての○
リングFig. 1 is a schematic cross-sectional view of an automatic nail driver as a typical example of a fastener driving machine, Fig. 2 is a schematic partial cross-sectional view showing the driving device of the nail driver in a stationary state, and Fig. FIG. 2 is a schematic partial sectional view showing the drive device of the nail gun in a driving state. Explanation of symbols 1... Nailing machine 2 as a fastener driving machine...
...Housing 3...Handle 5...
... Nail feeding device 7 ... Trigger lever 8
...Blade 11 ... Piston 12 ... Cylinder 13 ... Cap 15 ... Head valve 16 ...
Flange 18...First chamber 19...
...Second chamber 20...Danbu valve 21...
...Passage 22...Spring 23...
...Subasa 24...Exhaust port 2 5, 2 6, 7...○ ring as a seal
Claims (1)
リンダと、前記ピストンに連結され、釘等の固着具を打
撃して該固着具を対象物に打込むためのブレードと、静
止状態では圧縮空気等の圧力流体をピストンの背面に供
給せず、打込状態では圧力流体をピストンの背面に供給
してブレードを急激に移動させるように開閉する、シリ
ンダの端部に隣接配置されたヘッドバルブと、該ヘッド
バルブの開閉を制御する手段とを備え、この制御手段は
、ハンドルに取付けられたトリガレバーを含むトリガ機
構と、該トリガ機構から圧力流体を前記ヘッドバルブに
供給して、トリガレバーの非作動時にはヘッドバルブを
静止状態に保持し、トリガレバーを作動させるとヘッド
バルブを静止状態から打込状態に切り換える切換手段と
を有する固着具打込機において、シリンダの上方に設け
られてヘッドバルブを支持し且つ包囲するように設けら
れたキャップとシリンダとの間には中空の補助取付け部
材が設けられ、前記ヘッドバルブはシリンダの上方端部
の内側に入る下端部とキャップの内側の部分との間にシ
ールを形成する上方端部とを有する中空の環状部材で成
り、このヘッドバルブの外周面には、前記補助取付け部
材の内側に対して気密シールを形成する手段とキャップ
の排気口を気密シールする手段とが設けられていること
を特徴とする固着具打込機。A piston, a cylinder that accommodates the piston in a reciprocating manner, a blade connected to the piston and used to strike a fastener such as a nail and drive the fastener into an object, and a compressed air etc. when in a stationary state. a head valve disposed adjacent to the end of the cylinder that does not supply pressurized fluid to the rear surface of the piston, but opens and closes in a driving state to supply pressurized fluid to the rear surface of the piston to rapidly move the blade; means for controlling opening and closing of the head valve, the control means comprising: a trigger mechanism including a trigger lever attached to a handle; and a means for supplying pressurized fluid from the trigger mechanism to the head valve to control opening and closing of the trigger lever. In a fastener driving machine having a switching means that holds the head valve in a stationary state during operation and switches the head valve from a stationary state to a driving state when a trigger lever is actuated, the head valve is A hollow auxiliary mounting member is provided between the supporting and surrounding cap and the cylinder, and the head valve is connected to the inner portion of the cap and the lower end that is inside the upper end of the cylinder. The head valve comprises a hollow annular member having an upper end forming a seal therebetween, the outer peripheral surface of the head valve having means for forming an airtight seal against the inside of the auxiliary mounting member and an airtight exhaust port of the cap. A fastening tool driving machine characterized by being provided with means for sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1159126A JP2741406B2 (en) | 1989-06-21 | 1989-06-21 | Head valve of fastener driving machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1159126A JP2741406B2 (en) | 1989-06-21 | 1989-06-21 | Head valve of fastener driving machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0326472A true JPH0326472A (en) | 1991-02-05 |
| JP2741406B2 JP2741406B2 (en) | 1998-04-15 |
Family
ID=15686808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1159126A Expired - Fee Related JP2741406B2 (en) | 1989-06-21 | 1989-06-21 | Head valve of fastener driving machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2741406B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57177666U (en) * | 1981-05-06 | 1982-11-10 | ||
| JPS63256377A (en) * | 1987-04-14 | 1988-10-24 | 兼松日産農林株式会社 | Drive for box nailing machine, etc. |
-
1989
- 1989-06-21 JP JP1159126A patent/JP2741406B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57177666U (en) * | 1981-05-06 | 1982-11-10 | ||
| JPS63256377A (en) * | 1987-04-14 | 1988-10-24 | 兼松日産農林株式会社 | Drive for box nailing machine, etc. |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2741406B2 (en) | 1998-04-15 |
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