WO2006119665A1 - A nailing machine driven by liquid pressurized gas - Google Patents

A nailing machine driven by liquid pressurized gas Download PDF

Info

Publication number
WO2006119665A1
WO2006119665A1 PCT/CN2005/000631 CN2005000631W WO2006119665A1 WO 2006119665 A1 WO2006119665 A1 WO 2006119665A1 CN 2005000631 W CN2005000631 W CN 2005000631W WO 2006119665 A1 WO2006119665 A1 WO 2006119665A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
switch
cylinder
gas
main
Prior art date
Application number
PCT/CN2005/000631
Other languages
English (en)
French (fr)
Inventor
Dongwei Deng
Qingchang Wang
Zhijun Li
Original Assignee
Shenzhen Yuanheng Electromagnetic Technologies Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shenzhen Yuanheng Electromagnetic Technologies Co., Ltd. filed Critical Shenzhen Yuanheng Electromagnetic Technologies Co., Ltd.
Priority to PCT/CN2005/000631 priority Critical patent/WO2006119665A1/zh
Priority to US11/913,846 priority patent/US7637406B2/en
Priority to CNU2005900000044U priority patent/CN2908061Y/zh
Publication of WO2006119665A1 publication Critical patent/WO2006119665A1/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
    • B25C1/00—Hand-held nailing tools; Nail feeding devices
    • B25C1/04—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure

Definitions

  • This invention relates to a nailer in a portable hand tool, and more particularly to a nailer driven by a liquid high pressure gas. Background technique
  • the role of the nailing machine is to drive the nail into the corresponding material for the purpose of fixing, connecting, and the like.
  • the working principle of the existing nailing machine mainly includes electric, pneumatic, combustion drive, explosion drive and other modes.
  • the electric nailing machine requires an external power source as the power, so it can only be used in a place with a power source, and a power cord needs to be connected.
  • the disadvantage is that it cannot be used in an unpowered place or in a power outage.
  • the traditional pneumatic nailing machine needs to supply high-pressure gas by the air compressor. Since the air compressor needs power supply to work, it can not be used in the place where there is no power or when the power is cut off, and the noise of the air compressor is especially working. Large, it will cause noise pollution.
  • the present invention solves the technical problems of inconvenient use, large noise, or safety hazard of the existing nailing machine, and provides a nail gun which is safer, more efficient, and more convenient to use.
  • the solution adopted by the present invention to solve the technical problem thereof is: constructing a handle including a body and a handle connected thereto, wherein the body is provided with a trigger mechanism, a striker for striking the nail to inject it, and a piston for pushing the striker a mechanism, and a switching mechanism controlled by the piston mechanism for releasing a driving gas thereto; wherein a coupling barrel is mounted in the handle;
  • An intake joint for connecting with a liquid high-pressure gas cylinder to introduce a high-pressure gas is disposed at a lower portion of the inner cavity of the coupling barrel;
  • a pressure reducing device connected to the air inlet joint for decompressing the introduced high pressure gas to maintain the air pressure in the upper portion of the coupling cylinder inner cavity in a predetermined range is disposed in a middle portion of the inner cavity of the coupling barrel;
  • the gas decompressed by the coupling cylinder can drive the piston mechanism to act through the shut-off mechanism, thereby pushing the striker to impact the nail at a high speed to inject it.
  • the body may include: a main body connected to the handle, and a switch chamber for mounting the switch mechanism; and a piston chamber disposed in the front portion of the main body for mounting the piston a piston barrel of the mechanism; and a nailing station mounted on the front of the cylinder for mating with a nailed nail.
  • the pressure reducing device preferably includes: a pressure reducing spring installed in an upper portion of the inner cavity of the coupling barrel, and a movable switch installed in the middle of the inner cavity of the coupling barrel and movable up and down, and mounted on the air inlet a pressure reducing sealant having a central through hole in the upper portion of the joint inner cavity, a sealing ball mounted at a lower opening of the through hole of the pressure reducing sealant center and sealing the ball from the lower portion of the movable switch a central through hole of the pressure reducing sealant, and a pressure reducing rod that can open/release the sealing ball as the movable switch moves up/down, and is used to place the sealing ball so that it is facing a lower portion of the through-hole opening of the pressure-relieving sealant and maintaining a ball seat at an appropriate distance; wherein an upper cross-sectional area of the movable switch is smaller than a lower cross-sectional area, and a pressure difference generated by the same air pressure on the upper and lower cross
  • the piston mechanism preferably includes a secondary piston movable forward and backward in a piston chamber in a central portion of the body, and a secondary spring that can push the secondary piston forward to fit in the piston cavity of the body a main cylinder tube partitioned into a piston inner chamber and a piston outer chamber and having a rear portion inserted into the sub piston, respectively disposed on the a main damping rubber and a secondary damping rubber at the front and rear ends of the main cylinder, and a main piston that is movable by gas to move back and forth in the main cylinder; wherein the main piston can be pushed forward by high pressure gas Moving, the striker is mounted on the primary piston and can be moved back and forth.
  • a return hole for connecting the inner cavity of the main cylinder and the outer cavity of the piston is provided on a side wall of the foremost end of the main cylinder; the front end of the main cylinder is on the side wall
  • An air outlet for connecting the inner cavity of the main cylinder and the outer cavity of the piston is further disposed at an appropriate distance, and a check valve is provided at the air outlet for allowing only gas to flow from the inner cavity of the main cylinder to the inner cavity of the piston;
  • An exhaust hole that communicates the inner cavity of the piston with the outside is disposed between the auxiliary damping rubber and the auxiliary switch.
  • the trigger mechanism preferably includes: a trigger for the operator to move, and a safety lever for interlocking with the trigger for controlling the secondary piston in the piston mechanism; wherein, the pair a lower portion of the piston is provided with a notch, the protruding end of the safety lever can be inserted into the notch to keep the secondary piston in a compressed state, and the protruding end of the safety lever can rotate with the trigger Disengaging the gap and releasing the secondary piston.
  • the triggering mechanism preferably further comprises: a nailing opening provided on the body, which can be retracted to be flush with the nailing opening after being pressed a safety pressure member, a safety transmission member connected to the safety pressure member, a connection plate movable forwardly and backwardly connected to the safety transmission member, a safety spring for resetting the connection plate forward, and a safety plate that moves backward to contact with the bayonet of the trigger, thereby rotating with the trigger; wherein the safety lever is connected to the safety plate through a guide post, and the insurance is The pull of the link is rotated so that its extended end is disengaged from the lower notch of the secondary piston, releasing the secondary piston.
  • the switch mechanism can be installed in the cavity of the rear portion of the body, and includes: the switch mechanism is mounted in a switch cavity at the rear of the body, and includes: a hammer plate and the pair a main switch fixed to the piston and movable back and forth within the switch cavity, sleeved outside the main switch, movable away from the main switch to disengage from a sub-switch located at a rear switch sealant thereof, and a switch spring that can push the sub-switch backward; wherein a main switch air hole is disposed at a middle rear portion of the main switch, and a sealant is disposed on both sides of the main switch air hole, and the main switch can be used
  • the secondary piston moves forward and drives Dissipating the sub-switch at a rear switch sealant thereof, so that gas in the coupling barrel can enter the main switch through the opening of the switch sealant and the main switch air hole, and then sent to the A piston bore to push the primary piston.
  • an internal thread for screwing the gas cylinder is provided at a lower opening of the coupling barrel; and a high pressure gas is introduced at a lower portion of the air inlet joint to be connected to the gas cylinder.
  • a cylinder for containing a liquid high pressure gas at the opening of which is provided a cylinder connector, in which a cylinder rod movable up and down is mounted, in the lower portion of the cylinder rod a cylinder sealant that can seal/open the gas port of the cylinder connector as the cylinder rod moves up/down;
  • An external thread is disposed on an outer diameter of the gas cylinder joint, and the gas cylinder is screwed to a lower portion of the coupling cylinder by the cooperation of the external thread and the inner thread;
  • the hollow protruding rod can be placed on the intake rod of the cylinder to be moved downward, thereby opening the cylinder sealant to introduce high pressure gas in the cylinder into the coupling barrel .
  • the present invention may also include a magazine that can hold a plurality of mosquito nails, straight nails, code nails, or cement nails.
  • the nailing machine of the present invention uses liquid high-pressure gas as a power source, does not require a bulky air compressor, does not require a power source, can be used in various places, and is very convenient, safe, and effective in use.
  • the liquid high-pressure gas can use an inert gas that does not burn or combust, and since it does not require an air compressor, the noise when using the nailer is very small, and noise pollution is not caused.
  • FIG. 1 is a schematic structural view of a nailing machine in a preferred embodiment when it is in an unused state
  • FIG. 2 is a schematic structural view of the nailing machine of the nailing machine shown in FIG. 1 when it is pressed against a working member;
  • FIG. 3 is a partial structural schematic view of the trigger mechanism of the nailing machine shown in FIG. 1 at the moment of firing; 4 is a partial structural schematic view of the switching mechanism of the nailing machine shown in FIG. 1 at the moment of firing;
  • FIG. 5 is a schematic structural view of the trigger mechanism of the nailing machine shown in Figure 1;
  • FIG 6 is an enlarged schematic view of the safety lever shown in Figure 4.
  • the nailing machine is mainly composed of a body and a handle 50.
  • the body is in turn composed of a body 11, a cylinder, and a nailing station that are sequentially connected.
  • a piston chamber for mounting a piston mechanism is disposed in the piston barrel
  • a switch chamber for installing a switch mechanism is disposed in the main body 11
  • a nail for mounting the nail is disposed at a lower portion of the nail insertion table (six in the figure) The vertical line is not drawn completely), where:
  • the piston mechanism mainly comprises: an outer cylinder 2, a secondary piston 7, a secondary spring 8, a main piston 9, a main damping rubber 3, a secondary damping rubber 10, a main cylinder 5, and a check valve 6 provided on the main cylinder.
  • the inside of the main cylinder 5 is a piston inner cavity
  • the outer part is a piston outer cavity.
  • the switch mechanism mainly includes: a hammer plate 20, a main switch 19, a sub-switch 16, a switch spring 15, and a switch sealant 17.
  • the trigger mechanism mainly includes: a trigger 38, a trigger spring 39, a guide post 40, a safety joint 41, a safety trigger 42, a connecting plate 43, an insurance spring 44, a safety transmission member 46, and a safety pressure member 50.
  • the pressure reducing device mainly includes a coupling barrel 25, a pressure reducing spring 24, a movable switch 26, a pressure reducing plunger 27, a pressure reducing sealant 29, a sealing ball 30, a ball seat 31, and an air inlet joint 32.
  • the gas cylinder section mainly includes: a gas cylinder 37, a gas cylinder joint 34, and a gas cylinder sealant 36.
  • a gas cylinder 37 containing a liquid high-pressure gas (carbon dioxide and nitrogen gas, and an inert gas such as argon gas may be used) is first screwed to the lower end of the coupling barrel 25 in the handle 50, as a gas cylinder.
  • a liquid high-pressure gas carbon dioxide and nitrogen gas, and an inert gas such as argon gas may be used
  • the mouth of the 37 moves upward to the lower portion of the air inlet connector 32 and continues to be screwed in, the hollow protrusion at the lower portion of the air inlet connector 32 pushes the cylinder rod 35 in the cylinder connector 34 to lower the cylinder rod 35 downward.
  • the movement causes the cylinder sealant 36 on the cylinder rod 35 to move downward.
  • the lower port of the joint 34 allows the high-pressure gas in the gas cylinder 37 to flow upward therefrom, and is sent to the decompression device in the coupling cylinder 25 via the intake fitting 32, and is subjected to a reduced pressure treatment by a decompression device.
  • the decompressed high-pressure gas can be sent to the switch cavity at the rear of the main body 11 to prepare for the nail.
  • the safety pressing member 51 of the nailing device of the nailing machine When the nail is shot, the safety pressing member 51 of the nailing device of the nailing machine is pressed against the working part, and the triggering operation is performed after the trigger 38 is pulled.
  • the connecting plate 43 When the nailing machine is not pressed against the working part, under the action of the safety spring 44, the connecting plate 43 is at the leftmost side, and the safety joint plate 41 connected thereto is also at the leftmost position, and The trigger 38 is a distance away from the control of the trigger 38. At this time, the trigger 38 does not affect the safety plate 41, and the safety plate 42 cannot be moved, and the nailing machine is in an insured state that cannot be fired.
  • the safety transmitting member 46 pushes the connecting plate 43 to move to the right against the elastic force of the safety spring 43, thereby driving the safety joint plate 41 to the right.
  • the trigger 38 will rotate counterclockwise, and the safety link 41 will be rotated clockwise, thereby driving the guide post 40 on the safety plate 41 to move downward, and the guide post 40 is further
  • the safety trigger 42 is rotated clockwise.
  • the safety lever 42 is moved to a certain position, the upper right projecting end is disengaged from the lower gap of the secondary piston 7.
  • the secondary piston 7 moves forward (i.e., to the left) at a high speed under the elastic force of the compressed secondary spring 8, thereby driving the main switch 19 fixed by the hammer plate 20 and the secondary piston 7 to move forward. .
  • the main switch 19 As shown in Fig. 4, after the main switch 19 is moved forward to a certain distance, it will hit the sub-switch 16, and the sub-switch 16 will also be moved forward.
  • the main switch 19 When the main switch 19 is moved to the position of the auxiliary damping rubber 10, it can form a seal with the auxiliary damping rubber.
  • the rear port of the sub-switch 16 will be separated from the switch sealant 17 to form an air outlet, as indicated by the direction of the arrow in FIG. 4, at this time, the high-pressure gas entering the switch cavity of the main body 11 by the coupling barrel 25 can pass through the main switch.
  • the air hole and the formed air outlet enter the inner cavity of the main switch 19 and are sent to the main cylinder 5.
  • the high-pressure gas in the main cylinder 5 can push the main piston 9 forward, thereby driving the striker 1 on the main piston 9 to move forward, and finally pushing the nail in the nail boring 45 forward to complete the nailing action.
  • the chamber of the main cylinder 5 and the sub-switch 16 on the right side of the main piston 9 are connected to the atmosphere, so that the high pressure on the right side of the main piston 9
  • the gas can be discharged to the outside through the vent hole 52.
  • a portion of the high-pressure gas that has flowed from the return air hole (near the main damping rubber 3) of the main cylinder 5 to the outer chamber of the piston flows from the return hole at the front end of the main cylinder 5 to the front end of the main piston 9.
  • the pressure reduction process is implemented by the pressure reducing device in the coupling cylinder 25, and about 45 standard atmospheric pressures after the pressure reduction, the principle of the pressure reduction is as follows.
  • the switch 26 is moved to the upper limit position.
  • the pressure reducing rod is completely contracted into the center hole of the pressure reducing sealant 29, thereby releasing the sealing ball 30, and the sealing ball 30 is closely attached to the lower portion of the pressure reducing sealant 29 under the action of the high pressure gas to form
  • the seal is such that the high pressure gas in the cylinder 37 can no longer flow into the movable switch 26.
  • the pressure in the movable switch 26 before the cylinder 37 is attached and before the nail is unpinned can be maintained at a desired predetermined value, which is 45 standard atmospheric pressure in this embodiment.
  • F T ⁇ F +F ⁇ will occur, so that the movable switch 26 will move downward, and the pressure reducing rod 27 is driven to open the sealing ball 30.
  • the high pressure gas in the gas cylinder 37 can again flow into the movable switch 26, and when the gas pressure rises so that the internal gas pressure reaches a predetermined value, the sealing ball 30 closes the opening of the lower portion of the pressure reducing sealant 29.
  • the above structure allows the pressure in the movable switch 26 to be maintained to a desired predetermined value, thereby realizing a decompression function to ensure that the gas pressure in the body switching chamber communicating with the movable switch 26 is a predetermined value.
  • the nailing machine utilizes high liquid high pressure gas as a power source, and its advantages are as follows -
  • This pneumatic nailing machine does not require a power supply, and can work in the absence of power in the field or in the event of a power outage.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

使用液态高压气驱动的射钉机 技术领域
本发明涉及便携式手动工具中的射钉机，更具体地说，涉及一种使用液态 高压气驱动的射钉机。 背景技术
射钉机的作用是将钉子打入到相应的材料中， 以实现固定、 连接等目的。 现有射钉机的工作原理主要有电动、 气动、 燃烧驱动、 爆炸驱动等模式。
其中， 电动射钉机需要外部电源作为动力， 所以只能用于有电源的场所， 而且需要连接一根电源线， 其缺点是在未通电的场所或停电时都无法使用。
而传统气动射钉机则需要由空气压縮机为其提供高压气，由于空气压缩机 需要电源才能工作，所以在未通电的场所或停电时同样无法使用，而且空气压 缩机工作时的噪声特别大， 会造成噪声污染。
在专利号为 ZL200320118911.1的实用新型专利中， 公开了一种通过在内 燃室燃烧气体来驱动活塞动作从而实现射钉目的的射钉机。其缺点是需要使用 可燃气体， 安全隐患较大 (例如可能引起火灾、 爆炸)， 而且成本较高。
在专利号为 ZL 94104976.0的发明专利中， 公开了一种通过火药爆炸的动 力来驱动活塞动作从而实现射钉目的的射钉机， 其缺点是需要使用爆炸物一 火药， 安全隐患更大， 而且可能成为一种非法武器。 发明内容
针对现有技术的上述缺陷，本发明要解决现有射钉机使用不便、噪声较大、 或存在安全隐患等技术问题， 提供一种更安全、 高效、 且便于使用的射钉机。
本发明解决其技术问题所采用的方案是： 构造包括机体和与之连接的手 柄， 所述机体中装有扳机机构、用于撞击钉子以将其射出的撞针、用于推动所 述撞针的活塞机构、以及受所述活塞机构控制用于向其释放驱动气体的开关机 构； 其中， 在所述手柄中装有一个联接筒；
在所述联接筒内腔的下部装有用于与液态高压气气瓶连接以引入高压气 体的进气接头；
在所述联接筒内腔的中部装有与所述进气接头连接、用于对引入的高压气 体进行减压处理以使所述联接筒内腔上部的气压维持在预定范围的减压装置； 在所述扳机机构的控制下，经所述联接筒减压处理后的气体可经所述幵关 机构驱动所述活塞机构动作、 进而推动所述撞针高速撞击所述钉子以将其射 出。 本发明中，所述机体可包括： 与所述手柄连接、 内设开关腔用于装设所述 开关机构的主体；装于所述主体前部、内设活塞腔用于装设所述活塞机构的活 塞筒；以及，装于所述活塞筒前部、用于与装有钉子的钉匣配合连接的射钉台。 本发明中，所述减压装置最好包括:装在所述联接筒内腔上部的减压弹簧， 装在所述联接筒内腔中部并可上下移动的活动开关，装在所述进气接头内腔上 部并带有中心通孔的减压密封胶，装在所述减压密封胶中心通孔的下部开口处 并可将其封住的密封球，由所述活动开关下部伸入到所述减压密封胶的中心通 孔、并可随所述活动开关上 /下移动而顶开 /释放所述密封球的减压顶杆，以及， 用于放置所述密封球使之正对所述减压密封胶中心通孔的下部开口并保持适 当距离的球座； 其中， 所述活动开关的上截面面积小于下截面面积， 相同气压 在所述上、下截面上产生的压力差可压缩所述减压弹簧而使所述活动开关向上 移动，进而带动所述减压顶杆缩回到所述减压密封胶的中心通孔内，并在所述 压力差等于被压缩后的减压弹簧弹力时完全释放所述密封球，从而使所述密封 球可将所述减压密封胶中心通孔的下部开口密封住。 本发明中，所述活塞机构最好包括：可在机体中部的活塞腔中前后移动的 副活塞，可将所述副活塞向前推动的副弹簧，装在所述机体的活塞腔内将其分 隔为活塞内腔和活塞外腔、且后部插于所述副活塞中的主缸筒，分别设于所述 主缸筒的前后端的主减震胶和副减震胶， 以及，可受气体推动而在所述主缸筒 内前后移动的主活塞； 其中， 所述主活塞可以高压气体的推动下向前移动， 所 述撞针装于所述主活塞上， 可随之前后移动。
在上述活塞机构中，最好在所述主缸筒最前端的侧壁上设有可将主缸筒内 腔与其活塞外腔连通的回气孔；在所述主缸筒的侧壁上距前端适当距离处还设 有可将主缸筒内腔与其活塞外腔连通的出气孔，在所述出气孔处设有只允许气 体从主缸筒内腔向活塞内腔流动的单向阀；在所述副减震胶与所述副开关之间 设有将活塞内腔与外部连通的排气孔。 本发明中， 所述扳机机构最好包括： 供操作者扳动的扳机， 以及， 与所述 扳机联动、用于控制所述活塞机构中的副活塞的保险扳杆； 其中， 在所述副活 塞的下部设有一个缺口，所述保险扳杆的伸出端可插入所述缺口而使所述副活 塞保持在被压缩状态，所述保险扳杆的伸出端可随所述扳机转动而脱离所述缺 口进而释放所述副活塞。
为保证所述射钉机在紧压工作部件时才能射钉， 所述扳机机构最好还包 括： 设于所述机体的射钉口、受压后可缩回到与射钉口平齐的保险压件， 与所 述保险压件连接的保险传递件， 与所述保险传递件连接可前后移动的连接板， 用于将所述连接板向前复位的保险弹簧， 以及，可随所述连接板向后移动而与 所述扳机的卡口接触、从而随所述扳机转动的保险联板； 其中， 所述保险扳杆 通过导向柱与所述保险联板连接、并可在所述保险联板的拉动下转动，从而使 其伸出端脱离所述副活塞的下部缺口， 释放所述副活塞。 本发明中， 所述开关机构可装在所述机体后部的幵关腔内， 包括： 所述开 关机构装在所述机体后部的开关腔内，包括：通过击锤板与所述副活塞固定在 一起、可在所述开关腔内前后移动的主开关， 套在所述主开关外部、可随所述 主开关向前移动而脱离位于其后部开关密封胶的副开关， 以及，可将所述副开 关向后推动的开关弹簧； 其中， 在所述主开关的中后部设有主开关气孔， 在所 述主开关气孔两侧设有密封胶，所述主开关可随所述副活塞向前移动，并带动 所述副开关脱离位于其后部开关密封胶，从而使所述联接筒中的气体可经所述 开关密封胶处的开口及所述主开关气孔而进入所述主开关内部，进而送到所述 活塞内腔以推动所述主活塞。 本发明中，最好在所述联接筒的下部开口处设有用于拧装所述气瓶的内螺 纹;在所述进气接头的下部设有一个可与所述气瓶连接而引入高压气体的中空 顶杆；
还包括用于装液态高压气的气瓶，在所述气瓶的开口处装有气瓶接头，在 所述气瓶接头内装有可上下移动的气瓶杆，在所述气瓶杆的下部装有可随所述 气瓶杆上 /下移动而密封 /打开所述气瓶接头内气口的气瓶密封胶；
在所述气瓶接头的外径上设有外螺紋，所述气瓶可通过所述外螺紋与内螺 紋的配合而拧装在所述联接筒的下部；
其中，所述中空突杆可顶在已装好气瓶的进气杆上而使之向下移动，从而 打开所述气瓶密封胶将所述气瓶中的高压气体引入到所述联接筒内。
本发明还可包括可放置多颗蚊钉、 直钉、 码钉、 或者水泥钉的钉匣。 由上述方案可知，本发明的射钉机使用液态高压气体作动力源，不需要笨 重的空气压縮机， 也不需要电源， 可用于各种场所， 而且使用起来非常方便、 安全、髙效。其中的液态高压气体可使用不会燃烧也不会助燃的惰性气体， 由 于其不需要空气压缩机，所以使用本射钉机时的噪声非常小，不会造成噪声污 染。 ， 附图说明
下面将结合附图及实施例对本发明作进一步说明， 附图中：
图 1是发明一个优选实施例中的射钉机处于未使用状态时的结构示意图； 图 2是图 1所示射钉机的机口压在工作部件上处于待击发状态上时的结构 示意图；
图 3是图 1所示射钉机的扳机机构在击发瞬间的局部结构示意图； 图 4是图 1所示射钉机的开关机构在击发瞬间的局部结构示意图;
图 5是图 1所示射钉机的扳机机构的结构示意图；
图 6中是 4中所示保险扳杆的放大示意图。 具体实施方式
本发明的一个优选实施例如图 1至图 6所示，下面将参照各附图进行详细 说明。 从图中可以看出， 该射钉机主要由机体和手柄 50构成。 机体又由依次 连接的主体 11、 活塞筒、 和射钉台构成。 在活塞筒中设有用于装设活塞机构 的活塞腔， 在主体 11中设有用于装设开关机构的开关腔， 在射钉台的下部则 装有用于装设钉子的钉匣 (图中为六条竖线未画完全)， 其中：
活塞机构主要包括： 外筒 2、副活塞 7、副弹簧 8、主活塞 9、主减震胶 3、 副减震胶 10、 主缸筒 5、 以及设于主缸筒上的单向阀 6; 其中， 主缸筒 5内部 为活塞内腔， 外部为活塞外腔。
开关机构主要包括： 击锤板 20、主开关 19、 副开关 16、 开关弹簧 15、 以 及开关密封胶 17。
扳机机构主要包括： 扳机 38、扳机弹簧 39、 导向柱 40、 保险联板 41、保 险扳杆 42、 连接板 43、 保险弹簧 44、 保险传递件 46、 以及保险压件 50。
减压装置主要包括：联接筒 25、减压弹簧 24、活动开关 26、减压顶杆 27、 减压密封胶 29、 密封球 30、 球座 31、 以及进气接头 32。
气瓶部分主要包括： 气瓶 37、 气瓶接头 34、 以及气瓶密封胶 36。
一、 工作过程
1、 装接气瓶
如图 1所示， 先把装有液态高压气 (可使用二氧化碳和氮气， 还可使用氩 气等惰性气体：)的气瓶 37拧在手柄 50内的联接筒 25的下端螺紋， 当气瓶 37 的口部向上运动到进气接头 32的下部、并再继续拧进时，进气接头 32下部的 中空突杆会顶动气瓶接头 34内的气瓶杆 35， 使气瓶杆 35向下运动， 从而带 动气瓶杆 35上的气瓶密封胶 36向下运动。 此时， 气瓶密封胶 36会脱离气瓶 接头 34的下口， 使气瓶 37内的高压气可从此处向上流动， 再经进气接头 32 送到联接筒 25内的减压装置， 由减压装置对其进行减压处理。 经过减压后的 高压气可被送到主体 11后部的开关腔内， 为射钉做好准备。
2、 射钉
射钉时， 需把射钉机射钉口的保险压件 51紧压在工作部件上， 扣动扳机 38后才能完成击发工作。 如图 1所示， 当射钉机未压紧在工作部件上时， 在 保险弹簧 44作用下， 连接板 43处于最左边， 与之连接的保险联板 41也处于 最靠左边的位置， 与扳机 38有一段距离， 从而可脱离扳机 38的控制。此时扳 动扳机 38不会影响到保险联板 41， 也就不能使保险板杆 42发生运动， 射钉 机处于不能击发的保险状态。
如图 2所示， 当射钉机压紧在工作部件上时， 保险传递件 46会推动连接 板 43克服保险弹簧 43的弹力而向右移动， 进而带动保险联板 41向右移动。 如图 3所示， 此时如果扳动扳机 38, 扳机 38会逆时针转动， 并带动保险联板 41顺时针转动， 进而带动保险联板 41上的导向柱 40向下运动， 导向柱 40再 带动保险扳杆 42顺时针转动， 当保险扳杆 42运动到一定位置时，其右上伸出 端会从副活塞 7的下部缺口中脱离。 此时， 副活塞 7会在压缩后的副弹簧 8 的弹力作用下， 高速向前 (即向左)运动， 从而带动通过击锤板 20与副活塞 7 固定在一起的主开关 19向前运动。
如图 4所示， 主开关 19向前运动到一定距离后， 会撞击到副开关 16， 并 带动副开关 16也跟着向前运动。当主开关 19运动到副减震胶 10所在位置时， 可与副减震胶形成密封。同时，副开关 16的后端口会脱离开关密封胶 17而形 成出气口， 如图 4中箭头方向所示， 此时， 由联接筒 25进入主体 11的开关腔 内的高压气体可经主开关上的气孔和所形成的出气口而进入主开关 19内腔， 再送至主缸筒 5内。主缸筒 5内的高压气可推动主活塞 9向前运动，从而带动 主活塞 9上的撞针 1向前运动， 最终可推动钉匣 45内的射钉向前运动， 完成 一次射钉动作。
3、 上膛
当主活塞 9运动到其前端超过主缸筒 5上的出气孔 (出气孔上装有单向阀 6)后， 主缸筒 5内的高压气会经该出气孔流入活塞外腔， 此时， 活塞外腔的高 压气可克服副弹簧 8的弹力，推动已运动到前端的副活塞 7向后运动， 当其回 复到达图 1所示位置时，保险扳杆 42的伸出端会在扳机弹簧 39的作用力下向 上运动并伸入副活塞 7的下部缺口中， 使副活塞不能再向前运动， 形成上膛， 为下次射钉做好准备。
4、 回位
(1) 副开关回位
当副活塞 7运动到后端时，会带动与之连在一起的主开关 19向后运动， 此 时， 开关弹簧 15的作用力会推动副开关 16向后运动而回位， 使副开关： 16再 次与开关密封胶 17形成密封， 使主体 11的开关腔内的高压气体密封。
(2)、 主活塞回位
当主开关 19因向后运动而脱离副减震胶 10时，主活塞 9右侧的主缸筒 5 腔室和副开关 16的腔室会与大气接通， 从而使主活塞 9右侧的高压气体可经 排气孔 52排出到外部。另一方面， 之前从主缸筒 5上的回气孔 (位于主减震胶 3 附近)流入活塞外腔的高压气体的一部份会从主缸筒 5前端的回气孔流入主 活塞 9的前端， 由于此时副开关 16已回位， 主活塞 9后端的活塞腔是与大气 接通的，所以会在主活塞 9的前后形成压力差， 从而使主活塞 9向后运动， 完 成回位动作。 二. 减压原理
由于液态高庄气的压力太高， 通常其临界压力为约 72.8个标准大气压， 而且其压力随温度变化较大，为了保障射钉机稳定工作，输入的液态高压气必 须经减压后才能使用， 本实施例中， 是由联接筒 25内的减压装置来实现减压 处理的， 减压后约 45个标准大气压， 其减压原理如下。
当未接通气瓶 37时， 联接筒内是无高压气的， 此时，在减压弹簧 24的作 用力下，活动开关 26处于下限位置，紧配合在其下部的减压顶杆 27也处于下 限位置。 此时， 顶在减压顶杆 27下部的密封球 30会脱离减压密封胶 29， 从 而将此处的开口打开， 使气体能从此处流向上流动， 其中的球座 31用于确保 密封球 31与减压密封胶之间保持适当距离。
当接上气瓶 37后， 气体经过虑罩 33、 密封球 30处形成的开口而流入活 动开关 26的内腔， 由于活动开关 26的上下部的截面积不相等 (本实施例中为 上小下大)， 而两端是连通， 所以其气体压强相等为 P， 随着高压气体注入， 压强上升， 此时：
上截面受的压力 F ±=PS上，
下截面受的压力 F T=PS下，
Ά S ±<S下，
所以有 F T>F上。
因此， 活动开关 26会向上运动而压缩减压弹簧 24，相应地， 减压弹簧 24 会产生一个作用在活动开关 26上截面的力 F纏， 当 F下 =F ^+F j:时， 活动开 关 26运动到上限位置。此时，减压顶杆完全縮收到减压密封胶 29的中心孔内， 从而释放了密封球 30， 密封球 30在高压气的作用下会紧贴在减压密封胶 29 的下部， 形成密封， 使得气瓶 37内的高压气不能再流入活动开关 26内。通过 上述机构，可使接上气瓶 37且未射钉之前的活动开关内 26内的压强维持一个 所需的预定值，本实施例中为 45个标准大气压。当活动开关 26内的气压因射 钉动作而下降后， 会出现 F T<F +F ±， 从而使得活动开关 26会向下运动， 并带动减压顶杆 27顶开密封球 30， 此时， 气瓶 37内的高压气体又可会再次 流入活动开关 26内， 当气体压强上升使得其内部气体压强达到预定值时， 密 封球 30又会将减压密封胶 29的下部的开口关闭。可见，上述结构使得活动开 关 26内的压强可维持到一个所需的预定值， 从而实现减压功能， 保证与活动 开关 26连通的机体开关腔内的气体压强为预定值。 三. 本实施例的射钉机的优点
由前述实施例可知，本射钉机利用高液态高压气体作为动力源，其优点如 下-
1、 射钉力量调节范围大： 用液态高压气体作动力源， 使用范围广， 不仅 可以设计蚊钉机、直钉机、码钉机等力量较小的钉机， 还可以设计成力量较大 的可将钉直接射入钢筋混凝土墙体内的水泥钉机。
2、 流动作业性能良好： 这种射钉机不需要笨重的空气压缩机， 无风管的 累赘； 流动性能良好， 还可以用高空作业。
3、 无需电源： 本气动射钉机不需要电源， 在野外无电源或在停电的情况 下仍能作业。
4、 防爆： 本射钉机使用惰性气体作动力源， 所使用的气体不会燃烧， 也 不会助燃， 具有防爆效果， 而且在使用过程中也不会发热。
5、 噪声污染小： 由于不需要空气压缩机， 所以使用本射钉机时的噪声非 常小， 不会造成噪声污染。

Claims

权 利 要 求
1、 一种使用液态高压气驱动的射钉机， 包括机体和与之连接的手柄， 所 述机体中装有扳机机构、用于撞击钉子以将其射出的撞针、用于推动所述撞针 的活塞机构、以及受所述活塞机构控制用于向其释放驱动气体的开关机构；其 特征在于，
在所述手柄中装有一个联接筒；
在所述联接筒内腔的下部装有用于与液态高压气气瓶连接以引入高压气 体的进气接头；
在所述联接筒内腔的中部装有与所述进气接头连接、用于对引入的高压气 体进行减压处理以使所述联接筒内腔上部的气压维持在预定范围的减压装置； 在所述扳机机构的控制下，经所述联接筒减压处理后的气体可经所述开关 机构驱动所述活塞机构动作、 进而推动所述撞针高速撞击所述钉子以将其射 出。
2、 根据权利要求 1所述的使用液态高压气驱动的射钉机， 其特征在于， 所述机体部分包括：
与所述手柄连接、 内设开关腔用于装设所述开关机构的主体；
装于所述主体前部、 内设活塞腔用于装设所述活塞机构的活塞筒； 以及， 装于所述活塞筒前部、 用于与装有钉子的钉匣配合连接的射钉台。
3、 根据权利要求 1所述的使用液态高压气驱动的射钉机， 其特征在于， 所述减压装置包括 - 装在所述联接筒内腔上部的减压弹簧，
装在所述联接筒内腔中部并可上下移动的活动开关，
装在所述进气接头内腔上部并带有中心通孔的减压密封胶，
装在所述减压密封胶中心通孔的下部开口处并可将其封住的密封球， 由所述活动开关下部伸入到所述减压密封胶的中心通孔、并可随所述活动 开关上 /下移动而顶开 /释放所述密封球的减压顶杆，
以及，用于放置所述密封球使之正对所述减压密封胶中心通孔的下部开口 并保持适当距离的球座；
其中， 所述活动开关的上截面面积小于下截面面积， 相同气压在所述上、 下截面上产生的压力差可压缩所述减压弹簧而使所述活动开关向上移动；进而 带动所述减压顶杆縮回到所述减压密封胶的中心通孔内，并在所述压力差等于 被压缩后的减压弹簧弹力时完全释放所述密封球，从而使所述密封球可将所述 减压密封胶中心通孔的下部开口密封住。
4、 根据权利要求 1-3中任一项所述的使用液态高压气驱动的射钉机， 其 特征在于，
所述活塞机构包括：
可在机体中部的活塞腔中前后移动的副活塞，
可将所述副活塞向前推动的副弹簧，
装在所述机体的活塞腔内将其分隔为活塞内腔和活塞外腔、且后部插于所 述副活塞中的主缸筒，
分别设于所述主缸筒的前后端的主减震胶和副减震胶，
以及， 可受气体推动而在所述主缸筒内前后移动的主活塞；
其中，所述主活塞可以髙压气体的推动下向前移动，所述撞针装于所述主 活塞上， 可随之前后移动。
5、 根据权利要求 4所述的使用液态高压气驱动的射钉机， 其特征在于， 在所述主缸筒最前端的侧壁上设有可将主缸筒内腔与其活塞外腔连通的 回气孔；
在所述主缸筒的侧壁上距前端适当距离处还设有可将主缸筒内腔与其活 塞外腔连通的出气孔，在所述出气孔处设有只允许气体从主缸筒内腔向活塞内 腔流动的单向阀；
在所述副减震胶与所述副开关之间设有将活塞内腔与外部连通的排气孔。
6、 根据权利要求 4所述的使用液态高压气驱动的射钉机， 其特征在于， 所述扳机机构包括：
供操作者扳动的扳机，
以及， 与所述扳机联动、 用于控制所述活塞机构中的副活塞的保险扳杆； 其中，在所述副活塞的下部设有一个缺口，所述保险扳杆的伸出端可插入 所述缺口而使所述副活塞保持在被压缩状态，所述保险扳杆的伸出端可随所述 扳机转动而脱离所述缺口进而释放所述副活塞。
7、 根据权利要求 6所述的使用液态高压气驱动的射钉机， 其特征在于， 所述扳机机构还包括：
设于所述机体的射钉口、 受压后可縮回到与射钉口平齐的保险压件， 与所述保险压件连接的保险传递件，
与所述保险传递件连接可前后移动的连接板，
用于将所述连接板向前复位的保险弹簧，
以及，可随所述连接板向后移动而与所述扳机的卡口接触、从而随所述扳 机转动的保险联板；
其中，所述保险扳杆通过导向柱与所述保险联板连接、并可在所述保险联 板的拉动下转动，从而使其伸出端脱离所述副活塞的下部缺口，释放所述副活 塞。
8、 根据权利要求 4所述的使用液态高压气驱动的射钉机， 其特征在于， 所述开关机构装在所述机体后部的开关腔内， 包括- 通过击锤板与所述副活塞固定在一起、可在所述开关腔内前后移动的主开 关，
套在所述主开关外部、可随所述主开关向前移动而脱离位于其后部开关密 封胶的副开关，
以及， 可将所述副开关向后推动的开关弹簧； 其中，在所述主开关的中后部设有主开关气孔，在所述主开关气孔两侧设 有密封胶，所述主开关可随所述副活塞向前移动，并带动所述副开关脱离位于 其后部开关密封胶，从而使所述联接筒中的气体可经所述开关密封胶处的开口 及所述主开关气孔而进入所述主开关内部，进而送到所述活塞内腔以推动所述 主活塞。
9、 根据权利要求 1-3中任一项所述的使用液态高压气驱动的射钉机， 其 特征在于，在所述联接筒的下部开口处设有用于拧装所述气瓶的内螺纹；在所 述进气接头的下部设有一个可与所述气瓶连接而弓 I入高压气体的中空顶杆； 还包括用于装液态高压气的气瓶，在所述气瓶的开口处装有气瓶接头，在 所述气瓶接头内装有可上下移动的气瓶杆，在所述气瓶杆的下部装有可随所述 气瓶杆上 /下移动而密封 /打开所述气瓶接头内气口的气瓶密封胶；
在所述气瓶接头的外径上设有外螺紋，所述气瓶可通过所述外螺纹与内螺 紋的配合而拧装在所述联接筒的下部；
其中，所述中空突杆可顶在已装好气瓶的进气杆上而使之向下移动，从而 打开所述气瓶密封胶将所述气瓶中的高压气体引入到所述联接筒内。
10、根据权利要求 1-3中任一项所述的使用液态高压气驱动的射钉机，其 特征在于， 还包括可放置多颗蚊钉、 直钉、 码钉、 或者水泥钉的钉匣。
PCT/CN2005/000631 2005-05-08 2005-05-08 A nailing machine driven by liquid pressurized gas WO2006119665A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/CN2005/000631 WO2006119665A1 (en) 2005-05-08 2005-05-08 A nailing machine driven by liquid pressurized gas
US11/913,846 US7637406B2 (en) 2005-05-08 2005-05-08 Nailing machine driven by pressurized gas in liquid state
CNU2005900000044U CN2908061Y (zh) 2005-05-08 2005-05-08 使用液态高压气驱动的射钉机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2005/000631 WO2006119665A1 (en) 2005-05-08 2005-05-08 A nailing machine driven by liquid pressurized gas

Publications (1)

Publication Number Publication Date
WO2006119665A1 true WO2006119665A1 (en) 2006-11-16

Family

ID=37396171

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/000631 WO2006119665A1 (en) 2005-05-08 2005-05-08 A nailing machine driven by liquid pressurized gas

Country Status (3)

Country Link
US (1) US7637406B2 (zh)
CN (1) CN2908061Y (zh)
WO (1) WO2006119665A1 (zh)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8505798B2 (en) * 2005-05-12 2013-08-13 Stanley Fastening Systems, L.P. Fastener driving device
US7556183B1 (en) * 2008-02-04 2009-07-07 De Poan Pneumatic Corp. Control device for nail hitting of pneumatic nail guns
CN102271873B (zh) 2008-12-24 2014-01-08 全球力量Ip有限公司 可调整的剂量室
US9463560B2 (en) * 2011-10-03 2016-10-11 Illinois Tool Works Inc. Portable pressurized power source for fastener driving tool
US9770818B2 (en) 2011-10-03 2017-09-26 Illinois Tool Works Inc. Fastener driving tool with portable pressurized power source
JP5839341B2 (ja) * 2012-01-31 2016-01-06 日立工機株式会社 打込機
WO2013114867A2 (en) * 2012-01-31 2013-08-08 Hitachi Koki Co., Ltd. Driving tool
JP5839342B2 (ja) * 2012-03-21 2016-01-06 日立工機株式会社 打込機
EP2633956B1 (en) * 2012-03-02 2016-03-02 Stanley Fastening Systems L.P. Fastening tool with dual pneumatic handle
JP5889703B2 (ja) * 2012-04-12 2016-03-22 株式会社マキタ エア打込み工具
CN105269527B (zh) * 2014-07-24 2017-06-16 台州市大江实业有限公司 一种蒸汽射钉枪
FR3046741B1 (fr) * 2016-01-20 2018-01-05 Illinois Tool Works Inc Outil de fixation a gaz
CN107263400B (zh) * 2017-07-26 2023-05-02 四川南山射钉紧固器材有限公司 使用方便的电缆穿孔专用射钉器
CN113172584B (zh) * 2020-11-06 2023-07-14 台州市钉霸电动工具有限公司 一种打钉枪

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074547A1 (de) * 1981-09-10 1983-03-23 Suhner Inter Trade AG Druckluft-Handwerkzeugmaschine mit einem Handgriff
JPH0839454A (ja) * 1994-07-29 1996-02-13 Makita Corp エア釘打機のトリガバルブ
CN1464820A (zh) * 2001-06-28 2003-12-31 普里本纳·韦尔弗里德·博恩曼 压力介质驱动的推出装置
CN2709119Y (zh) * 2004-05-24 2005-07-13 王雷 Co2气动射钉枪

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673069A (en) * 1949-12-12 1954-03-23 Phillips Petroleum Co Hydrogen peroxide drilling tool
US4936282A (en) * 1988-12-09 1990-06-26 Dobbins Jerrold M Gas powered gun
US5494024A (en) * 1992-11-06 1996-02-27 Scott; Eric Paint ball gun and assemblies therefor
US5542406A (en) * 1994-08-22 1996-08-06 Oneto; Michael A. Retractable bolt assembly for compressed gas powered gun
JP3152131B2 (ja) * 1995-11-02 2001-04-03 日立工機株式会社 電池工具
US6095392A (en) * 1998-02-13 2000-08-01 Porta-Nails, Inc. Pneumatic nailer including safety trigger for disabling/enabling operation
US6543475B2 (en) * 2000-04-27 2003-04-08 Daniel H. Colby Pneumatic valve and regulator apparatus and method for regulating compressed air therefor
US6739323B2 (en) * 2002-01-04 2004-05-25 Tippmann Pneumatics, Inc. Feed mechanism for paint ball gun
US6796387B1 (en) * 2003-03-19 2004-09-28 Lund And Company Llc Power driven equipment utilizing hydrogen from the electrolysis of water
US7150139B1 (en) * 2003-03-19 2006-12-19 Lund And Company Invention, L.L.C. Lawnmower utilizing hydrogen from the electrolysis of water
JP2005288608A (ja) * 2004-03-31 2005-10-20 Jpf Works Kk 携帯式ファスナー打ち込み工具
JP5055775B2 (ja) * 2006-02-03 2012-10-24 マックス株式会社 釘打機
US8276798B2 (en) * 2007-06-21 2012-10-02 Illinois Tool Works Inc. Feeder mechanism retention device for fastener driving tool
JP4507211B2 (ja) * 2007-09-03 2010-07-21 日立工機株式会社 打込機

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074547A1 (de) * 1981-09-10 1983-03-23 Suhner Inter Trade AG Druckluft-Handwerkzeugmaschine mit einem Handgriff
JPH0839454A (ja) * 1994-07-29 1996-02-13 Makita Corp エア釘打機のトリガバルブ
CN1464820A (zh) * 2001-06-28 2003-12-31 普里本纳·韦尔弗里德·博恩曼 压力介质驱动的推出装置
CN2709119Y (zh) * 2004-05-24 2005-07-13 王雷 Co2气动射钉枪

Also Published As

Publication number Publication date
US20080185416A1 (en) 2008-08-07
CN2908061Y (zh) 2007-06-06
US7637406B2 (en) 2009-12-29

Similar Documents

Publication Publication Date Title
WO2006119665A1 (en) A nailing machine driven by liquid pressurized gas
KR890000720B1 (ko) 연소가스를 동력으로 사용하는 타정기
CA1198851A (en) Combustion gas-powered fastener driving tool
US8939341B2 (en) Fastener driving apparatus
TWI224993B (en) Fastener driving tool having pressurized power source
US6557542B1 (en) Accumulator chamber for gun
US20050056680A1 (en) Nail gun
CN111216075A (zh) 一种便携式电动钢钉枪
US20190224825A1 (en) Gas spring and impacting and driving apparatus with gas spring
US2706103A (en) Nail extractor
CN219821791U (zh) 一种无人机气体压缩弹射装置
US8418781B2 (en) Pneumatically powered impact device and method
CN215447592U (zh) 一种能提高发射距离的气压式锚钩发射器
CN212497578U (zh) 气钉枪
CN109926982B (zh) 天花板施工用击钉器
TWI608911B (zh) Ceiling nailer for construction
CN209440102U (zh) 一种大威力排钉型瓦斯射钉器
CN211178128U (zh) 一种手持弹射救生器
CN209036444U (zh) 一种保温型瓦斯射钉器
CN219075560U (zh) 一种燃气射钉枪的枪头结构
CN219896871U (zh) 一种便携式多功能灭火筒
CN212497579U (zh) 气钉枪
TWI832204B (zh) 高壓流體閥控之壓力回應、設備及其方法的改進或相關改進
US7975683B1 (en) Spring action paintball marker
CN215848013U (zh) 一种具有自动复位和消音功能的通用射钉器

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 20059000044

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 11913846

Country of ref document: US

NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

NENP Non-entry into the national phase

Ref country code: RU

WWW Wipo information: withdrawn in national office

Country of ref document: RU

122 Ep: pct application non-entry in european phase

Ref document number: 05745298

Country of ref document: EP

Kind code of ref document: A1