EP0720892B1 - Outil d'enforcement des moyens de fixation - Google Patents

Outil d'enforcement des moyens de fixation Download PDF

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Publication number
EP0720892B1
EP0720892B1 EP95119521A EP95119521A EP0720892B1 EP 0720892 B1 EP0720892 B1 EP 0720892B1 EP 95119521 A EP95119521 A EP 95119521A EP 95119521 A EP95119521 A EP 95119521A EP 0720892 B1 EP0720892 B1 EP 0720892B1
Authority
EP
European Patent Office
Prior art keywords
housing cap
housing
valve
channel
cap
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.)
Expired - Lifetime
Application number
EP95119521A
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German (de)
English (en)
Other versions
EP0720892A1 (fr
Inventor
Marcus Sauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Joh Friedrich Behrens AG
Original Assignee
Joh Friedrich Behrens AG
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 Joh Friedrich Behrens AG filed Critical Joh Friedrich Behrens AG
Publication of EP0720892A1 publication Critical patent/EP0720892A1/fr
Application granted granted Critical
Publication of EP0720892B1 publication Critical patent/EP0720892B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25C1/041—Hand-held nailing tools; Nail feeding devices operated by fluid pressure, e.g. by air pressure with fixed main cylinder
    • B25C1/042—Main valve and main cylinder

Definitions

  • the invention relates to a fastener driving tool according to the preamble of claim 1.
  • Such a driving tool is known from EP-A-065142.
  • Such driving tools have a muzzle tool an ejection channel through which fasteners are ejected can be.
  • the ejection channel is one side-fed magazine.
  • Across the food opening is a plunger that can be moved with a Ejection movement of a fastener from the muzzle tool pushes out.
  • the plunger is on a working piston held in a working cylinder.
  • the working displacement above the working piston is at a driving process filled with compressed air. For the return movement the working piston to its initial position aired. There can be a working displacement below the working cylinder with return air to drive the piston back be filled.
  • valve piston which is in a lower position with the Compressed air source connected inlet duct to the upper working stroke of the working cylinder shut off.
  • Valve piston In an upper one Position the valve piston shuts off an outlet channel, the through a bore in the valve piston with the working displacement connected is.
  • the valve piston has a lower and upper position lower effective area, constantly from the pressure of the compressed air source is acted upon. It also has an upper effective area which can be selected using a control valve at atmospheric pressure or the pressure of the compressed air source is acted upon.
  • the control valve is usually next to arranged the valve piston and by means of a Housing-guided valve rod can be actuated by the trigger. It but there are also device versions in which the control valve sits right next to the trigger and over a longer one Control channel is connected to the main valve.
  • the housing cap of these driving tools is above the main valve. It is with the device housing screwed and sealed against this.
  • a valve seat element is arranged, which Drilling through the valve piston in its upper position closes and shuts off the outlet duct. Then compressed air can through the inlet duct into the working cubic space and drive the cylinder down. From the valve seat element from the outlet channel leads to an outlet opening on the Outside of the housing cap.
  • the compressed air source from the working cubic space separated and is the back of the working piston displaced air is discharged into the open through the outlet duct.
  • the exhaust air flowing out of the housing cap can be a user interfere with the outflow in certain working positions can be aimed directly at his face. That is why housing caps are already attached to them from the outside Air control devices become known, which the Should influence the outflow favorably.
  • DE-B-2 601 836 e.g. a valve assembly for one Generic nail gun known at extreme simple construction high impact performance with a minimum ensures air consumption and the sound pressure level of the Air outlet on the outside of the housing cap lowers.
  • the known head valve devices are due to the cap design made of cast metal or plastic, their sealing to the housing and any existing control equipment expensive for exhaust air.
  • the object of the invention is a driving tool for fasteners of the aforementioned Kind of creating that with less effort allows favorable discharge of the exhaust air.
  • the outlet channel at least one channel opening on the circumference of the housing cap on.
  • a channel opening and in the circumferential direction Extending connecting channel connecting outlet extends.
  • the cover ring is sealing between the housing cap and housing clamped.
  • the aperture ring takes over Sealing the housing cap and housing. In contrast to The state of the art is therefore not one of the air guiding devices separate sealing element required. On top of that ensures the clamp fit of the aperture ring for fixing it on Device without additional fasteners would be required.
  • the outlet channel is preferably through at least one radial Outflow bore of the housing cap with the channel opening performed at the outer end.
  • the connection channel can have a groove on the circumference of the housing cap. In the groove can open several channel openings.
  • the outlet opening can be used for a low-noise and low-noise air outlet slit-shaped and over a peripheral portion of the Aperture ring extends.
  • the aperture ring preferably has an L-shaped cross section, its vertical leg the circumference of the housing cap covered and his horizontal leg between sealing faces of the screw cap and housing is arranged. By pinching the horizontal leg becomes the seal between the housing cap and housing ensured. Clamping forces can suffice here allow the bezel ring to twist.
  • the housing cap can be designed as a flange cap, which is connected to the housing with several screws. Then the aperture ring can be outside the screw circle are located. However, the housing cap is preferred via a central threaded screw connection to the device housing connected. This facilitates a tilt-free Assembly, service and setting the clamping force for the aperture ring.
  • the housing cap can be solid be executed so that it is like a hammer head for rework is usable. This device function is supported by the Training of the air control device favors.
  • the cap does not need more elaborate than metal or plastic casting to be executed, but can be an inexpensive turned steel part.
  • the threaded screw connection preferably has an external thread on a hollow cylindrical cap shoulder of the housing cap and an internal thread at the top of the valve space on.
  • a control channel of the control valve can be located below the housing cap in the valve compartment. Has preferred the control channel one when the housing cap is removed a linear movement from the externally accessible connecting section to the valve room. It is also preferred that the control valve or the control channel has a blind bore have introduced from the bottom of the housing is.
  • the valve piston can be in a hole in the device housing seal so that on a shoulder on the valve piston for an O-valve sealing ring can be dispensed with.
  • the shoulder is formed in the device housing.
  • the main valve body is made with a simple tool will. This creates in the groove for the sealing ring No burr.
  • the control channel or the control valve will open another avoided the top of the housing, so that a conclusion by the screwable housing cap is sufficient.
  • the valve piston of the main valve preferably has a piston attachment, the sealing through a bushing of the housing cap is guided and in the upper position sealing on the valve seat element is present.
  • the socket can be sealed in the housing cap.
  • the socket can be on top have hollow cylindrical bushing, the radial channel sections of the outlet channel.
  • the valve seat element can be arranged in a blind hole in the housing cap be. Then the housing cap with socket or valve seat element unscrewable from the housing, whereby the valve piston remains in the valve chamber.
  • a housing 1 and 2 has a housing 1, which has a working cylinder 3 in a housing head 2, in which a working piston 4 is arranged.
  • the working piston 4 is connected to a driving plunger 5, which led into an ejection channel 6 of a muzzle tool 7 is.
  • a linear one Magazine 8 set for fasteners On the side of the muzzle tool 7 is a linear one Magazine 8 set for fasteners, the connected to the discharge duct 6 via a feed opening is.
  • the housing 1 also has a handle 9 in which a Compressed air storage space 10 is provided, which has a Hose connection 11 can be connected to a compressed air source is. At the rear end, the handle 9 is over a bridge 12 connected to the magazine 8. There is also a locking lever 13, which is used to open and close the magazine 8 serves when refilling fasteners.
  • the control valve carrier 15 houses one Switch pin 16, the with a cylindrical portion Release lever 14 contacted and with a cone section concentric with one connected to the compressed air supply space 10 Sealing bush 17 is aligned in the housing 1. In the position shown gives the switching pin 16 with his Cone section the passage of the sealing bush 17 free, so that a cavity formed in the control valve carrier 15 18 is connected to the compressed air supply space.
  • the release lever 14 When actuated the release lever 14 by swiveling up the cone section indented into the opening of the socket 17, so that the above connection is interrupted. At the same time becomes one in a groove between the cone section and cylinder section Arranged O-ring seal (not shown) lifted from a sealing seat of the control valve carrier 15 and a connection in the area of the cylinder section 16 the cavity 18 released with the environment.
  • the cavity 18 is connected to a control channel which a tube 19 in crossing the compressed air storage space 10 a blind hole made from the bottom of the housing 20 has.
  • the control channel has one with the blind hole 20 connected connecting channel 21, which is in a valve chamber 22 opens out, which is arranged above the working cylinder 3 and closed at the top by a housing cap 24 is.
  • a valve piston 25 is arranged in the valve chamber 22 carries an O-ring 26 on the outer circumference. As in Fig. 3 can be seen more clearly, the valve piston 25 has a External stage 27 for receiving the O-ring 26. Top the valve piston 25 has a hollow cylindrical shape Piston shoulder 28. The valve piston has a central bore 29, which extends through the piston shoulder 28. At the top, the through hole 29 has an extension 30, the one Coil spring 31 receives.
  • the valve piston 25 has an O-ring groove 32 in the bottom an O-ring 33 sits on the underside of the valve piston survives something.
  • valve piston In the position shown in FIG. 1, the valve piston is supported 25 with the underside of the O-ring 33 sealing on top of the working cylinder 3.
  • the coil spring 31 is supported on the underside of a valve seat element 34 from that inserted into a blind bore 35 of the housing cap 24 is.
  • the piston shoulder 28 is guided in a bushing 36 an O-ring for sealing against the piston shoulder 37 wears.
  • the socket 36 has an annular groove 38 inside for the O-ring on. Outside it has an annular groove 39 for another O-ring 40 for outside sealing.
  • the bush 36 On the bottom the bush 36 has radially extending grooves 41 the bushing 36 carries a hollow cylindrical bushing 42, the top with radially extending outflow grooves 43 is provided.
  • the socket 36 is supported with its upper Edge on the underside of the housing cap 24, the Outflow grooves 43 allow air to pass between the inside and outside of the socket.
  • the outside is Bushing 36 on the O-ring 40 on a hollow cylindrical Supported cap shoulder 44 of the housing cap 24.
  • the cap attachment has 44 an external thread 45.
  • the Housing cap 24 designed as a flat truncated cone 45 '.
  • Cylinder section 46 which has an annular groove 47 on the outside.
  • Radial outflow bores are in the cylinder section 46 48 arranged that opened to the inside of the cap are and have 47 channel openings 49 in the annular groove.
  • the housing cap 24 is a solid turned part made of metal.
  • the housing cap 24 carries on the outside of the cylinder section 46 has an aperture ring 51.
  • the Aperture ring 51 has a leg 52 for covering the annular groove 47 and a leg 53 which engages under the cylinder section 46.
  • the leg 53 is between the housing cap 24 and clamped the upper edge of the housing head 2 and seals the housing cap 24 towards the housing 1.
  • the thigh 52 has a slot-shaped outlet opening 54, which extends over extends a portion of its circumference (about 45 °).
  • the leg has at the top of the outlet opening 54 51 an air guide surface 55, which is at an acute angle to the leg 52 is inclined.
  • the aperture ring 51 can be turned, the air guide surface 55 being used as a finger attack can be. This allows the position of the outlet opening Change 54 to the ring groove 47.
  • the device works as follows: In the starting position 1, the compressed air supply space 10 is over the cavity 18, the tube 20 and the connecting channel 21 connected to the valve chamber 22. Compressed air from the Compressed air storage space 10 thus acts on the upper side of the valve piston 25. At the same time, it lies on the underside of the valve piston 25 in the above the working cylinder 3rd protruding area. Because the pressure on the top Effective area of the valve piston 25 supported by the Coil spring 31 is greater than the pressure on the lower effective area is, the valve piston seals against pressed the upper edge of the working cylinder 3. The working displacement above the working piston 4 is over the Bore 29 of the valve piston 25 with the interior of the Bushing 36 and via the outflow grooves 43 with the interior of approach 44 connected. Via the outflow bores 48 and the annular groove 47 of the housing cap 24 and the outlet opening 54 of the aperture ring 51, it is also with the environment connected.
  • the housing cap 24 can simply be screwed in and out can, the valve seat member 34 and the sealing pinched Socket 36 can be taken.
  • the massive turned part as a face for reworking deploy.
  • the diaphragm ring 51 enables adjustment the outlet opening 54 for the discharge of the exhaust air the piston movement upwards in a favorable for the user Direction.
  • the aperture ring 51 causes at the same time a seal of the housing cap 24 against the housing 1.
  • a housing cap 59 can be arranged on a circle Have through holes 60 for receiving screws, with which it is flange-like above a main valve can be fixed to a housing.
  • the housing cap 59 has a laterally projecting nose 61 that of the seal a bore of the Control valve or the control channel is used.
  • On the bottom the housing cap 59 has a central blind hole 62 for a valve seat element and a groove 63 surrounding it, the inclusion of a silencer and the exhaust serves the exhaust air.
  • a diaphragm ring 66 sits on the circumference of the housing cap 59 essentially L-shaped cross section. Its vertical Leg 67 is released at 68, so that the aperture ring on the cylindrical circumference of the housing cap 59 via a Angle is adjustable until it strikes the nose 61.
  • the aperture ring 66 also has a slot-shaped outlet opening 69, which extends over part of its circumference. Above the outlet opening 69 is an oblique one downwardly inclined air guide surface 70.
  • the horizontal leg 71 of the aperture ring 66 engages under the lower end face of the housing cap 59 so that he between this and the upper edge of a device housing can be pinched.
  • the horizontal leg 71 is extends outside of the through holes 60 so that these a rotation of the aperture ring 66 does not hinder.
  • the annular groove 65 is on the circumference of the housing cap 59 only in the range of rotation of the vertical leg 67 of the diaphragm ring 66 extends. From the groove 63 through the outflow bores 64 exhaust air entering the annular groove 65 can only flow out through the outlet opening 69 and will therefore each derived from the rotational position of the aperture ring 66.

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

Claims (14)

  1. Appareil à enfoncer pour moyens de fixation, dans lequel un boítier d'appareil (1) comporte un espace de soupape (22), fermé par un chapeau de boítier (24, 59), d'une soupape principale, dans lequel un piston à soupape (25) est guidé avec étanchéité en coulissant coaxialement au-dessus d'un cylindre de travail (3) qui, dans une position inférieure, obture un canal d'admission, relié à une source d'air comprimé, qui débouche dans l'espace supérieur de la cylindrée de travail et, dans une position supérieure, obture, par application étanche sur un élément de siège de soupape (34), un canal d'échappement (43, 47, 48), relié à la cylindrée de travail par un perçage (29, 30) du piston à soupape (25), le piston à soupape comportant une surface efficace inférieure, soumise en permanence à la pression de la source d'air comprimé, et une surface efficace supérieure qui, à l'aide d'une soupape de commande (15, 16, 17), est au choix mise à la pression atmosphérique ou à la pression de la source d'air comprimé, et le canal d'échappement (29, 30, 43, 47, 48) comportant au moins une ouverture de canal (49) à la périphérie (46) du chapeau de boítier (24, 59), caractérisé en ce que le chapeau de boítier porte une bague de réglage tournante (51, 66) disposée à l'extérieur de l'ouverture de canal et pourvue au moins d'une ouverture d'échappement, un canal de liaison (47, 65) reliant ouverture de canal et ouverture d'échappement s'étendant entre chapeau de boítier et bague de réglage dans le sens de la périphérie, et la bague de réglage (51, 66) étant serrée en même temps de manière étanche entre le chapeau de boítier (24, 59) et le boítier (1).
  2. Appareil d'enfoncement selon la revendication 1, caractérisé en ce que le canal d'échappement comporte à l'extrémité extérieure, dans le chapeau de boítier (24, 59), au moins un perçage d'écoulement radial (48, 64) avec l'ouverture de canal (49).
  3. Appareil d'enfoncement selon la revendication 1 ou 2, caractérisé en ce que le canal de liaison comporte une gorge annulaire (47, 65) à la périphérie (46) du chapeau de boítier (24, 59).
  4. Appareil d'enfoncement selon l'une des revendications 1 à 3, caractérisé en ce que l'ouverture d'échappement (54, 69) a la forme d'une fente et s'étend sur une partie de la périphérie de la bague de réglage (51, 66).
  5. Appareil d'enfoncement selon l'une des revendications 1 à 4, caractérisé en ce qu'une surface de guidage d'air (55, 70) de la bague de réglage est affectée au canal d'échappement (54, 69).
  6. Appareil d'enfoncement selon l'une des revendications 1 à 5, caractérisé en ce que la bague de réglage (51, 66) a une section transversale en L, la branche verticale (52, 67) étant placée à la périphérie (46) du chapeau de boítier (24, 59) et la branche horizontale (53, 71) étant placée entre les surfaces étanches d'extrémité du chapeau de boítier (24, 59) et le boítier (1).
  7. Appareil d'enfoncement selon l'une des revendications 1 à 6, caractérisé en ce que le chapeau de boítier (24) comporte un raccord vissé central (45, 50) avec le boítier d'appareil (1).
  8. Appareil d'enfoncement selon l'une des revendications 1 à 7, caractérisé en ce que le chapeau de boítier (24, 59) est une pièce en acier tournée.
  9. Appareil d'enfoncement selon l'une des revendications 7 ou 8, caractérisé en ce que le raccord vissé comporte un filetage extérieur (45) sur un épaulement cylindrique creux (44) du chapeau de boítier (24) et un filetage intérieur (50) sur le bord supérieur de l'espace de soupape (22).
  10. Appareil d'enfoncement selon l'une des revendications 1 à 9, caractérisé en ce qu'un canal de command (19, 21) de la soupape de commande débouche dans l'espace de soupape (22) au-dessuus du chapeau de boítier (24, 59).
  11. Appareil d'enfoncement selon la revendication 10, caractérisé en ce que le canal de commande a une partie (19) pourvue d'un trou borgne (20) ménagé par la face inférieure du boítier et/ou une partie de liaison (21) accessible par un mouvement rectiligne lorsque le chapeau de boítier (24, 59) est retiré.
  12. Appareil d'enfoncement selon l'une des revendications 1 à 11, caractérisé en ce que le piston à soupape (25) a, en haut, un épaulement de piston cylindrique creux (28), par lequel passe le perçage (29, 30) du piston à soupape, qui est guidé de manière étanche et en coulissant dans une douille (36) du chapeau de boítier (24) et qui, dans la position supérieure, porte sur l'élément de soupape (34).
  13. Appareil d'enfoncement selon la revendication 12, caractérisé en ce que la douille (36) est tenue à l'extérieur de manière étanche dans le chapeau de boítier (24).
  14. Appareil d'enfoncement selon la revendication 13, caractérisé en ce que la douille (36) présente, en haut, un épaulement cylindrique creux (42) qui s'étend jusqu'à la face inférieure du chapeau de boítier (24) et qui comporte des parties radiales (43) du canal d'échappement.
EP95119521A 1995-01-04 1995-12-12 Outil d'enforcement des moyens de fixation Expired - Lifetime EP0720892B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29500073U DE29500073U1 (de) 1995-01-04 1995-01-04 Eintreibgerät für Befestigungsmittel
DE29500073U 1995-01-04

Publications (2)

Publication Number Publication Date
EP0720892A1 EP0720892A1 (fr) 1996-07-10
EP0720892B1 true EP0720892B1 (fr) 1998-09-16

Family

ID=8002160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95119521A Expired - Lifetime EP0720892B1 (fr) 1995-01-04 1995-12-12 Outil d'enforcement des moyens de fixation

Country Status (5)

Country Link
US (1) US5715986A (fr)
EP (1) EP0720892B1 (fr)
JP (1) JP3219990B2 (fr)
DE (2) DE29500073U1 (fr)
TW (1) TW301622B (fr)

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Publication number Priority date Publication date Assignee Title
US8556149B2 (en) 2004-02-20 2013-10-15 Black & Decker Inc. Adjustable exhaust assembly for pneumatic fastener

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USD420878S (en) * 1999-02-17 2000-02-22 P&F Brother Industrial Corp. Nail driving gun
US6431429B1 (en) * 1999-08-06 2002-08-13 Stanley Fastening Systems, Lp Fastener driving device with enhanced adjustable exhaust directing assembly
US6059166A (en) * 1999-11-01 2000-05-09 Basso Industry Corp. Exhausted air dispensing device for a power nailer
US6059167A (en) * 1999-11-01 2000-05-09 Basso Industry Corp. End base of a power stapler
US6745928B2 (en) * 2000-01-24 2004-06-08 Hitachi Co., Ltd Trigger valve apparatus for pneumatic tool
KR20010087687A (ko) * 2000-03-08 2001-09-21 오왕근 타정기의 장전통 및 공기방출구의 구조
US6296168B1 (en) * 2001-01-16 2001-10-02 Basso Industry Corp. Engagement structure between a cover and an end cap on a rear end of a power nailer
TW585152U (en) * 2001-07-27 2004-04-21 Wang-Kuan Lin Upper lid seat structure for nailing gun
US6783050B2 (en) * 2002-05-31 2004-08-31 Hitachi Koki Co., Ltd. Nail gun provided with duster function
US6763990B2 (en) * 2002-07-30 2004-07-20 Yun-Chung Lee Rotary cover head of nail gun
US7156012B2 (en) * 2004-01-20 2007-01-02 Hitachi Koki Co., Ltd. Pneumatically operated fastener driving tool
US7988025B2 (en) 2004-02-24 2011-08-02 Black & Decker Inc. Pneumatic fastener
US8899460B2 (en) 2007-06-12 2014-12-02 Black & Decker Inc. Magazine assembly for nailer
US7753245B2 (en) * 2007-06-22 2010-07-13 Ethicon Endo-Surgery, Inc. Surgical stapling instruments
US8028881B2 (en) * 2009-02-20 2011-10-04 Robert Bosch Gmbh Nailer strike plate
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Publication number Priority date Publication date Assignee Title
US8556149B2 (en) 2004-02-20 2013-10-15 Black & Decker Inc. Adjustable exhaust assembly for pneumatic fastener

Also Published As

Publication number Publication date
EP0720892A1 (fr) 1996-07-10
JPH08229843A (ja) 1996-09-10
DE29500073U1 (de) 1995-03-02
US5715986A (en) 1998-02-10
TW301622B (fr) 1997-04-01
JP3219990B2 (ja) 2001-10-15
DE59503608D1 (de) 1998-10-22

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