EP0782902B1 - Rillenkolben - Google Patents
Rillenkolben Download PDFInfo
- Publication number
- EP0782902B1 EP0782902B1 EP96810524A EP96810524A EP0782902B1 EP 0782902 B1 EP0782902 B1 EP 0782902B1 EP 96810524 A EP96810524 A EP 96810524A EP 96810524 A EP96810524 A EP 96810524A EP 0782902 B1 EP0782902 B1 EP 0782902B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- driving piston
- setting
- ball
- shaft portion
- 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
Links
- 239000003380 propellant Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 5
- 230000004308 accommodation Effects 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000001994 activation Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
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
- B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
- B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
- B25C1/14—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil
-
- 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
- B25C1/08—Hand-held nailing tools; Nail feeding devices operated by combustion pressure
- B25C1/10—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge
Definitions
- the invention relates to a powder-operated setting tool with a cartridge holder having carrier, a guided in the carrier, displaceable relative to the carrier Piston guide, one arranged in the piston guide, a cylindrical Shaft part and a driving piston having a head part, which in the Cartridge holder arranged propellant charge from a rear starting position can be driven into a setting direction-side front end position and a braking device for the driving piston, which is at least one radially displaceable, located on a conical Includes inner contour of a spring ring supporting ball, which in a to the shaft part open reception of the piston guide parallel to the longitudinal extension of the Piston guide can be moved to a limited extent.
- DE-A-43 13 504 describes a powder-operated setting tool with one, one Cartridge having carrier, a guided in the carrier, relative to Carrier displaceable piston guide in a guide bore of the piston guide stored driving piston and a braking device known.
- the driving piston is by means of Propellant gases of a propellant charge arranged in the cartridge receptacle within a formed by the guide bore of the piston guide and part of the carrier Displacement displaceable.
- the driving piston consists of a cylindrical shaft part and a headboard together.
- the braking device is formed by one in the piston guide provided, open radially towards the cylindrical shaft part of the driving piston Image with two balls resting on the shaft part and one surrounding the balls Spring washer.
- the one running parallel to the longitudinal extension of the driving piston Length of the receptacle exceeds the diameter of one of the balls.
- the spring ring points a conical inner contour acting on the balls, leading to the driving piston axis is inclined to form an angle that opens against the direction of driving.
- the Ball If the driving piston moves slightly in the setting direction, the Balls in the setting direction.
- the rolling on the conical inner contour of the spring ring Balls press the spring ring radially outwards on the one hand, and others on the one hand, the balls are laterally pressed against the shaft part by the spring force of the spring ring of the driving piston, so that an independent displacement of the driving piston in Setting direction is prevented in particular by gravity.
- the driving piston is developed with the help of a very large energy accelerated in the setting direction.
- the brake device braking force acting on the shaft part is negligibly small, so that the braking force does not have a negative effect on the acceleration of the driving piston.
- the driving piston strikes Driving piston after a setting process at a high speed on one of the The face of the carrier facing the setting direction in the area of the cartridge holder, bounces off there and moves again in the setting direction so that it is not in its Starting position comes to rest.
- the Driving pistons can no longer be accelerated to the correct extent, so that too setting fastener is not driven deep enough into a subsurface becomes.
- FR-A-2518925 describes a setting tool which can be driven by high-tension gases Working piston and a spring-loaded locking element for engaging in a recess known on the working piston.
- Locking To engage the locking element in the recess are Locking and a return spring is provided and the locking element is against the force of Return spring and can be disengaged while overcoming the force of the detent spring.
- EP-A-346275 discloses a powder-operated setting tool with a piston guide and a driving piston axially displaceable in the piston guide. Located in the piston guide there is a recess radially open towards the driving piston, in which a Driving piston adjacent brake ball and a spring for the brake ball is arranged. The Extension of the recess parallel to the longitudinal axis of the driving piston exceeds the Brake ball diameter.
- the spring is designed such that the brake ball underneath Tensioning the spring is driven to the driving piston and thereby on the driving direction side Comes to the end of the recess.
- the invention has for its object to a powder-powered setting tool create its driving piston safely in its starting position in the event of over-energy can be arranged and held.
- the object is achieved in that the shaft part of the driving piston in the end region on the setting direction axially one behind the other, at least two of them spaced, cooperating with the ball of the braking device, rotating Has trained depressions and that the positive connection between the Part of the shaft and the ball is lifted as soon as the driving piston is done Setting process has reached its starting position again.
- the propellant piston becomes one in the propellant gas Cartridge holder arranged propellant accelerated in the setting direction.
- a braking device is activated, the frictional force of which, however, is negligible has little effect on the acceleration of the driving piston.
- the driving piston makes a larger stroke, so that at least two in the setting direction End region of the shaft part arranged depressions the area of Ball of the braking device can pass.
- the driving piston bounces off the moves on the side of the carrier in the area of the cartridge holder Driving piston in the setting direction.
- the wells come again with the ball of Brake device in contact, and there is a positive connection between the ball and one of the depressions.
- the braking device very quick activated so that the driving piston does not move any further in the setting direction.
- the driving piston After the driving piston has reached this position, it moves between the Carrier and the housing arranged, biased spring the carrier in the setting direction.
- the carrier is displaced relative to the piston guide so that the displacement length reduced again.
- the one facing the setting direction arrives Side of the carrier in the area of the cartridge holder with one of the setting directions opposite side of the head part in contact and pushes the driving piston in Direction of setting in front of you until the starting position of the driving piston and the carrier compared to the housing is reached again.
- the force coming from the spring is so large that the braking force of the braking device is overcome and the positive one Connection between the shaft part and the ball is released.
- the Starting position of the driving piston is the circumferential recess between an end region of the piston guide and the braking device on the setting direction.
- the bottom of the depressions is designed like a circular section.
- a good positive connection between the shaft part of the driving piston and the Sphere is reached when preferably the radius of the circular section essentially corresponds to the radius of the sphere.
- a driving piston driven by over-energy strikes at high speed the side of the carrier facing the setting direction. Bouncing off the side The carrier is accordingly strong, so that the driving piston moves in very quickly Setting direction moves. So that the braking device having only a certain braking force
- the shaft part of the driving piston has a safe interception of the driving piston preferably several axially spaced-apart depressions, which form a positive connection with the ball of the braking device can.
- the braking device activated. If the kinetic energy of the driving piston exceeds the braking force, so the ball is disengaged radially, the second or the next depression meets the Ball and the braking device is activated again. If the braking force of the If the braking device is not sufficient, then further radial disengagements of the ball follow and further activations of the braking device until the driving piston stops.
- the shaft part of the driving piston advantageously has three axially arranged depressions. In the starting position of the driving piston, all three depressions are between the setting direction end of the piston guide and the ball of the braking device.
- the width of the depressions in the longitudinal direction of the shaft part in essentially the same.
- the invention is based on a drawing which in connection with the invention relevant device parts of a powder-operated setting tool in the pressed Position shows, explained in more detail.
- the powder-operated setting tool according to the invention is against the drawing Pressed recording material, not shown, in which a likewise not graphically shown fastener to be driven.
- This fastener is stored within an element guide 14, which is interposed a braking device 9 is firmly connected to a piston guide 4.
- a driving piston 6 is mounted in a guide bore of the piston guide 4.
- the driving piston 6 is composed of a shaft part 7 and a head part 8.
- the shaft part 7 has three in the end direction on the setting direction axially arranged, circumferentially formed recesses 13 with provided the same width B, the base of which is circular.
- an elastic damping element 15 arranged, which can serve the damping of the driving piston 4.
- the braking device is located between the piston guide 4 and the element guide 14 9, which consists of two diametrically opposed balls 11, a spring ring 10 surrounding the balls 11 and one for the cylindrical shaft part 7 of the driving piston 6 radially open receptacle 12.
- the spring ring 10 is Resilient in the radial direction and has a conical, acting on the balls 11 Inner contour on that to the driving piston axis forming an opposite to the driving direction opening angle is inclined.
- the receptacle 12 is used to hold the Balls 11 and has a parallel to the longitudinal extension of the driving piston 6 Length that exceeds the diameter of one of the balls 11.
- the piston guide 4 is surrounded by a carrier 2 Piston guide 4 axially displaceable. At a free end facing away from the setting direction of the carrier 2, a cartridge holder 3 is arranged, which does not hold one shown propellant charge.
- the cartridge receptacle 3 is provided with a bore the interior of the carrier 2 and thus also with the driving piston 6 in connection.
- the carrier 2 is located in a housing 1 and can be moved relative to the housing 1.
- a spring 16 arranged between the housing 1 and the carrier 2 provides making sure that the carrier 2 is then again in its starting position with respect to the housing 1 is moved back after the carrier 2 during a setting process was moved against the setting direction.
- the one stored in the piston guide 4 Driving piston 6 is displaceable within a displacement that is formed by the Guide bore 5 of the piston guide 4 and a part of the carrier 2, the one on the Has outer contour of the piston part 8 matched inner contour.
- the driving piston 6 is driven with the help of driving gases Cartridge holder 3 arranged propellant accelerated in the setting direction.
- the Both balls 11 of the braking device 9 roll in the receptacle 12 of the piston guide 4 in the setting direction until it is on the opposite side of the setting direction Apply end of the receptacle 12.
- the balls 11 act with a roll conical inner contour of a spring ring 10 together, which is thereby biased radially becomes.
- the spring ring 10 presses the balls 11 laterally against the shaft part 7 of the driving piston 6, so that there is friction between the shaft part 7 and the balls 11. This Friction is in contrast to the energy with which the drive piston 6 in the setting direction is accelerated, negligibly small, so that the friction does not adversely affect the Acceleration of the driving piston 6 affects.
- the driving piston 6 makes a larger stroke, so that the Indentation 13 arranged in the end region of the shaft part 7 on the setting direction Area of the balls 11 of the braking device 9 can pass.
- the driving piston 6 moves the driving piston 6 in the setting direction.
- the wells 13 come again with the Balls 11 of the braking device 9 in contact, and there is one or more positive Connections one after the other. Due to the positive connections the braking device 9 is activated more quickly, so that the driving piston 6 does not move further in Setting direction can move.
- the bottom of the recess 13 is circular formed, the radius of the circular section essentially the radius of a corresponds to the balls 11.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Actuator (AREA)
Description
Claims (5)
- Pulverkraftbetriebenes Setzgerät mit einem, eine Kartuschenaufnahme (3) aufweisenden Träger (2), einer in dem Träger (2) geführten, relativ zum Träger (2) versetzbaren Kolbenführung (4), einem in der Kolbenführung (4) angeordneten, ein zylindrisches Schaftteil (7) und ein Kopfteil (8) aufweisenden Treibkolben (6), der mittels Treibgasen einer in der Kartuschenaufnahme (3) angeordneten Treibladung von einer hinteren Ausgangssstellung in eine setzrichtungsseitige vordere Endstellung treibbar ist und einer Bremseinrichtung (9) für den Treibkolben (6), die wenigstens eine radial versetzbare, sich an einer konischen Innenkontur eines Federringes (10) abstützende Kugel (11) umfasst, die in einer zum Schaftteil (7) hin offenen Aufnahme (12) der Kolbenführung (4) parallel zur Längserstreckung der Kolbenführung (4) begrenzt versetzbar ist, dadurch gekennzeichnet, dass das Schaftteil (7) des Treibkolbens (6) im setzrichtungsseitigen Endbereich axial hintereinander, wenigstens zwei voneinander beabstandete mit der Kugel (11) der Bremseinrichtung (9) zusammenwirkende, umlaufend ausgebildete Vertiefungen (13) aufweist und dass die formschlüssige Verbindung zwischen dem Schaftteil und der Kugel aufgehoben wird, sobald der Treibkolben nach erfolgtem Setzvorgang wieder seine Ausgangsstellung erreicht hat.
- Setzgerät nach Anspruch 1, dadurch gekennzeichnet, dass der Grund der Vertiefungen (13) kreisausschnittartig ausgebildet ist
- Setzgerät nach Anspruch 2, dadurch gekennzeichnet, dass der Radius des Kreisausschnittes im wesentlichen dem Radius der Kugel (11) entspricht.
- Setzgerät nach Anspruch 1 oder 3, dadurch gekennzeichnet, dass das Schaftteil (7) drei axial hintereinander angeordnete Vertiefungen (13) aufweist.
- Setzgerät nach Anspruch 4, dadurch gekennzeichnet, dass die in Längsrichtung des Schaftteils (7) gemessene Breite (B) der Vertiefungen (13) im wesentlichen gleich ist
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19548870A DE19548870A1 (de) | 1995-12-27 | 1995-12-27 | Pulverkraftbetriebenes Setzgerät |
DE19548870 | 1995-12-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0782902A1 EP0782902A1 (de) | 1997-07-09 |
EP0782902B1 true EP0782902B1 (de) | 2001-04-11 |
Family
ID=7781515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96810524A Expired - Lifetime EP0782902B1 (de) | 1995-12-27 | 1996-08-08 | Rillenkolben |
Country Status (6)
Country | Link |
---|---|
US (1) | US5950900A (de) |
EP (1) | EP0782902B1 (de) |
JP (1) | JP3907763B2 (de) |
KR (1) | KR100431363B1 (de) |
DE (2) | DE19548870A1 (de) |
TW (1) | TW320594B (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19755730A1 (de) * | 1997-12-15 | 1999-06-17 | Hilti Ag | Bolzensetzgerät |
DE10103893A1 (de) * | 2001-01-30 | 2002-08-01 | Hilti Ag | Setzgerät |
DE10105196B4 (de) * | 2001-02-06 | 2013-09-26 | Hilti Aktiengesellschaft | Setzgerät |
DE10105884C2 (de) * | 2001-02-09 | 2002-12-05 | Hilti Ag | Kolbenhalterung |
US7051528B2 (en) * | 2001-08-17 | 2006-05-30 | Yves Daunas | Autonomous gas powered ram |
US6679411B2 (en) | 2001-12-21 | 2004-01-20 | Illinois Tool Works Inc. | Piston retention system for a fastener driving tool |
FR2848489B1 (fr) * | 2002-12-11 | 2006-02-03 | Prospection & Inventions | Appareil de scellement a tir indirect |
DE102005000113B4 (de) * | 2005-09-13 | 2014-03-27 | Hilti Aktiengesellschaft | Setzgerät |
DE102005000114A1 (de) * | 2005-09-13 | 2007-03-15 | Hilti Ag | Setzgerät |
DE102007000135A1 (de) * | 2007-03-08 | 2008-09-11 | Hilti Ag | Handwerkzeugmaschine mit pneumatischem Schlagwerk |
CN203092484U (zh) * | 2013-02-22 | 2013-07-31 | 郭景辉 | 一种用于射钉枪的卸力装置 |
EP2923799A1 (de) * | 2014-03-28 | 2015-09-30 | HILTI Aktiengesellschaft | Eintreibgerät |
DE202017103050U1 (de) * | 2017-05-19 | 2018-08-22 | Joh. Friedrich Behrens Ag | Eintreibgerät zum Eintreiben von Befestigungsmitteln in Werkstücke |
CN107627261A (zh) * | 2017-10-31 | 2018-01-26 | 丘利锋 | 一种消音性能好的连发式射钉器 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1034612A (fr) * | 1950-10-21 | 1953-07-28 | Pistolet fixateur de scellements, rivets et tiges de raccordements | |
FR61848E (fr) * | 1951-07-12 | 1955-05-18 | Pistolet fixateur de scellements, rivets et tiges de raccordements | |
US2904787A (en) * | 1955-01-12 | 1959-09-22 | Olin Mathieson | Fastener arresting device for a power actuated tool |
US3083692A (en) * | 1960-08-01 | 1963-04-02 | Ingersoll Rand Co | Impact tool safety device |
US3115637A (en) * | 1961-08-11 | 1963-12-31 | Olin Mathieson | Explosive actuated fastener driving tools |
US3285131A (en) * | 1965-03-31 | 1966-11-15 | Olin Mathieson | Power tool |
US4358041A (en) * | 1980-06-12 | 1982-11-09 | Olin Corporation | Powder-actuated tool with power adjustment and angle-fire control |
US4349141A (en) * | 1980-06-12 | 1982-09-14 | Olin Corporation | Piston return for powder actuated piston tool |
DE3151661A1 (de) * | 1981-12-28 | 1983-07-07 | Hilti AG, 9494 Schaan | "setzgeraet mit von hochgespannten gasen treibbarem arbeitskolben" |
DE3151658A1 (de) * | 1981-12-28 | 1983-07-07 | Hilti AG, 9494 Schaan | "setzgeraet mit von hochgespannten gasen verschieblichem treibkolben" |
DE3241528C2 (de) * | 1982-11-10 | 1986-04-10 | Eugen Lutz GmbH u. Co Maschinenfabrik, 7130 Mühlacker | Werkzeugspannfutter für einen Bohrhammer |
US4651912A (en) * | 1985-05-28 | 1987-03-24 | Uniset Corporation | Hammer-activated fastener tool |
DE3819813A1 (de) * | 1988-06-10 | 1989-12-14 | Hilti Ag | Pulverkraftbetriebenes setzgeraet |
US5269450A (en) * | 1993-02-10 | 1993-12-14 | Illinois Tool Works, Inc. | Hammer-strikable, powder-actuated, fastener-driving tool |
DE4313504A1 (de) * | 1993-04-24 | 1994-10-27 | Hilti Ag | Pulverkraftbetriebenes Setzgerät |
DE4414262C1 (de) * | 1994-04-23 | 1995-08-31 | Goro Sa | Vorrichtung zum Befestigen von Riemenverbindern |
-
1995
- 1995-12-27 DE DE19548870A patent/DE19548870A1/de not_active Withdrawn
-
1996
- 1996-08-08 EP EP96810524A patent/EP0782902B1/de not_active Expired - Lifetime
- 1996-08-08 DE DE59606761T patent/DE59606761D1/de not_active Expired - Lifetime
- 1996-08-14 TW TW085109861A patent/TW320594B/zh active
- 1996-09-24 KR KR1019960042174A patent/KR100431363B1/ko not_active IP Right Cessation
- 1996-12-23 US US08/780,078 patent/US5950900A/en not_active Expired - Lifetime
- 1996-12-26 JP JP34723096A patent/JP3907763B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE19548870A1 (de) | 1997-07-03 |
TW320594B (de) | 1997-11-21 |
EP0782902A1 (de) | 1997-07-09 |
KR970033612A (ko) | 1997-07-22 |
JPH09183081A (ja) | 1997-07-15 |
DE59606761D1 (de) | 2001-05-17 |
KR100431363B1 (ko) | 2004-11-20 |
JP3907763B2 (ja) | 2007-04-18 |
US5950900A (en) | 1999-09-14 |
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