EP0830920A1 - Bolzensetzgerät und Rückstellfeder dafür - Google Patents
Bolzensetzgerät und Rückstellfeder dafür Download PDFInfo
- Publication number
- EP0830920A1 EP0830920A1 EP97115895A EP97115895A EP0830920A1 EP 0830920 A1 EP0830920 A1 EP 0830920A1 EP 97115895 A EP97115895 A EP 97115895A EP 97115895 A EP97115895 A EP 97115895A EP 0830920 A1 EP0830920 A1 EP 0830920A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- bolt
- piston
- reinforcing elements
- driving piston
- 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
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
Definitions
- the invention is based on a bolt setting or pushing device, with the help of a fastener, usually in Form of a nail or bolt, can be set.
- the bolt pusher contains a propellant piston which is driven by the propellant gases after ignition of a cartridge is driven and drives the bolt through its feed movement.
- a bolt-driving tool of this type is already known (US-PS 3 331 546), for which purpose a large number of disc springs arranged around a piston rod of a driving piston is.
- the disc springs are preferably made of polyurethane and are alternately arranged in reverse so that a Disc spring package made of disc springs that are not connected results.
- the invention has for its object a bolt-driving tool to create, in which the driving piston after setting the fastener is reset and the device has a long service life without changing the spring.
- the invention is also based on the object of a spring to create for such a bolt gun.
- the invention proposes a bolt-setting tool with the features mentioned in claim 1 and a spring for this with the features mentioned in claim 15 in front. Developments of the invention are the subject of dependent claims.
- the Driving piston a piston rod with a reduced diameter has at least part of its length from the sleeve-like spring is surrounded.
- the spring proposed by the invention is used during assembly of the device simply placed over the piston rod and the device is then assembled. You no longer have to pay attention to it be that the individual disc springs always alternate be used in the reverse position.
- the spring between you the movement of the driving piston non-participating device part and the driving piston extends.
- the spring therefore acts directly on the driving piston.
- the spring cooperates with the driving piston Braking element attacks for this. This means, that towards the end of the setting movement of the driving piston, if so the spring is tightened more, this movement is partly converted into a braking movement by the braking element.
- the spring formed in this way can, for example be a tension spring. However, it is particularly favorable if the Spring is designed as a compression spring, so that when setting the fastener is stressed.
- the spring has stiffening elements distributed over its length, that don't deform themselves.
- the stiffening elements can in particular from a harder and / or other Material. This causes the spring to deform on small areas between two reinforcement elements concentrated so that the deviation of the spring in the Compression case kept small by the roughly cylindrical shape can be.
- the Stiffening elements during the movement of the driving piston be guided by this and / or by the piston raceway. So it can not happen that the elastomeric material existing spring during the very fast insertion movement deformed on one side or convoluted so that it hinders the insertion movement of the piston or else is destroyed by this.
- the stiffening elements are metallic washers, their outer diameter corresponds approximately to the inner diameter of the piston raceway, so that they are guided on their outside. Furthermore can their inside diameter is about the outside diameter of the piston rod correspond so that they are also guided on the inside be prevented from jamming.
- the spring with the Reinforcing elements is vulcanized together. This creates a one-piece spring that can be manufactured as a single element, which has all the desired properties.
- the spring has a wall thickness has, which is at most half as large, preferably is at most a third of the difference between the radius of the reinforcing elements and the radius of the inner opening of the reinforcement elements. This will ensure that the spring is a relative in the compressed state has small axial length, which is essentially only by the thickness of all reinforcing elements is determined, so that lie close to each other on a block.
- the sleeve-like spring is advantageously close to the Inner opening of the reinforcing elements and thus nearby arranged the piston rod. Their deformation therefore takes place in primarily radially outwards.
- the spring In the undeformed state, the spring can preferably be a cylindrical one Have shape.
- the reinforcing elements can in particular be arranged equidistantly , which among other things means that there is no front and rear end of the spring there.
- the orientation the spring when assembling the device is therefore not critical.
- the reinforcing elements can advantageously be arranged in this way be that their mutual distance is about half their distance Corresponds to diameter.
- Fig. 1 shows a simplified longitudinal section through a Bolt thruster according to the invention.
- the bolt pusher according to the invention includes a rear housing 1 in which among other things, the facilities for feeding and igniting one Propellant charge are included. These details are not shown.
- the piston sleeve 2 is accommodated in the housing 1, which has a cylindrical space 3 on its inside forms.
- a driving piston 4 housed, with the help of seals, not shown is sealed off from room 3.
- the driving piston 4 can be moved in the cylinder space 3. This shifting movement is shown on the right in Fig. 1 of the Driving piston 4 ignited propellant charge.
- a ring element 5 made of elastomer material is accommodated, that abuts an end wall 6 of the head sleeve 11 and one Brake buffer forms.
- On the end wall 6 facing away Side of the brake buffer 5 is inside the sleeve 2 sliding brake cone 7.
- the brake cone 7 has one widening in a funnel shape in the direction of the driving piston 4 Inner opening 8.
- a piston rod 9 attached in its first to itself the driving piston 4 immediately adjacent half first diameter and in the following, for free end towards a second, again has reduced diameter.
- the return spring 10 is approximately sleeve-shaped and extends between the piston rod 9 having end face of the driving piston 4 and the corresponding opposite end face of the braking element 7.
- an outer head sleeve 11 placed a cylindrical interior 12 for receiving of the actual fastener.
- the floor of the cylindrical interior 12 has an opening, through which the front end of the piston rod 9 protrudes.
- the free end face 14 annular is formed and slightly opposite the front edge 15 of the Head sleeve 11 protrudes.
- the mounting sleeve 13 goes on their Device facing side in a radial flange 16 on the end face of which an elastomeric buffer 17 is attached.
- the return spring 10 has the shape of a cylindrical, elongated sleeve 18 made of elastomer material through corresponding openings of a variety of reinforcing elements 19 is vulcanized through.
- the reinforcement elements 19 are arranged at the same distance along the elastomer sleeve 18. They lie with their outer edges at a short distance in front of the inner wall of the cylindrical interior 3.
- the Reinforcing elements 19 have a central opening coaxially 20 in the form of a circular hole, with which they on the Piston rod 19 are lined up. The inside diameter of this Hole 20 corresponds approximately to the outer diameter of the thicker Area of the piston rod 9.
- the wall thickness of the elastomer sleeve 18 corresponds approximately to one A quarter to a third of the distance between the outer circumference the thicker part of the piston rod 9 and the inner diameter of the cylinder space 3 or the outer diameter of the driving piston 4.
- the arrangement of the elastomer sleeve 18 is chosen so that this near the central central opening 20 of the Reinforcing elements 19 is arranged.
- Fig. 1 shows the device in the starting position in which the Driving piston 4 to almost in front of the rear end of the cylinder space 3 is pushed. In this position, a fastener can inserted into the interior 12 of the head sleeve 11 will. The return spring 10 is relaxed. Now becomes Put a fastener a LPG cartridge ignited, the driving piston 4 moves at high speed from the starting position shown in the Setting position, i.e. 1 to the left. This leads to the return spring is compressed.
- Fig. 2 shows an enlarged plan view of a reinforcing element 19.
- the reinforcing element 19 has the shape of a metallic circular washer 21, for example made of aluminium.
- A is concentric with the central opening 20 Circle of smaller circular openings 22 are present.
- This Openings 22 correspond in their arrangement and their diameter the arrangement and the wall thickness of the elastomer sleeve 18.
- the elastomer sleeve 18 is passed through these holes 22 vulcanized, connecting with the metallic Discs 21 takes place. This creates one as a single Component trained spring due to the reinforcing elements secured in the arrangement of FIG. 1 against buckling is.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Springs (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Sawing (AREA)
- Wire Processing (AREA)
Abstract
Description
- Fig. 1
- einen schematischen Längsschnitt durch die wichtigsten Teile eines Bolzenschubgerätes nach der Erfindung;
- Fig. 2
- in vergrößertem Maßstab eine Stirnansicht eines als Ringscheibe ausgebildeten Verstärkungselementes für eine Feder der Anordnung nach Fig. 1.
Claims (16)
- Bolzenschubgerät mit1.1 einem Gehäuse (1),1.2 einem in dem Gehäuse (1) angeordneten, hin und her bewegbaren Treibkolben (4), der1.2.1 durch eine Treibladung antreibbar und1.2.2 zum Setzen eines Befestigungsmittels ausgebildet ist, sowie mit1.3 einer Feder (10) aus elastisch verformbarem Material, insbesondere aus Elastomermaterial, zum Zurückbewegen des Treibkolbens (4) nach dem Setzvorgang in seiner Ausgangsposition.
- Bolzenschubgerät nach Anspruch 1, bei dem der Treibkolben (4) eine Kolbenstange (9) mit verringertem Durchmesser aufweist, die über mindestens einen Teil ihrer Länge von der hülsenartig ausgebildeten Rückstellfeder (10) umgeben ist.
- Bolzenschubgerät nach Anspruch 1 oder 2, bei dem sich die Feder (9) zwischen einem die Bewegung des Treibkolbens (4) nicht mitmachenden Geräteteil (7) und dem Treibkolben (4) erstreckt.
- Bolzenschubgerät nach einem der vorhergehenden Ansprüche, bei dem die Feder (10) an einem mit dem Treibkolben (4) zusammenwirkenden Bremselement (7) für diesen angreift.
- Bolzenschubgerät nach einem der vorhergehenden Ansprüche, bei dem die Feder (10) eine Druckfeder ist.
- Bolzenschubgerät nach einem der vorhergehenden Ansprüche, bei dem die Feder (10) über ihre Länge verteilt sich nicht verformende Versteifungselemente (19) aufweist.
- Bolzenschubgerät nach Anspruch 6, bei dem die Versteifungselemente (19) während der Bewegung des Treibkolbens (4) von diesem und/oder der Laufbahn des Treibkolbens (4) geführt werden.
- Bolzenschubgerät nach Anspruch 6 oder 7, bei dem die Versteifungselemente (19) vorzugsweise aus Metall, Hartgummi oder Kunststoff bestehende Ringscheiben (21) sind, deren Außendurchmesser etwa dem Innendurchmesser der Kolbenlaufbahn und deren Innendurchmesser etwa dem Außendurchmesser der Kolbenstange (9) entsprechen.
- Bolzenschubgerät nach einem der Ansprüche 6 bis 8, bei dem die Verstärkungselemente (19) und die Feder (18) zusammen vulkanisiert sind.
- Bolzenschubgerät nach einem der Ansprüche 6 bis 9, bei dem die Feder (18) eine Wandstärke aufweist, die höchstens halb so groß ist wie die Differenz zwischen dem Radius der Verstärkungselemente (19) und dem Radius der Innenöffnung (20) der Verstärkungselemente.
- Bolzenschubgerät nach Anspruch 10, bei dem die Federhülse (18) näher an der Innenöffnung (20) der Verstärkungselemente als an deren Außenumfang angeordnet ist.
- Bolzenschubgerät nach einem der vorhergehenden Ansprüche, bei dem die Rückstellfeder (10) in unverformtem Zustand zylindrisch ist.
- Bolzenschubgerät nach einem der Ansprüche 6 bis 12, bei dem die Verstärkungselemente (19) äquidistant angeordnet sind.
- Bolzenschubgerät nach einem der Ansprüche 6 bis 12, bei dem die Verstärkungselemente (19) ungleichen Abstand voneinander aufweisen, insbesondere im Bereich der Enden der Feder einen kürzeren Abstand aufweisen.
- Bolzenschubgerät nach einem der Ansprüche 6 bis 13, bei dem der gegenseitige Abstand zweier benachbarter Verstärkungselemente (19) etwa ihrem halben Außendurchmesser entspricht.
- Feder für ein Bolzenschubgerät, mit einem oder mehreren der sich auf die Feder beziehenden Merkmale nach einem der vorhergehenden Ansprüche.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK97115895T DK0830920T3 (da) | 1996-09-19 | 1997-09-12 | Bolteislagningsapparat og tilbagetræksfjeder dertil |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19638341A DE19638341A1 (de) | 1996-09-19 | 1996-09-19 | Bolzenschubgerät und Feder dafür |
DE19638341 | 1996-09-19 | ||
US09/061,633 US6182881B1 (en) | 1996-09-19 | 1998-04-16 | Stud driver and spring therefor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0830920A1 true EP0830920A1 (de) | 1998-03-25 |
EP0830920B1 EP0830920B1 (de) | 2004-07-21 |
Family
ID=26029563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97115895A Expired - Lifetime EP0830920B1 (de) | 1996-09-19 | 1997-09-12 | Bolzenschubgerät und Rückstellfeder dafür |
Country Status (8)
Country | Link |
---|---|
US (1) | US6182881B1 (de) |
EP (1) | EP0830920B1 (de) |
CN (1) | CN1068818C (de) |
AT (1) | ATE271444T1 (de) |
DE (2) | DE19638341A1 (de) |
DK (1) | DK0830920T3 (de) |
ES (1) | ES2225921T3 (de) |
PT (1) | PT830920E (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0881042A1 (de) * | 1997-05-30 | 1998-12-02 | HILTI Aktiengesellschaft | Setzgerät mit Rückstellelement für den Treibkolben |
WO2023135041A1 (de) * | 2022-01-14 | 2023-07-20 | Fischerwerke Gmbh & Co. Kg | Bolzensetzgerät zum eintreiben eines befestigungselements in einen untergrund |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19800847A1 (de) * | 1997-12-04 | 1999-06-17 | Gerd Dr Ing Kellner | Gerät zum Setzen eines Befestigungselementes in einen Setzuntergrund und Verwendung des Gerätes |
DE10105886C2 (de) * | 2001-02-09 | 2002-12-05 | Hilti Ag | Kolbenhalterung |
US6779698B2 (en) * | 2001-10-15 | 2004-08-24 | Hwai-Tay Lin | Abrasion-resistant bumper for a nail-driving tool |
JP3818234B2 (ja) * | 2002-07-19 | 2006-09-06 | 日立工機株式会社 | 釘打機 |
DE10341384B4 (de) * | 2003-09-05 | 2016-06-23 | Hilti Aktiengesellschaft | Setzgerät |
US7726536B2 (en) * | 2004-04-02 | 2010-06-01 | Black & Decker Inc. | Upper bumper configuration for a power tool |
EP1674213B1 (de) * | 2004-12-23 | 2008-10-01 | BLACK & DECKER INC. | Kraftwerkzeug mit Kühlvorrichtung |
EP1674214B1 (de) * | 2004-12-23 | 2008-05-28 | BLACK & DECKER INC. | Kraftwerkzeuggehäuse |
DE602005007166D1 (de) * | 2004-12-23 | 2008-07-10 | Black & Decker Inc | Kraftwerkzeuggehäuse |
DE102005000179A1 (de) * | 2005-12-07 | 2007-06-14 | Hilti Ag | Hammerschlaggerät |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126630A (en) * | 1964-03-31 | T catlin | ||
US3301335A (en) * | 1964-04-20 | 1967-01-31 | Thomas E Snelling | Energy absorbing structure |
US3331546A (en) * | 1965-06-01 | 1967-07-18 | Olin Mathieson | Piston return and buffer system |
DE1939801A1 (de) * | 1968-08-05 | 1970-02-05 | Pierre Termet | Repetiergeraet mit einer Ausnutzung der Explosionskraft einer Treibladung |
US3969989A (en) * | 1973-08-02 | 1976-07-20 | Karl M. Reich Maschinenfabrik Gmbh | Impact buffer for impact drive tools |
EP0732178A1 (de) * | 1995-03-17 | 1996-09-18 | Adolf Würth GmbH & Co. KG | Bolzensetzgerät |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3099011A (en) * | 1955-08-11 | 1963-07-30 | Fastener Corp | Pneumatically operated tacker |
US2982536A (en) * | 1956-11-30 | 1961-05-02 | Mobay Chemical Corp | Spring |
DE1503045A1 (de) * | 1961-09-08 | 1969-12-11 | Olin Mathieson | Geraet zum Eintreiben von Befestigungsbolzen in Waende |
DE1603902A1 (de) * | 1965-09-02 | |||
CH453249A (de) * | 1965-11-09 | 1968-06-14 | Bauer Carl Fa | Bolzensetzgerät zum Eintreiben von Bolzen in Bauteile |
US3694018A (en) * | 1970-07-22 | 1972-09-26 | Gen Motors Corp | Elastomeric impact energy dissipator |
DE2221374C2 (de) * | 1972-05-02 | 1983-02-10 | Hilti AG, 9494 Schaan | Pulverkraftbetriebenes Setzgerät |
DE2927507C2 (de) * | 1979-07-07 | 1987-03-05 | Karl-Heinz 5090 Leverkusen Kerner | Bolzenschußapparat |
US4332340A (en) * | 1980-05-15 | 1982-06-01 | Olin Corporation | Piston tool buffer assembly |
US4566678A (en) * | 1982-08-27 | 1986-01-28 | Miner Enterprises | Polymeric apparatus and method of making the same |
US4858811A (en) * | 1985-11-21 | 1989-08-22 | Eldorado Cartridge Corporation | Power actuated tool with magazine feed |
FR2608493B1 (fr) * | 1986-12-23 | 1994-09-02 | Prospection & Inventions | Appareil de scellement a tir indirect |
DE19635312A1 (de) * | 1996-09-02 | 1998-03-05 | Hilti Ag | Setzgerät |
US5868384A (en) * | 1997-04-11 | 1999-02-09 | Miner Enterprises, Inc. | Composite elastomeric spring |
-
1996
- 1996-09-19 DE DE19638341A patent/DE19638341A1/de not_active Withdrawn
-
1997
- 1997-09-12 PT PT97115895T patent/PT830920E/pt unknown
- 1997-09-12 ES ES97115895T patent/ES2225921T3/es not_active Expired - Lifetime
- 1997-09-12 DK DK97115895T patent/DK0830920T3/da active
- 1997-09-12 AT AT97115895T patent/ATE271444T1/de not_active IP Right Cessation
- 1997-09-12 DE DE59711784T patent/DE59711784D1/de not_active Expired - Lifetime
- 1997-09-12 EP EP97115895A patent/EP0830920B1/de not_active Expired - Lifetime
- 1997-09-19 CN CN97121403A patent/CN1068818C/zh not_active Expired - Fee Related
-
1998
- 1998-04-16 US US09/061,633 patent/US6182881B1/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3126630A (en) * | 1964-03-31 | T catlin | ||
US3301335A (en) * | 1964-04-20 | 1967-01-31 | Thomas E Snelling | Energy absorbing structure |
US3331546A (en) * | 1965-06-01 | 1967-07-18 | Olin Mathieson | Piston return and buffer system |
DE1939801A1 (de) * | 1968-08-05 | 1970-02-05 | Pierre Termet | Repetiergeraet mit einer Ausnutzung der Explosionskraft einer Treibladung |
US3969989A (en) * | 1973-08-02 | 1976-07-20 | Karl M. Reich Maschinenfabrik Gmbh | Impact buffer for impact drive tools |
EP0732178A1 (de) * | 1995-03-17 | 1996-09-18 | Adolf Würth GmbH & Co. KG | Bolzensetzgerät |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0881042A1 (de) * | 1997-05-30 | 1998-12-02 | HILTI Aktiengesellschaft | Setzgerät mit Rückstellelement für den Treibkolben |
WO2023135041A1 (de) * | 2022-01-14 | 2023-07-20 | Fischerwerke Gmbh & Co. Kg | Bolzensetzgerät zum eintreiben eines befestigungselements in einen untergrund |
Also Published As
Publication number | Publication date |
---|---|
DK0830920T3 (da) | 2004-11-29 |
ES2225921T3 (es) | 2005-03-16 |
PT830920E (pt) | 2004-09-30 |
EP0830920B1 (de) | 2004-07-21 |
CN1068818C (zh) | 2001-07-25 |
ATE271444T1 (de) | 2004-08-15 |
DE19638341A1 (de) | 1998-03-26 |
US6182881B1 (en) | 2001-02-06 |
CN1181299A (zh) | 1998-05-13 |
DE59711784D1 (de) | 2004-08-26 |
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