EP0830920B1 - Bolzenschubgerät und Rückstellfeder dafür - Google Patents
Bolzenschubgerät und Rückstellfeder dafür Download PDFInfo
- Publication number
- EP0830920B1 EP0830920B1 EP97115895A EP97115895A EP0830920B1 EP 0830920 B1 EP0830920 B1 EP 0830920B1 EP 97115895 A EP97115895 A EP 97115895A EP 97115895 A EP97115895 A EP 97115895A EP 0830920 B1 EP0830920 B1 EP 0830920B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- driver according
- stud driver
- stiffening elements
- spring
- 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.)
- Expired - Lifetime
Links
- 230000033001 locomotion Effects 0.000 claims abstract description 12
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 6
- 239000013536 elastomeric material Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920001875 Ebonite Polymers 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 230000001141 propulsive effect Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 description 15
- 229920001971 elastomer Polymers 0.000 description 8
- 239000000806 elastomer Substances 0.000 description 8
- 239000003380 propellant Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000018109 developmental process Effects 0.000 description 5
- 230000002787 reinforcement Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 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
Definitions
- the invention is based on a bolt-setting or pushing device, with the help of which a fastener, usually in the form of a nail or bolt can be.
- the bolt pusher contains a propellant piston that passes through the propellant gases after ignition of a cartridge and driven by its Feed movement drives the bolt.
- a bolt-driving tool of this type is already known (US Pat. No. 3,331,546), in which this purpose, a variety of disc springs around a piston rod Driving piston is arranged.
- the plate springs preferably consist of Polyurethane and are alternately arranged upside down, so that one Disc spring package from disc springs that are not connected.
- the return spring can be integrally formed as a cylindrical sleeve, so that the restoring force results from compression of the restoring spring. she can also from several individual parts arranged between rigid elements be constructed.
- a return spring is present, the is designed as a cylindrical sleeve.
- the restoring force is also here Compression of the return spring causes.
- 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 part of the device and the driving piston.
- 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 you set of 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 approximately 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 is 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 inside 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 reinforcement elements and therefore 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 ends 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 size 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 including 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 to be moved in the cylinder space 3. This shifting movement is indicated by a 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 located 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 projects.
- 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 become. 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.
- the deforms Sleeve 18 only in the area between the reinforcing elements 19, in which the material primarily deforms outwards becomes.
- the spring 10 is shortened like an accordion, whereby the deformation of the elastomer sleeve 18 evenly over the Length of the spring is distributed.
- 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. Concentric to the central opening 20 is one Circle of smaller circular openings 22 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)
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 (15)
- 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 Rückstellfeder (10) aus elastisch verformbarem Material, insbesondere aus Elastomermaterial, zum Zurückbewegen des Treibkolbens (4) nach dem Setzvorgang in seiner Ausgangsposition,1.4 die über ihre Länge verteilt sich im wesentlichen nicht verformende Versteifungselemente (19) aufweist
dadurch gekennzeichnet, dass1.5 der Elastomerteil der Rückstellfeder (10) einstückig ausgebildet ist und1.6 die Form einer Federhülse (18) aufweist. - 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 Rückstellfeder (10) 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 Rückstellfeder (10) an einem mit dem Treibkolben (4) zusammenwirkenden Bremselement (7) für diesen angreift.
- Bolzenschubgerät nach einem der vorhergehenden Ansprüche, bei dem die Rückstellfeder (10) eine Druckfeder ist.
- Bolzenschubgerät nach einem der vorhergehenden Ansprüche, bei dem die Versteifungselemente (19) während der Bewegung des Treibkolbens (4) von diesem und/oder der Laufbahn des Treibkolbens (4) geführt werden.
- Bolzenschubgerät nach einem der vorhergehenden Ansprüche, 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 vorhergehenden Ansprüche, bei dem die Verstärkungselemente (19) und die Federhülse (18) zusammen vulkanisiert sind.
- Bolzenschubgerät nach einem der vorhergehenden Ansprüche, bei dem die Federhülse (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 9, 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 vorhergehenden Ansprüche, bei dem die Verstärkungselemente (19) äquidistant angeordnet sind.
- Bolzenschubgerät nach einem der Ansprüche 1-11 bei dem die Verstärkungselemente (19) ungleichen Abstand voneinander aufweisen, insbesondere im Bereich der Enden der Feder einen kürzeren Abstand aufweisen.
- Bolzenschubgerät nach einem der vorhergehenden Ansprüche, bei dem der gegenseitige Abstand zweier benachbarter Verstärkungselemente (19) etwa ihrem halben Außendurchmesser entspricht.
- Aus Elastomermaterial bestehende Feder zum Zurückbewegen des Treibkolbens (4) eines Bolzenschubgeräts nach einem der Ansprüche 1-14 nach einem Setzvorgang in dessen Ausgangsposition, mit über ihre Länge verteilten sich im wesentlichen nicht verformenden Versteifungselementen (19), dadurch gekennzeichnet, dass der Elastomerteil der Feder (10) einstückig ausgebildet ist und die Form einer Federhülse (18) aufweist.
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 |
|---|---|---|---|
| DE19638341 | 1996-09-19 | ||
| DE19638341A DE19638341A1 (de) | 1996-09-19 | 1996-09-19 | Bolzenschubgerät und Feder dafür |
| US09/061,633 US6182881B1 (en) | 1996-09-19 | 1998-04-16 | Stud driver and spring therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0830920A1 EP0830920A1 (de) | 1998-03-25 |
| EP0830920B1 true 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) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19722795A1 (de) * | 1997-05-30 | 1998-12-03 | Hilti Ag | Setzgerät |
| 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 |
| EP1674212B1 (de) * | 2004-12-23 | 2008-05-28 | BLACK & DECKER INC. | Kraftwerkzeuggehäuse |
| EP1674214B1 (de) * | 2004-12-23 | 2008-05-28 | BLACK & DECKER INC. | Kraftwerkzeuggehäuse |
| EP1674213B1 (de) * | 2004-12-23 | 2008-10-01 | BLACK & DECKER INC. | Kraftwerkzeug mit Kühlvorrichtung |
| DE102005000179A1 (de) * | 2005-12-07 | 2007-06-14 | Hilti Ag | Hammerschlaggerät |
| WO2023135041A1 (de) * | 2022-01-14 | 2023-07-20 | Fischerwerke Gmbh & Co. Kg | Bolzensetzgerät zum eintreiben eines befestigungselements in einen untergrund |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3694018A (en) * | 1970-07-22 | 1972-09-26 | Gen Motors Corp | Elastomeric impact energy dissipator |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3126630A (en) * | 1964-03-31 | T catlin | ||
| 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 |
| 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 |
| DE1603902A1 (de) * | 1965-09-02 | |||
| CH453249A (de) * | 1965-11-09 | 1968-06-14 | Bauer Carl Fa | Bolzensetzgerät zum Eintreiben von Bolzen in Bauteile |
| FR1600417A (de) | 1968-08-05 | 1970-07-27 | ||
| DE2221374C2 (de) * | 1972-05-02 | 1983-02-10 | Hilti AG, 9494 Schaan | Pulverkraftbetriebenes Setzgerät |
| DE2339163C2 (de) * | 1973-08-02 | 1975-01-30 | Karl M. Reich, Maschinenfabrik Gmbh, 7440 Nuertingen | Schlagpuffer für Einschlaggeräte |
| 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 |
| DE19509763A1 (de) * | 1995-03-17 | 1996-09-19 | Adolf Wuerth Gmbh & Co Kg | Bolzensetzgerät |
| 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 EP EP97115895A patent/EP0830920B1/de not_active Expired - Lifetime
- 1997-09-12 AT AT97115895T patent/ATE271444T1/de not_active IP Right Cessation
- 1997-09-12 ES ES97115895T patent/ES2225921T3/es not_active Expired - Lifetime
- 1997-09-12 DK DK97115895T patent/DK0830920T3/da active
- 1997-09-12 PT PT97115895T patent/PT830920E/pt unknown
- 1997-09-12 DE DE59711784T patent/DE59711784D1/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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3694018A (en) * | 1970-07-22 | 1972-09-26 | Gen Motors Corp | Elastomeric impact energy dissipator |
Also Published As
| Publication number | Publication date |
|---|---|
| US6182881B1 (en) | 2001-02-06 |
| ATE271444T1 (de) | 2004-08-15 |
| DE19638341A1 (de) | 1998-03-26 |
| PT830920E (pt) | 2004-09-30 |
| EP0830920A1 (de) | 1998-03-25 |
| DE59711784D1 (de) | 2004-08-26 |
| CN1181299A (zh) | 1998-05-13 |
| DK0830920T3 (da) | 2004-11-29 |
| CN1068818C (zh) | 2001-07-25 |
| ES2225921T3 (es) | 2005-03-16 |
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