DE1603921A1 - Device for driving fasteners into solid surfaces - Google Patents

Description

DR. ELISABETH JUNG AND DR. VOLKER VOSSIUS <i r; Γ) O Q O

PATENT LAWYERS 8 MUNICH 2 3- SIEGESSTRASSE 2β TELEPHONE 345067 TELEGRAM ADDRESS: INVENT / MONCHEN

C 332 (il / kä)
476 36? - WW

OLIiT MTHIESOH CHEMICAL CORPORATION .H York -ST.Y/''Vcew.Δ.

"Device for driving fasteners

in solid surfaces "

The invention relates to a device for. Driving in fasteners in masonry, concrete, HoXz, steel etc. " In particular, the invention relates to such a device, which is operated by means of a worker who duroh a Piston is transferred to the fastener.

For safety reasons, it is important with devices of this type that they cannot be fired if they are not held in a suitable manner against a suitable surface. Furthermore, it is special with such devices do you want them to be constructed? that no part of the

OO9884 / OOA2

Device can be thrown forward, e.g. as a result of a break when the working piston reaches its front target end position still contains excess kinetic energy, because z, B. the fastening means the workpiece surface has penetrated.

The invention therefore aims to provide a device that cannot be fired unless properly held against a suitable surface «

The invention also aims to provide a device in which a bruoh of the piston occurs less often than with known devices due to excessive kinetic energy.

In particular, the invention aims to provide a device which is designed in such a way that the working piston is retained in the device, even if it happens to be too kinetic Contains energy.

Another object of the invention is to provide a device with a buffer member to create that absorbs the energy of the sol, if this contains too much kinetic energy and is moved beyond its front target end position.

The invention thus relates to a device for driving fasteners into solid surfaces with a housing, a barrel part with a piston that can be moved back and forth in the axial direction, a fastener guide piece, a buffer housing _f a buffer member and a trigger _p that

009884/0042 BAD 0 ".! OiNAL

■ - 3

h; ί-l.em.sei nhr.-nt is that

a, dcß Lau.f- ^; oeil slidably movable back and forth front Jm, röhrenfi5'-ai _{; s part! the housing is arranged,

h ^! In the rear part of the housing, an ignition needle is movably arranged in an axial seal, which KUßanuaen works with a clamping cock and engages with a locking lug in a slot in the clamping cock

ο) the cocking cock a spring rait a forward force * is arranged _P

d) the cock has a front part, which extends into the front tubular toi ?, of the housing and engages the running parts at the rear _f

f - ^s eats disposed around the front end of the tubular front part of the casing a stepped, axially movable sleeve, the rear end position is limited in relation to the housing by stop means and which is guided via guide means with a certain play in the axial direction against the running part ,

f) the buffer member consists of polyurethane elastomer material and Close from all sides to the fastening material and vcm buffer housing is surrounded,

g) the trigger hook part of the trigger with the iiastnaee of the firing pin is aligned when the stepped sleeve is in its rear end position with respect to the housing and its

• Front face with the front face of the Be festiguiii'sraittelftüirungsstücks completes.

■ 00988W0C42

In a preferred embodiment of the invention The device is a piston arranged in a barrel part and provided with a head part and a push shaft part. The device is provided with a fastening element guide piece extends from the running part to the front, as well as with a buffer housing, that is attached to the muzzle end of the barrel part and that Surrounds fastener guide piece. A "buffer link from a polyurethane elastomer material that is tight on all sides surrounded by the fastener guide piece and / or "from the buffer housing The bore of the fastener guide piece is also provided can have a conically flared section into which a correspondingly tapered section of the butt shank part of the piston engages when it is driven out of its front target end position as a result of excessive energy content will. The kinetic energy of the piston is transferred to the buffer member through the fastener guide piece transmitted and absorbed by it.

A stepped sleeve can be the fastener guide piece and surround the buffer housing. The running part can be pressed against the stepped sleeve and the housing by means of a cock, which is operated by a spring is pushed forward, moved forward. In this position the ignition needle cannot be triggered. unless the device is suitably held against a suitable surface. "The invention is hereinafter described a preferred embodiment and on the basis of the enclosed Drawings explained in more detail.

BATH ORIGINAL

009884/0042

Pig o 1 is a longitudinal section through a device according to the invention which is held against a suitable workpiece surface is and is excited.

Figure 2 is a cross section taken along line 2-2 of Pig.

FIG. 3 is a cross-sectional view taken along line 3-3 of FIG

Fig, 1, · '' ■■ '■■■'. "

Pig. 4 is "a longitudinal section through a device according to FIG. 1, the device being inclined towards the surface of the material

Figo 5 is a longitudinal section through a device according to Fig. 1, in which the parts of the device are in that position that they occupy when the shutter is open.

1 shows a device according to the invention with a housing 2 which consists of a tubular front part 4 and a rear part 6. The tubular front part 4 has an elongated opening 7. The rear part 6 surrounds the firing mechanism 8 and comprises a pistol grip 10 and a trigger guard bar 12. The ignition mechanism 8 comprises a pushing base 14 with a frustoconical luehung 16, behind the pushing base 14 is a 2ündnadel 18 which has a conical tip 20 _p, a body part 22 and a rearwardly extending bolt-shaped extension 24. The ignition needle 18 is pushed forward by a spring 26. A detent 28 extends radially downward from the body part 22 of the ignition needle. -The location 28 can be of a not shown

009 & aA / 00A2 -.

Spring to be pushed outwards.

In the rear part 6 of the housing 2 there is a cock 30 in axial direction. movably arranged. The cock 30 has a front part 32 »which extends through the bottom 14 into the extending into the front tubular part 4 of the housing 2, A suitable spring 34 acts on the cock 30 with a forward force. The cock shows furthermore a recess 35 through which the detent 28 of the ignition needle 18 can extend, within the trigger guard 12, a trigger is articulated by means of a pivot pin 40 and has a trigger part 38, which acts on the trigger 36 the spring force of a spring 42.

In the front tubular rope 4 of the housing 2 is a running part 44 back and forth with a barrel bore 46 in the axial direction slidably arranged The encrypted end of the running part 44 has a cartridge chamber 48 for receiving a cartridge 50. Furthermore, the running part 44 has an elongated Z ~ The slot consists of a short section 52 extending in the axial direction at the mouth end of the barrel part 44, a circumferentially extending section 54 and a relatively long section 56 extending in the axial direction. The latter extends from the section 54 from backwards to close to. the lock side End of the barrel part 44 · One In the front part 4 of the Housing 2 screwed-in barrel guide screw 58 extends eiöL into the Z slot and thus guides the barrel part 44 at his axial or during its rotary movement against the housing 2.

OQ 9 8 8 A / 0 0 4 2 BAD original

Eats into the barrel bore 46 of barrel / part 44 a in the axial Rich ~ ^ TXIN reciprocally movable piston 60 disposed canoe The piston 60 comprises a cylindrical head portion 62 and an elongated cylindrical Stoßßchaftteil 64 are of smaller diameter. Halfway along its length, the push-on adhesive part 64 has a conically tapering section 66. A piston ring 68 can be arranged in a groove 70 of the head part 72.

A buffer housing 72 is detachably attached to the barrel part 44 by means of two locking lugs 74 and 76 interlocking like a bayonet lock on the barrel part 44 or on the buffer housing 72. The buffer housing 72 is secured by a bolt 78 against unintentional rotation in relation to the running part 44_. In series of a preferred embodiment of the invention, the bolt 8 consists of a flat part 8p and an upstanding collar 82. The bolt 78 is arranged in a hat 84 on the outside of the barrel part 44 and is pressed forwards by a spring 86. The upstanding collar 82 is noinraen of a mating recess 87 in the rear of the buffer housing 72 listed A. The buffer housing 72 has a first cylindrical bore 88 with a diameter that is larger than the diameter of the barrel bore 46 of the barrel part 44, and a 2. cylindrical bore 90, the diameter of which is smaller than or equal to the diameter of the barrel bore 46 of the barrel part 44. The transition of the bores 88 and 9C is formed by an inner shoulder 92 «

A fastener guide piece 94 is located in the buffer housing 72 arranged with a bore 95 extending in the longitudinal direction. The fastening means 94 has a cylindrical

98 84/00 42 bad original

Lindrian part 98, the diameter of which is almost equal to that Diameter of the second bore 90 of the buffer housing 72 is. The rear end of the fastener guide 94 has an annular collar 96, the outside diameter of which is practical equal to the inner diameter of the first cylindrical bore of the buffer housing8 72. The annular collar 96 can at its rear edge be butt-beveled and with its beveled part 98 in a correspondingly shaped hollow-conical counterbore 100 engage at the mouth end of the barrel part 44. The bore 95 in the fastening means guide piece 94 has a conically widening section 102, which corresponds to the tapering section 66 of the push shaft part 64 of the piston 60 is shaped.

Between the wall of the first bore 88 of the buffer housing 72 and the cylindrical part 98 of the fastener guide piece 94 a buffer member 104 is arranged «As in particular from the Pig. 1, 4 and 5, this extends Buffer member 104 in the axial direction of the annular collar 96 of the fastener guide piece 94 to the inner shoulder 92j which is the transition between the bores 88 and 90 dec buffer housing 72 forms. From the above it can be seen that the buffer member 104 surrounded on all sides by the buffer housing on the one hand and the fastening element guide piece on the other is.

The buffer member 104 is designed as a hollow cylinder, which consists of a polyurethane elastomer material _{f daf?} e.g. by Un>. <* an organic diisocyanate with a polyhydros: y «

0 0 9 8 8 4/0 0 4 2 bad original.

compound in the presence of a suitable crosslinking agent and ans ^ hliessendes curing of the reaction product is made.

Suitable organic diisocyanates are ζ, Β. m ~ * and p ~ phenylenedi <"isocyanate toluene diisoeyanate _t p, p '- liphenyl diisocyanate and substitution products of these compounds, .Β, ρ, ρ * -diphenyl-3 _r 3 ^? -dimethyl (or -dimethoxy.) -diisooyanate, 1, S-naphthalene diisocyanate ^ i ^ '- diphenylmethane diisocyanate and tetra-, penta * -, hexa-f, plepta · ", and octamethylene-6i, <y'-diisocyanate _o Also semi see of diisoeyanates and" triisoeyanates as well as organic isothiocyanates, eg pyp'-phenylenediisothiocyanate ^ can be used *.

Examples of suitable polyhydroxy compounds are polypropylene glycol, polyhutylene glycol, other polyalkylene glycols made from alkylene glycols with 3 or more carbon atoms in the glycol, and mixed polyglycols _P which are linear, have a molecular weight of at least 600 and at least 20 $> contain propylene oxide units with 3 or more carbon atoms »Furthermore, condensation products of pentaerythritol and polyglycols with a content of preferably less than 5 $> pentaerythritol and a molecular weight of at least! 000, Polymerized letrahydrofuran / can also be used.

According to a preferred embodiment of the invention, as Polyurethane elastomer material from a cured reaction product Tolttoldiisoeyanat and polymerized tetrahydrofuran, implemented in the presence of methylene bis ^ crthochloranilin be used.

84/0042 "BAD PfSGINAL

A hollow cylindrical, stepped sleeve 106 is arranged so that that they the fastener guide piece 94 »the buffer housing 72 and a part of the front, tubular part 4 of the housing 2 surrounds, as can be seen from the drawing, v / eist the stepped sleeve 106 has a first hollow cylindrical part 108 which has an inner diameter which is slightly larger than that Outside diameter of fastener guide piece 94. A »Further hollow cylindrical part 110 has an inner diameter which is practically the same as the outer diameter of the buffer housing · ses 72 and the tubular front part 4 of the housing 2 A screw 112 attached to the buffer housing 72 extends through an elongated slot 114 in the stepped sleeve 106, The screw 112 guides the offset sleeve against the buffer housing 72 in the circumferential directionρ, however, allows a be limited axial movement of these two components against each other.

The stepped sleeve 106 is further provided with a recess 116 _F · the -umgibt the screw head of LauffÜhrungssehraube 58, which is attached of the casing 2 in the tubular front part. 4 The recess 116 is designed in such a way that it prevents a movement of the stepped sleeve 106 against the front tubular part 4 of the housing 2 in the mutual circumferential direction and from outside in Pig. 1 shown mutual position of the two components from an axially forward movement of the stepped sleeve 106 is allowed.

When working with the device according to the invention, a Fastening means 118 in a counterbore 120 at the mouth end des- FasteningSDiittelführungSstücksstück 94 inserted »The Be

009884/0042 '"-Bath original-

Fastening means 118 can consist of an enlarged head 122 and order a weaker shaft 3 24 ,, onto the front end of the The shaft 124 can have a plastic tip, washer or a another such part "126 be put on, which is connected to a fiingburid-128. is provided * with which the fastening means 118 Centered in the Bafeatigungsmittelfiihrungsstück 94.

When the front end of the fastener guide piece is against a suitable material surface 130 is set, you have to use the Push the device forwards using the Piatolen handle β 10 so that dasa the housing 2 against the fastener guide-liok 94 and the purchase part 44 moved forward. If the device is pushed forward in this way, the rear side engages of the running part 44 at the front end 32 of the cock 30 and moves the cock 30 against the housing 2 to the rear. There the locking lug 28 engages in a slot 35 in the cock 30, the forward movement of the device causes the ignition needle 18 backwards against the spring force of the spring 26 assigned to it moved into the position shown in FIG. The device can now be fired by pulling the trigger 36. " Pulling the trigger "pushes the suction hook part 38 the locking lug 28 from the slot 35 in the cock 30, whereupon the ignition needle 18 forward under the action of the spring force of the spring 26 rushes; The tip 20 passes through the truncated conical Opening 16 in the butt plate 14 and strikes the cartridge 50.

However, if the device, after first plan on the Material surface 130 is placed, then over a a certain angle out of the way shown in Pig, 4, . : 809884 / ÜC42 '.'. "■.; BAD .ORIGINAL

so dfr cock 30 presses the running part 44 together with the Puffergehau.se 72, the buffer member; 104 and the fastener guide piece 94 relative to the stepped sleeve 106 and the housing 2 to the front = If the individual construction elements are in this mutual position *, the device can pass through pulling the trigger cannot be fired because the trigger hook part 58 of the trigger 36 then not so with the bast nose 28 is aligned »that it acts on them and can push them out of their engagement in the slot 35 of the cock 30, whereby the ignition needle 18 would be released.

A further securing of the inventive device, is darinf that the remote Hülee 106 _f when they are moved against the casing 2 rearward, in the tubular front part 4 ansehlägt with the edge 134 of the recess 116 at the head of the running lead screw 58 of the housing 2, llimrat the offset sleeve 106 in relation to the housing 2 is in this position, the buffer housing 72 _r the fastening means guide piece 94 = the buffer member 104 and the running part 44 against the housing 2 shifted backwards, however, these parts are in this position only by one Part of the distance offset backwards ^ which is necessary to move the cock 30 and the ignition needle 18 so far backwards ^ that the nose 28 of the ignition needle 18 is aligned with the trigger hook part 38 of the trigger 36 in a suitable manner. The device cannot be fired if it is not held against a suitable surface,

BATH

009884/0042

- ■ -15

Once the device has been fired and the fastening means 118 driven in, the stepped sleeve 106 can be rotated against the housing 2 so that the barrel guide screw 58 slides into the relatively long, axially extending section 56 of the socket head part 44 can. Then you can move the stepped sleeve 106 against the housing 2 axially forwards, taking _{along the fastener guide piece 94, the buffer housing 72 5,} the buffer member 104 and the running part 44 ο During the forward movement of these components, the position of the piston 60 remains in relation to the housing 2 unchanged, since the running lead screw 58 which extends into the barrel bore 46 de _S barrel portion 44, engaging the head portion 62 of the piston 60 and this holds ,,

Pig »5 indicates the location of the various components of the device take according to the procedure described above =. The barrel part 44 has moved so far forward that the The head 62 of the piston 60 rests against the rear wall 136 of the barrel bore 46 in the barrel part 44. In addition, the cartridge chamber 48 is now through the elongated loading opening 7 in the front part 4 of the housing 2 accessible «, '

You can now remove the used cartridge and insert a new cartridge into the chamber 48. Then you can see the stepped sleeve 106 against the pistol grip of the device by, move backward until the guide barrel coulter screw 58 at the front end of the relatively long _p calibrated axially extending portion 56 of the Z-slot abuts. Then, the sleeve 106 remote overall against the housing 2 in Umfangsriohtung

0 0 9 8 8 4/0 0 4 2 bad original

rotates v / ground * where they milnimmt the running part 44 until it adopts a position _f in which the laufführungaschraiibe 58 in the comparatively. short, axially extending portion 52 of the Z'Schlitaes can slide. The device can now be etched again against a suitable workpiece surface and is ready for the next shot.

If the piston 60 still contains excess kinetic energy when it reaches its front target end position, e.g. because the fastening means has penetrated too deeply or has even penetrated the workpiece, the tapering section 66 of the Push shaft 64 in the conically widening part 102 of Bore 95 of the fastener guide piece 94. the Energy of the piston 60 is then via the collar 96 of the Be fastening means guide piece 94 onto the buffer member 104 Polyurethane elastomer material transferred to and absorbed by it It is particularly important that the buffer member 104 τοη all sides tight through the buffer housing 72 and dat? Bsfestigungß = - center piece 94 is surrounded * By this arrangement, if Piston 60 acts on fastener guide piece 94 and to move this forward against the buffer housing 72 t; meh> ~ tetj no flow of the polyurethane elastomer face of the buffer member 104 occur so that the buffer member the excess Energy absorbed by the piston and very little expressed in the process will.

The use of a buffer member 104 made of polyurethane elastomer material offers several advantages that known devices

BATH ORIGINAL 0 098 84/0 0A2 '.

did not show «Ba was found» that "on repeated Exceeding the front target end position of the piston and demgeroäso l> in one of the most extreme cases of the puffed-up song Polyurethane elastomer material around the buffer link is not permanent is deformed or compressed in such a way that it does not need to be replaced after any such stress, as is the case with " the lierköiasiliohen buffer members made of rubber or other Plastic materials that were X ^ aIl.

Due to the design and arrangement of the housing 2, the running part 44 * of the fastening means 94 _{f of} the detachable sleeve 10-6 and the buffer housing 72, there is the advantage that the device in accordance with the invention cannot be inserted into the device by otherwise actuating the / t Air fired l: aÄEi _r nooh that accidentally a shot can be fired * whom; the device is dropped or the device is cut out by violently moving the purchase part out of its position with the loading door open and into its bag with the loading opening closed when the device is tilted against the workpiece surface beyond a certain angle.

Iatent Approvals

- ■ ■■■■■: _ "■■ '. *. BAD-OSJGiNAL

Claims (1)

P ate nt to ep rü c he I ₆ 'device aum driving Befesiigungsmitteln in solid surfaces with eineai housing, a drive part with it in the axial direction back and forth moving piston _t a Befestigungsini ttelfÜhrungsstück _f a buffer housing, a Püfferglied and a trigger _P dad u rchgeke η η ζ calibration η et _f that a) the barrel part (44) sliding back and forth in the front? tubular part (4) of the housing (2) is arranged, b) in the rear part (6) of the housing (2) a firing needle (18) is arranged movably in the axial direction »the one with a Tension cock (30) interacts and engages with a locking lug (28) in a slot (35) in the tension cock (30), c) a spring (34) with a forward force is assigned to the clamping bar (30), d) the cock (30) has a front part (32) which extends into the front, tubular part (4) of the housing (2) extends in and engages the rear (132) of the running part (44), e) a stepped, axially movable sleeve (106) is arranged around the front end of the tubular front part (4) of the housing (2), the rear end position of which is limited in relation to the housing (2) by stop means (116, 58) and the via guide means (112 » 114) with a certain. Play is guided in the axial direction against the running part (44),. f) the buffer member (104) is made of polyurethane las tomenamaterial and is tight from all sides from the fastening means (94) and is surrounded by the buffer housing (72), 009884/0042 bad oasGiMAL g) the trigger hook part (38) of the trigger (36) with the locking lug (28) the Zündnadol (18> is aligned when the stepped sleeve (io6) is in its rear end position in relation to the Housing (2) is located and its front face with the front face of the fastener guide piece (94) concludes, - 2 β device according to claim 1 _P characterized by a Z-slot in the running part (44) with a first, axially extending section {52} _s, a second, 'offset in the circumferential direction, also axially extending section (56) and a these two sections connecting, extending in the circumferential direction section (54) and a barrel guide screw (58) attached to the housing (2), which extends through the Z »slot into the barrel bore (46) of the barrel part (44) 3 ». Execution according to claims 1 and 2, characterized in that «= ■ -k β ώ. η ζ e Ic h η et that the buffer housing (72) is detachably attached to the orifice end of the barrel part (44), preferably by means of locking lugs (74s 76) interlocking like a bayonet on the barrel part (44) and on the buffer housing (72) _B. the buffer housing (72) against twisting against the running part (44) by means of a spring (86) which is arranged in a groove (84) of the running part (44) and is pushed forward with an upstanding collar (82). * nehiaung (87) of the buffer housing (72) _s engaging bolt (78) is secured. - BAD ORKSiMAL 0 09884/0042 4o performing according to any of claim 1 3 characterized geke _{f v} η η ζ η et calibration, DASB the buffer member (104) is formed as a hollow cylinder. · 5ο device according to claim 4? characterized in that the buffer housing has an inner shoulder (92) land the fastener guide piece (94) a Rizi & bund (96) up / down and that the hollow cylindrical buffer member (104) in the axial direction between the collar (96) and inner shoulder (92) extends. 6, apparatus according to claim 1 to 6, characterized ^ sk e η η ζ e ⁴ - ο hn ö t _P that a bore (95) de 3 Be festigungsmittelführungßstlicks (94) a conically erv; suppurating portion (102) to v / eist _r of the piston ', 6O), partly (64) engages the conically tapering portion (66) of the StoSschäft- ,, when it proceeds its front Sollsndlage ü in the _a . - 'BAD ORKBiNAL Q0988A / 00A2 ft Let L ee γ be f e