EP0235083B1 - Outil de scellement actionné par la poudre - Google Patents

Outil de scellement actionné par la poudre Download PDF

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Publication number
EP0235083B1
EP0235083B1 EP87810082A EP87810082A EP0235083B1 EP 0235083 B1 EP0235083 B1 EP 0235083B1 EP 87810082 A EP87810082 A EP 87810082A EP 87810082 A EP87810082 A EP 87810082A EP 0235083 B1 EP0235083 B1 EP 0235083B1
Authority
EP
European Patent Office
Prior art keywords
housing
muzzle
shoulders
setting tool
muzzle part
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
EP87810082A
Other languages
German (de)
English (en)
Other versions
EP0235083A3 (en
EP0235083A2 (fr
Inventor
Theo Gassner
Peter Von Flue
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.)
Hilti AG
Original Assignee
Hilti 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 Hilti AG filed Critical Hilti AG
Priority to AT87810082T priority Critical patent/ATE75984T1/de
Publication of EP0235083A2 publication Critical patent/EP0235083A2/fr
Publication of EP0235083A3 publication Critical patent/EP0235083A3/de
Application granted granted Critical
Publication of EP0235083B1 publication Critical patent/EP0235083B1/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
    • B25C1/08—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
    • 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
    • B25C1/143—Hand-held nailing tools; Nail feeding devices operated by combustion pressure generated by detonation of a cartridge acting on an intermediate plunger or anvil trigger operated
    • 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
    • B25C1/18—Details and accessories, e.g. splinter guards, spall minimisers
    • B25C1/182—Feeding devices
    • B25C1/184—Feeding devices for nails

Definitions

  • the invention relates to a powder-powered bolt gun with a laterally projecting handle housing, an ignition mechanism with a tension spring in the housing, a projecting in the setting direction mouthpiece with a non-circular circumferential contour that is displaceable relative to the housing against holding stops in a front and against a sling in a rear position , and a pressure sensor which is displaceable with respect to the mouth part in an ignition readiness position exciting the tension spring, the free end face of which, in the ignition readiness position, is flush with the free end face of the mouth part located in the rearward position.
  • Powder-operated bolt setting tools are used to drive nails and the like fasteners into hard ground, such as concrete, steel, at high speed.
  • the setting tools have pressing devices which only enable a setting process to be triggered if the setting device is pressed against the ground with a mouthpiece.
  • the pressing device has a tubular contact pressure sensor which is displaceably mounted in the mouth part and which, when the setting tool is in the rest position, projects forward over the free end face of the mouth part, that is to say in the setting direction, and its central bore is concentric with the driving axis.
  • a guide bush for a driving piston acts on the rear end face of the pressure sensor, which in turn is acted upon in the setting direction by a tension spring of an ignition mechanism.
  • the guide bush is slidably mounted in a housing and is pushed back under pressure conditions by the pressure sensor against the force of the tension spring back to the ignition ready position.
  • the mouth part is non-rotatable in the housing and axially displaceable to a limited extent.
  • stop stops which come into contact with one another and to limit the displacement path to the rear interacting stop means are provided on the mouth part and on the housing.
  • the installation of the mouth part in the specific rotational position requires auxiliary tools and, overall, considerable assembly effort. Removing and installing the mouth part, for example to change the driving piston, is therefore very complex.
  • fasteners in narrow profile rails or the placement near and along a wall requires a non-circular circumferential contour of the mouth area of the mouth part.
  • a laterally protruding handle of the housing is in a defined rotational position in relation to the non-circular mouth area.
  • the invention has for its object to provide a generic, powder-powered bolt gun with laterally protruding handle, mouth part and pressure device, which has a sliding pressure sensor relative to the mouth part, which allows a quick change of the mouth part without auxiliary tools and also a proper grip in every application the handle allows.
  • a rotatability of the mouth part in relation to the housing permits the one suitable for the respective application Position of the handle.
  • the rotatability of the mouth part which is axially displaceable to a limited extent results from the fact that the radian of the clear width of the receiving openings is greater than the radian of the outer contour of the stop elements.
  • the mouth part is inserted into the housing in the position in which the receiving elements are opposite the stop elements in the axial projection.
  • the stop elements can be immersed in the receiving openings until the stop means of the mouth part and housing run onto one another and prevent further insertion.
  • the holding stops formed by shoulders on the mouth part and counter-shoulders on the housing are mutually axially at least around the dimension of the stop elements which project axially beyond the stop plane of the stop means and overlap one another in axial projection.
  • the contact pressure sensor By pressing the setting tool against a surface on the muzzle side, the contact pressure sensor is shifted backwards in the ignition-ready position and thereby tensioning the tensioning spring of the ignition mechanism.
  • the ignition-ready position is reached when the free end face of the pressure sensor is flush with the free end face of the mouth part located in the rearward position.
  • the shoulders and counter shoulders are brought out of the mutual overlapping position.
  • the mouthpiece can then be removed.
  • the rotational positions of the mouth part which exclude the overlapping of shoulders and counter shoulders, it is not possible to move the mouth part to the rear position to move, since the stop elements run axially on the areas of the end face of the other part which serve as stop means.
  • the unlocked rotational position of the mouth part it is consequently impossible to move the pressure sensor into the ignition-ready position.
  • the receiving openings are preferably arranged on the housing and the stop elements on the mouth part.
  • Cams are suitable as stop elements, which can be fixed interchangeably on the base body of the mouth part.
  • the shoulders on the mouth part are formed by an end face, which is exposed to the mouth, of a guide connecting piece which adjoins the stop means against the setting direction.
  • the shoulders can be created by the rear axial outlet in cross-section essentially sickle-like recesses and are expediently in the axial projection to the stop elements.
  • the counter shoulders on the housing are formed by an end face which is exposed towards the ignition mechanism and has latches which are radially inserted into a receiving bore for the guide stub.
  • the bolts can be mounted in a stationary part of the housing or in a housing-side receiving body that can be displaced to a limited extent, normal to the driving-in axis.
  • the bolts are advantageously pressed radially against the guide stub by spring means.
  • the shoulders and counter shoulders must be brought out of their effective overlap. This is accomplished by disengaging the bolts, for which purpose, according to a preferred embodiment, control cams for the bolts which are radially approaching the circumference of the guide socket in the circumferential direction of the shoulders are provided on the mouth part on the mouth side.
  • the bars can then be disengaged after the opening part has been pulled forward to extend the stop elements from the receiving openings by partially turning the opening part. In the disengaged position, the bolts rest on the round circumferential contour of the guide socket, so that the mouth part can be pulled off to the front.
  • the control cams can form the base of the crescent-like recesses. Through a stepwise transition in the circumferential direction from the base of the recesses into the round circumferential contour of the guide socket, in cooperation with the bolts which are radially supported on the mouth part under spring force, a rotation limitation of the mouth part which can only be overcome by applying an increased torque is achieved. The mouth part can thus not automatically turn into the unlocked position in the advanced position.
  • control cams can be divided in the circumferential direction into flat polygonal sections.
  • the latches which are spring-loaded against the control cams, are each supported on one of the flat polygonal sections with their preferably flat contact surface. A conversion into a different rotational position is possible against the force of the spring means acting on the bolt by turning the mouth part further.
  • the end of the guide stub facing away from the mouth faces one against the other Setting direction tapered section for radial disengagement of the bolt.
  • the taper is formed, for example, by insertion surfaces approaching the round circumferential contour from the rear end to the front. This greatly simplifies the insertion and locking of the mouth part.
  • the mouth part has a breakthrough which enters the mouth bore laterally, with an adjoining receiving channel for the fastening elements.
  • the receiving channel is expediently formed by a hollow profile which serves as a handle which makes handling easier for locking and unlocking the mouth part.
  • the pressure sensor is expediently designed as a pin which is guided radially offset from the driving-in axis and which can be shifted backwards from a front position projecting beyond the mouth, pressing against the surface, into the ignition-ready position. The pressure sensor tensions the tension spring of the ignition mechanism, for example with the interposition of a guide bush for the driving piston.
  • the setting tool shown in FIGS. 1 and 2 in the rest position has a housing designated overall by 1.
  • This essentially consists of a base body 2 with a laterally molded handle 3 and a receptacle body 4 which can be displaced in the base body 2.
  • a section of the base body 2 facing away from the setting direction is arranged an ignition mechanism which is known per se and is not shown completely.
  • a guide bushing designated overall by 5
  • a driving piston designated as a whole by 6 is mounted with a head 7 in the guide bush 5 and projects with a front-side shaft 8 into a mouthpiece designated as a whole by 9.
  • the mouth part 9 projects with a rear guide stub 10 into a receiving bore 11 of the receiving body 4 of the housing 1 and is axially displaceably and releasably locked therein.
  • a pressure sensor 12 slidably penetrates the mouth part 9 parallel to the piston axis.
  • the opening area, which projects beyond the receiving body 4 in the setting direction of the mouth part 9 has a non-circular circumferential contour and laterally protrudes a receiving channel 13 for fasteners 14 detachably connected to one another in the form of nails.
  • An opening 16 is provided in the wall of the mouth part 9 for the entry of the fastening elements 14 into a mouth bore 15.
  • a spring clip 17 immovably mounted in the receiving body 4 projects into recesses 18a, 18b closed on the front and rear on the outer contour of the guide bushing 5.
  • a tapered bearing bore 21 for powder propellant charges known per se, such as cartridges, opens into a guide bore 19 for the head 7 of the driving piston 7.
  • the latter in magazine form in strips, are fed in via a transverse channel 22.
  • a dowel pin 23 is inserted in a fixed position on the rear, which acts with its region protruding counter to the setting direction on a drive pin 24 of the ignition mechanism arranged transversely thereto.
  • the driving pin 24, as can be seen in FIG. 2, is fixed in a firing pin 25 which is displaceably mounted on the housing side, the firing tip 26 of which lies in the axial projection of the bearing bore 21.
  • the ignition mechanism is tensioned by pushing the guide bush 5 back into the ignition ready position which can be seen in FIG. 3.
  • the dowel pin 23 displaces the driving pin 24 and thus also the ignition pin 25 against the force of the tension spring 27 to the rear.
  • the ignition pin 25 is rotated slightly in a known manner by actuating a trigger 28, as a result of which the driving pin 24 is removed from the effective range of the dowel pin 23 arrives and the ignition pin 25 swings forward against the powder drive charge.
  • the locking of the mouth part 9 in the receiving body 4 is accomplished by segment-shaped latches 31a, 31b, which are radially displaceably mounted in windows 32a, 32b of the receiving body 4 and are engaged by axially spring 33 in axially limited recesses 34a, 34b.
  • the mouth part 9 has in the guide socket 10 receiving the recesses 34a, 34b a round circumferential contour corresponding to the receiving bore 11 of the receiving body 4.
  • the rear outlet of the recesses 34a, 34b forms shoulders 34c, 34d which are axially projected from the opposing shoulders 31c, 31d of the latches 31a, 31b.
  • the shoulders 34c, 34d together with the counter shoulders 31c, 31d serve as stop stops limiting the forward movement of the mouth part 9.
  • each recesses 34a, 34b approaches the round circumferential contour as a control curve designated as a whole with 34e, 34f.
  • the control cams 34e, 34f are formed by flat polygonal sections 34g, 34h, 34i and 34j, 34k, 34l, on which the bolts 31a, 31b on the opposite side are supported under spring force with a flat contact surface 31e, 31f . Rotation of the mouth part 9 relative to the housing 1 is possible in each case by overcoming the spring force, as is indicated by the rotary end positions of the receiving channel 13 indicated by the dot-dash line.
  • the bolts 31a, 31b are pushed out of the recesses 34a, 34b by the control cams 34e, 34f and come to rest on the round circumferential contour of the guide socket 10. This makes it possible to pull the mouth part 9 forward.
  • the insertion of the mouth part 9 into the receiving body 4 takes place only by pushing it in, whereby the latches 31a, 31b are radially disengaged on the round circumferential contour via insertion surfaces 35a, 35b diverging from one another in the setting direction, in order then to move into the recesses 34a, 34b.
  • the setting process can only be triggered when the mouth part 9 is locked.
  • the pressure sensor 12 provided for moving the guide bush 5 in the ignition-ready position cannot be sufficiently moved backwards.
  • the mouth part 9 has stop elements 36a, 36b designed as cams, which in the locked position of the mouth part 9, when it is moved backwards, plunge into front-side receiving openings 37a, 37b of the receiving body 4, as is the case in comparison of FIG. 2 with FIG. 3 Expression comes.
  • stop means which are formed by areas 38a, 38b of an essentially annular end face on the mouth part 9 on the one hand and by areas 39a, 39b of an essentially annular end face on the receiving body 4.
  • the stop elements 36a, 36b run onto the areas 39a, 39b of the receiving body 4, as is shown in simplified form in FIG. 6.
  • the contact pressure sensor 12 can only be displaced backwards flush with the mouth part 9 relative to the housing 1 by the amount of its protrusion (FIG. 1); a complete pushing back of the pressure sensor 12 in the ignition-ready position is not possible because of the prevented displaceability of the mouth part 9.
  • Fig. 7 illustrates the structure of the connection of the mouth part 9 with the connecting parts and the formation of these parts in particular.

Claims (9)

  1. Outil de scellement actionné par l'énergie de la poudre, comprenant un carter (1) muni d'une poignée (3) dépassant latéralement, un mécanisme de mise à feu avec ressort d'armement (27) dans le carter (1), un élément de bouche (9) dépassant du carter (1) dans la direction de pose et présentant un contour périphérique non circulaire, qui peut être déplacé par rapport au carter (1), contre des butées de retenue, dans une position antérieure et, contre des moyens d'arrêt, dans une position postérieure, et un capteur de pression (12) déplaçable par rapport à l'élément de bouche (9) dans une position d'attente de mise à feu tendant le ressort d'armement (27), dont la face frontale libre affleure, dans la position d'attente de mise à feu, la face frontale libre de l'élément de bouche (9) placé dans la position postérieure, caractérisé en ce que l'élément de bouche (9) peut tourner par rapport au carter (1) autour de son axe longitudinal, que les moyens d'arrêt sont constitués par des zones (39a, 39b; 38a, 38b) des surfaces frontales du carter (1) et de l'élément de bouche (9) dirigées l'une vers l'autre, que l'un des éléments (1,9) comporte des éléments de butée (36a, 36b) dépassant axialement du plan d'arrêt de la zone (39a, 39b; 38a, 38b) et que l'autre élément (1, 9) présente des ouvertures de réception (37a, 37b) pour les éléments de butée (36a, 36b), et que les butées de retenue sont constituées par des épaulements (34c, 34d) sur l'élément de bouche (9) et par des épaulements conjugués (31c, 31d) sur le carter (1), dans la position postérieure de l'élément de bouche (9), les épaulements (34c, 34d) étant éloignés des épaulements conjugués (31c, 31d) d'au moins la distance sur laquelle les éléments de butée (36a, 36b) font saillie axialement par rapport au plan d'arrêt, et les épaulements (34c, 34d) et les épaulements conjugués (31c, 31d) pouvant être amenés d'une position fonctionnelle dans laquelle ils se recouvrent dans leur projection axiale à une position de retrait pour l'élément de bouche (9) dans laquelle ils ne se recouvrent pas dans leur projection axiale.
  2. Outil de scellement selon la revendication 1, caractérisé en ce que les ouvertures de réception (37a, 37b) sont disposées sur le carter (1) et les éléments de butée (36a, 36b), sur l'élément de bouche (9).
  3. Outil de scellement selon l'une des revendications 1 ou 2, caractérisé en ce que la mesure d'arc du diamètre intérieur des ouvertures de réception (37a, 37b) dépasse de deux à cinq fois la mesure d'arc du contour extérieur des éléments de butée (36a, 36b).
  4. Outil de scellement selon l'une des revendications 1 à 3, caractérisé en ce que les épaulements (34c, 34d) sur l'élément de bouche (9) sont constitués par une face frontale dégagée en direction de la bouche d'une tubulure de guidage (10) qui est raccordée, dans le sens opposé à la direction de pose, aux moyens d'arrêt (38a, 38b).
  5. Outil de scellement selon la revendication 4, caractérisé en ce que les épaulements conjugués (31c, 31d) sur le carter (1) sont constitués par une face frontale dégagée en direction du mécanisme de mise à feu, de verrous (31a, 31b) engagés radialement dans un alésage de réception (11) pour la tubulure de guidage (10) de l'élément de bouche (9).
  6. Outil de scellement selon la revendication 5, caractérisé en ce que les verrous (31a, 31b) sont poussés radialement, par des moyens élastiques (33), contre la tubulure de guidage (10) de l'élément de bouche (9).
  7. Outil de scellement selon l'une des revendications 5 ou 6, caractérisé en ce que sur l'élément de bouche (9), des cames de commande pour les verrous (31a, 31b) s'approchant radialement de la périphérie de la tubulure de guidage, dans le sens circonférentiel de celle-ci, sont prévues du côté bouche sur les épaulements (34c, 34d).
  8. Outil de scellement selon l'une des revendications 5 à 7, caractérisé en ce que l'extrémité de la tubulure de guidage (10) opposée à la bouche présente une section rétrécie dans le sens opposé à la direction de pose pour le dégagement radial des verrous (31a, 31b).
  9. Outil de scellement selon l'une des revendications 1 à 8, caractérisé en ce que l'élément de bouche (9) présente un ajour (16) entrant latéralement dans l'alésage de bouche (15) et auquel se raccorde un canal de réception (13) pour les éléments de fixation (14).
EP87810082A 1986-02-28 1987-02-11 Outil de scellement actionné par la poudre Expired - Lifetime EP0235083B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87810082T ATE75984T1 (de) 1986-02-28 1987-02-11 Pulverkraftbetriebenes bolzensetzgeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863606514 DE3606514A1 (de) 1986-02-28 1986-02-28 Pulverkraftbetriebenes bolzensetzgeraet
DE3606514 1986-02-28

Publications (3)

Publication Number Publication Date
EP0235083A2 EP0235083A2 (fr) 1987-09-02
EP0235083A3 EP0235083A3 (en) 1989-11-15
EP0235083B1 true EP0235083B1 (fr) 1992-05-13

Family

ID=6295151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87810082A Expired - Lifetime EP0235083B1 (fr) 1986-02-28 1987-02-11 Outil de scellement actionné par la poudre

Country Status (15)

Country Link
US (1) US4741467A (fr)
EP (1) EP0235083B1 (fr)
JP (1) JPH0755456B2 (fr)
KR (1) KR940011354B1 (fr)
AT (1) ATE75984T1 (fr)
AU (1) AU586736B2 (fr)
CA (1) CA1279951C (fr)
CZ (1) CZ278066B6 (fr)
DE (2) DE3606514A1 (fr)
DK (1) DK166863B1 (fr)
ES (1) ES2031155T3 (fr)
FI (1) FI88368C (fr)
HU (1) HU196924B (fr)
MX (1) MX168586B (fr)
NO (1) NO163560C (fr)

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DE2227774C3 (de) * 1972-06-07 1980-08-14 Hilti Ag, Schaan (Liechtenstein) Schutzkappensicherung an einem puJverkraftbetriebenen Bolzensetzgerät
DE2362321C2 (de) * 1973-12-14 1985-04-11 Hilti Ag, Schaan Pulverkraftbetriebenes Bolzensetzgerät
DE2432642A1 (de) * 1974-07-08 1976-01-29 Hilti Ag Verfahren und geraet zum setzen eines duebels
DE2433642C2 (de) * 1974-07-12 1985-03-28 Hilti Ag, Schaan Pulverkraftbetriebenes Setzgerät
US4162033A (en) * 1977-07-20 1979-07-24 Omark Industries, Inc. Powder actuated tool
JPS5848311B2 (ja) * 1978-12-12 1983-10-27 ソシエテ ド プロスペクシヨン エ ダンバンシヨン テクニク エス ペ イ テ 固定部材打込み装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10142561B4 (de) 2001-08-30 2021-11-11 Hilti Aktiengesellschaft Setzgerät mit Nagelmagazin

Also Published As

Publication number Publication date
ES2031155T3 (es) 1992-12-01
CZ278066B6 (en) 1993-08-11
DE3606514A1 (de) 1987-09-03
NO163560C (no) 1990-06-20
EP0235083A3 (en) 1989-11-15
AU6929987A (en) 1987-09-03
CS8701150A2 (en) 1991-10-15
CA1279951C (fr) 1991-02-12
DK104887D0 (da) 1987-02-27
US4741467A (en) 1988-05-03
DE3778929D1 (de) 1992-06-17
KR870007763A (ko) 1987-09-21
DK104887A (da) 1988-08-28
MX168586B (es) 1993-06-01
FI870686A0 (fi) 1987-02-19
HU196924B (en) 1989-02-28
KR940011354B1 (ko) 1994-12-07
HUT42987A (en) 1987-09-28
NO870826D0 (no) 1987-02-27
AU586736B2 (en) 1989-07-20
ATE75984T1 (de) 1992-05-15
FI870686A (fi) 1987-08-29
DK166863B1 (da) 1993-07-26
FI88368C (fi) 1993-05-10
EP0235083A2 (fr) 1987-09-02
JPH0755456B2 (ja) 1995-06-14
NO163560B (no) 1990-03-12
JPS62208880A (ja) 1987-09-14
FI88368B (fi) 1993-01-29
NO870826L (no) 1987-10-30

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