EP0085037A1 - Ressort de retenue pour appareils pneumatiques tels que marteaux de burinage - Google Patents

Ressort de retenue pour appareils pneumatiques tels que marteaux de burinage Download PDF

Info

Publication number
EP0085037A1
EP0085037A1 EP83890004A EP83890004A EP0085037A1 EP 0085037 A1 EP0085037 A1 EP 0085037A1 EP 83890004 A EP83890004 A EP 83890004A EP 83890004 A EP83890004 A EP 83890004A EP 0085037 A1 EP0085037 A1 EP 0085037A1
Authority
EP
European Patent Office
Prior art keywords
tool
cylinder
spring
holding
retaining
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
Application number
EP83890004A
Other languages
German (de)
English (en)
Other versions
EP0085037B1 (fr
Inventor
Peter Pacnik
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.)
Vereinigte Edelstahlwerke AG
Original Assignee
Vereinigte Edelstahlwerke 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 Vereinigte Edelstahlwerke AG filed Critical Vereinigte Edelstahlwerke AG
Publication of EP0085037A1 publication Critical patent/EP0085037A1/fr
Application granted granted Critical
Publication of EP0085037B1 publication Critical patent/EP0085037B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Definitions

  • the invention relates to a holding coil spring for the working tool, for example for the drill bit, a compressed gas tool, in particular a small chisel gun operated by compressed air.
  • a compressed gas tool in particular a small chisel gun operated by compressed air.
  • a strong spiral spring for the working tool, for example the chisel itself or the holding cap penetrated by it, which has a part which is essentially designed to match the shape of the tool-side end part of the tool cylinder and a part assigned to the working tool. which, for example, is essentially designed in accordance with the shape of the retaining cap closing the cylinder, to be connected to the tool cylinder.
  • the dumbbell and the shank of the working tool or the top of the holding cap are at least partially encompassing and in this way provide for their retention, at least some take over Windings in the end region of the part of the springs assigned to the cylinder have the function of a screw thread which engages in a corresponding mating thread arranged on the dumbbell of the cylinder in the region of its end part facing the working tool or the holding cap.
  • a helical spring for holding the working tool of pneumatic hammers which has at its tool cylinder end an anti-loosening by a cam on the tool cylinder shaped area of one of its turns.
  • the arrangement of the cam on the working cylinder is, however, a relatively complex measure, which, however, does not require a thread on the cylinder.
  • a disadvantage of the customary formation of the connection between the working tool or holding cap and the cylinder by means of a thread is that during the manufacture of the chisel This thread has to be worked into the working cylinder, which requires at least one additional working step.
  • the disadvantage indicated above only becomes apparent in practical use.
  • the spiral retaining screw spring can be unscrewed and thus loosened from the thread mentioned on the cylinder.
  • DD-PS 143 575 also describes a retaining spring with the screwed-on part of the cylinder of a striking tool, this spring, which directly surrounds the shaft and collar of the working tool, has in the part in which the shaft of the working tool is guided , not a circular cross-section, but has windings with areas that have an approximately circular chord-like course, thereby preventing the working tool from twisting about its longitudinal axis.
  • the spring itself or its part assigned to the work tool forms a stop for the collar on the shaft of the work tool.
  • the invention is based on the task of using the flattening (s) or recess (s) em jacket of the cylinder to create a retaining coil spring, which is easy to handle during assembly and by absolute rotation and thus loosening security characterized by the connection of the working tool or through this penetrated holding cap and the tool cylinder during operation, the arrangement of a thread as mentioned above on the jacket of the cylinder is no longer necessary for an engagement of the retaining spring.
  • the invention relates to a holding coil spring for the working tool, for example for the drill bit, a compressed gas tool, in particular a compressed air-operated small chisel hammer, which has a part assigned to the tool cylinder and an adjoining part assigned to the working tool, and by means of which, if necessary, one of the Work tool or its shaft penetrated holding cap is held, at least a region of at least one of the windings of the holding spring substantially chord-like.
  • Course which is characterized in that at least one, preferably the last turn of the part of the holding spring associated with the tool cylinder has the area or areas with a substantially chord-like course, which or which with at least one correspondingly shaped recess in the jacket of the Tool cylinder can be brought into engagement.
  • the last spiral turns or the last turn of the retaining coil spring can advantageously have a number corresponding to the number of these flattened recesses of tendon-like areas.
  • An embodiment of the retaining helical spring is preferred, in which a flattened region having two sections, or two such regions, is or are provided only in the last turn of the part associated with the tool cylinder.
  • the area or one of these areas is preferably located at the cylinder-side end of the retaining coil spring itself.
  • a particularly simple and effective securing is achieved if two essentially circular chord-like areas are provided opposite each other.
  • a design of the retaining spring is favorable, in which the end of the last spiral turn of the spring part as the circular chord-shaped area and as lying in the corresponding plane, known per se U-shaped Hook is formed.
  • the holding coil spring 1 shown in FIG. 1 essentially comprises the holding cap of the chisel hammer which is used to enclose the holding cap of the chisel hammer and which is penetrated by the working tool or its shaft, and has a cylindrical part 2 which is associated with the working tool and the adjoining, assigned to the tool cylinder, essentially also cylindrical spring part 3 of larger cross section.
  • the last turn of the part 3 ends in an essentially U-shaped hook end part 4, 5 which lies overall in a plane corresponding to a chord of the turn and essentially parallel to the main axis of the spring.
  • the working tool for example the chisel
  • the holding helical spring is placed over the collar of the working tool or slipped over the cap and the cylinder end part, the two tendon-shaped flattened areas of the last turn of the spring jumping into the two corresponding cylinder segment-shaped, flattened recesses in the jacket of the tool cylinder and for a torsion-proof and firm fit of the spring and thus ensure a secure connection of the retaining cap and thus the work tool to the cylinder.
  • FIG. 4 shows the shank 12 of the chisel forming the work tool, which is displaceably mounted in the chuck sleeve 11 arranged in the tool cylinder 10 of a Kluinmeelelhammer 20 and which connects the opening 14 in the tool cylinder 10 by means of the holding coil spring 1 and on the tool side thereof Penetrating end face seated cap 15, and how the top of this cap forms a stop for the collar 13 of the white shaft 12, which is particularly stressed when the chisel hammer is idling.
  • the holding coil spring 1 comprises with its part 2 the holding cap 15 and with its part 3 the area 10a of the tool cylinder 10 facing the cap 15.
  • this spring part 3 there is one of the cylindrical segment-shaped recess 16 in the jacket of the tool cylinder 10 correspondingly shaped, doreich 4 having a tendon-like course is provided, which engages in the flattened area 16 on the jacket of the cylinder 10.
  • the jacket of the cylinder 10 in addition to the recess 16, there can be further similar, essentially opposite, openings. 17 may be provided.
  • the tendon-like area 4 in the last turn of the holding coil spring 1 causes a kind of "narrowing" of the cross section of the holding screw 1, which corresponds to an appropriate "narrowing" through the recess 16 in the cylinder jacket and thus prevents the holding coil spring from being pulled away in the direction of the cylinder axis. Furthermore, there is the certainty that twisting and loosening of the retaining helical spring will not take place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP19830890004 1982-01-21 1983-01-19 Ressort de retenue pour appareils pneumatiques tels que marteaux de burinage Expired EP0085037B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT19882A AT372034B (de) 1982-01-21 1982-01-21 Halteschraubenfeder fuer druckgaswerkzeuge, insbesondere kleinmeisselhaemmer
AT198/82 1982-01-21

Publications (2)

Publication Number Publication Date
EP0085037A1 true EP0085037A1 (fr) 1983-08-03
EP0085037B1 EP0085037B1 (fr) 1986-04-30

Family

ID=3484080

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830890004 Expired EP0085037B1 (fr) 1982-01-21 1983-01-19 Ressort de retenue pour appareils pneumatiques tels que marteaux de burinage

Country Status (3)

Country Link
EP (1) EP0085037B1 (fr)
AT (1) AT372034B (fr)
DE (1) DE3363216D1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE209725C (fr) *
DE186080C (fr) *
DE462712C (de) * 1927-03-30 1928-07-16 Gustav Duesterloh Stillsetzvorrichtung fuer Pressluftschlagwerkzeuge, namentlich fuer Abbauhaemmer
DE501598C (de) * 1928-03-01 1930-07-05 Chicago Pneumatic Tool Co Schlagwerkzeug mit einer auf dem Vorderende des Zylinders aufschraubbaren Haltefeder fuer den Arbeitsstahl
US2890455A (en) * 1957-04-11 1959-06-16 Skil Corp Nail driver
DE2334817A1 (de) * 1972-10-03 1974-04-11 Inst Gornowo Dela Sib Otdel Ak Handbetaetigte druckluft-schlagmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE209725C (fr) *
DE186080C (fr) *
DE462712C (de) * 1927-03-30 1928-07-16 Gustav Duesterloh Stillsetzvorrichtung fuer Pressluftschlagwerkzeuge, namentlich fuer Abbauhaemmer
DE501598C (de) * 1928-03-01 1930-07-05 Chicago Pneumatic Tool Co Schlagwerkzeug mit einer auf dem Vorderende des Zylinders aufschraubbaren Haltefeder fuer den Arbeitsstahl
US2890455A (en) * 1957-04-11 1959-06-16 Skil Corp Nail driver
DE2334817A1 (de) * 1972-10-03 1974-04-11 Inst Gornowo Dela Sib Otdel Ak Handbetaetigte druckluft-schlagmaschine

Also Published As

Publication number Publication date
AT372034B (de) 1983-08-25
ATA19882A (de) 1983-01-15
DE3363216D1 (en) 1986-06-05
EP0085037B1 (fr) 1986-04-30

Similar Documents

Publication Publication Date Title
DE102006048828B4 (de) Haltebuchse für eine Befestigungsvorrichtung
DE3007630A1 (de) Drehschlag-kupplung fuer einen drehschlagschrauber.
DE20214489U1 (de) Gerät zum Eintreiben von Befestigern, insbesondere Schrauben o.dgl.
DE2748093A1 (de) Von hand betaetigbares werkzeug zur installation blinder ankermuttern
EP0109666B1 (fr) Outil à main avec butée réglable de profondeur
DE202013001374U1 (de) Rückschlagratsche mit einem Drehmomentstutzen
DE3008297A1 (de) Zahnaerztliches oder zahntechnisches vibrations-winkelstueck
DE69918774T2 (de) Zubehör zum Eintreiben von Befestigungsmitteln für Werkzeuge mit Drehantrieb
DE4132504A1 (de) Befestigungselement mit einem eine aussparung aufweisenden, nichtkreisfoermigen kopf und antriebswerkzeug fuer ein befestigungselement
DE1503057A1 (de) Durch eine Kraftquelle angetriebenes,von Hand bedienbares Werkzeug zur Erzeugung von rotierenden Schlaegen
DE2925526A1 (de) Befestigungselement und zugehoeriges werkzeug
DE19748987B4 (de) Bohrwerkzeug insbesondere für drehschlagendes Bohren von vorzugsweise Gestein
DE1813556A1 (de) Bolzensetzgeraet
LU80698A1 (de) Mechanische verbindungselemente und dazugehoeriges befestigungswerkzeug
EP3272207A1 (fr) Appareil de travail comprenant des boîtiers partiels reliés par une articulation pivotante
EP0085037B1 (fr) Ressort de retenue pour appareils pneumatiques tels que marteaux de burinage
DE4022763A1 (de) Schraubwerkzeug
DE810739C (de) Handwerkzeug, bei dem Laengskraefte in Drehmomente umgewandelt werden, zur Verwendung als Schraubenzieher, Schraubenschluessel o. dgl.
DE2847529C2 (de) Montagevorrichtung für Stifte
AT401249B (de) Druckluftbetriebenes schlagwerkzeug
DD208106A5 (de) Schlagendes, handgehaltenes druckluftwerkzeug
DE69914800T2 (de) Mechanisches werkzeug zum entfernen von muttern und bolzen
DE2855284A1 (de) Einrichtung zur befestigung von arbeitswerkzeugen mit schlagwirkung
DE2948665A1 (de) Schlagbohrer mit zentralem absaugkanal fuer das bohrklein
AT523169B1 (de) Werkzeug

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB IT LI SE

17P Request for examination filed

Effective date: 19840109

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE FR GB IT LI SE

REF Corresponds to:

Ref document number: 3363216

Country of ref document: DE

Date of ref document: 19860605

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19891218

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19891221

Year of fee payment: 8

Ref country code: CH

Payment date: 19891221

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19891228

Year of fee payment: 8

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900131

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19910120

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19910131

Ref country code: CH

Effective date: 19910131

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910930

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19911001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 83890004.1

Effective date: 19910910