EP0054580A1 - Clé anglaise avec pièce de serrage pour retenir un écrou ou analogue - Google Patents

Clé anglaise avec pièce de serrage pour retenir un écrou ou analogue Download PDF

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Publication number
EP0054580A1
EP0054580A1 EP80108112A EP80108112A EP0054580A1 EP 0054580 A1 EP0054580 A1 EP 0054580A1 EP 80108112 A EP80108112 A EP 80108112A EP 80108112 A EP80108112 A EP 80108112A EP 0054580 A1 EP0054580 A1 EP 0054580A1
Authority
EP
European Patent Office
Prior art keywords
radial bore
shaped
head
wrench
mushroom
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.)
Withdrawn
Application number
EP80108112A
Other languages
German (de)
English (en)
Inventor
Bernd Lestreus
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.)
Hans Mesenholler KG
Original Assignee
Hans Mesenholler KG
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 Hans Mesenholler KG filed Critical Hans Mesenholler KG
Priority to EP80108112A priority Critical patent/EP0054580A1/fr
Publication of EP0054580A1 publication Critical patent/EP0054580A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
    • B25B23/108—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit the driving bit being a Philips type bit, an Allen type bit or a socket

Definitions

  • the invention relates to a socket wrench with a handle and a fixed or exchangeable socket or plug cap, in the ring wall provided with a radial bore a mushroom-shaped, protruding into the receiving space for a nut or a polygonal head screw resiliently mounted.
  • a wrench is also known from DE-GM 74 31 974, in which the plug head has a clamping ring made of elastic material, which is inserted into a circumferential inner groove, but which can only deliver a clamping force when the material is compressed. Therefore, a relatively soft elastic rubber material must be used there, but this is not very wear-resistant. If the relatively soft clamping ring is worn out by abrasion or shearing, it can only be replaced with great effort.
  • CH-PS 109 346 also discloses a nut wrench with a nut magazine, in which the nuts are retained within the magazine by metallic locking elements or bolts which enclose the key head and consequently inevitably enlarge the external dimensions.
  • this known embodiment is technically very difficult and expensive.
  • a screwing aid for wood screws is known from US-PS 27 23 694, which consists of a rubber sleeve pushed onto a screwdriver blade, which clampingly encloses the head of the wood screw.
  • the rubber sleeve on the screwdriver blade must first be pushed back, and only after the screw has been unscrewed a certain distance must the rubber sleeve be pushed onto the screw head with an additional actuation in order to hold the screw in place.
  • Such a procedure is not applicable to wrenches with a socket or plug cap.
  • the invention has for its object to provide a wrench with a device for temporarily holding the nut or the like. That is very inexpensive to manufacture and easy to install and replace, does not increase the external dimensions of the socket wrench and is characterized by high wear resistance.
  • the head of the clamping part made of elastomeric material is provided with a dome-shaped roof, which is supported with its pulled-down roof edge on a recessed shoulder surface of the recess surrounding the inner end of the radial bore, and can be pressed elastically into the recess.
  • the invention offers the advantage that only a one-piece, very inexpensive clamping element is required, which does not enlarge the outer dimensions of the socket wrench and can be assembled and exchanged in the simplest way. Due to the special arrangement and the roof shape of the mushroom-shaped clamping part, high wear resistance is also ensured, since the clamping force in the present case is not obtained by compression of elastic material but by bending, especially by pressing in the curved roof. This has the consequence that a ver relatively tough and thus highly wear-resistant plastic can be used. It is also advantageous that because of the partially recessed arrangement of the mushroom head in an inner recess of the socket wrench, the nut to be loosened or the like always occurs only on the sloping roof surface of the mushroom head, so that a shearing effect is reliably eliminated.
  • the mushroom head may be expedient here to provide the mushroom head with a trough-shaped or funnel-shaped coaxial material recess at its apex. This also increases the flexibility of the mushroom head.
  • the invention provides that the clamping part is designed as an undercut snap member at its foot end.
  • the radial bore is expediently surrounded on the outside by an extension bore, into which the foot of the clamping part, which is provided with a snap bead or discrete snap lugs, is received.
  • the axial distance between the edge of the mushroom head and the snap bead or the snap noses is approximately equal to the length of the central part of the radial bore stepped on both sides.
  • the mushroom-shaped clamping part is inserted into the radial bore of the ring wall from the inside until the foot-side snap projections into the Snap in the outer extension hole of the radial hole. Since the snap projections are sunk essentially within this extension bore, the outer dimensions of the screw socket wrench are not enlarged by the clamping part. Should the mushroom-shaped clamping part wear out over time, it can be easily replaced with a new one.
  • the ring wall is provided with an axial, dovetail-shaped inner groove which extends over the radial bore and in the dovetail angles of which the mushroom head is bordered on two diametrically opposite edge regions.
  • the mushroom head edge is simultaneously used as a snap projection to secure the position of the clamping part on the socket wrench.
  • the invention is described voltage exemplary embodiments illustrated in greater detail below with reference to two calibration in the Z.
  • Fig. 1 shows a socket wrench from handle 1, continuation 2 and socket head 3 plugged thereon, which is taken, for example, from a socket set. Alternatively, it can also be a socket wrench consisting of a handle, continuation and plug head.
  • the socket wrench head 3 which is designed here as an internal hexagon, is provided on a hexagonal segment surface approximately halfway up its free receiving space 4 for a nut 5 with a radial bore 6 in the annular wall 7.
  • the radial bore 6 is adjoined by an enlarging bore 8 which is somewhat larger in diameter, while on the inside a recess 9 which is considerably larger in diameter encloses the radial bore 6.
  • the recess 9 is also shown here as a radial bore, but for manufacturing reasons it may be more advantageous to provide an axial inner groove 10 on the annular wall 7, which extends over the radial bore.
  • a mushroom-shaped clamping part 11 is inserted from the inside into the radial bore 6, the foot end 12 of which is provided with a snap bead 13 which snaps into the extension bore 8.
  • the shaft 14 of the clamping part 11 is approximately half the length within the radial bore 6 and with its other longitudinal half in the recess 9.
  • the mushroom head 15 of the clamping part 11 is designed as a dome-shaped roof, which with its edge 16 on the shoulder surface 17 of the recess 9 or sits on the bottom surface of the groove 10. The central area of the mushroom head protrudes into the receiving space 4 for the mother. At its apex, the mushroom head is provided with a trough-shaped, coaxial recess 18.
  • the clamping part can first be provided with a pointed cone 19 which extends its foot and is cut off after snapping in by means of a knife 20 or the like.
  • the domed mushroom roof is pressed flat by a nut 5, whereby the outer snap bead 13 lifts slightly from its seat.
  • the screw 5 can be easily separated from the socket wrench after overcoming the friction work after the screwing work has been completed.
  • the annular wall 21 is provided with an axial, dovetail-shaped inner groove 22 which extends over the radial bore 23 and in the dovetail angles of which the mushroom head 24 is bordered on two diametrically opposed edge regions 25 and 26.
  • the shaft 27 of the mushroom-shaped clamping part is smooth and slidably mounted in the radial bore 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP80108112A 1980-12-22 1980-12-22 Clé anglaise avec pièce de serrage pour retenir un écrou ou analogue Withdrawn EP0054580A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP80108112A EP0054580A1 (fr) 1980-12-22 1980-12-22 Clé anglaise avec pièce de serrage pour retenir un écrou ou analogue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP80108112A EP0054580A1 (fr) 1980-12-22 1980-12-22 Clé anglaise avec pièce de serrage pour retenir un écrou ou analogue

Publications (1)

Publication Number Publication Date
EP0054580A1 true EP0054580A1 (fr) 1982-06-30

Family

ID=8186945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80108112A Withdrawn EP0054580A1 (fr) 1980-12-22 1980-12-22 Clé anglaise avec pièce de serrage pour retenir un écrou ou analogue

Country Status (1)

Country Link
EP (1) EP0054580A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1180417A3 (fr) * 2000-08-17 2002-04-03 Felo-Werkzeugfabrik Holland-Letz Gmbh Dispositif de maintien
EP1256418A3 (fr) * 2001-03-26 2004-10-20 Forschungszentrum Jülich Gmbh Douille avec des moyens pour retenir des objets avec une surface exterieure polygonale

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR751680A (fr) * 1932-03-14 1933-09-07 Bosch Robert Tournevis à moteur
US3245446A (en) * 1962-09-23 1966-04-12 Morifuji Haguruma Seisakusho K Screw driver with a screw holding device
US4096896A (en) * 1977-04-29 1978-06-27 Upson Tools, Inc. Composite tool structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR751680A (fr) * 1932-03-14 1933-09-07 Bosch Robert Tournevis à moteur
US3245446A (en) * 1962-09-23 1966-04-12 Morifuji Haguruma Seisakusho K Screw driver with a screw holding device
US4096896A (en) * 1977-04-29 1978-06-27 Upson Tools, Inc. Composite tool structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1180417A3 (fr) * 2000-08-17 2002-04-03 Felo-Werkzeugfabrik Holland-Letz Gmbh Dispositif de maintien
EP1256418A3 (fr) * 2001-03-26 2004-10-20 Forschungszentrum Jülich Gmbh Douille avec des moyens pour retenir des objets avec une surface exterieure polygonale

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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): AT BE CH FR GB IT NL SE

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830605

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LESTREUS, BERND