EP0969948A1 - Element de vissage - Google Patents

Element de vissage

Info

Publication number
EP0969948A1
EP0969948A1 EP98913550A EP98913550A EP0969948A1 EP 0969948 A1 EP0969948 A1 EP 0969948A1 EP 98913550 A EP98913550 A EP 98913550A EP 98913550 A EP98913550 A EP 98913550A EP 0969948 A1 EP0969948 A1 EP 0969948A1
Authority
EP
European Patent Office
Prior art keywords
jaws
element according
holder
screwdriver element
fastener
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
EP98913550A
Other languages
German (de)
English (en)
Other versions
EP0969948B1 (fr
Inventor
Helmut Österle
Norbert Köppel
Felix Scheiwiller
Peter Kouwenhoven
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.)
SFS Group International AG
Original Assignee
SFS Industrie Holding 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7824740&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0969948(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SFS Industrie Holding AG filed Critical SFS Industrie Holding AG
Publication of EP0969948A1 publication Critical patent/EP0969948A1/fr
Application granted granted Critical
Publication of EP0969948B1 publication Critical patent/EP0969948B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B25B13/00—Spanners; Wrenches
    • B25B13/44—Spanners; Wrenches of the chuck type

Definitions

  • the invention relates to a screwdriver element for holding and for rotating a fastener with a plurality of consecutive jaws in the circumferential direction for gripping the fastener, the jaws engaging in a sleeve-like holder and interacting with this holder in a first end position for holding the fastener in a radial direction.
  • device can be pressed apart and in a second end position with axial and / or radial force by positive action of the bracket in the radial direction can be forced against each other.
  • Such screwdriver elements have become known in various versions.
  • such screwdriver elements have a recess for receiving the fastener head, the recess being adapted to the cross section of the fastener head, as seen in the axial direction, so that the torque can be transmitted when the fastener is screwed in.
  • a fastener is therefore guided with its head in the recess in such a screwdriver element in the axial direction.
  • An additional arrangement of resilient pins or balls can, for example, prevent the head of a fastener from automatically detaching after being inserted into the screwdriver element. At least temporarily, loss protection is therefore guaranteed.
  • the present invention therefore has for its object to provide a screwdriver element of the type mentioned, with which a fastener head or sections of a fastener head can be held securely in the axial direction when a fastener is set, until the fastener is finally tightened .
  • this is achieved by making incisions or recesses in the free end region of the jaws for the positive and / or non-positive reception of a fastener head. are formed, and that at the free end of the jaws on the incisions or recesses are then formed towards the central axis or away from the cantilever-like parts for additional positive and / or non-positive detection of sections of the fastener head.
  • the fasteners to be used can be clamped in the area of the fastener head in such a way that they can no longer be moved in the axial direction, that they remain aligned with the screwdriver element during the entire setting process and thus an optimal drive of a screwing tool is made possible.
  • the radial compression of corresponding jaws not only the fastener head can be grasped exactly, but also a corresponding engagement of the fastener head is possible without additional stop elements and spring-return bolts or balls being required.
  • the incisions or recesses on the jaws correspond at least approximately to the cross section of the edge region of the fastener head to be gripped or a collar formed thereon.
  • the screwdriver element or the jaws of the same can be adapted to a specially designed fastener, so that a very special screwdriver element is available for a specific application, with which the fasteners can also be set optimally.
  • openings on the jaws in the area of the incisions or recesses or in the axial direction be connected to these or to the gripper-like parts or profiles for attacking the fastener head or on sections thereof are provided.
  • the jaws also provide an optimal transmission of the torque, namely by providing a tool in the relevant areas of the jaws.
  • the jaws are spring-loaded in the direction of their open position.
  • the jaws are now in the open position always in the pivoted position so that there are no problems with the insertion of the next fastener.
  • the thickness of the gripper-like parts in the axial direction of the screwdriver element is smaller than the axial length of a section on a fastener head which connects on the shaft side to a collar formed all round on the fastener head.
  • the bottom end of the jaws and thus of the gripper-like parts is therefore still at an appropriate distance from the surface of the workpiece, so that the fastener head can be held in place until it is immediately and finally set without the workpiece surface being scratched.
  • a simple design variant provides that on the inside of the holder and / or on the outside surface of the jaws there are run-up surfaces running at an acute angle to the central axis, the jaws being able to be pressed against one another by axial pressing into the holder as a result of the run-up surfaces.
  • the jaws can be forced to close by simple means, and only by axially pressing in the fastener, the fastener head acting accordingly on the jaws. If there is additional axial pressure from the screwing tool during the setting process, the acute-angled running surfaces cause an additional radial force component, so that the fastener head is clamped even more powerfully during the fastener setting process.
  • the jaws at their ends projecting into the sleeve-like holder have radially inwardly directed cams which engage in a radially circumferential groove of an axially displaceable bolt in the screwdriver element and which can be fixed in various snap-in positions, this bolt passing through axial pressure and / or tensile action on the jaws is adjustable together with these.
  • the jaws are not only secured in the axial direction and thus held captive, but can also work together with the bolt in a specific te opening and closing positions are brought. Since the jaws remain in their one end position in the closed position, the fastener head cannot fall out again after being inserted between the jaws even when it is mounted downwards.
  • the bolt is fixed in a snap-in manner, at least in the two end positions of the jaws.
  • the bolt has at least two snap-in points formed by circumferential grooves, a spring-loaded pin or a ball being held on the sleeve-like holder and engaging in the corresponding circumferential groove. This creates safe locking points that prevent the jaws from being inadvertently adjusted in the open position and in the closed position.
  • the bolt on its section adjoining the groove for engagement of the cams formed on the jaws, the inner cross-section of the jaws in the closed state - Is fit, the transition between the groove and the end part of the bolt and the corresponding regions of the jaws are designed spherical section. This ensures not only an exact guidance between the bolt and the jaws, but also an exact pivoting possibility without jamming and thus malfunctions in the screwdriver element.
  • a screwdriver element gives rise to further technical possibilities. So it is possible with a special embodiment that a tool for an internal attack is formed in the center between the jaws. In such a case, the jaws are practically only required for holding and for axially aligning the fastener, whereas the drive for screwing in can take place via an internal attack. With such a construction, it is particularly advantageous if the tool is designed or arranged for an internal attack at the free end of the bolt which can be displaced in the sleeve-shaped holder. This bolt moves together with the jaws and always assumes the same axial position with respect to the jaws, so that it is very easy to equip the free end of this bolt with the corresponding internal attack.
  • the jaws are resiliently pressed against one another by an O-ring inserted into a groove on the outer circumference of the jaws in the region of the inwardly protruding cams, so that the jaws are moved apart into the open position in their position led out of the holder are pressed.
  • Another embodiment provides that compression springs are inserted between the jaws in the region of their free ends, so that the jaws are pressed apart into the open position in their position brought out of the holder.
  • the gripper-like parts are each guided over the entire sector area of the jaws. This ensures that the holder is as comprehensive as possible on the circumference of the fastener head.
  • An optimal and very simple construction is also given when two jaws are provided, which are guided approximately over an angular range of 180 °.
  • Figure 2 shows the same screwdriver element, also shown in a longitudinal section, with the jaws in their open position.
  • FIG. 3 shows a view of a fastener which can be placed with a screwdriver element according to the invention
  • 4 and 6 to 9 each show longitudinal sections through a screwdriver element according to FIGS. 1 and 2 with an inserted fastener, different positions of the jaws being shown within the screwdriver element;
  • Fig. 1 1 a screwdriver element according to another embodiment, only the spring means for holding in the open position are changed compared to the embodiment of FIGS. 1 and 2.
  • the fastener 1 and 2 essentially consists of a sleeve-like holder 2 and two jaws 3 and 4 and serves to receive a fastener head 5 and to hold the same or to drive the same and thus to screw in a fastener 6.
  • the fastener 6 is provided with a corresponding shaft 7 and a thread 8 and can optionally also be equipped with a drilling part 9.
  • the fastener head 5 has a collar 10 which is spaced by the length B from the support surface 11 of the head.
  • a section 1 2 is provided below the collar 10, which is smaller in size than the collar 10 and is practically completely covered by this.
  • the section 12 is provided with a tool attack 13, here for example with a hexagon.
  • the screwdriver element 1 is now intended to provide a possibility of keeping a fastener 6 firmly and axially aligned during a drilling and / or thread forming process and / or during a screwing-in process and of transmitting the corresponding torque from the screwdriver element to the fastener 6.
  • two jaws 3 and 4 are present, and within the scope of the invention a plurality of jaws which follow one another in the circumferential direction can also be provided for gripping the fastener head 5.
  • the jaws 3, 4 engage in the sleeve-like holder 2 and can be closed or pushed apart in cooperation with the same.
  • the jaws 3, 4 can be pressed apart in the radial direction in their one end position (FIG. 2) for inserting a fastener head 5.
  • the form-fitting action between the holder 2 and the jaws 3, 4 means that the jaws 3, 4 are forced in the radial direction. are pressed against each other (position according to FIG. 1).
  • cuts 15, 16 are provided, with which the positive and / or non-positive reception of a fastener head 5 or sections of a fastener head can be effected.
  • the incisions 1 5, 16 on the jaws 3, 4 correspond at least approximately to the cross section of the edge region of the fastener head 5 to be gripped or of the collar 10 formed thereon.
  • the fastener head 5 is firmly clamped between the two jaws 3 and 4 in the position of the screwdriver element 1, as is also shown in FIG. 1, the gripper-like parts 17 , 18 reach behind or reach under the collar 10 and are supported with these gripper-like parts on the tool attack 13 of the fastener head 5.
  • the fastener 6 can be held clamped by the screwdriver element until it is finally screwed into the workpiece, since the gripper-like parts 17, 18 engaging under part of the fastener head 5 cannot come to rest on the workpiece surface.
  • the jaws 3, 4 are pulled out of the holder 2 and finally come into a position as shown in FIGS 9 and 10 is shown. In this position, the two jaws 3 and 4 are pressed apart so far into their open position that the fastener head 5 is released. Now the screwdriver element can be lifted upwards in the direction of arrow 21 and is thus prepared for receiving the next fastener 6, which only has to be pressed into the screwdriver element with the fastener head 5 first. The axial load on the jaws 3, 4 pushes them into the holder 2, so that the jaws 3, 4 finally reach the closed position in which the fastener head 5 is held.
  • the jaws 3, 4 can thus be pivoted into their closed or open position by an axial movement in the sleeve-like holder 2 in a positive and / or non-positive manner.
  • the simplest version is when a form-fitting holder is achieved in the closed position and, in addition to the positive connection, a force fit is also provided in the open position by means of a corresponding spring.
  • the jaws 3, 4 are therefore expediently spring-loaded in the direction of their open position, the jaws 3, 4 in the examples according to FIGS. 1 and 2 by an O-ring 22 inserted into a groove on the outer circumference of the jaws 3, 4 are pressed resiliently against each other, in the region of their ends projecting into the holder 2. This causes the jaws to be pressed apart with their ends protruding from the holder into the open position.
  • compression springs 23 are inserted between the jaws in the region of their free ends, so that the jaws in the holder 2 lead out into the open position apart.
  • run-up surfaces 25, 26 are provided at an acute angle to the central axis 24 of the screwdriver element, so that the jaws 3, 4 are pressed against one another in the direction of arrow 14 when they are axially pressed in.
  • Appropriate ramp surfaces 25, 26 are expediently provided both on the holder 2 and on the jaws 3, 4. It would also be conceivable, however, to carry out corresponding acute-angled contact surfaces only on the holder 2 or on the jaws 3, 4. For proper and trouble-free function, however, it is sensible to design corresponding contact surfaces on both facing areas.
  • the jaws 3, 4 have at their ends projecting into the sleeve-like holder 2 radially inwardly directed cams 27, 28 which engage in a radially circumferential groove 29 of a bolt 30 which is axially displaceable in the screwdriver element 1.
  • the bolt 30 is adapted to the inner cross section of the jaws 3, 4 in the closed state at its section 31 adjoining the groove 29 for engaging the cams 27, 28.
  • the section 31 forming the transition between the groove 29 and the end part 32 of the bolt 30 is advantageously spherical. designed in a sectional shape, the inner regions of the jaws 3, 4 also being designed correspondingly.
  • the bolt 30 is adjusted together with the jaws in the direction of the axis 24 by a corresponding axial pressure and / or tensile action on the jaws 3, 4.
  • the bolt 30 has, at its end protruding into the holder 2, circumferential grooves 33 and 34, in which a pin 36 or a corresponding ball, for example spring-loaded by an O-ring 35, can engage.
  • the spring-loaded pin 36 thus engages at least in the region of the two end positions of the bolt 30 in one of the grooves 33 and 34, so that in addition a non-positive mounting of the bolt 30 and thus the jaws is ensured in the two end positions.
  • a spring-loaded pin 36 of course, correspondingly spring-loaded balls or the like could also be provided, which engage in the corresponding circumferential groove 33 or 34.
  • the bolt 30 has a circumferential collar 37 which is larger in diameter than the section of the bolt 30 which has the two grooves 33 and 34.
  • a ball 38 which partially extends into the region of the bore 39 in the holder 2 protrudes and thus prevents the bolt 30 from being pulled out completely, and is held secured against axial displacement.
  • the circumferential collar 37 is prevented from further adjustment by the ball 38 projecting into the bore 39.
  • the gripper-like parts 17, 1 8 are expediently guided over the entire sector area of the jaws 3, 4. However, it is entirely conceivable to provide only individual projecting parts or webs which form the gripper-like parts 17, 1 8. Instead of the claw-like parts 17, 18 projecting in the direction of the central axis, it would also be possible to provide openings or profiles leading away from the central axis if appropriately designed fasteners 6 or appropriately designed fastener heads 5 are to be detected. In this case, corresponding protruding elevations, pins or the like would then be present on the fastener heads 5. It would also be conceivable that the elevations, pins or the like protrude beyond the circumference of a collar 10 on the fastener head 5.
  • the gripper-like parts or pins corresponding to the central axis or openings or profiles leading away from this central axis are provided directly in the area of the incisions 15, 16, so that fasteners 6 are then also held on the fastener head 5 can be, which only have a kind of collar 10, on which projections or depressions or pins and holes are provided directly.
  • the jaws would then correspond to the shape of the collar 10 of the fastener head 5, the positive and / or frictional connection being created by the intermeshing elevations or projections. In this case, too, a fixation of a fastener head 5 in the screwdriver element is possible, as seen in the axial direction.
  • a corresponding section 12 must be present in some form to the distance B determined by the length B between the support of the fastener head 5 and the Start to manufacture the federal government 10.
  • a corresponding washer which is smaller in diameter than collar 10
  • a corresponding internal attack would then be formed in the fastener head 5, the corresponding tool also being able to be formed or arranged, for example, at the free end of the bolt 30 displaceable in the sleeve-shaped holder 2.
  • the opening position would then be brought about solely by the application of radial force or by releasing the radial mobility of the jaws 3, 4, or the jaws 3, 4 could be brought into the closed position by correspondingly rotating sleeve parts, for example.

Abstract

L'invention concerne un élément de vissage (1) destiné à recevoir la tête (5) d'un système de fixation (6), pour lequel il est prévu des mâchoires (3, 4) destinées à saisir la tête du système de fixation. Les mâchoires (3, 4) peuvent être introduites dans le sens axial dans la fixation (2) ou en être extraites. En position de sortie, les mâchoires peuvent être éloignées l'une de l'autre par pivotement, pour se trouver dans une position ouverte. Au niveau de leurs extrémités libres, les mâchoires comportent des encoches (15, 16) dans lesquelles font saillie de manière adjacente des pièces (17, 18) de type griffes, dirigées vers l'axe médian, afin d'enserrer la tête (5) du système de fixation depuis l'arrière, par liaison de forme et/ou de force.
EP98913550A 1997-03-26 1998-02-16 Element de vissage Expired - Lifetime EP0969948B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19712783 1997-03-26
DE19712783A DE19712783C2 (de) 1997-03-26 1997-03-26 Schrauberelement
PCT/EP1998/000871 WO1998042480A1 (fr) 1997-03-26 1998-02-16 Element de vissage

Publications (2)

Publication Number Publication Date
EP0969948A1 true EP0969948A1 (fr) 2000-01-12
EP0969948B1 EP0969948B1 (fr) 2003-08-06

Family

ID=7824740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98913550A Expired - Lifetime EP0969948B1 (fr) 1997-03-26 1998-02-16 Element de vissage

Country Status (21)

Country Link
US (2) US6240811B1 (fr)
EP (1) EP0969948B1 (fr)
JP (1) JP3329832B2 (fr)
KR (1) KR100332253B1 (fr)
CN (1) CN1111469C (fr)
AT (1) ATE246573T1 (fr)
AU (1) AU745719B2 (fr)
BR (1) BR9808420A (fr)
CA (1) CA2283801A1 (fr)
CZ (1) CZ289946B6 (fr)
DE (2) DE19712783C2 (fr)
EA (1) EA001019B1 (fr)
HU (1) HUP0001082A3 (fr)
ID (1) ID22453A (fr)
IL (1) IL131989A0 (fr)
NO (1) NO310857B1 (fr)
NZ (1) NZ500450A (fr)
PL (1) PL335442A1 (fr)
SK (1) SK111699A3 (fr)
TR (1) TR199902358T2 (fr)
WO (1) WO1998042480A1 (fr)

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CN114310759A (zh) * 2020-10-12 2022-04-12 许纮佾 具辅助锁合的锁合套筒
CN113182821B (zh) * 2021-05-11 2022-08-16 西安秦泰汽车排放技术有限公司 一种用于夹持盘状元件的装置

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Publication number Publication date
CZ318199A3 (cs) 2000-06-14
ATE246573T1 (de) 2003-08-15
NZ500450A (en) 2002-12-20
US20010025553A1 (en) 2001-10-04
EA199900867A1 (ru) 2000-04-24
ID22453A (id) 1999-10-14
IL131989A0 (en) 2001-03-19
CA2283801A1 (fr) 1998-10-01
TR199902358T2 (xx) 2000-06-21
PL335442A1 (en) 2000-04-25
JP2000510057A (ja) 2000-08-08
EP0969948B1 (fr) 2003-08-06
DE59809212D1 (de) 2003-09-11
US6539826B2 (en) 2003-04-01
CN1251064A (zh) 2000-04-19
CZ289946B6 (cs) 2002-04-17
KR100332253B1 (ko) 2002-04-12
DE19712783C2 (de) 2000-11-09
CN1111469C (zh) 2003-06-18
JP3329832B2 (ja) 2002-09-30
NO994668D0 (no) 1999-09-24
AU6821398A (en) 1998-10-20
NO994668L (no) 1999-09-24
NO310857B1 (no) 2001-09-10
HUP0001082A3 (en) 2002-02-28
US6240811B1 (en) 2001-06-05
AU745719B2 (en) 2002-03-28
SK111699A3 (en) 2000-05-16
BR9808420A (pt) 2000-05-23
WO1998042480A1 (fr) 1998-10-01
DE19712783A1 (de) 1998-10-01
EA001019B1 (ru) 2000-08-28
KR20010005618A (ko) 2001-01-15
HUP0001082A2 (hu) 2000-12-28

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