EP4278104A1 - Rondelle de blocage et son procédé de production, et raccord à vis utilisant une telle rondelle de blocage - Google Patents

Rondelle de blocage et son procédé de production, et raccord à vis utilisant une telle rondelle de blocage

Info

Publication number
EP4278104A1
EP4278104A1 EP22700941.2A EP22700941A EP4278104A1 EP 4278104 A1 EP4278104 A1 EP 4278104A1 EP 22700941 A EP22700941 A EP 22700941A EP 4278104 A1 EP4278104 A1 EP 4278104A1
Authority
EP
European Patent Office
Prior art keywords
washer
screw
component
locking washer
screw 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.)
Pending
Application number
EP22700941.2A
Other languages
German (de)
English (en)
Inventor
Christoph Seyboldt
Humberto DO LAGO E PRETTI
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.)
Adolf Schnorr & Co Kg GmbH
Original Assignee
Adolf Schnorr & Co Kg GmbH
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 Adolf Schnorr & Co Kg GmbH filed Critical Adolf Schnorr & Co Kg GmbH
Publication of EP4278104A1 publication Critical patent/EP4278104A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/24—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by means of washers, spring washers, or resilient plates that lock against the object
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/24—Making other particular articles nuts or like thread-engaging members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/02—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with special provisions for engaging surfaces which are not perpendicular to a bolt axis or do not surround the bolt

Definitions

  • the invention relates to a lock washer for a screw connection between a screw part and a component and a method for producing such a lock washer. Furthermore, the invention relates to a screw connection in which a lock washer is provided between a screw part and a component.
  • Lock washers in particular toothed lock washers, are known from DE 44 25 837 A1.
  • Such a locking washer comprises an annular washer body which is delimited by an outer edge and an inner edge running concentrically thereto.
  • a receiving bore is provided in the disc body, which is delimited by the inner edge, in order to receive a screw part.
  • This disk body comprises an upper and lower ring surface, which has teeth continuously on the upper and lower ring surface.
  • This lock washer is arched like a disk spring, that is, set up. In the unstressed state, an outer peripheral edge of the locking washer rests on a component and an inner peripheral edge rests on a screw head to form a screw connection.
  • the invention is based on the object of proposing a lock washer and a method for its production as well as a screw connection, so that a sufficient positive and non-positive connection between the lock washer and a component and between a screw part with a countersunk head and the component is made possible with the interposition of the lock washer .
  • a lock washer for a screw connection in which an annular screw body is set up at an angle ⁇ of greater than or equal to 20° with respect to a plane formed by a circumferential front edge of the circumferential outer edge of the disc body.
  • Such a design of the locking washer in which an upper annular surface assumes an angle ⁇ of equal to or greater than 20° with respect to a peripheral outer edge, also allows a screw part with a countersunk head, in particular countersunk screws, to be driven and screwed into a countersink of a bore in the component be positively secured.
  • This arrangement of the lock washer can, after the countersunk screw has been fastened, rest against both a conical outer circumference of the countersunk head and the countersink in the bore, in order to enable this backup.
  • the ring-shaped washer body is at an angle ⁇ of 20° to 45°, preferably between 25° and 45°, in particular between 30° and 45°, relative to a plane formed by the circumferential end edge of the circumferential outer edge of the washer body. set up. This represents a preferred range for a variety of applications.
  • this angle ⁇ for setting up the ring-shaped washer body is in a range of greater than 25°, preferably greater than 30°, in particular greater than 45°.
  • Such lock washers are preferably made of spring steel, tempered spring steel, stainless steel, a non-ferrous metal alloy or a plastic.
  • the object on which the invention is based is also achieved by a method for producing a locking washer, in which a pilot hole is punched in a flat strip or a flat strip-like material, in which a cup is stamped or deep-drawn using a stamping die and a stamping counter-stamp, the inclined Circumferential surface is wider than the ring-shaped disc body of the finished locking washer and in which teeth are introduced into the inclined circumferential surface of the upper and lower ring surface, in which the embossing stamp forms the circumferential surface at an angle ⁇ with respect to a plane of the strip-shaped material at an angle ⁇ of equal to or greater than 20° is inclined, in which the pre-hole introduced into the strip material and arranged on the bottom of the cup is punched to a final size with at least one further punch and in which an outer edge of the cup is punched to the final size with a third punch and the finished safe ing disc is led out of the strip material.
  • an embossing stamp can be used to carry out the method, the angle ⁇ of which, starting from the plane of the strip-shaped material, is between 20° and 45°, preferably between 25° and 45°, in particular between 30° and 45° or alternatively greater than 25° °, preferably greater than 30°, in particular greater than 45°.
  • the object on which the invention is based is also achieved by a screw connection of at least one component and a screw partner, which are connected to a screw part, and the screw part is designed with a countersunk head and with a locking washer positioned between the screw part and the component, in which the Lock washer is formed according to one of the embodiments described above.
  • the Lock washer With such a locking washer with an erected ring-shaped disc body at an angle ⁇ of equal to or greater than 20° with respect to the plane formed by the peripheral outer edge, the locking washer is in full contact with a countersunk head in a countersink in the component and the countersunk head preferably closes flush with the surface of the component.
  • the locking washer can allow positive locking due to its toothing and the erected geometry and non-positive locking due to its shape and/or its spring action.
  • the countersunk head of the screw part preferably has a conical outer circumference, which preferably comprises a cone of 90°.
  • the component is preferably designed with a conical countersink starting from a surface of the component to the through hole in the component, in which the distance between the surface of the component and the start of the through hole has a total depth t, which consists of a "t 1 value “ and a value “ ⁇ t 1 ”.
  • the value " ⁇ t 1 " corresponds to the sheet thickness of the lock washer cos (45°).
  • the “t 1 value” corresponds to the value for countersinks according to DIN EN ISO 15065 or DIN 74. This dimensioning of the countersink means that one face of the screw part is flush with the surface of the component after the screw part has been fully tightened with the countersunk head.
  • an upper end edge of the outer edge of the upper ring surface rests against the countersink and an inner edge of the outer ring surface is raised relative to the countersink.
  • a front edge of the outer circumference, which adjoins the inner ring surface, rests against the conical outer circumference of the countersunk head of the screw part and an inner edge rests against the inner one Ring surface is lifted off the conical outer circumference.
  • the locking washer rests over its entire surface with its lower annular surface on the countersunk head and with the upper annular surface completely against the countersink in the component and preferably an end face of the countersunk head or screw part is flush with the surface of the component.
  • Figure 1 is a schematic view of an underside of a lock washer
  • FIG. 1 is a schematic side view of the lock washer according to Figure 1
  • FIG. 3 shows a schematic view from above of the locking washer according to FIG. 1,
  • FIG. 4 shows a schematic sectional view of the locking washer according to FIG. 1,
  • FIG. 5 shows a schematic side view of a first work step for producing the locking washer according to FIG. 1,
  • FIG. 6 shows a schematic side view of a further work step
  • FIG. 7 shows a schematic side view of a further subsequent work step
  • FIG. 8 shows a schematic side view of a final work step for producing the locking washer according to FIG. 1,
  • FIG. 9 shows a schematic sectional view of a screw connection in a first connection phase
  • FIG. 10 shows a schematic sectional view of a screw connection according to an alternative embodiment to FIG. 9 in a first connection phase
  • FIG. 11 shows a schematic sectional view of a tightened screw connection.
  • FIG. 1 shows a schematic view of a lock washer 11 from below.
  • Figure 2 shows a schematic side view of the lock washer 11.
  • Figure 3 shows a schematic view from above, and
  • Figure 4 shows a schematic sectional view along the line A-A in Figure 1.
  • This lock washer 11 includes a disc body 12 which is disc-shaped or ring-shaped.
  • This disk-shaped or ring-shaped disk body 12 is erected.
  • This disk body 12 includes a lower ring surface 14, which is shown in FIG. 1, and an upper ring surface 16, which is shown in FIG.
  • the upper and lower annular surfaces 14, 16 are each delimited by a circumferential outer edge 17 and a preferably concentric inner edge 18.
  • the inner edge 18 delimits a receiving bore 19 which is provided for inserting a screw part 21 (FIG. 11).
  • On the lower annular surface 14 and on the upper annular surface 16 a toothing 23 is provided which extends over the full circumference. Furthermore, the toothing 23 extends over the entire width of the lower and upper annular surface 14, 16, from the inner edge 18 to the outer edge 17.
  • a flat area can be provided adjacent to the outer edge 17 so that the teeth adjacent to the outer edge 17 are flattened in this area.
  • the toothing 23 on the bottom and the top is preferably designed as a helical toothing. Such a toothing 23 can be produced by embossing.
  • the securing disk 11 according to FIGS. 1 to 4 preferably has a disk body 12 that is set up. This is evident from the sectional view according to FIG.
  • the disk body 12 is designed in the manner of a disk spring.
  • An inner edge 18 of the disk body 12 is designed to be higher than an outer edge 17 . As a result, this lock washer 11 can generate a prestressing force acting on a screw connection.
  • the ring-shaped washer body 12 is aligned or set up at an angle of equal to or greater than 20° with respect to a circumferential end edge 20 on the outer edge 17.
  • This disk body 12 corresponds to a shell of a truncated cone.
  • This front edge 20 on the outer edge 17 lies in a plane 25.
  • the ring-shaped disc body 12 is inclined or set up relative to this plane 25 at an angle of equal to or greater than 20°. Viewed from an underside of the locking washer 11 there is a cup-shaped indentation.
  • the locking washer 11 has a truncated cone-shaped contour, in which the inclination of the conical peripheral surface or the upper annular surface 16 of the disk body 12 relative to the plane 25, which is formed by the peripheral front edge 20, encloses an angle of 20° or more .
  • the peripheral outer edge 17 can also be formed at right angles to the plane 25 .
  • the circumferential outer edge 17 is formed by a circumferential front edge 20 lying in the plane 25 and is delimited by a further or second front edge 22 arranged at a distance therefrom.
  • the first and second end edges 20, 22 lie in a plane perpendicular to plane 25.
  • This lock washer 11 can be made of steel, spring steel, corrosion-resistant steel, a light metal alloy or plastic.
  • this locking washer 11 with an annular disc body 12 set up opposite a peripheral front edge 20 of the outer edge 17 at an angle ⁇ of equal to or greater than 20°, it is preferably produced according to the work steps described below.
  • the lower and upper ring surfaces 14 , 16 are aligned parallel to one another or tapered towards the inner edge 18 .
  • the disk body 12 has a longitudinal axis 30 as seen in cross section and the lower and upper annular surfaces 14, 16 are aligned parallel or conically thereto.
  • the longitudinal axis 30 is designed as a straight line.
  • the disk body 12 is not curved along its longitudinal axis 30 or is configured without any curvature.
  • a first work step is shown in FIG.
  • a band-shaped material 41 is provided as a strip, for example.
  • This strip-shaped material 41 is fed to a first punching tool 42 .
  • a preliminary hole 44 is formed by a punch 43 of the first punching tool 42 , the circumference of which is equal to or smaller than the circumference of the inner edge 18 of the finished locking washer 11 .
  • the pre-punched strip-shaped material 41 is then fed to a first embossing tool 46 for a subsequent work step according to FIG.
  • This embossing tool 46 has an embossing stamp 47 and a counter-stamp 48 designed in the shape of a cup.
  • the edge area extending around the preliminary hole 44 is shaped as a cup 49 .
  • the teeth 23 are introduced onto the upper side and the underside of the strip-shaped material 31 .
  • the locking washer 11 is finished with a third stamping tool 54 .
  • the outer edge 17 is cut by a punch 55 and the locking washer 24 is ejected downwards by a punch die 56 .
  • FIG. 9 shows a schematic sectional view of a screw connection 31 to be formed in a first connection phase.
  • the locking washer 11 is positioned at an angle of between 20° and 45°.
  • the screw connection 31 is formed by a component 32 and a screw partner 33 to be connected thereto, the screw part 21 being fixed to the component 32 with the interposition of the locking washer 11 .
  • the locking washer 11 is positioned with the screw part 21 to the through hole 36 of the component 32 and inserted, so that a thread 35 of the screw part 21 can then act on the screw partner 33 .
  • a second front edge 22 of the outer edge 17 of the ring-shaped disc body 12 rests against a countersink 38 in the component 32 .
  • An inner edge 18 of the ring-shaped disk body 12 is raised relative to the countersink 38 .
  • This inner edge 18 can bear against a peripheral surface 39 of the countersunk head 34 .
  • the disk body 12 is pressed open.
  • the peripheral surface 39 of the countersunk head 34 presses the inner edge 18 of the disk body 12 against the countersink 38 of the component 32. This causes the lower or inner annular surface 14 to grip with the peripheral surface 39 of the countersunk head 34 and/or the upper or outer annular surface to grip 16 with the countersink 38 of the component 32 allows.
  • FIG. 10 shows an alternative embodiment to FIG.
  • the locking washer 11 is set up at an angle ⁇ of greater than or equal to 45°.
  • the locking washer 11 rests with a peripheral front edge 20 of the outer edge 17 on the peripheral surface 39 of the countersunk head 34 .
  • An outer end edge of the inner edge 18 of the locking washer 11 can bear against the countersink 38 .
  • the outer edge 17 of the disc body 12 is pressed on.
  • the depth of countersinking 38 in component 32 is designed in this screw connection 31 in such a way that, for example, the “t 1 value” known from DIN EN ISO 15065 is increased by the value “ ⁇ t 1 ”.
  • the value " ⁇ t 1 " results from the thickness of the ring-shaped disc body/cos (45°).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

L'invention concerne une rondelle de blocage pour un raccord à vis (31) ainsi qu'un procédé de production de celle-ci, ainsi qu'un raccord à vis (31) entre au moins un composant (32) et un partenaire de vis (33), qui peuvent être reliés l'un à l'autre via une partie de vis (21), la rondelle de blocage comprenant un corps de rondelle annulaire (12) qui est délimité par un rebord extérieur périphérique (17) et un rebord intérieur (18), comprenant un alésage de réception (19) qui est délimité par le rebord intérieur (18) et dans lequel la partie de vis (21) peut être insérée, comprenant une face annulaire supérieure (16) et une face annulaire inférieure (14) disposées sur le corps de rondelle annulaire (12), et comprenant une denture (23) qui est disposée sur la face annulaire inférieure (14) et la face annulaire supérieure (16) et qui s'étend à travers la largeur de la face annulaire particulière (14, 16) et sur toute la périphérie, le corps de rondelle annulaire (12) étant placé à un angle (α) supérieur ou égal à 20° par rapport à un plan (25) formé par un bord avant périphérique (20) du rebord extérieur périphérique (17).
EP22700941.2A 2021-01-18 2022-01-17 Rondelle de blocage et son procédé de production, et raccord à vis utilisant une telle rondelle de blocage Pending EP4278104A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021100880.8A DE102021100880A1 (de) 2021-01-18 2021-01-18 Sicherungsscheibe und Verfahren zu dessen Herstellung sowie Schraubverbindung mit einer solchen Sicherungsscheibe
PCT/EP2022/050892 WO2022152903A1 (fr) 2021-01-18 2022-01-17 Rondelle de blocage et son procédé de production, et raccord à vis utilisant une telle rondelle de blocage

Publications (1)

Publication Number Publication Date
EP4278104A1 true EP4278104A1 (fr) 2023-11-22

Family

ID=80050627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22700941.2A Pending EP4278104A1 (fr) 2021-01-18 2022-01-17 Rondelle de blocage et son procédé de production, et raccord à vis utilisant une telle rondelle de blocage

Country Status (7)

Country Link
US (1) US20240102506A1 (fr)
EP (1) EP4278104A1 (fr)
KR (1) KR20230133279A (fr)
CN (1) CN116724176A (fr)
DE (1) DE102021100880A1 (fr)
MX (1) MX2023008194A (fr)
WO (1) WO2022152903A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2052063A (en) 1935-12-16 1936-08-25 Brewer Titchener Corp Stackable washer and means for fabricating the same
FR1192452A (fr) 1957-12-21 1959-10-27 Adolf Schnorr K G Dispositif de sûreté pour vis
DE1129779B (de) 1958-07-09 1962-05-17 Adolf Schnorr K G Schraubensicherung
DE1974976U (de) 1966-10-08 1967-12-14 Tunejiro Koga Federnde unterlagscheibe fuer einen schraubbolzen mit senkkopf.
DE2610401C3 (de) 1976-03-12 1981-10-29 Adolf Schnorr GmbH & Co KG Spezialfabrik für Tellerfedern, 7032 Sindelfingen Schraubensicherung
DE4425837C2 (de) 1994-07-21 2001-07-05 Schnorr Adolf Gmbh Co Kg Verfahren zur Herstellung von Sicherungsscheiben
US7331874B2 (en) * 2006-07-05 2008-02-19 Tech Stell Co., Ltd. Method for producing circular washer
CN209278311U (zh) * 2018-11-15 2019-08-20 西南交通大学 一种弹性防松垫片
KR102202422B1 (ko) * 2018-12-12 2021-01-12 주식회사 한화 접시머리 볼트의 풀림 방지용 와셔 및 이를 포함한 접시머리 볼트 구조체

Also Published As

Publication number Publication date
WO2022152903A1 (fr) 2022-07-21
MX2023008194A (es) 2023-07-18
KR20230133279A (ko) 2023-09-19
CN116724176A (zh) 2023-09-08
US20240102506A1 (en) 2024-03-28
DE102021100880A1 (de) 2022-07-21

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