EP4483067A1 - Käfigmutter - Google Patents
KäfigmutterInfo
- Publication number
- EP4483067A1 EP4483067A1 EP23700932.9A EP23700932A EP4483067A1 EP 4483067 A1 EP4483067 A1 EP 4483067A1 EP 23700932 A EP23700932 A EP 23700932A EP 4483067 A1 EP4483067 A1 EP 4483067A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nut
- cage
- embossing
- edge
- spacer
- 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
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
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
- F16B37/044—Nut cages
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- 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
- F16B37/00—Nuts or like thread-engaging members
- F16B37/14—Cap nuts; Nut caps or bolt caps
Definitions
- the invention relates to a cage nut according to the preamble of claim 1 and a method for producing such a cage nut according to claim 10.
- Cage nuts are used to screw tolerance-critical components to the body (e.g. for screwing the seat, the door lock or the battery housing, etc.). These are nuts with a wide variety of thread sizes, which in most cases consist of a square steel element into which the respective thread (or just a hole for a self-tapping screw) is made. This steel element, in turn, is located in a so-called nut cage, in which it is embedded both captively and torsionally.
- a component can later be screwed on during assembly with relatively large tolerances without the use of a counter-holder to absorb the torque during the screw connection.
- the screw nut is found by a screw with a threading tip, so that the screw nut is automatically centered on the screw, which enables process-reliable screwing despite component tolerances.
- the nut cage is welded in the body shop and therefore passes through the die together with the body Painting system including KTL dip painting.
- the body Painting system including KTL dip painting.
- the nut in the nut cage sticks more or less extensively to the body panel or the nut cage, due to the fact that the extremely thin KTL dip paint spreads everywhere and thus also between the nut and the counter surface of adhesive forces does not run off and in the subsequent hardening oven during drying between them.
- the nut in order for the nut to be able to fulfill its actual function, it must first be loosened again by applying a force.
- this can (but does not have to) be done, for example, by an automated screwing device using the compressive force on the screw when inserting the threading tip into the screw hole in the nut.
- this does not work with a manual screw connection, so that the worker has to loosen the screw nut from its adhesive connection beforehand by applying a force, for example with a hammer blow.
- Cage nut arrangements are known from DE 11 2017 008 057 T5, from US 2004/0013492 A1 and from JP 2014001839 A2.
- the object of the invention is to provide a cage nut and a method for producing a cage nut in which, compared to the prior art, an operationally reliable function of the cage nut can be easily guaranteed in terms of process technology.
- the invention relates to a cage nut for connection to a support element, in particular a sheet metal part of a bodywork.
- the cage nut has a screw nut and a nut cage that can be fastened to the support element in a stationary manner, in particular by a welded connection.
- the nut In the interior of the cage, the nut is captive in a non-use position with play and arranged so that it cannot rotate, so that the nut can be displaced by an axial path between axial stops in a screwing direction.
- the nut In a position of use, the nut is screwed to a screw bolt, by means of which an attachment can be braced on the support element.
- At least one spacer is formed on the front side of the screw nut facing the axial stop, which spacer protrudes from the front side of the screw nut.
- the front side of the screw nut can be brought into contact with the axial stop via the spacer.
- the cross-section of the spacer is greatly reduced compared to the front side of the nut, which also greatly reduces the adhesive connection between the nut and the cage axial stop that occurs when it is not in use (after the KTL process has taken place).
- the spacer on the nut is produced in a forming process.
- the nut is deformed to create the spacer. It is preferred if, in the forming process, the forming force acts outside of the front face of the screw nut on a circumferential edge side of the screw nut. In this way, the screw nut faces remain free of mechanical interference during the forming process.
- at least one spacer is formed on each of the screw nut end faces.
- the forming process can be an embossing process in which at least one embossing is introduced into the screw nut.
- the embossing is preferably positioned at least in the vicinity of the front face of the screw nut.
- the embossing cannot be formed directly in the front side of the screw nut, but rather formed in the edge side of the nut edge with an axial offset to the front side of the screw nut.
- the screw nut can have a polygonal profile with profile edges extending between the screw nut end faces. The profile edges converge at nut outer corners with marginal edges. At the edge edges, the respective screw nut face merges into the screw nut edge side.
- the embossing is formed on at least one profile edge in such a way that the embossing interrupts the course of the profile edge.
- the embossing when forming the embossing on the profile edge, a reduced forming force is sufficient, compared to forming the embossing on a flat edge side.
- the embossing can also be positioned outside of the profile edges, that is to say it can be arranged at a distance from the profile edges in the circumferential direction.
- the embossing process can take place directly on the outer corner of the nut, at which an axially running nut profile edge with nut edge edges running transversely thereto converge.
- the embossing is formed directly on the outside corner of the nut.
- the embossing can be positioned in the nut edge side in such a way that the adjacent edge profile of the nut no longer extends linearly, but rather is arched to form the spacer. In this case is the edge course is not interrupted by the embossing.
- the embossing can also be formed directly on the edge, so that the course of the edge edge is interrupted by the embossing. It is simple in terms of manufacturing technology if the embossing extends continuously, for example in the form of a groove, between the two axial screw nut end faces. In this way, the spacers are produced simultaneously on both screw nut end faces by exactly one embossing tool and in a single embossing process.
- 3 to 7 each show views of the cage nut in different exemplary embodiments.
- a sheet metal part 1 of a vehicle body has a screw point 3 .
- a vehicle rear seat for example, is screwed to the screw point 3 via a screw bolt 7 as an add-on part 5 on the upper side of the body sheet metal part 1 .
- the screw bolt 7 is guided through a screw hole 9 in the sheet metal part 1 of the bodywork and is in threaded engagement with a nut 11 which is arranged on the side of the sheet metal body part 1 opposite the attachment 5 .
- the screw nut 11, together with a nut cage 13, is part of a cage nut 15, which is shown in the screwed state in FIG.
- the nut cage 13 is welded to the sheet metal part 1 of the bodywork.
- the cage nut 15 is shown in FIG.
- the nut cage 13 has axial stops 17, 19, between which the nut 11 can be displaced by an axial path Aa in the screwing direction S (FIG. 2).
- the nut cage 15 has transverse stops between which the nut 11 can be displaced transversely to the screwing direction S over a transverse path.
- the nut 11 is designed with a cuboid base body 21 whose axial end faces 23 can be brought into contact with the respective facing axial stops 17 , 19 of the nut cage 15 .
- the nut base body 21 has a square profile with a total of four profile edges 25 .
- Each of the profile edges 25 converges at a screw nut outer corner 27 with edge edges 29 at which the respective screw nut end face 23 merges into a screw nut edge side 31 .
- the nut cage 15 with the screw nut 11 loosely mounted therein is welded to the body sheet metal part 1 in the body shop.
- the body panel part 1 is then subjected to a KTL process.
- the add-on part 5 is screwed to the screw point 3 of the sheet metal part 1 of the bodywork. If there is extensive contact between a screw nut end face 23 and a facing axial stop 17, 19 of the nut cage 15, there is a risk that the screw nut 11 will stick to the facing axial stop 17, 19 of the nut cage 15 with the KTL paint being interposed.
- the nut 11 according to the invention has spacers 33 of small cross section on each of its two axial end faces 23, via which the nut 11 can be brought into contact with the axial stops 17, 19 of the nut cage 15.
- a core of the invention consists in the fact that the spacers 33 are formed in the screw nut 11 in a simple manner in terms of production technology by means of an embossing process.
- an embossing 35 is introduced into the screw nut 11 with the aid of an embossing tool. This causes a flow of material, causing the screw nut End face 23 bulges by a profile height h to form the spacer 33 in the vicinity of the embossing 35 .
- An embossing 35 is formed on each of the profile edges 25 in FIG.
- the embossing 35 is formed in the nut profile edges 25 with an axial offset Az to the two nut end faces 23 . In this way, there are spacers 33 that are pulled up axially directly on the outer corners 27 of the nut 11 and protrude from the respective nut end faces 23 by a profile height h.
- the embossings 35 are not formed directly in the profile edges 25, but rather each with a slight axial offset relative to the edge edges 29 and on the flat edge sides 31 of the screw nut.
- the course of the edge edges is not interrupted by the embossing 35 . Rather, the course of the edge edges arches up by the profile height h, forming the spacer 33 .
- the embossing tool is directed with a forming force directly onto the respective outer corner 27 of the screw nut, as a result of which a spacer 33 builds up on the respective end face 23 of the screw nut.
- the embossings 35 are formed directly on the edge edges 29 of the screw nut, as a result of which the course of the edge edges is interrupted by the embossings 35 .
- embossings 35 are introduced independently of one another on the axially opposite marginal edges 29 of the nut base body 20 .
- the respective embossing 35 extends in the form of a groove and continuously between the two axial screw nut end faces 23. In this way, a spacer 33 is formed on each of the two axial screw nut end faces 23 using an embossing tool and an embossing process generated.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Body Structure For Vehicles (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022104013.5A DE102022104013A1 (de) | 2022-02-21 | 2022-02-21 | Käfigmutter |
| PCT/EP2023/050612 WO2023156088A1 (de) | 2022-02-21 | 2023-01-12 | Käfigmutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4483067A1 true EP4483067A1 (de) | 2025-01-01 |
Family
ID=85018207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23700932.9A Pending EP4483067A1 (de) | 2022-02-21 | 2023-01-12 | Käfigmutter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250092905A1 (de) |
| EP (1) | EP4483067A1 (de) |
| CN (1) | CN118541549A (de) |
| DE (1) | DE102022104013A1 (de) |
| WO (1) | WO2023156088A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2822850A (en) * | 1952-09-17 | 1958-02-11 | Earl E Howe | Method of forming welding projections on a standard nut blank and article so formed |
| CN100549438C (zh) | 2002-07-16 | 2009-10-14 | 阿库门特知识产权有限公司 | 具有支座螺母的锁紧螺母组件 |
| AU2007201612B2 (en) | 2006-06-09 | 2013-10-17 | Itw Australia Pty Ltd | Panel connection system |
| JP5357308B1 (ja) | 2012-06-20 | 2013-12-04 | タキゲン製造株式会社 | ケージナット |
| JP6529367B2 (ja) | 2015-07-13 | 2019-06-12 | 株式会社青山製作所 | ケースナット |
| CN111279088B (zh) | 2017-11-06 | 2022-07-15 | 伊利诺斯工具制品有限公司 | 锁紧螺母组装件 |
-
2022
- 2022-02-21 DE DE102022104013.5A patent/DE102022104013A1/de active Pending
-
2023
- 2023-01-12 US US18/727,103 patent/US20250092905A1/en active Pending
- 2023-01-12 WO PCT/EP2023/050612 patent/WO2023156088A1/de not_active Ceased
- 2023-01-12 CN CN202380016964.2A patent/CN118541549A/zh not_active Withdrawn
- 2023-01-12 EP EP23700932.9A patent/EP4483067A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US20250092905A1 (en) | 2025-03-20 |
| DE102022104013A1 (de) | 2023-08-24 |
| WO2023156088A1 (de) | 2023-08-24 |
| CN118541549A (zh) | 2024-08-23 |
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Legal Events
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Effective date: 20260305 |