WO2019053348A1 - Systeme d'indexation d'une piece - Google Patents
Systeme d'indexation d'une piece Download PDFInfo
- Publication number
- WO2019053348A1 WO2019053348A1 PCT/FR2018/052075 FR2018052075W WO2019053348A1 WO 2019053348 A1 WO2019053348 A1 WO 2019053348A1 FR 2018052075 W FR2018052075 W FR 2018052075W WO 2019053348 A1 WO2019053348 A1 WO 2019053348A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- indexing
- nut
- screw
- piece
- cage
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
- B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
- B62D65/024—Positioning of sub-units or components with respect to body shell or other sub-units or components
Definitions
- the invention lies in the field of assembling parts of a vehicle and more particularly relates to a system for indexing a part.
- the invention further relates to an indexing system of a front facade block of a vehicle.
- the front panel of a vehicle closes in front of the engine compartment and its function is to regulate the temperature.
- This block is generally composed of a frame carrying a heat exchanger, such as a radiator of engine cooling circuit or charge air cooling circuit, or a condenser air conditioning circuit of the passenger compartment.
- This front panel block is attached to the vehicle structure and more particularly to the left and right front stretchers extending on either side of the engine. This fixing is done by means of two elements called “facade supports" each carrying a reinforcement on which is fixed said block.
- the frame of the front panel block also carries the front bumper of the vehicle.
- the front bumper When mounting the front panel block, it is desired that the front bumper is flush with the hood of the vehicle above. However, positional games may occur, and this outcrop is not always obtained.
- indexing step it is known to use an indexing system comprising two plates each disposed beneath one of the two reinforcements and carrying respectively four holes. Three of the holes are each associated with a nut welded to the plate, and a hole is not associated with a nut. These nuts are welded because they are not accessible during the indexing step. Screws can therefore simply be screwed into these nuts without the need to keep them in position.
- Each reinforcement comprises meanwhile three holes superimposed on each hole associated with a nut of the wafer and a buttonhole superimposed on the hole not associated with a nut. Initially, the pads are loosely attached to the reinforcements using two screws each screwed into a hole associated with a nut.
- the frame of the front panel block is then inserted by indexing pins in the buttonholes and the non-associated holes to a nut.
- a template is then placed and anchored to the frame of the front panel block.
- An operator will subsequently partially close the cover so that the latter cooperates with said template. This cooperation will cause a displacement of the frame of the front panel block and thus a displacement of the pads.
- the position of the plates is then fixed by completing the screwing of the two screws.
- the front panel block is then attached to the reinforcements of the facade supports by screwing screws in the last holes of the plates associated with a nut.
- the document FR2820706 discloses a motor vehicle front unit assembly comprising a bumper, optical blocks and wings, each optical block and each wing front part of which are fixed rigidly to one of the flexible front beams of the vehicle in one and the same attachment point. Said beams having an elasticity greater than that of the front face block, they are likely to deform elastically depending on relative movements of adjustment of the bumper skin, the wing and / or the optical block. Such a system however does not index the position of the front panel block relative to the hood during assembly, but acts during the life of the vehicle so as to automatically adjust the movement of the parts of said block together.
- EP1544035 discloses an assembly comprising a structural front part, a wing front part, a flexible beam and an optical block fixed on said beam.
- the assembly further comprises a centering and guiding piece of the front beam and the wing relative to the front part of the structure.
- This centering piece is fixed on the front structural part in a position that can be adjusted during assembly through a square hole in which a screw is mounted.
- Such a configuration allows an adjustment of the part along two orthogonal axes.
- Such a system is however cumbersome and does not index the front panel block relative to a third room independent of the one to which this block is attached.
- the invention aims to address the problem encountered by the prior art by proposing a new indexing system of a first part intended to be fixed to a second part configured to limit the number of screws required for the indexation of the first piece.
- the subject of the invention is an indexing system of a first part intended to be fixed to a second part, remarkable in that it comprises an indexing screw and a device for fixing said screw, said indexing screw comprising a head for indexing the position of the first part and a rod intended to be passed through the second part, said fixing device comprising a nut enclosed in a cage intended to be fixed to said second part, said cage having dimensions greater than those of said nut so that the latter can be moved in at least one direction.
- the cage has dimensions greater than those of said nut so that the latter can be moved in two directions.
- the invention proposes a system where a single screw serves both to index the first part and to fix the position of this indexing. .
- This is advantageously allowed by a nut for fixing the screw enclosed in a cage.
- the cage has dimensions greater than the nut so that it can be movable along at least one axis.
- the nut can then be moved together with the screw during the indexing operation.
- the indexing is performed by moving the indexing screw in response to the movement of the first part when it is positioned relative to a third part. Note that the nut and the cage in which it is enclosed, are different from the cage nuts trade, since they do not offer degrees of freedom of the nut in said cage contrary to the invention.
- the indexing screw is simply screwed into the nut so as to fix it in position.
- the first piece is then attached to the second piece.
- the indexing system is less cumbersome than those presented by the prior art, which makes it possible, for example, to reduce the size of the facade support reinforcements and thus to increase the dimensions of the front facade unit in the transverse direction of the vehicle.
- the cage having a bottom and the nut having an upper surface and a lower surface in contact with the bottom of the cage; the cage comprises at least one lateral retaining wing provided with a flap being placed facing the upper surface of the nut.
- a portion of the upper surface of the nut is not covered by the flap of the lateral retaining wing or wings and said portion of the upper surface of the nut has at least one bulge. More preferably, said portion of the upper surface has a single bulge extending between two edges of said surface diametrically opposite each other. This or these bulges prevent the nut from turning on itself when screwing the screw. Indeed, during the rotation of the nut by screwing the screw, this or these bulges will come into contact with a lateral retaining wing provided with a flap, thereby stopping the rotational movement of said nut.
- the nut is a right pad or a disk.
- the nut comprises a threaded hole of diameter d for screwing the indexing screw
- the cage has a support part, on which the nut rests, having a hole of diameter larger than d and said holes are superimposed on one another.
- the hole of the support part acts as a buttonhole and defines the space of freedom for the displacement of the indexing screw during the indexing of the first part.
- the indexing screw comprises a flange between its head and its rod, and is of diameter greater than the diameter of the hole of the support portion of the cage.
- the screw is held in place relative to the second part, regardless of the indexing position.
- the cage comprises at least one tab for attachment to the second part.
- the invention also relates to a vehicle comprising at least one indexing system of a first part fixed to a second part as defined above, said system comprising an indexing screw and a device for fixing said screw, said screw indexing device comprising a head for indexing the position of the first piece and a rod passed through the second piece, said fixing device comprising a nut enclosed in a cage fixed to said second piece and having dimensions greater than those of said nut so that the latter can be moved in said cage in at least one direction, preferably at least two directions.
- the nut comprises a tapped hole of diameter d for screwing the indexing screw
- the second piece has a hole of diameter greater than d for the passage of the indexing screw.
- the head of the indexing screw is received in a hole of the first part, the diameter of said hole being adjusted to the diameter of the head of the indexing screw.
- the second piece comprises at least one hole associated with a nut and the first piece is fixed to the second piece by a fastening screw screwed into said nut.
- said one or more nuts are welded to the second part.
- the first part comprises at least one hole traversed by said one or more of said fixing screws and of greater diameter than said one or one of said holes of the second part.
- the or at least one fixing screw comprises a head and a rod separated by a collar of diameter greater than the hole of the first part that the screw passes through.
- the invention finally relates to a method of assembling a first part on a second part comprising a step of indexing the first part relative to a third part by means of an indexing system as defined above.
- the indexing step comprises a sub-step of placing the first piece on the head of the indexing screw and another substep of moving the first piece causing a displacement of the screw indexing.
- the indexing step is completed by screwing the indexing screw into the nut disposed in the cage.
- Figure 1 is a side view of an indexing system according to the invention.
- FIG. 2 is a sectional view of a first part indexed by the indexing system of Figure 1 and attached to a second part.
- understand is synonymous with “include” and is not limiting in that it allows the presence of other elements in the indexing system or the vehicle to which it refers. It is understood that the term “understand” includes the words “consist of”.
- front and “rear” as well as the “longitudinal” and “transverse” directions will be understood in relation to the general orientation of the vehicle.
- the terms “low” and “lower” will indicate a greater proximity to the ground than the terms “high” and “higher” respectively.
- the same references designate identical or similar elements.
- FIG 1 shows an exploded view of an indexing system 1 according to the invention of a first part to be fixed to a second part (shown in Figure 2).
- the first piece may be, for example, a front facade block of a vehicle and the second piece a facade backing reinforcement.
- the indexing system 1 of the invention is composed of two parts, an indexing screw 3 and a device for fixing the screw comprising a nut 5 enclosed in a cage 7.
- the cage 7 is intended to be fixed to the second piece (as shown in Figure 2).
- the nut 5 comprises an upper surface 9 and a lower surface (not visible), its lower surface being a contact surface by which it rests on the cage 7.
- the cage 7 On its side, the cage 7 comprises a support part 1 1 having a bearing surface on which the nut 5 rests. As can be seen, the cage 7 has dimensions greater than that of the nut 5 so that the nut 5 can be moved in two directions. Preferably, these directions are orthogonal. When this system is used, for example in a vehicle, these two directions may correspond to the longitudinal and transverse directions of said vehicle.
- the indexing screw 3 comprises a head 13 which has the function of indexing the position of the first part during a step of indexing said part with respect to a third part, before said first part is fixed to the second room. This head 13 therefore acts as a marker of the correct position of the first piece relative to the third piece, so that it is fixed to the second piece in the right position.
- the indexing screw 3 further comprises a threaded rod 15 intended to be passed through the second part for its screwing into the nut 5.
- a threaded rod 15 intended to be passed through the second part for its screwing into the nut 5.
- FIG. 2 showing a sectional view of a first part 17 indexed and fixed to a second part 19, the fixing device of the indexing screw is disposed on one side of the second part 19 and the head 13 of said screw 3 is disposed on the other side.
- the cage 7 may comprise at least one lateral retaining wing 21 provided with a flap on the upper surface 9 of the nut 5.
- two lateral retaining wings 21 arranged facing each other each have a flap on the upper surface 9 of the nut 5.
- the cage 7 comprises at least three lateral retaining wings 21 provided with flaps, preferably at least four. These lateral retaining wings 21 provided with flaps ensure a better retention of the nut 5. Indeed, these retaining wings 21 limit the movements in height of the nut 5 which could arrange it obliquely with respect to the bearing surface of the support portion 1 1 of the cage 7, and thus interfere with the screwing of the indexing screw 3.
- part of the upper surface 9 of the nut 5 is not covered by the or the retaining wings, and in this part the upper surface 9 has at least one bulge 23
- This or these bulges 23 have the role of stopping the rotation of the nut 5 when the screw is screwed into said nut 5 by coming into contact with the or at least one of the flaps of the retaining wings 21. Otherwise, the nut 5 may turn on itself.
- a single bulge 23 is present and extends between two diametrically opposite edges of the upper surface 9.
- the bulge or bulges may also be abutments, for example of cylindrical shape.
- the bulge or bulges 23 are arranged so as not to limit the movements of the indexing screw 3 during its positioning.
- the nut 5 can have any shape.
- the nut 5 may be cylindrical or parallelepipedic.
- the nut 5 is a tile as shown.
- a nut 5 in the form of a block has the advantage of better guiding the indexing screw 3 when positioning the latter.
- the cage 7 is fixed by any means to the second piece.
- the cage 7 can be fixed by welding or screwing, preferably it is fixed by welding. More preferably, the cage 7 comprises at least one lug 25 for attachment to the second part. This tab can be fixed by any means to the second part, for example by welding or screwing.
- the nut 5 comprises a threaded hole 27 of diameter d for screwing the indexing screw 3 and the support portion 11 of the cage 7 has a larger diameter hole. to d (visible in Figure 2).
- the threaded hole 27 of the nut 5 is superimposed on the hole of the support portion 1 1 of the cage 7.
- These two holes are traversed by the pin 15 of the indexing screw and the hole of the support portion 11 of the cage 7 serves buttonhole.
- the second piece 19 has a hole 29 through which the rod 15 of the screw and whose dimensions are greater than those of d.
- said dimensions are greater than or equal to those of the hole of the support portion 1 1 of the cage 7.
- said dimensions are smaller than those of the hole of the support portion 1 1 of the cage 7.
- hole 29 of the second piece 19 also serves as a buttonhole.
- the indexing screw 3 comprises a flange 31 disposed between its head 13 and its rod 15 and of dimensions greater than those of the hole 29 of the second part 19 so as to ensure a bearing on the second piece 19 regardless of its positioning for indexing.
- said flange 31 has dimensions greater than those of the hole of the support portion 1 1 of the cage 7.
- the first piece 17 will first be indexed relative to a third piece (not visible).
- the cage 7 of the indexing system 1 is fixed to the second piece 19 and the indexing screw 3 will be inserted through the second piece 19 and loosely fastened to the nut 5.
- the first piece 17 goes then be disposed on the second piece 19 relative to the head 13 of the indexing screw 3.
- This arrangement is made using a hole larger than those of the head 13 of the indexing screw 3 and is passed on said head 13 so that the edges of said hole surround the head 13, as can be seen in FIG. 2.
- this arrangement can be achieved thanks to a shape complementary to the head of the screw, and optionally the collar, at the level of the first piece.
- the first piece 17 is moved relative to the third piece. Once the displacement is completed, the attachment of the indexing screw 3 in the nut 5 is completed so as to fix in position the first part.
- the first piece 17 is then attached to the second piece 19.
- the second part 19 comprises at least one hole (not visible) associated with a nut 33 in which a fixing screw 35 passing through the two parts (17, 19) is screwed.
- the nut 33 is preferably welded to the second piece 19, in particular if it is not accessible during the step of fixing the first piece 17.
- the first piece 17 has a hole of dimensions greater than those of the diameter of the rod of the fixing screw 35 and greater than those of the associated hole of the second part 19.
- the nut 33 being fixed to the second part 19, it will always have the same position, but the first part 17 will have a positioning relative to the position of the indexing screw 3. A wider hole at the first part 17 thus compensates for this relative positioning.
- the fixing screw 35 preferably comprises a flange of dimensions greater than those the hole of the first piece to provide support, regardless of the positioning of the first piece 17 relative to the second piece 19.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Connection Of Plates (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201880059417.1A CN111315643B (zh) | 2017-09-12 | 2018-08-20 | 部件的转位系统 |
BR112020003366-9A BR112020003366A2 (pt) | 2017-09-12 | 2018-08-20 | sistema de indexação de uma peça e veículo compreendendo referido sistema |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1758426 | 2017-09-12 | ||
FR1758426A FR3070892B1 (fr) | 2017-09-12 | 2017-09-12 | Systeme d’indexation d’une piece |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019053348A1 true WO2019053348A1 (fr) | 2019-03-21 |
Family
ID=60138589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2018/052075 WO2019053348A1 (fr) | 2017-09-12 | 2018-08-20 | Systeme d'indexation d'une piece |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN111315643B (fr) |
BR (1) | BR112020003366A2 (fr) |
FR (1) | FR3070892B1 (fr) |
WO (1) | WO2019053348A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3100525B1 (fr) * | 2019-09-09 | 2022-03-11 | Psa Automobiles Sa | Gabarit pour le montage d’un element et interface de fixation complementaire |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20017234U1 (de) * | 2000-10-08 | 2001-03-22 | Schmidt Heiko | Käfigmutter sowie Werkzeug zum Fixieren der Käfigmutter |
FR2820706A1 (fr) | 2001-02-15 | 2002-08-16 | Faurecia Ind | Ensemble de bloc avant de vehicule automobile comportant un dispositif ameliore de fixation des composants, et vehicule equipe d'un tel ensemble |
EP1544035A1 (fr) | 2003-12-19 | 2005-06-22 | Faurecia Bloc Avant | Ensemble de partie avant de véhicule automobile comportant des moyens perfectionnés de fixation et d'ajustement en position, et véhicule automobile pourvu d'un tel ensemble |
EP1852332A1 (fr) | 2006-05-04 | 2007-11-07 | Peugeot Citroen Automobiles SA | Procédé d'assemblage de la façade avant d'un véhicule |
EP2551187A1 (fr) * | 2010-03-23 | 2013-01-30 | Mitsubishi Heavy Industries, Ltd. | Bouchon, structure fixée utilisant celui-ci et avion doté de ladite structure fixée |
EP3211253A1 (fr) * | 2015-05-19 | 2017-08-30 | Aoyama Seisakusho Co., Ltd. | Écrou enfermé |
EP3287362A1 (fr) * | 2016-08-24 | 2018-02-28 | The Boeing Company | Aile et procédé de fabrication d'une aile |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2418206C2 (ru) * | 2006-01-05 | 2011-05-10 | Профиль-Фербиндунгстехник Гмбх Унд Ко. Кг | Крепежный элемент, узловая сборка, состоящая из крепежного элемента и детали из листового металла, а также способ закрепления крепежного элемента на детали из листового металла |
JP4939597B2 (ja) * | 2009-12-11 | 2012-05-30 | 本田技研工業株式会社 | 取付部品の取付構造 |
US9605706B2 (en) * | 2014-05-07 | 2017-03-28 | Sungwoo Hitech Co., Ltd. | Rivet nut unit and mounting method thereof |
CN104454904A (zh) * | 2014-11-04 | 2015-03-25 | 贵州航天精工制造有限公司 | 一种盲端浮动托板螺母组件 |
-
2017
- 2017-09-12 FR FR1758426A patent/FR3070892B1/fr active Active
-
2018
- 2018-08-20 BR BR112020003366-9A patent/BR112020003366A2/pt active Search and Examination
- 2018-08-20 CN CN201880059417.1A patent/CN111315643B/zh active Active
- 2018-08-20 WO PCT/FR2018/052075 patent/WO2019053348A1/fr active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20017234U1 (de) * | 2000-10-08 | 2001-03-22 | Schmidt Heiko | Käfigmutter sowie Werkzeug zum Fixieren der Käfigmutter |
FR2820706A1 (fr) | 2001-02-15 | 2002-08-16 | Faurecia Ind | Ensemble de bloc avant de vehicule automobile comportant un dispositif ameliore de fixation des composants, et vehicule equipe d'un tel ensemble |
EP1544035A1 (fr) | 2003-12-19 | 2005-06-22 | Faurecia Bloc Avant | Ensemble de partie avant de véhicule automobile comportant des moyens perfectionnés de fixation et d'ajustement en position, et véhicule automobile pourvu d'un tel ensemble |
EP1852332A1 (fr) | 2006-05-04 | 2007-11-07 | Peugeot Citroen Automobiles SA | Procédé d'assemblage de la façade avant d'un véhicule |
EP2551187A1 (fr) * | 2010-03-23 | 2013-01-30 | Mitsubishi Heavy Industries, Ltd. | Bouchon, structure fixée utilisant celui-ci et avion doté de ladite structure fixée |
EP3211253A1 (fr) * | 2015-05-19 | 2017-08-30 | Aoyama Seisakusho Co., Ltd. | Écrou enfermé |
EP3287362A1 (fr) * | 2016-08-24 | 2018-02-28 | The Boeing Company | Aile et procédé de fabrication d'une aile |
Also Published As
Publication number | Publication date |
---|---|
BR112020003366A2 (pt) | 2020-08-18 |
CN111315643A (zh) | 2020-06-19 |
FR3070892A1 (fr) | 2019-03-15 |
FR3070892B1 (fr) | 2019-10-25 |
CN111315643B (zh) | 2022-07-15 |
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