WO2000017022A1 - Piece de transmission, notamment bras d'essuie-glace, en materiau plastique a charges differenciees - Google Patents
Piece de transmission, notamment bras d'essuie-glace, en materiau plastique a charges differenciees Download PDFInfo
- Publication number
- WO2000017022A1 WO2000017022A1 PCT/FR1999/002280 FR9902280W WO0017022A1 WO 2000017022 A1 WO2000017022 A1 WO 2000017022A1 FR 9902280 W FR9902280 W FR 9902280W WO 0017022 A1 WO0017022 A1 WO 0017022A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shell
- sole
- transmission part
- part according
- fibers
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/34—Wiper arms; Mountings therefor
- B60S1/3425—Constructional aspects of the arm
- B60S1/3427—Arm piece, link piece and mounting head formed as one element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
- B60S1/34—Wiper arms; Mountings therefor
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/02—Constructions of connecting-rods with constant length
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/09—Windscreen wipers, e.g. pivots therefore
Definitions
- the invention relates to mechanical transmission by elongated parts made of plastic material and exposed, at least partially, to the open air.
- Such parts are used in particular as a wiper arm, but are also used in the form of connecting rods in mechanical transmission mechanisms.
- plastic materials are subject to severe environmental constraints: mechanical forces at high repetition frequency, temperature variations, exposure to UV radiation, etc. This results in accelerated aging both at the level of mechanical behavior, by the appearance of stiffness defects and deformations by creep, and at the physico-chemical level by the action of UV rays.
- GB patent 2021939 describes the implementation of an arm cap forming a complete fairing of this arm.
- the cap is fixed by regulators and can be made of plastic.
- patent FR 2557052 an overmolding of the metal arm is provided to form a plastic fairing.
- the invention relates to a mechanical transmission part exposed at least partially to the open air, more particularly a wiper arm, made of plastic material and comprising connection means arranged on portions of ends of the room; this part is formed, outside these end portions, of a shell part, forming a fairing and made of a thermoplastic material loaded substantially with at most 30% of fibers; and a sole part not directly exposed, the sole part being made of thermoplastic material loaded substantially with at least 40% fiber.
- the shell part which is the "visible" part, exposed to the environment, is dedicated to the style function by masking any ribs and by resisting physical-chemical attacks, while the sole part, facing the glass and therefore not directly exposed, achieves the basic architecture of the part by exerting, by its rigidity greater than that of the exposed part, mechanical strength of the assembly, with reduced permanent deformation.
- the fact of presenting a closed structure multiplies the inertia of the arm to external attacks by a factor of four.
- molding can be simplified by eliminating or reducing the number of ribs.
- the percentage of fibers is substantially 20 to 30% for the shell part and 40 to 50% for the sole part;
- the fibers are glass fibers or textile fibers such as aramid, polyamides or polyesters; - the hull part has a system of ribs wrapped by the fairing;
- the sole is made in the form of a plate having a system of ribs in order to optimize the mechanical behavior of the entire part;
- the plate is inclined relative to the longitudinal axis of the shell to improve the aerodynamic behavior of the arm.
- the wiper arm 10 has a generally elongated shape around a median axis X'X, the arm consisting of a shell 12, a plate 14, of an end section 16 and of a free end portion 18.
- the section 16 is formed to ensure the articulated mounting of the arm 10 on alternating rotation drive means (not shown) and the portion 18 is formed for the attachment of a wiper blade (not shown) on the arm 10.
- a transverse rod 15 is intended for the attachment of a wiper pressure spring (not shown).
- the shell 12 comprises, as illustrated on the cutaway part of Figures 1a and 1b, reinforcing ribs 13 molded and made of inclined transverse partitions forming braces.
- the thermoplastic material of the shell 12 is loaded with 25% glass fibers by weight, while the thermoplastic material of the plate 14, on which the shell 12 rests, is loaded with 45% fiber glass by weight.
- the techniques for incorporating fibers during molding are known to those skilled in the art.
- the sole is fixed to the shell by welding. Before welding the plate, it is possible to incorporate a channel and sprinkler nozzles to install the windshield washer system.
- FIG. 2 shows the shape of an inverted U of the shell 12, delimited by two lateral cheeks 12a and 12b connected by a back 12c and housing the ribs 13.
- the shell 12 thus has between the ends 12e of the cheeks lateral, an opening towards the window to be wiped and which, according to the invention, is closed by the plate 14.
- the arm in one piece, the shell and the sole being preloaded with fibers according to the percentages announced or selectively loaded during molding.
- the sole can be made with a variable thickness or a convex curvature from one end to the other of the arm, the geometry of the ribs then adapting to the geometry of the sole.
- the ribs may have come from molding with the sole and / or the shell, the assembly between the ribs, the shell and the sole being carried out by the means already mentioned.
- the shell can incorporate the sole, the assembly being carried out on the internal faces of the cheeks of the shell and not on the ends of the shell.
- the shell may have in cross section symmetrical, rectangle, trapezoid, etc., or asymmetrical polygonal shapes, and having rounded vertices.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99946231A EP1115596A1 (fr) | 1998-09-24 | 1999-09-24 | Piece de transmission, notamment bras d'essuie-glace, en materiau plastique a charges differenciees |
| JP2000573950A JP2002526320A (ja) | 1998-09-24 | 1999-09-24 | 異なる充填材を含むプラスチック材料で形成された伝動部材、特にワイパーアーム |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR98/11917 | 1998-09-24 | ||
| FR9811917A FR2783784B1 (fr) | 1998-09-24 | 1998-09-24 | Piece de transmission, notamment bras d'essuie-glace, en materiau plastique a charges differenciees |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000017022A1 true WO2000017022A1 (fr) | 2000-03-30 |
Family
ID=9530781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1999/002280 Ceased WO2000017022A1 (fr) | 1998-09-24 | 1999-09-24 | Piece de transmission, notamment bras d'essuie-glace, en materiau plastique a charges differenciees |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1115596A1 (fr) |
| JP (1) | JP2002526320A (fr) |
| FR (1) | FR2783784B1 (fr) |
| WO (1) | WO2000017022A1 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6704613B2 (en) | 2000-05-17 | 2004-03-09 | Gines Sanchez Gomez | Optimized automatic warehouse |
| CN107000694A (zh) * | 2014-12-18 | 2017-08-01 | 罗伯特·博世有限公司 | 玻璃板刮水装置 |
| US20240391426A1 (en) * | 2023-05-23 | 2024-11-28 | Rosemount Aerospace Inc. | Composite wiper arms |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3126376A1 (fr) * | 2021-08-31 | 2023-03-03 | Valeo Systèmes D’Essuyage | Bras monobloc de système d’essuyage comprenant plusieurs poutres longitudinales |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2319062A1 (de) * | 1973-04-14 | 1974-10-31 | Rau Swf Autozubehoer | Wischerarm fuer scheibenwischer in fahrzeugen, insbesondere kraftfahrzeugen |
| GB2021939A (en) | 1978-06-03 | 1979-12-12 | Rau Swf Autozubehoer | Windscreen wiper arm |
| DE2839587A1 (de) | 1978-09-12 | 1980-03-20 | Rau Swf Autozubehoer | Wischblatt, insbesondere fue scheibenreinigungsanlagen in kraftfahrzeugen |
| FR2557052A1 (fr) | 1983-12-22 | 1985-06-28 | Swf Auto Electric Gmbh | Bras d'essuie-glace pour vehicule automobile |
| EP0525850A1 (fr) * | 1991-07-29 | 1993-02-03 | General Motors Corporation | Bras d'essuie glaces saillant en matériau composite moulé |
| EP0729869A1 (fr) * | 1995-02-28 | 1996-09-04 | Valeo Systemes D'essuyage | Essuie-glace pour véhicule automobile comportant un bras en matière plastique rigide et léger |
-
1998
- 1998-09-24 FR FR9811917A patent/FR2783784B1/fr not_active Expired - Fee Related
-
1999
- 1999-09-24 WO PCT/FR1999/002280 patent/WO2000017022A1/fr not_active Ceased
- 1999-09-24 JP JP2000573950A patent/JP2002526320A/ja active Pending
- 1999-09-24 EP EP99946231A patent/EP1115596A1/fr not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2319062A1 (de) * | 1973-04-14 | 1974-10-31 | Rau Swf Autozubehoer | Wischerarm fuer scheibenwischer in fahrzeugen, insbesondere kraftfahrzeugen |
| GB2021939A (en) | 1978-06-03 | 1979-12-12 | Rau Swf Autozubehoer | Windscreen wiper arm |
| DE2839587A1 (de) | 1978-09-12 | 1980-03-20 | Rau Swf Autozubehoer | Wischblatt, insbesondere fue scheibenreinigungsanlagen in kraftfahrzeugen |
| FR2557052A1 (fr) | 1983-12-22 | 1985-06-28 | Swf Auto Electric Gmbh | Bras d'essuie-glace pour vehicule automobile |
| GB2151465A (en) * | 1983-12-22 | 1985-07-24 | Swf Auto Electric Gmbh | Wiper arm |
| EP0525850A1 (fr) * | 1991-07-29 | 1993-02-03 | General Motors Corporation | Bras d'essuie glaces saillant en matériau composite moulé |
| EP0729869A1 (fr) * | 1995-02-28 | 1996-09-04 | Valeo Systemes D'essuyage | Essuie-glace pour véhicule automobile comportant un bras en matière plastique rigide et léger |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6704613B2 (en) | 2000-05-17 | 2004-03-09 | Gines Sanchez Gomez | Optimized automatic warehouse |
| CN107000694A (zh) * | 2014-12-18 | 2017-08-01 | 罗伯特·博世有限公司 | 玻璃板刮水装置 |
| CN107000694B (zh) * | 2014-12-18 | 2020-01-07 | 罗伯特·博世有限公司 | 玻璃板刮水装置 |
| US20240391426A1 (en) * | 2023-05-23 | 2024-11-28 | Rosemount Aerospace Inc. | Composite wiper arms |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1115596A1 (fr) | 2001-07-18 |
| JP2002526320A (ja) | 2002-08-20 |
| FR2783784A1 (fr) | 2000-03-31 |
| FR2783784B1 (fr) | 2000-12-01 |
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