UN R26 (external projections) Comments to document GRSG/2019 ...
Informal document GRSG-117-26 117th GRSG, 811 October 2019 Agenda item 3 UN R26 (external projections) Comments to document GRSG/2019/11 Current production radius analysis 1. The following slides show existing wiper designs (not exhaustive) of different OEMs that are not able to meet the proposed amendment (see next slide) by France 2. The table below shows the affected number of vehicles on an annual basis if the proposed amendment would be introduced as an amendment to UN R26 Company example vehicles affected annually
(million) A Design A 0.71 B Design B 2.76 C Design C
0.70 D Design D 0.70 E Design E 1.80 F Design F
2.50 G Design G1,2,3 2.30 H Design H1, H2 4.00 I Similar to Design E
0.60 Total 16.07 I. Proposal (France) ECE/TRANS/WP.29/GRSG/2019/11 Paragraphs 6.4. to 6.4.2., amend to read: "6.4. Windscreen wipers 6.4.1. The windscreen wiper fittings shall be such that the wiper shaft (number 1 in Figure 0) is furnished with a protective casing (number 1.1 in Figure 0) which has a radius of curvature meeting the requirements of paragraph 5.4. above and an end surface area of not less than 150 mm. The holder (head, main and/or other parts, i.e. numbers 2, 2.1 and 2.2 in Figure 0) are designed with a radius of curvature meeting the requirements of paragraph 5.4. above. In the case of rounded covers, these shall have a minimum projected area of 150 mm when measured not more than 6.5 mm from
the point projecting furthest. These requirements shall also be met by rear window wipers and headlamp wipers. 6.4.2. Paragraph 5.4. shall not apply to the wiper blades (number 4 in Figure 0), or to any to supporting members (number 3, 2.2, 2.1 in Figure 0) or to the functional hinge between the holder head and the holder (number 5 in figure 0). However, these units shall be so made as to have no sharp angles or pointed or cutting parts. Figure 0 Example of parts distribution 1. 1 Wiper shaft 1.1 Protective casing 2 Holder head 2.1 Main holder 2.2 Second holder 3 Supporting members 4 Wiper blades 5 functional hinge"
2. 3. 5 Red text is added to the French proposal by OICA as to overcome the problems with current wiper designs The examples in the next slides show that part 2.1, part 2.2 and the functional hinge of current wiper designs do not meet the requirement of par. 5.4 Red text is added to the drawing by OICA to clarify the hinge location. Design A design B
design C design D design E design F Part 2.1 Functional hinge D D R2.1 R4 R1.7 R2.1
DD Front wiper arm assy Second holder design G1 A B Functional hinge B A
Main holder Holder head Curvature of second holder less than R2.5mm SEC A-A Edge of main holder less than R2.5mm SEC B-B Rear wiper arm assy #1 design G2 Protective casing
A A Main holder Curvature of main holder less than R2.5mm SEC A-A Rear wiper arm assy #2 Protective casing design G3 Second holder
Main holder A A C B B Curvature of second holder less than R2.5mm SEC A-A Functional hinge
C Edge of main holder less than R2.5mm SEC B-B Curvature of main holder less than R2.5mm SEC C-C design H1 Cutting areas Less than R2,5 design H2
Wiper arm with embedded washing Hose clips Less than R2,5 on sides (cutting parts) Nozzle Less than R2,5 on sides
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