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What is the name of the following symbol (in red) :

enter image description here

This is from the front wiper motor schematic of a Toyota Corolla car. First time I have seen this. I searched a little bit on various websites but couldn't find the meaning.

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  • 1
    It may be part of the self-parking circuit. When the wipers are switched off the motor should run until in the park position. These are generally a curved segment and brush in the gearbox. It's not clear though without the rest of the circuit. As show it would seem to cut the common return from the 2-speed motor on every cycle with no way to restart it. Does the elliptical symbol on the other switch represent a cam?
    – Transistor
    Aug 22 '18 at 14:06
  • AFAIK park mode is implemented using the 3 way switch. It connect +S wire to either ground (E wire) or positive terminal (B wire). The switch is in reality a rotating disk (it is connected to a gear that rotate along with motor). On the schema it is shown as a cam but it does the same thing. I think +2/+1 is for fast/slow mode. You can view more in the video I posted in Marcus answer.
    – tigrou
    Aug 22 '18 at 14:48
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    My guess is a bimetallic strip to shut off the motor if it starts to overheat.
    – The Photon
    Aug 22 '18 at 14:52
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    It's a cheshire cat
    – laptop2d
    Aug 22 '18 at 15:05
  • Its a cooking WOK.
    – Moab
    Aug 23 '18 at 16:46
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I don't think it's a standardized symbol.

I'd assume that it's a sickle-shaped contacting thing connected mechanically to the wiper.

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  • I was going to guess "mechanical slider"... maybe it changes resistance(?). Try searching "ANSI electrical symbols" or "IEEE Standard 315" and see if anything shows up.
    – CapnJJ
    Aug 22 '18 at 14:01
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    There is a disassembly of similar motor here : youtu.be/Pa4jv8FvjAQ. At 5:37 is the schematic, with similar symbol. The only contacting part I can see is the rotating disk with the 3 pins and the motor brushes.
    – tigrou
    Aug 22 '18 at 14:04
  • I agree with @tigrou. Not sure how the toothbrush fits in though... maybe that is his brother's too. Maybe you could message him on youtube... He seems to be a wiper motor expert. Who knew there were any?
    – CapnJJ
    Aug 22 '18 at 14:28

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