Drum brake

Drum brake

  • CN 101,029,666 A
  • Filed: 02/14/2007
  • Published: 09/05/2007
  • Est. Priority Date: 02/27/2006
  • Status: Active Application
First Claim
Patent Images

1. drum brake, it comprises:

  • Backboard;

    Slidably be supported on the brake shoe on the backboard;

    Return spring, the position at the center on the width direction that departs from brake shoe drum edge part wherein, the elastic force of this return spring along away from backboard to the directive effect of upside on brake shoe;

    The first shoulder part, it is formed at the upper surface of backboard, wherein the bulging edge of brake shoe partly be positioned on wheel master cylinder one side with anchor one side on, the surface that contacts with backboard partly contacts with this first shoulder and partly supported by this first shoulder;

    AndThe second shoulder part, it is formed at the lower surface of the incision raised portion of backboard, and wherein the bulging edge of brake shoe part roughly is formed at surface middle position, that contact with backboard and partly contacts with this second shoulder and partly supported by this second shoulder.

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