Motor-pump assembly

Motor-pump assembly

  • CN 102,257,274 B
  • Filed: 12/15/2009
  • Issued: 05/13/2015
  • Est. Priority Date: 12/19/2008
  • Status: Active Grant
First Claim
Patent Images

1. an electric-motor pump group (1), this electric-motor pump group is used for providing pressure for the braking executive device of automobile braking system, described electric-motor pump group (1) comprises pump (2) and drives the motor (3) of described pump (2), wherein pump (2) is designed to have the two diaphragm pump of two mutually opposing working diaphragms (4), described working diaphragm (4) is clamped in respectively between pump case (5) and active chamber lid (6) and also defines active chamber (7) thus, described working diaphragm (4) can move by having the crank-drive mechanism (8) of eccentric body (9) and connecting rod (10), described active chamber (7) is respectively arranged with the gas-entered passageway with suction valve and the exhaust passage with outlet valve, described exhaust passage is designed to be arranged in active chamber lid (6) and pump case (5), the air of discharging from active chamber (7) is made to be guided to the inner chamber (22) of the encirclement crank-drive mechanism of pump case (5), be provided with the exhaust unit (13) that air can be made by making air diverts to discharge from inner chamber (22) in the mode of low noise, it is characterized in that, each eccentric body (9) has the counterweight (25) formed on described eccentric body (9), the described eccentric body (9) with counterweight (25) is designed to sintered component, described connecting rod (10) comprises the tie rod holes (26) for accommodating bearing, described tie rod holes (26) is designed to sintered component, and described connecting rod (10) comprises the connection rod handle (27) be made of plastics.

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