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Electronic water pump for vehicles and its impeller rotor assembly

A technology of electronic water pumps and components, which is applied to pump components, parts of pumping devices used for elastic fluids, and magnetic circuit rotating parts, etc. It can solve the problems of complex worm support structure, difficult processing, and complicated processing. Achieve the effects of easy integrated molding, low cost of injection molding materials, and simple sealing structure

Active Publication Date: 2016-09-21
常州市东南电器电机有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The worm wheel of the electronic water pump is inside the rotor, which is complex and difficult to process; in addition, the worm gear constituting the rotor has a complex and easy-to-wear structure

Method used

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  • Electronic water pump for vehicles and its impeller rotor assembly
  • Electronic water pump for vehicles and its impeller rotor assembly
  • Electronic water pump for vehicles and its impeller rotor assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] See Figure 4 to Figure 6 The electronic water pump for vehicles in this embodiment includes a front cover assembly 100 , an impeller rotor assembly, a rotor shaft 5 , a plastic-sealed stator assembly 6 , a motor plastic casing 7 , a sealing ring, a drive circuit board assembly 8 and a rear cover assembly 9 .

[0040] The plastic-encapsulated stator assembly 6 is completely sealed, and the plastic-enclosed stator assembly 6 is directly injected into the main body of the motor after winding the stator assembly. The stator assembly adopts an upper and lower skeleton structure, which is convenient for winding, and at the same time, it is easy for the motor stator to be integrally formed. After the rotor shaft 5 is pressed into the shaft seat 54 , it is injected together with the plastic-sealed stator assembly 6 .

[0041] The plastic-encapsulated stator assembly 6 and the drive circuit board assembly 8 are fixed in the inner cavity of the motor plastic-encapsulated housin...

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Abstract

The invention discloses an electronic water pump for a vehicle and an impeller rotor assembly thereof. The impeller rotor assembly comprises an impeller and a rotor assembly, wherein the impeller comprises a main disc body, blades, an impeller shaft, a first limit plate and a second limit plate, and a rotor shaft hole is formed in the center of the impeller shaft; the depth of the rotor shaft hole is between 28mm and 32mm. The rotor assembly comprises a rotor iron core, a magnetic shoe and a plastic seal casing, and the magnetic shoe is arranged in the rotor iron core; the rotor iron core with the magnetic shoe is sealed by plastic inside the plastic seal casing, and the second limit plate of the impeller is propped against the front end surface of the inside of the plastic seal casing; the front end surface of the plastic seal casing is propped against the first limit plate of the impeller. The impeller rotor assembly is molded by a two-step injection process that the rotor assembly is firstly molded by injection, then the rotor is molded by injection to obtain the impeller rotor assembly, and the impeller rotor assembly is connected with the rotor shaft without a bearing; the rotor shaft hole with a length of between 28mm and 32mm of the impeller is matched with the rotor shaft, so that the rotor runs stably, and can not eccentrically shake.

Description

technical field [0001] The invention relates to an electronic water pump, in particular to an electronic water pump for a vehicle, an impeller rotor assembly thereof, and a preparation method of the impeller rotor assembly. Background technique [0002] At present, the existing electronic water pump for vehicles adopts that the shaft end of the motor is directly connected to the blades or drives the blades through a magnetic coupling. The dynamic seal of the former shaft is prone to failure, it is difficult to achieve effective sealing, and the pump life is short. Although the latter solves the sealing problem, the efficiency is reduced due to the transmission through the magnetic coupling. At the same time, the magnetic coupling increases the production cost and makes the production and assembly difficult. [0003] Chinese patent document CN201448251U (application number 200920059915.4) discloses a water pump, the impeller rotor and the rotor are integrally formed, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D13/06F04D29/18F04D29/043F04D29/40F04D29/08H02K1/22B29C45/14
Inventor 蔡文新姜震旦
Owner 常州市东南电器电机有限公司
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