Electronic water pump with high sealing performance
By employing a combination design of U-shaped sealing rings and shielding sleeves in the electric water pump, the problem of incomplete sealing between the pump housing and the motor housing is solved, achieving comprehensive radial and axial sealing, thus improving the reliability of the seal and the ease of installation.
CN224453111UActive Publication Date: 2026-07-03CHANGZHOU LEILI MOTOR SCI & TECH
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Patent Information
- Application Number
- CN202521288920.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-03
- Estimated Expiration
- 2035-06-23
AI Technical Summary
Technical Problem
Existing electronic water pumps cannot achieve complete radial and axial sealing in the sealing structure between the pump housing and the motor housing, and existing sealing rings are prone to failure under high pressure.
Method used
The design employs a U-shaped sealing ring combined with a shielding sleeve. The radial and axial seals are achieved through the cooperation between the bent part of the shielding sleeve and the U-shaped sealing ring, and the sealing effect is ensured by the compression structure between the motor housing and the water pump housing.
Benefits of technology
It achieves a complete seal between the pump casing and the motor casing, reducing liquid leakage and improving the reliability of the seal and the ease of installation.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses a high-sealing-performance electronic water pump which comprises a motor shell, a shielding sleeve, a water pump shell, a motor end cover, a rotor assembly and a stator assembly. A U-shaped sealing ring is arranged on the connecting end face of the motor shell and the water pump shell, the back face of the U-shaped sealing ring abuts against the end face of the water pump shell, and the shielding sleeve is provided with a positioning end face matched with the end face of an inner ring of the U-shaped sealing ring and a bent portion extending into a U-shaped groove of the U-shaped sealing ring. The bent part is provided with a positioning side face abutting against the inner side face of the U-shaped groove and a fixing end face abutting against the inner bottom face of the U-shaped groove, and the outer ring of the U-shaped sealing ring is pressed between the motor shell and the water pump shell in the radial direction. The U-shaped sealing structure is adopted between the water pump shell and the motor shell, meanwhile, the opening of the U-shaped sealing ring is back to the pump cavity, comprehensive sealing in the radial direction and the axial direction is achieved through the bending design of the shielding sleeve front cover and pressing of the motor shell and the water pump shell, it is guaranteed that liquid in the pump cavity does not leak, and installation is convenient.
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