With bypass filter
By replacing the closed end cap with an outer shell in the filter, the support spring and valve seat structure are eliminated, achieving a rigid interference fit seal. This solves the problems of traditional filters having many parts, large size, and heavy weight, reducing costs and improving reliability and environmental friendliness.
CN122129334APending Publication Date: 2026-06-02SHANGHAI FLEETGUARD FILTER
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI FLEETGUARD FILTER
- Filing Date
- 2026-04-22
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Traditional filters have many parts, are large in size, heavy in weight, and complex to assemble, resulting in high design and manufacturing costs.
Method used
Design a filter with bypass, using an outer shell instead of a closed end cap, eliminating the need for a support spring, and directly embedding the filter module with filter paper adhesive to reduce the number of parts. A bypass module is set on the open end cap, eliminating the need for a valve seat structure, achieving a rigid interference fit seal, and reducing the need for an inner sealing ring.
Benefits of technology
It reduces the number of parts and assembly complexity, shortens product height and weight, lowers design and manufacturing costs, and improves reliability and environmental friendliness.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN122129334A_ABST
Abstract
This invention relates to the field of filter technology and discloses a filter with a bypass. The filter module is embedded in the closed end of the housing through filter paper adhesive, which seals the lower end of the housing, eliminating the need for a closed end cap and a support spring, and shortening the height of the housing. The glue injection cavity of the open end cap is sealed and bonded to the top of the filter module through filter paper adhesive. A flanged ring is inserted into the mating ring with a radial hard interference fit, sealing the filter medium inside and out, eliminating the need for an inner sealing ring. To ensure normal lubrication when the oil viscosity is high, a bypass module is provided on the open end cap. The guide ring of the valve plate is slidably sleeved on the mating ring. One end of the valve spring abuts against the sealing plate, and the other end is connected to the mounting part. The sealing plate selectively contacts and seals with the bypass hole to switch the opening and closing of the bypass module. While ensuring the filter function and retaining the oil bypass function, this invention reduces the number of parts, lowers assembly complexity, reduces design and manufacturing costs, and improves reliability and environmental friendliness.
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