Apparatus and method for shear valve in power tool

By combining the shear valve and unloading valve into a single component and using a one-way clutch to control the valve body rotation, the problems of component complexity and weight in hydraulic tools are solved, resulting in a lighter, smaller, and more economical tool design.

CN122401327APending Publication Date: 2026-07-17MILWAUKEE ELECTRIC TOOL CORP
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Patent Information

Application Number
CN202610053766.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2025-01-15
Filing Date
2026-01-15
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing hydraulic power tools, shearing valves and unloading valves are usually separate components, resulting in complex tool design, heavy weight, large size and high cost.

Method used

The functions of the shear valve and the unloading valve are combined into a single component, which is connected to the drive shaft of the hydraulic pump using a one-way clutch. The rotation of the valve body is controlled by the rotation direction of the one-way clutch, thereby realizing the generation and release of hydraulic pressure.

Benefits of technology

It simplifies the design of hydraulic tools, reduces the number of parts, lowers weight and size, reduces costs, and provides flexible hydraulic control.

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Abstract

一种液压工具，所述液压工具包括具有密封表面、侧表面和第一流体通道的阀体，以流体地联接密封表面和侧表面。阀体在第一位置和第二位置之间旋转。剪切密封件接触密封表面，剪切密封件包括第二流体通道，以在阀体处于第一位置时，第二流体通道选择性地流体地联接到第一流体通道，并且在阀体处于第二位置时，第二流体通道选择性地与密封表面流体密封。输入轴经由单向轴承联接到阀体。单向轴承在输入轴沿第一方向旋转时使输入轴与阀体可旋转地联接，并且在输入轴沿相反的第二方向旋转时使输入轴与阀体可旋转地断开联接。
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