Roller pin type electric hammer clutch

By setting the needle roller and slot on the clutch of the electric hammer clutch, the slipping problem caused by excessive torque during startup is solved, stable and safe rotation is achieved, and the user is effectively protected when the drill bit is stuck.

CN222680844UActive Publication Date: 2025-03-28YONGKANG INGHAN ELECTRIC TECH CO LTD
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Patent Information

Application Number
CN202420797247.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-16
Publication Date
2025-03-28
Estimated Expiration
2034-04-16

AI Technical Summary

Technical Problem

The existing electric hammer clutch is likely to cause slippage when the torque is too high during starting, resulting in failure to work normally, and there are safety hazards.

Method used

A needle roller type electric hammer clutch is designed, and synchronous rotation is achieved by setting multiple evenly distributed installation grooves and needle rollers on the clutch plate and setting a card slot on the gear. When the drill bit is stuck, the torque becomes larger, and the needle rolls over the booster plate and leaves the chuck slot, causing the clutch plate to disengage from the gear, realizing the clutch function.

Benefits of technology

Improves the stability and safety of the clutch, avoids slippage, ensures normal operation, and effectively protects the user when the drill bit is stuck.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model provides a roller pin type electric hammer clutch. The electric hammer solves the problems that when the torque is too large when an existing electric hammer is started, a transmission ball has a certain movement range on a groove, the slipping situation is easily caused, and the electric hammer cannot work. The end face, facing the clutch plate, of the gear is provided with the clamping groove used for installing the roller pin, the depth of the clamping groove is smaller than the radius of the roller pin, the roller pin is movably arranged on the clutch plate, and when the transmission shaft rotates, the clutch plate is driven to rotate synchronously. The roller pin is not prone to being separated from the clamping groove and good in stability during normal use, when a drill bit is clamped, torque suddenly increases, the roller pin jacks the pressure plate towards the direction of the pressing plate and is separated from the clamping groove to enable the clutch plate to be separated from the gear, and the clutch function is achieved. And at the moment, the clutch plate and the transmission shaft idle to protect the user.
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