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an electric hammer

A technology of electric hammer and motor gear, which is applied in the direction of impact tools, light impact tools, manufacturing tools, etc. It can solve the problems of labor-saving, laborious, low energy conversion efficiency of electric hammer, etc., and achieve the effect of increased machine efficiency and simple operation

Inactive Publication Date: 2016-04-20
NINGBO GEMAY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy conversion efficiency of the existing electric hammer is low, the noise and vibration are large during operation, and people need more force to hold the electric hammer, which is labor-intensive and labor-intensive.

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0026] see figure 1 , an electric hammer, comprising a motor 23, a motor gear 24 tightly matched with the motor 23, a gear 26 and a gear 21 meshing with the motor gear 24 simultaneously, and the motor gear 24 can simultaneously drive the gear 26 and the gear 21 to rotate. It also includes an intermediate cover 25, two bearings 22 correspondingly connected with the gear 26 and the gear 21, a rotating shaft 28 connected with the gear 26 through a one-way clutch, a retaining ring 27 and a ball bearing 20 arranged between the gear 26 and the rotating shaft 28, Described one-way clutch is made up of needle roller 29 and spring 30 that are installed in the rotating shaft 28, and the end of rotating shaft 28 is socketed pinion 31, and gear 26 drives rotating shaft 28 and the pinion 31 that is fixed on the rotating shaft 28 to rotate together. The gear 21 is parallel to the gear 26 , and the gear 21 is connected to the bevel gear shaft 19 through another ball bearing 20 .

[0027] se...

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PUM

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Abstract

The invention discloses an electric hammer, which comprises a motor and two gears. The two gears are simultaneously connected with the motor in a meshed manner by a gear of the motor, the first gear is connected with a rotary shaft by a one-way clutch, and the one-way clutch consists of a needle roller and a spring and is mounted in the rotary shaft. When the motor outputs power for clockwise rotation, the first gear can drive the rotary shaft and a first component fixed onto the rotary shaft to rotate via the one-way clutch, and the rotary shaft is further connected with an impact disc mechanism in a meshed manner via a gear. When the motor outputs power for anticlockwise rotation, the first gear rotates idly, and the rotary shaft does not move. The second gear is connected with a bevel gear shaft, a bevel gear is further connected with an output shaft, an impact finger is assembled in the output shaft and can freely rotate and move in the output shaft, the tail end of the impact finger is a knocking position of an impact disc, and the front end of the impact finger is a knocking position of a drill. The electric hammer is low in noise and vibration and high in energy conversion efficiency.

Description

technical field [0001] The invention relates to electric tools, in particular to an electric hammer. Background technique [0002] The electric hammer is an electric rotary hammer drill with a safety clutch attached to a pneumatic hammer mechanism. It is mainly used for drilling on concrete, floors, brick walls and stones. The electric hammer is actually based on the electric drill, adding a piston with a crankshaft connecting rod driven by an electric motor, compressing the air back and forth in the cylinder, so that the air pressure in the cylinder changes periodically, and the changing air pressure drives the hammer in the cylinder Strike the top of the drill back and forth. However, the energy conversion efficiency of the existing electric hammer is low, and the noise and vibration are large during operation. People need more force to hold the electric hammer, which is labor-intensive and labor-intensive. Contents of the invention [0003] In order to overcome the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25D16/00B25D17/00
Inventor 童丽君
Owner NINGBO GEMAY IND