The impact mechanism in the impact drill

Abstract

The invention discloses an impact mechanism in an electric impact drill. The impact mechanism comprises a fixed impact block arranged on the outer side of a spindle in a clearance sleeving manner. The part, in front of the fixed impact block, of the spindle is fixedly sleeved with a movable impact block. Fluctuation tooth patterns are arranged on the two opposite end faces of the fixed impact block and the movable impact block. The outer side of the part, in front of the movable impact block, of the spindle is further sleeved with an impact guiding block in a clearance manner. The outer side of the part, in front of the impact guiding block, of the spindle is sleeved with an impact adjusting block in a clearance manner. At least one limiting notch is formed in the front end face of the impact guiding block. Limiting bosses corresponding to the limiting notches in a one-to-one manner are arranged on the rear end face of the impact adjusting block. The outer side of the part, between the impact adjusting block and a gear case, of the spindle is sleeved with a return spring in a clearance manner. A shell is further provided with a torsion cup capable of being arranged on the outer side of the front end of the gear case in a sleeving manner. The impact adjusting block is arranged in the torsion cup, and the torsion cup can drive the impact adjusting block to rotate. The above impact mechanism is simpler in structure, and accordingly the gear shifting operation of the impact adjusting block is more convenient.

Description

technical field [0001] The invention relates to an impact electric drill, in particular to an impact mechanism in the impact electric drill. Background technique [0002] Electric drills with the functions of "drill" and "impact drill" are usually called impact drills. The "impact drill" function means that the drill bit can impact the drilled hole while rotating the drill hole. The impact electric drill mainly includes: a housing, a main shaft disposed in the housing, a power unit disposed in the housing, a rotational power transmission device that can transmit the rotational power of the power unit to the main shaft, and can use the rotational power to make the main shaft produce an axial force. Shock mechanism for shocks. When drilling is required, the drilling work can be carried out by installing a drill bit on the output end of the main shaft. The power unit mainly includes: a motor arranged in the housing, and a motor gear installed on the output shaft of the motor....

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the impact mechanism in the above-mentioned impact electric drill are: 1. The installation of the return torsion spring is relatively difficult, which will greatly affect the assembly efficiency of the impact electric drill; The shifting operation is cumbersome and makes the structure of the impact mechanism more complicated

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