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CN-224223769-U - Top impact electric wrench

CN224223769UCN 224223769 UCN224223769 UCN 224223769UCN-224223769-U

Abstract

The utility model discloses a top impact electric wrench capable of realizing outward translation of a shaft axis of a working part. The shell comprises a holding part and an installation part, the holding part is used for being held by an operator, and the power output part and the output offset part are respectively installed on the installation part. The power output part is provided with an impact shaft, the impact shaft is rotatably arranged on the shell, and the power output part can drive the impact shaft to rotate. The driving gear is sleeved and connected with the impact shaft and rotates along with the rotation of the impact shaft, the driven gear shaft is rotatably arranged on the shell, the driven gear is sleeved and connected with the driven gear shaft and synchronously rotates with the driven gear shaft, and the driving gear is in meshed transmission connection with the driven gear. One end of the driven gear shaft extends out of the shell and is connected with the connecting piece outside the shell, the connecting piece is used for being detachably connected with the external rotating piece, and the driven gear shaft drives the external rotating piece to rotate through the connecting piece when rotating.

Inventors

  • ZHANG TING

Assignees

  • 上海虎啸电动工具有限公司

Dates

Publication Date
20260512
Application Date
20250423

Claims (8)

  1. 1. The top impact electric wrench is characterized by comprising a shell, a power output part and an output offset part; the housing comprises a holding part and a mounting part, wherein the holding part is used for holding by an operator, and the power output part and the output offset part are respectively mounted on the mounting part; The power output part is provided with an impact shaft, the impact shaft is rotatably arranged on the shell, and the power output part can drive the impact shaft to rotate; The driving gear is sleeved and connected with the impact shaft and rotates along with the rotation of the impact shaft, the driven gear shaft is rotatably arranged on the shell, the driven gear is sleeved and connected with the driven gear shaft and synchronously rotates with the driven gear shaft, and the driving gear is meshed and in transmission connection with the driven gear; one end of the driven gear shaft extends out of the shell and is connected with the connecting piece outside the shell, the connecting piece is used for being detachably connected with the external rotating piece, and the driven gear shaft drives the external rotating piece to rotate through the connecting piece when rotating.
  2. 2. The top impact electric wrench of claim 1, wherein the axis of rotation of the impact shaft is parallel to the axis of rotation of the passive gear shaft.
  3. 3. The top impact electric wrench of claim 1, wherein the end of the driven gear shaft connected with the connecting piece is an output end of the driven gear shaft; The connecting piece is provided with a mounting hole, the output end of the driven gear shaft extends into the mounting hole, and a radial rotation limiting structure is arranged between the mounting hole and the output end of the driven gear shaft so that the driven gear shaft drives the connecting piece to rotate when rotating.
  4. 4. The top-drive electric wrench according to claim 3, wherein the radial rotation limiting structure is that the shape of the mounting hole is matched with the shape of the output end of the driven gear shaft, the cross section of the output end of the driven gear shaft is non-circular, and when the driven gear shaft rotates, the outer side wall of the output end pushes the inner side wall of the corresponding position of the mounting hole to drive the connecting piece provided with the mounting hole to rotate.
  5. 5. The top impact electric wrench of claim 3, wherein the output offset portion further comprises a drop-proof pin and an elastic limit ring; The anti-falling pin penetrates into the connecting piece from the annular groove at one circumferential side of the connecting piece and penetrates through the driven gear shaft and then penetrates out from the annular groove at the other circumferential side of the connecting piece.
  6. 6. The top impact electric wrench of claim 5, wherein the elastic limit ring is a rubber ring.
  7. 7. The top impact electric wrench according to claim 1, wherein one end of the connecting piece is connected with the driven gear shaft, the other end of the connecting piece is provided with a connecting hole, an axis of the connecting hole coincides with an axis of the driven gear shaft, the axis of the connecting hole is non-circular, and the connecting hole is used for being sleeved with an external rotating piece to drive the external rotating piece to rotate when the connecting piece rotates.
  8. 8. The top impact electric wrench of claim 1, wherein the power output portion includes a series motor, a speed reduction mechanism and an impact mechanism, an output end of the series motor is connected with an input end of the speed reduction mechanism, an output end of the speed reduction mechanism is connected with an input end of the impact mechanism, and an output end of the impact mechanism is the impact shaft.

Description

Top impact electric wrench Technical Field The utility model belongs to the technical field of hand-held electric impact wrenches, and particularly relates to a top impact electric wrench. Background The electric impact wrench can efficiently and rapidly tighten or loosen the parts ‌ fastened by rotation, such as bolts and screws. The torque is transmitted to the threaded standard parts (namely bolts, screws and the like) through the internal impact mechanism, and the transmission mode has small reaction torque to the hands and is simple and convenient to operate. However, in the existing electric impact wrench, the socket (i.e., the part connected with the screw standard) is disposed on a straight line with the impact mechanism, the motor, etc., so that the housing of the electric impact wrench protrudes from the socket in the radial direction by a large amount, making the use of the electric impact wrench limited. Disclosure of utility model In view of the above problems, the present utility model provides a top impact electric wrench, including a housing, a power output portion, and an output offset portion; the housing comprises a holding part and a mounting part, wherein the holding part is used for holding by an operator, and the power output part and the output offset part are respectively mounted on the mounting part; The power output part is provided with an impact shaft, the impact shaft is rotatably arranged on the shell, and the power output part can drive the impact shaft to rotate; The driving gear is sleeved and connected with the impact shaft and rotates along with the rotation of the impact shaft, the driven gear shaft is rotatably arranged on the shell, the driven gear is sleeved and connected with the driven gear shaft and synchronously rotates with the driven gear shaft, and the driving gear is meshed and in transmission connection with the driven gear; one end of the driven gear shaft extends out of the shell and is connected with the connecting piece outside the shell, the connecting piece is used for being detachably connected with the external rotating piece, and the driven gear shaft drives the external rotating piece to rotate through the connecting piece when rotating. Optionally, the rotation axis of the impact shaft is parallel to the rotation axis of the driven gear shaft. Optionally, one end of the driven gear shaft connected with the connecting piece is an output end of the driven gear shaft; The connecting piece is provided with a mounting hole, the output end of the driven gear shaft extends into the mounting hole, and a radial rotation limiting structure is arranged between the mounting hole and the output end of the driven gear shaft so that the driven gear shaft drives the connecting piece to rotate when rotating. Optionally, the radial rotation limiting structure is that the shape of the mounting hole is matched with the shape of the output end of the driven gear shaft, the cross section of the output end of the driven gear shaft is non-circular, and when the driven gear shaft rotates, the outer side wall of the output end pushes the inner side wall of the corresponding position of the mounting hole to drive the connecting piece provided with the mounting hole to rotate. Optionally, the output offset part further comprises a falling-preventing pin and an elastic limiting ring; The anti-falling pin penetrates into the connecting piece from the annular groove at one circumferential side of the connecting piece and penetrates through the driven gear shaft and then penetrates out from the annular groove at the other circumferential side of the connecting piece. Optionally, the elastic limiting ring is a rubber ring. Optionally, one end of the connecting piece with passive gear axle is connected, and the other end is equipped with the connecting hole, the axis of connecting hole with the axis coincidence of passive gear axle, the axis of connecting hole is non-circular, the connecting hole is used for establishing the connection with outside rotating member cover so that the drive outside rotating member rotates when the connecting piece rotates. Optionally, the power output part includes series excited motor, reduction gears and impact mechanism, series excited motor's output with reduction gears's input is connected, reduction gears's output with impact mechanism's input is connected, impact mechanism's output is the impact axle. By adopting the technical scheme, the utility model has the following advantages and positive effects compared with the prior art: according to the jacking electric wrench provided by the utility model, the impact shaft and the driven gear shaft are in meshed transmission through the driving gear and the driven gear, and the connecting piece used for being connected with the external rotating piece is arranged on the driven gear shaft, so that the aim of outwards translating the axial lead of the working part (namely the rotating axis when the con