US 12,076,840 B2
Power tool for reversing and holding with single hand
Fu-Hsiang Chung, Taichung (TW); Wei-Ting Chen, Taichung (TW); Zong Hua Li, Taichung (TW); and Kai Chien Yang, Taichung (TW)
Assigned to TECHWAY INDUSTRIAL CO., LTD., Taichung (TW)
Filed by TECHWAY INDUSTRIAL CO., LTD., Taichung (TW)
Filed on May 27, 2022, as Appl. No. 17/826,813.
Claims priority of application No. 110120306 (TW), filed on Jun. 3, 2021; and application No. 111102081 (TW), filed on Jan. 18, 2022.
Prior Publication US 2022/0388131 A1, Dec. 8, 2022
Int. Cl. B25B 13/46 (2006.01); B25B 21/00 (2006.01)
CPC B25B 21/004 (2013.01) 5 Claims
OG exemplary drawing
 
1. A power tool for reversing and holding with a user's single hand, comprising:
a casing provided with an accommodating space therein, a grip part being disposed at a bottom of the casing; an elongated manipulation port being formed in the casing; a single-handedly holding length being disposed between a bottom of the grip part and a central position of the elongated manipulation port, the length being between 100 mm and 160 mm;
a driving device comprising a working head and a control unit; the working head being annularly provided with a ratchet on a circumference thereof; the control unit comprising a swing member, a control member and two driving members; the swing member being capable of swinging back and forth; the control member being pivotally disposed in the swing member, the two driving members being disposed on two sides of the control member respectively; the control member being capable of controlling the two driving members to be away from or close to the working head to control the working head to rotate in different directions;
a power source disposed below the driving device, the power source having an eccentric shaft, the eccentric shaft being capable of driving the swing member to swing;
a reversing assembly having a pushed reversing member slidably disposed in the elongated manipulation port; the pushed reversing member being capable of being reciprocating pushed within the elongated manipulation port to generate positional changes; and
a linkage member composed of a rod body; with one end connected with the pushed reversing member, and another end linked with the control member of the control unit; reciprocated displacement change of the pushed reversing member being capable of driving the linkage member, the linkage member being capable of driving the control member to produce a change in displacement, thereby capable of changing a rotation direction of the working head;
wherein, when a thumb of the user is located near the manipulation port, a the user's hand is maintained at a position of the grip part without changing positions;
wherein a maintenance hole is disposed on the casing, a connecting position between the linkage member and the control member is disposed in the maintenance hole, an end cover is covered on the maintenance hole; an area of the maintenance hole is larger than an area of the control member of the driving device;
wherein the end cover is provided with a circular column thereon, the control member is provided with a circular hole; when the end cover is covered on the maintenance hole, the circular column is pivotally disposed in the circular hole; a positioning part is protruded on the end cover, a positioning hole is disposed on the casing, the swing member of the driving device is pivotally disposed on the casing with a pivot shaft that corresponds to the positioning hole, the pivot shaft is recessed with a screw hole; when the end cover is disposed on the maintenance hole, the positioning part is disposed in the positioning hole, and the positioning part is screwed on the screw hole with a screw member, so that the pivot shaft is threadly fixed.