公开(公告)号：US10131038B2

公开(公告)日：2018-11-20

申请号：US15185088

申请日：2016-06-17

Applicant: YIH CHENG FACTORY CO., LTD.

Inventor： Chih-Hung Chien

IPC: B25B23/00 ,  B25B13/46 ,  B25B13/48 ,  B25G1/06

Abstract: A ratchet wrench having a flexible positioning structure includes a drive bar, a rotary head, and a locking button. The drive bar includes a fork arm, an axial hole, and a radial hole communicating with the axial hole. The rotary head is pivotally connected to the fork arm; the rotary head includes a round housing, a plurality of positioning recesses disposed on the round housing, and a pivot axis passing through the rotary head and two ends of the fork arm. The pivot axis is perpendicular to the radial hole. The locking button includes a flexible fastener inserted through the radial hole and a latch bar disposed in the axial hole. The flexible fastener is flexibly movable in association with movement of the latch bar, so that the latch bar is engaged with or released from any of the positioning recesses.

公开(公告)号：US10717174B2

公开(公告)日：2020-07-21

申请号：US15691497

申请日：2017-08-30

Applicant: YIH CHENG FACTORY CO., LTD.

Inventor： Chih-Hung Chien

IPC: B25B23/00 ,  B25B13/46 ,  B25G1/06 ,  B25G3/04

Abstract: A ratchet wrench capable of rotating quickly and driving rotation includes a handle, a rotary head, a positioning mechanism, and a sleeve. The handle includes an arm and a bar body. The bar body includes an accommodating slot; the arm includes a through hole. The rotary head is connected to the arm and includes recess portions. The positioning mechanism includes a positioning element, a resilient body, and a block element. The resilient body receives the positioning element and is received in the through hole, the positioning element is correspondingly disposed in any of the recess portions, and the block element is connected to the positioning element. The sleeve receives the bar body and operably drives the block element to slide in the accommodating slot, so that the positioning element is positioned and selectively engaged with any recess portion.

公开(公告)号：US10245712B2

公开(公告)日：2019-04-02

申请号：US15185101

申请日：2016-06-17

Applicant: YIH CHENG FACTORY CO., LTD.

Inventor： Chih-Hung Chien

IPC: B25B23/00 ,  B25B13/46 ,  B25B13/48

Abstract: A ratchet wrench having a quick release structure includes a drive bar, a rotary head, and a locking switch. The drive bar includes a fork arm, a fork opening formed at the fork arm, an axial hole communicating with the fork opening, and a radial hole communicating with the axial hole. The rotary head is pivotally connected to two ends of the fork arm. The rotary head includes a round housing, a plurality of positioning recesses disposed on the round housing, and a pivot axis passing through the rotary head. The pivot axis is perpendicular to the radial hole. The locking switch includes a turning element disposed in the radial hole and a latch element disposed in the axial hole. The turning element rotatably drives the latch element to move axially, and the latch element is engaged with or released from any positioning recess.

公开(公告)号：US09808917B1

公开(公告)日：2017-11-07

申请号：US15256557

申请日：2016-09-03

Applicant: YIH CHENG FACTORY CO., LTD.

Inventor： Chih-Hung Chien

IPC: B25B23/00 ,  B25B13/46 ,  B25G1/06

CPC classification number: B25B23/0028 ,  B25B13/461 ,  B25B13/465 ,  B25G1/063 ,  B25G1/066 ,  B25G3/04

Abstract: A ratchet wrench capable of rotating quickly and driving rotation includes a handle, a rotary head, a positioning mechanism, and a sleeve. The handle includes an arm and a bar body. The bar body includes an accommodating slot; the arm includes a through hole. The rotary head is connected to the arm and includes recess portions. The positioning mechanism includes a positioning element, a resilient body, and a block element. The resilient body receives the positioning element and is received in the through hole, the positioning element is correspondingly disposed in any of the recess portions, and the block element is connected to the positioning element. The sleeve receives the bar body and operably drives the block element to slide in the accommodating slot, so that the positioning element is positioned and selectively engaged with any recess portion.