US 2016/0236328 A1Published application

One-way wrench having a catching device with two catches and a catch holder and having differential teeth

AssigneeInfar Industrial Co., Ltd.

InventorAnder CHEN

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Abstract

A one-way wrench having a catching device with two catches and a catch holder and having differential teeth is provided and characterized in that: the catching device is disposed in a catching chamber laterally disposed beside a driving hole of the one-way wrench; the catching device has two catches, two position-restoring elements, and a catch holder; the catch holder pushes the two catches simultaneously, such that a single stable base structure pushes the two catches simultaneously; and starting ends of tooth portions of the two catches are dentate to different extents, so as to effectuate a small transmission-oriented tooth-changing angle, achieve stable control, as well as cut production and maintenance costs.

Claims5

Dependent claims

A one-way wrench having a catching device with two catches and a catch holder and having differential teeth, wherein the wrench has a body, a driving element, and a catching device, wherein the catching device has two catches, two position-restoring elements, and a catch holder, wherein an end of the body has a driving hole, wherein a catching chamber is laterally disposed beside the driving hole and is in communication with the driving hole, wherein the catching chamber is shallow at its two ends and deep at its middle;

the driving element is externally provided with ratchet teeth and internally provided with a penetrated driving hole;
the two catches have abutting ends abutting against the catching chamber, respectively;
the two catches have tooth portions corresponding in position to end surfaces of the ratchet teeth, respectively;
wherein a starting end of the tooth portion of one of the two catches looks like a trough, whereas a starting end of the tooth portion of another one of the two catches looks like a peak, wherein the tooth portion of one of the two catches is ahead of or lags behind the tooth portion of another one of the two catches by a half-tooth distance, wherein only one catch is engaged with and driven by the ratchet teeth of the driving element, wherein an end of each of the two position-restoring elements abuts against a corresponding one of the two catches, whereas another end of each of the two position-restoring elements abuts against the catch holder, wherein the catch holder has an abutting surface for abutting against the catching chamber, wherein the catch holder has an end surface corresponding in position to the catches and adapted to abut against the two position-restoring elements, wherein the other ends of the two position-restoring elements abut against the catches.

1 more element

the driving element is externally provided with ratchet teeth and internally provided with a penetrated driving hole;
the two catches have abutting ends abutting against the catching chamber, respectively;
the two catches have tooth portions corresponding in position to end surfaces of the ratchet teeth, respectively;
wherein a starting end of the tooth portion of one of the two catches looks like a trough, whereas a starting end of the tooth portion of another one of the two catches looks like a peak, wherein the tooth portion of one of the two catches is ahead of or lags behind the tooth portion of another one of the two catches by a half-tooth distance, wherein only one catch is engaged with and driven by the ratchet teeth of the driving element, wherein an end of each of the two position-restoring elements abuts against a corresponding one of the two catches, whereas another end of each of the two position-restoring elements abuts against the catch holder, wherein the catch holder has an abutting surface for abutting against the catching chamber, wherein the catches and the catch holder each have a positioning portion corresponding in position to the two position-restoring elements and adapted to position the two position-restoring elements in place, such that the two position-restoring elements are positioned precisely at the catch holder, and the two position-restoring elements abut precisely against the catches, respectively.

1 more element

Dependencies are inferred from the claim text.