Clench wrench

Patent metadata

Field	Value
Publication number	US-10792791-B2
Application number	US-201815990979-A
Country	US
Kind code	B2
Filing date	May 29, 2018
Priority date	Mar 18, 2015
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

A clench wrench includes a structure including a handle and an engaging head. The engaging head includes an engaging space extending through front and back sides thereof. The engaging space defines an opening on both the front and back sides. A clenching device is mounted on the engaging head and includes a clenching member. The clenching member includes a clenching portion and is operable in a first mode in which the clenching portion is located at a first position and capable of clenching an object engaged with the engaging head, and a second mode in which the clenching portion is disposed away from the engaging space and is located at a second position and capable of letting the object engaged with the engaging head disengage therefrom.

First claim

What is claimed is:

1. A clench wrench comprising:
a structure including a first body defining a handle for a user to grasp and a second body defining an engaging head for engaging with an object to be clenched respectively, wherein the engaging head includes an engaging space for receiving the object engaged with and to be driven by the clench wrench, wherein the engaging head has two opposite sides with one side defining a front side and the other side defining a back side respectively and includes the engaging space extending through the front and back sides and defining an opening in each of the front and back sides; and
a clenching member having a first end being a fixed end fixed to the engaging head and a second end being a free end and having a clenching portion configured for clenching the object, wherein the clenching member is resilient such that the clenching portion is operable in a first mode in which the clenching portion is located at a first position and configured to clench the object received by the engaging space, and a second mode in which the clenching portion is disposed away from the engaging space and is located at a second position and configured to let the object engaged with the engaging head disengage therefrom;
wherein the clenching member has a middle portion between the fixed end and the free end, and wherein the middle portion and fixed and free ends, in a lateral direction, each have a cross-sectional area, and the cross-sectional area of the middle portion is smaller than the cross-sectional areas of the respective fixed and free ends; and
wherein the middle portion includes a first curved portion and a second curved portion, wherein a center of curvature of the first curved portion and a center of curvature of the second curved portion are respectively located on two opposite sides of the middle portion, wherein the center of curvature of the first curved portion is located on a side of the middle portion that is adjacent to the engaging space, wherein the center of curvature of the second curved portion is located on another side of the middle portion that is opposite to the engaging space, and wherein the second curved portion is located between the first curved portion and the clenching portion.

2. The clench wrench as claimed in claim 1 , wherein the clenching member is disposed on one of the front and back sides of the engaging head, and wherein the clenching portion is located at the free end of the clenching member.

3. The clench wrench as claimed in claim 2 , wherein the fixed end of the clenching member and one of the front and back sides of the engaging head respectively includes a hole and an engaging hole, and a first fastener inserts into the hole and the engaging hole and fastens the clenching member on the engaging head.

4. The clench wrench as claimed in claim 1 , wherein an average radius of curvature of the first curved portion is set as a first radius and an average radius of curvature of the second curved portion is set as a second radius respectively, and wherein the second radius is larger than the first radius.

5. The clench wrench as claimed in claim 4 , wherein the second radius is larger than 1.5 times the first radius and is smaller than 2 times the first radius.

6. The clench wrench as claimed in claim 5 , wherein the clenching portion of the clenching member has an outer edge forming a sloped guiding edge configured to facilitate the insertion of the object into the engaging space.

7. The clench wrench as claimed in claim 1 , wherein the structure includes a limiting groove in the engaging head and a side of the limiting groove includes a limiting portion, wherein the clenching member includes a limiting protrusion protruding from a side of the clenching portion, and wherein the limiting protrusion is movably received in the limiting groove relative to the structure in response to the operation of the clenching member, and wherein when the clenching portion is located at the second position the limiting protrusion is stopped from moving out of the limiting groove by the limiting portion.

8. The clench wrench as claimed in claim 1 , wherein the clenching member is a metallic member.

9. The clench wrench as claimed in claim 1 , wherein the engaging space is defined by an inner periphery of a ratchet wheel, wherein the ratchet wheel is rotatably engaged with the engaging head and has a center of rotation about an axis, and wherein the axis extends in a thickness direction of the engaging head.

10. The clench wrench as claimed in claim 9 further comprising a switch device interacted with the ratchet wheel and configured to releasably stop the ratchet wheel from rotation, and wherein the switch device includes an input control exposed from the engaging head.

11. The clench wrench as claimed in claim 1 , wherein the clenching member is a thin plate that has a substantially smaller thickness than a thickness of the engaging head.

12. The clench wrench as claimed in claim 1 , wherein the engaging head includes a wall disposed above and shielding the clenching member.

13. The clench wrench as claimed in claim 1 , wherein the clenching member has a main body and includes a lever protruding upwardly from the main body.

Assignees

• Hong Ann Tool Ind Co Ltd

Inventors

• Su Cheng-Wei

Classifications

• B25B23/0057 Primary

  Socket or nut ejector means · CPC title

• B25B13/06

  of socket type · CPC title

• B25B13/463

  a pawl engaging an externally toothed wheel · CPC title

• B25B13/468 Primary

  with possibility of locking the ratchet mechanism · CPC title

• B25B23/0071

  Abutment for screws or nuts · CPC title