Patent Application
20240082988
The disclosure relates to a hand tool, particularly to a ratchet wrench.
Hand tools are widely applied to the fields of various industrial manufacture, especially wrenches. A wrench is usually used to loosen or tighten a bolt and nut or be installed with a tool head (flat or cross). A related-art open-end wrench needs large operating space for use. In a narrow space, the wrench must be taken off after rotating to a small angle because of the environmental limitation, and then re-grips a nut or bolt before rotating again. Thus, a ratchet wrench is developed to make users be able to continuously rotate a nut or bolt without taking off the wrench from the nut or bolt in a narrow space.
However, the fixing pit of related-art ratchet wrench for a bolt, nut or tool head is a through hole, so the bolt, nut or tool head may pass out of the ratchet wrench during the operation. The fixing pit is difficult to be fixed with a bolt, nut or tool head and it causes slippery escapes or unsmooth switches in rotation. Also, related-art ratchet wrench can only match a single-size bolt, nut or tool head, so users must prepare multiple ratchet wrenches with different sizes for future use. That may increase cost, need to find the corresponding size first, and required storage space is enormous.
In view of this, the inventors have devoted themselves to the above-mentioned related art, researched intensively and cooperated with the application of science to try to solve the above-mentioned problems. Finally, the invention which is reasonable and effective to overcome the above drawbacks is provided.
An object of the disclosure is to make a ratchet wrench be capable of using forward or reversely, and a workpiece may not protrude from the working end to facilitate operating.
To accomplish the above object, the disclosure provides a ratchet wrench for rotating a workpiece with a top side, the ratchet wrench includes a wrench body and a ratchet. The wrench body has a working end. The working end has a first end face and a second end face opposite to each other. The working end is disposed with a through hole penetrating the first end face and the second end face. The ratchet is rotatably disposed in the through hole. An end face of the ratchet is formed with a first tool trough, and another end face of the ratchet is formed with a second tool trough communicating with the first tool trough. The first tool trough is arranged corresponding to the first end face and has a first blocking face. The second tool trough is arranged corresponding to the second end face and has a second blocking face. At least a part of the workpiece is optionally received in one of the first tool trough and the second tool trough to make the top side abut against the first blocking face or the second blocking face.
The disclosure further has the following functions. The first tool trough and the second tool trough may accommodate workpieces with different sizes. The workpiece abuts against the first blocking face or the second blocking face to avoid the workpiece from protruding from the working end. The elastic binding ring disposed in the ratchet may clamp and fix the workpiece to avoid the workpiece from escaping. The fixing ring disposed in the fixing trough may clamp and fix the ratchet to avoid the ratchet from escaping. The restraint flange stops the engaging portion to initially position the ratchet.
The technical contents of this disclosure will become apparent with the detailed description of embodiments accompanied with the illustration of related drawings as follows. It is intended that the embodiments and drawings disclosed herein are to be considered illustrative rather than restrictive.
The disclosure provides a ratchet wrench for rotating a workpiece A with a top side A1. Please refer to
The wrench body 10 has a working end 11. The working end 11 has a first end face 111 and a second end face 112, which are opposite to each other. The working end 11 is disposed with a through hole 113 penetrating the first end face 111 and the second end face 112. In the embodiment, the first end face 111 and the second end face 112 are planar surfaces. The first end face 111 and the second end face 112 are parallel to each other and perpendicular to the penetrating direction of the through hole 113, but not limited to this, for example, the first end face 111 and the second end face 112 may also be arcuate surfaces, or inclines, or the first end face 111 and the second end face 112 are planar surfaces but not perpendicular to the penetrating direction of the through hole 113.
The ratchet 20 is rotatably disposed in the through hole 113. An end face of the ratchet 20 is formed with a first tool trough 21 and the other end face of the ratchet 20 is formed with a second tool trough 22. The first tool trough 21 is arranged corresponding to the first end face 111 and has a first blocking face 211. The second tool trough 22 is arranged corresponding to the second end face 112 and has a second blocking face 221. The first tool trough 21 and the second tool trough 22 communicates with each other and are arranged in staggered manner. Also, the first tool trough 21 and the second tool trough 22 are polygonal troughs (such as angular trough, square trough, pentagonal trough, hexagonal trough, etc.). In the embodiment, the first tool trough 21 and the second tool trough 22 are, but not limited to, equilaterally hexagonal troughs. In some embodiments, the side lengths of two equilaterally hexagonal troughs of the first tool trough 21 and the second tool trough 22 are different so that the first tool trough 21 and the second tool trough 22 may be separately equipped workpieces A with different sizes, but not limited to this.
It is noted that the ratchet 20 in the embodiment is formed with the first blocking face 211 at a distal end on each corner of the hexagon of the first tool trough 21, and the ratchet 20 is formed with the second blocking face 221 at a distal end on each corner of the hexagon of the second tool trough 22, but not limited to this, for example, some corners of the first tool trough 21 or the second tool trough 22 may penetrate another end face of the ratchet 20 so as to facilitate manufacturing of the ratchet 20 to reduce the costs. That distal ends on the corners of the hexagons of the first tool trough 21 and the second tool trough 22 are separately formed with at least one first blocking face 211 and at least one second blocking face 221 is enough.
The workpiece A may be a flat tool head, a cross tool head, a bolt, a nut or other tools with polygonal peripheries. In the embodiment, the workpiece A shown in
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While this disclosure has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of this disclosure set forth in the claims.
