Patent Application
20190015960
The present invention relates to a wrench, and more particularly, to a wrench for operating objects of different sizes.
One of the commonly used tool hands is ratchet wrench which includes a ratchet mechanism received in the wrench, and the pawl is controlled to be engaged with or disengaged from the driving gear received in the head of the wrench. The advantages of the ratchet wrenches are that the wrench does not need to be dismounted from the object when the wrench is rotated to an angle, and then is re-mounted to the object for another rotating action.
However, the conventional ratchet wrenches mostly have a complicated ratchet mechanism which is different assembled into a narrow space in the wrench. Besides, the conventional ratchet wrenches have to be cooperated with sockets to tighten or loosen the objects such as bolts or nuts.
The present invention intends to provide a wrench which eliminates the shortcomings mentioned above.
The present invention relates to a wrench and comprises a body having a room defined in the top surface thereof. The body has two heads respectively formed on two ends thereof. Each head has an operation hole defined therethrough. Each of the operation holes communicates with the room. A first slot is defined through the bottom surface of the body and communicates with the room. A positioning rod is received in the room and has an outer threaded portion formed on the mediate portion thereof. A rotary member is rotatably and threadedly mounted to the outer threaded portion of the positioning rod. The rotary member is located in the first slot. A cover is connected to the top surface of the body and has a second slot. The rotary member partially protrudes from the second slot.
Preferably, the rotary member is a collar with inner threads, and has a serrated surface defined in the outer periphery thereof.
Preferably, the two operation holes have different inner diameters.
Preferably, the two operation holes are polygonal holes.
Preferably, the two operation holes are hexagonal holes.
Preferably, the body is an elongate body.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
Referring to
A positioning rod 20 is received in the room 11 and has an outer threaded portion 21 formed on the mediate portion thereof. One of two ends of the positioning rod 20 extends into the operation hole 121 corresponding thereto.
A rotary member 30 is rotatably and threadedly mounted to the outer threaded portion 21 of the positioning rod 20. In this embodiment, the rotary member 30 is a collar with inner threads which are threadedly engaged with the outer threaded portion 21 of the positioning rod 20. The rotary member 30 has a serrated surface 31 defined in the outer periphery thereof. The rotary member 30 is located in the first slot 111. A cover 40 is connected to the top surface of the body 10 and seals the room 11. The cover 40 has a second slot 41, and the rotary member 30 partially protrudes from the second slot 41.
It is noted that the two operation holes 121 are polygonal holes and have different inner diameters. Specifically, the two operation holes 121 are hexagonal holes.
As shown in
The objects 50 of different sizes can be securely positioned in the operation hole 121 by rotating the rotary member 30 as shown in
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
