The present invention relates to a C-type pliers which switches a clamp direction and a unclamp direction of the first elongated jaw and the second elongated jaw quickly by using the switching unit so as to be applicable for the inner diameter and the outer diameter of the C ring, such that the user allows operating a single C-type pliers to clamp or unclamp C ring without using two different types of C-type pliers.
Referring to
However, the cover spaces apart from the movable switchplate, so the cover is connected with the movable switchplate complicatedly, thus having high production cost.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary object of the present invention is to provide a C-type pliers which switches a clamp direction and a unclamp direction of the first elongated jaw and the second elongated jaw quickly by using the switching unit so as to be applicable for the inner diameter and the outer diameter of the C ring, such that the user allows operating a single C-type pliers to clamp or unclamp C ring without using two different types of C-type pliers.
Another object of the present invention is to provide a C-type pliers in which the first cover and the second cover drive the switching unit directly, thus assembling the C-type pliers easily so as to lower production cost further.
To obtain the above objective, a C-type pliers provided by the present invention contains:
a first handle, a second handle, a first elongated jaw, a second elongated jaw, and a switching unit; wherein
the first elongated jaw and the second elongated jaw include two lower ends for pivoting with two head ends of the first handle and the second handle;
the first elongated jaw includes a first recess defined on a surface thereof and corresponding to the first handle, the second elongated jaw includes a second recess defined on a surface thereof and corresponding to the first handle, the first elongated jaw also includes a third recess defined on another surface thereof and corresponding to the second handle, the second elongated jaw includes a fourth recess defined on another surface thereof and corresponding to the second handle, such that when the first elongated jaw and the second elongated jaw clamp a workpiece at a certain travel, the first recess communicates with the second recess, and the fourth recess communicates with the third recess;
the first handle includes a first notch formed on a head end thereof so that as the first elongated jaw clamps with the second elongated jaw, the first notch communicates with either or both of the first recess and the second recess, and the second handle includes a second notch formed on a head end thereof so that as the first elongated jaw clamps with the second elongated jaw, the second notch communicates with either or both of the fourth recess and the third recess;
the switching unit includes a first cover for covering the first handle, a second cover for covering the second handle, a shaft extending outwardly from the second cover and used to drive the first cover and the second cover simultaneously, the shaft pivots the first handle, the second handle, the first elongated jaw, and the second elongated jaw;
the switching unit also includes a first retainer, disposed in the first cover, movably inserting through the first notch, and driven by the first cover so as to retain in the first recess or the second recess, the switching unit further includes a second retainer, disposed in the second cover, movably inserting through the second notch, and driven by the second cover so as to retain in the fourth recess or the third recess, when the first retainer retains in the first recess, the second retainer retains in the fourth recess simultaneously, and when the first retainer retains in the second recess, the second retainer retains in the third recess synchronously.
The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.
With reference to
The first elongated jaw 3 and the second elongated jaw 4 include two lower ends for pivoting with two head ends of the first handle 1 and the second handle 2;
The first elongated jaw 3 includes a first recess 31 defined on a surface thereof and corresponding to the first handle 1, the second elongated jaw 4 includes a second recess 41 defined on a surface thereof and corresponding to the first handle 1, the first elongated jaw 3 also includes a third recess 32 defined on another surface thereof and corresponding to the second handle 2, the second elongated jaw 4 includes a fourth recess 42 defined on another surface thereof and corresponding to the second handle 2, such that when the first elongated jaw 3 and the second elongated jaw 4 clamp a workpiece at a certain travel, the first recess 31 communicates with the second recess 41, and the fourth recess 42 communicates with the third recess 32.
The first handle 1 further includes a first notch 11 formed on a head end thereof so that as the first elongated jaw 3 clamps with the second elongated jaw 4, the first notch 11 communicates with either or both of the first recess 31 and the second recess 41. The second handle 2 further includes a second notch 21 formed on a head end thereof so that as the first elongated jaw 3 clamps with the second elongated jaw 4, the second notch 21 communicates with either or both of the fourth recess 42 and the third recess 32.
The switching unit 5 includes a first cover 51 for covering the first handle 1, a second cover 52 for covering the second handle 2, a shaft 53 extending outwardly from the second cover 52 and used to drive the first cover 51 and the second cover 52 simultaneously. In addition, the shaft 53 pivots the first handle 1, the second handle 2, the first elongated jaw 3, and the second elongated jaw 4.
The switching unit 5 includes a first retainer 54, disposed in the first cover 51, movably inserting through the first notch 11, and driven by the first cover 51 so as to retain in the first recess 31 or the second recess 41. The switching unit 5 also includes a second retainer 55, disposed in the second cover 52, movably inserting through the second notch 21, and driven by the second cover 52 so as to retain in the fourth recess 42 or the third recess 32. In addition, when the first retainer 54 retains in the first recess 31, the second retainer 55 retains in the fourth recess 42 simultaneously. And when the first retainer 54 retains in the second recess 41, the second retainer 55 retains in the third recess 32 synchronously.
Thereby, when the first retainer 54 and the second retainer 55 are switched to retain in the first recess 31 and the fourth recess 42, the first handle 1 drives the first elongated jaw 3, and the second handle 2 drives the second elongated jaw 4, such that the first handle 1 presses the second handle 2, and the second elongated jaw 4 and the first elongated jaw 3 are in a clamping state. Furthermore, when the first retainer 54 and the second retainer 55 are switched to retain in the second recess 41 and the third recess 32, the first handle 1 drives the second elongated jaw 4, and the second handle 2 drives the first elongated jaw 3, such that the first handle 1 presses the second handle 2, and the second elongated jaw 4 and the first elongated jaw 3 are in a unclamping state.
Further, the C-type pliers of the present invention also comprises a spring 6 mounted between the first handle 1 and the second handle 2 so as to abut against the first handle 1 and the second handle 2, such that the first handle 1 spaces apart from the second handle 2.
The switching unit 5 also includes a first outer spring 511 and a first inner spring 512 fixed in the first cover 51, such that a section of the first outer spring 511 is biased against the first retainer 54 as the first cover 51 rotates toward one side by which the first retainer 54 is pushed into the first recess 31, and a section of the first inner spring 512 is biased against the first retainer 54 as the first cover 51 rotates toward another side by which the first retainer 54 is pushed into the second recess 41.
The switching unit 5 further includes a second outer spring 521 and a second inner spring 522 secured in the second cover 52, such that a section of the second outer spring 521 is biased against the second retainer 55 as the second cover 52 rotates toward one side by which the second retainer 55 is pushed into the fourth recess 42, and a section of the second outer spring 521 is biased against the second retainer 55 as the second cover 52 rotates toward another side by which the second retainer 55 is pushed into the third recess 32.
Moreover, the first cover 51 has a switch bar 513 extending outwardly therefrom so that the switching unit 5 is switched easily by ways of the switch bar 513.
The first handle 1 further includes a rib 12 formed on the head end thereof, and the first cover 51 has a limiting slot 514 for matching with the rib 12 so as to limit a rotation range of the first handle 1.
As shown in
Thereby, the C-type pliers switches a clamp direction and a unclamp direction of the first elongated jaw 3 and the second elongated jaw 4 quickly by using the switching unit 5 so as to be applicable for the inner diameter and the outer diameter of the C ring, such that the user allows operating a single C-type pliers to clamp or unclamp C ring without using two different types of C-type pliers. In addition, the first cover and the second cover drive the switching unit 5 directly, thus assembling the C-type pliers easily so as to lower production cost further.
While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.
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Number | Date | Country | |
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20140202291 A1 | Jul 2014 | US |