TOOL JAW WIDTH ADJUSTMENT STRUCTURE

Abstract

A tool jaw width adjustment structure includes a first plier body and a second plier body that cross each other. The first plier body has an elongated hole. One side of the elongated hole is provided with a toothed portion. The second plier body is provided with a shaft inserting through the elongated hole. A distal end of the shaft is provided with a side plate extending beyond one side of the toothed portion. The shaft is provided with a toothed block meshing with the toothed portion. When the second plier body is opened relative to the first plier body, the shaft is driven to move from a first position to a second position in the elongated hole, so as to increase a width between jaws of the first and second plier body.

Claims

1. A tool jaw width adjustment structure, comprising: a first plier body, having an elongated hole, the elongated hole having a width that is consistent in a length direction, one side of the elongated hole being provided with a toothed portion extending along the length direction; a second plier body crossing the first plier body, the second plier body being provided with a shaft inserting through the elongated hole, a distal end of the shaft being provided with a side plate extending beyond one side of the toothed portion, the shaft being provided with a toothed block meshing with the toothed portion; wherein when the second plier body is opened relative to the first plier body, the shaft is driven to move from a first position to a second position in the elongated hole, so as to increase a width between jaws of the first and second plier body.

2. The tool jaw width adjustment structure as claimed in claim 1, wherein the toothed block and the toothed portion have straight teeth or oblique teeth to mesh with each other.

3. The tool jaw width adjustment structure as claimed in claim 1, wherein the second plier body has a through hole, one side of the through hole is provided with a retaining nut, and one end of the shaft is inserted through the through hole to be locked to the retaining nut.

4. The tool jaw width adjustment structure as claimed in claim 1, wherein the shaft is connected to the second plier body by riveting.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0011] FIG. 1 is an exploded view of the present invention;

[0012] FIG. 2 is a partial schematic view of the present invention; and

[0013] FIG. 3 and FIG. 4 are schematic views of the present invention when in use.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.

[0015] Referring to FIG. 1 and FIG. 2, a tool jaw width adjustment structure according to an embodiment of the present invention comprises a first plier body 1 and a second plier body 2 that cross each other. The first plier body 1 has an elongated hole 11. One side of the elongated hole 11 is provided with a toothed portion 12 extending along its length direction. The toothed portion 12 is integrally formed with the first plier body 1 by forging and pressing, so as to achieve the purpose of high strength.

[0016] The second plier body 2 has a through hole 21 corresponding in position to the elongated hole 11. One side of the through hole 21 is provided with a retaining nut 22. A shaft 3 is provided with a threaded section 31 at one end thereof. The threaded section 31 passes through the elongated hole 11 and the through hole 21 to be locked to the retaining nut 22, so as to be fixed to the second plier body 2. In other embodiments, the shaft 3 may be connected to the second plier body 2 by riveting.

[0017] The shaft 3 is inserted through the elongated hole 11, and is provided with a side plate 32 at its distal end. The side plate 32 extends beyond one side of the toothed portion 12, so that the first plier body 1 is positioned on the second plier body 2 because the toothed portion 12 is blocked by the side plate 32. A cover plate that shields the side plate 32 is provided on one side of the first plier body 1 to prevent debris from entering the elongated hole 11.

[0018] One side of the shaft 3 is provided with a toothed block 33 meshing with the toothed portion 12. The toothed block 33 and the toothed portion 12 may have straight teeth or oblique teeth to mesh with each other. When the second plier body 2 is pivotally opened relative to the first plier body 1, the shaft 3 is moved from a first position, as shown in FIG. 3, to a second position, as shown in FIG. 4, in the elongated hole 11 along with rotation of the second plier body 2 through the meshing relationship between the toothed block 33 and the toothed portion 12. When the two plier bodies are opened, the displacement of the shaft 3 in the elongated hole 11 increases the width between the jaws. This is beneficial for clamping larger workpieces.

[0019] With the above structure, when the two plier bodies of the present invention are opened, the shaft 3 will move in the elongated hole 11 synchronously with the pivoting movement of the second plier boy 2. There is no need for the user to manually adjust the position of the shaft 3. Thereby, it is convenient for the user to hold the pliers with one hand to open the two plier bodies. The width between the jaws can automatically increase, thereby achieving the effects of easy operation and convenient use.