TWI727803B - Tool jaw width adjustment structure - Google Patents

Abstract

A structure for adjusting the width of a tool jaw includes a first pliers body and a second pliers body that are crossed and stacked. The first pliers body is provided with a long hole, one side of the long hole is provided with a row of teeth; the second pliers body is provided with a shaft extending through the long hole, and the end of the shaft is provided with a side extending out of one side of the tooth row The side plate, and the shaft column is provided with a tooth block that engages the tooth row. When the second pliers body is opened relative to the first pliers body, the shaft column is driven to move from a first position to a second position in the long hole, thereby increasing the width of the clamping opening.

Description

Tool jaw width adjustment structure

The present invention relates to hand tools, especially a kind of pliers.

Pliers are a tool that uses the principle of leverage to save effort. In order to improve the labor-saving effect, the force application arm of the pliers should be long and the resistance arm should be short. However, the short resistance arm will cause the opening of the opening to be not wide enough to properly grip the workpiece; on the other hand, if the clamping is made When the mouth reaches a predetermined width, the force arm (ie, the pliers handle) will be longer, and the distance between the ends will be greater, making it difficult to operate with one hand. Therefore, my country's new patent announcement No. M412843 discloses a slip joint pliers. One pliers body is provided with a window, wherein the window forms a shape with wider ends and a narrower middle, and the other pliers body penetrates the window with a pivot. When the two pliers bodies are relatively open, the pivot can be moved in the window to increase the width of the jaws.

However, in the above-mentioned conventional structure, the pivot is formed into a long flat shape and must be placed in a specific direction to pass through the narrower passage in the middle of the window. Therefore, the position of the pivot must be adjusted before opening the pliers. After opening, a wider jaw is obtained, which is very complicated in operation. On the other hand, the user must use both hands to perform the above-mentioned operations, but cannot be done with one hand, which has the disadvantage of inconvenience.

In view of this, how to improve the above-mentioned problem is the primary problem to be solved by the present invention.

The main purpose of the present invention is to provide a tool jaw width adjustment structure, which can utilize the movement of the shaft column to expand the jaw when the tool is opened, and has the effects of simple structure and convenient operation.

To achieve the foregoing objective, the present invention provides a tool jaw width adjustment structure, which includes: A first pliers body provided with a long hole of equal width along the length direction, and one side of the long hole is provided with a row of teeth extending along the length direction; A second pliers body intersecting with the first pliers body is provided with a shaft extending through the elongated hole, the end of the shaft column is provided with a side plate extending to one side of the tooth row, the shaft The column is provided with a tooth block that engages the tooth row; when the second pliers body is opened relative to the first pliers body, the shaft column is driven to move from a first position in the long hole to a second position, thereby increasing The width of the large jaw.

In one embodiment, the second pliers body is provided with a through hole, one side of the through hole is provided with a fixed nut, and one end of the shaft passes through the through hole and is locked with the fixed nut.

In another embodiment, the shaft is fixed to the second pliers body by riveting.

It is not difficult to obtain an in-depth understanding of the above-mentioned objects and advantages of the present invention from the following detailed description of the selected embodiments and the accompanying drawings.

Please refer to Figures 1 and 2, which shows the tool jaw width adjustment structure provided by the present invention, which includes a first pliers body 1 and a second pliers body 2 that are overlapped. The first pliers body 1 is provided with an elongated hole 11, and one side of the elongated hole 11 is provided with a tooth row 12 extending along its length, wherein the tooth row 12 is integrally forged with the first pliers body 1 to form To achieve the purpose of high strength.

On the other hand, the second pliers body 2 is provided with a perforation 21 corresponding to the elongated hole 11, and a fixing nut 22 is provided on one side. A shaft 3 is provided with a threaded section 31 at one end thereof, and passes through the long hole 11 and the through hole 21 to be locked to the fixing nut 22, and is fixed to the second pliers body 2 accordingly. Or in other embodiments, the shaft 3 can be fixed to the second clamp body 2 by riveting.

The shaft 3 extends through the elongated hole 11, and the end is provided with a side plate 32, wherein the side plate 32 extends beyond one side of the tooth row 12, so that the first pliers body 1 is affected by the side plate due to the tooth row 12 32 is blocked and positioned on the second clamp body 2. In addition, a cover plate that can shield the side plate 32 is provided on one side of the first pliers body 1 to prevent debris from entering the elongated hole 11.

One side of the shaft column 3 is provided with a tooth block 33 that meshes with the tooth row 12, wherein the tooth block 33 and the tooth row 12 can be meshed in the shape of a straight tooth or a helical tooth. When the second pliers body 2 is pivotally opened relative to the first pliers body 1, the shaft column 3 rotates with the second pliers body 2, and at the same time, the meshing relationship between the tooth block 33 and the tooth row 12 makes the shaft The column 3 in the long hole 11 can be moved from a first position as shown in Fig. 3 to a second position as shown in Fig. 4. When the two pliers bodies are opened, the displacement of the shaft column 3 in the elongated hole 11 can be used to expand the width of the clamping mouth to facilitate clamping of larger workpieces.

With the above structure, the present invention will open the two pliers body at the same time, the shaft column 3 will synchronously move in the elongated hole 11 with the pivoting of the second pliers body 2, without the need for the user to manually adjust the According to the position of the shaft column 3, it is convenient for the user to hold the pliers with one hand and operate to open the two pliers bodies, and the width of the clamping mouth will be automatically expanded, thereby producing the effect of easy operation and convenient use.

However, the disclosure of the above embodiments is only used to illustrate the present invention, not to limit the present invention. Any replacement of equivalent elements should still belong to the scope of the present invention.

In summary, those skilled in the art can understand that this invention can clearly achieve the aforementioned purpose, and that it has actually complied with the provisions of the Patent Law, so it is necessary to file an application in accordance with the law.

1: The first clamp body 11: Long hole 12: Tooth row 2: The second clamp body 21: Piercing 22: Fixed nut 3: Axle column 31: Thread section 32: Side panel 33: Tooth block

Figure 1 is a three-dimensional exploded schematic diagram of the present invention; Figure 2 is a partial schematic diagram of the present invention; Figures 3 and 4 are schematic diagrams of the use state of the present invention.

1: The first clamp body

11: Long hole

12: Tooth row

2: The second clamp body

21: Piercing

22: fixed nut

3: Axle column

31: Thread section

32: side panel

33: tooth block

Claims (4)

A structure for adjusting the width of tool jaws, comprising: a first pliers body provided with a long hole of equal width along the length direction, one side of the long hole is provided with a row of teeth extending along the length direction; The second pliers body in which the first pliers body is crossed is provided with a shaft extending through the elongated hole, the end of the shaft column is provided with a side plate extending to one side of the tooth row, and the shaft column is provided with a When the second pliers body is opened relative to the first pliers body, the shaft column rotates with the second pliers body, so the meshing relationship between the tooth block and the tooth row makes the shaft The column is driven to move from a first position to a second position in the elongated hole, thereby increasing the width of the clamping opening. The tool jaw width adjustment structure according to claim 1, wherein the tooth row and the tooth block mesh with a straight tooth or a helical tooth. The tool jaw width adjustment structure according to claim 1, wherein the second pliers body is provided with a perforation, one side of the perforation is provided with a fixing nut, and one end of the shaft passes through the perforation and is connected to the fixing screw. The cap is locked. The tool jaw width adjustment structure according to claim 1, wherein the shaft column is fixed to the second pliers body by riveting.

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