TWI395639B - Wrench structure improvement - Google Patents

Description

Wrench structure improvement

The invention relates to a structural improvement of a wrench, in particular to a wrench structure improvement which can increase the torque value of the wrench and its strength.

According to the use of wrench tools, it is an indispensable and important tool for today's industrial development. With the wide use rate and increasing demand rate, the functions and types of wrench structures have also developed differently. For the change, please refer to the first figure. The wrench 1 is mainly provided with an open end wrench 11 and a quincunx type fixed wrench 12 at the two ends of the handle portion 13 (the type of the wrench opened at the two ends can be changed according to requirements, and the present invention only The two types of wrenches are integrally formed by a shank 13 extending from the two-axis side of the open-end wrench 11 to the two-axis of the plum-shaped fixed-wound wrench 12, as exemplified by an open-end wrench and a plum-type fixed wrench. The axis formed by the edge is a flat thin structure, that is, the entire shank 13 is of a thickness and a slightly elongated rectangular shape (as shown in the second to fourth figures), so when the user holds When holding and pulling, the shear stress generated by the pulling is often required to be received by the gripped shank 13 near the open wrench 11 and the plum-type fixed wrench 12 and its proximal section, and the shank 13 can withstand Shear stress, usually required to form The wrench 1 is appropriately processed to increase its hardness. However, the hardness of the handle 13 is increased, and the hardness and brittleness of the open wrench 11 and the plum-type fixed wrench 12 are also increased, and the toughness is relatively reduced. The torque value that can be withstood is reduced, and if the toughness of the open end wrench 11 and the quincunx type fixed wrench 12 is to be maintained, the hardness of the shank portion 13 is relatively poor, and the hard force is often caused when the applied force is large. The poorly shank 13 is deformed, which causes trouble for the user.

Therefore, the inventor of this case has based on his years of experience in the design and manufacture of various hardware tools, especially the ink of the wrench tool, in view of the lack of effectiveness of the existing wrench tool, in order to provide a change in the structure of the handle, and The torque value and strength of the wrench can be increased, and it is actively researched and improved. Through many experiments and changes, the creation of this creation is finally achieved.

That is, the main object of the present invention is to form a shank formed by four axes which are alternately formed by the shaft edge and the rhombic edge, thereby generating thickness and sectional shape changes of different parts, and increasing the torque value and strength of the wrench. The wrench structure is improved.

For the purpose of the present invention, the present invention mainly provides an open-end wrench and a plum-type fixed wrench at the two ends of the handle, and the open-end wrench and the plum-type fixed wrench are not in the same plane, wherein the handle is an open-end wrench. The shaft edge extends to the diamond edge of the plum-type fixed wrench to form an axis and the diamond edge of the open-end wrench extends to the axial edge of the plum-type fixed wrench to form an axis, and the four axes are alternately formed by the shaft edge and the rhombic edge. The formed shank produces different thicknesses and cross-sectional shapes at different locations, and the four axial axes of the shank near the middle portion of the shank are concentrated to have the same thickness and the same cross-sectional area to withstand a large force to enhance The strength, and the cross-sectional area of the shank near-opening wrench and the near-plum-type fixed wrench form a nearly diamond-shaped cross section rather than a flat shape to withstand a larger force wrench structure.

Hereinafter, for the above purposes, the structural contents and characteristics of the present invention are as follows. With the detailed description of the drawings, I believe that I can further understand the content of this creation and the effects it produces.

Referring to the fifth to seventh embodiments, the wrench 2 of the present invention is mainly provided with an open end wrench 21 and a quincunx type fixed wrench 22 at the two ends of the handle portion 23 (the type of the wrench opened at the two ends can be required In the present invention, the open end wrench 21 and the quincunx type fixed wrench 22 are not in the same plane, wherein the outer diameter of the handle portion 23 is formed by the open end wrench 21 The shaft edges 211, 212 parallel to the workpiece nesting section A extend to the rhombic 221, 222 of the plum-type fixed wrench 22 perpendicular to the workpiece nesting section B to form an outer diameter edge of the axes 24, 25 and the open-end wrench 21 The rhombic edges 213, 214 perpendicular to the workpiece nesting section A extend to the shaft edges 223, 224 of the quasi-type fixed wrench 22 parallel to the workpiece nesting section B to form an outer diameter edge of an axis 26, 27; The shank portion 23 of the wrench 2 extends from the shaft edges 211 and 212 of the open-end wrench 21 to the rhombic edges 221 and 222 of the Phillips-type fixed wrench 22 by the open-end wrench 21 and the Phillips-type fixed wrench 22 . And forming an axis 24, 25 and the diamond edge 213, 214 of the open wrench 21 Extending to the shaft edges 223, 224 of the plum-type fixed wrench 22 to form an axis 26, 27, so that the cross-sectional area of the wrench 2 near the open wrench 21 (as shown in the eighth figure), the wrench 2 handle 23 near The cross-sectional area of the middle section (as shown in the ninth figure) and the cross-sectional area of the wrench 2 of the wrench 2 near the plum-shaped fixed wrench 22 (as shown in the tenth figure) are different, and the different parts of the handle 23 are different in thickness and The shape of the cross-section is changed, and the four axes 24, 25, 26, 27 of the near middle portion of the shank portion 23 in the stress at the time of stress are generated to have a cross-sectional area of similar thickness and thickness, so that the stress during stress is not It will focus on one side without causing damage or deformation of the handle 23 to withstand a large force, and the cross-sectional area of the shank 23 near-opening wrench 21 and the near-stitch-type fixed wrench 22 forms a nearly diamond shape. The section is not flat (a section formed by a nearly rhombic shape due to the four axes formed by the interlacing of the shaft and the rhombic). The strength is much longer and the section of the rectangle can withstand a larger force. In this way, not only can the open-end wrench 21 and the quincunx type fixed wrench 22 have greater toughness to withstand large torque, but the shank portion 23 formed by the four axes of the shaft edge and the rhombic edge are alternately formed to enhance Its strength.

The present invention has been described by way of example only, and various modifications may be made by those skilled in the art, and the present invention should be included in the spirit and scope of the present invention.

In summary, the shank formed by the four axes which are formed by the interdigitation of the shaft edge and the rhombic edge produces different thickness variations, and the same middle section of the shank in the stress during the stress is generated. The area is to withstand a large force to enhance its strength, and the cross-sectional area of the shank near-opening wrench and the near-plum-type fixed wrench forms a nearly diamond-shaped section instead of a flat shape, and can withstand a large force. Whether it is a structural change or an improvement in efficacy, it is beyond doubt, and this creation has not been seen in the publication before the application, nor has it been used publicly. It has already met the requirements for patent application and has filed a patent application according to law.

1‧‧‧ wrench

11‧‧‧Opening wrench

12‧‧‧ Plum-type fixed wrench

13‧‧‧ handle

2‧‧‧ wrench

21‧‧‧Opening wrench

22‧‧‧ Plum-type fixed wrench

211, 212, 223, 224‧‧‧ shaft edge

213, 214, 221, 222‧‧ ‧ 菱

23‧‧‧ handle

24, 25, 26, 27 ‧ ‧ axis

A, B‧‧‧ workpiece nesting

The first figure is a schematic view of the plane appearance of the conventional wrench.

The second figure is a schematic view of A-A of the first figure.

The third figure is a schematic diagram of B-B of the first figure.

The fourth figure is a C-C diagram of the first figure.

The fifth drawing is a schematic view of the three-dimensional appearance of the present invention.

The sixth figure is a schematic plan view of the present invention.

Figure 7 is a schematic plan view of another perspective of the present invention.

The eighth figure is a schematic diagram of A-A of the seventh figure.

The ninth figure is a schematic diagram of B-B of the seventh figure.

The tenth figure is a schematic view of the C-C of the seventh figure.

2‧‧‧ wrench

21‧‧‧Opening wrench

22‧‧‧ Plum-type fixed wrench

211, 212, 223, 224‧‧‧ shaft edge

213, 221‧‧ ‧ 菱

23‧‧‧ handle

24, 25, 26, 27 ‧ ‧ axis

A, B‧‧‧ workpiece nesting

Claims (5)

The utility model relates to an improved structure of a wrench, which is mainly provided with an open-end wrench and a plum-type fixed-fixing wrench at two ends of the handle, wherein the outer diameter of the handle is extended from the shaft edge of the open-end wrench parallel to the workpiece insertion section to the plum-shaped type An outer diameter edge of the fixed wrench on the vertical side of the workpiece insertion section to form an axis and a rhombic edge perpendicular to the workpiece insertion section of the open wrench extend to the axis of the plum-shaped fixed wrench parallel to the workpiece nesting section Forming an outer diameter edge of an axis, and the sectional shape of the cross-sectional area of the handle near the open end wrench, the cross-sectional area of the near-middle section of the handle, and the sectional shape of the cross-sectional area of the shank-type fixed wrench Produces different thicknesses and cross-sectional shapes. The wrench structure improvement according to the first aspect of the patent application, wherein the open end wrench and the plum-type fixed wrench are not in the same plane. The structural improvement of the wrench according to the first aspect of the patent application, wherein the cross-sectional area of the four axes of the middle portion of the wrench handle is a diamond shape having a circumferential circumference close to each other. The wrench structure according to the first aspect of the invention is characterized in that the cross-sectional area of the shank at the end of the near-opening wrench end is a cross-sectional shape of a nearly rhombic shape. The structure of the wrench according to the first aspect of the invention is as follows: wherein the shank is located at a cross-sectional area of the four ends of the near-flange type fixed wrench end to form a cross-sectional shape of a nearly rhombic shape.