Open spanner and manufacturing method thereof
A technology of open-end wrench and manufacturing method, which is applied in the direction of wrench, manufacturing tools, screwdrivers, etc. It can solve the problems of insufficient strength, heavy and not light weight of pure steel wrench, and achieve the effect of reducing the weight of the wrench
Active Publication Date: 2012-07-11
METAL INDS RES & DEV CENT
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Problems solved by technology
[0002] like figure 1 As shown, the general open-end wrench (wrench) 10 is made of integrally formed steel, although the wrench 111 of its head 11 has enough strength to lock / unscrew the screw, its grip 12 should also have a certain limit of strength to provide Sufficient torsional rigidity, but the overall weight is not light, especially in the construction of large screws, and in the carrying, storage, transportation or use of high-altitude operations (such as telecommunication towers, steel truss arch bridges, etc.), it cannot satisfy the user's light weight. Quantitative requirements
Especially in the field of oil drilling platform, wind power generation, electric tower, high-rise, mountaineering or mountainous wrench, etc., the traditional pure steel wrench is often criticized because of its heavy weight, but it is forced to accept it.
[0003] Another problem faced is that if the open end wrench 10 is made of light alloy for light weight, the strength of the wrench is relatively insufficient when screwing / unscrewing steel screws
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[0048] The preferred embodiments of the present invention are described in detail below with reference to the drawings.
[0049] like Figure 2 to Figure 5 As shown, the open-end wrench of the present embodiment is used for screw lock / screw unloading a screw head s (such as Figure 5 As shown), the structure of the open end wrench includes: a body 20 and a cover 30. The body 20 has a head 21 and a handle 22 connected to the head 21 . The head 21 also has a fork 211 , and a U-shaped notch 212 is formed on the inner side 2111 of the fork 211 . The cover body 30 has a first plate body 31, a second plate body 32 opposite to the first plate body 31, and a third plate body 33 connecting the first plate body 31 and the second plate body 32. The surface on the outside of the three-plate body 33 is curved to form a wrench 331, and this wrench 331 is used to screw lock / screw unload a screw head s (such as Figure 5 As shown), the outer edge contours of the first plate 31, the second ...
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The invention discloses an open spanner and a manufacturing method thereof. The open spanner structurally comprises a body and a cover, the body is provided with a head and a holding portion, and the head is provided with a fork and a notch formed by inner side edges of the fork. The cover is provided with a first plate, a second plate and a third plate, the first plate is connected with the second plate by the third plate, a spanner opening is formed on the outer side surface of the third plate, a cover opening is defined by outer edges of the first plate, the second plate and the third plate, and the cover opening penetrates into the fork, so that the cover covers the notch and is embedded with the head. A design of different materials and joints is applied, advantages of the raw materials are ingeniously reserved, after the different materials are combined, rigidity of the spanner opening of the spanner can be kept, and the open spanner has the advantage of light weight.
Description
technical field [0001] The invention relates to an open-end wrench and a manufacturing method thereof, in particular to an open-end wrench with two different materials and a manufacturing method thereof. Background technique [0002] like figure 1 As shown, the general open-end wrench (wrench) 10 is made of integrally formed steel, although the wrench 111 of its head 11 has enough strength to lock / unscrew the screw, its grip 12 should also have a certain limit of strength to provide Sufficient torsional rigidity, but the overall weight is not light, especially in the construction of large screws, and in the carrying, storage, transportation or use of high-altitude operations (such as telecommunication towers, steel truss arch bridges, etc.), it cannot satisfy the user's light weight. Quantitative requirements. Especially in areas where lightweight wrenches are required, such as oil drilling platforms, wind power generation, electric towers, high-rise buildings, mountaineer...
Claims
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IPC IPC(8): B25B13/08B25B23/00
Inventor 姜志华洪博煜
Owner METAL INDS RES & DEV CENT