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Opening width adjustable wrench

A technology of opening width and wrench, applied in the direction of wrenches, manufacturing tools, wrenches, etc., can solve the problems of reducing assembly efficiency, damage to the sharp edge of bolts and nuts, increasing opening gap, etc., to reduce the type and quantity, improve assembly efficiency, The effect of convenient operation

Active Publication Date: 2019-03-08
AECC SHENYANG ENGINE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For dull wrenches, the opening size is fixed, that is, each wrench can only be installed with one or two sizes of fasteners during the assembly process, which reduces the assembly efficiency; for adjustable wrenches, after multiple twists, often occurs The opening gap is enlarged and the opening size needs to be adjusted frequently, which reduces the assembly efficiency and is easy to cause damage to the sharp edges of bolts and nuts

Method used

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  • Opening width adjustable wrench

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specific Embodiment

[0053] The invention provides a wrench with adjustable opening width, the schematic diagram of its overall structure is as follows figure 1 As shown, including the handle 1, the upper jaw part 2, the stopper 3, the drive spring 4, the limit plate 5 and the adjustment part 6, the upper jaw part 2, the drive spring 4, the limit plate 5 and the adjustment part 6 are all installed on the On the handle 1 , the stopper 3 is installed in the upper jaw part 2 .

[0054] The structure diagram of the handle 1 is as follows figure 2As shown, the handle 1 is integrally provided with a lower jaw portion 11, and the side of the handle 1 opposite to the surface where the lower jaw portion 11 is located is an upper adjustment surface 12, and the upper adjustment surface 12 is provided with a groove that is as long as its length and has a cross-section of Ω type of sliding groove 13; one side of the sliding groove 13 is provided with a plurality of stop grooves 14 arranged linearly along the...

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Abstract

The invention relates to the technical field of tool clamps and particularly provides a wrench adjustable in opening width. A handle and a lower clamp part of the wrench are integrally formed. An upper clamp part is installed on the handle and can slide along a sliding groove of the handle. An adjusting part is arranged on the handle. A centre in the adjusting part is rotated, stretched out and retracted through a switch knob in the adjusting part, the centre prods a plurality of adjusting bosses of the upper clamp part so that the upper clamp part can be driven to move, and thus, the opening width of the wrench is decreased. The upper clamp part is provided with a retainer, the retainer cooperates with a retaining groove in the handle to work, when the retainer is lifted, the opening width is increased, and when the retainer is put down, the opening width is prevented from being increased. According to the wrench, the opening width is increased through a driving spring arranged on the handle, and the upper clamp part is prevented from being disengaged from the handle through a limiting plate arranged at the tail end of the handle.

Description

technical field [0001] The invention relates to the technical field of fixtures, in particular to a wrench with adjustable opening width. Background technique [0002] During engine assembly, a wrench is an essential tool. There are many types of wrenches used, such as dead wrenches, ring wrenches, ratchet wrenches, socket wrenches, adjustable wrenches, etc. For the installation of hexagonal head bolts or nuts, a dead wrench or adjustable wrench is often used. [0003] For dull wrenches, the opening size is fixed, that is, each wrench can only be installed with one or two sizes of fasteners during the assembly process, which reduces the assembly efficiency; for adjustable wrenches, after multiple twists, often occurs The opening gap increases and the opening size needs to be adjusted frequently, which reduces the assembly efficiency and easily causes damage to the sharp edges of the bolts and nuts. Contents of the invention [0004] In order to overcome at least one def...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B13/12B25B13/20
CPCB25B13/12B25B13/20
Inventor 张东林金美子李慎佩
Owner AECC SHENYANG ENGINE RES INST
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