JPH0621854U - Adjustable wrench - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a universal wrench that can securely tighten or loosen by holding down the three faces of hexagon bolts and nuts of a certain size. [Structure] An upper jaw having one end pivotally attached to a handle is provided with a pin, and the upper jaw has a notch portion to be hooked on two hexagonal surfaces of a hexagon bolt or a hexagon nut. Further, the handle is provided with a presser foot that moves up and down with a screw, and the presser foot can hold down the other side of the hexagon.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wrench, and more particularly, to a universal wrench.

[0002]

[Prior art]

 Different sizes are commonly used to tighten and loosen threaded connections such as hex bolts and nuts, so you will need a wrench or wrench of the appropriate size. . As a solution to this inconvenience, there is a so-called monkey wrench whose double-sided width is adjusted to fit a certain range of sizes. However, this monkey wrench may slip due to looseness in the screw part that adjusts the two-face width and wear of the hexagonal part of the bolt, which may prevent it from being tightened or loosened smoothly. Further devised in order to solve the above problems, there are wrench shown in, for example, JP-A-3-43159, JP-A-62-201666, JP-A-63-179065, JP-A-3-44562 and the like.

[0003]

[Problems to be solved by the device]

 The problems of ordinary spanners and monkey wrenches are as described above. However, the wrench shown in JP-A-3-43159, 62-201666 and 63-179065 is a three-sided hexagon bolt or hexagon nut. Since it is tightened or loosened while suppressing the problem, problems such as those of ordinary spanners and monkey wrenches are eliminated. However, in order to hang these wrenches on hexagon bolts and nuts, since these wrenches are box-type, a space for passing these wrenches is required above the hexagon bolts and nuts. Therefore, there is a problem that it cannot be used in a place where there is not enough space to pass these wrenches. Further, since the actual Kaihei 3-44562 is not a box type but a spanner type, the space for passing the wrench as described above is not required. However, in order to fix the metal fitting that holds one side of the hexagon, it is necessary to shift the position of the screw fixing the metal fitting and tighten the screw. The present invention is intended to provide a universal wrench that solves all the above problems.

[0004]

[Means for Solving the Problems]

 In the present invention, the handle has an upper jaw whose one end is pivotally attached by a pin, and the upper jaw has a notch portion to be hung on the two hexagonal surfaces of a hexagon bolt or a hexagon nut. Further, the handle is a free wrench which has a presser plate which can be raised and lowered by a screw, and the presser plate can hold the other surface of the hexagon.

[0005]

【Example】

 1 is a side view of a universal wrench of the present invention, FIG. 2 is a view taken along arrow A of FIG. 1, FIG. 3 is a view taken along arrow B of FIG. 1, and FIG. 4 is a view taken along arrow CC of FIG. In FIG. 1, 10 is a lever, 21 is an upper jaw, 22 is a notch, and 23 is one end of the upper jaw 21, where the upper jaw 21 is pivotally attached to the lever 10 by a pin 18. Reference numeral 11 is a support portion of the presser bar 13, and the presser bar 13 is slidably supported in the hole 12 as seen in FIG. A screw 14 is screwed on the lower portion of the presser plate 13, and a nut 15 is screwed onto the screw 14. 16 is the money received. Reference numeral 30 denotes the head of a hexagonal bolt or the hexagonal nut (hereinafter abbreviated as hexagonal portion) to be tightened or loosened. FIG. 5 shows that when the wrench of the present invention is to be hung on the hexagonal portion 30, the upper jaw 21 may be opened and moved in the direction of arrow D as shown. After the notch 22 of the upper jaw 21 is thus hooked on the hexagonal portion 30, the nut 15 is rotated to press the retainer 13 against one side of the hexagonal portion 30. Since you can grasp it firmly, you can work securely tightening or loosening it. The pressing surface of the presser foot 13 against the hexagonal portion 30 has a curved surface to some extent so as to correspond to the size of the hexagonal portion 30. Further, the receiving metal 16 receives the reaction force of the nut 15 when the pressing metal 13 is pressed against the hexagonal portion 30. Further, as shown in FIG. 6, when the angle K of the cutout portion 22 of the upper jaw 21 is slightly smaller than 60 °, the biting into the hexagonal portion 30 is better and the certainty is higher.

FIG. 7 shows the relationship between the retainer 13 and the screws 14 and nuts 15 achieved by another method. The presser foot of FIG. 1 corresponds to the presser foot of 43 and is different from the presser foot 13 in that a worm wheel type screw 44 is provided only on the right side of the drawing. Therefore, a worm type screw 45 is used as a screw that meshes with this. Reference numeral 46 is a pin, and a worm type screw is rotatably attached by this pin. Therefore, in order to suppress one side of the hexagonal portion 30, it is possible to rotate this worm type screw.

[0007]

[Effect of device]

 Since the present invention is constructed as described above, the hexagonal portion can be grasped more surely and the hexagonal portion can be easily tightened as compared with the conventional technique, so that the practical value thereof is extremely high.

[Brief description of drawings]

FIG. 1 is a side view of a universal wrench of the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a view on arrow B of FIG.

FIG. 4 is a view taken along the line C-C in FIG.

FIG. 5 is an explanatory view when the universal wrench of the present invention is hung on the hexagonal portion.

FIG. 6 is an explanatory view of an angle of a notch portion of an upper jaw in the present invention.

FIG. 7 is a view showing a screw provided on the retainer according to the present invention.
It is explanatory drawing regarding another structure.

[Explanation of symbols]

10 Lever 30 Hexagonal part 11 Supporting part of retainer 13 43 Retainer 12 Hole 44 Screw 13 Retainer 45 Worm type screw 14 Screw 46 pin 15 Nut 16 Receptacle 18 pin 21 Upper jaw 22 Notch 23 Upper jaw 21 one end

Claims (3)

[Scope of utility model registration request] 1. A lever and an upper jaw whose one end is pivotally attached to the lever with a pin, the upper jaw having a notch portion sandwiching two faces of a hexagonal portion, and sliding on a part of the lever. It has a retainer movably attached to the retainer, and a part of the retainer is a screw, and a nut is screwed to the screw so that one surface of the hexagonal portion can be pushed by rotating the insulator nut. A flexible wrench that is characterized by 2. The angle of the notch part sandwiching the two faces of the hexagonal part is 6
The adjustable wrench according to claim 1, wherein the angle is slightly less than 0 °. 3. A screw of a worm wheel type provided on one side of the presser plate as a screw for moving the presser plate pushing one side of the hexagonal part, and a worm type screw meshing with the screw is used. Free wrench described in 2.