CN216229090U - Monkey wrench capable of bearing high torque value - Google Patents

Abstract

The utility model discloses an adjustable wrench capable of bearing a high torque value, and belongs to the technical field of hardware tools. In the adjustable wrench bearing the high torque value, the side part of the adjustable wrench opening is provided with a clamping surface S2, the sliding direction of the adjustable wrench opening departing from the fixed wrench opening is the positive X direction, the included angle between the clamping surface S2 and the positive X direction is alpha, and the alpha is selected from 45 degrees to 88 degrees. The adjustable wrench bearing high torque value provided by the utility model has the advantages of simple structure, reasonable design and easiness in manufacturing, and the angle of the clamping surface of the adjustable wrench opening is changed to reduce the tensile force borne by the flat rib part of the adjustable wrench under the condition of bearing the same torque, so that the flat rib part is prevented from being broken, the torque value borne by the adjustable wrench is improved, and the service life of the adjustable wrench is prolonged.

Description

Monkey wrench capable of bearing high torque value

Technical Field

The utility model relates to an adjustable wrench capable of bearing a high torque value, and belongs to the technical field of hardware tools.

Background

The adjustable wrench is a common hardware tool, and is provided with the fixed mouth of pulling and the activity mouth of pulling that is used for the centre gripping work piece on the adjustable wrench, and the activity is pulled the mouth and can be moved along the spout orientation or deviate from fixed mouth of pulling to the distance between fixed mouth of pulling and the activity mouth of pulling is pulled in the adjustment, makes the adjustable wrench can press from both sides the work piece of tight not unidimensional and screw or unscrew the operation. Generally, the movable spanner opening is composed of a clamping portion, a flat rib portion and a columnar portion, wherein the clamping portion is provided with a clamping surface capable of being matched with the fixed spanner opening, the bottom of the columnar portion is provided with a tooth-shaped structure, the tooth-shaped structure is meshed with a worm wheel, and the worm wheel rotates to drive the movable spanner opening to move. When the workpiece is screwed, the clamping part and the columnar part of the movable spanner opening bear corresponding moments respectively, and the flat rib part is connected between the clamping part and the columnar part, so that the flat rib part bears great force, and the thickness of the flat rib part is thin, so that the flat rib part is easy to damage. When a torque test is carried out on the monkey wrench in the market, the flat rib part of the monkey wrench opening begins to be damaged when the torque value of the standard is basically reached, and the service life of the monkey wrench is seriously influenced.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems in the prior art, provides the adjustable wrench capable of bearing high torque value, improves the torque value which can be borne by the adjustable wrench, and prevents the flat rib part from being broken.

The utility model adopts the following technical scheme to realize the purpose:

the utility model provides an adjustable wrench capable of bearing high torque value, which comprises a wrench body, wherein the head part of the wrench body is provided with:

the inner end of the fixed spanner opening is integrally connected with the head of the spanner body, and the side part of the fixed spanner opening is provided with a clamping surface S1;

the inner end of the movable spanner opening is connected with the head of the spanner body in a linear sliding mode, a clamping surface S2 is arranged on the side portion of the movable spanner opening, and the clamping surface S2 and the clamping surface S1 are arranged oppositely;

the adjusting assembly is used for driving the movable spanner opening to slide towards and away from the fixed spanner opening along the X direction so as to change the distance between the clamping surface S1 and the clamping surface S2;

the sliding direction of the movable spanner opening departing from the fixed spanner opening is a positive X direction, the included angle between the clamping surface S2 and the positive X direction is alpha, and the alpha is 45-88 degrees.

Optionally, α is taken from 60 ° -85 °.

Preferably, α is taken from 70 ° to 80 °.

Further, the clamping surface S1 is disposed parallel to the clamping surface S2.

Specifically, the movable jaw consists of a clamping part, a flat rib part and a columnar part, and the diameter of the columnar part is larger than the thickness of the flat rib part;

the adjusting component comprises a tooth-shaped structure arranged on the columnar part, and a sliding chute, a through hole, a worm wheel shaft and a shaft hole which are arranged at the head part of the wrench body;

the sliding groove is formed in the head of the wrench body and extends in the X direction, the flat rib part and the columnar part of the movable wrench opening are respectively arranged on the upper part and the lower part of the sliding groove in a sliding mode, and the width of the upper part of the sliding groove is smaller than that of the lower part of the sliding groove;

the through hole is communicated with the bottom surface of the sliding groove, and the shaft hole extends along the X direction and penetrates through the through hole; the worm wheel is arranged in the through hole, the central hole of the worm wheel is arranged along the X direction, and two ends of the worm wheel shaft penetrate through the central hole of the worm wheel and extend into the shaft hole.

The beneficial effects of the utility model include but are not limited to:

the adjustable wrench bearing high torque value provided by the utility model has the advantages of simple structure, reasonable design and easiness in manufacturing, and the angle of the clamping surface of the adjustable wrench opening is changed to reduce the tensile force borne by the flat rib part of the adjustable wrench under the condition of bearing the same torque, so that the flat rib part is prevented from being broken, the torque value borne by the adjustable wrench is improved, and the service life of the adjustable wrench is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural view of a conventional wrench (the direction of the horizontal right arrow in the figure is the positive X direction);

FIG. 2 is a schematic structural diagram of a spanner wrench of the present invention for withstanding high torque values;

FIG. 3 is an enlarged schematic view of a portion of the structure of FIG. 2;

FIG. 4 is an enlarged view of the movable jaw;

FIG. 5 is an enlarged view of the wrench body and the fixed jaw;

in the figure, 100, the wrench body; 110. fixing a spanner opening; 120. a movable jaw; 121. a clamping portion; 122. A flat rib portion; 123. a columnar portion; 124. a tooth-shaped structure; 210. a chute; 220. a through hole; 230. a worm gear; 240. a worm gear shaft; 250. and the shaft hole.

Detailed Description

In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein. Therefore, the scope of the utility model is not limited by the specific embodiments disclosed below.

The utility model provides an adjustable wrench capable of bearing high torque value, which comprises a wrench body 100, wherein the head of the wrench body 100 is provided with a fixed wrench opening 110 and an adjustable wrench opening 120.

Specifically, the inner end of the fixed jaw 110 is integrally connected with the head of the wrench body 100, and the side of the fixed jaw 110 is provided with a clamping surface S1; the inner end of the adjustable spanner opening 120 is connected with the head of the spanner body 100 in a linear sliding manner, the side of the adjustable spanner opening 120 is provided with a clamping surface S2, and the clamping surface S2 and the clamping surface S1 are oppositely arranged to form a clamping opening.

The adjustable spanner opening 120 can slide towards and away from the fixed spanner opening 110 along the X direction to change the distance between the clamping surface S1 and the clamping surface S2, so as to adjust the size of the clamping opening of the adjustable spanner, and the adjustable spanner is further provided with an adjusting component for driving the adjustable spanner opening 120 to move.

For convenience of description, the sliding direction of the movable wrench mouth 120 away from the fixed wrench mouth 110 is defined as a positive X direction, and the included angle between the clamping surface S2 and the positive X direction is defined as α. In the conventional wrench, the included angle between the clamping surface S2 and the positive X direction is 90 degrees, the included angle alpha between the clamping surface S2 of the adjustable spanner opening 120 and the positive X direction is adjusted to be 45-88 degrees, and after a large number of experiments, the adjustable spanner opening 120 is verified to be not easy to damage in the included angle range, and the adjustable wrench has high use flexibility.

In a preferred embodiment, α is taken from 60 ° to 85 °; more preferably, α is taken from 70 ° to 80 °.

The adjustable wrench is mainly applied to hexagonal workpieces, and in order to have a sufficiently large contact area with the surface of the workpiece, the clamping surface S1 on the fixed wrench opening 110 and the clamping surface S2 on the movable wrench opening 120 are preferably arranged in parallel.

In one embodiment, the adjustable spanner opening 120 is composed of a clamping portion 121, a flat rib portion 122 and a column portion 123, and the diameter of the column portion 123 is larger than the thickness of the flat rib portion 122.

Specifically, the adjusting assembly includes a tooth-shaped structure 124 disposed on the column portion 123, and a sliding slot 210, a through hole 220, a worm wheel 230, a worm wheel shaft 240 and a shaft hole 250 disposed on the head portion of the wrench body 100. The sliding groove 210 is provided at the head of the wrench body 100, the sliding groove 210 extends along the X direction, the flat rib portion 122 and the column portion 123 of the movable wrench opening 120 are respectively slidably provided at the upper portion and the lower portion of the sliding groove 210, and the upper portion of the sliding groove 210 has a groove width smaller than the lower portion of the sliding groove 210. The through hole 220 communicates with the bottom surface of the chute 210, and the shaft hole 250 extends in the X direction and penetrates the through hole 220. The worm wheel 230 is disposed in the through hole 220, a center hole of the worm wheel 230 is disposed in the X direction, and both ends of the worm wheel shaft 240 pass through the center hole of the worm wheel 230 and extend into the shaft holes 250. When the size of the clamping opening needs to be adjusted, the worm wheel 230 is rotated to drive the movable wrench opening 120 engaged with the worm wheel to move along the X direction.

It should be noted that, the present invention is not limited to the specific structure of the adjustable wrench, and for example, the fixed jaw 110 and the wrench body 100 are integrally formed by casting, welding or fixedly connecting, which all fall into the protection scope of the present invention.

The applicant of the present invention actually tested the stress condition of the adjustable wrench when the clamping surface S2 'is perpendicular to the X direction and the inclination angle of the clamping surface S2 with respect to the clamping surface S2' in the positive X direction is θ, and the test results are as follows:

dimensions of each monkey wrench sample tested: 255.5-256.0mm for total length, 16.2-16.6mm for head thickness, and head width: 86.3-86.5mm, the thickness of the handle part is 12.8-13.0mm, and the width of the handle part is 31.9-32.0 mm;

testing the used instrument: torsion tester FM 0901;

the execution standard is as follows: american Society of Mechanical Engineers (ASME) B107.100-2020 (Category 8Adjustable Wrench);

ASME standard torque is more than or equal to 508 N.m;

TABLE 1 relationship between maximum torque and theta experienced by monkey wrench

Sample (I)	Theta range	Bear maximum torque
			1	10°	1.7 times ASME standard torque
2	15°	2.0 times ASME standard torque
			3	20°	2.4 times ASME standard torque

From the above table, it can be seen that the maximum torque value experienced by the spanner wrench increases with increasing θ within the selected test range.

In the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," "axial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The above-mentioned embodiments should not be construed as limiting the scope of the present invention, and any alternative modifications or alterations made to the embodiments of the present invention will fall within the scope of the present invention as those skilled in the art will appreciate.

The present invention is not described in detail, but is known to those skilled in the art.

Claims (5)

1. The utility model provides a bear monkey spanner of high torque value which characterized in that, includes the spanner body, the head of spanner body is provided with:

the inner end of the fixed spanner opening is integrally connected with the head of the spanner body, and the side part of the fixed spanner opening is provided with a clamping surface S1;

the inner end of the movable spanner opening is connected with the head of the spanner body in a linear sliding mode, a clamping surface S2 is arranged on the side portion of the movable spanner opening, and the clamping surface S2 and the clamping surface S1 are arranged oppositely;

the adjusting assembly is used for driving the movable spanner opening to slide towards and away from the fixed spanner opening along the X direction so as to change the distance between the clamping surface S1 and the clamping surface S2;

the sliding direction of the movable spanner opening departing from the fixed spanner opening is a positive X direction, the included angle between the clamping surface S2 and the positive X direction is alpha, and the alpha is 45-88 degrees.

2. A spanner wrench of the kind described in claim 1, characterised in that α is taken from 60 ° -85 °.

3. Monkey wrench withstanding high torque values according to claim 1, characterized in that α is taken from 70 ° -80 °.

4. The high torque capacity impact wrench of claim 1, wherein the clamping surfaces S1 are disposed parallel to the clamping surfaces S2.

5. The adjustable wrench capable of bearing high torque values as claimed in claim 1, wherein the adjustable jaw is composed of a clamping portion, a bead portion and a column portion, and the diameter of the column portion is larger than the thickness of the bead portion;

the adjusting component comprises a tooth-shaped structure arranged on the columnar part, and a sliding chute, a through hole, a worm wheel shaft and a shaft hole which are arranged at the head part of the wrench body;

the sliding groove is formed in the head of the wrench body and extends in the X direction, the flat rib part and the columnar part of the movable wrench opening are respectively arranged on the upper part and the lower part of the sliding groove in a sliding mode, and the width of the upper part of the sliding groove is smaller than that of the lower part of the sliding groove;

the through hole is communicated with the bottom surface of the sliding groove, and the shaft hole extends along the X direction and penetrates through the through hole; the worm wheel is arranged in the through hole, the central hole of the worm wheel is arranged along the X direction, and two ends of the worm wheel shaft penetrate through the central hole of the worm wheel and extend into the shaft hole.

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