TWI802392B - Lightweight adjustable wrench - Google Patents

Abstract

The present invention provides a lightweight adjustable wrench, which includes a body, a movable member, and a gasket. The body is provided with a fixed jaw and a jaw opening adjacent to the fixed jaw. The body is provided with a first side wall and a second side wall connected to the fixed jaw, and a sliding groove formed between the first and second side walls. The movable member is provided with a sliding portion and a movable jaw. The sliding portion is selectively slidably disposed in the sliding groove. The movable jaw protrudes out of the sliding groove. The hardness of the gasket is greater than that of the body. The gasket is provided with a clamping portion, a first supporting portion, and a second supporting portion. The clamping portion is connected to the fixed jaw. The first supporting portion is connected to the first side wall. The second supporting portion is connected to the second side wall. Thus, the adjustable wrench can maintain sufficient structural rigidity on the basis of reducing the weight thereof.

Description

lightweight monkey wrench

The present invention mainly discloses an adjustable wrench, especially a lightweight adjustable wrench.

Please refer to the Chinese patent No. M474598 "An adjustable wrench with a strengthening device" patent case, which is an adjustable wrench including a handle, a head, a movable jaw, an adjusting device and a strengthening device. The head is formed at one end of the handle and includes a fixed jaw, a chute, a receptacle, two side walls and two connecting parts, the chute communicates with the receptacle and is formed between the two side walls, Each connecting portion is formed at an end of each side wall away from the fixed jaw. The movable jaw is slidably arranged in the slide groove of the head and can move relative to the fixed jaw. The adjustment device is accommodated in the cavity of the head and includes a shaft and a worm wheel, the shaft passes through the worm wheel, and the worm wheel and the movable jaw are engaged with each other. The reinforcing device is connected between the two side walls of the head and fixed on the two connecting parts.

However, the basic structure of the above-mentioned adjustable wrench is the same as that of a general adjustable wrench. The handle, head and fixed jaw are made of an integrated structure. In order to make the adjustable wrench have sufficient structural rigidity and material hardness, the handle, head and The fixed jaw is made of steel, resulting in a rather heavy weight for the adjustable wrench.

In view of the lack of the above-mentioned conventional structure, the inventors have designed a lightweight adjustable wrench, which can overcome all the shortcomings of the above-mentioned conventional structure.

The main purpose of the lightweight adjustable wrench of the present invention is to provide an adjustable wrench comprising a body, a movable part and a gasket, the body is provided with a fixed jaw and a jaw adjacent to the fixed jaw, the One side of the fixed jaw adjacent to the mouth of the jaw is provided with a clamping surface, and the body is provided with a first side wall and a second side wall connected to the fixed jaw and is provided between the first side wall and the second side wall A chute, the first side wall is provided with a first abutment surface adjacent to the jaw opening, the second side wall is provided with a second abutment surface adjacent to the jaw opening, and the movable part is provided with a A sliding part and a movable jaw, the sliding part can be selectively slidably arranged in the chute, the movable jaw protrudes outside the chute, and the movable jaw can slide closer to the sliding part Or away from the fixed jaw, the jaw is set between the fixed jaw and the movable jaw, the material hardness of the gasket material is greater than the material hardness of the body material, the gasket is provided with a clamping part, a first support abutting portion and a second abutting portion, the clamping portion is connected to the clamping surface, the first abutting portion is connected to the first abutting surface, and the second abutting portion is connected to the second abutting surface , the adjustable wrench can maintain sufficient structural rigidity on the basis of reducing weight through the above structure.

The side of the first side wall adjacent to the chute is provided with a first card slot, and the side of the first side wall opposite to the chute is provided with a second card slot, the first card slot and the second card slot respectively connected to the first supporting surface, the second side wall is provided with a third locking groove on the side adjacent to the sliding groove, and the second side wall is provided with a fourth locking groove on the side opposite to the sliding groove. The third card slot and the fourth card slot are respectively connected to the second abutment surface, and one side of the first abutment part adjacent to the second abutment part protrudes with a first locking flange and the other side A second locking flange is protruded, the first locking flange is inserted into the first card slot, the second locking flange is inserted into the second card slot, and the second supporting portion is adjacent to One of the first supporting parts The side protrudes with a third locking flange and the other side protrudes with a fourth locking flange, the third locking flange is inserted into the third locking groove, and the fourth locking flange is inserted into the connected to the fourth card slot.

The side of the first side wall opposite to the chute is provided with a first hook groove, the first hook groove is connected to the side of the second locking groove adjacent to the fixed jaw and is not connected to the first supporting surface, The second side wall is provided with a second hook groove on the side opposite to the sliding groove, the second hook groove is connected to the side of the fourth locking groove adjacent to the fixed jaw and is not connected to the second supporting surface, The second locking flange is connected with a first protruding hook, and the first protruding hook is hooked in the first hook groove, and the fourth locking flange is connected with a second protruding hook, and the second protruding hook is hooked Fasten to the second hook groove.

The distance from the first clamping groove to the fixed jaw along the direction perpendicular to the clamping surface forms a first length, and the distance from the second clamping groove to the fixed jaw along the direction perpendicular to the clamping surface forms a second length, The first length is less than the second length, and the distance from the third locking groove to the fixed jaw along the direction perpendicular to the clamping surface forms a third length, the third length is greater than the first length and less than the second length , the distance from the fourth locking groove to the fixed jaw along the direction perpendicular to the clamping surface is equal to the second length.

The second locking groove is connected to the outer peripheral edge of the first side wall opposite to the fixed jaw, and the fourth locking groove is connected to the outer peripheral edge of the second side wall opposite to the fixed jaw.

The clamping portion is attached to the clamping surface in a surface contact manner, one side of the first supporting portion is attached to the first supporting surface in a surface contact manner, and one side of the second supporting portion is attached in a surface contact manner The second brace is against the face.

The washer is connected with a locking piece, and the locking piece passes through the clamping portion and is combined with the fixed jaw in a screw-locking manner.

The side of the first side wall adjacent to the mouth is provided with a first engaging surface, one end of the first engaging surface is connected to the clamping surface and the other end is connected to the first supporting surface, and the first engaging surface is The inclined plane that is neither perpendicular to the clamping surface nor perpendicular to the first supporting surface, the second side wall is provided with a second engaging surface adjacent to the jaw opening, and one end of the second engaging surface is connected to the clamping surface And the other end is connected to the second abutment surface, the second joint surface is an inclined plane that is neither perpendicular to the clamping surface nor perpendicular to the second abutment surface, and the gasket is provided with a first joint portion and a second abutment surface. An engaging part, one end of the first engaging part is connected to the clamping part and the other end is connected to the first propping part, and the first engaging part fits the first engaging surface in surface contact, and the second engaging part One end of the portion is connected to the clamping portion and the other end is connected to the second propping portion, and the second engaging portion is attached to the second engaging surface in a surface contact manner.

The side of the first side wall adjacent to the mouth is provided with a first engaging surface, one end of the first engaging surface is connected to the clamping surface and the other end is connected to the first supporting surface, and the second side wall is adjacent to the One side of the mouth is provided with a second engaging surface, one end of the second engaging surface is connected to the clamping surface and the other end is connected to the second supporting surface, the first engaging surface and the second engaging surface are respectively In a concave arc shape, the gasket is provided with a first connecting portion and a second connecting portion, one end of the first connecting portion is connected to the clamping portion and the other end is connected to the first supporting portion, and the The first engaging portion is attached to the first engaging surface in surface contact, one end of the second engaging portion is connected to the clamping portion and the other end is connected to the second propping portion, and the second engaging portion is in surface contact. Fit the second connecting surface in a manner.

The clamping portion, the first propping portion, the second propping portion, the first connecting portion and the second connecting portion are formed by sheet metal bending and are integrally formed.

Other objects, advantages and novelties of the present invention will be more apparent from the following detailed description and associated drawings.

10: Adjustable wrench

20: Ontology

21: fixed jaw

211: sandwich surface

22: jaw

23: First side wall

231: The first supporting surface

232: The first card slot

233: Second card slot

234: The first hook slot

235: The first connecting surface

24: Second side wall

241: The second supporting surface

242: The third card slot

243: The fourth card slot

244: Second hook slot

245: The second connecting surface

25: Chute

26: worm gear

30: Movable parts

31: sliding part

32: movable jaw

40: Gasket

41: clamping part

42: The first supporting part

421: the first locking flange

422: second latch flange

423: The first convex hook

43: The second supporting part

431: the third locking flange

432: the fourth locking flange

433: Second convex hook

44: Locking piece

45: The first joint

46: The second connecting part

20a: Ontology

211a: clamping surface

22a: jaw mouth

23a: first side wall

231a: The first supporting surface

235a: the first connecting surface

24a: Second side wall

241a: the second supporting surface

245a: the second connecting surface

27a: Button

30a: movable parts

40a: Gasket

41a: clamping part

42a: the first supporting part

43a: the second supporting part

45a: The first joint

46a: The second connecting part

L1: first length

L2: second length

L3: third length

Figure 1: It is the three-dimensional appearance view of the first embodiment of the lightweight adjustable wrench of the present invention.

Fig. 2: An exploded perspective view of the first embodiment of the lightweight adjustable wrench of the present invention.

Fig. 3: An exploded perspective view from another perspective of the first embodiment of the lightweight adjustable wrench of the present invention.

Fig. 4: is the cross-sectional structure diagram of the first embodiment of the lightweight adjustable wrench of the present invention.

Fig. 5: It is a cross-sectional structure diagram from another angle of view of the first embodiment of the lightweight adjustable wrench of the present invention.

Fig. 6: A three-dimensional appearance view of the second embodiment of the lightweight adjustable wrench of the present invention.

Fig. 7: An exploded perspective view of the second embodiment of the lightweight adjustable wrench of the present invention.

Regarding the technology, means and effects adopted by the present invention, two preferred embodiments are given and described in detail below with drawings, which are for illustration purposes only, and are not limited by this structure in the patent application.

Referring to Fig. 1 to Fig. 5, it is a three-dimensional appearance view, three-dimensional exploded view and cross-sectional structure view of the first embodiment of the lightweight adjustable wrench of the present invention. The adjustable wrench 10 of the present invention includes a body 20, a movable part 30 and a gasket 40; wherein: the body 20 is provided with a fixed jaw 21 and a jaw opening 22 adjacent to the fixed jaw 21, the fixed jaw 21 One side adjacent to the jaw 22 is provided with a clamping surface 211, and the body 20 is provided with a first side wall 23 and a second side wall 24 connected to the fixed jaw 21 and between the first side wall 23 and the second side wall. A chute 25 is provided between the side walls 24 , a first abutment surface 231 is provided on a side of the first side wall 23 adjacent to the jaw opening 22 , and a first abutting surface 231 is provided on a side adjacent to the jaw opening 22 of the second side wall 24 . The second supporting surface 241 .

The movable part 30 is provided with a sliding part 31 and a movable jaw 32, the sliding part 31 is selectively slidably disposed in the chute 25, the movable jaw 32 protrudes outside the chute 25, and The movable jaw 32 can approach or move away from the fixed jaw 21 as the sliding part 31 slides, and the jaw opening 22 is disposed between the fixed jaw 21 and the movable jaw 32 .

The material hardness of the gasket 40 is greater than the material hardness of the body 20, and the gasket 40 is provided with a clamping portion 41, a first supporting portion 42 and a second supporting portion 43, the clamping portion 41 Connected to the clamping surface 211 , the first supporting portion 42 is connected to the first supporting surface 231 , and the second supporting portion 43 is connected to the second supporting surface 241 .

The side of the first side wall 23 adjacent to the sliding groove 25 is provided with a first locking groove 232, and the side of the first side wall 23 opposite to the sliding groove 25 is provided with a second locking groove 233, the first locking groove 232 and the second slot 233 are respectively connected to the first supporting surface 231, the second side wall 24 is provided with a third slot 242 on one side adjacent to the slide slot 25, and the second side wall 24 is opposite to the slide slot 25. One side of the groove 25 is provided with a fourth locking groove 243, the third locking groove 242 and the fourth locking groove 243 are respectively connected to the second supporting surface 241, and the first supporting part 42 is adjacent to the second supporting surface. One side of the contact portion 43 is protruded with a first locking flange 421 and the other side is protruded with a second locking flange 422 , the first locking flange 421 is inserted into the first locking groove 232 , the second locking flange 422 is inserted into the second locking groove 233, and the side of the second supporting portion 43 adjacent to the first supporting portion 42 is provided with a third locking flange 431 and another A fourth engaging flange 432 protrudes from one side, the third engaging flange 431 is inserted into the third engaging slot 242 , and the fourth engaging flange 432 is inserted into the fourth engaging slot 243 .

The side of the first side wall 23 opposite to the sliding groove 25 is provided with a first hook groove 234, the first hook groove 234 is connected to the side of the second locking groove 233 adjacent to the fixed jaw 21 and is not connected to the The first supporting surface 231, the second side wall 24 is provided with a second hook groove 244 on the side opposite to the slide groove 25, the The second hook groove 244 is connected to the side of the fourth locking groove 243 adjacent to the fixed jaw 21 and is not connected to the second abutting surface 241 . The second locking flange 422 is connected to a first protruding hook 423 , The first protruding hook 423 is hooked in the first hooking groove 234 , the fourth engaging flange 432 is connected with a second protruding hook 433 , and the second protruding hook 433 is hooked in the second hooking groove 244 .

The distance from the first slot 232 to the fixed jaw 21 in the direction perpendicular to the clamping surface 211 forms a first length L1, and the second slot 233 extends to the fixed jaw 21 in the direction perpendicular to the clamping surface 211. The distance forms a second length L2, the first length L1 is smaller than the second length L2, the distance from the third locking groove 242 to the fixed jaw 21 along the direction perpendicular to the clamping surface 211 forms a third length L3, the The third length L3 is greater than the first length L1 and less than the second length L2, and the distance from the fourth engaging groove 243 to the fixed jaw 21 along the direction perpendicular to the clamping surface 211 is equal to the second length L2.

The second locking slot 233 is connected to the outer peripheral edge of the first side wall 23 opposite to the fixed jaw 21 , and the fourth locking slot 243 is connected to the outer peripheral edge of the second side wall 24 opposite to the fixed jaw 21 .

The clamping portion 41 is attached to the clamping surface 211 in a surface contact manner, one side of the first supporting portion 42 is attached to the first supporting surface 231 in a surface contacting manner, and one side of the second supporting portion 43 is The second abutting surface 241 is attached in a surface contact manner.

The washer 40 is connected with a locking piece 44 , and the locking piece 44 passes through the clamping portion 41 and is screwed to the fixed jaw 21 .

The first side wall 23 is provided with a first engagement surface 235 adjacent to the jaw opening 22 , one end of the first engagement surface 235 is connected to the clamping surface 211 and the other end is connected to the first supporting surface 231 , The first engaging surface 235 is an inclined surface that is neither perpendicular to the clamping surface 211 nor perpendicular to the first abutting surface 231 , and a second engaging surface 245 is provided on the side of the second side wall 24 adjacent to the mouth 22 . One end of the second engaging surface 245 is connected to the clamping surface 211 and the other end is connected to the second abutting surface 241. The surface 245 is an inclined plane that is neither perpendicular to the clamping surface 211 nor perpendicular to the second abutting surface 241, and the gasket 40 is provided with a first engaging portion 45 and a second engaging portion 46, the first engaging portion 45 One end is connected to the clamping portion 41 and the other end is connected to the first supporting portion 42, and the first engaging portion 45 is attached to the first engaging surface 235 in a surface contact manner, and one end of the second engaging portion 46 is connected to The other end of the clamping portion 41 is connected to the second supporting portion 43 , and the second engaging portion 46 is attached to the second engaging surface 245 in a surface contact manner.

The clamping portion 41 , the first supporting portion 42 , the second supporting portion 43 , the first connecting portion 45 and the second connecting portion 46 are formed by bending sheet metal and are integrally formed.

The material hardness of the movable part 30 is greater than that of the body 20 .

The main body 20 is provided with a worm wheel 26 , and the rotation of the worm wheel 26 can drive the movable part 30 to move and make the movable jaw 32 approach or move away from the fixed jaw 21 .

Through the above structure, the adjustable wrench 10 can maintain sufficient structural rigidity on the basis of lightening the weight, so as to prevent the fixed jaw 21 from being dented and damaged due to extrusion during operation. The main body 20 can be made of a material with sufficient tensile strength and bending strength but low density. For example, the material of the main body 20 can be aluminum alloy, and the material of the movable part 30 and the gasket 40 can be It is steel, although the hardness of the material of the main body 20 is not as good as that of the movable part 30 or the pad 40, under the apportionment and buffering of the pad 40, the adjustable wrench 10 will not cause any The main body 20 is squeezed and deformed by the work object, and the weight of the adjustable wrench 10 is finally reduced.

Referring to Fig. 6 and Fig. 7, it is a three-dimensional appearance view and three-dimensional exploded view of the second embodiment of the lightweight adjustable wrench of the present invention. The second embodiment of this case is substantially the same as the first embodiment, the main difference is that a first engaging surface 235a is provided on the side of the first side wall 23a adjacent to the mouth 22a, and one end of the first engaging surface 235a is connected to The other end of the clamping surface 211a is connected to the first abutting surface 231a, and the second side wall 24a is provided with a second engaging surface 245a adjacent to the jaw opening 22a. The second engaging surface One end of 245a is connected to the clamping surface 211a and the other end is connected to the second supporting surface 241a, the first engaging surface 235a and the second engaging surface 245a are respectively concave arc-shaped, and the gasket 40a is provided with a The first engaging portion 45a and a second engaging portion 46a, one end of the first engaging portion 45a is connected to the clamping portion 41a and the other end is connected to the first supporting portion 42a, and the first engaging portion 45a faces One end of the second connecting portion 46a is connected to the clamping portion 41a and the other end is connected to the second supporting portion 43a, and the second connecting portion 46a is in surface contact. Fit the second engaging surface 245a.

The main body 20a is provided with a dial button 27a, and the dial button 27a can selectively switch positions and limit the movement of the movable part 30a or enable the movable part 30a to move relative to the main body 20a.

With regard to the above, it can be concluded that the present invention has the following advantages:

1. It is a lightweight adjustable wrench of the present invention, wherein the adjustable wrench includes a body, a movable part and a gasket, the body is provided with a fixed jaw and a jaw adjacent to the fixed jaw, the fixed jaw is adjacent to One side of the jaw is provided with a clamping surface, the body is provided with a first side wall and a second side wall connected to the fixed jaw, and a chute is provided between the first side wall and the second side wall , the side of the first side wall adjacent to the jaw is provided with a first abutment surface, the side of the second side wall adjacent to the jaw is provided with a second abutment surface, and the movable part is provided with a sliding part and a movable jaw, the sliding part can be selectively slidably arranged in the chute, the movable jaw protrudes outside the chute, and the movable jaw can move closer to or away from the sliding part along with the sliding part The fixed jaw, the jaw opening is arranged between the fixed jaw and the movable jaw, the material hardness of the gasket material is greater than the material hardness of the body material, and the gasket is provided with a clamping part, a first supporting part and A second supporting part, the clamping part is connected to the clamping surface, the first supporting part is connected to the first supporting surface, the second supporting part is connected to the second supporting surface, the movable Through the above-mentioned structure, the wrench can maintain sufficient structural rigidity on the basis of reducing weight.

However, the above is only a preferred embodiment of the present invention, and should not be used to limit the implementation scope of the present invention, so all changes in numerical values or replacement of equivalent elements, or equivalents made according to the patent scope of the present invention Changes and modifications should still fall within the category covered by the patent of the present invention.

10: Adjustable wrench

20: Ontology

21: fixed jaw

22: jaw

23: First side wall

25: Chute

26: worm gear

30: Movable parts

32: movable jaw

40: Gasket

41: clamping part

42: The first supporting part

43: The second supporting part

44: Locking piece

45: The first joint

46: The second connecting part

Claims (9)

A lightweight adjustable wrench, which includes: a body, the body is provided with a fixed jaw and a jaw opening adjacent to the fixed jaw, and the side of the fixed jaw adjacent to the jaw opening is provided with a clamping surface, The body is provided with a first side wall and a second side wall connected to the fixed jaw, and a sliding slot is provided between the first side wall and the second side wall, and the first side wall is provided on a side adjacent to the jaw mouth There is a first abutment surface, and a second abutment surface is provided on the side of the second side wall adjacent to the jaw opening; a movable part is provided with a sliding part and a movable jaw, and the sliding part It can be selectively slidably arranged in the chute, the movable jaw protrudes outside the chute, and the movable jaw can slide close to or away from the fixed jaw with the sliding part, and the jaw is set on the Between the fixed jaw and the movable jaw; a gasket, the material hardness of the gasket material is greater than the material hardness of the body material, and the gasket is provided with a clamping part, a first supporting part and a second supporting part part, the clamping part is connected to the clamping surface, the first supporting part is connected to the first supporting surface, and the second supporting part is connected to the second supporting surface. The lightweight adjustable wrench according to claim 1, wherein the first side wall is provided with a first locking groove on the side adjacent to the chute, and the first side wall is provided with a second slot on the side opposite to the chute. a card slot, the first card slot and the second card slot are respectively connected to the first abutment surface, a third card slot is provided on a side of the second side wall adjacent to the sliding slot, and the second side wall is opposite to the One side of the chute is provided with a fourth card slot, the third card slot and the fourth card slot are respectively connected to the second supporting surface, and the first supporting part is adjacent to one side of the second supporting part There is a first locking flange protruding and a second locking flange protruding from the other side. The first locking flange is inserted into the first card slot, and the second locking flange is inserted into the In the second card slot, a third locking flange protrudes from one side of the second supporting part adjacent to the first supporting part and the other A fourth latching flange is provided on the side protrusion, the third latching flange is inserted into the third latching slot, and the fourth latching flange is inserted into the fourth latching slot. The lightweight adjustable wrench as described in claim 2, wherein the first side wall is provided with a first hook groove on the side opposite to the chute, and the first hook groove is connected to the second hook groove adjacent to the fixed jaw One side of the side wall is not connected to the first supporting surface, the second side wall is provided with a second hook groove on the side opposite to the sliding groove, and the second hook groove is connected to the fourth locking groove adjacent to the fixed jaw One side and not connected to the second supporting surface, the second locking flange is connected with a first protruding hook, the first protruding hook is buckled in the first hook groove, and the fourth locking flange A second protruding hook is connected, and the second protruding hook is buckled in the second hook groove. The lightweight adjustable wrench according to claim 3, wherein the distance from the first clamping groove to the fixed jaw along the direction perpendicular to the clamping surface forms a first length, and the second clamping groove is along the direction perpendicular to the clamping surface The distance from the direction to the fixed jaw forms a second length, the first length is smaller than the second length, the distance from the third locking groove to the fixed jaw along the direction perpendicular to the clamping surface forms a third length, the The third length is greater than the first length and less than the second length, and the distance from the fourth engaging groove to the fixed jaw along the direction perpendicular to the clamping surface is equal to the second length. The lightweight adjustable wrench according to any one of claims 2 to 4, wherein the second slot is connected to the outer peripheral edge of the first side wall opposite to the end of the fixed jaw, and the fourth slot is connected to the first side wall The two side walls are opposite to the outer peripheral edge of one end of the fixed jaw. The lightweight adjustable wrench according to any one of claims 1 to 4, wherein the washer is connected with a locking piece, and the locking piece passes through the clamping portion and is screw-locked to the fixed jaw . The lightweight adjustable wrench according to any one of Claims 1 to 4, wherein the side of the first side wall adjacent to the jaw is provided with a first engaging surface, and one end of the first engaging surface is connected to the clip joint surface and the other end is connected to the first supporting surface, the first joint surface is not vertical and the clamping surface is not vertical Straight to the slope of the first supporting surface, the second side wall is provided with a second engaging surface adjacent to the jaw opening, one end of the second engaging surface is connected to the clamping surface and the other end is connected to the second The supporting surface, the second engaging surface is an inclined plane that is neither perpendicular to the clamping surface nor perpendicular to the second supporting surface, and the gasket is provided with a first engaging portion and a second engaging portion, the first engaging portion One end of the connecting part is connected to the clamping part and the other end is connected to the first propping part, and the first connecting part fits the first connecting surface in a surface contact manner, and one end of the second connecting part is connected to the clamping part. part and the other end is connected to the second abutting part, and the second connecting part is attached to the second connecting surface in a surface contact manner. The lightweight adjustable wrench according to any one of Claims 1 to 4, wherein the side of the first side wall adjacent to the jaw is provided with a first engaging surface, and one end of the first engaging surface is connected to the clip One end of the second joint surface is connected to the clamping surface and the other end is connected to the joint surface. On the second supporting surface, the first connecting surface and the second connecting surface are respectively concave arc-shaped, and the gasket is provided with a first connecting part and a second connecting part, and one end of the first connecting part connected to the clamping portion and the other end is connected to the first propping portion, and the first engaging portion fits the first engaging surface in surface contact, one end of the second engaging portion is connected to the clamping portion and The other end is connected to the second propping portion, and the second engaging portion adheres to the second engaging surface in a surface contact manner. The lightweight adjustable wrench according to any one of claims 1 to 4, wherein the clamping portion, the first supporting portion, the second supporting portion, the first connecting portion and the second connecting portion It is formed by sheet metal bending and has a one-piece structure.

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