Double-jaw monkey wrench

By introducing a lubrication mechanism and a limiting component into the double-jaw adjustable wrench, the problem of inconvenient adjustment caused by insufficient oil in the transmission mechanism is solved, enabling rapid adjustment and stability of the jaws, and improving work efficiency and service life.

CN224102834UActive Publication Date: 2026-04-10HANGZHOU HUAPU TOOL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU HUAPU TOOL TECH CO LTD
Filing Date
2025-04-17
Publication Date
2026-04-10

AI Technical Summary

Technical Problem

The transmission mechanism of existing double-jaw adjustable wrenches is prone to lubrication problems, which makes jaw adjustment inconvenient and affects work efficiency.

Method used

A lubrication mechanism and limiting components were designed. The jaws are driven to move by a bidirectional lead screw, and a liquid storage chamber and oil control components are set inside the jaws to realize automatic supply of lubricating oil, reduce wear, and improve adjustment stability and accuracy.

Benefits of technology

It enables rapid adjustment and stability of the jaws, increases the torque used, extends the service life of the wrench, and improves work efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224102834U_ABST
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Abstract

The utility model discloses a double-jaw monkey wrench which comprises a wrench body, one end of the wrench body is provided with a wrench cavity, one side of the wrench body is rotationally connected with a bidirectional lead screw, the two sides of the surface of the bidirectional lead screw are in threaded connection with movable jaws, and lubricating mechanisms are arranged in the two movable jaws. One end of the wrench body is provided with a lubricating mechanism, the other end of the wrench body is provided with an auxiliary cavity, the inside of the auxiliary cavity is connected with an auxiliary handle in a sliding mode, and one end of the surface of the wrench body is provided with a limiting assembly. When a transmission mechanism needs to be lubricated, internal lubricating oil can drop on the lead screw by pressing the oil control assembly, abrasion of the lead screw is reduced, the service life of the lead screw is prolonged, and the stability and accuracy of adjustment of the double jaws of the monkey wrench are improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of activity spanner, concretely is a double-jaw activity spanner. BACKGROUND

[0002] The double-jaw activity spanner is an improved tool based on the common activity spanner, which has two movable jaws and can be more flexible to adapt to fasteners of different sizes and shapes.

[0003] The double-jaw activity spanner of the prior art has two independent movable jaws, which are located at the two ends or other opposite positions of the spanner, and each jaw can be adjusted in opening degree through the respective adjusting mechanism.

[0004] The double-jaw activity spanner has a distance between the two jaws that can be adjusted at will, but long-term use makes the transmission mechanism inside the movable jaw prone to oil shortage or affected by the external environment, resulting in inconvenient adjustment of the jaw and greatly affecting the work efficiency of the staff. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a double-jaw activity spanner to solve the problem of the double-jaw activity spanner in the background art, which has a distance between the two jaws that can be adjusted at will, but long-term use makes the transmission mechanism inside the movable jaw prone to oil shortage or affected by the external environment, resulting in inconvenient adjustment of the jaw and greatly affecting the work efficiency of the staff.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a double-jaw activity spanner, comprising a spanner body, one end of the spanner body is provided with a jaw cavity, one side of the spanner body is rotationally connected with a bidirectional screw rod, the surface of the bidirectional screw rod is threadedly connected with movable jaws on both sides, the inside of the two movable jaws is provided with a lubricating mechanism, the other end of the spanner body is provided with an auxiliary cavity, the inside of the auxiliary cavity is slidably connected with an auxiliary handle, and one end of the surface of the spanner body is provided with a limiting assembly.

[0007] Preferably, one end of the bidirectional screw rod is fixedly connected with an adjusting handle, and one side of the movable jaw is provided with an antiskid layer.

[0008] Preferably, the limiting assembly comprises an adjusting hole, the adjusting hole is arranged on the spanner body, a limiting screw rod is threadedly connected in the inside of the adjusting hole, the surface of the auxiliary handle is provided with a plurality of limiting holes, and one end of the limiting screw rod is inserted into the inside of the limiting hole.

[0009] Preferably, the lubricating mechanism comprises an oil control assembly, a threaded hole is formed in the bottom of one side of the movable jaw, the threaded hole is threadedly connected with a bidirectional screw rod, a liquid outlet is formed in one side of the connection between the threaded hole and the movable jaw, a liquid storage cavity is formed in one side of the connection between the liquid outlet and the movable jaw, a pressing cavity is formed in one end of the connection between the liquid storage cavity and the movable jaw, and the oil control assembly is arranged inside the liquid storage cavity.

[0010] Preferably, the oil control assembly comprises a connecting hole plate, the connecting hole plate is arranged inside the liquid storage cavity, one side of the connecting hole plate is fixedly connected with a support frame, the support frame is slidably connected with an oil control rod inside, one end of the oil control rod is fixedly connected with a pressing rod, the other end of the oil control rod is fixedly connected with an oil outlet assembly, a reset spring is arranged on the surface of the oil control rod, the surface of the pressing rod is slidably connected with the inside of the pressing cavity, the other side of the connecting hole plate is fixedly connected with a silica gel valve head, one end of the surface of the oil control rod is fixedly connected with a spring plate, and one side of the spring plate is fixedly connected with one end of the reset spring.

[0011] Preferably, the oil outlet assembly comprises an oil outlet pipe, the oil outlet pipe is fixedly connected with the oil control rod, and a plurality of oil inlet holes are formed in one end of the oil outlet pipe.

[0012] Preferably, an oil injection hole is formed in one side of the connection between the liquid storage cavity and the movable jaw, and a rubber plug is arranged on one end of the inner wall of the oil injection hole.

[0013] Compared with the prior art, the utility model has the advantages that two jaws are driven to move by the bidirectional screw rod, and the two jaws move in the same direction or in the opposite direction, so that the jaws can be quickly adjusted to the appropriate position.

[0014] The auxiliary handle can be elongated, the use torque of the movable spanner is increased, and in some cases requiring large force, the auxiliary handle can be used to elongate the handle, so that the movable spanner is more labor-saving to use.

[0015] The lubricating mechanism is arranged in the inside of the jaw, the oil storage cavity is arranged in the inside of the jaw, the lubricating oil is injected into the inside, the oil control assembly is pressed when the transmission mechanism needs to be lubricated, the inside lubricating oil can be dropped on the screw rod, the abrasion of the screw rod is reduced, the service life of the screw rod is prolonged, and the stability and accuracy of the movable spanner double-jaw adjustment are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure diagram of the utility model double-jaw movable spanner.

[0017] Figure 2 It is a structure diagram of the utility model double-jaw movable spanner jaw assembly.

[0018] Figure 3The utility model discloses a double-jaw movable spanner control oil assembly structural diagram.

[0019] Figure 4 The utility model discloses a double-jaw movable spanner oil outlet pipe structural diagram.

[0020] In the drawing: 1, spanner body; 2, jaw cavity; 3, bidirectional screw rod; 4, adjusting handle; 5, auxiliary handle; 6, limiting hole; 7, oil injection hole; 8, limiting screw rod; 9, movable jaw; 10, antiskid layer; 11, liquid outlet; 12, liquid storage cavity; 13, pressing cavity; 14, oil inlet hole; 15, rubber plug; 16, connecting hole plate; 17, silica gel valve head; 18, support frame; 19, control oil stem; 20, pressing rod; 21, reset spring; 22, spring plate; 23, oil outlet pipe. Specific embodiments

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described in connection with the drawings in the embodiments of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a double-jaw movable spanner, including spanner body 1, the one end of spanner body 1 is seted up with jaw cavity 2, the one side of spanner body 1 is rotatably connected with bidirectional screw rod 3, both sides on the surface of bidirectional screw rod 3 are all screw -threaded with movable jaw 9, the inside of two movable jaws 9 all is provided with lubricating mechanism, the other end of spanner body 1 is seted up with auxiliary cavity, the inside of auxiliary cavity is slidably connected with auxiliary handle 5, and one end on the surface of spanner body 1 is provided with limiting component.

[0023] Please refer to Figure 1 Further, the limiting component includes an adjusting hole, which is arranged on the spanner body 1 and is internally screw-threaded with a limiting screw rod 8, the surface of the auxiliary handle 5 is provided with a plurality of limiting holes 6, and one end of the limiting screw rod 8 is inserted into the limiting hole 6.

[0024] When in use, we often encounter some nuts with rust marks and the like when using the movable spanner, and it is often difficult to unscrew the nuts in this case, therefore, according to the principle of lever, it can be known that the longer the moment is, the more labor can be saved when unscrewing the nuts, therefore, the limiting screw rod 8 can be unscrewed first, at this time, the auxiliary handle 5 is pulled outwards by a distance, the auxiliary handle 5 is longer than the length of the auxiliary cavity, therefore, the auxiliary handle 5 will have a part exposed to the outside, facilitating the pulling of the auxiliary handle 5, after the auxiliary handle 5 is pulled to a suitable position, the limiting hole 6 is aligned with the adjusting hole, and then the limiting screw rod 8 is screwed into the adjusting hole, the two sides of the auxiliary cavity are both provided with the adjusting hole, but the adjusting hole on one side is screw-threaded, the thread is screw-threaded with the end of the limiting screw rod 8, which is conducive to the quick disassembly of the limiting screw rod 8. Figure 2 ,Figure 3 And Figure 4 Further, one end of the bidirectional screw rod 3 is fixedly connected with an adjusting handle 4, and one side of the movable jaw 9 is provided with an anti-skid layer 10 , The lubricating mechanism comprises an oil control assembly, a threaded hole is formed in the bottom of one side of the movable jaw 9, the threaded hole is threadedly connected with the bidirectional screw rod 3, one side of the connection position between the threaded hole and the movable jaw 9 is provided with a liquid outlet 11, one side of the connection position between the liquid outlet 11 and the movable jaw 9 is provided with a liquid storage cavity 12, one end of the connection position between the liquid storage cavity 12 and the movable jaw 9 is provided with a pressing cavity 13, and the oil control assembly is arranged in the interior of the liquid storage cavity 12 , The oil control assembly comprises a connecting hole plate 16, the connecting hole plate 16 is arranged in the interior of the liquid storage cavity 12, one side of the connecting hole plate 16 is fixedly connected with a support frame 18, the support frame 18 is slidably connected with an oil control rod 19 in the interior, one end of the oil control rod 19 is fixedly connected with a pressing rod 20, the other end of the oil control rod 19 is fixedly connected with an oil outlet assembly, the surface of the oil control rod 19 is sleeved with a reset spring 21, the surface of the pressing rod 20 is slidably connected with the interior of the pressing cavity 13, the other side of the connecting hole plate 16 is fixedly installed with a silica gel valve head 17, one end of the surface of the oil control rod 19 is fixedly connected with a spring plate 22, and one side of the spring plate 22 is fixedly connected with one end of the reset spring 21 , The oil outlet assembly comprises an oil outlet pipe 23, the oil outlet pipe 23 is fixedly connected with the oil control rod 19, and a plurality of oil inlet holes 14 are formed in one end of the oil outlet pipe 23 , One side of the connection position between the liquid storage cavity 12 and the movable jaw 9 is provided with an oil injection hole 7, and one end of the inner wall of the oil injection hole 7 is provided with a rubber plug 15

[0025] In use, first we need to take off the rubber plug 15, at this time through the oil injection hole 7 into the liquid lubricating oil into the storage chamber 12 inside, the storage chamber 12 and the outlet 11 connecting hole connecting hole plate 16, the bottom of the connecting hole plate 16 is provided with silica gel valve head 17, therefore the lubricating oil is intercepted by silica gel valve head 17, at this time will not flow out, the one end of reset spring 21 is connected on the spring plate 22, the other end is fixedly connected on the support frame 18, at this time press the oil control rod 19 to move down, at this time the oil control rod 19 drives the spring plate 22 to move down, the support frame 18 is fixedly not moving, therefore the reset spring 21 is compressed, the pressing rod 20 slides inside the pressing chamber 13, there is a hole in the middle of the support frame 18, the oil control rod 19 slides inside the hole, therefore the oil control rod 19 can move more stably, when the oil control rod 19 moves down, drives the oil outlet pipe 23 to move down, at this time the oil outlet pipe 23 passes through the silica gel valve head 17 to reach the position of the outlet 11, at this time the lubricating oil in the storage chamber 12 enters the inside of the oil outlet pipe 23 through the oil inlet hole 14, in turn the lubricating oil drops on the double lead screw 3 through the oil outlet pipe 23, when the movable jaw 9 moves, the lubricating oil can be spread on the double lead screw 3, and the gap between the jaw and the screw will also be filled with lubricating oil, reducing friction and wear, making the use more smooth, also can prolong the service life of the wrench, the pressing rod 20 and the end of the movable jaw 9 are flush, therefore it will not affect the normal use of the wrench, the threads on the surface of the double lead screw 3 are opposite, the threads of the two movable jaws 9 are also corresponding, after lubrication, loosen the pressing rod 20, at this time the reset spring 21 resets the oil control rod 19 by its own elastic force, at this time the oil outlet pipe 23 resets, the silica gel valve head 17 seals the lubricating liquid again, a sealing mechanism is arranged at the connection between the pressing rod 20 and the pressing chamber 13, which can effectively prevent the lubricating oil from leaking.

[0026] In use, the embodiment of the present application adjusts the distance between the two movable jaws 9 through the double lead screw 3, which can quickly adjust to the appropriate position, the extension auxiliary mechanism is arranged, which is conducive to increasing the use torque of the adjustable wrench, in some cases requiring more force, the auxiliary handle 5 can be used to extend the handle, making the use more labor-saving, the lubricating mechanism is arranged inside the movable jaw 9, which is conducive to reducing the wear of the screw rod, improving the service life of the screw rod, and improving the stability and accuracy of the double jaw adjustment of the adjustable wrench.

[0027] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A double jawed adjustable spanner comprising a spanner body (1) characterised in that: One end of the wrench body (1) is provided with a jaw cavity (2), one side of the wrench body (1) is rotatably connected with a bidirectional screw rod (3), both sides of the surface of the bidirectional screw rod (3) are threadedly connected with movable jaws (9), the interiors of the two movable jaws (9) are provided with lubricating mechanisms, the other end of the wrench body (1) is provided with an auxiliary cavity, the interior of the auxiliary cavity is slidably connected with an auxiliary handle (5), and one end of the surface of the wrench body (1) is provided with a limiting assembly.

2. A dual jaw adjustable spanner according to claim 1 wherein: One end of the bidirectional screw rod (3) is fixedly connected with an adjusting handle (4), and one side of the movable jaw (9) is provided with an anti-skid layer (10).

3. A dual jaw adjustable wrench according to claim 1 wherein: The limiting assembly comprises an adjusting hole, the adjusting hole is arranged on the wrench body (1), the interior of the adjusting hole is threadedly connected with a limiting screw rod (8), the surface of the auxiliary handle (5) is provided with a plurality of limiting holes (6), and one end of the limiting screw rod (8) is inserted into the interior of the limiting hole (6).

4. The dual jaw adjustable wrench of claim 1 wherein: The lubricating mechanism comprises an oil control assembly, a threaded hole is formed in the bottom of one side of the movable jaw (9), the threaded hole is threadedly connected with the bidirectional screw rod (3), one side of the threaded hole, which is connected with the movable jaw (9), is provided with a liquid outlet (11), one side of the threaded hole, which is connected with the movable jaw (9), is provided with a liquid storage cavity (12), one end of the threaded hole, which is connected with the movable jaw (9), is provided with a pressing cavity (13), and the oil control assembly is arranged in the interior of the liquid storage cavity (12).

5. A dual jaw adjustable spanner according to claim 4 wherein: The oil control assembly comprises a connecting hole plate (16), the connecting hole plate (16) is arranged in the interior of the liquid storage cavity (12), one side of the connecting hole plate (16) is fixedly connected with a supporting frame (18), the interior of the supporting frame (18) is slidably connected with an oil control rod (19), one end of the oil control rod (19) is fixedly connected with a pressing rod (20), the other end of the oil control rod (19) is fixedly connected with an oil outlet assembly, the surface of the oil control rod (19) is sleeved with a reset spring (21), the surface of the pressing rod (20) is slidably connected with the interior of the pressing cavity (13), the other side of the connecting hole plate (16) is fixedly connected with a silica gel valve head (17), one end of the surface of the oil control rod (19) is fixedly connected with a spring plate (22), and one side of the spring plate (22) is fixedly connected with one end of the reset spring (21).

6. A dual jaw adjustable spanner according to claim 5 wherein: The oil outlet assembly comprises an oil outlet pipe (23), the oil outlet pipe (23) is fixedly connected with the oil control rod (19), and a plurality of oil inlet holes (14) are formed in one end of the oil outlet pipe (23).

7. A dual jaw adjustable spanner according to claim 4 wherein: One side of the threaded hole, which is connected with the movable jaw (9), is provided with an oil injection hole (7), and one end of the inner wall of the oil injection hole (7) is provided with a rubber plug (15).