A wrench with a force-saving lever structure

Abstract

This utility model provides a wrench with a force-saving lever structure, relating to the field of hardware tool technology, including: a connecting wrench and a force-saving structure; one end of the connecting wrench is provided with a force-saving structure, which includes the following components: a connecting bracket: fixedly connected to one end of the connecting wrench, the connecting bracket having a pin hole; a fixing block: disposed between the connecting brackets, one end of the fixing block being fixedly connected to a wrench cap; a threaded rod: installed between the connecting bracket and the fixing block; a connecting cap: fixedly connected to the other end of the connecting wrench, the connecting cap having a handle fixedly connected to it, the outside of the handle being fitted with an anti-slip sleeve. By setting up the force-saving structure, which adopts the lever principle, the force applied to the wrench is amplified by the lever principle, which can effectively reduce the labor intensity of the operator, making it easier to tighten larger or tighter bolts and nuts, improving work efficiency, and further reducing labor intensity.

Description

Technical Field

[0001] This utility model belongs to the field of hardware tool technology, and more specifically, it relates to a wrench with a force-saving lever structure. Background Technology

[0002] As a common type of hardware tool, the core function of a wrench is to tighten bolts and nuts. Traditional wrenches have a relatively simple structure, mainly consisting of the wrench body and the jaws. When using a wrench, the operator holds one end of the wrench body and applies force to it, using the clamping force of the jaws on the bolt or nut to complete the tightening operation.

[0003] Based on the above, when dealing with large or tightly secured bolts and nuts, traditional wrenches not only require operators to apply significant force, but also necessitate frequent adjustments to the contact position between the jaws and the workpiece due to the limited angle of each tightening operation. This repetitive adjustment process increases physical exertion and severely slows down the work pace, resulting in a significant decrease in overall work efficiency. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model relates to a wrench with a force-saving lever structure. This addresses the issue that traditional wrenches, when dealing with large or tightly secured bolts and nuts, require operators to apply significant force and frequently adjust the contact position between the jaws and the workpiece. By incorporating a force-saving structure that utilizes the lever principle to amplify the force applied to the wrench, the operator's workload is effectively reduced. This allows for easier tightening of larger or tighter bolts and nuts, improving work efficiency and further reducing labor intensity.

[0005] This utility model discloses a wrench with a force-saving lever structure, achieved through the following specific technical means:

[0006] A wrench with a force-saving lever structure, specifically comprising: a connecting wrench and a force-saving structure;

[0007] One end of the connecting wrench is provided with a force-saving structure, which includes the following components:

[0008] Connecting bracket: It is fixedly connected to one end of the connecting wrench, and the connecting bracket has a pin hole;

[0009] Fixed support block: Located between the connecting brackets, with a wrench cap fixedly connected to one end of the fixed support block;

[0010] Threaded rod: Installed between the connecting bracket and the fixed support block;

[0011] Connecting cap: It is fixedly connected to the other end of the connecting wrench. A handle is fixedly connected to the connecting cap, and an anti-slip sleeve is fitted on the outside of the handle.

[0012] Furthermore, a splitting assembly is provided at the connection bracket and the fixed support block. The splitting assembly includes a rotating shaft groove, a connecting shaft collar, and a rotating screw ring. The bottom of the connection bracket has a rotating shaft groove, and the connecting shaft collar is rotatably installed inside the rotating shaft groove. The bottom of the connecting shaft collar is fixedly connected to a rotating screw ring.

[0013] Furthermore, a threaded hole is provided in the middle of the rotating screw ring, the threaded hole is engaged with the threaded rod, and anti-slip texture is provided on the outer side of the rotating screw ring.

[0014] Furthermore, a limiting insert is fixedly connected to the outer side of the middle part of the threaded rod, and a limiting cross groove is opened on the connecting bracket and the fixed support block. The limiting insert is fitted into the limiting cross groove, and a pressing arc plate is fixedly connected to one end of the top of the threaded rod.

[0015] Furthermore, the top of the connecting bracket is provided with a limiting pressure ring, on which a through groove is opened, and at the same time, a clamping groove intersecting with the through groove is also opened on the limiting pressure ring.

[0016] Furthermore, the clamping arc plate is fitted and fastened within the clamping slot.

[0017] This utility model provides a wrench with a force-saving lever structure, the advantages of which are:

[0018] 1. By setting up a force-saving structure, which adopts the lever principle, the force applied to the wrench is amplified by the lever principle, which can effectively reduce the labor intensity of the operator, make it easier to tighten larger or tighter bolts and nuts, improve work efficiency, and further reduce labor intensity.

[0019] 2. By setting up detachable components, the connection between the wrench cap and the connecting wrench can be easily separated without the need for external tools. This facilitates quick disassembly and replacement of different types of wrench caps, thereby greatly improving the wrench's versatility and enabling it to adapt to more diverse operational needs. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the labor-saving structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the connecting collar structure in the disassembled component of this utility model.

[0023] Figure 4 This is a schematic diagram of the disassembly structure of some components in the disassembly assembly of this utility model.

[0024] Figure 5This is a schematic diagram of the limiting pressure ring structure in the split component of this utility model.

[0025] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0026] 1. Connecting wrench;

[0027] 2. Labor-saving structure;

[0028] 201. Connecting bracket; 2011. Pin hole;

[0029] 202. Fixed support block; 2021. Wrench cap;

[0030] 203. Threaded rod;

[0031] 204. Connecting cap; 2041. Handle; 2042. Anti-slip sleeve;

[0032] 3. Split components;

[0033] 301. Rotating shaft groove; 3011. Connecting shaft collar; 3012. Rotating threaded ring; 3013. Threaded hole; 3014. Anti-slip texture;

[0034] 302. Limiting insert; 3021. Limiting cross groove; 3022. Pressing arc plate;

[0035] 303, Limiting ring; 3031, Through groove; 3032, Clamping groove. Detailed Implementation

[0036] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0037] Example 1: As shown in the attached document Figure 1 To be continued Figure 5 As shown:

[0038] This utility model provides a wrench with a force-saving lever structure, comprising: a connecting wrench 1 and a force-saving structure 2;

[0039] One end of the connecting wrench 1 is provided with a force-saving structure 2, which includes the following components:

[0040] Connecting bracket 201: It is fixedly connected to one end of the connecting wrench 1, and the connecting bracket 201 has a pin hole 2011;

[0041] Fixed support block 202: disposed between connecting brackets 201, with a wrench cap 2021 fixedly connected to one end of the fixed support block 202;

[0042] Threaded rod 203: Installed between connecting bracket 201 and fixed support block 202;

[0043] Connecting cap 204: Fixedly connected to the other end of connecting wrench 1. A handle 2041 is fixedly connected to the connecting cap 204, and an anti-slip sleeve 2042 is fitted on the outside of the handle 2041.

[0044] By clamping the wrench cap 2021 onto the outside of the nut to form a resistance point, and then using the joint connecting the threaded rod 203 with the connecting bracket 201 and the fixed support block 202 as the fulcrum, and the position where the operator holds the handle 2041 as the power point, the wrench 1 and the handle 2041 together form a power arm. By rotating the handle 2041, the nut can be unscrewed with less effort using the lever principle.

[0045] Example 2: Based on Example 1, wherein... Figures 3 to 5 As shown, a splitting assembly 3 is provided at the connection bracket 201 and the fixed support block 202. The splitting assembly 3 includes a rotating shaft groove 301, a connecting shaft ring 3011 and a rotating screw ring 3012. The bottom of the connection bracket 201 is provided with a rotating shaft groove 301. The connecting shaft ring 3011 is rotatably installed inside the rotating shaft groove 301. The bottom of the connecting shaft ring 3011 is fixedly connected to the rotating screw ring 3012.

[0046] A threaded hole 3013 is provided in the middle of the rotating ring 3012. The threaded hole 3013 is rotatably engaged with the threaded rod 203. Anti-slip texture 3014 is provided on the outer side of the rotating ring 3012.

[0047] A limiting insert 302 is fixedly connected to the outer side of the middle part of the threaded rod 203, and a limiting cross groove 3021 is opened on the connecting bracket 201 and the fixed support block 202. The limiting insert 302 is fitted into the limiting cross groove 3021, and a pressing arc plate 3022 is fixedly connected to one end of the top of the threaded rod 203.

[0048] The top of the connecting bracket 201 is provided with a limiting pressure ring 303, and a through groove 3031 is provided on the limiting pressure ring 303. At the same time, a clamping groove 3032 intersecting with the through groove 3031 is also provided on the limiting pressure ring 303.

[0049] The clamping arc plate 3022 is fitted and installed in the clamping slot 3032.

[0050] Rotating the screw ring 3012 causes it to engage with the threaded rod 203 through the threaded hole 3013. The threaded rod 203 is guided and limited within the limiting cross groove 3021 by the limiting insert 302, causing the screw ring 3012 to move the threaded rod 203 upwards. This causes the threaded rod 203 to disengage the clamping arc plate 3022 from the clamping slot 3032. At this point, rotating the limiting pressure ring 303 aligns its through groove 3031 with the clamping arc plate 3022, allowing the limiting pressure ring 303 to be removed. When the threaded rod 203 can no longer engage with the screw ring 3012, it can be pulled out. Replacing the wrench cap 2021 with another wrench cap 2021 allows for the tightening of other types of nuts. During installation, aligning the fixing block 202 with the connecting bracket 201 is crucial. Then, the threaded rod 203 is inserted into the pin hole 2011. The wrench cap 2021 can be positioned by the cooperation of the limiting insert 302 and the limiting cross groove 3021 to prevent the wrench cap 2021 from changing its angle due to insufficient clamping force when tightening a tight nut, thus affecting the work process. After the threaded rod 203 is inserted back, the limiting pressure ring 303 is installed on the top of the connecting bracket 201 through the through groove 3031. Then, it is rotated again to align the clamping groove 3032 with the clamping arc plate 3022. Then, the screw ring 3012 is rotated in the opposite direction to drive the threaded rod 203 downward through the threaded hole 3013. Thus, the threaded rod 203 drives the clamping arc plate 3022 to be locked in the clamping groove 3032, thereby clamping the connection through the limiting pressure ring 303.

[0051] The specific usage and function of this embodiment are as follows:

[0052] In this invention, the wrench cap 2021 is secured to the outside of the nut, creating a resistance point. The connection joint between the threaded rod 203 and the connecting bracket 201 and the fixed support block 202 serves as the fulcrum, while the operator's grip on the handle 2041 provides the power point. This connects the wrench 1 and the handle 2041 to form a power arm. By rotating the handle 2041, the nut can be unscrewed with minimal effort using the lever principle. When replacing the wrench cap 2021 with another type, the rotating ring 3012 is rotated to engage with the threaded rod 203 through the threaded hole 3013. The threaded rod 203 is then guided and limited within the limiting cross groove 3021 by the limiting insert 302, preventing the rotating ring 3012 from being properly positioned. The threaded rod 203 is moved upward, causing the threaded rod 203 to disengage the clamping arc plate 3022 from the clamping slot 3032. At this time, the limiting pressure ring 303 is rotated so that its through slot 3031 is aligned with the clamping arc plate 3022. Then the limiting pressure ring 303 can be removed. When the threaded rod 203 cannot engage with the rotating screw ring 3012, the threaded rod 203 can be pulled out, and the wrench cap 2021 can be removed and replaced with other wrench caps 2021 to tighten other types of nuts. The connection between the wrench cap and the connecting wrench can be easily separated without the aid of external tools, which facilitates quick disassembly and replacement of different types of wrench caps, thereby greatly improving the versatility of the wrench and enabling it to adapt to more diverse work needs.

Claims

1. A wrench with a force multiplier lever structure comprising: Connecting the wrench (1) and the labor-saving structure (2); One end of the connecting wrench (1) is provided with a force-saving structure (2), characterized in that: the force-saving structure (2) includes the following components: Connecting bracket (201): It is fixedly connected to one end of the connecting wrench (1), and a pin hole (2011) is provided on the connecting bracket (201). Fixed support block (202): It is located between the connecting brackets (201), and a wrench cap (2021) is fixedly connected to one end of the fixed support block (202). Threaded rod (203): installed between connecting bracket (201) and fixed support block (202); Connecting cap (204): It is fixedly connected to the other end of the connecting wrench (1). A handle (2041) is fixedly connected to the connecting cap (204), and an anti-slip sleeve (2042) is fitted on the outside of the handle (2041).

2. A wrench with a force multiplier lever structure as claimed in claim 1, characterized in that: The connecting bracket (201) and the fixed support block (202) are provided with a splitting component (3). The splitting component (3) includes a rotating shaft groove (301), a connecting shaft ring (3011) and a rotating screw ring (3012). The bottom of the connecting bracket (201) is provided with a rotating shaft groove (301). The connecting shaft ring (3011) is rotatably installed inside the rotating shaft groove (301). The bottom of the connecting shaft ring (3011) is fixedly connected with a rotating screw ring (3012).

3. A wrench with a force multiplier lever structure as claimed in claim 2, characterized in that: The rotating screw ring (3012) has a threaded hole (3013) in the middle, which is engaged with the threaded rod (203). The rotating screw ring (3012) has anti-slip texture (3014) on the outer side.

4. A wrench with a force multiplier lever structure as claimed in claim 3, characterized in that: The threaded rod (203) is fixedly connected to the outer side of the middle part with a limiting insert (302), and a limiting cross groove (3021) is opened on the connecting bracket (201) and the fixed support block (202). The limiting insert (302) is fitted into the limiting cross groove (3021), and a pressing arc plate (3022) is fixedly connected to one end of the top of the threaded rod (203).

5. A wrench with a force multiplier lever structure as defined in claim 1, wherein: The top of the connecting bracket (201) is provided with a limiting pressure ring (303), and a through groove (3031) is provided on the limiting pressure ring (303). At the same time, a clamping groove (3032) intersecting with the through groove (3031) is also provided on the limiting pressure ring (303).

6. A wrench with a force multiplier lever structure as defined in claim 4, wherein: The clamping arc plate (3022) is fitted and clamped in the clamping slot (3032).

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