Wrench structure
The wrench structure addresses ergonomic and adaptability issues by forming a non-right angle between the handle and drive heads, improving torque transmission and reducing slippage risk, enhancing operational stability and safety.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2026-01-05
- Publication Date
- 2026-03-06
AI Technical Summary
Conventional wrenches have limitations in torque transmission efficiency, adaptability in small spaces, and ergonomic force application, leading to hand fatigue, uneven force application, and increased risk of slippage, especially in high-torque environments.
A wrench structure with a handle and drive heads forming a non-right angle, featuring angled surfaces and a beveled design to distribute force uniformly, reduce strain, and enhance adaptability and stability.
Improves ergonomic force application, reduces wrist strain, enhances adaptability in tight spaces, and decreases the risk of slippage, thereby increasing operational stability and safety.
Smart Images
Figure 0003254984000001_ABST
Abstract
Description
[Technical Field]
[0001] FIELD OF THE DISCLOSURE The present disclosure relates to structures, and more particularly to wrench structures. [Background technology]
[0002] In the prior art, the handle and drive head of a wrench are generally connected in a linear fashion. While this provides the basic function of applying force, it presents many limitations in actual operation. For example, when applying force, the user must fix their wrist and arm at a certain grip angle, which limits the direction of force application, affecting torque transmission efficiency and potentially increasing hand fatigue. Furthermore, in small or restricted work environments, the linear connection between the handle and drive head further limits adaptability, narrowing the tool's range of application and thereby affecting work efficiency.
[0003] In high-torque environments, conventional wrenches can apply uneven force, which can lead to unstable operation. Because the gripping method and force application direction are not necessarily ergonomic, prolonged use can easily result in uneven force application, which can affect the accuracy of fastening and loosening. In particular, when fastening nuts and bolts, users often need to apply greater force, which not only increases the operating load but also increases the risk of slippage due to an inappropriate force application angle, affecting safety during use.
[0004] Therefore, the current market lacks a technology that can effectively solve the above-mentioned problems, make the force application process more ergonomic, reduce strain on the wrist, improve adaptability in narrow spaces, and reduce the risk of slippage. Summary of the Invention [Problem to be solved by the invention]
[0005] Therefore, the present disclosure aims to provide a wrench structure that forms a specific angle between the handle and the drive shaft of the first drive head, making the force application process more ergonomic and reducing strain on the wrist, while also improving adaptability in tight spaces and reducing the risk of slippage. [Means for solving the problem]
[0006] In one embodiment of a structural aspect of the present disclosure, a wrench structure is provided that includes a first drive head, a second drive head, and a handle, the second drive head facing the first drive head. One end of the handle is connected to the first drive head and the other end is connected to the second drive head, where an angle is formed between the handle central axis of the handle and the first drive axis of the first drive head, and the angle is not a right angle.
[0007] In other implementations of the above-mentioned embodiments, the angle is between 65 degrees and 82 degrees.
[0008] In another implementation of the above-described embodiment, the first drive head includes a first opening and a plurality of inner planar surfaces that are interconnected and surround a first drive shaft of the first drive head.
[0009] In another implementation of the above embodiment, the number of the above-mentioned plurality of inner flat surfaces is four, forming five contact angles in the first driving head.
[0010] In another embodiment of the above-mentioned embodiment, the second drive shaft of the second drive head and the handle central axis of the handle are perpendicular to each other.
[0011] In another implementation of the above-described embodiment, the second drive head includes a second opening, a first side, and a second side, the first side being located on one side of the second opening, and the second side being located on the other side of the second opening and opposite the first side.
[0012] In another implementation of the above-described embodiment, the inside of the first side includes a recess.
[0013] In another implementation of the above-described embodiment, one end of the second side is beveled.
[0014] In another implementation of the above-described embodiment, the second opening is angled towards one side of the handle.
[0015] In another implementation of the above-described embodiment, the second drive head includes a groove bottom surface, which faces the second opening and is an inclined surface. [Brief explanation of the drawings]
[0016] [Figure 1] FIG. 1 is a schematic perspective view of a wrench structure according to one embodiment of the present disclosure. [Figure 2] FIG. 2 is a side view of the wrench structure according to FIG. 1; [Figure 3] FIG. 2 is an enlarged schematic view of the second driving head according to FIG. 1; DETAILED DESCRIPTION OF THE INVENTION
[0017] Hereinafter, several embodiments of the present disclosure will be described with reference to the drawings. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details do not limit the present disclosure. That is, in some embodiments of the present disclosure, these practical details are unnecessary. In addition, to simplify the drawings, well-known and commonly used structures and components are shown in a simplified outline manner in the drawings. Furthermore, overlapping components may be designated by the same reference numerals.
[0018] Furthermore, in this specification, when a component (or unit, module, etc.) is "connected / coupled" to another component, this can mean that the component is directly connected / coupled to the other component, or that the component is indirectly connected / coupled to the other component, i.e., that there is another component between the component and the other component. However, when a component is "directly connected / coupled" to another component, this means that there is no other component between the component and the other component. Terms such as "first," "second," and "third" are merely used to describe various components and do not limit the components themselves; therefore, a first component can also be referred to as a second component. The combinations of components / units / electrical circuits in this specification are not generally known, conventional, or known in the art, and whether or not the components / units / electrical circuits themselves are known does not determine whether or not the combinations can be easily implemented by those skilled in the art.
[0019] Please refer to Figure 1. Figure 1 is a schematic perspective view of a wrench structure 100 according to one embodiment of the present disclosure. Wrench structure 100 includes a first drive head 110, a second drive head 120, and a handle 130.
[0020] The first driving head 110 includes a first opening 111 and a plurality of inner flat surfaces 112. Specifically, the number of the inner flat surfaces 112 is four, and each of the inner flat surfaces 112 is flat and has the same dimensions. The inner flat surfaces 112 are connected to each other and form five contact angles 113 within the first driving head 110. This provides a configuration of multiple contact angles 113, which more uniformly distributes force, reduces stress concentration, and reduces the risk of damage (such as thread stripping or deformation) to the edges of nuts or bolts. It should be noted that in other embodiments, the first driving head can have different numbers and shapes of inner flat surfaces and contact angles depending on the shape of the driven member, and the present disclosure is not limited thereto.
[0021] The second driving head 120 faces the first driving head 110 and includes a second opening 121, a first side 122, and a second side 123. The first side 122 is located on one side of the second opening 121, and the second side 123 is located on the other side of the second opening 121 and faces the first side 122.
[0022] One end of the handle 130 is connected to the first driving head 110, and the other end is connected to the second driving head 120. The handle 130 is provided for a user to grasp and apply force to operate it. In addition, the surface of the handle 130 may be provided with an anti-slip texture or special coating layer, which increases friction and ensures that the user can grip it stably when applying force under various circumstances, reducing the risk of slipping during operation.
[0023] Please refer to Figures 1 and 2. Figure 2 is a side view of the wrench structure 100 based on Figure 1. As can be seen from Figures 1 and 2, the handle 130 has a handle central axis L0, the first drive head 110 has a first drive axis L1, and a plurality of inner flat surfaces 112 surround the first drive axis L1. The second drive head 120 has a second drive axis L2. An angle θ1 is formed between the handle central axis L0 of the handle 130 and the first drive axis L1 of the first drive head 110, and the angle θ1 is not a right angle. The second drive axis L2 of the second drive head 120 and the handle central axis L0 of the handle 130 are perpendicular.
[0024] In this embodiment, the angle θ1 ranges from 65 degrees to 82 degrees. By providing the angle θ1, the relative position between the handle 130 and the first driving head 110 is more ergonomic, thereby effectively reducing strain on the wrist. At the same time, the wrench structure 100 is more adaptable to small spaces, allowing users to apply force more easily in restricted environments, and effectively reducing the risk of slippage, further improving operational stability and safety.
[0025] Please refer to FIG. 3. FIG. 3 is an enlarged schematic diagram of the second driving head 120 based on FIG. 1. In this embodiment, the inner surface 1221 of the first side 122 includes a recess 1222. The depth of the recess 1222 is between 0.6 cm and 6.2 cm. The depth of the recess 1222 is adjusted according to the size of the second driving head 120, thereby ensuring the structural strength and the force application effect and maintaining the stability of the operation. In other words, if the size of the second driving head 120 is relatively large, the depth of the recess 1222 will be correspondingly deep; if the size of the second driving head 120 is relatively small, the depth of the recess 1222 will be correspondingly reduced. The recess 1222 provides an additional locking effect during the operation, improving the stability between the second driving head 120 and the force applied by the user and reducing unnecessary slippage. This helps to improve torque transmission efficiency, increasing the precision and stability of operation, especially in situations where high torque is required, and reducing the risk of slippage or uneven force application.
[0026] One end of the second side 123 is beveled. Specifically, the shape of the second side 123 gradually widens toward the handle 130. The beveled shape of the second side 123 not only makes the force application angle more ergonomic, but also reduces unnatural twisting during force application, thereby reducing strain on the wrist. It also helps improve torque transmission efficiency, allowing the force application operation to act more directly on the second driving head 120, thereby reducing force loss. When operating in a small space, the user can more flexibly adjust the force application angle, improving operation precision and preventing excessive resistance and hand fatigue.
[0027] The first and second sides 122 and 123 have different thicknesses and serve different functions. The first side 122 has a relatively uniform thickness and its main function is to provide structural stability, effectively withstand the application of relatively large forces, and ensure stability during operation. The second side 123 extends from the edge of the second opening 121 toward the handle 130, gradually increasing in thickness, and its edge is beveled. This configuration not only helps reduce friction, but also allows for more uniform and smooth application of force, improving torque transmission efficiency. The beveled shape effectively improves the tool's adaptability for operation in tight spaces, making the force application process more precise and stable. The difference in thickness between the first and second sides 122 and 123 achieves a balance between stability and adaptability, further enhancing operational performance.
[0028] The second driving head 120 includes a groove bottom surface 124. The groove bottom surface 124 faces the second opening 121 and is an inclined surface. This facilitates guiding the force application direction and reduces misalignment caused by angular mismatch, thereby enhancing stability during operation. This not only reduces friction but also effectively distributes the applied force, improving torque transmission efficiency. Furthermore, the inclined surface reduces wear between the tool and the object during use, thereby extending the tool's service life.
[0029]
[0033] Referring again to Figure 3, the second opening 121 is inclined toward one side of the handle 130. Specifically, the handle central axis L0 of the handle 130 and the drive head central axis L3 of the second drive head 120 are offset by an offset angle θ2. The offset angle θ2 ranges from 10 degrees to 25 degrees. This allows the direction of force application to more naturally match the user's movements, reducing strain on the wrist and arm when applying force, thereby improving comfort and durability of operation. Additionally, the offset angle θ2 improves the maneuverability of the wrench structure 100 in tight spaces, allowing the user to easily apply force and maintain stability even in space-restricted situations, thereby improving safety and precision.
[0030] In summary, the wrench structure of the present disclosure has the following advantages: First, the angle setting between the handle and the first drive head makes the force application process more ergonomic, reducing strain on the wrist and improving operation comfort; Second, it improves adaptability in tight spaces and reduces the risk of slippage; and Third, it enhances torque transmission efficiency, further improving operation stability and safety.
[0031] Although the present disclosure has been disclosed by the embodiments as described above, they do not limit the present disclosure, and a person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and the scope of protection of the present disclosure shall be as defined by the scope of the attached utility model registration claims. [Explanation of symbols]
[0032] 100 wrench structure 110 First drive head 111 First Opening 112 Medial plane 113 Contact angle 120 Second drive head 121 Second Opening 122 First side 1221 Inside 1222 recess 123 Second Side 124 Groove bottom surface 130 Handle L0 Handle center axis L1 First drive shaft L2 Second drive shaft L3 Drive head center axis θ1 angle θ2 deviation angle
Claims
1. a first drive head; a second drive head facing the first drive head; a handle having one end connected to the first drive head and another end connected to the second drive head; A wrench structure, wherein an angle is formed between a handle central axis of the handle and a first drive axis of the first drive head, and the angle is not a right angle.
2. 2. The wrench structure of claim 1, wherein the angle is between 65 degrees and 82 degrees.
3. The first drive head includes: A first opening; 2. The wrench structure of claim 1, further comprising: a plurality of interconnected interior planar surfaces surrounding said first drive shaft of said first drive head.
4. 4. The wrench structure of claim 3, wherein the plurality of interior surfaces is four in number and defines five contact angles on the first drive head.
5. 2. The wrench structure of claim 1, wherein the second drive axis of the second drive head and the handle central axis of the handle are perpendicular.
6. The second drive head A second opening; and a first side portion located on one side of the second opening; 2. The wrench structure of claim 1, further comprising: a second side located on the other side of said second opening and opposite said first side.
7. The wrench structure of claim 6 , wherein the inside of the first side includes a recess.
8. The wrench structure of claim 6 , wherein one end of the second side is beveled.
9. 7. The wrench structure of claim 6, wherein said second opening is angled toward one side of said handle.
10. 7. The wrench structure of claim 6, wherein the second drive head includes a groove bottom surface, the groove bottom surface facing toward the second opening and being an inclined surface.