Wrench with magnetic grabbing function

Abstract

The utility model discloses a wrench with a magnetic grabbing function, and relates to the technical field of tools, in particular to the wrench with the magnetic grabbing function. Comprising a main body, a neodymium iron boron magnet, a primary fixing groove, a secondary fixing convex groove, a multifunctional head, a magnetic attraction connecting device, a pin shaft, an electric heating wire, a battery, a temperature sensor and a grip. According to the utility model, the neodymium-iron-boron magnet is embedded into the working end of the wrench through the magnetic grabbing function, the magnet is ensured to be stably embedded through the fixing groove, strong magnetic adsorption force is provided, and bolts and nuts are prevented from sliding off. And secondly, the magnetic multifunctional head design adopts a magnetic connecting device and a multifunctional head design, so that the user can quickly replace heads with different specifications, and the operation efficiency is improved. Finally, a heating wire, a temperature sensor and a battery are arranged in a grip of the heating handle, the temperature is adjusted through a control switch, the continuous heating function is provided, the operation comfort and safety in the low-temperature environment are ensured, and the hand is prevented from being stiff or frostbite.

Description

Technical Field

[0001] The utility model relates to the technical field of tools, in particular to a wrench with a magnetic grabbing function. Background Art

[0002] During the operation of traditional wrenches, bolts and nuts are often difficult to remove, especially in a small space. In addition, bolts and nuts of different specifications require multiple wrenches, which is inconvenient to use. In a low temperature environment, the wrench handle is easily cold, causing uncomfortable operation. The existing technology fails to solve these problems at the same time. An existing multifunctional wrench for power installation (publication number: CN107971977A) has the following disadvantages and needs further improvement.

[0003] Traditional equipment relies on the mechanical clamping force of the wrench head when grabbing bolts and nuts, which is not reliable in some cases. When the bolts or nuts are in a small space, or when there is oil or rust on their surface, which reduces the friction, it is difficult for traditional wrenches to grab them steadily. This increases the difficulty of operation and causes bolts or nuts to fall, especially in high altitudes or places that cannot be easily reached. Falling bolts or nuts may cause equipment damage or safety hazards. In addition, in some special maintenance environments, such as in the engine compartment of a car or inside a machine tool, the operating space is extremely limited, and traditional wrenches cannot be used flexibly, and bolts and nuts are prone to slipping and falling. Therefore, a wrench with a magnetic grab function is urgently needed. Traditional equipment is designed with a fixed head, and different models and sizes of wrenches are required for bolts and nuts of different specifications and shapes. Users are required to carry and reserve multiple wrenches, which increases the size and weight of the toolbox, and frequently change tools during use, affecting work efficiency. In a mechanical maintenance project, users need to deal with a variety of fasteners of different specifications. Using a fixed-head wrench, tools must be constantly replaced, resulting in interruptions in the work rhythm. Therefore, there is an urgent need for a wrench with a magnetic multifunctional head design. In a low-temperature environment, the metal handle of traditional equipment will become cold due to its high thermal conductivity, making the user's hands feel uncomfortable during operation. Working in this environment for a long time will reduce the accuracy and speed of operation, and also cause hand stiffness or even frostbite, affecting operational safety and user health. Even if you wear gloves for operation, the cold handle of the traditional wrench will still conduct the low temperature through the gloves, and the gloves may also affect the feel and sensitivity, further reducing work efficiency. In some occasions that require high-precision operation, such as electronic equipment maintenance or precision machinery adjustment, the cold handle of the traditional wrench will greatly reduce the comfort and accuracy of the operation. In addition, in some outdoor or extreme environments, low temperatures not only affect the user's operating experience, but also affect the performance of the tool itself. Therefore, there is an urgent need for a wrench with a heated handle design. Utility Model Content

[0004] The main purpose of the utility model is to provide a wrench with a magnetic grabbing function, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: there is a wrench with a magnetic grabbing function, a neodymium iron boron magnet is installed above the main body, a female fixing groove is installed inside the neodymium iron boron magnet, a sub-fixing convex groove is installed above the top of the female fixing groove, a multifunctional head is installed above the sub-fixing convex groove, a magnetic suction connection device is installed above the multifunctional head, a pin is installed inside the magnetic suction connection device, a heating wire is installed outside the main body, a battery is installed inside the main body, a temperature sensor is installed inside the main body, and a handle is installed outside the main body.

[0006] Preferably, the exterior of the main body adopts a rounded corner design.

[0007] Preferably, the multifunctional head and the magnetic connection device have a buckle designed to increase friction at the bite.

[0008] Preferably, the pin is a Φ5mm round hole.

[0009] Preferably, one side of the temperature sensor has three output control devices to control the temperature.

[0010] Preferably, the heating wire is spirally wound outside the main body, and both ends are connected to the battery.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model can improve the gripping ability and operating efficiency of the wrench by adding NdFeB magnets and fixed grooves. NdFeB magnets are known for their strong magnetism and can firmly absorb bolts and nuts, even in complex environments such as narrow, oily, and rusty. The fixed groove ensures that the magnet is firmly embedded so that it will not fall off during use, thereby ensuring the reliability and durability of the wrench. In actual operation, users do not need to rely solely on mechanical snap-fit ​​force, and magnetic adsorption provides additional gripping force to effectively prevent bolts and nuts from slipping. This is particularly important for working at high altitudes or in places that cannot be easily accessed, avoiding equipment damage and safety hazards caused by falling bolts or nuts. In addition, in some special maintenance environments, such as in the engine compartment of a car or inside a machine tool, the operating space is extremely limited. The magnetic gripping function allows the wrench to be flexibly used in a small space, significantly reducing the difficulty and time of operation and improving work efficiency. The utility model can improve the scope of application and operating efficiency of the tool by adding a magnetic suction connection device and a multi-functional head. The magnetic connection device includes an embedded magnet and a paired magnetic head interface, allowing users to quickly replace heads of different specifications, such as wrenches, hexagonal heads, plum heads, etc. Each head is embedded with a magnet to ensure a stable connection with the working end. This design not only facilitates the carrying and storage of tools, but also greatly reduces the volume and weight of the toolbox. In actual use, users do not need to frequently replace wrenches of different models and sizes. They only need to replace the wrench head to deal with fasteners of different specifications, thereby maintaining the consistency and efficiency of the work. In mechanical maintenance projects, users often need to deal with a variety of fasteners of different specifications. The magnetic multifunctional head design allows users to replace the head in a few seconds, maintaining the consistency and efficiency of the workflow. The utility model can solve the problem of discomfort in operation in a low temperature environment by adding batteries, temperature sensors, and heating wires. The heating wire provides a continuous heating function to keep the handle at a suitable temperature in a low temperature environment. The temperature sensor and control circuit ensure that the operating temperature of the heating element is within a safe and comfortable range. The built-in battery can be charged through the USB interface to provide continuous power, so that the wrench can stay warm during long-term operation. The control switch is located on the surface of the handle, and users can easily adjust the temperature, start or turn off the heating function, and ensure the comfort of the hand during operation. The application of thermal insulation material prevents the temperature of the outside of the handle from being too high, improving the comfort and safety of holding. In low temperature environments, traditional wrenches become cold due to the high thermal conductivity of the metal handle, making the user's hands feel uncomfortable during operation. Long-term work may cause hand stiffness or even frostbite, affecting the safety and accuracy of operation. The heated handle design effectively solves this problem, improves the accuracy and speed of operation, and avoids safety hazards caused by hand discomfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an exploded view of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0015] In the figure: 1. Main body; 2. NdFeB magnet; 3. Female fixing groove; 4. Male fixing convex groove; 5. Multifunctional head; 6. Magnetic connection device; 7. Pin shaft; 8. Heating wire; 9. Battery; 10. Temperature sensor; 11. Handle. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0017] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] Example

[0020] See also Figure 1-2 , the utility model provides a technical solution:

[0021] A wrench with a magnetic grabbing function, wherein a NdFeB magnet 2 is installed above the main body 1, a female fixing groove 3 is installed inside the NdFeB magnet 2, a sub-fixing convex groove 4 is installed above the top of the female fixing groove 3, a multifunctional head 5 is installed above the sub-fixing convex groove 4, a magnetic attraction connecting device 6 is installed above the multifunctional head 5, a pin 7 is installed inside the magnetic attraction connecting device 6, a heating wire 8 is installed outside the main body 1, a battery 9 is installed inside the main body 1, a temperature sensor 10 is installed inside the main body 1, and a handle 11 is installed outside the main body 1.

[0022] The following is a specific implementation of the utility model components:

[0023] 1. Main body: The main body is the core support structure of the entire device, used to connect and fix other components. One end of the main body is connected to the NdFeB magnet, and the other end is connected to the grip by a threaded connection to provide a stable operating foundation. The main body 1 is designed with channels and grooves inside to accommodate the battery and temperature sensor, and to ensure that the heating wire can be smoothly wound around its exterior.

[0024] 2. NdFeB magnet: NdFeB magnet is installed above the main body and fixed to the main body by bonding or embedding. The main function of the magnet is to provide strong magnetic force for adsorbing and grabbing bolts and nuts. The NdFeB magnet is provided with a female fixing groove inside, so that it can be firmly installed on the main body 1 and form a firm connection with other components.

[0025] 3. Female fixing groove: The female fixing groove is installed inside the NdFeB magnet to fix and connect it. The top of the female fixing groove is designed with a structure for connecting the sub-fixing convex groove to ensure that the two can be closely combined to achieve a stable fixing effect. Through the female fixing groove, a stable connection interface is formed between the NdFeB magnet and the main body.

[0026] 4. Sub-fixing convex groove: The sub-fixing convex groove is installed on the top of the female fixing groove and connected to the multi-function head at the top. The sub-fixing convex groove forms a firm snap fit with the concave part of the female fixing groove through its convex structure, ensuring that the multi-function head will not loosen or fall off during use. The sub-fixing convex groove also provides a stable connection point so that the multi-function head can be reliably installed on the equipment.

[0027] 5. Multifunctional head: The multifunctional head is installed above the sub-fixing groove and connected to the rest of the device through a magnetic connection device. The multifunctional head is designed to be replaceable, and different specifications and shapes of wrenches can be replaced as needed to adapt to different types of bolts and nuts. The multifunctional head is embedded with magnets, which work closely with the magnetic connection device to achieve quick replacement and stable connection.

[0028] 6. Magnetic connection device: The magnetic connection device is located above the multifunctional head and is firmly connected to the multifunctional head through magnetic adsorption. A pin is designed inside the magnetic connection device to increase the stability of the connection. This device enables the multifunctional head to be quickly replaced without the use of tools, greatly improving the convenience of operation of the device.

[0029] 7. Pin: The pin is installed inside the magnetic connection device, and the connection stability between the multifunctional head and the device is further enhanced by insertion and fixation. Pin 7 can prevent the multifunctional head from rotating or falling off during use, ensuring the safety and reliability of operation.

[0030] 8. Heating wire: The heating wire is wrapped around the outside of the main body and powered by a battery to provide heating function. The function of the heating wire is to keep the handle warm in a low temperature environment to prevent the user's hands from being uncomfortable due to the cold. The heating wire controls the heating temperature through a temperature sensor to ensure safety and comfort.

[0031] 9. Battery: The battery is installed inside the main body to provide power for the heating wire and temperature sensor. The battery is connected to other electronic components through appropriate connections to ensure that the device can continue to supply power during long-term use. The battery can be charged through the USB port for user convenience.

[0032] 10. Temperature sensor: The temperature sensor is installed inside the main body and is mainly used to detect the temperature of the heating wire and adjust the heating temperature through the control circuit. The temperature sensor 10 ensures that the device maintains a safe and comfortable temperature during the heating process, preventing overheating or hypothermia.

[0033] 11. Grip: The grip is installed on the outside of the main body and connected to the main body through appropriate connection methods. The grip is made of heat-insulating material to prevent the heat of the heating wire from being directly transferred to the hand, improving the comfort of holding. The design of the grip is ergonomic and provides a stable and comfortable operating experience.

[0034] The following is the specific technical logic implementation method of the innovative point of this utility model:

[0035] 1. Specific technical implementation of magnetic grabbing function

[0036] The utility model significantly improves the gripping ability and operating efficiency of the wrench by introducing NdFeB magnets and fixed grooves. Specifically, NdFeB magnets are known for their strong magnetism and can firmly adsorb bolts and nuts, even in complex environments such as narrow, oily, and rusty environments. First, a fixed groove is designed at the working end of the wrench, which is manufactured through precision machining to ensure that the NdFeB magnet can be firmly embedded. The magnet is fixed in the groove by a high-strength adhesive or a mechanical snap to prevent it from loosening or falling off during use. This design not only enhances the reliability and durability of the wrench, but also provides additional magnetic adsorption force in actual operation. Users do not need to rely solely on mechanical snap-fitting force. The adsorption force of the magnet can effectively prevent bolts and nuts from slipping, especially when working at high altitudes or in places that cannot be easily accessed, avoiding equipment damage and safety hazards caused by falling bolts or nuts. In addition, in some special maintenance environments, such as in the engine compartment of a car or inside a machine tool, the operating space is extremely limited. The magnetic grip function allows the wrench to be flexibly used in a small space, significantly reducing the difficulty and time of operation and improving work efficiency. The high efficiency of the NdFeB magnet and the stable design of the fixed groove form a tightly integrated whole, ensuring the reliable application of the magnetic grip function in various complex working conditions.

[0037] 2. Specific technical implementation of magnetic multifunctional head design

[0038] The utility model greatly expands the scope of application and operating efficiency of the tool by introducing a magnetic connection device and a multifunctional head design. Specifically, the magnetic connection device includes an embedded magnet and a paired magnetic head interface, and the design idea is to achieve a fast and stable connection through magnetic adsorption. A magnetic connection device is set at the working end, which is composed of an embedded magnet and a corresponding magnetic interface, so that users can easily replace heads of different specifications (such as wrenches, hexagonal heads, plum heads, etc.). A magnet is embedded inside each head to ensure that it can closely cooperate with the magnetic connection device at the working end to provide a stable connection. This design not only simplifies the carrying and storage of tools, greatly reduces the volume and weight of the toolbox, but also enables users to avoid frequently changing wrenches of different models and sizes during actual use. By quickly changing the head, users can adapt to fasteners of different specifications in a few seconds, thereby maintaining the consistency and efficiency of the work. For example, in mechanical maintenance projects, users often need to deal with a variety of fasteners of different specifications, and traditional wrenches require frequent tool changes, resulting in interruptions in the work rhythm. The magnetic multifunctional head design allows users to replace the head in a few seconds, maintaining the consistency and efficiency of the work process. In addition, the quick-change mechanism uses a snap-on or threaded connection to assist the magnetic connection, ensuring the convenience and stability of head replacement, further improving the safety and efficiency of operation.

[0039] 3. Specific technical implementation methods of heated handle design

[0040] The utility model realizes the heating handle function by introducing batteries, temperature sensors and heating wires, and effectively solves the problem of uncomfortable operation in low temperature environments. Specifically, the design of the heating handle includes several core parts: heating wires, temperature sensors, control circuits and batteries. The heating wire is wound around the outside of the main body 1, and is powered by the battery, which can continuously heat the handle to keep a suitable temperature in a low temperature environment. The temperature sensor and the control circuit work together to monitor and adjust the temperature of the heating element in real time to ensure that the heating temperature is within a safe and comfortable range to avoid overheating or low temperature. The built-in rechargeable lithium battery is charged through the USB interface to provide continuous power so that the wrench can remain warm even during long-term operation. The control switch is located on the surface of the handle, and the user can easily adjust the temperature, start or turn off the heating function, and ensure the comfort of the hand during operation. The grip is made of heat-insulating material to prevent the heat of the heating wire from being directly transferred to the hand, thereby improving the comfort and safety of holding. In a low temperature environment, the traditional wrench becomes cold due to the high thermal conductivity of the metal handle, which makes the user's hand feel uncomfortable during operation. Long-term work may cause hand stiffness or even frostbite, affecting operational safety and accuracy. The heated handle design effectively solves this problem. It keeps the handle warm by continuous heating, improves the accuracy and speed of operation, and avoids safety hazards caused by hand discomfort. This design not only improves the user's operating experience in low temperature environments, but also protects the performance of the tool in extreme environments, making it more durable and reliable.

[0041] The following is the workflow of this utility model:

[0042] 1. Preparation:

[0043] 1.1 Make sure the device battery is charged and the grip is turned off.

[0044] 1.2 Check the working area and operating environment to ensure safety and cleanliness.

[0045] 2. Turn on the heating function:

[0046] 2.1 Press the heating switch on the handle, the heating wire starts to heat up and the surface of the handle starts to heat up.

[0047] 2.2 The temperature sensor monitors the heating temperature to ensure it is within a safe range.

[0048] 3. Select and install the header:

[0049] 3.1 Select a suitable working head and ensure that the magnetic adsorption device on the head is matched with the magnetic connection device of the main body.

[0050] 3.2 Insert the head into the magnetic connection device and ensure a firm connection to ensure safe and efficient operation.

[0051] 4. Perform the operation:

[0052] 4.1 Place the tool head on the target fastener and use the magnetic grip function to firmly fix it on the bolt or nut.

[0053] 4.2 Rotate or operate the handle, use the lever principle of the wrench to apply force and rotate the fastener.

[0054] 5. Adjust the heating function:

[0055] 5.1 According to the operating environment and hand feel, the heating function can be adjusted through the heating switch on the grip to provide a more comfortable operating experience.

[0056] 6. Complete the operation:

[0057] 6.1 After completing the tightening or removal operation of the fastener, release the grip.

[0058] 6.2 Turn off the heating function, ensure the grip is cool and store it safely.

[0059] The following is the operating instructions of this utility model:

[0060] 1. Safety precautions:

[0061] a. Please be familiar with the functions and operating steps of the equipment before operation.

[0062] b. Ensure that the operating area is safe and unobstructed, and avoid involving other people or objects outside the equipment.

[0063] 2. Equipment preparation:

[0064] a.Confirm that the device battery is in good charging status.

[0065] b. Before turning on the heating function, please make sure the handle surface is clean and undamaged to avoid affecting the heating effect.

[0066] 3. Head replacement:

[0067] a. Replace different types of working heads as needed.

[0068] b. When using, please make sure the head is paired with the magnetic connection device, insert and tighten to ensure a firm connection.

[0069] 4. Operation steps:

[0070] a. Place the tool head on the target fastener, making sure the magnetic attachment is firmly fixed.

[0071] b. Use the handle to rotate and tighten or remove the bolts or nuts using appropriate force and angle.

[0072] 5. Heating function adjustment:

[0073] a. To heat the handle to improve operating comfort, press the heating switch on the handle.

[0074] b. During operation, the heating function can be adjusted in time according to the hand feel and ambient temperature to maintain the appropriate temperature of the grip surface.

[0075] 6. End the operation:

[0076] a. After finishing the work, release the grip and make sure the operation area is clean.

[0077] b. If no longer in use, please turn off the heating function and store the device properly.

[0078] The following are the parameters of this utility model:

[0079] Parameter name Parameter Value Total length of equipment 300=mm Equipment weight 500=g NdFeB magnet size 10=mm=x=5=mm=x=3=mm Magnet attraction 2 = kg Working head specifications 10=mm,=12=mm,=14=mm,=17=mm,=19=mm Heating wire power 5W Battery capacity 2000=mAh Charging port USB=Type-C Charging time 2 = hours Temperature sensor type NTC = Thermistor Temperature range 30℃-60℃ Grip Material Thermal insulation plastic Heating time 1 minute to working temperature Maximum Torque 50Nm Magnetic connection type NdFeB magnet + mechanical buckle Waterproof grade IP54

[0080] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A wrench with a magnetic gripping function, comprising a main body (1), characterized in that: A neodymium iron boron magnet (2) is mounted above the main body (1), a female fixing groove (3) is mounted inside the neodymium iron boron magnet (2), a sub-fixing convex groove (4) is mounted above the top of the female fixing groove (3), a multifunctional head (5) is mounted above the sub-fixing convex groove (4), a magnetic attraction connecting device (6) is mounted above the multifunctional head (5), a pin (7) is mounted inside the magnetic attraction connecting device (6), a heating wire (8) is mounted outside the main body (1), a battery (9) is mounted inside the main body (1), a temperature sensor (10) is mounted inside the main body (1), and a handle (11) is mounted outside the main body (1).

2. A wrench with a magnetic gripping function according to claim 1, characterized in that: The exterior of the main body (1) is designed with rounded corners.

3. The wrench with magnetic gripping function according to claim 1 is characterized in that: The multifunctional head (5) and the magnetic connection device (6) have a snap-fit ​​design that increases friction at the bite point.

4. The wrench with magnetic gripping function according to claim 1 is characterized in that: The pin shaft (7) is a Φ5 mm round hole.

5. The wrench with magnetic gripping function according to claim 1 is characterized in that: One side of the temperature sensor (10) is provided with three output control devices for controlling the temperature.

6. The wrench with magnetic gripping function according to claim 1, characterized in that: The heating wire (8) is spirally wound around the outside of the main body (1), and both ends are connected to the battery (9).

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