Portable electric torque wrench

Abstract

The utility model discloses a portable electric torque wrench, which belongs to the field of electric torque wrenches and is characterized in that the front end of a connecting piece is connected with a butt joint seat through a butt joint head, the upper end of the butt joint seat is provided with an assembly head, the end face of the assembly head is provided with a cross-shaped groove, four insertion rods are inserted into the cross-shaped groove, and each insertion rod is fixed on the assembly head through a fastener; through grooves are formed in the side walls of the inserting rods, screw rods are inserted into the through grooves and fixed to the inserting rods through limiting blocks, one inserting rod is connected to the two obliquely-arranged inserting rods, and the stability of the inserting rods is improved. The torque wrench ensures the connection stability and accuracy through the design of the assembly head, the cross groove and the insertion rod. The square distribution of the four insertion rods enhances the structural strength and uniform stress, and prevents damage or precision reduction. A user can adjust the screw and the limiting block to flexibly adjust the size of the torque wrench to adapt to different operation spaces. By means of the design, applicability and flexibility are improved, and it is ensured that work is efficiently and accurately completed.

Description

Technical Field

[0001] This utility model relates to the field of electric torque wrenches, and in particular to a portable electric torque wrench. Background Technology

[0002] An electric torque wrench is a tool used for fastening various mechanical fasteners. It is activated by pressing a start switch, typically located on the wrench handle. When the start switch is pressed, the motor begins to run, and the torque sensor measures the torque applied to the fastener, transmitting the measured torque data to the control system. The control system compares the set torque value with the measured actual torque value to determine if the motor speed needs adjustment for torque control. If the actual torque value exceeds the set torque value, the control system reduces the output torque by decreasing the motor speed; conversely, if the actual torque value is less than the set torque value, the control system increases the output torque by increasing the motor speed. Once the electric torque wrench has achieved the preset torque control, the fastener will be properly tightened.

[0003] Currently, electric torque wrenches have demonstrated their efficiency and convenience in practical applications, especially in situations requiring precise torque control. While the assembly-type connection of the torque head at the front end provides flexibility for changing the torque head, it has also introduced some problems.

[0004] Specifically, the modular connection allows users to quickly change torque heads of different sizes according to their work needs, which is undoubtedly a major advantage in dealing with diverse working environments and task requirements. However, this design also reveals some limitations. Since the specifications of torque heads on the market do not completely cover all sizes, users may encounter situations where certain specific sizes of torque heads are unavailable in practical applications, which to some extent limits the applicability of electric torque wrenches.

[0005] To address this issue, users often need to prepare multiple torque heads of different specifications for unforeseen circumstances. While this approach improves work flexibility, it also introduces the problem of inconvenience in carrying them. Carrying multiple torque heads not only increases the weight and size of the tools but also increases the risk of damage or loss during transportation and storage, causing unnecessary trouble and losses for users. Utility Model Content

[0006] The main objective of this invention is to provide a portable electric torque wrench that can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A portable electric torque wrench includes a torque wrench housing, an anti-slip rubber sleeve, a display screen, buttons, and connectors. The anti-slip rubber sleeve is fitted onto the torque wrench housing, the display screen and buttons are located at the side end of the torque wrench housing, and the connectors are located at the front end of the torque wrench housing.

[0009] The front end of the connector is connected to a mating seat via a connector, and an assembly head is installed on the upper end of the mating seat. The end face of the assembly head is provided with a cross groove, and four insert rods are inserted into the cross groove. Each insert rod is fixed to the assembly head by a fastener.

[0010] The side wall of the insertion rod has a through groove, and a screw is inserted into the through groove and fixed to the insertion rod by a limiting block. Two obliquely arranged insertion rods are connected to one insertion rod to improve the stability of the insertion rod.

[0011] In a further preferred embodiment of this application, a stabilizing seat is provided inside each of the four insert rods. The cross-section of the stabilizing seat is designed in the shape of a cross, and the edge of the stabilizing seat is designed in the shape of an arc. A screw hole is opened on the side wall of the stabilizing seat, which is directly opposite the through groove and is adapted to the screw rod.

[0012] In a further preferred embodiment of this application, the screw is inserted into the stabilizer, and the distance between the two obliquely symmetrical inserts is adjusted so that the inserts contact the stabilizer, which is the minimum size of the torque wrench connection port.

[0013] In a further preferred embodiment of this application, the side wall of the insertion rod is provided with a groove, which is connected to the through groove to form a "T" shaped groove. The surface of the insertion rod is connected with a rubber anti-slip sleeve by an adhesive, and the bottom of the insertion rod is designed with an arc shape. The upper section of the insertion rod is a threaded part. The fasteners are a fastening nut and an anti-slip washer. The fastening nut and the anti-slip washer are sleeved on the threaded part of the insertion rod to fix the insertion rod to the assembly head.

[0014] In a further preferred embodiment of this application, the side wall of the limiting block is provided with a notch, so that the limiting block is embedded in the groove of the side wall of the insert rod, the edge of the limiting block is arc-shaped, and the limiting block is threadedly connected to the screw rod.

[0015] In a further preferred embodiment of this application, the four insertion rods in the cross groove are arranged in a square shape, and the bottom of the four insertion rods are connected to a rubber sleeve by an adhesive.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The design combining the assembly head with the cross-shaped groove and insert rods ensures stable and accurate connections when the torque wrench is used with different tools or components. The four insert rods within the cross-shaped groove are arranged in a square pattern. This layout not only enhances the structural strength of the torque wrench but also ensures even force distribution during use, preventing damage or decreased accuracy caused by uneven force.

[0018] By adjusting the screw and limit block within the through slot of the insertion rod, users can flexibly adjust the size of the torque wrench to adapt to various working spaces and different operational needs. This design improves the applicability and flexibility of the torque wrench, enabling users to complete tasks efficiently and accurately in different scenarios.

[0019] The stabilizer design further enhances the stability of the torque wrench. Its cross-section is shaped like a cross, forming a robust support structure with the four inserts, effectively preventing wobbling or misalignment during use. Simultaneously, the curved edge design of the stabilizer reduces stress concentration, extending the torque wrench's lifespan.

[0020] The "T"-shaped groove formed by the connection between the groove and the through groove on the side wall of the plug, as well as the rubber anti-slip sleeve attached to the surface of the plug, both enhance the friction and anti-slip effect when gripping. This not only ensures the safety and stability of the user when using the torque wrench, but also improves the comfort and convenience of operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a diagram showing the overall structure of the present invention;

[0023] Figure 3 This is a diagram showing the assembly head, docking seat, and insertion rod of this utility model;

[0024] Figure 4 This is a schematic diagram of the assembly head, cross groove, insertion rod, fastener, screw, and stabilizer of this utility model;

[0025] Figure 5 The diagram shows the assembly head, cross groove, insertion rod, fastener, screw, and stabilizer of this utility model.

[0026] In the diagram: 1. Torque wrench housing; 2. Anti-slip rubber sleeve; 3. Display screen; 4. Button; 5. Connector; 6. Connector; 7. Connecting seat; 8. Assembly head; 9. Cross groove; 10. Insert rod; 11. Through groove; 12. Fastener; 13. Screw; 14. Limit block; 15. Stabilizer. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] like Figure 1 - Figure 5 As shown, a portable electric torque wrench mainly consists of a torque wrench housing 1, an anti-slip rubber sleeve 2, a display screen 3, buttons 4, and a connector 5. The torque wrench housing 1 is the main structure of the wrench, while the anti-slip rubber sleeve 2 is fitted onto the outside of the torque wrench housing 1 to increase friction and stability during gripping. The display screen 3 and buttons 4 are designed on the side of the torque wrench housing 1, allowing users to easily view torque values ​​and adjust function settings during operation. The connector 5 is located at the front end of the torque wrench housing 1 and is used for connecting to other tools or components.

[0029] The front end of connector 5 is connected to mating seat 7 via connector 6. An assembly head 8 is mounted on the upper end of mating seat 7, and a cross groove 9 is formed on the end face of assembly head 8. Four insert rods 10 are inserted into the cross groove 9, and each insert rod 10 is fixed to assembly head 8 by fasteners 12. Fasteners 12 can be screws, nuts, etc., to ensure a tight fit between insert rod 10 and assembly head 8.

[0030] The insert rod 10 has a through groove 11 on its side wall. A screw rod 13 is inserted into the through groove 11 and fixed to the insert rod 10 by a limiting block 14. The limiting block 14 has a notch on its side wall, allowing it to fit into a groove in the side wall of the insert rod 10. The edge of the limiting block 14 is arc-shaped to reduce stress concentration. The limiting block 14 is threadedly connected to the screw rod 13, ensuring that the screw rod 13 is fixed in position within the through groove 11.

[0031] Two obliquely positioned insertion rods 10 are connected to a third insertion rod 10; this structural design enhances the stability of the insertion rods 10. A stabilizing seat 15 is located within each of the four insertion rods 10. The stabilizing seat 15 has a cross-section in the shape of a cross and curved edges to reduce stress concentration and increase stability. A screw hole is provided on the side wall of the stabilizing seat 15, which aligns with the through slot 11 and is adapted to the screw rod 13.

[0032] The screw 13 is inserted into the stabilizer 15. By adjusting the length of the screw 13, the distance between the two obliquely symmetrical insert rods 10 can be adjusted. When the insert rods 10 contact the stabilizer 15, this is the minimum size of the torque wrench connection port, suitable for smaller working spaces. In this way, users can adjust the size of the torque wrench according to different work requirements.

[0033] The side wall of the insertion rod 10 has a groove that connects with the through groove 11 to form a "T"-shaped groove. A rubber anti-slip sleeve is attached to the surface of the insertion rod 10 with adhesive to increase friction and prevent slippage during gripping. The bottom of the insertion rod 10 has an arc-shaped design to accommodate workpiece surfaces of different shapes. The upper section of the insertion rod 10 is threaded, and the fastener 12 consists of a fastening nut and an anti-slip washer. The fastening nut and anti-slip washer are fitted onto the threaded section of the insertion rod 10, fixing the insertion rod 10 to the assembly head 8.

[0034] The four inserts 10 inside the cross groove 9 are arranged in a square pattern. This layout ensures the stability and even force distribution of the torque wrench during use. The bottoms of the four inserts 10 are connected to rubber sleeves by adhesive to increase friction and prevent slippage when gripping, while also protecting the inserts 10 from damage.

[0035] The anti-slip rubber sleeve 2 is fitted onto the outside of the torque wrench housing 1. The display screen 3 and button 4 are installed on the side of the torque wrench housing 1. The connector 5 is installed on the front end of the torque wrench housing 1. The coupling 6 is connected to the mating seat 7. The assembly head 8 is installed on the upper end of the mating seat 7. Four insert rods 10 are inserted into the cross groove 9 opened on the end face of the assembly head 8. The insert rods 10 are fixed on the assembly head 8 using fasteners 12 (such as screws, nuts, etc.). A through groove 11 is opened on the side wall of the insert rod 10, and a screw 13 is inserted. The screw 13 is fixed in the through groove 11 using a limiting block 14. Two obliquely arranged insert rods 10 are connected to one insert rod 10 to improve stability. A stabilizing seat 15 with a cross-shaped design is set inside the four insert rods 10. A screw hole is opened on the side wall of the stabilizing seat 15 and is adapted to the screw 13. The distance between the two obliquely symmetrical insert rods 10 is adjusted by adjusting the length of the screw 13. A groove is formed on the side wall of the insertion rod 10, and it connects with the through groove 11 to form a "T"-shaped groove. A rubber anti-slip sleeve is attached to the surface of the insertion rod 10 using adhesive. A rubber sleeve is also attached to the bottom of the insertion rod 10 using adhesive.

[0036] According to the work requirements, adjust the distance between the two obliquely symmetrical insert rods 10 by adjusting the length of the screw 13. When the insert rod 10 contacts the stabilizer 15, this is the minimum size of the torque wrench connection port, suitable for smaller working spaces. Adjust the size of the torque wrench according to different work requirements. When using the torque wrench, hold the torque wrench housing 1 and view the torque value through the display screen 3. Use the button 4 to set functions, such as adjusting the torque value. Connect the connector 5 to the tool or part to be operated. Ensure that the bottom arc design of the insert rod 10 adapts to different shaped workpiece surfaces. During use, ensure friction and anti-slip effect when gripping to guarantee operational stability and safety.

[0037] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0038] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A portable electric torque wrench, comprising a torque wrench housing (1), a non-slip rubber sleeve (2), a display screen (3) and a key (4) and a connecting piece (5), the non-slip rubber sleeve (2) is sleeved on the torque wrench housing (1), the display screen (3) and the key (4) are located at the side end of the torque wrench housing (1), and the connecting piece (5) is located at the front end of the torque wrench housing (1), characterized in that: The front end of the connecting piece (5) is connected with a butt joint (6), and the upper end of the butt joint (7) is provided with an assembling head (8), the end face of the assembling head (8) is provided with a cross slot (9), and four inserting rods (10) are inserted into the cross slot (9), and each inserting rod (10) is fixed on the assembling head (8) by a fastener (12); ​ The side wall of the inserting rod (10) is provided with a through groove (11), and a screw rod (13) is inserted into the through groove (11) and fixed on the inserting rod (10) by a limiting block (14), and one inserting rod (10) is connected between two obliquely arranged inserting rods (10), thereby improving the stability of the inserting rod (10).

2. A portable electric torque wrench as claimed in claim 1 wherein: Four inserting rods (10) are provided with a stable seat (15), and the cross section of the stable seat (15) is designed as a "cross", and the edge of the stable seat (15) is designed as an arc, and the side wall of the stable seat (15) is provided with a screw hole, which is opposite to the through groove (11) and matched with the screw rod (13).

3. A portable electric torque wrench as claimed in claim 2 wherein: The screw rod (13) is inserted into the stable seat (15), and the distance between the two obliquely arranged inserting rods (10) is adjusted, the inserting rod (10) contacts the stable seat (15), and at this time, the torque wrench connecting port has the smallest size.

4. The portable electric torque wrench of claim 1 or 3, wherein: The side wall of the inserting rod (10) is provided with a groove, which is connected with the through groove (11) to form a "T" shaped groove, the surface of the inserting rod (10) is connected with a rubber anti-skid sleeve by an adhesive, and the bottom of the inserting rod (10) is designed as an arc, the upper segment of the inserting rod (10) is a threaded part, the fastener (12) is a fastening nut and an anti-skid washer, and the fastening nut and the anti-skid washer are sleeved on the threaded part of the inserting rod (10) to fix the inserting rod (10) on the assembling head (8).

5. A portable electric torque wrench as claimed in claim 4 wherein: The side wall of the limiting block (14) is provided with a notch, so that the limiting block (14) is embedded in the groove in the side wall of the inserting rod (10), and the edge of the limiting block (14) is designed as an arc, and the limiting block (14) is threadedly connected with the screw rod (13).

6. A portable electric torque wrench as claimed in claim 5 wherein: The four inserting rods (10) in the cross slot (9) are distributed in a square shape, and the bottom of the four inserting rods (10) is connected with a rubber sleeve by an adhesive.

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