Handheld lithium battery wrench

Abstract

The utility model discloses a handheld lithium battery wrench which comprises a shell, a grip is fixedly arranged at the bottom of the shell, a lithium battery and a switch are arranged on the grip, a mounting seat is rotatably arranged on one side of the shell, a bolt lantern ring is arranged on the mounting seat, a driving motor is arranged in the shell, and the output end of the driving motor is fixedly connected with the mounting seat. Two limiting plates are symmetrically arranged on the shell in a sliding mode, one end of each limiting plate penetrates through the shell and is provided with a rolling wheel, a mounting cavity is formed in the shell, a driving assembly for driving the two limiting plates to move oppositely is arranged in the mounting cavity, sleeves are symmetrically and rotationally arranged in the mounting cavity, and threaded rods are in threaded connection with the interiors of the sleeves. One end of the threaded rod penetrates through the shell and is slidably sleeved with a connecting cylinder, a spring is arranged between the inner wall of the connecting cylinder and the threaded rod, a transmission assembly is arranged in the mounting cavity, and the driving assembly drives the sleeve to rotate through the transmission assembly. The operation steps are simple, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, in particular to a handheld lithium-electric wrench. Background Art

[0002] A wrench is a commonly used installation and removal tool. A wrench usually has an opening or a hole at one or both ends of the handle to clamp a bolt or nut. When in use, an external force is applied to the handle along the direction of thread rotation to turn the bolt or nut. Lithium-powered wrenches are becoming more and more popular because they are more labor-saving and efficient when tightening bolts or nuts, and are easy to carry.

[0003] A Chinese patent document with the announcement number CN219901954U discloses a lithium battery handheld electric wrench, including a housing and a protective unit; a handle is provided on the lower surface of the housing, a button and a lithium battery are provided on the handle, a mounting cavity is provided in the housing, a drive motor and a PLC controller are provided in the mounting cavity, a mounting seat is rotatably connected to the side of the housing, the mounting seat is connected to the drive motor, and a bolt sleeve is provided on the mounting seat. The connection length of the support rod and the sleeve is conveniently adjusted through the locking hole and the bolt, the fixing block is adsorbed on the external obstruction by the magnet, so that the support rod fits on the external obstruction, and the housing is limited by the U-shaped seat, the sleeve, the support rod and the fixing block.

[0004] The disadvantage of the above disclosed solution is that when using a wrench to install the bolt, it is necessary to first use a limit unit to limit the bolt sleeve, then use a protective unit to fit on an external obstruction, and then control the drive motor to drive the bolt sleeve to rotate. This makes the operation steps more complicated and reduces work efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a handheld lithium battery wrench. The driving component drives the two limit plates to move towards each other, and at the same time the driving component drives the sleeve to rotate through the transmission component. The operation steps are simple and the problems in the background technology can be effectively solved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a handheld lithium-ion wrench comprises a shell, a handle is fixedly arranged at the bottom of the shell, a lithium battery and a switch are arranged on the handle, a mounting seat is rotatably arranged on one side of the shell, a bolt collar is arranged on the mounting seat, a driving motor is arranged in the shell, the output end of the driving motor is fixedly connected to the mounting seat, two symmetrically arranged limit plates are slidably arranged on the shell, one end of the limit plate passes through the shell and is provided with a roller, an installation cavity is opened in the shell, a driving assembly for driving the two limit plates to move toward each other is arranged in the installation cavity, a sleeve is symmetrically rotatably arranged in the installation cavity, a threaded rod is threadedly connected in the sleeve, one end of the threaded rod passes through the shell and a connecting cylinder is slidably provided, a spring is arranged between the inner wall of the connecting cylinder and the threaded rod, a transmission assembly is arranged in the installation cavity, and the driving assembly drives the sleeve to rotate through the transmission assembly.

[0007] Furthermore, the driving assembly includes a dual-axis motor, a fixing plate is fixedly arranged in the installation cavity, the dual-axis motor is fixedly arranged on the fixing plate, the output ends of the dual-axis motors are fixedly arranged with screw rods, the screw rods are threadedly connected to the corresponding limit plates, and the threads of the two screw rods have opposite rotation directions, and the screw rods drive the sleeve to rotate through the transmission assembly.

[0008] Furthermore, the transmission assembly includes a connecting shaft, which is rotatably arranged in the installation cavity, a second bevel gear is fixedly arranged at one end of the connecting shaft, a first bevel gear is fixedly sleeved on one of the screw rods, the first bevel gear is meshingly connected with the second bevel gear, two first pulleys are fixedly sleeved on the connecting shaft, a second pulley is fixedly arranged at one end of the sleeve, and the second pulley and the corresponding first pulley sleeve are provided with the same belt.

[0009] Furthermore, sliding grooves are symmetrically provided in the installation cavity, a sliding plate is slidably provided in the sliding groove, and the sliding plate is fixedly connected to the corresponding threaded rod.

[0010] Furthermore, a magnet is fixedly provided on a side of the connecting tube away from the threaded rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] A driving assembly is provided in the installation cavity to drive the two limit plates to move toward each other. The driving assembly drives the sleeve to rotate through the transmission assembly at the same time, and the sleeve rotation drives the threaded rod to rotate. The dual-axis motor is started to drive the two screws to rotate, and the two screws drive the two limit plates to move toward each other. The two limit plates move toward each other and drive the roller to move, so that the roller is slidably connected to the outer periphery of the bolt sleeve, thereby limiting and stabilizing the bolt sleeve. The screw rotates while driving the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the connecting shaft to rotate, the connecting shaft drives the two first pulleys to rotate, the two first pulleys drive the corresponding second pulleys to rotate through the belt, the second pulley drives the sleeve to rotate, the sleeve rotation drives the threaded rod to move outside the housing, the threaded rod drives the connecting tube to move outward, and the connecting tube moves outward and is adsorbed on the external obstruction through the magnet, so as to avoid the housing from rotating during the bolt installation process. Thereby, in the process of limiting the bolt sleeve by the limit plate, the connecting tube can also be attached to the external obstruction through the magnet at the same time, the operation steps are simple, and the work efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0014] Figure 2 It is the position diagram of the driving motor of the structure of the utility model;

[0015] Figure 3 It is a cross-sectional view of the structure of the utility model;

[0016] Figure 4 It is an enlarged view of point A of the structure of the present utility model.

[0017] In the figure: 1. lithium battery; 2. handle; 3. switch; 4. housing; 5. fixing plate; 6. dual-axis motor; 7. screw rod; 8. limit plate; 9. first bevel gear; 10. second bevel gear; 11. connecting shaft; 12. first pulley; 13. belt; 14. second pulley; 15. sleeve; 16. threaded rod; 17. spring; 18. connecting cylinder; 19. mounting seat; 20. bolt collar; 21. sliding plate; 22. sliding groove; 23. driving motor. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 4The utility model provides a technical solution: a handheld lithium battery wrench, including a housing 4, a handle 2 is fixedly installed at the bottom of the housing 4, a lithium battery 1 is installed at the bottom of the handle 2, and the lithium battery 1 supplies power to the entire device. A switch 3 is installed on one side of the handle 2. A mounting seat 19 is rotatably installed on one side of the housing 4, and a bolt collar 20 is installed on the mounting seat 19. Figure 2 As shown, a driving motor 23 is fixedly installed in the housing 4 , and an output end of the driving motor 23 passes through the housing 4 and is fixedly mounted with the mounting seat 19 .

[0020] Two symmetrically arranged limit plates 8 are slidably mounted on the housing 4. The two limit plates 8 are arranged horizontally. One end of the limit plate 8 passes through the housing 4 and is mounted with a roller. The roller is slidably matched with the bolt collar 20. An installation cavity is provided in the housing 4. Two symmetrically arranged limit holes are provided on one side of the housing 4. Both limit holes are connected to the inside of the installation cavity. The limit plates 8 are inserted into the corresponding limit holes, and the limit plates 8 are slidably mounted with the corresponding limit holes. One side of the limit plate 8 is located in the installation cavity, and the other side of the limit plate 8 is located outside the housing 4. A roller is mounted on one end of the limit plate 8 located outside the housing 4.

[0021] A driving assembly for driving the two limit plates 8 to move toward each other is installed in the installation cavity. Two sleeves 15 arranged symmetrically one above the other are rotatably installed in the installation cavity. A threaded rod 16 is threadedly connected in both sleeves 15. One end of the threaded rod 16 passes through the housing 4 and is slidably sleeved with a connecting tube 18. The threaded rod 16 is threadedly mounted with the housing 4. The threaded rod 16 is arranged horizontally, and one side of the threaded rod 16 is located in the installation cavity, and the other side of the threaded rod 16 is located outside the housing 4. The end of the threaded rod 16 located outside the housing 4 is slidably sleeved with a connecting tube 18, and a magnet is fixedly installed on the side of the connecting tube 18 away from the threaded rod 16.

[0022] A spring 17 is installed in the connecting tube 18, one end of the spring 17 is fixedly mounted with the inner wall of the connecting tube 18, and the other end of the spring 17 is fixedly mounted with the end surface of the threaded rod 16. A transmission assembly is installed in the installation cavity, and the drive assembly drives the sleeve 15 to rotate through the transmission assembly.

[0023] The driving assembly includes a dual-axis motor 6, a fixing plate 5 is fixedly installed in the installation cavity, and the dual-axis motor 6 is fixedly installed on the top of the fixing plate 5, and the fixing plate 5 supports the dual-axis motor 6. The output ends of the dual-axis motor 6 are fixedly installed with screw rods 7, which pass through the corresponding limit plates 8 and are threadedly installed with the corresponding limit plates 8, and the threads of the two screw rods 7 are rotated in opposite directions. The screw rods 7 drive the sleeve 15 to rotate through the transmission assembly.

[0024] The transmission assembly includes a connecting shaft 11, which is rotatably mounted on the inner wall of the mounting cavity, and a second bevel gear 10 is fixedly mounted on one end of the connecting shaft 11, and a first bevel gear 9 is fixedly sleeved on one of the screw rods 7, and the first bevel gear 9 is meshed and connected with the second bevel gear 10. Two first pulleys 12 are also fixedly sleeved on the connecting shaft 11, and a second pulley 14 is fixedly mounted on one end of the sleeve 15, and the second pulley 14 and the corresponding first pulley 12 are sleeved with the same belt 13.

[0025] Sliding grooves 22 are symmetrically provided in the installation cavity, and a sliding plate 21 is slidably installed in the sliding groove 22 . One end of the threaded rod 16 located in the installation cavity is fixedly matched with the corresponding sliding plate 21 .

[0026] The lithium battery 1 is electrically connected to the switch 3 , and the switch 3 is electrically connected to the driving motor 23 and the dual-axis motor 6 respectively.

[0027] The working principle of the handheld lithium battery wrench provided by the utility model is as follows:

[0028] When installing the bolt, install the appropriate bolt collar 20 on the mounting seat 19, clamp the bolt collar 20 on the corresponding bolt, and select a suitable external blocker in the rotation direction of the bolt collar 20 according to the position of the wrench on the external device. Then start the dual-axis motor 6 through the switch 3 to drive the two screws 7 to rotate, the two screws 7 drive the two limit plates 8 to move toward each other, and the two limit plates 8 move toward each other to drive the roller to move, so that the roller is slidably connected to the outer periphery of the bolt collar 20, thereby limiting and stabilizing the bolt collar 20.

[0029] As the screw rod 7 rotates, it drives the first bevel gear 9 to rotate, the first bevel gear 9 drives the second bevel gear 10 to rotate, the second bevel gear 10 drives the connecting shaft 11 to rotate, the connecting shaft 11 drives the two first pulleys 12 to rotate, the two first pulleys 12 drive the corresponding second pulleys 14 to rotate through the belt 13, the second pulley 14 drives the sleeve 15 to rotate, the rotation of the sleeve 15 drives the threaded rod 16 to move left, the threaded rod 16 moves to the left, it drives the sliding plate 21 to move, the sliding plate 21 moves and slides along the sliding groove 22, thereby stabilizing and guiding the threaded rod 16 to move to the left.

[0030] The threaded rod 16 simultaneously drives the connecting tube 18 to move leftward, and the connecting tube 18 moves leftward and is adsorbed on the external obstacle through the magnet. When the torque of the bolt collar 20 is too large and drives the shell 4 to rotate, the shell 4 applies the torque to the external obstacle through the threaded rod 16 and the connecting tube 18 to prevent the shell 4 from rotating, thereby effectively preventing the shell 4 from driving the staff's hands to rotate through the handle 2, and protecting the staff's hands to prevent safety hazards.

[0031] Then, the drive motor 23 is started through the switch 3, and the drive motor 23 drives the mounting seat 19 to rotate, and the mounting seat 19 drives the bolt collar 20 to rotate, and the bolt collar 20 drives the bolt to rotate, thereby completing the installation of the bolt. During the installation of the bolt, the housing 4 pushes the bolt collar 20 to move leftward. While the bolt collar 20 drives the bolt to rotate, the bolt also moves to the left. Since a spring 17 is installed in the connecting tube 18, the housing 4 compresses the spring 17 when driving the threaded rod 16 to move to the left, so that the connecting tube 18 will not hinder the threaded rod 16 from moving to the left.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A handheld lithium battery wrench, comprising a housing (4), characterized in that: A handle (2) is fixedly provided at the bottom of the shell (4), and a lithium battery (1) and a switch (3) are provided on the handle (2). A mounting seat (19) is rotatably provided on one side of the shell (4), and a bolt collar (20) is provided on the mounting seat (19). A driving motor (23) is provided in the shell (4), and an output end of the driving motor (23) is fixedly connected to the mounting seat (19). Two symmetrically arranged limiting plates (8) are slidably provided on the shell (4), and one end of the limiting plate (8) passes through the shell (4) and is provided with a roller. The housing (4) is provided with an installation cavity, a driving assembly for driving two limit plates (8) to move toward each other is arranged in the installation cavity, a sleeve (15) is symmetrically arranged in the installation cavity for rotation, a threaded rod (16) is connected to the inner thread of the sleeve (15), one end of the threaded rod (16) passes through the housing (4) and a connecting tube (18) is provided on the sliding sleeve, a spring (17) is provided between the inner wall of the connecting tube (18) and the threaded rod (16), a transmission assembly is arranged in the installation cavity, and the driving assembly drives the sleeve (15) to rotate through the transmission assembly.

2. The handheld lithium battery wrench according to claim 1, characterized in that: The driving assembly comprises a double-axis motor (6), a fixing plate (5) is fixedly arranged in the installation cavity, the double-axis motor (6) is fixedly arranged on the fixing plate (5), the output ends of the double-axis motor (6) are fixedly arranged with screw rods (7), the screw rods (7) are threadedly connected to the corresponding limit plates (8), and the threads of the two screw rods (7) are in opposite directions. The screw rods (7) drive the sleeve (15) to rotate through the transmission assembly.

3. The handheld lithium battery wrench according to claim 2, characterized in that: The transmission assembly comprises a connecting shaft (11), the connecting shaft (11) is rotatably arranged in the installation cavity, a second bevel gear (10) is fixedly arranged at one end of the connecting shaft (11), a first bevel gear (9) is fixedly sleeved on one of the screw rods (7), the first bevel gear (9) is meshingly connected with the second bevel gear (10), two first pulleys (12) are fixedly sleeved on the connecting shaft (11), a second pulley (14) is fixedly arranged at one end of the sleeve (15), and the second pulley (14) and the corresponding first pulley (12) are sleeved with the same belt (13).

4. The handheld lithium battery wrench according to claim 1, characterized in that: The installation cavity is symmetrically provided with sliding grooves (22), a sliding plate (21) is slidably arranged in the sliding groove (22), and the sliding plate (21) is fixedly connected to the corresponding threaded rod (16).

5. The handheld lithium battery wrench according to claim 1, characterized in that: A magnet is fixedly arranged on one side of the connecting tube (18) away from the threaded rod (16).

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