High-torque four-claw rotating shaft ratchet screwdriver

Abstract

The utility model relates to the technical field of manual tools, and discloses a high-torque four-claw rotating shaft ratchet screwdriver which comprises a handle and an anti-skid rubber sleeve, the anti-skid rubber sleeve is fixedly installed on the outer surface of the handle, a fixed installation head is fixedly installed at the other end of the handle, a fixed shaft is fixedly installed on the side face of the fixed installation head, and a ratchet wheel is fixedly installed on the fixed shaft. A fastening structure is arranged on the outer side of the fixing shaft, a penetrating through hole is formed in the other end of the fixing shaft, a ratchet wheel structure is fixedly connected to the other end of the spring ball, a shaft sleeve is fixedly installed on the outer side of the ratchet wheel structure, one end of the shaft sleeve is fixedly connected with a rotating structure, and a shaft sleeve cover is fixedly connected to the other end of the shaft sleeve; by means of the unique structural design, efficient transmission of high torque can be achieved, the fixing shaft is connected with the cross-shaped installation groove in a cross-shaped matched mode, stability of torque transmission is guaranteed, and power loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of manual tool technology, specifically a high-torque four-jaw swivel ratchet screwdriver. Background Technology

[0002] Screwdrivers are extremely common tools in many fields such as machinery manufacturing, electronic equipment repair, and furniture assembly. In actual operation, we often encounter screws with a high degree of tightness. Ordinary screwdrivers cannot provide enough torque to easily turn them, which not only consumes a lot of manpower and time, but may also cause the screws to slip and wear due to the inability to apply force effectively, affecting the progress and quality of the work. Therefore, high-torque screwdrivers that can output greater torque are particularly important in these scenarios, as they can help operators complete the task of tightening or loosening screws more efficiently.

[0003] However, existing high-torque screwdrivers have many technical shortcomings. Some products have unreasonable shaft designs, resulting in low torque transmission efficiency and power loss during operation, making it difficult to fully utilize the advantages of high torque. In addition, the reliability of the ratchet structure is poor, and problems such as jamming and malfunction are prone to occur when frequently changing the rotation direction. This not only seriously affects work efficiency, but may also lead to errors in critical operations, causing equipment damage or scrapping of parts, increasing production costs and maintenance difficulty. To address these issues, we have proposed a high-torque four-jaw swivel ratchet screwdriver. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a high-torque four-jaw swivel ratchet screwdriver, which solves the aforementioned problems.

[0006] (II) Technical Solution

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a high-torque four-jaw rotary ratchet screwdriver, including a handle and an anti-slip rubber sleeve. The anti-slip rubber sleeve is fixedly installed on the outer surface of the handle. A fixed mounting head is fixedly installed on the other end of the handle. A fixed shaft is fixedly installed on the side of the fixed mounting head. A fastening structure is provided on the outer side of the fixed shaft. A through hole is opened at the other end of the fixed shaft. A rotating structure is provided in the through hole of the fixed shaft. A spring ball is fixedly installed at the end face of the fixed shaft. A ratchet structure is fixedly connected to the other end of the spring ball. A bushing is fixedly installed on the outer side of the ratchet structure. One end of the bushing is fixedly connected to the rotating structure. A bushing cover is fixedly connected to the other end of the bushing. A screwdriver head mounting structure is provided at the other end of the bushing cover.

[0008] Preferably, the fixed mounting head has a cross-shaped mounting groove on the side corresponding to the side connected to the handle. A fixed shaft is fixedly installed in the cross-shaped mounting groove. The end of the fixed shaft connected to the cross-shaped mounting groove is cross-shaped, and the cross end face of the fixed shaft is engaged with the cross-shaped mounting groove.

[0009] Preferably, the fastening structure includes a fastening nut and a fastening thread. The outer side of the fixed shaft has a fastening thread on the side of one end of the cross shape. The fastening nut is movably installed on the outer side of the fixed shaft through the fastening thread, and the inner side of the fastening nut is threadedly connected to the fastening thread.

[0010] Preferably, the rotating structure includes a connector and a connecting pin. The connector is U-shaped and has through holes on both sides. The through holes of the connector are concentric with the holes in the fixed shaft. The connector is rotatably mounted on the fixed shaft via the connecting pin, and a bushing is fixedly connected to the side of the connector.

[0011] Preferably, the ratchet structure includes a ratchet housing, a ratchet, ratchet teeth, and a limiting block. A spring ball at the end face of the fixed shaft passes through the side of the connector and is fixedly connected to the ratchet housing. One end face of the ratchet housing is fixedly connected to the side of the connector. A ratchet is fixedly installed inside the ratchet housing. A ratchet tooth is formed on the outer surface of the middle part of the ratchet. A limiting block is installed inside the ratchet tooth. The outer side of the limiting block is fixedly connected to the inner surface of the ratchet housing.

[0012] Preferably, the screwdriver head mounting structure includes a drill sleeve, a screwdriver head mounting groove, and a screwdriver head. The drill sleeve is fixedly mounted on the other side of the bushing cover, and a screwdriver head mounting groove is provided at the end face of the drill sleeve. A screwdriver head is movably mounted in the screwdriver head mounting groove.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a high-torque four-jaw swivel ratchet screwdriver, which has the following advantages:

[0015] 1. This high-torque four-jaw swivel ratchet screwdriver, through its unique structural design, achieves efficient transmission of high torque. The cross-shaped connection between the fixed shaft and the cross mounting slot ensures the stability of torque transmission and reduces power loss. The fastening nut and fastening thread in the fastening structure further solidify the connection and prevent loosening during torque transmission. It can provide sufficient torque to tighten screws in one go, greatly shortening operation time, improving maintenance efficiency, making maintenance work easier and more efficient, and significantly improving the overall work progress.

[0016] 2. This high-torque four-jaw swivel ratchet screwdriver features a rationally designed ratchet structure. A spring ball on the fixed shaft end face connects to the ratchet, and the side of the ratchet is fixed to the connector. A limit block installed inside the ratchet teeth is fixed to the bushing, making the entire ratchet structure stable and reliable. This ensures stable operation even when frequently changing rotation directions, allowing for precise control of the rotation direction. It greatly reduces the risk of operational errors caused by ratchet failure, ensures equipment safety, reduces unnecessary economic losses, and improves the accuracy and stability of operation.

[0017] 3. This high-torque four-jaw swivel ratchet screwdriver features a screwdriver head mounting structure including a drill bushing, a screwdriver head mounting slot, and the screwdriver head. The screwdriver head can be installed movably within the mounting slot, allowing for convenient and quick replacement of different types and sizes of screwdriver heads. Simply prepare multiple screwdriver heads of different sizes and easily switch between them according to actual needs. This flexibly handles various screws, significantly enhancing the screwdriver's applicability, improving work convenience and efficiency, reducing the complexity of tool carrying, and making operation more intuitive. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the spring ball of this utility model;

[0020] Figure 3 This is a schematic diagram of the fixed shaft of this utility model;

[0021] Figure 4 for Figure 3 A magnified view of part A in the diagram;

[0022] Figure 5 for Figure 3 A magnified view of part B in the diagram.

[0023] In the diagram: 1. Handle; 2. Anti-slip rubber sleeve; 3. Fixed mounting head; 4. Phillips head mounting slot; 5. Fastening nut; 6. Fixed shaft; 7. Fastening thread; 8. Connector; 9. Connecting pin; 10. Spring ball; 11. Bushing; 12. Ratchet housing; 13. Bushing cover; 14. Ratchet; 15. Ratchet tooth; 16. Limiting block; 17. Drill sleeve; 18. Screwdriver head mounting slot; 19. Screwdriver head. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 A high-torque four-jaw swivel ratchet screwdriver includes a handle 1 and an anti-slip rubber sleeve 2. The anti-slip rubber sleeve 2 is fixedly installed on the outer surface of the handle 1. A fixed mounting head 3 is fixedly installed on the other end of the handle 1. A fixed shaft 6 is fixedly installed on the side of the fixed mounting head 3. A fastening structure is provided on the outer side of the fixed shaft 6. A through hole is opened at the other end of the fixed shaft 6. A rotating structure is provided in the through hole of the fixed shaft 6. A spring ball 10 is fixedly installed at the end face of the fixed shaft 6. A ratchet structure is fixedly connected to the other end of the spring ball 10. A bushing 11 is fixedly installed on the outer side of the ratchet structure. One end of the bushing 11 is fixedly connected to the rotating structure. A bushing cover 13 is fixedly connected to the other end of the bushing 11. A screwdriver head mounting structure is provided at the other end of the bushing cover 13.

[0026] Furthermore, the fixed mounting head 3 has a cross-shaped mounting groove 4 on the other side corresponding to the handle 1. A fixed shaft 6 is fixedly installed in the cross-shaped mounting groove 4. The end of the fixed shaft 6 connected to the cross-shaped mounting groove 4 is cross-shaped. The cross end face of the fixed shaft 6 is engaged with the cross-shaped mounting groove 4. The cross-shaped connection design of the cross-shaped mounting groove 4 and the fixed shaft 6 not only ensures stable torque transmission, but also plays a role in precise positioning of the fixed shaft 6. During manufacturing and assembly, this design allows the fixed shaft 6 to be installed quickly and accurately, improving production efficiency. Moreover, due to its tight fit, it can effectively reduce the shaking of the fixed shaft 6 in the fixed mounting head 3 during long-term use. Even when facing high-intensity torque transmission and frequent operation, it can maintain the stability of the structure and extend the service life of the entire screwdriver.

[0027] Furthermore, the fastening structure includes a fastening nut 5 and a fastening thread 7. The fastening thread 7 is provided on the side of the cross-shaped end of the outer surface of the fixed shaft 6. The fastening nut 5 is movably installed on the outer surface of the fixed shaft 6 through the fastening thread 7. The inner side of the fastening nut 5 is threadedly connected to the fastening thread 7. The fastening structure formed by the fastening nut 5 and the fastening thread 7 not only strengthens the connection, but also allows for flexible adjustment of the tightness according to different working scenarios and needs. In some work with high torque accuracy requirements, such as the maintenance of precision instruments, operators can finely adjust the fastening nut 5 to precisely control the tightness of the connection between the fixed shaft 6 and other components, thereby ensuring the stability and accuracy of the screwdriver when transmitting torque. In addition, the outer surface of the fastening nut 5 is designed with easy-to-operate textures or shapes, making it convenient for users to tighten or loosen the screws with their fingers or auxiliary tools, thus improving ease of use.

[0028] Furthermore, the rotating structure includes a connector 8 and a connecting pin 9. The connector 8 is U-shaped, with through holes on both sides. The through holes of the connector 8 are concentric with the holes in the fixed shaft 6. The connector 8 is rotatably mounted on the fixed shaft 6 via the connecting pin 9. A bushing 11 is fixedly connected to the side of the connector 8. The connecting pin 9 plays a crucial role in positioning and connecting in the rotating structure. It not only connects the connector 8 and the fixed shaft 6 together, allowing the connector 8 to rotate around the fixed shaft 6, but also restricts the axial displacement of the connector 8 during rotation, ensuring that the rotation of the connector 8 is more stable and reliable. The U-shaped connector 8 also increases the connection area with the bushing 11, making the connection between the two more robust and enabling them to work together better when transmitting torque.

[0029] Furthermore, the ratchet structure includes a ratchet housing 12, a ratchet 14, ratchet teeth 15, and a limiting block 16. A spring ball 10 at the end face of the fixed shaft 6 passes through the side of the connector 8 and is fixedly connected to the ratchet housing 12. One end face of the ratchet housing 12 is fixedly connected to the side of the connector 8. The ratchet 14 is fixedly installed inside the ratchet housing 12. A ratchet tooth 15 is formed on the outer surface of the middle part of the ratchet 14. A limiting block 16 is installed inside the ratchet tooth 15. The outer side of the limiting block 16 is fixedly connected to the inner surface of the ratchet housing 12. The design of the ratchet tooth 15 and the limiting block 16, in addition to realizing unidirectional or bidirectional rotation control, also has an overload protection function. When the operator encounters excessive resistance during the screw tightening process, causing the torque to exceed the normal range, the engagement between the ratchet tooth 15 and the limiting block 16 will slip, avoiding damage to the internal structure of the screwdriver or the screw itself due to excessive torque.

[0030] Furthermore, the screwdriver head mounting structure includes a drill sleeve 17, a screwdriver head mounting groove 18, and a screwdriver head 19. The drill sleeve 17 is fixedly mounted on the other side of the bushing cover 13. The end face of the drill sleeve 17 has a screwdriver head mounting groove 18, and the screwdriver head 19 is movably installed in the screwdriver head mounting groove 18. In the screwdriver head mounting structure, the drill sleeve 17 not only serves to fix the screwdriver head mounting groove 18, but also guides the insertion and removal of the screwdriver head 19. The inner wall of the drill sleeve 17 is usually designed to be relatively smooth, so that the operation can be smoother and the resistance can be reduced when replacing the screwdriver head 19. The dimensional accuracy design of the screwdriver head mounting groove 18 is very critical. It must be precisely matched with various standard specifications of screwdriver heads 19 to ensure that the screwdriver head 19 will not be loose after installation, and to ensure that the torque can be stably transmitted to the screwdriver head during the screw tightening process.

[0031] Structural Description:

[0032] Handle 1: Handle 1 is the grip part of the screwdriver. It is covered with a non-slip rubber sleeve 2, which conforms to the ergonomic design, makes it easy to apply force, and can effectively improve the comfort and stability of operation. It is a key part of the operator's hand during use.

[0033] Anti-slip rubber sleeve 2: The anti-slip rubber sleeve 2 is tightly fixed to the outer surface of the handle 1. The anti-slip rubber sleeve 2 is soft and textured, which can greatly increase the friction between the hand and the handle, prevent the screwdriver from accidentally slipping during use, and ensure operational safety.

[0034] Fixed mounting head 3: One end of the fixed mounting head 3 is connected to the handle 1, and the other end has a cross mounting groove 4 for mounting the fixed shaft 6. It plays a connecting and positioning role in the whole structure, firmly supports the fixed shaft 6, and ensures smooth torque transmission.

[0035] Cross mounting groove 4: The cross mounting groove 4 is located on the fixed mounting head 3 and precisely matches the cross-shaped end of the fixed shaft 6. This design not only ensures the accurate installation position of the fixed shaft 6, but also stably transmits torque and reduces power loss.

[0036] Fastening nut 5: Fastening nut 5 is installed on the outside of fixed shaft 6 through fastening thread 7. It can adjust the tightness of the connecting parts, strengthen the connection, prevent the parts from loosening during torque transmission, and ensure the stable performance of the screwdriver.

[0037] Fixed shaft 6: Fixed shaft 6 is a key component of the transmission. One end is connected to the fixed mounting head 3 and has a fastening structure on the outside. The other end has a through hole for mounting the rotating structure. It is responsible for transmitting torque, connecting various components, and maintaining the operation of the overall structure.

[0038] Fastening thread 7: Fastening thread 7 is provided on the outer side of the fixed shaft 6 and cooperates with the fastening nut 5 to provide a turning track for the fastening nut. Through the threaded connection between the two, the fastening and adjustment functions of the connected parts are realized.

[0039] Connector 8: Connector 8 is U-shaped and is installed on the fixed shaft 6 and connected to the bushing 11 via connecting pin 9. It can rotate flexibly around the fixed shaft 6, driving the bushing 11 and providing the basis for power transmission for the operation of the ratchet structure.

[0040] Connecting pin 9: Connecting pin 9 connects the fixed shaft 6 and the connector 8, allowing the connector 8 to rotate around the fixed shaft 6. It restricts the axial displacement of the connector 8, ensuring smooth rotation of the connector 8 and guaranteeing stable power transmission.

[0041] Spring ball 10: Spring ball 10 is installed on the end face of fixed shaft 6 and connects to ratchet structure. It plays a positioning and buffering role, ensuring that the ratchet structure is firmly connected to fixed shaft 6, reducing operating impact, and extending screwdriver life.

[0042] Bushing 11: Bushing 11 connects the rotating structure and the ratchet structure. One end is fixed to the connector 8, and the other end is connected to the bushing cover 13. It transmits power, provides installation space for internal components, and protects the internal structure from external interference.

[0043] Ratchet housing 12: The ratchet housing 12 is connected to the connector 8 and the spring ball 10. The ratchet 14 is fixedly installed inside. It protects the ratchet 14, provides a mounting base for the ratchet 15 and the limit block 16, and participates in the operation of the overall transmission structure.

[0044] Bushing cover 13: Bushing cover 13 is fixed to the other end of bushing 11, sealing the internal structure. It further protects components such as ratchet structure, while providing an installation platform for screwdriver head mounting structure and maintaining the integrity of the overall structure.

[0045] Ratchet 14: The ratchet 14 is installed inside the ratchet housing 12 and has ratchet teeth 15 in the middle. It rotates under the drive of the connector 8. The ratchet teeth 15 cooperate with the limit block 16 to control the rotation direction of the screwdriver and realize the screw tightening or loosening operation.

[0046] Ratchet 15: The ratchet 15 is distributed on the outer surface of the middle part of the ratchet 14 and cooperates with the limit block 16. They control the rotation direction of the ratchet 14, realize the screwdriver's one-way or two-way rotation, and also have an overload protection function to prevent damage to the parts.

[0047] Limiting block 16: The limiting block 16 is installed inside the ratchet 15, and its outer side is fixed to the inner surface of the ratchet housing 12. It works in conjunction with the ratchet 15 to precisely control the rotation of the ratchet 14, ensuring the stable operation of the screwdriver and avoiding operational errors.

[0048] Drill sleeve 17: The drill sleeve 17 is fixed to the side of the bushing cover 13. A screwdriver head mounting groove 18 is opened on the end face. It fixes the mounting groove, guides the screwdriver head to be inserted and pulled out, facilitates the replacement of screwdriver head, and improves the applicability of screwdriver.

[0049] Screwdriver head mounting slot 18: The screwdriver head mounting slot 18 is located on the end face of the drill sleeve 17 and is used to install the screwdriver head 19. Its size is precisely matched with the screwdriver head to ensure a stable installation and to ensure that the torque is stably transmitted to the screwdriver head.

[0050] Screwdriver tip 19: The screwdriver tip 19 is movably installed in the screwdriver tip mounting slot 18 and can be replaced according to the type of screw. It directly acts on the screw to achieve the core function of tightening or loosening the screw.

[0051] Working Principle: During use, the operator grips handle 1. The anti-slip rubber sleeve 2 increases the friction between the hand and the handle, ensuring a stable grip and preventing the screwdriver from slipping during force application, facilitating force application. The fixed mounting head 3 is connected to handle 1, and the fixed shaft 6 on its side is a key connecting component of the entire transmission structure. The fixed shaft 6 is connected to the cross-shaped mounting groove 4 through a cross-shaped end face. This unique design makes the fixed shaft 6 more stable when transmitting torque. When rotating handle 1, the fixed shaft 6 can reliably rotate with the handle, avoiding relative displacement, ensuring stable torque transmission, and reducing power loss. During the installation or removal of screws, when it is necessary to adjust the relative position of the fixed shaft 6 with other components or enhance the connection stability, it can be adjusted by rotating... This is achieved by rotating the fastening nut 5. Since the fastening nut 5 is threadedly connected to the fastening thread 7 on the outer side of the fixed shaft 6, rotating the fastening nut 5 will cause it to move along the fastening thread 7, thereby tightening or loosening the relevant components, which will strengthen the connection and prevent the fixed shaft 6 from loosening during torque transmission, ensuring the stability of the entire transmission system and allowing the screwdriver to transmit torque more effectively. The connector 8 is U-shaped, with through holes on both sides concentric with the holes in the fixed shaft 6, and is rotatably mounted on the fixed shaft 6 via the connecting pin 9. When the fixed shaft 6 rotates with the handle 1, the connector 8 can rotate flexibly on the fixed shaft 6. The connecting sleeve 11 is fixedly attached to the side of the connector 8. Therefore, the rotation of the connector 8 will drive the sleeve 11 to rotate synchronously, providing power transmission for the subsequent operation of the ratchet structure. The spring ball 10 is installed on the end face of the fixed shaft 6, and its other end is connected to the ratchet structure. During operation, the spring ball 10 serves a positioning and buffering function. It not only ensures a stable connection between the ratchet structure and the fixed shaft 6, but also mitigates impact forces during operation, protects the internal structure, and extends the screwdriver's lifespan. The spring ball 10 on the end face of the fixed shaft 6 passes through the side of the connector 8 and is fixed to the ratchet 14. The side of the ratchet 14 is also fixed to the side of the connector 8. When the connector 8 drives the bushing 11 to rotate, the ratchet 14 rotates accordingly. The ratchet teeth 15 on the outer surface of the middle part of the ratchet 14 cooperate with the limit block 16 to achieve unidirectional or bidirectional rotation control. When tightening the screw, the operator turns the handle 1 clockwise. The ratchet 14 rotates clockwise, and the ratchet teeth 15, under the action of the limit block 16, ensure the stable rotation of the ratchet 14, driving the bushing 11 and the screwdriver head 19 to rotate clockwise, thus tightening the screw. When it is necessary to loosen the screw, the handle 1 is turned counterclockwise, and the ratchet 14 rotates counterclockwise. Similarly, under the synergistic action of the ratchet teeth 15 and the limit block 16, the bushing 11 and the screwdriver head 19 are stably driven to rotate counterclockwise, loosening the screw. This ratchet structure design allows the screwdriver to work stably and precisely control the rotation direction even when frequently changing the rotation direction, avoiding problems such as jamming and malfunction, and greatly reducing the risk of operational errors. The bushing 11, as a key component connecting the rotating structure and the ratchet structure, plays a role in transmitting power and protecting the internal structure.One end of the bushing 11 is fixed to the connector 8, and the other end is connected to the bushing cover 13. During operation, the bushing 11 transmits the rotation of the connector 8 to the ratchet structure. Simultaneously, it provides mounting positions for internal components such as the ratchet 14 and the limiting block 16, protecting these components from external interference and damage. The bushing cover 13 is fixed to the other end of the bushing 11. Its main function is to enclose the internal structure, further protecting components such as the ratchet structure, and providing a mounting base for the screwdriver head mounting structure. The drill sleeve 17 is fixed to the side of the bushing cover 13, and its end face has a screwdriver head mounting groove 18 for mounting screwdriver heads 19. Screwdriver heads 19 can be installed movably within the mounting groove 18, allowing users to quickly change screwdriver heads according to different screw types and specifications. In actual operation, when encountering a Phillips head screw, a Phillips head screwdriver head can be selected and installed in the mounting groove 18; when encountering a slotted head screw, a slotted head screwdriver head is used, thus flexibly handling various screws and significantly enhancing the screwdriver's applicability.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high torque four jaw rotating shaft ratchet screwdriver, comprising a handle (1), an anti-skid rubber sleeve (2), characterized in that: The outer surface of the handle (1) is fixedly provided with an anti-skid rubber sleeve (2), the other end of the handle (1) is fixedly provided with a fixed mounting head (3), the side surface of the fixed mounting head (3) is fixedly provided with a fixed shaft (6), the outer side of the fixed shaft (6) is provided with a fastening structure, the other end of the fixed shaft (6) is provided with a through hole, the through hole of the fixed shaft (6) is provided with a rotating structure, the end surface of the fixed shaft (6) is fixedly provided with a spring ball (10), the other end of the spring ball (10) is fixedly connected with a ratchet structure, the outer side of the ratchet structure is fixedly provided with a shaft sleeve (11), one end of the shaft sleeve (11) is fixedly connected with the rotating structure, the other end of the shaft sleeve (11) is fixedly connected with a shaft sleeve cover (13), the other end of the shaft sleeve cover (13) is provided with a screwdriver bit mounting structure.

2. The high torque four jaw rotating shaft ratchet screwdriver according to claim 1, characterized in that: The other side of the fixed mounting head (3) corresponding to the handle (1) is provided with a cross-shaped mounting groove (4), the fixed shaft (6) is fixedly installed in the cross-shaped mounting groove (4), one end of the fixed shaft (6) connected with the cross-shaped mounting groove (4) is cross-shaped, and the cross-shaped end surface of the fixed shaft (6) is connected with the cross-shaped mounting groove (4) in a matched mode.

3. The high torque four jaw rotating shaft ratchet screwdriver according to claim 2, characterized in that: The fastening structure comprises a fastening nut (5) and a fastening thread (7), the outer side surface of the fixed shaft (6) is provided with the fastening thread (7) beside the cross-shaped end, and the fastening nut (5) is movably installed on the outer side surface of the fixed shaft (6) through the fastening thread (7).

4. The high torque four jaw rotating shaft ratchet screwdriver according to claim 1, wherein: The rotating structure comprises a connecting head (8) and a connecting pin (9), the connecting head (8) is U-shaped, through holes are formed in the two side surfaces of the connecting head (8), the through holes of the connecting head (8) are concentric with the holes of the fixed shaft (6), the connecting head (8) is rotatably installed on the fixed shaft (6) through the connecting pin (9), and the side surface of the connecting head (8) is fixedly connected with the shaft sleeve (11).

5. The high torque four jaw rotating shaft ratchet screwdriver according to claim 4, characterized in that: The ratchet structure comprises a ratchet housing (12), a ratchet (14), a ratchet tooth (15) and a limiting block (16), the spring ball (10) at the end surface of the fixed shaft (6) is fixedly connected with the ratchet housing (12) through the side surface of the connecting head (8), one end surface of the ratchet housing (12) is fixedly connected with the side surface of the connecting head (8), the ratchet (14) is fixedly installed in the ratchet housing (12), the ratchet tooth (15) is formed in the outer surface of the middle portion of the ratchet (14), the limiting block (16) is installed in the ratchet tooth (15), and the outer side surface of the limiting block (16) is fixedly connected with the inner surface of the ratchet housing (12).

6. The high torque four jaw rotating shaft ratchet screwdriver according to claim 1, wherein: The screwdriver bit mounting structure comprises a drill sleeve (17), a screwdriver bit mounting groove (18) and a screwdriver bit (19), the drill sleeve (17) is fixedly installed on the other side surface of the shaft sleeve cover (13), the screwdriver bit mounting groove (18) is formed in the end surface of the drill sleeve (17), and the screwdriver bit (19) is movably installed in the screwdriver bit mounting groove (18).

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