Universal adaptive adjustable ratchet wrench and working method

Abstract

The invention provides a global adaptive adjustable ratchet wrench and a working method, and belongs to the technical field of ratchet wrenchs.The global adaptive adjustable ratchet wrench comprises a sliding barrel, a connecting base is fixedly installed on the outer surface of the sliding barrel, a stress platform is rotatably installed on the outer surface of the connecting base, and a single ratchet wheel is rotatably installed on the inner surface of the stress platform; a mounting seat is fixedly mounted on the inner surface of the single ratchet wheel, so that high-strength bearing and low-torque smoothness are unified, impact resistance and abrasion resistance are greatly improved, the fundamental problem that a single-pawl structure is weak in torque bearing is solved, simplicity of single-pawl single-point meshing is reserved, linkage clamping stagnation of a double-pawl structure under low torque is avoided, and the service life of the double-pawl structure is prolonged. By means of the technical scheme, smooth operation of a full-torque section from a small-specification electronic bolt to a large-specification mechanical bolt is guaranteed, meanwhile, rapid and stable adaptation of sleeves of multiple specifications is achieved, reliability and precision of power transmission are guaranteed, and the high requirements of field operation for tool universality and efficiency are met.

Description

Technical Field

[0001] This invention belongs to the field of ratchet wrench technology, specifically relating to a fully adaptable adjustable ratchet wrench and its working method. Background Technology

[0002] Manual ratchet wrenches, as a fundamental tool in mechanical assembly and maintenance, utilize a unidirectional transmission mechanism consisting of a ratchet and pawl to continuously tighten bolts in confined spaces without repeatedly disassembling the wrench, significantly improving work efficiency. Currently, the mainstream manual ratchet wrenches on the market are mainly divided into two types: single-pawl and double-pawl. However, both of these structures have inherent defects and cannot fully meet diverse operational needs.

[0003] Single-pawl wrenches have a simple structure and are relatively smooth when operating with low torque. However, they rely solely on the line contact between a single pawl and the ratchet teeth to transmit the entire torque, resulting in highly concentrated force. During high-torque operations (such as disassembling or assembling bolts on heavy equipment), this can easily lead to deformation or breakage of the pawl teeth, or premature wear of the ratchet teeth, limiting their load-bearing capacity. Furthermore, single-point engagement is unstable when the tool is tilted or under uneven force, easily causing "tooth skipping," which can lead to a sudden interruption of torque transmission and pose a safety hazard.

[0004] Double pawl wrenches employ two pawls that work alternately, distributing the force points to improve overall load-bearing capacity and engagement stability, making them suitable for high-strength applications. However, the double pawl structure is complex, and its linkage mechanism requires a certain initial force to achieve switching. In low-torque scenarios requiring the tightening of small bolts such as M3 and M4, insufficient torque often leads to "jamming" as the double pawls cannot smoothly switch, resulting in a stiff and unresponsive feel, unlike single pawl wrenches. Furthermore, the double pawl structure has more parts, requiring higher machining and assembly precision, leading to increased manufacturing costs. The increased number of internal components also significantly increases the difficulty of maintenance when dust accumulates, rusts, or springs fail, making it difficult for ordinary users to perform maintenance themselves.

[0005] On the other hand, traditional ratchet wrenches typically only fit sockets of a single size (such as 1 / 4 inch, 3 / 8 inch, or 1 / 2 inch square tenons). When dealing with bolts of different sizes, additional adapters are required, resulting in poor tool versatility. Furthermore, external adapters add connection points, potentially affecting the stability of torque transmission and operating space. Additionally, most wrenches have a fixed direction of force application and a non-variable handle length, making angle adjustment difficult in extremely confined spaces. Moreover, when high torque is required, they rely entirely on the user's arm strength, leading to high operational intensity.

[0006] Therefore, there is an urgent need for a ratchet wrench that can balance high torque strength with low torque smoothness, has the ability to quickly adapt to multiple specifications, and can flexibly adjust the angle and lever arm length to adapt to complex working scenarios. Summary of the Invention

[0007] The purpose of this invention is to provide a fully adaptable adjustable ratchet wrench and its working method, aiming to solve a series of problems in the prior art, such as the weak torque load of single ratchet wrenches, easy tooth skipping, low torque of double ratchet wrenches, easy jamming, complex structure and difficult maintenance, as well as the limited compatibility of traditional wrenches, non-adjustable spatial angle, fixed output torque and inability to be easily enhanced.

[0008] To achieve the above objectives, the present invention provides a fully adaptable adjustable ratchet wrench, comprising a slide cylinder, a connecting seat fixedly mounted on the outer surface of the slide cylinder, a force-bearing platform rotatably mounted on the outer surface of the connecting seat, a single ratchet rotatably mounted on the inner surface of the force-bearing platform, a mounting seat fixedly mounted on the inner surface of the single ratchet, a single pawl slidably mounted on the inner surface of the force-bearing platform, a fixing cover plate fixedly mounted on the outer surface of the force-bearing platform, a retaining seat rotatably mounted on the inner surfaces of the force-bearing platform and the fixing cover plate, a cross-shaped adapter fitting on the inner surface of the retaining seat, and an elastic mechanism provided on the inner surface of the force-bearing platform. The elastic mechanism supports and limits the sliding single pawl, thereby achieving the function of fixing bolts during disassembly or installation.

[0009] Furthermore, the elastic mechanism includes a fixed column fixedly installed on the inner wall of the force-bearing platform, a movable seat rotatably installed on the inner surface of the single pawl, and a first spring fixedly installed on the outer surfaces of both the fixed column and the movable seat.

[0010] Furthermore, a limiting groove is provided on one side of both the force-bearing platform and the fixed cover plate, and a limiting block is integrally formed on both sides of the single pawl. The outer surfaces of the two limiting blocks and the inner surfaces of the two limiting grooves are slidably installed.

[0011] Furthermore, one side of the force-bearing platform is threaded with multiple fixing screws, and one side of each fixing screw movably penetrates the outer surface of the force-bearing platform and the fixing cover plate.

[0012] Furthermore, an extension rod is slidably mounted on the inner surface of the slide cylinder, a connecting rod is threaded onto the inner surface of the extension rod, and a fixing seat is fixedly mounted on the lower side of the connecting rod.

[0013] Furthermore, a rotating disk is provided on the inner surface of the connecting rod, and a rotating seat is rotatably installed on the lower side of the fixed seat, with the rotating seat movably passing through the upper side of the fixed seat and fixedly installed on the lower side of the rotating disk.

[0014] Furthermore, it also includes multiple sets of locking mechanisms. Each set of locking mechanisms includes a sliding groove formed on the outer surface of the fixed base. A connecting groove is formed on the upper side of the fixed base. A locking groove is formed on the inner surface of the slide cylinder. Locking blocks are slidably installed on the inner surfaces of both the sliding groove and the locking groove. Two parallel grooves are formed on the inner surface of the sliding groove. Two limiting rods are fixedly installed on the inner surfaces of the two parallel grooves respectively. Two parallel blocks are slidably installed on the outer surfaces of the two limiting rods respectively. The adjacent ends of the two parallel blocks and the two sides of the locking blocks are fixedly installed respectively. A fourth spring is sleeved on the outer surface of each of the two limiting rods.

[0015] Furthermore, a rotating groove is provided on the upper side of the rotating disk, and a rotating rod is slidably installed on the inner surface of both the rotating groove and the connecting groove. The lower side of the rotating rod moves through the inner surface of the rotating groove and the connecting groove and is fixedly installed on the upper side of the locking block.

[0016] Furthermore, a support shell is fixedly installed on the upper inner wall of the slide cylinder, a support rod is slidably installed on the inner surface of the support shell, a support block is fixedly installed on the lower side of the support rod, the lower side of the support block and the upper side of the extension rod are fixedly installed, a second spring is sleeved on the outer surface of the support shell, and a third spring is provided on the inner surface of the support shell.

[0017] Another aspect of the present invention provides a method for operating a globally adaptable adjustable ratchet wrench, comprising the following steps: S1. Core unidirectional transmission operation: The user moves the slide cylinder in the working direction, and the force is transmitted to the force-bearing platform through the connecting seat. At this time, the single pawl set on the inner surface of the force-bearing platform, under the action of the first spring in the elastic mechanism, has its teeth meshing with the single ratchet, driving the single ratchet to rotate. The torque is transmitted sequentially through the mounting seat fixed to the inner surface of the single ratchet, the cladding mounted on the inner surface of the force-bearing platform and the fixed cover plate, and finally to the cross adapter set on the inner surface of the cladding to drive the sleeve. During this process, the tail of the single pawl forms a surface contact with the specially designed protruding platform on the inner wall of the force-bearing platform, realizing a composite force of "tooth surface line contact + platform surface contact". When the user swings the slide back in the opposite direction, the back of the single ratchet pushes the inclined surface of the single pawl, causing the single pawl to compress the first spring and lift up along the guide inward of the limit blocks on both sides and the corresponding limit groove (34) on the force platform and the fixed cover plate, and slide over the top of the single ratchet tooth to complete the idle reset. S2. Quick fit for multiple sleeve sizes: According to the specifications of the bolt to be operated or the interface size of the existing sleeve, manually rotate the cross adapter to adjust the corresponding specification drive head integrated on it to the working position, and align and insert the drive head into the square drive hole of the sleeve to complete the adaptation without the need for an external adapter. S3. Adjustment of working angle: When the working space is limited, hold the wrench head and rotate it relative to the slide, so that the rotating seat mounted on the lower side of the fixed seat rotates around its axis within the range of 0-180°, thereby adjusting the wrench head to the appropriate working angle. S4. Extension, locking, and use of the extension rod: S4a. Unlocking and Extension: When it is necessary to increase the output torque, the operating component linked to the rotating disk is rotated; the rotational motion of the rotating disk is converted into the axial lifting motion of the rotating rod through the rotating groove opened on its upper part; the lifted rotating rod drives the locking block to overcome the elastic force of the fourth spring through the connecting groove, and retracts radially inward along the sliding groove on the fixed seat (8), so that it is completely disengaged from the current locking groove on the inner wall of the slide cylinder; then, the extension rod is manually pulled out from the slide cylinder to the required length; S4b. Locking after extension: When the extension rod is pulled out and the sliding groove on the fixed seat is aligned with the locking groove corresponding to the extension length on the inner wall of the slide cylinder (1), the rotational force on the operating component is released; the fourth spring drives the locking block to pop out along the guide radial direction of the limit rod through the parallel block, and lock into the corresponding locking groove to lock the extension rod in the extended state; S4c. Torque operation: With the extension rod extended and locked, perform step S1 to remove or install bolts, using the extended lever arm to obtain greater torque; S5. Extension rod retraction and locking: Rotate the operating component again and repeat the unlocking process of step S4a to retract the locking block from the locking groove; push the extension rod back into the slide cylinder until it is fully retracted; when the fixed seat returns to the initial position and its sliding groove aligns with the original locking groove on the inner wall of the slide cylinder, the fourth spring automatically drives the locking block to pop out and engage, locking the extension rod in the hidden state.

[0018] Compared with the prior art, the beneficial effects of the present invention are: 1. By moving the slide cylinder in the working direction, the force is transmitted to the force-bearing platform through the connecting seat. At this time, the single pawl engages with the single ratchet under the action of the first spring, driving it to rotate. This, in turn, drives the cross adapter and sleeve to rotate through the mounting seat and the clamp seat. The tail of the single pawl simultaneously forms a surface contact with the raised platform inside the force-bearing platform, dispersing the concentrated force at the engagement point into a composite load-bearing force of tooth surface line contact plus platform surface contact, significantly improving strength. When the handle swings back, the back of the single ratchet tooth pushes the inclined surface of the single pawl, causing it to compress the first spring and lift up along the guide of the limiting block and the limiting groove, sliding over the top of the ratchet tooth to achieve idle return. When performing rapid adaptation of multiple specifications, manually rotate the cross adapter according to the sleeve specification to select the required drive. Simply align and insert the small, medium, or large pawl into the square hole of the sleeve. The cross-shaped adapter is rotatably installed via a mounting bracket, facilitating quick alignment and replacement without the need for an external adapter. This achieves a balance between high strength load-bearing capacity and smooth operation under low torque, significantly improving impact and wear resistance. It solves the fundamental problem of weak torque load-bearing capacity in single-pawl structures while retaining the simplicity of single-pawl single-point engagement. It avoids the linkage jamming of double-pawl structures under low torque, ensuring smooth operation across the entire torque range from small-sized electronic bolts to large-sized mechanical bolts. It also enables rapid and stable adaptation of multiple sleeve sizes, ensuring the reliability and accuracy of power transmission and meeting the high requirements of tool versatility and efficiency in field operations.

[0019] 2. The rotating base allows for continuous 1° angle adjustment of the wrench head relative to the handle, enabling the tool to flexibly adapt to the working angle requirements of extremely narrow spaces such as engine compartments and pipe gaps. On the other hand, the retractable extension rod design hidden inside the slide allows the extension rod to be pulled out to increase the lever arm length when high torque is needed, significantly increasing the output torque based on the lever principle and reducing the user's operating intensity; after use, it can be retracted and hidden to keep the tool compact, making it easy to carry and store.

[0020] 3. The rotating action causes the rotating disk to rotate accordingly. The rotating groove on the rotating disk acts on the upper end of the rotating rod inserted therein. Due to the arc shape of the groove design, the rotational motion is converted into the axial lifting motion of the rotating rod. The upward-moving rotating rod lifts the locking block fixed to its lower end through the connecting groove. The locking block overcomes the elastic force of the fourth spring and retracts radially towards the center along the sliding groove, so that its head completely disengages from the locking groove of the slide cylinder. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a perspective view of the present invention; Figure 2 This is a first planar sectional view of the present invention; Figure 3 This is a second planar sectional view of the present invention; Figure 4 This is a first perspective sectional view of the present invention; Figure 5 This is a second perspective sectional view of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of section A in the image; Figure 7 This is a first exploded view of the present invention; Figure 8 This is the second exploded view of the present invention.

[0022] In the diagram: 1. Slide cylinder; 2. Connecting seat; 3. Force-bearing platform; 4. Card seat; 5. Fixed cover plate; 6. Cross adapter; 7. Fixing screw; 8. Fixed seat; 9. Single ratchet; 10. Mounting seat; 11. Single pawl; 12. Fixed column; 13. Movable seat; 14. First spring; 15. Connecting rod; 16. Extension rod; 17. Rotating seat; 18. Support shell; 19. Support rod; 20. Support block; 21. Second spring; 22. Third spring; 23. Sliding groove; 24. Locking groove; 25. Locking block; 26. Parallel groove; 27. Limiting rod; 28. Fourth spring; 29. ​​Parallel block; 30. Rotating disk; 31. Rotating groove; 32. Rotating rod; 33. Limiting block; 34. Limiting groove; 35. Connecting groove. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1 Please see Figure 1-8 The present invention provides the following technical solutions: A fully adaptable adjustable ratchet wrench includes a slide cylinder 1, a connecting seat 2 fixedly mounted on the outer surface of the slide cylinder 1, a force-bearing platform 3 rotatably mounted on the outer surface of the connecting seat 2, a single ratchet 9 rotatably mounted on the inner surface of the force-bearing platform 3, a mounting seat 10 fixedly mounted on the inner surface of the single ratchet 9, a single pawl 11 slidably mounted on the inner surface of the force-bearing platform 3, a fixing cover plate 5 fixedly mounted on the outer surface of the force-bearing platform 3, and a locking seat 4 rotatably mounted on the inner surfaces of the force-bearing platform 3 and the fixing cover plate 5. A cross-shaped adapter 6 is fitted on the inner surface of the locking seat 4, and an elastic mechanism is provided on the inner surface of the force-bearing platform 3. The elastic mechanism supports and limits the sliding single pawl 11 to achieve the function of fixing bolts that are being disassembled or installed.

[0025] In a specific embodiment of the present invention, a sliding cylinder 1 is provided as the main body and handle of the wrench. A connecting seat 2 is installed on its outer surface, an extension rod 16 is slidably installed on its inner surface, and a support shell 18 is fixedly installed on its upper inner wall, forming the main hand-held and force-bearing rod of the tool. The interior accommodates and guides the extension and retraction movement of the extension rod 16.

[0026] The force-bearing platform 3 is rotatably mounted on the outer surface of the fixed connecting seat 2, thus serving as a transition component to connect the slide cylinder 1 with the core ratchet and pawl mechanism and allow for angle adjustment. At the same time, a single ratchet 9 is rotatably mounted on the inner surface of the force-bearing platform 3, and a single pawl 11 is slidably mounted. The force-bearing platform 3 is designed with a raised position on its inner wall to disperse the concentrated force when the pawl is engaged, thereby improving the torque bearing capacity.

[0027] The single ratchet 9 and the single pawl 11 engage to form a one-way transmission mechanism. The ratchet 9 is paired with the single ratchet 9 and works in pairs. Its specially designed tail will contact the inner wall platform of the force-bearing platform 3 when engaged, optimizing the force distribution. The fixed mounting seat 10 is used to connect and fix the drive head, and transmits the torque of the single ratchet 9 to the working end.

[0028] The fixed cover plate 5 and the force-bearing platform 3 together form a space to accommodate components such as ratchet and pawl, sealing the cavity and assisting in fixing the card seat 4. The inner surface of the card seat 4 is fitted with a cross adapter 6 for installing and fixing the cross adapter 6 so that it can rotate. The four ends of the cross adapter 6 integrate different specifications of socket drive heads such as small fly, medium fly, and large fly, realizing "one wrench for multiple specifications".

[0029] The fixed post 12 provides a fixed support point for the first spring 14 at one end, while the movable seat 13 serves as a movable connector between the first spring 14 and the single pawl 11, transmitting the spring thrust. The first spring 14 constitutes an elastic force source that drives the single pawl 11 to always maintain a meshing tendency with the single ratchet 9.

[0030] This device achieves a balance between high strength load-bearing capacity and low torque smoothness, significantly improving impact and wear resistance. It solves the fundamental problem of weak torque load-bearing capacity in the single pawl 11 structure, while retaining the simplicity of single-point engagement of the single pawl 11. It avoids the linkage jamming of the double pawl structure under low torque, ensuring smooth operation across the entire torque range from small-sized electronic bolts to large-sized mechanical bolts. It also enables rapid and stable adaptation of multi-sized sleeves, ensuring the reliability and accuracy of power transmission. It meets the high requirements of tool versatility and efficiency in field operations. It should be noted that the specific model of the first spring 14 used is to be selected by those skilled in the art, and the above-mentioned first spring 14 and other related technologies are all existing technologies, which will not be elaborated upon in this solution.

[0031] Please refer to the details. Figure 7 Limiting grooves 34 are provided on one side of the force-bearing platform 3 and the fixed cover plate 5. Limiting blocks 33 are integrally formed on both sides of the single pawl 11. The outer surfaces of the two limiting blocks 33 and the inner surfaces of the two limiting grooves 34 are slidably installed.

[0032] In this embodiment: the two limiting grooves 34 and the limiting block 33 cooperate to form a precise guiding and limiting mechanism for the movement path of the single pawl 11, and the outer surface of the limiting block 33 slides with the inner surface of the limiting groove 34, restricting the single pawl 11 to slide only on a predetermined trajectory.

[0033] Please refer to the details. Figure 7 Multiple fixing screws 7 are threaded on one side of the force-bearing platform 3, and one side of each fixing screw 7 moves through the outer surface of the force-bearing platform 3 and the fixing cover plate 5.

[0034] In this embodiment: multiple fixing screws 7 are installed on one side of the force-bearing platform 3 and move through the force-bearing platform 3 and the fixing cover plate 5 to firmly lock the fixing cover plate 5 on the force-bearing platform 3, ensuring the stability of the internal mechanism.

[0035] Please refer to the details. Figure 3 An extension rod 16 is slidably mounted on the inner surface of the slide cylinder 1, and a connecting rod 15 is threaded onto the inner surface of the extension rod 16. A fixing seat 8 is fixedly mounted on the lower side of the connecting rod 15.

[0036] In this embodiment: a connecting rod 15 is installed inside the extension rod 16 and fixedly connected to the support block 20 on the upper side to form a telescopic hidden extension rod 16, which is used to increase the lever arm to increase the torque. The extension rod 16 and the fixed seat 8 are connected by the connecting rod 15 and the locking operation is transmitted. At the same time, the fixed seat 8 serves as the base for connecting the telescopic mechanism of the extension rod 16 and the rotating seat 17.

[0037] Please refer to the details. Figure 3 and Figure 4 A rotating disk 30 is provided on the inner surface of the connecting rod 15, and a rotating seat 17 is rotatably installed on the lower side of the fixed seat 8. The rotating seat 17 movably passes through the upper side of the fixed seat 8 and is fixedly installed on the lower side of the rotating disk 30.

[0038] In this embodiment: the rotating disk 30 connects the rotating seat 17 and the rotating rod 32, converting the rotational motion into linear motion. Since the rotating seat 17 acts as a rotating joint between the wrench head and the handle, it allows for 180° angle adjustment, thereby enabling the control, locking, or extension of the internal extension rod 16.

[0039] Please refer to the details. Figure 6 and Figure 8 It also includes multiple locking mechanisms. Each locking mechanism includes a sliding groove 23 on the outer surface of the fixed base 8. A connecting groove 35 is provided on the upper side of the fixed base 8. A locking groove 24 is provided on the inner surface of the slide cylinder 1. Locking blocks 25 are slidably installed on the inner surfaces of the sliding groove 23 and the locking groove 24. Two parallel grooves 26 are provided on the inner surface of the sliding groove 23. Two limiting rods 27 are fixedly installed on the inner surfaces of the two parallel grooves 26 respectively. Two parallel blocks 29 are slidably installed on the outer surfaces of the two limiting rods 27 respectively. The adjacent ends of the two parallel blocks 29 and the two sides of the locking blocks 25 are fixedly installed respectively. A fourth spring 28 is sleeved on the outer surface of the two limiting rods 27.

[0040] In this embodiment: the sliding groove 23 accommodates and guides the locking block 25 to slide radially, and the inner surface of the connecting groove 35 slides and mounts the rotating rod 32, providing a vertical channel for the rotating rod 32. According to the locking groove 24, when the extension rod 16 retracts, it aligns with the sliding groove 23, allowing the locking block 25 to engage and lock the extension rod 16. The locking block 25 is fixed to the parallel block 29 on both sides and to the rotating rod 32 on the top, thus serving as the core actuator of the locking mechanism to achieve locking and unlocking.

[0041] The two parallel slots 26 provide a precise installation position for the limiting rods 27, while the two limiting rods 27 serve as guide rods and spring support shafts. At the same time, the two parallel blocks 29 connect the locking block 25 and the spring system to ensure parallel movement. The fourth spring 28 provides an elastic force to the locking block 25 toward the locking position, thereby achieving automatic locking.

[0042] Please refer to the details. Figure 6 and Figure 8 A rotating groove 31 is provided on the upper side of the rotating disk 30. A rotating rod 32 is slidably installed on the inner surface of both the rotating groove 31 and the connecting groove 35. The lower side of the rotating rod 32 moves through the inner surface of the rotating groove 31 and the connecting groove 35 and is fixedly installed on the upper side of the locking block 25.

[0043] In this embodiment: the rotational motion of the rotating disk 30 is converted into the axial linear motion of the rotating rod 32 by the opening of the rotating groove 31. At the same time, the rotating rod 32 is installed to connect the operating mechanism and the execution mechanism, which drives the locking block 25 to slide. The opening of the connecting groove 35 facilitates the movement of the rotating rod 32, thereby driving the locking mechanism on the lower side to lock the position according to the sliding rotating rod 32.

[0044] Please refer to the details. Figure 3A support shell 18 is fixedly installed on the upper inner wall of the slide cylinder 1. A support rod 19 is slidably installed on the inner surface of the support shell 18. A support block 20 is fixedly installed on the lower side of the support rod 19. The lower side of the support block 20 and the upper side of the extension rod 16 are fixedly installed. A second spring 21 is sleeved on the outer surface of the support shell 18. A third spring 22 is provided on the inner surface of the support shell 18.

[0045] In this embodiment: the fixed support shell 18 provides guidance and elastic reset support for the extension and retraction of the extension rod 16. At the same time, the support rod 19 moves with the extension rod 16, transmitting the motion to the spring mechanism. The support block 20 connects the support rod 19 and the extension rod 16, making them linked. The second spring 21 is sleeved on the outer surface of the support shell 18, providing a portion of the elastic reset or buffer force for the extension and retraction of the extension rod 16. The third spring 22 works in conjunction with the second spring 21 to provide the main reset or positioning elastic force for the extension rod 16 system.

[0046] A method for operating a globally adaptable adjustable ratchet wrench includes the following steps: S1. Core unidirectional transmission operation: The user moves the slide cylinder in the working direction, and the force is transmitted to the force-bearing platform through the connecting seat. At this time, the single pawl set on the inner surface of the force-bearing platform, under the action of the first spring in the elastic mechanism, has its teeth meshing with the single ratchet, driving the single ratchet to rotate. The torque is transmitted sequentially through the mounting seat fixed to the inner surface of the single ratchet, the cladding mounted on the inner surface of the force-bearing platform and the fixed cover plate, and finally to the cross adapter set on the inner surface of the cladding to drive the sleeve. During this process, the tail of the single pawl forms a surface contact with the specially designed protruding platform on the inner wall of the force-bearing platform, realizing a composite force of "tooth surface line contact + platform surface contact". When the user swings the slide back in the opposite direction, the back of the single ratchet pushes the inclined surface of the single pawl, causing the single pawl to compress the first spring and lift up along the guide inward of the limit blocks on both sides and the corresponding limit groove (34) on the force platform and the fixed cover plate, and slide over the top of the single ratchet tooth to complete the idle reset. S2. Quick fit for multiple sleeve sizes: According to the specifications of the bolt to be operated or the interface size of the existing sleeve, manually rotate the cross adapter to adjust the corresponding specification drive head integrated on it to the working position, and align and insert the drive head into the square drive hole of the sleeve to complete the adaptation without the need for an external adapter. S3. Adjustment of working angle: When the working space is limited, hold the wrench head and rotate it relative to the slide, so that the rotating seat mounted on the lower side of the fixed seat rotates around its axis within the range of 0-180°, thereby adjusting the wrench head to the appropriate working angle. S4. Extension, locking, and use of the extension rod: S4a. Unlocking and Extension: When it is necessary to increase the output torque, the operating component linked to the rotating disk is rotated; the rotational motion of the rotating disk is converted into the axial lifting motion of the rotating rod through the rotating groove opened on its upper part; the lifted rotating rod drives the locking block to overcome the elastic force of the fourth spring through the connecting groove, and retracts radially inward along the sliding groove on the fixed seat (8), so that it is completely disengaged from the current locking groove on the inner wall of the slide cylinder; then, the extension rod is manually pulled out from the slide cylinder to the required length; S4b. Locking after extension: When the extension rod is pulled out and the sliding groove on the fixed seat is aligned with the locking groove corresponding to the extension length on the inner wall of the slide cylinder (1), the rotational force on the operating component is released; the fourth spring drives the locking block to pop out along the guide radial direction of the limit rod through the parallel block, and lock into the corresponding locking groove to lock the extension rod in the extended state; S4c. Torque operation: With the extension rod extended and locked, perform step S1 to remove or install bolts, using the extended lever arm to obtain greater torque; S5. Extension rod retraction and locking: Rotate the operating component again and repeat the unlocking process of step S4a to retract the locking block from the locking groove; push the extension rod back into the slide cylinder until it is fully retracted; when the fixed seat returns to the initial position and its sliding groove aligns with the original locking groove on the inner wall of the slide cylinder, the fourth spring automatically drives the locking block to pop out and engage, locking the extension rod in the hidden state.

[0047] The working principle and usage process of this invention are as follows: First, the user moves the slide cylinder 1 in the working direction. The force is transmitted to the force-bearing platform 3 through the connecting seat 2. At this time, the single pawl 11 engages with the single ratchet 9 under the action of the first spring 14, driving it to rotate. Then, through the mounting seat 10 and the card seat 4, it drives the cross adapter 6 and the sleeve to rotate. The tail of the single pawl 11 simultaneously forms a surface contact with the protruding platform inside the force-bearing platform 3, dispersing the concentrated force at the engagement point into a composite load of tooth surface line contact and platform surface contact, significantly improving the strength. When the handle swings back, the back of the teeth of the single ratchet 9 pushes the inclined surface of the single pawl 11, causing it to compress the first spring 14 and lift up along the guide of the limiting block 33 and the limiting groove 34, sliding over the top of the ratchet teeth to achieve idle return. When performing multi-specification quick adaptation, according to the sleeve specification, the cross adapter 6 is manually rotated to match the required drive head small fly, medium fly, or large fly. Simply insert the cross-shaped adapter 6 into the square hole of the sleeve. The cross-shaped adapter 6 can be rotatably installed through the bracket 4, which facilitates quick alignment and replacement without the need for an external adapter. When adapting to narrow spaces, you can directly rotate the wrench head manually to adjust it to a suitable angle within the range of 0-180° around the axis of the rotating base 17. It is held by the structural friction. Then, the torque can be adjusted. Operate the linkage mechanism of the rotating disk 30 to drive the rotating rod 32 to lift the locking block 25, so that it exits from the locking groove 24 of the slide cylinder 1. Then, you can manually pull out the extension rod 16 to increase the lever arm and increase the output torque. After it is extended into place, release the operation. The fourth spring 28 pushes the locking block 25 to pop out and lock into the corresponding locking groove 24 on the slide cylinder 1, fixing the extension rod 16. When you unlock it again, push the extension rod 16 back into the slide cylinder 1 until it is completely hidden. The locking block 25 automatically locks back into its original position.

Claims

1. A globally adaptable adjustable ratchet wrench, characterized in that, The device includes a slide cylinder (1), a connecting seat (2) fixedly installed on the outer surface of the slide cylinder (1), a force-bearing platform (3) rotatably installed on the outer surface of the connecting seat (2), a single ratchet (9) rotatably installed on the inner surface of the force-bearing platform (3), a mounting seat (10) fixedly installed on the inner surface of the single ratchet (9), a single pawl (11) slidably installed on the inner surface of the force-bearing platform (3), a fixed cover plate (5) fixedly installed on the outer surface of the force-bearing platform (3), a retainer (4) rotatably installed on the inner surfaces of the force-bearing platform (3) and the fixed cover plate (5), a cross adapter (6) fitted on the inner surface of the retainer (4), and an elastic mechanism provided on the inner surface of the force-bearing platform (3). The elastic mechanism supports and limits the sliding single pawl (11) to achieve the function of fixing the bolts for disassembly or installation.

2. The globally adaptable adjustable ratchet wrench according to claim 1, characterized in that: The elastic mechanism includes a fixed column (12) fixedly installed on the inner wall of the force-bearing platform (3), a movable seat (13) rotatably installed on the inner surface of the single pawl (11), and a first spring (14) fixedly installed on the outer surfaces of both the fixed column (12) and the movable seat (13).

3. The globally adaptable adjustable ratchet wrench according to claim 2, characterized in that: The force-bearing platform (3) and the fixed cover plate (5) are provided with a limiting groove (34) on one side, and the single pawl (11) is integrally formed with limiting blocks (33) on both sides. The outer surfaces of the two limiting blocks (33) and the inner surfaces of the two limiting grooves (34) are slidably installed respectively.

4. A globally adaptable adjustable ratchet wrench according to claim 3, characterized in that: The force-bearing platform (3) has multiple fixing screws (7) threaded on one side, and one side of each fixing screw (7) moves through the outer surface of the force-bearing platform (3) and the fixing cover plate (5).

5. A fully adaptable adjustable ratchet wrench according to claim 4, characterized in that: An extension rod (16) is slidably mounted on the inner surface of the slide cylinder (1), and a connecting rod (15) is threadedly mounted on the inner surface of the extension rod (16). A fixing seat (8) is fixedly mounted on the lower side of the connecting rod (15).

6. A globally adaptable adjustable ratchet wrench according to claim 5, characterized in that: The inner surface of the connecting rod (15) is provided with a rotating disk (30), and a rotating seat (17) is rotatably installed on the lower side of the fixed seat (8). The rotating seat (17) movably passes through the upper side of the fixed seat (8) and is fixedly installed on the lower side of the rotating disk (30).

7. A globally adaptable adjustable ratchet wrench according to claim 6, characterized in that: It also includes multiple sets of locking mechanisms. Each set of locking mechanisms includes a sliding groove (23) opened on the outer surface of the fixed seat (8). A connecting groove (35) is opened on the upper side of the fixed seat (8). A locking groove (24) is opened on the inner surface of the slide cylinder (1). A locking block (25) is slidably installed on the inner surface of the sliding groove (23) and the locking groove (24). Two parallel grooves (26) are opened on the inner surface of the sliding groove (23). Two limit rods (27) are fixedly installed on the inner surface of the two parallel grooves (26). Two parallel blocks (29) are slidably installed on the outer surface of the two limit rods (27). The adjacent ends of the two parallel blocks (29) and the two sides of the locking block (25) are fixedly installed respectively. A fourth spring (28) is sleeved on the outer surface of the two limit rods (27).

8. A fully adaptable adjustable ratchet wrench according to claim 7, characterized in that: The upper side of the rotating disk (30) is provided with a rotating groove (31). The inner surfaces of the rotating groove (31) and the connecting groove (35) are slidably mounted with rotating rods (32). The lower side of the rotating rods (32) movably passes through the inner surfaces of the rotating groove (31) and the connecting groove (35) and is fixedly installed on the upper side of the locking block (25).

9. A fully adaptable adjustable ratchet wrench according to claim 8, characterized in that: A support shell (18) is fixedly installed on the upper inner wall of the slide cylinder (1). A support rod (19) is slidably installed on the inner surface of the support shell (18). A support block (20) is fixedly installed on the lower side of the support rod (19). The lower side of the support block (20) and the upper side of the extension rod (16) are fixedly installed. A second spring (21) is sleeved on the outer surface of the support shell (18). A third spring (22) is provided on the inner surface of the support shell (18).

10. A method for operating a fully adaptable adjustable ratchet wrench, applied to the fully adaptable adjustable ratchet wrench described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Core unidirectional transmission operation: The user moves the slide cylinder (1) in the working direction, and the force is transmitted to the force-bearing platform (3) through the connecting seat (2). At this time, the single pawl (11) set on the inner surface of the force-bearing platform (3) is engaged with the single ratchet (9) by the first spring (14) in the elastic mechanism, and drives the single ratchet (9) to rotate. The torque is transmitted in sequence through the mounting seat (10) fixed on the inner surface of the single ratchet (9), the casing seat (4) rotatably installed on the inner surface of the force-bearing platform (3) and the fixed cover plate (5), and finally to the cross adapter (6) mating on the inner surface of the casing seat (4) to drive the sleeve. During this process, the tail of the single pawl (11) forms a surface contact with the specially provided protruding platform on the inner wall of the force-bearing platform (3), realizing the composite force of "tooth surface line contact + platform surface contact". When the user swings the slide cylinder (1) in the opposite direction, the back of the teeth of the single ratchet (9) pushes the inclined surface of the teeth of the single pawl (11), causing the single pawl (11) to compress the first spring (14) and lift up along the guide inward of the limit blocks (33) on both sides and the corresponding limit grooves (34) on the force platform (3) and the fixed cover plate (5), and slide over the top of the teeth of the single ratchet (9) to complete the idle return. S2. Quick fit for multiple sleeve sizes: According to the specifications of the bolt to be operated or the interface size of the existing sleeve, manually rotate the cross adapter (6) to adjust the corresponding specification drive head integrated on it to the working position, and align and insert the drive head into the square drive hole of the sleeve to complete the adaptation without the need for an external adapter. S3. Adjustment of working angle: When the working space is limited, hold the wrench head and rotate it relative to the slide (1) so that the rotating seat (17) mounted on the lower side of the fixed seat (8) rotates around its axis in the range of 0-180°, thereby adjusting the wrench head to the appropriate working angle. S4. Extension, locking and use of the extension rod (16): S4a. Unlocking and Extension: When it is necessary to increase the output torque, the operating component linked to the rotating disk (30) is rotated; the rotational motion of the rotating disk (30) is converted into the axial lifting motion of the rotating rod (32) through the rotating groove (31) opened on its upper part; the lifted rotating rod (32) drives the locking block (25) to overcome the elastic force of the fourth spring (28) through the connecting groove (35) and retracts radially inward along the sliding groove (23) on the fixed seat (8), so that it is completely disengaged from the current locking groove (24) on the inner wall of the slide cylinder (1); then, the extension rod (16) is manually pulled out from the slide cylinder (1) to the required length; S4b. Locking after extension: When the extension rod (16) is pulled out and the sliding groove (23) on the fixed seat (8) is aligned with the locking groove (24) corresponding to the extension length on the inner wall of the slide cylinder (1), the rotational force on the operating component is released; the fourth spring (28) drives the locking block (25) to pop out along the guide radial direction of the limit rod (27) through the parallel block (29), and lock into the corresponding locking groove (24), locking the extension rod (16) in the extended state; S4c. Torque operation: With the extension rod (16) extended and locked, perform step S1 to perform bolt removal and installation operations, and obtain greater torque by utilizing the extended lever arm; S5. Retraction and locking of extension rod (16): Rotate the operating component again and repeat the unlocking process of step S4a to retract the locking block (25) from the locking groove (24); push the extension rod (16) back into the slide (1) until it is fully retracted; when the fixed seat (8) returns to the initial position and its sliding groove (23) aligns with the original locking groove (24) on the inner wall of the slide (1), the fourth spring (28) automatically drives the locking block (25) to pop out and engage, locking the extension rod (16) in the hidden state.

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