Control method for a lockable, double-reversible ratchet wrench and its assembly fixture

Abstract

This invention relates to a lockable, dual-directional ratchet wrench and its assembly control method, belonging to the field of ratchet wrench manufacturing technology. It includes a wrench base containing a ratchet, handles at both ends, and a reversing assembly that is inserted and fixed to the wrench base on one side of the ratchet. The ratchet's inner bore contains several locking components arranged in a ring. The reversing assembly includes a reversing lever with a reversing toothed block between it and the ratchet. The locking component includes an internal hexagonal stud threaded into the ratchet, with a steel ball nested at its front end and connected to the ratchet's inner bore. A spring II, inserted and fixed to the internal hexagonal stud, is located between the stud and the steel ball. It features a compact structure, convenient operation, and time and labor savings. It solves the problem of switching between dual-directional and locking operation. The use of a tooling structure assists in achieving an efficient assembly process.

Description

Technical Field

[0001] This invention relates to the field of ratchet wrench manufacturing technology, specifically to a control method for a lockable, double-reversible ratchet wrench and its assembly fixture. Background Technology

[0002] A ratchet wrench is a manual screw tightening and loosening tool. Single-headed and double-headed ratchet wrenches in various sizes and with adjustable handles are connected by a hinge key consisting of a main wrench and a secondary wrench of different sizes.

[0003] The double-ended ratchet wrench is a commonly used tool, popular for its convenience, speed, reliability, increased work efficiency, and reduced labor intensity. While their operating principles are largely the same, their structures and forms vary widely. However, assembling a double-ended ratchet wrench manually is inefficient and labor-intensive. Summary of the Invention

[0004] This invention primarily addresses the shortcomings of existing technologies by providing a lockable, dual-directional ratchet wrench and its assembly tooling control method. It boasts advantages such as compact structure, convenient operation, and time and labor savings. It solves the problem of switching between dual-directional and locking operation. The tooling structure assists in achieving a highly efficient assembly process.

[0005] The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions:

[0006] A lockable, dual-reversible ratchet wrench includes a wrench base containing a ratchet. Handles are located at both ends of the wrench base. A reversing assembly, which is inserted into and fixed to the wrench base, is located on one side of the ratchet. Several locking components are arranged in a ring within the ratchet's inner bore. The reversing assembly includes a reversing lever with reversing teeth between the lever and the ratchet. The locking components include an internal hexagonal stud threaded into the ratchet. A steel ball, which is nested within the ratchet's inner bore, is located at the front end of the internal hexagonal stud. A spring II, inserted into and fixed to the internal hexagonal stud, is located between the internal hexagonal stud and the steel ball.

[0007] Preferably, the other side of the ratchet is provided with a locking component that is inserted and fixed to the wrench seat. The locking component includes a locking lever, and a locking tooth block is provided between the locking lever and the ratchet.

[0008] Preferably, a limiting pressure rod is provided between the locking lever and the locking tooth block, and between the reversing lever and the reversing tooth block. A spring I is provided between the limiting pressure rod and the locking lever, and between the limiting pressure rod and the reversing lever, and is sleeved with the limiting pressure rod.

[0009] Preferably, the upper end of the wrench seat is provided with lever swing grooves on both sides, which are connected to the ratchet and respectively limited to the locking lever and the reversing lever.

[0010] Preferably, each handle is provided with an anti-slip sleeve that is snapped into and fixed to the handle.

[0011] An assembly fixture for a ratchet wrench includes a fixture base, on which a clamping cylinder is mounted. A clamping cylinder bracket is provided between the clamping cylinder and the fixture base. An assembly component is mounted on the fixture base, through which the ratchet wrench passes and is movably pressed against the clamping cylinder. Both sides of the assembly component have wrench support posts that are U-shaped and engaged with the ratchet wrench. The assembly component includes a telescopic cylinder, with a ratchet tray at its upper end. A secondary telescopic rod is provided between the ratchet tray and the telescopic cylinder. The secondary telescopic rod has toothed block guide grooves on both sides that are movably inserted into the telescopic cylinder. A primary telescopic rod is provided between the secondary telescopic rod and the ratchet tray. The primary telescopic rod has limiting pressure rod guide grooves on both sides that are movably inserted into the toothed block guide grooves.

[0012] The control methods for assembly tooling include the following operational steps:

[0013] Step 1: Place the integrated wrench base and handle on the wrench support column, insert the wrench base into the assembly components, pre-assemble the locking lever and reversing lever and place them parallel to the handle, and assemble the locking component into the ratchet.

[0014] Step 2: Place the ratchet on the ratchet tray, and use the telescopic cylinder to push the ratchet tray so that the upper part of the ratchet contacts the clamping cylinder.

[0015] Step 3: The telescopic cylinder retracts, and at the same time the pressing cylinder presses down synchronously, so that the limit pressure rod guide grooves on both sides of the first-stage telescopic rod reach the assembly height, and the limit pressure rod equipped with spring I slides in through the limit pressure rod guide groove.

[0016] Step 4: The first-level telescopic rod retracts into place, the limit pressure rod guide groove is inserted into the tooth block guide groove, the second-level telescopic rod rises and displaces, causing the tooth block guide groove and the limit pressure rod guide groove to move into place synchronously, and the locking tooth block and the reversing tooth block slide in through the tooth block guide groove.

[0017] Step 5: The telescopic cylinder drives the first-stage and second-stage telescopic rods to retract, while the clamping cylinder presses down to press the ratchet into place, completing the assembly process of the ratchet wrench.

[0018] Preferably, the lower end of the telescopic cylinder is provided with a cylinder fixing leg for the retraction of the secondary telescopic rod between the lower end of the telescopic cylinder and the tooling base. After the tooth block guide groove completes the guiding assembly of the locking tooth block and the reversing tooth block, the secondary telescopic rod retracts. The height space reserved by the cylinder fixing leg satisfies the assembly of the clamping cylinder and the ratchet tray for ratchet displacement.

[0019] The present invention can achieve the following effects:

[0020] This invention provides a lockable, dual-directional ratchet wrench and a control method for its assembly fixture. Compared with existing technologies, it has the advantages of compact structure, convenient operation, and time and labor saving. It solves the problem of switching between dual-directional and locking operation. The use of fixture structure assists in achieving a highly efficient assembly process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the ratchet wrench of the present invention.

[0022] Figure 2 This is a partial structural cross-sectional view of the ratchet wrench of the present invention.

[0023] Figure 3 This is a schematic diagram of the locking structure of the present invention.

[0024] Figure 4 This is a structural schematic diagram of the ratchet wrench and assembly fixture of the present invention.

[0025] Figure 5 This is a structural schematic diagram of the assembly tooling of the present invention.

[0026] In the diagram: 1. Handle; 2. Anti-slip sleeve; 3. Locking assembly; 4. Wrench seat; 5. Ratchet; 6. Reversing assembly; 7. Locking assembly; 8. Locking lever; 9. Spring I; 10. Locking tooth block; 11. Reversing lever; 12. Lever groove; 13. Reversing tooth block; 14. Limiting rod; 15. Hex socket stud; 16. Spring II; 17. Steel ball; 18. Clenching cylinder bracket; 19. Clenching cylinder; 20. Assembly assembly; 21. Wrench support column; 22. Tooling base; 23. Ratchet tray; 24. First-stage telescopic rod; 25. Limiting rod guide groove; 26. Second-stage telescopic rod; 27. Tooth block guide groove; 28. Telescopic cylinder; 29. ​​Cylinder fixing leg. Detailed Implementation

[0027] The technical solution of the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0028] Example: Figure 1 , Figure 2 and Figure 3As shown, a lockable, dual-directional ratchet wrench includes a wrench base 4, a ratchet 5 inside the wrench base 4, and handles 1 at both ends of the wrench base 4. Each handle 1 is provided with an anti-slip sleeve 2 that is engaged and fixed with the handle 1. A reversing assembly 6 is provided on one side of the ratchet 5 and is inserted and fixed to the wrench base 4. The inner hole of the ratchet 5 has six locking assemblies 7 arranged in a ring. The reversing assembly 6 includes a reversing lever 11, and a reversing tooth block 13 is provided between the reversing lever 11 and the ratchet 5. A locking assembly 3 is provided on the other side of the ratchet 5 and is inserted and fixed to the wrench base 4. The locking assembly 3 includes a locking lever 8, and a locking tooth block 10 is provided between the locking lever 8 and the ratchet 5. Limiting rods 14 are provided between the locking lever 8 and the locking tooth block 10, and between the reversing lever 11 and the reversing tooth block 13. Springs I 9, which are sleeved with the limiting rods 14, are provided between the limiting rods 14 and the locking lever 8, and between the limiting rods 14 and the reversing lever 11. Both sides of the upper end of the wrench base 4 are provided with lever swing grooves 12 that communicate with the ratchet 5 and are respectively limited and inserted into the locking lever 8 and the reversing lever 11. The locking assembly 7 includes an internal hexagonal stud 15 that is threaded into the ratchet 5. A steel ball 17, which is nested in the inner hole of the ratchet 5, is located at the front end of the internal hexagonal stud 15. A spring II 16, which is inserted into and fixed to the internal hexagonal stud 15, is provided between the internal hexagonal stud 15 and the steel ball 17.

[0029] like Figure 4 and 5 As shown, an assembly fixture for a ratchet wrench includes a fixture base 22, a clamping cylinder 19 mounted on the fixture base 22, a clamping cylinder bracket 18 between the clamping cylinder 19 and the fixture base 22, and an assembly component 20 on the fixture base 22 that passes through the ratchet wrench and is movably pressed against the clamping cylinder 19. Both sides of the assembly component 20 are provided with wrench support columns 21 that are U-shapedly engaged with the ratchet wrench. The assembly component 20 includes a telescopic cylinder 28, a ratchet tray 23 at the upper end of the telescopic cylinder 28, a secondary telescopic rod 26 between the ratchet tray 23 and the telescopic cylinder 28, tooth block guide grooves 27 on both sides of the secondary telescopic rod 26 that are movably inserted into the telescopic cylinder 28, a primary telescopic rod 24 between the secondary telescopic rod 26 and the ratchet tray 23, and limiting pressure rod guide grooves 25 on both sides of the primary telescopic rod 24 that are movably inserted into the tooth block guide grooves 27. A cylinder fixing leg 29 for retracting the secondary telescopic rod 26 is provided between the lower end of the telescopic cylinder 28 and the tooling base 22.

[0030] like Figures 1-5 As shown, the control method includes the following operation steps:

[0031] Step 1: Place the integrated structure of the wrench base 4 and handle 1 on the wrench support column 21. Connect the wrench base 4 to the assembly component 20. Pre-assemble the locking lever 8 and the reversing lever 11 and place them parallel to the handle 1. Assemble the locking component 7 into the ratchet 5.

[0032] Step 2: Place ratchet 5 on ratchet tray 23, and use telescopic cylinder 28 to push ratchet tray 23 so that the upper part of ratchet 5 contacts clamping cylinder 19.

[0033] Step 3: The telescopic cylinder 28 retracts, and at the same time the pressing cylinder 19 presses down synchronously, so that the limit pressure rod guide grooves 25 on both sides of the first-stage telescopic rod 24 reach the assembly height, and the limit pressure rod 14 equipped with spring I9 slides into the limit pressure rod guide groove 25.

[0034] Step 4: The first-level telescopic rod 24 retracts into place, the limit pressure rod guide groove 25 is inserted into the tooth block guide groove 27, the second-level telescopic rod 26 is raised and displaced so that the tooth block guide groove 27 and the limit pressure rod guide groove 25 are simultaneously displaced into place, and the locking tooth block 10 and the reversing tooth block 13 are slid into the tooth block guide groove 27.

[0035] Step 5: The telescopic cylinder 28 drives the first-stage telescopic rod 24 and the second-stage telescopic rod 26 to retract, while the clamping cylinder 19 presses down, pressing the ratchet 5 into place, completing the assembly process of the ratchet wrench. After the tooth block guide groove 27 completes the guiding assembly of the locking tooth block 10 and the reversing tooth block 13, the second-stage telescopic rod 26 retracts. Through the height space reserved by the cylinder fixing leg 29, the clamping cylinder 19 and the ratchet tray 23 are able to perform the displacement assembly of the ratchet 5.

[0036] In summary, the control method for this lockable, dual-directional ratchet wrench and its assembly fixture offers advantages such as compact structure, convenient operation, and time and labor savings. It solves the problem of switching between dual-directional and locking operation. The use of fixture structure assists in achieving a highly efficient assembly process.

[0037] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A method for assembling a lockable, double-reversible ratchet wrench, characterized in that: The ratchet wrench includes a wrench seat (4), a ratchet (5) is provided inside the wrench seat (4), and handles (1) are provided at both ends of the wrench seat (4). A reversing assembly (6) is provided on one side of the ratchet (5) and is fixedly inserted into the wrench seat (4). Several locking assemblies (7) are provided in a ring-shaped arrangement in the inner hole of the ratchet (5). The reversing assembly (6) includes a reversing lever (11), and a reversing tooth block (13) is provided between the reversing lever (11) and the ratchet (5). The locking assembly (7) includes an internal hexagonal stud (15) that is threadedly connected to the ratchet (5). A steel ball (17) is provided at the front end of the internal hexagonal stud (15) and is connected to the inner hole of the ratchet (5). A spring II (16) is provided between the internal hexagonal stud (15) and the steel ball (17) and is fixedly inserted into the internal hexagonal stud (15). The ratchet (5) is provided with a locking assembly (3) that is inserted and fixed to the wrench seat (4) on the other side. The locking assembly (3) includes a locking lever (8). A locking tooth block (10) is provided between the locking lever (8) and the ratchet (5). A limiting pressure rod (14) is provided between the locking lever (8) and the locking tooth block (10) and between the reversing lever (11) and the reversing tooth block (13). A spring I (9) is provided between the limiting pressure rod (14) and the locking lever (8) and between the limiting pressure rod (14) and the reversing lever (11). The assembly fixture for the ratchet wrench includes a fixture base (22), on which a clamping cylinder (19) is provided. A clamping cylinder bracket (18) is provided between the clamping cylinder (19) and the fixture base (22). An assembly component (20) is provided on the fixture base (22) that passes through the ratchet wrench and is movably pressed against the clamping cylinder (19). Both sides of the assembly component (20) are provided with wrench support columns (21) that are U-shapedly embedded and supported by the ratchet wrench. The assembly component (20) includes a telescopic cylinder (28). The telescopic cylinder (28) is provided with a ratchet tray (23) at its upper end. A secondary telescopic rod (26) is provided between the ratchet tray (23) and the telescopic cylinder (28). The secondary telescopic rod (26) has tooth block guide grooves (27) on both sides that are movably inserted into the telescopic cylinder (28). A primary telescopic rod (24) is provided between the secondary telescopic rod (26) and the ratchet tray (23). The primary telescopic rod (24) has limit pressure rod guide grooves (25) on both sides that are movably inserted into the tooth block guide grooves (27). The control methods for assembly tooling include the following operational steps: Step 1: Place the integrated structure of the wrench base (4) and handle (1) on the wrench support column (21), insert the wrench base (4) into the assembly component (20), pre-assemble the locking lever (8) and the reversing lever (11) and place them parallel to the handle (1), and assemble the locking component (7) into the ratchet (5). Step 2: Place the ratchet (5) on the ratchet tray (23), and use the telescopic cylinder (28) to push the ratchet tray (23) so that the upper part of the ratchet (5) contacts the clamping cylinder (19); Step 3: The telescopic cylinder (28) retracts, and the pressing cylinder (19) presses down synchronously, so that the limit pressure rod guide groove (25) on both sides of the first-stage telescopic rod (24) reaches the assembly height, and the limit pressure rod (14) equipped with spring I (9) slides in through the limit pressure rod guide groove (25); Step 4: The first-level telescopic rod (24) retracts into place, the limit pressure rod guide groove (25) is inserted into the tooth block guide groove (27), the second-level telescopic rod (26) is raised and displaced so that the tooth block guide groove (27) and the limit pressure rod guide groove (25) are simultaneously displaced into place, and the locking tooth block (10) and the reversing tooth block (13) slide into the tooth block guide groove (27); Step 5: The telescopic cylinder (28) drives the first-stage telescopic rod (24) and the second-stage telescopic rod (26) to retract, while the pressing cylinder (19) presses down to press the ratchet (5) into place, thus completing the assembly process of the ratchet wrench.

2. The assembly method of the lockable double-reversible ratchet wrench according to claim 1, characterized in that: The upper sides of the wrench seat (4) are provided with lever swing grooves (12) that are connected to the ratchet (5) and respectively limited to the locking lever (8) and the reversing lever (11).

3. The assembly method of the lockable double-reversible ratchet wrench according to claim 1, characterized in that: Each handle (1) is provided with an anti-slip sleeve (2) that is snapped into and fixed to the handle (1).

4. The assembly method of the lockable double-reversible ratchet wrench according to claim 1, characterized in that: The lower end of the telescopic cylinder (28) and the tooling base (22) are provided with a cylinder fixing leg (29) for the retraction of the secondary telescopic rod (26). After the tooth block guide groove (27) completes the guiding assembly of the locking tooth block (10) and the reversing tooth block (13), the secondary telescopic rod (26) retracts. Through the height space reserved by the cylinder fixing leg (29), the pressure cylinder (19) and the ratchet tray (23) are satisfied with the displacement assembly of the ratchet (5).

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