Silent ratchet high-torsion multi-angle bent rod sleeve screwdriver

Abstract

The utility model discloses a silent ratchet wheel high-torque multi-angle bent rod sleeve screwdriver, relates to the technical field of screwdrivers, and aims to solve the problems that an existing ratchet wheel screwdriver with a sleeve structure is limited in fusion of small size, high torque and multi-angle adjustment, and the overall practicability needs to be improved. One end of the long screwdriver connecting rod is fixedly connected with a stress application wrench head, one end of the stress application wrench head is provided with a ratchet wheel assembly, the ratchet wheel assembly comprises a three-angle stepless clamping sleeve, the three-angle stepless clamping sleeve is rotationally connected with the stress application wrench head through a pin shaft, three arc-shaped grooves are formed in the side surface of the three-angle stepless clamping sleeve, and the three arc-shaped grooves are connected with the ratchet wheel assembly. A mounting hole is formed in the end face of the long screwdriver connecting rod, a positioning block is movably mounted in the mounting hole, and a spring is connected to the outer portion of one end of the positioning block in a sleeving mode. And the effects that the characteristics of small size, high torque output, multi-angle adjustment and the like can be perfectly integrated, and the practicability is high are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of screwdrivers, in particular to a silent ratchet high-torque multi-angle bent-rod sleeve screwdriver. Background Art

[0002] There are many types of screwdrivers according to different functions, including ratchet screwdrivers. In order to better meet the use in specific places, users add a sleeve component to the outside of the ratchet screwdriver to improve the convenience of using the screwdriver.

[0003] Existing ratchet screwdrivers with a sleeve structure have limitations in integrating small size, high torque, and multi-angle adjustment, and their overall practicality needs to be improved. Utility Model Content

[0004] The utility model aims to provide a silent ratchet high-torque multi-angle bent-rod sleeve screwdriver which can perfectly integrate the characteristics of small size, high torque output, multi-angle adjustment, etc., and has strong practicality.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A silent ratchet high-torque multi-angle bent-rod socket screwdriver, comprising a long screwdriver connecting rod, one end of the long screwdriver connecting rod is fixedly connected with a force wrench head, one end of the force wrench head is provided with a ratchet assembly, the ratchet assembly includes a three-angle stepless ferrule, the three-angle stepless ferrule and the force wrench head are rotatably connected via a pin, three arc-shaped grooves are provided on the side surface of the three-angle stepless ferrule, a mounting hole is provided on the end surface of the long screwdriver connecting rod, and a positioning block is movably installed inside the mounting hole, one end of the positioning block is externally sleeved with a spring, one end of the spring rests on the inner end surface of the mounting hole, one end of the positioning block passes through the through hole on the end surface of the force wrench head, and rests in the arc groove of the three-angle stepless ferrule, and one end of the long screwdriver connecting rod is externally sleeved with a tool rod sleeve.

[0007] By adopting the above technical solution, the ratchet assembly can be flexibly rotated, thereby improving the use flexibility of the screwdriver.

[0008] Furthermore, the ratchet assembly also includes a center shaft, which is located at the internal center axis position of the three-angle stepless ferrule, and the side surface of the center shaft and the inner wall of the three-angle stepless ferrule are provided with mutually matching annular grooves with hemispherical cross-sections, and the interior of the annular grooves is filled with a plurality of first stainless steel beads, and a threaded hole is provided on the side surface of the three-angle stepless ferrule, and the threaded hole is communicated with the annular groove, and the internal thread of the threaded hole is connected with a positioning screw.

[0009] By adopting the above technical solution, the central shaft can be rotatably connected with the three-angle stepless ferrule.

[0010] Furthermore, a dial is rotatably sleeved on the outside of the central shaft, a plurality of third stainless steel beads are arranged between the dial and the central shaft, and the dial is located at the port of the three-angle stepless ferrule.

[0011] By adopting the above technical solution, the stability of the dial rotating outside the central axis is ensured.

[0012] Furthermore, a mounting hole is provided on the outer surface of the dial, and a compression spring is provided inside the mounting hole, a second stainless steel bead is provided at one end of the compression spring, and a plurality of spherical locking holes are provided on the end surface of the three-angle stepless ferrule, and some of the second stainless steel beads are buckled in the spherical locking holes.

[0013] By adopting the above technical solution, the dial can be limited and locked.

[0014] Furthermore, a plurality of linkage bars are arranged on the dial, and the linkage bars extend to the interior of the three-angle stepless ferrule, and two roller needles and a roller needle gap spring sheet are arranged between two adjacent linkage bars, and the two roller needles are distributed at both ends of the roller needle gap spring sheet, and arc grooves are respectively arranged on the symmetrical side surfaces of the linkage bars.

[0015] By adopting the above technical solution, the linkage bar can be used to lock the needle roller to achieve stable linkage operation and high torque output.

[0016] Furthermore, a socket is provided on the end surface of the central axis, and a permanent magnet steel is fixedly mounted on the inner end surface of the socket.

[0017] By adopting the above technical solution, the external plug-in can be firmly adsorbed and fixed in the socket on the end face of the central shaft by using permanent magnetic steel.

[0018] In summary, the beneficial technical effects of the utility model are:

[0019] 1. The utility model can perform rotation adjustment operations on the three-angle stepless ferrule at multiple angles through the mutual cooperation of the spring, the positioning block, and the multiple arc grooves on the three-angle stepless ferrule, and the overall flexibility is effectively improved. At the same time, the ratchet assembly can be used to make the screwdriver have a ratchet function, which can effectively improve the convenience of use of the entire screwdriver;

[0020] 2. The utility model inserts the edge of the arc groove on the side surface of the dial linkage strip between the needle roller and the central shaft, similar to a wedge structure, so that the central shaft is rotated and locked in one direction, thereby ensuring the ratchet transmission and effectively increasing the torque output of the entire screwdriver. Combined with the small size of the screwdriver, the screwdriver can be flexibly used in a narrow operating space, with a wider range of applications and greater practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the internal structure diagram of the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the needle roller and the needle roller intermittent spring piece of the utility model;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the ratchet assembly of the utility model.

[0024] In the figure: 1. tool rod sleeve; 2. long screwdriver connecting rod; 3. force wrench; 4. spring; 5. positioning block; 6. pin shaft; 7. three-angle stepless ferrule; 8. first stainless steel bead; 9. positioning screw; 10. center shaft; 11. second stainless steel bead; 12. compression spring; 13. permanent magnet steel; 14. dial; 15. third stainless steel bead; 16. needle roller; 17. needle roller gap spring; 18. ratchet assembly. DETAILED DESCRIPTION

[0025] The method of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] See attached Figure 1 , Attachment Figure 3 A silent ratchet high-torque multi-angle bent-rod sleeve screwdriver comprises a long screwdriver connecting rod 2, one end of the long screwdriver connecting rod 2 is fixedly connected with a force wrench 3, one end of the force wrench 3 is provided with a ratchet assembly 18, the ratchet assembly 18 comprises a three-angle stepless ferrule 7, the three-angle stepless ferrule 7 is rotatably connected to the force wrench 3 through a pin 6, three arc-shaped grooves are provided on the side surface of the three-angle stepless ferrule 7, a mounting hole is provided on the end surface of the long screwdriver connecting rod 2, and a positioning block 5 is movably installed inside the mounting hole, one end of the positioning block 5 is externally sleeved with a spring 4, the spring 4 One end of the long screw connecting rod 2 is against the inner end face of the mounting hole, one end of the positioning block 5 passes through the through hole on the end face of the force wrench head 3, and is against the arc-shaped groove of the three-angle stepless ferrule 7. One end of the long screw connecting rod 2 is externally sleeved with a tool rod sleeve 1, wherein the three-angle stepless ferrule 7 can be rotated and adjusted at multiple angles by the mutual cooperation of the spring 4, the positioning block 5, and multiple arc-shaped grooves on the three-angle stepless ferrule 7, and the overall flexibility is effectively improved. At the same time, the ratchet assembly 18 can be used to make the screwdriver have a ratchet function, which can effectively improve the convenience of use of the entire screwdriver.

[0027] Reference Figure 1The ratchet assembly 18 also includes a center shaft 10, which is located at the internal center axis position of the three-angle stepless ferrule 7. The side surface of the center shaft 10 and the inner wall of the three-angle stepless ferrule 7 are provided with annular grooves with hemispherical cross-sections that match each other, and the interior of the annular grooves is filled with multiple first stainless steel beads 8. A threaded hole is provided on the side surface of the three-angle stepless ferrule 7, and the threaded hole is communicated with the annular groove, and the internal thread of the threaded hole is connected with a positioning screw 9. A socket is provided on the end face of the center shaft 10, and a permanent magnet 13 is fixedly installed on the internal end face of the socket, wherein the permanent magnet 13 can be used to firmly adsorb the external plug-in in the socket on the end face of the center shaft 10, and the first stainless steel bead 8 can be used to ensure that the center shaft 10 can stably rotate inside the three-angle stepless ferrule 7.

[0028] Reference Figure 1 A dial 14 is rotatably sleeved on the outside of the center shaft 10, and a plurality of third stainless steel beads 15 are arranged between the dial 14 and the center shaft 10. The dial 14 is located at the port of the three-angle stepless ferrule 7. A mounting hole is arranged on the outer surface of the dial 14, and a compression spring 12 is arranged inside the mounting hole. A second stainless steel bead 11 is arranged at one end of the compression spring 12. A plurality of spherical locking holes are arranged on the end surface of the three-angle stepless ferrule 7, and some of the second stainless steel beads 11 are buckled in the spherical locking holes, wherein the third stainless steel bead 15 can be used to improve the stability of the rotation of the dial 14, and at the same time, the compression spring 12 and the second stainless steel bead 11 can be used to cooperate with each other to limit and lock the dial 14 to prevent the dial 14 from rotating during the use of the screwdriver.

[0029] Reference Figure 1 , Figure 2 A plurality of linkage bars are arranged on the dial 14, and the linkage bars extend to the interior of the three-angle stepless ferrule 7. Two needle rollers 16 and a needle roller gap spring piece 17 are arranged between two adjacent linkage bars. The two needle rollers 16 are distributed at both ends of the needle roller gap spring piece 17. Arc grooves are respectively arranged on the symmetrical side surfaces of the linkage bars. By inserting the edge of the arc groove on the side surface of the linkage bar of the dial 14 between the needle roller 16 and the central shaft 10, similar to a wedge structure, the central shaft 10 is rotated and locked in one direction, ensuring the ratchet transmission while effectively increasing the torque output of the entire screwdriver. Combined with the small size of the screwdriver, the screwdriver can be flexibly used in a narrow operating space, with a wider range of applications and stronger practicality.

[0030] Working principle: When in use, adjust the angle between the ratchet assembly 18 and the long screw connecting rod 2 according to actual needs. When adjusting, just turn the ratchet assembly 18. After turning to the specified angle, the positioning block 5 is pushed by the spring 4 and automatically pushes into the arc groove on the side surface of the three-angle stepless ferrule 7. Without the action of external force, the position of the ratchet assembly 18 is limited. Then adjust the locking direction of the ratchet assembly 18. At this time, turn the dial 14 so that the edge of the arc groove on the side surface of the linkage strip of the dial 14 is inserted into the specified roller needle 16 and the center shaft 10. In between, it is similar to a wedge structure, so that the central shaft 10 rotates in a one-way locking manner to ensure the ratchet transmission. After the rotation is completed, the second stainless steel bead 11 is pushed by the compression spring 12, and part of the second stainless steel bead 11 is placed in the locking hole on the end face of the three-angle stepless ferrule 7 to achieve the limited locking of the dial 14. Then the external plug-in can be inserted into the socket on the end face of the central shaft 10, and the permanent magnet steel 13 can be used to firmly adsorb and fix the plug-in in the socket on the end face of the central shaft 10, or the socket on the end face of the central shaft 10 can be directly sleeved on the outside of the nut for twisting.

[0031] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A silent ratchet high torque multi-angle curved rod sleeve screwdriver, comprising a long screwdriver connecting rod (2), characterized in that: One end of the long screwdriver connecting rod (2) is fixedly connected to a force wrench (3), and one end of the force wrench (3) is provided with a ratchet assembly (18). The ratchet assembly (18) includes a three-angle five-stage ferrule (7). The three-angle five-stage ferrule (7) and the force wrench (3) are rotatably connected via a pin shaft (6). Three arc-shaped grooves are provided on the side surface of the three-angle five-stage ferrule (7). A mounting hole is provided on the end surface of the long screwdriver connecting rod (2), and a positioning block (5) is movably installed inside the mounting hole. A spring (4) is externally sleeved on one end of the positioning block (5), and one end of the spring (4) abuts against the inner end surface of the mounting hole. One end of the positioning block (5) passes through the through hole on the end surface of the force wrench (3) and abuts against the arc-shaped groove of the three-angle five-stage ferrule (7). A tool rod sleeve (1) is externally sleeved on one end of the long screwdriver connecting rod (2).

2. The silent ratchet high torque multi-angle bent-rod sleeve screwdriver according to claim 1, characterized in that: The ratchet assembly (18) also includes a center shaft (10), which is located at the internal center axis position of the three-angle five-stage ferrule (7). The side surface of the center shaft (10) and the inner wall of the three-angle five-stage ferrule (7) are both provided with mutually matching annular grooves with hemispherical cross-sections, and the interior of the annular grooves is filled with a plurality of first stainless steel beads (8). A threaded hole is provided on the side surface of the three-angle five-stage ferrule (7), and the threaded hole is communicated with the annular groove, and the internal thread of the threaded hole is connected with a positioning screw (9).

3. The silent ratchet high torque multi-angle bent-rod sleeve screwdriver according to claim 2, characterized in that: The outer portion of the central shaft (10) is rotatably sleeved with a dial (14), a plurality of third stainless steel beads (15) are arranged between the dial (14) and the central shaft (10), and the dial (14) is located at the port of the three-angle five-level ferrule (7).

4. The silent ratchet high torque multi-angle bent-rod sleeve screwdriver according to claim 3, characterized in that: A mounting hole is provided on the outer surface of the dial (14), and a compression spring (12) is provided inside the mounting hole. A second stainless steel bead (11) is provided at one end of the compression spring (12). A plurality of spherical locking holes are provided on the end surface of the three-angle five-level ferrule (7), and some of the second stainless steel beads (11) are buckled in the spherical locking holes.

5. The silent ratchet high torque multi-angle bent-rod sleeve screwdriver according to claim 3, characterized in that: The dial (14) is provided with a plurality of linkage bars, and the linkage bars extend to the interior of the three-angle five-level ferrule (7), two roller needles (16) and a roller needle gap spring sheet (17) are provided between two adjacent linkage bars, the two roller needles (16) are distributed at both ends of the roller needle gap spring sheet (17), and arc grooves are respectively provided on the symmetrical side surfaces of the linkage bars.

6. The silent ratchet high torque multi-angle bent-rod sleeve screwdriver according to claim 2, characterized in that: The end surface of the central shaft (10) is provided with a socket, and a permanent magnetic steel (13) is fixedly mounted on the inner end surface of the socket.

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