Ratchet screwdriver structure

Abstract

It provides a ratchet screwdriver structure. [Solution] The ratchet screwdriver structure comprises a grip 10, a ratchet ring 20, an annular column 30, a knob 40, a locking set 50, and a tool shaft 60. The ratchet ring includes a ring portion 21 and a neck portion 22 connected to the ring portion. Multiple ratchets 211 are installed on the inner wall surface of the ring portion, and the neck portion is inserted through the grip. The annular column is housed within the ring portion, and the outer circumferential surface of the annular column is provided with an opening 31, a housing groove 32, and a switching groove 33. The locking set comprises an elastic member 51, a steel ball 52, and multiple locking units 53. The elastic member is installed in the opening, and the steel ball is pushed by the elastic member so that it can be positioned in one of the multiple recesses of the knob. Each locking unit is installed in each housing groove and is stopped or pressed by the ratchet.

Description

Technical Field

[0001] The present invention relates to hand tools, and more particularly to a ratchet driver structure.

Background Art

[0002] A general ratchet driver usually includes a handle, a ratchet mechanism, and a tool rod. Many of the ratchet mechanisms are installed inside the handle and control the forward rotation, reverse rotation, or free rotation state of the tool rod by a switching member. To stably position the switching member at each operation position, a positioning unit is usually installed in the ratchet driver structure. Many of the positioning units adopt a combination of an elastic metal sheet (for example, a steel ball) and a concave portion or a positioning hole in the switching member or the ratchet base to provide a stepped positioning effect.

Summary of the Invention

Problems to be Solved by the Invention

[0003] However, the above-mentioned ratchet driver has a structure that positions by an elastic metal sheet. In actual use and long-term operation, the elastic metal sheet contacts the corresponding member in an elastic deformation manner, and the force received is concentrated in a partial contact area. Repeated bending easily causes metal fatigue, resulting in unstable positioning, attenuation of the positioning force, and generation of abnormal noises and positioning failures. On the other hand, many of the locking units of the ratchet mechanism of the conventional ratchet driver are inserted into the slots by an E-shaped locking sheet. However, this E-shaped locking sheet is easily displaced during the process of installing the spring, and the assembly is inconvenient.

[0004] Therefore, the present inventor considered that the above-mentioned drawbacks can be improved, and as a result of repeated intensive studies, the present invention was proposed to effectively improve the above-mentioned problems through a reasonable design.

[0005] This invention was made in view of the above circumstances, and one of its objectives is to solve the problems described above. Specifically, the purpose of this invention is to provide a ratchet screwdriver structure that further stabilizes the positioning structure, further simplifies the installation of the locking unit, and improves overall reliability and convenience in use. [Means for solving the problem]

[0006] To achieve the above objective, a ratchet screwdriver structure in one aspect of the present invention comprises a grip, a ratchet ring, an annular column, a knob, a locking set, and a tool shaft. The ratchet ring includes a ring portion and a neck portion connected to the ring portion. Multiple ratchets are installed on the inner wall surface of the ring portion, and the neck portion is inserted through the grip. The annular column is housed within the ring portion, and its outer surface is provided with an opening, a housing groove, and a switching groove, with a first retaining wall formed on one side of the switching groove and a second retaining wall formed on the other side. The knob includes a rotating cover and a switching lever installed inside the rotating cover, the rotating cover being fitted over the ratchet ring, and the inner wall surface of the rotating cover having a locking block and multiple recesses. The switching lever protrudes into the switching groove and, as the rotating cover rotates, contacts either the first or second retaining wall. The locking set includes an elastic member, a steel ball, and multiple locking units. An elastic member is installed in the opening, and the steel ball is pushed by the elastic member so that it can be positioned in one of the multiple recesses. Each locking unit is installed in each housing groove and is stopped or pressed by one of the multiple ratchets. The tool shaft is driven through the rotating cover, the annular column, and the ratchet ring and is fixed in the grip.

[0007] In a more preferred embodiment, each locking unit comprises a locking sheet and a spring elastically in contact with the locking sheet. One end of the locking sheet protrudes from the housing groove and retracts into the housing groove upon pressure from the locking block.

[0008] In a more preferred embodiment, the locking sheet is a U-shaped sheet further comprising a first transverse rib and a second transverse rib installed in parallel, and an upright rib connected to the first transverse rib and the second transverse rib. The locking sheet has an opening surrounded by the first transverse rib, the second transverse rib, and the upright rib, and a spring is installed in the opening.

[0009] In a more desirable embodiment, a stepped portion is provided on one side of the upright rib of the locking sheet facing the ratchet, so that a protrusion is formed where the first transverse rib is connected to the upright rib.

[0010] In a more preferred embodiment, the stepped portion comprises two sets of stopper surfaces and pressing surfaces that are positioned to form a vertical line.

[0011] In a more desirable embodiment, a protrusion is formed where the first transverse rib of the locking sheet is connected to the upright rib.

[0012] In a more preferred embodiment, each receiving groove is a rectangular groove, and a concave arc surface is formed on the inner wall surface of the rectangular groove, and the outer edge of the spring is in contact with the concave arc surface.

[0013] In a more desirable embodiment, the accommodating grooves are provided on both sides of the switching groove.

[0014] In a more preferred embodiment, the accommodating groove extends from one side of the annular column and penetrates to the opposing other side, and the locking sheet on one side of the annular column within one accommodating groove and the locking sheet on the other side share a single spring.

[0015] In a more preferred embodiment, the ratchet screwdriver structure further comprises a retaining ring, and the tool shaft includes an actuating part, a fixed part connected to the actuating part, and a retaining ring. The actuating part protrudes from the working end of the grip and is provided with a guide hole in the actuating part, and the fixed part is provided with a slot. The fixed part engages with the retaining ring and the slot and is positioned on the bottom side of the neck. [Effects of the Invention]

[0016] As this invention is configured as described above, it produces the following effects. The locking set of the ratchet screwdriver structure according to this invention comprises an elastic member, a steel ball, and a plurality of locking units. The steel ball replaces the conventional elastic sheet to prevent situations where repeated bending of the elastic metal sheet causes metal fatigue, leading to unstable positioning, reduced positioning force, abnormal noise, and positioning failure. Furthermore, the locking sheet according to this invention is a U-shaped sheet with an opening, and the elastic sheet is installed within the opening to prevent displacement during the spring installation process, thus simplifying the assembly method. This results in a more stable positioning effect, further simplifies the installation of the locking units, and improves overall reliability and convenience in use.

[0017] The following information will become clear from the description in the specification and drawings described later. [Brief explanation of the drawing]

[0018] [Figure 1] This is an external perspective view showing both sides of a ratchet screwdriver structure according to one embodiment of the present invention. [Figure 2] This is an external perspective view showing both sides of a ratchet screwdriver structure according to one embodiment of the present invention. [Figure 3] This is an exploded view showing a ratchet screwdriver structure according to one embodiment of the present invention. [Figure 4] This is a cross-sectional view showing the knob of a ratchet screwdriver according to one embodiment of the present invention. [Figure 5] This is a cross-sectional view showing the ratchet screwdriver structure according to one embodiment of the present invention. [Figure 6] This is a cross-sectional view showing the state of use of a ratchet screwdriver structure according to one embodiment of the present invention. [Figure 7]It is a cross-sectional view showing the usage state of a ratchet driver structure according to an embodiment of the present invention. [Figure 8] It is a cross-sectional view showing another usage state of a ratchet driver structure according to an embodiment of the present invention. [Figure 9] It is a cross-sectional view showing another usage state of a ratchet driver structure according to an embodiment of the present invention. [Figure 10] It is a cross-sectional view showing still another usage state of a ratchet driver structure according to an embodiment of the present invention. [Figure 11] It is a cross-sectional view showing still another usage state of a ratchet driver structure according to an embodiment of the present invention. [Figure 12] It is an exploded view showing a ratchet driver structure according to another embodiment of the present invention. [Figure 13] It is a cross-sectional view showing a ratchet driver structure according to another embodiment of the present invention.

Modes for Carrying Out the Invention

[0019] Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the claims for utility model registration. Also, not all combinations of features described in the embodiments are essential for the solution means of the invention.

[0020] Figures 1 and 2 are external perspective views showing both sides of a ratchet screwdriver structure according to one embodiment of the present invention. The ratchet screwdriver structure 1 according to the present invention comprises a grip 10, a ratchet ring 20, an annular column 30, a knob 40, a locking set 50, and a tool shaft 60. The ratchet ring 20 is coupled to the grip 10. The locking set 50 is mounted in the annular column 30 and is also installed in the ratchet ring 20 together with the annular column 30. The knob 40 is fitted over the outside of the ratchet ring 20. One end of the tool shaft 60 is passed through the annular column 30 and the ratchet ring 20 and fixed in the grip 10. The other end of the tool shaft 60 protrudes from the knob 40 and is used to rotate a bolt or nut. The ratchet screwdriver structure 1 will be described in detail below.

[0021] Figure 3 is an exploded view showing a ratchet screwdriver structure according to one embodiment of the present invention. Figure 4 is a cross-sectional view showing the knob of a ratchet screwdriver according to one embodiment of the present invention. Figure 5 is a cross-sectional view showing the configuration of a ratchet screwdriver structure according to one embodiment of the present invention. The grip 10 according to the present invention is provided with a working end 11. The ratchet ring 20 includes a ring portion 21 and a neck portion 22 connected to the ring portion 21. Multiple ratchets 211 are installed on the inner wall surface of the ring portion 21. The neck portion 22 is inserted through the working end 11 of the grip 10. In this embodiment, multiple grooves 111 are provided on the working end 11. Multiple bumps 221 are also provided on the outer circumferential surface of the neck portion 22. The neck portion 22 is engaged with the multiple grooves 111 by the multiple bumps 221 so as to be positioned on the working end 11.

[0022] Furthermore, the annular column 30 is housed within the ring portion 21. A through hole 300 is provided in the center of the annular column 30, and an opening 31, a plurality of accommodating grooves 32, and a switching groove 33 are provided on the outer circumferential surface 301 of the annular column 30. In the annular column 30, a first retaining wall 34 is formed on one side of the switching groove 33, and a second retaining wall 35 is formed on the other side. In this embodiment, the plurality of accommodating grooves 32 are installed on both sides of the switching groove 33, and are installed so as to face the sides of the first retaining wall 34 and the second retaining wall 35. The opening 31 and the switching groove 33 are located on the opposite side of the annular column 30, and the switching groove 33 is provided on the top surface 302 of the annular column 30.

[0023] The knob 40 includes a rotating cover 41 and a selector lever 42 installed inside the rotating cover 41. The rotating cover 41 is provided with a plurality of recesses 410, and the rotating cover 41 is fitted over the ratchet ring 20. The selector lever 42 protrudes into the selector groove 33 and, as the rotating cover 41 rotates, comes into contact with the first retaining wall 34 or the second retaining wall 35. In this embodiment, the plurality of recesses 410 include a first recess 411, an intermediate recess 412, and a second recess 413. A locking block 43 is also formed on the inner wall surface of the rotating cover 41. The selector lever 42 protrudes from an intermediate position of the locking block 43 toward the center of the rotating cover 41.

[0024] Furthermore, the locking set 50 comprises an elastic member 51, a steel ball 52, and a plurality of locking units 53. The elastic member 51 is a spring installed in the opening 31. The steel ball 52 is pushed by the elastic member 51 so that it can be positioned in one of the plurality of recesses 410. Each locking unit 53 is installed in each housing groove 32 and is stopped or pressed by one of the plurality of ratchets 211.

[0025] In this embodiment, each locking unit 53 comprises a locking sheet 531 and a spring 536 elastically in contact with the locking sheet 531. One end of the locking sheet 531 protrudes from the housing groove 32 and retracts into the housing groove 32 when pressed by one of the ratchets 211. In this embodiment, the locking sheet 531 is a U-shaped sheet and includes a first transverse rib 532 and a second transverse rib 533 which are installed in parallel, and an upright rib 534 connected to the first transverse rib 532 and the second transverse rib 533. The locking sheet 531 also has an opening 530 surrounded by the first transverse rib 532, the second transverse rib 533, and the upright rib 534. The spring 536 is installed in the opening 530.

[0026] Specifically, each locking sheet 531 has a stepped portion 535 on one side of its upright rib 534 that faces the multiple ratchets 211, so that a protrusion 532' is formed where the first transverse rib 532 is connected to the upright rib 534. In this embodiment, the stepped portion 535 is equipped with two sets of stopper surfaces 5351 and pressing surfaces 5352 that are positioned to form a vertical surface. Each housing groove 32 is a rectangular groove, and a concave arc surface 320 is formed on the inner wall surface of the rectangular groove. Furthermore, the outer edge of the spring 536 contacts the concave arc surface 320, allowing the spring 536 to move more stably within each housing groove 32.

[0027] Furthermore, the tool shaft 60 is inserted through the rotating cover 41, the through hole 300 of the annular column 30, and the ratchet ring 20, and is fixed inside the grip 10. The ratchet screwdriver structure 1 according to the present invention further comprises a retaining ring 70. The tool shaft 60 also comprises an operating part 61 and a fixed part 62 connected to the operating part 61. The operating part 61 protrudes from the working end 11 of the grip 10, and the operating part 61 is provided with a guide hole 610. The fixed part 62 is provided with a slot 621. As a result, the fixed part 62 engages with the retaining ring 70 at the slot 621 and abuts against the retaining ring 70 so as to be positioned on the bottom side of the neck part 22.

[0028] Figures 6 and 7 are cross-sectional views showing the usage state of a ratchet screwdriver structure according to one embodiment of the present invention. In the example of Figure 6, when the knob 40 according to the present invention is not rotated, the steel ball 52 is positioned in the intermediate recess 412. Specifically, the stepped portion 535 (stopper surface 5351 and pressing surface 5352) of the locking sheet 531 is stopped or pressed by the ratchet 211 of the ratchet ring 20. It should be noted that the switching lever 42 is positioned at an intermediate position in the switching groove 33. Also, the locking block 43 of the knob 40 is positioned between the first retaining wall 34 and the second retaining wall 35, and the locking block 43 does not press against the protrusion 532' of either locking unit 53. In this case, the locking sheets 531 of the locking unit 53 (first locking unit) adjacent to the first retaining wall 34 and the other locking unit 53 (second locking unit) adjacent to the second retaining wall 35 protrude from their respective receiving grooves 32.

[0029] In the example shown in Figure 7, the grip 10 according to the present invention is rotatable in both directions. Specifically, whether the grip 10 rotates clockwise or counterclockwise, the ratchet 211 of the ratchet ring 20 is stopped by the stopper surface 5351 of the locking sheet 531. Therefore, when the grip 10 rotates clockwise or counterclockwise, the grip 10 is linked to the rotation of the annular column 30 clockwise or counterclockwise. In this way, the tool shaft 60 is rotatable when the grip 10 rotates clockwise or counterclockwise.

[0030] Figures 8 and 9 are cross-sectional views showing other usage states of a ratchet screwdriver structure according to one embodiment of the present invention. The ratchet screwdriver structure 1 according to the present invention allows the direction of rotation to be switched by rotating the knob 40. In the example of Figure 8, when the rotating cover 41 according to the present invention is rotated counterclockwise, the switching lever 42 moves along the switching groove 33 and comes into contact with the first retaining wall 34, and the steel ball 52 is positioned in the first recess 411. In this case, the locking unit 53 (first locking unit) adjacent to the first retaining wall 34 is pressed by the locking block 43 and retracts into the housing groove 32. In addition, the outer end of the locking sheet 531 of the other locking unit 53 (second locking unit) adjacent to the second retaining wall 35 protrudes from the housing groove 32.

[0031] In the example shown in Figure 9, the knob 40 according to the present invention is rotated counterclockwise, and then the ratchet ring 20 rotates in accordance with the rotation of the grip 10. The locking unit 53 (first locking unit) adjacent to the first retaining wall 34 in the locking set 50 retracts into the housing groove 32. The grip 10 is made capable of rotating in one direction by the action of the locking unit 53 (second locking unit) adjacent to the second retaining wall 35. Specifically, the stepped portion 535 of the locking sheet 531 according to the present invention has two stopper surfaces 5351 and two pressing surfaces 5352. When the grip 10 is rotated clockwise, the ratchet 211 of the ratchet ring 20 continuously presses the two pressing surfaces 5352 of the locking sheet 531. In this case, the grip 10 rotates freely relative to the annular column 30. On the one hand, when the grip 10 is rotated counterclockwise, the ratchet 211 of the ratchet ring 20 is stopped by the two stopper surfaces 5351 of the locking seat 531. In this way, when the grip 10 is rotated counterclockwise, the grip 10 is reliably linked to rotate the annular column 30 counterclockwise. In this manner, the tool shaft 60 rotates when the grip 10 is rotated counterclockwise.

[0032] It should be noted that, until the switching lever 42 contacts the first retaining wall 34, when the knob 40 according to this invention is rotated counterclockwise, the tool shaft 60 rotates precisely counterclockwise, following the knob 40, in addition to the rotation of the grip 10 when it is rotated counterclockwise.

[0033] Figures 10 and 11 are cross-sectional views showing further other uses of a ratchet screwdriver structure according to one embodiment of the present invention. In the example of Figure 10, when the rotating cover 41 according to the present invention is rotated clockwise, the switching lever 42 moves along the switching groove 33 and comes into contact with the second retaining wall 35, and the steel ball 52 is positioned in the second recess 413. At this time, the locking unit 53 (second locking unit) adjacent to the second retaining wall 35 is pressed by the locking block 43 and retracts into the housing groove 32. Also, with respect to the locking unit 53 (first locking unit) adjacent to the first retaining wall 34, the outer end of the locking sheet 531 protrudes from the housing groove 32.

[0034] In the example shown in Figure 11, the rotating lid 41 according to the present invention is rotated clockwise, and then the ratchet ring 20 rotates in accordance with the rotation of the grip 10. The locking unit 53 (second locking unit) adjacent to the second retaining wall 35 in the locking set 50 retracts into the housing groove 32. The grip 10 is made capable of rotating in one direction by the action of the locking unit 53 (first locking unit) adjacent to the first retaining wall 34. Specifically, when the grip 10 is rotated counterclockwise, the ratchet 211 of the ratchet ring 20 continuously presses against the pressing surface 5352 of the locking sheet 531. At this time, the grip 10 rotates freely relative to the annular column 30. On the other hand, when the grip 10 is rotated clockwise, the ratchet 211 of the ratchet ring 20 is stopped by the stopper surface 5351 of the locking sheet 531. Therefore, when the grip 10 is rotated clockwise, the grip 10 moves in conjunction with the annular column 30 to rotate clockwise. As a result, the tool shaft 60 rotates when the grip 10 is rotated clockwise.

[0035] It should be noted that when the knob 40 according to this invention is rotated clockwise until the switching lever 42 contacts the second retaining wall 35, the tool shaft 60 can also rotate precisely clockwise, following the knob 40, in addition to rotating when the grip 10 is rotated clockwise.

[0036] Figure 12 is an exploded view showing a ratchet screwdriver structure according to another embodiment of the present invention. Figure 13 is a cross-sectional view showing a ratchet screwdriver structure according to another embodiment of the present invention. This embodiment is substantially the same as the prior embodiment, namely, the ratchet screwdriver structure 1a comprises a grip 10a, a ratchet ring 20a, an annular column 30a, a knob 40a, a locking set 50a, and a tool shaft 60a. The ratchet ring 20a is coupled to the grip 10a. The locking set 50a is mounted in the annular column 30a and is also installed in the ratchet ring 20a together with the annular column 30a. The knob 40a is fitted over the outside of the ratchet ring 20a. One end of the tool shaft 60a is fixed in the grip 10a, and the other end protrudes from the knob 40a.

[0037] In the installation of the locking set 50a, this embodiment differs from the previous embodiment. In this embodiment, the annular column 30a is provided with an opening 31a, a plurality of housing grooves 32a, and a switching groove 33a. The locking set 50a comprises an elastic member 51a, a steel ball 52a, and a plurality of locking units 53a. The plurality of locking units 53a are each installed in the plurality of housing grooves 32a. Each locking unit 53a includes a locking sheet 531a and a spring 536a that elastically contacts the locking sheet 531a.

[0038] Furthermore, the locking sheet 531a according to this embodiment includes a first transverse rib 532a and a second transverse rib 533a that are installed in parallel, and an upright rib 534a connected to the first transverse rib 532a and the second transverse rib 533a. A protrusion 532a' is formed where the first transverse rib 532a is connected to the upright rib 534a. The locking sheet 531a has an opening 530a surrounded by the first transverse rib 532a, the second transverse rib 533a, and the upright rib 534a, and the spring 536a is installed in the opening 530a.

[0039] This embodiment differs in that multiple accommodating grooves 32a extend from one side of the annular column 30a and penetrate to the opposite side. In this way, the locking sheet 531a on one side of the annular column 30a and the locking sheet 531a on the other side of the annular column 30a share a single spring 536a, thereby strengthening the pressing and stopping force on the ratchet ring 20a and achieving operation in a predetermined direction.

[0040] Although embodiments of the present invention have been described in detail above with reference to the drawings, the specific configuration is not limited to these embodiments, and design modifications and the like are also included within the scope of the spirit of the present invention. [Explanation of Symbols]

[0041] 1. Ratchet screwdriver structure 1a Ratchet screwdriver structure 10 Grips 10a Grip 11 Work end 111 Groove 20 Ratchet Rings 20a Ratchet Ring 21 Ring section 211 Ratchet 22 Neck section 221 Bump 30 Ring Pillars 30a Ring column 300 through holes 301 Outer edge surface 302 Top surface 31 Aperture 31a aperture 32 storage grooves 32a Storage groove 320 Concave arc surface 33 Switching groove 33a Switching groove 34. First retaining wall 35. Second retaining wall 40 Knobs 40a Knob 41 Rotating Lid 410 recess 411 First recess 412 Intermediate recess 413 Second recess 42. Switching lever 43 Locking block 50 Locking Set 50a Locking Set 51 Elastic member 51a Elastic member 52 steel ball 52a steel ball 53 Locking Unit 53a Locking unit 530 Opening 530a opening 531 Locking Sheet 531a Locking sheet 532 First transverse rib 532a First transverse rib 532' protrusion 532a' protrusion 533 Second transverse rib 533a Second transverse rib 534 Upright Ribs 534a Upright ribs 535 Step section 5351 Stopper surface 5351a Stopper surface 5352 Pressing surface 5352a Pressing surface 536 Spring 536a Spring 60 Tool Shafts 60a Tool Shaft 61 Operating part 610 Guide hole 62 Fixed part 70 Retaining ring

Claims

1. The grip and, A ratchet ring including a ring portion and a neck portion connected to the ring portion, Multiple ratchets are installed on the inner wall surface of the ring portion. The neck portion is provided with the ratchet ring which is inserted through the grip, An annular column housed within the aforementioned ring portion, The outer surface of the annular column is provided with an opening, a plurality of storage grooves, and a switching groove. The annular column has a first retaining wall formed on one side of the switching groove and a second retaining wall formed on the other side, A knob including a rotating cover and a selector lever installed inside the rotating cover, The rotating cover is fitted over the ratchet ring, The inner wall surface of the rotating lid has a locking block and a plurality of recesses formed therein. The switching lever protrudes into the switching groove and, when the rotating cover is rotated, comes into contact with the first retaining wall or the second retaining wall, the knob and A locking set comprising an elastic member, a steel ball, and a plurality of locking units, The elastic member is installed in the opening, The steel ball is pushed by the elastic member so that it can be positioned in one of the multiple recesses. Each of the locking units is installed in each of the housing grooves and is stopped or pressed by one of the ratchets among the plurality of ratchets, and the locking set A ratchet screwdriver structure characterized by comprising a tool shaft that is inserted through the rotating cover, the annular column, and the ratchet ring, and is further fixed in the grip.

2. Each locking unit comprises a locking sheet and a spring elastically in contact with the locking sheet. The ratchet screwdriver structure according to claim 1, characterized in that one end of the locking sheet protrudes from the housing groove and retracts into the housing groove upon being pressed by the locking block.

3. The locking sheet is a U-shaped sheet and further comprises a first transverse rib and a second transverse rib installed in parallel, and an upright rib connected to the first transverse rib and the second transverse rib. The locking sheet has an opening surrounded by the first transverse rib, the second transverse rib, and the upright rib, The ratchet screwdriver structure according to claim 2, characterized in that the spring is installed in the opening.

4. The ratchet screwdriver structure according to claim 3, characterized in that a stepped portion is provided on one side of the upright rib of the locking sheet facing the plurality of ratchets, so that a protrusion is formed at the location where the first transverse rib is connected to the upright rib.

5. The ratchet screwdriver structure according to claim 4, characterized in that the stepped portion comprises two sets of stopper surfaces and pressing surfaces that are installed to form a vertical position.

6. The ratchet screwdriver structure according to claim 3, characterized in that a protrusion is formed at the location where the first transverse rib of the locking sheet is connected to the upright rib.

7. Each of the aforementioned receiving grooves is a rectangular groove, A concave arc surface is formed on the inner wall surface of the rectangular groove. The ratchet screwdriver structure according to claim 3, characterized in that the outer edge of the spring contacts the concave arc surface.

8. The ratchet screwdriver structure according to claim 1, characterized in that the plurality of receiving grooves are each installed on both sides of the switching groove.

9. The plurality of receiving grooves extend from one side of the annular column and penetrate to the opposite other side. The ratchet screwdriver structure according to claim 8, characterized in that the locking sheet on one side of the annular column and the locking sheet on the other side of the annular column within one of the housing grooves share a single spring.

10. It also has a retaining ring, The tool shaft includes an operating part and a fixed part connected to the operating part. The operating part protrudes from the working end of the grip, and the operating part is provided with a guide hole. The aforementioned fixing part is provided with a slot, The ratchet screwdriver structure according to claim 1, characterized in that the fixing portion is engaged with the retaining ring and the slot and is positioned on the bottom side of the neck portion.

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