A reversible screwdriver

Abstract

The utility model belongs to the technical field of maintenance tool, provide a reversible screwdriver, including shell, tool bit, stop subassembly and switch spare, stop subassembly sets up in the shell, one end of tool bit is located in the shell and is cooperated with stop subassembly, the other end of tool bit extends to the shell outside, stop subassembly can limit one direction or two directions of tool bit relative the shell rotation, the shell extends along tool bit length direction, switch spare is embedded in the surface of shell, the side of switch spare towards the shell inner chamber is butt joint with stop subassembly, can switch the limiting direction of stop subassembly to tool bit through the rotation switch spare. The utility model's screwdriver has the function of change direction, can carry out the rotary reset under the condition of tool bit and work piece not separating and not drive work piece rotation, thereby need not frequent adjustment operation posture, improve operation convenience and construction efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of maintenance tool technology, specifically relating to a reversible screwdriver. Background Technology

[0002] Screwdrivers are frequently used in repair work. By fitting the screwdriver tip to the workpiece and combining it with a tightening motion, they can tighten or loosen screws and bolts. However, when actually tightening workpieces, the tightening angle of a screwdriver is limited by the operating space. Therefore, it is necessary to readjust the screwdriver position after tightening the workpiece to continue tightening. Frequent adjustments to the position make the operation cumbersome and reduce efficiency, especially when operating in confined spaces, increasing the difficulty of repairs. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a reversible screwdriver. This screwdriver has a reversible function, and can rotate and reset without rotating the workpiece without separating the screwdriver head from the workpiece. This eliminates the need for frequent adjustment of the operating posture and improves the convenience of operation and construction efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A reversible screwdriver includes a housing, a cutting head, a stop assembly, and a switch.

[0006] The stop assembly is disposed within the housing, one end of the cutter head is located within the housing and cooperates with the stop assembly, and the other end of the cutter head extends outside the housing; the stop assembly can restrict the rotation of the cutter head relative to the housing in one or both directions;

[0007] The outer shell extends along the length of the cutter head; the switch is embedded on the surface of the outer shell, and the side of the switch facing the inner cavity of the outer shell is connected to the stop assembly. By rotating the switch, the limiting direction of the stop assembly on the cutter head can be switched.

[0008] In a preferred embodiment of this utility model, the switch component is provided with a boss, and the boss faces the side of the cutter head.

[0009] Preferably, the outer casing surface is provided with holes, a portion of which is hollowed out and communicates with the inner cavity of the outer casing, and a portion of which is provided with a support; the switch is rotatably connected to the support, and the switch is connected to the stop assembly through the hollowed-out position of the holes.

[0010] In a preferred embodiment of this utility model, the outer shell is provided with a protective sleeve, the protective sleeve is detachably fitted on the end of the outer shell near the blade head, the protective sleeve extends out of the end of the outer shell and protrudes from the blade head, and the protective sleeve is located on the periphery of the blade head.

[0011] Preferably, the outer casing is provided with a limiting platform at the end near the cutter head, the limiting platform dividing the outer casing into a handle portion and a connecting portion; the protective sleeve is fitted onto the connecting portion;

[0012] The connecting part is provided with an L-shaped anti-detachment groove, and one end of the anti-detachment groove is provided with an opening; the inner side of the protective sleeve is provided with a protrusion, and the protrusion can be inserted into the anti-detachment groove through the opening.

[0013] In a preferred embodiment of this utility model, the outer shell is provided with a protrusion at one end away from the cutter head, and is provided with a plurality of protrusions, the ends of which are spherical.

[0014] In a preferred embodiment of this utility model, the stop assembly includes a fixed post, a driving member, a first pawl, a second pawl, and a gear ring; the fixed post is fixed in the inner cavity of the housing and extends along its length; the first pawl and the second pawl are swayably mounted on the fixed post, and the first pawl and the second pawl can respectively limit the rotation of the gear ring, with the limiting directions of the first pawl and the second pawl being opposite; the driving member is rotatably mounted on the fixed post, and the driving member is used to actuate the first pawl and the second pawl; the driving member is connected to the switch member, and when the switch member rotates, it drives the driving member to rotate, thereby actuating the first pawl or the second pawl to switch the limiting direction of the gear ring; the gear ring is connected to the cutter head.

[0015] Preferably, the teeth of the gear ring are disposed on the inner side, the first pawl and the second pawl are inserted into the gear ring and partially extend out of the gear ring, and an elastic element is provided between the first pawl and the second pawl; under normal conditions, the elastic force of the elastic element causes the teeth of the first pawl and the second pawl to simultaneously engage with the gear ring; the driving member is provided with a driving part at the corresponding position of the first pawl and the second pawl, and when the driving member rotates, the driving part causes the first pawl or the second pawl to swing to cause the first pawl or the second pawl to separate from the gear ring; a positioning structure is provided between the driving member and the fixed post, and the positioning structure is used to position the driving member at the position where the first pawl engages with the gear ring, the second pawl engages with the gear ring, or the first pawl and the second pawl engage with the gear ring simultaneously.

[0016] Preferably, the driving component has a first gear tooth, and the switching component has a corresponding second gear tooth, wherein the first gear tooth and the second gear tooth mesh.

[0017] Preferably, the end of the cutter head near the stop assembly is the connecting end, and the end of the cutter head extending out of the housing is the adapter end; a connecting sleeve is provided at the connecting end, and polygonal connecting holes are provided at both ends of the connecting sleeve. The outer wall of the toothed ring and the connecting end are both polygonal, and the toothed ring and the connecting end are respectively matched and embedded in the connecting holes at both ends of the connecting sleeve.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model discloses a reversible screwdriver. By rotating a switch located on the surface of the outer casing, the limiting direction of the stop assembly on the screwdriver head can be switched. This allows the screwdriver head to rotate relative to the outer casing in one direction or be locked, increasing the flexibility of the screwdriver head and facilitating efficient and convenient tightening of workpieces. For example, if a workpiece needs to be tightened in the first direction, the switch can be rotated to switch the stop assembly to restrict only the first direction of the screwdriver head, and the stop assembly no longer restricts the second direction of the screwdriver head. In this state, the end of the screwdriver head extending from the outer casing is fitted with the workpiece (e.g., the end of the screwdriver head is embedded in the groove of the screw head). Then, the screwdriver head drives the workpiece to rotate in the first direction. When the user holds the outer casing and rotates it to its limit angle in the first direction, the user holds the outer casing and tightens it in the second direction. The screwdriver head and the outer casing rotate relative to each other, and the outer casing and the user's hand achieve a reverse reset, while the screwdriver head and the workpiece remain stationary. Subsequently, the user continues to drive the outer casing to rotate in the first direction, and the screwdriver head rotates again to continue tightening the workpiece in the first direction. This cycle continues until the workpiece is tightened to the desired position.

[0020] This invention places the switch component on the surface of the housing, making it clear, easy to identify, and convenient for user operation. Furthermore, because the switch component is located on the surface of the housing, various patterns or markings can be designed on its surface, giving the switch component a more distinctive appearance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of a reversible screwdriver according to the present invention.

[0023] Figure 2for Figure 1 A 3D view from another perspective, hidden behind the protective cover.

[0024] Figure 3 for Figure 1 Another perspective 3D view of the protective cover and switch components hidden in the middle.

[0025] Figure 4 This is a 3D view of the switch component.

[0026] Figure 5 This is a 3D view of the protective case.

[0027] Figure 6 for Figure 1 A 3D view showing the hidden housing, protective sleeve, and switch components.

[0028] Figure 7 This is an exploded view of the stop assembly and the cutter head.

[0029] Figure 8 This is a front view of the inner ring, fixed post, first chuck, second chuck, elastic element, and gear ring in the stop assembly.

[0030] Figure 9 This is the front view of the inner circle.

[0031] Figure 10 This is a three-dimensional view of the outer ring.

[0032] in:

[0033] 1-Outer shell, 101-Protruding post, 102-Anti-detachment groove, 103-Limiting platform, 104-Hole, 105-Support part, 106-Turn hole;

[0034] 2-Switch element, 201-Boss, 202-Pillar, 203-Second gear tooth;

[0035] 3-Protective cover, 301-Protrusion;

[0036] 4-Cutter head;

[0037] 5-Connecting sleeve;

[0038] 6-Place block;

[0039] 7-Stop assembly, 701-Outer ring, 7011-First gear tooth, 7012-Groove, 702-Fixing post, 7021-Spherical body, 703-Inner ring, 7031-Protrusion, 7032-Drive unit, 7033-Positioning groove, 704-First pawl, 705-Second pawl, 706-Elastic element, 707-Gear ring. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0042] See Figures 1-10 This embodiment discloses a reversible screwdriver, including a housing 1, a screwdriver head 4, a stop assembly 7, and a switch 2 for changing the limiting direction of the stop assembly 7.

[0043] In this embodiment, the stop assembly 7 is disposed inside the housing 1. One end of the cutter head 4 is located inside the housing 1 and cooperates with the stop assembly 7, while the other end of the cutter head 4 extends outside the housing 1. The stop assembly 7 can restrict the rotation of the cutter head 4 relative to the housing 1 in one or both directions. The housing 1 extends along the length of the cutter head 4. The switch 2 is embedded on the surface of the housing 1, and the side of the switch 2 facing the inner cavity of the housing 1 is connected to the stop assembly 7. By rotating the switch 2, the limiting direction of the stop assembly 7 on the cutter head 4 can be switched.

[0044] In this embodiment, the reversible screwdriver has a switch 2 for switching the limit direction located on the surface of the housing 1. This design is clear, simple, and convenient for users to operate.

[0045] To further improve ease of operation, the switch component 2 in this embodiment is provided with a boss 201, which faces the side of the cutter head 4. The boss 201 allows the user to easily rotate the switch component 2 to switch the stop assembly 7 to its limit position. Figure 1 and Figure 4 As shown, the switch 2 in this embodiment is divided into two parts, one of which protrudes to form the boss 201.

[0046] In this embodiment, the outer casing 1 has holes 104 on its surface. A portion of the holes 104 is hollowed out and communicates with the inner cavity of the outer casing 1. A support portion 105 is provided in the portion of the holes 104. The switch component 2 is rotatably connected to the support portion 105, and the switch component 2 connects to the stop assembly 7 through the hollowed-out position of the holes 104. In this embodiment, the support portion 105 has a rotating hole 106, and a corresponding column 202 is provided on the switch component 2. The column 202 is inserted into the rotating hole 106 and can rotate, thereby enabling the switch component 2 to rotate on the outer casing 1. To prevent the switch component 2 from falling out of the outer casing 1, a screw can be installed inside the outer casing 1, passing through the rotating hole 106 and connecting to the main body of the switch. This screw is used to fix the switch component 2 relatively, allowing the switch component 2 to rotate relative to the outer casing 1 while preventing it from loosening and falling out.

[0047] Furthermore, in this embodiment, the outer casing 1 is provided with a protective sleeve 3. The protective sleeve 3 is detachably fitted onto the end of the outer casing 1 near the blade head 4. The protective sleeve 3 extends beyond the end of the outer casing 1 and protrudes from the blade head 4, and is located around the blade head 4. The protective sleeve 3 surrounds the blade head 4, protecting it and preventing the blade head 4 from accidentally injuring the user. Especially when children use it, the protective sleeve 3 can effectively prevent the blade head 4 from stabbing the user.

[0048] To enhance the fun of the reversible screwdriver in this embodiment, the protective sleeve 3 can be shaped like an octopus, making the product more appealing to children and suitable for early childhood education activities. The protective sleeve 3 can be made of silicone or other materials with a certain degree of softness or elasticity. The outer shell 1 of this embodiment is cylindrical in shape, but larger at the end furthest from the blade 4 and smaller at the end closest to the blade 4, with rounded side surfaces. This design improves the user's grip and makes the outer shell 1 more aesthetically pleasing. Combined with color and pattern design, it is especially suitable for children. For example, an eye pattern can be added to the surface of the switch 2, which, combined with the octopus shape of the protective sleeve 3, makes the overall product appearance more vivid and appealing to children.

[0049] For safety, the protective sleeve 3 in this embodiment protrudes from the cutter head 4. Therefore, the protective sleeve 3 may affect the fit between the cutter head 4 and the workpiece. In this embodiment, the protective sleeve 3 adopts an octopus shape. UV coating or other coatings that improve the smoothness of the inner surface of the protective sleeve 3 can be sprayed onto it, allowing the protective sleeve 3 to deform more easily through sliding motion when pressed, thus facilitating the fit between the cutter head 4 and the workpiece. Of course, besides the octopus shape, the protective sleeve 3 in this embodiment can also adopt other shapes, such as a trumpet shape.

[0050] Furthermore, in this embodiment, the outer casing 1 is composed of two separate casings. The protective sleeve 3 is fitted onto the end of the outer casing 1, encircling the two casings and preventing them from loosening, thus further improving the reliability of the product.

[0051] See Figures 2-3 In this embodiment, the outer shell 1 near the end of the cutter head 4 is provided with a limiting platform 103, which divides the outer shell 1 into a handle part and a connecting part; the protective sleeve 3 is fitted onto the connecting part. The connecting part is provided with an L-shaped anti-detachment groove 102, and one end of the anti-detachment groove 102 is provided with an opening; the inner side of the protective sleeve 3 is provided with a protrusion 301, which can be inserted into the anti-detachment groove 102 through the opening. When the protective sleeve 3 is assembled with the connecting part, the protrusion 301 is inserted into the anti-detachment groove 102 through the opening, and the protective sleeve 3 is rotated at a certain angle so that the protrusion 301 is located in the transverse groove of the anti-detachment groove 102, thereby making it difficult for the protective sleeve 3 to separate from the outer shell 1.

[0052] In addition, the outer shell 1 has a protrusion at the end away from the screwdriver head 4, and is provided with multiple protrusions 101, the ends of which are spherical. In this embodiment, the protrusions 101 can contact the user's palm, improving the comfort of using the screwdriver. The protrusions 101 can be made of materials with good comfort, such as silicone or soft rubber.

[0053] The stop assembly 7 in this embodiment includes a fixed post 702, a driving member, a first pawl 704, a second pawl 705, and a gear ring 707. The fixed post 702 is fixed in the inner cavity of the outer shell 1 and extends along the length direction. The first pawl 704 and the second pawl 705 are swayably mounted on the fixed post 702. The first pawl 704 and the second pawl 705 can respectively limit the rotation of the gear ring 707, and the limiting directions of the first pawl 704 and the second pawl 705 are opposite. The driving member is rotatably mounted on the fixed post 702. The driving member is used to actuate the first pawl 704 and the second pawl 705. The driving member is connected to the switch member 2. When the switch member 2 rotates, it drives the driving member to rotate, thereby actuating the first pawl 704 or the second pawl 705 to switch the limiting direction of the gear ring 707. The gear ring 707 is connected to the cutter head 4.

[0054] Furthermore, the teeth of the gear ring 707 are located on the inner side, the first pawl 704 and the second pawl 705 are inserted into the gear ring 707 and partially extend to the outside of the gear ring 707, and an elastic element 706 is provided between the first pawl 704 and the second pawl 705, which may be a spring. Under normal conditions, the elastic force of the elastic element 706 causes the teeth of the first pawl 704 and the second pawl 705 to simultaneously engage with the gear ring 707. A driving part 7032 is provided at the corresponding position of the driving member and the first pawl 704 and the second pawl 705. When the driving member rotates, the driving part 7032 causes the first pawl 704 or the second pawl 705 to swing, thereby causing the first pawl 704 or the second pawl 705 to separate from the gear ring 707. A positioning structure is provided between the driving member and the fixed post 702. The positioning structure is used to position the driving member at the position where the first pawl 704 engages with the gear ring 707, the second pawl 705 engages with the gear ring 707, or the first pawl 704 and the second pawl 705 engage with the gear ring 707 simultaneously.

[0055] To enable the switch 2 to drive the drive component to rotate, this embodiment employs a toothed connection between the switch 2 and the drive component. The drive component has a first gear tooth 7011, and the switch 2 has a corresponding second gear tooth 203, which mesh with each other. Thus, when the switch 2 rotates, the first gear tooth 7011 and the second gear tooth 203 engage, thereby driving the drive component to rotate. In this embodiment, the second gear tooth 203 on the switch 2 is distributed in a certain arc shape, which helps ensure sufficient meshing between the second gear tooth 203 and the first gear tooth 7011 when the switch 2 is rotated.

[0056] Furthermore, the driving component in this embodiment includes two parts: an outer ring 701 and an inner ring 703. The inner ring 703 is fitted onto the fixed post 702 and can rotate relative to the fixed post 702. The outer ring 701 is fitted onto the inner ring 703. The inner wall of the outer ring 701 is provided with a groove 7012, and the outer wall of the inner ring 703 is provided with a protrusion 7031. The protrusion 7031 is embedded in the groove 7012, thereby realizing the synchronous rotation of the outer ring 701 and the inner ring 703. In addition, the first gear tooth 7011 is disposed on the outer wall of the outer ring 701, and the positioning structure of this embodiment includes a ball 7021 protruding on the fixed post 702 and three positioning grooves 7033 disposed on the inner wall of the inner ring 703. A spring or other elastic element may be disposed between the ball 7021 and the fixed post 702 to facilitate the cooperation between the ball 7021 and the three positioning grooves 7033. Alternatively, no spring may be disposed between the ball 7021 and the three positioning grooves 7033, and the ball can be switched between the three positioning grooves 7033 by means of interference fit. More specifically, when the ball 7021 is located in the middle positioning groove 7033, the first pawl 704 and the second pawl 705 simultaneously engage the gear ring 707. At this time, the cutter head 4 cannot rotate relative to the outer casing 1, meaning that both rotational directions of the cutter head 4 are locked. When the ball 7021 is located in the left or right positioning groove 7033, the cutter head 4 can rotate relative to the outer casing 1 to one side, meaning that one rotational direction of the cutter head 4 is locked, and it can rotate relative to the outer casing 1 in the other rotational direction. In this embodiment, the drive unit 7032 is also provided on the inner wall of the inner ring 703, and the two drive units 7032 are located on the outer sides of the first pawl 704 and the second pawl 705, respectively.

[0057] The end of the cutter head 4 near the stop assembly 7 can be called the connecting end, and the end of the cutter head 4 extending out of the outer shell 1 can be called the adapter end. A connecting sleeve 5 is provided at the connecting end, with polygonal connecting holes at both ends of the connecting sleeve 5. The outer wall of the gear ring 707 and the connecting end are both polygonal in shape. The gear ring 707 and the connecting end are respectively fitted into the connecting holes at both ends of the connecting sleeve 5. To improve the stability of the cutter head 4 and the connecting sleeve 5, a pad 6 can be placed in the connecting hole where the connecting sleeve 5 and the cutter head 4 mate. This pad 6 can also be a magnet. Utilizing the polygonal contour design, synchronous rotation of the gear ring 707, the connecting sleeve 5, and the cutter head 4 is achieved, avoiding relative rotation. Furthermore, the cutter head 4 is a replaceable design; simply adapt the connecting end of the cutter head 4 to the connecting hole of the connecting sleeve 5. The adapter end of the cutter head 4 can be a straight line, a cross shape, or other shape that can adapt to the corresponding workpiece.

[0058] like Figure 8As shown, when the driving component is in the middle position, that is, when the positioning groove 7033 in the middle on the inner wall of the inner ring 703 engages with the ball 7021, the two driving parts 7032 on the inner ring 703 do not act on the first claw 704 and the second claw 705. At this time, the first claw 704 and the second claw 705 are both engaged with the gear ring 707, so that the gear ring 707 cannot rotate relative to the fixed post 702 and the outer shell 1, and both directions are restricted.

[0059] When the rotating switch 2 drives the drive unit to rotate counterclockwise, the drive part 7032 on the left side of the inner ring 703 pushes open the first pawl 704, causing the first pawl 704 to separate from the gear ring 707, while the second pawl 705 remains engaged with the gear ring 707. At this time, the gear ring 707 connected to the cutter head 4 can rotate clockwise relative to the fixed post 702 and the outer shell 1. When rotating, the gear ring 707 pushes the second pawl 705 to swing to the left. Since there is an elastic element 706 between the first pawl 704 and the second pawl 705 and the second pawl 705 has a certain swing space on the left side, the second pawl 705 can be pushed by the gear ring 707 without restricting the gear ring 707. When the gear ring 707 rotates counterclockwise, the elastic element 706 exerts a rightward force on the second pawl 705, and the driving part 7032 located on the right side of the inner ring 703 blocks the second pawl 705, preventing the second pawl 705 from being pushed by the gear ring 707. This restricts the counterclockwise rotation of the gear ring 707 by the second pawl 705. Similarly, when the rotating switch 2 drives the driving part to rotate clockwise, the gear ring 707 cannot rotate clockwise.

[0060] As another implementation method, in addition to the above-described stop component 7, other bidirectional limiting and switchable methods can also be used, such as a bidirectional ratchet, the specific method of which can be found in the prior art. When applying different bidirectional limiting and switchable embodiments, the drive unit 7032 for switching the limiting direction should be connected to the switch unit 2 of this embodiment.

[0061] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A reversible screwdriver, characterized in that, Includes housing, blade, stop assembly, and switch components; The stop assembly is disposed within the housing, one end of the cutter head is located within the housing and cooperates with the stop assembly, and the other end of the cutter head extends outside the housing; the stop assembly can restrict the rotation of the cutter head relative to the housing in one or both directions; The outer shell extends along the length of the cutter head; the switch is embedded on the surface of the outer shell, and the side of the switch facing the inner cavity of the outer shell is connected to the stop assembly. By rotating the switch, the limiting direction of the stop assembly on the cutter head can be switched.

2. The reversible screwdriver according to claim 1, characterized in that, The switch is provided with a boss, which faces the side of the cutter head.

3. The reversible screwdriver according to claim 2, characterized in that, The outer shell surface is provided with holes, a portion of which is hollowed out and communicates with the inner cavity of the outer shell, and a support portion is provided in the portion of the holes; the switch is rotatably connected to the support portion, and the switch is connected to the stop assembly through the hollowed-out position of the holes.

4. The reversible screwdriver according to claim 1, characterized in that, The outer casing is provided with a protective sleeve, which is detachably fitted onto one end of the outer casing near the cutter head. The protective sleeve extends beyond the end of the outer casing and protrudes from the cutter head, and is located on the periphery of the cutter head.

5. The reversible screwdriver according to claim 4, characterized in that, The outer shell is provided with a limiting platform at the end near the cutter head, which divides the outer shell into a handle part and a connecting part; the protective sleeve is fitted onto the connecting part; The connecting part is provided with an L-shaped anti-detachment groove, and one end of the anti-detachment groove is provided with an opening; the inner side of the protective sleeve is provided with a protrusion, and the protrusion can be inserted into the anti-detachment groove through the opening.

6. The reversible screwdriver according to claim 1, characterized in that, The outer shell has a protrusion at one end away from the cutter head and is provided with multiple protrusions, the ends of which are spherical.

7. The reversible screwdriver according to claim 1, characterized in that, The stop assembly includes a fixed post, a driving member, a first pawl, a second pawl, and a gear ring; the fixed post is fixed in the inner cavity of the housing and extends along its length; the first pawl and the second pawl are swayably mounted on the fixed post, and the first pawl and the second pawl can respectively limit the rotation of the gear ring, with the limiting directions of the first pawl and the second pawl being opposite; the driving member is rotatably mounted on the fixed post, and the driving member is used to actuate the first pawl and the second pawl; the driving member is connected to the switch member, and when the switch member rotates, it drives the driving member to rotate, thereby actuating the first pawl or the second pawl to switch the limiting direction of the gear ring; the gear ring is connected to the cutter head.

8. The reversible screwdriver according to claim 7, characterized in that, The teeth of the gear ring are located on the inner side. The first and second pawls are inserted into the gear ring and partially extend outward. An elastic element is provided between the first and second pawls. Under normal conditions, the elastic force of the elastic element causes the teeth of the first and second pawls to simultaneously engage with the gear ring. The driving member is provided with a driving part at the corresponding position of the first and second pawls. When the driving member rotates, the driving part causes the first or second pawl to swing, thereby causing the first or second pawl to separate from the gear ring. A positioning structure is provided between the driving member and the fixed post. The positioning structure is used to position the driving member at the position where the first pawl engages with the gear ring, the second pawl engages with the gear ring, or both the first and second pawls engage with the gear ring simultaneously.

9. The reversible screwdriver according to claim 8, characterized in that, The driving component has a first gear tooth, and the switching component has a corresponding second gear tooth, the first gear tooth and the second gear tooth meshing together.

10. The reversible screwdriver according to claim 7, characterized in that, The end of the cutter head near the stop assembly is the connecting end, and the end of the cutter head extending out of the housing is the adapter end; a connecting sleeve is provided at the connecting end, and polygonal connecting holes are provided at both ends of the connecting sleeve. The outer wall of the toothed ring and the connecting end are both polygonal in shape, and the toothed ring and the connecting end are respectively matched and embedded in the connecting holes at both ends of the connecting sleeve.

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