Screwdriver

Abstract

The utility model provides a screwdriver, and relates to the field of dismounting tools. The screwdriver comprises a handle, a screwdriver rod, a screwdriver head and a clamping jaw mechanism, the screwdriver rod is connected to the handle, and the screwdriver head is arranged at the end, away from the handle, of the screwdriver rod and used for being matched with a screw. The clamping jaw mechanism is arranged on the handle and used for clamping screws. The screwdriver is provided with the tool bit and the clamping jaw mechanism, and for a screw which is not slipped, the tool bit can be matched with the screw, so that the screw can be dismounted. And for the slippery screw, the screw can be clamped by the clamping jaw mechanism, and the slippery screw can be conveniently disassembled by screwing the screwdriver. The screwdriver has a good dismounting effect on screws which are not slipped and screws which are slipped, and the dismounting efficiency of a battery is improved.

Description

Technical Field

[0001] The present application relates to the field of disassembly tools, and in particular to a screwdriver. Background Art

[0002] Batteries are widely used in the field of new energy, such as electric vehicles and new energy vehicles. New energy vehicles and electric vehicles have become a new trend in the development of the automotive industry. During the life cycle of batteries, batteries often need to be disassembled, for example, to disassemble and repair batteries. Another example is to disassemble and recycle batteries. However, the efficiency of battery disassembly is currently low. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a screwdriver, which aims to improve the problem of low efficiency in disassembling batteries in the related art.

[0004] An embodiment of the present application provides a screwdriver, which includes a handle, a shank, a cutter head and a clamping mechanism, wherein the shank is connected to the handle; the cutter head is arranged at an end of the shank away from the handle, and the cutter head is used to cooperate with a screw; the clamping mechanism is arranged on the handle, and the clamping mechanism is used to clamp the screw.

[0005] In the above technical solution, the screwdriver is provided with a cutter head and a clamping mechanism. For a screw that has not been stripped, the cutter head can be used to cooperate with the screw to remove the screw. For a screw that has been stripped, the clamping mechanism can be used to clamp the screw, and the stripped screw can be easily removed by twisting the screwdriver. The screwdriver has a good disassembly effect on both screws that have not been stripped and screws that have been stripped, which is conducive to improving the disassembly efficiency of the battery.

[0006] As an optional technical solution of an embodiment of the present application, the tool rod is transmission-connected to the clamping mechanism, and the tool rod is configured to be able to drive the clamping mechanism to clamp the screw.

[0007] In the above technical solution, the tool rod is linked with the clamping mechanism, and the tool rod can drive the clamping mechanism to clamp the screw. There is no need to set up other driving mechanisms to drive the clamping mechanism, which is conducive to simplifying the structure of the screwdriver and reducing the weight of the screwdriver, thereby optimizing the use experience of the screwdriver and improving the efficiency of disassembling the screws.

[0008] As an optional technical solution of an embodiment of the present application, the knife rod is rotatably connected to the handle, and the rotation axis of the knife rod intersects with the axis of the knife rod.

[0009] In the above technical solution, the blade is rotatably connected to the handle, and when the blade rotates relative to the handle, the blade can drive the clamping mechanism to clamp the screw. The blade is the longest part of the screwdriver, and by rotating the blade relative to the handle, the effect of saving distance and effort can be achieved, that is, when the blade is rotated to drive the clamping mechanism to clamp the screw, although the blade needs to rotate a large distance, it is relatively more labor-saving, so that the clamping force of the clamping mechanism can be greater when clamping the screw, so that the screw can be clamped more firmly.

[0010] As an optional technical solution of an embodiment of the present application, the rotation axis of the knife rod is perpendicular to the axis of the knife rod.

[0011] In the above technical solution, when the rotation axis of the tool rod is perpendicular to the axis of the tool rod, after the tool rod is rotated so that the clamping mechanism clamps the screw, the tool rod can serve as a force arm to drive the screwdriver to rotate, thereby driving the clamping mechanism to rotate along the rotation axis of the screwdriver to remove the screw.

[0012] As an optional technical solution of an embodiment of the present application, the clamping mechanism includes a plurality of clamping jaws, a plurality of connecting rods and a movable member, wherein the plurality of clamping jaws are hinged to the handle; one end of each connecting rod is hinged to a clamping jaw; the movable member is movably arranged on the handle, and the movable member is hinged to the other end of each connecting rod, and the plurality of clamping jaws are arranged along the circumference of the movable member, and the knife rod is configured to be able to drive the movable member to move relative to the handle so that the plurality of clamping jaws clamp the screw.

[0013] In the above technical solution, each connecting rod connects a clamping claw and a moving part. When the moving part moves, the connecting rod drives the multiple clamping claws to move closer or farther from each other to clamp or loosen the screw. When the tool bar rotates relative to the handle, the tool bar can drive the moving part to move relative to the handle, so that the multiple clamping claws clamp the screw. Through the transmission of the moving part and the connecting rod, the rotation of the tool bar is converted into the clamping action of the clamping claw, which has a simple structure and low cost.

[0014] As an optional technical solution of an embodiment of the present application, a guide surface is provided at the end of the knife rod away from the knife head, the movable member abuts against the guide surface, and the guide surface is configured to guide the movable member to move relative to the handle when the knife rod rotates relative to the handle.

[0015] In the above technical solution, when the shank rotates relative to the handle, the moving part contacts different positions of the guide surface to move relative to the housing under the action of the guide surface. The moving part is guided by the guide surface to move, the transmission is stable and reliable, and the space occupied is small, which is conducive to reducing the size and weight of the screwdriver.

[0016] As an optional technical solution of an embodiment of the present application, the guide surface has a first end and a second end, and along the extension direction of the tool rod, the first end is farther away from the tool head than the second end; the distance between the guide surface and the rotation axis of the tool rod gradually increases from the first end to the second end.

[0017] In the above technical solution, when the knife rod rotates relative to the handle, the movable member gradually transitions from the first end abutting against the guide surface to the second end abutting against the guide surface. Since the distance between the guide surface and the rotation axis of the knife rod gradually increases from the first end to the second end, the movable member will move relative to the shell under the action of the guide surface to drive multiple jaws to approach each other and clamp the screw.

[0018] As an optional technical solution of the embodiment of the present application, the guide surface is an arc surface.

[0019] In the above technical solution, the arc surface is relatively smooth and the transition is smooth, so that the thrust force exerted on the moving part when it moves relative to the guide surface changes less, and the moving part moves more smoothly and stably.

[0020] As an optional technical solution of an embodiment of the present application, the clamping mechanism also includes a first elastic element, which is arranged between the handle and the moving part, and the first elastic element is used to reset the moving part so that the multiple clamps loosen the screws.

[0021] In the above technical solution, the first elastic element is provided to reset the movable part, so that after the knife rod is reset, the movable part can be automatically reset, allowing the multiple clamping claws to loosen the screws, which is conducive to simplifying the operation and improving the efficiency of battery disassembly.

[0022] As an optional technical solution of an embodiment of the present application, the handle is provided with a limiting structure, and the limiting structure is used to limit the rotation angle of the knife rod.

[0023] In the above technical solution, a limit structure is provided to limit the rotation angle of the tool rod, which helps to remind the operator that the tool rod has been rotated into place and the clamping mechanism has clamped or loosened the screw, thereby reducing the risk of damage to the clamping mechanism due to excessive force caused by excessive rotation of the tool rod.

[0024] As an optional technical solution of an embodiment of the present application, the limiting structure includes a limiting groove, the end of the tool rod away from the tool head is accommodated in the limiting groove, the limiting groove includes a first groove wall surface and a second groove wall surface, the first groove wall surface and the second groove wall surface are used to abut against the tool rod to limit the rotation angle of the tool rod.

[0025] In the above technical solution, the end of the tool rod away from the tool head is accommodated in the limiting groove, which can not only protect the end of the tool rod away from the tool head to a certain extent, but also facilitate the abutment between the end of the tool rod away from the tool head and the first groove wall surface and the second groove wall surface, thereby limiting the rotation angle of the tool rod within the angle defined by the first groove wall surface and the second groove wall surface.

[0026] As an optional technical solution of an embodiment of the present application, the limit groove also includes a third groove wall surface and a fourth groove wall surface arranged opposite to each other, the first groove wall surface connects the third groove wall surface and the fourth groove wall surface, the second groove wall surface connects the third groove wall surface and the fourth groove wall surface, and the third groove wall surface and the fourth groove wall surface are configured to limit the movement of the tool rod along the rotation axis of the tool rod.

[0027] In the above technical solution, the third groove wall and the fourth groove wall can limit the movement of the tool rod along the rotation axis of the tool rod. On the one hand, it can reduce the risk of shaking of the tool rod when the cutter head removes the screw; on the other hand, when the clamping mechanism is clamped on the screw and the clamping mechanism is driven to rotate around the rotation axis of the screw by rotating the tool rod, the third groove wall and the fourth groove wall can limit the movement of the tool rod, so that the force applied to the tool rod can be stably transmitted to the clamping mechanism, making it more convenient and stable when the clamping mechanism removes the screw.

[0028] As an optional technical solution of an embodiment of the present application, the screwdriver includes a first locking mechanism, which has a first locking state and a first unlocking state. When the first locking mechanism is in the first locking state, the first locking mechanism limits the rotation of the knife bar relative to the handle. When the first locking mechanism is in the first locking state, the knife bar can rotate relative to the handle.

[0029] In the above technical solution, the first locking mechanism is provided to lock or unlock the knife bar to limit or allow the knife bar to rotate relative to the handle. When the cutter head needs to remove the screw, the first locking mechanism can be placed in the first locking state to limit the knife bar from rotating relative to the handle, thereby stably transmitting the external force applied to the handle to the cutter head, so as to facilitate the cutter head to remove the screw. When the clamping mechanism is required to clamp the screw, the first locking mechanism can be placed in the first unlocking state to allow the knife bar to rotate relative to the handle, thereby driving the clamping mechanism to clamp the screw.

[0030] As an optional technical solution of an embodiment of the present application, the first locking mechanism includes a latch, the handle is provided with a first socket, and the knife rod is provided with a second socket. When the latch is inserted into the first socket and the second socket, the first locking mechanism is in the first locking state.

[0031] In the above technical solution, the bolt is inserted into the first insertion hole and the second insertion hole to limit the rotation of the knife bar relative to the handle, and at this time, the first locking mechanism is in the first locking state. The bolt is pulled out of the second insertion hole to allow the knife bar to rotate relative to the handle, and at this time, the first locking mechanism is in the first unlocking state.

[0032] As an optional technical solution of an embodiment of the present application, the handle is provided with a third socket, and the axis of the first socket intersects with the axis of the third socket; the first locking mechanism includes a second elastic element and a limiter, the second elastic element is arranged between the limiter and the latch, and the second elastic element is configured to drive the limiter to be inserted into the third socket.

[0033] In the above technical solution, when the bolt is inserted into the handle, the bolt passes through the first and second sockets until the stopper is aligned with the third socket and is inserted into the third socket under the drive of the second elastic element, at which time the first locking mechanism is in the first locking state. When the bolt is pulled out of the handle, the second elastic element is compressed, and the stopper withdraws from the third socket to allow the bolt to be disengaged from the second and first sockets, at which time the first locking mechanism is in the first unlocking state. By providing the second elastic element and the stopper, a certain external force is required when pulling out the bolt, thereby reducing the risk of the bolt accidentally disengaging from the second socket.

[0034] As an optional technical solution of an embodiment of the present application, the clamping mechanism includes a plurality of clamping jaws, a plurality of connecting rods and a movable member, wherein the plurality of clamping jaws are hinged to the handle; one end of each connecting rod is hinged to a clamping jaw; the movable member is movably arranged on the handle, the movable member is hinged to the other end of each connecting rod, the plurality of clamping jaws are arranged along the circumference of the movable member, and the movable member is configured to be movable relative to the handle so that the plurality of clamping jaws clamp or loosen the screws.

[0035] In the above technical solution, each connecting rod connects a clamping claw and a moving part. When the moving part moves, the connecting rod drives multiple clamping claws to move closer to or away from each other to clamp or loosen the screw. The structure is simple, the transmission is stable and the cost is low.

[0036] As an optional technical solution of an embodiment of the present application, the clamp includes a clamp and a connecting arm, the clamp has a contact portion, and the contact portion is used to contact the screw; the connecting arm is hinged to the handle, and the connecting arm is hinged to one end of the connecting rod, and the clamp is adjustably arranged on the connecting arm along a first direction, and the first direction intersects with the rotation axis of the connecting arm.

[0037] In the above technical solution, the position of the chuck is adjustably arranged on the connecting arm, thereby facilitating the adjustment of the position of the chuck and the connecting arm, so that the contact parts of the multiple chucks are moved closer to or farther from each other to adapt to screws of different models.

[0038] As an optional technical solution of an embodiment of the present application, the connecting arm includes a first arm and a second arm, the second arm is connected to one end of the first arm, the second arm and the first arm are set at an obtuse angle, the chuck is adjustably set on the first arm along the extension direction of the first arm, the end of the second arm away from the first arm is hinged to the connecting rod, and the connecting arm is hinged to the handle at the connection position between the first arm and the second arm.

[0039] In the above technical solution, by connecting the second arm to one end of the first arm and setting the first arm and the second arm at an obtuse angle, it is helpful to reduce the volume occupied by the connecting arm in the direction perpendicular to the rotation axis of the connecting arm, which is helpful to reduce the volume of the screwdriver.

[0040] As an optional technical solution of an embodiment of the present application, the clamp includes a second locking mechanism, the second locking mechanism includes a second locking state and a second unlocking state, when the second locking mechanism is in the second locking state, the second locking mechanism locks the chuck to the first arm, when the second locking mechanism is in the second unlocking state, the chuck can move relative to the first arm.

[0041] In the above technical solution, the second locking mechanism is provided to lock or unlock the chuck to limit or allow the chuck to move relative to the first arm. When the relative position of the chuck and the first arm needs to be adjusted, the second locking mechanism can be placed in an unlocked state to allow the chuck to move relative to the first arm. After the adjustment is completed, the second locking mechanism is placed in a locked state to lock the chuck to the first arm.

[0042] As an optional technical solution of an embodiment of the present application, the clamp has a contact portion for contacting the screw, the minimum distance between the contact portion and the rotation axis of the clamp is L1, and the distance between the rotation axis of the clamp and the hinge axis of the clamp and the connecting rod is L2, satisfying: L1>L2.

[0043] In the above technical solution, the minimum distance between the contact portion and the rotation axis of the clamp is equivalent to the length of the resistance arm, and the distance between the rotation axis of the clamp and the hinge axis of the clamp and the connecting rod is equivalent to the length of the power arm, L1>L2, that is, the length of the resistance arm is greater than the length of the power arm. According to the principle of lever, when the length of the resistance arm is greater than the length of the power arm, distance can be saved, thereby facilitating multiple clamps to quickly clamp screws.

[0044] As an optional technical solution of an embodiment of the present application, the clamping jaw has a contact portion, and the contact portion includes a toothed structure for contacting the screw.

[0045] In the above technical solution, by providing a toothed structure on the contact portion of the clamping jaw, the clamping jaw is conveniently inserted into the gap between the screw and the workpiece, thereby facilitating stable clamping of the screw.

[0046] As an optional technical solution of an embodiment of the present application, the handle includes a shell and a cover body, the shell has an opening, the clamping mechanism is arranged in the shell, and the cover body is detachably connected to the shell and closes the opening.

[0047] In the above technical solution, when the clamping mechanism is not needed, the cover is covered on the housing and closes the opening to protect the clamping mechanism. When the clamping mechanism is needed, the cover can be removed from the housing to expose the clamping mechanism, so that the clamping mechanism can clamp the screw.

[0048] As an optional technical solution of the embodiment of the present application, the shell and the cover are plug-fitted.

[0049] In the above technical solution, the shell body and the cover body are disassembled and matched, so that the cover body can be quickly disassembled and assembled.

[0050] As an optional technical solution of an embodiment of the present application, the handle includes a shell and a mounting frame, the mounting frame is arranged on the shell, the knife rod and the clamping mechanism are both arranged on the mounting frame, and the strength of the mounting frame is higher than the strength of the shell.

[0051] In the above technical solution, the housing and the mounting frame can be made of different materials, so that the strength of the mounting frame is higher than the strength of the housing. In this way, the housing can be made of a lighter material to reduce the weight of the screwdriver. In addition, the housing can also be made of a material that fits better in the hand, making the screwdriver more comfortable to use. The strength of the mounting frame is higher than the strength of the housing, so as to provide sufficient strength to install the clamping mechanism and the shank.

[0052] As an optional technical solution of the embodiment of the present application, the cutter head is detachably connected to the cutter rod.

[0053] In the above technical solution, by making the cutter head detachably connected to the cutter rod, on the one hand, when the cutter head is damaged, it can be repaired by replacing the cutter head. On the other hand, cutter heads of different models can be replaced to further improve the adaptability to removing different screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0055] Figure 1 A schematic diagram of the structure of a screwdriver provided in some embodiments of the present application;

[0056] Figure 2 An exploded view of a screwdriver provided in some embodiments of the present application;

[0057] Figure 3 A half-section view of a screwdriver provided in some embodiments of the present application;

[0058] Figure 4 A schematic diagram of the connection between the knife bar and the clamping mechanism provided in some embodiments of the present application;

[0059] Figure 5 A schematic diagram of the structure of a mounting frame of a handle provided in some embodiments of the present application;

[0060] Figure 6 A half-section view of a screwdriver provided in some embodiments of the present application at another viewing angle;

[0061] Figure 7 for Figure 6 A magnified view of position A in the middle;

[0062] Figure 8 A schematic diagram of the structure of the clamp provided in some embodiments of the present application;

[0063] Fig. 9 An exploded view of a clamping jaw provided for some embodiments of the present application;

[0064] Fig.10 A schematic front view of a clamp provided in some embodiments of the present application;

[0065] Fig.11 A schematic diagram of the structure of a screwdriver (with the housing and the end cover separated) provided in some embodiments of the present application;

[0066] Fig.12 A schematic diagram of the structure of a shell provided in some embodiments of the present application.

[0067] Icons: 10-screwdriver; 100-handle; 110-housing; 111-slot; 120-cover; 130-mounting frame; 131-limiting slot; 1311-first slot wall; 1312-second slot wall; 1313-third slot wall; 1314-fourth slot wall; 132-mounting hole; 133-first plug hole; 134-body; 135-connecting part; 136-mounting part; 137-third plug hole; 200-tool bar; 210-rotating shaft; 220-guide surface; 221-first end; 222-second end; 230-second jack; 300-cutter head; 400-clamping mechanism; 410-clamping jaw; 411-chuck; 4111-contact portion; 4112-anti-slip protrusion; 4113-sliding protrusion; 412-connecting arm; 4121-first arm; 41211-sliding groove; 4122-second arm; 420-connecting rod; 430-moving part; 431-annular protrusion; 440-first elastic element; 500-first locking mechanism; 510-latch pin; 520-second elastic element; 530-limiting body; 600-second locking mechanism. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0069] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0070] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0071] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0072] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0073] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0074] The term "plurality" used in the present application refers to two or more (including two).

[0075] In the present application, battery cells may include lithium-ion secondary battery cells, lithium-ion primary battery cells, lithium-sulfur battery cells, sodium-lithium-ion battery cells, sodium-ion battery cells or magnesium-ion battery cells, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0076] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application may include a battery module or a battery pack. The battery generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells to a certain extent.

[0077] The battery cell includes an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet and a separator. The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work. The positive electrode sheet includes a positive electrode collector and a positive electrode active material layer. The positive electrode active material layer is coated on the surface of the positive electrode collector. The positive electrode collector not coated with the positive electrode active material layer protrudes from the positive electrode collector coated with the positive electrode active material layer. The positive electrode collector not coated with the positive electrode active material layer serves as a positive sub-pole ear. Taking lithium-ion batteries as an example, the material of the positive electrode collector can be aluminum, and the positive electrode active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium or lithium manganese oxide. The negative electrode sheet includes a negative electrode collector and a negative electrode active material layer. The negative electrode active material layer is coated on the surface of the negative electrode collector. The negative electrode collector not coated with the negative electrode active material layer protrudes from the negative electrode collector coated with the negative electrode active material layer. The negative electrode collector not coated with the negative electrode active material layer serves as a negative sub-pole ear. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon or silicon, etc. In order to ensure that a large current can pass without melting, the number of positive pole ears is multiple and stacked together, and the number of negative pole ears is multiple and stacked together. The material of the isolation film may be PP (polypropylene) or PE (polyethylene), etc. In addition, the electrode assembly may be a winding structure or a laminated structure, and the embodiments of the present application are not limited thereto.

[0078] At present, from the perspective of market development, the application of batteries is becoming more and more extensive. Batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of battery application areas, its market demand is also constantly expanding.

[0079] During the life cycle of a battery, it is often necessary to disassemble the battery, for example, to disassemble and repair the battery. Another example is to disassemble and recycle the battery. Disassembling and recycling the battery can not only reduce pollution to the environment, but the recycled materials can also be reused, reducing production costs. However, the efficiency of disassembling batteries is currently low.

[0080] When disassembling a battery, you often encounter screws with stripped threads, which are difficult to remove with ordinary screwdrivers. If you forcefully disassemble the battery, it is easy to cause the battery cell to deform, damage, leak, or short-circuit, which can easily cause the battery cell to catch fire or even explode. Removing stripped screws wastes a lot of disassembly time, resulting in low efficiency in disassembling the battery.

[0081] In view of this, an embodiment of the present application provides a screwdriver, which includes a handle, a shank, a bit and a clamping mechanism, wherein the shank is connected to the handle, the bit is arranged at one end of the shank away from the handle, and the bit is used to cooperate with a screw. The clamping mechanism is arranged on the handle, and the clamping mechanism is used to clamp the screw.

[0082] The screwdriver is provided with a blade and a clamping mechanism. For a screw that has not been stripped, the blade can be used to cooperate with the screw to remove the screw. For a screw that has been stripped, the clamping mechanism can be used to clamp the screw, and the stripped screw can be easily removed by twisting the screwdriver. The screwdriver has a good disassembly effect on both screws that have not been stripped and screws that have been stripped, which is conducive to improving the disassembly efficiency of the battery.

[0083] The technical solution described in the embodiment of the present application is suitable for removing stripped screws, which is beneficial to improving the removal efficiency.

[0084] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a screwdriver 10 provided in some embodiments of the present application. Figure 2 An exploded view of a screwdriver 10 provided in some embodiments of the present application. Figure 3 A half-section view of a screwdriver 10 provided in some embodiments of the present application. The present application provides a screwdriver 10, which includes a handle 100, a shank 200, a cutter head 300, and a clamping mechanism 400. The shank 200 is connected to the handle 100, and the cutter head 300 is arranged at one end of the shank 200 away from the handle 100, and the cutter head 300 is used to cooperate with a screw. The clamping mechanism 400 is arranged on the handle 100, and the clamping mechanism 400 is used to clamp a screw.

[0085] The handle 100 is a portion of the screwdriver 10 for holding, and the shank 200 and the clamping mechanism 400 are both mounted on the handle 100 .

[0086] The knife rod 200 is a rod-shaped structure, one end of the knife rod 200 is connected to the handle 100 , and the other end of the knife rod 200 is connected to the knife head 300 .

[0087] The cutter head 300 is a structure used to cooperate with the head of the screw so as to turn the screw. The cutter head 300 can be cross-shaped, straight-shaped, plum-shaped, etc.

[0088] The clamping mechanism 400 is connected to the handle 100, and the clamping mechanism 400 is used to clamp the screw. In some embodiments, when the clamping mechanism 400 clamps the screw, the cutter head 300 is separated from the screw. When the cutter head 300 is engaged with the screw, the clamping mechanism 400 is separated from the screw.

[0089] The screwdriver 10 is provided with a cutter head 300 and a clamping mechanism 400. For a screw that has not been stripped, the cutter head 300 can be used to cooperate with the screw to remove the screw. For a screw that has been stripped, the clamping mechanism 400 can be used to clamp the screw, and the stripped screw can be conveniently removed by twisting the screwdriver 10. The screwdriver 10 has a good disassembly effect on both screws that have not been stripped and screws that have been stripped, which is conducive to improving the disassembly efficiency of the battery.

[0090] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the tool rod 200 is transmission-connected to the clamping mechanism 400, and the tool rod 200 is configured to drive the clamping mechanism 400 to clamp the screw.

[0091] The knife bar 200 and the clamping mechanism 400 are connected in a transmission manner, and the external force applied to the knife bar 200 can be transmitted to the clamping mechanism 400, so that the clamping mechanism 400 clamps the screw. In short, the knife bar 200 and the clamping mechanism 400 have a linkage relationship, and the knife bar 200 can drive the clamping mechanism 400 to clamp the screw.

[0092] The tool rod 200 is linked with the clamping mechanism 400. The tool rod 200 can drive the clamping mechanism 400 to clamp the screw. There is no need to set up other driving mechanisms to drive the clamping mechanism 400. This is conducive to simplifying the structure of the screwdriver 10 and reducing the weight of the screwdriver 10, thereby optimizing the use experience of the screwdriver 10 and improving the efficiency of disassembling the screws.

[0093] In other embodiments, the screwdriver 10 includes a driving mechanism, which is connected to the clamping mechanism 400, and is used to drive the clamping mechanism 400 to clamp or loosen. Optionally, the driving mechanism is also connected to the tool bar 200, and the driving mechanism is used to drive the tool bar 200 to rotate around its own axis to drive the tool head 300 to remove or install the screw.

[0094] In some other embodiments, the screwdriver 10 includes a control rod, which is connected to the clamping mechanism 400. When the control rod is manually pulled, the clamping mechanism 400 can be driven to clamp or loosen.

[0095] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 4 A schematic diagram of the connection between the knife rod 200 and the clamping mechanism 400 provided in some embodiments of the present application. Figure 5 The structure diagram of the mounting frame 130 of the handle 100 provided in some embodiments of the present application. In some embodiments, the knife bar 200 is rotatably connected to the handle 100 , and the rotation axis of the knife bar 200 intersects with the axis of the knife bar 200 .

[0096] The knife rod 200 is rotatably connected to the handle 100 , and the rotation axis of the knife rod 200 intersects with the axis of the knife rod 200 .

[0097] “The rotation axis of the knife rod 200 intersects with the axis of the knife rod 200” means that the rotation axis of the knife rod 200 is set at an angle with the axis of the knife rod 200. In other words, the rotation axis of the knife rod 200 is not parallel to the axis of the knife rod 200.

[0098] Optionally, a rotating shaft 210 is provided at one end of the knife bar 200 away from the knife head 300, and a mounting hole 132 is provided on the handle 100. The rotating shaft 210 is at least partially accommodated in the mounting hole 132 to realize the rotation connection between the knife bar 200 and the handle 100. The axis of the rotating shaft 210 is also the rotation axis of the knife bar 200, and the axis of the knife bar 200 is parallel to the extension direction of the knife bar 200.

[0099] The blade 200 is rotatably connected to the handle 100. When the blade 200 rotates relative to the handle 100, the blade 200 can drive the clamping mechanism 400 to clamp the screw. The blade 200 is the longest component in the screwdriver 10. By rotating the blade 200 relative to the handle 100, the effect of saving distance and effort can be achieved. That is, when the blade 200 is rotated to drive the clamping mechanism 400 to clamp the screw, although the blade 200 needs to rotate a large distance, it is relatively more labor-saving, so that the clamping force of the clamping mechanism 400 can be greater when clamping the screw, so that the screw can be clamped more firmly.

[0100] In some embodiments, the rotation axis of the knife bar 200 is perpendicular to the axis of the knife bar 200 .

[0101] “The rotation axis of the knife rod 200 is perpendicular to the axis of the knife rod 200 ” means that the angle between the rotation axis of the knife rod 200 and the axis of the knife rod 200 is 90°.

[0102] When the rotation axis of the tool rod 200 is perpendicular to the axis of the tool rod 200, after rotating the tool rod 200 so that the clamping mechanism 400 clamps the screw, the tool rod 200 can serve as a force arm to drive the screwdriver 10 to rotate, thereby driving the clamping mechanism 400 to rotate along the rotation axis of the screwdriver 10 to remove the screw.

[0103] In other embodiments, the knife bar 200 is movably connected to the handle 100 , and when the knife bar 200 moves relative to the handle 100 , the knife bar 200 drives the clamping mechanism 400 to clamp the screw.

[0104] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5In some embodiments, the clamp mechanism 400 includes a plurality of clamps 410, a plurality of connecting rods 420, and a moving member 430. The plurality of clamps 410 are hinged to the handle 100, one end of each connecting rod 420 is hinged to a clamp 410, and the moving member 430 is movably disposed on the handle 100, and the moving member 430 is hinged to the other end of each connecting rod 420. The plurality of clamps 410 are arranged along the circumference of the moving member 430. The shank 200 is configured to be able to drive the moving member 430 to move relative to the handle 100, so that the plurality of clamps 410 clamp the screw.

[0105] The clamping jaw 410 is a component used in the clamping jaw mechanism 400 to contact and clamp the screw. The clamping jaw mechanism 400 may include two clamping jaws 410, three clamping jaws 410, four clamping jaws 410, or more than four clamping jaws 410. Multiple clamping jaws 410 can clamp the screw together to increase the stability of the screw clamping.

[0106] The moving member 430 is movably disposed on the handle 100 , and the moving member 430 can move relative to the housing 110 when the knife rod 200 rotates relative to the housing 110 .

[0107] The connecting rod 420 is a transmission component connecting the clamping jaw 410 and the moving member 430. The connecting rod 420 and the clamping jaw 410 are arranged one by one. One end of the connecting rod 420 is hinged to the clamping jaw 410, and the other end of the connecting rod 420 is hinged to the moving member 430. A plurality of connecting rods 420 are arranged along the circumference of the moving member 430, and accordingly, a plurality of clamping jaws 410 are also arranged along the circumference of the moving member 430, so that the plurality of clamping jaws 410 cooperate to clamp the screw when they are close to each other.

[0108] When the knife bar 200 rotates relative to the handle 100 , the moving member 430 can be driven to move relative to the handle 100 , and the transmission is transmitted through the connecting rod 420 to drive the multiple clamping jaws 410 to move closer to each other to achieve the clamping of the screw.

[0109] Each connecting rod 420 is connected to a clamping jaw 410 and a moving member 430. When the moving member 430 moves, the connecting rod 420 drives the multiple clamping jaws 410 to move closer to or farther from each other to clamp or loosen the screw. When the arbor 200 rotates relative to the handle 100, the arbor 200 can drive the moving member 430 to move relative to the handle 100, so that the multiple clamping jaws 410 clamp the screw. Through the transmission of the moving member 430 and the connecting rod 420, the rotation of the arbor 200 is converted into the clamping action of the clamping jaws 410, which has a simple structure and low cost.

[0110] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5In some embodiments, the end of the knife bar 200 away from the knife head 300 is provided with a guide surface 220, and the moving member 430 abuts against the guide surface 220. The guide surface 220 is configured to guide the moving member 430 to move relative to the handle 100 when the knife bar 200 rotates relative to the handle 100.

[0111] The guide surface 220 is used to abut against the moving member 430, so as to guide the moving member 430 to move relative to the handle 100 when the knife bar 200 rotates relative to the handle 100. The guide surface 220 may be an inclined surface or a curved surface.

[0112] When the shank 200 rotates relative to the handle 100, the moving member 430 abuts against different positions of the guide surface 220 to move relative to the housing 110 under the action of the guide surface 220. The moving member 430 is guided to move by the guide surface 220, and the transmission is stable and reliable, and the space occupied is small, which is conducive to reducing the volume and weight of the screwdriver 10.

[0113] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the guide surface 220 has a first end 221 and a second end 222, and along the extension direction of the knife rod 200, the first end 221 is farther away from the cutter head 300 than the second end 222. The distance between the guide surface 220 and the rotation axis of the knife rod 200 gradually increases from the first end 221 to the second end 222.

[0114] When the cutter head 300 is used to remove the screw, the clamping mechanism 400 is in a relaxed state, and at this time, the moving member 430 abuts against the first end 221 of the guide surface 220. When the clamping mechanism 400 is required to clamp the screw, the knife bar 200 can be driven to rotate relative to the handle 100. During the rotation of the knife bar 200 relative to the handle 100, the moving member 430 gradually transitions from abutting against the first end 221 to abutting against the second end 222, and finally abuts against the second end 222. At this time, the clamping mechanism 400 is clamped to clamp the screw.

[0115] Please refer to Figure 4 The first end 221 of the guide surface 220 is farther away from the cutter head 300 than the second end 222 of the guide surface 220 along the extension direction of the cutter bar 200. The first end 221 is closer to the rotation axis of the cutter bar 200 than the second end 222, and the distance between the guide surface 220 and the rotation axis of the cutter bar 200 gradually increases from the first end 221 to the second end 222, so as to guide the moving member 430 to move relative to the handle 100 when the cutter bar 200 rotates relative to the handle 100.

[0116] When the knife rod 200 rotates relative to the handle 100, the movable member 430 gradually transitions from the first end 221 abutting against the guide surface 220 to the second end 222 abutting against the guide surface 220. Since the distance between the guide surface 220 and the rotation axis of the knife rod 200 gradually increases from the first end 221 to the second end 222, the movable member 430 will move relative to the shell 110 under the action of the guide surface 220 to drive the multiple jaws 410 to approach each other and clamp the screws.

[0117] Optionally, the guide surface 220 is an arc surface.

[0118] The end of the shank 200 away from the cutter head 300 may be hemispherical, in which case the guide surface 220 is a part of the spherical surface of the hemispherical end. The end of the shank 200 away from the cutter head 300 may also be semi-cylindrical, in which case the guide surface 220 is a part of the circumferential surface of the semi-cylindrical end.

[0119] The arc surface is relatively smooth and has a smooth transition, so that the thrust force applied to the moving member 430 when it moves relative to the guide surface 220 changes less, and the moving member 430 moves more smoothly and stably.

[0120] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the clamp mechanism 400 further includes a first elastic element 440, which is disposed between the handle 100 and the moving member 430. The first elastic element 440 is used to reset the moving member 430 so that the plurality of clamps 410 loosen the screws.

[0121] The first elastic element 440 acts between the handle 100 and the moving member 430, and the first elastic element 440 is used to reset the moving member 430. Figure 3 and Figure 4 When the knife bar 200 rotates clockwise relative to the handle 100, the knife bar 200 drives the moving member 430 to move leftward, the first elastic element 440 is compressed, and the elastic potential energy is accumulated, and the plurality of clamping jaws 410 move together to clamp the screw. When the knife bar 200 rotates counterclockwise to reset, the first elastic element 440 releases the accumulated elastic potential energy, thereby driving the moving member 430 to move rightward, and the plurality of clamping jaws 410 move away from each other, thereby loosening the screw.

[0122] The first elastic element 440 can be a spring, rubber, reed, etc. Figure 3 and Figure 4 ,exist Figure 3 and Figure 4In the embodiment shown, the first elastic element 440 is a spring. The first elastic element 440 is sleeved on the moving member 430. The outer peripheral surface of the moving member 430 is convexly provided with an annular protrusion 431. One end of the first elastic element 440 abuts against the annular protrusion 431, and the other end of the first elastic element 440 abuts against the handle 100.

[0123] By setting the first elastic element 440 to reset the moving part 430, after the knife rod 200 is reset, the moving part 430 can be automatically reset, allowing the multiple clamping claws 410 to loosen the screws, which is helpful to simplify the operation and improve the efficiency of disassembling the battery.

[0124] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the handle 100 is provided with a limiting structure, and the limiting structure is used to limit the rotation angle of the knife rod 200.

[0125] The limiting structure is a structure used to limit the rotation angle of the knife bar 200. For example, the limiting structure can limit the knife bar 200 to only rotate 90° clockwise or counterclockwise.

[0126] By setting a limit structure to limit the rotation angle of the tool rod 200, it is helpful to remind the operator that the tool rod 200 has been rotated into place, and the clamping mechanism 400 has clamped or loosened the screw, thereby reducing the risk of damage to the clamping mechanism 400 due to excessive force caused by excessive rotation of the tool rod 200.

[0127] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the limiting structure includes a limiting groove 131, and the end of the knife bar 200 away from the knife head 300 is accommodated in the limiting groove 131. The limiting groove 131 includes a first groove wall surface 1311 and a second groove wall surface 1312, and the first groove wall surface 1311 and the second groove wall surface 1312 are used to abut against the knife bar 200 to limit the rotation angle of the knife bar 200.

[0128] In some embodiments, the handle 100 is provided with a limiting groove 131, and the end of the shank 200 away from the blade head 300 is accommodated in the limiting groove 131. When the shank 200 rotates relative to the handle 100, the groove wall surface of the limiting groove 131 can abut against the shank 200 to limit the rotation of the shank 200.

[0129] The limiting groove 131 includes a first groove wall surface 1311 and a second groove wall surface 1312. The first groove wall surface 1311 can abut against the knife bar 200 when the knife bar 200 rotates forward to limit the knife bar 200 from continuing to rotate forward. The second groove wall surface 1312 can abut against the knife bar 200 when the knife bar 200 rotates reversely to limit the knife bar 200 from continuing to rotate reversely. The first groove wall surface 1311 and the second groove wall surface 1312 work together to limit the rotation range of the knife bar 200. Please refer to 3, Figure 4 and Figure 5 ,exist Figure 3 , Figure 4 and Figure 5 In the embodiment shown, the first groove wall 1311 contacts the knife bar 200 when the knife bar 200 rotates clockwise to limit the knife bar 200 from continuing to rotate clockwise. The second groove wall 1312 contacts the knife bar 200 when the knife bar 200 rotates counterclockwise to limit the knife bar 200 from continuing to rotate counterclockwise.

[0130] The first groove wall surface 1311 and the second groove wall surface 1312 may be directly connected to each other, or the first groove wall surface 1311 and the second groove wall surface 1312 may be indirectly connected to each other through another groove wall surface.

[0131] The end of the tool rod 200 away from the tool head 300 is accommodated in the limiting groove 131, which can not only protect the end of the tool rod 200 away from the tool head 300 to a certain extent, but also facilitate the end of the tool rod 200 away from the tool head 300 to abut against the first groove wall 1311 and the second groove wall 1312, thereby limiting the rotation angle of the tool rod 200 within the angle defined by the first groove wall 1311 and the second groove wall 1312.

[0132] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 In some embodiments, the limiting groove 131 further includes a third groove wall surface 1313 and a fourth groove wall surface 1314 that are arranged opposite to each other, the first groove wall surface 1311 connects the third groove wall surface 1313 and the fourth groove wall surface 1314, and the second groove wall surface 1312 connects the third groove wall surface 1313 and the fourth groove wall surface 1314. The third groove wall surface 1313 and the fourth groove wall surface 1314 are configured to limit the movement of the knife bar 200 along the rotation axis of the knife bar 200.

[0133] The third groove wall surface 1313 and the fourth groove wall surface 1314 can be arranged opposite to each other along the extension direction of the rotation axis 210 of the knife bar 200, and the third groove wall surface 1313 and the fourth groove wall surface 1314 are respectively located on both sides of the knife bar 200 along the extension direction of the rotation axis 210 of the knife bar 200. The third groove wall surface 1313 and the fourth groove wall surface 1314 can fit with the knife bar 200 to limit the movement of the knife bar 200 along the extension direction of the rotation axis of the knife bar 200.

[0134] Please refer to 3. Figure 4 and Figure 5 ,exist Figure 3 , Figure 4 and Figure 5 In the illustrated embodiment, the third groove wall surface 1313 restricts the knife bar 200 from moving upward along the rotation axis of the knife bar 200 . The fourth groove wall surface 1314 restricts the knife bar 200 from moving downward along the rotation axis of the knife bar 200 .

[0135] The first groove wall surface 1311 can be directly connected to the third groove wall surface 1313 and the fourth groove wall surface 1314, or the first groove wall surface 1311 can be indirectly connected to the third groove wall surface 1313 and the fourth groove wall surface 1314 through other groove walls. Similarly, the second groove wall surface 1312 can be directly connected to the third groove wall surface 1313 and the fourth groove wall surface 1314, or the second groove wall surface 1312 can be indirectly connected to the third groove wall surface 1313 and the fourth groove wall surface 1314 through other groove walls. Please refer to 3, Figure 4 and Figure 5 ,exist Figure 3 , Figure 4 and Figure 5 In the illustrated embodiment, the first groove wall surface 1311 directly connects the third groove wall surface 1313 and the fourth groove wall surface 1314. The second groove wall surface 1312 directly connects the third groove wall surface 1313 and the fourth groove wall surface 1314.

[0136] The third groove wall 1313 and the fourth groove wall 1314 can limit the movement of the tool rod 200 along the rotation axis of the tool rod 200. On the one hand, it can reduce the risk of shaking of the tool rod 200 when the cutter head 300 removes the screw; on the other hand, when the clamping mechanism 400 is clamped on the screw and drives the clamping mechanism 400 to rotate around the rotation axis of the screw by rotating the tool rod 200, the third groove wall 1313 and the fourth groove wall 1314 can limit the movement of the tool rod 200, so that the force applied to the tool rod 200 can be stably transmitted to the clamping mechanism 400, making it more convenient and stable when the clamping mechanism 400 removes the screw.

[0137] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7, Figure 6 A half-section view of the screwdriver 10 provided in some embodiments of the present application at another viewing angle. Figure 7 for Figure 6 In some embodiments, the screwdriver 10 includes a first locking mechanism 500, and the first locking mechanism 500 has a first locking state and a first unlocking state. When the first locking mechanism 500 is in the first locking state, the first locking mechanism 500 restricts the shank 200 from rotating relative to the handle 100. When the first locking mechanism 500 is in the first locking state, the shank 200 can rotate relative to the handle 100.

[0138] The first locking mechanism 500 is a mechanism for locking or unlocking the knife bar 200 to restrict or allow the knife bar 200 to rotate relative to the handle 100. The first locking mechanism 500 is used to lock the knife bar 200 and the handle 100 when it is in the first locking state to restrict the knife bar 200 from rotating relative to the handle 100. The first locking mechanism 500 is also used to unlock the knife bar 200 and the handle 100 when it is in the first unlocking state to allow the knife bar 200 to rotate relative to the handle 100.

[0139] The first locking mechanism 500 is provided to lock or unlock the knife bar 200 to limit or allow the knife bar 200 to rotate relative to the handle 100. When the cutter head 300 is required to remove the screw, the first locking mechanism 500 can be placed in the first locking state to limit the knife bar 200 from rotating relative to the handle 100, thereby stably transmitting the external force applied to the handle 100 to the cutter head 300, so as to facilitate the cutter head 300 to remove the screw. When the clamping mechanism 400 is required to clamp the screw, the first locking mechanism 500 can be placed in the first unlocking state to allow the knife bar 200 to rotate relative to the handle 100, thereby driving the clamping mechanism 400 to clamp the screw.

[0140] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 In some embodiments, the first locking mechanism 500 includes a latch 510, the handle 100 is provided with a first insertion hole 133, and the knife bar 200 is provided with a second insertion hole 230. When the latch 510 is inserted into the first insertion hole 133 and the second insertion hole 230, the first locking mechanism 500 is in a first locking state.

[0141] The handle 100 is provided with a first insertion hole 133, and the knife bar 200 is provided with a second insertion hole 230. When the clamp mechanism 400 is in a relaxed state and the knife bar 200 is in an initial position, the first insertion hole 133 and the second insertion hole 230 are in corresponding positions, so that the latch 510 can be inserted into the first insertion hole 133 and the second insertion hole 230, thereby limiting the rotation of the knife bar 200 relative to the handle 100. At this time, the first locking mechanism 500 is in a first locking state. When the latch 510 is pulled out of the second insertion hole 230, the first locking mechanism 500 is in a first unlocking state.

[0142] By inserting the latch 510 into the first insertion hole 133 and the second insertion hole 230, the knife bar 200 is restricted from rotating relative to the handle 100, and at this time, the first locking mechanism 500 is in the first locking state. By pulling the latch 510 out of the second insertion hole 230, the knife bar 200 is allowed to rotate relative to the handle 100, and at this time, the first locking mechanism 500 is in the first unlocking state.

[0143] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 In some embodiments, the handle 100 is provided with a third plug hole 137, and the axis of the first plug hole 133 intersects with the axis of the third plug hole 137. The first locking mechanism 500 includes a second elastic element 520 and a limiting body 530, the second elastic element 520 is provided between the limiting body 530 and the latch 510, and the second elastic element 520 is configured to drive the limiting body 530 to be inserted into the third plug hole 137.

[0144] The angle between the axis of the first plug hole 133 and the axis of the third plug hole 137 may be an acute angle, or the angle between the axis of the first plug hole 133 and the axis of the third plug hole 137 may be a right angle.

[0145] The axis of the first jack 133 is parallel to the axis of the second jack 230 , the angle between the axis of the second jack 230 and the axis of the third jack 137 may be an acute angle, or the angle between the axis of the second jack 230 and the axis of the third jack 137 may be a right angle.

[0146] The second elastic element 520 connects the limiting body 530 and the plug 510, and acts between the limiting body 530 and the plug 510. When the plug 510 is inserted into the first plug hole 133 and the second plug hole 230, the second elastic element 520 is compressed by the hole wall of the first plug hole 133 and the second plug hole 230, and the elastic potential energy is accumulated. When the limiting body 530 reaches the third plug hole 137, the second elastic element 520 releases the elastic potential energy, and drives the limiting body 530 to be inserted into the third plug hole 137.

[0147] When the plug 510 is pulled out, a certain external force is required to compress the second elastic element 520 and cause the limiting body 530 to withdraw from the third plug hole 137 so that the plug 510 can be pulled out.

[0148] Optionally, an arc surface is provided on the limiting body 530, and the arc surface abuts against the hole wall surface of the third hole 137. When the pin 510 is pulled out, the hole wall surface of the third hole 137 gradually squeezes the arc surface, so that the limiting body 530 gradually withdraws from the third hole 137 and the second elastic element 520 is compressed.

[0149] In some embodiments, the limiting body 530 is a sphere.

[0150] When the latch 510 is inserted into the handle 100, the latch 510 passes through the first insertion hole 133 and the second insertion hole 230 until the limiting body 530 is aligned with the third insertion hole 137 and is inserted into the third insertion hole 137 under the drive of the second elastic element 520, at which time the first locking mechanism 500 is in the first locking state. When the latch 510 is pulled out of the handle 100, the second elastic element 520 is compressed, and the limiting body 530 withdraws from the third insertion hole 137 to allow the latch 510 to be disengaged from the second insertion hole 230 and the first insertion hole 133, at which time the first locking mechanism 500 is in the first unlocking state. By providing the second elastic element 520 and the limiting body 530, a certain external force is required when pulling out the latch 510, thereby reducing the risk of the latch 510 accidentally disengaging from the second insertion hole 230.

[0151] In some embodiments, in order to facilitate the insertion and removal of the plug 510, a pull ring is further provided at one end of the plug 510.

[0152] Please refer to Figure 8 , Fig. 9 and Fig.10 , Figure 8 A schematic diagram of the structure of the clamp 410 provided in some embodiments of the present application. Fig. 9 An exploded view of a clamping jaw 410 provided in accordance with some embodiments of the present application. Fig.10 A schematic front view of a clamping jaw 410 provided in some embodiments of the present application. In some embodiments, the clamping jaw mechanism 400 includes a plurality of clamping jaws 410, a plurality of connecting rods 420, and a moving member 430. The plurality of clamping jaws 410 are hinged to the handle 100, one end of each connecting rod 420 is hinged to a clamping jaw 410, and the moving member 430 is movably disposed on the handle 100, and the moving member 430 is hinged to the other end of each connecting rod 420. The plurality of clamping jaws 410 are arranged along the circumference of the moving member 430. The moving member 430 is configured to be movable relative to the handle 100 so that the plurality of clamping jaws 410 clamp or loosen the screws.

[0153] Each connecting rod 420 connects a clamping jaw 410 and a moving member 430. When the moving member 430 moves, the connecting rod 420 drives the multiple clamping jaws 410 to move closer to or farther away from each other to clamp or release the screw. The structure is simple, the transmission is stable, and the cost is low.

[0154] Please refer to Figure 8 , Fig. 9 and Fig.10 In some embodiments, the clamp 410 includes a clamp head 411 and a connecting arm 412. The clamp 410 has a contact portion 4111, and the contact portion 4111 is used to contact the screw. The connecting arm 412 is hinged to the handle 100, and the connecting arm 412 is hinged to one end of the connecting rod 420. Along a first direction, the clamp head 411 is adjustably arranged on the connecting arm 412, and the first direction intersects with the rotation axis of the connecting arm 412.

[0155] The chuck 411 has a contact portion 4111, wherein the contact portion 4111 is a portion for directly contacting and clamping the screw. The chuck 411 also has a main body portion, and the main body portion of the chuck 411 is used to connect with the connecting arm 412. Optionally, the chuck 411 can be a hook-shaped structure. The hook portion of the hook-shaped structure is the contact portion 4111 mentioned above.

[0156] The connecting arm 412 is hinged to the handle 100 and the connecting rod 420 , and the transmission is driven by the connecting arm 412 to drive the clamp 411 to clamp the screw.

[0157] The clamp 411 is connected to the connecting arm 412 in an adjustable manner along the first direction. The angle between the first direction and the rotation axis of the connecting arm 412 can be an acute angle or a right angle. Figure 8 and Fig. 9 The first direction may be the X direction shown in the figure. At this time, the first direction is perpendicular to the rotation axis of the connecting arm 412.

[0158] By adjusting the position of the clamp 411 to the connecting arm 412 in an adjustable manner, the position of the clamp 411 and the connecting arm 412 can be easily adjusted, so that the contact parts 4111 of the multiple clamps 411 are moved closer to or farther from each other to accommodate screws of different types.

[0159] Please refer to Figure 8 , Fig. 9 and Fig.10In some embodiments, the connecting arm 412 includes a first arm 4121 and a second arm 4122. The second arm 4122 is connected to one end of the first arm 4121, and the second arm 4122 and the first arm 4121 are arranged at an obtuse angle. Along the extension direction of the first arm 4121, the position of the clamp 411 is adjustably arranged on the first arm 4121. One end of the second arm 4122 away from the first arm 4121 is hinged to the connecting rod 420, and the connecting arm 412 is hinged to the handle 100 at the connection position of the first arm 4121 and the second arm 4122.

[0160] The first arm 4121 and the second arm 4122 are both linear structures. One end of the first arm 4121 is connected to one end of the second arm 4122. A first ray is drawn from the connection position of the first arm 4121 and the second arm 4122 along the extension direction of the first arm 4121, and a second ray is drawn from the connection position of the first arm 4121 and the second arm 4122 along the extension direction of the second arm 4122, and the angle between the first ray and the second ray is an obtuse angle.

[0161] The clamp 411 is adjustably disposed on the first arm 4121 along the extension direction of the first arm 4121 , that is, the first direction mentioned above is the extension direction of the first arm 4121 .

[0162] The second arm 4122 is hinged to the connecting rod 420 , and the connecting arm 412 is hinged to the handle 100 at the connecting position of the first arm 4121 and the second arm 4122 .

[0163] By connecting the second arm 4122 to one end of the first arm 4121 and setting the first arm 4121 and the second arm 4122 at an obtuse angle, it is helpful to reduce the volume occupied by the connecting arm 412 in a direction perpendicular to the rotation axis of the connecting arm 412, which helps to reduce the volume of the screwdriver 10.

[0164] Please refer to Figure 8 , Fig. 9 and Fig.10 In some embodiments, a sliding groove 41211 is provided on the first arm 4121, and the sliding groove 41211 extends along the extension direction of the first arm 4121. A sliding protrusion 4113 is provided on the clamp 411, and the sliding protrusion 4113 slidably cooperates with the sliding groove 41211, so that the clamp 411 is adjustably arranged on the first arm 4121 along the extension direction of the first arm 4121.

[0165] Optionally, the sliding groove 41211 is a T-shaped groove, and the sliding protrusion 4113 is a T-shaped protrusion.

[0166] Please refer to Figure 8 , Fig. 9 and Fig.10In some embodiments, anti-slip protrusions 4112 are provided on two oppositely disposed side surfaces of the chuck 411 along the extension direction of the rotation axis of the connecting arm 412 to reduce the risk of the chuck 411 slipping when adjusting the relative position of the chuck 411 and the first arm 4121.

[0167] Please refer to Figure 8 , Fig. 9 and Fig.10 In some embodiments, the clamping jaw 410 includes a second locking mechanism 600, and the second locking mechanism 600 includes a second locking state and a second unlocking state. When the second locking mechanism 600 is in the second locking state, the second locking mechanism 600 locks the clamp 411 to the first arm 4121. When the second locking mechanism 600 is in the second unlocking state, the clamp 411 can move relative to the first arm 4121.

[0168] The second locking mechanism 600 is used to lock or unlock the collet 411 to restrict or allow the collet 411 to move relative to the first arm 4121. The second locking mechanism 600 is used to lock the collet 411 and the first arm 4121 when it is in the second locking state to restrict the collet 411 from moving relative to the first arm 4121. The second locking mechanism 600 is also used to unlock the collet 411 and the first arm 4121 when it is in the second unlocking state to allow the collet 411 to move relative to the first arm 4121.

[0169] The second locking mechanism 600 is provided to lock or unlock the chuck 411 to limit or allow the chuck 411 to move relative to the first arm 4121. When the relative position of the chuck 411 and the first arm 4121 needs to be adjusted, the second locking mechanism 600 can be placed in an unlocked state to allow the chuck 411 to move relative to the first arm 4121. After the adjustment is completed, the second locking mechanism 600 is placed in a locked state to lock the chuck 411 to the first arm 4121.

[0170] Optionally, the second locking mechanism 600 is a screw, which is threadedly connected to the first arm 4121. The screw is rotated in the forward direction so that the screw presses the clamp 411 against the first arm 4121, thereby putting the second locking mechanism 600 in the second locking state. The screw is rotated in the reverse direction so that the screw loosens the clamp 411 and the first arm 4121, thereby putting the second locking mechanism 600 in the second unlocking state.

[0171] Please refer to Figure 8 , Fig. 9 and Fig.10In some embodiments, the jaw 410 has a contact portion 4111 for contacting the screw, the minimum distance between the contact portion 4111 and the rotation axis of the jaw 410 is L1, and the distance between the rotation axis of the jaw 410 and the hinge axis of the jaw 410 and the connecting rod 420 is L2, satisfying: L1>L2.

[0172] The clamping jaw 410 can be regarded as a lever structure. L1 represents the minimum distance between the contact portion 4111 and the rotation axis of the clamping jaw 410, which is equivalent to the length of the resistance arm. L2 represents the distance between the rotation axis of the clamping jaw 410 and the hinge axis of the clamping jaw 410 and the connecting rod 420, which is equivalent to the length of the power arm. L1>L2, that is, the length of the resistance arm is greater than the length of the power arm.

[0173] According to the lever principle, when the length of the resistance arm is greater than the length of the power arm, distance can be saved, thereby facilitating the multiple clamping jaws 410 to quickly clamp the screws.

[0174] In other embodiments, L1<L2. According to the lever principle, when the length of the resistance arm is smaller than the length of the power arm, it can save effort and reduce the external force required to be applied manually when clamping the screw.

[0175] Please refer to Figure 8 , Fig. 9 and Fig.10 In some embodiments, the clamping jaw 410 has a contact portion 4111, and the contact portion 4111 includes a toothed structure for contacting the screw.

[0176] By providing a toothed structure on the contact portion 4111 of the clamping jaw 410 , it is convenient for the clamping jaw 410 to be inserted into the gap between the screw and the workpiece, thereby facilitating stable clamping of the screw.

[0177] Please refer to Fig.11 and Fig.12 , Fig.11 A schematic structural diagram of a screwdriver 10 (with the housing 110 and the end cap separated) provided in some embodiments of the present application. Fig.12 The schematic diagram of the structure of the housing 110 provided in some embodiments of the present application. In some embodiments, the handle 100 includes a housing 110 and a cover 120, the housing 110 has an opening, and the clamp mechanism 400 is disposed in the housing 110. The cover 120 is detachably connected to the housing 110 and closes the opening.

[0178] The housing 110 has a receiving space with at least one end open, and the clamping mechanism 400 is at least partially received in the receiving space. The cover 120 is detachably connected to the housing 110 and closes the opening. When the clamping mechanism 400 needs to be used, the cover 120 can be removed from the housing 110 to expose the clamping mechanism 400 and facilitate the clamping mechanism 400 to clamp the screw.

[0179] Please refer to Fig.11 In some embodiments, a portion of the clamp mechanism 400 is contained in the housing 110, and a portion thereof extends out of the housing 110. When the cover 120 covers the housing 110, the clamp mechanism 400 can be completely covered, and when the cover 120 is separated from the housing 110, the clamp mechanism 400 can be exposed.

[0180] Optionally, the housing 110 has two openings arranged opposite to each other, wherein the clamping mechanism 400 extends out of the housing 110 from one opening, and the knife bar 200 extends out of the housing 110 from the other opening. The cover 120 covers the opening from which the clamping mechanism 400 extends.

[0181] When the clamping mechanism 400 is not needed, the cover 120 covers the housing 110 and closes the opening to protect the clamping mechanism 400. When the clamping mechanism 400 is needed, the cover 120 can be removed from the housing 110 to expose the clamping mechanism 400, so that the clamping mechanism 400 can clamp the screw.

[0182] In some embodiments, the housing 110 and the cover 120 are plug-fitted.

[0183] A convex portion may be provided on one of the housing 110 and the cover 120, and a concave portion may be provided on the other of the housing 110 and the cover 120, and the convex portion and the concave portion may be plugged in and matched.

[0184] By disassembling and fitting the shell body 110 and the cover body 120 , it is convenient to quickly disassemble and assemble the cover body 120 .

[0185] Please refer to Figure 5 , Fig.11 and Fig.12 In some embodiments, the handle 100 includes a housing 110 and a mounting frame 130, the mounting frame 130 is disposed on the housing 110, and the knife bar 200 and the clamping mechanism 400 are both disposed on the mounting frame 130. The strength of the mounting frame 130 is higher than that of the housing 110.

[0186] The housing 110 has a receiving space, and the mounting frame 130 can be disposed inside the housing 110 or outside the housing 110, or can be partially located inside the housing 110 and partially located outside the housing 110. The knife bar 200 and the clamping mechanism 400 are both connected to the mounting frame 130.

[0187] The mounting frame 130 may be made of a material with relatively high strength, such as iron, steel, etc. The housing 110 may be made of a material with relatively low strength and light weight, such as plastic.

[0188] The housing 110 and the mounting frame 130 may be made of different materials, so that the strength of the mounting frame 130 is higher than that of the housing 110. In this way, the housing 110 may be made of a lighter material to reduce the weight of the screwdriver 10. In addition, the housing 110 may also be made of a material that fits the hand better, making the screwdriver 10 more comfortable to use. The strength of the mounting frame 130 is higher than that of the housing 110, so as to provide sufficient strength to mount the clamping mechanism 400 and the shank 200.

[0189] In some embodiments, the mounting frame 130 includes a body portion 134, a connecting portion 135 and a plurality of mounting portions 136, wherein the body portion 134 is a linear structure, a limiting groove 131 is provided on the body portion 134, and an end of the shank 200 away from the cutter head 300 is accommodated in the limiting groove 131. The mounting hole 132 and the first plug hole 133 are both provided in the body portion 134. The mounting portion 136 is connected to the body portion 134, and the plurality of mounting portions 136 are arranged along the circumference of the body portion 134, and a clamping jaw 410 is hinged to a mounting portion 136. The connecting portion 135 connects the plurality of mounting portions 136 to enhance the structural strength of the mounting frame 130.

[0190] Please refer to Figure 5 , Fig.11 and Fig.12 In some embodiments, a card slot 111 is disposed inside the housing 110 , and the mounting bracket 130 is mounted in the card slot 111 .

[0191] In some embodiments, the cutter head 300 is detachably connected to the cutter rod 200 .

[0192] The detachable connection refers to a connection method in which the connecting member and the connected member are not damaged after repeated assembly and disassembly, and the original connection quality can be guaranteed. For example, the cutter head 300 and the cutter bar 200 can be bolted, keyed, plugged, etc.

[0193] By making the cutter head 300 detachably connected to the cutter bar 200, on the one hand, when the cutter head 300 is damaged, it can be repaired by replacing the cutter head 300. On the other hand, different types of cutter heads 300 can be replaced to further improve the adaptability to disassembling different screws.

[0194] According to some embodiments of this application, please refer to Figures 1 to 12 .

[0195] The embodiment of the present application provides a screwdriver 10, which includes a handle 100, a shank 200, a cutter head 300 and a clamping mechanism 400. The shank 200 is connected to the handle 100, and the cutter head 300 is arranged at one end of the shank 200 away from the handle 100, and the cutter head 300 is used to cooperate with the screw. The clamping mechanism 400 is arranged on the handle 100, and the clamping mechanism 400 is used to clamp the screw. The screwdriver 10 is provided with a cutter head 300 and a clamping mechanism 400. For screws that are not stripped, the cutter head 300 can be used to cooperate with the screw to remove the screw. For screws that are stripped, the clamping mechanism 400 can be used to clamp the screw, and the stripped screw can be easily removed by turning the screwdriver 10. The screwdriver 10 has a good disassembly effect for both screws that are not stripped and screws that are stripped, which is conducive to improving the disassembly efficiency of the battery.

[0196] The shank 200 is rotatably connected to the handle 100, and the rotation axis of the shank 200 intersects with the axis of the shank 200. The shank 200 is configured to drive the clamping mechanism 400 to clamp the screw. The shank 200 is rotatably connected to the handle 100. When the shank 200 rotates relative to the handle 100, the shank 200 can drive the clamping mechanism 400 to clamp the screw. The shank 200 is the longest component in the screwdriver 10. By rotating the shank 200 relative to the handle 100, the effect of saving distance and effort can be achieved. That is, when the shank 200 is rotated to drive the clamping mechanism 400 to clamp the screw, although the shank 200 needs to rotate a large distance, it is relatively more labor-saving, so that the clamping force of the clamping mechanism 400 can be greater when clamping the screw, so that the screw can be clamped more firmly.

[0197] The clamp mechanism 400 includes a plurality of clamps 410, a plurality of connecting rods 420 and a moving member 430, wherein the plurality of clamps 410 are hinged to the handle 100, one end of each connecting rod 420 is hinged to a clamp 410, and the moving member 430 is movably arranged on the handle 100, and the moving member 430 is hinged to the other end of each connecting rod 420. The plurality of clamps 410 are arranged along the circumference of the moving member 430. The arbor 200 is configured to be able to drive the moving member 430 to move relative to the handle 100 so that the plurality of clamps 410 clamp screws. Each connecting rod 420 connects a clamp 410 and a moving member 430, and when the moving member 430 moves, the connecting rod 420 drives the plurality of clamps 410 to move closer to or away from each other to achieve the clamping or loosening of the screw. When the arbor 200 rotates relative to the handle 100, the arbor 200 can drive the moving member 430 to move relative to the handle 100, so that the plurality of clamps 410 clamp screws. The rotation of the knife bar 200 is converted into a clamping action of the clamping jaw 410 through the transmission of the moving member 430 and the connecting rod 420, which has a simple structure and low cost.

[0198] The end of the arbor 200 away from the cutter head 300 is provided with a guide surface 220, and the moving member 430 abuts against the guide surface 220. The guide surface 220 is configured to guide the moving member 430 to move relative to the handle 100 when the arbor 200 rotates relative to the handle 100. When the arbor 200 rotates relative to the handle 100, the moving member 430 abuts against different positions of the guide surface 220 to move relative to the housing 110 under the action of the guide surface 220. By guiding the moving member 430 to move through the guide surface 220, the transmission is stable and reliable, and the space occupancy is small, which is conducive to reducing the volume and weight of the screwdriver 10.

[0199] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A screwdriver, characterized in that: include: handle; A knife bar connected to the handle; A cutter head, arranged at an end of the cutter bar away from the handle, and the cutter head is used to cooperate with the screw; A clamping mechanism is arranged on the handle, and the clamping mechanism is used for clamping the screw.

2. The screwdriver according to claim 1, characterized in that: The knife bar is in driving connection with the clamping mechanism, and the knife bar is configured to be able to drive the clamping mechanism to clamp the screw.

3. The screwdriver according to claim 2, characterized in that: The knife rod is rotatably connected to the handle, and the rotation axis of the knife rod intersects with the axis of the knife rod.

4. The screwdriver according to claim 3, characterized in that: The rotation axis of the knife rod is perpendicular to the axis of the knife rod.

5. The screwdriver according to claim 3, characterized in that: The clamping mechanism comprises: A plurality of clamping jaws, hinged to the handle; A plurality of connecting rods, one end of each connecting rod being hinged to one of the clamping claws; A movable member is movably arranged on the handle, the movable member is hinged to the other end of each connecting rod, a plurality of clamping jaws are arranged along the circumference of the movable member, and the knife rod is configured to be able to drive the movable member to move relative to the handle so that the plurality of clamping jaws clamp the screws.

6. The screwdriver according to claim 5, characterized in that: The end of the knife rod away from the knife head is provided with a guide surface, the moving member abuts against the guide surface, and the guide surface is configured to guide the moving member to move relative to the handle when the knife rod rotates relative to the handle.

7. The screwdriver according to claim 6, characterized in that: The guide surface has a first end and a second end, and along the extension direction of the knife rod, the first end is farther away from the knife head than the second end; The distance between the guide surface and the rotation axis of the knife rod gradually increases from the first end to the second end.

8. The screwdriver according to claim 7, characterized in that: The guiding surface is an arc surface.

9. The screwdriver according to claim 5, characterized in that: The clamping jaw mechanism further comprises a first elastic element, which is arranged between the handle and the moving member, and the first elastic element is used to reset the moving member so that the plurality of clamping jaws loosen the screws.

10. The screwdriver according to claim 3, characterized in that: The handle is provided with a limiting structure, and the limiting structure is used to limit the rotation angle of the knife rod.

11. The screwdriver according to claim 10, characterized in that: The limiting structure includes a limiting groove, and the end of the tool rod away from the tool head is accommodated in the limiting groove. The limiting groove includes a first groove wall surface and a second groove wall surface. The first groove wall surface and the second groove wall surface are used to abut against the tool rod to limit the rotation angle of the tool rod.

12. The screwdriver according to claim 11, characterized in that: The limiting groove also includes a third groove wall surface and a fourth groove wall surface arranged opposite to each other, the first groove wall surface connects the third groove wall surface and the fourth groove wall surface, the second groove wall surface connects the third groove wall surface and the fourth groove wall surface, and the third groove wall surface and the fourth groove wall surface are configured to limit the movement of the tool rod along the rotation axis of the tool rod.

13. The screwdriver according to claim 3, characterized in that: The screwdriver includes a first locking mechanism, which has a first locking state and a first unlocking state. When the first locking mechanism is in the first locking state, the first locking mechanism limits the rotation of the knife bar relative to the handle. When the first locking mechanism is in the first locking state, the knife bar can rotate relative to the handle.

14. The screwdriver according to claim 13, characterized in that: The first locking mechanism includes a latch, the handle is provided with a first insertion hole, and the knife rod is provided with a second insertion hole. When the latch is inserted into the first insertion hole and the second insertion hole, the first locking mechanism is in the first locking state.

15. The screwdriver according to claim 14, characterized in that: The handle is provided with a third plug hole, and the axis of the first plug hole intersects with the axis of the third plug hole; The first locking mechanism includes a second elastic element and a limiting body, the second elastic element is arranged between the limiting body and the latch, and the second elastic element is configured to drive the limiting body to be inserted into the third insertion hole.

16. The screwdriver according to claim 1, characterized in that: The clamping mechanism comprises: A plurality of clamping jaws, hinged to the handle; A plurality of connecting rods, one end of each connecting rod being hinged to one of the clamping claws; A movable member is movably arranged on the handle, the movable member is hinged to the other end of each connecting rod, a plurality of clamping claws are arranged along the circumference of the movable member, and the movable member is configured to be movable relative to the handle so that the plurality of clamping claws clamp or loosen the screws.

17. The screwdriver according to claim 16, characterized in that: The clamping jaw mechanism comprises at least three clamping jaws.

18. The screwdriver according to claim 16, characterized in that: The clamping jaws include: A chuck having a contact portion, wherein the contact portion is used to contact the screw; A connecting arm is hinged to the handle, the connecting arm is hinged to one end of the connecting rod, and the chuck is adjustably arranged on the connecting arm along a first direction, and the first direction intersects with the rotation axis of the connecting arm.

19. The screwdriver according to claim 18, characterized in that: The connecting arm includes a first arm and a second arm, the second arm is connected to one end of the first arm, the second arm and the first arm are set at an obtuse angle, the chuck is adjustably set on the first arm along the extension direction of the first arm, the second arm is hinged to the connecting rod at one end away from the first arm, and the connecting arm is hinged to the handle at the connection position between the first arm and the second arm.

20. The screwdriver according to claim 19, characterized in that: The clamping jaw includes a second locking mechanism, which includes a second locked state and a second unlocked state. When the second locking mechanism is in the second locked state, the second locking mechanism locks the clamp to the first arm. When the second locking mechanism is in the second unlocked state, the clamp can move relative to the first arm.

21. The screwdriver according to claim 16, characterized in that: The clamp has a contact portion for contacting the screw, the minimum distance between the contact portion and the rotation axis of the clamp is L1, and the distance between the rotation axis of the clamp and the hinge axis of the clamp and the connecting rod is L2, satisfying: L1>L2.

22. The screwdriver according to claim 16, characterized in that: The clamping jaw has a contact portion including a toothed structure for contacting the screw.

23. The screwdriver according to any one of claims 1 to 22, characterized in that: The handle comprises a shell and a cover, the shell has an opening, the clamp mechanism is arranged in the shell, and the cover is detachably connected to the shell and closes the opening.

24. The screwdriver according to claim 23, characterized in that: The shell body and the cover body are plug-fitted.

25. The screwdriver according to any one of claims 1 to 22, characterized in that: The handle comprises a shell and a mounting frame, wherein the mounting frame is arranged on the shell, the knife bar and the clamping jaw mechanism are both arranged on the mounting frame, and the strength of the mounting frame is higher than the strength of the shell.

26. The screwdriver according to any one of claims 1 to 22, characterized in that: The cutter head is detachably connected to the cutter rod.

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