Screwdriver

Abstract

The invention provides a screwdriver which comprises a screwdriver rod, a screwdriver head mounting part, a screwdriver head and a screwdriver head, the sliding sleeve comprises a sleeve section and a clamping section, the sleeve section is slidably arranged on the periphery of the cutter bar in a sleeving mode, the clamping section comprises a plurality of clamping jaws which are sequentially arranged in the circumferential direction of the sleeve section, the ends of the multiple clamping jaws are connected with the end, close to the cutter head mounting part, of the sleeve section, and the cutter head mounting part is located in the multiple clamping jaws; the clamping section has a clamping state in which the multiple clamping jaws are close to each other and a separating state in which the multiple clamping jaws are far away from each other; wherein the clamping section is made of an elastic material, and each clamping jaw is provided with a magnetic attraction piece, so that every two adjacent clamping jaws can be close to each other. According to the technical scheme provided by the invention, the problem that in the related technology, a dismounting screw falls off can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tools, in particular to a screwdriver. Background Art

[0002] Screws are important fasteners in the mechanical industry and are widely used in various equipment and structures to connect and fix different parts. Screws come in different shapes and sizes and can be selected according to different uses. Screwdrivers are common tools used to tighten or loosen screws, which are installed or removed through rotational force.

[0003] In the daily maintenance and inspection of the AC and DC power panels of the substation, it is often encountered that some functional modules in the panel cabinet are damaged and need to be replaced or removed and returned to the factory for repair. However, the panel cabinet is energized and the space is small. Under the premise of ensuring the safety of equipment and personal safety, especially for some older equipment, the reserved disassembly space is insufficient or installed on the side of the panel cabinet, allowing only a screwdriver to enter and cannot be used by hand to loosen the screws. Due to the insufficient magnetic attraction of the screwdrivers on the market and the uncontrollable shaking of the human body, screws often fall into the panel cabinet. In addition, the internal devices of the panel cabinet are complex, especially some energized busbars, terminals, and ventilation and heat dissipation shells that are connected to the outside of important equipment. The falling of the disassembled screws may cause these equipment to short-circuit or fail, which brings great hidden dangers to the equipment and the power grid, so it brings great safety pressure and difficulties to the installation and disassembly of modules. Summary of the invention

[0004] The invention provides a screwdriver to solve the problem of screws falling off during disassembly in the related art.

[0005] The present invention provides a screwdriver, which comprises: a tool rod, a tool head mounting portion is arranged at the end of the tool rod; a sliding sleeve, comprising a sleeve section and a clamping section, the sleeve section is slidably sleeved on the outer periphery of the tool rod, the clamping section comprises a plurality of clamping jaws arranged in sequence along the circumference of the sleeve section, the ends of the plurality of clamping jaws are all connected to one end of the sleeve section close to the tool head mounting portion, the tool head mounting portion is located in the plurality of clamping jaws, the clamping section has a clamping state in which the plurality of clamping jaws are close to each other and a separation state in which the plurality of clamping jaws are far away from each other; wherein the clamping section is made of elastic material, and each clamping jaw is provided with a magnetic attraction component so that two adjacent clamping jaws can be close to each other.

[0006] Furthermore, a clamping block is provided on the inner wall of the clamping jaw, and the clamping block is located above the corresponding magnetic suction part. When the clamping section is in the clamping state, multiple clamping blocks are located below the cutter head mounting part, and multiple clamping blocks and the cutter head mounting part together form a clamping groove.

[0007] Furthermore, the clamping section also includes an outward expansion section connected to the clamping jaw, the clamping jaw is connected to the sleeve section, the outward expansion section extends in a direction away from the knife rod, the clamping block is arranged on the inner side wall of the clamping jaw, and the magnetic attraction part is arranged on the outward expansion section.

[0008] Furthermore, a first spring is sleeved on the outer periphery of the knife rod, and the first spring is located between the knife rod and the sleeve section, and two ends of the first spring are respectively in contact with the outer wall of the knife rod and the inner wall of the sleeve section.

[0009] Furthermore, a limiting cylinder is provided on the outer wall of the tool rod, and a limiting groove is provided on one of the outer wall of the limiting cylinder and the inner wall of the sleeve section, the limiting groove extends along the axial direction of the tool rod, and a limiting protrusion is provided on the other of the outer wall of the limiting cylinder and the inner wall of the sleeve section, and the limiting protrusion can be slidably located in the limiting groove.

[0010] Furthermore, the screwdriver also includes a handle, which is located at an end of the tool rod away from the tool head mounting portion, and the tool rod is insertable into the handle in an adjustable manner.

[0011] Furthermore, the screwdriver also includes a limit plate, a mounting cavity and a mounting opening connected to the mounting cavity are provided on the handle, the limit plate extends into the mounting cavity through the mounting opening and is hinged to the handle, a positioning protrusion is provided on the limit plate, and the shank has a plurality of positioning grooves arranged at intervals along its axial direction, and the positioning protrusion can be inserted into one of the positioning grooves.

[0012] Furthermore, the screwdriver also includes a second spring, which is located on the side of the limit plate away from the positioning groove. The limit plate is also provided with a mounting rod, and the second spring is sleeved on the mounting rod. The two ends of the second spring are respectively abutted against the limit plate and the cavity wall of the mounting cavity.

[0013] Furthermore, a limit ring is provided on the outer periphery of the knife rod, and the limit ring is located below the sleeve section and can cooperate with the sleeve section in a limiting manner.

[0014] Furthermore, the clamping section also includes a connecting section, a plurality of clamping claws are connected to the connecting section, the connecting section is connected to the sleeve section, the connecting section is penetrated by a reinforcement ring, and the reinforcement ring extends in a horizontal direction.

[0015] By applying the technical solution of the present invention, the screwdriver includes a tool rod and a sliding sleeve. The sliding sleeve is slid to expose the tool head mounting portion, and the tool head is installed on the tool rod through the tool head mounting portion on the tool rod, so that the clamping section undergoes elastic deformation and switches from a clamping state in which a plurality of jaws are close to each other to a separated state in which a plurality of jaws are far from each other. The tool head is matched with the screw, and the tool rod is rotated to drive the screw to rotate, and the screw is removed from the component in the screen cabinet. During this process, two adjacent jaws gradually approach each other under the magnetic attraction of the magnetic attraction component, and clamp the head of the screw to prevent the screw and the tool head from loosening and falling off, so that the screw can be safely removed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of a screwdriver provided in an embodiment of the present invention is shown;

[0018] Figure 2 A cross-sectional view of a sleeve section of a screwdriver provided according to an embodiment of the present invention is shown;

[0019] Figure 3 for Figure 2 A local enlarged view of point A in FIG.

[0020] Figure 4 An exploded view of a shank and a sleeve of a screwdriver provided according to an embodiment of the present invention is shown;

[0021] Figure 5 A schematic structural diagram of multiple clamping jaws of a screwdriver provided in an embodiment of the present invention is shown;

[0022] Figure 6 A distribution diagram of magnetic suction components of a screwdriver provided according to an embodiment of the present invention is shown;

[0023] Figure 7 Another structural schematic diagram of a screwdriver provided according to an embodiment of the present invention is shown;

[0024] Figure 8 An installation diagram of a handle and a shank of a screwdriver provided according to an embodiment of the present invention is shown;

[0025] Fig. 9 A cross-sectional view of a screwdriver handle provided according to an embodiment of the present invention is shown;

[0026] Fig.10 A schematic structural diagram of a limit plate of a screwdriver provided in an embodiment of the present invention is shown;

[0027] Fig.11 A diagram showing the use process of a screwdriver provided according to an embodiment of the present invention is shown.

[0028] The above drawings include the following reference numerals:

[0029] 1. Knife handle; 2. Knife rod; 3. Knife head mounting part; 4. Limiting cylinder; 5. Sleeve section; 6. First spring; 7. Clamping section; 8. Magnetic attraction piece; 9. Limiting ring; 10. Block; 11. Outward expansion section; 12. Reinforcement ring; 13. Limiting protrusion; 14. Limiting plate; 15. Positioning protrusion; 16. Mounting rod; 17. Second spring; 18. Mounting plate; 19. Rotating shaft; 20. Mounting cavity; 21. Mounting groove; 22. Positioning groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 11 As shown, an embodiment of the present invention provides a screwdriver, which includes a shank 2 and a sleeve. A bit mounting portion 3 is provided at the end of the shank 2; the sleeve includes a sleeve section 5 and a clamping section 7, the sleeve section 5 is slidably mounted on the outer periphery of the shank 2, the clamping section 7 includes a plurality of jaws arranged in sequence along the circumference of the sleeve section 5, the ends of the plurality of jaws are connected to one end of the sleeve section 5 close to the bit mounting portion 3, the bit mounting portion 3 is located in the plurality of jaws, the clamping section 7 has a clamping state in which the plurality of jaws are close to each other and a separation state in which the plurality of jaws are far away from each other; wherein the clamping section 7 is made of elastic material, and each jaw is provided with a magnetic attraction component 8 so that two adjacent jaws can be close to each other.

[0032] By applying the technical solution of the present invention, the screwdriver includes a tool bar 2 and a sliding sleeve. The sliding sleeve is slid to expose the tool head mounting portion 3, and the tool head is installed on the tool bar 2 through the tool head mounting portion 3 on the tool bar 2, so that the clamping section 7 undergoes elastic deformation and switches from a clamping state in which a plurality of jaws are close to each other to a separated state in which a plurality of jaws are far from each other. The tool head is matched with the screw, and the tool bar 2 is rotated to drive the screw to rotate, and the screw is removed from the components in the screen cabinet. During this process, two adjacent jaws gradually approach under the magnetic attraction of the magnetic attraction component, and clamp the head of the screw to prevent the screw and the tool head from loosening and falling off, so that the screw can be safely removed.

[0033] In this embodiment, after the cutter head is installed, the cutter head is located in the plurality of clamping jaws. When removing the screw, the plurality of clamping jaws are elastically deformed and abut against the outer periphery of the screw without contacting the screw. After the screw is removed, the plurality of clamping jaws approach each other under the action of the magnetic attraction member 8 and clamp the head of the screw.

[0034] Specifically, the magnetic attraction member 8 is made of magnetic materials such as iron, cobalt, and nickel.

[0035] In this embodiment, the adjacent sides of two adjacent magnetic elements 8 have different magnetic properties, and the clamping section 7 is made of rubber material.

[0036] By setting the polarities of the adjacent sides of two adjacent magnetic attracting members 8 to be different, the principle of opposites attracting each other can be utilized, and the ends of two adjacent clamping jaws can be pulled close to each other by magnetic force, thereby achieving the contraction between the ends of multiple clamping jaws, thereby clamping the countersunk head of the screw, and the clamping section 7 is set to be a rubber material. Since the rubber material itself has a high degree of flexibility and can be elastically deformed when subjected to external force, the clamping section 7 can adaptively adjust the clamping force according to the size and shape of the screw head during the process of clamping and loosening the screw, ensuring that the screw can be firmly clamped in the case of different sizes and shapes, thereby improving the practicality of the device;

[0037] Rubber is an electrical insulator and can effectively block electric current. Therefore, when the screwdriver contacts a live device, the rubber clamping section 7 can play an insulating and protective role to prevent the operator from receiving electric shock due to accidental contact with live parts during operation. The rubber material can also effectively prevent static electricity accumulation. Static electricity may cause damage to electronic components during the maintenance of electronic equipment, and the rubber clamping section 7 can reduce the generation and accumulation of static electricity, further ensuring the safety of the operating environment.

[0038] like Figure 3 and Fig.11 As shown, the inner wall of the clamping jaw is also provided with a clamping block 10, which is located above the corresponding magnetic attraction member. When the clamping section 7 is in the clamping state, a plurality of clamping blocks 10 are located below the cutter head mounting portion 3, and a plurality of clamping blocks 10 and the cutter head mounting portion 3 together form a clamping groove. The clamping block 10 can be used to limit the head of the screw to prevent the screw from falling.

[0039] In this embodiment, the clamping block 10 and the magnetic component 8 are at the same height. By installing the clamping block 10 on the inner bottom of the clamping jaw, which is set on the same horizontal plane as the magnetic component 8, when clamping the screw, it can provide the clamping jaw with additional positioning and fixing functions, helping the clamping jaw to maintain a stable shape when clamping the screw, and avoiding the displacement of the clamping jaw due to uneven force. At the same time, the cooperation between the clamping block 10 and the magnetic component 8 further fixes the screw head through magnetic force, so that the screw will not be separated from the clamping section 7 due to vibration or gravity during the disassembly process.

[0040] like Figure 4As shown, the clamping section 7 also includes an expansion section 11 connected to the clamping jaws, the clamping jaws are connected to the sleeve section 5, the expansion section 11 extends in a direction away from the shank 2, the clamping block 10 is arranged on the inner side wall of the clamping jaws, and the magnetic attraction member 8 is arranged on the expansion section 11. With the above structure, the combination of the clamping jaws and the expansion section 11 forms an "R"-shaped cross section, thereby enhancing the strength and stability of the clamping jaws. The "R"-shaped structure can effectively disperse stress when subjected to force, so that the clamping jaws will not generate excessive local stress when contacting the screws, reducing the risk of the clamping jaws breaking or deforming. In addition, the "R"-shaped structure makes the opening diameter of the end of the clamping jaws larger, so it is beneficial for the countersunk head of the screw to enter between multiple clamping jaws.

[0041] In this embodiment, the magnetic attraction member 8 is a bar magnet, which is mounted on the outer expansion section 11 , with both ends of the bar magnet exposed outside the outer expansion section 11 .

[0042] like Figure 4 As shown, the outer periphery of the knife bar 2 is also sleeved with a first spring 6, which is located between the knife bar 2 and the sleeve section 5, and the two ends of the first spring 6 are respectively in contact with the outer wall of the knife bar 2 and the inner wall of the sleeve section 5. By arranging the first spring 6 on the knife bar 2, and the spring is inside the sleeve section 5, when the sleeve section 5 moves toward the knife handle 1, the sleeve section 5 will compress the first spring 6, and then after the cutter head is installed on the cutter head installation part 3, the sleeve section 5 is released, and the sleeve section 5 can be squeezed by the elastic force of the first spring 6, so that the sleeve section 5 can be reset.

[0043] In this embodiment, the sleeve segment 5 has an inwardly turned annular flange, which can abut against the first spring 6 to compress the first spring 6 .

[0044] like Figure 4 As shown, the outer wall of the shank 2 is provided with a limiting cylinder 4, one of the outer wall of the limiting cylinder 4 and the inner wall of the sleeve section 5 is provided with a limiting slot, the limiting slot extends along the axial direction of the shank 2, and the other of the outer wall of the limiting cylinder 4 and the inner wall of the sleeve section 5 is provided with a limiting protrusion 13, and the limiting protrusion 13 is slidably located in the limiting slot. Through the cooperation between the limiting protrusion 13 and the limiting slot, the sleeve section 5 can be auxiliary supported, and the cross-sections of the limiting slot and the limiting protrusion 13 are both T-shaped, so the limiting protrusion 13 and the limiting slot will be engaged with each other, thereby preventing the sleeve section 5 and the limiting cylinder 4 from being separated.

[0045] like Figure 8 and Fig. 9 As shown, the screwdriver further comprises a handle 1, which is located at one end of the shank 2 away from the bit mounting portion 3, and the shank 2 is adjustably inserted into the handle 1. With the above structure, by adjusting the relative position of the shank 2 and the handle 1, the length of the screwdriver can be adjusted to adapt to different working scenarios.

[0046] like Fig. 9 and Fig.10 As shown, the screwdriver further includes a limit plate 14, a mounting cavity 20 and a mounting opening communicating with the mounting cavity 20 are provided on the handle 1, the limit plate 14 extends into the mounting cavity 20 through the mounting opening and is hinged to the handle 1, a positioning protrusion 15 is provided on the limit plate 14, and a plurality of positioning grooves 22 are provided on the arbor 2 along its axial direction, and the positioning protrusion 15 can be inserted into one of the positioning grooves 22. By pressing the limit plate 14, the position adjustment of the arbor 2 can be controlled. When the limit plate 14 is pressed, the positioning protrusion 15 can move in the mounting cavity 20, at which time, the positioning protrusion 15 is separated from the positioning groove 22, and the arbor 2 can move relative to the handle 1. After the limit plate 14 is loosened, the positioning protrusion 15 can be located in the corresponding positioning groove 22.

[0047] In this embodiment, a mounting plate 18 is fixedly connected to one side of the inner bottom of the handle 1 , and the mounting plate 18 is located in the mounting cavity 20 . A rotating shaft 19 is fixedly connected to the middle of the limiting plate 14 , and the rotating shaft 19 is rotatably connected to the bottom of the mounting plate 18 .

[0048] like Fig.10 As shown, the screwdriver further includes a second spring 17, which is located on a side of the limit plate 14 away from the positioning groove 22. The limit plate 14 is also provided with a mounting rod 16, on which the second spring 17 is sleeved, and the two ends of the second spring 17 are respectively in contact with the limit plate 14 and the cavity wall of the mounting cavity 20. The second spring 17 can provide a restoring force, and after the limit plate 14 is loosened, the limit plate 14 can rotate relative to the handle 1 under the action of the restoring force, and the positioning protrusion 15 is located in the corresponding positioning groove 22.

[0049] A mounting groove 21 is provided on the handle 1 , and the second spring 17 is inserted into the mounting groove 21 .

[0050] like Figure 4 As shown, a limit ring 9 is also provided on the outer periphery of the shank 2, and the limit ring 9 is located below the sleeve section 5 and can cooperate with the sleeve section 5. The limit ring 9 can limit the position where the sleeve section 5 slides down to prevent the sleeve section 5 from falling off.

[0051] like Figure 3As shown, the clamping section 7 also includes a connecting section, a plurality of clamping jaws are connected to the connecting section, the connecting section is connected to the sleeve section 5, and the connecting section is penetrated by a reinforcement ring 12, which extends in the horizontal direction. By setting the reinforcement ring 12 at the inner top of the clamping section 7, additional support can be provided for the clamping jaws, and the clamping jaws are flexible rubber structures, which will deform during operation. When the clamping jaws encounter a screw, the clamping jaws will expand outwards due to the entry of the countersunk head of the screw. If there is no reinforcement ring 12, the clamping jaws may lose elasticity or be damaged due to repeated deformation during long-term use. Therefore, the reinforcement ring 12 can be used to provide additional strength support to ensure that the clamping jaws can still maintain good deformation performance after multiple operations and extend their service life.

[0052] The specific working principle of the screwdriver provided in this embodiment is that when using it, the blade to be used is first rotated into the blade installation part 3, and the user can apply force by holding the handle 1, and the handle 1 is internally installed with a blade rod 2, and the end of the blade rod 2 is connected to the blade installation part 3. The blade is used for installation and assembly and actually contacts with the screw, and transmits the rotational force to perform the screw disassembly and assembly operation. Therefore, the user can drive the blade installation part 3 to rotate by rotating the handle 1, so as to achieve the purpose of tightening or loosening the screw, and the outer wall of the blade rod 2 is close to one side of the blade installation part 3 A limiting cylinder 4 is installed, and the limiting cylinder 4 can be used to provide support for the sleeve section 5. A cutter head mounting portion 3 is provided at the bottom of the tool rod 2, and during use, the movement of the clamping section 7 can be driven by pressing or pulling the sleeve section 5. When the sleeve section 5 slides in a direction away from the cutter head mounting portion 3, the deformable clamping section 7 will be driven to move together, so that the cutter head mounting portion 3 is exposed. At this time, the cutter head can be installed, and when the sleeve section 5 slides in a direction close to the cutter head mounting portion 3, the deformable clamping section 7 will be driven to move together so that the clamping section 7 covers the cutter head mounting portion 3 and the cutter head.

[0053] In actual operation, the user moves the knife bar 2, the knife head mounting part 3 and the knife head by holding the knife handle 1, and the knife head can be inserted into the countersunk head of the screw. At this time, the countersunk head of the screw can open the ends of multiple clamping claws, and then the knife handle 1 is turned to drive the knife bar 2 and the knife head to rotate, thereby driving the screw to rotate and screw out the screw. Since the clamping section 7 is flexible and deformable, and a magnetic attraction part 8 is also installed on the inner bottom, when the countersunk head of the screw is screwed out, the knife head mounting part 3 and the clamping section 7 will be away from the mounting part fixed by the screw, and the diameter of the countersunk head of the screw is larger than the diameter of the middle part of the screw, so at this time the clamping The claws will be retracted and the ends will be close to each other. After they are retracted, the magnetic force of the magnetic suction part 8 can be used to further attract and pull the ends of the clamping claws to further retract them, so that the countersunk head of the screw can be wrapped and clamped, thereby preventing the screw from falling off. At the same time, the deformation of the clamping section 7 enables it to adapt to the operation of screws of different types and sizes, and the magnetic suction part 8 can directly absorb the screws while retracting the ends of the clamping claws. Therefore, a double fixed protection effect can be formed during operation, ensuring that the screw disassembly and assembly work can be completed safely and efficiently even in complex or adverse environments.

[0054] The present invention provides a sleeve screwdriver for removing screws and preventing the screws from falling off. The invention has the following beneficial effects:

[0055] 1. By utilizing the mutual attraction between multiple magnetic parts, multiple jaws can be pulled to deform, so that the ends of the multiple jaws are retracted and close to each other, and the magnetic parts themselves can also adsorb the screws, thereby preventing the screws from falling off the cutter head on the sleeve.

[0056] 2. By pressing the limit plate 14, the positioning protrusion 15 can be driven to move and move it out of the positioning groove 22 on the knife rod 2, and the second spring 17 can also be squeezed at this time, and then the knife rod 2 can be pulled to slide in the knife handle 1 by pulling out the knife rod 2. After loosening the limit plate 14, the second spring 17 can push out the positioning protrusion 15 and make it re-slotted into the positioning groove 22, so as to fix the position of the knife rod 2 in the knife handle 1. In this way, the length of the device can be adjusted, and the screws located deeper in the equipment can be removed, thereby improving the practicality of the device.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] In the description of the present invention, it is necessary to understand that the orientation or state relationship indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or state relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial state relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A screwdriver, characterized in that: The screwdriver comprises: A knife rod (2), wherein a knife head mounting portion (3) is provided at the end of the knife rod (2); The sliding sleeve comprises a sleeve section (5) and a clamping section (7), wherein the sleeve section (5) is slidably sleeved on the outer circumference of the tool rod (2), and the clamping section (7) comprises a plurality of clamping jaws arranged in sequence along the circumference of the sleeve section (5), and the ends of the plurality of clamping jaws are connected to one end of the sleeve section (5) close to the tool head mounting portion (3), and the tool head mounting portion (3) is located inside the plurality of clamping jaws, and the clamping section (7) has a clamping state in which the plurality of clamping jaws are close to each other and a separated state in which the plurality of clamping jaws are far away from each other; The clamping section (7) is made of elastic material, and each of the clamping jaws is provided with a magnetic attraction component (8) so that two adjacent clamping jaws can be close to each other.

2. The screwdriver according to claim 1, characterized in that: The inner wall of the clamping jaw is also provided with a clamping block (10), and the clamping block (10) is located above the corresponding magnetic attraction member (8). When the clamping section (7) is in the clamping state, a plurality of the clamping blocks (10) are located below the tool head mounting portion (3), and the plurality of the clamping blocks (10) and the tool head mounting portion (3) together form a clamping groove.

3. The screwdriver according to claim 2, characterized in that: The clamping section (7) also includes an outward expansion section (11) connected to the clamping jaw, the clamping jaw is connected to the sleeve section (5), the outward expansion section (11) extends in a direction away from the knife rod (2), the clamping block (10) is arranged on the inner side wall of the clamping jaw, and the magnetic attraction member (8) is arranged on the outward expansion section (11).

4. The screwdriver according to claim 1, characterized in that: A first spring (6) is also sleeved on the outer periphery of the knife rod (2), and the first spring (6) is located between the knife rod (2) and the sleeve section (5), and the two ends of the first spring (6) are respectively in contact with the outer wall of the knife rod (2) and the inner wall of the sleeve section (5).

5. The screwdriver according to claim 1, characterized in that: The outer wall of the knife rod (2) is provided with a limiting cylinder (4), and one of the outer wall of the limiting cylinder (4) and the inner wall of the sleeve section (5) is provided with a limiting groove, and the limiting groove extends along the axial direction of the knife rod (2), and the other of the outer wall of the limiting cylinder (4) and the inner wall of the sleeve section (5) is provided with a limiting protrusion (13), and the limiting protrusion (13) can be slidably located in the limiting groove.

6. The screwdriver according to claim 1, characterized in that: The screwdriver further comprises a handle (1), wherein the handle (1) is located at an end of the shank (2) away from the bit mounting portion (3), and the shank (2) is inserted into the handle (1) in an adjustable manner.

7. The screwdriver according to claim 6, characterized in that The screwdriver further comprises a limit plate (14), the handle (1) is provided with a mounting cavity (20) and a mounting opening connected to the mounting cavity (20), the limit plate (14) extends into the mounting cavity (20) through the mounting opening and is hinged to the handle (1), the limit plate (14) is provided with a positioning protrusion (15), the shank (2) has a plurality of positioning grooves (22) arranged at intervals along its axial direction, and the positioning protrusion (15) can be inserted into one of the positioning grooves (22).

8. The screwdriver according to claim 7, characterized in that: The screwdriver further comprises a second spring (17), wherein the second spring (17) is located on a side of the limit plate (14) away from the positioning groove (22), and a mounting rod (16) is further provided on the limit plate (14), and the second spring (17) is sleeved on the mounting rod (16), and the two ends of the second spring (17) are respectively in contact with the limit plate (14) and the cavity wall of the mounting cavity (20).

9. The screwdriver according to claim 1, characterized in that: A limiting ring (9) is also provided on the outer periphery of the knife rod (2); the limiting ring (9) is located below the sleeve section (5) and can cooperate with the sleeve section (5) in a limiting manner.

10. The screwdriver according to claim 1, characterized in that The clamping section (7) also includes a connecting section, a plurality of the clamping jaws are connected to the connecting section, the connecting section is connected to the sleeve section (5), and the connecting section is penetrated by a reinforcement ring (12), and the reinforcement ring (12) extends in a horizontal direction.

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