A screwdriver accessory and screwdriver
Patent Information
- Application Number
- CN202522304766.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-10-30
AI Technical Summary
然而，磁性吸附虽然可以保持螺丝的位置，但无法有效控制螺丝的旋转方向，磁性螺丝刀在拧紧过程中，螺丝仍可能发生偏转或倾斜，使螺丝刀无法充分发力，进而影响安装精度和操作效率
[0021]本实用新型提供了一种螺丝刀辅件及螺丝刀，通过导向套、导向连接部及固定夹持部的协同配合，实现螺丝在旋紧过程中的方向限位与位置保持。导向套可套设于螺丝刀刀杆上，用于保持辅件与刀头的同轴定位，使整体与刀杆方向一致；导向连接部为刚性结构，固定连接于导向套外周并沿轴向延伸，形成稳定的延伸支撑，防止螺丝在旋紧过程中偏摆或抖动；导向套与固定夹持部之间的间隔空间构成可视部，便于操作者观察螺丝位置及旋紧状态，提高操作直观性；固定夹持部设置于导向连接部远端，用于夹持并限位螺丝，使螺丝在旋紧初期保持与刀头贴合且方向固定。导向连接部的长度用于确定固定夹持部与刀头之间的相对位置。当导向套套设于刀杆靠近刀头的一端时，固定夹持部恰好位于螺丝头部与刀头的对接位置。由于导向连接部为刚性且长度恒定，当导向套定位后，固定夹持部不会发生偏移，使螺丝头与刀头间的距离始终保持一致，避免松动或错位。该螺丝刀辅件及螺丝刀整体结构简单、轻便，安装与操作方便，不影响螺丝刀常规使用功能，具有良好的实用性、通用性及便携性。
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Figure CN224826343U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screwdriver technology, and in particular to a screwdriver accessory and a screwdriver. Background Technology
[0002] When tightening screws with a screwdriver, if the manual operation is not steady enough or the screw surface is smooth and the thread is fine, the screw is easy to come off the screwdriver tip or slip, and may tilt or lean. This problem is particularly prominent when the screw size is small or the working space is limited.
[0003] To prevent screws from falling out, a common improvement method is to magnetically treat the screwdriver tip, allowing the screw to adhere to the tip and thus securing it to some extent. However, while magnetic attraction can maintain the screw's position, it cannot effectively control its rotation direction. During tightening, the screw may still deflect or tilt, preventing the screwdriver from applying sufficient force and consequently affecting installation accuracy and operational efficiency. Utility Model Content
[0004] The purpose of this invention is to solve or at least alleviate some or all of the aforementioned problems. The purpose of this invention is to provide a screwdriver accessory and screwdriver that can maintain a stable relative position between the screw and the screwdriver tip during tightening, prevent the screw from detaching from the screwdriver tip and prevent the screw from deviating in direction, ensure accurate force application, and is simple in structure, easy to operate, convenient to store, carry, and reuse.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A screwdriver accessory, comprising:
[0007] Guide sleeve, used to be fitted onto the shank of a screwdriver;
[0008] The guide connection is a rigid structure, one end of which is fixedly connected to the outer periphery of the guide sleeve and extends along the axial direction of the guide sleeve;
[0009] A fixing clamping part is connected to the end of the guide connecting part away from the guide sleeve and is disposed opposite to the guide sleeve, for clamping and limiting the screw;
[0010] A visible section for observing the fit between the tool holder and the screw.
[0011] In some alternative embodiments, the fixing clamping part includes a clamping plate arranged perpendicular to the axial direction of the guide sleeve, one end of which is connected to the guide connecting part. The clamping plate has a groove that extends through the thickness direction of the clamping plate. The groove has an opening located at one end of the clamping plate.
[0012] In some alternative embodiments, the clamping plate is provided with an anti-slip pad on the side facing the guide sleeve.
[0013] In some alternative embodiments, the guide connection portion is a connecting plate, the connecting plate connects the guide sleeve and the fixing clamping portion, the guide sleeve and the fixing clamping portion are spaced apart, and the space between the guide sleeve and the fixing clamping portion constitutes the visible portion.
[0014] In some alternative embodiments, the connecting plate is arranged axially along the guide sleeve, its thickness direction is consistent with the radial direction of the guide sleeve, and it extends outward along the radial direction.
[0015] A screwdriver includes a screwdriver accessory, a shank, a blade, and a handle as described in any of the above claims. The handle, the shank, and the blade are sequentially fixedly connected. A guide sleeve is detachably connected to the shank and is capable of sliding along the axial direction of the shank.
[0016] In some alternative embodiments, the guide sleeve can be fixed to one end of the cutter bar near the cutter head.
[0017] In some alternative embodiments, the guide sleeve is an annular hollow structure with an opening along the axial direction of the guide sleeve. The tool bar has at least a partial diameter-changing section in which the diameter gradually increases along its axial direction from away from the tool head to closer to the tool head, so that the guide sleeve forms a conical interference fit with the tool bar near the tool head, while allowing the guide sleeve to slide along the axial direction of the tool bar in positions other than near the tool head.
[0018] In some alternative embodiments, the guide sleeve has a limiting hole, and the tool bar is provided with a spring-pressing limiting ball in its radial direction near the tool head. When the guide sleeve slides along the axial direction of the tool bar to a position close to the tool head, the limiting hole engages with the spring-pressing limiting ball extending radially from the tool bar.
[0019] In some alternative embodiments, the fixing clamping part includes a clamping plate arranged perpendicular to the axial direction of the guide sleeve, one end of which is connected to the guide connecting part. The clamping plate has a groove that extends through the thickness direction of the clamping plate. The groove has an opening located at one end of the clamping plate. The width of the groove is greater than the diameter of the tool bar and smaller than the diameter of the screw head.
[0020] The beneficial effects of this utility model are:
[0021] This utility model provides a screwdriver accessory and screwdriver. Through the coordinated operation of a guide sleeve, a guide connecting part, and a fixed clamping part, the screw's direction is limited and its position is maintained during the tightening process. The guide sleeve can be fitted onto the screwdriver shank to maintain the coaxial positioning of the accessory and the screwdriver head, ensuring that the overall direction is consistent with the shank. The guide connecting part is a rigid structure, fixedly connected to the outer periphery of the guide sleeve and extending axially to form a stable extension support, preventing the screw from swaying or shaking during tightening. The space between the guide sleeve and the fixed clamping part forms a viewing area, allowing the operator to easily observe the screw's position and tightening status, improving operational intuitiveness. The fixed clamping part is located at the distal end of the guide connecting part to clamp and limit the screw, keeping the screw in contact with the screwdriver head and maintaining a fixed direction during the initial tightening stage. The length of the guide connecting part determines the relative position between the fixed clamping part and the screwdriver head. When the guide sleeve is fitted onto the end of the shank closest to the screwdriver head, the fixed clamping part is precisely located at the mating position between the screw head and the screwdriver head. Because the guide connection is rigid and has a constant length, the fixing clamp will not shift after the guide sleeve is positioned, ensuring that the distance between the screw head and the screwdriver tip remains consistent and preventing loosening or misalignment. This screwdriver accessory and screwdriver have a simple and lightweight overall structure, are easy to install and operate, do not affect the screwdriver's normal functions, and possess excellent practicality, versatility, and portability. Attached Figure Description
[0022] Figure 1 This is an assembly drawing of the screwdriver accessory and the screwdriver in this utility model;
[0023] Figure 2 This is a structural schematic diagram of the screwdriver accessory in this utility model.
[0024] In the picture:
[0025] 100. Tool holder; 200. Tool head; 300. Tool shank; 400. Screw;
[0026] 1. Guide sleeve; 2. Guide connecting part; 3. Fixing clamping part; 31. Groove. Detailed Implementation
[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0028] In this invention, the terms "comprising," "including," "having," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0029] In this invention, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "and / or" relationship.
[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," "combined," "coupled," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can be a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For example, a direct connection refers to two parts or components being connected together without an intermediate component, while an indirect connection refers to two parts or components each being connected to at least one intermediate component, with the connection achieved through the intermediate component. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.
[0031] In this invention, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the value and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values not using relative terms should also be disclosed as specific values with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.
[0032] In this invention, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can be performed by one part, one component, or a combination of multiple parts.
[0033] In this utility model, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationships shown in the accompanying drawings. They are used solely for ease of description and simplification of operation, and 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, in the context, it should be understood that when an element is mentioned as being "upper" or "lower" of another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as "upper side," "lower side," "left side," "right side," "front side," and "rear side" not only represent positive orientation but can also be understood as lateral orientation. For example, "above," "on top of," "upper side of," and "above" of the first feature and the second feature include the first feature being directly above, to the upper left, to the upper right, to the upper front, and to the upper rear of the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The terms "below," "under," "below," and "below" for "first feature" and "second feature" include situations where the first feature is directly below, to the lower left, to the lower right, in front of, or behind the second feature, or simply indicate that the first feature is at a lower horizontal level than the second feature. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.
[0034] Please refer to Figures 1 to 2 As shown, this embodiment provides a screwdriver accessory, including a guide sleeve 1, a guide connecting part 2, and a fixing clamping part 3. The guide sleeve 1 is used to be sleeved on the screwdriver shank 100; the guide connecting part 2 is a rigid structure, one end of which is fixedly connected to the outer periphery of the guide sleeve 1 and extends along the axial direction of the guide sleeve 1; the fixing clamping part 3 is connected to the end of the guide connecting part 2 away from the guide sleeve 1 and is disposed opposite to the guide sleeve 1, and is used to clamp and limit the screw 400; the visible part is used to observe the engagement between the screwdriver shank 100 and the screw 400.
[0035] Through the coordinated operation of the guide sleeve 1, the guide connecting part 2, and the fixed clamping part 3, the screw 400 is directionally limited and its position is maintained during the tightening process. The guide sleeve 1 can be fitted onto the screwdriver shank 100 to maintain the coaxial positioning of the accessory and the screwdriver head 200, ensuring the overall direction is consistent with the shank 100. The guide connecting part 2 is a rigid structure, fixedly connected to the outer periphery of the guide sleeve 1 and extending axially to form a stable extension support, preventing the screw 400 from swaying or vibrating during tightening. The space between the guide sleeve 1 and the fixed clamping part 3 forms a visible area, allowing the operator to easily observe the position and tightening status of the screw 400, improving operational intuitiveness. The fixed clamping part 3 is located at the distal end of the guide connecting part 2 to clamp and limit the screw 400, ensuring that the screw 400 remains in contact with the screwdriver head 200 and its direction is fixed during the initial tightening stage.
[0036] The length of the guide connecting part 2 is used to determine the relative position between the fixed clamping part 3 and the cutting head 200. When the guide sleeve 1 is fitted onto the end of the tool holder 100 near the cutting head 200, the fixed clamping part 3 is exactly located at the mating position between the head of the screw 400 and the cutting head 200. Since the guide connecting part 2 is rigid and has a constant length, the fixed clamping part 3 will not shift after the guide sleeve 1 is positioned, ensuring that the distance between the head of the screw 400 and the cutting head 200 remains consistent, preventing loosening or misalignment.
[0037] In the initial tightening stage, before the screw 400 enters the workpiece, the guide connection 2 provides axial rigid constraint, ensuring that the head of the screw 400 and the cutter head 200 are always in close contact and are not affected by vibration or angular deviation. This ensures that the two are coaxially and stably connected, ensuring accurate force direction, smooth tightening process, and improved installation efficiency and fastening quality.
[0038] This screwdriver accessory has a simple and lightweight overall structure, is easy to install and operate, does not affect the normal use of the screwdriver, and has good practicality, versatility and portability.
[0039] like Figure 2As shown, optionally, the fixing clamping part 3 includes a clamping plate, which is arranged perpendicular to the axial direction of the guide sleeve 1. One end of the clamping plate is connected to the guide connecting part 2. The clamping plate has a groove 31 that extends through the thickness direction of the clamping plate. The groove 31 has an opening located at one end of the clamping plate. The groove 31 of the clamping plate is used to clamp the shank of the screw 400, and the surface of the clamping plate opposite to the guide sleeve 1 is used to support the head of the screw 400. The clamping plate can provide stable axial support for the head of the screw 400 during the tightening process. The groove 31 clamps the shank of the screw 400, which can achieve precise radial guidance, keeping the screw 400 and the tool holder 100 strictly coaxial, avoiding directional deviation caused by tilting. Thus, the screw 400 is doubly constrained in both the axial and radial directions, preventing the screw 400 from loosening or detaching from the tool head 200. With the above structural design, the user does not need to hold the screw 400 by hand during the tightening process, which can keep the screw 400 in a vertical position, significantly improving assembly stability and operating efficiency. It is understood that the shape of the groove can be, but is not limited to, arc or square, and is not restricted here.
[0040] In some optional embodiments, an anti-slip pad is provided on the side of the clamping plate facing the guide sleeve 1, forming a high-friction contact surface between the screw 400 head and the clamping plate, preventing the screw 400 from sliding or deflecting due to vibration or bias during the initial tightening; at the same time, it can effectively absorb local stress, play a buffering role, and prevent scratches or deformation caused by direct hard contact between metal and metal. The anti-slip pad may be, but is not limited to, a rubber pad, and is not limited here.
[0041] In some optional embodiments, the guide connecting part 2 is a connecting plate that connects the guide sleeve 1 and the fixed clamping part 3. The guide sleeve 1 and the fixed clamping part 3 are spaced apart, and the space between the guide sleeve 1 and the fixed clamping part 3 constitutes the visible part. Through the visible part formed between the guide sleeve 1 and the fixed clamping part 3, the operator can directly observe the contact state and tightening progress of the screw 400 and the cutting head 200, avoiding misalignment or tilting of the screw 400 due to obstruction, and significantly improving assembly accuracy and operational intuitiveness. In addition, the connecting plate only provides support in necessary parts, and the hollow design reduces excess material, making the overall structure lighter.
[0042] In addition, the guide connecting part 2 can also be a sleeve with guide sleeve 1 and fixed clamping part 3 connected at both ends respectively, and a hollow visible part is provided on the outside of the sleeve.
[0043] like Figure 1As shown, the connecting plate is further arranged along the axial direction of the guide sleeve 1, and its thickness direction is consistent with the radial direction of the guide sleeve 1, and extends outward along its radial direction. Since the thickness direction of the connecting plate is consistent with the installation direction of the clamping plate, the contact area between the two is increased, making the connection between the two more secure. Moreover, after the contact area is increased, the stress distribution is more uniform when the connecting plate transmits the axial force of the tool bar 100 to the fixed clamping part 3, which can effectively reduce local stress concentration and improve the overall mechanical properties.
[0044] In some optional embodiments, the guide sleeve 1, the guide connecting part 2, and the fixing clamping part 3 are integrally formed structures, which effectively avoids the loosening, misalignment, or gap problems that may occur at the splicing and connection of multiple parts, and has better overall rigidity, and can maintain stable geometric relationship and coaxiality during the tightening of the screw 400.
[0045] This embodiment also provides a screwdriver, including a screwdriver accessory as described in any of the above embodiments, a shank 100, a blade head 200, and a handle 300. The handle 300, shank 100, and blade head 200 are sequentially fixedly connected. A guide sleeve 1 is detachably connected to the shank 100. The two are coaxially arranged, and the guide sleeve 1 can slide along the axial direction of the shank 100.
[0046] When the guide sleeve 1 slides to one end of the tool holder 100 near the tool head 200, the guide connecting part 2 extends along the axial direction of the tool holder 100, and the fixing clamping part 3 clamps and limits the screw 400 so that the tool head 200 abuts against the head of the screw 400; when the guide sleeve 1 slides along the tool holder 100 away from the tool head 200, the fixing clamping part 3 is located on the radial side of the tool holder 100.
[0047] By combining the guide sleeve 1 and the tool holder 100, a screwdriver with an integrated structure is formed, enabling the screwdriver to limit and hold the screw in the 40° direction, achieving precise tightening and improving the functionality of a general-purpose screwdriver. The guide sleeve 1 can be detachably installed on the tool holder 100, and the operator can choose whether to install the accessory as needed. When the limiting function is not needed, the accessory can be removed to maintain the original shape and portability of the screwdriver; when precise assembly is required, the accessory can be installed, accommodating multiple usage scenarios. The overall structure is simple, highly compatible, easy to store and carry, and significantly improves the ease of use and practicality of the screwdriver.
[0048] In some alternative embodiments, the guide sleeve 1 can be fixed to one end of the tool holder 100 near the tool head 200 to keep the distance between the fixed clamping part 3 and the tool head 200 relatively constant, ensuring that the head of the screw 400 can accurately align with the tool head 200 without any front-to-back deviation or misalignment.
[0049] Specifically, the guide sleeve 1 is a hollow annular structure with an opening along its axial direction. The tool shank 100 has at least a partial diameter-changing section. In this section, the diameter gradually increases along its axial direction from away from the tool head 200 to closer to it. This allows the guide sleeve 1 to form a tapered interference fit with the tool shank 100 near the tool head 200, while simultaneously allowing the guide sleeve 1 to slide along the axial direction of the tool shank 100 at positions other than near the tool head 200. The guide sleeve 1 can achieve rapid assembly and disassembly of the tool shank 100 through its own elastic deformation. Because the diameter of the tool shank 100 gradually increases along its axial direction, when the guide sleeve 1 slides to the tapered area near the tool head 200, it automatically forms an interference fit, achieving a stable fixation without the need for additional locking structures or fasteners, simplifying the installation process. Simultaneously, the tapered interference fit ensures that the guide sleeve 1 remains coaxial with the tool shank 100 during operation, preventing wobbling or eccentricity during rotation and improving the stability and accuracy of the screw 400 direction fixation. It is understandable that the guide sleeve 1 can be made of elastic material, such as plastic. The elastic properties of plastic allow the guide sleeve 1 to deform moderately at the opening, which facilitates clamping and forms a reliable clamping force. At the same time, it can quickly return to its original shape after the external force is released, maintaining long-term stable fit.
[0050] In other embodiments, the guide sleeve 1 has a limiting hole, and the tool bar 100 is provided with a spring-pressing limiting ball in the radial direction near the tool head 200. When the guide sleeve 1 slides along the axial direction of the tool bar 100 to a position near the tool head 200, the limiting hole engages with the spring-pressing limiting ball extending radially from the tool bar 100 to facilitate the positioning and fixing of the guide sleeve 1. When the guide sleeve 1 slides to a predetermined position, the spring-pressing limiting ball automatically embeds into the limiting hole, and the positioning and fixing can be completed without additional operation. The engagement between the limiting ball and the limiting hole forms a reliable mechanical locking structure, which can effectively prevent the guide sleeve 1 from sliding or shifting due to vibration or force during the tightening of the screw 400, and ensure the directional stability of the screw 400.
[0051] The fixing clamping part 3 includes a clamping plate, which is arranged perpendicular to the axial direction of the guide sleeve 1. One end of the clamping plate is connected to the guide connecting part 2. The clamping plate has a groove 31 that extends through the thickness direction of the clamping plate. The groove 31 has an opening located at one end of the clamping plate. The width of the groove 31 is greater than the diameter of the tool shank 100 and smaller than the diameter of the screw head 400, so as to ensure that the shank of the screw 400 can be smoothly inserted into the groove 31. The head of the screw 400 is limited by the clamping plate to achieve stable clamping. At the same time, an appropriate gap is reserved between the groove 31 and the tool shank 100, so that the clamping plate can naturally fit against the side of the tool shank 100 when the guide sleeve 1 slides or is in the storage state, avoiding lifting or jamming, thereby making the structure more compact, sliding smoothly, and easy to store and carry. It is understood that the shape of the groove can be, but is not limited to, arc-shaped or square, and is not limited here.
[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A screwdriver accessory, characterized in that, include: Guide sleeve (1) is used to be fitted onto the shank (100) of a screwdriver; The guide connection part (2) is a rigid structure, one end of which is fixedly connected to the outer periphery of the guide sleeve (1) and extends along the axial direction of the guide sleeve (1); The fixing clamping part (3) is connected to the end of the guide connecting part (2) away from the guide sleeve (1) and is disposed opposite to the guide sleeve (1) for clamping and limiting the screw (400). A visible section for observing the engagement between the tool holder (100) and the screw (400).
2. The screwdriver accessory according to claim 1, characterized in that, The fixed clamping part (3) includes a clamping plate, which is arranged axially perpendicular to the guide sleeve (1). One end of the clamping plate is connected to the guide connecting part (2). The clamping plate has a groove (31) that extends through the thickness direction of the clamping plate. The groove (31) has an opening at one end of the clamping plate.
3. The screwdriver accessory according to claim 2, characterized in that, The clamping plate is provided with an anti-slip pad on the side facing the guide sleeve (1).
4. The screwdriver accessory according to claim 1, characterized in that, The guide connecting part (2) is a connecting plate, which connects the guide sleeve (1) and the fixed clamping part (3). The guide sleeve (1) and the fixed clamping part (3) are spaced apart, and the space between the guide sleeve (1) and the fixed clamping part (3) constitutes the visible part.
5. The screwdriver accessory according to claim 4, characterized in that, The connecting plate is arranged axially along the guide sleeve (1), and its thickness direction is consistent with the radial direction of the guide sleeve (1), and extends outward along its radial direction.
6. A screwdriver, characterized in that, The screwdriver accessory, including the screwdriver handle (100), the screwdriver tip (200), and the screwdriver shank (300) as described in any one of claims 1 to 5, wherein the screwdriver shank (100) and the screwdriver tip (200) are fixedly connected in sequence, and the guide sleeve (1) is detachably connected to the screwdriver handle (100) and the guide sleeve (1) is slidable along the axial direction of the screwdriver handle (100).
7. The screwdriver according to claim 6, characterized in that, The guide sleeve (1) can be fixed to one end of the cutter bar (100) near the cutter head (200).
8. The screwdriver according to claim 7, characterized in that, The guide sleeve (1) is an annular hollow structure with an opening along its axial direction. The tool bar (100) has at least a partial diameter-changing section. In the diameter-changing section, the diameter gradually increases along its axial direction from away from the tool head (200) to closer to the tool head (200), so that the guide sleeve (1) forms a conical interference fit with the tool bar (100) at the position close to the tool head (200), while allowing the guide sleeve (1) to slide along the axial direction of the tool bar (100) at positions other than the position close to the tool head (200).
9. The screwdriver according to claim 7, characterized in that, The guide sleeve (1) has a limiting hole, and the cutter bar (100) is provided with a spring-pressing limiting ball in the radial direction near the cutter head (200). When the guide sleeve (1) slides along the axial direction of the cutter bar (100) to a position close to the cutter head (200), the limiting hole engages with the spring-pressing limiting ball that extends radially from the cutter bar (100).
10. The screwdriver according to claim 6, characterized in that, The fixed clamping part (3) includes a clamping plate, which is arranged axially perpendicular to the guide sleeve (1). One end of the clamping plate is connected to the guide connecting part (2). The clamping plate has a groove (31) that extends through the thickness direction of the clamping plate. The groove (31) has an opening located at one end of the clamping plate. The width of the groove (31) is greater than the diameter of the tool bar (100) and less than the diameter of the screw head (400).