A screwdriver with a split clamping structure

Abstract

This utility model discloses a screwdriver with a split clamping structure, including a shank and a handle. The shank has a cutting tip at its head and a tail portion disposed within the handle. The shank has a circular cross-section and a limiting portion. A force-applying sleeve is fitted onto the shank along the limiting portion, and the force-applying sleeve is pressed together with the shank after being fitted into the limiting portion. This utility model has a reasonable structural design. By setting the shank and handle, and ensuring the shank has a circular cross-section with a limiting portion, and is pressed together with the force-applying sleeve, it solves the problem of slippage of the force-applying sleeve in round-shank screwdrivers, enhancing connection stability and spatial adaptability. The force-applying sleeve has the same polygonal cross-section as the limiting portion, and its inner diameter is matched, preventing slippage and facilitating installation. The protruding teeth on the force-applying sleeve are placed inside the handle, increasing friction with the handle and ensuring the force-applying sleeve is stable and efficiently transmits force. The shank is connected to the handle through the limiting teeth, fixing the axial position of the shank and improving operational accuracy and durability.

Description

Technical Field

[0001] This utility model relates to the field of screwdrivers, and in particular to a screwdriver with a split clamping structure. Background Technology

[0002] Screwdrivers, as a widely used hand tool in various assembly and repair work, have a wide range of applications and play an important role in people's production and daily life. In the current market, screwdriver shanks come in various shapes, with the hexagonal shank being one of the most common. This design, to a certain extent, meets users' needs for torque transmission, as the hexagonal structure effectively prevents slippage of the torque-adjusting sleeve or other auxiliary gripping parts on the shank, ensuring relatively stable force transmission during screw tightening.

[0003] However, with the diversification of actual usage scenarios, hexagonal screwdrivers have gradually revealed some limitations. In certain specific work scenarios, such as in confined spaces or where there are special requirements for the tool's shape, round-bar screwdrivers are needed to better adapt to space constraints or meet specific operational needs. However, existing round-bar screwdrivers have problems with the connection method between the extension sleeve and the screwdriver handle. Currently, the commonly used method is a direct compression connection between the extension sleeve and the screwdriver handle. While this connection method can provide a certain connection in the initial stage, allowing the extension sleeve and the screwdriver handle to work together, after prolonged use, due to frequent stress and friction, slippage is prone to occur. Once slippage occurs, it becomes difficult for the user to transmit sufficient torque to the screwdriver head, resulting in reduced screw-tightening efficiency, or even the inability to properly tighten screws, greatly affecting the performance and causing considerable inconvenience to the user. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a screwdriver with a split clamping structure, in light of the current state of the technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a screwdriver with a split clamping structure, including a screwdriver bar and a handle, wherein the head of the screwdriver bar has a cutting tip, the tail of the screwdriver bar is disposed in the handle, the cross-section of the screwdriver bar is circular, a limiting part is provided on the screwdriver bar, and a force-applying sleeve is sleeved on the upper edge of the limiting part of the screwdriver bar, and the force-applying sleeve is squeezed and formed with the screwdriver bar after being sleeved into the limiting part.

[0006] The effects achieved by the above-mentioned components are as follows: By setting a circular blade and limiting part and a force-applying sleeve extrusion molding structure, the cross-section of the screwdriver blade in this invention is circular. This circular design, compared to the common hexagonal blade, can better adapt to some special working scenarios, such as working in confined spaces, where the circular blade has better spatial adaptability. The limiting part on the blade, and the force-applying sleeve fitted onto the limiting part before extrusion molding, effectively solves the problem of slippage between the force-applying sleeve and the blade in traditional round-bar screwdrivers. Traditional direct extrusion connection methods are prone to slippage after prolonged use, but by setting a limiting part on the blade, the connection between the force-applying sleeve and the blade is more stable. After the force-applying sleeve is fitted into the limiting part and extruded, the friction between the two increases significantly. During the torque transmission process when tightening the screw, the force-applying sleeve and the blade can work more closely together, greatly improving the performance.

[0007] Preferably, the cross-sectional shape of the force-applying sleeve and the limiting part is the same, the cross-section of the force-applying sleeve and the limiting part is polygonal, and the inner diameter of the force-applying sleeve is greater than or equal to the outer diameter of the limiting part.

[0008] The aforementioned components achieve the following effects: by setting the cross-sections of both the force-applying sleeve and the limiting part to be identical polygons, and with the inner diameter of the force-applying sleeve being greater than or equal to the outer diameter of the limiting part, the connection stability between the force-applying sleeve and the limiting part is further enhanced. This ensures that the force-applying sleeve and the limiting part not only experience frictional force generated by extrusion but also have the constraint of the polygonal surfaces fitting together, restricting the rotation of the force-applying sleeve relative to the cutter bar from multiple directions. Even under prolonged use and high torque, slippage of the force-applying sleeve is less likely. The fact that the inner diameter of the force-applying sleeve is greater than or equal to the outer diameter of the limiting part facilitates the installation of the force-applying sleeve and allows for better engagement with the limiting part during extrusion molding, ensuring a tight connection.

[0009] Preferably, the force-applying sleeve is provided with protruding teeth formed by extrusion, and the protruding teeth are arranged inside the handle.

[0010] The aforementioned components achieve the following effects: By incorporating protruding teeth on the force-applying sleeve and placing them within the handle, the force-applying sleeve exhibits teeth formed through compression, which are then positioned within the handle. Firstly, the protruding teeth increase the friction between the force-applying sleeve and the handle's interior, making the sleeve more stable within the handle and preventing it from wobbling or rotating relative to the handle, thus further enhancing the overall stability of the screwdriver structure. Secondly, when the user applies torque by gripping the handle, the tight fit between the protruding teeth and the handle's interior better transmits force to the screwdriver shank, avoiding force loss due to relative slippage between the force-applying sleeve and the handle, thereby improving the efficiency and effectiveness of screw tightening.

[0011] Preferably, the tail end of the cutter bar is provided with a limiting tooth formed by extrusion, and the cutter bar is set inside the handle by the limiting tooth.

[0012] The aforementioned components achieve the following effect: by setting the screwdriver shank 1 within the handle 2 via the limiting teeth 7, the limiting teeth effectively fix the axial position of the screwdriver shank within the handle, preventing axial movement and ensuring the stability of the relative position between the screwdriver shank and the handle during use. This helps users more accurately control the direction and magnitude of force applied by the screwdriver, improving operational precision, and also enhances the overall durability of the screwdriver structure, reducing the risk of damage caused by unstable connection between the screwdriver shank and the handle.

[0013] Preferably, the surface of the handle is provided with several anti-slip raised strips.

[0014] The aforementioned components achieve the following effect: By incorporating anti-slip raised strips on the handle surface, the design significantly improves the user's grip experience. In environments prone to dampness, oil, or other conditions that reduce friction between the hand and handle, the anti-slip raised strips significantly increase the surface roughness of the handle, thereby increasing the friction between the hand and handle. This allows the user to grip the handle more firmly during operation, effectively preventing the handle from slipping from their hand, even under conditions of greater force or more complex operation. This not only improves work efficiency but also ensures user safety, reducing the risk of accidents that may be caused by handle slippage.

[0015] Preferably, the cutter head type includes at least one of the following: straight, cross, star, plum blossom, and hexagonal.

[0016] The aforementioned components achieve the following effect: by offering a variety of screwdriver bit types, including at least one of the following: slotted, Phillips, star-shaped, Torx, and hexagonal. This diverse bit design enhances the screwdriver's versatility. In actual assembly and repair work, different types of screws require matching screwdriver bits to be tightened smoothly.

[0017] Compared with existing technologies, the advantages of this utility model are as follows: By setting a circular cross-section for the blade and handle, and incorporating a limiting part, the blade is extruded with a force-applying sleeve, solving the problem of slippage in the force-applying sleeve of a round-bar screwdriver, thus enhancing connection stability and spatial adaptability. The force-applying sleeve and the limiting part have the same polygonal cross-section, and the inner diameter of the force-applying sleeve is matched, further strengthening the connection, preventing slippage, and facilitating installation. The protruding teeth on the force-applying sleeve are placed inside the handle, increasing friction with the handle, ensuring the force-applying sleeve is stable and efficiently transmits force. The blade is connected to the handle through the limiting teeth, fixing the axial position of the blade and improving operational accuracy and durability. The anti-slip protrusions on the handle surface increase friction, ensuring operational safety and preventing the handle from slipping. The availability of multiple blade head models enhances the screwdriver's versatility, meeting the needs of different work scenarios, and greatly improving ease of use and work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded structural diagram of the tool holder and force-applying sleeve of this utility model.

[0020] Reference numerals: 1. Tool holder; 2. Handle; 3. Tool head; 4. Limiting part; 5. Force-applying sleeve; 6. Protruding tooth part; 7. Limiting tooth; 8. Anti-slip protrusion. Detailed Implementation

[0021] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0022] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] Furthermore, in addition to indicating orientation or positional relationship, the aforementioned terms may also be used to indicate other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in this utility model can be understood according to the specific circumstances.

[0024] Furthermore, the terms "installation," "setting," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts. The connection methods described herein are existing technologies without any modifications and are common knowledge to those skilled in the art. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] In this embodiment 1,

[0027] like Figures 1 to 2 As shown, this utility model provides a screwdriver with a split clamping structure, including a screwdriver 1 and a handle 2. The head of the screwdriver 1 has a cutting tip 3, and the tail of the screwdriver 1 is disposed inside the handle 2. The cross-section of the screwdriver 1 is circular. A limiting part 4 is provided on the screwdriver 1. A force-applying sleeve 5 is sleeved on the upper edge of the limiting part 4 of the screwdriver 1. After the force-applying sleeve 5 is sleeved into the limiting part 4, it is extruded and formed with the screwdriver 1.

[0028] By setting a circular blade 1, a limiting part 4, and a force-applying sleeve 5 in an extrusion molding structure, the cross-section of the blade 1 of the screwdriver in this invention is circular. This circular design, compared to the common hexagonal blade 1, can better adapt to some special working scenarios, such as working in confined spaces, where the circular blade 1 has better spatial adaptability. The limiting part 4 is provided on the blade 1, and the force-applying sleeve 5 is fitted onto the limiting part 4 and then extruded, effectively solving the problem of slippage between the force-applying sleeve 5 and the blade 1 in traditional round-bar screwdrivers. Traditional direct extrusion connection methods are prone to slippage after prolonged use. However, by setting the limiting part 4 on the blade 1, the connection between the force-applying sleeve 5 and the blade 1 becomes more stable. After the force-applying sleeve 5 is fitted into the limiting part 4 and extruded, the friction between the two increases significantly. During the torque transmission process when tightening the screw, the force-applying sleeve 5 and the blade 1 can work more closely together, greatly improving the performance.

[0029] The cross-sectional shape of the force-applying sleeve 5 and the limiting part 4 is the same, and the cross-section of the force-applying sleeve 5 and the limiting part 4 is polygonal. The inner diameter of the force-applying sleeve 5 is greater than or equal to the outer diameter of the limiting part 4.

[0030] By setting the cross-sections of the force-applying sleeve 5 and the limiting part 4 to be identical polygons, and the inner diameter of the force-applying sleeve 5 being greater than or equal to the outer diameter of the limiting part 4, the connection stability between the force-applying sleeve 5 and the limiting part 4 is further enhanced. This ensures that there is not only friction generated by extrusion between the force-applying sleeve 5 and the limiting part 4, but also constraint from the mutual fitting of the polygonal surfaces, restricting the rotation of the force-applying sleeve 5 relative to the cutter shank 1 from multiple directions. Even under prolonged use and high torque, the force-applying sleeve 5 is less prone to slippage. The fact that the inner diameter of the force-applying sleeve 5 is greater than or equal to the outer diameter of the limiting part 4 facilitates the installation of the force-applying sleeve 5 and allows for better engagement with the limiting part 4 during the extrusion molding process, ensuring a tight connection.

[0031] The force-applying sleeve 5 is provided with a protruding tooth 6 formed by extrusion, and the protruding tooth 6 is arranged inside the handle 2.

[0032] By incorporating a toothed portion 6 on the force-applying sleeve 5 and placing it within the handle 2, the force-applying sleeve 5 features toothed portions 6 formed by compression, which are then positioned within the handle 2. Firstly, the toothed portion 6 increases the friction between the force-applying sleeve 5 and the interior of the handle 2, making the force-applying sleeve 5 more stable within the handle 2 and preventing it from wobbling or rotating relative to each other, thus further enhancing the overall stability of the screwdriver structure. Secondly, when the user applies torque by gripping the handle 2, the tight fit between the toothed portion 6 and the interior of the handle 2 better transmits force to the screwdriver shank 1, avoiding force loss due to relative sliding between the force-applying sleeve 5 and the handle 2, thereby improving the efficiency and effectiveness of screw tightening.

[0033] The tail end of the cutter bar 1 is provided with a limiting tooth 7 formed by extrusion, and the cutter bar 1 is set in the handle 2 through the limiting tooth 7.

[0034] By setting the screwdriver shank 1 within the handle 2 via the limiting teeth 7, the axial position of the screwdriver shank 1 within the handle 2 is effectively fixed, preventing axial movement and ensuring the stability of the relative position between the screwdriver shank 1 and the handle 2 during use. This helps users more accurately control the direction and magnitude of force applied by the screwdriver, improving operational precision, and also enhances the overall durability of the screwdriver structure, reducing the risk of damage caused by unstable connection between the screwdriver shank 1 and the handle 2.

[0035] The surface of the handle 2 is provided with several anti-slip raised strips 8.

[0036] By incorporating anti-slip raised strips 8 on the surface of the handle 2, several anti-slip raised strips 8 are provided. This design significantly improves the user's grip experience on the handle 2. In environments prone to dampness, oil, or other conditions that reduce friction between the hand and the handle 2, the anti-slip raised strips 8 significantly increase the surface roughness of the handle 2, thereby increasing the friction between the hand and the handle 2. This allows the user to grip the handle 2 more firmly during operation, effectively preventing the handle 2 from slipping from the hand, even under conditions of greater force or more complex operation. This not only improves work efficiency but also ensures user safety and reduces the risk of accidents caused by the handle 2 slipping.

[0037] The cutter head 3 includes at least one of the following types: straight, cross, star, plum blossom, and hexagonal.

[0038] By offering a variety of screwdriver bit types 3, including at least one of the following: slotted, Phillips, star-shaped, Torx, and hexagonal, this diverse bit design enhances the screwdriver's versatility. In actual assembly and repair work, different types of screws require the corresponding bit type 3 to be tightened smoothly.

[0039] In this embodiment 2,

[0040] like Figures 1 to 2 As shown, this utility model solves the problem of slippage in the force-applying sleeve 5 of a round screwdriver by setting a blade 1 and a handle 2. The blade 1 has a circular cross-section and a limiting part 4, which is extruded with a force-applying sleeve 5. This enhances the connection stability and spatial adaptability. The force-applying sleeve 5 and the limiting part 4 have the same polygonal cross-section and the inner diameter of the force-applying sleeve 5 is matched, further strengthening the connection, preventing slippage, and facilitating installation. The protruding teeth 6 on the force-applying sleeve 5 are placed inside the handle 2, increasing the friction with the handle 2 and ensuring that the force-applying sleeve 5 is stable and transmits force efficiently. The limiting teeth 7 at the tail end of the blade 1 are connected to the limiting teeth of the handle 2, fixing the axial position of the blade 1 and improving the accuracy and durability of operation. The anti-slip protrusions 8 on the surface of the handle 2 increase the friction, ensuring operational safety and preventing the handle 2 from slipping. The availability of multiple types of blade heads 3 improves the versatility of the screwdriver, meets the needs of different work scenarios, and greatly improves the convenience and efficiency of use.

[0041] In this embodiment 3,

[0042] like Figures 1 to 2 The following is a flowchart illustrating the manufacturing process of the screwdriver of this invention.

[0043] The milling limiting part 4 is milled into the raw material of the tool holder 1. The limiting part 4 is polygonal, which provides a stable positioning reference for subsequent processes, facilitating precise machining and operation of the tool holder 1. This shape also helps to provide a reliable clamping part when assembling or using related tools.

[0044] The head is shaped and heat-treated with electroplating. Specific molds and processes are used to shape the cutter head 3 to meet the requirements of the corresponding screw. After the head is shaped, heat treatment effectively improves the mechanical properties of the cutter shank 1, increasing its hardness and toughness, ensuring that the cutter head 3 is not easily deformed or damaged during use. Subsequent electroplating forms a dense coating on the surface of the cutter shank 1, enhancing its corrosion resistance, extending its service life, and improving its appearance.

[0045] The limiting teeth 7, formed by extrusion at the tail of the tool holder 1, undergo further heat treatment and electroplating. The tail of the tool holder 1 is flattened to create a shape that meets design requirements, facilitating its connection with components such as the handle 2. A second heat treatment further optimizes the mechanical properties of the tail, making it more reliable under external forces. The second electroplating ensures the integrity of the coating on the entire surface of the tool holder 1, preventing corrosion at the tail from affecting its connection with other components.

[0046] The force-applying sleeve 5 is fitted onto the tool holder 1. The force-applying sleeve 5 fits the specific dimensions of the tool holder 1, laying the foundation for subsequent fixing operations. The force-applying sleeve 5 can increase the grip lever during use, making it easier for the user to apply force.

[0047] The press-fitting sleeve 5 fixes the tool holder 1. The press-fitting equipment applies pressure to the sleeve 5 to make the sleeve 5 and the tool holder 1 tightly connected, ensuring that the sleeve 5 will not loosen or fall off during use, thus ensuring the normal use function and stability of the screwdriver.

[0048] like Figures 1 to 2 The diagram shows the process of using the flathead screwdriver of this invention.

[0049] The milling limiting part 4 is milled into the raw material of the tool holder 1. The limiting part 4 is polygonal, which provides a stable positioning reference for subsequent processes, facilitating precise machining and operation of the tool holder 1. This shape also helps to provide a reliable clamping part when assembling or using related tools.

[0050] A slotted head 3 is fabricated on the head of the tool holder 1 and then heat-treated and electroplated to fit slotted screws. Subsequent heat treatment and electroplating improve the overall mechanical properties of the tool holder 1, enhance corrosion resistance, and improve its appearance.

[0051] Apply the tension sleeve 5 by fitting a suitable tension sleeve 5 onto the screwdriver shank 1 to prepare for subsequent fixing and use, thus increasing the force applied. Due to the unique structural characteristics of a flathead screwdriver, if operations such as pressing the tail of the screwdriver shank 1 to form the limiting teeth 7 are performed first, the tension sleeve 5 will be difficult to fit smoothly onto the screwdriver shank 1. This is because the flattened shape of the tail of the screwdriver shank 1 will change its diameter and outline, making it impossible for the tension sleeve 5 to fit properly. Therefore, applying the tension sleeve 5 first ensures the smooth progress of this process.

[0052] The stamped force-applying sleeve 5 fixes the tool rod 1. The stamping process is used to firmly fix the force-applying sleeve 5 to the tool rod 1, ensuring a stable connection between the two. During use, the force-applying sleeve 5 and the tool rod 1 will not undergo relative displacement, ensuring that the screwdriver can function normally.

[0053] The tail section of the screwdriver shank 1 is subjected to high-frequency tempering and extruded into a limiting tooth 7. The tail section is then optimized through high-frequency tempering to improve its microstructure and performance, making it more suitable for subsequent machining. Next, the tail section is flattened and extruded to form the limiting tooth 7. The limiting tooth 7 is used to tightly engage with components such as the handle 2, improving the overall stability and reliability of the screwdriver structure. This ensures a secure connection between the screwdriver shank 1 and the handle 2 during use, preventing loosening that could affect performance.

[0054] Due to the unique structure of the flathead screwdriver, performing operations such as fabricating the head 3 and pressing the tail of the shank 1 would hinder the installation of the force-adjusting sleeve 5. Therefore, it is necessary to first install the force-adjusting sleeve 5, and then perform the tail pressing and flattening process to form the limiting teeth 7, in order to ensure the smooth progress of the entire production process and the reliability of the product performance.

[0055] In the description of this specification, references are made to the terms "one embodiment", "some embodiments", "example", "specific example".

[0056] The descriptions using terms such as "example" or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, welding, and bonding that are mature in the existing technology, and will not be described in detail here.

[0058] The above description is only a preferred embodiment of this utility model. For those skilled in the art, various modifications and variations can be made in the specific implementation and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A screwdriver with split clamping structure, comprising a handle and a shank, characterized in that: The head of the cutter bar has a cutter head, the tail of the cutter bar is set inside the handle, the cross-section of the cutter bar is circular, a limiting part is provided on the cutter bar, and a force-applying sleeve is fitted on the upper edge of the limiting part of the cutter bar. After the force-applying sleeve is fitted into the limiting part, it is extruded with the cutter bar to form a shape.

2. A screwdriver with a split clamping structure according to claim 1, characterized in that: The cross-sectional shape of the force-applying sleeve and the limiting part is the same, and the cross-section of the force-applying sleeve and the limiting part is polygonal. The inner diameter of the force-applying sleeve is greater than or equal to the outer diameter of the limiting part.

3. A screwdriver with a split clamping structure according to claim 2, characterized in that: The force-applying sleeve is provided with protruding teeth formed by extrusion, and the protruding teeth are arranged inside the handle.

4. A screwdriver with a split clamping structure according to claim 3, characterized in that: The tail end of the cutter bar is provided with a limiting tooth formed by extrusion, and the cutter bar is set in the handle through the limiting tooth.

5. A screwdriver with a split clamping structure according to claim 4, characterized in that: The surface of the handle is provided with several anti-slip raised strips.

6. A screwdriver with a split clamping structure according to claim 5, characterized in that: The cutter head model includes at least one of the following: flat, cross, star, plum blossom, and hexagonal.

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