Dual-purpose screwdriver with detachable blade cover
By designing a dual-purpose screwdriver with a detachable cap, combined with torque adjustment and rigid output components, the problem of inaccurate torque control of traditional screwdrivers on screws of different sizes and materials is solved, achieving precise adjustment and stable output, and improving ease of operation and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO NIUMI TECHNOLOGY CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-06-23
AI Technical Summary
Traditional screwdrivers have limited functionality and struggle to achieve precise torque control on screws of different sizes and materials, impacting product quality and safety.
Design a dual-purpose screwdriver with a detachable cap. The screwdriver body has a torque adjustment component and a rigid output component at both ends. Precise torque adjustment is achieved by using a torque chamber, compression spring, spiral groove and guide post. The user experience is optimized by combining magnetic connection and rotating bearing.
It enables the screwdriver to perform multiple functions, meet different tightening needs, ensure the accuracy and stability of torque, and improve the user experience and durability.
Smart Images
Figure CN224390978U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hardware tools, and in particular to a dual-purpose screwdriver with a detachable blade cap. Background Technology
[0002] In various assembly and maintenance tasks, screwdrivers, as a basic and important hand tool, are widely used for tightening and loosening screws. With the diversification of equipment and products in industrial production and daily life, higher demands are being placed on the functionality and adaptability of screwdrivers.
[0003] Traditional screwdrivers typically have limited functionality, either offering a fixed torque output or lacking torque adjustment. For screwdrivers with a fixed torque output, precise torque control is difficult when dealing with screws of different sizes and materials. For example, in the assembly of electronic devices, screws are often small and made of soft materials. Using a screwdriver with a fixed high torque can easily lead to stripped screws or damage to delicate components such as internal circuit boards due to excessive torque. On the other hand, screwdrivers without torque adjustment rely on user experience to control the force. In situations where torque is critical, such as assembling certain parts of an automotive engine, accurate torque control cannot be guaranteed, thus affecting product quality and safety. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a dual-purpose screwdriver with a detachable blade cap, 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 dual-purpose screwdriver with a detachable blade cap, comprising a screwdriver body and a blade cap unit detachably connected to the screwdriver body, wherein a torque adjustment component and a rigid output component are respectively provided at both ends of the screwdriver body; the torque adjustment component includes:
[0006] The torque chamber is axially located within the screwdriver body.
[0007] An elastic element is disposed within the torque cavity;
[0008] The torque connector extends partially to the outside of the screwdriver body, and its outer wall is provided with a spiral guide.
[0009] The guide post is fixed to the inner wall of the torque cavity and is rotatably connected to the spiral guide part.
[0010] The blade cover unit can be detachably attached to the end of the torque adjustment assembly or the rigid output assembly.
[0011] Preferably, the rigid output component is a locking connector fixedly mounted on the screwdriver body.
[0012] Preferably, the elastic element is a compression spring, with one end abutting against the inner wall of the torque cavity and the other end connected to a torque connector.
[0013] Preferably, the spiral guide is a spiral groove formed on the outer wall of the torque joint, and one end of the guide post is embedded in the spiral groove.
[0014] Preferably, the knife cover unit includes an end cover that can be detachably fitted onto a torque connector or a locking connector and a tail cover that is rotatably connected to the end cover.
[0015] Preferably, both the torque connector and the locking connector are provided with magnetic components for magnetically connecting the end cap.
[0016] Preferably, the tail cover is provided with a rotating bearing, and the end cover is provided with a shaft connection part that cooperates with the rotating bearing. The tail cover is rotatably connected to the end cover through the rotating bearing and the shaft connection part.
[0017] Preferably, the screwdriver body is provided with a guide post cover; the guide post cover is sleeved on the screwdriver body along the end of the torque cavity.
[0018] Compared with existing technologies, the advantages of this invention are as follows: By setting up a screwdriver body and a screwdriver cover unit, the screwdriver body has a torque adjustment component and a rigid output component at both ends. The torque adjustment component utilizes a torque chamber, a compression spring, a torque connector with a spiral groove, and a guide post to achieve precise torque adjustment and protect the screw. The locking connector of the rigid output component meets the requirement of constant high torque. The end cap and tail cap of the screwdriver cover unit are connected by magnetic attraction between the torque connector and the locking connector, protecting the components and facilitating disassembly and assembly. The tail cap is connected to the end cap through a rotating bearing, optimizing the grip and operation experience. In addition, the guide post is protected by an outer cover, improving durability. Overall, the screwdriver is multifunctional, easy to operate, convenient to maintain, and reliable in performance. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is an exploded structural diagram of the present invention;
[0021] Figure 3 This is a cross-sectional structural diagram of the present invention.
[0022] Reference numerals: 1. Screwdriver body; 2. Screwdriver cover unit; 3. Torque adjustment assembly; 4. Rigid output assembly; 5. Torque chamber; 6. Elastic element; 7. Torque connector; 8. Helical guide; 9. Guide post; 10. Locking connector; 11. Helical groove; 12. End cap; 13. Tail cap; 14. Magnetic suction element; 15. Rotary bearing; 16. Shaft connection; 17. Guide post cover. Detailed Implementation
[0023] 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.
[0024] 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.
[0025] 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.
[0026] 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.
[0027] 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.
[0028] In this embodiment 1,
[0029] like Figures 1 to 3 As shown, this utility model provides a dual-purpose screwdriver with a detachable cap, including a screwdriver body 1 and a cap unit 2 detachably connected to the screwdriver body 1. The screwdriver body 1 is characterized by having a torque adjustment component 3 and a rigid output component 4 respectively at both ends; the torque adjustment component 3 includes:
[0030] The torque cavity 5 is axially formed inside the screwdriver body 1;
[0031] The elastic element 6 is disposed within the torque cavity 5;
[0032] The torque connector 7 extends partially to the outside of the screwdriver body 1, and its outer wall is provided with a spiral guide portion 8;
[0033] The guide post 9 is fixed to the inner wall of the torque cavity 5 and is rotatably connected to the spiral guide part 8;
[0034] The blade cover unit 2 can be detachably fitted onto the end of the torque adjustment component 3 or the rigid output component 4.
[0035] By setting a screwdriver body 1 and a screwdriver cover unit 2, and setting a torque adjustment component 3 and a rigid output component 4 at both ends of the screwdriver body 1 respectively, the screwdriver cover unit 2 can be detachably attached to the end of the torque adjustment component 3 or the rigid output component 4, thus realizing the diversification of screwdriver functions, meeting the torque requirements of different tightening operations, and the detachable screwdriver cover unit 2 makes it easier for users to hold and operate, improving the user experience.
[0036] The rigid output component 4 is a locking connector 10 fixedly installed on the screwdriver body 1.
[0037] By setting the rigid output component 4 to the locking connector 10 fixedly installed on the screwdriver body 1, a stable rigid torque output mode is provided for the screwdriver, which is suitable for working scenarios that require large and constant torque, and enhances the applicability of the screwdriver in specific operations.
[0038] The elastic element 6 is a compression spring, with one end abutting against the inner wall of the torque cavity 5 and the other end connected to the torque connector 7.
[0039] By setting the elastic element 6 as a compression spring, the torque is adjusted by utilizing the elastic deformation of the compression spring. When the torque reaches the set value, the spring is compressed, preventing the screw from being damaged due to over-twisting and effectively protecting the screw and the working surface.
[0040] The spiral guide 8 is a spiral groove 11 formed on the outer wall of the torque joint 7, and one end of the guide post 9 is embedded in the spiral groove 11.
[0041] By setting the spiral guide part 8 as a spiral groove 11 opened on the outer wall of the torque joint 7, and embedding one end of the guide post 9 into the spiral groove 11, the torque joint 7 can move axially along the guide post 9 when rotating, so as to accurately and stably realize the torque adjustment function and ensure the reliability of the torque adjustment process.
[0042] The knife cover unit 2 includes an end cover 12 that can be detachably fitted onto the torque connector 7 or the locking connector 10 and a tail cover 13 that is rotatably connected to the end cover 12.
[0043] By setting the knife cover unit 2, including an end cover 12 that can be detachably fitted onto the torque connector 7 or the locking connector 10 and a tail cover 13 that is rotatably connected to the end cover 12, the knife cover can protect the ends of the torque adjustment component 3 and the rigid output component 4, preventing foreign objects from entering and affecting performance. The tail cover 13, which is rotatably connected to the end cover 12, also makes it convenient for users to hold and operate, improving the user experience.
[0044] The tail cover 13 is provided with a rotating bearing 15, and the end cover 12 is provided with a shaft connection part 16 that cooperates with the rotating bearing 15. The tail cover 13 is rotatably connected to the end cover 12 through the rotating bearing 15 and the shaft connection part 16.
[0045] By setting a rotating bearing 15 inside the tail cap 13 and providing a shaft connection part 16 that cooperates with the rotating bearing 15 on the end cap 12, the tail cap 13 is rotatably connected to the end cap 12 through the rotating bearing 15 and the shaft connection part 16. This greatly reduces the friction when the tail cap 13 rotates, making it easier and smoother for users to hold and rotate the screwdriver, and further optimizing the operating feel and convenience.
[0046] Both the torque connector 7 and the locking connector 10 are provided with magnetic suction components 14 for magnetically connecting the end cap 12.
[0047] By providing magnetic attachments 14 for magnetically connecting the end cap 12 in both the torque connector 7 and the locking connector 10, the connection between the end cap 12 and the connector is more convenient and stable. The end cap 12 can be installed and removed without complicated operations, which improves the convenience of using the screwdriver. The magnetic connection ensures that the end cap 12 is not easy to fall off during use. At the same time, the torque connector 7 and the locking connector 10 can be used to easily and quickly change the screwdriver bit, thus making it suitable for different types of screws.
[0048] The screwdriver body 1 is provided with a guide post cover 17; the guide post cover 17 is sleeved on the screwdriver body 1 along the end of the torque cavity 5.
[0049] By setting a guide post cover 17 on the screwdriver body 1, the guide post cover 17 is sleeved on the screwdriver body 1 along the end of the torque cavity 5, which plays a good protective role for the guide post 9, avoiding damage to the guide post 9 from external collisions, scratches and other damage, thereby extending the service life of the guide post 9, ensuring the stable operation of the torque adjustment component 3, and improving the overall durability of the screwdriver.
[0050] In this embodiment 2,
[0051] like Figures 1 to 3 As shown, the screwdriver body 1 and the screwdriver cover unit 2 are configured, with torque adjustment and rigid output components 4 located at both ends of the body. The torque adjustment component 3 utilizes a torque chamber 5, a compression spring, a torque connector 7 with a spiral groove 11, and a guide post 9 to achieve precise torque adjustment and protect the screw. The locking connector 10 of the rigid output component 4 meets the requirement of constant high torque. The end cap 12 and the tail cap 13 of the screwdriver cover unit 2 are connected by magnetic connection between the torque connector 7 and the locking connector 10, protecting the components and facilitating disassembly and assembly. The tail cap 13 is connected to the end cap 12 via a rotating bearing 15, optimizing the grip and operation experience. In addition, the guide post cover 17 protects the guide post 9 and improves durability. Overall, the screwdriver is multifunctional, easy to operate, convenient to maintain, and reliable in performance.
[0052] In this embodiment 3,
[0053] like Figures 1 to 3 As shown, the working principle of this utility model is as follows:
[0054] 1. Torque Setting: When faced with a screw tightening task requiring precise torque control, operate the torque adjustment component 3. The torque connector 7 has a spiral groove 11 (i.e., a spiral guide 8) on its outer wall, which is embedded in and engages with one end of a guide post 9 fixed to the inner wall of the torque cavity 5. By rotating the screwdriver body 1, the guide post 9 slides within the spiral groove 11 on the torque connector 7, causing the torque connector 7 to move axially within the torque cavity 5, thereby adjusting the compression spring.
[0055] 2. Elastic Adjustment: The elastic element 6 is a compression spring, with one end firmly pressed against the inner wall of the torque chamber 5 and the other end connected to the torque connector 7. The axial movement of the torque connector 7 changes the degree of compression of the spring, thereby setting different torque values. The elastic force of the spring becomes the key factor in limiting the torque; when the torque applied to the screwdriver reaches the set value, the spring is further compressed.
[0056] 3. Torque Control: Insert the compatible screwdriver bit into the torque connector 7, then align the screwdriver bit with the screw and begin turning the screwdriver body 1. As the torque gradually increases during tightening, once the set torque is reached, the compression spring compresses, and the torque connector 7 moves axially, preventing further torque increase between the screwdriver bit and the screw. This effectively prevents the screw from stripping or being damaged due to excessive torque, achieving precise torque adjustment and control.
[0057] In this embodiment 4,
[0058] like Figures 1 to 3 As shown, the rigid output component 4 in this invention is a locking connector 10 fixedly mounted on the screwdriver body 1. In work scenarios requiring large and constant torque, such as assembling large mechanical equipment, without the need for torque adjustment, a suitable screwdriver head is connected to the locking connector 10. At this time, when the user rotates the screwdriver body 1, the applied torque is directly and stably transmitted to the screwdriver head on the locking connector 10 through the screwdriver body 1. Thanks to the rigid connection of the locking connector 10, the screw is tightened with a large and continuously stable torque, meeting the high torque requirements of specific tasks.
[0059] In the description of this specification, references are made to the terms "one embodiment", "some embodiments", "example", "specific example".
[0060] 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.
[0061] 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.
[0062] 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 dual-purpose screwdriver having a detachable blade cover, comprising a screwdriver body and a blade cover unit detachably connected to the screwdriver body, characterized in that: The screwdriver body has a torque adjustment component and a rigidity output component at both ends; the torque adjustment component includes: The torque chamber is axially located within the screwdriver body. An elastic element is disposed within the torque cavity; The torque connector extends partially to the outside of the screwdriver body, and its outer wall is provided with a spiral guide. The guide post is fixed to the inner wall of the torque cavity and is rotatably connected to the spiral guide part. The blade cover unit can be detachably attached to the end of the torque adjustment assembly or the rigid output assembly.
2. A dual-purpose screwdriver with a detachable blade cap according to claim 1, characterized in that: The rigid output component is a locking connector that is fixedly mounted on the screwdriver body.
3. A dual-purpose screwdriver with a detachable blade cap according to claim 2, characterized in that: The elastic element is a compression spring, with one end abutting against the inner wall of the torque cavity and the other end connected to a torque connector.
4. A dual-purpose screwdriver with a detachable blade cap according to claim 3, characterized in that: The spiral guide is a spiral groove formed on the outer wall of the torque joint, and one end of the guide post is embedded in the spiral groove.
5. A dual-purpose screwdriver with a detachable blade cap according to claim 4, characterized in that: The knife cover unit includes an end cover that can be detachably fitted onto a torque connector or a locking connector and a tail cover that is rotatably connected to the end cover.
6. A dual-purpose screwdriver with a detachable blade cap according to claim 5, characterized in that: Both the torque connector and the locking connector are equipped with magnetic components for magnetically connecting the end caps.
7. A dual-purpose screwdriver with a detachable blade cap according to claim 6, characterized in that: The tail cap is provided with a rotating bearing, and the end cap is provided with a shaft connection part that cooperates with the rotating bearing. The tail cap is rotatably connected to the end cap through the rotating bearing and the shaft connection part.
8. A dual-purpose screwdriver with a detachable blade cap according to claim 7, characterized in that: The screwdriver body is provided with a guide post cover; the guide post cover is sleeved on the screwdriver body along the end of the torque cavity.