Multi-functional screwdriver

Abstract

The utility model belongs to the technical field of dismounting tool, disclose a kind of multifunctional screw tool, comprising: handle;Bit assembly, the bit assembly includes batch rod, screw bit and broken wire takeout head, the screw bit and the broken wire takeout head are respectively arranged in the opposite ends of the batch rod along its length direction, the batch rod is detachably connected to the handle, and the length direction of the batch rod is consistent with the length direction of the handle;The batch rod includes first installation posture and second installation posture, when the batch rod is in the first installation posture, the broken wire takeout head is located in the handle interior, and the screw bit projects from the handle to be used for dismounting target screw;When the batch rod is in the second installation posture, the screw bit is located in the handle interior, and the broken wire takeout head projects from the handle to be used for taking out damaged screw.The utility model effectively integrates the function of conventional screw dismounting and damaged screw taking out.

Description

Technical Field

[0001] This utility model relates to the field of disassembly and assembly tools, and in particular to a multi-functional screw tool. Background Technology

[0002] In daily home life and appliance maintenance, the assembly and disassembly of screws is an essential part of the process. Therefore, screw tools are a basic tool used frequently for assembling and disassembling screws.

[0003] However, in actual disassembly or repair operations, problems such as stripped or broken screws frequently occur. A screw extractor is usually needed to remove these screws, requiring the purchase of a separate extractor. This not only increases the number of tools needed and raises the user's purchase cost, but also makes tool storage and carrying inconvenient. Furthermore, some users, facing stripped or broken screws, may resort to force to remove them due to a lack of tools, or simply discard items that are still repairable, easily damaging the items and wasting resources.

[0004] Therefore, there is an urgent need to develop a multi-functional screw tool to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-functional screw tool that effectively integrates the functions of conventional screw disassembly and assembly with the removal of damaged screws. This not only reduces the number of tools required and lowers the user's purchase cost, but also facilitates the storage and carrying of the tools.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a multi-functional screw tool, including:

[0008] handle;

[0009] A screwdriver bit assembly includes a screwdriver handle, screwdriver bits, and a broken screw removal head. The screwdriver bits and the broken screw removal head are respectively disposed at opposite ends of the screwdriver handle along its length. The screwdriver handle is detachably connected to a handle, and the length direction of the screwdriver handle is consistent with the length direction of the handle. The screwdriver handle has a first mounting position and a second mounting position. When the screwdriver handle is in the first mounting position, the broken screw removal head is located inside the handle, and the screwdriver bits protrude from the handle for disassembling and assembling target screws. When the screwdriver handle is in the second mounting position, the screwdriver bits are located inside the handle, and the broken screw removal head protrudes from the handle for removing damaged screws.

[0010] In some embodiments, the broken screw remover includes a threaded portion and a drilled portion. The threaded portion is connected to the screwdriver bar, and the drilled portion is located at the end of the threaded portion away from the screwdriver bar. The thread direction of the threaded portion is opposite to the thread direction of the damaged screw, and the drilled portion is used to drill a hole in the end face of the damaged screw for the threaded portion to be screwed in.

[0011] In some embodiments, the radial dimension of the threaded portion gradually decreases along the direction from the bit to the drilled portion.

[0012] In some embodiments, the hardness of both the threaded portion and the drilled portion is greater than the hardness of the damaged screw.

[0013] In some embodiments, the screwdriver bit is configured as any one of flathead, Phillips head, or hexagonal shape.

[0014] In some embodiments, both the screwdriver bit and the broken wire removal head can be detachably connected to the screwdriver handle.

[0015] In some embodiments, one of the screwdriver bit and the screwdriver handle is provided with a first slot, and the other of the screwdriver bit and the screwdriver handle is provided with a first locking block, the first locking block being able to engage or disengage from the first slot.

[0016] In some embodiments, one of the broken wire removal head and the biting rod is provided with a second slot, and the other of the broken wire removal head and the biting rod is provided with a second locking block, the second locking block being able to engage or disengage from the second slot.

[0017] In some embodiments, the handle has a hollow portion, and a third slot is provided on one of the outer peripheral surface of the screwdriver bar and the interior of the hollow portion. A third locking block is provided on the other of the outer peripheral surface of the screwdriver bar and the interior of the hollow portion. The third locking block can be engaged with the third slot to allow the screwdriver bar to be inserted into the interior of the hollow portion, or the third locking block can disengage from the third slot to allow the screwdriver bar to disengage from the hollow portion.

[0018] In some embodiments, the handle has a hollow portion, and a first magnetic element is provided on one of the outer peripheral surface of the screwdriver bar and the interior of the hollow portion, while a second magnetic element is provided on the other of the outer peripheral surface of the screwdriver bar and the interior of the hollow portion. The first magnetic element can be magnetically connected to the second magnetic element.

[0019] The beneficial effects of this utility model are:

[0020] The multi-functional screwdriver provided by this utility model has screwdriver bits and broken screw removal heads set at both ends of the screwdriver bar, and the screwdriver bar has a first installation posture and a second installation posture that can be switched between each other. This multi-functional screwdriver effectively integrates the functions of conventional screw disassembly and assembly and broken screw removal, which can reduce the number of tools required, reduce the user's purchase cost, and facilitate the storage and carrying of tools. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0022] Figure 1 This is an exploded structural diagram of the multifunctional screw tool provided in this embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the multi-functional screw tool provided in the embodiment of this utility model when it is in the first installation posture;

[0024] Figure 3 This is a structural diagram of the multi-functional screw tool provided in the embodiment of this utility model when it is in the second installation posture.

[0025] In the picture:

[0026] 1. Handle; 11. Hollow part;

[0027] 2. Screwdriver bit assembly; 21. Screwdriver bar; 22. Screwdriver bit; 23. Broken wire removal head; 231. Threaded part; 232. Drilling part. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, 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, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0035] like Figures 1-3 As shown, this embodiment provides a multi-functional screwdriver, including a handle 1 and a bit assembly 2.

[0036] The bit assembly 2 includes a screwdriver handle 21, a screwdriver bit 22, and a broken screw removal head 23. The screwdriver bit 22 and the broken screw removal head 23 are respectively disposed at opposite ends of the screwdriver handle 21 along its length. The screwdriver handle 21 is detachably connected to the handle 1, and the length direction of the screwdriver handle 21 is consistent with the length direction of the handle 1. The screwdriver handle 21 has a first mounting position and a second mounting position. When the screwdriver handle 21 is in the first mounting position, the broken screw removal head 23 is located inside the handle 1, and the screwdriver bit 22 protrudes from the handle 1 for disassembling and assembling the target screw. When the screwdriver handle 21 is in the second mounting position, the screwdriver bit 22 is located inside the handle 1, and the broken screw removal head 23 protrudes from the handle 1 for removing the damaged screw.

[0037] In practice, when it is necessary to remove or install the target screw, the screwdriver bar 21 is installed on the handle 1 in the first installation position (e.g., Figure 2 At this point, the screwdriver bit 22 protrudes from the outside of the handle 1. Insert the screwdriver bit 22 into the groove on the head of the target screw, and rotate the handle 1. The torque is then transmitted to the target screw through the screwdriver handle 21 and the screwdriver bit 22 to achieve screw removal and installation. When the screw experiences problems such as stripped threads or broken threads, the screwdriver handle 21 is reversed and installed in a second mounting position on the handle 1 (e.g., ...). Figure 3 At this point, the broken screw removal head 23 protrudes from the outside of the handle 1, allowing the broken screw removal head 23 to extend into the inside of the damaged screw. By rotating the handle 1, the torque can be transmitted to the damaged screw through the screwdriver bar 21 and the broken screw removal head 23, thereby removing the damaged screw from the item.

[0038] The multi-functional screwdriver provided in this embodiment has screwdriver bits 22 and broken screw removal heads 23 respectively set at both ends of the screwdriver bar 21. The screwdriver bar 21 has a first installation posture and a second installation posture that can be switched between each other. This multi-functional screwdriver effectively integrates the functions of conventional screw disassembly and assembly and broken screw removal. It can reduce the number of tools required, reduce the user's purchase cost, and facilitate the storage and carrying of tools.

[0039] In some embodiments, the screwdriver bar 21 can be detachably connected to the handle 1 via a snap-fit ​​mechanism. Specifically, the handle 1 has a hollow portion 11. A third slot is provided on one of the outer peripheral surface of the screwdriver bar 21 and the interior of the hollow portion 11, and a third locking block is provided on the other of the outer peripheral surface of the screwdriver bar 21 and the interior of the hollow portion 11. The third locking block can engage with the third slot to partially insert the screwdriver bar 21 into the hollow portion 11, or the third locking block can disengage from the third slot to disengage the screwdriver bar 21 from the hollow portion 11. With the snap-fit ​​structure, the screwdriver bar 21 can be quickly installed and removed via an insertion and removal action, facilitating user switching of the screwdriver bar 21's installation position.

[0040] In other embodiments, the screwdriver bar 21 can also be detachably connected to the handle 1 via magnetic attraction. Specifically, the handle 1 has a hollow portion 11, and a first magnetic attractor is provided on one of the outer peripheral surface of the screwdriver bar 21 and the interior of the hollow portion 11, while a second magnetic attractor is provided on the other of the outer peripheral surface of the screwdriver bar 21 and the interior of the hollow portion 11. The first magnetic attractor can be magnetically connected to the second magnetic attractor. With this configuration, magnetic force can be used for quick adsorption and positioning, making assembly easy.

[0041] like Figure 1 As shown, in some embodiments, the broken screw remover 23 includes a threaded portion 231 and a drilled portion 232. The threaded portion 231 is connected to the screwdriver bar 21, and the drilled portion 232 is disposed at the end of the threaded portion 231 away from the screwdriver bar 21. The thread direction of the threaded portion 231 is opposite to the thread direction of the damaged screw. The drilled portion 232 is used to make a hole in the end face of the damaged screw so that the threaded portion 231 can be screwed in.

[0042] With this setup, the drilling part 232 first makes a hole on the end face of the damaged screw, providing a stable screwing reference for the threaded part 231. After the threaded part 231 is screwed into the hole, since the thread direction of the threaded part 231 is opposite to the thread direction of the damaged screw, when the user rotates the handle 1 to drive the threaded part 231 into the hole of the damaged screw, a force can be generated in the same direction as the loosening of the damaged screw, thereby efficiently removing the damaged screw from the item.

[0043] Optionally, the drilled portion 232 is configured with a pointed structure, with one end away from the threaded portion 231 being pointed, which can quickly pierce the damaged screw end face to make a hole.

[0044] like Figure 1 As shown, in some embodiments, the radial dimension of the threaded portion 231 gradually decreases along the direction from the shank 21 to the drilled portion 232. That is, the threaded portion 231 is tapered.

[0045] With this configuration, the smaller radial dimension of the threaded part 231 can effectively reduce the entry resistance in the initial stage of screwing in. As the screwing depth increases, the radial dimension of the threaded part 231 also gradually increases, which makes the meshing area between the threaded part 231 and the inner wall of the opening gradually increase, thereby making the torque transmission more uniform and stable.

[0046] Optionally, the hardness of both the threaded portion 231 and the drilled portion 232 is greater than the hardness of the damaged screw. This configuration ensures that the drilling and screwing process of the broken wire extractor 23 is smooth and efficient, while maintaining the structural integrity and performance of the broken wire extractor 23.

[0047] For example, the threaded portion 231 and the drilled portion 232 can be made of cemented carbide, which has a higher hardness than ordinary carbon steel screws.

[0048] In some embodiments, the screwdriver bit 22 is configured as any one of slotted, Phillips, or hexagonal shapes. The shape of the screwdriver bit 22 should be adapted to the shape of the groove in the head of the target screw to be disassembled or assembled.

[0049] In some embodiments, both the screwdriver bit 22 and the broken screw remover 23 can be detachably connected to the screwdriver handle 21.

[0050] With this design, when the screwdriver bit 22 becomes worn or deformed, or needs to be adapted to different screw sizes, the corresponding screwdriver bit 22 can be replaced individually without replacing the entire bit assembly 2. Similarly, when the broken thread extractor 23 becomes dull or its threads are damaged due to long-term use, or needs to handle damaged screws of different sizes, the appropriate broken thread extractor 23 can be replaced individually. This effectively reduces the usage and maintenance costs of the multi-functional screwdriver and significantly improves its flexibility.

[0051] Optionally, one of the screwdriver bit 22 and the screwdriver handle 21 is provided with a first retaining groove, and the other of the screwdriver bit 22 and the screwdriver handle 21 is provided with a first retaining block. The first retaining block can engage or disengage from the first retaining groove. That is, the screwdriver bit 22 is engaged with the screwdriver handle 21. The engaging connection method makes assembly and disassembly convenient and efficient, and the connection structure is stable and reliable after assembly.

[0052] Similarly, in some embodiments, one of the broken wire removal head 23 and the biting rod 21 is provided with a second slot, and the other of the broken wire removal head 23 and the biting rod 21 is provided with a second locking block, which can be engaged or disengaged from the second slot. That is, the broken wire removal head 23 is engaged with the biting rod 21.

[0053] Of course, in other embodiments, the screwdriver bit 22 and the broken wire removal head 23 can also be connected to the screwdriver handle 21 in other ways, such as threaded connection, magnetic connection, etc.

[0054] 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 other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations 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 multi-functional screwdriver, characterized in that, include: Handle (1); The bit assembly (2) includes a bit bar (21), a screwdriver bit (22), and a broken screw removal head (23). The screwdriver bit (22) and the broken screw removal head (23) are respectively disposed at opposite ends of the bit bar (21) along its own length direction. The bit bar (21) is detachably connected to the handle (1), and the length direction of the bit bar (21) is consistent with the length direction of the handle (1). The bit bar (21) includes a first installation posture and a second installation posture. When the bit bar (21) is in the first installation posture, the broken screw removal head (23) is located inside the handle (1), and the screwdriver bit (22) protrudes from the handle (1) for disassembling and assembling the target screw. When the bit bar (21) is in the second installation posture, the screwdriver bit (22) is located inside the handle (1), and the broken screw removal head (23) protrudes from the handle (1) for removing the damaged screw.

2. The multi-functional screw tool according to claim 1, characterized in that, The broken wire removal head (23) includes a threaded part (231) and a drilled part (232). The threaded part (231) is connected to the screwdriver bar (21). The drilled part (232) is located at the end of the threaded part (231) away from the screwdriver bar (21). The thread direction of the threaded part (231) is opposite to the thread direction of the damaged screw. The drilled part (232) is used to make a hole on the end face of the damaged screw so that the threaded part (231) can be screwed in.

3. The multi-functional screw tool according to claim 2, characterized in that, Along the direction from the bit (21) to the drilled portion (232), the radial dimension of the threaded portion (231) gradually decreases.

4. The multi-functional screw tool according to claim 2, characterized in that, The hardness of both the threaded portion (231) and the drilled portion (232) is greater than that of the damaged screw.

5. The multi-functional screw tool according to claim 1, characterized in that, The screwdriver bit (22) is set to any one of the following shapes: flathead, cross-shaped, or hexagonal.

6. The multi-functional screw tool according to claim 1, characterized in that, Both the screwdriver bit (22) and the broken wire removal head (23) can be detachably connected to the screwdriver handle (21).

7. The multi-functional screw tool according to claim 6, characterized in that, One of the screwdriver bit (22) and the screwdriver bar (21) is provided with a first slot, and the other of the screwdriver bit (22) and the screwdriver bar (21) is provided with a first locking block, which can be engaged or disengaged from the first slot.

8. The multi-functional screwdriver according to claim 6, characterized in that, One of the broken wire removal head (23) and the biting rod (21) is provided with a second slot, and the other of the broken wire removal head (23) and the biting rod (21) is provided with a second locking block, which can be engaged or disengaged from the second slot.

9. The multi-functional screw tool according to any one of claims 1 to 8, characterized in that, The handle (1) is provided with a hollow part (11). A third slot is provided on one of the outer peripheral surface of the bit (21) and the inside of the hollow part (11). A third block is provided on the other of the outer peripheral surface of the bit (21) and the inside of the hollow part (11). The third block can be engaged in the third slot to allow the bit (21) to be partially inserted into the hollow part (11), or the third block can be disengaged from the third slot to allow the bit (21) to be disengaged from the hollow part (11).

10. The multi-functional screw tool according to any one of claims 1 to 8, characterized in that, The handle (1) is provided with a hollow part (11). A first magnetic attractor is provided on one of the outer peripheral surface of the bit (21) and the interior of the hollow part (11), and a second magnetic attractor is provided on the other of the outer peripheral surface of the bit (21) and the interior of the hollow part (11). The first magnetic attractor can be magnetically connected to the second magnetic attractor.

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