A foldable screwdriver

Abstract

The utility model discloses a kind of foldable screwdrivers, including including knife bar, the top two sides of the knife bar are rotatably connected with handle main body by hinging element, the utility model is expanded to the position perpendicular to knife bar by rotating handle main body outward, greatly increase the force arm, can output greater torque, can easily cope with rust, jam or high pre-tightening force screw, without additional cooperation wrench and the like auxiliary tools, simplify operation process, significantly improve dismounting and installation efficiency;In unfolded state, the first magnet group in top is realized automatic adsorption by opposite magnetic pole attraction, two handle main body are firmly locked in unfolded position, effectively prevent handle accidental folding when high torque is applied, after use, handle main body can be rotated inwards and closed, overall folding is compact, flat form, greatly reduce the volume of tool, significantly improve portability and space utilization.

Description

Technical Field

[0001] This utility model belongs to the field of screwdriver technology, and in particular relates to a foldable screwdriver. Background Technology

[0002] Screwdrivers, as a basic and widely used hand tool, are mainly used for tightening or loosening screws. They play an irreplaceable role in industrial manufacturing, equipment maintenance, home decoration, and other fields. Traditional screwdrivers usually consist of a shaft and a handle of fixed length. They have a simple structure and low manufacturing cost, but they have obvious limitations in practical applications.

[0003] First, the fixed lever arm length of traditional screwdrivers limits their output torque. When encountering severely corroded, stuck, or high-preload screws, users often struggle to apply sufficient torque, leading to slippage or operational difficulties. To address this, operators frequently need to use wrenches, pliers, or other auxiliary tools to extend the lever arm and increase torque output. This method is not only cumbersome and inefficient but may also damage the screw head or create safety hazards due to improper tool matching. Second, with the increasing demand for tool portability in modern repair scenarios, traditional long-handled screwdrivers are inconvenient to carry and store due to their large size, while short-handled screwdrivers, although easy to carry, cannot meet the needs of high-torque operations. Utility Model Content

[0004] This utility model addresses the problems in the prior art by proposing the following technical solution: This utility model provides a foldable screwdriver, including a shank. The top two sides of the shank are rotatably connected to a handle body via hinges. The top of the two handle bodies are respectively embedded with a first magnet group with opposite polarities. The bottom of the two handle bodies on opposite sides are respectively embedded with a second magnet group with opposite polarities. The two handle bodies on opposite sides have grooves for accommodating the shank. When the two sets of handle bodies are unfolded into the use state, the first set of magnets attracts each other to keep the handle bodies unfolded; when the two handle bodies are closed into the storage state, the blade is accommodated in the groove, and the second set of magnets attracts each other to keep the handle bodies closed.

[0005] As an improvement to the above technical solution, a buckle groove is provided at the middle position of the two sets of handle bodies on opposite sides.

[0006] As an improvement to the above technical solution, the hinge is a pivot, and a torsion spring is provided on the pivot to provide a restoring force for the merging of the handle body.

[0007] As an improvement to the above technical solution, when the two sets of handle bodies are in the combined state, their outer contours are cylindrical, making them easy to grip.

[0008] The beneficial effects of this utility model are as follows: By rotating the handle body outwards to a position perpendicular to the blade, the lever arm is significantly increased, allowing for greater torque output. This easily handles rusted, stuck, or high-preload screws without the need for additional tools such as wrenches, simplifying the operation process and significantly improving disassembly and installation efficiency. In the unfolded state, the first set of magnets at the top automatically attracts the two handle bodies through the attraction of opposite magnetic poles, firmly locking them in the unfolded position. This effectively prevents the handles from accidentally folding when high torque is applied, ensuring operational safety and reliability. After use, the handle body can be rotated inwards to close, folding the entire tool into a compact and flat shape, greatly reducing its size and significantly improving portability and space utilization. Attached Figure Description

[0009] Figure 1 The diagram shown is a structural schematic of the closed state of this utility model; Figure 2 The diagram shown is a structural schematic of the present invention in its unfolded state; Figure 3 The image shows a bottom view of the closed state.

[0010] Reference numerals: 1. Hinge; 2. First magnet group; 3. Handle body; 4. Snap groove; 5. Second magnet group; 6. Blade bar; 7. Groove. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0012] A foldable screwdriver includes a shank 6. The top two sides of the shank 6 are rotatably connected to a handle body 3 via a hinge 1. The top of the two handle bodies 3 are respectively embedded with a first magnet group 2 of opposite polarity. The bottom of the two handle bodies 3 on the opposite side is respectively embedded with a second magnet group 5 of opposite polarity. The two handle bodies 3 on the opposite side are provided with a groove 7 for accommodating the shank 6. When the two sets of handle bodies 3 are unfolded into the use state, the first magnet group 2 attracts each other to keep the handle body 3 unfolded; when the two handle bodies 3 are closed into the storage state, the blade 6 is accommodated in the groove 7, and the second magnet group 5 attracts each other to keep the handle body 3 closed.

[0013] Specifically, existing screwdrivers on the market have a fixed lever arm length, limiting torque output. When encountering rusted screws or requiring high torque, auxiliary tools such as wrenches are needed, making the operation cumbersome. To quickly increase the lever arm and torque output, this foldable torque-enhancing screwdriver is needed. The core component is the screw shank 6, which performs the screw-tightening function. Two handle bodies 3 are connected to the top sides of the screw shank 6 via a hinge 1. This hinge allows the two handle bodies 3 to rotate relative to each other around the hinge point, which is the mechanical basis for the folding function. When encountering rusted screws or requiring high torque, the two handle bodies 3 are rotated outward from the closed state. When the two handle bodies are rotated to be perpendicular to the screw shank 6, the first magnet group 2 (two sets of magnets with opposite polarities) located at the top of the handle bodies will approach each other. Due to the attraction of opposite magnetic poles, the first magnet group 2 will generate a strong magnetic attraction, holding the two screws together. The handle body 3 is firmly fixed in the unfolded position, greatly increasing the lever arm and effectively increasing the torque output, making it more efficient and faster to disassemble and install screws. No additional auxiliary devices are needed. It is simple to make and easy to operate. Magnetic adsorption ensures that the handle will not fold accidentally when torque is applied. After use, the user overcomes the magnetic force of the first magnet group 2 and rotates the two handle bodies 3 inward to close them. As the handle bodies 3 close, one end of the blade 6 will be inserted into the groove 7 inside the two handle bodies 3. When the two handle bodies 3 are fully closed, the second magnet group 5 (two sets of magnets with opposite polarities) located on the opposite side of the bottom of the handle bodies 3 will come closer to each other. Also, due to the attraction of opposite magnetic poles, the second magnet group 5 will generate magnetic adsorption, firmly fixing the two handle bodies in the closed state. At this time, the entire screwdriver is folded into a compact and flat shape, which is convenient for carrying and storage.

[0014] In one embodiment, a slot 4 is provided at the middle position of the two sets of handle bodies 3 facing each other. The slot 4 can be used as a force point for the user's fingers. When it is necessary to unfold the handle from the closed state, the user can use his thumb or the fingers of the other hand to hold the slot 4, which makes it easier to overcome the magnetic attraction of the second magnet group 5 at the bottom, thereby opening the handle body 3 more effortlessly and conveniently, and improving the convenience of operation.

[0015] In one embodiment, the hinge 1 is a pivot shaft with a torsion spring on it to provide a restoring force for the closing of the handle body 3. The torsion spring is sleeved on the pivot shaft connecting the handle body 3 and the tool bar 6, and its two elastic arms are fixed to the handle body 3 and the tool bar 6 respectively. When the user unfolds the handle body 3 from the closed state, it needs to overcome the elastic force of the torsion spring to cause it to undergo torsional deformation and store elastic potential energy. Once the user releases the handle body, especially after overcoming the attraction force of the first magnet group 2 at the top, the potential energy stored in the torsion spring will be released, generating a restoring torque that causes the handle body 3 to rotate inward and tend to close.

[0016] In one embodiment, when the two handle bodies 3 are in the combined state, their outer contours are cylindrical, making them easy to grip. When the handle bodies 3 are completely closed, the two handle bodies 3 are joined together to form a smooth, continuous cylindrical surface, making them easy to hold and carry with one hand.

[0017] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A foldable screwdriver, characterized in that, The tool includes a tool holder (6), and the top two sides of the tool holder (6) are rotatably connected to a handle body (3) via a hinge (1). The top of the two handle bodies (3) are respectively embedded with a first magnet group (2) with opposite polarities. The bottom of the two handle bodies (3) facing each other is respectively embedded with a second magnet group (5) with opposite polarities. The two handle bodies (3) facing each other have a groove (7) for accommodating the tool holder (6). When the two sets of handle bodies (3) are unfolded to the use state, the first magnet group (2) attracts each other to keep the handle body (3) unfolded; when the two handle bodies (3) are closed, the knife bar (6) is accommodated in the groove (7), and the second magnet group (5) attracts each other to keep the handle body (3) closed.

2. The foldable screwdriver according to claim 1, characterized in that, The two sets of handle bodies (3) have a buckle groove (4) at the middle position on the opposite side.

3. A foldable screwdriver according to claim 2, characterized in that, The hinge (1) is a pivot, and a torsion spring is provided on the pivot to provide a restoring force for the merging of the handle body (3).

4. A foldable screwdriver according to claim 3, characterized in that, When the two sets of handle bodies (3) are in the combined state, their outer contours are cylindrical, making them easy to hold.

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