Universal screwdriver capable of clamping screws

Abstract

The utility model discloses a universal screwdriver capable of clamping screws, which comprises a handle and a screwdriver rod, the front end of the screwdriver rod is a threaded screwdriver head part, a section of sliding rail is arranged on the screwdriver rod, a sliding seat is arranged on the sliding rail, a spring used for pushing the sliding seat backwards is arranged at the front end of the sliding seat, an overturning arm is hinged on the sliding seat, and a screw clamping opening is arranged at the tail end of the overturning arm. Compared with the prior art, the threading tool has the advantages that the threading tool can be matched with screws of different specifications, and wide universality is achieved through the threading tool heads of various shapes. The screw can be clamped and pre-tightened in a narrow or one-hand operation space, so that the screw is prevented from falling off, and the time cost is reduced. The clamping releasing modes are various, the sliding seat is pushed by fingers, and the screwdriver can be pushed or pulled back and shaken by a slender tool, so that the screwdriver is suitable for different scenes. And the pre-tightened overturning arm can be fixed on the rear section of the cutter bar, so that the storage is convenient. The whole structure is simple and practical, manufacturing and maintenance cost is low, working efficiency can be improved, and application prospects are wide.

Description

Technical Field

[0001] This utility model relates to screwdrivers, and more particularly to a universal screwdriver that can hold screws. Background Technology

[0002] Screws are an indispensable part of the manufacturing industry. From large devices like airplanes and aircraft carriers to small items like computers and mobile phones, everything relies on these tiny screws. Therefore, screw-fastening tools have become a subject of research, as different materials and sizes of screws require vastly different tools. Preventing screws from falling into precision equipment and becoming impossible to remove, or even requiring the disassembly of other components, is a problem that needs to be solved. While traditional strong magnetic screwdrivers can attract ferrous screws and some stainless steel screws with high iron content, they still cannot attract screws made of other materials such as copper and aluminum. Therefore, developing a universal screwdriver capable of holding screws has become a pressing issue for those skilled in the art. Utility Model Content

[0003] The present invention addresses the aforementioned shortcomings by providing a universal screwdriver capable of clamping screws. It can be applied to various mechanical assembly industries for screw fastening. It can clamp and pre-tighten screws in confined spaces or where two hands cannot operate. Once the screw is pre-tightened and fixed, the clamping device can be disassembled, and the screw can be screwed in and tightened. This effectively reduces the time and cost wasted due to screws easily falling off during installation.

[0004] The above-mentioned objective of this utility model is achieved through the following technical solution: a universal screwdriver that can hold screws, including a handle and a shank, the front end of the shank being a thread cutting head, characterized in that: a slide rail is provided on the shank, a slide block is provided on the slide rail, a spring for pushing the slide block is provided at the front end of the slide block, a flip arm is hinged on the slide block, and a screw clip inlet is provided at the end of the flip arm.

[0005] Furthermore, the slide rail is provided with a front limiting part and a rear limiting part at both ends. The front end of the spring abuts against the front limiting part, and the rear end abuts against the slide block. Under normal conditions, the rear end of the slide block abuts against the rear limiting part under the action of the spring.

[0006] Furthermore, the front limiting part and the rear limiting part are circular and fixed on the tool holder.

[0007] Furthermore, there is at least one flipping arm.

[0008] Furthermore, there are two flip arms, which are respectively hinged to both ends of the slide block. The screw slots of the two flip arms have different widths to accommodate screws of different specifications.

[0009] Furthermore, the flipping arm is L-shaped.

[0010] Furthermore, the screw slot is U-shaped.

[0011] To facilitate the fixing of the flip arm in the non-working state, the flip arm is provided with a locking slot, and the tool bar is provided with a buckle. When the flip arm is not used to clamp screws, it flips backward and locks into the rear section of the tool bar. Alternatively, the flip arm and the tool bar are provided with magnets that attract each other. When the flip arm is not used to clamp screws, it flips backward and attracts to the rear section of the tool bar.

[0012] Furthermore, the thread cutter head can be in the shape of a straight line, cross, star, Y, triangle, U, or internal hexagon, etc.

[0013] The working principle of this utility model is as follows: When using this universal screwdriver that can hold screws, first place the screw on the head of the screwdriver and select the appropriate flip arm according to the screw size (if there are multiple flip arms of different sizes). Rotate the flip arm forward so that the screw slot at the end of the flip arm engages with the screw, and under the action of the spring, the slide block keeps pulling the flip arm backward, thereby fixing the screw. At this time, the screw can be pre-tightened onto the mounting part using the screwdriver head. After confirming that the screw has entered the threaded hole to a certain depth and is pre-tightened, first release the flip arm from the screw. This can be done by pushing the slide block forward with your fingers and slightly shaking the screwdriver to disengage the flip arm from the screw. If it is difficult to reach the slide block with your fingers, you can also use a thin tool to push the slide block and slightly shake the screwdriver to disengage the flip arm from the screw, or directly by slightly pulling back the screwdriver and slightly shaking the screwdriver to disengage the flip arm from the screw. After the tilting arm disengages from the screw, tilt the arm 180 degrees backward. The tilting arm is then secured to the rear of the tool holder by the engagement of the latches on the tilting arm and the clips on the tool holder, or by the magnets attracting the tilting arm to the tool holder. This releases the tilting arm from the screw. Then, continue using the screwdriver to tighten the screw completely, completing the screw installation process.

[0014] The advantages of this utility model compared with the prior art are:

[0015] 1. Adaptable to various screw sizes: It is equipped with at least one flip arm, and when there are two flip arms, their screw clamping inlet widths are different, which can adapt to clamping screws of different sizes. Whether it is a tiny screw in a small electronic device or a larger screw in a large machine, a suitable clamping method can be found, which greatly expands the application range of screwdrivers, eliminates the need to frequently change screwdrivers of different sizes, and improves work efficiency.

[0016] 2. Solve the problem of operation in confined spaces: It can clamp and pre-tighten screws with one hand by flipping the arm to hold the screw in confined spaces or spaces where it is impossible to operate with both hands. This overcomes the limitation of traditional screwdrivers that are difficult to operate in special spaces. It is especially suitable for confined spaces such as car engine compartments and the interior of precision instruments, and provides great convenience for mechanical assembly, equipment maintenance and other work.

[0017] 3. Reduced screw installation time and costs: Effectively avoids the problem of screws easily falling off during installation. With traditional screwdrivers, screws are prone to falling off when operated with one hand, and retrieving and repositioning them wastes a lot of time. This invention clamps and secures the screw, ensuring it remains stable on the screwdriver head before pre-tightening, reducing repetitive operations caused by screws falling off, significantly lowering time costs, and improving the overall efficiency of the installation work.

[0018] 4. Convenient storage of clamping device: After the screw is pre-tightened, the flip arm can be rotated 180 degrees and fixed to the rear of the tool bar by using the engagement of the buckle and the snap-fit ​​or magnetic attraction, so as to realize convenient storage of the clamping device, avoid the flip arm shaking interference during subsequent operation, and ensure the overall compactness of the tool, making it easy to carry and store.

[0019] 5. High versatility: The head of the thread cutter can be designed in a variety of common shapes such as slotted, cross, star, Y, triangle, U, and hexagonal, which can match screws with different slot types. Combined with the function of clamping screws of different sizes, it becomes a truly universal screwdriver, meeting a variety of work needs and reducing the number of tools required.

[0020] 6. Simple and practical structure: The overall structure is ingeniously designed and not complicated. It is mainly composed of handle, tool holder, slide rail, slide base, tilting arm, spring and limiting part. All parts work together, which is highly reliable, easy to manufacture and maintain, and relatively low cost. It has good economic benefits and broad application prospects.

[0021] 7. Flexible handling of various operating scenarios: Multiple practical methods are provided for releasing the screw from the rotating arm. When the operator's fingers can easily reach the slide, the slide can be pushed forward to disengage the rotating arm from the screw. In confined spaces where the slide is difficult to reach, a long, thin tool can be used. In extremely complex environments, even slight pulling back and shaking of the screwdriver can achieve this. This flexibility greatly adapts to different operating environments, ensuring smooth release from the screw in both open and narrow, complex spaces, further enhancing the screwdriver's practicality and operability in various scenarios. Attached Figure Description

[0022] Figure 1This is a schematic diagram of one side of the structure of the first embodiment of this utility model.

[0023] Figure 2 This is a schematic diagram of the other side of the structure of the first embodiment of this utility model.

[0024] Figure 3 This is a schematic diagram of the actual use state of the first embodiment of this utility model.

[0025] Figure 4 This is a schematic diagram of one side of the structure of the second embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the other side of the structure of the second embodiment of this utility model.

[0027] Figure 6 This is a schematic diagram of the use state of the flipping arm in the second embodiment of this utility model.

[0028] Figure 7 This is a schematic diagram of one side of the structure of the third embodiment of this utility model.

[0029] Figure 8 This is a schematic diagram of the structure on the other side of the third embodiment of this utility model. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] Example 1: As Figure 1 , Figure 2 and Figure 3 As shown, a universal screwdriver capable of clamping screws includes a handle 1 and a shank 2. The front end of the shank 2 is a threading head 3, which can be slotted, Phillips head, star head, Y head, triangular head, U head, or hexagonal head, etc. In this embodiment, a Phillips head is used. The shank 2 is provided with a slide rail 4, and the two ends of the slide rail 4 are provided with a front limiting part 5 and a rear limiting part 6. The front limiting part 5 and the rear limiting part 6 are circular and fixed to the shank 2. The slide rail 4 is provided with a slide block 7, and the front end of the slide block 7 is provided with a spring 8 for pushing the slide block 7 backward. The front end of the spring 8 abuts against the front limiting part 5, and the rear end abuts against the slide block 7. Under normal conditions, the rear end of the slide block 7 abuts against the rear limiting part 6 under the action of the spring 8. A flip arm 9 is hinged to both ends of the slide block 7. The flip arm 9 is hinged to both ends of the slide block 7. The end of the flip arm 9 is provided with a screw clamping inlet 10. The screw clamping inlet 10 is U-shaped and is used to clamp the screw 13. In order to facilitate the fixation of the flip arm 9 in the non-working state, the flip arm 9 is provided with a locking slot 11 and the tool bar 2 is provided with a buckle 12. When the flip arm 9 is not used to clamp the screw, it flips backward and is locked in the rear section of the tool bar 2.

[0032] Example 2: Figure 4 , Figure 5 and Figure 6 As shown, a universal screwdriver capable of clamping screws includes a handle 1 and a shank 2. The front end of the shank 2 is a threading head 3, which can be slotted, Phillips head, star head, Y head, triangular head, U head, or hexagonal head, etc. In this embodiment, a Phillips head is used. The shank 2 is provided with a slide rail 4, and the two ends of the slide rail 4 are provided with a front limiting part 5 and a rear limiting part 6. The front limiting part 5 and the rear limiting part 6 are circular and fixed to the shank 2. The slide rail 4 is provided with a slide block 7, and the front end of the slide block 7 is provided with a spring 8 for pushing the slide block 7 backward. The front end of the spring 8 abuts against the front limiting part 5, and the rear end abuts against the slide block 7. Under normal conditions, the rear end of the slide block 7 abuts against the rear limiting part 6 under the action of the spring 8. Two L-shaped rotating arms 9 are hinged to both ends of the slide block 7. Each rotating arm 9 has a screw-holding inlet 10 at its end, and the inlets 10 are U-shaped. The widths of the screw-holding inlets 10 on the two rotating arms 9 are different to accommodate screws of different sizes. To facilitate the fixing of the rotating arms 9 in the non-working state, the rotating arms 9 are provided with a locking slot 11, and the tool holder 2 is provided with a buckle 12. When the rotating arms 9 are not used to hold screws, they flip backward and lock into the rear section of the tool holder 2.

[0033] Example 3: As Figure 7 , Figure 8 As shown, a universal screwdriver capable of clamping screws includes a handle 1 and a shank 2. The front end of the shank 2 is a threading head 3, which can be slotted, Phillips head, star head, Y head, triangular head, U head, or hexagonal head, etc. In this embodiment, a Phillips head is used. The shank 2 is provided with a slide rail 4, and the two ends of the slide rail 4 are provided with a front limiting part 5 and a rear limiting part 6. The front limiting part 5 and the rear limiting part 6 are circular and fixed to the shank 2. The slide rail 4 is provided with a slide block 7, and the front end of the slide block 7 is provided with a spring 8 for pushing the slide block 7 backward. The front end of the spring 8 abuts against the front limiting part 5, and the rear end abuts against the slide block 7. Under normal conditions, the rear end of the slide block 7 abuts against the rear limiting part 6 under the action of the spring 8. Two L-shaped rotating arms 9 are hinged to both ends of the slide block 7. Each rotating arm 9 has a screw-holding inlet 10 at its end, and the inlets 10 are U-shaped. The widths of the screw-holding inlets 10 on the two rotating arms 9 are different to accommodate screws of different sizes. To facilitate the fixing of the rotating arms 9 in the non-working state, magnets 14 are provided on the rotating arms 9 and the tool holder 2. When the rotating arms 9 are not used to hold screws, they flip backward and are attracted to the rear section of the tool holder 2.

[0034] Here is a specific application example:

[0035] Scenario setting: Taking the installation of a small component in the engine compartment of a car as an example, the space in this area is narrow, the operating space is limited, and different sizes of Phillips head screws need to be installed.

[0036] Tools required: Prepare the universal screwdriver of this invention, capable of holding screws. The screwdriver shank 2 has a slide rail 4, with a circular front limit part 5 and a rear limit part 6 fixed at both ends. A spring 8 is connected to the front end of a slide block 7 on the slide rail 4. The front end of the spring 8 abuts against the front limit part 5, and the rear end abuts against the slide block 7. Normally, the slide block 7 abuts against the rear limit part 6 under the action of the spring 8. L-shaped rotating arms 9 are hinged to both ends of the slide block 7. The screw-holding inlets 10 at the ends of the two rotating arms 9 are U-shaped and of different widths to accommodate screws of different sizes. A latch 11 is provided on the rotating arm 9, and a corresponding latch 12 is provided on the shank 2 to secure the rotating arm 9; alternatively, magnets attract the rotating arm 9 and the shank 2. The screwdriver head 3 is cross-shaped to fit the screw being installed.

[0037] Operating Procedure: Select and hold the screw: Pick up the screwdriver and place a smaller Phillips head screw at the Phillips head 3. Observe the two rotating arms 9 and select the one with the smaller screw slot 10 width. Pinch the rotating arm 9 with your fingers and rotate it forward so that the U-shaped screw slot 10 at the end of the rotating arm 9 accurately engages with the screw. Due to the action of the spring 8 on the slide 7, the slide 7 pulls the rotating arm 9 backward, firmly fixing the screw to the screwdriver head.

[0038] Pre-tightening screws: Hold the screwdriver handle 1 and align the screwdriver head with the screw in the threaded hole on the component in the car's engine compartment. Slowly turn the screwdriver, using the screwdriver head 3 to gradually screw the screw into the threaded hole to pre-tighten it. When you feel that the screw has entered the threaded hole to a certain depth and is initially fixed, stop turning the screwdriver.

[0039] Release clamp:

[0040] a. Normal Space Operation: Pick up the screwdriver and place a small Phillips head screw on the Phillips head 3. Select the appropriate flip arm 9 to hold the screw in place. Secure the screw using the spring 8, and pre-tighten the screw. At this point, due to the relatively spacious operating area, push the slide 7 forward with your finger to compress the spring 8. The slide 7 will move the flip arm 9 forward and slightly wiggle it, allowing the screw slot 10 at the end of the flip arm 9 to disengage from the screw. If the space is large enough, you can even directly pry open the flip arm 9 to release it from the screw. Next, flip the flip arm 9 180 degrees backward, so that the slot 11 on the flip arm 9 fits tightly with the latch 12 on the tool holder 2, or use the magnets attracted to the flip arm 9 and the tool holder 2 to firmly fix the flip arm 9 to the rear section of the tool holder 2, thus completing the fixation of the flip arm 9 and completely releasing the flip arm 9 from the screw.

[0041] b. Operation in confined spaces: After tightening the screws, the engine compartment is extremely cramped, making it difficult to reach the slide block 7 directly with fingers. In this case, the technician takes a thin metal rod from the tool kit, aligns one end with the slide block 7, and gently pushes it. The slide block 7 moves forward under the push of the metal rod, compressing the spring 8 and causing a slight wobbling, disengaging the tilting arm 9 from the screws. Then, a screwdriver is taken out, and the tilting arm 9 is flipped 180 degrees backward and secured to the rear section of the screwdriver handle 2.

[0042] c. Special Circumstances: When the engine compartment is cramped and surrounded by obstacles, making it impossible to use long, thin tools, the mechanic tries another method. He holds the screwdriver handle 1, slightly pulls the screwdriver back, and simultaneously shakes it slowly and gently. During this pulling and shaking motion, the flip arm 9, which was originally stuck on the screw, gradually disengages. Then, the screwdriver is removed, and the flip arm 9 is flipped 180 degrees backward and secured to the rear section of the handle 2.

[0043] Tighten the screw: Grip the screwdriver handle 1 firmly again and continue to turn the screwdriver to fully screw the screw into the threaded hole until the screw is tightened in place, completing the installation of this smaller screw.

[0044] Installing larger screws: For larger screws requiring installation in the engine compartment, repeat the above steps. Select a rotating arm 9 with a wider screw catch inlet 10. Place the screw against the screwdriver head, rotate the rotating arm 9 to catch the screw, and use the spring 8 to secure it. Pre-tighten the screw, push the slide 7 forward to disengage the rotating arm 9 from the screw and secure it. Finally, tighten the screw to complete the screw installation of the small parts. Throughout the operation, this screwdriver effectively solves the problem of single-handed screw installation in confined spaces, greatly improving installation efficiency and reducing the time wasted due to screws falling out.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A universal screwdriver capable of holding a screw, comprising a handle and a shank, the shank having a threaded tip at its front end, characterized in that: The knife rod is provided with a slide rail, the slide rail is provided with a slide seat, the slide seat is provided with a spring for pushing the slide seat backward, the slide seat is hingedly connected with a turnover arm, and the turnover arm is provided with a screw clamping entrance.

2. A universal screwdriver capable of gripping a screw according to claim 1, characterized in that: The slide rail is provided with a front limiting part and a rear limiting part, the front end of the spring is abutted against the front limiting part, the rear end is abutted against the slide seat, and the rear end of the slide seat is abutted against the rear limiting part under the action of the spring.

3. A universal screwdriver capable of gripping screws according to claim 2, characterized in that: The front limiting part and the rear limiting part are in the shape of a ring and are fixed to the knife rod.

4. The universal screwdriver of claim 1, wherein: The turnover arm is at least one.

5. A universal screwdriver capable of gripping screws according to claim 4, characterized in that: The turnover arm is two, is hingedly connected with the slide seat at two ends, the widths of the screw clamping entrances of the two turnover arms are different, and are used for adapting to different specifications of screws.

6. The universal screwdriver of claim 1, wherein: The turnover arm is in the shape of L.

7. The universal screwdriver of claim 1, wherein: The screw clamping entrance is in the shape of U.

8. The universal screwdriver of claim 1, wherein: The turnover arm is provided with a clamping entrance, the knife rod is provided with a buckle, the turnover arm is turned backward and clamped on the rear part of the knife rod when the turnover arm is not used for clamping a screw.

9. The universal screwdriver of claim 1, wherein: The turnover arm and the knife rod are provided with attractive magnets, the turnover arm is turned backward and is attracted on the rear part of the knife rod when the turnover arm is not used for clamping a screw.

10. The universal screwdriver of claim 1, wherein: The screw head is in the shape of a character, a cross, a Chinese character, a star, Y, a triangle, U or an internal hexagonal.

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