Anti-falling structure of screwdriver

Abstract

The utility model discloses an anti-dropping structure of a screwdriver, which comprises a grab handle, one end of the grab handle is provided with a mounting hole which is connected and matched with a screwdriver head, and the mounting hole is communicated with an air bag. And the other end of the grab handle is provided with a driving part for driving the air bag to generate negative pressure, preferably a screw cap. According to the structure, the negative pressure in the air bag is adjusted through rotation of the rotary cover, and therefore stable adsorption or release of the screwdriver head is achieved. In addition, the grab handle is further provided with a locking component which comprises a wedge block, a spring and a pressing rod rotationally arranged in the grab handle, and the pressing rod is used for locking or releasing the screwdriver blade. According to the design, the operation process is simplified, the working efficiency and the safety are improved, a complex mechanical structure is avoided, the maintenance cost and the failure rate are reduced, and the device is suitable for various industrial and household use scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of screwdrivers, in particular to an anti-slip structure of a screwdriver. Background Art

[0002] A screwdriver is a commonly used tool for tightening or loosening screws. In daily use, the screwdriver needs to fit tightly with the screw head to ensure smooth and efficient operation. However, during the use of existing screwdrivers, especially in high-intensity or long-term operations, the connection between the screwdriver head and the screw is often unstable, causing the screwdriver head to fall off, affecting work efficiency and even causing safety accidents.

[0003] In order to solve the above problems, some screwdriver designs with anti-drop functions have appeared on the market. For example, some screwdrivers use magnetic adsorption or mechanical snaps to fix the screwdriver head. However, these designs often have certain limitations. Magnetic adsorption does not work well in environments with a lot of metal dust, while mechanical snaps may be difficult to operate due to their complex structure and are easily worn out due to long-term use.

[0004] Therefore, a novel screwdriver anti-falling structure is badly needed. Utility Model Content

[0005] The utility model aims to provide an anti-dropping structure for a screwdriver, which can effectively prevent the screwdriver head from dropping off during use.

[0006] The technical solution adopted by the utility model to solve the above-mentioned problem is: a screwdriver anti-drop structure, including a handle, one end of the handle is provided with a mounting hole connected and adapted to the screwdriver head, the mounting hole is connected to the airbag, and the other end of the handle is provided with a driving component for driving the airbag to generate negative pressure.

[0007] Preferably, the driving component is a rotary cover, which is threadedly connected to the handle, one end of the airbag is rotatably connected to the rotary cover, and the airbag does not rotate relative to the handle.

[0008] Preferably: the handle is also provided with a locking component for locking the screwdriver head, the locking component includes a wedge and a spring, the screwdriver head is provided with a slot adapted to be plugged into the wedge, the wedge is slidably arranged in the mounting hole, one end of the wedge is connected to the spring, one end of the spring is fixed to the inner wall surface of the handle, the locking component also includes a pressure rod, the pressure rod is rotatably arranged in the handle and the rotation center is located between the two ends of the pressure rod, one end of the pressure rod is arranged between the wedge and the spring, the other end of the pressure rod is provided with a pressure block, and the handle is provided with a pressing opening for revealing the pressure block.

[0009] Preferably: the handle is laterally provided with a through hole, the through hole is slidably adapted to be equipped with a grip rod, the airbag is provided with a closed channel adapted to the through hole, the airbag is divided into a fixed part and a telescopic part by the closed channel, one end of the fixed part is connected to the mounting hole, and one end of the telescopic part is rotatably connected to the rotary cover.

[0010] Preferably, a sealing rubber ring is provided in the mounting hole, and the inner diameter of the sealing rubber ring gradually decreases from the outside to the inside.

[0011] Preferably, the handle is provided with a slope near the mounting hole, a plurality of grooves are evenly arranged around the slope, and convex points are arranged on the surface of the slope between the grooves.

[0012] Preferably, the mounting hole is slidably connected and adapted to the screwdriver head, and the cross-sections of the mounting hole and the screwdriver head are designed to be polygonal.

[0013] Compared with the prior art, the utility model has the following advantages and effects:

[0014] The utility model includes a handle, one end of which is provided with a mounting hole adapted to be connected to a screwdriver head, the mounting hole is connected to an airbag, and the other end of the handle is provided with a driving component that drives the airbag to generate negative pressure. The screwdriver head is inserted into the mounting hole. Since the mounting hole is connected to the airbag, the end of the screwdriver head inserted forms a closed cavity with the airbag, and the airbag is driven by the driving component to generate negative pressure, so that the cavity generates negative pressure. Under the suction effect of the negative pressure, the screwdriver head can be firmly adsorbed in the mounting hole. The suction effect of the negative pressure ensures that the screwdriver head is not easy to fall off even under high-intensity use conditions. Compared with traditional mechanical buckles, it is not easy to cause wear of the screwdriver head, so that the connection stability of the screwdriver head is guaranteed, and the risk of safety accidents that may be caused by the screwdriver head falling off during use is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of an anti-slip structure of a screwdriver according to an embodiment of the utility model.

[0016] Figure 2 It is a structural schematic diagram of a handle according to an embodiment of the utility model.

[0017] Figure 3 It is a structural schematic diagram of a screwdriver head according to an embodiment of the utility model.

[0018] Figure 4 It is a partial cross-sectional view of the locking component of the embodiment of the utility model.

[0019] Figure 5 It is a schematic diagram of the use of the embodiment of the utility model when the handle passes through the through hole.

[0020] Figure numbers: handle 1, mounting hole 11, through hole 12, slope 13, groove 131, protrusion 132, pressing port 14, airbag 2, closed channel 21, fixing part 22, telescopic part 23, sealing rubber ring 3, screwdriver head 4, functional part 41, connecting part 42, card slot 43, symbol 44, driving part 5, screw cover 51, anti-slip ridge 52, locking part 6, wedge block 61, spring 62, pressure rod 63, pressure block 64, grip rod 7. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0022] See also Figure 1 - Figure 4 In the present embodiment, an anti-drop structure of a screwdriver is provided, which is specifically used to provide a screwdriver that can keep the screwdriver head 4 stably connected under high-intensity use conditions to improve the safety and efficiency of operation. The screwdriver comprises a handle 1, one end of which is provided with a mounting hole 11 connected and adapted to the screwdriver head 4, the mounting hole 11 is connected to the airbag 2, and the other end of the handle 1 is provided with a driving component 5 for driving the airbag 2 to generate negative pressure.

[0023] Specifically, in this embodiment, the screwdriver head 4 is inserted into the mounting hole 11. Since the mounting hole 11 is connected to the airbag 2, the end of the screwdriver head 4 inserted forms a closed cavity with the airbag 2. The airbag 2 is driven by the driving component 5 to generate negative pressure, so that the cavity generates negative pressure. Under the suction of the negative pressure, the screwdriver head 4 can be firmly adsorbed in the mounting hole 11. The suction of the negative pressure ensures that the screwdriver head 4 is not easy to fall off under high-intensity use conditions. Compared with traditional mechanical buckles, it is not easy to cause wear of the screwdriver head 4, so that the connection stability of the screwdriver head 4 is guaranteed, and the risk of safety accidents caused by the falling off of the screwdriver head 4 during use is reduced.

[0024] The driving component 5 is a rotary cover 51, which is threadedly connected to the handle 1, and one end of the airbag 2 is rotatably connected to the rotary cover 51, and the airbag 2 does not rotate relative to the handle 1. In this embodiment, the rotary cover 51 is threadedly connected to the handle 1, and the position of the rotary cover 51 relative to the handle 1 changes when the rotary cover 51 rotates. One end of the airbag 2 is rotatably connected to the rotary cover 51. When the position of the rotary cover 51 changes, since the airbag 2 does not rotate relative to the handle 1, the volume of the internal space of the airbag 2 changes, thereby generating or releasing negative pressure. The user can quickly adjust the negative pressure through a simple rotation action to achieve stable adsorption or release of the screwdriver head 4, which is simple and efficient to operate. Specifically, the screwdriver head 4 is inserted into the mounting hole 11 (it is also possible to drive the rotary cover 51 to rotate before installing the screwdriver head 4, squeeze the airbag 2, and discharge the air in the airbag 2), drive the rotary cover 51 to rotate, stretch the airbag 2, so that the airbag 2 generates negative pressure, and achieves the adsorption effect on the screwdriver head 4. By rotating the rotary cover 51 in the opposite direction, the negative pressure generated by the airbag 2 disappears, and continuing to rotate the rotary cover 51 generates positive pressure in the airbag 2, and the screwdriver head 4 is pushed out of the mounting hole 11 by the positive pressure. The utility model forms a closed negative pressure environment between the screwdriver head 4 and the mounting hole 11 through the driving component 5. This negative pressure environment can firmly adsorb the screwdriver head 4 and effectively prevent it from falling off during use. The utility model not only improves the connection stability of the screwdriver head 4, but also makes it quick and convenient to replace the screwdriver head 4, greatly improving work efficiency and safety. The design of the utility model avoids complex mechanical structures, reduces maintenance costs and failure rates, and is suitable for various industrial and household use scenarios.

[0025] In addition, the screw cap 51 of the utility model is made of flexible material (silicone, thermoplastic rubber, polyurethane, etc.). Considering ergonomics, the screw cap 51 is raised and has anti-slip ridges 52 on its surface, so that the screw cap 51 fits against the palm of the user and the fingers are in contact with the anti-slip ridges 52 to ensure that the user's hands are not easily fatigued when the screw cap 51 is driven to rotate for a long time (when used or when the negative pressure needs to be adjusted frequently), thereby providing a better grip and improving the user experience.

[0026] The handle 1 is also provided with a locking component 6 for locking the screwdriver head 4. The locking component 6 includes a wedge 61 and a spring 62. The screwdriver head 4 is provided with a card slot 43 that is plugged and matched with the wedge 61. The wedge 61 is slidably arranged in the mounting hole 11. One end of the wedge 61 is connected to the spring 62, and one end of the spring 62 is fixed to the inner wall surface of the handle 1. In this embodiment, during the process of inserting the screwdriver head 4 into the mounting hole 11, the side wall of the screwdriver head 4 contacts the wedge 61. Since the inclined surface of the wedge 61 faces one side of the screwdriver head 4, the screwdriver head 4 is pushed so that the wedge 61 is squeezed toward the spring 62. The screwdriver head 4 is continuously pushed until the card slot 43 is aligned with the wedge 61. Under the action of the elastic force of the spring 62, the wedge 61 is pushed into the card slot 43. The wedge 61 abuts against the inner wall of the card slot 43. At this time, it is difficult for the screwdriver head 4 to be pulled out of the mounting hole 11, thereby realizing the locking of the screwdriver head 4 by the locking component 6. In addition, the locking component 6 also includes a pressure rod 63, which is rotatably arranged in the handle 1 and the rotation center is located between the two ends of the pressure rod 63. One end of the pressure rod 63 is arranged between the wedge block 61 and the spring 62, and the other end of the pressure rod 63 is provided with a pressure block 64. The handle 1 is provided with a pressing port 14 for exposing the pressure block 64. When the screwdriver head 4 needs to be removed, the user presses the pressure block 64 at one end of the pressure rod 63 with a finger to make the pressure rod 63 rotate around the rotation center. The other end of the pressure rod 63 squeezes the spring 62, so that the wedge block 61 retracts and disengages from the slot 43 of the screwdriver head 4. At this time, the screwdriver head 4 can be smoothly removed from the mounting hole 11.

[0027] In this embodiment, the driving component 5 and the locking component 6 can be used in conjunction with each other. Before installing the screwdriver head 4, the gas in the airbag 2 is discharged through the driving component 5. When installing the screwdriver head 4, the screwdriver head 4 is locked through the locking component 6, and then the driving component 5 generates negative pressure to adsorb the screwdriver head 4. When the screwdriver head 4 is disassembled, the negative pressure state is eliminated through the driving component 5, and the screwdriver head 4 is taken out through the locking component 6. In addition, the driving component 5 generates positive pressure in the airbag 2, and the screwdriver head 4 can be directly pushed out when the locking component 6 is unlocked, without manually pulling out the screwdriver head 4, thereby improving the disassembly efficiency of the screwdriver head 4.

[0028] See also Figure 5 The handle 1 is provided with a through hole 12 in a lateral direction, and the through hole 12 is slidably fitted with a grip rod 7. The airbag 2 is provided with a closed channel 21 adapted to the through hole 12. The airbag 2 is divided into a fixed portion 22 and a telescopic portion 23 by the closed channel 21. One end of the fixed portion 22 is connected to the mounting hole 11, and one end of the telescopic portion 23 is rotatably connected to the rotary cover 51. In this embodiment, when the user uses a screwdriver to tighten or loosen the screw, the user presses the end of the handle 1 with the palm of one hand, and grabs the grip rod 7 with the other hand and moves it in the direction of loosening or tightening the screw. The lever effect facilitates the application of force, which helps the user to screw the screw.

[0029] See also Figure 4 A sealing rubber ring 3 is provided in the mounting hole 11, and the inner diameter of the sealing rubber ring 3 gradually decreases from the outside to the inside. When the screwdriver head 4 is inserted into the mounting hole 11, its end is against the sealing rubber ring 3. Since the inner diameter of the sealing rubber ring 3 gradually decreases from the outside to the inside, the screwdriver head 4 squeezes the sealing rubber ring 3, ensuring the airtightness between the mounting hole 11 and the end of the screwdriver head 4, which helps the driving component 5 to form a negative pressure on the airbag 2, thereby realizing the adsorption effect on the screwdriver head 4.

[0030] See also Figure 2 The handle 1 is provided with a slope 13 near the mounting hole 11, and the slope 13 is evenly provided with a plurality of grooves 131, and the surface of the slope 13 between the grooves 131 is provided with convex points 132. The design of the slope 13 and the grooves 131 provides more gripping area and better finger positioning, thereby increasing the gripping stability when using the screwdriver, and the design of the convex points 132 increases the friction between the hand and the handle 1, and reduces the possibility of slipping in the hand.

[0031] See also Figure 3 , the mounting hole 11 is slidably connected and adapted with the screwdriver head 4, and the cross-sections of the mounting hole 11 and the screwdriver head 4 are designed in a polygonal shape. In this embodiment, the screwdriver head 4 includes a functional end that cooperates with the screw and a connecting end that slidably adapts to the mounting hole 11, and the cross-section of the connecting end is designed in a regular polygonal shape and is connected and adapted with the mounting hole 11, so that the screwdriver head 4 and the handle 1 do not rotate relative to each other during use, thereby improving the stability of the connection between the two. The card slot 43 is provided on one of the planes of the connecting portion 42, and a symbol 44 is marked on the screwdriver head 4, so that the user can accurately position the screwdriver head 4 when installing it, and ensure that the locking component 6 locks the screwdriver head 4 through the card slot 43.

[0032] The above contents described in this specification are merely examples of the present utility model. Those skilled in the art of the present utility model may make various modifications or additions to the specific embodiments described, or replace them in similar ways, as long as they do not deviate from the contents of the present utility model specification or exceed the scope defined in the claims, they shall all fall within the protection scope of the present utility model.

Claims

1. A screwdriver anti-drop structure, comprising a handle, characterized in that: One end of the handle is provided with a mounting hole adapted to be connected with a screwdriver head, the mounting hole is connected with the airbag, and the other end of the handle is provided with a driving component for driving the airbag to generate negative pressure.

2. The anti-drop structure of a screwdriver according to claim 1, characterized in that: The driving component is a rotary cover, which is threadedly connected to the handle, one end of the airbag is rotatably connected to the rotary cover, and the airbag does not rotate relative to the handle.

3. The anti-drop structure of a screwdriver according to claim 1, characterized in that: The handle is also provided with a locking component for locking the screwdriver head, the locking component includes a wedge and a spring, the screwdriver head is provided with a slot adapted to be plugged into the wedge, the wedge is slidably arranged in the mounting hole, one end of the wedge is connected to the spring, one end of the spring is fixed to the inner wall surface of the handle, the locking component also includes a pressure rod, the pressure rod is rotatably arranged in the handle and the rotation center is located between the two ends of the pressure rod, one end of the pressure rod is arranged between the wedge and the spring, the other end of the pressure rod is provided with a pressure block, and the handle is provided with a pressing port for exposing the pressure block.

4. The anti-drop structure of a screwdriver according to claim 2, characterized in that: The handle is laterally provided with a through hole, the through hole is slidably adapted to be equipped with a grip rod, the airbag is provided with a closed channel adapted to the through hole, the airbag is divided into a fixed part and a telescopic part with the closed channel as a boundary, one end of the fixed part is connected to the mounting hole, and one end of the telescopic part is rotatably connected to the rotary cover.

5. The anti-drop structure of a screwdriver according to claim 4, characterized in that: A sealing rubber ring is arranged in the installation hole, and the inner diameter of the sealing rubber ring gradually decreases from the outside to the inside.

6. The anti-drop structure of a screwdriver according to claim 4, characterized in that: The handle is provided with a slope near the mounting hole, and a plurality of grooves are evenly arranged around the slope, and convex points are arranged on the surface of the slope between the grooves.

7. The anti-drop structure of a screwdriver according to claim 5, characterized in that: The mounting hole is slidably connected and adapted to the screwdriver head, and the cross-sections of the mounting hole and the screwdriver head are designed in a polygonal manner.

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