Electric drill used for disassembling worn screw with threaded opening

Abstract

The utility model discloses an electric drill for disassembling a threaded-mouth-worn screw. The tool comprises an electric drill shell, a telescopic control device arranged in the electric drill shell, a triangular square hole drill bit connected with the telescopic control device, a driving motor arranged in the electric drill shell, a chuck in driving connection with the driving motor and a drill bit limiting sleeve installed on the chuck. When facing a screw with a rusty and abraded threaded opening, the electric drill can drill a square groove at the threaded opening of the screw, then the drill bit is taken back, and the square structure at the front end of the drill bit limiting sleeve is clamped into the drilled square groove, so that torsion generated by the motor can be transmitted to the screw, and the screw can be disassembled more quickly and simply.

Description

Technical Field

[0001] The utility model relates to an electric drill for dismantling a worn screw with a flower head, belonging to a dismantling tool. Background Art

[0002] An electric drill is a commonly used tool for removing and installing screws. Its structure includes a shell that protects and accommodates the internal structure, an electric motor that provides power to the drill, a shaft head that connects to the motor and transmits torque and rotational motion, a switch installed on the shell to control the start and stop of the electric drill, and the drill bit cooperates with the screw's flower head to remove the screw using the torque transmitted by the shaft head.

[0003] Since most screws are made of metal, which rusts easily, the threaded ends of the screws can become blurred due to rust and wear. Using a traditional slotted or cross drill bit for disassembly can easily cause the drill bit to slip on the threaded ends of the screws, making disassembly difficult. Screws and nuts are commonly used in machinery, often in harsh working environments. During the recycling and disassembly of scrapped machinery, rusted screws require multiple tools and multiple steps to disassemble, making it an extremely time-consuming and labor-intensive process. Summary of the Invention

[0004] In order to overcome the above problems, the utility model provides an electric drill for removing worn screws with flower mouths. A square groove is drilled at the flower mouth by a triangular square hole drill bit. The drill bit is then retracted and the square structure at the front end of the drill limit sleeve installed on the electric drill chuck is used to clamp the drill bit into the square groove, so that the electric drill can transmit torque to the screw. The user can quickly remove the rusty screws and replace the appropriate drill bit and square sleeve according to the size of the screws.

[0005] The present invention aims to solve the problem of lack of specialized tools for disassembling rusted and worn screws. Disassembling rusted and worn screws requires multiple tools and multiple steps. Disassembling rusted screws requires a lot of manpower.

[0006] The objective of the present invention is achieved through the following technical solutions: an electric drill for removing worn screws with a flower head, the tool comprising: an electric drill housing, a telescopic control device arranged in the electric drill housing, a triangular square hole drill bit connected to the telescopic control device, a drive motor arranged in the electric drill housing, a chuck driven by the drive motor, and a drill limit sleeve installed on the chuck, wherein the drill limit sleeve is provided with a space for accommodating the triangular square hole drill bit, and the triangular square hole drill bit is installed in the drill limit sleeve.

[0007] The drill limit sleeve includes: a limit portion that cooperates with the rod of the Lello triangular square hole drill bit; a limit plate and a square screwdriver fixed at the end of the limit portion. The size of the square screwdriver is adapted to the opening drilled by the Lello triangular square hole drill bit. The chuck is a four-jaw chuck that clamps the limit portion of the drill limit sleeve. Furthermore, the drill limit sleeve has a square structure with the same size as the square hole drilled by the triangular square hole drill bit, and a through hole with the same shape and size as the triangular drill bit is provided in the middle. When in use, the four-jaw chuck clamps the rear end of the drill limit sleeve to drive the drill bit to rotate. The drive motor is used to communicate with a power source and the power supply is supplied to the motor by the power source; the triangular square hole drill bit can be connected to the telescopic control device through the bottom thread; the chuck is driven by the drive motor through the connecting shaft and the transmission gear set, and drives the drill bit to rotate.

[0008] The telescopic control device includes a telescopic shaft and an electrically controlled stopper. The telescopic shaft is provided with two stopper slots that mate with the stopper blocks on the electrically controlled stopper. The electrically controlled stopper is controlled by a stopper switch. One end of the telescopic shaft is connected to the interior of the electric drill housing via a spring; the other end of the telescopic shaft is provided with a threaded hole. The two stopper slots on the telescopic shaft mate with the stopper. The spring and the electrically controlled stopper jointly control the telescopic shaft's extension and retraction, enabling switching between drilling and demolition modes.

[0009] The triangular square hole drill bit includes: a threaded connection portion that cooperates with the threaded hole in the telescopic shaft; and a Lello triangular square hole drill bit fixed on the threaded connection portion. Further, the triangular square hole drill bit includes a triangular drill bit and a square sleeve; the front end of the drill bit is a Lello triangular square hole drill bit, which can drill a square slot on the screw. The rear end is threaded and can be connected to the telescopic shaft; there is a through hole in the middle of the square sleeve that is the same shape and size as the triangular square hole drill bit, which allows the drill bit to be telescoped back and forth. There is a circular pancake-shaped structure on the square sleeve that acts as a limit during installation. The front end size of the circular pancake-shaped structure is the same as the size of the square hole drilled by the triangular square hole drill bit. The rear end is larger in size and is clamped by the chuck when in use, driving the drill bit to rotate; for different types of screws, there are a variety of triangular square hole drill bits of different sizes available for replacement.

[0010] The electric drill for removing worn screws further includes: a controller; an electrical wire electrically connected to the controller; and a plug connected to the electrical wire. The electrically controlled limiter is connected to the controller, which is connected to the limiter switch. The drive motor is connected to the controller, which is connected to a motor switch.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The utility model solves the problem of lack of specialized tools for disassembling rusted and worn screws with flower-shaped ends. It rationally integrates the tools commonly used for disassembling rusted screws, simplifying the operation. It reduces manpower, allowing one person to quickly disassemble rusted and worn screws with flower-shaped ends without damaging the disassembled parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and examples;

[0014] Figure 1 This is a schematic diagram of the structure of an electric drill for removing worn screws with a flower head according to the present invention, comprising: 1-electric drill housing, 2-powered wire, 3-plug, 4-electric drill switch, 5-motor, 6-connecting shaft, 7-transmission gear set, 8-chuck, 9-drill stop sleeve, 10-triangular square hole drill bit, 11-telescopic shaft, 12-electrically controlled limiter, 13-spring, 14-fixed end, and 15-limiter control switch.

[0015] Figure 2 This is a schematic structural diagram of the triangular square hole drill bit of the utility model;

[0016] Figure 3 This is a structural diagram of the drill bit limiting sleeve of the utility model;

[0017] Figure 4 This is a schematic diagram of the cooperation between the triangular square hole drill bit and the drill limit sleeve of the utility model in the drilling mode;

[0018] Figure 5 This is a schematic diagram of the cooperation between the triangular square hole drill bit and the drill bit limit sleeve of the utility model in the disassembly mode;

[0019] Figure 6 This is a schematic diagram of the drill bit of the electric drill of the utility model in the drilling mode;

[0020] Figure 7 This is a schematic diagram of the drill bit of the electric drill of the utility model in the disassembly mode. DETAILED DESCRIPTION

[0021] like Figure 1As shown, an electric drill for removing worn screws with a flower-shaped tip comprises: an electric drill housing 1; a telescopic control device disposed within the electric drill housing 1; a triangular square hole drill bit 10 connected to the telescopic control device; a drive motor 5 disposed within the electric drill housing 1; a chuck 8 drivingly connected to the drive motor 5; a drill stopper 9 mounted on the chuck 8, the drill stopper 9 having a space for accommodating the triangular square hole drill bit 10, and the triangular square hole drill bit 10 being mounted within the drill stopper 9. The telescopic control device comprises a telescopic shaft 11 and an electrically controlled stopper 12; the telescopic shaft 11 has two stopper slots that mate with stopper blocks on the electrically controlled stopper 12; the electrically controlled stopper 12 is controlled by a stopper switch 15. One end of the telescopic shaft 11 is connected to the interior of the electric drill housing 1 via a spring 13; the other end of the telescopic shaft 11 has a threaded hole. The electric drill for removing worn screws with a flower-shaped tip also comprises: a controller; an electrical wire 2 electrically connected to the controller; and a plug 3 connected to the electrical wire. The electric control limiter 12 is connected to the controller, and the controller is connected to the limiter switch 15. The driving motor 5 is connected to the controller, and the controller is connected to the motor switch 4.

[0022] like Figure 2 As shown, the triangular square hole drill bit 10 includes: a threaded connection portion that cooperates with the threaded hole in the telescopic shaft 11; and a Lello triangular square hole drill bit fixed on the threaded connection portion.

[0023] like Figure 3 As shown, the drill bit limiter sleeve 9 includes a limiter portion that cooperates with the stem portion of the Lello triangle square hole drill bit; a limiter plate fixed to the end of the limiter portion; and a square screwdriver. The size of the square screwdriver is adapted to the opening drilled by the Lello triangle square hole drill bit.

[0024] like Figure 7 As shown, the chuck 8 is a four-jaw chuck that clamps the limiting portion of the drill bit limiting sleeve.

[0025] When you need to remove a screw with a rusty and worn flower head, if the electric drill is in the drilling state, such as Figure 4 and Figure 6 As shown, select a suitable drill bit, pass the triangular square hole drill bit 10 through the triangular hole at the front end of the chuck 8 and then connect it to the telescopic shaft 11 through a thread, and then clamp the drill bit with the chuck. If not, press the limit control switch 15, release the electric control limiter 12, put the electric drill into the drilling working state and then install the triangular square hole drill bit 10. Connect 220V AC power through the plug 3. Aim the triangular square hole drill bit 10 at the flower mouth of the rusty screw, press the electric drill switch 4, start the drive motor 5, drill a square groove at the flower mouth of the rusty screw, then release the electric drill switch 4, turn off the drive motor 5, press the limiter control switch 15, release the electric control limiter 12, the worker pushes the drill bit into the electric drill, so that the limiter enters another limit groove on the telescopic shaft 11, and the electric drill enters the disassembly working state, as shown Figure 5and Figure 7 As shown, the square structure at the front end of the drill stopper sleeve 9 is then inserted into the previously drilled square groove. The speed is adjusted, the electric drill switch 4 is pressed, the drive motor 5 is started, and the screw is screwed out. After the screw is screwed out, the limit control switch 15 is pressed, the electric control limiter 12 is released, the spring 13 is released, the telescopic shaft 11 is ejected, and the electric drill returns to the drilling working state.

Claims

1. An electric drill for removing worn screws with a flower head, characterized in that: include: Electric drill housing; a telescopic control device disposed within the housing of the electric drill; a triangular square hole drill bit connected to the telescopic control device; a drive motor disposed in the electric drill housing; A chuck connected to the driving motor; A drill bit limiting sleeve is installed on the chuck, wherein the drill bit limiting sleeve is provided with a space for accommodating the triangular square hole drill bit, and the triangular square hole drill bit is installed in the drill bit limiting sleeve.

2. The electric drill for removing worn screws according to claim 1, characterized in that: The telescopic control device includes a telescopic shaft and an electric control limiter; The telescopic shaft is provided with two limiting grooves that cooperate with the limiting blocks on the electric control limiter; The electric control limiter is controlled by a limiter switch.

3. The electric drill for removing worn screws according to claim 2, characterized in that: One end of the telescopic shaft is connected to the interior of the electric drill housing through a spring; the other end of the telescopic shaft is provided with a threaded hole.

4. The electric drill for removing worn screws according to claim 3, characterized in that: The triangular square hole drill bit comprises: a threaded connection portion that cooperates with the threaded hole in the telescopic shaft; and a Lello triangle square hole drill bit fixed on the threaded connection portion.

5. The electric drill for removing worn screws according to claim 4, characterized in that: The drill bit limiting sleeve includes: A limiting portion that cooperates with the rod portion of the Lello triangle square hole drill bit; A limiting piece and a square screwdriver are fixed to the end of the limiting portion.

6. The electric drill for removing worn screws according to claim 5, characterized in that: The size of the square screwdriver is adapted to the opening drilled by the Lello triangular square hole drill bit.

7. The electric drill for removing worn screws according to claim 5, characterized in that: The chuck is a four-jaw chuck that clamps the limiting part of the drill bit limiting sleeve.

8. The electric drill for removing worn screws according to claim 2, characterized in that: Also includes: Controller; an electric wire electrically connected to the controller; and a plug connected to the electric wire.

9. The electric drill for removing worn screws according to claim 8, characterized in that: The electric control limiter is connected to the controller, and the controller is connected to the limiter switch.

10. The electric drill for removing worn screws according to claim 8, characterized in that: The driving motor is connected to the controller, and the controller is connected to a motor switch.

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