Quick replacement screwdriver bit structure of direct current gun drill

Abstract

The utility model discloses a quick bit replacement structure of a direct current gun drill, and particularly relates to the technical field of gun drills, the quick bit replacement structure is mounted on the direct current gun drill and comprises a mounting ring, a limiting ring is arranged at the front end of the mounting ring, and the limiting ring is matched with the mounting ring to fix a bit of the direct current gun drill. Hexagonal grooves are formed in the sides, close to each other, of the limiting ring and the installation ring, penetrating holes communicated with the hexagonal grooves are formed in the front end of the limiting ring, the screwdriver heads are installed in the penetrating holes and the hexagonal grooves, an annular plate is fixedly arranged at the rear end of the limiting ring, and an annular inserting groove is formed in the front end of the installation ring. The screwdriver bit is firmly fixed through matching of the limiting ring and the mounting ring, meanwhile, the electromagnetic locks are meshed with the locking grooves in the annular plate, so that the annular plate and the mounting plate are firmly fixed together, the electromagnetic locks retract from the locking grooves respectively, the limiting ring and the screwdriver bit can be detached, the structure is simple, and the screwdriver bit is convenient to use. And quick replacement of the bit can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of gun drills, and more specifically to a structure for quickly replacing the bit of a DC gun drill. Background Art

[0002] A DC gun drill, also known as an electric drill or an electric screwdriver, is a commonly used electric tool mainly used for drilling holes or tightening / loosening screws. It is usually driven by a DC motor and can be powered by a battery or a power adapter. When in use, different types of bits need to be installed on a fixing device for use.

[0003] For example, a bit fixing device with the publication number CN218462110U in the prior art. Through the setting of the bit fixing device, when in use, a person can insert bits of different specifications into the telescopic sleeve, and then fix the telescopic ring on the gun drill body or the person's hand, which is convenient for carrying and avoids the difficulty of finding the bit during work, thus greatly improving the work efficiency of the person.

[0004] However, the above prior art still has the following problems when in use: The bits used in ordinary DC gun drills are usually fixed to the output shaft of the DC gun drill by means of threads or bolts. The bit is prone to looseness during high-speed rotation, and it takes a lot of time to screw multiple bolts, and it is very time-consuming and laborious to replace. Based on this, the utility model provides a structure for quickly replacing the bit of a DC gun drill, which is convenient for users to quickly disassemble and replace the bit for use. Summary of the Utility Model

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a structure for quickly replacing the bit of a DC gun drill. The bit is firmly fixed by the cooperation of the limiting ring and the mounting ring. At the same time, with the help of multiple electromagnetic locks engaging with multiple locking grooves on the ring plate, the ring plate and the mounting plate are firmly fixed together. And when the multiple electromagnetic locks are respectively retracted from the multiple locking grooves, the limiting ring and the bit can be disassembled. The structure is simple and can realize the quick replacement of the bit to solve the problems appearing in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solution: A quick-change bit structure for a DC gun drill, which is installed on the DC gun drill and includes an installation ring. A limit ring is provided at the front end of the installation ring. The limit ring and the installation ring cooperate to fix the bit of the DC gun drill. Hexagonal grooves are opened on both the side of the limit ring close to the installation ring. A perforation communicating with the hexagonal groove is opened at the front end of the limit ring. The bit is installed in the perforation and the hexagonal groove. A ring plate is fixedly provided at the rear end of the limit ring. An annular slot is opened at the front end of the installation ring. The ring plate is inserted into the annular slot. A plurality of electromagnetic locks are fixedly embedded on the installation ring. Locking grooves are opened on the outer wall of the ring plate. The plurality of electromagnetic locks are respectively inserted into the plurality of locking grooves.

[0007] In a preferred embodiment, two storage grooves are provided on the outer wall surface of the installation ring and are distributed vertically. A battery connected to the plurality of electromagnetic locks and an emergency external cable connector are respectively provided in the two storage grooves. The battery is used to provide electrical energy for the plurality of electromagnetic locks. At the same time, when the emergency external cable connector is contacted with a mobile phone, the mobile phone can be used to provide reverse electrical energy, making it more convenient to use.

[0008] In a preferred embodiment, sealing gaskets are fixedly bonded to the outer wall surface of the installation ring. The two sealing gaskets are distributed outside the two storage grooves. The storage grooves are covered by the sealing gaskets, which can play a role in protecting the battery and the emergency external cable connector.

[0009] In a preferred embodiment, a plurality of fixing grooves are opened on the inner wall of the hexagonal groove on the installation ring. The plurality of electromagnetic locks are respectively fixed in the plurality of fixing grooves to improve the stability of the electromagnetic locks.

[0010] In a preferred embodiment, a plurality of positioning blocks are fixedly provided on the inner wall of the annular slot. A plurality of positioning grooves are opened on the outer wall surface of the ring plate. The plurality of positioning blocks are respectively arranged in the plurality of positioning grooves. The cooperation of the positioning blocks and the positioning grooves can assist in installing the ring plate.

[0011] In a preferred embodiment, a plurality of anti-slip groove patterns are processed on the outer wall surface of the limit ring. The plurality of anti-slip groove patterns can improve the anti-slip property of the outer wall surface of the limit ring, thereby avoiding hand slippage when rotating the limit ring.

[0012] In a preferred embodiment, an installation hole is opened at the rear end of the installation ring. The installation hole is located at the center of the rear end of the installation ring. A plurality of circular holes communicating with the installation hole are opened on the outer wall surface of the installation ring. The plurality of circular holes are annularly arranged on the outer wall surface of the installation ring. Bolts are used to pass through the circular holes to firmly fix the installation ring and the output shaft of the DC gun drill together.

[0013] The technical effects and advantages of the present utility model:

[0014] The utility model firmly fixes the bit through the cooperation of the limit ring and the mounting ring. At the same time, with the aid of a plurality of electromagnetic locks engaging with a plurality of locking grooves on the ring plate, the ring plate and the mounting plate are firmly fixed together. And by retracting the plurality of electromagnetic locks from the plurality of locking grooves respectively, the limit ring and the bit can be disassembled. The structure is simple and can realize the rapid replacement of the bit. Brief Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 is a schematic diagram of the overall structure of the utility model;

[0017] Figure 3 is a structural diagram of the mounting ring, limit ring and bit of the utility model;

[0018] Figure 4 is a sectional view of the mounting ring and limit ring of the utility model;

[0019] Figure 5 is a structural diagram of the gasket and the mounting ring of the utility model.

[0020] The reference numerals are: 1, mounting ring; 2, limit ring; 3, bit; 4, hexagonal groove; 5, perforation; 6, ring plate; 7, annular slot; 8, electromagnetic lock; 9, locking groove; 10, storage groove; 11, battery; 12, emergency external cable connector; 13, gasket; 14, fixing groove; 15, positioning block; 16, positioning groove; 17, anti-slip thread groove; 18, mounting hole; 19, round hole. Detailed Description of the Preferred Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Referring to the attached drawings of the specification Figures 1-5 , the present utility model provides a structure for quickly replacing the bit of a DC gun drill, which is installed on the DC gun drill and includes a mounting ring 1. A limit ring 2 is provided at the front end of the mounting ring 1. The limit ring 2 and the mounting ring 1 cooperate to fix the bit 3 of the DC gun drill. Hexagonal grooves 4 are provided on the sides of the limit ring 2 and the mounting ring 1 close to each other. A perforation 5 communicating with the hexagonal groove 4 is provided at the front end of the limit ring 2. The bit 3 is installed in the perforation 5 and the hexagonal groove 4;

[0023] A ring plate 6 is fixedly provided at the rear end of the limit ring 2. An annular slot 7 is formed at the front end of the mounting ring 1. The ring plate 6 is inserted into the annular slot 7. A plurality of electromagnetic locks 8 are fixedly embedded in the mounting ring 1. A plurality of locking grooves 9 are formed on the outer wall of the ring plate 6. The plurality of electromagnetic locks 8 are respectively inserted into the plurality of locking grooves 9. A plurality of fixing grooves 14 are formed on the inner wall of the hexagonal groove 4 on the mounting ring 1. The plurality of electromagnetic locks 8 are respectively fixed in the plurality of fixing grooves 14 to improve the stability of the electromagnetic locks 8.

[0024] To improve the stability of the ring plate 6, a plurality of positioning blocks 15 are fixedly provided on the inner wall of the annular slot 7. A plurality of positioning grooves 16 are formed on the outer wall surface of the ring plate 6. The plurality of positioning blocks 15 are respectively arranged in the plurality of positioning grooves 16. By using the cooperation of the positioning blocks 15 and the positioning grooves 16, the mounting ring 1 plate can be assisted in installation.

[0025] To facilitate the disassembly of the limit ring 2, a plurality of anti-slip groove patterns 17 are processed on the outer wall surface of the limit ring 2. The plurality of anti-slip groove patterns 17 can improve the anti-slip property of the outer wall surface of the limit ring 2, thereby avoiding hand slipping when rotating the limit ring 2.

[0026] Moreover, a mounting hole 18 is formed at the rear end of the mounting ring 1. The mounting hole 18 is located at the center of the rear end of the mounting ring 1. A plurality of round holes 19 communicating with the mounting hole 18 are formed on the outer wall surface of the mounting ring 1. The plurality of round holes 19 are arranged in an annular array on the outer wall surface of the mounting ring 1. A bolt is used to pass through the round hole 19 to firmly fix the mounting ring 1 to the output shaft of the DC gun drill.

[0027] During use, the staff first fixes the mounting ring 1 to the output shaft of the DC gun drill. Then, the bit 3 is selected and passed through the hexagonal groove 4 and the perforation 5 on the limit ring 2. Then, the ring plate 6 on the limit ring 2 is inserted into the annular slot 7. When the rear end of the bit 3 moves into the hexagonal groove 4 on the mounting ring 1, the ring plate 6 pushes the locking tongues of the plurality of electromagnetic locks 8 to automatically retract into the electromagnetic locks 8. When the ring plate 6 moves into place, the locking tongues of the electromagnetic locks 8 are controlled to automatically insert into the locking grooves 9, thereby completing the fixation of the ring plate 6 and the mounting ring 1. When it is necessary to disassemble the bit 3, only need to control the plurality of electromagnetic locks 8 to be energized to drive the locking tongues to move out of the locking grooves 9. The structure is simple, which is convenient for the staff to quickly replace the bit 3.

[0028] Refer to the attached Figures 1-5 description. Two storage grooves 10 are formed on the outer wall surface of the mounting ring 1 and are distributed up and down. A battery 11 and an emergency external cable connector 12 connected to the plurality of electromagnetic locks 8 are respectively arranged in the two storage grooves 10. And a control switch is arranged in one of the storage grooves 10 to control the plurality of electromagnetic locks 8.

[0029] By placing the battery 11 and the emergency external cable connector 12 in the two storage slots 10 respectively, the battery 11 is used to supply power to multiple electromagnetic locks 8. At the same time, by contacting the emergency external cable connector with the mobile phone, the mobile phone can be used to supply power in reverse, making it more convenient to use.

[0030] Moreover, a sealing gasket 13 is fixedly bonded to the outer wall surface of the mounting ring 1. The two sealing gaskets 13 are distributed outside the two storage slots 10. The storage slots 10 are covered by the sealing gaskets 13, thereby playing a role in protecting the battery 11 and the emergency external cable connector.

[0031] Finally: The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A DC gun drill quick bit replacement structure, installed on a DC gun drill, characterized by: The invention comprises a mounting ring (1), a limiting ring (2) is provided at the front end of the mounting ring (1), the limiting ring (2) cooperates with the mounting ring (1) to fix a screwdriver bit (3) of a DC gun drill, a hexagonal groove (4) is provided on the side close to the mounting ring (1) of the limiting ring (2), a through hole (5) connected to the hexagonal groove (4) is provided at the front end of the limiting ring (2), and the screwdriver bit (3) is installed in the through hole (5) and the hexagonal groove (4); A ring plate (6) is fixedly provided at the rear end of the limiting ring (2); an annular slot (7) is provided at the front end of the mounting ring (1); the ring plate (6) is inserted into the annular slot (7); a plurality of electromagnetic locks (8) are fixedly embedded on the mounting ring (1); a plurality of locking slots (9) are provided on the outer wall of the ring plate (6); and the plurality of electromagnetic locks (8) are respectively inserted into the plurality of locking slots (9).

2. A DC gun drill quick bit replacement structure according to claim 1, characterized in that: The outer wall surface of the mounting ring (1) is provided with two storage slots (10) distributed up and down, and batteries (11) connected to a plurality of electromagnetic locks (8) and emergency external cable connectors (12) are respectively arranged in the two storage slots (10).

3. A DC gun drill quick bit replacement structure according to claim 2, characterized in that: A sealing gasket (13) is fixedly bonded to the outer wall surface of the mounting ring (1), and two sealing gaskets (13) are distributed outside the two storage grooves (10).

4. The DC gun drill quick bit replacement structure according to claim 1, characterized in that: The inner wall of the hexagonal groove (4) on the mounting ring (1) is provided with a plurality of fixing grooves (14), and the plurality of electromagnetic locks (8) are respectively fixed in the plurality of fixing grooves (14).

5. The DC gun drill quick bit replacement structure according to claim 1, characterized in that: A plurality of positioning blocks (15) are fixedly arranged on the inner wall of the annular slot (7), a plurality of positioning grooves (16) are opened on the outer wall surface of the ring plate (6), and the plurality of positioning blocks (15) are respectively arranged in the plurality of positioning grooves (16).

6. A DC gun drill quick bit replacement structure according to claim 1, characterized in that: The outer wall surface of the limiting ring (2) is processed with a plurality of anti-skid grooves (17) for improving the anti-skid property of the outer wall surface of the limiting ring (2).

7. The DC gun drill quick bit replacement structure according to claim 1, characterized in that: The mounting ring (1) has a mounting hole (18) at the rear end thereof, the mounting hole (18) being located at the center of the rear end thereof, and the outer wall surface of the mounting ring (1) has a plurality of circular holes (19) connected to the mounting hole (18), the plurality of circular holes (19) being distributed in a circular array on the outer wall surface of the mounting ring (1).

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