CN212785075U

CN212785075U - Motor anti-stalling device for lithium electric drill

Info

Publication number: CN212785075U
Application number: CN202021764598.9U
Authority: CN
Inventors: 陈世青
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-03-23
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses a lithium electric drill is with motor anti-lock device that changes, bore the body including lithium electricity, the inside of lithium electric drill body is provided with the motor, the lateral wall fixedly connected with protection casing of motor, and the first pivot of output fixedly connected with of motor, the other end of first pivot runs through one side lateral wall of protection casing and rotates with it and be connected, the fixed plate that the multiple array of lateral wall fixedly connected with of first pivot set up, the other end fixedly connected with connecting plate of fixed plate, the lateral wall of connecting plate has the bracing piece through round hole sliding connection, the lateral wall and the fixedly connected with connecting block of connecting plate are run through to the one end of bracing piece, and the other end fixedly connected with fixed block of bracing piece. The utility model relates to a lithium electric drill technical field, this kind of lithium electric drill is with motor anti-blocking device that changes, can avoid the electric drill to cause inside motor to continuously generate heat because of the drill bit blocks, can indicate operating personnel in time to carry out the outage to the electric drill simultaneously and handle.

Description

Motor anti-stalling device for lithium electric drill

Technical Field

The utility model relates to a lithium electric drill technical field specifically is a lithium electric drill is with stifled device that changes of motor.

Background

The electric hand drill is a portable small-sized drilling tool, consists of a small motor, a control switch, a drill chuck and a drill bit, is a conventional product in electric tools, is also an electric tool product with the largest demand, and is widely applied to the reinforcement of building beams, plates, columns, walls and the like, and the installation of decoration, wall installation, supports, railings, advertising boards, air conditioner outdoor units, guide rails, satellite receiver elevators, steel structure plants and the like. The lithium electric drill is an electric drill powered by the lithium battery, has strong cruising ability, is light and is convenient for users to use.

However, the existing lithium electric drill is often in a situation that a drill bit is clamped in the using process, and the motor is still continuously output at the moment, so that the interior of the motor continuously generates heat, the service life of the motor is influenced, and the motor is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium electric drill is with motor anti-blocking device to the problem that the motor continuously generates heat, influences electric drill life when the lithium electric drill on the existing market that the solution above-mentioned background art provided takes place the drill bit and blocks.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a motor anti-rotation-blocking device for a lithium electric drill comprises a lithium electric drill body, wherein a motor is arranged inside the lithium electric drill body, a protective cover is fixedly connected to the side wall of the motor, a first rotating shaft is fixedly connected to the output end of the motor, the other end of the first rotating shaft penetrates through the side wall of one side of the protective cover and is rotatably connected with the protective cover, a plurality of fixing plates arranged in arrays are fixedly connected to the side wall of the first rotating shaft, a connecting plate is fixedly connected to the other end of each fixing plate, a supporting rod is slidably connected to the side wall of the connecting plate through a round hole, one end of the supporting rod penetrates through the side wall of the connecting plate and is fixedly connected with a connecting block, a fixing block is fixedly connected to the other end of the supporting rod, the fixing block comprises two first limiting faces symmetrically arranged, a, and the spacing face phase-match of stopper and second, the lateral wall cover of bracing piece is equipped with the spring, the one end of spring offsets with the lateral wall of connecting plate, and the other end of spring offsets with the lateral wall of fixed block, the lateral wall that the motor was kept away from to the protection casing rotates and is connected with the second pivot, the one end of second pivot runs through the lateral wall of protection casing and fixed cover is equipped with the turning block, the fixed slot that a plurality of arrays set up is seted up to the lateral wall of turning block, the fixed slot includes the spacing face of third that two symmetries set up, and fixed slot and fixed block phase-match.

Preferably, the fixed cover is equipped with the rubber sleeve on the handle lateral wall of lithium electric drill body, and the lateral wall of rubber sleeve is provided with the sand grip.

Preferably, the side wall of the fixing block is subjected to rounding treatment.

Preferably, the side walls of the fixing block and the fixing groove are both subjected to rough treatment.

Preferably, the lateral wall of second pivot is provided with first keyway, the lateral wall of turning block is provided with the second keyway, first keyway and second keyway pass through half round key connection.

Compared with the prior art, the beneficial effects of the utility model are that:

1. by arranging the fixing block, the fixing groove and the like, when the drill bit is clamped, the second rotating shaft cannot rotate, the motor still continuously rotates at the moment, the rotation of the motor drives the first rotating shaft to rotate, so that the fixing plate and the connecting plate are driven to rotate, the first limiting surface slides on the third limiting surface, and meanwhile, the spring is stressed and compressed, so that the fixing block is separated from the fixing groove, the first rotating shaft can continuously rotate, the output energy of the motor is continuously conveyed out, and the motor is prevented from continuously generating heat;

2. through setting up spring, fixed slot etc. when the fixed block is right with adjacent fixed slot, the elasticity of spring makes bracing piece and fixed block downstream to make the fixed block collide with the lateral wall of fixed slot, the collision sound suggestion user electric drill that produces is blocked, thereby in time cuts off the power supply to the electric drill.

Drawings

Fig. 1 is a schematic perspective view of a motor anti-stalling device for a lithium electric drill according to the present invention;

fig. 2 is a schematic perspective view of a partial structure inside a motor anti-stalling device for a lithium electric drill according to the present invention;

fig. 3 is a schematic left side view of a cross-sectional structure of a protective cover in the anti-stalling device of the motor for the lithium electric drill, which is provided by the utility model;

fig. 4 is a schematic front view of a cross-sectional structure of a protective cover in the anti-stalling device of the motor for the lithium electric drill, according to the present invention;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 3;

fig. 6 is an enlarged schematic view of a portion B in fig. 4.

In the figure: 1. a lithium electric drill body; 2. a rubber sleeve; 3. a motor; 4. a protective cover; 5. a second rotating shaft; 6. a fixing plate; 7. rotating the block; 8. a first rotating shaft; 9. a support bar; 901. a second limiting surface; 10. a spring; 11. a fixed block; 1101. a first limiting surface; 12. fixing grooves; 1201. a third limiting surface; 13. a connecting plate; 14. and (4) connecting the blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-6, a motor anti-rotation-blocking device for a lithium electric drill comprises a lithium electric drill body 1, a rubber sleeve 2 is fixedly sleeved on the side wall of a handle of the lithium electric drill body 1, a raised line is arranged on the side wall of the rubber sleeve 2 to prevent hand injury of an operator and prevent slipping during holding, a motor 3 is arranged inside the lithium electric drill body 1, a protective cover 4 is fixedly connected to the side wall of the motor 3, a first rotating shaft 8 is fixedly connected to an output end of the motor 3, the other end of the first rotating shaft 8 penetrates through and is rotatably connected with the side wall of one side of the protective cover 4, a plurality of fixing plates 6 arranged in an array are fixedly connected to the side wall of the first rotating shaft 8, a connecting plate 13 is fixedly connected to the other end of the fixing plate 6, a supporting rod 9 is slidably connected to the side wall of the connecting plate 13 through, and the other end of the supporting rod 9 is fixedly connected with a fixed block 11, the side wall of the fixed block 11 is subjected to fillet treatment, so that the interference between the side wall of the fixed block 11 and the side wall of the fixed groove 12 in the motion process is avoided, the fixed block 11 comprises two first limiting surfaces 1101 which are symmetrically arranged, the side wall of the supporting rod 9 is provided with a second limiting surface 901, the side wall of the round hole is provided with a limiting block, the limiting block is matched with the second limiting surface 901 to ensure that the supporting rod 9 can slide along the round hole without rotating, the side wall of the supporting rod 9 is sleeved with a spring 10, one end of the spring 10 is abutted against the side wall of a connecting plate 13, the other end of the spring 10 is abutted against the side wall of the fixed block 11, the side wall of the protective cover 4 far away from the motor 3 is rotatably connected with a second rotating shaft 5, one end of, the lateral wall of turning block 7 is provided with the second keyway, and first keyway and second keyway pass through half round key connection, are convenient for install and dismantle turning block 7, and the fixed slot 12 that a plurality of arrays set up is seted up to the lateral wall of turning block 7, and the lateral wall of fixed block 11 and fixed slot 12 all passes through rough handling, and increase frictional force improves the torque of second pivot 5, and fixed slot 12 includes the spacing face 1201 of third that two symmetries set up, and fixed slot 12 and the 11 phase-matchs of fixed block.

In the utility model, when the drill bit is blocked, the second rotating shaft 5 can not rotate, at this time, the motor 3 still continues to rotate, the rotation of the motor 3 drives the rotation of the first rotating shaft 8, and further drives the rotation of the fixing plate 6 and the connecting plate 13, so that the first limiting surface 1101 of the fixing block 11 slides on the third limiting surface 1201, the supporting rod 9 slides along the circular hole, and simultaneously the spring 10 is compressed under stress, so that the fixing block 11 is released from the fixing groove 12, and further the first rotating shaft 8 can continue to rotate, the output energy of the motor 3 is continuously conveyed out, the continuous heating of the motor 3 is avoided, when the fixing block 11 is aligned with the adjacent fixing groove 12, the elastic force of the spring 10 enables the supporting rod 9 and the fixing block 11 to move towards the direction close to the fixing groove 12, so that the fixing block 11 collides with the side wall of the fixing groove 12, the generated collision sound prompts a, thereby timely cutting off the power of the electric drill.

Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a lithium electric drill is with motor anti-lock commentaries on classics device, includes lithium electric drill body (1), the inside of lithium electric drill body (1) is provided with motor (3), its characterized in that, the lateral wall fixedly connected with protection casing (4) of motor (3), and the output fixedly connected with first pivot (8) of motor (3), the other end of first pivot (8) runs through one side lateral wall of protection casing (4) and is connected with it is rotated, the lateral wall fixedly connected with fixed plate (6) that a plurality of arrays set up of first pivot (8), the other end fixedly connected with connecting plate (13) of fixed plate (6), the lateral wall of connecting plate (13) has bracing piece (9) through round hole sliding connection, the one end of bracing piece (9) runs through the lateral wall of connecting plate (13) and fixedly connected with connecting block (14), and the other end fixedly connected with fixed block (11) of bracing piece (9), the fixing block (11) comprises two first limiting faces (1101) which are symmetrically arranged, the side wall of the supporting rod (9) is provided with a second limiting face (901), the side wall of the round hole is provided with a limiting block, the limiting block is matched with the second limiting face (901), the side wall of the supporting rod (9) is sleeved with a spring (10), one end of the spring (10) is abutted to the side wall of the connecting plate (13), the other end of the spring (10) is abutted to the side wall of the fixing block (11), the side wall, far away from the motor (3), of the protective cover (4) is rotatably connected with a second rotating shaft (5), one end of the second rotating shaft (5) penetrates through the side wall of the protective cover (4) and is fixedly sleeved with a rotating block (7), the side wall of the rotating block (7) is provided with a plurality of fixing grooves (12) which are arranged in an array manner, each fixing groove (12) comprises two, and the fixing groove (12) is matched with the fixing block (11).

2. The motor anti-rotation-blockage device for the lithium electric drill is characterized in that a rubber sleeve (2) is fixedly sleeved on the side wall of a handle of the lithium electric drill body (1), and convex strips are arranged on the side wall of the rubber sleeve (2).

3. The lithium electric drill motor anti-stalling device according to claim 1, characterized in that the side wall of the fixing block (11) is rounded.

4. The motor anti-rotation-blockage device for the lithium electric drill is characterized in that the side walls of the fixing block (11) and the fixing groove (12) are subjected to rough treatment.

5. The lithium electric drill motor anti-stalling device according to claim 1, characterized in that a first key groove is formed in the side wall of the second rotating shaft (5), a second key groove is formed in the side wall of the rotating block (7), and the first key groove and the second key groove are connected through a semicircular key.