Motor outer rotor locking device and locking method thereof

Abstract

The present invention relates to a motor outer rotor locking device and a locking method thereof, comprising a front pressure plate, an outer rotor connecting cover, a rear pressure plate, an electromagnet, and a rotating plate; the electromagnet is provided with a through hole and a circular electromagnet coil mounting groove, the through hole is located in the center of the electromagnet, and the circular electromagnet coil mounting groove is located on the electromagnet between the through hole and the outer circular wall of the electromagnet; an electromagnet coil is mounted and fixed in the circular electromagnet coil mounting groove; a plurality of spring mounting blind holes are provided on the electromagnet between the circular electromagnet coil mounting groove and the outer circular wall of the electromagnet, a spring is placed in each spring mounting blind hole, and when the spring is reset, one end of the spring is placed in the spring mounting blind hole, and the other end extends out of the spring mounting blind hole; the present invention provides a motor outer rotor locking device and a locking method thereof, which facilitates the control of whether the motor outer rotor can rotate or not, and has great market application and promotion value.

Description

Technical Field

[0001] The invention relates to a motor outer rotor locking device and a locking method thereof, belonging to the technical field of motor outer rotor locking devices. Background Art

[0002] When not in use, an outer rotor motor is often required to remain stationary. However, existing outer rotor motors can still rotate under external forces when not in use. This often causes problems when using such motors. For example, an outer rotor motor mounted on an electric wheelchair wheel has a tire mounted on the outer rotor. Even when the outer rotor motor is not in use, the rotation of the tire can still drive the outer rotor to rotate. This means that when the outer rotor motor is stopped, the outer rotor cannot prevent the tire from rotating. Therefore, limiting the rotation of the outer rotor when the outer rotor motor is stopped is a key issue. A device is needed that can prevent the outer rotor of an outer rotor motor from rotating when not in use, thereby facilitating locking of the outer rotor. Summary of the Invention

[0003] The purpose of the present invention is to address the problems existing in the prior art and to provide a motor outer rotor locking device that has a reasonable and simple structure, is easy to manufacture, and is convenient to use.

[0004] The object of the present invention is achieved as follows: a motor outer rotor locking device and a locking method thereof, characterized by comprising: a front pressure plate, an outer rotor connecting cover, a rear pressure plate, an electromagnet, and a rotating plate;

[0005] The electromagnet is provided with a through hole and a circular electromagnet coil mounting groove, the through hole is located in the center of the electromagnet, and the circular electromagnet coil mounting groove is located on the electromagnet between the through hole and the outer circular wall of the electromagnet; the electromagnet coil is mounted and fixed in the circular electromagnet coil mounting groove;

[0006] A plurality of spring mounting blind holes are provided on the electromagnet between the annular electromagnet coil mounting groove and the outer circular wall of the electromagnet, and a spring is placed in each spring mounting blind hole. When the spring is reset, one end of the spring is placed in the spring mounting blind hole and the other end extends out of the spring mounting blind hole;

[0007] A protruding column is provided at the center of the rotating plate, and a rotating plate through-hole is provided at the center of the protruding column, which passes through the protruding column and the rotating plate; an adjustment plate, an annular baffle, and a retaining spring are sequentially sleeved on the protruding column, and an end of the protruding column extending outward from the retaining spring is provided with an outwardly curved burr; the adjustment plate is confined between the rotating plate and the annular baffle, and a circular hole is provided at the center of the adjustment plate for sleeved on the protruding column, and the adjustment plate is rotatable on the protruding column;

[0008] The electromagnet is provided with a plurality of mounting seat pull rod holes, and the rotating plate is provided with a rotating plate pull rod hole corresponding to the plurality of mounting seat pull rod holes near the outer circle;

[0009] The center of the rear pressure plate is provided with a rear pressure plate through hole, and the rear pressure plate is also provided with a rear pressure plate pull rod hole;

[0010] The side of the rotating plate facing away from the raised column contacts the electromagnet; a tightening bolt is also provided, which passes through the rotating plate pull rod hole, the mounting seat pull rod hole, and the rear pressure plate pull rod hole in sequence, and a nut is screwed on one end of the tightening bolt that passes through the rear pressure plate pull rod hole; so that the electromagnet is restricted between the rear pressure plate and the rotating plate, and the rear pressure plate presses on the end of the spring extending out of the spring mounting blind hole, and the rear pressure plate can move along the tightening bolt;

[0011] The electromagnet is provided with a plurality of silencer and shock-absorbing plate placement grooves, in which silencer and shock-absorbing plates are placed, and the silencer and shock-absorbing plates are limitedly located between the rear pressure plate and the electromagnet;

[0012] The rotating plate is also provided with a ball hole that passes through the rotating plate, a ball is placed in the ball hole, and the ball is limited between the electromagnet and the adjusting plate, and the adjusting plate is provided with a ball-locking hole; when the adjusting plate is rotated, when the ball-locking hole on the adjusting plate is rotated to the ball position, part of the ball is locked in the ball-locking hole, and the rear pressure plate is separated from the electromagnet under the action of the spring reset; when the ball-locking hole on the adjusting plate is misaligned with the ball, the ball presses against the position of the adjusting plate without the ball-locking hole, the rotating plate pulls the tightening bolt, the rear pressure plate squeezes the spring, and fits with the electromagnet;

[0013] The outer rotor connecting cover is placed between the front pressure plate and the rear pressure plate. The outer rotor connecting cover is provided with an outer rotor connecting cover through-hole and a plurality of brake pad placement grooves, and the brake pad placement grooves pass through the outer rotor connecting cover. The outer rotor connecting cover through-hole is located at the center of the outer rotor connecting cover. A brake pad is placed in the brake pad placement groove. The thickness of the brake pad is greater than the groove depth of the brake pad placement groove. Both sides of the brake pad pass through the brake pad placement groove, one side faces the front pressure plate, and the other side faces the rear pressure plate. The outer diameter of the front pressure plate is greater than the inner diameter of the outer rotor connecting cover through-hole. The front pressure plate is fixed to the electromagnet by bolts, and the bolts pass through the outer rotor connecting cover through-hole and the rear pressure plate. The brake pad is limited between the front pressure plate and the rear pressure plate.

[0014] The plurality of spring mounting blind holes are evenly distributed on the electromagnet between the annular electromagnet coil mounting groove and the outer circular wall of the electromagnet.

[0015] The plurality of mounting seat pull rod holes are evenly distributed on the electromagnet between the annular electromagnet coil mounting groove and the outer circular wall of the electromagnet.

[0016] A plurality of mounting seat tie rod holes are distributed at intervals from a plurality of mounting seat tie rod holes.

[0017] The front pressure plate is provided with a front pressure plate fixing through-hole, the rear pressure plate is provided with a rear pressure plate fixing through-hole, and the electromagnet is provided with a mounting seat fixing threaded hole. The bolts pass through the front pressure plate fixing through-hole, the outer rotor connection cover through-hole, the rear pressure plate fixing through-hole and are screwed into the mounting seat fixing threaded hole in sequence, so that the front pressure plate is fixed to the electromagnet by the bolts.

[0018] The adjusting plate is provided with a wrench or a plurality of clamping holes for facilitating the rotation of the adjusting plate.

[0019] The electromagnet coil is connected to an external power source via an electric wire, and is connected to the external power source via a power switch, and the electromagnet coil is energized and de-energized via the power switch.

[0020] In the present invention, the brake pad is a flexible brake pad, which plays a role in shock absorption and noise reduction; the flexible brake pad and the noise-absorbing and shock-absorbing pad are both made of rubber material.

[0021] A method for locking a motor outer rotor using a motor outer rotor locking device is characterized in that the method includes the following two methods:

[0022] Method 1 includes the following steps:

[0023] Step 1-1) Fix the outer rotor connection cover to the outer rotor of the motor; rotate the adjustment plate to move the ball-locking hole on the adjustment plate to the ball position. The ball is partially locked in the ball-locking hole. Under the action of the spring return of the rear pressure plate, the rear pressure plate separates from the electromagnet and moves toward the front pressure plate. The front and rear pressure plates clamp the brake pads on the outer rotor connection cover. The outer rotor connection cover cannot rotate and is in a locked state.

[0024] In steps 1-2, the electromagnet is energized, generating magnetism, thereby attracting the rear pressure plate to the electromagnet. The rear pressure plate compresses the spring and fits with the electromagnet. The rear pressure plate releases the pressure on the brake pad on the outer rotor connection cover, allowing the outer rotor connection cover to rotate, thereby unlocking the motor's outer rotor and allowing it to rotate.

[0025] Steps 1-3) When the motor outer rotor needs to be locked and not rotated, the electromagnet is powered off and loses its magnetism. At this time, the rear pressure plate is separated from the electromagnet under the action of the spring reset, and the rear pressure plate moves toward the front pressure plate. The front and rear pressure plates clamp the brake pads on the outer rotor connection cover. The outer rotor connection cover cannot rotate and is in a locked state. The motor outer rotor cannot rotate;

[0026] Method 2 includes the following steps:

[0027] Step 2-1) Fix the outer rotor connection cover to the outer rotor of the motor; rotate the adjustment plate to move the ball-locking hole on the adjustment plate to the ball position. The ball is partially locked in the ball-locking hole. Under the action of the spring return of the rear pressure plate, the rear pressure plate separates from the electromagnet and moves toward the front pressure plate. The front and rear pressure plates clamp the brake pads on the outer rotor connection cover. The outer rotor connection cover cannot rotate and is in a locked state.

[0028] Step 2-2) Rotate the adjustment plate to align the ball-locking hole on the adjustment plate with the ball. The ball is pressed against the position of the adjustment plate where there is no ball-locking hole. Turn the plate to pull the tension bolt. The rear pressure plate squeezes the spring and fits with the electromagnet. The rear pressure plate releases the pressure on the brake pad on the outer rotor connection cover. The outer rotor connection cover can rotate, thereby unlocking the motor's outer rotor and allowing it to rotate.

[0029] Steps 2-3) When the outer rotor of the motor needs to be locked and not rotated, rotate the adjustment plate, and the ball-locking hole on the adjustment plate moves to the ball position. The ball is partially locked in the ball-locking hole. Under the action of the spring return, the rear pressure plate separates from the electromagnet and moves toward the front pressure plate. The front and rear pressure plates clamp the brake pads on the outer rotor connecting cover. The outer rotor connecting cover cannot rotate and is in a locked state. The outer rotor of the motor cannot rotate.

[0030] In step 1-1), the outer rotor connecting cover is fixedly connected to the outer rotor of the motor by tightening bolts;

[0031] In step 2-1), the outer rotor connecting cover is fixedly connected to the outer rotor of the motor by tightening bolts.

[0032] The method of the present invention is advanced and scientific. Through the present invention, a motor outer rotor locking device and a locking method thereof are provided. When in use, the outer rotor connecting cover is fixed to the outer rotor of the motor. When there is no electricity, it can be locked or opened mechanically. The adjusting plate is rotated to turn the ball-clamping hole on the adjusting plate to the ball position. Part of the ball is clamped in the ball-clamping hole. Under the action of the spring reset, the rear pressure plate is separated from the electromagnet and the rear pressure plate moves toward the front pressure plate. The front and rear pressure plates clamp the brake pads on the outer rotor connecting cover, and the outer rotor connecting cover cannot rotate and is in a locked state; when the ball-clamping hole on the adjusting plate is misaligned with the ball, the ball presses against the position of the adjusting plate without the ball-clamping hole, the rotating plate pulls the tightening bolt, the rear pressure plate squeezes the spring, and fits with the electromagnet; the rear pressure plate releases the squeezing of the brake pads on the outer rotor connecting cover, and the outer rotor connecting cover can be rotated, thereby realizing unlocking the motor outer rotor and allowing the motor outer rotor to rotate. When there is electricity, the method that can be used is: rotating the adjustment plate, turning the ball-locking hole on the adjustment plate to the ball position, partially locking the ball in the ball-locking hole, and under the action of the spring reset, the rear pressure plate is separated from the electromagnet, and the rear pressure plate moves toward the front pressure plate, and the front and rear pressure plates clamp the brake pads on the outer rotor connection cover, and the outer rotor connection cover cannot rotate and is in a locked state; when the electromagnet is energized, the electromagnet generates magnetism, thereby attracting the rear pressure plate to the electromagnet, and the rear pressure plate squeezes the spring and fits with the electromagnet; the rear pressure plate releases the pressure on the brake pads on the outer rotor connection cover, and the outer rotor connection cover can rotate, thereby unlocking the motor outer rotor, and the motor outer rotor can rotate. The present invention facilitates locking or closing the outer rotor of the motor.

[0033] In the present invention, a plurality of silencer and shock-absorbing plate placement grooves are provided on the electromagnet, and silencer and shock-absorbing plates are placed in the silencer and shock-absorbing plate placement grooves. The silencer and shock-absorbing plates are limitedly located between the rear pressure plate and the electromagnet; through the silencer and shock-absorbing plates, the rear pressure plate and the electromagnet have a shock-absorbing and buffering effect when they contact, thereby avoiding the direct and harsh contact between the rear pressure plate and the electromagnet causing large noise.

[0034] A brake pad placement groove is provided on the outer rotor connection cover, and a brake pad is placed in the brake pad placement groove. The brake pad is limited between the front pressure plate and the rear pressure plate. By setting the brake pad, the brake pad can be a flexible brake pad to play a shock-absorbing and noise-reducing role.

[0035] By arranging the silencer and the damping sheet and the flexible brake sheet, the overall device of the present invention can achieve a silencer effect when in use. In addition, in the present invention, a wrench or a plurality of clamping holes for convenient rotation are provided on the adjustment plate, which is conducive to the operation of the adjustment plate.

[0036] The present invention provides a motor outer rotor locking device and a locking method thereof, which facilitates the control of whether the motor outer rotor can rotate or not, and has great market application and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 Schematic diagram of the structure of the transfer plate part of the present invention (when the ball and the ball-locking hole are misaligned);

[0039] Figure 3 Schematic diagram of the structure of the transfer plate part of the present invention (when the spherical part is placed in the ball-locking hole);

[0040] In the figure: 1 front pressure plate, 1-1 front pressure plate fixing through-hole, 2 outer rotor connecting cover, 2-1 outer rotor connecting cover through-hole, 2-2 brake pad placement groove, 2-3 brake pad, 3 rear pressure plate, 3-1 rear pressure plate through-hole, 3-2 rear pressure plate pull rod hole, 3-3 rear pressure plate fixing through-hole, 4 electromagnet, 4-1 through-hole, 4-2 annular electromagnet coil mounting groove, 4-3 electromagnet coil, 4-4 spring mounting blind hole, 4-5 spring, 4-6 mounting seat pull rod hole, 4-7 silencer and shock absorber placement groove, 4-8 silencer and shock absorber, 5 rotating plate, 5-1 raised column, 5-2 rotating plate through-hole, 5-3 adjusting plate, 5-4 annular baffle, 5-5 retaining spring, 5-6 rotating plate pull rod hole, 5-7 ball hole, 5-8 ball, 5-9 ball retaining hole, 6 tightening bolt, 7 nut. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] A motor outer rotor locking device comprises a front pressure plate 1, an outer rotor connecting cover 2, a rear pressure plate 3, an electromagnet 4, and a rotating plate 5.

[0043] A through hole 4-1 and a circular electromagnet coil mounting groove 4-2 are provided on the electromagnet 4. The through hole 4-1 is located at the center of the electromagnet 4, and the circular electromagnet coil mounting groove 4-2 is located on the electromagnet 4 between the through hole 4-1 and the outer circular wall of the electromagnet 4; the electromagnet 4-3 coil is installed and fixed in the circular electromagnet coil mounting groove 4-2.

[0044] A plurality of spring mounting blind holes 4-4 are provided on the electromagnet 4 between the annular electromagnet coil mounting groove 4-2 and the outer circular wall of the electromagnet 4. A spring 4-5 is placed in each spring mounting blind hole 4-4. When the spring 4-5 is reset, one end of the spring 4-5 is placed in the spring mounting blind hole 4-4 and the other end extends out of the spring mounting blind hole 4-4.

[0045] A raised column 5-1 is provided at the center of the rotating plate 5, and a rotating plate through hole 5-2 is provided at the center of the raised column 5-1, which passes through the raised column 5-1 and the rotating plate 5; an adjusting plate 5-3, an annular baffle 5-4, and a retaining spring 5-5 are sequentially sleeved on the raised column 5-1, and an outwardly curved burr is provided at the end of the raised column 5-1 extending out of the retaining spring 5-5, the adjusting plate 5-3 is limited between the rotating plate 5 and the annular baffle 5-4, and a circular hole for sleeved on the raised column 5-1 is provided at the center of the adjusting plate 5-3, and the adjusting plate 5-3 is rotatable on the raised column 5-1.

[0046] A plurality of mounting seat pull rod holes 4-6 are provided on the electromagnet 4, and a rotating plate pull rod hole 5-6 corresponding to the plurality of mounting seat pull rod holes 4-6 is provided near the outer circle of the rotating plate 5.

[0047] A rear pressing plate through hole 3-1 is provided at the center of the rear pressing plate 3, and a rear pressing plate pull rod hole 3-2 is also provided on the rear pressing plate 3;

[0048] The side of the rotating plate 5 facing away from the raised column 5-1 is in contact with the electromagnet 4; a tightening bolt 6 is also provided, which passes through the rotating plate pull rod hole 5-6, the mounting seat pull rod hole 4-6, and the rear pressure plate pull rod hole 3-2 in sequence, and a nut 7 is screwed on one end of the tightening bolt 6 that passes through the rear pressure plate pull rod hole 3-2; so that the electromagnet 4 is restricted between the rear pressure plate 3 and the rotating plate 5, and the rear pressure plate 3 is pressed on the end of the spring 4-5 that extends out of the spring mounting blind hole 4-4, and the rear pressure plate 3 can move along the tightening bolt 6.

[0049] A plurality of silencer and shock-absorbing plate placement grooves 4-7 are provided on the electromagnet 4, and silencer and shock-absorbing plates 4-8 are placed in the silencer and shock-absorbing plate placement grooves 4-7. The silencer and shock-absorbing plates 4-8 are limitedly located between the rear pressure plate 3 and the electromagnet 4.

[0050] A spherical hole 5-7 is also provided on the rotating plate 5, which passes through the rotating plate 5. A sphere 5-8 is placed in the spherical hole 5-7, and the sphere 5-8 is limited between the electromagnet 4 and the adjusting plate 5-3. A ball-locking hole 5-9 is provided on the adjusting plate 5-3. When the adjusting plate 5-3 is rotated, when the ball-locking hole 5-9 on the adjusting plate 5-3 is rotated to the position of the ball 5-8, part of the ball 5-8 is stuck in the ball-locking hole 5-9, and the rear pressure plate 3 is separated from the electromagnet 4 under the action of the spring 4-5 returning. When the ball-locking hole 5-9 on the adjusting plate 5-3 is misaligned with the ball 5-8, the ball 5-8 rests against the position of the adjusting plate 5-3 where there is no ball-locking hole 5-9, the rotating plate 5 pulls the tightening bolt 6, the rear pressure plate 3 squeezes the spring 4-5, and fits with the electromagnet 4.

[0051] The outer rotor connecting cover 2 is placed between the front pressure plate 1 and the rear pressure plate 3. The outer rotor connecting cover 2 is provided with an outer rotor connecting cover through-hole 2-1 and several brake pad placement grooves 2-2, and the brake pad placement grooves 2-2 pass through the outer rotor connecting cover 2. The outer rotor connecting cover through-hole 2-1 is located at the center of the outer rotor connecting cover 2. A brake pad 2-3 is placed in the brake pad placement groove 2-2. The thickness of the brake pad 2-3 is greater than the groove depth of the brake pad placement groove 2-2. The two side surfaces of the brake pad 2-3 pass through the brake pad placement groove 2-2, one side faces the front pressure plate 1, and the other side faces the rear pressure plate 3. The outer diameter of the front pressure plate 1 is greater than the inner diameter of the outer rotor connecting cover through-hole 2-1. The front pressure plate 1 is fixed by a bolt electromagnet 4, and the bolt passes through the outer rotor connecting cover through-hole 2-1 and the rear pressure plate 3. The brake pad 2-3 is limited between the front pressure plate 1 and the rear pressure plate 3.

[0052] Furthermore, a plurality of spring mounting blind holes 4-4 are evenly distributed on the electromagnet 4 between the annular electromagnet coil mounting groove 4-2 and the outer wall of the electromagnet 4. A plurality of mounting base tie rod holes 4-6 are evenly distributed on the electromagnet 4 between the annular electromagnet coil mounting groove 4-2 and the outer wall of the electromagnet 4. In this way, the device is made more stable.

[0053] In addition, during the design, a plurality of mounting seat tie rod holes 4-6 are spaced apart from a plurality of mounting seat tie rod holes 4-6.

[0054] A front pressure plate fixing through-hole 1-1 is provided on the front pressure plate 1, a rear pressure plate fixing through-hole 3-3 is provided on the rear pressure plate 3, and a mounting base fixing threaded hole is provided on the electromagnet 4. Bolts are sequentially passed through the front pressure plate fixing through-hole 1-1, the outer rotor connection cover through-hole 2-1, and the rear pressure plate fixing through-hole 3-3 and screwed into the mounting base fixing threaded hole, thereby securing the front pressure plate 1 to the electromagnet 4 via the bolts. To facilitate rotation of the adjustment plate 5-3, a wrench or several locking holes for convenient rotation are provided on the adjustment plate 5-3.

[0055] There are two methods to use:

[0056] Method 1 includes the following steps:

[0057] Step 1-1), fix the outer rotor connection cover 2 on the outer rotor of the motor; rotate the adjustment plate 5-3, turn the ball-locking hole 5-9 on the adjustment plate 5-3 to the position of the ball 5-8, and partially lock the ball 5-8 in the ball-locking hole 5-9. Under the action of the spring 4-5 to reset the rear pressure plate 3, the rear pressure plate 3 is separated from the electromagnet 4, and the rear pressure plate 3 moves toward the front pressure plate 1. The front pressure plate 1 and the rear pressure plate 3 clamp the brake pads 2-3 on the outer rotor connection cover 2, and the outer rotor connection cover 2 cannot rotate and is in a locked state;

[0058] In step 1-2, the electromagnet coil 4-3 is energized, and the electromagnet 4 generates magnetism, thereby attracting the rear pressure plate 3 to the electromagnet 4. The rear pressure plate 3 squeezes the spring 4-5 and fits with the electromagnet 4; the rear pressure plate 3 releases the pressure on the brake pad 2-3 on the outer rotor connecting cover 2, and the outer rotor connecting cover 2 can rotate, thereby unlocking the outer rotor of the motor, and the outer rotor of the motor can rotate;

[0059] Steps 1-3), when the outer rotor of the motor needs to be locked and not rotated, the electromagnet coil 4-3 is powered off, and the electromagnet 4 loses its magnetism. At this time, the rear pressure plate 3 is separated from the electromagnet 4 under the action of the spring 4-5 returning to its original position, and the rear pressure plate 3 moves toward the front pressure plate 1. The front pressure plate 1 and the rear pressure plate 3 clamp the brake pads 2-3 on the outer rotor connecting cover 2. The outer rotor connecting cover 2 cannot rotate and is in a locked state. The outer rotor of the motor cannot rotate;

[0060] Method 2 includes the following steps:

[0061] Step 2-1), fix the outer rotor connection cover 2 on the outer rotor of the motor; rotate the adjustment plate 5-3, turn the ball-locking hole 5-9 on the adjustment plate 5-3 to the position of the ball 5-8, and partially lock the ball 5-8 in the ball-locking hole 5-9. Under the action of the spring 4-5 to reset the rear pressure plate 3, the rear pressure plate 3 is separated from the electromagnet 4, and the rear pressure plate 3 moves toward the front pressure plate 1. The front pressure plate 1 and the rear pressure plate 3 clamp the brake pads 2-3 on the outer rotor connection cover 2, and the outer rotor connection cover 2 cannot rotate and is in a locked state;

[0062] Step 2-2), rotate the adjustment plate 5-3, misalign the ball-locking hole 5-9 on the adjustment plate 5-3 with the ball 5-8, and press the ball 5-8 against the position of the adjustment plate 5-3 where there is no ball-locking hole 5-9. The rotating plate 5 pulls the tightening bolt 6, and the rear pressure plate 3 squeezes the spring 4-5 and fits with the electromagnet 4; the rear pressure plate 3 releases the pressure on the brake pad 2-3 on the outer rotor connecting cover 2, and the outer rotor connecting cover 2 can rotate, thereby unlocking the outer rotor of the motor, and the outer rotor of the motor can rotate;

[0063] Step 2-3), when the outer rotor of the motor needs to be locked and not rotated, rotate the adjustment plate 5-3, and the ball hole 5-9 on the adjustment plate 5-3 is rotated to the position of the ball 5-8. Part of the ball 5-8 is stuck in the ball hole 5-9. Under the action of the spring 4-5 returning the rear pressure plate 3, the rear pressure plate 3 is separated from the electromagnet 4, and the rear pressure plate 3 moves toward the front pressure plate 1. The front pressure plate 1 and the rear pressure plate 3 clamp the brake pads 2-3 on the outer rotor connecting cover 2. The outer rotor connecting cover 2 cannot rotate and is in a locked state. The outer rotor of the motor cannot rotate.

[0064] Furthermore, in step 1-1), the outer rotor connection cover 2 is fixedly connected to the outer rotor of the motor by tightening bolts; in step 2-1), the outer rotor connection cover 2 is fixedly connected to the outer rotor of the motor by tightening bolts.

[0065] When in use, the electromagnet coil 4 - 3 is connected to an external power source through an electric wire, and can be connected to an external power source through a power switch, and the electromagnet coil 4 - 3 is energized and deenergized through the power switch.

[0066] In the present invention, the brake pads 2-3 are flexible brake pads, which play a role in shock absorption and noise reduction; the flexible brake pads 2-3 and the noise-absorbing and shock-absorbing pads 4-8 are all made of rubber material.

Claims

1. A motor outer rotor locking device, characterized by: It includes a front pressure plate (1), an outer rotor connecting cover (2), a rear pressure plate (3), an electromagnet (4), and a rotating plate (5); The electromagnet (4) is provided with a through hole (4-1) and a circular electromagnet coil mounting groove (4-2), the through hole (4-1) is located at the center of the electromagnet (4), and the circular electromagnet coil mounting groove (4-2) is located on the electromagnet (4) between the through hole (4-1) and the outer circular wall of the electromagnet (4); an electromagnet coil (4-3) is mounted and fixed in the circular electromagnet coil mounting groove (4-2); A plurality of spring mounting blind holes (4-4) are provided on the electromagnet (4) between the annular electromagnet coil mounting groove (4-2) and the outer circular wall of the electromagnet (4), a spring (4-5) being placed in each spring mounting blind hole (4-4), and when the spring (4-5) is reset, one end of the spring (4-5) is placed in the spring mounting blind hole (4-4) and the other end extends out of the spring mounting blind hole (4-4); The rotating plate (5) is provided with a protruding column (5-1) at the center, and a rotating plate through-hole (5-2) penetrating the protruding column (5-1) and the rotating plate (5) is provided at the center of the protruding column (5-1); an adjusting plate (5-3), an annular baffle (5-4), and a retaining spring (5-5) are sequentially sleeved on the protruding column (5-1), and an end of the protruding column (5-1) extending outward from the retaining spring (5-5) is provided with a burr curved outward, the adjusting plate (5-3) is limited between the rotating plate (5) and the annular baffle (5-4), and a circular hole for sleeved on the protruding column (5-1) is provided at the center of the adjusting plate (5-3), and the adjusting plate (5-3) is rotatable on the protruding column (5-1); The electromagnet (4) is provided with a plurality of mounting seat pull rod holes (4-6), and the rotating plate (5) is provided with rotating plate pull rod holes (5-6) corresponding to the plurality of mounting seat pull rod holes (4-6) near the outer circle. A rear pressure plate through hole (3-1) is provided at the center of the rear pressure plate (3), and a rear pressure plate pull rod hole (3-2) is also provided on the rear pressure plate (3); The rotating plate (5) contacts the electromagnet (4) on one side facing away from the raised column (5-1); a tensioning bolt (6) is also provided, and the tensioning bolt (6) passes through the rotating plate pull rod hole (5-6), the mounting seat pull rod hole (4-6), and the rear pressure plate pull rod hole (3-2) in sequence, and a nut (7) is screwed on one end of the tensioning bolt (6) passing through the rear pressure plate pull rod hole (3-2); so that the electromagnet (4) is restricted between the rear pressure plate (3) and the rotating plate (5), and the rear pressure plate (3) presses on one end of the spring (4-5) extending out of the spring mounting blind hole (4-4), and the rear pressure plate (3) can move along the tensioning bolt (6); The electromagnet (4) is provided with a plurality of silencer and shock-absorbing plate placement grooves (4-7), a silencer and shock-absorbing plate (4-8) is placed in the silencer and shock-absorbing plate placement grooves (4-7), and the silencer and shock-absorbing plate (4-8) is limited between the rear pressure plate (3) and the electromagnet (4); The rotating plate (5) is further provided with a spherical hole (5-7) penetrating the rotating plate (5), a spherical ball (5-8) is placed in the spherical hole (5-7), and the spherical ball (5-8) is limited between the electromagnet (4) and the adjusting plate (5-3), and the adjusting plate (5-3) is provided with a ball-locking hole (5-9); when the adjusting plate (5-3) is rotated, when the ball-locking hole (5-9) on the adjusting plate (5-3) is rotated to the position of the spherical ball (5-8), part of the spherical ball (5-8) is locked. In the ball-locking hole (5-9), the rear pressure plate (3) is separated from the electromagnet (4) under the action of the spring (4-5) returning to its original position; when the ball-locking hole (5-9) on the adjustment plate (5-3) is misaligned with the ball (5-8), the ball (5-8) abuts against the position of the adjustment plate (5-3) where there is no ball-locking hole (5-9), the rotating plate (5) pulls the tightening bolt (6), and the rear pressure plate (3) squeezes the spring (4-5) and fits with the electromagnet (4); The outer rotor connection cover (2) is placed between the front pressure plate (1) and the rear pressure plate (3); the outer rotor connection cover (2) is provided with an outer rotor connection cover through-hole (2-1) and a plurality of brake pad placement grooves (2-2); the brake pad placement grooves (2-2) penetrate the outer rotor connection cover (2); the outer rotor connection cover through-hole (2-1) is located at the center of the outer rotor connection cover (2); a brake pad (2-3) is placed in the brake pad placement groove (2-2); the thickness of the brake pad (2-3) is greater than the thickness of the brake pad placement groove (2-2); The groove depth of the placement groove (2-2) is such that two sides of the brake pad (2-3) extend out of the brake pad placement groove (2-2), one side faces the front pressure plate (1), and the other side faces the rear pressure plate (3). The outer diameter of the front pressure plate (1) is larger than the inner diameter of the through hole (2-1) of the outer rotor connection cover. The front pressure plate (1) is fixed to the electromagnet (4) by bolts, and the bolts pass through the through hole (2-1) of the outer rotor connection cover and the rear pressure plate (3). The brake pad (2-3) is limited between the front pressure plate (1) and the rear pressure plate (3).

2. The motor outer rotor locking device according to claim 1, characterized in that: The plurality of spring mounting blind holes (4-4) are evenly distributed on the electromagnet (4) between the annular electromagnet coil mounting groove (4-2) and the outer circular wall of the electromagnet (4).

3. The motor outer rotor locking device according to claim 1, characterized in that: The plurality of mounting seat pull rod holes (4-6) are evenly distributed on the electromagnet (4) between the annular electromagnet coil mounting groove (4-2) and the outer circular wall of the electromagnet (4).

4. The motor outer rotor locking device according to claim 1, characterized in that: The front pressure plate (1) is provided with a front pressure plate fixing through hole (1-1), the rear pressure plate (3) is provided with a rear pressure plate fixing through hole (3-3), and the electromagnet (4) is provided with a mounting seat fixing threaded hole. Bolts pass through the front pressure plate fixing through hole (1-1), the outer rotor connection cover through hole (2-1), and the rear pressure plate fixing through hole (3-3) in sequence and are screwed into the mounting seat fixing threaded hole, so that the front pressure plate (1) is fixed to the rear pressure plate (3) and the electromagnet (4) through the bolts.

5. The motor outer rotor locking device according to claim 1, characterized in that: The adjusting plate (5-3) is provided with a wrench or a plurality of clamping holes for facilitating the rotation of the adjusting plate (5-3).

6. The motor outer rotor locking device according to claim 1, characterized in that: The electromagnet coil (4-3) is connected to an external power source via an electric wire, and is connected to the external power source via a power switch, and the electromagnet coil (4-3) is energized and de-energized via the power switch.

7. The motor outer rotor locking device according to claim 1, characterized in that: The brake pads (2-3) are flexible brake pads that play a role in shock absorption and noise reduction; The flexible brake pads (2-3) and the noise-absorbing and shock-absorbing pads (4-8) are all made of rubber material.

8. A method for locking a motor outer rotor using a motor outer rotor locking device according to any one of claims 1 to 7, characterized in that: There are two types: Method 1 includes the following steps: Step 1-1), fix the outer rotor connecting cover (2) on the outer rotor of the motor; rotate the adjustment plate (5-3), turn the ball-locking hole (5-9) on the adjustment plate (5-3) to the position of the ball (5-8), and part of the ball (5-8) is locked in the ball-locking hole (5-9). Under the action of the spring (4-5) resetting, the rear pressure plate (3) is separated from the electromagnet (4), and the rear pressure plate (3) moves toward the front pressure plate (1). The front pressure plate (1) and the rear pressure plate (3) clamp the brake pad (2-3) on the outer rotor connecting cover (2), and the outer rotor connecting cover (2) cannot rotate and is in a locked state; Step 1-2), the electromagnet coil (4-3) is energized, and the electromagnet (4) generates magnetism, thereby attracting the rear pressure plate (3) to the electromagnet (4), and the rear pressure plate (3) squeezes the spring (4-5) and fits with the electromagnet (4); the rear pressure plate (3) releases and squeezes the brake pad (2-3) on the outer rotor connection cover (2), and the outer rotor connection cover (2) can rotate, thereby unlocking the motor outer rotor, and the motor outer rotor can rotate; Steps 1-3), when the outer rotor of the motor needs to be locked and not rotated, the electromagnet coil (4-3) is powered off, and the electromagnet (4) loses its magnetism. At this time, the rear pressure plate (3) is reset by the spring (4-5), and the rear pressure plate (3) is separated from the electromagnet (4). The rear pressure plate (3) moves toward the front pressure plate (1). The front pressure plate (1) and the rear pressure plate (3) clamp the brake pad (2-3) on the outer rotor connecting cover (2). The outer rotor connecting cover (2) cannot rotate and is in a locked state. The outer rotor of the motor cannot rotate; Method 2 includes the following steps: Step 2-1), fix the outer rotor connecting cover (2) on the outer rotor of the motor; rotate the adjustment plate (5-3), turn the ball-locking hole (5-9) on the adjustment plate (5-3) to the position of the ball (5-8), and part of the ball (5-8) is locked in the ball-locking hole (5-9). Under the action of the spring (4-5) resetting, the rear pressure plate (3) is separated from the electromagnet (4), and the rear pressure plate (3) moves toward the front pressure plate (1). The front pressure plate (1) and the rear pressure plate (3) clamp the brake pad (2-3) on the outer rotor connecting cover (2), and the outer rotor connecting cover (2) cannot rotate and is in a locked state; Step 2-2), rotate the adjustment plate (5-3), misalign the ball-locking hole (5-9) on the adjustment plate (5-3) with the ball (5-8), and the ball (5-8) is pressed against the position of the adjustment plate (5-3) without the ball-locking hole (5-9). The rotating plate (5) pulls the tensioning bolt (6), and the rear pressure plate (3) squeezes the spring (4-5) and fits with the electromagnet (4); the rear pressure plate (3) releases and squeezes the brake pad (2-3) on the outer rotor connecting cover (2), and the outer rotor connecting cover (2) can rotate, thereby unlocking the outer rotor of the motor, and the outer rotor of the motor can rotate; Step 2-3), when the outer rotor of the motor needs to be locked and not rotated, the adjusting plate (5-3) is rotated, and the ball hole (5-9) on the adjusting plate (5-3) is rotated to the position of the ball (5-8), and part of the ball (5-8) is stuck in the ball hole (5-9). Under the action of the spring (4-5) resetting, the rear pressure plate (3) is separated from the electromagnet (4), and the rear pressure plate (3) moves toward the front pressure plate (1). The front pressure plate (1) and the rear pressure plate (3) clamp the brake pad (2-3) on the outer rotor connecting cover (2). The outer rotor connecting cover (2) cannot rotate and is in a locked state. The outer rotor of the motor cannot rotate.

9. The method according to claim 8, wherein: In step 1-1), the outer rotor connection cover (2) is fixedly connected to the outer rotor of the motor by screwing bolts; in step 2-1), the outer rotor connection cover (2) is fixedly connected to the outer rotor of the motor by screwing bolts.

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