Novel permanent magnet brushless direct current motor

Abstract

The utility model relates to the technical field of brushless direct current motors, and discloses a novel permanent magnet brushless direct current motor which comprises a shell, and a brake mechanism is fixedly installed on the side face of the shell. The brake mechanism comprises a mounting block, and an electromagnet is fixedly mounted on the side face of the mounting block. When the transmission rod needs to be braked, the power-on state of the magnetic pole of the permanent magnet is cut off through the control module, the current direction of the coil is changed through the control module, the coil is powered on to enable the magnetic pole of the electromagnet to be the same as the close end of the permanent magnet, and the permanent magnet connecting block and the rubber brake block are pushed to move according to attraction of unlike poles and repulsion of like poles. When braking is not needed, the direction of current is changed through a commutator, so that the magnetic pole of the electromagnet is turned over, the permanent magnet is attracted to the end face of the electromagnet, effective braking of the motor can be achieved, and the control effect of the motor is improved. The application range of the motor is expanded, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a brushless DC motor technical field, concretely to a novel permanent magnet brushless DC motor. BACKGROUND

[0002] The brushless DC motor is composed of a motor body and a driver, and is a typical mechatronic product. The brushless motor refers to a motor without a brush and a commutator (or a collector ring), and is also called a commutatorless motor. As early as the birth of the motor in the nineteenth century, the practical motor produced was in the form of a brushless motor, i.e. an alternating current squirrel cage asynchronous motor, which has been widely applied. However, the asynchronous motor has many defects that cannot be overcome, so that the motor technology develops slowly. In the middle of the last century, transistors were born, so the brushless DC motor using a transistor commutation circuit to replace the brush and commutator was born.

[0003] A brushless DC motor is provided in Chinese patent with publication number CN208272775U, comprising a through hole, a mounting seat, a connecting piece, a truss, a connecting plate, a side baffle, a groove, a cover plate, a wire clamp, a fixed plate, and a support platform. The support platform and the side baffle are integrated, the through hole is embedded in the mounting seat, and the mounting seat and the connecting plate are integrated. The utility model discloses a brushless DC motor, which firstly sets a compression spring below the moving plate to lift the moving plate upward in the non-use state. When it is necessary to connect the lead wire or remove the lead wire, the pressing plate is pressed down by hand to drive the moving plate to move downward through the transition plate and the conductive plate, so that the gap between the moving plate and the clamping plate is leaked. The lead wire can be removed or fixed in the moving plate and the clamping plate. After fixing, the pressing plate is released, the compression spring lifts the moving plate, and the lead wire is fixed between the moving plate and the clamping plate. The lead wire can be quickly connected and the operation is simple.

[0004] Although the device is provided with a driving mechanism to provide power support for the device, the motor needs to be braked at a specific time during use. Traditional motors mostly use electromagnetic holding brakes, but the electromagnetic holding brake device is large and has a limited service life. After long-term use, the magnet loss leads to poor braking effect.

[0005] Therefore, it is necessary to provide a novel permanent magnet brushless DC motor. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a novel permanent magnet brushless DC motor to solve the problem that traditional motors mostly use electromagnetic holding brakes, but the electromagnetic holding brake device is large and has a limited service life, and the magnet loss leads to poor braking effect after long-term use.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: A novel permanent -magnet brushless DC motor, including the shell, the shell side fixed mounting has the brake mechanism, the brake mechanism includes the mounting block, the mounting block side fixed mounting has the electromagnet, the electromagnet side fixed mounting has the limit frame, the limit frame side surface and shell end surface fixed connection, the shell end surface and the mounting block side fixed connection, the shell side fixed mounting has the commutator, the commutator end surface fixed mounting has the coil, the coil is wrapped in the electromagnet side, the shell side fixed mounting has the sliding frame.

[0008] Preferably, the sliding frame inner wall is slidably installed with a permanent magnet, the permanent magnet end surface is fixedly installed with a connecting block, and the connecting block side is fixedly installed with a rubber brake block.

[0009] Preferably, the shell side is fixedly installed with a base, the base side is fixedly installed with a control module, and the shell end surface is fixedly installed with a side cover.

[0010] Preferably, the side cover side is fixedly provided with a mounting groove, the mounting groove side is fixedly installed with a bearing seat, the mounting groove inner wall is slidably installed with a mounting sleeve, and the mounting sleeve inner wall is fixedly installed with a permanent magnet pole.

[0011] Preferably, the mounting sleeve side is fixedly provided with a through hole, the through hole inner wall is fixedly installed with a first bearing sleeve, the first bearing sleeve inner wall is fixedly installed with an inner stator magnetic pole, and the inner stator magnetic pole end surface is fixedly connected with the bearing seat inner wall.

[0012] Preferably, the inner stator magnetic pole side is fixedly connected with the first bearing sleeve inner wall, and the mounting sleeve side is fixedly installed with a transmission rod.

[0013] Preferably, the shell side is fixedly installed with a protective shell, the shell side is fixedly provided with a through hole, the through hole inner wall is fixedly installed with a second bearing sleeve, the second bearing sleeve inner wall is fixedly connected with the transmission rod side, the protective shell side is fixedly provided with a through hole, the through hole inner wall is fixedly installed with a mounting ring, and the mounting ring inner wall is slidably connected with the transmission rod side.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1) the new type permanent magnet brushless DC motor, when the transmission rod needs to be braked, the energization state of the permanent magnet pole is cut off through the control module, the current direction of the coil is changed through the control module, the coil is energized to make the magnetic pole of the electromagnet and the permanent magnet similar to the same end, according to the principle that opposite sex attracts and same sex repels, the rubber brake block is moved away from the permanent magnet connecting block, the rubber brake block is in extrusion contact with the transmission rod, the movement state of the transmission rod is changed to a static state, when the brake is not needed, the current direction is changed through the commutator to make the magnetic pole of the electromagnet flip, the permanent magnet is adsorbed on the end face of the electromagnet, the effective braking of the motor can be realized, the control effect of the motor is improved, the application range of the motor is expanded, and the practicality is improved.

[0016] 2) the new type permanent magnet brushless DC motor, when the device is installed at the specified position, the permanent magnet pole is further controlled through the control module, at the same time, the inner stator magnetic pole is energized through the Hall sensor installed in the inner wall of the side cover, the relative three groups of coils in the inner stator magnetic pole and the three groups of coils in the permanent magnet pole are correspondingly adjusted in current direction, the permanent magnet pole is driven to rotate, the mounting sleeve is driven to rotate and the transmission rod mounted on the end face of the mounting sleeve is driven to rotate, and the rotation of the mounting sleeve and the transmission rod is adapted through the first bearing sleeve and the second bearing sleeve, so that the rotation efficiency of the motor is improved, the motor speed and power are improved, the application range and practicality of the motor are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 it is a three-dimensional structure schematic view of a new type permanent magnet brushless DC motor in the embodiment of the utility model;

[0018] Figure 2 it is a protective shell section structure schematic view in the embodiment of the utility model;

[0019] Figure 3 it is a brake mechanism structure schematic view in the embodiment of the utility model;

[0020] Figure 4 it is a shell section structure schematic view in the embodiment of the utility model;

[0021] Figure 5 it is a bearing seat structure schematic view in the embodiment of the utility model;

[0022] Figure 6 it is an inner stator magnetic pole structure schematic view in the embodiment of the utility model.

[0023] In the figure: 1, base; 2, control module; 3, shell; 4, brake mechanism; 401, mounting block; 402, limiting frame; 403, electromagnet; 404, sliding frame; 405, permanent magnet; 406, connecting block; 407, rubber brake block; 408, commutator; 409, coil; 5, protective shell; 6, mounting ring; 7, side cover; 8, mounting groove; 9, mounting sleeve; 10, permanent magnet pole; 11, bearing seat; 12, inner stator pole; 13, first bearing sleeve; 14, transmission rod; 15, second bearing sleeve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one

[0025] In combination Figures 1-6 A novel permanent magnet brushless DC motor, comprising a shell 3, the shell 3 side is fixedly installed with a brake mechanism 4; the brake mechanism 4 comprises a mounting block 401, the mounting block 401 side is fixedly installed with an electromagnet 403, the electromagnet 403 side is fixedly installed with a limiting frame 402, the limiting frame 402 side is fixedly connected with the shell 3 end surface, the shell 3 end surface is fixedly connected with the mounting block 401 side, the shell 3 side is fixedly installed with a commutator 408, the commutator 408 end surface is fixedly installed with a coil 409, the coil 409 is wrapped in the electromagnet 403 side, the shell 3 side is fixedly installed with a sliding frame 404, the sliding frame 404 inner wall is slidably installed with a permanent magnet 405, the permanent magnet 405 end surface is fixedly installed with a connecting block 406, the connecting block 406 side is fixedly installed with a rubber brake block 407;

[0026] Specifically, when the transmission rod 14 needs to be braked, the energization state of the permanent magnet pole 10 is cut off through the control module 2, further, the current direction of the commutator 408 and the coil 409 is controlled through the control module 2, the electromagnet 403 pole is opposite to the permanent magnet 405 according to the opposite poles attract and the same poles repel, the permanent magnet 405 connecting block 406 and the rubber brake block 407 are moved to make the rubber brake block 407 and the transmission rod 14 extrude contact, the movement state of the transmission rod 14 is changed to the stationary state through the friction force, and then the brake effect of the transmission rod 14 is realized, when not needing to brake, the pole of the electromagnet 403 is turned over through the commutator 408 to change the current direction, and the permanent magnet 405 is adsorbed on the electromagnet 403 end surface. Embodiment two

[0027] Referring to Figures 1-6 Further get, the shell 3 side fixedly installed with base 1, base 1 side fixedly installed with control module 2, the shell 3 end surface fixedly installed with side cover 7, side cover 7 side fixedly provided with installation groove 8, installation groove 8 side fixedly installed with bearing seat 11, installation groove 8 inner wall slidingly installed with installation sleeve 9, installation sleeve 9 inner wall fixedly installed with permanent magnet magnetic pole 10, installation sleeve 9 side fixedly provided with through hole, through hole inner wall fixedly installed with first bearing sleeve 13, first bearing sleeve 13 inner wall fixedly installed with inner stator magnetic pole 12, inner stator magnetic pole 12 end surface and bearing seat 11 inner wall fixedly connected, inner stator magnetic pole 12 side and first bearing sleeve 13 inner wall fixedly connected, installation sleeve 9 side fixedly installed with transmission rod 14, the shell 3 side fixedly installed with protective shell 5, the shell 3 side fixedly provided with through hole, through hole inner wall fixedly installed with second bearing sleeve 15, second bearing sleeve 15 inner wall and transmission rod 14 side fixedly connected, protective shell 5 side fixedly provided with through hole, through hole inner wall fixedly installed with installation ring 6, installation ring 6 inner wall and transmission rod 14 side slidingly connected;

[0028] Specifically, in use, the device is installed at a specified position, and further, the control module 2 is used to control the permanent magnet magnetic pole 10 to be electrified, and at the same time, the inner stator magnetic pole 12 is electrified by the Hall sensor installed on the inner wall of the side cover 7, the three groups of coils inside the inner stator magnetic pole 12 and the three groups of coils inside the permanent magnet magnetic pole 10 correspond to adjust the current direction, drive the permanent magnet magnetic pole 10 to rotate, drive the installation sleeve 9 to rotate and drive the transmission rod 14 installed on the end surface of the installation sleeve 9 to rotate, and the rotation of the installation sleeve 9 and the transmission rod 14 is adapted by the first bearing sleeve 13 and the second bearing sleeve 15.

[0029] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A new type of permanent magnet brushless DC motor comprising a housing (3), characterized in that: The shell (3) is fixedly installed with a brake mechanism (4) on the side; The brake mechanism (4) comprises a mounting block (401), the mounting block (401) is fixedly installed with an electromagnet (403) on the side, the electromagnet (403) is fixedly installed with a limiting frame (402) on the side, the limiting frame (402) is fixedly connected with the end surface of the shell (3) on the side, the end surface of the shell (3) is fixedly connected with the side surface of the mounting block (401), the shell (3) is fixedly installed with a commutator (408) on the side, the commutator (408) is fixedly installed with a coil (409) on the end surface, the coil (409) is wrapped on the side of the electromagnet (403), and the shell (3) is fixedly installed with a sliding frame (404) on the side.

2. A novel permanent magnet brushless DC motor as claimed in claim 1, characterized in that: The sliding frame (404) is slidably installed with a permanent magnet (405) on the inner wall, the permanent magnet (405) is fixedly installed with a connecting block (406) on the end surface, and the connecting block (406) is fixedly installed with a rubber brake block (407) on the side.

3. A novel permanent magnet brushless DC motor as claimed in claim 1, wherein: The shell (3) is fixedly installed with a base (1) on the side, the base (1) is fixedly installed with a control module (2) on the side, and the shell (3) is fixedly installed with a side cover (7) on the end surface.

4. A novel permanent magnet brushless DC motor as claimed in claim 3, characterized in that: The side cover (7) is fixedly provided with a mounting groove (8) on the side, the mounting groove (8) is fixedly installed with a bearing seat (11) on the side, the mounting groove (8) is slidably installed with a mounting sleeve (9) on the inner wall, and the mounting sleeve (9) is fixedly installed with a permanent magnet pole (10) on the inner wall.

5. A novel permanent magnet brushless DC motor as claimed in claim 4, characterized in that: The mounting sleeve (9) is fixedly provided with a through hole on the side, the through hole is fixedly installed with a first bearing sleeve (13) on the inner wall, the first bearing sleeve (13) is fixedly installed with an inner stator pole (12) on the inner wall, and the end surface of the inner stator pole (12) is fixedly connected with the inner wall of the bearing seat (11).

6. A novel permanent magnet brushless DC motor as claimed in claim 5, characterized in that: The inner stator pole (12) is fixedly connected with the inner wall of the first bearing sleeve (13) on the side, and the mounting sleeve (9) is fixedly installed with a transmission rod (14) on the side.

7. A novel permanent magnet brushless DC motor as claimed in claim 1, wherein: The shell (3) is fixedly installed with a protective shell (5) on the side, the shell (3) is fixedly provided with a through hole on the side, the through hole is fixedly installed with a second bearing sleeve (15) on the inner wall, the inner wall of the second bearing sleeve (15) is fixedly connected with the side surface of the transmission rod (14), the protective shell (5) is fixedly provided with a through hole on the side, the through hole is fixedly installed with a mounting ring (6) on the inner wall, and the inner wall of the mounting ring (6) is slidably connected with the side surface of the transmission rod (14).

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