Direct-current brushless motor with mechanical speed regulation function

Abstract

The utility model discloses a direct current brushless motor with a mechanical speed regulation function, which relates to the field of motor design and comprises a front shell, a rear shell, a rotating shaft and a gearbox, the gearbox is fixedly mounted on the rear side of the rear shell, the front shell is fixedly mounted on the front side of the rear shell, the rotating shaft is rotatably mounted in the middle of the front shell and the rear shell in a matched manner, and the rear end of the rotating shaft drives the gearbox to swing; a brushless motor is installed between the front shell and the rear shell and comprises a stator and a rotor, the stator is fixedly installed in the front shell, the rotor is installed between the front shell and the rear shell in a running fit mode, a rotating shaft is fixedly installed in the middle of the rotor, the stator is electrically connected with a connector, and the connector is electrically connected with a mechanical speed regulator. Compared with the prior art, the brushless motor is used for replacing a direct current motor of a traditional fan, the rotor of the brushless motor can rotate between the front shell and the rear shell, noise generated when the fan works can be effectively reduced, the energy efficiency ratio is higher, carbon emission can be effectively reduced, and the heat dissipation effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor design field especially is related to a direct current brushless motor with mechanical speed regulation function. BACKGROUND

[0002] In the prior art fan, generally all use AC motor to drive fan blade rotation, and the fan head function is generally realized by adding a gear box, which is also called a gear box, to control the back and forth swing of the fan head.

[0003] For example, the prior art (publication number: CN218817139U) discloses a novel fan gear box swing switch assembly; (publication number: CN218958667U) discloses a fan motor, gear box, capacitor, switch wire pressing structure; (publication number: CN214945196U) discloses a novel tail gear box for fan motor; the above three schemes all improve the specific structure of the gear box to enable the fan to swing while working, but there are few improvements to the fan motor itself in the prior art. In the prior art, the direct current motor used for the fan generally uses a brush driving method. The carbon brush and the rotor rub against each other to produce noise and vibration, which seriously affects the service life of the motor, and the heat dissipation effect is poor, which is easy to damage in long-time work. Therefore, the traditional motor used for the fan is an AC motor, which has high energy efficiency, high carbon emission, and large noise and short service life during work.

[0004] In addition, there are also built-in fan blade schemes in the prior art, such as (publication number: CN118074400A) a double noise reduction type fan motor, which drives the built-in cooling fan to remove the heat of the motor. However, the built-in fan blade method increases the rotational resistance of the rotating shaft, which further reduces the efficiency of the fan. UTILITY MODEL CONTENTS

[0005] The utility model overcomes the above-mentioned situation, and provides a technical scheme which can solve the above-mentioned problems.

[0006] A direct current brushless motor with mechanical speed regulation function, comprising a front shell, a rear shell, a rotating shaft and a gear box, the gear box is fixedly installed on the rear side of the rear shell, the front shell is fixedly installed on the front side of the rear shell, the rotating shaft is rotatably and cooperatively installed in the middle part of the front shell and the rear shell, and the rear end of the rotating shaft drives the gear box to swing;

[0007] A brushless motor is installed between the front shell and the rear shell, the brushless motor comprises a stator and a rotor, the stator is fixedly installed in the front shell, the rotor is rotatably and cooperatively installed between the front shell and the rear shell, the rotating shaft is fixedly installed in the middle part of the rotor, a connector is electrically and fixedly installed on the stator, a notch is formed on the outer side of the front shell, the connector is arranged on the inner side of the notch, and a mechanical speed regulator is electrically and fixedly installed on the connector.

[0008] Further, the stator of the brushless motor comprises a bearing seat, a circuit board and a winding support, the bearing seat is fixedly installed in the middle of the front shell through screws, the circuit board and the winding support are both fixedly installed on the bearing seat, the copper wire winding is installed on the winding support by winding, the copper wire winding is electrically connected to the circuit board, and the connector is inlaidly installed on the circuit board.

[0009] Further, the mechanical speed regulator comprises a positioning frame and a plurality of on-off switches, the plurality of on-off switches are all fixedly installed on the positioning frame, the connector is provided with a voltage access end, a grounding end and a plurality of gear control ends, the positive electrode of the power supply is electrically connected to the voltage access end, the plurality of gear control ends are circuit parallelly arranged on the grounding end, and the plurality of on-off switches are one-to-one electrically connected and installed on the gear control ends.

[0010] Further, the connector comprises a socket and a plug, the socket is inlaidly installed on the circuit board, the plug and the mechanical speed regulator are electrically connected with each other, and the plug is installed in the socket in plug-in cooperation through the gap.

[0011] Further, the outer side of the bearing seat is formed with two stepped grooves, the middle part of the circuit board is formed with a positioning hole, the positioning hole is fixedly installed in the stepped groove on the front side, and the middle part of the winding support is formed with a through hole, and the through hole is fixedly installed in the stepped groove on the rear side.

[0012] Further, the first key groove is formed in the positioning hole, and the first flat key is formed on the outer side of the bearing seat and is gap-fit installed in the first key groove.

[0013] Further, the plurality of second key grooves are circularly arranged between each other, the plurality of second flat keys are formed on the outer side of the bearing seat and are gap-fit installed in the second key grooves one by one.

[0014] Further, the rotor of the brushless motor comprises a rotating cover and a magnetic ring, the rotating shaft is fixedly installed in the middle of the rotating cover, the magnetic ring is fixedly installed on the inner side of the rotating cover, the winding support is gap-fit installed on the inner side of the magnetic ring, and the rotating cover rotates between the front shell and the rear shell.

[0015] Further, the ball bearing is fixedly installed at the front end and the rear end in the bearing seat, and the inner ring of the ball bearing is sleeved and installed on the rotating shaft.

[0016] Compared with the prior art, the fan has the advantages that the brushless motor is used to replace the direct current motor of the traditional fan, the rotor of the brushless motor can rotate between the front shell and the rear shell, the rotating shaft is fixed to the middle part of the rotor, the rear end of the rotating shaft drives the tooth box, the front end of the rotating shaft drives the fan blade, the stable installation of the brushless motor can be realized, the stator of the brushless motor can be fixed in the front shell, the rotor can be driven to rotate stably when the stator is powered, the brushless motor is used for driving, the noise of the fan during work can be effectively reduced, the energy efficiency ratio is higher, the carbon emission can be effectively reduced, the rotor rotating between the front shell and the rear shell can also take away part of the heat during work of the brushless motor, and the stability during long-time work is guaranteed.

[0017] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0019] Figure 1 It is the structure schematic view of the utility model;

[0020] Figure 2 It is the structure schematic view of another view of the utility model;

[0021] Figure 3 It is the explosion structure schematic view of the utility model;

[0022] Figure 4 It is the explosion structure schematic view of the stator of the utility model;

[0023] Figure 5 It is the gear shifting principle schematic view of the connector of the utility model;

[0024] Figure 6 It is the circuit structure schematic view of the connector of the utility model.

[0025] As shown in the figure: 1, front shell; 2, rear shell; 3, rotating shaft; 4, gear box; 5, brushless motor; 51, stator; 511, bearing seat; 512, circuit board; 513, winding support; 52, rotor; 521, rotating cover; 522, magnetic ring; 6, connector; 61, socket; 62, plug; 601, voltage access end; 602, ground end; 603, gear control end; 7, notch; 8, mechanical speed regulator; 81, positioning frame; 82, on-off switch; 9, positive electrode of power supply; 10, stepped groove; 11, positioning hole; 12, through hole; 13, first key groove; 14, first flat key; 15, second key groove; 16, second flat key; 17, ball bearing. DETAILED DESCRIPTION

[0026] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0027] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0028] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] As Figures 1-6 shown, the utility model discloses a direct current brushless motor 5 with mechanical speed regulation function, including front shell 1, rear shell 2, pivot 3 and tooth box 4, tooth box 4 fixed mounting is at the back of rear shell 2, front shell 1 fixed mounting is at the front of rear shell 2, pivot 3 rotation cooperation installs in the middle part of front shell 1 and rear shell 2, the rear end of pivot 3 drives tooth box 4 to swing,

[0032] Front shell 1 and rear shell 2 between installation have brushless motor 5, and brushless motor 5 includes stator 51 and rotor 52, stator 51 fixed mounting is in front shell 1, rotor 52 rotation cooperation installs between front shell 1 and rear shell 2, pivot 3 fixed installation is in the middle part of rotor 52, and connector 6 is electrically connected and installed on stator 51, and the outside of front shell 1 is shaped with notch 7, and connector 6 is arranged on the inside of notch 7, and mechanical speed regulator 8 is electrically connected and installed on connector 6,

[0033] Its principle is: using brushless motor 5 to replace traditional fan's direct current motor, the rotor 52 of brushless motor 5 can rotate between front shell 1 and rear shell 2, pivot 3 is fixed in the middle part of rotor 52, the rear end of pivot 3 drives tooth box 4, the front end of pivot 3 drives fan blade, can realize the stable installation of brushless motor 5, the stator 51 of brushless motor 5 can be fixed in front shell 1, when power supply is given to stator 51, can drive rotor 52 to rotate stably, using brushless motor 5 to drive, can effectively reduce the noise when fan works, and also has higher energy efficiency ratio, can also effectively reduce carbon emission, and the rotation of rotor 52 between front shell 1 and rear shell 2 can also take away part of heat when brushless motor 5 works, guarantees the stability when working for a long time.

[0034] Further: the stator 51 of brushless motor 5 includes bearing seat 511, circuit board 512 and winding support 513, bearing seat 511 is fixedly installed in the middle part in front shell 1, circuit board 512 and winding support 513 are all fixedly installed on bearing seat 511, copper winding is wound and installed on winding support 513, copper winding is electrically connected and installed on circuit board 512, and connector 6 is embedded and installed on circuit board 512;Can guarantee the stable assembly of stator 51 in front shell 1, when power supply is given to copper winding on circuit board 512, can form stable magnetic field on winding support 513, further effectively control rotor 52 to rotate, in the process of brushless motor 5 work, because stator 51 is completely fixed, will not rotate when electrifying, can realize direct current brushless drive rotor 52, further avoids the noise when carbon brush rubs, also can guarantee the service life and working efficiency of motor.

[0035] Further, the mechanical speed regulator 8 comprises a positioning frame 81 and a plurality of on-off switches 82, the plurality of on-off switches 82 are fixedly installed on the positioning frame 81, the connector 6 is provided with a voltage access end 601, a grounding end 602 and a plurality of gear control ends 603, the voltage access end 601 is electrically connected with the positive electrode 9 of the power supply, the plurality of gear control ends 603 are circuit parallelly arranged on the grounding end 602, and the plurality of on-off switches 82 are electrically connected and installed on the gear control ends 603 one by one; the positioning frame 81 is fixed on the fan, the working gear of the circuit board 512 is switched by pressing one of the on-off switches 82, thereby controlling the gear of the stator 51, the rotating speed of the rotor 52 can be effectively controlled, and the technical effect of starting the fan by gear shifting through mechanical speed regulation is realized.

[0036] Further, the connector 6 comprises a socket 61 and a plug 62, the socket 61 is embeddedly installed on the circuit board 512, the plug 62 is electrically connected with the mechanical speed regulator 8, and the plug 62 is insertedly and matchingly installed in the socket 61 through the gap 7; since the fan needs to be started, shifted and stopped through the mechanical speed regulator 8 throughout the process, the mechanical speed regulator 8 may be damaged after the fan is used for a long time, when the mechanical speed regulator 8 is damaged, the plug 62 can be pulled out of the socket 61, and a brand new mechanical speed regulator 8 is replaced, thereby facilitating the actual use.

[0037] Further, the outer side of the bearing seat 511 is formed with two stepped grooves 10, the middle part of the circuit board 512 is formed with a positioning hole 11, the positioning hole 11 is fixedly installed in the front stepped groove 10, and the middle part of the winding support 513 is formed with a through hole 12, the through hole 12 is fixedly installed in the rear stepped groove 10; the stepped grooves 10 are used to limit the circuit board 512 and the winding support 513 respectively, thereby realizing the technical effect of stable installation, ensuring the firmness of the stator 51, and thereby improving the service life of the brushless motor 5.

[0038] Further, the positioning hole 11 is formed with a first key groove 13, the outer side of the bearing seat 511 is formed with a first flat key 14, and the first flat key 14 is gap-fit installed in the first key groove 13; the circuit board 512 can be effectively prevented from rotating on the bearing seat 511, thereby avoiding damage to the brushless motor 5.

[0039] Further, the through hole 12 is formed with a plurality of second key grooves 15, the plurality of second key grooves 15 are circularly arranged with each other, the outer side of the bearing seat 511 is formed with a plurality of second flat keys 16, and the second flat keys 16 are gap-fit installed in the second key grooves 15 one by one; the winding support 513 can be effectively prevented from rotating on the bearing seat 511, thereby ensuring the stability of the stator 51 as a whole and improving the service life.

[0040] Further, the rotor 52 of the brushless motor 5 comprises a rotating cover 521 and a magnetic ring 522, the rotating shaft 3 is fixedly installed in the middle of the rotating cover 521, the magnetic ring 522 is fixedly installed on the inner side of the rotating cover 521, the wire winding support 513 is gap-fittedly installed on the inner side of the magnetic ring 522, and the rotating cover 521 rotates between the front shell 1 and the rear shell 2; the copper wire winding can form a magnetic field on the wire winding support 513 when being electrified, the magnetic field is matched with the magnetic field of the magnetic ring 522, and then the rotor 52 is driven to rotate at high speed, and the arrangement of the rotating shaft 3 can ensure the stable installation of the rotor 52 and improve the stability of the rotor 52 in the rotating process.

[0041] Further, the bearing seat 511 is fixedly installed with the ball bearings 17 at the front end and the rear end, and the inner ring of the ball bearings 17 is sleeved and installed on the rotating shaft 3; when the rotating shaft 3 rotates, the rolling friction can be realized by using the ball bearings 17, so as to reduce the friction force and the heat generation amount of the brushless motor 5 during operation.

[0042] The embodiment is not limited in shape, material, structure and the like of the utility model, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the utility model are within the protection scope of the utility model technical scheme.

Claims

1. A direct current brushless motor with mechanical speed regulation function, comprising a front shell, a rear shell, a rotating shaft and a gear box, the gear box is fixedly installed on the rear side of the rear shell, the front shell is fixedly installed on the front side of the rear shell, the rotating shaft is rotatably installed in the middle of the front shell and the rear shell, and the rear end of the rotating shaft drives the gear box to swing; characterized in that: a brushless motor is installed between the front shell and the rear shell, the brushless motor comprises a stator and a rotor, the stator is fixedly installed in the front shell, the rotor is rotatably installed between the front shell and the rear shell, the rotating shaft is fixedly installed in the middle of the rotor, a connector is electrically and fixedly installed on the stator, a notch is formed on the outer side of the front shell, the connector is arranged on the inner side of the notch, and a mechanical speed regulator is electrically and fixedly installed on the connector. The stator of the brushless motor comprises a bearing seat, a circuit board and a winding support, the bearing seat is fixedly installed in the middle of the front shell by screws, the circuit board and the winding support are both fixedly installed on the bearing seat, a copper wire winding is woundly installed on the winding support, the copper wire winding is electrically and fixedly installed on the circuit board, and the connector is inlaidly installed on the circuit board.

2. The brushless DC motor with mechanical speed regulation function according to claim 1, characterized in that: The mechanical speed regulator comprises a positioning frame and a plurality of on-off switches, the plurality of on-off switches are all fixedly installed on the positioning frame, the connector is provided with a voltage access end, a grounding end and a plurality of gear control ends, a positive electrode of a power supply is electrically connected to the voltage access end, the plurality of gear control ends are circuit parallelly arranged on the grounding end, and the plurality of on-off switches are one-to-one electrically and fixedly installed on the gear control ends.

3. The brushless DC motor with mechanical speed regulation function according to any one of claims 1 or 2, characterized in that: The connector comprises a socket and a plug, the socket is inlaidly installed on the circuit board, the plug and the mechanical speed regulator are electrically connected to each other, and the plug is plug-in and fitly installed in the socket through the notch.

4. The brushless DC motor with mechanical speed regulation function according to claim 3, characterized in that: The outer side of the bearing seat is formed with two stepped grooves, the middle of the circuit board is formed with a positioning hole, the positioning hole is fixedly installed in the stepped groove on the front side, the middle of the winding support is formed with a through hole, and the through hole is fixedly installed in the stepped groove on the rear side.

5. The brushless DC motor with mechanical speed regulation function according to claim 2, characterized in that: The positioning hole is formed with a first key groove, the outer side of the bearing seat is formed with a first flat key, and the first flat key is gap fitly installed in the first key groove.

6. The brushless DC motor with mechanical speed regulation function according to claim 5, characterized in that: The through hole is formed with a plurality of second key grooves, the plurality of second key grooves are circularly arranged with each other, the outer side of the bearing seat is formed with a plurality of second flat keys, and the second flat keys are one-to-one gap fitly installed in the second key grooves.

7. A brushless DC motor with mechanical speed regulation according to any one of claims 5 or 6, characterized in that: The rotor of the brushless motor comprises a rotating cover and a magnetic ring, the rotating shaft is fixedly installed in the middle of the rotating cover, the magnetic ring is fixedly installed on the inner side of the rotating cover, the winding support is gap fitly installed on the inner side of the magnetic ring, and the rotating cover rotates between the front shell and the rear shell.

8. The brushless DC motor with mechanical speed regulation function according to claim 2, characterized in that: Ball bearings are fixedly installed at the front and rear ends in the bearing seat, and the inner rings of the ball bearings are sleevedly installed on the rotating shaft.

9. The brushless DC motor with mechanical speed regulation function according to any one of claims 2 or 8, characterized in that: ​

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