CN218217034U

CN218217034U - Direct current brushless motor

Info

Publication number: CN218217034U
Application number: CN202222384014.0U
Authority: CN
Inventors: 李春晖; 董晓勇; 黄冬青; 唐波
Original assignee: Shenzhen Inteltron Intelligent Science & Technology Co ltd
Current assignee: Shenzhen Inteltron Intelligent Science & Technology Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-01-03
Anticipated expiration: 2032-09-07

Abstract

The application discloses a brushless direct current motor, which belongs to the field of motor manufacturing and comprises a driving module and a main body, wherein the driving module is connected to the main body, the main body comprises a shell and a stator, and the driving module is connected to the shell so as to enable the shell to be grounded; the driving module comprises a driving plate for integrating a driving motor assembly and a wiring board for wiring, the wiring board is located between the main body and the driving plate, the driving plate is electrically connected to the wiring board, the driving plate is connected to the shell, one side, far away from the main body, of the wiring board is connected to the driving plate, and one side, close to the main body, of the wiring board is connected to the stator. In the application, the driving plate is connected with the shell, so that current is introduced underground when the shell is electrified, and the influence on a machine body is avoided; meanwhile, the connection between the two is completed only through one short wire, so that the production cost is reduced to the maximum extent, and the production and installation efficiency is improved.

Description

Direct current brushless motor

Technical Field

The application relates to the field of motor manufacturing, in particular to a direct current brushless motor.

Background

At present, most of various electric appliances in daily life are provided with a direct current brushless motor which has the characteristics of high rotating speed, large power, small volume, light weight, long service life and the like.

Most related art dc brushless motors are under high current, and therefore the driving board that controls the motor is also often under high current. Under normal load operation, the motor reaches 180 ℃ in a few minutes without the action of a heat dissipation system, so that a fan is usually added at one end of a rotating shaft of the brushless direct current motor, and air is quickly sucked and exhausted to cool down under the operation of the motor, so that the temperature rise of the motor is within a certain control range.

However, the housing of the brushless dc motor adopting the related art is easy to carry current and the current on the housing is not well processed, so that there is a possibility of internal leakage or housing electrification in a product to which the motor is applied and installed. In view of the above-mentioned related art, the inventors consider that there is a defect that the current on the motor casing may cause the internal leakage of the applied and installed product or the electrification of the casing.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem that current on the motor shell may cause the internal leakage of a product applied and installed or the shell is electrified in the prior art, the application provides a direct current brushless motor.

The application provides a DC brushless motor adopts following technical scheme:

a brushless DC motor comprises a driving module and a main body, wherein the driving module is connected to the main body, the main body comprises a shell and a stator, and the driving module is connected to the shell so as to enable the shell to be grounded; the driving module comprises a driving plate for integrating a driving motor assembly and a wiring board for wiring, the wiring board is positioned between the main body and the driving plate, the driving plate is electrically connected to the wiring board, the driving plate is connected to the shell, one side, far away from the main body, of the wiring board is connected to the driving plate, and one side, close to the main body, of the wiring board is connected to the stator.

By adopting the technical scheme, the driving module is connected with the driving plate and the shell besides the connection between the wiring board and the stator, when the shell leaks electricity, the normal work of the motor is influenced to a certain extent, and when current exists in a product mounted and applied by the motor, the current easily influences other electronic components in the product if no conductive structure exists, so that the function of the product cannot be normally realized, and in addition, if the shell is a conductive structure, the internal current possibly flows through the shell to electrify the shell, so that the use experience of a user is reduced; because the drive plate ground connection, the drive plate is connected in the shell to make the shell can pass through drive plate ground connection, thereby pass through the derivation with motor housing electrification, guarantee the normal work of motor, reduced the influence of electric leakage to the organism that the motor was installed to the at utmost, improve the availability factor and the user experience of motor installation application product.

Preferably, the plane in which the drive plate lies horizontally corresponds to the housing axis.

Through adopting above-mentioned technical scheme, when the drive plate level corresponds and installs fan air outlet in the motor, can reduce receiving the wind-force area of drive plate to reduce the wind-force size that the drive plate received, avoid damaging drive plate or interconnecting link.

Preferably, a grounding port is formed in the drive board, a connecting wire used for connecting the grounding port is arranged on the shell, and the connecting wire is located between the shell and the drive board.

Through adopting above-mentioned technical scheme, the drive plate passes through the connecting wire and is connected with the shell and has saved the required material of connection between the two when realizing ground connection, has optimized the connection flow to be convenient for the production equipment, and compare in original both separately additionally increase conductive component again, the expense of connecting wire is lower, so that manufacturing cost has been reduced.

Preferably, the ground port is located at an end of the drive plate closest to the housing, and the connecting line is parallel to the housing axis.

Through adopting above-mentioned technical scheme, can be when realizing being connected between drive plate and shell with the redundancy of connecting wire fall to minimumly to further reduction in production cost can not influence the installation progress because the connecting wire is too long when the installation, makes overall structure light and be convenient for loading and unloading more, improves production packaging efficiency.

Preferably, the ground port is located at a corner on the drive plate.

Through adopting above-mentioned technical scheme, can avoid as far as possible taking place the mistake with drive plate upper element or circuit and touch when the installation connecting wire is on the drive plate to guarantee drive module's normal operating when realizing being connected between drive plate and shell.

Preferably, the connecting line is parallel to the housing axis.

By adopting the technical scheme, the connecting wire is connected to the nearest corner of the driving board, so that the length of the connecting wire is shortened as much as possible, the wire can generate a magnetic field per se under the condition of being electrified so as to generate interference on external signals, and the length of the connecting wire is shortened as much as possible so as to reduce the interference of the motor on the external signals to the greatest extent.

Preferably, the wiring board has a contour corresponding to the shape of the stator.

By adopting the technical scheme, the air outlet of the fan in the motor is blown out from the stator, the wiring board is corresponding to the shape of the stator, the stress area can be reduced as much as possible, the wind resistance of the wiring board is reduced, elements or wires connected on the wiring board are prevented from being damaged, and the service life of the motor is prolonged.

Preferably, the housing is provided with a notch for connecting the connecting wire.

Through adopting above-mentioned technical scheme, compare in connecting wire lug connection in the shell, connecting wire fixed connection in notch department can increase and the shell between area of contact to increase current flux when increasing joint strength, improve the water conservancy diversion effect of shell to the drive plate on electric current, further maintain the normal work of motor.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the shell is grounded through the driving board, so that the influence of shell leakage on the installed and applied product is reduced, and the use efficiency and the user experience of the product are improved;

2. the short connecting wire can reduce the signal interference of the motor to the outside;

3. the shape of the wiring board corresponds to that of the stator, so that the wind resistance borne by the wiring board is reduced to the minimum, the influence on elements and wiring on the wiring board is reduced, and the service life of the motor is prolonged;

4. open the notch that is used for installing the connecting wire on the shell rather than direct point contact and connect, improved the contact surface of connecting wire with the shell, also promoted the flux of electric current when consolidating to connect, strengthened the shell to drive plate transmission current's ability.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Reference numerals:

1. a drive module; 11. a drive plate; 111. a ground port; 12. a wiring board; 2. a main body; 21. a housing; 211. a notch; 22. a stator; 3. a connecting wire; 31. and (4) conducting wires.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments in the present application belong to the protection scope of the present application.

The application discloses a brushless DC motor.

Referring to fig. 1, the dc brushless motor includes a driving module 1 and a main body 2; the driving module 1 is electrically connected to the main body 2, the main body 2 can be driven to operate by the driving module 1, and the main body 2 is grounded through the driving module 1.

Referring to fig. 1, the main body 2 includes a housing 21 and a stator 22, a terminal plate 12 is connected to the stator 22, a driving module 1 is connected to the terminal plate 12 and the housing 21, and the driving module 1 is grounded through a ground of the body, so the housing 21 connected to the driving module 1 is also grounded. Because the installed and applied products of the motor are different, the external power supply of the motor is different, and when the internal current is overlarge in the working process of the motor, the external power supply is led into the surface of the shell 21, and at the moment, if the inside of the product applied and installed by the motor is not provided with a conductive structure, the current carried by the shell is easily led into an electronic component inside the product, so that the normal operation of the internal component of the product is influenced, and the function of the product cannot be normally realized; if the shell of the product is made of conductive materials, current can be introduced into the shell, so that the shell is electrified in the use process of the product, the human body can be influenced by the current when contacting with the shell, the user experience of the product is reduced, and the circulation of the product is reduced.

Referring to fig. 1, the driving module 1 includes a driving plate 11 and a terminal plate 12, the terminal plate 12 is located between the driving plate 11 and a stator 22, the stator 22 is connected to one side of the terminal plate 12, the other side of the terminal plate 12 is connected to the driving plate 11, and the driving plate 11 is connected to the driving body 2 through the terminal plate 12 and the stator 22. In addition, the driving plate 11 is also connected to the shell 21, and the shell 21 is grounded through the driving plate 11, so that the influence of electric leakage on the use effect of the motor caused by the shell 21 is avoided as much as possible, and the normal work of the motor is ensured.

Referring to fig. 1, the shape of the terminal plate 12 corresponds to the shape of the stator 22, and when the air outlet of the fan inside the motor blows air through the stator 22, the wind resistance on the terminal plate 12 can be minimized as much as possible, so as to reduce the influence on the components and the wiring on the terminal plate 12 as much as possible.

Referring to fig. 1, a connecting line 3 is further included, and the driving board 11 is connected to the housing 21 through the connecting line 3. The connecting wire 3 in this embodiment is specifically a wire 31, the number of the wire 31 is one, and the driving plate 11 is connected to the housing 21 through the wire 31 to realize current transmission of the driving plate 11 to the housing 21. The electric connection between the driving plate 11 and the shell 21 can be realized through one lead 31, the installation is convenient in the optimized installation process, the production efficiency is improved, and meanwhile, the production cost is greatly reduced.

Referring to fig. 1, the driving plate 11 is provided with ground openings 111 for connecting the housing 21, and the ground openings 111 are located at two corners of the driving plate 11 near one end of the housing 21. The grounding port 111 is positioned at any position on the driving plate 11, so that grounding conduction to the shell 21 can be realized, but the length of the lead 31 can be shortened by being close to the shell 21, and the influence of redundancy of the lead 31 on installation is reduced, so that the integral installation is more convenient; in addition, the conducting wire 31 can form an interference field to interfere external signals when being electrified, and the strength of signal interference of the motor to the outside is reduced while the conducting wire 31 is shortened.

Referring to fig. 1, the notch 211 for installing the connecting wire 31 is formed in the housing 21, and is connected to the housing 21 in a direct spot welding manner compared with the wire 31, on one hand, the connecting area is increased, so that the wire 31 is more firmly connected between the housing 21, on the other hand, the contact area between the wire 31 and the housing 21 is also increased, so that the current flux between the driving plate 11 and the housing 21 is increased, the conductive capacity of the driving plate 11 to the housing 21 is improved, the influence on the motor when the housing 21 is electrified is reduced to the maximum extent, and the use experience effect of the motor is improved.

In the application, the driving plate 11 is connected with the shell 21, so that current is introduced underground when the shell 21 is electrified, and the influence on the machine body is avoided; meanwhile, the two are connected through only one short wire 31, so that the production cost is reduced to the maximum extent, and the production and installation efficiency is improved; in addition, the interference of the wire 31 to the outside is small, the length of the wire 31 is shortened to be the shortest, and meanwhile, the interference strength of the motor to the outside signal is the weakest, so that the external signal is not influenced, and the using effect of the motor is improved.

Finally, it should be noted that: although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or some features may be replaced with equivalents, and any modifications, equivalents, improvements, etc. that fall within the spirit and scope of the present application are intended to be covered by the present application.

Claims

1. A DC brushless motor, characterized in that: the motor comprises a driving module (1) and a main body (2), wherein the driving module (1) is connected to the main body (2), the main body (2) comprises a shell (21) and a stator (22), and the driving module (1) is connected to the shell (21) so as to enable the shell (21) to be grounded; the driving module (1) comprises a driving plate (11) used for integrating a driving motor device and a wiring board (12) used for wiring, wherein the wiring board (12) is located between the main body (2) and the driving plate (11), the driving plate (11) is electrically connected to the wiring board (12), the driving plate (11) is located on one side, away from the main body (2), of the wiring board (12), the driving plate (11) is connected to the shell (21), and one side, close to the main body (2), of the wiring board (12) is connected to the stator (22).

2. A dc brushless motor according to claim 1, wherein: the plane of the driving plate (11) is horizontally corresponding to the axis of the shell (21).

3. A dc brushless motor according to claim 1, wherein: the driving board (11) is provided with a grounding port (111), and the shell (21) is provided with a connecting wire (3) used for connecting the grounding port (111).

4. A brushless dc motor according to claim 3, wherein: the grounding port (111) is positioned at one end of the driving plate (11) closest to the shell (21), and the connecting line (3) is parallel to the axis of the shell (21).

5. A dc brushless motor according to claim 3, wherein: the ground port (111) is located at a corner on the drive board (11).

6. A brushless dc motor according to claim 3, wherein: the connecting line (3) is parallel to the axis of the shell (21).

7. A dc brushless motor according to claim 1, wherein: the wiring board (12) has a contour corresponding to the shape of the stator (22).

8. A brushless dc motor according to claim 3, wherein: the shell (21) is provided with a notch (211) connected with the connecting wire (3).