Motor base and brushless motor

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a motor base and a brushless motor. The control panel is arranged, the wiring module is arranged on the control panel, the first wiring end and the second connecting end of the wiring module and the connecting circuit connecting the first wiring end and the second connecting end are arranged, so that the coil terminal of the coil winding is connected to the first wiring end, and the second connecting end is connected with an external power supply; therefore, the coil winding is connected with an external power supply through the control panel, the length of a wire terminal for connecting the coil and the external power supply is reduced, a power line in the whole motor is cleaner, meanwhile, the situation of breakage caused by an overlong connecting part is avoided, the coil winding is further welded on the same control panel, and the service life of the motor is prolonged. And the production and the internal structure of the motor can be standardized.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to a motor base and a brushless motor. Background Art

[0002] Small motors usually refer to electric motors with small size, light weight and low power. They are very common in various small devices and applications, such as household appliances, office equipment, toys, robots, drones, etc. Small motors can be DC motors or AC motors, or brushless motors or stepper motors. In small brushless motors, coil windings are often provided, which are used to generate potential energy after power is applied and further converted into mechanical energy. Therefore, the windings need to be connected to external power terminals for power supply.

[0003] In the existing technology, the winding and the external terminal power supply are often welded by the winding wire terminal and the external power supply, and connected by means of heat shrink tubing protection, or the winding is extended to the outside and welded to the outside. This method will make it necessary to wrap the terminals of multiple windings around the power terminal position for welding in multi-phase motors because the power terminal is often at one end of the base. This will cause the entire circuit to appear longer, and the welding will become inconsistent for each motor due to the layout of the circuit, which will eventually appear non-standard and is not conducive to standardized welding operations. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a motor base and a brushless motor, wherein the base is provided with a control board, the control board is provided with a wiring module, the wiring module is provided with a first connection end and a second connection end respectively connected to the winding and the external power supply, and the first connection end and the second connection end are connected by a connecting line. By arranging the first connection end below the winding shaft, the winding does not need to extend the terminal to a uniform position, reducing the length of the terminal segment, thereby making the interior of the entire motor more beautiful, and the shorter line can further reduce the risk of line breakage. Furthermore, during the production of the motor, standardized welding can be performed, and the internal line differences between the produced motors are also small.

[0005] The purpose of the utility model is achieved by the following methods:

[0006] In a first aspect, the utility model provides a motor base, comprising:

[0007] A stator assembly, comprising a stator assembly provided with a plurality of coil windings and a base body, wherein the plurality of coil windings are respectively provided with coil terminals; the coil windings are arranged on the upper part of the base body;

[0008] And a control board, provided with at least one wiring module, the wiring module is provided with a first connection end, a second connection end, and a connection line connecting the first connection end and the second connection end, the first connection end is connected to the coil terminal, and the second connection end is connected to an external power supply.

[0009] Normally, the coil winding is arranged on the upper part of the base body, and a control board is arranged on the base body, and a plurality of wiring modules are arranged on the control board. The first connection end and the second connection end of the wiring module are respectively connected to the coil terminal and the external power supply, and the original direct connection between the coil terminal and the external power supply is replaced by welding on the control board, and the first connection end is arranged on the control board corresponding to the bottom of the coil, so that the coil only needs a shorter connecting wire to be welded on the control board. In this way, the length of the coil terminal can be effectively reduced, and the connection between the coil winding and the external power supply is carried out by welding on the control board, which reduces the risk of welding point breakage due to non-standard welding. At the same time, the standardized control board structure also makes the internal structure of the motor simple, and the welding operation can be standardized.

[0010] In some embodiments, a through hole is provided in the middle of the control board, an axis core connection part and a base body platform are provided in the middle of the base body, and the control board is sleeved with the axis core connection part through the through hole and abuts against the base body platform.

[0011] An axis core connection portion is provided in the middle of the base body, and the axis core connection portion is used to connect the motor axis core and enable the stator assembly and the rotor assembly to interact with each other. A through hole is provided in the middle of the control board, and the control board is inserted into the base body through the axis core connection portion through the through hole, and further sleeved onto the base body platform, so that the control board can be arranged in a ring on the base body platform, further providing the shortest welding position for each winding.

[0012] In some embodiments, the base body platform is provided with a snap-in protrusion, and the control board is provided with a snap-in slot, and the control board is snap-in connected to the snap-in protrusion through the snap-in slot.

[0013] The provision of the snap-fit ​​protrusion and the snap-fit ​​through groove can prevent the control board from rotating and moving when it is sleeved on the base body, thereby ensuring accurate positioning of the first terminal and reducing the risk of welding falling off due to movement of the control board.

[0014] In some embodiments, the control board is provided with a first wiring area and a second wiring area, the first wiring area is arranged around the control board, and the second wiring area is arranged around the control board; the connection line is arranged in the first wiring area, and the second connection end is arranged in the second wiring area.

[0015] The first wiring area and the second wiring area are respectively used to set the connection line and the second connection terminal. By setting different line areas, especially setting the second connection terminal in the same area, the connection complexity of the external power supply can be reduced, and the electromagnetic interference of the external power supply to the entire line can be minimized.

[0016] In some embodiments, a third wiring area is provided on the other side of the control board of the second wiring area, and the third wiring area is provided with a third connection terminal corresponding to the second connection terminal. The second connection terminal and the third connection terminal are electrically connected, and the third connection terminal is connected to an external power supply.

[0017] Since the external power supply is usually connected by penetrating from the bottom, when it is connected to the control board, it is connected to two different sides of the control board. Therefore, a third wiring area and a corresponding third connection terminal are set on the back of the control board, so that the control board is connected to the external power supply at the other end, and is connected through the second connection terminal and the second connection terminal, so that when the coil winding is connected to the first connection terminal, it is also electrically connected to the third connection terminal, thereby indirectly connecting the coil winding to the external power supply.

[0018] In some embodiments, a wiring through slot is provided on the base body and penetrates the base body, and one end of the wiring through slot is provided on the base body platform and corresponds to the third wiring area.

[0019] The base body is provided with a wiring through slot, and is arranged at a corresponding position when the corresponding control board is arranged on the base body platform, so that the power wiring terminal extends from the wiring through slot and is connected to the control board.

[0020] In some embodiments, the base body is further provided with a heat dissipation groove, and the heat dissipation groove is arranged in a circle around the control board.

[0021] The heat dissipation groove is used to dissipate heat from the control board and avoid the control board circuit to prevent voltage or electrostatic breakdown.

[0022] In some embodiments, the control board is provided with heat dissipation holes, and the heat dissipation holes are provided in the non-electrical area of ​​the first wiring area.

[0023] The heat dissipation holes are arranged on the control board mounted on the base body platform, at the position of the control board corresponding to the heat dissipation groove.

[0024] In a second aspect, the utility model provides a brushless motor, comprising the motor base described in any one of the above items.

[0025] Usually in conjunction with a brushless motor structure, the control board is circular in shape and in order to be installed inside the motor, the size of the control board is the same as or smaller than the base body platform.

[0026] In some embodiments, the brushless motor further comprises a rotor assembly, a housing and a base body, the control board is arranged on the base body, the stator assembly is arranged above the base body, the rotor assembly is arranged outside the stator assembly, and the housing is arranged outside the rotor assembly.

[0027] The base body is used to place the control board and provide a base for the entire motor. The internal space formed by the combination of the outer shell and the base is used to provide operation of the rotor assembly and the stator assembly and to protect the rotor assembly and the stator assembly. The control board is set on the base body, and the stator assembly is set above the base body, so that the winding in the stator assembly can be welded to the control board at the shortest distance.

[0028] The utility model provides a motor base and a brushless motor which produce beneficial effects:

[0029] A control board is provided on which a wiring module is provided, and the coil terminal of the coil winding is connected to the first wiring terminal, and the second connection terminal is connected to an external power supply through a first wiring terminal, a second connection terminal and a connection line connecting the first wiring terminal and the second connection terminal of the wiring module, so that the coil winding is connected to the external power supply through the control board, so as to reduce the length of the wire terminal connecting the coil and the external power supply, make the power line inside the entire motor neater, and avoid the breakage caused by the excessive length of the connection part. It is further welded on the same control board so that the production and the internal structure of the motor can be standardized. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a motor base and a brushless motor of the utility model;

[0031] Figure 2 This is a front view of the control panel of the utility model;

[0032] Figure 3 It is a schematic diagram of the motor base body of the utility model;

[0033] Figure 4 This is a schematic diagram of the back side of the control panel of the utility model;

[0034] Figure 5 It is a partial schematic diagram of a motor base connected inside a brushless motor according to the utility model.

[0035] Reference numerals:

[0036] 100, coil winding; 101, coil terminal;

[0037] 200, control board; 201, through hole; 202, card connection slot; 203, heat dissipation hole; 210, first wiring area; 220, second wiring area; 230, first connection terminal; 240, second connection terminal; 250, connection line; 260, third wiring area; 270, third connection terminal;

[0038] 300, base body; 310, shaft core connection portion; 320, base body platform; 321, clamping protrusion; 330, wiring slot; 340, heat dissipation groove

[0039] 400, rotor assembly;

[0040] 500. Shell. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present invention and should not be regarded as an improper limitation on the present invention.

[0042] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the specific technical solution of the utility model will be further described in detail below in conjunction with the drawings in the embodiment of the utility model. The following embodiments are used to illustrate the utility model, but are not used to limit the scope of the utility model.

[0043] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0044] In addition, in the embodiments of the present invention, directional terms such as "up", "down", "left" and "right" are defined relative to the orientation of the components in the drawings. It should be understood that these directional terms are relative concepts. They are used for relative description and clarification, and they may change accordingly according to the changes in the orientation of the components in the drawings.

[0045] In the embodiments of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0046] In the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0047] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present the related in a specific way.

[0048] Embodiment 1:

[0049] like Figure 1-2 As shown, this embodiment provides a motor base, which includes:

[0050] The stator assembly is provided with a plurality of coil windings 100 and a base body 300, and the plurality of coil windings 100 are respectively provided with coil terminals 101; the coil windings are arranged on the upper part of the base body 300;

[0051] The control board 200 is provided with at least one wiring module, which is provided with a first connection terminal 230, a second connection terminal 240, and a connection line 250 connecting the first connection terminal 230 and the second connection terminal 240, the first connection terminal 230 is connected to the coil terminal 101, and the second connection terminal 240 is connected to an external power supply.

[0052] Specifically, in a three-phase brushless motor, three pairs of coil windings 100 are provided, wherein three coil terminals 101 are led out, and three corresponding first connection terminals 230 are provided on the control board 200. When the control board 200 is installed, the first connection terminals 230 are respectively arranged below the lead-out wire terminals, and the coil terminals 101 are welded to the control board 200 with the shortest length. The second connection terminals 240 are welded to the external power line, wherein each first connection terminal 230 corresponds to a second connection terminal 240, and they are electrically connected through the connection line 250. When the coil is welded to the first connection terminal 230 and the external power line is welded to the second connection terminal 240, the coil winding 100 is further connected to the external power supply through the connection line 250.

[0053] Normally, the coil winding 100 is arranged on the upper part of the base body 300, and a control board 200 is arranged, and a plurality of wiring modules are arranged on the control board 200, and the first connection end 230 and the second connection end 240 of the wiring module are respectively connected to the coil terminal 101 and the external power supply, and the original direct connection between the coil terminal 101 and the external power supply is replaced by welding on the control board 200, and the first connection end 230 is arranged on the control board 200 corresponding to the bottom of the coil, so that the coil only needs a shorter connection line to be welded on the control board 200. In this way, the length of the coil terminal 101 can be effectively reduced, and the connection between the coil winding 100 and the external power supply is carried out by welding on the control board 200, which reduces the risk of welding point breakage due to non-standard welding. At the same time, the standardized control board 200 structure also makes the internal structure of the motor simple, and the welding operation can be standardized.

[0054] Embodiment 2:

[0055] like Figures 3 to 5 As shown, this embodiment is based on Embodiment 1 and further illustrates and optimizes the structure in Embodiment 1.

[0056] In some embodiments, a through hole 201 is provided in the middle of the control board 200, and an axis core connection part 310 and a base body platform 320 are provided in the middle of the base body 300. The control board 200 is sleeved with the axis core connection part 310 through the through hole 201 and abuts against the base body platform 320.

[0057] A through hole 201 is provided in the control board 200, and an axis core connection part 310 is provided in the middle of the base body 300. The aperture of the through hole 201 is larger than the size of the axis core connection part 310, so that the control board 200 can be inserted into the axis core connection part 310 from the top end of the axis core connection part 310 through the through hole 201 and installed on the base body platform 320. The axis core connection part 310 is used to connect the motor axis and enable the stator assembly and the rotor assembly 400 to interact with each other. The through hole 201 allows the control board 200 to be ring-arranged on the base body platform 320, further providing the shortest welding position for each winding, and the through hole 201 can prevent the control board 200 from moving radially.

[0058] In some embodiments, the base body platform 320 is provided with a snap-in protrusion 321 , and the control board 200 is provided with a snap-in slot 202 , and the control board 200 is snap-in connected to the snap-in protrusion 321 through the snap-in slot 202 .

[0059] Specifically, three clamping protrusions 321 are provided, and the clamping protrusions 321 are arranged around the base body platform 320, and a distance is provided between the clamping protrusions 321, so that the control board 200 is not easy to move locally after being clamped. Correspondingly, three clamping slots 202 are provided on the control board 200, and the control board 200 is clamped on the base body platform 320 through the corresponding three clamping slots 202, so as to reduce the axial rotation of the control board 200 after installation, thereby avoiding the rotation of the first connection end 230 causing misalignment, thereby increasing the length of the coil terminal 101 of the coil winding 100, further ensuring the accurate positioning of the first terminal, and reducing the risk of welding falling off due to the movement of the control board 200.

[0060] In some embodiments, the control board 200 is provided with a first wiring area 210 and a second wiring area 220. The first wiring area 210 is arranged around the control board 200, and the second wiring area 220 is arranged around the control board 200; the connecting line 250 is arranged in the first wiring area 210, and the second connecting terminal 240 is arranged in the second wiring area 220.

[0061] Specifically, the first wiring area 210 is arranged on the entire control board 200, and the second wiring area 220 is arranged between the first wiring areas 210. In the three-phase motor, there are three first wiring terminals, and three connecting wires are arranged in the first wiring area 210, and the three connecting wires are arranged with an isolation distance to prevent electrical interference and reduce the risk of short circuit. The second wiring area 220 is provided with a second connection terminal 240 opposite to the three first wiring terminals, and the second connection terminal 240 is connected to the three connection wires respectively. By setting different line areas, especially setting the second connection terminal 240 in the same area, the connection complexity of the external power supply can be reduced, and the electromagnetic interference of the external power supply to the entire line can be minimized.

[0062] In some embodiments, the second wiring area 220 is provided with a third wiring area 260 on the other side of the control board 200, and the third wiring area 260 is provided with a third connection terminal 270 corresponding to the second connection terminal 240, the second connection terminal 240 and the third connection terminal 270 are electrically connected, and the third connection terminal 270 is connected to an external power supply.

[0063] Specifically, when connecting an external power source, there is also a way to connect the external power source to the other side of the first terminal, so a third wiring area 260 is provided on the other side of the control board 200 where the second wiring area 220 is located, and three third connection terminals 270 are provided in the third wiring area 260 and are electrically connected to the corresponding three second connection terminals 240. The second connection terminals 240 and the third connection terminals 270 are electrically connected, so that when the coil winding 100 is connected to the first terminal, it is also electrically connected to the third connection terminal 270, thereby indirectly connecting the coil winding 100 to the external power source.

[0064] In some embodiments, a wiring through slot 330 is disposed on the base body 300 and penetrates the base body 300 . One end of the wiring through slot 330 is disposed on the base body platform 320 and corresponds to the third wiring area 260 .

[0065] Specifically, a wiring groove 330 is dug on the base body 300, and the size of the wiring groove 330 is consistent with the size of the third wiring area 260, so that the external power supply can extend from the wiring groove 330 to the control board 200, and be welded to the circuit board, so that the power terminal extends from the wiring groove 330 and is connected to the control board 200.

[0066] In some embodiments, the base body 300 is also provided with a heat dissipation groove 340, which is arranged in a ring around the control board 200. Specifically, the heat dissipation groove 340 is arranged in a ring shape, and the setting position avoids the position of the control board 200 that the connection line 250 faces when the control board 200 is installed, and a partial raised groove is also arranged on the annular heat dissipation groove 340 to expand the empty groove position at the bottom of the circuit board so that the heat can be diffused outward through the bottom heat dissipation groove 340. The heat dissipation groove 340 is used to dissipate heat from the control board 200 and avoid the circuit of the control board 200 to prevent voltage or electrostatic breakdown.

[0067] In some embodiments, the control board 200 is provided with heat dissipation holes 203, which are arranged in the non-electrical area of ​​the first wiring area 210. Specifically, a plurality of heat dissipation holes 203 are provided, which can be arranged at the positions of the control board 200 corresponding to the above-mentioned raised grooves, so that the heat of the upper and lower circuit boards can be exchanged.

[0068] In some embodiments, the control board 200 is circular and has the same size as the base body platform 320. Specifically, usually in conjunction with the brushless motor structure, the control board 200 is circular in shape and in order to be installed inside the motor, the control board 200 is the same size as the base body platform 320 or smaller than the base body platform 320. At the same time, the same size setting can better perform the circuit board heat dissipation design, avoid heat accumulation on the circuit board or under the circuit board cannot be discharged, and eventually cause the circuit board to burn, resulting in motor failure.

[0069] Embodiment 3:

[0070] like Figure 5 As shown, this embodiment provides a brushless motor, which is provided with the motor base of Embodiment 1 and Embodiment 2, and the motor base is also provided with a heat dissipation part as in Embodiment 3.

[0071] In some embodiments, it also includes a rotor assembly 400, a shell 500 and a base body 300, the control board 200 is arranged on the base body 300, the stator assembly is arranged above the base body 300, the rotor assembly 400 is arranged outside the stator assembly, and the shell 500 is arranged outside the rotor assembly 400.

[0072] Specifically, the control board 200 is arranged on the base body 300, the stator assembly is arranged above the base body 300, the rotor assembly 400 is arranged around the stator assembly, and the housing 500 is arranged outside the rotor assembly 400. The housing 500 is buckled on the outer peripheral side of the base body 300, and the motor operation space is formed by the inside of the housing 500 and the base body 300, so as to further realize the basic functions of the motor. At the same time, a welding space is reserved between the control board 200 and the stator assembly to weld the wire terminals of the coil winding 100. The base body 300 is used to place the control board 200 and provide a base for the entire motor. The internal space formed by the combination of the housing 500 and the base is used to provide the operation of the rotor assembly 400 and the stator assembly and to protect the rotor assembly 400 and the stator assembly. The control board 200 is arranged on the base body 300, and the stator assembly is arranged above the base body 300, so that the winding in the stator assembly can be welded on the control board 200 with the shortest distance.

[0073] In some embodiments, the motor base is used for a small motor, which is used in household appliances, office equipment, toys, robots, drones, etc., and a waterproof structure can be added to make the small motor waterproof and capable of underwater operation. By using the motor base, when the coil winding 100 is connected to an external power source, the internal circuit can be kept uncluttered under high-intensity or complex environment operations, and the internal coil winding 100 and the external power source connection circuit 250 can be kept standard in the production of multiple motors, and the internal appearance is beautiful. During production, production efficiency can be improved and standardized products can be output through standardized operations.

[0074] The serial numbers of the utility model embodiments are only for description and do not represent the advantages and disadvantages of the embodiments. The above are only preferred embodiments of the utility model, and do not limit the patent scope of the utility model. Any equivalent device or equivalent process transformation made by using the contents of the utility model specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. A motor base, characterized in that: include: A stator assembly, the stator assembly being provided with a plurality of coil windings (100) and a base body (300), the plurality of coil windings (100) being respectively provided with coil terminals (101); the coil windings being arranged on the upper part of the base body (300); And a control board (200) is provided with at least one wiring module, the wiring module is provided with a first connection end (230), a second connection end (240), and a connection line (250) connecting the first connection end (230) and the second connection end (240), the first connection end (230) is connected to the coil terminal (101), and the second connection end (240) is connected to an external power supply.

2. The motor base according to claim 1, characterized in that: The control board (200) is provided with a through hole (201) in the middle, the base body (300) is provided with an axis core connection portion (310) and a base body platform (320) in the middle, and the control board (200) is sleeved on the axis core connection portion (310) through the through hole (201) and abuts against the base body platform (320).

3. The motor base according to claim 2, characterized in that: The base body platform (320) is provided with a clamping protrusion (321), and the control board (200) is provided with a clamping slot (202), and the control board (200) is clamped on the clamping protrusion (321) through the clamping slot (202).

4. The motor base according to claim 2, characterized in that: The control board (200) is provided with a first wiring area (210) and a second wiring area (220); the first wiring area (210) is arranged around the control board (200), and the second wiring area (220) is arranged around the control board (200); the connection line (250) is arranged in the first wiring area (210), and the second connection end (240) is arranged in the second wiring area (220).

5. The motor base according to claim 4, characterized in that: The second wiring area (220) is provided with a third wiring area (260) on the other side of the control board (200), and the third wiring area (260) is provided with a third connection terminal (270) corresponding to the second connection terminal (240), the second connection terminal (240) is electrically connected to the third connection terminal (270), and the third connection terminal (270) is connected to an external power supply.

6. The motor base according to claim 5, characterized in that: The base body (300) is provided with a wiring through-slot (330) penetrating the base body (300); one end of the wiring through-slot (330) is provided on the base body platform (320) and corresponds to the third wiring area (260).

7. The motor base according to claim 5, characterized in that: The base body (300) is also provided with a heat dissipation groove (340), and the heat dissipation groove (340) is arranged in a circle in the control board (200).

8. The motor base according to claim 7, characterized in that: The control board (200) is provided with a heat dissipation hole (203), and the heat dissipation hole (203) is arranged in a non-electrical area of ​​the first wiring area (210).

9. A brushless motor, characterized in that: The motor base comprises the motor base as described in any one of claims 1 to 8.

10. The brushless motor according to claim 9, characterized in that: It also includes a rotor assembly (400), a housing (500) and a base body (300), wherein the control panel (200) is arranged on the base body (300), the stator assembly is arranged above the base body (300), the rotor assembly (400) is arranged outside the stator assembly, and the housing (500) is arranged outside the rotor assembly (400).

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