Wire rack, stator assembly, motor and water pump

Abstract

The utility model provides a kind of wire holder, stator assembly, motor and water pump, wherein wire holder, including main body, first baffle, second baffle, third baffle and fourth baffle, the center of main body is provided with through-hole;First baffle and third baffle between limit first installation groove for installing coil, second baffle and fourth baffle between limit second installation groove for installing coil;First baffle and second baffle, respectively along the circumferential direction of main body are provided with first recess and second recess. By the installation groove of symmetrical distribution, two groups of coils are changed from the layout of the same side to be arranged on the two sides of rotor center. This fundamental change in spatial layout makes the electromagnetic components can be arranged closer to the rotor center in the radial direction, without the need to be stacked on one side and extend outward, and the change in structure of the wire holder can significantly reduce the radial envelope size of the stator assembly, motor and entire water pump.

Description

Technical Field

[0001] This utility model relates to the field of pump body structure technology, and in particular to a wire frame, stator assembly, motor and water pump. Background Technology

[0002] In the field of micro pumps (such as permanent magnet single-phase centrifugal micro pumps), the drive core typically adopts a U-shaped stator and rotor structure. In this structure, both working coils are wound and arranged on the same side (i.e., in the same direction) of the U-shaped iron core. This traditional magnetic circuit and structural layout has inherent design limitations: because all electromagnetic components are concentrated on one side of the rotor, in order to accommodate the coils, iron core, and ensure the necessary magnetic circuit length, the overall structure of the pump, especially its radial dimension, often expands outward from the rotor center, making it difficult to achieve miniaturization and compactness. This contradicts the urgent need for miniaturized pump bodies in current fields such as electronics and medical devices. Utility Model Content

[0003] This utility model provides a wire frame, stator assembly, motor and water pump to solve the defects of the existing water pump's overall structure, especially its radial dimension, which often expands outward from the rotor center, making it difficult to achieve miniaturization and compactness.

[0004] To achieve the above objectives, the first aspect of the present invention is: a wire frame, comprising: The main body has a through hole at its center for the rotor to pass through; The first baffle and the second baffle are respectively disposed at both ends of the main body and are symmetrical with respect to the center of the through hole; The third and fourth baffles are disposed on the main body and located between the first and second baffles, and are symmetrical with respect to the center of the through hole; Wherein, a first mounting groove for mounting a coil is defined between the first baffle and the third baffle, and a second mounting groove for mounting a coil is defined between the second baffle and the fourth baffle; On the first baffle and the second baffle, a first groove and a second groove are respectively provided along the circumference of the main body.

[0005] Furthermore, along the direction from the first baffle to the second baffle, the main body is provided with an opening that communicates with the through hole.

[0006] The second aspect of the technical solution of this utility model is: the wire frame as described in the above embodiments; Two sets of coils are respectively wound in the first and second mounting slots of the wire frame; A first iron core and a second iron core, wherein the first iron core is disposed in the first groove and the second iron core is disposed in the second groove, and the first iron core and the second iron core are detachably connected.

[0007] Furthermore, the first iron core includes a first limiting block and a first plug-in end extending from the first limiting block to at least one side; The second iron core includes a second limiting block and a second plug-in end extending from the second limiting block to at least one side; The first plug-in terminal and the second plug-in terminal are plugged into each other.

[0008] Furthermore, the first iron core also includes a third insertion end, which is respectively disposed on both sides of the first insertion end; The second iron core also includes a fourth insertion end, which is respectively disposed on both sides of the second insertion end. The third connector and the fourth connector are connected to each other.

[0009] Furthermore, one of the first plug-in end and the second plug-in end is provided with a protrusion, and the other is provided with a recess that mates with the protrusion; And / or, one of the third plug-in end and the fourth plug-in end is provided with a protrusion, and the other is provided with a recess that mates with the protrusion.

[0010] The third aspect of this utility model is: an electric motor, comprising: Rotor; and Stator assembly as described in the above embodiments; The rotor is rotatably disposed within the through hole of the stator assembly's wire frame.

[0011] The fourth aspect of this utility model is: a water pump, comprising: The motor as described in the above embodiments is disposed within the water pump housing; and An impeller assembly is disposed inside the pump housing, and its input end is connected to the output end of the motor.

[0012] Furthermore, it also includes: The pump housing includes a filter cover, a pressure cap, a rear cover, and a pressure plate. The two ends of the pressure cap are respectively connected to one end of the water pump housing and the filter cover. The rear cover is connected to the other end of the water pump housing, and the pressure plate is connected to the side end of the water pump housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by using symmetrically distributed mounting slots, the two sets of coils are changed from a layout on the "same side" to being arranged on both sides of the rotor center. This fundamental change in spatial layout allows the electromagnetic components to be arranged closer to the rotor center in the radial direction, without having to be stacked on one side and extended outwards. The structural change of the coil frame can significantly reduce the radial envelope size of the stator assembly, motor, and the entire water pump. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the wire frame structure provided by this utility model; Figure 2 This is a schematic diagram of the stator assembly provided by this utility model; Figure 3 This is a schematic diagram of the structure of the first embodiment of the first iron core provided by this utility model; Figure 4 This is a schematic diagram of the structure of the first embodiment of the second iron core provided by this utility model; Figure 5 This is a schematic diagram of the structure of the second embodiment of the first iron core provided by this utility model; Figure 6 This is a schematic diagram of the structure of the second embodiment of the second iron core provided by this utility model; Figure 7 This is a schematic diagram of the structure of the motor provided by this utility model; Figure 8 This is a schematic diagram of the water pump provided by this utility model.

[0016] Figure label: 100. Wire frame; 1. Main body; 11. Through hole; 12. Opening; 21. First baffle; 22. Second baffle; 31. Third baffle; 32. Fourth baffle; 41. First mounting groove; 42. Second mounting groove; 51. First recess; 52. Second recess; 200. Stator assembly; 61. First iron core; 611. First limiting block; 612. First insertion end; 613. Third insertion end; 614. Protrusion; 62. Second iron core; 621. Second limiting block; 622. Second insertion end; 623. Fourth insertion end; 624. Recess; 300. Motor; 71. Rotor; 400. Water pump; 81. Water pump housing; 82. Impeller assembly; 83. Filter cover; 84. Pressure cap; 85. Rear cover; 86. Pressure plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] like Figures 1 to 3 As shown, the first aspect of this utility model provides a wire frame 100, which is mainly used in motors (especially water pump motors) as a frame for winding coils and for assembling iron cores.

[0019] The wire frame 100 includes a main body 1. The main body 1 is generally elliptical cylinder, with a through hole 11 extending axially through its center. The through hole 11 is used for the rotor of the power supply to pass through and provide it with rotation space.

[0020] At both ends of the main body 1 along its vertical axis, a first baffle 21 and a second baffle 22 are integrally formed or fixedly disposed, respectively. The first baffle 21 and the second baffle 22 are axially symmetrically distributed with respect to the center of the through hole 11. On the main body 1, in the area between the first baffle 21 and the second baffle 22, a third baffle 31 and a fourth baffle 32 are also disposed. The third baffle 31 and the fourth baffle 32 are also axially symmetrically distributed with respect to the center of the through hole 11.

[0021] The first baffle 21 and the third baffle 31 are spaced a certain distance apart in the axial direction, thereby defining an annular first mounting groove 41 between them. Similarly, an annular second mounting groove 42 is defined between the second baffle 22 and the fourth baffle 32. The first mounting groove 41 and the second mounting groove 42 are used for winding coils (not shown in the figure).

[0022] Furthermore, a first groove 51 and a second groove 52 are respectively formed on the first baffle 21 and the second baffle 22 along the circumference of the main body 1 (i.e., the direction surrounding the through hole 11). The first groove 51 and the second groove 52 can be arc-shaped grooves or rectangular grooves, which are used to accommodate and position the iron core.

[0023] By using symmetrically distributed mounting slots, the two sets of coils are changed from a layout on the "same side" to being arranged on opposite sides of the rotor center. This fundamental change in spatial layout allows the electromagnetic components to be arranged radially closer to the rotor center, instead of being entirely stacked on one side and extending outwards. The structural change in the coil frame significantly reduces the radial envelope dimensions of the stator assembly, motor, and the entire pump.

[0024] As a preferred or optional embodiment, an opening 12 is provided through the side wall of the main body 1 along the direction from the first baffle 21 to the second baffle 22 (i.e., perpendicular to the axial direction). This opening 12 communicates with the central through hole 11. The design of this opening 12 can be used for heat dissipation, weight reduction, or to facilitate the lead wires of the motor to be led out from inside the through hole 11.

[0025] Based on the aforementioned wire frame 100, a second aspect of this utility model provides a stator assembly 200. The stator assembly 200 includes: the wire frame 100 described in Embodiment 1, two sets of coils, and a first iron core 61 and a second iron core 62.

[0026] Two sets of coils are tightly wound into the first mounting slot 41 and the second mounting slot 42 of the coil frame 100, respectively. The first iron core 61 is embedded and fixed in the first groove 51 on the first baffle 21, and the second iron core 62 is embedded and fixed in the second groove 52 on the second baffle 22. Both the first iron core 61 and the second iron core 62 are made of magnetically conductive material to guide and concentrate the magnetic field generated by the coils. The two coils and their corresponding iron cores act symmetrically on the rotor, forming a more balanced and efficient magnetic circuit. Compared with the potential magnetic circuit asymmetry or magnetic leakage problems of the U-shaped structure, the symmetrical structure of this solution is beneficial to improving electromagnetic conversion efficiency and maintaining or improving motor performance while achieving compactness.

[0027] The first core 61 and the second core 62 are connected in a detachable manner. For example, they can be connected by screws, clips, or the plug-in structure described below. This detachable design facilitates the assembly, maintenance, or replacement of the cores in the stator assembly.

[0028] Based on the above embodiments, a specific detachable connection method is provided.

[0029] The first core 61 includes a first limiting block 611. The shape of the first limiting block 611 matches the first groove 51 to ensure proper assembly. A first insertion end 612 extends from the first limiting block 611 to at least one side.

[0030] The second core 62 includes a second limiting block 621. The shape of the second limiting block 621 matches the shape of the second groove 52. A second insertion end 622 extends from the second limiting block 621 to at least one side.

[0031] After the first iron core 61 and the second iron core 62 are respectively inserted into the corresponding first groove 51 and second groove 52, the first insertion end 612 and the second insertion end 622 are aligned with each other and inserted together, thereby realizing the connection and fixation of the two. The first limiting block 611 and the second limiting block 621 can prevent the iron core from coming out radially.

[0032] Based on the above embodiments, in order to obtain a more stable connection, the first iron core 61 and the second iron core 62 can adopt a double-sided plug-in structure.

[0033] Specifically, in addition to the first insertion end 612, the first iron core 61 also includes a third insertion end 613. The third insertion end 613 and the first insertion end 612 are respectively located on both sides of the axial direction of the first limiting block 611 (i.e., the left and right sides).

[0034] Correspondingly, in addition to the second insertion end 622, the second iron core 62 also includes a fourth insertion end 623. The fourth insertion end 623 and the second insertion end 622 are respectively disposed on both sides of the axial direction of the second limiting block 621.

[0035] During assembly, the first plug-in end 612 and the second plug-in end 622 are plugged into each other, and at the same time, the third plug-in end 613 and the fourth plug-in end 623 are also plugged into each other, forming a stable connection on the left and right sides, which greatly enhances the overall rigidity of the iron core assembly.

[0036] In the above-mentioned plug-in structure, a positioning structure can be further provided to prevent relative rotation or loosening after plugging in.

[0037] For example, in the pair of plug-in terminals 612 and 622, a protrusion 614 can be provided on the end face or side of one of them (such as the first plug-in terminal 612), and a recess 624 that matches the shape of the protrusion 614 can be provided at the corresponding position of the other (the second plug-in terminal 622). When the two are plugged in, the protrusion 614 is engaged in the recess 624 to achieve circumferential or axial positioning.

[0038] Similarly, the same "one convex, one concave" mating method can also be used in the third plug-in end 613 and the fourth plug-in end 623 (for example, a protrusion is provided on the third plug-in end 613 and a concave part is provided on the fourth plug-in end 623, not otherwise labeled in the figure). It should be noted that the positioning structure can be provided on only one pair of plug-in ends, or it can be provided on both pairs of plug-in ends simultaneously, depending on the specific requirements for connection stability.

[0039] A third aspect of this utility model provides a motor 300. The motor 300 includes a rotor 71 and a stator assembly 200 as described in the above embodiments. The motor 300 in this embodiment can be used for both (AC) single-phase centrifugal micropumps and (DC) single-phase centrifugal micropumps.

[0040] The rotating portion of rotor 71 passes through the through hole 11 at the center of the wire frame 100 of stator assembly 200. When the coil of stator assembly 200 is energized, the generated magnetic field interacts with rotor 71, driving rotor 71 to rotate.

[0041] A fourth aspect of this utility model provides a water pump 400. The water pump 400 includes a water pump housing 81, a motor 300 as described in the above embodiments, and an impeller assembly 82.

[0042] The motor 300 is housed and fixed within the pump housing 81. The impeller assembly 82 is also housed within the pump housing 81, typically in a separate pump chamber. The input end (e.g., the impeller shaft) of the impeller assembly 82 is connected to the output end of the rotor 71 of the motor 300 via a coupling, direct connection, or other transmission method. When the motor 300 starts, it drives the impeller assembly 82 to rotate, thereby performing work on the fluid (such as water) and achieving the pumping function. The pump 400 also includes a filter cover 83, a pressure cover 84, a rear cover 85, and a pressure plate 86. The two ends of the pressure cover 84 are connected to one end of the pump housing 81 and the filter cover 83, respectively. The rear cover 85 is connected to the other end of the pump housing 81, and the pressure plate 86 is connected to the side end of the pump housing 81. The entire stator assembly 200 and rotor 71 are housed and enclosed within the pump housing 71. This significant reduction in size allows the motor 300 to be used in more space-constrained applications, such as precision instruments and portable devices, broadening its application range. At the same time, the compact structure also enhances the overall rigidity of the motor 300 and improves its reliability in special environments.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wire frame, characterized in that, include: The main body has a through hole at its center for the rotor to pass through; The first baffle and the second baffle are respectively disposed at both ends of the main body and are symmetrical with respect to the center of the through hole; The third and fourth baffles are disposed on the main body and located between the first and second baffles, and are symmetrical with respect to the center of the through hole; Wherein, a first mounting groove for mounting a coil is defined between the first baffle and the third baffle, and a second mounting groove for mounting a coil is defined between the second baffle and the fourth baffle; On the first baffle and the second baffle, a first groove and a second groove are respectively provided along the circumference of the main body.

2. The wire frame according to claim 1, characterized in that, Along the direction from the first baffle to the second baffle, the main body is provided with an opening that communicates with the through hole.

3. A stator assembly, characterized in that, include: The wire frame as described in claim 1 or 2; Two sets of coils are respectively wound in the first and second mounting slots of the wire frame; A first iron core and a second iron core, wherein the first iron core is disposed in the first groove and the second iron core is disposed in the second groove, and the first iron core and the second iron core are detachably connected.

4. The stator assembly according to claim 3, characterized in that, The first iron core includes a first limiting block and a first plug-in end extending from the first limiting block to at least one side; The second iron core includes a second limiting block and a second plug-in end extending from the second limiting block to at least one side; The first plug-in terminal and the second plug-in terminal are plugged into each other.

5. The stator assembly according to claim 4, characterized in that, The first iron core also includes a third insertion end, which is respectively disposed on both sides of the first insertion end. The second iron core also includes a fourth insertion end, which is respectively disposed on both sides of the second insertion end. The third connector and the fourth connector are connected to each other.

6. The stator assembly according to claim 5, characterized in that, One of the first plug-in end and the second plug-in end is provided with a protrusion, and the other is provided with a recess that mates with the protrusion; And / or, one of the third plug-in end and the fourth plug-in end is provided with a protrusion, and the other is provided with a recess that mates with the protrusion.

7. An electric motor, characterized in that, include: Rotor; as well as Stator assembly as described in any one of claims 3 to 6; The rotor is rotatably disposed within the through hole of the stator assembly's wire frame.

8. A water pump, characterized in that, include: Water pump casing; The motor as described in claim 7, wherein the motor is disposed within the housing of the water pump; as well as An impeller assembly is disposed inside the pump housing, and its input end is connected to the output end of the motor.

9. The water pump according to claim 8, characterized in that, Also includes: The pump housing includes a filter cover, a pressure cap, a rear cover, and a pressure plate. The two ends of the pressure cap are respectively connected to one end of the water pump housing and the filter cover. The rear cover is connected to the other end of the water pump housing, and the pressure plate is connected to the side end of the water pump housing.

Images