Stator assembly, motor and booster pump

Abstract

The utility model discloses a stator assembly, a motor and a booster pump, the stator assembly comprises a stator core, the stator core comprises a stator yoke and a plurality of stator teeth arranged on the stator yoke, and a winding groove is formed between two adjacent stator teeth; the stator core is formed by bending and encircling the laminated strip-shaped punching sheets, one end of the stator yoke is provided with a clamping part, the other end of the stator yoke is provided with a clamping groove, and the clamping part and the clamping groove can be clamped and matched, so that the laminated strip-shaped punching sheets are bent and encircled to form the stator core. The stator assembly provided by the utility model can solve the technical problem that the production process of the stator assembly is complex.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a stator assembly, a motor and a booster pump. Background Art

[0002] In the prior art, the production process of the stator assembly is usually to first punch out the stator punching sheets through a stamping process, and then stack the stamped stator punching sheets to a specified size to form a stator core, and then carry out subsequent insulation, winding and other processes. The whole process is relatively complicated, and when the processed stator core is wound, the slot fill rate of the stator winding will decrease due to the limitation of the width of the winding slot after forming, which will have a certain impact on the motor efficiency. Utility Model Content

[0003] The main purpose of the utility model is to provide a stator component, aiming to solve the technical problem of complex production process of the stator component.

[0004] To achieve the above-mentioned purpose, the utility model proposes a stator assembly, which includes a stator core, and the stator core includes a stator yoke and a plurality of stator teeth arranged on the stator yoke, and a winding slot is formed between two adjacent stator teeth; the stator core is formed by stacking bar punching sheets and then bending and enclosing them, and a clamping portion is provided at one end of the stator yoke, and a clamping slot is provided at the other end, and the clamping portion and the clamping slot can be clamped together so that the bar punching sheets are stacked and bent and enclosed to form the stator core.

[0005] In one embodiment, the stator core has a first state and a second state. In the first state, the stator core is formed by stacking bar-shaped punching sheets in a bar shape. In the second state, the clamping portion and the clamping groove are clamped together.

[0006] In one embodiment, the stator assembly further includes a stator winding, and when the stator core is in the first state, the stator winding is wound on the stator teeth.

[0007] In one embodiment, the stator yoke includes a plurality of yoke parts connected in sequence, the stator teeth are arranged on the yoke parts, and the stator yoke has a relative inner surface and an outer surface, and the inner surface is located on the side close to the stator teeth; in the first state, an avoidance groove is provided between two adjacent yoke parts, and the notch of the avoidance groove is arranged toward the inner surface.

[0008] In one embodiment, the avoidance groove is gradually expanded in a direction from the outer surface to the inner surface.

[0009] In one embodiment, the expansion angle of the avoidance groove ranges from 30° to 70°.

[0010] In one embodiment, an avoidance hole is formed between two adjacent yokes, the avoidance hole is communicated with the avoidance groove and is located on a side of the avoidance groove away from the notch.

[0011] In one embodiment, the diameter of the avoidance hole ranges from 3 mm to 8 mm.

[0012] In one embodiment, the distance between the avoidance hole and the outer surface is L, which satisfies 1mm≤L≤10mm.

[0013] The utility model also proposes a motor, the motor includes a housing, a rotor assembly and the aforementioned stator assembly; the rotor assembly includes a rotor core, the stator core of the stator assembly cooperates with the rotor core, and the stator assembly and the housing are injection molded as one. The stator assembly includes a stator core, the stator core includes a stator yoke and a plurality of stator teeth arranged on the stator yoke, and a winding slot is formed between two adjacent stator teeth; the stator core is formed by stacking and bending strips, one end of the stator yoke is provided with a clamping portion, and the other end is provided with a clamping slot, the clamping portion and the clamping slot can be clamped and matched, so that the strips are stacked and bent to form the stator core.

[0014] In one embodiment, the motor further comprises a bearing cover, and the bearing cover, the housing and the stator core are injection molded as one body.

[0015] In one embodiment, the housing is made of non-metallic material.

[0016] In one embodiment, the housing is made of BMC material.

[0017] In one embodiment, the motor further includes a connecting member, and the rotor assembly further includes a rotor shaft, wherein the rotor shaft is connected to the rotor core; the connecting member is connected to the casing, and the rotor shaft at least partially passes through the connecting member.

[0018] The utility model also proposes a booster pump, the booster pump includes a pump head and the aforementioned motor, the connecting piece of the motor is connected to the pump head. The motor includes the aforementioned stator assembly. The stator assembly includes a stator core, the stator core includes a stator yoke and a plurality of stator teeth arranged on the stator yoke, and a winding slot is formed between two adjacent stator teeth; the stator core is formed by stacking strip punching sheets and bending them together, one end of the stator yoke is provided with a clamping portion, and the other end is provided with a clamping slot, the clamping portion and the clamping slot can be clamped together, so that the strip punching sheets are stacked and bent and surrounded to form the stator core.

[0019] In one embodiment, the booster pump further includes a mounting seat, the mounting seat has a mounting position, the booster pump is arranged at the mounting position, and the mounting seat is connected to the connecting member.

[0020] In one embodiment, the boost pump further includes a fastener, which is disposed at the mounting position and away from the connecting member. The fastener and the mounting seat enclose a fastening space for accommodating the boost pump, so that the boost pump can be clamped on the mounting seat.

[0021] The technical solution of the utility model is to stack a plurality of strip punching sheets to a specified size, and then perform winding and other steps, and then bend and enclose the stator after winding to form a stator core, and make the clamping parts and the clamping grooves at the two ends of the stator yoke clamped together to improve the stability of the connection of the strip punching sheets after bending and enclosing. The whole process of making the stator core is simple and fast to operate, does not require too many cumbersome steps, and improves the production efficiency of the stator assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of a stator assembly of the utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the partial structure of the stator assembly;

[0025] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0026] Figure 4 This is a schematic structural diagram of an embodiment of a booster pump of the utility model;

[0027] Figure 5 for Figure 4 Cutaway view of the boost pump with the mount removed;

[0028] Figure 6 for Figure 4 Schematic diagram of the structure of the mounting base and fasteners.

[0029] Description of Figure Numbers:

[0030]

[0031]

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0036] The utility model provides an embodiment of a stator assembly, which can be used for a brushed motor or a brushless motor. The brushed motor or brushless motor using the stator assembly can be applied to products such as water pumps, water purification equipment, refrigeration equipment, and automobiles. In the prior art, the production process of the stator assembly is usually to first punch out stator punching sheets through a stamping process, and then stack the punched stator punching sheets to a specified size to form a stator core, and then perform subsequent insulation, winding and other processes. The entire process is relatively complicated, and when the processed stator core is wound, the slot fill rate of the stator winding will decrease due to the width of the winding slot after forming, which will have a certain impact on the motor efficiency.

[0037] See also Figure 1 and Figure 2In one embodiment of the utility model, the stator assembly 100 includes a stator core 100a, and the stator core 100a includes a stator yoke 110 and a plurality of stator teeth 120 arranged on the stator yoke 110, and a winding slot 130 is formed between two adjacent stator teeth 120; the stator core 100a is formed by stacking and bending strips, and a clamping portion 111 is provided at one end of the stator yoke 110, and a clamping slot 112 is provided at the other end, and the clamping portion 111 and the clamping slot 112 can be clamped together, so that the strip punching sheets are stacked and bent to form the stator core 100a.

[0038] Specifically, the stator core 100a is formed by axially stacking a plurality of bar-shaped punching sheets, and a stator yoke 110, a stator tooth 120 and a winding groove 130 are provided on each bar-shaped punching sheet. The stator tooth 120 is provided on the stator yoke 110, and a winding groove 130 is formed between two adjacent stator teeth 120, so that the stator winding 100b can be wound on the stator tooth 120 and located in the winding groove 130, so as to generate a magnetic field for the rotor assembly 300 to realize the stator function. It should be particularly emphasized that a clamping portion 111 is provided at one end of the stator yoke 110, and a clamping groove 112 is provided at the other end. The stator core 100a is formed by stacking and bending the bar-shaped punching sheets. Therefore, when producing the stator core 100a, after the bar-shaped punching sheets are stacked, winding and other steps can be performed first, and then the stator after winding is bent and enclosed to form the stator core 100a, and the clamping portions 111 and the clamping grooves 112 at the two ends of the stator yoke 110 are clamped together to improve the stability of the connection of the bar-shaped punching sheets after bending and enclosing. In this way, the entire process of making the stator core 100a is simple and fast to operate, does not require too many cumbersome steps, and improves the production efficiency of the stator assembly 100. Furthermore, after the bar-shaped punching sheets are stacked and bent and enclosed to form the stator core 100a, the connection points at both ends can also be welded to further ensure the stability of the connection of the bar-shaped punching sheets after bending and enclosing.

[0039] The technical solution of the utility model is to stack a plurality of strip-shaped punching sheets to a specified size, and then perform steps such as winding, and then bend and enclose the stator after winding to form the stator core 100a, and make the clamping parts 111 and the clamping grooves 112 at the two ends of the stator yoke 110 clamp together to improve the stability of the connection of the strip-shaped punching sheets after bending and enclosing. The whole process of making the stator core 100a is simple and fast, does not require too many cumbersome steps, and improves the production efficiency of the stator assembly 100.

[0040] See also Figure 1 and Figure 2In one embodiment, the stator core 100a has a first state and a second state. In the first state, the stator core 100a is arranged in a bar shape by stacking bar-shaped punching sheets. In the second state (this state is not shown in the figure), the clamping portion 111 and the clamping slot 112 are clamped together. Specifically, when the stator core 100a is in the first state, the stator core 100a at this time has been stacked to a specified size by a plurality of bar-shaped punching sheets, and is arranged in a bar shape (i.e., a straight line). When the stator core 100a is in the second state, the bar-shaped stator core 100a is enclosed, and the clamping portion 111 and the clamping slot 112 are clamped together. It should be noted that the stator assembly 100 also includes a stator winding 100b. When the stator core 100a is in the first state, the stator winding 100b is wound on the stator teeth 120. Specifically, the step of winding the stator winding 100b of the stator core 100a is performed and completed when the stator core 100a is in the first state. Because the width of the notch of the winding slot 130 of the stator core 100a in the first state is greater than the width of the notch of the winding slot 130 of the stator core 100a in the second state, the wider notch can increase the number of turns of the winding coil, reduce the gap between two adjacent windings, and increase the slot fill rate, thereby improving the efficiency of the motor 10 using the stator assembly 100.

[0041] See also Figure 3 In one embodiment, the stator yoke 110 includes a plurality of yoke portions 113 connected in sequence, the stator teeth 120 are disposed on the yoke portions 113, and the stator yoke 110 has an inner surface 114 and an outer surface 115 relative to each other, and the inner surface 114 is located on a side close to the stator teeth 120; in a first state, an avoidance groove 116 is provided between two adjacent yoke portions 113, and the notch of the avoidance groove 116 is disposed toward the inner surface 114.

[0042] Specifically, the stator teeth 120 are arranged on the yoke 113 and connected to the middle part of the yoke 113. The number of the stator teeth 120 is consistent with the number of the yokes 113. Each yoke 113 is provided with a stator tooth 120, and a plurality of stator teeth 120 are arranged on the same side of the yoke 113. A winding groove 130 is formed between two adjacent stator teeth 120, and the winding groove 130 is used to accommodate the winding of the stator winding 100b and avoid the winding. The stator yoke 110 has an inner surface 114 and an outer surface 115 opposite to each other, and the inner surface 114 is located on the side close to the stator teeth 120; when the stator core 100a is in the first state, an avoidance groove 116 is formed between two adjacent yokes 113, and the notch of the avoidance groove 116 is arranged toward the inner surface 114. It is taken into consideration here that when the bar-shaped stator core 100a is enclosed into a ring-shaped stator core 100a, since the stator core 100a is made of hard material, it is necessary to design an avoidance groove 116 between two adjacent yokes 113, that is, where the stator yoke 110 needs to be bent, to ensure that the bar-shaped stator core 100a can be enclosed into a ring-shaped stator core 100a.

[0043] Furthermore, the avoidance groove 116 is gradually expanded in the direction from the outer surface 115 to the inner surface 114. With such a design, the avoidance groove 116 which is gradually expanded can have no excessive gaps after the bar-shaped stator core 100a is enclosed into the annular stator core 100a. Preferably, when the bar-shaped stator core 100a is enclosed into the annular stator core 100a, the groove walls of the avoidance groove 116 are in close contact with each other.

[0044] Furthermore, the angle range of the expansion angle 116a of the avoidance groove 116 is 30°-70°. The angle range of the expansion angle 116a of the avoidance groove 116 can be adjusted according to the number of teeth of the stator teeth 120 and the number of slots of the winding slots 130. The angle of the expansion angle 116a of the avoidance groove 116 can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, for example.

[0045] See also Figure 3 In one embodiment, an avoidance hole 117 is formed between two adjacent yokes 113, and the avoidance hole 117 is connected to the avoidance groove 116 and is located on the side of the avoidance groove 116 away from the notch. Specifically, an avoidance hole 117 connected to the avoidance groove 116 is provided between two adjacent yokes 113, and the avoidance hole 117 is located on the side of the avoidance groove 116 away from the notch, so as to reduce the stress at the bottom of the avoidance groove 116 and improve the overall structural strength of the stator yoke 110. The shape of the avoidance hole 117 can be circular, elliptical, etc., and there is no specific limitation on this.

[0046] Furthermore, the aperture range of the avoidance hole 117 is 3mm-8mm. Specifically, since the thickness of the stator yoke 110 itself (i.e., the distance between the inner surface 114 and the outer surface 115) is certain, in order to make the arrangement of the avoidance groove 116 and the avoidance hole 117 reasonable and not affect the strength of the stator yoke 110, the aperture range of the avoidance hole 117 is limited to 3mm-8mm. The aperture of the avoidance hole 117 can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, for example.

[0047] See also Figure 3 In one embodiment, the distance between the avoidance hole 117 and the outer surface 115 is L, which satisfies 1mm≤L≤10mm. Similarly, in order to ensure the structural strength of the connection between two adjacent yokes 113 and the stability of the connection, the distance between the avoidance hole 117 and the outer surface 115 is limited to between 2mm-10mm. Among them, the value of L can be 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm for example. Taking into account the errors in the production of the stator core 100a, if the actual measured value of L has a small error with the aforementioned example value of L, it can be approximately equal to the aforementioned exemplary value.

[0048] See also Figure 4 and Figure 5 The utility model also provides a motor 10, the motor 10 includes a housing 200, a rotor assembly 300 and the aforementioned stator assembly 100; the rotor assembly 300 includes a rotor core 310, the stator core 100a of the stator assembly 100 cooperates with the rotor core 310, and the stator assembly 100 and the housing 200 are injection molded as one. The specific structure of the stator assembly 100 refers to the above embodiment. Since the motor 10 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments.

[0049] Specifically, the type of the motor 10 can be an outer rotor motor 10 or an inner rotor motor 10. The stator core 100a and the rotor core 310 of the motor cooperate to realize the function of the motor 10. The stator assembly 100 includes a stator core 100a, and the stator core 100a includes a stator yoke 110 and a plurality of stator teeth 120 arranged on the stator yoke 110, and a winding groove 130 is formed between two adjacent stator teeth 120; the stator core 100a is formed by stacking strip punching sheets and bending them together, and a clamping portion 111 is provided at one end of the stator yoke 110, and a clamping groove 112 is provided at the other end, and the clamping portion 111 and the clamping groove 112 can be clamped and matched, so that the strip punching sheets are stacked and bent and enclosed to form the stator core 100a. The stator assembly 100 and the housing 200 are injection molded as one body, so that the live parts of the motor 10 can be sealed to form a closed whole, avoiding the occurrence of occasional failures. When the motor 10 of the utility model is applied to the booster pump 1 product, it can also avoid the situation where the pump head 20 of the booster pump 1 leaks and flows into the motor 10 to cause safety hazards. Furthermore, after the gap between the stator core 100a and the stator winding 100b is filled with a material with excellent heat dissipation performance, it is beneficial to the heat dissipation of the motor 10 and thus improve the efficiency of the motor 10.

[0050] See also Figure 4 and Figure 5 In one embodiment, the motor 10 further includes a bearing cover 400, and the bearing cover 400, the housing 200 and the stator core 100a are injection molded as one. Specifically, the motor 10 of the utility model is an inner rotor motor 10, and a bearing is provided at its end. When the stator core 100a and the housing 200 are injection molded, the bearing cover 400, the housing 200 and the stator core 100a can also be injection molded as one, and when the motor 10 is assembled, the stator core 100a that is plastic-sealed as one is directly assembled. The housing 200 and the bearing cover 400 can be sleeved on the outside of the rotor core 310, and the bearing cover 400 is arranged corresponding to the bearing to protect the bearing.

[0051] In one embodiment, the material of the housing 200 is a non-metallic material. Furthermore, the material of the housing 200 is a BMC material. Specifically, the BMC material is the abbreviation of Bulk (Dough) molding compounds, that is, bulk molding compounds, also known as unsaturated polyester bulk molding compounds. Its main raw materials are GF (chopped glass fiber), UP (unsaturated resin), MD (filler calcium carbonate) and various additives that are fully mixed to form a bulk prepreg.

[0052] BMC materials have the following properties:

[0053] ①Excellent mechanical properties: BMC products have excellent mechanical strength and rigidity, and their tensile strength and modulus are higher than those of general plastic materials. BMC products also have good wear resistance and impact resistance, and can replace traditional metal materials in mechanical design and production, achieving the effect of saving materials and reducing costs. ②Excellent heat resistance and adhesion: BMC products still have good mechanical properties and stability at high temperatures, and can be used in the range of -20 degrees Celsius to 180 degrees Celsius. In addition, because BMC is a material that is thermosetting and cured in the mold, its surface adhesion function is also very good, and it can be used to make some parts with complex shapes and high precision requirements. ③Excellent corrosion resistance and barrier properties: BMC products have good chemical corrosion resistance and can be used to make some parts that need to be exposed to corrosive substances such as acids and alkalis. In addition, BMC has good density and barrier properties, and can be used to make liquid storage containers such as oil tanks and water tanks, achieving the effect of being impermeable, leak-proof, and anti-pollution. ④Excellent electrical insulation and corrosion resistance: BMC products have excellent electrical insulation and corrosion resistance, and can be widely used in electrical appliances, electronics, communications and other fields. BMC's corrosion resistance also makes it an excellent coating material, which can replace traditional organic coatings to achieve the purpose of saving materials and improving coating effects. ⑤Simple manufacturing process and low cost: BMC products have a simple manufacturing process, a high degree of automation, high production efficiency and one-time molding rate, which can reduce manufacturing costs. BMC products can also be used in a variety of manufacturing processes such as mold injection molding and composite material molding, and can be applied to a variety of complex parts and molds.

[0054] In general, BMC products have the advantages of excellent mechanical properties, heat resistance, corrosion resistance, and outstanding electrical insulation, which can achieve the goals of energy conservation and emission reduction, reduce costs, and improve quality.

[0055] See also Figure 4 and Figure 5 In one embodiment, the motor 10 further includes a connector 500, the rotor assembly 300 further includes a rotor shaft 320, and the rotor shaft 320 is connected to the rotor core 310; the connector 500 is connected to the housing 200, and the rotor shaft 320 at least partially passes through the connector 500. Specifically, the motor 10 further includes a connector 500, and the motor 10 can be connected to other structures through the connector 500.

[0056] See also Figure 4 and Figure 5The utility model also provides a booster pump 1, the booster pump 1 includes a pump head 20 and the aforementioned motor 10, and the connecting piece 500 of the motor 10 is connected to the pump head 20. The motor 10 includes the aforementioned stator assembly 100. The specific structure of the motor 10 refers to the above embodiment. Since the booster pump 1 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments.

[0057] Specifically, the booster pump 1 includes a pump head 20, on which a water inlet 21 and a water outlet 22 are provided, and a pumping assembly is also provided in the pump head 20, and the pumping assembly can be a diaphragm pump assembly, and the pumping assembly is connected to the rotor shaft 320 of the motor 10. When the motor 10 is working, the rotor shaft 320 rotates to drive the pumping assembly to work, so as to achieve the function of pumping water. In this embodiment, the type of the motor 10 is a brushless motor, which is composed of a motor body and a driver, and is a typical mechatronics product. Since the brushless motor is operated in an automatic control mode, it will not add a starting winding to the rotor like the synchronous motor 10 that is started under heavy load under variable frequency speed regulation, and it will not produce oscillation and loss of step when the load suddenly changes. The permanent magnets of small and medium-capacity brushless motors now mostly use rare earth neodymium iron boron (Nd-Fe-B) materials with high magnetic energy levels. Therefore, the volume of the rare earth permanent magnet brushless motor is one frame size smaller than that of the three-phase asynchronous motor with the same capacity, which can further reduce the volume of the booster pump 1.

[0058] Compared with the brushed motor 10, the brushless motor has removed the brushes. The most direct change is that there are no sparks generated when the brushed motor 10 is running, which greatly reduces the interference of the sparks on the remote control radio equipment. At the same time, the brushless motor has no brushes, and the friction is greatly reduced during operation, which allows smooth operation and much lower noise. Furthermore, the brushless motor has no brushes, and the wear of the brushless motor is mainly concentrated on the bearings. From a mechanical point of view, the brushless motor is almost a maintenance-free motor. When necessary, only some dust removal maintenance is required. It is easy to maintain and has a long life.

[0059] See also Figure 4 and Figure 6 In one embodiment, the booster pump 1 further includes a mounting seat 30 , the booster pump 1 mounting seat 30 has a mounting position 31 , the booster pump 1 is disposed at the mounting position 31 , and the mounting seat 30 is connected to the connecting member 500 .

[0060] It is understandable that the mounting seat 30 is the mounting seat 30 of the booster pump 1. When the booster pump 1 is installed on the mounting seat 30, the mounting seat 30 with the booster pump 1 installed can be fixed in the water purification equipment, or the mounting seat 30 of the booster pump 1 can also be used as a component of the water purification equipment. The parts or processing modules in the water purification equipment can also be installed on the mounting seat 30, which is not specifically limited here. The mounting seat 30 is made of hard material. As for the type of hard material, it can be hard materials such as ABS, HIPS, PP, PC, or metal or alloy materials, etc., which are not specifically limited here. The shape of the mounting seat 30 can be rectangular, circular, polygonal, combined shape, special shape, etc., which can be selected and designed according to actual use requirements. The mounting seat 30 has a mounting position 31, which can be a groove-shaped, a boss-shaped setting, or a combination of a groove and a boss. It is not specifically limited here, and only the mounting position 31 needs to be able to be installed for the booster pump 1.

[0061] See also Figure 6 Furthermore, the booster pump 1 also includes a fastener 40, which is arranged at the mounting position 31 and away from the connecting member 500. The fastener 40 and the mounting seat 30 enclose a fastening space 41 for accommodating the booster pump 1, so as to clamp the booster pump 1 on the mounting seat 30.

[0062] Specifically, the fastener 40 is arranged at the mounting position 31, and the fastener 40 can be fixedly connected to the mounting seat 30, and of course, the fastener 40 can also be detachably connected to the mounting seat 30. It is only necessary that the fastener 40 can enclose the mounting seat 30 to form a fastening space 41, and the booster pump 1 can be placed in the fastening space 41 for limiting. At this time, the fastener 40 clamps the booster pump 1 on the mounting seat 30, that is, it is sleeved outside the booster pump 1, so that the booster pump 1 cannot shake relative to the mounting seat 30, and the booster pump 1 and the booster pump 1 form a whole, which improves the stability of the booster pump 1 installed on the mounting seat 30, thereby reducing the noise generated by the working vibration of the booster pump 1.

[0063] It should be noted that, since the stator assembly 100 and the housing 200 are integrally formed by injection molding, and the material of the housing 200 is BMC material, it is not convenient to punch holes in the housing 200 to connect the mounting seat 30 and the booster pump 1 together, and the booster pump 1 and the mounting seat 30 can be fixedly connected together by punching holes in the connecting member 500. At this time, since the housing 200 has a certain length, when the motor 10 is working, the end of the housing 200 away from the connecting member 500 will vibrate or shake, thereby generating noise. Therefore, in this embodiment, the fastener 40 is optionally arranged at the mounting position 31 and away from the connecting member 500.

[0064] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A stator assembly, characterized in that: The stator assembly includes a stator core, which includes a stator yoke and a plurality of stator teeth arranged on the stator yoke, and a winding slot is formed between two adjacent stator teeth; the stator core is formed by stacking and bending bar punching sheets, one end of the stator yoke is provided with a clamping portion, and the other end is provided with a clamping slot, and the clamping portion and the clamping slot can be clamped together to form the stator core by stacking and bending the bar punching sheets.

2. The stator assembly according to claim 1, characterized in that The stator core has a first state and a second state. In the first state, the stator core is formed by stacking bar-shaped punching sheets in a bar shape. In the second state, the clamping portion and the clamping groove are clamped and matched.

3. The stator assembly according to claim 2, characterized in that The stator assembly further includes a stator winding, and when the stator core is in the first state, the stator winding is wound on the stator teeth.

4. The stator assembly according to claim 2, characterized in that The stator yoke includes a plurality of yoke parts connected in sequence, the stator teeth are arranged on the yoke parts, and the stator yoke has an inner surface and an outer surface relative to each other, and the inner surface is located on a side close to the stator teeth; in the first state, an avoidance groove is provided between two adjacent yoke parts, and the notch of the avoidance groove is arranged toward the inner surface.

5. The stator assembly according to claim 4, characterized in that The avoidance groove is gradually expanded in a direction from the outer surface to the inner surface.

6. The stator assembly according to claim 5, characterized in that The expansion angle of the avoidance groove ranges from 30° to 70°.

7. The stator assembly according to claim 4, characterized in that An escape hole is formed between two adjacent yokes, the escape hole is communicated with the escape groove and is located at a side of the escape groove away from the notch.

8. The stator assembly according to claim 7, characterized in that The diameter of the avoidance hole ranges from 3mm to 8mm.

9. The stator assembly according to claim 7, characterized in that The distance between the avoidance hole and the outer surface is L, which satisfies 1mm≤L≤10mm.

10. A motor, characterized in that: include: chassis; A rotor assembly including a rotor core; and The stator assembly according to any one of claims 1 to 9, wherein the stator core of the stator assembly cooperates with the rotor core, and the stator assembly and the housing are injection molded as one piece.

11. The motor according to claim 10, characterized in that The motor further comprises a bearing cover, wherein the bearing cover, the housing and the stator core are integrally formed by injection molding.

12. The motor according to claim 10, characterized in that The casing is made of non-metallic material.

13. The motor according to claim 12, characterized in that The casing is made of BMC material.

14. The motor according to claim 10, characterized in that The motor further includes a connecting member, and the rotor assembly further includes a rotor shaft, wherein the rotor shaft is connected to the rotor core; the connecting member is connected to the housing, and the rotor shaft at least partially passes through the connecting member.

15. A booster pump, characterized in that: include: Pump head; as well as The motor according to any one of claims 10 to 14, wherein the connecting member of the motor is connected to the pump head.

16. The booster pump according to claim 15, characterized in that: The booster pump further comprises a mounting seat, the mounting seat has a mounting position, the booster pump is arranged at the mounting position, and the mounting seat is connected to the connecting member.

17. The booster pump according to claim 16, characterized in that: The boost pump further comprises a fastener, which is arranged at the installation position and away from the connecting member. The fastener and the mounting seat are combined to form a fastening space for accommodating the boost pump, so that the boost pump can be clamped on the mounting seat.

Images