CN213693254U - Stator, motor and water pump - Google Patents

Abstract

The embodiment of the utility model discloses stator, including iron core and winding, the winding is around establishing outside the iron core, and the iron core includes a plurality of range upon range of silicon steel sheet. The silicon steel sheet includes central part and a plurality of branch portion, and a plurality of branch portions are connected and the shaping as an organic whole with the central part, and a plurality of branch portions set up along the circumference interval of central part. The branch portion includes a first branch extending in a radial direction of the central portion and a second branch extending in a circumferential direction of the central portion, and the winding is wound around the first branch. Wherein, the second branch is equipped with the welding mouth from the periphery side of central part, and the welding mouth on a plurality of silicon steel sheets constitutes the weld groove jointly, and a plurality of silicon steel sheets pass through the solder joint in the weld groove along the range upon range of direction welded fastening of silicon steel sheet, have effectively avoided the marginal perk of outer silicon steel sheet, have guaranteed the outward appearance of iron core complete, have promoted the performance of stator.

Description

Stator, motor and water pump

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of electric machines, in particular to stator, motor and water pump.

[ background of the invention ]

The stator is an indispensable component in the water pump, and directly influences key attributes such as life-span, efficiency of water pump.

The stator comprises an iron core and a winding, is formed by overlapping multiple layers of silicon steel sheets, and is used as a coil framework after deburring or electrophoresis treatment and the like. In the existing micro water pump, silicon steel sheets in a stator only depend on riveting pressing acting force, and the head of claw teeth of the outer layer silicon steel sheet warps and deforms in the mechanical deburring process.

Therefore, there is a need to provide a new stator to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a stator, motor and water pump can solve the outer silicon steel sheet of stator and warp the problem in the processing.

The purpose of the utility model is realized by adopting the following technical scheme: a first aspect of the embodiments of the present invention provides a stator, including an iron core and a winding, where the winding is wound outside the iron core, and the iron core includes a plurality of stacked silicon steel sheets; the silicon steel sheet comprises a central part and a plurality of branch parts, the branch parts are connected with the central part and are integrally formed, and the branch parts are arranged at intervals along the circumferential direction of the central part; the single branch part comprises a first branch extending along the radial direction of the central part and a second branch extending along the circumferential direction of the central part, and the winding is wound on the first branch;

the periphery of the second branch, which is away from the central part, is provided with a welding port; and a plurality of welding openings on the silicon steel sheets jointly form a welding groove, and the silicon steel sheets are welded and fixed along the laminating direction of the silicon steel sheets through welding spots in the welding groove.

In the stator provided by the embodiment of the present invention, the plurality of branch portions are uniformly distributed along the circumferential direction of the central portion.

The embodiment of the utility model provides an in the stator, the second branch with first branch is connected perpendicularly, the welding mouth sets up the second branch with the hookup location of first branch.

The embodiment of the utility model provides an in the stator, a plurality of silicon steel sheets include first silicon steel sheet, first silicon steel sheet includes relative first face and second face, adjacent two first face and the second face butt of another one of them of first silicon steel sheet.

In the stator provided by the embodiment of the present invention, the first surface is provided with a convex portion, and the second surface is provided with a concave portion in riveting fit with the convex portion; the convex part is correspondingly accommodated in the concave part.

In the stator provided by the embodiment of the present invention, the concave portion and the convex portion are both disposed on the first branch.

In the stator provided by the embodiment of the present invention, the number of the first branches is a multiple of the number of the concave portions.

In the stator provided by the embodiment of the present invention, the plurality of silicon steel sheets include a second silicon steel sheet, and the second silicon steel sheet is provided with a through hole adapted to the convex portion; and the second silicon steel sheet is abutted against the first surface of the first silicon steel sheet on the outermost side in the iron core.

The embodiment of the utility model provides a second aspect provides a motor, include:

a stator as described above;

and the rotor is arranged on the outer peripheral side of the stator, and the stator is used for driving the rotor to rotate.

A third aspect of the embodiments of the present invention provides a water pump, including a pump body and the motor as described above, where the pump body has an inner cavity, a liquid inlet communicating with the inner cavity, and a liquid outlet communicating with the inner cavity, and the motor is installed on the pump body to drive liquid to enter the inner cavity from the liquid inlet and to be discharged from the liquid outlet;

the motor comprises an impeller, the impeller is arranged in the inner cavity, the pump body is provided with a rotating shaft, the impeller is rotatably connected with the rotating shaft, the rotor is installed on the impeller, and the stator is installed on the pump body.

The utility model discloses embodiment sets up the welding mouth at the second branch periphery side from the central part for prior art, and the welding mouth on a plurality of silicon steel sheets constitutes the welding groove that is used for holding the solder joint jointly for the outward flange of a plurality of silicon steel sheets can pass through welded connection, has effectively avoided outer silicon steel sheet edge perk, has guaranteed that the outward appearance of iron core is complete, has promoted the performance of stator.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a stator according to an embodiment of the present invention;

FIG. 2 is an exploded view of the stator of FIG. 1;

fig. 3 is a schematic structural view of the core of fig. 1;

fig. 4 is an exploded view of the core of fig. 3;

fig. 5 is a schematic structural view of the first silicon steel sheet in fig. 4;

fig. 6 is a schematic structural view of the first silicon steel sheet in fig. 4 at another angle;

fig. 7 is a schematic structural view of the second silicon steel sheet in fig. 4;

fig. 8 is a schematic structural diagram of a water pump according to an embodiment of the present invention;

fig. 9 is an exploded view of the water pump of fig. 8.

The figures show that:

1. a water pump;

1000. a motor;

10. a stator; 100. an iron core; 110. silicon steel sheets; 110a, a first silicon steel sheet; 110b, a second silicon steel sheet; 111. a branching section; 1111. a first branch; 1112. a second branch; 112. a central portion; 113. a convex portion; 114. a recess; 115. a through hole; 116. welding the opening; 120. welding spots; 101. welding a groove; 102. positioning a groove; 200. a winding;

20. a rotor; 30. an impeller;

2000. a pump body; 210. an upper cover; 220. a base; 230. a seal ring; 2001. an inner cavity; 2002. a liquid inlet; 2003. a liquid outlet; 2004. mounting grooves; 2005. an annular groove; 2006. accommodating grooves; 2007. a wiring groove;

3000. a circuit board; 4000. a cable.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Referring to fig. 1 to 4, a first aspect of the present invention provides a stator 10, where the stator 10 includes an iron core 100 and a winding 200, and the winding 200 is wound outside the iron core 100. The iron core 100 includes a plurality of laminated silicon steel sheets 110. The silicon steel sheet 110 includes a central portion 112 and a plurality of branch portions 111, the plurality of branch portions 111 are connected to the central portion 112 and integrally formed, the plurality of branch portions 111 are spaced apart from each other in a circumferential direction of the central portion 112, and the same number of windings 200 as the number of the branch portions 111 are wound around the branch portions 111. Specifically, the branch portion 111 includes a first branch 1111 extending in a radial direction of the central portion 112 and a second branch 1112 extending in a circumferential direction of the central portion 112, the winding 200 is wound around the first branch 1111, and both ends of the winding 200 abut against the second branch 1112 and the central portion 112.

The welding openings 116 are formed in the outer periphery of the second branch 1112, which is away from the central portion 112, the welding openings 116 on the silicon steel sheets 110 jointly form a welding groove 101, and the silicon steel sheets 110 are welded and fixed along the stacking direction of the silicon steel sheets 110 through welding points 120 located in the welding groove 101.

It can be understood that, when the iron core 100 is formed by laminating a plurality of silicon steel sheets 110, the edges of the outer silicon steel sheets 110 are easily lifted during the machining process of the iron core 100, such as mechanical deburring, and the like, so as to affect the appearance and performance of the stator 10.

Through adopting above technical scheme, set up welding mouth 116 at the periphery side that second branch 1112 deviates from central part 112, welding mouth 116 on a plurality of silicon steel sheet 110 constitutes the welding groove 101 that is used for holding solder joint 120 jointly for second branch 1112 of a plurality of silicon steel sheet 110 can pass through welded connection, has effectively avoided outer silicon steel sheet 110 edge to stick up, has guaranteed that the outward appearance of iron core 100 is complete, has promoted the performance of stator 10.

It can be understood that, in order to meet the performance requirement of the stator 10, the silicon steel sheet 110 needs to be provided with a plurality of branches 111, such as 4, 6, 8, or 9. The number of the branch portions 111 depends on the performance of the stator 10, and the embodiment of the present invention is not limited thereto.

In an alternative embodiment, the plurality of branch portions 111 are evenly distributed around the central portion 112. It can be understood that the plurality of branches 111 are spaced at equal intervals, so that the stator 10 generates uniform magnetic induction lines, and the working efficiency of the stator 10 is enhanced.

Illustratively, the second branch 1112 is perpendicular to the first branch 1111, the profile of the outer peripheral side of the second branch 1112 away from the branch portion 111 is an arc, and the center of the arc coincides with the center of the center portion 112, so that the overall shape of the silicon steel sheet 110 is circular, which is convenient for the installation and assembly of the iron core 100.

It can be understood that a plurality of silicon steel sheets 110 are connected by laser welding at the welding openings 116. The thickness limitation of silicon steel sheet 110 in stator 10 makes ordinary welding mode can not satisfy the welding demand of silicon steel sheet 110, and laser welding heat affected zone metallography change scope is little, and the deformation roof beam that leads to because of heat-conduction is low, and the laser beam can focus on very little region simultaneously, can weld small-size and closely spaced part, when welding thin material or thin footpath wire rod, can not have the puzzlement of meltback like electric arc welding.

Referring to fig. 3 to fig. 7, in an alternative embodiment, the welding port 116 is disposed at a connecting position of the second branch 1112 and the first branch 1111. Specifically, the first branch 1111 is connected to one side of the middle position of the second branch 1112, and the welding port 116 is disposed on the other side of the middle position of the second branch 1112. It can be understood that the welding port 116 is disposed at the connecting position of the second branch 1112 and the first branch 1111, and the welding port 116 is supported by the first branch 1111 and the second branch 1112 at the same time, so as to effectively ensure the strength of the welding port 116 and the stability of the branch portion 111 during and after welding.

It can be understood that the first branch 1111 is connected to the middle side of the second branch 1112, which can effectively limit the extension length of the second branch 1112, and prevent one end of the second branch 1112 from being too far away from the first branch 1111 to be deformed, tilted, etc. during the processing.

Referring to fig. 4 to 7, in an alternative embodiment, the iron core 100 includes first silicon steel sheets 110a, the first silicon steel sheets 110a include first surfaces and second surfaces opposite to each other, and the first surface of one of the two adjacent first silicon steel sheets 110a abuts against the second surface of the other one of the two adjacent first silicon steel sheets 110 a. The first surface is provided with a convex part 113, and the second surface is provided with a concave part 114 which is riveted with the convex part 113. The convex portion 113 is accommodated in the concave portion 114. It can be understood that the first silicon steel sheets 110a are fixed by applying a pressing force to the first and second surfaces of the first silicon steel sheets 110a in a form of a riveting fit.

Specifically, the thickness of the protruding portion 113 is not greater than the thickness of the silicon steel sheets 110, so as to avoid the occurrence of a gap between the adjacent first silicon steel sheets 110a and the influence on the performance of the stator 10.

Referring to fig. 4-6, in an alternative embodiment, the recess 114 and the protrusion 113 are disposed on the first branch 1111. It is understood that the concave portion 114 and the convex portion 113 can be disposed at other positions, such as the second branch 1112 or the central portion 112, and the present invention is not limited thereto, and the connection strength after two adjacent first silicon steel sheets 110a are stacked can be ensured.

Referring to fig. 4-6, in an alternative embodiment, the number of first branches 1111 is a multiple of the number of recesses 114. Specifically, the protrusions 113 and the recesses 114 need to be uniformly spaced to ensure stability of the press-riveting of the first silicon steel sheet 110a, while the number of the first branches 1111 is uniformly spaced, so that the number of the first branches 1111 is a multiple of the number of the recesses 114, such as one time, two times, or three times, etc. Exemplarily, the number of the first branches 1111 in the first silicon steel sheet 110a is 9, the number of the protrusions 113 and the recesses 114 is 3, and the number of the first branches 1111 is 3 times that of the recesses 114; the number of the first branches 1111 of the first silicon steel sheet 110a is 8, the number of the protrusions 113 and the recesses 114 is 4, and the number of the first branches 1111 is 2 times the number of the recesses 114.

Referring to fig. 4 and 7, in an alternative embodiment, the iron core 100 includes a second silicon steel sheet 110b, and the second silicon steel sheet 110b is provided with a through hole 115 adapted to the protrusion 113. It can be understood that, in the finally formed stator 10, the surface of the iron core 100 is required to be flat and smooth, and therefore, the convex portions 113 of the outermost first silicon steel sheet 110a in the plurality of stacked first silicon steel sheets 110a need to be covered and shielded, the second silicon steel sheet 110b is abutted against the first surface of the outermost first silicon steel sheet 110a in the iron core 100, the second surface of the outermost first silicon steel sheet 110a in the iron core 100 is abutted against the first surface of the adjacent first silicon steel sheet 110a, and the convex portions 113 of the outermost first silicon steel sheet 110a are located in the through holes 115, so that the surface of the iron core 100 of the finally formed stator 10 has no protrusion.

Referring to fig. 1 to 3, in an alternative embodiment, the iron core 100 includes a positioning groove 102, and the positioning groove 102 is disposed on an inner side surface of the iron core 100, for preventing the silicon steel sheets 110 from being dislocated during an assembling process, and improving an assembling efficiency of the iron core 100.

Referring to fig. 8 and 9, a second aspect of the present invention provides a motor 1000, including the stator 10 and the rotor 20 disposed on the outer peripheral side of the stator 10. The stator 10 is used to drive the rotor 20 to rotate.

Referring to fig. 8 and 9, a third aspect of the present invention provides a water pump 1, which includes a pump body 2000 and a motor 1000 as described above. The pump body 2000 has an inner cavity 2001, an inlet 2002 communicating with the inner cavity 2001, and an outlet 2003 communicating with the inner cavity 2001, and the motor 1000 is mounted on the pump body 2000 to drive liquid from the inlet 2002 into the inner cavity 2001 and out of the outlet 2003. The motor 1000 includes an impeller 30, the impeller 30 is disposed in the inner cavity 2001, the impeller 30 is rotatably connected to the pump body 2000, the rotor 20 is mounted on the impeller 30, and the stator 10 is mounted on the pump body 2000.

Specifically, the pump body 2000 includes a base 220, an upper cover 210 and a sealing ring 230, the upper cover 210 is provided with an annular groove 2005 surrounding an inner cavity 2001, and the sealing ring 230 is clamped between the base 220 and the upper cover 210 and is partially embedded in the annular groove 2005.

When the magnetic field generator operates, alternating current is supplied to the stator 10, according to the electromagnetic induction principle, the stator 10 generates a rotating magnetic field, the rotor 20 rotates under the action of ampere force in the rotating magnetic field, and the rotating rotor 20 drives the impeller 30 to rotate. Liquid enters the inner cavity 2001 from the liquid inlet 2002, rotates at a high speed under the driving of the impeller 30 and performs centrifugal motion, the liquid is thrown out from the liquid outlet 2003 when reaching the liquid outlet 2003, after the liquid is thrown out, the pressure in the inner cavity 2001 is reduced and is far lower than the atmospheric pressure, external fluid is supplemented into the inner cavity 2001 from the liquid inlet 2002 under the action of the atmospheric pressure, and the actions are repeatedly realized to realize the conveying of the liquid.

Because the stator 10 and the rotor 20 are interacted through electromagnetic force, direct connection is not needed, a mounting hole communicated with the inner cavity 2001 is not needed, and the fluid in the inner cavity 2001 can be prevented from leaking through the mounting hole.

A mounting groove 2004 is formed at a side of the base 220 facing away from the upper cover 210, and the stator 10 is inserted into the mounting groove 2004. By providing the mounting groove 2004 to accommodate the stator 10, the stator 10 does not increase the thickness of the entire pump body 2000, and the pump body 2000 is small in size.

The water pump 1 further includes a circuit board 3000 mounted to the base 220, the circuit board 3000 electrically connecting the stator 10 via a cable 4000. One side of the base 220 back to the upper cover 210 is provided with an accommodating groove 2006, and the circuit board 3000 is embedded in the accommodating groove 2006. In this embodiment, the circuit board 3000 is accommodated in the accommodating groove 2006 without being exposed, so that damage to components on the circuit board 3000 due to collision in a subsequent mounting process can be avoided, and the circuit board 3000 is accommodated in the accommodating groove 2006, so that the thickness of the whole pump body 2000 is not increased by the circuit board 3000, and the size of the pump body 2000 is small. Of course, the base 220 may not be provided with the receiving groove 2006, and the circuit board 3000 may be directly mounted on the outer surface of the base 220.

A side of the base 220 facing away from the upper cover 210 is provided with a routing groove 2007, the routing groove 2007 communicating the mounting groove 2004 and the receiving groove 2006, and the cable 4000 is disposed in the routing groove 2007. With this embodiment, the cable 4000 is routed in the routing groove 2007 without being exposed, so that the cable 4000 can be prevented from being broken by an external force, and moreover, the cable 4000 is routed in the routing groove 2007, so that the thickness of the whole pump body 2000 is not increased by the cable 4000, and the size of the pump body 2000 is small. Of course, the chassis 220 may not be provided with the cabling channel 2007, and the cable 4000 may be directly routed on the outer surface of the chassis 220.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A stator comprises an iron core and a winding, wherein the winding is wound outside the iron core, and the stator is characterized in that the iron core comprises a plurality of laminated silicon steel sheets; the silicon steel sheet comprises a central part and a plurality of branch parts, the branch parts are connected with the central part and are integrally formed, and the branch parts are arranged at intervals along the circumferential direction of the central part; the single branch part comprises a first branch extending along the radial direction of the central part and a second branch extending along the circumferential direction of the central part, and the winding is wound on the first branch;

the periphery of the second branch, which is away from the central part, is provided with a welding port; and a plurality of welding openings on the silicon steel sheets jointly form a welding groove, and the silicon steel sheets are welded and fixed along the laminating direction of the silicon steel sheets through welding spots in the welding groove.

2. The stator according to claim 1, wherein a plurality of the branch portions are uniformly distributed along a circumferential direction of the central portion.

3. The stator according to claim 1, wherein the second branch is perpendicularly connected to the first branch, and the welding port is provided at a connection position of the second branch to the first branch.

4. The stator according to claim 1, wherein the plurality of silicon steel sheets comprise first silicon steel sheets, each first silicon steel sheet comprises a first surface and a second surface which are opposite to each other, and the first surface of one of the two adjacent first silicon steel sheets abuts against the second surface of the other one of the two adjacent first silicon steel sheets.

5. The stator according to claim 4, wherein the first surface is provided with a convex portion, and the second surface is provided with a concave portion in riveted fit with the convex portion; the convex part is correspondingly accommodated in the concave part.

6. The stator of claim 5, wherein the recess and the protrusion are both disposed on the first branch.

7. The stator according to claim 5, wherein the number of the first branches is a multiple of the number of the recesses.

8. The stator according to claim 5, wherein the plurality of silicon steel sheets comprise a second silicon steel sheet, and the second silicon steel sheet is provided with a through hole matched with the convex part; and the second silicon steel sheet is abutted against the first surface of the first silicon steel sheet on the outermost side in the iron core.

9. An electric machine, comprising:

the stator of any one of claims 1-8;

and the rotor is arranged on the outer peripheral side of the stator, and the stator is used for driving the rotor to rotate.

10. A water pump comprising a pump body and a motor according to claim 9, the pump body having an internal cavity, a liquid inlet communicating with the internal cavity, and a liquid outlet communicating with the internal cavity, the motor being mounted to the pump body to drive liquid from the liquid inlet into the internal cavity and out of the liquid outlet;

the motor comprises an impeller, the impeller is arranged in the inner cavity, the pump body is provided with a rotating shaft, the impeller is rotatably connected with the rotating shaft, the rotor is installed on the impeller, and the stator is installed on the pump body.

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