CN112260423A - Stator punching sheet, stator core, stator, motor and air conditioning device - Google Patents
Stator punching sheet, stator core, stator, motor and air conditioning device Download PDFInfo
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- CN112260423A CN112260423A CN202011158164.9A CN202011158164A CN112260423A CN 112260423 A CN112260423 A CN 112260423A CN 202011158164 A CN202011158164 A CN 202011158164A CN 112260423 A CN112260423 A CN 112260423A
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- stator
- punching sheet
- connecting bridge
- face
- buffer
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The application relates to the technical field of motors in general, and particularly relates to a stator punching sheet, a stator core, a stator, a motor and an air conditioning device, wherein the stator punching sheet comprises a plurality of punching sheet monomers which are sequentially connected, a connecting bridge is arranged between every two adjacent punching sheet monomers, a groove is formed between the radial outer side of the connecting bridge and every two adjacent punching sheet monomers, the connecting bridge comprises a first side end surface and a second side end surface, the first side end surface comprises a first buffering surface which is convex towards the radial outer side, the second side end surface comprises a second buffering surface which is concave towards the radial outer side, the first buffering surface and the second buffering surface are used for bending and buffering of the connecting bridge, the damage of the connecting bridge in rounding is reduced, in the scheme, the stator punching sheet can be reversely bent, the winding is convenient, and the full groove rate of the winding is improved, the first buffer surface can reduce the bending of the connecting bridge when the stator punching sheet is reversely bent.
Description
Technical Field
The application relates to the technical field of motors generally, and particularly relates to a stator punching sheet, a stator core, a stator, a motor and an air conditioning device.
Background
Along with the national requirement on the energy efficiency level of household products such as air conditioners, refrigerators and the like, the living standard of people is improved, a compressor is used as a core component of a refrigerating device, a chain type stator punching sheet in the prior art comprises a plurality of punching sheet monomers which are connected in sequence, and two adjacent punching sheet monomers are connected through a yoke part connecting bridge.
However, the existing connecting bridge is of a straight-edge structure, the stator core is easy to deform and damage when becoming round, the chain type stator punching sheet is easy to break after being bent in a reciprocating mode, and the structural strength of the connecting bridge is weak.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
If technical problem for solving current chain stator core's connecting bridge structural strength, the main aim at of this application provides a stator punching, stator core, stator, motor and air conditioner device.
In order to achieve the purpose of the invention, the following technical scheme is adopted in the application:
a stator punching sheet comprises a plurality of punching sheet monomers which are sequentially connected, a connecting bridge is arranged between every two adjacent punching sheet monomers, and the radial outer side of each connecting bridge is connected with every two adjacent punching sheet monomers to form a groove;
the connecting bridge comprises a first side end face located on the radial outer side and a second side end face located on the radial inner side, the first side end face comprises a first buffering face protruding towards the radial outer side, and the second side end face comprises a second buffering face recessed towards the radial outer side.
Further, in some embodiments of the present disclosure, the first buffer surface and the second buffer surface are both arc-shaped structures.
Further, in some embodiments of the present disclosure, the first buffer surface and the second buffer surface are concentrically disposed.
Further, in some embodiments of the present disclosure, the height of the first buffer surface is the same as the depth of the second buffer surface.
Further, in some embodiments of the present disclosure, the first buffer surface is parallel to the second buffer surface.
Further, in some embodiments of the present disclosure, the first buffer surface is located at a central portion of the first side end surface, and the second buffer surface is located at a central portion of the second side end surface.
Further, in some embodiments of the present disclosure, a first semicircular groove and a second semicircular groove are formed between the radially inner side of the connecting bridge and each of the two adjacent punching single bodies.
A stator core comprises the stator punching sheet.
A stator includes the above stator core.
An electric motor mounts the stator.
An air conditioner is provided with the motor.
According to the technical scheme, the stator punching sheet, the stator core, the stator, the motor and the air conditioning device have the advantages and positive effects that:
the stator punching sheet is convenient to round, the structural strength of the connecting bridge is improved, and the winding full slot rate of the stator is improved.
Stator is towards piece including a plurality of punching monomers that connect gradually, and adjacent two be provided with the connection bridge towards between the piece monomer, connect the radial outside and adjacent two of bridge towards form the recess between the piece monomer, connect the bridge including the first side terminal surface that is located the radial outside and be located radial inboard second side terminal surface, first side terminal surface includes the bellied first buffering face in the radial outside of orientation, second side terminal surface includes the recessed second buffering face in the radial outside of orientation, first buffering face and second buffering face are used for connect the bridge buffering of bending, reduce the damage of connecting the bridge when rounding, in this scheme, the stator is towards the piece and can turn over, makes things convenient for the wire winding, improves the full groove rate of wire winding, and first buffering face can reduce the buckling of connecting the bridge when the stator is turned over.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a first stator lamination according to an exemplary embodiment.
FIG. 2 is an enlarged partial schematic view of FIG. 1 shown according to an exemplary embodiment.
Fig. 3 is an enlarged schematic view illustrating the trimming and slitting of fig. 1 according to an exemplary embodiment.
Fig. 4 is a schematic view illustrating a partial structure of a stator core using the stator lamination of fig. 1 according to an exemplary embodiment.
Fig. 5 is a schematic view illustrating a stator structure employing the stator core of fig. 4 according to an exemplary embodiment.
Fig. 6 is a schematic structural diagram of a second stator lamination according to an exemplary embodiment.
Fig. 7 is a schematic diagram illustrating a partial structure of a stator core using the stator lamination of fig. 6 according to an exemplary embodiment.
Fig. 8 is a schematic diagram of a stator structure using the stator core of fig. 7 according to an exemplary embodiment.
Fig. 9 is a schematic view of a third stator lamination structure according to an exemplary embodiment.
Fig. 10 is a schematic view illustrating a partial structure of a stator core using the stator lamination of fig. 9 according to an exemplary embodiment.
Fig. 11 is a schematic diagram illustrating a stator structure employing the stator core of fig. 10 according to an exemplary embodiment.
Fig. 12 is a schematic view of a fourth stator lamination structure according to an exemplary embodiment.
FIG. 13 is an enlarged partial schematic structural view of FIG. 12, shown in accordance with an exemplary embodiment.
Fig. 14 is a schematic view of the stator laminations of fig. 12 in a partially reverse folded state, according to an exemplary embodiment.
Fig. 15 is a schematic structural view of a stator core employing the stator laminations of fig. 12, according to an exemplary embodiment.
Fig. 16 is a schematic diagram illustrating a stator structure employing the stator core of fig. 15 according to an exemplary embodiment.
Fig. 17 is a schematic structural diagram of a fifth stator lamination according to an exemplary embodiment.
Fig. 18 is a schematic structural view of a stator core employing the stator laminations of fig. 17, according to an exemplary embodiment.
Fig. 19 is a schematic diagram illustrating a stator structure employing the stator core of fig. 18 according to an exemplary embodiment.
Fig. 20 is a schematic structural diagram of a sixth stator lamination according to an exemplary embodiment.
Fig. 21 is a schematic structural view of a stator core employing the stator laminations of fig. 20, according to an exemplary embodiment.
Fig. 22 is a schematic diagram illustrating a stator structure employing the stator core of fig. 21 according to an exemplary embodiment. Wherein the reference numerals are as follows:
10-a stator core; 20-a stator coil; 30-insulating slot paper;
100-stator punching;
110-punching single piece; 120-connecting bridge; 130-a groove; 140-a boss; 150-a recess;
111-trimming; 112-incision; 113-a fastening point; 114-a solder bath; 115-root flanging;
121-a first lateral end face; 122-a second side end face; 123-a first buffer surface; 124-a second buffer surface; 125-first semicircular groove; 126-second half slot.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The scheme provides a stator punching sheet, a stator core, a stator, a motor and an air conditioning device, wherein the stator punching sheet is used for forming the stator core 10, the stator is provided with the stator core 10, the stator punching sheet comprises a plurality of punching sheet single bodies 110 which are sequentially connected, a connecting bridge 120 is arranged between every two adjacent punching sheet single bodies 110, a groove 130 is formed between the radial outer side of the connecting bridge 120 and every two adjacent punching sheet single bodies 110, the connecting bridge 120 comprises a first side end surface 121 positioned on the radial outer side and a second side end surface 122 positioned on the radial inner side, the first side end surface 121 comprises a first buffering surface 123 which protrudes towards the radial outer side, the second side end surface 122 comprises a second buffering surface 124 which is recessed towards the radial outer side, the first buffering surface 123 and the second buffering surface 124 are both used for bending buffering of the connecting bridge 120, and damage of the connecting bridge 120 when the connecting bridge is rounded is reduced, in this scheme, the stator is towards the piece and can be turned over and roll over, and convenient wire winding improves the full groove rate of wire winding, and first buffer face 123 can reduce the bending of connecting bridge 120 when the stator is towards the piece and turns over.
Example 1:
as shown in fig. 1 to 5, the connecting bridge 120 and the punching sheet unit 110 of the stator punching sheet in fig. 1 to 5 have the same structure.
As shown in fig. 1, the stator punching sheet includes a plurality of punching sheet monomers 110 connected in sequence, two adjacent punching sheet monomers 110 are provided with a connecting bridge 120 therebetween, a positioning groove for positioning a tool is arranged on the outer peripheral side of each punching sheet monomer 110, and the positioning groove may be a groove structure. The punching sheet single body 110 is further provided with three buckling points 113, the buckling points 113 are rectangular holes, in this embodiment, the punching sheet single body 110 can be formed by processing an electrical steel strip plate with the thickness of 0.25mm, 0.3mm, 0.35mm or 0.5mm, and the punching sheet single body 110 is convenient to be laminated and molded through the buckling points 113.
Fig. 1 is a schematic view showing a result of a stator punching sheet, a plurality of punching sheet single bodies 110 can be arranged according to a processing design requirement, with reference to fig. 1-2, a connecting bridge 120 is arranged between two adjacent punching sheet single bodies 110, the connecting bridge 120 is used for connecting the two punching sheet single bodies 110, a groove 130 is formed between a radial outer side of the connecting bridge 120 and two adjacent punching sheet single bodies 110, the connecting bridge 120 includes a first side end surface 121 located at a radial outer side and a second side end surface 122 located at a radial inner side, the first side end surface 121 includes a first buffer surface 123 protruding toward the radial outer side, the second side end surface 122 includes a second buffer surface 124 recessed toward the radial inner side, the first buffer surface 123 is located at a central portion of the first side end surface 121, the second buffer surface 124 is located at a central portion of the second side end surface 122, both the first buffer surface 123 and the second buffer surface 124 are arc, the first buffer surface 123 is parallel to the second buffer surface 124, but the first buffer surface 123 is not concentric with the second buffer surface 124, so that the height of the first buffer surface 123 is the same as the depth of the second buffer surface 124. The first buffer surface 123 and the second buffer surface 124 are both used for bending and buffering the connecting bridge 120, so that the structural strength of the connecting bridge 120 is improved, a circle center corresponding to the second buffer surface 124 can be used as a rotating point for bending the connecting bridge 120, a first semicircular groove 125 and a second semicircular groove 126 are formed between the radial inner side of the connecting bridge 120 and two adjacent punching single bodies 110 respectively, when a stator punching sheet is rounded, the first semicircular groove 125 and the second semicircular groove 126 can be used for bending and buffering the connecting bridge 120 for transition, so that the stator punching sheet is conveniently assembled into a circle, and the two sides of the tooth root part are provided with folded edges which incline towards the radial inner side respectively, as shown in fig. 1 and 5, the magnetic density distribution of a magnetic field at the tooth root part is improved by the tooth root folded edge 115.
When chain structure's stator punching is buckled into the circle, the centre of a circle of second buffer face 124 is connected the rotatory point that the bridge 120 both ends are bending when becoming the circle, makes things convenient for the stator punching to become the circle, has guaranteed that the first side end face 121 of connecting the bridge 120 is less than the stator external diameter after becoming the circle, improves to become circle precision and structural strength. The first buffer surface 123 is used as an expansion area for stretching and pressing when the connecting bridge 120 is bent, so that the punching sheet monomer 110 is positioned more accurately when being rounded, the precision is high, the stator structure is reliable and stable, the deformation damage of the punching sheet when being rounded is reduced, and the punching sheet can be bent in a round way for multiple times without being broken.
Referring to fig. 3, a distance between an extension line of a yoke portion of the punching sheet unit 110 and a tooth edge thereof in fig. 3 is defined as L, and as understood by those skilled in the art, the value of L is greater than zero and less than 0.5 mm.
The tooth end face of each punching sheet single body 110 is provided with a cutting edge 111 and two notches 112, each punching sheet single body 110 is provided with two cutting edges 111 and two notches 112, the cutting edges 111 are located on two sides of the tooth end face in the circumferential direction, and the two notches 112 are located between the two cutting edges 111.
The cutting edges 111 and the notches 112 can reduce radial force waves of the motor, improve magnetic density distribution of tooth parts of a magnetic field, increase frequency of harmonic waves of the teeth, reduce amplitude, and accordingly reduce noise on the whole. Under the understanding of the skilled person, 1-3 notches 112 can be optionally formed, so that the problem of operation noise of the motor is further improved, and the quality of the product is improved.
In this embodiment, when the stator punching sheet is rounded, the punching sheet monomer located at the head end is matched with the punching sheet monomer located at the tail end through a concave-convex structure, the punching sheet monomer at the head end is provided with the protruding portion 140, the punching sheet monomer located at the tail end is provided with the concave portion 150 used for being matched with the protruding portion 140, the punching sheet monomer located at the head end is provided with the welding groove 114 in the radial outer side, the punching sheet monomer located at the tail end is also provided with the welding groove 114 in the radial outer side, the stator punching sheet is welded after being rounded, and the welding groove 114 is used for.
Fig. 4 is a schematic view of a partial structure of the stator core 10 formed by stacking the stator punching sheets, and fig. 5 is a schematic view of a stator structure of the stator core 10 in fig. 4, where the stator includes the stator core 10, a stator coil 20, and an insulating slot paper 30.
Example 2:
referring to fig. 6-8, fig. 6 is a schematic structural view of a second stator punching sheet in the present application, in this embodiment, a tooth end portion of the punching sheet single body 110 has an arc-shaped structure.
As shown in fig. 6, the stator punching sheet includes a plurality of punching sheet monomers 110 connected in sequence, two adjacent punching sheet monomers 110 are provided with a connecting bridge 120 therebetween, a positioning groove for positioning a tool is arranged on the outer peripheral side of each punching sheet monomer 110, and the positioning groove may be a groove structure. The punching sheet single body 110 is further provided with three buckling points 113, the buckling points 113 are rectangular holes, in this embodiment, the punching sheet single body 110 can be formed by processing an electrical steel strip plate with the thickness of 0.25mm, 0.3mm, 0.35mm or 0.5mm, and the punching sheet single body 110 is convenient to be laminated and molded through the buckling points 113.
Fig. 6 is a schematic diagram showing a result of a stator punching sheet, a plurality of punching sheet single bodies 110 may be arranged according to a processing design requirement, a connection bridge 120 is arranged between two adjacent punching sheet single bodies 110, the connection bridge 120 is used for connecting the two punching sheet single bodies 110, a groove 130 is formed between a radial outer side of the connection bridge 120 and two adjacent punching sheet single bodies 110, the connection bridge 120 includes a first lateral end surface 121 located at a radial outer side and a second lateral end surface 122 located at a radial inner side, the first lateral end surface 121 includes a first buffer surface 123 protruding toward the radial outer side, the second lateral end surface 122 includes a second buffer surface 124 recessed toward the radial inner side, the first buffer surface 123 is located at a central position of the first lateral end surface 121, the second buffer surface 124 is located at a central position of the second lateral end surface 122, both the first buffer surface 123 and the second buffer surface 124 are arc-shaped, the first buffer surface 123 is parallel to the second buffer surface 124, however, the first buffer surface 123 is not concentric with the second buffer surface 124, and thus, the height of the first buffer surface 123 is the same as the depth of the recess of the second buffer surface 124. First buffer face 123 with second buffer face 124 all is used for connecting bridge 120 the buffering of bending, improves the structural strength who connects bridge 120, and the centre of a circle that second buffer face 124 corresponds can be regarded as the stator and is buckled when the stator punching, connects the rotation point that bridge 120 buckles, connects the radial inboard of bridge 120 and forms first semicircle groove 125 and second semicircle groove 126 between two adjacent punching monomer 110 respectively, and when the stator punching becomes the circle, first semicircle groove 125 and second semicircle groove 126 can buckle the buffering transition to connecting bridge 120, be convenient for the stator punching frock to become the circle, and tooth root both sides are provided with the hem towards radial inboard slope respectively, as in figure 6, figure 8, tooth root hem 115 can improve the magnetic density distribution of magnetic field at the tooth root.
When chain structure's stator punching is buckled into the circle, the centre of a circle of second buffer face 124 is connected the rotatory point that the bridge 120 both ends are bending when becoming the circle, makes things convenient for the stator punching to become the circle, has guaranteed that the first side end face 121 of connecting the bridge 120 is less than the stator external diameter after becoming the circle, improves to become circle precision and structural strength. The first buffer surface 123 is used as an expansion area for stretching and pressing when the connecting bridge 120 is bent, so that the punching sheet monomer 110 is positioned more accurately when being rounded, the precision is high, the stator structure is reliable and stable, the deformation damage of the punching sheet when being rounded is reduced, and the punching sheet can be bent in a round way for multiple times without being broken.
In this embodiment, when the stator punching sheet is rounded, the punching sheet monomer located at the head end is matched with the punching sheet monomer located at the tail end through a concave-convex structure, the punching sheet monomer at the head end is provided with the protruding portion 140, the punching sheet monomer located at the tail end is provided with the concave portion 150 used for being matched with the protruding portion 140, the punching sheet monomer located at the head end is provided with the welding groove 114 in the radial outer side, the punching sheet monomer located at the tail end is also provided with the welding groove 114 in the radial outer side, the stator punching sheet is welded after being rounded, and the welding groove 114 is used for.
Fig. 7 is a schematic view of a partial structure of the stator core 10 formed by overlapping the stator punching sheets in fig. 6, and fig. 8 is a schematic view of a stator structure of the stator core 10 in fig. 7, where the stator includes the stator core 10, a stator coil 20, and an insulating slot paper 30.
Example 3:
with reference to fig. 9-11, fig. 9 is a schematic view of a third stator punching structure in the present application, in this embodiment, a tooth end portion of the punching single body 110 is in an arc-shaped structure, and a tooth root portion of the punching single body 110 is in a straight-edge structure, so that the punching of a die and the wire arrangement of a winding device are facilitated, and the utilization rate of an iron core material is improved.
As shown in fig. 9, the stator punching sheet includes a plurality of punching sheet monomers 110 connected in sequence, two adjacent punching sheet monomers 110 are provided with a connecting bridge 120 therebetween, a positioning groove for positioning a tool is arranged on the outer peripheral side of each punching sheet monomer 110, and the positioning groove may be a groove structure. The punching sheet single body 110 is further provided with three buckling points 113, the buckling points 113 are rectangular holes, in this embodiment, the punching sheet single body 110 can be formed by processing an electrical steel strip plate with the thickness of 0.25mm, 0.3mm, 0.35mm or 0.5mm, and the punching sheet single body 110 is convenient to be laminated and molded through the buckling points 113.
Fig. 9 is a schematic view showing a result of a stator punching sheet, a plurality of punching sheet monomers 110 may be arranged according to a processing design requirement, a connection bridge 120 is arranged between two adjacent punching sheet monomers 110, the connection bridge 120 is used for connecting the two punching sheet monomers 110, a groove 130 is formed between a radial outer side of the connection bridge 120 and two adjacent punching sheet monomers 110, the connection bridge 120 includes a first lateral end surface 121 located at a radial outer side and a second lateral end surface 122 located at a radial inner side, the first lateral end surface 121 includes a first buffer surface 123 protruding toward the radial outer side, the second lateral end surface 122 includes a second buffer surface 124 recessed toward the radial inner side, the first buffer surface 123 is located at a central position of the first lateral end surface 121, the second buffer surface 124 is located at a central position of the second lateral end surface 122, the first buffer surface 123 and the second buffer surface 124 are both arc-shaped, the first buffer surface 123 and the second buffer surface 124 are parallel but different in center, therefore, the height of the first buffer surface 123 is the same as the depth of the recess of the second buffer surface 124. First buffer face 123 with second buffer face 124 all is used for connect bridge 120 the buffering of bending, improve the structural strength who connects bridge 120, when the centre of a circle that second buffer face 124 corresponds can be buckled as the stator punching, connect the turning point that bridge 120 buckles, connect bridge 120 radial inboard respectively with adjacent two towards form first semicircle groove 125 and second semicircle groove 126 between the piece monomer 110, when the stator punching becomes the circle, first semicircle groove 125 and second semicircle groove 126 can buckle the buffering transition to connecting bridge 120, be convenient for the stator punching frock to become the circle. In fig. 9-11, the tooth root of the punching sheet single body 110 is a straight-edge structure, which is convenient for die stamping and winding of winding equipment, and improves the utilization rate of the iron core material.
When chain structure's stator punching is buckled into the circle, the centre of a circle of second buffer face 124 is connected the rotatory point that the bridge 120 both ends are bending when becoming the circle, makes things convenient for the stator punching to become the circle, has guaranteed that the first side end face 121 of connecting the bridge 120 is less than the stator external diameter after becoming the circle, improves to become circle precision and structural strength. The first buffer surface 123 is used as an expansion area for stretching and pressing when the first side end surface 121 of the connecting bridge 120 is bent, so that the punching sheet monomer 110 is positioned more accurately when being rounded, the precision is high, the stator structure is reliable and stable, deformation damage of the stator punching sheet when being rounded is reduced, and the stator punching sheet can be bent in a round way for many times without being broken.
In this embodiment, when the stator punching sheet is rounded, the punching sheet monomer located at the head end is matched with the punching sheet monomer located at the tail end through a concave-convex structure, the punching sheet monomer at the head end is provided with the protruding portion 140, the punching sheet monomer located at the tail end is provided with the concave portion 150 used for being matched with the protruding portion 140, the punching sheet monomer located at the head end is provided with the welding groove 114 in the radial outer side, the punching sheet monomer located at the tail end is also provided with the welding groove 114 in the radial outer side, the stator punching sheet is welded after being rounded, and the welding groove 114 is used for.
Fig. 7 is a schematic view of a partial structure of the stator core 10 formed by overlapping the stator punching sheets in fig. 6, and fig. 8 is a schematic view of a stator structure of the stator core 10 in fig. 7, where the stator includes the stator core 10, a stator coil 20, and an insulating slot paper 30.
Example 4:
with reference to fig. 17-19, fig. 17 is a schematic structural diagram of a fifth stator lamination in the present application, in this embodiment,
as shown in fig. 17, the stator punching sheet includes a plurality of punching sheet monomers 110 connected in sequence, two adjacent punching sheet monomers 110 are provided with a connecting bridge 120 therebetween, a positioning groove for positioning a tool is arranged on the outer peripheral side of each punching sheet monomer 110, and the positioning groove may be a groove structure. The punching sheet single body 110 is further provided with three buckling points 113, the buckling points 113 are rectangular holes, in this embodiment, the punching sheet single body 110 can be formed by processing an electrical steel strip plate with the thickness of 0.25mm, 0.3mm, 0.35mm or 0.5mm, and the buckling points 113 facilitate the lamination molding of the punching sheet single body 110.
Fig. 12 to 13 are schematic diagrams showing the results of stator punching, the number of punching single bodies 110 may be multiple according to the processing design requirement, a connecting bridge 120 is disposed between two adjacent punching single bodies 110, the connecting bridge 120 is used for connecting between two punching single bodies 110, a groove 130 is formed between the radial outer side of the connecting bridge 120 and two adjacent punching single bodies 110, the connecting bridge 120 includes a first side end surface 121 located at the radial outer side and a second side end surface 122 located at the radial inner side, first lateral surface 121 includes the bellied first buffering face 123 of radial outside orientation, second lateral surface 122 includes the radial recessed second buffering face 124 of orientation, and first buffering face 123 is located the central point of first lateral surface 121, and second buffering face 124 is located the central point of second lateral surface 122, and first buffering face 123 and second buffering face 124 are the arc, and first buffering face 123 corresponds same centre of a circle with second buffering face 124.
When the stator punching sheet of the chain structure is bent into a circle, the circle center of the second buffer surface 124 serves as a rotating point at which the two ends of the connecting bridge 120 are bent during rounding, so that the stator punching sheet is convenient to round, and the rounding precision and the structural strength are improved. The first buffer surface 123 is used as an expansion area for stretching and pressing when the first side end surface 121 of the connecting bridge 120 is bent, so that the punching sheet monomer 110 is positioned more accurately when being rounded, the precision is high, the stator structure is reliable and stable, deformation damage of the stator punching sheet when being rounded is reduced, and the stator punching sheet can be bent in a round way for many times without being broken.
With reference to fig. 12 and 14, the tooth end face of each punching single body 110 is provided with a cut edge 111 and a cut 112, each punching single body 110 is provided with two cut edges 111 and two cut 112, the cut edges 111 are located on two sides of the tooth end face in the circumferential direction, the two cut 112 are located between the two cut edges 111, two sides of the tooth root are provided with folded edges inclined towards the radial inner side, and the tooth root folded edge 115 improves the magnetic density distribution of a magnetic field at the tooth root.
The cutting edges 111 and the notches 112 can reduce radial force waves of the motor, improve magnetic density distribution of tooth parts of a magnetic field, increase frequency of harmonic waves of the teeth, reduce amplitude, and accordingly reduce noise on the whole. Under the understanding of the skilled person, 1-3 notches 112 can be optionally formed, so that the problem of operation noise of the motor is further improved, and the quality of the product is improved.
In this embodiment, when the stator punching sheet is rounded, the punching sheet monomer located at the head end is matched with the punching sheet monomer located at the tail end through a concave-convex structure, the punching sheet monomer at the head end is provided with the protruding portion 140, the punching sheet monomer located at the tail end is provided with the concave portion 150 used for being matched with the protruding portion 140, the punching sheet monomer located at the head end is provided with the welding groove 114 in the radial outer side, the punching sheet monomer located at the tail end is also provided with the welding groove 114 in the radial outer side, the stator punching sheet is welded after being rounded, and the welding groove 114 is used for.
As shown in fig. 14, the stator punching sheet can be folded back, so that the winding of the stator core 10 is facilitated, and the full rate of the winding slots is improved. Fig. 15 is a schematic view of a partial structure of a stator core 10 formed by overlapping stator punching sheets in fig. 12, and fig. 16 is a schematic view of a stator structure of the stator core 10 in fig. 15, where the stator includes the stator core 10, a stator coil 20, and an insulating slot paper 30.
Example 5:
with reference to fig. 17-19, fig. 17 is a schematic view of a fifth stator punching structure in the present application, and a tooth root of the punching monomer 110 is a straight-edge structure, so that the punching of a die and the winding of a winding device are facilitated, and the utilization rate of an iron core material is improved.
As shown in fig. 17, the stator punching sheet includes a plurality of punching sheet monomers 110 connected in sequence, two adjacent punching sheet monomers 110 are provided with a connecting bridge 120 therebetween, a positioning groove for positioning a tool is arranged on the outer peripheral side of each punching sheet monomer 110, and the positioning groove may be a groove structure. The punching sheet single body 110 is further provided with three buckling points 113, the buckling points 113 are rectangular holes, in this embodiment, the punching sheet single body 110 can be formed by processing an electrical steel strip plate with the thickness of 0.25mm, 0.3mm, 0.35mm or 0.5mm, and the buckling points 113 facilitate the lamination molding of the punching sheet single body 110.
Fig. 17 is a schematic diagram of a result of a stator punching sheet, the number of punching sheet single bodies 110 may be multiple according to a processing design requirement, a connecting bridge 120 is disposed between two adjacent punching sheet single bodies 110, the connecting bridge 120 is used for connecting between two punching sheet single bodies 110, a groove 130 is formed between a radial outer side of the connecting bridge 120 and two adjacent punching sheet single bodies 110, the connecting bridge 120 includes a first side end surface 121 located at the radial outer side and a second side end surface 122 located at the radial inner side, first lateral surface 121 includes the bellied first buffering face 123 of radial outside orientation, second lateral surface 122 includes the radial recessed second buffering face 124 of orientation, and first buffering face 123 is located the central point of first lateral surface 121, and second buffering face 124 is located the central point of second lateral surface 122, and first buffering face 123 and second buffering face 124 are the arc, and the arc contour line of first buffering face 123 is the same with the centre of a circle that the arc contour line of second buffering face 124 corresponds.
When the stator punching sheet of the chain structure is bent into a circle, the circle center of the second buffer surface 124 serves as a rotating point at which the two ends of the connecting bridge 120 are bent during rounding, so that the stator punching sheet is convenient to round, and the rounding precision and the structural strength are improved. The first buffer surface 123 is used as an expansion area for stretching and pressing when the first side end surface 121 of the connecting bridge 120 is bent, so that the punching sheet monomer 110 is positioned more accurately when being rounded, the precision is high, the stator structure is reliable and stable, deformation damage of the stator punching sheet when being rounded is reduced, and the stator punching sheet can be bent in a round way for many times without being broken.
With reference to fig. 17 and 19, each punching sheet single body 110 is provided with a cutting edge 111 and a notch 112 on a tooth end face, each punching sheet single body 110 is provided with two cutting edges 111 and two notches 112, the cutting edges 111 are located on two sides of the tooth end face in the circumferential direction, and the two notches 112 are located between the two cutting edges 111. The cutting edges 111 and the notches 112 can reduce radial force waves of the motor, improve magnetic density distribution of tooth parts of a magnetic field, increase frequency of harmonic waves of the teeth, reduce amplitude, and accordingly reduce noise on the whole. Under the understanding of the skilled person, 1-3 notches 112 can be optionally formed, so that the problem of operation noise of the motor is further improved, and the quality of the product is improved.
In this embodiment, when the stator punching sheet is rounded, the punching sheet monomer located at the head end is matched with the punching sheet monomer located at the tail end through a concave-convex structure, the punching sheet monomer at the head end is provided with the protruding portion 140, the punching sheet monomer located at the tail end is provided with the concave portion 150 used for being matched with the protruding portion 140, the punching sheet monomer located at the head end is provided with the welding groove 114 in the radial outer side, the punching sheet monomer located at the tail end is also provided with the welding groove 114 in the radial outer side, the stator punching sheet is welded after being rounded, and the welding groove 114 is used for.
The present embodiment further provides a stator core 10, a stator, a motor and an air conditioning apparatus, for example, fig. 18 is a schematic view of a partial structure of the stator core 10 formed by overlapping the stator laminations in fig. 17,
fig. 19 is a schematic view of a stator structure using the stator core 10 of fig. 18, and the stator includes the stator core 10, a stator coil 20, and an insulating slot paper 30.
Example 6:
with reference to fig. 20-22, fig. 20 is a schematic structural view of a fifth stator punching sheet in the present application, a tooth end portion of the punching sheet single body 110 is in an arc structure, and a tooth root portion of the punching sheet single body 110 is in a straight-edge structure, so that die stamping and winding displacement of a winding device are facilitated, and utilization rate of an iron core material is improved.
As shown in fig. 20, the stator punching sheet includes a plurality of punching sheet monomers 110 connected in sequence, two adjacent punching sheet monomers 110 are provided with a connecting bridge 120 therebetween, a positioning groove for positioning a tool is arranged on the outer peripheral side of each punching sheet monomer 110, and the positioning groove may be a groove structure. The punching sheet single body 110 is further provided with three buckling points 113, the buckling points 113 are rectangular holes, in this embodiment, the punching sheet single body 110 can be formed by processing an electrical steel strip plate with the thickness of 0.25mm, 0.3mm, 0.35mm or 0.5mm, and the buckling points 113 facilitate the lamination molding of the punching sheet single body 110.
Fig. 20 is a schematic diagram of a result of stator punching, the number of punching single bodies 110 may be multiple according to a processing design requirement, a connecting bridge 120 is disposed between two adjacent punching single bodies 110, the connecting bridge 120 is used for connecting between two punching single bodies 110, a groove 130 is formed between a radial outer side of the connecting bridge 120 and two adjacent punching single bodies 110, the connecting bridge 120 includes a first side end surface 121 located at the radial outer side and a second side end surface 122 located at the radial inner side, first lateral surface 121 includes the bellied first buffering face 123 of radial outside orientation, second lateral surface 122 includes the radial recessed second buffering face 124 of orientation, and first buffering face 123 is located the central point of first lateral surface 121, and second buffering face 124 is located the central point of second lateral surface 122, and first buffering face 123 and second buffering face 124 are the arc, and the arc contour line of first buffering face 123 is the same with the centre of a circle that the arc contour line of second buffering face 124 corresponds.
When the stator punching sheet of the chain structure is bent into a circle, the circle center of the second buffer surface 124 serves as a rotating point at which the two ends of the connecting bridge 120 are bent during rounding, so that the stator punching sheet is convenient to round, and the rounding precision and the structural strength are improved. The first buffer surface 123 is used as an expansion area for stretching and pressing when the first side end surface 121 of the connecting bridge 120 is bent, so that the punching sheet monomer 110 is positioned more accurately when being rounded, the precision is high, the stator structure is reliable and stable, deformation damage of the stator punching sheet when being rounded is reduced, and the stator punching sheet can be bent in a round way for many times without being broken.
In this embodiment, when the stator punching sheet is rounded, the punching sheet monomer located at the head end is matched with the punching sheet monomer located at the tail end through a concave-convex structure, the punching sheet monomer at the head end is provided with the protruding portion 140, the punching sheet monomer located at the tail end is provided with the concave portion 150 used for being matched with the protruding portion 140, the punching sheet monomer located at the head end is provided with the welding groove 114 in the radial outer side, the punching sheet monomer located at the tail end is also provided with the welding groove 114 in the radial outer side, the stator punching sheet is welded after being rounded, and the welding groove 114 is used for.
Fig. 21 is a schematic view of a partial structure of a stator core 10 formed by overlapping stator punching sheets in fig. 20, and fig. 22 is a schematic view of a stator structure of the stator core 10 in fig. 21, where the stator includes the stator core 10, a stator coil 20, and an insulating slot paper 30.
In summary, the present disclosure provides a stator punching sheet, a stator core, a stator, a motor and an air conditioning apparatus, where the stator punching sheet includes a plurality of punching sheet monomers 110, a connection bridge 120 is disposed between two adjacent punching sheet monomers 110, the stator punching sheet has six structural forms, and six motors can be assembled, the first buffer surface 123 and the second buffer surface 124 are both arc-shaped, when the stator punching sheet of the chain structure is bent into a circle, a circle center of the second buffer surface 124 serves as a rotation point at which two ends of the connection bridge 120 are bent when the stator punching sheet is rounded, so as to facilitate rounding of the stator punching sheet, and improve rounding precision and structural strength, and the first buffer surface 123 serves as an extension and compression expansion region when the radial outer side of the connection bridge 120 is bent, so that the punching sheet monomers 110 are positioned more accurately when the stator punching sheet is rounded, the precision is high, the stator structure is reliable and stable, deformation and damage of the stator punching sheet when the stator punching.
The connecting bridge 120 includes two structural forms:
the first method comprises the following steps: the first cushioning surface 123 is parallel to, but not concentric with, the second cushioning surface 124;
and the second method comprises the following steps: the first buffer surface 123 is concentrically disposed with the second buffer surface 124.
The tooth end face of the punching sheet single body 110 has two structural forms:
the first method comprises the following steps: the end face of the teeth of the punching sheet single body 110 is provided with a notch 112 and a trimming edge 111;
and the second method comprises the following steps: 110 tooth end faces of the punching sheet monomers are of arc-shaped structures.
The tooth root comprises two structural forms:
the first method comprises the following steps: the tooth root part of the punching sheet monomer 110 is of a straight-edge structure;
in the second step: the root of the tooth of the punching single body 110 is provided with a root flange 115.
Six stator laminations are formed according to structural changes of the connecting bridge 120, the tooth end surfaces or the tooth roots.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. The stator punching sheet is characterized by comprising a plurality of punching sheet single bodies (110) which are sequentially connected, a connecting bridge (120) is arranged between every two adjacent punching sheet single bodies (110), and the radial outer side of each connecting bridge (120) is connected with every two adjacent punching sheet single bodies (110) to form a groove (130);
the connecting bridge (120) comprises a first side end face (121) located on the radial outer side and a second side end face (122) located on the radial inner side, the first side end face (121) comprises a first buffering face (123) protruding towards the radial outer side, and the second side end face (122) comprises a second buffering face (124) recessed towards the radial outer side.
2. The stator punching sheet according to claim 1, wherein the first buffer surface (123) and the second buffer surface (124) are both arc-shaped structures.
3. The stator lamination as recited in claim 2, wherein the first buffer surface (123) is concentrically arranged with the second buffer surface (124).
4. The stator lamination as recited in claim 1, wherein the first buffer surface (123) has a convex height equal to a concave depth of the second buffer surface (124).
5. The stator lamination as recited in claim 1, wherein the first buffer surface (123) is parallel to the second buffer surface (124).
6. The stator punching sheet according to claim 1, wherein the first buffer surface (123) is located at a central portion of the first side end surface (121), and the second buffer surface (124) is located at a central portion of the second side end surface (122).
7. The stator punching sheet according to claim 1, wherein a first semicircular groove (125) and a second semicircular groove (126) are respectively formed between the radially inner side of the connecting bridge (120) and two adjacent punching sheet single bodies (110).
8. A stator core (10) characterized by comprising a stator lamination according to any one of claims 1 to 7.
9. A stator, characterized by comprising the stator core (10) of claim 8.
10. An electric machine, characterized in that a stator according to claim 9 is installed.
11. An air conditioning apparatus, characterized in that the motor of claim 10 is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158164.9A CN112260423A (en) | 2020-10-26 | 2020-10-26 | Stator punching sheet, stator core, stator, motor and air conditioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158164.9A CN112260423A (en) | 2020-10-26 | 2020-10-26 | Stator punching sheet, stator core, stator, motor and air conditioning device |
Publications (1)
| Publication Number | Publication Date |
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| CN112260423A true CN112260423A (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011158164.9A Withdrawn CN112260423A (en) | 2020-10-26 | 2020-10-26 | Stator punching sheet, stator core, stator, motor and air conditioning device |
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| CN (1) | CN112260423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113746222A (en) * | 2021-08-18 | 2021-12-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Stator core and stator |
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Application publication date: 20210122 |