CN113131646A - Magnetic steel positioning structure, motor and mounting tool of magnetic steel positioning structure - Google Patents
Magnetic steel positioning structure, motor and mounting tool of magnetic steel positioning structure Download PDFInfo
- Publication number
- CN113131646A CN113131646A CN202010033690.6A CN202010033690A CN113131646A CN 113131646 A CN113131646 A CN 113131646A CN 202010033690 A CN202010033690 A CN 202010033690A CN 113131646 A CN113131646 A CN 113131646A
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- magnetic steel
- positioning
- pressing plate
- rotor back
- back iron
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
- H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a magnetic steel positioning structure which comprises a rotor back iron, magnetic steel pressing plates and a peripheral positioning ring, wherein the magnetic steel pressing plates are uniformly distributed and fixed on the surface of the rotor back iron along the circumferential direction, the rotor back iron is provided with pressing plate fixing holes which are in one-to-one correspondence with the magnetic steel pressing plates, a magnetic steel mounting groove for inserting magnetic steel along the radial direction of the rotor back iron from outside to inside is formed between every two adjacent magnetic steel pressing plates, an axial limiting structure for limiting the axial movement of the magnetic steel relative to the rotor back iron is arranged on the side surface of each magnetic steel pressing plate facing the magnetic steel mounting groove, and the peripheral positioning ring is positioned on the periphery of the magnetic steel pressing plates. This scheme can realize magnet steel at rotor back of the body iron axial, circumference and radial location to cancel the boss structure on rotor back of the body iron surface, only need the clamp plate fixed orifices can realize the fixed of magnet steel clamp plate, greatly reduced the processing degree of difficulty and the cost of rotor back of the body iron. This scheme still discloses a motor and above-mentioned magnet steel location structure's installation frock including above-mentioned magnet steel location structure.
Description
Technical Field
The invention relates to the technical field of motor structure design, in particular to a magnetic steel positioning structure, a motor and a mounting tool of the magnetic steel positioning structure.
Background
For the disk type motor rotor disks of the middle stator and the two-side rotor or the disk type motor rotor disk of the single stator and the single rotor, in the rotor disk structure, the magnetic steel is required to be fixedly installed on the back iron. Because the position of the magnetic steel on the back iron needs to be positioned, a common method in the prior art is to process positioning structures such as positioning bosses on the surface of the back iron, however, the positioning boss structure increases the processing difficulty and the processing cost of the back iron.
Therefore, how to reduce the processing difficulty and cost of the back iron while realizing the positioning of the magnetic steel is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a magnetic steel positioning structure, which does not need to process a boss on the surface of a back iron, and can perform axial positioning and circumferential positioning on a magnetic steel. The invention also aims to provide a motor comprising the magnetic steel positioning structure and an installation tool of the magnetic steel positioning structure.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a magnet steel location structure, includes rotor back iron, magnet steel clamp plate and periphery holding ring, and is a plurality of the magnet steel clamp plate is fixed in along the circumference equipartition the surface of rotor back iron, the rotor back iron be equipped with the clamp plate fixed orifices of a plurality of magnet steel clamp plate one-to-ones, adjacent form between the magnet steel clamp plate and supply the magnet steel to follow the radial outside-in male magnet steel mounting groove of rotor back iron, the orientation of magnet steel clamp plate the side of magnet steel mounting groove is equipped with and is used for the restriction the magnet steel is relative the rotor back iron is along axial displacement's axial limit structure, the periphery holding ring is located the magnet steel clamp plate with the magnet steel is followed the radial periphery of rotor back.
The use method of the magnetic steel positioning structure provided by the scheme of the invention comprises the following steps: the magnetic steel pressing plate is connected and fixed on the surface of the rotor back iron through the connecting piece and the pressing plate fixing hole, then the magnetic steel is inserted and fixed into the magnetic steel mounting groove between the adjacent magnetic steel pressing plates from the outer side, and finally the peripheral positioning ring is fixed on the outer rings of the magnetic steel pressing plate and the magnetic steel. The adjacent magnetic steel pressing plates have a magnetic steel clamping effect and realize the circumferential positioning of the magnetic steel on the rotor back iron, the axial limiting structure on the side surfaces of the magnetic steel pressing plates realizes the axial positioning of the magnetic steel on the rotor back iron, and the peripheral positioning rings radially constrain the magnetic steel on the rotor back iron so as to resist the centrifugal force of the rotor rotating at a high speed.
Preferably, the axial limiting structure is an axial limiting surface formed on the side surface of the magnetic steel pressing plate, the axial limiting surface of the magnetic steel pressing plate and the surface of the rotor back iron form a magnetic steel mounting groove with a wedge-shaped cross section, and the cross section width of the magnetic steel mounting groove is gradually reduced from the groove bottom to the groove opening.
Preferably, the width of the magnetic steel mounting groove is gradually reduced from outside to inside along the radial direction of the rotor back iron.
Preferably, the rotor back iron is provided with annular positioning steps, the annular positioning steps are located at the positions of the inner rings of the magnetic steel pressing plates in the radial direction of the rotor back iron, and the end parts of the magnetic steel pressing plates abut against the peripheries of the annular positioning steps.
Preferably, the end face of the magnetic steel pressing plate, which is used for abutting against one end of the annular positioning step, is an arc surface attached to the periphery of the annular positioning step.
Preferably, the pressing plate fixing hole is a threaded hole, and the magnetic steel pressing plate is fixed in the pressing plate fixing hole through a pressing plate screw.
Preferably, the peripheral positioning ring is a carbon fiber ring.
The invention has the following beneficial effects:
1) the magnetic steel positioning structure provided by the scheme of the invention can realize the axial, circumferential and radial positioning of the magnetic steel on the back iron of the rotor, and ensure the stable structure of the rotor;
2) according to the scheme, a boss structure on the surface of the existing rotor back iron is omitted, the magnetic steel pressing plate can be fixed only by machining the pressing plate fixing hole, and the machining difficulty and the manufacturing cost of the rotor back iron are greatly reduced.
The invention also provides a motor comprising the magnetic steel positioning structure. The derivation process of the beneficial effect of the motor is substantially similar to the derivation process of the beneficial effect brought by the magnetic steel positioning structure, and therefore the description is omitted.
The invention also provides a mounting tool of the magnetic steel positioning structure, which is used for mounting and positioning the magnetic steel positioning structure and comprises the following components:
the pressing plate positioning ring is used for fixing the relative position between every two adjacent magnetic steel pressing plates, the pressing plate positioning ring comprises first pressing plate positioning structures which correspond to the magnetic steel pressing plates one by one, each magnetic steel pressing plate is provided with a second pressing plate positioning structure in limit fit with the first pressing plate positioning structures, and the second pressing plate positioning structures and the pressing plate fixing holes have preset distances in the radial direction of the rotor back iron;
and the tool positioning structure is used for positioning the relative position of the pressing plate positioning ring and the rotor back iron.
Preferably, a side end face of the pressing plate positioning ring is provided with a positioning boss corresponding to each magnetic steel pressing plate one to one, the positioning boss is located the magnetic steel pressing plate is in the outer end position of the rotor back iron in the radial direction, the first pressing plate positioning structure is arranged on a positioning flange on the positioning boss, the second pressing plate positioning structure is arranged on a positioning groove in the outer end of the rotor back iron in the radial direction, the positioning flange is matched with and limited by the positioning groove in a clamping manner, and the magnetic steel pressing plate is in relative rotation of the rotor back iron in the circumferential direction.
Preferably, the periphery of rotor back iron is equipped with annular frock location step, the clamp plate holding ring is fixed in on the step face of frock location step, frock location structure include the locating pin with set up in first frock locating hole on the frock location step and set up in second frock locating hole on the clamp plate holding ring.
The installation tool of the magnetic steel positioning structure provided by the scheme of the invention can quickly and accurately fix each magnetic steel pressing plate on the rotor back iron, thereby ensuring that the magnetic steel is smoothly inserted into the magnetic steel installation groove, simplifying the installation and positioning process of the magnetic steel and ensuring the positioning precision.
Drawings
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an assembled state of a rotor disc and a mounting tool in an embodiment of the present invention;
FIG. 2 is an exploded view of a rotor disk in an embodiment of the invention;
FIG. 3 is a schematic view of the positioning and assembly of the installation tool in the embodiment of the present invention;
FIG. 4 is a schematic view of an assembly process of magnetic steel according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an installation tool of a magnetic steel positioning structure in the embodiment of the present invention;
FIG. 6 is a schematic view of a positioning boss and a positioning flange of the platen positioning ring in accordance with an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a magnetic steel pressing plate in the embodiment of the present invention.
In fig. 1 to 7:
1-rotor back iron, 11-first tool positioning hole, 12-pressing plate fixing hole, 2-magnetic steel, 3-magnetic steel pressing plate, 31-positioning groove, 32-screw hole, 33-arc surface, 34-axial limiting surface, 4-pressing plate positioning ring, 41-second tool positioning hole, 42-positioning boss, 43-positioning flange, 5-pressing plate screw, 6-peripheral positioning ring and 7-annular positioning step.
Detailed Description
The scheme of the invention provides a magnetic steel positioning structure, which does not need to process positioning structures such as bosses and the like on the surface of a rotor back iron, simplifies the structure and processing difficulty of the rotor back iron, and can carry out axial positioning, circumferential positioning and radial positioning on magnetic steel. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Referring to fig. 1 to 7, fig. 1 to 3 are a schematic structural diagram of a combined state of a rotor disc and an installation tool, an exploded structural diagram of the rotor disc, and a positioning and assembling diagram of the installation tool in an embodiment of the present invention, respectively; FIG. 4 is a schematic view of an assembly process of magnetic steel according to an embodiment of the present invention; FIG. 5 is a schematic view of a mounting fixture structure of a magnetic steel positioning structure in an embodiment of the present invention; FIG. 6 is a schematic view of a positioning boss and a positioning flange of the platen positioning ring in accordance with an embodiment of the present invention; fig. 7 is a schematic structural diagram of a magnetic steel pressing plate in the embodiment of the present invention.
In order to reduce the processing difficulty and cost of the back iron while realizing the positioning of the magnetic steel, the invention provides a magnetic steel positioning structure, which comprises a rotor back iron 1, magnetic steel pressing plates 3 and a peripheral positioning ring 6, wherein the magnetic steel pressing plates 3 are uniformly distributed and fixed on the surface of the rotor back iron 1 along the circumferential direction, the rotor back iron 1 is provided with pressing plate fixing holes 12 which are in one-to-one correspondence with the magnetic steel pressing plates 3, a magnetic steel mounting groove for inserting the magnetic steel 2 along the radial outside and inside of the rotor back iron 1 is formed between the adjacent magnetic steel pressing plates 3, the side surface of the magnetic steel pressing plate 3 facing the magnetic steel mounting groove is provided with an axial limiting structure for limiting the axial movement of the magnetic steel 2 relative to the rotor back iron 1, and the peripheral positioning ring 6 is positioned at the periphery of the magnetic steel.
The use method of the magnetic steel positioning structure provided by the scheme of the invention comprises the following steps: the magnetic steel pressing plate 3 is connected and fixed on the surface of the rotor back iron 1 through connecting pieces such as pressing plate screws 5 and the like and the pressing plate fixing holes 12, then the magnetic steel 2 is inserted and fixed into a magnetic steel mounting groove between the adjacent magnetic steel pressing plates 3 from the outer side, and finally the peripheral positioning ring 6 is fixed on the outer rings of the magnetic steel pressing plate 3 and the magnetic steel 2. Adjacent magnet steel pressing plate 3 realizes magnet steel 2 at rotor back iron 1's ascending location of circumference to magnet steel 2 clamping action, and the axial limit structure of magnet steel pressing plate 3 side realizes magnet steel 2 at rotor back iron 1 axial location, and periphery holding ring 6 then radially retrains magnet steel 2 at rotor back iron 1 to resist the high-speed rotatory centrifugal force of rotor, prevent that magnet steel 2 from deviating from in the magnet steel mounting groove.
It should be noted that, in the scheme of the present invention, an axial limiting structure is designed on the side surface of the magnetic steel pressing plate 3, when the magnetic steel 2 is inserted into the magnetic steel mounting groove between two magnetic steel pressing plates 3, the axial limiting structure can limit the axial movement of the magnetic steel 2 relative to the rotor back iron 1, specifically, the axial limiting structure can be designed as an inclined limiting surface structure, the limiting surface structures on both sides can make the magnetic steel mounting groove form a wedge-shaped limiting groove with a large groove bottom and a small groove opening, and meanwhile, the two side surfaces of the magnetic steel 2 are designed as inclined surfaces attached to the side surfaces of the magnetic steel pressing plate 3, so that the axial positioning of the magnetic steel 2 can be realized; or the side of the magnetic steel pressing plate 3 is provided with a limiting bulge, the side of the magnetic steel 2 is provided with a limiting groove, and the limiting bulge is in clamping fit with the limiting groove to limit the magnetic steel 2 to move axially relative to the rotor back iron 1, and the like. The invention can carry out the specific structural design of the axial limiting structure according to the specific shape requirement of the magnetic steel 2. In a preferred embodiment of the present invention, the axial limiting structure is an axial limiting surface 34 formed on a side surface of the magnetic steel pressing plate 3, the axial limiting surfaces 34 of two adjacent magnetic steel pressing plates 3 and the surface of the rotor back iron 1 together form a magnetic steel mounting groove with a wedge-shaped cross section, the cross section width of the magnetic steel mounting groove is gradually reduced from the groove bottom to the groove opening direction, that is, a wedge-shaped matching surface is formed on the groove walls on two sides of the magnetic steel mounting groove to press the magnetic steel 2, so as to prevent the magnetic steel 2 from coming off along the axial direction of the rotor back iron 1.
Preferably, the width of the magnetic steel mounting groove is gradually reduced from outside to inside along the radial direction of the rotor back iron 1. As shown in fig. 3 and 4, the magnetic steel mounting groove and the magnetic steel 2 are both of a fan-shaped structure, the whole groove width is small, the outer end is large, and the inner end is small, so that the magnetic steel 2 can be smoothly inserted and fixed from the outer end to the inner end of the magnetic steel mounting groove, and the assembly operation is further facilitated.
It should be noted that, the rotor back iron 1 can realize the positioning of the magnetic steel pressing plate 3 through the pressing plate fixing holes 12, for example, the magnetic steel pressing plate 3 can be fixed on the rotor back iron 1 through the two pressing plate fixing holes 12, that is, all constraints on the degrees of freedom of the magnetic steel pressing plate 3 are formed. However, in order to further reduce the processing steps of the rotor back iron 1, the invention can only rely on the combination of one pressing plate fixing hole 12 and other positioning structures to realize the fixing constraint of the magnetic steel pressing plate 3. As shown in fig. 3 and 4, the rotor back iron 1 is further provided with an annular positioning step 7, the annular positioning step 7 is located at an inner ring position of each magnetic steel pressing plate 3 in the radial direction of the rotor back iron 1, and an end of the magnetic steel pressing plate 3 abuts against the outer periphery of the annular positioning step 7. So set up, when magnetic steel clamp plate 3 only relies on a clamp plate fixed orifices 12 to connect in rotor back iron 1, magnetic steel clamp plate 3 can also rotate around the relative rotor back iron 1 in the axle center of clamp plate fixed orifices 12, and with magnetic steel clamp plate 3 towards the one end butt at rotor back iron 1 center in the periphery of annular location step 7, because annular location step 7 can restrict magnetic steel clamp plate 3's rotation action to just can realize the fixed restraint to magnetic steel clamp plate 3.
It should be noted that the end of the magnetic steel pressing plate 3 may be designed into various structural forms, such as an arc surface, a plane, an elliptical arc surface, a V-shaped surface, and so on, and the outer peripheral surface of the annular positioning step 7 is designed to be correspondingly matched, so as to realize the constraint of the rotational freedom of the magnetic steel pressing plate 3, preferably, referring to fig. 3 and 4, the outer peripheral surface of the annular positioning step 7 is a cylindrical surface, the end surface of the magnetic steel pressing plate 3, which is used for abutting against one end of the annular positioning step 7, is an arc surface 33 which is attached to the outer periphery of the annular positioning step 7, that is, the curvature of the arc surface 33 is the same as the curvature of the outer peripheral surface of the annular positioning step 7, and when the two are attached and abutted, the magnetic steel pressing plate 3 cannot rotate around the axis.
It should be noted that the pressing plate fixing hole 12 in the present invention may be designed as a threaded hole, a blind hole, or a through hole, or may be designed as a square hole, a hole with a triangular or other polygonal cross section, and the connecting member for fixing the magnetic steel pressing plate 3 to the rotor back iron 1 may be a screw, a pin, or a prism rod, and the like.
It should be noted that, the function of the peripheral positioning ring 6 is to restrain the magnetic steel 2 in the outer circumferential direction of the rotor back iron 1 to resist the centrifugal force of the rotor rotating at high speed, so as to prevent the magnetic steel 2 from coming out of the magnetic steel mounting groove and ensure the safety of the rotor in the process of operation. The periphery holding ring 6 can be selected for use metal material or the polymer material that satisfies the intensity demand etc. preferably, the periphery holding ring 6 is the carbon fiber ring. The carbon fiber ring has the advantages of light weight, high strength, easy processing and the like.
The invention has the following beneficial effects:
1) the magnetic steel positioning structure provided by the scheme of the invention can realize the axial, circumferential and radial positioning of the magnetic steel 2 on the rotor back iron 1, and ensure the stable structure of the rotor;
2) the scheme of the invention cancels a boss structure on the surface of the existing rotor back iron, can realize the fixation of the magnetic steel pressing plate 3 only by processing the pressing plate fixing hole 12, and greatly reduces the processing difficulty and the manufacturing cost of the rotor back iron 1.
The invention also provides a motor comprising the magnetic steel positioning structure. The derivation process of the beneficial effect of the motor is substantially similar to the derivation process of the beneficial effect brought by the magnetic steel positioning structure, and therefore the description is omitted.
It should be noted that the motor provided by the present invention is specifically a disc motor, and specifically may be a disc motor with a middle stator and two side rotors, and may also be a disc motor with a single stator and a single rotor.
The invention also provides a mounting tool of the magnetic steel positioning structure, which is used for mounting and positioning the magnetic steel positioning structure and comprises the following components:
the pressing plate positioning ring 4 is used for fixing the relative position between every two adjacent magnetic steel pressing plates 3, the pressing plate positioning ring 4 comprises first pressing plate positioning structures which correspond to the magnetic steel pressing plates 3 one by one, each magnetic steel pressing plate 3 is provided with a second pressing plate positioning structure in limit fit with the first pressing plate positioning structures, and the second pressing plate positioning structures and the pressing plate fixing holes 12 have preset distances in the radial direction of the rotor back iron 1;
and the tooling positioning structure is used for positioning the relative position of the pressure plate positioning ring 4 and the rotor back iron 1.
It should be noted that, there is the predetermined distance in the footpath of rotor back iron 1 with clamp plate fixed orifices 12 above-mentioned second clamp plate location structure, and its effect guarantees that magnet steel clamp plate 3 can't take place to rotate relative to rotor back iron 1 when clamp plate holding ring 4 and magnet steel clamp plate 3 spacing cooperation to guaranteed that the interval and the contained angle of two adjacent magnet steel clamp plates 3 are the default, and then be convenient for can insert the magnet steel 2 the same shape smoothly in the magnet steel mounting groove between two arbitrary adjacent magnet steel clamp plates 3.
It should be noted that, the first pressing plate positioning structure and the second pressing plate positioning structure may be designed in various structural forms, for example, as a protruding block and a groove structure which are mutually snap-fitted, or as a pin and a pin hole structure, or as a limit profile fitting structure, etc. In addition, the pressing plate positioning ring 4 can be placed at different positions of the magnetic steel pressing plate 3 or the rotor back iron 1 to realize the installation and positioning of the magnetic steel pressing plate 3, for example, when the first pressing plate positioning structure and the second pressing plate positioning structure are designed into mutually clamped and matched bump and groove structures, the pressing plate positioning ring 4 can be arranged at the outer circumference position of the rotor back iron 1 and can position each magnetic steel pressing plate 3 from the outer end; when first and second clamp plate location structure design is pin and pinhole structure, clamp plate holding ring 4 can arrange the top of the up end of all magnet steel pressing plate 3 (being magnet steel pressing plate 3 the surface of the one end of keeping away from rotor back iron 1 along the axial of rotor back iron 1 promptly), this moment can be through seting up the pinhole at magnet steel pressing plate 3's up end, then utilize clamp plate holding ring 4 from the pin of taking and pinhole cooperation in order to realize the location to magnet steel pressing plate 3, etc.
Preferably, one side end face of the pressing plate positioning ring 4 in the scheme of the present invention is provided with positioning bosses 42 corresponding to the magnetic steel pressing plates 3 one to one, the positioning bosses 42 are located at the outer ends of the magnetic steel pressing plates 3 in the radial direction of the rotor back iron 1, the first pressing plate positioning structure is a positioning flange 43 arranged on the positioning bosses 42, the second pressing plate positioning structure is a positioning groove 31 arranged at the outer end of the magnetic steel pressing plates 3 in the radial direction of the rotor back iron 1, and the positioning flange 43 is in clamping fit with the positioning groove 31 and limits the relative rotation of the magnetic steel pressing plates 3 and the pressing plate positioning ring 4 in the circumferential direction of the rotor back iron.
It should be noted that the positioning boss 42 may be disposed on any end surface of the pressure plate positioning ring 4, that is, when the pressure plate positioning ring 4 is located above the upper end surface of each magnetic steel pressure plate 3, the positioning boss 42 is located on the end surface of the pressure plate positioning ring 4 facing the rotor back iron 1; when the pressing plate positioning ring 4 is located below the lower end face of each magnetic steel pressing plate 3, the positioning boss 42 is located on the end face of the pressing plate positioning ring 4 facing the magnetic steel pressing plate 3, that is, on the upper end face of the pressing plate positioning ring 4. It should be noted that no matter which arrangement scheme is adopted, the pressing plate positioning ring 4 needs to be fixed with the relative position between the rotor back iron 1 through the tool positioning structure, and thus accurate constraint positioning can be carried out on the position of each magnetic steel pressing plate 3.
As shown in fig. 1 to 3, in a preferred embodiment, an annular tooling positioning step is disposed on the periphery of the rotor back iron 1, the pressing plate positioning ring 4 is fixed on the step surface of the tooling positioning step, and the tooling positioning structure includes a positioning pin, a first tooling positioning hole 11 disposed on the tooling positioning step, and a second tooling positioning hole 41 disposed on the pressing plate positioning ring 4. It should be noted that, in order to guarantee that magnet steel 2 can insert the magnet steel mounting groove smoothly from the outer end, clamp plate holding ring 4 installs and can not block the outer end opening of magnet steel mounting groove behind the frock location step, promptly, clamp plate holding ring 4's thickness needs the height of design for less than or equal to frock location step, design like this can guarantee clamp plate holding ring 4 and the relative fixed back of rotor back iron 1, clamp plate holding ring 4's up end is in the below of magnet steel clamp plate 3's lower terminal surface, promptly, clamp plate holding ring 4's up end can not be higher than the upper surface of the rotor back iron 1 of magnet steel clamp plate 3 contact, thereby dodge the outer end notch of magnet steel mounting groove. In addition, should also design according to above-mentioned requirement when clamp plate holding ring 4 arranges in the up end of each magnet steel clamp plate 3, promptly, guarantees that the lower terminal surface of clamp plate holding ring 4 can not block the notch of magnet steel mounting groove.
The installation process of the pressure plate positioning ring 4 is as follows: connect to rotor back iron 1 through clamp plate screw 5 with each magnet steel clamp plate 3 earlier, then, fix clamp plate holding ring 4 on rotor back iron 1's frock location step through the locating pin, simultaneously, with each location boss 42 and each magnet steel clamp plate 3 one-to-one to with locating flange 43 joint to in magnet steel clamp plate 3's the constant head tank 31, at this moment, each degree of freedom of magnet steel clamp plate 3 all receives the restraint, thereby accomplished magnet steel clamp plate 3 relative rotor back iron 1's installation location. Then, with each magnet steel 2 along the radial of rotor back iron 1, in the outside-in pushed magnet steel mounting groove between each adjacent magnet steel clamp plate 3, finally, the magnet steel installation finishes the back, takes off clamp plate holding ring 4 to at the position installation periphery holding ring 6 that the frock location step corresponds, so far, realize the assembly of rotor dish.
The installation tool of the magnetic steel positioning structure provided by the scheme of the invention can quickly and accurately fix each magnetic steel pressing plate 3 on the rotor back iron 1, thereby ensuring that the magnetic steel 2 is smoothly inserted into the magnetic steel installation groove, simplifying the installation and positioning processes of the magnetic steel 2 and ensuring the positioning precision.
The magnetic steel positioning structure and the installation tool provided by the invention can be applied to the disk type motor rotor disks of a middle stator and two side rotors, and can also be applied to the disk type motor rotor disk of a single stator and a single rotor.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use 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 (10)
1. A magnetic steel positioning structure is characterized by comprising a rotor back iron (1), magnetic steel pressing plates (3) and a peripheral positioning ring (6), wherein the magnetic steel pressing plates (3) are uniformly distributed and fixed on the surface of the rotor back iron (1) along the circumferential direction, the rotor back iron (1) is provided with pressing plate fixing holes (12) which are in one-to-one correspondence with the plurality of magnetic steel pressing plates (3), a magnetic steel mounting groove for inserting the magnetic steel (2) along the radial direction of the rotor back iron (1) from outside to inside is formed between the adjacent magnetic steel pressing plates (3), the side surface of the magnetic steel pressing plate (3) facing the magnetic steel mounting groove is provided with an axial limiting structure for limiting the magnetic steel (2) to move axially relative to the rotor back iron (1), the periphery positioning ring (6) is located on the periphery of the magnetic steel pressing plate (3) and the magnetic steel (2) along the radial direction of the rotor back iron (1).
2. The magnetic steel positioning structure according to claim 1, wherein the axial limiting structure is an axial limiting surface (34) formed on a side surface of the magnetic steel pressing plate (3), the axial limiting surfaces (34) of two adjacent magnetic steel pressing plates (3) and the surface of the rotor back iron (1) jointly form the magnetic steel mounting groove with a wedge-shaped cross section, and the cross section width of the magnetic steel mounting groove is gradually reduced from the groove bottom to the groove opening.
3. A magnetic steel positioning structure according to claim 1, wherein the rotor back iron (1) is provided with an annular positioning step (7), the annular positioning step (7) is located at an inner ring position of each magnetic steel pressing plate (3) in the radial direction of the rotor back iron (1), and an end of the magnetic steel pressing plate (3) abuts against the outer periphery of the annular positioning step (7).
4. A magnetic steel positioning structure according to claim 3, wherein the end surface of the magnetic steel pressing plate (3) used for abutting against one end of the annular positioning step (7) is an arc surface (33) attached to the outer periphery of the annular positioning step (7).
5. A magnetic steel positioning structure according to claim 1, wherein the pressing plate fixing hole (12) is a threaded hole, and the magnetic steel pressing plate (3) is fixed to the pressing plate fixing hole (12) by a pressing plate screw (5).
6. A magnetic steel positioning structure according to any of claims 1 to 5, characterized in that the peripheral positioning ring (6) is a carbon fiber ring.
7. An electrical machine comprising a magnetic steel positioning structure as claimed in any one of claims 1 to 6.
8. An installation frock of magnet steel location structure, be used for the installation location of the magnet steel location structure of any one of claims 1 to 6, include:
the pressing plate positioning ring (4) is used for fixing the relative position between every two adjacent magnetic steel pressing plates (3), the pressing plate positioning ring (4) comprises first pressing plate positioning structures corresponding to the magnetic steel pressing plates (3) one by one, each magnetic steel pressing plate (3) is provided with a second pressing plate positioning structure in limit fit with the first pressing plate positioning structures, and the second pressing plate positioning structures and the pressing plate fixing holes (12) have preset distances in the radial direction of the rotor back iron (1);
and the tool positioning structure is used for positioning the relative position of the pressing plate positioning ring (4) and the rotor back iron (1).
9. The mounting tool according to claim 8, wherein a positioning boss (42) corresponding to each magnetic steel pressing plate (3) in a one-to-one manner is arranged on one side end face of the pressing plate positioning ring (4), the positioning boss (42) is located at the outer end position of the magnetic steel pressing plate (3) in the radial direction of the rotor back iron (1), the first pressing plate positioning structure is a positioning flange (43) arranged on the positioning boss (42), the second pressing plate positioning structure is a positioning groove (31) arranged at the outer end of the magnetic steel pressing plate (3) in the radial direction of the rotor back iron (1), and the positioning flange (43) is in clamping fit with the positioning groove (31) and limits the relative rotation of the magnetic steel pressing plate (3) and the pressing plate positioning ring (4) in the circumferential direction of the rotor back iron (1).
10. The mounting tool according to claim 9, wherein an annular tool positioning step is arranged on the periphery of the rotor back iron (1), the pressing plate positioning ring (4) is fixed on the step surface of the tool positioning step, and the tool positioning structure comprises a positioning pin, a first tool positioning hole (11) arranged on the tool positioning step and a second tool positioning hole (41) arranged on the pressing plate positioning ring (4).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033690.6A CN113131646A (en) | 2020-01-13 | 2020-01-13 | Magnetic steel positioning structure, motor and mounting tool of magnetic steel positioning structure |
| PCT/CN2020/114463 WO2021143163A1 (en) | 2020-01-13 | 2020-09-10 | Magnetic steel positioning structure, motor, and installation tooling for magnetic steel positioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010033690.6A CN113131646A (en) | 2020-01-13 | 2020-01-13 | Magnetic steel positioning structure, motor and mounting tool of magnetic steel positioning structure |
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| Publication Number | Publication Date |
|---|---|
| CN113131646A true CN113131646A (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010033690.6A Pending CN113131646A (en) | 2020-01-13 | 2020-01-13 | Magnetic steel positioning structure, motor and mounting tool of magnetic steel positioning structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113131646A (en) |
| WO (1) | WO2021143163A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114678979A (en) * | 2022-03-17 | 2022-06-28 | 上海盘毂动力科技股份有限公司 | Axial magnetic field motor rotor |
| CN114678978A (en) * | 2022-03-17 | 2022-06-28 | 上海盘毂动力科技股份有限公司 | Axial magnetic field motor rotor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN216751471U (en) * | 2022-01-19 | 2022-06-14 | 亿昇(天津)科技有限公司 | Magnetic steel pasting and positioning tool |
| CN117424369A (en) * | 2023-04-17 | 2024-01-19 | 宁德时代(上海)智能科技有限公司 | Motor rotor, motor, power assembly and electric equipment |
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| JP2013021826A (en) * | 2011-07-12 | 2013-01-31 | Seiko Epson Corp | Electromechanical device, rotor, magnet unit, manufacturing method thereof and movable body and robot using electromechanical device |
| CN202840738U (en) * | 2012-09-28 | 2013-03-27 | 深圳市瀚美特科技有限公司 | Permanent magnet axial DC motor and permanent magnet iron-coreless DC motor rotor assembly thereof |
| CN103384098B (en) * | 2013-05-23 | 2015-06-17 | 杭州娃哈哈科技有限公司 | Disc type motor rotor |
| CN104333158A (en) * | 2014-10-11 | 2015-02-04 | 镇江中船现代发电设备有限公司 | Permanent magnet motor rotor structure |
| CN106505767B (en) * | 2016-12-07 | 2019-03-15 | 哈尔滨工业大学 | Surface-mount type speed permanent magnet synchronous motor rotor with stacked metal pole piece spacing |
| CN207021789U (en) * | 2017-05-31 | 2018-02-16 | 常州高尔登科技有限公司 | A kind of motor and its rotor disk |
| CN206894382U (en) * | 2017-07-03 | 2018-01-16 | 苏州英磁新能源科技有限公司 | A kind of antidetonation disk type electric motor rotor |
| CN206894380U (en) * | 2017-07-03 | 2018-01-16 | 苏州英磁新能源科技有限公司 | A kind of new fixing groove disk type electric motor rotor and motor |
| CN107492962A (en) * | 2017-08-31 | 2017-12-19 | 杭州中豪电动科技股份有限公司 | A kind of magnetic steel fixed structure of disc type electric machine |
| CN107579615A (en) * | 2017-10-30 | 2018-01-12 | 南京磁谷科技有限公司 | A kind of interpolar filling block arrangement of durface mounted permanent magnet rotor |
| CN208158266U (en) * | 2018-03-23 | 2018-11-27 | 上海大郡动力控制技术有限公司 | The fixed structure of magnet steel in disk type electric motor rotor component |
| CN108808921B (en) * | 2018-08-31 | 2024-02-27 | 上海盘毂动力科技股份有限公司 | Disc rotor and disc motor |
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- 2020-01-13 CN CN202010033690.6A patent/CN113131646A/en active Pending
- 2020-09-10 WO PCT/CN2020/114463 patent/WO2021143163A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114678979A (en) * | 2022-03-17 | 2022-06-28 | 上海盘毂动力科技股份有限公司 | Axial magnetic field motor rotor |
| CN114678978A (en) * | 2022-03-17 | 2022-06-28 | 上海盘毂动力科技股份有限公司 | Axial magnetic field motor rotor |
| CN114678979B (en) * | 2022-03-17 | 2023-12-26 | 上海盘毂动力科技股份有限公司 | Axial magnetic field motor rotor |
| CN114678978B (en) * | 2022-03-17 | 2024-08-20 | 上海盘毂动力科技股份有限公司 | Axial magnetic field motor rotor |
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| Publication number | Publication date |
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| WO2021143163A1 (en) | 2021-07-22 |
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