CN214380371U

CN214380371U - Air blowing cylinder motor with hollow cup structure

Info

Publication number: CN214380371U
Application number: CN202120281410.3U
Authority: CN
Inventors: 李国锋; 钟平先; 匡纲要
Original assignee: China Drive Motors Shenzhen Co ltd
Current assignee: Shenzhen Zhongqu Motor Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-10-08
Anticipated expiration: 2031-02-01

Abstract

The utility model discloses a hollow cup structure section of thick bamboo motor of blowing, including the casing, install in stator and rotor in the casing, the stator includes ring shape hollow cup structure stator core, insulating spacer, a plurality of group's coil, is used for fixing the location gum cover and the coil clamp plate of coil, the location gum cover with the central axial of coil clamp plate is offered and is used for wearing to establish the through-hole of rotor, the even interval arrangement of a plurality of group's coil in the periphery of location gum cover, insulating spacer is located the periphery of a plurality of group's coil, just insulating spacer is inserted and is located in the stator core, the coil clamp plate set up in the one end of location gum cover is pushed down the coil. Compared with the prior art, the utility model discloses solution tooth's socket effect that can be fine reduces electromagnetic interference, and the noise reduction improves motor efficiency and energy conversion rate.

Description

Air blowing cylinder motor with hollow cup structure

Technical Field

The utility model relates to the technical field of motors, in particular to a hollow cup structure section of thick bamboo motor of blowing.

Background

The existing motor stator core usually has a tooth space structure, wherein, the protruded uniform flange inside the stator core becomes teeth, the cavity between two teeth is called tooth space, the teeth are used to guide magnetic lines of force, reduce magnetic resistance, the tooth space is used to inlay winding and interlink with the magnetic lines of force in the teeth, the different magnetic conductibility of the teeth and the tooth space makes the rotor have unequal number of magnetic lines of force at different positions, at the position where the magnetic pole is aligned with the stator teeth, the ferromagnet attracts to block the rotation of the motor rotor, which is called as the tooth space effect and the tooth space resistance moment of the motor.

The coil is usually installed in the tooth socket of the existing motor, and the installation mode not only needs special equipment to manufacture and has high equipment investment, but also has low full-slot rate of the coil, low efficiency and low energy conversion rate and is easy to generate the tooth socket effect.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a hollow cup structure section of thick bamboo motor of blowing aims at solving the tooth's socket effect, reduces electromagnetic interference, and the noise reduction improves motor efficiency and energy conversion rate.

For realizing the above-mentioned purpose, the utility model provides a hollow cup structure section of thick bamboo motor of blowing, including the casing, install in stator and rotor in the casing, the stator includes ring shape hollow cup structure stator core, insulating spacer, a plurality of group's coil, is used for fixing the location gum cover and the coil clamp plate of coil, the location gum cover with the central axial of coil clamp plate is offered and is used for wearing to establish the through-hole of rotor, a plurality of groups coil even interval arrangement in the periphery of location gum cover, insulating spacer is located the periphery of a plurality of group's coil, just insulating spacer is inserted and is located in the stator core, the coil clamp plate set up in the one end of location gum cover is pushed down the coil.

The utility model discloses a further technical scheme is, a plurality of archs have evenly been arranged to the periphery of location gum cover, and the construction is used for the installation between two adjacent archs the coil groove of coil.

The utility model discloses a further technical scheme is, the coil groove is fan-shaped structure.

The utility model discloses a further technical scheme is, being close to of coil clamp plate one side of coil evenly arranged with the corresponding fan-shaped boss of coil groove.

The utility model discloses a further technical scheme is, stator core, coil clamp plate pass through the screw install in on the casing, stator core's periphery axial has been seted up and has been supplied to wear to establish a plurality of recesses of screw, the periphery of coil clamp plate is provided with and supplies to wear to establish a plurality of via holes of screw.

The utility model adopts the further technical scheme that the bearing device also comprises a motor end cover, a bearing chamber for installing a bearing is arranged in the motor end cover or outside the motor end cover and in the casing or outside the casing, a bearing sleeve is arranged in the bearing chamber and is sleeved outside the bearing, the rotor comprises a rotating shaft, and two ends of the rotating shaft are respectively arranged in the bearing in a penetrating way; the motor end cover is provided with a spigot, and the top of the shell is provided with a spigot position matched with the spigot, wherein the top of the shell is provided with a spigot step structure to form a spigot position for mounting the motor cover; the bearing sleeve is made of one of rubber, silica gel or plastic.

The utility model discloses a further technical scheme is, the centre of pivot is provided with the magnetic ring, be provided with between the both ends of magnetic ring and the bearing and be used for pre-compaction the becket of bearing, the preparation material of becket is one of copper, iron or aluminum alloy.

The utility model discloses a further technical scheme be, still include with the magnesium alloy fan blade that the output of pivot is connected, the pivot is passed the casing with the magnesium alloy fan blade is connected, the quantity of magnesium alloy fan blade is 11 pieces or 13 pieces.

The utility model discloses a further technical scheme is, the front end of casing is provided with the wind channel, the wind channel with casing integrated into one piece, the material in wind channel is zinc alloy, perhaps aluminum alloy, perhaps plastic material.

The utility model discloses a further technical scheme is, be provided with the arc locating plate that two at least intervals set up in the casing, the arc locating plate that two at least intervals set up forms half surrounding structure right stator core carries out radial positioning.

The utility model discloses a beneficial effect of a hollow cup structure section of thick bamboo motor of blowing is: the utility model discloses an above-mentioned technical scheme, including the casing, install in stator and rotor in the casing, the stator includes ring shape coreless cup structure stator core, insulating spacer, a plurality of group's coil, is used for fixing the location gum cover and the coil clamp plate of coil, the location gum cover with the central axial of coil clamp plate is offered and is used for wearing to establish the through-hole of rotor, the even interval arrangement of a plurality of group's coil in the periphery of location gum cover, insulating spacer is located the periphery of a plurality of group's coil, just insulating spacer is inserted and is located in the stator core, the coil clamp plate set up in the one end of location gum cover is pushed down the coil, solution tooth's socket effect that can be fine reduces electromagnetic interference, and the noise reduction improves motor efficiency and energy conversion rate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 structures shown in the drawings without creative efforts.

Fig. 1 is an exploded schematic view of a preferred embodiment of a blower motor with a hollow cup structure according to the present invention;

FIG. 2 is an assembly schematic of a three-jaw motor end cap;

FIG. 3 is an assembly schematic of a six-jaw motor end cap;

FIG. 4 is a schematic view of an internally mounted bearing arrangement;

FIG. 5 is a cross-sectional view taken in the direction E-E of FIG. 4;

FIG. 6 is a schematic view of an outboard bearing type structure;

FIG. 7 is a cross-sectional view taken in the direction D-D of FIG. 6;

FIG. 8 is a schematic view of a coil assembly;

FIG. 9 is another schematic view of a coil assembly;

FIG. 10 is a schematic view of the positioning rubber sleeve;

FIG. 11 is a schematic view of the structure of the coil platen;

FIG. 12 is a schematic view of a metal ring assembly;

FIG. 13 is a schematic view of the assembly of the motor end cap with the housing;

FIG. 14 is an assembly schematic view of a fan blade;

FIG. 15 is a schematic view of the positioning plate;

FIG. 16 is a schematic view of the structure of the housing;

FIG. 17 is a schematic structural view of a three-jaw motor end cap;

FIG. 18 is another schematic view of a three-jaw motor end cap;

FIG. 19 is a schematic structural view of a six-jaw motor end cap;

FIG. 20 is a schematic view of a PCB board;

fig. 21 is an assembly view of the pin.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Casing (CN)	16	Rotating shaft
2	Stator core	17	Spigot
				3	Insulating spacer	18	Magnetic ring
4	Coil	19	Metal ring
				5	Positioning rubber sleeve	20	Fan blade
6	Coil pressing plate	21	Positioning plate
				7	Projection	22	PCB board
8	Coil slot	23	PCB hole
				9	Fan-shaped boss	24	Pin insertion
10	Screw with a thread	25	Heat-shrinkable sleeve
				11	Flange	26	Insulating sheet
12	Motor end cover	27	Terminal seat
				13	Bearing assembly	28	Outer ring of bearing
14	Bearing chamber	29	Inner ring of bearing
				15	Bearing sleeve

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Please refer to fig. 1 to 21, the utility model provides a hollow cup structure section of thick bamboo motor of blowing, this hollow cup structure section of thick bamboo motor preferred embodiment of blowing includes casing 1, install stator and rotor in casing 1, the stator includes ring shape hollow cup structure stator core 2, insulating spacer 3, a plurality of group's coil 4, a location gum cover 5 and coil clamp plate 6 for fixed coil 4, the through-hole that is used for wearing to establish the rotor is offered to the central axial of location gum cover 5 and coil clamp plate 6, a plurality of group's coil 4 even interval arrangement are in the periphery of location gum cover 5, the periphery of a plurality of group's coil 4 is located to insulating spacer 3, and insulating spacer 3 inserts and locates in stator core 2, coil clamp plate 6 sets up in the one end of location gum cover 5, push down coil 4.

In this embodiment, the shape of the coil 4 may be a sector shape or a cylindrical shape, but the present invention is not limited thereto.

The stator core 2 of the air blowing cylinder motor with the hollow cup structure is circular and similar to a cup in shape, so that the air blowing cylinder motor is called as the hollow cup structure, the stator core 2 does not adopt tooth spaces, discontinuous iron teeth are removed from an air gap of the motor, the tooth space effect can be safely and effectively solved, the electromagnetic interference is reduced, the noise is reduced, and the energy conversion rate is improved by 20-30%.

The material of the casing 1 can be zinc alloy, or aluminum alloy, plastic material, further reduce the noise produced when the motor operates.

In this embodiment, a plurality of protrusions 7 are uniformly arranged on the periphery of the positioning rubber sleeve 5, and a coil slot 8 for installing the coil 4 is constructed between two adjacent protrusions 7.

The slot fill factor is the ratio of the cross-sectional area occupied by the copper wire in the coil slot 8 to the total amount of space available in the bare slot. In the embodiment, because the tooth form of the stator core 2 is removed, the area for accommodating the coil 4 is greatly increased, the full rate of the coil slot 8 is improved, the full rate of the coil slot 8 is high, the running current of the motor is favorably reduced, the heating of the motor is further reduced, the efficiency is favorably improved, and the material cost of the motor is reduced.

In this embodiment, the coil slot 8 has a fan-shaped structure. Fan-shaped bosses 9 corresponding to the coil slots 8 are uniformly arranged on one side of the coil pressing plate 6 close to the coils 4.

Specifically, in this embodiment, six coils 4 may be adopted, and six coil grooves 8 may be correspondingly provided on the outer periphery of the positioning rubber sleeve 5. When the stator core is installed, the six coils 4 are firstly placed into the six coil slots 8 on the periphery of the positioning rubber sleeve 5, the insulating spacer sleeve 3 is sleeved on the positioning rubber sleeve, then the stator core 2 is inserted, and finally the coil pressing plate 6 is covered on the positioning rubber sleeve to press the coils 4. When the coil pressing plate 6 is covered, the fan-shaped bosses 9 are buckled into the corresponding coil grooves 8.

In this embodiment, stator core 2, coil clamp plate 6 pass through screw 10 and install on casing 1, and stator core's periphery axial is seted up and is supplied to wear to establish a plurality of recesses of screw 10, and coil clamp plate 6's periphery is provided with a plurality of via holes that supply to wear to establish screw 10.

Specifically, this embodiment evenly sets up three recess in stator core's periphery axial, sets up corresponding three flange 11 in coil clamp plate 6's periphery, sets up the via hole that is used for wearing to establish screw 10 on three flange 11 respectively, when the installation, wears to establish the screw through three recess, via hole to conveniently install stator core 2, coil clamp plate 6 on casing 1.

Further, in this embodiment, the blower motor with a hollow cup structure further includes a motor end cover 12, a bearing chamber 14 for installing a bearing 13 is provided in the motor end cover 12 or outside the motor end cover 12, in the casing 1 or outside the casing 1, a bearing sleeve 15 is provided in the bearing chamber 14, the bearing sleeve 15 is sleeved outside the bearing 13, the rotor includes a rotating shaft 16, and two ends of the rotating shaft 16 are respectively penetrated through the bearing 13.

The bearing chamber 14 in this embodiment may be disposed inside or outside the motor end cover 12, inside the casing 1, or outside the casing 1, which is not limited in this embodiment. This embodiment has very obvious shock attenuation effect through increase bearing housing 15 flexible construction in bearing room 14 to can prevent that off-centre problem from causing defects such as noise, demagnetization that friction magnetic ring 18 produced under the high-speed condition, the restriction that the rotational speed that the perfect solution traditional structure (rigid structure) caused in the market is lower, can furthest improve the rotational speed of motor, increase wind speed, negative pressure, raise the efficiency, reach the purpose of high rotational speed, big efficiency, low noise.

It should be noted that, the two supporting points are all rigid surfaces which are in direct contact and are called as rigid contact structures, which are called as rigid structures for short; if the rigid surfaces of the two supporting points are not in direct contact, but elastic materials are added as buffer units, the flexible contact structure is called as a flexible contact structure for short. For example, the bearing 13 is metal, the housing 1, the motor end cover 12, and the housing 1 air duct are metal, and the elastic bearing sleeve 15 is added in the motor end cover 12 or the bearing chamber 14 outside the motor end cover 12, inside the housing 1, or outside the housing 1, so that the flexible contact is achieved, wherein the material of the bearing sleeve 15 may be one of rubber, silica gel, or plastic.

In this embodiment, the position of the bearing 13 may be either the built-in bearing 13 or the externally-mounted bearing 13. The mode of internally installing the bearing 13 means that the bearing 13 is installed inside an assembly body (the shell 1 and the motor end cover 12), and simply means that the openings of the bearing sleeves 15 face the magnetic rings 18; the external bearing 13 mode is that the bearing 13 is installed outside the assembly body (the machine shell 1 and the motor end cover 12), and the bearing sleeve 15 is simply opened to face away from the magnetic ring 18.

In addition, in the embodiment, the motor end cover 12 adopts a unique spigot 17 design, and the spigot 17 can ensure the installation concentricity with the machine shell 1 and can be used as a fixed frame for axial positioning of the bearing 13.

Specifically, motor end cover 12 is equipped with tang 17, the top of casing 1 be provided with tang 17 matched with tang position, wherein, the top of casing 1 is provided with tang stair structure, forms and is used for installing the tang position of motor cover 12.

The motor end cover 12 may have a three-jaw structure or a six-jaw structure.

In this embodiment, a magnetic ring 18 is disposed in the middle of the rotating shaft 16, and a metal ring 19 for pre-compressing the bearing 13 is disposed between two ends of the magnetic ring 18 and the bearing 13.

In this embodiment, the two metal rings 19 are in contact with only the outer ring 29 of the bearing and not with the outer ring 28 of the bearing.

Two metal rings 19 and magnet ring 18 are assembled to form dimension T1, and two bearings 13 are assembled to form dimension T2. The motor end cover 12 is assembled with the housing 1 to form a dimension T3. By calculation, when T2 is greater than T3, after the screws are locked, the casing 1 and the motor end cover 12 are tightly attached, the outer rings 28 of the two bearings are in an active state because they do not contact the metal ring 19, and because the size of T2 is larger than that of T3, they are pressed by the bearing sleeve 15 to form an axial force, i.e., a pre-pressure.

In the embodiment, the metal ring 19 is adopted to pre-compress the bearing 13 to replace the spring connection, so that the hidden trouble of spring failure can be safely solved. The metal ring 19 may be made of copper, aluminum, iron, or aluminum alloy.

In addition, in the embodiment, the rotating body of the magnetic ring 18 is arranged between the two bearings 13 (a simple beam structure), so that the magnetic ring is safe and reliable, and the rotating shaft 16 has good rigidity and runs more stably at a high rotating speed (10-15 ten thousand revolutions per minute).

In this embodiment, the air blowing cylinder motor with the hollow cup structure further includes magnesium alloy blades 20 connected to an output end of the rotating shaft 16, the rotating shaft 16 penetrates through the casing 1 and is connected to the magnesium alloy blades 20, and the number of the magnesium alloy blades 20 is 11 or 13.

Specifically, the fan blade 20 adopts an Archimedes spiral curved surface design, the fan blade 20 adopts 11 or 13 pieces, the wind pressure and the wind volume can be ensured, meanwhile, the end part of the fan blade 20 adopts an arc-shaped structure, the wind inlet efficiency of the fan blade 20 can be ensured, and meanwhile, the wind noise is greatly reduced.

The fan blades 20 are made of magnesium alloy, so that high-frequency sound can be improved, the weight of the load fan blades 20 is reduced, and wind noise is reduced. The density of the magnesium alloy is about 2/3 of aluminum, 1/4 of steel, and the weight is almost close to that of the plastic fan blade 20, so that the load of the bearing 13 is reduced, the high-frequency sound is greatly reduced, and meanwhile, the service life of the bearing 13 is prolonged. When the magnesium alloy is subjected to impact load, the absorbed energy is larger than that of an aluminum alloy piece, and the magnesium alloy has good shock resistance and noise reduction performance.

Of course, in other embodiments, the fan blade 20 may also be made of aluminum alloy or plastic material.

In this embodiment, the front end of the casing 1 is provided with an air duct, the air duct and the casing 1 are integrally formed, the material of the air duct may be one of zinc alloy, aluminum alloy or plastic material, in other embodiments, other materials may also be used, and this embodiment is not limited thereto.

Specifically, in the present embodiment, seven archimedes spiral curved surfaces are designed as the air guide groove (air duct), and the air guide groove and the casing 1 are integrally formed, so that the air outlet area can be increased, the air outlet efficiency can be improved, the wind noise of the motor can be reduced, and the energy consumption can be reduced.

At least two arc positioning plates 21 arranged at intervals are arranged in the machine shell 1, and the at least two arc positioning plates 21 arranged at intervals form a semi-surrounding structure to radially position the stator core 2.

This embodiment adopts half to surround the structure and carries out radial positioning to stator core 2, and casing 1 is as motor support simultaneously, can save space, lets structure axial length significantly reduce, saves installation space, reduces the amount of return air simultaneously, increase air inlet and air-out efficiency. In addition, in the embodiment, the inside of the casing 1 is designed to be a boss structure, so that the moment generated when the fan operates can be closer to the end of the bearing 13, and the moment borne by the bearing 13 can be reduced. In this embodiment, the rear end of the fan blade 20 is designed to be a flange structure, so as to increase the contact area and make the positioning more firm.

In this embodiment, this air blowing tube motor of coreless structure still includes PCB board 22 and insulating line frame, is equipped with six PCB diaphragm orifices 23 on the PCB board 22, beats six contact pins 24 on the insulating frame as leading electrical pillar, leads electrical pillar and both regard as the automatic coil winding machine reference column, electrically conducts PCB board 22 binding post simultaneously, connects electrically conductively as the star type simultaneously, contact pin 24 is provided with heat shrinkage bush 25 outward.

The PCB 22 set up in the rear end of motor end cover 12, just PCB 22 with be provided with insulating piece 26 between the motor end cover 12, be provided with terminal seat 27 on the PCB 22.

The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.

Claims

1. The utility model provides a hollow cup structure section of thick bamboo motor of blowing, its characterized in that, including the casing, install in stator and rotor in the casing, the stator includes ring shape hollow cup structure stator core, insulating spacer, a plurality of group's coil, is used for fixing the location gum cover and the coil clamp plate of coil, the location gum cover with the central axial of coil clamp plate is offered and is used for wearing to establish the through-hole of rotor, a plurality of groups coil even interval arrange in the periphery of location gum cover, insulating spacer locates the periphery of a plurality of groups coil, just insulating spacer inserts and locates in the stator core, the coil clamp plate set up in the one end of location gum cover pushes down the coil.

2. The coreless, structural blower barrel motor of claim 1, wherein a plurality of protrusions are uniformly arranged on the outer circumference of the positioning rubber sleeve, and a coil slot for mounting the coil is formed between two adjacent protrusions.

3. The coreless, blow cylinder motor of claim 2, wherein the coil slots are of a fan-shaped configuration.

4. The coreless, blow cylinder motor of claim 3, wherein fan-shaped bosses corresponding to the coil slots are evenly arranged on a side of the coil platen adjacent to the coils.

5. The air blowing cylinder motor with the hollow cup structure according to claim 4, wherein the stator core and the coil pressing plate are mounted on the casing through screws, a plurality of grooves for the screws to penetrate through are axially formed in the periphery of the stator core, and a plurality of through holes for the screws to penetrate through are formed in the periphery of the coil pressing plate.

6. The air blowing tube motor with the hollow cup structure according to any one of claims 1 to 5, further comprising a motor end cover, wherein a bearing chamber for mounting a bearing is arranged in or outside the motor end cover, in or outside the machine shell, a bearing sleeve is arranged in the bearing chamber, the bearing sleeve is sleeved outside the bearing, the rotor comprises a rotating shaft, and two ends of the rotating shaft are respectively arranged in the bearing in a penetrating manner; the motor end cover is provided with a spigot, the top of the shell is provided with a spigot position matched with the spigot, and the top of the shell is provided with a spigot step structure to form a spigot position for mounting the motor cover; the bearing sleeve is made of one of rubber, silica gel or plastic.

7. The air blowing cylinder motor with the hollow cup structure as claimed in claim 6, wherein a magnetic ring is disposed in the middle of the rotating shaft, a metal ring for pre-compressing the bearing is disposed between two ends of the magnetic ring and the bearing, and the metal ring is made of one of copper, iron or aluminum alloy.

8. The coreless-structure blower barrel motor according to claim 6, further comprising magnesium alloy blades connected to an output end of the rotating shaft, wherein the rotating shaft penetrates through the casing to be connected with the magnesium alloy blades, and the number of the magnesium alloy blades is 11 or 13.

9. The coreless blowing cylinder motor of claim 8, wherein an air duct is provided at a front end of the housing, the air duct and the housing are integrally formed, and the air duct is made of zinc alloy, aluminum alloy or plastic material.

10. The coreless, structural blower barrel motor of claim 1, wherein at least two spaced apart, arcuate locating plates are provided in the housing, the at least two spaced apart, arcuate locating plates forming a semi-enclosed structure for radially locating the stator core.