CN206302230U - Brushless DC motor and DC brushless motor and fan - Google Patents
Brushless DC motor and DC brushless motor and fan Download PDFInfo
- Publication number
- CN206302230U CN206302230U CN201621422700.0U CN201621422700U CN206302230U CN 206302230 U CN206302230 U CN 206302230U CN 201621422700 U CN201621422700 U CN 201621422700U CN 206302230 U CN206302230 U CN 206302230U
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- China
- Prior art keywords
- injection molding
- iron core
- molding body
- magnetic element
- brushless
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Abstract
The utility model is related to brushless DC motor and DC brushless motor and fan, including housing, rotor and stator, rotor includes multiple magnetic elements, iron core and injection molding body, multiple magnetic element annular spreads are in the inner side of iron core, it is characterized in that be fixed on iron core forming on injection molding body in injection by injection molding body, magnetic element is arranged on blend compounds hydropexis in the draw-in groove on the inside of injection molding body, its advantage is that iron core is solidificated on injection molding body by integrated injection molding, and magnetic element is to be arranged on blend compounds hydropexis in injection molding body one by one, when certain magnetic element because shake or collision and during fragmentation, can be replaced.Simultaneously because magnetic element is not influenceed by injection high temperature, it is to avoid its magnetic behavior is adversely affected.The utility model can ensure that the superperformance of DC brushless motor while production efficiency is taken into account, again.
Description
Technical field
The utility model is related to the motor that a kind of fan is used, more particularly to the DC brushless motor that a kind of fan is used.
Background technology
Fan electromotor is divided into alternating current generator, DC brushless motor and brush direct current motor.Such as ceiling fan, it includes housing, wind
Blade outside fan motor and housing.
DC brushless motor includes stator and rotor, rotor several magnetic elements and periphery including annular spread
Iron core, traditional has two ways：1st, it is fixed using glue mode between magnetic element and iron core, assembly process trouble,
Production time is long, inefficiency.2nd, magnetic element is fixed by the way of fixed support draw-in groove, this is to draw-in groove and magnetic
The precision requirement of element is higher.In order to solve the above-mentioned technical problem, have and working of plastics is formed by magnetic unit using Shooting Technique
Part and iron core are wrapped up, and improve the electrical property of rotor and production efficiency.But producing a new problem simultaneously is：1st, exist
In fan electromotor carrying or transportation, usually can cause the fragmentation of magnetic element because of vibrations or collision, this can cause motor
Cannot run or running in have a noise, and due to magnetic element by integrated injection molding in working of plastics, the magnetic element of fragmentation
Cannot change, cannot repair, increase cost.High temperature when the 2nd, being molded can cause magnetic element magnetic to decline, and substantially reduce motor
Efficiency, it is necessary to re-start completely demagnetization after magnetize again again.
The content of the invention
Technical problem to be solved in the utility model be to provide a kind of direct current for taking into account production efficiency and properties of product without
Brush motor rotor, the utility model further provide for a kind of DC brushless motor being made up of above-mentioned brushless DC motor with
And the fan of the DC brushless motor is installed.
The utility model solve the technical scheme that is used of above-mentioned technical problem for：Brushless DC motor, including it is many
Individual magnetic element, iron core and injection molding body, described multiple magnetic element annular spreads are in the inner side of iron core, it is characterised in that described
Injection molding body iron core forming is fixed on injection molding body in injection, the magnetic element is arranged on the inside of described injection molding body
Blend compounds hydropexis in draw-in groove.
The further preferred scheme of the utility model is：Between the lateral surface of described magnetic element and the medial surface of iron core
Fixed with glue.
The further preferred scheme of the utility model is：Described injection molding body has wrapped up in three bread of described iron core
Come, the medial surface of described iron core exposes to described injection molding body.
The further preferred scheme of the utility model is：The curved class rectangular shape of described magnetic element.
The further preferred scheme of the utility model is：Described draw-in groove is enclosed by two pieces of ribs being located on the inside of injection molding body
Into.
The further preferred scheme of the utility model is：The periphery of described injection molding body is provided with the support being connected with housing
Component.
DC brushless motor, including stator and rotor, it is characterised in that described rotor includes multiple magnetic elements, iron core
And injection molding body, described multiple magnetic element annular spreads are in the inner side of iron core, it is characterised in that described injection molding body is in injection
When iron core forming is fixed on injection molding body, the magnetic element is mounted and fixed in the draw-in groove on the inside of described injection molding body,
Described magnetic element is being brought into close contact in described iron core, or magnetic element is fixed in described iron core with allowable clearance
Side.
The further preferred scheme of the utility model is：Between the medial surface of described magnetic element and the medial surface of iron core
Fixed with glue.
The further preferred scheme of the utility model is：Described injection molding body has wrapped up in three bread of described iron core
Come, the medial surface of described iron core exposes to described injection molding body.
The further preferred scheme of the utility model is：Fan, including the DC brushless motor with said structure feature.
Compared with prior art, it is an advantage of the invention that iron core is solidificated on injection molding body by integrated injection molding, and magnetic
Element is to be arranged on blend compounds hydropexis in injection molding body one by one, when certain magnetic element because shake or collision and during fragmentation, can be with
Timely and conveniently changed, reduces cost.Simultaneously because magnetic element is not influenceed by the high temperature in Shooting Technique, it is to avoid its
Magnetic behavior is adversely affected, and reduces technique, cost-effective.The utility model prolongs while production raising efficiency is taken into account
Motor service life is grown, can ensure that DC brushless motor has good service behaviour again.
Brief description of the drawings
Fig. 1 is the side view of rotor of the invention；
Fig. 2 is the front view of rotor of the invention；
Fig. 3 is enlarged drawing at A in Fig. 2；
Fig. 4 is the exploded view () of rotor of the invention；
Fig. 5 is the exploded view (two) of rotor of the invention；
Fig. 6 is the structure chart of fan DC brushless motor of the invention；
Fig. 7 is the respective outer side edges figure of rotor of the invention and stator.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
As Figure 1-Figure 5, brushless DC motor, including multiple magnetic elements 1, iron core 2 and injection molding body 3 and cover plate
9, the shaping of iron core 2 is fixed on injection molding body 3 by the annular spread of multiple magnetic elements 1 in the inner side of iron core 2, injection molding body 3 in injection
On, be fixed on iron core forming on injection molding body in injection by injection molding body, and magnetic element is arranged in the draw-in groove 4 of the inner side of injection molding body 3
Blend compounds water 5 is fixed.Magnetic element 1 is being brought into close contact in iron core 2, or magnetic element 1 is fixed on iron core inner side with allowable clearance,
Not influence the interaction between iron core 2 and magnetic element 1 to be defined.Iron core is only molded in working of plastics by Shooting Technique
On, then magnetic element 1 is mounted and fixed on working of plastics by glue, injection molding body 3 makes between magnetic element 1 and iron core 2
Position relationship solidifies.Cover plate 9 is covered on injection molding body 3, and the sidepiece of magnetic element 1 is covered.
As shown in fig. 4-5, some magnetic elements 1 are uniformly distributed and are bonded in the iron core 2 with special glue, iron core 2
It is fixed in injection molding body 3；Iron core 2 uses closed loop self-shielded design, positioned at the outer wall of magnetic element 1, is tightly bonding with magnetic unit
Part 1, its effect is as follows：Closed loop self-shielded design can be significantly increased the magnetic flux density of air gap side, improve permanent-magnet material and utilize
Rate, making the power density of motor increases, so as to rotor weight can be reduced；Due to reduce rotor weight, motor turn
Dynamic inertia is also synchronously reduced, and improves motor fast-response, improves product efficiency.
In the motor high-strength adhesive rotor, injection molding body 3 is tightly combined with iron core 2, stable performance, and uniformity is good, and adds
Work efficiency high, saves the stator mould input of different motor external diameters.
In injection moulding process, iron core 2 is arranged on plastic mould core relevant position, then carries out mold-closing injection；Injection
After the completion of, injection molding body 3 is taken out in die sinking, then magnetic element is bonded on the iron core 2 of the headspace of injection molding body 3.This Shooting Technique
It is processed using polytype injection machine.
Iron core 2 is the iron hoop of closed loop, is positioned on the core rod of plastic mould, it is ensured that iron core 2 is close to injection molding body 3
Property.
Fixed with strength glue special 5 between the lateral surface 11 of magnetic element 1 and the medial surface 21 of iron core 2.Glue is coated in
The position to cement effect best.
Injection molding body 3 wraps three bread of iron core 2, and the medial surface of iron core 2 exposes to injection molding body 3.The inner side of iron core
Face is close to or is abutted with the lateral surface of magnetic element, and distance between the two can not be too big, not influence both magnetic behaviors.
The curved class rectangular shape of magnetic element 1.There is gap, all of magnetic between two neighboring magnetic element 1
Property element is constituting an annular magnetic gonosome.And the lateral surface of class rectangular structure is bonded in magnetic element special glue 5 completely
In iron core 2, medial surface exposes to the medial surface of injection molding body 3, forms the magnetic field of stabilization, it is ensured that the performance of rotor.
Magnetic element 1 is that, with two class rectangular structures of symmetrical arcwall face, and one of arcwall face exposes to note
The medial surface of plastomer 3.Magnetic element 1 with arc surface is fitted tightr with the injection molding body 3 of annular shape, is revolved at a high speed in rotor
During turning, both will not also be susceptible to separate；Ensure the stability of properties of product.
Draw-in groove 4 is surrounded by two pieces of ribs 31 for being located at the inner side of injection molding body 3.Two pieces of ribs are limiting the transverse direction of magnetic element 1
It is mobile, play a part of positioning.The width of rib that is to say the spacing of adjacent two pieces of magnetic elements.
The periphery of injection molding body 3 is provided with the bracket component 32 being connected with housing, and described bracket component 32 includes multiple branch
Frame 321.Bracket component is mainly used in connecting rotor and shell, and rotor is fixed up with shell.When the rotor is turning, its
Shell also follows rotation.Bracket component also injection moulding, its size is changed according to the size of shell, only once changes mould
Tool is it is achieved that its production cost is relatively inexpensive.The support 321 is hollow trough body structure.Groove body portion is just
In the installation that rotor passes through support 321, while also mitigating the weight of rotor.
The end face of support 321 is higher by the end face of the injection molding body 3.Avoid injection molding body 3 adjacent with other in high-speed rotation
The friction of near-end part, extends its service life.
The bottom of support 321 is fixedly connected with the injection molding body 3 by fillet.Connected by fillet, both enhancings connection
When stability, when being particularly ensured that rotor rotates at a high speed, it is to avoid it is hidden that support 321 departs from the safety that injection molding body 3 may bring
Suffer from.
As shown in Figure 6 and Figure 7, a kind of fan, such as ceiling fan, it includes housing 6, is installed on the brush DC electricity in housing 6
Blade outside machine, and housing 6, DC brushless motor includes stator 7 and rotor 8, and stator 7 includes fixing axle 71, bearing, silicon steel
Piece 72, coil holder 73, enamel-covered wire etc., rotor 8 include multiple magnetic elements 1, iron core 2 and injection molding body 3, the annular of multiple magnetic elements 1
The inner side of iron core 2 is distributed in, be fixed on the shaping of iron core 2 on injection molding body 3 in injection by injection molding body 3, and magnetic element 1 is installed and solid
It is scheduled in the draw-in groove 4 of the inner side of injection molding body 3, magnetic element 1 is being brought into close contact in iron core 2, or magnetic element 1 is fixed with allowable clearance
In iron core inner side.Fixed with glue 5 between the lateral surface 11 of magnetic element 1 and the medial surface 21 of iron core 2.Injection molding body 3 is by iron core 2
Three bread wrap, the medial surface of iron core 2 exposes to injection molding body 3.
Detailed Jie has been carried out to brushless DC motor provided by the present invention, DC brushless motor and fan above
Continue, specific case used herein is set forth to principle of the invention and implementation method, the explanation of above example is only
It is to be used to help the reason present invention and core concept.It should be pointed out that for those skilled in the art, not taking off
On the premise of the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this
In invention scope of the claims.
Claims (10)
1. brushless DC motor, including multiple magnetic elements, iron core and injection molding body, described multiple magnetic elements annular point
It is distributed in the inner side of iron core, it is characterised in that be fixed on iron core forming on injection molding body in injection by described injection molding body, the magnetic
Property element be arranged on blend compounds hydropexis in the draw-in groove on the inside of described injection molding body.
2. brushless DC motor according to claim 1, it is characterised in that the lateral surface of described magnetic element with
Fixed with glue between the medial surface of iron core.
3. brushless DC motor according to claim 1, it is characterised in that described injection molding body is by described iron core
Three bread wrap, the medial surface of described iron core exposes to described injection molding body.
4. brushless DC motor according to claim 1, it is characterised in that the curved class of described magnetic element
Rectangular shape.
5. brushless DC motor according to claim 1, it is characterised in that described draw-in groove is located at injection by two pieces
The rib of internal side is surrounded.
6. brushless DC motor according to claim 1, it is characterised in that the periphery of described injection molding body is provided with
The bracket component being connected with housing.
7. DC brushless motor, including stator and rotor, it is characterised in that described rotor include multiple magnetic elements, iron core and
Injection molding body, described multiple magnetic element annular spreads are in the inner side of iron core, it is characterised in that described injection molding body is in injection
Iron core forming is fixed on injection molding body, the magnetic element is mounted and fixed in the draw-in groove on the inside of described injection molding body, institute
The magnetic element stated is being brought into close contact in described iron core, or magnetic element is fixed on described iron core inner side with allowable clearance.
8. DC brushless motor according to claim 7, it is characterised in that the medial surface and iron core of described magnetic element
Medial surface between fixed with glue.
9. DC brushless motor according to claim 7, it is characterised in that described injection molding body is by the three of described iron core
Individual bread wraps, and the medial surface of described iron core exposes to described injection molding body.
10. fan, is characterised by including thering is any described DC brushless motors of claim 7-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621422700.0U CN206302230U (en) | 2016-12-23 | 2016-12-23 | Brushless DC motor and DC brushless motor and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621422700.0U CN206302230U (en) | 2016-12-23 | 2016-12-23 | Brushless DC motor and DC brushless motor and fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206302230U true CN206302230U (en) | 2017-07-04 |
Family
ID=59204617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621422700.0U Expired - Fee Related CN206302230U (en) | 2016-12-23 | 2016-12-23 | Brushless DC motor and DC brushless motor and fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206302230U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602831A (en) * | 2017-02-10 | 2017-04-26 | 许立新 | DC brushless motor rotor, DC brushless motor and fan |
| CN108711970A (en) * | 2018-08-08 | 2018-10-26 | 江门市邦特电子电器有限公司 | A kind of outward rotation type ceiling-fan motor rotor |
-
2016
- 2016-12-23 CN CN201621422700.0U patent/CN206302230U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602831A (en) * | 2017-02-10 | 2017-04-26 | 许立新 | DC brushless motor rotor, DC brushless motor and fan |
| CN108711970A (en) * | 2018-08-08 | 2018-10-26 | 江门市邦特电子电器有限公司 | A kind of outward rotation type ceiling-fan motor rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170704 Termination date: 20211223 |