CN209472452U - It is a kind of for making the magnetic conduction sheet of brushless electric motor rotor core - Google Patents
It is a kind of for making the magnetic conduction sheet of brushless electric motor rotor core Download PDFInfo
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- CN209472452U CN209472452U CN201920231813.XU CN201920231813U CN209472452U CN 209472452 U CN209472452 U CN 209472452U CN 201920231813 U CN201920231813 U CN 201920231813U CN 209472452 U CN209472452 U CN 209472452U
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- rotor core
- conduction sheet
- magnetic conduction
- slot
- rotation axis
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Abstract
The utility model discloses a kind of for making the magnetic conduction sheet of brushless electric motor rotor core, belong to technical field of motors, after raising in the presence of the temperature at rotor, the adhesiveness of glue between iron core and rotation axis declines, to not can guarantee the compactness between rotor core and rotation axis, motor performance is caused to decline technical problem, its key points of the technical solution are that including rotation axis, the rotor core with magnet is arranged in the circumferential direction of rotation axis, rotor core includes the magnetic conduction sheet that several offer connecting hole, magnetic conduction sheet overlaps to form rotor core, rotor core is wrapped with fixed film, fixation kit is equipped between the rotor core and rotation axis, fixation kit includes the limiting slot opened up on the rotating shaft and the limited block being fixedly connected on connecting hole, interference channel between limited block and magnetic conduction sheet, achieve the effect that the compactness for improving rotor core and rotation axis cooperation.
Description
Technical field
It is the utility model relates to a kind of motor field, in particular to a kind of for making the magnetic conduction of brushless electric motor rotor core
Piece.
Background technique
Brushless motor has the characteristics that low loss, long service life, controllability are strong compared to carbon brush electric motor, is usually applied to
Control requires relatively high, and in the higher equipment of rotating ratio, such as model plane, precision instrumentation etc. is stringent to motor speed control, turns
Speed reaches in very high equipment.
The position of the main driving functions of conventional brushless motor is usually stator and the rotor with rotation axis；Stator is
Multipole winding；Rotor is rotation axis, and gluing to stick by glue in the peripheral outer wall of rotation axis has the rotor core with magnet, rotor core
It is made of multiple identical thin slice overlappings, accumulation.Brushless motor at work, by the magneticaction between stator and rotor,
Rotation axis is driven to be rotated.
But in the actual use process, after temperature at rotor increases, glue between iron core and rotation axis
Adhesiveness decline, to not can guarantee the compactness between rotor core and rotation axis, causes motor performance to decline.
Utility model content
In view of the deficienciess of the prior art, the purpose of the utility model is to provide one kind for making brushless electric motor rotor
The magnetic conduction sheet of core achievees the effect that the tight type for improving rotor core and rotation axis.
The above-mentioned technical purpose of the utility model has the technical scheme that
It is a kind of for making the magnetic conduction sheet of brushless electric motor rotor core, including rotation axis, be arranged and have in the circumferential direction of rotation axis
The rotor core of magnet, rotor core include the magnetic conduction sheet that several offer connecting hole, and magnetic conduction sheet overlaps to form rotor core, rotor core
It is wrapped with fixed film, fixation kit is equipped between the rotor core and rotation axis, fixation kit includes opening up on the rotating shaft
Limiting slot and the limited block that is fixedly connected on connecting hole, interference channel between limited block and magnetic conduction sheet.
Turned after rotation axis opens up rotation under the action of the magnetic force of rotor core and stator attracts by above-mentioned technical side
The limiting slot opened up on moving axis carries out effect of contraction to limited block, is consistent the revolving speed of rotor core and rotation axis, rotor core
Outside package fixation film can, keep compact abutting to be formed the magnetic conduction sheet for forming rotor core, to reduce magnetic conduction sheet
There is loose situation to generate, improves stability when rotor core uses；Compared to the previous fixation side using glue bonding
For formula, this form being used cooperatively using fixation kit and fixed film can guarantee that rotor core is synchronous with rotation axis and turn
Speed, and can guarantee the form stable of rotor core, it ensure that the fixed form of rotor core and rotation axis in terms of two, to improve
Compactness between rotating core and rotation axis achievees the effect that the compactness for improving rotor core and rotation axis cooperation.
Preferably, the magnetic conduction sheet includes Antaciron material.
Through the above technical solutions, Antaciron has preferable magnetic conductivity, so as to improve the work effect of rotor core
Rate reduces the loss of rotor core, so that the service life of Extending Rotor core, reduces the frequency of replacement rotor core, to improve
Cost performance when rotor uses.
Preferably, opening up on the connecting hole, there are two asymmetric indicator holes.
Through the above technical solutions, asymmetric indicator hole can correctly at instruction magnetic conduction sheet rotation situation, from
And when there is work problem using rotor made of this magnetic conduction sheet, indicator hole can correctly reflect the rotation shape of rotor
State reduces the time that worker judges rotor rotation situation, provides for the maintenance of worker so as to provide repair prompt for worker
Convenience.
Preferably, the indicator hole one is semicircle；Another is rectangle.
Through the above technical solutions, improving the identification of indicator hole since rectangle and semicircular shape difference are away from larger
Degree further improves the property easy to use of indicator hole.
Preferably, offering several card magnetic slot groups on the magnetic conduction sheet, card magnetic slot group is circumferentially distributed in magnetic conduction sheet
Edge.
Through the above technical solutions, the card magnetic slot group opened up on each magnetic conduction sheet, then can form on rotor core and run through
Card magnetic slot group, a complete magnet can be plugged on rotor core in this way, to reduce the small volume due to magnet
And the case where falling off during rotor rotation generation, to improve the practicability of magnet；Secondly, having magnetic on magnet
Power, the effect attracted each other before increasing magnetic conduction sheet, so that the case where magnetic conduction sheet is scattered is reduced, it is further to improve
The compactness that is connected between rotor core and rotation axis.
Preferably, the card magnetic slot group includes the first trapezoidal card magnetic slot of groove body, the second card magnetic slot and third card magnetic slot,
First card magnetic slot, the second card magnetic slot and third card magnetic slot are arranged in isosceles triangle.
Through the above technical solutions, the first card magnetic slot, the second card magnetic slot and the third card magnetic slot for grafting magnet are in ladder
Shape, when the rotor, the magnet being plugged on rotor core are affected by centrifugal force, it may appear that sliding, trapezoidal slot
Type provides the space of sliding for magnet, to reduce magnet, by after centrifugal force, there is a situation where hard contacts with magnetic conduction sheet
It generates, so that the situation for reducing magnet breakage occurs, improves the protection for magnet.
Preferably, the first card magnetic slot, the second card magnetic slot and third card magnetic slot offer on the inner wall of connecting hole
The auxiliary tank of perforation, auxiliary tank connect corresponding first card magnetic slot, the second card magnetic slot and third card magnetic slot.
Through the above technical solutions, the setting of auxiliary tank increases the width of groove body, buffering further is provided for magnet, is subtracted
Few magnet generates damaged situation because of being subject to centrifugal forces and occurs, and improves the protective effect for magnet.
Preferably, the card magnetic slot group and auxiliary tank are equipped with rounding corner structure.
Through the above technical solutions, the setting of rounded corner, reduces magnet and the first card magnetic slot, the second card magnetic slot and third
The damaged situation that card magnetic slot generates when contacting, to further improve the protective effect for magnet.
Preferably, offer several material reducing holes on the magnetic conduction sheet, material reducing hole be located at card magnetic slot be with connecting hole it
Between, circumferentially shape is uniformly distributed in material reducing hole.
Through the above technical solutions, the setting of material reducing slot reduces the material used when magnetic conduction sheet production, reduce magnetic conduction
The cost of piece improves the cost performance of magnetic conduction sheet；Secondly as the setting of material reducing slot reduces the quality on magnetic conduction sheet, thus
Reduce inertia of the magnetic conduction sheet in rotation, to make magnetic conduction sheet in rotation with more stability.
Preferably, the fixed film includes polyethylene material.
Through the above technical solutions, since polyethylene material has certain toughness, after being wrapped on rotor core, Neng Goutong
It crosses the toughness of material itself and provides pressure towards rotation axis for rotor core, to further improve rotor core and rotation axis
Compactness.
In conclusion the utility model has the following beneficial effects:
1, limiting slot and being used cooperatively for limited block achieve the effect that improve the compactness that rotor core cooperates with rotation axis；
2, card magnetic slot group and fixed film further improve the compactness of rotor core and rotation axis cooperation；
3, indicator hole and auxiliary tank improve the practicability of magnetic conduction sheet.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for making the magnetic conduction sheet of brushless electric motor rotor core；
Fig. 2 is the enlarged drawing of structure at A in Fig. 1；
Fig. 3 is the structural schematic diagram of single magnetic conduction sheet.
In figure, 1, rotation axis；2, rotor core；21, magnetic conduction sheet；22, connecting hole；221, indicator hole；23, material reducing hole；3, solid
Determine film；4, magnet；5, fixation kit；51, limiting slot；52, limited block；6, card magnetic slot group；61, the first card magnetic slot；62, the second card
Magnetic slot；63, third card magnetic slot；64, auxiliary tank.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.The wherein identical attached drawing of identical components
Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to
It is the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements geometry
The direction at center.
It is a kind of for making the magnetic conduction sheet of brushless electric motor rotor core, as shown in Figure 1, include round-shaped rotation axis 1, rotation
Axis 1 is equipped with the circular rotor core 2 with several magnets 4, and rotor core 2 includes the identical circle of several ferrosilicon materials
Magnetic conduction sheet 21, the center point of magnetic conduction sheet 21 offer circular connecting hole 22, and rotor core 2 is set in rotation axis by connecting hole 22
On 1；The fixation film 3 of polyethylene material is enclosed on the outside of rotor core 2；Fixation kit 5 is equipped between rotor core 2 and rotation axis 1.
In conjunction with Fig. 2, fixation kit 5 includes two limiting slots 51 being provided in rotation axis 1, and limiting slot 51 is about rotation axis
The section of 1 axisymmetrical, limiting slot 51 is rectangle, and the groove body length of limiting slot 51 is equal with the thickness of rotor core 2, limit
Limited block 52 is connected in slot 51, limited block 52 is fixedly connected on the connecting hole 22 of magnetic conduction sheet 21, on several magnetic conduction sheets 21
Limited block 52 limiting slot 51 is filled it is full；The interference there are four arc-shaped is opened up on the position of the connection magnetic conduction sheet 21 of magnetic conduction sheet 21
Slot, interference channel two are distributed in the two sides of two limited blocks 52 for one group.
In conjunction with Fig. 3, several card magnetic slot groups 6 are offered on magnetic conduction sheet 21, circumferentially shape is distributed in magnetic conduction sheet to card magnetic slot group 6
21 edge, card magnetic slot group 6 include trapezoidal the first card magnetic slot 61 with rounding corner structure, the second card magnetic slot 62 and third
Card magnetic slot 63, the first card magnetic slot 61, the second card magnetic slot 62 and third card magnetic slot 63 constitute isosceles triangle shape；Wherein, the first card
Magnetic slot 61, the second card magnetic slot 62 and third card magnetic slot 63 offer the auxiliary tank 64 of perforation on the cell wall of connecting hole 22, auxiliary
The axis of slot 64 is helped to be rectangle, auxiliary tank 64 is communicated to corresponding first card magnetic slot 61, the second card magnetic slot 62 and third card magnetic
In slot 63；The magnet 4 of rectangular-shape is inserted into several card magnetic slot groups 6.
Several material reducing holes 23 of triangle are offered on magnetic conduction sheet 21, material reducing hole 23 is located at connecting hole 22 and card magnetic slot group
Between 6, material reducing slot circumferentially shape array on the circumferencial direction of connecting hole 22；The finger being asymmetrical in shape is offered on connecting hole 22
Show hole 221, one of indicator hole 221 is semicircle, another is rectangle.
Wherein, when rotor core 2 works, rotor core 2 drives rotation axis 1 to rotate, and rotation axis 1 is in rotation, limiting slot 51
Effect of contraction is provided to limited block 52, while limited block 52 applies pressure to limiting slot 51, improves the rotation potential energy of rotation axis 1；
It is used cooperatively by limiting slot 51 and limited block 52, the velocity of rotation for being consistent rotation axis 1 and rotor core 2；And turning
During sub- core 2 rotates, the fixing layer in 2 outside of rotor core banding on the direction of rotation axis 1 by several magnetic conduction sheets 21 is mentioned
The tightness degree of high limited block 52 and the cooperation of limiting slot 51, to improve the tight of rotor core 2 and the cooperation before rotation axis 1
Close degree, and be provided on the arc surface of rotation axis 1 due to limiting slot 51, the interference channel of random arc-shaped can be improved limit
Using effect after block 52 and the cooperation of limiting slot 51, the further close journey for keeping cooperating between rotor core 2 and rotation axis 1
Degree.To sum up, through the above scheme, achieve the effect that the compactness for improving rotor core and rotation axis cooperation.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (10)
1. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core, including rotation axis (1), in the circumferential direction of rotation axis (1)
It is arranged the rotor core (2) with magnet (4), rotor core (2) includes the magnetic conduction sheet (21) that several offer connecting hole (22), is led
Magnetic sheet (21) overlaps to form rotor core (2), and rotor core (2) is wrapped with fixed film (3), it is characterised in that: the rotor core (2)
Be equipped with fixation kit (5) between rotation axis (1), fixation kit (5) include the limiting slot (51) that is provided on rotation axis (1) and
The limited block (52) being fixedly connected on connecting hole (22), interference channel between limited block (52) and magnetic conduction sheet (21).
2. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core according to claim 1, it is characterised in that: institute
Stating magnetic conduction sheet (21) includes Antaciron material.
3. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core according to claim 1, it is characterised in that: institute
It states there are two being opened up on connecting hole (22) asymmetric indicator hole (221).
4. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core according to claim 3, it is characterised in that: institute
Indicator hole (221) one are stated as semicircle；Another is rectangle.
5. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core according to claim 1, it is characterised in that: institute
It states and offers several card magnetic slot groups (6) on magnetic conduction sheet (21), card magnetic slot group (6) is circumferentially distributed in the edge of magnetic conduction sheet (21)
Place.
6. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core according to claim 5, it is characterised in that: institute
Stating card magnetic slot group (6) includes the first trapezoidal card magnetic slot (61) of groove body, the second card magnetic slot (62) and third card magnetic slot (63), and
One card magnetic slot (61), the second card magnetic slot (62) and third card magnetic slot (63) are arranged in isosceles triangle.
7. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core according to claim 6, it is characterised in that: institute
It states to offer on the inner wall of the first card magnetic slot (61), the second card magnetic slot (62) and third card magnetic slot (63) close connecting hole (22) and pass through
Logical auxiliary tank (64), auxiliary tank (64) connect corresponding first card magnetic slot (61), the second card magnetic slot (62) and third card magnetic
Slot (63).
8. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core according to claim 7, it is characterised in that: institute
It states card magnetic slot group (6) and auxiliary tank (64) is equipped with rounding corner structure.
9. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core according to claim 5, it is characterised in that: institute
State and offer several material reducing holes (23) on magnetic conduction sheet (21), material reducing hole (23) be located at card magnetic slot be with connecting hole (22) it
Between, material reducing hole (23) circumferentially shape is uniformly distributed.
10. a kind of magnetic conduction sheet (21) for making brushless electric motor rotor core according to claim 1, it is characterised in that:
The fixed film (3) includes polyethylene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920231813.XU CN209472452U (en) | 2019-02-23 | 2019-02-23 | It is a kind of for making the magnetic conduction sheet of brushless electric motor rotor core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920231813.XU CN209472452U (en) | 2019-02-23 | 2019-02-23 | It is a kind of for making the magnetic conduction sheet of brushless electric motor rotor core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209472452U true CN209472452U (en) | 2019-10-08 |
Family
ID=68093804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920231813.XU Active CN209472452U (en) | 2019-02-23 | 2019-02-23 | It is a kind of for making the magnetic conduction sheet of brushless electric motor rotor core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209472452U (en) |
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2019
- 2019-02-23 CN CN201920231813.XU patent/CN209472452U/en active Active
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