CN205647137U - Coreless motor - Google Patents
Coreless motor Download PDFInfo
- Publication number
- CN205647137U CN205647137U CN201620468514.4U CN201620468514U CN205647137U CN 205647137 U CN205647137 U CN 205647137U CN 201620468514 U CN201620468514 U CN 201620468514U CN 205647137 U CN205647137 U CN 205647137U
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- Prior art keywords
- axle sleeve
- casing
- magnetitum
- hollow
- cup motor
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Abstract
The utility model discloses a coreless motor, include: the outer axle sleeve of center pin, center pin, with shaft liner connection's magnetite and casing, its characterized in that, the casing combines the position to adopt laser welding fixed connection with the axle sleeve, the center pin be connected through bearing and axle sleeve, center pin and axle sleeve between have one or a plurality of bearings, axle sleeve and magnetite carry out the fixed bonding through the binder, combine the position to carry out laser welding to casing and axle sleeve and consolidate casing and axle sleeve, make its power of droing bigger with cooperation intensity, guarantee to fall back casing magnetite and does not take place the radial deflection.
Description
Technical field
This utility model belongs to electric motors, is specifically related to a kind of hollow-cup motor.
Background technology
Hollow-cup motor uses iron-core-free rotor, also referred to as drag cup rotor, mainly by center
Axle, lining, Magnet, coil and housing etc. form, need keep central shaft, lining, Magnet and
The stability of concentricity between coil and housing and lining, existing hollow-cup motor casing is tied
Structure is that axle sleeve carries out bonding with Magnetitum, and it carries out interference fit with casing again and produces, and ties at this
Under structure less with chassis contact area because of axle sleeve, the shadow of the magnetic pull strength of Magnetitum and casing self simultaneously
Cause casing holding capacity in fall-down test low under sound, often occur that motor falls back cabinet Magnetitum
Displacement causes concentricity to offset, thus affects performance and the life problems of motor, causes motor product
Quality is unstable.
Utility model content
A kind of hollow-cup motor that this utility model provides, by the knot by housing Yu axle sleeve junction
Close position and use the fixing connection of laser welding, housing is reinforced, improves the steady of electric machine structure
Qualitative so that it is resistance to falling is improved with resistance to falling property, substantially increases the quality of motor, solves actual answering
With hollow core cup motor casing structure be axle sleeve carry out with Magnetitum bonding after carry out interference with casing again and join
When symphysis is produced, because axle sleeve is less with chassis contact area, the magnetic at Magnetitum and casing self leads simultaneously
Cause casing holding capacity in fall-down test low under the influence of gravitation, often there is also motor and fall
The concentricity skew falling behind the displacement of casing Magnetitum and cause, thus affect asking of motor performance and life-span
Topic and the problem of motor product quality instability.
Described specifically, for the deficiencies in the prior art, this utility model provides following technology
Scheme:
A kind of hollow-cup motor, including central shaft, central shaft outside the magnetic that is connected with axle sleeve of axle sleeve
Stone and casing, it is characterised in that described axle sleeve and Magnetitum are contained in described casing, described casing
Use laser welding to fix with the bound site of axle sleeve junction to be connected.
Preferably, described central shaft is attached with axle sleeve by bearing.
Preferably, there is between described central shaft and axle sleeve one or more bearing.
Preferably, described axle sleeve is fixed bonding with Magnetitum by glue.
Preferably, described Magnetitum be Agglutinate neodymium-iron-boron, sintered NdFeB, strontium or Barium hexaferrite,
Aluminum nickel cobalt and/or SmCo magnetic.
Preferably, described Magnetitum is magnet ring or lamellar Magnetitum.
Preferably, described Magnetitum is externally provided with coil, and described coil is for being provided with a circle soft magnetic bodies.
Preferably, described soft magnetic bodies, is the soft magnetic bodies of ferrum or silicon steel material.
The beneficial effects of the utility model are: by above-mentioned the technical solution of the utility model, this reality
With the hollow-cup motor of novel offer, on original Process ba-sis, enhance joining of axle sleeve and casing
Close intensity, improve the peel force of axle sleeve and casing, not only increase the stability of electric machine structure,
Also improve it resistance to fall and resistance to falling property, ensure to fall back cabinet when falling and Magnetitum does not occur the most partially
Move, decrease the leakage field phenomenon between coil and Magnetitum, reduce magnetic force loss, increase the defeated of motor
Go out power, further improve the efficiency of motor, change hollow-cup motor also have simple in construction,
The features such as reasonable in design, simple operation and easily realization.
Accompanying drawing explanation
Fig. 1 is the structure chart of hollow-cup motor of the present utility model.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, below will
In conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is entered
Row clearly and completely describes, it is clear that described embodiment is that this utility model part is implemented
Example rather than whole embodiments.Generally herein described in accompanying drawing and this utility model of illustrating
The assembly of embodiment can be arranged with various different configurations and design.Therefore, below to attached
The detailed description of the embodiment of the present utility model provided in figure is not intended to limit claimed basis
The scope of utility model, but it is merely representative of selected embodiment of the present utility model.Based on this practicality
Embodiment in novel, those of ordinary skill in the art are institute under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of this utility model protection.
The hollow-cup motor structural representation that Fig. 1 provides for this utility model, including: central shaft 6,
Axle sleeve 3, Magnetitum 2 and casing 1, have one or more bearing 4 between central shaft 6 and axle sleeve,
Preferably, having two bearings 4 between central shaft 6 and axle sleeve, one of them bearing 4 is located close to
Casing 1 opening part, another bearing 4 be positioned at casing 1 inner chamber, relative casing 1 opening another
Near Duan, the junction of axle sleeve 3 and casing 1 to be exposed to the part outside casing 1 be bound site 5.
First, axle sleeve 3 and casing 1 carry out interference fit, make axle sleeve 3 high together with Magnetitum 2
In pressure press-in casing, then, casing 1 is knot with axle sleeve 3 junction exposed position outside
Close position 5, bound site 5 use the mode of laser welding casing 1 reinforced the connection with axle sleeve 3,
Thus improve the stability of electric machine structure so that it is resistance to falling is improved with resistance to falling property, and further carries
The efficiency of high motor and quality.
Axle sleeve 3 is fixed bonding with Magnetitum 2 by binding agent, it is preferable that can use quick-drying
Glue is as binding agent.
Magnetitum 2 material be Agglutinate neodymium-iron-boron, sintered NdFeB, strontium Barium hexaferrite, aluminum nickel cobalt and/
Or SmCo magnetic Magnetitum, it is preferable that Magnetitum 2 uses sintered NdFeB to make, and this material has height
The features such as magnetic energy product, high concordance, low weightlessness, excellent corrosion resistance and good close colloidality, it
Excitation magnetic kinetic potential can be provided to greatest extent, improve the efficiency of motor further.
Magnetitum 2 is magnet ring or lamellar Magnetitum, it is preferable that after using punching silicon-steel, folded riveting is formed
Circular composition.
Magnetitum 2 is externally provided with coil, and coil is externally provided with a circle soft magnetic bodies, and soft magnetic bodies is ferrum or silicon steel material
Material or the soft magnetic bodies of other materials, after adding soft magnetic bodies, it is possible to reduce between coil and Magnetitum 2
Leakage field phenomenon, it is possible to reduce magnetic force loss, increase motor output.
By drag cup structure described above, the installation step of hollow-cup motor of the present utility model
Specific as follows:
Step one: by binding agent, such as Instant cement, that with Magnetitum 2, axle sleeve 3 is carried out bonding formation is bonding
Body, to rotate a circle after being enclosed within axle sleeve 3 by Magnetitum 2, in order to adhesive coverage timely
Evenly；
Step 2: then by convered structure high pressure press-in casing 1；
Step 3: carry out interference fit in bearing 4 successively high pressure press-in axle sleeve 3 afterwards；
Step 4: last as it is shown in figure 1, the bound site 5 of casing 1 with axle sleeve 3 is carried out laser welding,
Casing 1 is reinforced so that it is peel force is with to coordinate intensity bigger, it is ensured that fall back cabinet Magnetitum not
There is radial deflection.
After this assembly technology, axle sleeve 3 is remarkably reinforced with the intensity that coordinates of casing 1, and it comes off
Power is original more than 2.5 times, is doing in fall-down test to it, present hollow-cup motor simultaneously
Casing doubles than the former resistance to drop number of technique casing and has a surplus, it can be seen that, this utility model carries
The hollow-cup motor of confession improves the stability of hollow-cup motor structure, resistance to fall further with resistance to falling property
Improve, improve efficiency and the quality of motor.
The foregoing is only this utility model preferred embodiment, be not used to limit to this utility model,
All amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, all
Within needing to be included in protection domain of the present utility model.
Claims (8)
1. a hollow-cup motor, the Magnetitum (2) being connected with axle sleeve (3) including central shaft (6), central shaft (6) axle sleeve (3) outward and casing (1), it is characterized in that, described axle sleeve (3) and Magnetitum (2) are contained in described casing (1), and described casing (1) is fixed be connected with axle sleeve (3) junction bound site (5) the employing laser welding in casing (1) outside.
Hollow-cup motor the most according to claim 1, it is characterised in that described central shaft (6) is attached with axle sleeve (3) by bearing (4).
Hollow-cup motor the most according to claim 2, it is characterised in that between described central shaft (6) and axle sleeve (3), there is one or more bearing (4).
Hollow-cup motor the most according to claim 1, it is characterised in that described axle sleeve (3) is fixed bonding with Magnetitum (2) by binding agent.
Hollow-cup motor the most according to claim 1, it is characterised in that described Magnetitum (2) is Agglutinate neodymium-iron-boron, sintered NdFeB, strontium Barium hexaferrite, aluminum nickel cobalt and/or SmCo magnetic.
Hollow-cup motor the most according to claim 1, it is characterised in that described Magnetitum (2) is magnet ring or lamellar Magnetitum.
Hollow-cup motor the most according to claim 1, it is characterised in that described Magnetitum (2) is externally provided with coil, described coil is for being provided with a circle soft magnetic bodies.
Hollow-cup motor the most according to claim 7, it is characterised in that described soft magnetic bodies, is the soft magnetic bodies of ferrum or silicon steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620468514.4U CN205647137U (en) | 2016-05-20 | 2016-05-20 | Coreless motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620468514.4U CN205647137U (en) | 2016-05-20 | 2016-05-20 | Coreless motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205647137U true CN205647137U (en) | 2016-10-12 |
Family
ID=57055119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620468514.4U Active CN205647137U (en) | 2016-05-20 | 2016-05-20 | Coreless motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205647137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800259A (en) * | 2017-11-28 | 2018-03-13 | 深圳市优必选科技有限公司 | Miniature coreless brush direct current motor and robot |
-
2016
- 2016-05-20 CN CN201620468514.4U patent/CN205647137U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800259A (en) * | 2017-11-28 | 2018-03-13 | 深圳市优必选科技有限公司 | Miniature coreless brush direct current motor and robot |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |