CN219960264U - Miniature motor with protector - Google Patents
Miniature motor with protector Download PDFInfo
- Publication number
- CN219960264U CN219960264U CN202321699498.6U CN202321699498U CN219960264U CN 219960264 U CN219960264 U CN 219960264U CN 202321699498 U CN202321699498 U CN 202321699498U CN 219960264 U CN219960264 U CN 219960264U
- Authority
- CN
- China
- Prior art keywords
- end cover
- shell
- shielding layer
- opening
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001012 protector Effects 0.000 title description 5
- 230000005291 magnetic effect Effects 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005294 ferromagnetic effect Effects 0.000 abstract description 4
- 239000012188 paraffin wax Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model relates to a miniature motor with a protection device, comprising: the shell is provided with an opening I at one end, and the shell wall of the shell double-layer structure is communicated with the opening I to form a placing cavity; the first end cover is covered with the first opening, and the first end cover is in sealing fit with the placing cavity to form a sealing cavity for placing the magnetic shielding layer. In the utility model, the shell wall of the shell is changed into a double-layer structure, when the first end cover is matched with the shell, the first end cover is matched with the placing cavity in a sealing way to form a sealing cavity for placing the magnetic shielding layer, and the magnetic shielding layer blocks the interference of an external magnetic field on the magnetic field generated by the stator to ensure the stable rotating speed of the miniature motor. The magnetic shielding layer adopts magnetic liquid as the magnetic shielding layer, such as fine ferromagnetic particles suspended in paraffin. The magnetic shielding layer can absorb the external interference magnetic field to the stator, adopts the liquid shielding layer can also fully fill sealed cavity to the radiating effect is also better.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a miniature motor with a protection device.
Background
Miniature motors are generally referred to as smaller size motors, and also produce a magnetic field by energizing a stator to drive a rotor about a shaft.
Because of the small size of the stator, the strength of the magnetic field generated after the opposite energization is relatively weak. In the region of strong magnetic field interference or frequent magnetic field change, the miniature motor is extremely easy to be interfered by the magnetic field to generate rotation speed fluctuation, thereby influencing the stability of kinetic energy transmission.
Based on the above, it is necessary to design a micro motor with good magnetic field anti-interference performance.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model provides a miniature motor with a protection device, which has the following specific technical scheme:
from miniature motor of taking protection device includes:
the shell is provided with an opening I at one end, and the shell wall of the shell double-layer structure is communicated with the opening I to form a placing cavity;
the first end cover is covered with the first opening, and the first end cover is in sealing fit with the placing cavity to form a sealing cavity for placing the magnetic shielding layer.
Conventional magnetic shielding structures are difficult to add to a miniature motor due to the small size of the miniature motor itself. In this scheme, will the shell wall of casing changes bilayer structure into behind end cover and the casing cooperation, end cover one with place the chamber sealing fit, constitute and place the sealed cavity of magnetic shielding layer, the interference of magnetic shielding layer then separation external magnetic field to the magnetic field that the stator produced ensures that micro motor rotational speed is stable. Wherein, the magnetic shielding layer adopts magnetic liquid as the magnetic shielding layer, such as fine ferromagnetic particles suspended in paraffin. The magnetic shielding layer can absorb the external interference magnetic field to the stator, adopts the liquid shielding layer can also fully fill sealed cavity to the radiating effect is also better.
As an improvement of the technical scheme, the other end of the shell is provided with a second opening, and the second opening is provided with a second end cover which is covered with the second opening.
The housing may also be of a two-end opening configuration to facilitate assembly of the stator and rotor. When the shell adopts a structure with two opening ends, the opening II is also covered with the corresponding end cover II.
As an improvement of the technical scheme, the shell is internally provided with a rotor, and the rotating shafts on the rotor are in running fit with the bearing sleeves on the first end cover and the second end cover.
The rotating shaft penetrates through the first end cover and the second end cover and is in rotary connection with the corresponding first end cover and the corresponding second end cover through the bearing sleeve, so that rotation of the rotating shaft is ensured. Meanwhile, the first end cover and the second end cover are matched with the shell, and limit of the rotor is achieved.
As an improvement of the technical scheme, the sealing element is arranged on the inner wall of the first end cover, and when the first end cover is covered with the first opening, the sealing element stretches into the placing cavity.
The sealing element is a sealing rubber ring, and when the sealing element is plugged into the placing cavity, the sealing performance can be further improved. The magnetic shielding layer injected into the sealing cavity can not leak, and is effective for a long time.
As an improvement of the technical scheme, the shell is detachably and fixedly connected with the first end cover.
If the shell and the first end cover are connected by screws, the first end cover can be disassembled, maintained and assembled conveniently.
The utility model has the beneficial effects that:
1. in the utility model, the shell wall of the shell is changed into a double-layer structure, when the first end cover is matched with the shell, the first end cover is matched with the placing cavity in a sealing way to form a sealing cavity for placing the magnetic shielding layer, and the magnetic shielding layer blocks the interference of an external magnetic field on the magnetic field generated by the stator to ensure the stable rotating speed of the miniature motor.
2. In the present utility model, a magnetic liquid is used as the magnetic shield layer, such as fine ferromagnetic particles suspended in paraffin. The magnetic shielding layer can absorb the external interference magnetic field to the stator, adopts the liquid shielding layer can also fully fill sealed cavity to the radiating effect is also better.
Drawings
FIG. 1 is an end view of a miniature motor with a self-contained protection device;
FIG. 2 is a cross-sectional view at A-A in FIG. 1;
FIG. 3 is a side view of a miniature motor with a self-contained protection device;
fig. 4 is a perspective view of a miniature motor with its own protector.
Reference numerals: 10. a housing; 11. an opening I; 12. a placement cavity; 13. an opening II; 20. an end cover I; 21. a seal; 30. an end cover II; 40. a rotor; 41. a rotating shaft; 42. and a bearing sleeve.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1-4, wherein fig. 1 is an end view of a miniature motor with its own protector; FIG. 2 is a cross-sectional view at A-A in FIG. 1; FIG. 3 is a side view of a miniature motor with a self-contained protection device; fig. 4 is a perspective view of a miniature motor with its own protector.
From miniature motor of taking protection device includes:
the shell 10, one end of the shell 10 is provided with an opening I11, and the shell wall of the double-layer structure of the shell 10 is communicated with the opening I11 to form a placing cavity 12;
the first end cover 20 is covered with the first opening 11, and the first end cover 20 and the placing cavity 12 are matched in a sealing way to form a sealing cavity for placing the magnetic shielding layer.
In particular, conventional magnetic shielding structures are difficult to add to a micro-motor due to the small size of the micro-motor itself. In this scheme, change the shell wall of casing 10 into bilayer structure, after end cover one 20 and casing 10 cooperate, end cover one 20 and place chamber 12 sealing fit, constitute and place the sealed cavity of magnetic shielding layer, the interference of magnetic field that the magnetic shielding layer then separation external magnetic field produced the stator, ensure micro motor rotational speed stability. Wherein, the magnetic shielding layer adopts magnetic liquid as the magnetic shielding layer, such as fine ferromagnetic particles suspended in paraffin. The magnetic shielding layer can absorb the external interference magnetic field to the stator, adopts the liquid shielding layer can also fully fill sealed cavity to the radiating effect is also better.
Referring to fig. 2, in one embodiment, the other end of the housing 10 has a second opening 13, and the second opening 13 has a second end cap 30 that covers the second opening.
Specifically, the housing 10 may also be configured to have an opening at both ends to facilitate assembly of the stator and the rotor 40. When the shell 10 adopts a structure with two open ends, the second opening 13 is also covered with the second corresponding end cover 30.
Referring to fig. 2, in one embodiment, the housing 10 has a rotor 40 therein, and a shaft 41 on the rotor 40 is in rotational engagement with a bearing housing 42 on the first end cap 20 and the second end cap 30.
Specifically, the rotating shaft 41 passes through the first end cover 20 and the second end cover 30, and is rotatably connected with the corresponding first end cover 20 and second end cover 30 through the bearing sleeve 42, so as to ensure the rotation of the rotating shaft 41. Meanwhile, the first end cover 20 and the second end cover 30 are matched with the shell 10, and limit of the rotor 40 is achieved.
Referring to fig. 2, in one embodiment, the inner wall of the first end cap 20 has a seal 21 thereon, and the seal 21 extends into the placement cavity 12 when the first end cap 20 is closed over the first opening 11.
Specifically, the sealing member 21 is a sealing rubber ring, and when the sealing member 21 is plugged into the placement cavity 12, further improvement of sealing performance can be ensured. The magnetic shielding layer injected into the sealing cavity can not leak, and is effective for a long time.
Referring to fig. 4, in one embodiment, the housing 10 is removably fixedly connected to the first end cap 20.
For example, the shell 10 and the first end cover 20 are connected by screws, so as to facilitate the disassembly, maintenance and assembly of the first end cover 20.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (5)
1. From miniature motor of taking protection device, its characterized in that includes:
the shell comprises a shell body (10), wherein one end of the shell body (10) is provided with an opening I (11), and the shell wall of the shell body (10) with a double-layer structure is communicated with the opening I (11) to form a placing cavity (12);
and the end cover I (20) is covered with the opening I (11), and the end cover I (20) and the placing cavity (12) are in sealing fit to form a sealing cavity for placing the magnetic shielding layer.
2. The self-contained protection device micro-machine of claim 1, wherein:
the other end of the shell (10) is provided with a second opening (13), and the second opening (13) is provided with a second end cover (30) which is covered with the second opening.
3. The self-contained protection device micro-machine of claim 2, wherein:
the shell (10) is internally provided with a rotor (40), and rotating shafts (41) on the rotor (40) are in running fit with bearing sleeves (42) on the first end cover (20) and the second end cover (30).
4. The self-contained protection device micro-machine of claim 1, wherein:
the inner wall of the first end cover (20) is provided with a sealing piece (21), and when the first end cover (20) is covered with the first opening (11), the sealing piece (21) stretches into the placing cavity (12).
5. The self-contained protection device micro-machine of claim 1, wherein:
the shell (10) is detachably and fixedly connected with the first end cover (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321699498.6U CN219960264U (en) | 2023-06-30 | 2023-06-30 | Miniature motor with protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321699498.6U CN219960264U (en) | 2023-06-30 | 2023-06-30 | Miniature motor with protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219960264U true CN219960264U (en) | 2023-11-03 |
Family
ID=88539674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321699498.6U Active CN219960264U (en) | 2023-06-30 | 2023-06-30 | Miniature motor with protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219960264U (en) |
-
2023
- 2023-06-30 CN CN202321699498.6U patent/CN219960264U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |