CN214674569U - Plastic package stator for DC outer rotor motor - Google Patents
Plastic package stator for DC outer rotor motor Download PDFInfo
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- CN214674569U CN214674569U CN202120831399.3U CN202120831399U CN214674569U CN 214674569 U CN214674569 U CN 214674569U CN 202120831399 U CN202120831399 U CN 202120831399U CN 214674569 U CN214674569 U CN 214674569U
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- plastic package
- direct current
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Abstract
The utility model discloses a plastic envelope stator for direct current external rotor electric machine, it relates to the external rotor electric machine field, its main part sets up to stator module, integrated into one piece has the plastic envelope spare outside stator module, form the plastic envelope stator, the plastic envelope spare is provided with the through-hole that runs through in the plastic envelope spare along its central axis, the through-hole on the plastic envelope stator, be used for with the pivot cooperation, and set up the bearing room respectively and dodge the groove at the through-hole both ends, wherein, place the bearing in the bearing room, dodge groove and rotor subassembly cooperation, single-ended sets up bearing and pivot cooperation, combine to dodge groove and bearing room, make this plastic envelope stator and pivot, the cooperation of rotor subassembly is more accurate.
Description
Technical Field
The utility model relates to an external rotor electric machine field, in particular to a plastic envelope stator for direct current external rotor electric machine.
Background
The motor is one of the necessary components of various electromechanical products, wherein the outer rotor motor has the advantages of compact structure and high material utilization rate, and is widely applied to the fields of exhaust equipment, air conditioning units, air purification systems and cooling equipment and household appliances such as bath heaters, fans, heaters, dehumidifiers and the like.
The existing outer rotor motor comprises a shell, a rotor and a plastic package stator, wherein the rotor and the plastic package stator are arranged in the shell. The plastic package stator is provided with a through hole which is in plug-in fit with the rotating shaft, in the prior art, the end cover with the bearing chamber and the shaft sleeve with the bearing chamber are respectively pressed into the through hole from two sides to realize the positioning and the assembly of the rotating shaft, but the coaxiality (concentricity) degree of the bearing is poor, the generated noise is large, and therefore the plastic package stator with stable coaxiality (concentricity) degree and high operation reliability needs to be designed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide a plastic envelope stator for direct current external rotor electric machine for the external rotor electric machine operation of using this plastic envelope stator is more reliable.
In order to realize the above purpose, the utility model discloses the technical scheme who adopts is: a plastic envelope stator for direct current external rotor electric machine, its main part sets up to stator module, stator module wraps up in the plastic-sealed piece outward, the plastic-sealed piece is provided with the through-hole that runs through in the plastic-sealed piece along its central axis, the through-hole both ends of plastic-sealed piece are provided with bearing room and dodge the groove respectively.
Through adopting above-mentioned technical scheme, integrated into one piece has the plastic envelope spare outside stator module, form the plastic envelope stator, the through-hole on the plastic envelope stator for with the pivot cooperation, and set up the bearing room respectively and dodge the groove at through-hole both ends, wherein, place the bearing in the bearing room, dodge groove and rotor subassembly cooperation, single-end sets up bearing and pivot cooperation, be different from prior art, combine to dodge groove and bearing room, make this plastic envelope stator more accurate with the cooperation of pivot, rotor subassembly.
Preferably, the bearing chamber is integrally formed in the plastic package, and the bearing chamber is arranged in the plastic package.
By adopting the technical scheme, the bearing chamber is formed in the plastic package part, and has a protection effect on the bearing arranged in the bearing chamber.
Preferably, the bearing chamber is integrally formed on the plastic package member, and the bearing chamber is exposed at an end portion of the plastic package member.
By adopting the technical scheme, the bearing chamber which is positioned at the end part of the plastic package part and is in an exposed state can facilitate the installation of the bearing.
Preferably, an aluminum casting is provided in the bearing chamber.
Through adopting above-mentioned technical scheme, the aluminium casting sets up between bearing and plastic-sealed piece, can strengthen connection between the two, consolidates holistic structural strength.
Preferably, the cross section of the avoiding groove is in a circular truncated cone shape, and the inclined side wall of the circular truncated cone-shaped avoiding groove is provided with a downward-concave arc surface profile.
Through adopting above-mentioned technical scheme, the groove of dodging of above-mentioned structure can reduce the wearing and tearing condition of rotor subassembly.
Preferably, the plastic package part is annularly provided with an annular flange along the arc-shaped side wall of the plastic package part, and the annular flange and the plastic package part are integrally formed.
Through adopting above-mentioned technical scheme, form the recess between arc flange and the plastic-sealed piece, rotor subassembly joint in the recess, arc flange butt in the rotor subassembly outer wall for reinforcing stator module and the holistic stability of being connected of rotor subassembly.
Preferably, the stator assembly is connected with a wire clamp, and the wire clamp is formed on the plastic package part in an injection molding mode.
Through adopting above-mentioned technical scheme, the fastener is used for arranging stator module's interconnecting link, moulds plastics the fastener on plastic envelope spare for the fastener is no longer pulled from stator module easily and is separated.
Preferably, the plastic package part is provided with a longitudinal section, the longitudinal section does not intersect with the central axis of the plastic package part, and the wire clamp is installed on the longitudinal section.
Through adopting above-mentioned technical scheme, the plastic envelope spare forms the longitudinal section, and the longitudinal section not only makes plastic envelope spare whole material reduce, still provides a reliable mounting plane for the installation of fastener.
Preferably, the annular flange is provided with a notch.
Through adopting above-mentioned technical scheme, the recess that forms between arc flange and the plastic-sealed piece is easy to deposit water, easily takes place electric leakage or short circuit accident, utilizes the notch that sets up, can improve its safety in utilization performance with the row's of water in the recess.
Preferably, the plastic package is provided with a longitudinal section, and a notch is formed at the annular flange cut by the longitudinal section.
By adopting the technical scheme, the notch is directly obtained by utilizing the longitudinal section, the integral structure of the plastic package part is simplified, the die sinking is more convenient and feasible, and the die sinking cost is lower.
Compared with the prior art, the utility model has the advantages of: (1) the outer integrative injection moulding of stator module has the plastic-sealed piece, forms the plastic-sealed stator, and set up bearing room and dodge the groove respectively at the through-hole both ends of cooperation pivot, and the bearing room is seted up in one end of through-hole, and the both ends that are different from prior art all set up the bearing, the utility model discloses well plastic-sealed stator is more suitable for the low-power motor, dodges the groove and is used for cooperating with the rotor subassembly location, combines to dodge groove and bearing room, forms the plastic-sealed stator of accurate location bearing and rotor subassembly; (2) the aluminum casting is added in the bearing chamber, so that the connection between the bearing and the plastic package part can be stabilized, and the integral structure can be reinforced; (3) the outer ring of the plastic package part is provided with the annular flange, the annular flange is sleeved on the outer side wall of the rotor assembly, the connection stability of the rotor assembly is enhanced, and the annular flange is provided with the notch, so that water accumulation between the annular flange and the plastic package part can be avoided.
Drawings
FIG. 1 is a schematic sectional view of example 1;
FIG. 2 is a schematic structural view of embodiment 1;
FIG. 3 is a schematic view of another embodiment 1;
FIG. 4 is a schematic sectional view of example 2.
In the figure: 1-a stator assembly; 2-plastic packaging parts; 3-a through hole; 4-a bearing chamber; 5-avoidance groove; 510-a sloped sidewall; 6-aluminum casting; 7-an annular flange; 8-wire clamp; 9-longitudinal section; 10-notches.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
Example 1
As shown in fig. 1 to 3, the main body of the plastic package stator for the dc external rotor motor is set as a stator assembly 1, the stator assembly 1 is used for forming an excitation magnetic field to drive the rotor assembly and the rotating shaft which are matched with the stator assembly 1 to rotate, a plastic package part 2 is wrapped outside the stator assembly 1, and the plastic package part 2 is injection molded outside the stator assembly 1 to form the plastic package stator.
The plastic package part 2 is provided with a through hole 3, the through hole 3 penetrates through the plastic package part 2 along the direction of the central axis of the plastic package part 2, and the through hole 3 is used for being connected with the rotating shaft in an inserting and matching mode.
The both ends of through-hole 3 are provided with bearing room 4 respectively and dodge groove 5, and bearing room 4 sets up respectively in the below and the top of plastic-sealed spare 2 with dodging groove 5, and bearing room 4 all communicates the setting with through-hole 3 with dodging groove 5, and bearing room 4 all is greater than through-hole 3 diameter with the diameter of dodging groove 5, as shown in fig. 1. The bearing chamber 4 is used for placing a bearing matched with the rotating shaft, and the avoiding groove 5 is matched with the rotor assembly and has a positioning effect on the rotor assembly.
The plastic package stator is provided with the bearing at one side, the bearing is matched with the rotating shaft, and the bearing chamber 4 and the avoiding groove 5 are combined, so that the assembly and the matching of the plastic package stator, the rotating shaft and the rotor assembly are more accurate, and the running reliability of the direct-current outer rotor motor using the plastic package stator is higher.
The section of the avoiding groove 5 is in a circular truncated cone shape, as shown in fig. 1, the diameter of one end of the circular truncated cone-shaped avoiding groove 5 connected with the through hole 3 is smaller than that of the opposite side thereof, and the inclined side wall 510 of the circular truncated cone-shaped avoiding groove 5 is in a concave arc-shaped profile. Therefore, the rotor assembly can be matched conveniently, the abrasion degree between the rotor assembly and the rotor assembly can be reduced, and the practicability is high.
In this embodiment, the bearing chamber 4 and the avoiding groove 5 are integrally formed in the plastic package 2, wherein the bearing chamber 4 is disposed in the plastic package 2, that is, the bearing chamber 4 is not communicated with the outside, and the bearing disposed in the bearing chamber 4 is wrapped in the plastic package 2, as shown in fig. 1, the bearing chamber 4 with this structure has a certain protection effect on the bearing therein.
An aluminum casting 6 is arranged in the bearing chamber 4, the aluminum casting 6 is placed between the bearing and the plastic package 2, the connection between the bearing in the bearing chamber 4 and the plastic package 2 can be stabilized, and the integral structure can be reinforced.
In this embodiment, stator module 1 is connected with fastener 8, and fastener 8 injection moulding has arranged stator module 1's interconnecting link in fastener 8 on plastic-sealed piece 2, with fastener 8 and the integrative injection moulding of plastic-sealed piece 2, can ensure that plastic-sealed stator's lead-out wire electrical connection structural stability is better to make direct current external rotor motor's control performance have the assurance.
The plastic package part 2 is formed by plastic package of BMC plastic directly on the stator module 1 and the wire clamp 8.
The plastic package part 2 is provided with a longitudinal section 9, the longitudinal section 9 is not intersected with the central axis of the plastic package part 2, the wire clamp 8 is installed on the longitudinal section 9, as shown in fig. 2, the longitudinal section 9 provides an installation plane for the wire clamp 8, the size of the plastic package part 2 can be relatively reduced while the wire clamp 8 is conveniently installed, and materials for injection molding are saved.
The plastic-sealed part 2 is provided with an annular flange 7, the annular flange 7 is integrally injection-molded on the plastic-sealed part 2 along the arc-shaped side wall of the plastic-sealed part 2, as shown in fig. 2 and 3, a groove is formed between the annular flange 7 and the plastic-sealed part 2, the rotor assembly is sleeved outside the plastic-sealed part 2, the bottom of the rotor assembly is arranged in the groove formed by the annular flange 7 and the plastic-sealed part 2, and the annular flange 7 enables the rotor assembly to be more tightly connected with the plastic-sealed part 2 and the stator assembly 1.
The annular flange 7 is provided with a notch 10. When recess 10 had ponding, ponding will be followed notch 10 and flowed out, avoids ponding from the recess infiltration motor inside and influence the normal use of motor.
The longitudinal section 9 cuts the annular flange 7 to form a notch 10, as shown in fig. 2. The notch 10 and the plastic package part 2 are integrally formed, and the notch 10 with the structure not only can facilitate the die opening process of the plastic package part 2, but also has relatively simple die opening process, and the related die opening cost is relatively low.
Example 2
The present embodiment is different from embodiment 1 in that the bearing chamber 4 is exposed at an end portion of the plastic package 2, the end portion of the bearing chamber 4 is communicated with the outside, and as shown in fig. 4, one end surface of the bearing disposed in the bearing chamber 4 is exposed outside the plastic package 2. The bearing chamber 4 of this structure facilitates the installation of the bearing.
An aluminum casting 6 is arranged in the bearing chamber 4, the aluminum casting 6 is placed between the bearing and the plastic package 2, the connection between the bearing in the bearing chamber 4 and the plastic package 2 can be stabilized, and the integral structure can be reinforced.
Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A plastic envelope stator for direct current external rotor electric machine, its characterized in that, its main part sets up to stator module (1), stator module (1) outer parcel has plastic-sealed piece (2), plastic-sealed piece (2) are provided with through-hole (3) that run through in plastic-sealed piece (2) along its central axis, the through-hole both ends of plastic-sealed piece (2) are provided with bearing room (4) respectively and dodge groove (5).
2. The plastic package stator for the direct current external rotor motor according to claim 1, wherein the bearing chamber (4) is integrally formed in the plastic package member (2), and the bearing chamber (4) is disposed in the plastic package member (2).
3. The plastic package stator for the direct current external rotor motor according to claim 1, wherein the bearing chamber (4) is integrally formed on the plastic package member (2), and the bearing chamber (4) is exposed at an end portion of the plastic package member (2).
4. The plastic encapsulated stator for a direct current external rotor motor according to claim 1, wherein an aluminum casting (6) is arranged in the bearing chamber (4).
5. The plastic package stator for the direct current external rotor motor according to claim 1, wherein the cross-sectional profile of the avoiding groove (5) is truncated cone-shaped, and the inclined side wall (510) of the truncated cone-shaped avoiding groove (5) is configured as a concave arc profile.
6. The plastic package stator for the direct current external rotor motor according to claim 1, wherein the plastic package member (2) is provided with an annular flange (7) along an arc-shaped side wall thereof, and the annular flange (7) is integrally formed with the plastic package member (2).
7. The plastic package stator for the direct current outer rotor motor according to claim 1, wherein the stator assembly (1) is connected with a wire clamp (8), and the wire clamp (8) is injection molded on the plastic package member (2).
8. The plastic package stator for the direct current outer rotor motor according to claim 7, wherein the plastic package member (2) is provided with a longitudinal section (9), the longitudinal section (9) does not intersect with a central axis of the plastic package member (2), and the wire clamp (8) is installed on the longitudinal section (9).
9. Plastic encapsulated stator for a DC external rotor motor according to claim 6, characterized in that the annular flange (7) is provided with notches (10).
10. The plastic encapsulated stator for the direct current outer rotor motor according to claim 6, wherein the plastic encapsulated piece (2) is provided with a longitudinal section (9), and a notch (10) is formed at the position of the longitudinal section (9) where the annular flange (7) is cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120831399.3U CN214674569U (en) | 2021-04-22 | 2021-04-22 | Plastic package stator for DC outer rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120831399.3U CN214674569U (en) | 2021-04-22 | 2021-04-22 | Plastic package stator for DC outer rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214674569U true CN214674569U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120831399.3U Active CN214674569U (en) | 2021-04-22 | 2021-04-22 | Plastic package stator for DC outer rotor motor |
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| Country | Link |
|---|---|
| CN (1) | CN214674569U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243981A (en) * | 2022-01-10 | 2022-03-25 | 卧龙电气驱动集团股份有限公司 | Permanent magnet outer rotor motor |
-
2021
- 2021-04-22 CN CN202120831399.3U patent/CN214674569U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243981A (en) * | 2022-01-10 | 2022-03-25 | 卧龙电气驱动集团股份有限公司 | Permanent magnet outer rotor motor |
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