CN211296365U - Outer rotor component - Google Patents
Outer rotor component Download PDFInfo
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- CN211296365U CN211296365U CN201922156533.XU CN201922156533U CN211296365U CN 211296365 U CN211296365 U CN 211296365U CN 201922156533 U CN201922156533 U CN 201922156533U CN 211296365 U CN211296365 U CN 211296365U
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- end cover
- injection molding
- magnetic ring
- ring injection
- rotor component
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Abstract
The utility model discloses an external rotor part, including the end cover, magnetic ring injection molding and pivot, the end cover has connecting portion, magnetic ring injection molding cladding connecting portion, the pivot is connected with the end cover, after fixing the end cover in injection mold, it forms the magnetic ring injection molding with cladding connecting portion to mould plastics in the connecting portion department of end cover, be connected the pivot with the end cover again, thereby accomplish the production and the equipment of this rotor part, the production process is few, and the end cover is compared traditional shell and need not the lateral wall butt with the magnetic ring injection molding, practice thrift the material of end cover, therefore, the cost is low, the phenomenon of air gap inequality between magnetic ring injection molding and traditional shell has still been avoided, the size precision is high.
Description
Technical Field
The utility model relates to a permanent-magnet machine technical field, especially an external rotor part.
Background
The traditional external rotor component is formed by assembling a plurality of parts, usually comprises a shell, a magnetic ring and a rotating shaft, wherein the shell is generally made of metal materials and is formed by casting or machining, then the rotating shaft is pressed into the shell, and finally the magnetic ring is placed into the shell to enable the magnetic ring to be tightly absorbed with the inner wall of the shell.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide an outer rotor part that production process is few, with low costs, size precision is high.
The utility model adopts the technical proposal that:
according to the utility model discloses an outer rotor, include: an end cap having a connection portion; the magnetic ring injection molding piece covers the connecting part; and the rotating shaft is connected with the end cover.
According to the utility model discloses external rotor part has following beneficial effect at least: after the end cover is fixed in the injection mold, the connecting part of the end cover is subjected to injection molding to form a magnetic ring injection molding part so as to coat the connecting part, and then the rotating shaft is connected with the end cover, so that the production and the assembly of the rotor part are completed, the production process is few, the end cover is compared with the traditional shell and does not need to be abutted against the side wall of the magnetic ring injection molding part, the material of the end cover is saved, the cost is low, the phenomenon of uneven air gap between the magnetic ring injection molding part and the traditional shell is avoided, and the size precision is.
According to the utility model discloses a some embodiments, be equipped with the locating hole on the end cover, at the in-process of moulding plastics, this locating hole is convenient for fixed end cover to play the effect of location, guarantee position accuracy between end cover and the magnetic ring injection molding.
According to some embodiments of the utility model, be equipped with the strengthening rib on the end cover, the strengthening rib with the integrative injection moulding of magnetic ring injection molding, this strengthening rib is strengthened being connected between end cover and the magnetic ring injection molding.
According to the utility model discloses a some embodiments, the strengthening rib includes first strengthening rib and second strengthening rib, first strengthening rib sets up the front of end cover, the second strengthening rib sets up the back of end cover, first strengthening rib with the second strengthening rib respectively with the integrative injection moulding of magnetic ring injection molding three, the end cover is located between first strengthening rib and the second strengthening rib to it is more firm to make the connection between end cover and the magnetic ring injection molding.
According to the utility model discloses a some embodiments, be equipped with the water conservancy diversion runner on the end cover, the strengthening rib part is located in the water conservancy diversion runner, end cover and magnetic ring injection molding are at the in-process of the equipment of moulding plastics, and the magnetic plastic of the flow on end cover surface can flow into the water conservancy diversion runner, and the back is accomplished in moulding plastics, and the magnetic plastic in the water conservancy diversion runner solidifies and becomes the partly of strengthening rib, makes being connected between strengthening rib and the end cover more firm.
According to the utility model discloses a some embodiments, the water conservancy diversion runner is the axial and link up the runner, first strengthening rib with the second strengthening rib passes through water conservancy diversion runner interconnect, the end cover be located first strengthening rib with between the second strengthening rib, make the end cover respectively with first strengthening rib and the second strengthening rib between be connected more firm to make the end cover and the magnetic ring injection molding between be connected more firm.
According to some embodiments of the utility model, be equipped with the centre bore on the end cover, the centre bore with the magnetic ring injection molding is coaxial, the pivot is passed the centre bore with the end cover is connected, and this centre bore is convenient for the pivot to be connected with the end cover to because this centre bore is coaxial with the magnetic ring injection molding, make the concentricity of pivot and magnetic ring injection molding better.
According to the utility model discloses a some embodiments, the end cover in centre bore department is equipped with the axle bed, be equipped with on the axle bed with the through-hole of centre bore intercommunication, the pivot passes through the through-hole is connected with the axle bed, and the inner wall and the pivot butt of axle bed, this axle bed play the effect of fixed pivot, make the pivot and be connected between the end cover more firm.
According to some embodiments of the utility model, the strengthening rib the axle bed with the integrative injection moulding of magnetic ring injection molding three, the magnetic ring injection molding is connected with the strengthening rib promptly, and the strengthening rib is connected with the axle bed, at the in-process of moulding plastics, one shot forming, and the process is simple to make being connected between axle bed and the end cover more firm, make being connected between end cover and the magnetic ring injection molding also more firm.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a structural view of an outer rotor component according to an embodiment of the present invention;
figure 2 is an exploded view of the outer rotor component of figure 1;
fig. 3 is a structural diagram of the magnetic ring injection molding part, the reinforcing ribs and the shaft seat of the outer rotor part in fig. 1, which are integrally injection molded;
figure 4 is a cross-sectional view of the outer rotor component of figure 1.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Referring to fig. 1 and 2, the outer rotor component according to the embodiment of the present invention includes an end cover 100, a magnetic ring injection molded part 200 and a rotating shaft 300, the end cover 100 has a connecting portion, and the magnetic ring injection molded part 200 covers the connecting portion, i.e., after the end cover 100 is fixed in an injection mold, the connecting portion is injection molded at the connecting portion of the end cover 100 to cover the connecting portion, so that the connecting portion of the end cover 100 is embedded into the magnetic ring injection molded part 200, and the two are tightly connected; the magnetic ring injection molding piece 200 is made of magnetic plastic by adding magnetic materials such as ferrite, neodymium iron boron and the like into plastic, and the end cover 100 can be made of metal; the rotating shaft 300 is connected with the end cover 100, and the rotating shaft 300 and the end cover 100 can be connected in a welding mode, a riveting mode and the like; the production processes of the outer rotor component are few, the end cover 100 is not required to be abutted against the side wall of the magnetic ring injection molding piece 200 compared with the traditional shell, the material of the end cover 100 is saved, the cost is low, the phenomenon of uneven air gaps between the magnetic ring injection molding piece 200 and the traditional shell is avoided, and the size precision is high.
In some embodiments, the end cap 100 is provided with a plurality of positioning holes 110, during the injection molding process, the positioning holes 110 are convenient for fixing the end cap 100 and play a role in positioning, so as to ensure the position accuracy between the end cap 100 and the magnetic ring injection molding part 200, and the number of the positioning holes 110 may be multiple, and the specific shape and number are not limited herein.
In some embodiments, the end cap 100 is provided with a reinforcing rib 210, the reinforcing rib 210 and the magnetic ring injection molded part 200 are integrally injection molded, and during the injection molding process, the reinforcing rib 210 is an injection molded part of the magnetic ring injection molded part 200 extending to the end cap 100 and is used for reinforcing the connection between the end cap 100 and the magnetic ring injection molded part 200; the reinforcing ribs 210 may be disposed on the front surface of the end cap 100, or disposed on the back surface of the end cap 100, or disposed on both the front surface and the back surface of the end cap 100, and the specific shape and number of the reinforcing ribs 210 are not limited herein.
As shown in fig. 3 and 4, in some embodiments, the reinforcing ribs 210 include a first reinforcing rib 211 and a second reinforcing rib 212, the first reinforcing rib 211 is disposed on the front surface of the end cap 100, the second reinforcing rib 212 is disposed on the back surface of the end cap 100, the first reinforcing rib 211 and the second reinforcing rib 212 are respectively connected to the magnetic ring injection molded part 200 and are integrally injection molded, and the end cap 100 is disposed between the first reinforcing rib 211 and the second reinforcing rib 212, so that the connection between the end cap 100 and the magnetic ring injection molded part 200 is more stable.
In some embodiments, the end cap 100 is provided with the flow guiding channels 140, during the injection molding process of the end cap 100 and the magnetic ring injection molded part 200, the flowing magnetic plastic on the surface of the end cap 100 flows into the flow guiding channels 140, and after the injection molding process is completed, the magnetic plastic in the flow guiding channels 140 is solidified to become a part of the reinforcing ribs 210, so that the connection between the reinforcing ribs 210 and the end cap 100 is more stable.
As shown in fig. 4, in some embodiments, the diversion flow channel 140 is an axial through flow channel, a first reinforcing rib 211 is disposed on a front surface of the end cover 100, a second reinforcing rib 212 is disposed on a back surface of the end cover 100, the end cover 100 is located between the first reinforcing rib 211 and the second reinforcing rib 212, during the injection molding process, magnetic plastics on the first reinforcing rib 211 and the second reinforcing rib 212 flow into the diversion flow channel 140, and after the injection molding is completed, the first reinforcing rib 211 and the second reinforcing rib 212 are connected to each other through the diversion flow channel 140, so that the connection between the end cover 100 and the first reinforcing rib 211 and the connection between the end cover 100 and the magnetic ring injection molding part 200 are more stable.
In some embodiments, the end cap 100 is provided with a central hole 120, the central hole 120 is coaxial with the magnetic ring injection molding piece 200, the rotating shaft 300 penetrates through the central hole 120 to be connected with the end cap 100, the central hole 120 facilitates the connection of the rotating shaft 300 and the end cap 100, and the central hole 120 is coaxial with the magnetic ring 200, so that the concentricity of the rotating shaft 300 and the magnetic ring 200 is good, and the performance of the motor is improved.
In some embodiments, the end cap 100 is provided with the shaft seat 130 at the central hole 120, the shaft seat 130 is provided with a through hole 131 communicated with the central hole 120, the rotating shaft 300 is connected with the shaft seat 130 through the through hole 131, the inner wall of the shaft seat 130 abuts against the rotating shaft 300, and the shaft seat 130 plays a role of fixing the rotating shaft 300, so that the connection between the rotating shaft 300 and the end cap 100 is more stable; the shaft seat 130 and the end cover 100 may be formed by machining in an integrated machine, or during the injection molding of the magnetic ring injection molded part 200, the rotating shaft 300 is firstly fixed through the central hole 120, and then the shaft seat 130 is formed by injection molding along the periphery of the rotating shaft 300, so that the inner wall of the shaft seat 130 is tightly abutted to the rotating shaft 300.
In some embodiments, the reinforcing rib 210, the shaft seat 130 and the magnetic ring injection molded part 200 are integrally injection molded, that is, the end cover 100 is fixed in an injection mold, after the rotating shaft 300 is connected with the end cover 100, the connecting part is injection molded at the connecting part of the end cover 100 to cover the connecting part, so that the connecting part of the end cover 100 is embedded into the magnetic ring injection molded part 200, meanwhile, magnetic plastic flows along the end cover 100 to form the reinforcing rib 210 by injection molding, the flowing magnetic plastic is injection molded along the rotating shaft 300 to form the shaft seat 130, so that the magnetic ring injection molded part 200 is connected with the reinforcing rib 210, and the reinforcing rib 210 is connected with the shaft seat 130, so that the connection between the end cover 100 and the magnetic.
It is readily understood by those skilled in the art that the above-described preferred modes can be freely combined and superimposed without conflict.
The above is only the preferred embodiment of the present invention, not limiting the patent scope of the present invention, all of which are under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct or indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (9)
1. An outer rotor component, comprising:
an end cap (100), the end cap (100) having a connection;
the magnetic ring injection molding piece (200) covers the connecting part;
and the rotating shaft (300) is connected with the end cover (100).
2. The external rotor component of claim 1, wherein: the end cover (100) is provided with a positioning hole (110).
3. The external rotor component of claim 1, wherein: the end cover (100) is provided with a reinforcing rib (210), and the reinforcing rib (210) and the magnetic ring injection molding piece (200) are integrally formed in an injection molding mode.
4. The external rotor component of claim 3, wherein: the reinforcing ribs (210) comprise first reinforcing ribs (211) and second reinforcing ribs (212), the first reinforcing ribs (211) are arranged on the front face of the end cover (100), the second reinforcing ribs (212) are arranged on the back face of the end cover (100), and the first reinforcing ribs (211) and the second reinforcing ribs (212) are respectively integrally formed with the magnetic ring injection molding piece (200) in an injection molding mode.
5. The external rotor component of claim 4, wherein: the end cover (100) is provided with a flow guide runner (140), and the reinforcing rib (210) is partially positioned in the flow guide runner (140).
6. The external rotor component of claim 5, wherein: the flow guide flow channel (140) is an axial through flow channel.
7. The external rotor component of claim 3, wherein: the end cover (100) is provided with a central hole (120), the central hole (120) is coaxial with the magnetic ring injection molding piece (200), and the rotating shaft (300) penetrates through the central hole (120) to be connected with the end cover (100).
8. The external rotor component of claim 7, wherein: the end cover (100) is provided with a shaft seat (130) at the central hole (120), the shaft seat (130) is provided with a through hole (131) communicated with the central hole (120), and the rotating shaft (300) is connected with the shaft seat (130) through the through hole (131).
9. The external rotor component of claim 8, wherein: the reinforcing rib (210), the shaft seat (130) and the magnetic ring injection molding piece (200) are integrally formed in an injection molding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922156533.XU CN211296365U (en) | 2019-12-05 | 2019-12-05 | Outer rotor component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922156533.XU CN211296365U (en) | 2019-12-05 | 2019-12-05 | Outer rotor component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211296365U true CN211296365U (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922156533.XU Active CN211296365U (en) | 2019-12-05 | 2019-12-05 | Outer rotor component |
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| Country | Link |
|---|---|
| CN (1) | CN211296365U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114665629A (en) * | 2022-04-20 | 2022-06-24 | 成都银河磁体股份有限公司 | Magnet structure, magnetic rotor and motor |
-
2019
- 2019-12-05 CN CN201922156533.XU patent/CN211296365U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114665629A (en) * | 2022-04-20 | 2022-06-24 | 成都银河磁体股份有限公司 | Magnet structure, magnetic rotor and motor |
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