CN220470281U - Rotor assembly and electronic water pump using same - Google Patents
Rotor assembly and electronic water pump using same Download PDFInfo
- Publication number
- CN220470281U CN220470281U CN202322165079.0U CN202322165079U CN220470281U CN 220470281 U CN220470281 U CN 220470281U CN 202322165079 U CN202322165079 U CN 202322165079U CN 220470281 U CN220470281 U CN 220470281U
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- rotor
- ultrasonic welding
- impeller cover
- blades
- blade
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000003466 welding Methods 0.000 claims abstract description 63
- 239000007788 liquid Substances 0.000 claims description 21
- 229920003023 plastic Polymers 0.000 claims description 18
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a rotor assembly and an electronic water pump using the same.A blade platform is formed at one end of a rotor bracket, a plurality of blades are arranged on the blade platform of the rotor bracket, a step part is formed at the top of each blade, and an ultrasonic welding line is arranged on the upper surface of the step part of each blade; one side of the impeller cover forms ultrasonic welding grooves which are matched with the number of the blades of the rotor bracket and the shape of the ultrasonic welding grooves; the impeller cover is covered on the blade platform of the rotor bracket, so that the blades are correspondingly embedded in the ultrasonic welding groove of the impeller cover, and a gap is formed between the outer side wall of the step part of the blade and the inner side wall of the ultrasonic welding groove of the impeller cover; the utility model mainly solves the problems of how to provide an impeller assembly with good surface finish, stable flow channel and better dynamic balance performance for an electronic water pump; the utility model ensures the surface smoothness of the rotor assembly, thereby stabilizing the internal flow passage of the electronic water pump and ensuring the rotor assembly to obtain better dynamic balance performance.
Description
Technical Field
The utility model relates to the technical field of water pumps and parts thereof, in particular to a rotor assembly and an electronic water pump using the same.
Background
The water pump can drive the liquid to flow, so that the liquid can flow from one place to the other place in a directional manner, and the water pump is a mechanical device with wide application.
An electronic water pump is an important water pump category, wherein a rotor component is one of core parts of the electronic water pump; in the electronic water pump in the prior art, a rotor assembly is generally integrated with a magnetic ring and an impeller on a rotor support, the magnetic ring can rotate in a rotating magnetic field generated by a stator assembly of the electronic water pump, so that the whole rotor support and the impeller are driven to rotate, and the rotating impeller can drive liquid to flow, so that the basic function of the water pump is realized.
The Chinese patent with publication number of CN216691586U, named brushless water pump rotor assembly, discloses a typical rotor assembly structure, wherein the end part of an impeller bracket 5 (namely, the rotor bracket) is provided with a seat 54, an impeller 6 is provided with an access part 61 matched with the seat 54, and the access part 61 of the impeller 6 is accessed into the seat 54 of the impeller bracket 5; in the embodiment, the blades on the impeller 6 extend downwards to form an access part 61, and the seat 54 of the impeller bracket 5 is matched with the bottom shape of the blades; in this embodiment, the impeller 6 and the impeller holder 5 are integrally joined by ultrasonic welding.
In the rotor assembly having the above structure, when the impeller 6 and the impeller support 5 (i.e., the rotor support) are welded by ultrasonic, the connection seat 54 on the impeller support 5 is actually an ultrasonic welding groove, the bottom of the connection portion 61 on the impeller 6 needs to be provided with an ultrasonic welding line, and a gap of 0.1-0.2 mm needs to be left between the groove edge of the connection seat 54 and the side wall of the connection portion 61, and when the ultrasonic welding process is performed, the ultrasonic welding line at the bottom of the connection portion 61 of the impeller 6 is melted, so that the impeller 6 and the impeller support 5 are welded into a whole.
However, in the rotor assembly with the above structure, when the ultrasonic welding process is performed, molten plastic overflows from a gap between the blade and the seat 54 of the impeller support 5, so that the surface smoothness of the rotor assembly is affected, and a series of problems such as unstable flow passage and poor dynamic balance performance of the rotor assembly are caused after the rotor assembly is assembled to the electronic water pump.
In summary, how to provide an impeller assembly with good surface finish, stable flow channel and better dynamic balance performance for an electronic water pump is a problem to be solved.
Disclosure of Invention
The utility model aims to provide a rotor assembly and an electronic water pump using the same, which have the characteristics of good surface finish, stable flow passage and better dynamic balance performance.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a rotor assembly comprising a rotor support and an impeller cover; a blade platform is formed at one end of the rotor support, a plurality of blades are arranged on the blade platform of the rotor support, a step part is formed at the top of each blade, and an ultrasonic welding line is arranged on the upper surface of the step part of each blade; an ultrasonic welding groove matched with the number and the shape of the blades of the rotor bracket is formed on one side of the impeller cover; the impeller cover is covered on the blade platform of the rotor bracket, so that the blades are correspondingly embedded in the ultrasonic welding grooves of the impeller cover, and a gap is formed between the outer side wall of the step part of the blade and the inner side wall of the ultrasonic welding groove of the impeller cover; when the impeller cover and the blades on the rotor support are bonded by ultrasonic welding, the ultrasonic welding lines on the blades are melted into liquid plastic, and the liquid plastic is positioned at a gap between the outer side wall of the step part of the blades and the inner side wall of the ultrasonic welding groove of the impeller cover.
In the above technical solution, the section of the ultrasonic welding line of the blade is one or more of triangle, trapezoid and arch.
In the technical proposal, the clearance between the outer side wall of the step part of the blade and the inner side wall of the ultrasonic welding groove of the impeller cover is 0.05 mm-0.3 mm.
In the technical scheme, a positioning column is formed at the top of the blade, and a positioning hole matched with the positioning column is formed at the bottom of the ultrasonic welding groove of the impeller cover; when the blades are correspondingly embedded into the ultrasonic welding grooves of the impeller cover, the positioning columns are inserted into the positioning holes.
In the technical scheme, the blades are circumferentially and uniformly distributed on the blade platform of the rotor bracket, and the ultrasonic welding grooves are circumferentially and uniformly formed on one side of the impeller cover.
In the above technical scheme, the rotor assembly of the utility model further comprises a magnetic ring; the magnetic ring is sleeved on the outer side of the rotor bracket.
In the technical scheme, the outer side surface of the rotor bracket is inwards concave to form a radial inwards concave part; the magnetic ring is sleeved and embedded in the radial concave part of the rotor bracket.
In the above technical solution, the rotor assembly of the present utility model further includes a bearing; the bearing is embedded inside the rotor support.
In the above technical scheme, a clamping convex position is formed on the inner side of the rotor bracket, and a clamping groove position matched with the clamping convex position is formed on the side surface of the bearing; when the bearing is embedded in the inner side of the rotor bracket, the clamping convex position is clamped into the clamping groove position.
An electronic water pump comprising the rotor assembly.
Compared with the prior art, the utility model has the beneficial effects that: according to the rotor assembly and the electronic water pump using the same, when the impeller cover and the blades on the rotor support are welded through ultrasonic welding, the ultrasonic welding lines on the blades are melted into liquid plastic, the liquid plastic is stopped at a gap between the outer side wall of the step part of the blades and the inner side wall of the ultrasonic welding groove of the impeller cover, the liquid plastic is not easy to leak out to the surface of the rotor assembly, the surface smoothness of the rotor assembly is ensured, so that the internal flow passage of the electronic water pump is stable, and the rotor assembly has better dynamic balance performance.
Drawings
Fig. 1 is a perspective view of a rotor assembly in accordance with the present utility model.
Fig. 2 is an exploded view of the rotor assembly of the present utility model.
Fig. 3 is a cross-sectional view of a rotor assembly in accordance with the present utility model.
Fig. 4 is a partial enlarged view of a in fig. 3.
The reference numerals are: 1. a rotor bracket; 11. a blade platform; 12. a radial recess; 13. a blade; 131. ultrasonic welding lines; 132. a step portion; 133. positioning columns; 14. the clamping convex position; 2. an impeller cover; 21. an ultrasonic welding groove; 211. positioning holes; 22. a water passing hole; 3. a magnetic ring; 4. a bearing; 41. and a clamping groove.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The present embodiment provides a rotor assembly as one of the components of a water pump that is capable of rotating under the magnetic coupling drive of a stator assembly to drive the flow of liquid.
Referring to fig. 1 to 4, the rotor assembly of the present embodiment includes a rotor bracket 1 and an impeller cover 2.
The rotor bracket 1 and the impeller cover 2 are engineering plastic workpieces suitable for performing ultrasonic welding process, the rotor bracket 1 is a cylindrical bracket, the impeller cover 2 is a circular cover body, and it is understood that a water passing hole 22 is formed at the center of the impeller cover 2.
One end of the rotor bracket 1 is formed with a blade platform 11, the blade platform 11 is actually a platform-shaped structural part formed by extending one end of the rotor bracket 1 outwards along the radial direction, a plurality of blades 13 are arranged on the blade platform 11 of the rotor bracket 1, the blades 13 and the rotor bracket 1 are integrally injection molded, the tops of the blades 13 are formed with step parts 132, the upper surfaces of the step parts 132 of the blades 13 are provided with ultrasonic welding lines 131, specifically, the step parts 132 are narrowed parts of the tops of the blades 13, and the cross sections of the step parts are step-shaped.
One side of the impeller cover 2 is formed with ultrasonic welding grooves 21 which are matched with the number and shape of the blades 13 of the rotor frame 1, and in practice, the ultrasonic welding grooves 21 are strip-shaped grooves arranged on the surface of the impeller cover 2.
The impeller cover 2 is covered on the vane platform 11 of the rotor bracket 1, the vanes 13 are correspondingly embedded in the ultrasonic welding grooves 21 of the impeller cover 2, and a gap is formed between the outer side wall of the step part 132 of the vane 13 and the inner side wall of the ultrasonic welding groove 21 of the impeller cover 2, at this time, the bottom surface of the impeller cover 2 abuts against the bottom of the step part 132 of the vane 13, so that the gap forms a substantially closed space.
When the impeller cover 2 and the vane 13 on the rotor frame 1 are bonded by ultrasonic welding, the ultrasonic welding line 131 on the vane 13 is melted into liquid plastic, and the liquid plastic is stopped at a gap between the outer side wall of the step 132 of the vane 13 and the inner side wall of the ultrasonic welding groove 21 of the impeller cover 2.
In the present embodiment, the blades 13 are circumferentially Xiang Junyun arranged on the blade platform 11 of the rotor frame 1, and the ultrasonic welding grooves 21 are circumferentially uniformly formed on one side of the impeller cover 2.
Specifically, the cross section of the ultrasonic welding line 131 of the blade 13 is one or more of triangle, trapezoid and arch, and in this embodiment, the cross section of the ultrasonic welding line 131 of the blade 13 is triangle.
Specifically, the clearance between the outer side wall of the stepped portion 132 of the vane 13 and the inner side wall of the ultrasonic welding groove 21 of the impeller cover 2 is 0.05mm to 0.3mm, and in a preferred embodiment, the clearance is 0.1mm to 0.2mm; the size of the gap is determined in the size range, and on the premise of not influencing the positioning accuracy of the impeller cover 2, sufficient and reasonable stopping space can be provided for the liquid plastic after the ultrasonic welding line 131 is melted.
Further, a positioning column 133 is formed at the top of the vane 13, the positioning column 133 is a cylindrical structure obtained by integral injection molding with the whole rotor bracket 1, a positioning hole 211 matched with the positioning column 133 is formed at the bottom of the ultrasonic welding groove 21 of the impeller cover 2, and the positioning hole 211 is a round hole-shaped structure obtained by integral injection molding with the whole impeller cover 2; when the blades 13 are correspondingly embedded in the ultrasonic welding grooves 21 of the impeller cover 2, the positioning posts 133 are inserted into the positioning holes 211 to radially and circumferentially position the impeller cover 2 and the rotor frame 1.
Further, the rotor assembly of the embodiment further comprises a magnetic ring 3, the magnetic ring 3 is an integrally formed annular permanent magnet, and the magnetic ring 3 is sleeved on the outer side of the rotor bracket 1.
Further, the outer side surface of the rotor support 1 is concaved inwards to form a radial concave part 12, and the magnetic ring 3 is sleeved and embedded in the radial concave part 12 of the rotor support 1, in this way, the outer side surface of the magnetic ring 3 is level with the outer side surface of the rotor support 1, so that water flow passing through the surface of the rotor support 1 is smoother.
Further, the rotor assembly of the present embodiment further includes a bearing 4, wherein the bearing 4 is one of a graphite bearing 4, a ceramic bearing 4 and a self-lubricating sleeve, and the bearing 4 is embedded inside the rotor frame 1.
Further, the inner side of the rotor bracket 1 forms a clamping convex position 14, the clamping convex position 14 is a convex structure obtained by integral injection molding with the whole rotor bracket 1, the side surface of the bearing 4 forms a clamping groove position 41 matched with the clamping convex position 14, and the clamping groove position 41 is a concave position on the surface of the bearing 4; when the bearing 4 is fitted inside the rotor frame 1, the engaging projection 14 is engaged with the engaging groove 41, thereby preventing the bearing 4 from dislocating.
In the rotor assembly of the embodiment, during manufacturing, firstly, the bearing 4 and the magnetic ring 3 are placed into an injection mold of the rotor bracket 1, after the injection mold of the rotor bracket 1 is injected, structural parts such as a body of the rotor bracket 1, a blade platform 11, a blade 13 and the like are formed, and characteristic parts such as a step part 132, an ultrasonic welding line 131, a positioning column 133, a radial concave part 12, a clamping convex part 14 and the like are formed, at the moment, the magnetic ring 3 and the bearing 4 are combined with the rotor bracket 1 into a whole; then, the impeller cover 2 is covered on the vane platform 11 of the rotor bracket 1, so that the vanes 13 are correspondingly embedded in the ultrasonic welding grooves 21 of the impeller cover 2, at the moment, a gap is reserved between the outer side wall of the step part 132 of the vanes 13 and the inner side wall of the ultrasonic welding grooves 21 of the impeller cover 2, and the positioning posts 133 of the vanes 13 are inserted into the positioning holes 211 of the impeller cover 2; when the impeller cover 2 and the blades 13 on the rotor support 1 are welded by ultrasonic, the ultrasonic welding lines 131 on the blades 13 are melted into liquid plastic, after the liquid plastic is solidified, the impeller cover 2 and the blades 13 on the rotor support 1 are combined into a whole, in the process, the liquid plastic is stopped at a gap between the outer side wall of the step part 132 of the blades 13 and the inner side wall of the ultrasonic welding groove 21 of the impeller cover 2, the liquid plastic is not easy to leak to the surface of the rotor assembly, and the surface smoothness of the rotor assembly is ensured.
The embodiment also provides an electronic water pump, which comprises the rotor assembly.
In the rotor assembly and the electronic water pump using the same in the embodiment, when the impeller cover 2 and the blades 13 on the rotor support 1 are welded by ultrasonic waves, the ultrasonic welding lines 131 on the blades 13 are melted into liquid plastic, the liquid plastic is stopped at a gap between the outer side wall of the step part 132 of the blades 13 and the inner side wall of the ultrasonic welding groove 21 of the impeller cover 2, the liquid plastic is not easy to leak to the surface of the rotor assembly, the surface smoothness of the rotor assembly is ensured, so that the internal flow passage of the electronic water pump is stable, and the rotor assembly has better dynamic balance performance.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A rotor assembly comprising a rotor support and an impeller cover;
a blade platform is formed at one end of the rotor support, a plurality of blades are arranged on the blade platform of the rotor support, a step part is formed at the top of each blade, and an ultrasonic welding line is arranged on the upper surface of the step part of each blade;
an ultrasonic welding groove matched with the number and the shape of the blades of the rotor bracket is formed on one side of the impeller cover;
the impeller cover is covered on the blade platform of the rotor bracket, so that the blades are correspondingly embedded in the ultrasonic welding grooves of the impeller cover, and a gap is formed between the outer side wall of the step part of the blade and the inner side wall of the ultrasonic welding groove of the impeller cover;
when the impeller cover and the blades on the rotor support are bonded by ultrasonic welding, the ultrasonic welding lines on the blades are melted into liquid plastic, and the liquid plastic is positioned at a gap between the outer side wall of the step part of the blades and the inner side wall of the ultrasonic welding groove of the impeller cover.
2. The rotor assembly of claim 1, wherein: the ultrasonic welding line of the blade is one or more of triangular, trapezoidal and arched in cross section.
3. The rotor assembly of claim 1 or 2, wherein: the clearance between the outer side wall of the step part of the blade and the inner side wall of the ultrasonic welding groove of the impeller cover is 0.05 mm-0.3 mm.
4. The rotor assembly of claim 1 or 2, wherein: a positioning column is formed at the top of the blade, and a positioning hole matched with the positioning column is formed at the bottom of the ultrasonic welding groove of the impeller cover;
when the blades are correspondingly embedded into the ultrasonic welding grooves of the impeller cover, the positioning columns are inserted into the positioning holes.
5. The rotor assembly of claim 1, wherein: the blades are circumferentially and uniformly distributed on the blade platform of the rotor bracket, and the ultrasonic welding grooves are circumferentially and uniformly formed on one side of the impeller cover.
6. The rotor assembly of claim 1, wherein: the device also comprises a magnetic ring;
the magnetic ring is sleeved on the outer side of the rotor bracket.
7. The rotor assembly of claim 6, wherein: the outer side surface of the rotor support is inwards concave to form a radial inwards concave part;
the magnetic ring is sleeved and embedded in the radial concave part of the rotor bracket.
8. The rotor assembly of claim 1, wherein: the device also comprises a bearing;
the bearing is embedded inside the rotor support.
9. The rotor assembly as recited in claim 8, wherein: the inner side of the rotor bracket is provided with a clamping convex position, and the side surface of the bearing is provided with a clamping groove position matched with the clamping convex position;
when the bearing is embedded in the inner side of the rotor bracket, the clamping convex position is clamped into the clamping groove position.
10. An electronic water pump comprising a rotor assembly according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322165079.0U CN220470281U (en) | 2023-08-12 | 2023-08-12 | Rotor assembly and electronic water pump using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322165079.0U CN220470281U (en) | 2023-08-12 | 2023-08-12 | Rotor assembly and electronic water pump using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220470281U true CN220470281U (en) | 2024-02-09 |
Family
ID=89776361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322165079.0U Active CN220470281U (en) | 2023-08-12 | 2023-08-12 | Rotor assembly and electronic water pump using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220470281U (en) |
-
2023
- 2023-08-12 CN CN202322165079.0U patent/CN220470281U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 30 Dapu Industrial Street, Changping Town, Dongguan City, Guangdong Province, 523000 Patentee after: Guangdong Shenpeng Technology Co.,Ltd. Country or region after: China Address before: 523000 Gangzi Dapu Industrial Zone, Changping Town, Dongguan City, Guangdong Province Patentee before: DONGGUAN SHENPENG ELECTRONICS Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |