CN204992818U - Liquid pump and driving motor thereof - Google Patents
Liquid pump and driving motor thereof Download PDFInfo
- Publication number
- CN204992818U CN204992818U CN201520672323.5U CN201520672323U CN204992818U CN 204992818 U CN204992818 U CN 204992818U CN 201520672323 U CN201520672323 U CN 201520672323U CN 204992818 U CN204992818 U CN 204992818U
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- Prior art keywords
- rotor
- sealing shroud
- motor
- stator
- magnetic core
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Abstract
The utility model provides a liquid pump and driving motor thereof, includes the motor and by motor drive's impeller, the motor includes stator, rotor and the seal cover between stator and rotor, the seal cover is pegged graft in the stator, the rotor is rotationally acceptd in the seal cover, impeller connection rotates along with the rotor is synchronous on the rotor, the outer wall of seal cover is formed with the step along radial outside protrusion, the stator is replaced mutually with the terminal surface of step and is fixed a position in the axial, still be formed with on the outer wall of seal cover along axially extended rib, the rib extends to the terminal surface of step at least for at the relative axial displacement of when equipment guide seal cover with the stator, guarantee to decide the coaxial nature between the rotor, make motor smooth operation, noise abatement's production.
Description
Technical field
The utility model relates to liquid pump, particularly relates to the drive motors of liquid pump.
Background technology
In domestic electric appliance, as washing machine, dishwasher etc., be provided with liquid pump and pressurize to water and carry, to clean in the water introducing equipment of cleaning clothing, dishes etc., and the sewage after cleaning the most at last is discharged.
Existing liquid pump normally rotates with electric machine drives impeller.Wherein, motor is made up of U-shaped iron core and the p-m rotor be arranged at rotationally in iron core.Described iron core is wound with coil, and coil is connected with drive circuit, makes iron core polarize after energising, rotates with p-m rotor effect drive rotor.Described impeller is then connected to rotor synchronous axial system on rotor, drives water flow.Reveal for avoiding water and cause short circuit, between described rotor and iron core, be provided with sealing shroud.
But existing core structure is difficult to ensure its coaxial line when assembling, and affects the stationarity of rotor turns.Paste be not by iron core assembly in sealing shroud time, iron core hardness angle, often forms scraping to the sealing shroud of plastics, form chip, if be folded between iron core and sealing shroud, make iron core assembly not in place, the axis of rotor deviates, and causes rotor to operate unstable, produces larger noise.
Utility model content
In view of this, a kind of motor stable, noise is little and adopt the liquid pump of this motor of operating is provided.
On the one hand, the utility model provides a kind of motor, the sealing shroud comprising stator, rotor and be formed between stator and rotor, described sealing shroud is plugged in stator, described rotor is contained in sealing shroud rotationally, the outside wall surface of described sealing shroud is radially protruded and is formed with step, the end face of described stator and step offsets to withstand on and axially locates, the outside wall surface of described sealing shroud is also formed with the rib extended vertically, described rib at least extends to the end face of step, for guiding sealing shroud and the moving to axial of stator when assembling.
Preferably, the circuit board that described stator comprises U-shaped magnetic core, is wound in the coil on magnetic core and is connected with coil, described magnetic core is formed with a pair pole pawl, and described pole pawl is sheathed in the outside wall surface of sealing shroud, and the internal face indent of pole pawl forms the polar arc face of surrounding rotor.
Preferably, the outside wall surface of described polar arc face and sealing shroud is affixed, and the rib on sealing shroud inserts in the teeth groove extremely between pawl.
Preferably, described step forms depression in the circumferential both sides of rib, and described depression makes the end face of step disconnect in the circumferential.
Preferably, the diameter in described polar arc face is greater than the external diameter of the outside wall surface of sealing shroud, and separately diametrically, described rib and polar arc face are affixed the outside wall surface of polar arc face and sealing shroud.
Preferably, described rib is multiple, and the circumferential uniform intervals along sealing shroud is arranged.
Preferably, described polar arc face is formed with startup groove.
Preferably, be formed with teeth groove between the end that described a pair pole pawl is corresponding, be formed with air gap between the outside wall surface of described rotor and the polar arc face of stator, the ratio of the width of described teeth groove and the width of air gap is greater than 0 and is less than 2.
Preferably, be formed with teeth groove between the end that described a pair pole pawl is corresponding, the end face of the end of each pole pawl is crossing with polar arc face forms wedge angle.
Preferably, the end face of the end of each pole pawl and polar arc face intersect vertically the wedge angle of formation 90 degree.
Preferably, described motor is electric machine, and the rotor of motor is p-m rotor.
The utility model provides a kind of motor on the other hand, comprise stator and can relative stator rotate rotor, described stator and rotor be one of them winding comprising magnetic core and be wound in magnetic core at least, described magnetic core is installed and is positioned to a matrix, described matrix having depression, installing in described magnetic core and matrix process because both relative movements cause chip that is rubbing against one another thus that produce for holding.
Preferably, described matrix is located between stators and rotators diametrically.
Preferably, described matrix has the axial end of locating described magnetic core, and the both sides of described axial end are located at by described depression and described magnetic core.
Preferably, described matrix establishes axially extended rib, and for guiding the relative movement of described magnetic core and matrix, described rib is crossing with described axial end, and described depression comprises two, is divided into the circumferential both sides of described rib.
The utility model on the one hand provides a kind of liquid pump again, comprises above-mentioned motor and by motor-driven impeller, described impeller is connected on rotor with rotor synchronous axial system.
Preferably, described matrix is the cylindrical structure that one end open is closed in one end, and described impeller is arranged at the openend of matrix, and the openend of described matrix is connected with the shell one of impeller, described step near matrix openend and away from blind end.
Compared to prior art, the sealing shroud of the motor of the utility model liquid pump is formed the assembling of rib guiding stator and sealing shroud, ensure the coaxiality between rotor, make motor smooth operation, reduce the generation of noise.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of an embodiment of the utility model liquid pump.
Fig. 2 is the exploded view of Fig. 1.
Another angular views that Fig. 3 is liquid pump shown in Fig. 1.
Fig. 4 is the schematic perspective view of the magnetic core of liquid pump shown in Fig. 3.
Fig. 5 is the schematic perspective view of the sealing shroud of liquid pump shown in Fig. 3.
Fig. 6 is the assembly drawing of sealing shroud shown in magnetic core and Fig. 5 shown in Fig. 4.
Fig. 7 is the front view of Fig. 6.
Fig. 8 is the stereogram of another embodiment of the sealing shroud of the utility model liquid pump.
The assembling schematic diagram that Fig. 9 is sealing shroud shown in Fig. 8 and magnetic core.
Embodiment
Below in conjunction with accompanying drawing, by describing in detail embodiment of the present utility model, will make the technical solution of the utility model and other beneficial effects apparent.Be appreciated that accompanying drawing only provides reference and explanation use, be not used for being limited the utility model.The size shown in accompanying drawing is only for ease of clear description, and does not limit proportionate relationship.
As Figure 1-3, according to the impeller 12 that the liquid pump of the utility model one embodiment comprises motor 10 and driven by motor 10.Described motor 10 is preferably electric machine, comprises stator 14, rotor 16 and is arranged at the sealing shroud (also can be described as matrix) 18 between rotor 16 and stator 14.The circuit board that described stator 14 comprises magnetic core 20, is wound in the coil 22 on magnetic core 20 and is connected with coil 22.Preferably, described magnetic core 20 is U-shaped iron core, and described rotor 12 is p-m rotor, and magnetic core 20 and rotor 12 form a pair magnetic pole respectively, and interaction drive rotor 12 rotates.Described impeller 12 is connected in the rotating shaft 17 of rotor 16, with rotor 16 synchronous axial system, promotes the liquid flows such as water.
As shown in Figure 4, described magnetic core 20 comprises end 24 and by described end 24 vertically outwardly directed two polar arms 26.In the present embodiment, described end 24 and polar arm 26, respectively by some thin slices, to form as silicon steel sheet etc. is stacking and machinery is connected.Preferably.Described end 24 and polar arm 26 form dove-tail form buckle and are connected, and avoid connecting rear disengagement.In the present embodiment, be formed with draw-in groove 28 respectively in the both sides of end 24, described two polar arm 26 correspondences are formed with corresponding fixture block 30 respectively and are connected with draw-in groove 28 buckle.In other embodiments, described draw-in groove 28 also can be formed on polar arm 26, and correspondingly described fixture block 30 is formed on end 24, is similarly connected to form described magnetic core 20 by snap.The present embodiment end 24 and polar arm 26 respectively shaping machinery are again connected, and can facilitate the winding of coil 22.In certain embodiments, magnetic core 20 also can be integrative-structure.
Two polar arm 26 structures of described magnetic core 20 are substantially identical, and the interval that is parallel to each other is arranged.Each polar arm 26, all in strip, comprises linking arm 32 and is formed at the pole pawl 34 of end of linking arm 32.Described two linking arm 32 parallel interval arrange, each linking arm 32 towards end 24 the outwardly formation one of end face described in fixture block 30 be connected with draw-in groove 28.In the present embodiment, namely described coil 22 is set around on linking arm 32, and mutually connects.Described the two poles of the earth pawl 34, away from end 24, as a pair magnetic pole of stator 14 magnetic core 20, to be energized after-polarization at coil 22, to have contrary polarity.Described the two poles of the earth pawl 34 relatively and interval arrange, the internal face of pole pawl 34 is recessed in the space 38 forming collecting rotor 16 between the two poles of the earth pawl 34, the internal face of the two poles of the earth pawl 34 then forms the polar arc face 36 of ambient 38, described space 38 is in cylindric, described polar arc face 36 is roughly in the face of cylinder, corresponding with the polar arc face of rotor 12 diametrically.
In the present embodiment, each pole pawl 34 is roughly c-shaped, the both sides of its circumference are horizontal relative to linking arm 32 is protrudingly formed with two pole tips 40, described pole tip 40 is almost parallel relative to end 24, the interior angle of the end of each pole tip 40, namely the angle that the end face of pole tip 40 and polar arc face 36 are formed is wedge angle, is preferably the right angle of 90 degree, and namely both intersect vertically.Preferably, the length that described pole tip 40 stretches out is slightly less than the half of the width at the interval between two linking arms 32.Arm like this is after assembled, and two pole tips 40 of the same side of the two poles of the earth pawl 34 are arranged in opposite directions, forms a little teeth groove 42 between end.The width d1 of described teeth groove 42 is much smaller than the width at the interval between linking arm 32, and while avoiding leakage field, significantly reduce teeth groove 42 torque, make the running of rotor 16 more steady, noise is little as far as possible.
Preferably, described polar arc face 36 is established the startup groove 44 of indent, described startup groove 44 departs from central shaft X (as shown in Figure 7) certain angle of pole pawl 34.In the present embodiment, described startup groove 44 is two, lays respectively on the two poles of the earth pawl 34, and wherein one starts the pole tip 40 of groove 44 near the inner side of the pole pawl 34 of its correspondence, another starts pole tip 40, the two startup groove 44 of groove 44 near the outside of the pole pawl 34 of its correspondence and differs 180 degree in the circumferential.Start the central shaft X that groove 44 departs from pole pawl 34, make motor 10 when power-off shuts down, the pole axis of rotor 16 departs from the central shaft X certain angle of pole pawl 34, namely avoiding dead-centre position, guaranteeing that motor 10 can start smoothly when being again energized.
As shown in Figure 5, described sealing shroud 18 is for closing the cylindrical structure of one end open in one end, rotor 16 is contained in described sealing shroud 18 rotationally, matrix 18 is separated with between rotor 16 and stator 12, the outside wall surface of rotor 16 and the polar arc face 36 of stator form main air gap diametrically separately, and the width of described main air gap is d2.In startup groove 44 position, the air gap between rotor 16 and stator 12 increases, and is formed.Preferably, the ratio of the width d1 of described teeth groove 42 and the width d2 of main air gap is greater than 0 and is less than 2, i.e. 0<d1/d2<2, to reduce cogging torque, makes motor smooth operation, reduces noise.The rotating shaft 17 of described rotor 16 is connected with impeller 12 by the openend of sealing shroud 18 is protruding, and impeller 12 is rotated.In the present embodiment, described sealing shroud 18 is connected with shell 13 one of impeller 12 at its openend, and both can be injection molded integrative-structures.
Please refer to Fig. 6 and Fig. 7, the diameter in the external diameter of described sealing shroud 18 and the polar arc face 36 of pole pawl 34, the diameter in the space 38 namely between pole pawl 34 is suitable, after magnetic core 20 and sealing shroud 18 are assembled, except deactivation groove 44 position place, the polar arc face 36 of pole pawl 34 is substantially very close to each other diametrically with the outside wall surface 46 of sealing shroud 18.The outside wall surface 46 of described sealing shroud 18 is at the openend near sealing shroud 18, and namely sealing shroud 18 is near the one end at impeller 12 place, radially protrudes and is formed with step 48.Described step 48 has larger external diameter relative to the remainder of the outside wall surface 46 of sealing shroud 18, is that is greater than the diameter in polar arc face 36.During assembling, move vertically relative to magnetic core 20 in the space 38 between the two poles of the earth pawl 34 that the blind end of sealing shroud 18 is inserted into magnetic core 20, until the end face 50 of the step 48 of sealing shroud 18 and magnetic core 20 are touched, form location in the axial direction.
For convenience of magnetic core 20 assembling with sealing shroud 18, the outside wall surface 46 of described sealing shroud 18 is formed with rib 52, and the teeth groove 42 between the position of described rib 52 and the pole pawl 34 of magnetic core 20 is corresponding, and the width of rib 52 and the width of teeth groove 42 are quite or smaller.During assembling, rib 52 is located with the teeth groove 42 of magnetic core 20 is corresponding in the axial direction, and rib 52 to be inserted in teeth groove 42 and to guide moving axially of sealing shroud 18 and magnetic core 20, makes sealing shroud 18 and stator 14 rapid-assembling, and ensures the coaxiality of stator 14 and rotor 16.Preferably, described rib 52 extends along the axis of sealing shroud 18, at least extends to the end face 50 with step 48 by the blind end of sealing shroud 18.In this enforcement, described rib 52 extends to the openend of sealing shroud 18, forms " ten " word crossing with step 48.Described step 48 forms depression 54 in the circumferential both sides of rib 52, and the end face 50 of step 48 is disconnected in the circumferential, for holding the chip formed in sealing shroud 18 and magnetic core 20 assembling process.
Preferably, the degree of depth that described depression 54 opposing steps 48 is recessed into diametrically is not less than step 48 thickness outwardly diametrically, and that is, the bottom surface diametrically of described depression 54 is relative to the outside wall surface 46 at least not evagination of sealing shroud 18.In the present embodiment, the bottom surface of described depression 54 and the outside wall surface 46 of sealing shroud 18 coplanar.So, at assembling magnetic core 20 with the process of sealing shroud 18, even if the outside wall surface 46 of magnetic core 20 pairs of sealing shrouds 18 causes scraping, particularly as the pole pawl 34 of magnetic core in the present embodiment 20 pole tip 40 between teeth groove 42 narrow, and the interior angle of the end of pole tip 40 is wedge angle, scraping is easily caused to form chip.Because the end face 50 of step 48 disconnects in the both sides of rib 52, chip is slipped into step 48 in the depression 54 that rib 52 both sides are formed along the outside wall surface 46 of sealing shroud 18, and can not be interposed between the end face 50 of step 48 and the pole pawl 34 of magnetic core 20, the symmetry of guarantee magnetic core 20 like this, it is made to keep coaxial with rotor 16, the smooth operation of rotor 16 energy, avoids the generation of noise as much as possible.
Figure 8 shows that another embodiment of the sealing shroud 18 of the motor 10 of the utility model liquid pump, its difference is: in the present embodiment, and the external diameter of the outside wall surface 46 of described sealing shroud 18 is slightly less than the diameter in the polar arc face 36 of pole pawl 34.The outside wall surface 46 of described sealing shroud 18 is formed with multiple rib 52, for guiding the assembling of magnetic core 20 with sealing shroud 18.Described rib 52 is circumferentially roughly arranged in uniform intervals, and each rib 52 extends to the end face 50 of step 48 vertically.As shown in Figure 9, during assembling, sealing shroud 18 inserts the space 38 extremely between pawl 34, and moves vertically.Because sealing shroud 18 external diameter is smaller, between the polar arc face 36 of pole pawl 34 and the outside wall surface 46 of sealing shroud 18 diametrically between be separated with little gap, the outside wall surface 46 of sealing shroud 18 does not contact with pole pawl 34, but the rib 52 in the outside wall surface 46 of sealing shroud 18 contacts with the polar arc face 36 of pole pawl 34, but rib 52 and the contact area opposing seal in polar arc face 36 overlap the outside wall surface 46 itself of 18, almost can ignore, the scraping therefore caused is limited, does not almost have chip to be formed.In addition, gap is formed between the polar arc face 36 of pole pawl 34 and the outside wall surface 46 of sealing shroud 18, formed chip can be held, similarly avoid sandwiched chip between pole pawl 34 and the end face 50 of step 48, ensure magnetic core 20 after assembling with the alignment of rotor 16, make rotor 16 be able to smooth operation, reduce the generation of noise.
It should be noted that; the utility model is not limited to above-mentioned execution mode; according to creative spirit of the present utility model; those skilled in the art can also make other changes; these changes done according to creative spirit of the present utility model, all should be included within the utility model scope required for protection.
Claims (17)
1. a motor, the sealing shroud comprising stator, rotor and be formed between stator and rotor, described sealing shroud is plugged in stator, described rotor is contained in sealing shroud rotationally, it is characterized in that: the outside wall surface of described sealing shroud is radially protruded and is formed with step, the end face of described stator and step offsets to withstand on and axially locates, the outside wall surface of described sealing shroud is also formed with the rib extended vertically, described rib at least extends to the end face of step, for guiding sealing shroud and the moving to axial of stator when assembling.
2. motor as claimed in claim 1, it is characterized in that, the circuit board that described stator comprises U-shaped magnetic core, is wound in the coil on magnetic core and is connected with coil, described magnetic core is formed with a pair pole pawl, described pole pawl is sheathed in the outside wall surface of sealing shroud, and the internal face indent of pole pawl forms the polar arc face of surrounding rotor.
3. motor as claimed in claim 2, it is characterized in that, the outside wall surface of described polar arc face and sealing shroud is affixed, and the rib on sealing shroud inserts in the teeth groove extremely between pawl.
4. motor as claimed in claim 3, is characterized in that, described step forms depression in the circumferential both sides of rib, and described depression makes the end face of step disconnect in the circumferential.
5. motor as claimed in claim 2, it is characterized in that, the diameter in described polar arc face is greater than the external diameter of the outside wall surface of sealing shroud, and separately diametrically, described rib and polar arc face are affixed the outside wall surface of polar arc face and sealing shroud.
6. motor as claimed in claim 5, it is characterized in that, described rib is multiple, and the circumferential uniform intervals along sealing shroud is arranged.
7. motor as claimed in claim 2, is characterized in that, described polar arc face is formed with startup groove.
8. motor as claimed in claim 2, it is characterized in that, be formed with teeth groove between the end that described a pair pole pawl is corresponding, be formed with air gap between the outside wall surface of described rotor and the polar arc face of stator, the ratio of the width of described teeth groove and the width of air gap is greater than 0 and is less than 2.
9. motor as claimed in claim 2, it is characterized in that, be formed with teeth groove between the end that described a pair pole pawl is corresponding, the end face of the end of each pole pawl is crossing with polar arc face forms wedge angle.
10. motor as claimed in claim 9, is characterized in that, the end face of the end of each pole pawl and polar arc face intersect vertically the wedge angle of formation 90 degree.
11. motors as claimed in claim 2, it is characterized in that, described motor is electric machine, and the rotor of motor is p-m rotor.
12. 1 kinds of motors, comprise stator and can relative stator rotate rotor, described stator and rotor be one of them winding comprising magnetic core and be wound in magnetic core at least, described magnetic core is installed and is positioned to a matrix, described matrix having depression, installing in described magnetic core and matrix process because both relative movements cause rubbing against one another and chip that is that produce for holding.
13. motors as claimed in claim 12, it is characterized in that, described matrix is located between stators and rotators diametrically.
14. motors as claimed in claim 12, it is characterized in that, described matrix has the axial end of locating described magnetic core, and the both sides of described axial end are located at by described depression and described magnetic core.
15. motors as claimed in claim 14, it is characterized in that, described matrix establishes axially extended rib, for guiding the relative movement of described magnetic core and matrix, described rib is crossing with described axial end, and described depression comprises two, is divided into the circumferential both sides of described rib.
16. 1 kinds of liquid pumps, comprise motor and by motor-driven impeller, it is characterized in that: described motor is connected on rotor with rotor synchronous axial system for the motor described in any one of claim 1-15, described impeller.
17. liquid pumps as claimed in claim 16, it is characterized in that, described sealing shroud is the cylindrical structure that one end open is closed in one end, described impeller is arranged at the openend of sealing shroud, the openend of described sealing shroud is connected with the shell one of impeller, described step near sealing shroud openend and away from blind end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520672323.5U CN204992818U (en) | 2015-08-31 | 2015-08-31 | Liquid pump and driving motor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520672323.5U CN204992818U (en) | 2015-08-31 | 2015-08-31 | Liquid pump and driving motor thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204992818U true CN204992818U (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520672323.5U Expired - Fee Related CN204992818U (en) | 2015-08-31 | 2015-08-31 | Liquid pump and driving motor thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204992818U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487123A (en) * | 2015-08-31 | 2017-03-08 | 德昌电机(深圳)有限公司 | Liquid pump and its motor |
| CN107240969A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | motor and its stator |
| CN107240991A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | The assemble method for connecing winding method and stator of machine winding |
| CN107240967A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | motor and its stator |
| CN108496298A (en) * | 2017-04-28 | 2018-09-04 | 深圳市大疆创新科技有限公司 | Driving device, laser measuring device for measuring and mobile platform |
-
2015
- 2015-08-31 CN CN201520672323.5U patent/CN204992818U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487123A (en) * | 2015-08-31 | 2017-03-08 | 德昌电机(深圳)有限公司 | Liquid pump and its motor |
| CN106487123B (en) * | 2015-08-31 | 2024-04-09 | 德昌电机(深圳)有限公司 | Liquid pump and driving motor thereof |
| CN107240969A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | motor and its stator |
| CN107240991A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | The assemble method for connecing winding method and stator of machine winding |
| CN107240967A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | motor and its stator |
| CN108496298A (en) * | 2017-04-28 | 2018-09-04 | 深圳市大疆创新科技有限公司 | Driving device, laser measuring device for measuring and mobile platform |
| CN108496298B (en) * | 2017-04-28 | 2020-04-17 | 深圳市大疆创新科技有限公司 | Driving device, laser measuring device and mobile platform |
| US11469655B2 (en) | 2017-04-28 | 2022-10-11 | SZ DJI Technology Co., Ltd. | Driving device, laser measurement device and movable platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |