CN102454641A - Pump device - Google Patents
Pump device Download PDFInfo
- Publication number
- CN102454641A CN102454641A CN2011103214136A CN201110321413A CN102454641A CN 102454641 A CN102454641 A CN 102454641A CN 2011103214136 A CN2011103214136 A CN 2011103214136A CN 201110321413 A CN201110321413 A CN 201110321413A CN 102454641 A CN102454641 A CN 102454641A
- Authority
- CN
- China
- Prior art keywords
- stator
- insulation division
- pump
- wall member
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920005989 resin Polymers 0.000 claims abstract description 50
- 239000011347 resin Substances 0.000 claims abstract description 50
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000009413 insulation Methods 0.000 claims description 95
- 238000005192 partition Methods 0.000 claims description 27
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 24
- 239000012530 fluid Substances 0.000 claims description 19
- 238000002347 injection Methods 0.000 claims description 18
- 239000007924 injection Substances 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 17
- 229920005992 thermoplastic resin Polymers 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000000465 moulding Methods 0.000 description 4
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000003872 anastomosis Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/064—Details of the magnetic circuit
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a pump device, which can prevent the relative position offset of a stator relative to a dividing wall member during the injection molding of resin members used for covering the stator. The dividing wall member is provided with a dividing wall arranged between the stator and a pump chamber. The pump device (1) comprises a rotor (4) with an impeller (2); a stator (5) provided with a drive coil (23), an insulating member (25) and a stator iron core (24); a pump chamber (9); and a dividing wall member (28) of a dividing wall (28a) arranged between the stator (5) and the pump chamber (9). The stator iron core (24) is provided with a plurality of convex pole parts wound with the drive coil (23) through the insulating member (25) arranged therebetween. The dividing wall (28a) is substantially in a bottomed cylindrical shape and consists of a cylindrical part (28c), a bottom part (28d) and a flange part (28e). The insulating member (25) is formed with a butting part (25d) abutting against the flange part (28e). At least one part of the butting part (25d) is fixed to the flange part (28e).
Description
Technical field
The present invention relates to a kind of pump-unit that disposes partition, the anti-fluid of this partition flows between the configuration position of the pump chamber that disposes impeller and rotor and stator.
Background technique
At present, known have a kind of pump-unit that disposes dividing plate (partition), and the anti-fluid of this partition flows between the configuration position of the pump chamber that disposes impeller and rotor and stator and substrate (for example with reference to patent documentation 1).In the pump-unit that patent documentation 1 is put down in writing, dispose the driving that constitutes rotor in interior all sides of the drum portion that constitutes dividing plate and use magnet, dispose stator at the outer circumferential side of drum portion.
In addition, in the pump-unit that patent documentation 1 is put down in writing, for anti-fluid immerses stator and substrate, stator and substrate are covered by moulding resin.This moulding resin forms through injection molded.Particularly, be disposed in the mould, and inject resin material in this mould and this resin material is solidified, thereby form resin component element with the pressure of regulation through the dividing plate that will dispose stator and substrate at the outer circumferential side of drum portion.
Patent documentation 1: Japanese Patent Laid is opened the 2008-75462 communique
As stated; In the pump-unit that patent documentation 1 is put down in writing; Dividing plate through disposing stator at the outer circumferential side of drum portion is disposed in the mould, and injects resin material in this mould and this resin material is solidified with the pressure of regulation, forms moulding resin with injection molded.Therefore, because of possibly making the stator that is disposed at drum portion outer circumferential side, the pressure of the resin material that when moulding resin is carried out injection molded, injects produces skew with respect to the relative position of dividing plate.
Summary of the invention
Therefore; Technical problem of the present invention is to provide a kind of pump-unit; Its relative position with respect to a wall member that prevents stator in the time of carrying out injection molded at the resin component element to covering stator etc. produces skew, and wherein, a wall member is formed with the partition that is disposed between stator and the pump chamber.
For solving the problems of the technologies described above, the characteristic of pump-unit of the present invention is to comprise: impeller; Rotor, mounted impeller on this rotor; Stator; This stator arrangement is in the outer circumferential side of rotor; And have driving with coil, insulating component and stator core, wherein, above-mentioned insulating component is made up of the insulating properties material; On the said stator iron core, be formed with a plurality of prominent utmost point portion, in this a plurality of prominent utmost point portion, be wound with to drive and use coil across insulating component; Pump chamber disposes impeller and rotor in this pump chamber, and fluid flows through this pump chamber; An and wall member; This wall member has partition, and this partition is disposed between stator and the pump chamber to prevent that the fluid in the pump chamber from flowing into the configuration position of stator, and partition forms roughly has the round-ended cylinder shape; Have bottom, cylindrical part and lip part; Lip part forms with the mode that enlarges towards the radial outside of cylindrical part from the opening side end of cylindrical part, on insulating component, is formed with the abutting part with the lip part butt, and at least a portion of abutting part is fixed in lip part.
In pump-unit of the present invention, on the insulating component that constitutes stator, be formed with and constitute the abutting part of the lip part butt of partition, at least a portion of this abutting part is fixed in lip part.That is, in the present invention, stator is fixed in a wall member.Therefore, in the present invention, when the resin component element to covering stator etc. carries out injection molded,, can prevent that also the relative position with respect to a wall member of stator from producing skew even if on stator, be applied with the pressure of regulation.Particularly; In pump-unit of the present invention; Can adopt following structure: impeller and the motor configurations with rotor and stator are in the inside of the housing that constitutes by shell with the upper shell that the top of this shell covers; On upper shell, be formed with the suction portion and the discharge portion of fluid, between shell and upper shell, be formed with pump chamber, the fluid that sucks from suction portion flows towards discharge portion through this pump chamber.In this case; Can adopt following structure: shell comprises a wall member and resinous resin component element, and wherein, above-mentioned wall member has partition; This partition is disposed between pump chamber and the stator with the mode that pump chamber and stator are separated; Above-mentioned resin component element is disposed at the outside of a wall member with the mode that stator is covered, comparatively it is desirable to, resin component element be through resin material is injected be in the state that is fixed with said stator between wall member and this hardening of resin is constituted.
In the present invention, for example, insulating component comprises: the inboard insulation division that is disposed at the radially inner side of stator core; Be disposed at the outside insulation division of the radial outside of stator core; And be connected insulation division with what inboard insulation division and outside insulation division linked together, and drive and be wound in the connection insulation division with coil, on inboard insulation division and/or outside insulation division, be formed with abutting part, inboard insulation division and/or outside insulation division are fixed in lip part.In this case, comparatively it is desirable to, on inboard insulation division and outside insulation division, be formed with abutting part, inboard insulation division and outside insulation division are fixed in lip part.When such formation,, therefore can improve the constant intensity with respect to a wall member of stator because stator is fixed in a wall member in the radially inner side and the outside of stator core.Therefore, can prevent effectively that the relative position with respect to a wall member of stator produces skew when the resin component element to covering stator etc. carries out injection molded.
In the present invention; Comparatively it is desirable to; Stator core is made up of a plurality of iron cores of cutting apart that partly cut according to the prominent utmost point; Stator comprises the identical insulating component of quantity that is installed on each prominent utmost point portion and quantity and prominent utmost point portion, on a plurality of insulating components, is formed with abutting part respectively, and a plurality of insulating components are individually fixed in lip part.When such formation,, also can a plurality of iron cores of cutting apart be individually fixed in a wall member through insulating component even cut apart under the situation that iron core constitutes by a plurality of in stator core.Therefore, even if cut apart under the situation that iron core constitutes by a plurality of, can prevent that also the relative position with respect to a wall member of stator when the resin component element to covering stator etc. carries out injection molded from producing skew in stator core.
In the present invention; Comparatively it is desirable to; Stator core is made up of a plurality of iron cores of cutting apart that partly cut according to the prominent utmost point; Between wall member comprise periphery wall roughly cylindraceous portion, this periphery wall portion is disposed at the outer circumferential side of cylindrical part and erects towards bottom side from lip part, stator remains between cylindrical part and the periphery wall portion.When such formation, even if cut apart under the situation that iron core constitutes by a plurality of in stator core, also can utilize periphery wall portion make a plurality of cut apart iron core integrated.That is, can be used to prevent fluid in the pump chamber flow into stator the configuration position between wall member make a plurality of cut apart iron core integrated.Therefore, even cut apart under the situation that iron core constitutes by a plurality of, also can simplify the structure of pump-unit in stator core.
In the present invention, comparatively it is desirable to, the outer circumferential face of stator core contacts with the inner peripheral surface of periphery wall portion with the contact pressure of a certain setting.That is, comparatively it is desirable to, stator core is pressed into periphery wall portion.When such formation, can improve the constant intensity with respect to a wall member of stator.Therefore, can prevent effectively that the relative position with respect to a wall member of stator produces skew when the resin component element to covering stator etc. carries out injection molded.In addition, when such formation, for example, can a plurality ofly cut apart interior all sides that iron core is pressed into periphery wall portion and make and a plurality ofly cut apart iron core integrated and a plurality of iron cores of cutting apart are fixed in a wall member through what will be in assembled state.Therefore, can simplify the assembling operation of pump-unit.
Under situation about constituting like this,, comparatively it is desirable to improve the contact pressure between the inner peripheral surface of outer circumferential face and periphery wall portion of stator core in order to improve the constant intensity with respect to a wall member of stator.On the other hand, when the contact pressure between the inner peripheral surface of the outer circumferential face of stator core and periphery wall portion is too high, be difficult for carrying out stator core outwardly surrounding wall portion be pressed into operation.In the present invention; Because the insulating component that constitutes stator is fixed in the lip part of wall member between formation, therefore need not excessively to increase the contact pressure between the inner peripheral surface of outer circumferential face and periphery wall portion of stator core for the constant intensity that improves stator with respect to a wall member.Promptly; In the present invention; With under the contact pressure of regulation and the situation that the inner peripheral surface of periphery wall portion contacts,, also can guarantee the constant intensity with respect to a wall member of stator at the outer circumferential face of stator core even if reduce the contact pressure of inner peripheral surface of outer circumferential face and the periphery wall portion of stator core.Therefore, can reduce the contact pressure between the inner peripheral surface of outer circumferential face and periphery wall portion of stator core, and can easily carry out stator core outwardly surrounding wall portion be pressed into operation.
In the present invention, comparatively it is desirable to, at least a portion of abutting part is fixed in lip part through ultrasonic welding.Particularly; Between wall member and insulating component form by thermoplastic resin material; Can be fixed together through at least a portion and the lip part of ultrasonic welding abutting part; In this case, on abutting part and lip part, be formed with the recess and the protuberance that fasten each other, recess is fixed on through ultrasonic welding with protuberance.When such formation, even be formed with on the wall member under the situation of periphery wall portion, on the face of that can make also that vibratory horn (vibration horn) is connected to lip part and the opposite side of face abutting part institute butt and insulating component is fixed in lip part.Therefore, can easily carry out the fixed operation of insulating component towards lip part.
In the present invention, comparatively it is desirable to, an insulating component and a wall member are formed by identical materials, and at least a portion of abutting part is fixed in lip part through ultrasonic welding.When such formation, through ultrasonic welding insulating component is fixed in lip part easily.Therefore, can easily carry out the fixed operation of insulating component towards lip part.In addition, can reliably insulating component be fixed in lip part.
As stated, in pump-unit of the present invention, can prevent effectively that the relative position with respect to a wall member of stator produces skew when the resin component element to covering stator etc. carries out injection molded.
Description of drawings
Fig. 1 is the sectional view of the pump-unit of embodiment of the present invention.
Fig. 2 is the exploded perspective view of the state after stator shown in Figure 1, a wall member are decomposed in expression.
Fig. 3 is illustrated in shown in Figure 2 cutting apart to be wound with the stereogram that drives with the state of coil on the iron core.
Fig. 4 is the stereogram unshakable in one's determination of cutting apart shown in Figure 3.
Fig. 5 is fixed with the sectional view of the state of stator between shown in Figure 2 on the wall member.
Fig. 6 is the E portion enlarged view of Fig. 5.
(symbol description)
1 pump-unit
2 impellers
4 rotors
5 stators
9 pump chambers
Coil is used in 23 drivings
24 stator cores
The 24b utmost point portion of dashing forward
24c is cut apart iron core
25 insulating components
The inboard insulation division of 25a
25b outside insulation division
25c connects insulation division
The 25d abutting part
28 wall members
The 28a partition
28b periphery wall portion
The 28c cylindrical part
The 28d bottom
The 28e lip part
Embodiment
Below, with reference to accompanying drawing mode of execution of the present invention is described.
(schematic construction of pump-unit)
Fig. 1 is the sectional view of the pump-unit 1 of embodiment of the present invention.In following explanation, the upside (Z1 direction side) of Fig. 1 is made as " on " side, the downside (Z2 direction side) of Fig. 1 is made as the D score side.
The pump-unit 1 of this mode of execution is the pump that is called as the canned pump formula, comprises impeller 2 and the DC Brushless Motor 3 that makes these impeller 2 rotations (below be called " motor 3 ").Motor 3 is made up of rotor 4 and stator 5.Impeller 2 and motor 3 are disposed at the inside of the housing that is made up of shell 6 and upper shell 7 that the top of shell 6 is covered.Shell 6 is fixed to one another by screw 8 with upper shell 7.
On upper shell 7, be formed with the 7a of suction portion of fluid and the 7b of discharge portion of fluid.Between shell 6 and upper shell 7, be formed with pump chamber 9, the fluid that sucks from the 7a of suction portion flows towards the 7b of discharge portion through pump chamber 9.In addition, the anastomosis part between shell 6 and upper shell 7 disposes the sealing component (O shape ring) 10 of the sealing that is used to guarantee pump chamber 9.
Rotor 4 comprises: drive the retaining member 16 that keeps with magnet 14 and sleeve 15 with magnet 14, sleeve cylindraceous 15, to driving.Retaining member 16 forms flanged roughly cylindric.Drive the outer circumferential side that is fixed in retaining member 16 with magnet 14, sleeve 15 is fixed in interior all sides of retaining member 16.On the lip part 16a of the retaining member that is disposed at upside 16, be fixed with impeller 2.Impeller 2 and rotor 4 are disposed at the inside of pump chamber 9.
Rotor 4 axle that is fixed 17 is supported to and can rotates.Stationary axle 17 with above-below direction as axially the configuration.That is, above-below direction is the axial of rotor 4.The upper end of stationary axle 17 remains in upper shell 7, and the lower end of stationary axle 17 remains in shell 6.Stationary axle 17 inserts interior all sides of sleeve 15.In addition, on stationary axle 17, two thrust-bearing members 18 are installed with the mode of clamping sleeve 15 along the vertical direction.In this mode of execution, sleeve 15 works as the radial bearing of rotor 4, and sleeve 15 and thrust-bearing member 18 work as the thrust-bearing of rotor 4.
In addition, pump-unit 1 comprises and is used for driving the magnetic quantity transducer 20 (with reference to Fig. 2) that the magnetic pole with magnet 14 outer circumferential faces detects to being formed at.
(structure of stator)
Fig. 2 is the exploded perspective view of the state after stator shown in Figure 15, a wall member 28 etc. are decomposed in expression.Fig. 3 is wound with the stereogram that drives with the state of coil 23 in shown in Figure 2 cutting apart on the 24c unshakable in one's determination.Fig. 4 is a stereogram of cutting apart 24c unshakable in one's determination shown in Figure 3.
Stator core 24 is the range upon range of and laminate cores that form of the thin magnetic sheet that is made up of magnetic material.This stator core 24 comprises: the roughly circular 24a of annulus portion that constitutes the outer circumferential face of stator core 24; And a plurality of prominent utmost point 24b of portion that gives prominence to from the 24a of annulus portion towards radially inner side.In addition, stator core 24 is a plurality ofly cut apart 24c unshakable in one's determination and is constituted by what cut apart according to the prominent 24b of utmost point portion.The stator core 24 of this mode of execution is cut apart 24c unshakable in one's determination by six and is constituted.
As shown in Figure 4, cut apart 24c unshakable in one's determination and constitute by prominent 24b of utmost point portion and the peripheral part 24d that constitutes the part of the 24a of annulus portion.Peripheral part 24d forms roughly circular-arc.The prominent 24b of utmost point portion is made up of with the joint 24f that peripheral part 24d links together the promptly prominent utmost point front end 24e of the front end of the prominent 24b of utmost point portion and the utmost point front end 24e that will dash forward, when when above-below direction is observed, and the roughly T shape that is shaped as of the 24b of utmost point portion that dashes forward.The inner peripheral surface of prominent utmost point front end 24e across after state partition 28a and with drive relative with the outer circumferential face of magnet 14.
Insulating component 25 is formed by thermoplastic resin material.In addition, insulating component 25 is with to cut apart 24c unshakable in one's determination one-body molded.That is, stator 5 comprises the insulating component 25 that quantity is identical with the quantity of the prominent utmost point 24b of portion, and insulating component 25 is installed on each and cuts apart on the 24c unshakable in one's determination.This insulating component 25 for prevent to drive with coil 23 with cut apart will dash forward outer circumferential side, the joint 24f of utmost point front end 24e, interior all sides of peripheral part 24d of contacting of 24c unshakable in one's determination and cover.In addition; Like Fig. 1, shown in Figure 3; Insulating component 25 is made up of inboard insulation division 25a, outside insulation division 25b, connection insulation division 25c, and wherein, above-mentioned inboard insulation division 25a is disposed at radially inner side; Above-mentioned outside insulation division 25b is disposed at radial outside, and above-mentioned connection insulation division 25c links together inboard insulation division 25a and outside insulation division 25b.
When above-below direction was observed, being shaped as of inboard insulation division 25a was roughly circular-arc.In addition, inboard insulation division 25a extends towards the both sides on the above-below direction from the utmost point front end 24e that dashes forward.Inboard insulation division 25a will cover except the inner peripheral surface of prominent utmost point front end 24e and other part of the prominent utmost point front end 24e the both end sides on the circumferencial direction.
When above-below direction was observed, being shaped as of outside insulation division 25b was roughly circular-arc.In addition, extend the both sides of insulation division 25b in the outside on from peripheral part 24d towards above-below direction.Outside insulation division 25b is with the inner peripheral surface of peripheral part 24d and the part covering of both ends of the surface up and down.
Be in to be wound with to drive and cut apart 24c unshakable in one's determination, and state interior all sides of the 28b of periphery wall portion after being fixed in so that the end face mode against each other of adjacent in a circumferential direction peripheral part 24d is combined into roughly cylindricly with the state of coil 23 a plurality of.At this moment, be formed with the gap between the end face of adjacent in a circumferential direction prominent utmost point front end 24e, in addition, also be formed with the gap between the end face of adjacent in a circumferential direction inboard insulation division 25a.
(structure of shell)
Fig. 5 is fixed with the sectional view of the state of stator 5 between shown in Figure 2 on the wall member 28.Fig. 6 is the E portion enlarged view of Fig. 5.
As shown in Figure 1; Shell 6 comprises a wall member 28 and resinous resin component element 29; Wherein, Above-mentioned wall member 28 has partition 28a, and this partition 28a is disposed between pump chamber 9 and the stator 5 with the mode that pump chamber 9 and stator 5 are separated, above-mentioned resin component element 29 will between the lower surface and the side of wall member 28 cover.
Between wall member 28 form by thermoplastic resin.In this mode of execution, a wall member 28 is formed by the resin material identical with the material of insulating component 25.For example, a wall member 28 and insulating component 25 are formed by PPO (PPE) or polyphenylene sulfide resin materials such as (PPS).In addition, except partition 28a, a wall member 28 also comprises the periphery wall 28b of portion roughly cylindraceous of the outer circumferential side that is disposed at partition 28a.
In the bottom lower surface of 28d be formed be used for substrate 30 be fixed in a wall member 28 fixing with projection 28f be used for projection 28g is used in the location that substrate 30 positions.As shown in Figure 1, substrate 30 is threaded into the lower face side that fixing screw 31 with projection 28f is fixed on bottom 28d under being fixed with projection 28f and the location state with projection 28g location.On substrate 30, be connected with the terminal of magnetic quantity transducer 20.In addition, on substrate 30, be connected with terminal pins 26,30 courts drive with coil 23 supplying electric currents from substrate.In this mode of execution, after stator 5 was fixed in a wall member 28, the substrate 30 that will be in the state that magnetic quantity transducer 20 is installed was fixed in bottom 28d.
As shown in Figure 2, be formed with towards radial outside outstanding a plurality of protuberance 28h, 28j at the outer circumferential face of cylindrical part 28c.In this mode of execution, six protuberance 28h, 28j form with the equal angles spacing.Protuberance 28h, 28j form at upper and lower upwardly extending elongated rectangular-shaped.Length on the above-below direction of three protuberance 28h among six protuberance 28h, the 28j is longer than the length on the above-below direction of remaining three protuberance 28j.Particularly, protuberance 28h is formed at from the whole zone of upper end to the lower end of cylindrical part 28c.On the other hand, protuberance 28j forms from the upper end of cylindrical part 28c, but is not formed up to the lower end of cylindrical part 28c.
The 28b of periphery wall portion forms roughly cylindric, is disposed at the outer circumferential side of cylindrical part 28c.28b is edge-on down from lip part 28e in this periphery wall portion.The height of the 28b of periphery wall portion (length on the above-below direction) is lower than the height of cylindrical part 28c.The internal diameter of the 28b of periphery wall portion is bigger than the external diameter of cylindrical part 28c, disposes stator 5 between the outer circumferential face of the inner peripheral surface of surrounding wall portion 28b and cylindrical part 28c outside.
The internal diameter of the 28b of periphery wall portion is littler than the external diameter of the 24a of annulus portion of stator core 24.In this mode of execution; Cut apart 24c unshakable in one's determination with the state of coil 23 a plurality of and be pressed into interior all sides of the 28b of periphery wall portion through being in to be wound with to drive to be combined into state roughly cylindraceous; Thereby to cut apart 24c unshakable in one's determination integrated with a plurality of; And making stator 5 be fixed in a wall member 28, the outer circumferential face of stator core 24 contacts with the inner peripheral surface of the 28b of periphery wall portion with the contact pressure of regulation.
Interior all side pressures of surrounding wall portion 28b outside go into to have under the state of stator 5, and are as shown in Figure 5, the lower surface butt of the upper end of insulating component 25 and lip part 28e.Particularly, the upper end of the upper end of inboard insulation division 25a and outside insulation division 25b and the lower surface butt of lip part 28e.In addition, at least a portion of the upper end of the upper end of inboard insulation division 25a and outside insulation division 25b is fixed in the lower surface of lip part 28e.The upper end of the upper end of the inboard insulation division 25a of this mode of execution and outside insulation division 25b becomes the abutting part 25d with lip part 28e butt, and at least a portion of this abutting part 25d is fixed in lip part 28e.
In this mode of execution, at least a portion of abutting part 25d is fixed in the lower surface of lip part 28e through ultrasonic welding.In the time will all or part of of abutting part 25d being fixed in the lower surface of lip part 28e; Under the state of the lower surface butt that makes abutting part 25d and lip part 28; Make the upper surface butt of vibratory horn and lip part 28e, and weld together through the lower surface of ultrasonic welding with all or part of and the lip part 28e of abutting part 25d.
As shown in Figure 6; For example be formed with the recess 25e that the cross section is general triangular by the abutting part 25d (being the upper end of inboard insulation division 25a and the upper end of outside insulation division 25b) before the ultrasonic welding; Be formed with the protuberance 28n that the cross section that engages with recess 25e is general triangular by the lower surface of the lip part 28e before the ultrasonic welding, welding together as the lower surface of center all or part of and the lip part 28e of abutting part 25d with recess 25e and protuberance 28n.At this, recess 25e both can be formed at the whole zone in a circumferential direction of abutting part 25d, also can be formed at the part in a circumferential direction of abutting part.But, on a plurality of insulating components 25, be formed with at least one recess 25e respectively.That is, be formed with a recess 25e at least to a prominent utmost point 24b of portion (cutting apart 24c unshakable in one's determination) to one.No matter be to be formed with the situation of recess 25e or the situation that the part on the circumferencial direction of abutting part 25d is formed with recess 25e in the whole zone on the circumferencial direction of abutting part 25d, protuberance 28n all is formed in the corresponding scope of formation scope with recess 25e.In Fig. 6; Be formed with the recess 25e that the cross section is general triangular at abutting part 25d; And be formed with at the lower surface of lip part 28e and engage with recess 25e and the cross section is the protuberance 28n of general triangular; But also can form the protuberance of general triangular in abutting part 25d side, and form the recess that engages with protuberance at the lower surface of lip part 28e.In addition, the shape of raised part and recess is not limited in the shape that the cross section is general triangular, the shape that can use in the form of a substantially rectangular shape of cross section, shape of cross section semicircular in shape etc. to engage with each other.
When stator 5 was fixed in wall member 28, protuberance 28h, 28j were configured between the end face of the adjacent inboard insulation division 25a in formed gap and circumferencial direction between the end face of the adjacent prominent utmost point front end 24e of circumferencial direction in the formed gap.Protuberance 28h, 28j can with the end face butt in a circumferential direction of prominent utmost point front end 24e, prevent the function of stator 5 thereby play with respect to a wall member 28 rotations.
The motor 1 of this mode of execution is a three-phase brushless motor, comprises three magnetic quantity transducers 20.In motor 1, control with the electric current of coil 23 being supplied to drive according to the testing result of magnetic quantity transducer 20.Magnetic quantity transducer 20 is disposed at the downside of protuberance 28j.In addition, magnetic quantity transducer 20 is disposed between the end face of the adjacent inboard insulation division 25a of circumferencial direction in the formed gap.
Resin component element 29 covers fully and drives with coil 23 and substrate 30 etc., be for the protection driving with coil 23 and substrate 30 etc. in order to avoid receive the influence of fluid and be provided with.This resin component element 29 be through resin material is injected to be in the state that is fixed with stator 5 and substrate 30 between wall member 28 form.Particularly, through will be in the state that is fixed with stator 5 and substrate 30 between wall member 28 be disposed in the mould, and inject resin material in this mould and this resin material solidified, thereby form resin component element 29 with the pressure of regulation.That is, resin component element 29 and fix stator 5 and substrate 30 after between wall member 28 one-body molded.In this mode of execution, resin component element 29 forms roughly has the round-ended cylinder shape, will be except the upper surface of lip part 28e and side between the underpart and the substrate 30 of wall member 28, stator 5 cover fully.
(the main effect of this mode of execution)
As stated; In this mode of execution; On a wall member 28, be formed with the 28b of periphery wall portion; Cut apart 24c unshakable in one's determination with the state of coil 23 a plurality of and be pressed into interior all sides of the 28b of periphery wall portion to be combined into state roughly cylindraceous through being in to be wound with to drive, to cut apart 24c unshakable in one's determination integrated thereby make.That is, in this mode of execution, be used to prevent fluids in the pump chamber 9 flow into stator 5 the configuration position between wall member 28, make that a plurality of to cut apart 24c unshakable in one's determination integrated.Therefore, in this mode of execution,, also need not to be provided for separately making and a plurality ofly cut apart the incorporate member of 24c unshakable in one's determination, thereby can simplify the structure of pump-unit 1 even if cut apart under the situation that 24c unshakable in one's determination constitutes by a plurality of in stator core 24.
In addition; In this mode of execution; Through cutting apart 24c unshakable in one's determination and be pushed down into interior all sides of the 28b of periphery wall portion being combined into state roughly cylindraceous with a plurality of; Make that to cut apart 24c unshakable in one's determination integrated and will cut apart 24c unshakable in one's determination and be fixed in a wall member 28, therefore, can easily carry out stator core 24 towards between the fixed operation of wall member 28.In addition, stator core 24 is pressed into interior all sides of the 28b of periphery wall portion, and the outer circumferential face of stator core 24 contacts with the contact pressure of stipulating with the inner peripheral surface of the 28b of periphery wall portion, therefore, can improve the constant intensity with respect to a wall member 28 of stator 5.Therefore, in this mode of execution, when resin component element 29 is carried out injection molded,, can prevent that also the relative position with respect to a wall member 28 of stator 5 from producing skew even on the stator that is fixed in a wall member 28 5, be applied with pressure.
At this; In order to prevent that the relative position with respect to a wall member 28 of stator 5 produces skew when resin component element 29 is carried out injection molded; Comparatively it is desirable to improve the contact pressure between the inner peripheral surface of outer circumferential face and the 28b of periphery wall portion of stator core 24, to improve the constant intensity with respect to a wall member 28 of stator 5.On the other hand, when the contact pressure between the inner peripheral surface of the outer circumferential face of stator core 24 and the 28b of periphery wall portion is too high, be difficult for carrying out stator core 24 outwardly surrounding wall portion 28b be pressed into operation.
But, in this mode of execution, at least a portion of the upper end of the inboard insulation division 25a of the insulating component 25 of formation stator 5 and the upper end of outside insulation division 25b is fixed in the lower surface of lip part 28e.Therefore, even reduce the contact pressure between the inner peripheral surface of outer circumferential face and the 28b of periphery wall portion of stator core 24, also can guarantee the constant intensity with respect to a wall member 28 of stator 5.That is, in this mode of execution, can reduce the contact pressure between the inner peripheral surface of outer circumferential face and the 28b of periphery wall portion of stator core 24, and can guarantee the constant intensity with respect to a wall member 28 of stator 5.Therefore, in this mode of execution, can prevent that the relative position with respect to a wall member 28 of stator 5 produces skew when resin component element 29 is carried out injection molded, and can easily carry out the operation that is pressed into of stator core 24.
In addition, in this mode of execution, at least a portion of the upper end of the upper end of the inboard insulation division 25a of insulating component 25 and outside insulation division 25b is fixed in the lower surface of lip part 28e, and stator 5 is fixed in a wall member 28 at radially inner side and radial outside.Therefore, can further improve the constant intensity with respect to a wall member 28 of stator 5.Therefore; In this mode of execution; Even if the contact pressure between the outer circumferential face of reduction stator core 24 and the inner peripheral surface of the 28b of periphery wall portion can prevent that also the relative position with respect to a wall member 28 of stator 5 produces skew when resin component element 29 is carried out injection molded.
In this mode of execution, on a plurality of insulating components 25, be formed with a recess 25e respectively at least, be formed with a recess 25e at least to a prominent utmost point 24b of portion (promptly cutting apart 24c unshakable in one's determination) to one.Therefore, even cut apart under the situation that 24c unshakable in one's determination constitutes by a plurality of, also can cut apart 24c unshakable in one's determination and be individually fixed in lip part 28e a plurality of through insulating component 25 in stator core 24.Therefore; In this mode of execution; Even if cut apart under the situation that 24c unshakable in one's determination constitutes by a plurality of in stator core 24; Also can further reduce the contact pressure between the inner peripheral surface of outer circumferential face and the 28b of periphery wall portion of stator core 24, and can prevent that the relative position with respect to a wall member 28 of stator 5 produces skew when resin component element 29 is carried out injection molded.
In this mode of execution,, at least a portion of the upper end of the upper end of inboard insulation division 25a and outside insulation division 25b is fixed in the lower surface of lip part 28e through ultrasonic welding.Therefore, even if be formed with on the wall member 28 under the situation of the 28b of periphery wall portion, also can make the upper surface butt of vibratory horn and lip part 28e, thereby insulating component 25 is fixed in lip part 28e.Therefore, in this mode of execution, can easily carry out the fixed operation of insulating component 25 towards lip part 28e.
In this mode of execution, insulating component 25 and a wall member 28 are formed by identical materials.Therefore, can easily insulating component 25 be fixed in lip part 28e through ultrasonic welding.Therefore, in this mode of execution, can easily carry out the fixed operation of insulating component 25 towards lip part 28e.In addition, in this mode of execution, can reliably insulating component 25 be fixed in lip part 28e.
(other mode of execution)
Above-mentioned mode of execution is the example in the preferred implementation of the present invention, but the present invention is not limited thereto, and can in the scope that does not change technological thought of the present invention, carry out various distortion and implement.
In the above-described embodiment, all or part of of the upper end of the upper end of inboard insulation division 25a and outside insulation division 25b is fixed in the lower surface of lip part 28e.In addition, for example also can only make all or part of of upper end of upper end or the outside insulation division 25b of inboard insulation division 25a be fixed in the lower surface of lip part 28e.In this case, owing to need not to make aiming at the upper end position on above-below direction of outside insulation division 25b of inboard insulation division 25a, therefore can easily form insulating component 25 at the upper end position on the above-below direction.In this case, in order to improve the constant intensity with respect to a wall member 28 of stator 5, comparatively it is desirable to, only all or part of of the upper end of outside insulation division 25b is fixed in the lower surface of lip part 28e.
In the above-described embodiment, stator core 24 is cut apart 24c unshakable in one's determination and is constituted by a plurality of.In addition, for example stator core 24 also can be unshakable in one's determination by integrally formed roughly circular 24a of annulus portion and the outstanding a plurality of prominent utmost point 24b of portion constitutes from the 24a of annulus portion towards radially inner side one.In this case, be wound on as the driving on the bobbin of insulating component and insert the prominent 24b of utmost point portion with bobbin from radially inner side, and be fixed in stator core 24 with coil 23.In addition, in this case, be formed at bobbin with the abutting part of lip part 28e butt, at least a portion of this abutting part is fixed in lip part 28e.
In the above-described embodiment, on a wall member 28, be formed with the 28b of periphery wall portion, but also can on a wall member 28, do not form the 28b of periphery wall portion.In this case, for example, a plurality of to cut apart the combination member that 24c unshakable in one's determination stipulated integrated.Even if in this case,, can prevent also that therefore the relative position with respect to a wall member 28 of stator 5 produces skew when resin component element 29 is carried out injection molded because insulating component 25 is fixed in lip part 28e (being that stator 5 is fixed in a wall member 28).In addition, even if be under the one situation unshakable in one's determination, can on a wall member 28, not form the 28b of periphery wall portion in stator core 24 yet.Even if in this case; As stated; Because the bobbin as insulating component is fixed in lip part 28e (being that stator 5 is fixed in a wall member 28), can prevent also that therefore the relative position with respect to a wall member 28 of stator 5 produces skew when resin component element 29 is carried out injection molded.
In the above-described embodiment, insulating component 25 is fixed in lip part 28e, but also can insulating component 25 be fixed in lip part 28e through bonding through ultrasonic welding.In addition, be fixed in lip part 28e in the upper end of outside insulation division 25b only and a wall member 28 is not formed with under the situation of the 28b of periphery wall portion, also can lip part 28e be fixed in the upper end of outside insulation division 25b through thermal weld.In addition, in the above-described embodiment, insulating component 25 is formed by identical resin material with a wall member 28, but insulating component 25 also can be formed by different resin materials with a wall member 28.
Claims (17)
1. a pump-unit is characterized in that, comprising:
Impeller;
Rotor is installed said impeller on this rotor;
Stator; This stator arrangement is in the outer circumferential side of said rotor; And have driving with coil, insulating component and stator core, wherein, said insulating component is made up of the insulating properties material; In said stator core, be formed with a plurality of prominent utmost point portion, in this a plurality of prominent utmost point portion, be wound with said driving and use coil across said insulating component;
Pump chamber in this pump chamber, dispose said impeller and said rotor, and fluid flows through this pump chamber; And
Between wall member, this wall member has partition, this partition is disposed between said stator and the said pump chamber preventing that the fluid in the said pump chamber from flowing into the configuration position of said stator,
Said partition forms roughly has the round-ended cylinder shape, has bottom, cylindrical part and lip part,
Said lip part forms with the mode that enlarges towards the radial outside of said cylindrical part from the opening side end of said cylindrical part,
On said insulating component, be formed with the abutting part with said lip part butt,
At least a portion of said abutting part is fixed in said lip part.
2. pump-unit as claimed in claim 1 is characterized in that,
Said insulating component comprises: the inboard insulation division that is disposed at the radially inner side of said stator core; Be disposed at the outside insulation division of the radial outside of said stator core; And be connected insulation division with what said inboard insulation division and said outside insulation division linked together,
Said driving is wound in said connection insulation division with coil,
On said inboard insulation division and/or said outside insulation division, be formed with said abutting part, said inboard insulation division and/or said outside insulation division are fixed in said lip part.
3. pump-unit as claimed in claim 2 is characterized in that,
On said inboard insulation division and said outside insulation division, be formed with said abutting part, said inboard insulation division and said outside insulation division are fixed in said lip part.
4. pump-unit as claimed in claim 2 is characterized in that,
Said wall member comprises periphery wall roughly cylindraceous portion, and this periphery wall portion is disposed at the outer circumferential side of said cylindrical part and erects from said lip part towards said bottom side,
Said stator remains between said cylindrical part and the said periphery wall portion.
5. pump-unit as claimed in claim 4 is characterized in that,
The outer circumferential face of said stator core contacts with the inner peripheral surface of a certain contact pressure with said periphery wall portion.
6. pump-unit as claimed in claim 2 is characterized in that,
At least a portion of said abutting part is fixed in said lip part through ultrasonic welding.
7. pump-unit as claimed in claim 1 is characterized in that,
Said stator core is made up of a plurality of iron cores of cutting apart that partly cut according to the said prominent utmost point,
Said stator comprises the identical said insulating component of quantity that is installed on each said prominent utmost point portion and quantity and said prominent utmost point portion,
On a plurality of said insulating components, be formed with said abutting part respectively, a plurality of said insulating components are individually fixed in said lip part.
8. pump-unit as claimed in claim 7 is characterized in that,
Said insulating component comprises: the inboard insulation division that is disposed at the radially inner side of said stator core; Be disposed at the outside insulation division of the radial outside of said stator core; And be connected insulation division with what said inboard insulation division and said outside insulation division linked together,
Said driving is wound in said connection insulation division with coil,
On said inboard insulation division and/or said outside insulation division, be formed with said abutting part, said inboard insulation division and/or said outside insulation division are fixed in said lip part.
9. like each described pump-unit in the claim 1 to 8, it is characterized in that,
Said insulating component and said wall member are formed by identical materials,
At least a portion of said abutting part is fixed in said lip part through ultrasonic welding.
10. pump-unit as claimed in claim 1 is characterized in that,
Said impeller and the motor configurations with said rotor and said stator be in the inside of the housing that constitutes by shell with the upper shell that the top of this shell covers,
On said upper shell, be formed with the suction portion of fluid and the discharge portion of fluid, between said shell and said upper shell, be formed with said pump chamber, the fluid that sucks from said suction portion is mobile towards said discharge portion through said pump chamber.
11. pump-unit as claimed in claim 10 is characterized in that,
Said shell comprises a wall member and resinous resin component element; Wherein, Said wall member has partition; This partition is disposed between said pump chamber and the said stator with the mode that said pump chamber and said stator are separated, and said resin component element is disposed at the outside of said wall member with the mode that said stator is covered.
12. pump-unit as claimed in claim 11 is characterized in that,
Said resin component element is to be in said wall member of the state that is fixed with said stator and this hardening of resin is formed through resin material is injected.
13. pump-unit as claimed in claim 12 is characterized in that,
Said wall member and said insulating component are formed by thermoplastic resin material, are fixed together through at least a portion and the said lip part of ultrasonic welding with said abutting part.
14. pump-unit as claimed in claim 13 is characterized in that,
On said abutting part and said lip part, be formed with the recess and the protuberance of engaging each other, said recess is fixed on through ultrasonic welding with said protuberance.
15. pump-unit as claimed in claim 12 is characterized in that,
Said insulating component comprises: the inboard insulation division that is disposed at the radially inner side of said stator core; Be disposed at the outside insulation division of the radial outside of said stator core; And be connected insulation division with what said inboard insulation division and said outside insulation division linked together,
Said driving is wound in said connection insulation division with coil,
On said inboard insulation division and/or said outside insulation division, be formed with said abutting part; Said inboard insulation division and/or said outside insulation division are fixed in said lip part; By this; When the said resin component element that covers said stator is carried out injection molded, prevent the relative position skew with respect to said wall member of said stator.
16. pump-unit as claimed in claim 12 is characterized in that,
Said stator core is made up of a plurality of iron cores of cutting apart that partly cut according to the said prominent utmost point,
Said stator comprises the identical said insulating component of quantity that is installed on each said prominent utmost point portion and quantity and said prominent utmost point portion,
On a plurality of said insulating components, be formed with said abutting part respectively; A plurality of said insulating components are individually fixed in said lip part; By this; When the said resin component element that covers said stator is carried out injection molded, prevent the relative position skew with respect to said wall member of said stator.
17. like each described pump-unit in the claim 10 to 16, it is characterized in that,
Said wall member comprises periphery wall roughly cylindraceous portion, and this periphery wall portion is disposed at the outer circumferential side of said cylindrical part and erects from said lip part towards said bottom side,
Said stator remains between said cylindrical part and the said periphery wall portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-240302 | 2010-10-27 | ||
| JP2010240302A JP5685414B2 (en) | 2010-10-27 | 2010-10-27 | Pump device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102454641A true CN102454641A (en) | 2012-05-16 |
| CN102454641B CN102454641B (en) | 2016-03-16 |
Family
ID=46038175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110321413.6A Expired - Fee Related CN102454641B (en) | 2010-10-27 | 2011-10-12 | Pump-unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5685414B2 (en) |
| CN (1) | CN102454641B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867484A (en) * | 2012-12-18 | 2014-06-18 | 日本电产三协株式会社 | Pump unit |
| CN106555766A (en) * | 2015-09-30 | 2017-04-05 | 日本电产三协株式会社 | Pump installation |
| CN107269546A (en) * | 2017-07-31 | 2017-10-20 | 广东威灵电机制造有限公司 | Electronic water pump |
| CN107476987A (en) * | 2017-07-31 | 2017-12-15 | 广东威灵电机制造有限公司 | Electronic water pump |
| CN108603326A (en) * | 2016-02-10 | 2018-09-28 | Bsh家用电器有限公司 | Washings care appliance with pump |
| CN111356841A (en) * | 2017-11-22 | 2020-06-30 | 尼得科Gpm有限公司 | Coolant pump with optimized use structure and improved thermal efficiency |
| CN114542479A (en) * | 2020-11-19 | 2022-05-27 | 日本电产三协株式会社 | Pump device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017015002A (en) * | 2015-07-01 | 2017-01-19 | 日本電産サンキョー株式会社 | Pump device |
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| EP0732794A1 (en) * | 1995-03-14 | 1996-09-18 | WILO GmbH | Stator fixation for a canned motor |
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Cited By (11)
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| CN103867484A (en) * | 2012-12-18 | 2014-06-18 | 日本电产三协株式会社 | Pump unit |
| CN106555766A (en) * | 2015-09-30 | 2017-04-05 | 日本电产三协株式会社 | Pump installation |
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| CN111356841A (en) * | 2017-11-22 | 2020-06-30 | 尼得科Gpm有限公司 | Coolant pump with optimized use structure and improved thermal efficiency |
| CN111356841B (en) * | 2017-11-22 | 2021-06-08 | 尼得科Gpm有限公司 | Coolant pump with optimized use structure and improved thermal efficiency |
| CN114542479A (en) * | 2020-11-19 | 2022-05-27 | 日本电产三协株式会社 | Pump device |
| CN114542479B (en) * | 2020-11-19 | 2024-03-08 | 日本电产三协株式会社 | Pump device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102454641B (en) | 2016-03-16 |
| JP5685414B2 (en) | 2015-03-18 |
| JP2012092736A (en) | 2012-05-17 |
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