CN104218739A - Washing pump for automobile windscreen wipers - Google Patents
Washing pump for automobile windscreen wipers Download PDFInfo
- Publication number
- CN104218739A CN104218739A CN201310215238.1A CN201310215238A CN104218739A CN 104218739 A CN104218739 A CN 104218739A CN 201310215238 A CN201310215238 A CN 201310215238A CN 104218739 A CN104218739 A CN 104218739A
- Authority
- CN
- China
- Prior art keywords
- circuit board
- thermistor
- washing pump
- brace
- brush
- 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.)
- Pending
Links
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
- 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
- F04D13/0693—Details or arrangements of the wiring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/02—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/14—Means for supporting or protecting brushes or brush holders
- H02K5/143—Means for supporting or protecting brushes or brush holders for cooperation with commutators
- H02K5/145—Fixedly supported brushes or brush holders, e.g. leaf or leaf-mounted brushes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
The invention provides a washing pump used for pumping water or detergent and matching with automobile windscreen wipers for cleaning windscreens. The washing pump comprises a pump casing, an impeller and a motor, the impeller is contained in the pump casing, the motor drives the impeller and comprises a stator, a rotor and an end cover component, the rotor is mounted to the stator, and the end cover component comprises an end cover, a plurality of electric brushes, a plurality of connection plates and a positive temperature coefficient thermistor. The electric brushes are fixed to the end cover, the connection plates are used for being connected to an external power source, and one of the connection plates is connected to one of the electric brushes through the thermistor. By the aid of the thermistor, resistance of the thermistor can be increased rapidly when the temperature of the thermistor rises to a certain degree, so that only a small current flows through the motor, and the motor is protected from being burnt out.
Description
Technical field
The present invention relates to pump, particularly relate to a kind of washing pump for wiper.
Background technology
In order to reach preferably cleaning effect, wiper usually can by a pump to glass for vehicle window ejection water or washing agent while work, and this pump comprises motor and impeller.Under the environment of temperature lower than zero degree, when automobile does not work for a long time, described water or washing agent freeze possibly, cause impeller frozen.So, when being energized to motor, because impeller cannot rotate, motor just can produce a large amount of heats at short notice, and then causes motor burnout.In order to address this problem, usually between power supply with motor, be connected fuse.So, in these cases, only fuse can be burnt.But in follow-up maintenance process, change fuse and also produce certain maintenance cost, and comparatively loaded down with trivial details.
Summary of the invention
In view of this, the invention provides a kind of washing pump not easily burnt for wiper.
A kind of washing pump, for pumping water or washing agent to coordinate and cleaning cart glass pane with wiper.This washing pump comprises pump case, is contained in the impeller in this pump case and drives the motor of this impeller.This motor comprises stator, be contained in rotor in this stator and end-cap assembly.This stator comprises housing and is fixed to the permanent-magnet pole of this inner walls.This rotor comprises rotating shaft, be fixed to the commutator of this rotating shaft and iron core and be wound to the coil of this iron core.This end-cap assembly comprises end cap and is fixed to the brush of this end cap and the brace for being connected to external power source.This end-cap assembly also comprises the thermistor of positive temperature coefficient, and this brace is electrically connected this brush by this thermistor.
Preferably, this end-cap assembly also comprises the circuit board assemblies being fixed to this end cap, and this circuit board assemblies comprises printed circuit board (PCB) and is arranged on this brush, this brace and this thermistor on this printed circuit board (PCB).
Preferably, this circuit board assemblies also comprises the some inductance be arranged on this printed circuit board (PCB), one of them inductance and this thermistor are connected on described between one of them brace and one of them brush described, and wherein another inductance is connected between another brace and another brush.
Preferably, this circuit board assemblies also comprises a piezo-resistance, and this piezo-resistance is connected to one of them brace and is not connected between one end of this connection with this thermistor.
Preferably, this circuit board assemblies also comprises the some electric capacity be arranged on this printed circuit board (PCB), each electric capacity be connected to that corresponding inductance do not connect brush between one end and ground.
Preferably, this circuit board assemblies also comprises an earth terminal, and this earth terminal is arranged on this printed circuit board (PCB) and is positioned at the edge of this end cap, and this earth terminal is when this end-cap assembly is assembled to this housing and this body contact.
Preferably, this circuit board assemblies also comprises some sockets, and this socket roughly takes the shape of the letter U and comprises two bare terminal ends, and the minimum clearance between these two bare terminal ends is less than the thickness of corresponding brace thus clamps this brace.
Preferably, each bare terminal end is roughly V-shaped.
Preferably, this circuit board assemblies also comprises the sheet metal that this heat sensitive electronic is located in period by two, and this thermistor is connected to this printed circuit board (PCB) by these two sheet metals.
Washing pump of the present invention is owing to make use of the semistor be connected between external power source and brush; when motor operations and impeller cannot rotate and cause thermistor temp to be increased to a certain degree time; the resistance of semistor can sharply increase; so; only there is very little electric current to flow through motor, thus serve protection motor not by the effect of burning.
In order to further understand feature of the present invention and technology contents, refer to following detailed description for the present invention and accompanying drawing, but institute's accompanying drawing only provides reference and explanation use, is not used for being limited the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the washing pump of better embodiment of the present invention.
Fig. 2 is the cross-sectional schematic of the washing pump of Fig. 1.
Fig. 3 is the schematic diagram of the end-cap assembly of the motor of the washing pump of Fig. 1.
Fig. 4 is the schematic diagram of another angle of end-cap assembly of Fig. 3.
Schematic diagram after Fig. 5 makes the end-cap assembly of Fig. 3 remove end cap.
Fig. 6 is the circuit connection diagram of the end-cap assembly of Fig. 3.
Fig. 7 is the relation curve between the resistance of the thermistor of the end-cap assembly of Fig. 3 and temperature.
Embodiment
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention describe in detail, will make technical scheme of the present invention and other beneficial effects apparent.Accompanying drawing only provides reference and explanation use, is not used for being limited the present invention.The size shown in accompanying drawing is only used to be convenient to clear description, and does not limit proportionate relationship.
Refer to Fig. 1 and Fig. 2, the washing pump 10 of better embodiment of the present invention comprises 20, one, a motor and is connected to motor 20 and the impeller 40 driven by it and one are fixed to motor 20 and impeller 40 are contained in pump case 50 wherein.Pump case 50 has an entrance 52 and being communicated to the container that water or washing agent are housed for exporting the outlet 54 of described water or washing agent.When motor 20 works, impeller 40 rotates, and makes the entrance 52 of pump case produce negative pressure and suck described water or washing agent, and exports it glass of automotive window to from outlet 54.Windscreen wiper (not shown) scraped the position being sprayed with described water or washing agent, thus played the effect of cleaning cart glass pane.
Motor 20 comprises stator 21, is mounted to the rotor 22 of stator 21 and end-cap assembly 30.Stator 21 comprises the housing 24 of cup-shaped and is fixed on the permanent-magnet pole 25 of housing 24 inwall.Rotor 22 comprises rotating shaft 26, is fixed to the commutator 27 of rotating shaft 26 and iron core 28, and is wound to iron core 28 and is connected to the coil 29 of commutator 27.Rotating shaft 26 one end is rotatably mounted to housing 24 by bearing, and the other end is rotatably mounted to end-cap assembly 30 by bearing.End-cap assembly 30 comprises some brush 31(Fig. 3 that can be electrically connected slidably with commutator 27).So, when external power source is energized to coil 29 by brush 31 and commutator 27, rotor 22 just can relative stator 21 rotate, thus impeller 40 rotates.
Please composition graphs 3 to Fig. 5 again, end-cap assembly 30 also comprises the circuit board assemblies 34 that an end cap 32 and are fixed to end cap 32.Brush 31 be fixed to circuit board assemblies 34 and be positioned at commutator 27 relatively both sides with its sliding contact.Brush 31 and circuit board assemblies 34 are positioned at the axially relative both sides of end cap 32.Circuit board assemblies 34 comprises the thermistor component 44 of a printed circuit board (PCB) 36, two brace 38a, 38b, two inductance 40a, 40b, two socket 42a, a 42b and positive temperature coefficient.Printed circuit board (PCB) 36 side is provided with above-mentioned electronic component, and opposite side is furnished with cabling, so that each element is electrically connected according to the circuit diagram shown in Fig. 6, that is: brace 38a is connected to a brush 31 by thermistor component 44 and inductance 40a successively, and brace 38b is connected to another brush 31 by inductance 40b.
Particularly, brush 31, inductance 40a, 40b, two socket 42a, 42b and thermistor component 44 are all by being welded and fixed to printed circuit board (PCB) 36.Each socket 42a/42b roughly takes the shape of the letter U, and comprises two bare terminal ends 43, and each bare terminal end 43 is roughly V-shaped, and the minimum clearance between two bare terminal ends 43 is less than the thickness of brace 38a/38b.So, the socket 42a/42b that brace 38a/38b insertion is corresponding just can be electrically connected with its realization easily.Thermistor component 44 comprises two sheet metal 44a, and 44c and is located in the thermosensitive resistor film 44b between these two sheet metals.Thermosensitive resistor film 44b is not directly electrically connected with other element, but is electrically connected to brace 38a and inductance 40a respectively by two sheet metal 44a, 44c.Set-up mode so can strengthen the intensity of thermistor component 44 on the one hand, on the other hand, because the heat dispersion of metal is strong, can improve the radiating efficiency of thermistor component 44.Further, because sheet metal 44a, 44c be not by other element clamps, the obstruction of thermosensitive resistor film 44b suffered by expanded by heating process is less, can keep its performance preferably.
In the course of work, when the water in the washing pump staying automobile or washing agent freeze, impeller 40 is frozen and cannot rotate time, sharply can be increased by the electric current of in running order motor 20, and then cause thermosensitive resistor film 44b to heat up.According to the feature of thermistor as shown in Figure 7, after arriving certain temperature, the resistance of thermosensitive resistor film 44b can sharply increase, and so, only has very little electric current can flow through motor 20, thus serves protection motor 20 not by the effect of burning.After a period of time, the temperature of thermosensitive resistor film 44b just can decline, and its resistance, also along with decline, can return to the state of normal work with the washing pump when impeller 40 is rotating.And in the course of the work when external power source is undergone mutation, due to the characteristic of inductance, the ER effect be loaded on coil can be made to obtain relatively steady, two terminals are respectively connected to an inductance especially in the present embodiment, and effect is better.On the other hand, because circuit board assemblies 34 is made by automatic machinery, therefore, assembled and the mode of welding by manual mode relative to by each electronic component, the packaging efficiency of the end-cap assembly 30 of the present embodiment is higher, and more firm.
Preferably, circuit board assemblies 34 also comprises a piezo-resistance (Varistor) 46, and the two ends of piezo-resistance 46 are electrically connected to two inductance 40a respectively, and 40b is connected to brace 38a, one end of 38b.So, in the course of the work, when external power source is undergone mutation, the electric current produced due to sudden change is also back to external power source by piezo-resistance 46, thus further makes the ER effect be loaded on coil obtain steadily.
Preferably, circuit board assemblies 34 also comprises an earth terminal 48 and two electric capacity 50a, 50b.One end of electric capacity 50a, 50b connects inductance 40a respectively, and 40b is connected to brace 38a, one end of 38b, and the other end is connected to earth terminal 48.Earth terminal 48 is fixed to printed circuit board (PCB) 36 and is arranged at the edge of end cap 32.So, when end-cap assembly 30 is connected to housing 24, earth terminal 48 just contacts with housing 24.This two electric capacity 50a, 50b equally can convex ripples effectively in Absorption Current, and the ER effect be loaded on coil is obtained steadily.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a washing pump, for pumping water or washing agent to coordinate and cleaning cart glass pane with wiper, this washing pump comprises pump case, be contained in the impeller in this pump case and drive the motor of this impeller, this motor comprises stator, be contained in the rotor in this stator, and end-cap assembly, this stator comprises housing and is fixed to the permanent-magnet pole of this inner walls, this rotor comprises rotating shaft, be fixed to commutator and the iron core of this rotating shaft, and be wound to the coil of this iron core, this end-cap assembly comprises end cap and is fixed to the brush of this end cap and the brace for being connected to external power source, it is characterized in that: this end-cap assembly also comprises the thermistor of positive temperature coefficient, this brace is electrically connected this brush by this thermistor.
2. washing pump as claimed in claim 1, it is characterized in that, this end-cap assembly also comprises the circuit board assemblies being fixed to this end cap, and this circuit board assemblies comprises printed circuit board (PCB) and is arranged on this brush, this brace and this thermistor on this printed circuit board (PCB).
3. washing pump as claimed in claim 2, it is characterized in that, this circuit board assemblies also comprises the some inductance be arranged on this printed circuit board (PCB), one of them inductance and this thermistor are connected on described between one of them brace and one of them brush described, and wherein another inductance is connected between another brace and another brush.
4. washing pump as claimed in claim 3, it is characterized in that, this circuit board assemblies also comprises a piezo-resistance, and this piezo-resistance is connected to one of them brace and is not connected between one end of this connection with this thermistor.
5. washing pump as claimed in claim 2, it is characterized in that, this circuit board assemblies also comprises the some electric capacity be arranged on this printed circuit board (PCB), each electric capacity be connected to that corresponding inductance do not connect brush between one end and ground.
6. washing pump as claimed in claim 5, it is characterized in that, this circuit board assemblies also comprises an earth terminal, and this earth terminal is arranged on this printed circuit board (PCB) and is positioned at the edge of this end cap, and this earth terminal is when this end-cap assembly is assembled to this housing and this body contact.
7. washing pump as claimed in claim 2, it is characterized in that, this circuit board assemblies also comprises some sockets, and this socket roughly takes the shape of the letter U and comprises two bare terminal ends, and the minimum clearance between these two bare terminal ends is less than the thickness of corresponding brace thus clamps this brace.
8. washing pump as claimed in claim 7, it is characterized in that, each bare terminal end is roughly V-shaped.
9. washing pump as claimed in claim 2, is characterized in that, this circuit board assemblies also comprises the sheet metal that this heat sensitive electronic is located in period by two, and this thermistor is connected to this printed circuit board (PCB) by these two sheet metals.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215238.1A CN104218739A (en) | 2013-06-03 | 2013-06-03 | Washing pump for automobile windscreen wipers |
| DE102014107707.5A DE102014107707A1 (en) | 2013-06-03 | 2014-06-02 | Electric pump |
| JP2014115087A JP2015008623A (en) | 2013-06-03 | 2014-06-03 | Electric pump |
| US14/294,840 US20140356200A1 (en) | 2013-06-03 | 2014-06-03 | Electric Pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215238.1A CN104218739A (en) | 2013-06-03 | 2013-06-03 | Washing pump for automobile windscreen wipers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104218739A true CN104218739A (en) | 2014-12-17 |
Family
ID=51899597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310215238.1A Pending CN104218739A (en) | 2013-06-03 | 2013-06-03 | Washing pump for automobile windscreen wipers |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140356200A1 (en) |
| JP (1) | JP2015008623A (en) |
| CN (1) | CN104218739A (en) |
| DE (1) | DE102014107707A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108370200A (en) * | 2015-12-25 | 2018-08-03 | 日立汽车系统工程株式会社 | Brush carrier and the dc motor for having the brush carrier |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10914305B2 (en) | 2016-05-27 | 2021-02-09 | Ghsp, Inc. | Thermistor flow path |
| US11959481B2 (en) | 2016-05-27 | 2024-04-16 | Ghsp, Inc. | Thermistor flow path |
| EP3467321B1 (en) | 2016-05-31 | 2022-02-16 | Mitsuba Corporation | Washer pump |
| JP6813321B2 (en) * | 2016-09-29 | 2021-01-13 | ミネベアミツミ株式会社 | DC motor |
| CN107061305A (en) * | 2017-03-29 | 2017-08-18 | 东莞市江盈泵业制造有限公司 | A kind of Intelligent efficient energy-saving water pump and its intelligent control circuit |
| JP6901948B2 (en) * | 2017-09-29 | 2021-07-14 | 株式会社マキタ | Electric work machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5080554A (en) * | 1989-07-31 | 1992-01-14 | Asmo Co., Ltd. | Windscreen washer pump for vehicle |
| CN101459364A (en) * | 2007-12-14 | 2009-06-17 | 阿斯莫有限公司 | Motor, thermistor, and manufacturing method of the same |
| CN101911437A (en) * | 2007-12-28 | 2010-12-08 | 马渊马达株式会社 | Case lid assembly of DC motor with brush |
| CN101931299A (en) * | 2009-06-22 | 2010-12-29 | 马渊马达株式会社 | Motor |
| CN202157972U (en) * | 2011-08-01 | 2012-03-07 | 温岭市真奇汽车零部件有限公司 | Minitype washing pump for automobile |
| JP2012165586A (en) * | 2011-02-08 | 2012-08-30 | Mitsuba Corp | Electric motor and manufacturing method of the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5734243A (en) * | 1996-09-23 | 1998-03-31 | Navistar International Transportation Corp. | Dual control of windshield wiper system |
-
2013
- 2013-06-03 CN CN201310215238.1A patent/CN104218739A/en active Pending
-
2014
- 2014-06-02 DE DE102014107707.5A patent/DE102014107707A1/en not_active Withdrawn
- 2014-06-03 JP JP2014115087A patent/JP2015008623A/en active Pending
- 2014-06-03 US US14/294,840 patent/US20140356200A1/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5080554A (en) * | 1989-07-31 | 1992-01-14 | Asmo Co., Ltd. | Windscreen washer pump for vehicle |
| CN101459364A (en) * | 2007-12-14 | 2009-06-17 | 阿斯莫有限公司 | Motor, thermistor, and manufacturing method of the same |
| CN101911437A (en) * | 2007-12-28 | 2010-12-08 | 马渊马达株式会社 | Case lid assembly of DC motor with brush |
| CN101931299A (en) * | 2009-06-22 | 2010-12-29 | 马渊马达株式会社 | Motor |
| JP2012165586A (en) * | 2011-02-08 | 2012-08-30 | Mitsuba Corp | Electric motor and manufacturing method of the same |
| CN202157972U (en) * | 2011-08-01 | 2012-03-07 | 温岭市真奇汽车零部件有限公司 | Minitype washing pump for automobile |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108370200A (en) * | 2015-12-25 | 2018-08-03 | 日立汽车系统工程株式会社 | Brush carrier and the dc motor for having the brush carrier |
| CN108370200B (en) * | 2015-12-25 | 2020-05-01 | 日立汽车系统工程株式会社 | Brush holder and DC motor having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014107707A1 (en) | 2014-12-04 |
| US20140356200A1 (en) | 2014-12-04 |
| JP2015008623A (en) | 2015-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141217 |