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CN103746498B - Rear end cover structure of motor for pressure stabilizing pump - Google Patents

Rear end cover structure of motor for pressure stabilizing pump Download PDF

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Publication number
CN103746498B
CN103746498B CN201310589346.5A CN201310589346A CN103746498B CN 103746498 B CN103746498 B CN 103746498B CN 201310589346 A CN201310589346 A CN 201310589346A CN 103746498 B CN103746498 B CN 103746498B
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China
Prior art keywords
brush
hole
end cap
cap body
groove
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CN201310589346.5A
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Chinese (zh)
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CN103746498A (en
Inventor
杨晓琴
黄世杰
王长军
吕玉婵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Zhuhai Kaibang Motor Manufacture Co Ltd
Hefei Kaibang Motor Co Ltd
Henan Kaibang Motor Co Ltd
Chongqing Kaibang Motor Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Zhuhai Kaibang Motor Manufacture Co Ltd
Hefei Kaibang Motor Co Ltd
Henan Kaibang Motor Co Ltd
Chongqing Kaibang Motor Co Ltd
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Application filed by Gree Electric Appliances Inc of Zhuhai, Zhuhai Kaibang Motor Manufacture Co Ltd, Hefei Kaibang Motor Co Ltd, Henan Kaibang Motor Co Ltd, Chongqing Kaibang Motor Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201310589346.5A priority Critical patent/CN103746498B/en
Publication of CN103746498A publication Critical patent/CN103746498A/en
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Abstract

The invention provides a rear end cover structure of a motor for a voltage stabilizing pump, which comprises an end cover body, wherein a central through hole is formed in the central position of the end cover body; the two sides of the bearing chamber are respectively provided with a group of brush holders, the brush holders are internally provided with electric brush cavities, a spring fixing seat is arranged beside each brush holder, and the brush holders, the spring fixing seats and the end cover body are of an integrated structure. The rear end cover structure of the motor for the stabilized voltage pump is improved through the structures in the aspects of assembling the electric brush, the spring, fixing the power line and the like, and the integration of the brush holder, the spring fixing seat and the end cover body is realized, so that the assembly is more convenient, reliable and efficient, and the manufacturing difficulty and the production cost of parts are reduced.

Description

The rear end cover structure of voltage stabilizing electric motor for pump
Technical field
The present invention relates to a kind of stabilized pressure pump for water purifier, specifically, it is related to a kind of rear end of voltage stabilizing electric motor for pump The improvement of lid structure.
Background technology
At present, with the development of the raising of people's living standard, water purification technology, water health has become heat of concern Point, increasing water purifier comes into average family.
Stabilized pressure pump is the critical component of water purifier, for example Patent No. 200610113401.3(Notification number CN101153589A)Chinese invention patent《The method of preventing water leakage in diaphragm type compression pump and its structure》Disclose one kind Diaphragm type compression pump, its structure as shown in Figure 1 to Figure 3, including:Motor lO ';Upper lid positioned at this motor lO ' output shaft end Seat 1l ', this upper cover base ll ' periphery has installed several screws 12 ';Several escapements 13 ' are hubbed in this upper cover base ll ', and are subject to This motor 10 ' output shaft drives and is converted into axially reciprocating;Diaphragm 60 ' is located on this upper cover base ll ';Several fixed Piston thrust block 30 ' on this diaphragm 60 ':Piston valve body 40 ' is nested on diaphragm 60 ' top surface;In addition it is additionally provided with pump head The elements such as lid 50 ', the perforation preset by the several screws 12 ' on upper cover base 11 ' and pump head lid 50 ' opposite position 5l ', and common by bolt 2 ', in addition spiral shell is combined into one admittedly.
Wherein, a circle seal groove raised line 61 ' is equipped with the outermost periphery top surface of this diaphragm 60 ', and from its top surface Central position re-radiation goes out to have several and this seal groove raised line 61 ' mutually fin in succession, and this each fin and seal groove raised line Between 61 ', then it is separated out several piston start areas 63 '.The screw hole site of diaphragm 60 ' each piston start area 63 ' top surface Place, each setting one hollow circuit cylinder 64 ', and this hollow circuit cylinder 64 ' is all to have the plastic cement material of identical elasticity with diaphragm 60 ' Unitary injection formed, and its external diameter is equal to or slightly less than the internal diameter of shoulder hole 31 ' in piston thrust block 30 ', by piston thrust block 30 ' Shoulder hole 31 ' be placed on the outer rim of this hollow circuit cylinder 64 ' after, then nationality by fixed screw 3 ' pass through this hollow circuit cylinder 64 ' in Heart hole, and exert a force the epimere portion of the screw terminal of fixed screw 3 ' synchronization forceful contact to this hollow circuit cylinder 64 ' so that this hollow The epimere portion of cylinder 64 ' gradually extends out deformation to its surrounding, is finally screwed into the screwed hole of escapement 13 ' completely in fixed screw 3 ' 14 ' and reach packing locking state when, the epimere portion of this hollow circuit cylinder 64 ' can be fully filled with fixed screw 3 ' head Between the shoulder hole 31 ' top surface of bottom surface and piston thrust block 30 ', that is, formed can stop hydraulic weepage block construction.
In addition, this piston valve body 40 ' is arranged with the row of a hemispherical groove towards the middle position in pump head lid 50 ' direction Water seat 41 ', drainage seat 4l ' central authorities are equipped with a location hole, are respectively spaced on 120 degree of angular position centered on location hole, each recessed It is provided with one isolated groove, be equipped with several discharge outlet 44 ' on region between each isolated groove, and correspond to the row in each area In the drainage seat 4l ' peripheral surface at the mouth of a river 44 ', then it is equipped with several water inlets 45 ', and the central authorities of each water inlet 45 ' respectively place There is the loudspeaker piston sheet 46 ' of a handstand, can hinder by this loudspeaker piston sheet 46 ' and cover each water inlet 45 ';This non-return rubber cushion 47 ' Tie-down is affixed on the drainage seat 4l ' top surface of piston valve body 40 ', the softer, elastic hollow hemisphere shape body being formed in one, its bottom Central authorities have protruded out a locating dowel 48 ', and 120 degree of angular position of top surface center spacer are respectively equipped with one floor 49 ', and with respect to Respectively on the outer peripheral edge face of this floor 49 ', more outwards respectively it is convexly equipped with a piece of flange, insert determining of drainage seat 4l ' using locating dowel 48 ' Position hole, and so that each flange is embedded in isolated groove, you can make the outer peripheral edge hemisphere face of entirely non-return rubber cushion 47 ' completely close Patch resistance covers the discharge outlet 44 ' in the upper each region of drainage seat 4l ', and wherein, this non-return rubber cushion 47 ' is by each row on drainage seat 4l ' Between the mouth of a river and the piston thrust block 30 ' of diaphragm 60 ', be to be formed with an intake chamber, and the other end of this each intake chamber then with enter The mouth of a river 45 ' is connected.
The outer edge surface of this pump head lid 50 ' is provided with inlet opening 52 ', apopore 53 ' and several perforation 51 ', and its inner rim face Bottom be then equipped with a scalariform groove 54 ', make this diaphragm 60 ' and piston valve body 40 ' be mutually superimposed after assembly outer rim, energy Be closely attached on this scalariform groove 54 ', and be provided with an annular groove 55 ' in its interior lines face central authorities, the bottom system of this annular groove 55 ' press in So that the draining of the internal face of this annular groove 55 ' and the wealthy body 40 ' of piston on the outside line face of drainage seat 4l ' of this piston valve body 40 ' Space between seat 4l ', around forming a high pressure hydroecium 200 '.
After tap water is entered by the inlet opening 52 ' of pump head lid 50 ', can be by the loudspeaker piston sheet on piston valve body 40 ' 46 ' push open, and enter to via the water inlet 45 ' of piston valve body 40 ' in intake chamber 100 ';When motor 10 ' output shaft according to When sequence drives each escapement 13 ', because each piston thrust block 30 ' is under the reciprocal axial action of its escapement 13 ', synchronously made diaphragm Each piston start area 63 ' on 60 ' produces vibration displacement, thus the water in extruding intake chamber 100 ', and so that its hydraulic pressure is increased, rise Non-return rubber cushion 47 ' on drainage seat 4l ' can be pushed open by the water under high pressure Wp after pressure, and each discharge outlet 44 ' via drainage seat 4l ', Sequentially constantly flow in high pressure hydroecium 200 ', then again via apopore 53 ' the discharge pressure pump of this pump head lid 50 ' outside, Filter required water pressure to provide reverse osmosis water filter to carry out reverse osmosis.
As the core component of stabilized pressure pump, the assembling quality of motor and efficiency of assembling directly affect quality and the dress of stabilized pressure pump Join efficiency.Therefore, the structure of motor rear end cap is particularly important.And the rear end cap knot of the voltage stabilizing electric motor for pump of prior art Structure is complicated, directly results in the parts such as brush, brush carrier, spring, power line and installs unreliable, motor is susceptible to fault, and after The production cost of end cap is high.
Content of the invention
It is an object of the invention to overcoming disadvantage mentioned above and deficiency, provide a kind of compact simple voltage stabilizing electric motor for pump rear end Lid structure, to improve assembling quality and the efficiency of assembling of product.
For achieving the above object, the invention provides a kind of rear end cover structure of voltage stabilizing electric motor for pump, including end cap body, The center of this end cap body is provided with central through hole, on the inner face of described end cap body, around described central through hole It is provided with the bearing chamber for assembling bearing, the centrage of this bearing chamber is coaxial with the hole heart line of described central through hole;Wherein, described The both sides of bearing chamber are respectively provided with one group of brush carrier, and the inside of described brush carrier has brush chamber, are provided with a spring solid by each brush carrier Reservation, described brush carrier, spring fixed seat and end cap body are integrated.
From such scheme, the voltage stabilizing electric motor for pump rear end cover structure of the present invention passes through in assembling brush, spring and consolidates The structure determining the aspects such as power line improve it is achieved that brush carrier, spring fixed seat with the integrated of end cap body so that assembling More convenient, reliable, efficient, and reduce manufacture difficulty and the production cost of part.
Preferably, described brush carrier, spring fixed seat and end cap body are with identical plastic cement material integrated injection molding.Using This design can save the operation installing brush carrier and end cap, effectively improves efficiency;The one-shot forming of brush carrier space, dimensionally stable can Lean on, the error accumulated by secondary installing brush carrier can be avoided to affect motor noise or cause brush to block.
Preferably, the two described brush carriers and two described spring fixed seats hole heart line pair all with regard to described central through hole Claim.The brush of two different directions is installed using the spring that this design can use same rotation direction, is easy to handling of goods and materials.
Preferably, the upper surface of described brush carrier has the first groove, and the length of described first groove is more than the length of brush, The width of the first groove is more than the diameter of brush pigtail;The side of described brush carrier has the second groove, and the length of the second groove is more than The length of brush, the width of the second groove is more than the line footpath of torsion spring;It is provided with for fixing between described brush carrier and spring fixed seat The breach of torsion spring rectilinear end.It is using the advantage that this designs:1)First groove length is more than brush length, can make assembling just Profit, it is to avoid make to collide between brush and diverter during assembling because groove length is too short and lead to brush damaged, produces motor Noise;Groove width is more than point shunt welding diameter, and the motor performance producing retardance and leading between shunt welding and brush carrier can be avoided bad; 2)Second groove can make torsion spring fluent in brush carrier, so that brush is slided in brush carrier smooth.
Preferably, described spring fixed seat is made up of boss and cylinder, is fixed with torsion spring, institute on described spring fixed seat State the external diameter with diameter greater than described torsion spring of boss, described boss is less than the inner face of described end cap body, outside described cylinder Footpath is less than the internal diameter of described torsion spring, and the upper surface of described cylinder is maintained an equal level with the upper surface of described brush carrier.It is easy to pacify using this design Dress torsion spring, makes torsion spring rest on level altitude, the power of torsion spring cantilever is maintained in the range of material requirements, keeps the optimal of torsion spring Performance, makes motor operation stable.
Preferably, the inner face of described end cap body is provided with two and is available for the through hole that screw passes through, two described logical Hole is symmetrical with regard to the hole heart line of described central through hole, the hole heart line of two described through holes and the brush chamber of two described brush carriers Central axis.Screw can be made easily to pass through this end cap using this design, be fixed with the drive end bearing bracket of motor.
Preferably, the inner face of described end cap body is additionally provided with for fixing and connecting brush pigtail terminal and power line Two blind holes of terminal, described two blind holes are symmetrical with regard to the hole heart line of described two through holes.Screw can be made using this design It is connected fastening, reliability with end cap.
Preferably, a breach, the centrage of this breach and described central through hole are provided with the outer rim of described end cap body Hole heart line intersect vertically, this breach is matched with the outlet cushion rubber for fixed power source line.It is using the advantage that this designs, After this breach is coordinated with outlet cushion rubber, slot with cabinet sides and be fitted close, protective and the power supply of motor can be effectively improved The pulling-out force of line.
Preferably, the outer surface of described end cap body is provided with two counter sinks and two grooves, wherein said two countersunk heads Hole is coaxial with described two through holes respectively, the hole heart line of described two counter sinks and the central axis of described two grooves; Described groove is located at the mirror position of described brush carrier, and the width of described groove is equal to or less than the width in described brush chamber, described The depth of groove is equal with its width.It is using the advantage that this designs, counter sink can make rigging screw and end cap body fits Closely, the thickness that groove floor is formed with brush carrier bottom surface and the thickness in other faces of end cap is consistent, it is to avoid because thickness The contracting material phenomenon that inequality is led to, makes end cover surface smooth.
Preferably, the outer surface of described end cap body is additionally provided with around some outside the cavity wall of described bearing chamber Shape reinforcement triangular in shape, the side of described brush carrier also is provided with some reinforcements.Using this design can improve brush carrier and The intensity of bearing chamber.
Brief description
Fig. 1 is a kind of three-dimensional exploded view of diaphragm type compression pump of prior art.
Fig. 2 is one of operation principle schematic diagram of diaphragm type compression pump shown in Fig. 1.
Fig. 3 is the two of the operation principle schematic diagram of diaphragm type compression pump shown in Fig. 1.
Fig. 4 is the mounting structure schematic diagram of the voltage stabilizing electric motor for pump rear end cap of the present invention.
Fig. 5 is the interior side plan view of rear end cap shown in Fig. 4.
Fig. 6 is the partial sectional view of rear end cap shown in Fig. 5.
Fig. 7 is the outer side plan view of rear end cap shown in Fig. 4.
Specific embodiment
The various embodiments of the present invention are described more fully below, embodiment therein be described with reference to the drawings and under Described in literary composition.Although the present invention will illustrate in conjunction with illustrative embodiments it should be understood that the invention is not restricted to these examples Property embodiment.On the contrary, the present invention not only includes these embodiments, but also includes various modifications, improvement.
Referring to Fig. 4 to Fig. 7, a kind of rear end cover structure of voltage stabilizing electric motor for pump of the present invention includes end cap body 10, end cap The center of body 10 is provided with a central through hole matching with closure 17, the hole heart line of this central through hole 17 and rotor Assembly centrage is coaxial, and this central through hole 17 is used for the performance assembling rotor assembly and detection motor.
As Fig. 5 and Fig. 6, on the inner face 101 of end cap body 10, the surrounding of central through hole 17 is provided with one and is used for assembling The bearing chamber 18 of bearing 7, the centrage of bearing chamber 18 is coaxial with the hole heart line of central through hole 17.If the surrounding of bearing chamber 18 is provided with The cavity 20 that dry shape differs, forms some reinforcements between each cavity 20, it is to avoid ending cover thickness is excessive and cause contracting material, Lead to end cover surface uneven, size is unstable.Additionally, the both sides of bearing chamber 18 are respectively provided with one group of brush carrier 11, each brush carrier It is provided with a spring fixed seat 16, the two brush carriers 11 and two spring fixed seats 16 hole heart line all with regard to central through hole 17 by the of 11 171 is symmetrical.Brush carrier 11, spring fixed seat 16 and end cap body 10 are the integrated design, and with identical plastic cement material one Injection mo(u)lding.
The hollow of brush carrier 11(I.e. groove 114 on end cap body 10 outer surface)Rectangular, it is smaller in size than the outer of brush 2 Shape size, the side appropriate location of brush carrier 11 is provided with some reinforcements 112, and the upper surface of brush carrier 11 has groove 111, groove 111 length is more than the length of brush 2, and the width of groove 111 is more than the diameter of brush pigtail 21 so that brush pigtail 21 can be from logical Groove 111 stretches out.The side of brush carrier 11 has groove 113, and the length of groove 113 is more than the length of brush 2, the width of groove 113 Line footpath more than torsion spring 3.Spring fixed seat 16 is made up of boss 161 and cylinder 162, and torsion spring 3 is fixed on spring fixed seat 16, The external diameter with diameter greater than torsion spring 3 of boss 161, boss 161 is slightly below the inner face 101 of end cap body 10, the external diameter of cylinder 162 Less than the internal diameter of torsion spring 3, the upper surface of cylinder 162 is maintained an equal level with the upper surface of brush carrier 11.
Appropriate location between brush carrier 11 and spring fixed seat 16 is provided with breach 12, and this breach 12 is used for fixing torsion spring 3 Rectilinear end.Two through hole 14, screw are provided with the inner face 101 of end cap body 10(Not shown)Through through hole 14 and drive end bearing bracket Coaxial through-hole matches, and screw is made up of not magnetic material, and two through holes 14 are right with regard to the hole heart line 171 of central through hole 17 Claim, the hole heart line 117 of two through holes 14 is vertical with the centrage 118 in the brush chamber 115 of two brush carriers 11.
Two consistent blind holes of geomery 13 are additionally provided with the inner face 101 of end cap body 10, two blind holes 13 are closed Symmetrical in the hole heart line 117 of two through holes 14, blind hole 13 is used for coordinating with screw 6 with fixed brush pigtail terminal 210 and power supply Line terminals 40, and so that brush pigtail terminal 210 is connected herein with power line terminal 40.The outer rim of end cap body 10 is provided with one Breach 15, the centrage of breach 15 is intersected vertically with the hole heart line 171 of central through hole 17, and this breach 15 is gone out with bundle assembly 4 Line cushion rubber 5 matches, and outlet cushion rubber 5 is made up of quality of rubber materials, for fixed power source line 41,42, power line 41,42 and outlet glue The wire hole of circle 5 coordinates for gap.This breach 15 is applied not only to assemble outlet cushion rubber 5, and determining for casing and rear end cap 1 Position.
Referring to Fig. 7, the outer surface of end cap body 10 is provided with two counter sinks 19, and counter sink 19 is coaxial with through hole 14, countersunk head The aperture in hole 19 is more than the external diameter of screw head, and the depth of counter sink 19 is more than the height of screw head.In end cap body 10 Be additionally provided with around some reinforcements 116 outside the cavity wall of bearing chamber 18 on outer surface, reinforcement 116 be shaped as triangle Shape, its further groove 114 is located at the mirror position of brush carrier 11, and the width of groove 114 is equal to or less than the brush chamber 115 of brush carrier 11 Width, the depth of this groove 114 is equal with its width.
Referring to Fig. 4, the rear end cap 1 of said structure, when assembling uses, first bearing 7 is placed in bearing chamber 18, and by electricity Brush 2 is placed in the brush chamber 115 of brush carrier 11, secondly the outlet cushion rubber 5 on bundle assembly 4 is stuck at breach 15, uses spiral shell again Nail 6 passes through the terminal hole of brush pigtail terminal 210 and the terminal hole of power line terminal 40, will brush pigtail terminal 210 And power line terminal 40 is fastened in blind hole 13, finally, assemble rotor assembly, shifting brush 2 to rational position is so that brush is joined Close arc surface to be fitted close with commutator face, fixed brush torsion spring 3.
Using the rear end cap of this brush carrier 11, spring fixed seat 16 and end cap body integral structure, the pulling-out force of product Test and anti-vibration test demonstrate the reliability of the parts assemblies such as the brush of this product, spring, bundle assembly, and product Efficiency of assembling also substantially increases, and has effectively ensured product reliability of operation.

Claims (8)

1. the rear end cover structure of voltage stabilizing electric motor for pump, including end cap body, the center of this end cap body is provided with central through hole, On the inner face of described end cap body, the surrounding of described central through hole is provided with the bearing chamber for assembling bearing, this bearing chamber Centrage coaxial with the hole heart line of described central through hole;It is characterized in that, the both sides of described bearing chamber are respectively provided with one group of brush carrier, The inside of described brush carrier has brush chamber, is provided with a spring fixed seat, wherein said brush carrier and described spring by each brush carrier On the inner face of described end cap body, described brush carrier, spring fixed seat and end cap body are integrated for fixed seating;? The inner face of described end cap body is provided with two and is available for the through hole that screw passes through, and two described through holes are with regard to described central through hole Hole heart line symmetrical, the central axis in the hole heart line of two described through holes and the brush chamber of two described brush carriers;Described end The outer surface of lid body is provided with two counter sinks and two grooves, and wherein said two counter sinks are same with described two through holes respectively Axle, the hole heart line of described two counter sinks and the central axis of described two grooves;Described groove is located at described brush carrier Mirror position, the width of described groove is equal to or less than the width in described brush chamber, and the depth of described groove is equal with its width.
2. rear end cover structure according to claim 1 is it is characterised in that described brush carrier, spring fixed seat and end cap body With identical plastic cement material integrated injection molding.
3. rear end cover structure according to claim 1 is it is characterised in that two described brush carriers and two described springs are fixed Seat all hole heart lines with regard to described central through hole are symmetrical.
4. rear end cover structure according to claim 1 is it is characterised in that the upper surface of described brush carrier has the first groove, The length of described first groove is more than the length of brush, and the width of the first groove is more than the diameter of brush pigtail;The side of described brush carrier Face has the second groove, and the length of the second groove is more than the length of brush, and the width of the second groove is more than the line footpath of torsion spring;Described It is provided with the breach for fixing torsion spring rectilinear end between brush carrier and spring fixed seat.
5. rear end cover structure according to claim 1 is it is characterised in that described spring fixed seat is by boss and cylinder structure Become, torsion spring, the external diameter with diameter greater than described torsion spring of described boss are fixed with described spring fixed seat, described boss is less than The inner face of described end cap body, the external diameter of described cylinder is less than the internal diameter of described torsion spring, the upper surface of described cylinder with described The upper surface of brush carrier maintains an equal level.
6. rear end cover structure according to claim 1 is it is characterised in that be additionally provided with the inner face of described end cap body For fixing and connecting two blind holes of brush pigtail terminal and power line terminal, described two blind holes are with regard to described two through holes Hole heart line is symmetrical.
7. rear end cover structure according to claim 1 lacks it is characterised in that being provided with one in the outer rim of described end cap body Mouthful, the centrage of this breach intersects vertically with the hole heart line of described central through hole, this breach and the outlet for fixed power source line Cushion rubber matches.
8. rear end cover structure according to claim 1 is it is characterised in that be additionally provided with the outer surface of described end cap body Around the reinforcement triangular in shape of some strips outside the cavity wall of described bearing chamber, the side of described brush carrier also is provided with some Bar reinforcement.
CN201310589346.5A 2013-11-21 2013-11-21 Rear end cover structure of motor for pressure stabilizing pump Active CN103746498B (en)

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CN103746498B true CN103746498B (en) 2017-02-08

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105240394A (en) * 2015-11-09 2016-01-13 富乐压铸(太仓)有限公司 Shaft head

Citations (6)

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Publication number Priority date Publication date Assignee Title
US5283494A (en) * 1991-07-31 1994-02-01 Robert Bosch Gmbh Apparatus for feeding fuel to a motor vehicle engine from a fuel tank
US5397952A (en) * 1993-03-10 1995-03-14 Robert Bosch Gmbh Brush holder for mechanically commutated electric motors
CN202031808U (en) * 2011-03-14 2011-11-09 瑞安市得业汽车部件有限公司 Improved vehicle air conditioning blower
CN102969824A (en) * 2011-08-31 2013-03-13 罗伯特·博世有限公司 Brush holder of motor with commutator, motor with brush holder, and handheld tool with motor
CN103337929A (en) * 2013-06-13 2013-10-02 东阳市东政电机有限公司 Improved structure of motor end cover
CN203607973U (en) * 2013-11-21 2014-05-21 珠海凯邦电机制造有限公司 Rear end cover structure of motor for steady voltage pump

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5283494A (en) * 1991-07-31 1994-02-01 Robert Bosch Gmbh Apparatus for feeding fuel to a motor vehicle engine from a fuel tank
US5397952A (en) * 1993-03-10 1995-03-14 Robert Bosch Gmbh Brush holder for mechanically commutated electric motors
CN202031808U (en) * 2011-03-14 2011-11-09 瑞安市得业汽车部件有限公司 Improved vehicle air conditioning blower
CN102969824A (en) * 2011-08-31 2013-03-13 罗伯特·博世有限公司 Brush holder of motor with commutator, motor with brush holder, and handheld tool with motor
CN103337929A (en) * 2013-06-13 2013-10-02 东阳市东政电机有限公司 Improved structure of motor end cover
CN203607973U (en) * 2013-11-21 2014-05-21 珠海凯邦电机制造有限公司 Rear end cover structure of motor for steady voltage pump

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