US20150167694A1 - Pump fixing structure and pump - Google Patents
Pump fixing structure and pump Download PDFInfo
- Publication number
- US20150167694A1 US20150167694A1 US14/409,246 US201314409246A US2015167694A1 US 20150167694 A1 US20150167694 A1 US 20150167694A1 US 201314409246 A US201314409246 A US 201314409246A US 2015167694 A1 US2015167694 A1 US 2015167694A1
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- US
- United States
- Prior art keywords
- motor
- pump
- stator
- outer peripheral
- case
- 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.)
- Abandoned
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 78
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 14
- 239000004412 Bulk moulding compound Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 8
- 238000005452 bending Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/04—Helico-centrifugal pumps
-
- 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
-
- 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
- F04D13/0686—Mechanical details of the pump control unit
-
- 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
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- 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
-
- 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
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/17—Alloys
- F05D2300/171—Steel alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/50—Intrinsic material properties or characteristics
- F05D2300/501—Elasticity
Definitions
- the present invention relates to a pump fixing structure for fixing a pump to a fixing base. Further, the present invention relates to a pump which structures the pump fixing structure.
- Patent Literature 1 a pump fixing device for fixing a pump to a base has been known (see, for example, Patent Literature 1).
- a pump is fixed to a base through an abutting part.
- the pump includes a pump part having an outlet port and an inlet port for fluid, and a motor part for rotating an impeller which is disposed in an inside of the pump part.
- An outer peripheral face of the motor part is formed in a cylindrical face shape.
- the abutting part and the base are formed by bending a metal plate in a predetermined shape.
- the abutting part is structured of a curved face part in a circular arc shape to which an outer peripheral face of the motor part formed in a cylindrical face shape is fixed, side face parts which are bent to a lower direction from both ends of the curved face part, and bottom face parts extended from lower ends of the side face parts in a horizontal direction.
- the base is structured of an upper face part to which the bottom face parts of the abutting part are fixed and side face parts which are bent from both ends of the upper face part to a lower direction.
- a pump including a pump part having an outlet port and an inlet port for fluid and a motor part for rotating an impeller which is disposed in an inside of the pump part
- a pump which includes a stator structuring a motor part and a mold part made of resin which covers the stator (see, for example, Patent Literature 2).
- the mold part is integrally formed with the stator and structures an outer peripheral face of the motor part.
- an outer peripheral face of the motor part is commonly formed in a circular truncated cone face shape having a draft angle for drawing out the mold part from a die which is used when the stator and the mold part are integrally molded.
- At least an embodiment of the present invention provides a pump fixing structure for fixing a pump having a pump part and a motor part to a fixing base, the pump fixing structure being capable of suppressing transmission of vibration from the motor part to the fixing base even when a fixed part of the pump part which is fixed to the fixing base is deformed due to a lapse of time. Further, at least an embodiment of the present invention provides a pump which structures the pump fixing structure.
- the pump includes a pump part which has an outlet port and an inlet port for fluid and is disposed with an impeller in its inside, and a motor part for rotating the impeller.
- the motor part includes a stator having a drive coil and a stator core around which the drive coil is wound, and a motor case which is formed of resin and is integrally molded with the stator to structure an outer peripheral face of the motor part.
- the outer peripheral face of the motor part is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case from a die used when the stator and the motor case are integrally molded.
- the pump part is provided with a fixed part which is fixed to the fixing base, the fixing base is formed by bending a metal plate and is provided with a motor support part disposed on a lower side with respect to the motor part, and a buffer member having elasticity is disposed between the motor part and the motor support part.
- a buffer member having elasticity is disposed between the motor support part disposed on a lower side with respect to the motor part and the motor part. Therefore, according to at least an embodiment of the present invention, even when the fixed part of the pump part which is fixed to the fixing base is deformed with a lapse of time, the motor part is prevented from contacting with the motor support part of the fixing base. Therefore, in at least an embodiment of the present invention, even when the fixed part of the pump part which is fixed to the fixing base is deformed with a lapse of time, transmission of vibration from the motor part to the fixing base is suppressed.
- a buffer member is disposed between the motor support part disposed on a lower side with respect to the motor part and the motor part. Therefore, even when an outer peripheral face of the motor part is formed in a substantially circular truncated cone face shape having a draft angle, the motor part is supported by the buffer member in a stable state.
- the fixing base is formed in a substantially angular groove shape which is provided with the motor support part formed in a substantially rectangular shape and side face parts which are bent in a lower direction from each of a pair of opposite sides of the motor support part formed in the substantially rectangular shape, the fixed part is fixed to one of two side face parts, a space is formed between the motor part and the motor support part, and the motor part and the motor support part are contacted with the buffer member.
- a second buffer member having elasticity is disposed between the side face part and the fixed part. According to this structure, vibration of the motor part is suppressed from being transmitted to the fixing base through the pump part by the second buffer member.
- the motor support part is formed with an engaging hole with which a part of the buffer member is engaged, and the buffer member is formed with an engaging projection which is engaged with the engaging hole. According to this structure, positional displacement of the buffer member with respect to the motor support part is prevented.
- the motor part includes a connector for supplying an electric current to the drive coil
- the connector is integrated with the motor case so as to protrude from the outer peripheral face of the motor case when the stator and the motor case are integrally molded and, when viewed in an axial direction of the motor part, a gate mark which is a mark of a gate of the die is formed on the motor case on an opposite side to the connector so as to interpose an axial center of the motor part therebetween.
- a shape of the motor case when viewed in an axial direction of the motor part can be set to be line symmetric with respect to a line connecting the center of the connector and the gate mark. Therefore, when the stator and the motor case are to be integrally molded, resin is easily flowed uniformly from the gate toward a portion where the connector is disposed.
- the motor case is formed with a gate mark formed part where the gate mark is formed on its surface so as to protrude to an outer side in a radial direction of the motor part.
- a wall thickness of the gate mark formed part can be made larger than other portions and thus, when the stator and the motor case are to be integrally molded, resin is easily flowed from the gate into an inside of the die.
- the motor case is formed of BMC (Bulk Molding Compound). In this case, heat radiation property and vibration absorption property of the motor case are enhanced.
- the motor part includes a rotor which is disposed on an inner peripheral side with respect to the stator, the stator core is provided with an outer peripheral core part in a substantially cylindrical shape which is disposed on an outer peripheral side with respect to the drive coil, and at least a part of a gate mark which is a mark of a gate of the die and at least a part of the outer peripheral core part are overlapped with each other in a radial direction of the motor part.
- injection pressure of the resin is hard to be directly applied to the drive coil and the like. Therefore, when the stator 12 and the motor case 14 are to be integrally molded, damage of the drive coils 22 and the like can be prevented.
- FIG. 1 is a perspective view showing a pump fixing structure in accordance with an embodiment of the present invention.
- FIG. 2 is a side view showing the pump fixing structure in FIG. 1 which is viewed in another direction.
- FIG. 3 is a rear view showing the pump fixing structure which is viewed in the “E-E” direction in FIG. 2 .
- FIG. 4 is a cross-sectional view showing the “F-F” cross section in FIG. 3 .
- FIG. 5 is a perspective view showing a state that a stator shown in FIG. 4 is taken out from a motor case.
- FIG. 6 is a side view showing a state that the stator and the motor case shown in FIG. 5 are integrated with each other.
- FIG. 1 is a perspective view showing a pump fixing structure 1 in accordance with an embodiment of the present invention.
- FIG. 2 is a side view showing the pump fixing structure 1 in FIG. 1 which is viewed in another direction.
- FIG. 3 is a rear view showing the pump fixing structure 1 which is viewed in the “E-E” direction in FIG. 2 .
- FIG. 4 is a cross-sectional view showing the “F-F” cross section in FIG. 3 .
- FIG. 5 is a perspective view showing a state that a stator 12 shown in FIG. 4 is taken out from a motor case 14 .
- FIG. 6 is a side view showing a state that the stator 12 and the motor case 14 shown in FIG. 5 are integrated with each other.
- the pump fixing structure 1 in this embodiment is a structure for fixing a pump 2 to a fixing base 3 and includes the pump 2 and the fixing base 3 to which the pump 2 is fixed.
- an axial line direction of a motor part 7 is referred to as an “X” direction
- a direction which is perpendicular to the axial line direction of the motor part 7 and parallel to an upper face part 3 a of the fixing base 3 is referred to as a “Y” direction
- a direction which is perpendicular to the axial line direction of the motor part 7 and perpendicular to the upper face part 3 a of the fixing base 3 is referred to as a “Z” direction.
- the “X” direction is referred to as a front and rear direction
- the “Y” direction is referred to as a right and left direction
- the “Z” direction is referred to as an upper and lower direction.
- the “X 1 ” direction side is referred to as a “front” side
- the “X 2 ” direction side is a “rear” (back) side
- the “Y 1 ” direction side is a “right” side
- the “Y 2 ” direction side is a “left” side
- the “Z 1 ” direction side is an “upper” side
- the “Z 2 ” direction side is a “lower” side.
- the pump 2 is a pump which is referred to as a canned pump, which includes a pump part 6 in which an impeller 5 a (see FIG. 4 ) is disposed in its inside and a motor part 7 for rotating the impeller 5 a .
- the pump part 6 structures a front end side portion of the pump 2 in an axial line direction of the motor part 7
- the motor part 7 structures a rear end side portion of the pump 2 in the axial line direction of the motor part 7
- the impeller 5 a structures a front end side portion in an axial line direction of an impeller member 5 .
- the pump part 6 includes a pump case 9 which is formed with an outlet port 9 a and an inlet port 9 b for fluid.
- the outlet port 9 a is formed in a cylindrical tube shape which protrudes toward an obliquely left upper direction and the inlet port 9 b is formed in a cylindrical tube shape which protrudes toward a front direction.
- a rear end side of the pump case 9 is formed with a flange part 9 c for fixing the motor part 7 to the pump part 6 and for fixing the pump 2 to the fixing base 3 .
- a lower end side of the flange part 9 c is formed as a fixed part 9 d which is fixed to the fixing base 3 .
- An inside of the pump case 9 is a part of a pump chamber 10 as shown in FIG. 4 .
- the motor part 7 includes a rotor 11 , a stator 12 , a partition member 13 which defines the pump chamber 10 together with the pump case 9 , and a motor case 14 which structures an outer peripheral face of the motor part 7 .
- the rotor 11 is disposed on an inner peripheral side with respect to the stator 12 .
- the motor structuring the motor part 7 is an inner rotor type motor.
- the partition member 13 is formed of resin material. Further, the partition member 13 is formed in a bottomed cylindrical tube shape with a flange and is disposed between the rotor 11 and the stator 12 .
- the flange part 13 a of the partition member 13 is abutted with a flange part 9 c of the pump case 9
- the pump chamber 10 is formed of an inside of the pump case 9 and an inside of the partition member 13 .
- a seal member (“O”-ring) 15 is disposed between the flange part 9 c and the flange part 13 a for securing sealability of the pump chamber 10 .
- the rotor 11 includes a drive magnet 16 and a cylindrical shaped sleeve 17 .
- a rear end side portion of the impeller member 5 is a holding part 5 b formed in a substantially cylindrical shape.
- the holding part 5 b structures a part of the rotor 11 , and the drive magnet 16 is fixed to an outer peripheral face of the holding part 5 b and the sleeve 17 is fixed to an inner peripheral face of the holding part 5 b .
- the rotor 11 is rotatably supported by a fixed shaft 18 which is fixed to the pump case 9 and the partition member 13 with the front and rear direction as an axial direction.
- Two thrust bearings 19 are attached to the fixed shaft 18 so as to sandwich the sleeve 17 in the front and rear direction.
- the rotor 11 is disposed in an inside of the pump chamber 10 .
- the stator 12 includes a drive coil 22 , a stator core 23 and a bobbin 24 , and is formed in a substantially cylindrical tube shape as a whole.
- the stator core 23 is, for example, a laminated core which is formed by laminating thin magnetic plates made of magnetic material, and the stator core 23 is provided with an outer peripheral core part 23 a in a substantially cylindrical shape which structures an outer peripheral face of the stator core 23 and a plurality of salient pole parts 23 b which protrude from the outer peripheral core part 23 a to an inner side in a radial direction (see FIG. 5 ).
- a width of the outer peripheral core part 23 a in a front and rear direction is set to be equal to a width of the salient pole part 23 b in the front and rear direction.
- the bobbin 24 is formed in a tube shape with flanges which is provided with flange parts at both ends.
- the drive coil 22 is wound around an outer peripheral face of the bobbin 24 .
- the bobbin 24 around which the drive coil 22 is wound is fitted to the salient pole part 23 b from an inner side in a radial direction, and the drive coil 22 is wound around the salient pole part 23 b through the bobbin 24 . Further, the bobbins 24 around which the drive coil 22 is wound are disposed on an inner peripheral side with respect to the outer peripheral core part 23 a . Both end parts of the drive coil 22 are electrically connected with terminal pins 25 which are fixed to the bobbin 24 .
- Circuit boards 26 and 27 provided with a drive circuit and a control circuit are fixed to a rear face side of a bottom part 13 b of the partition member 13 and are disposed on a rear end side of the stator 12 .
- the circuit board 26 and the circuit board 27 are electrically connected with each other.
- the terminal pin 25 is electrically connected with the circuit board 26 by soldering or the like.
- Various electronic components are mounted on the circuit board 27 .
- a connector 28 for supplying an electric current to the drive coil 22 is mounted on the circuit board 27 . In FIG. 6 , the circuit boards 26 and 27 and the connector 28 are not shown. Further, an electric current is supplied to the drive coil 22 through the connector 28 and, in addition, exchanges of various signals and the like are performed through the connector 28 .
- the motor case 14 is formed of resin. Specifically, the motor case 14 is formed of BMC (Bulk Molding Compound). Further, the motor case 14 is integrally molded with the stator 12 and the partition member 13 so as to cover an outer peripheral side and a rear face side of the stator 12 and is formed in a substantially bottomed cylindrical tube shape. A die (not shown) which is used for integrally molding the stator 12 and the like with the motor case 14 is structured so as to be divided in the front and rear direction, and an outer peripheral face of the motor case 14 is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case 14 from the die.
- BMC Second Molding Compound
- the outer peripheral face of the motor case 14 is an outer peripheral face of the motor part 7
- the outer peripheral face of the motor part 7 is formed in a substantially circular truncated cone face shape.
- the outer peripheral face of the motor part 7 is formed in a substantially circular truncated cone face shape whose outer diameter gradually becomes smaller toward the rear end side of the motor case 14 .
- the connector 28 is mounted on the circuit board 27 and the circuit boards 26 and 27 are fixed to the partition member 13 .
- the circuit boards 26 and 27 are integrated with the motor case 14 so as to be covered by the motor case 14 when the stator 12 and the like and the motor case 14 are integrally molded.
- the connector 28 is integrated with the motor case 14 so that a part of the connector 28 is protruded from the outer peripheral face of the motor case 14 .
- a connector arrangement part 14 a where the connector 28 is disposed and a gate mark formed part 14 c where a gate mark 14 b , i.e., a mark of a gate of a die used when the stator 12 and the like and the motor case 14 are integrally molded is formed are formed on an outer peripheral side of the motor case 14 so as to protrude to an outer side in the radial direction.
- a gate mark 14 b i.e., a mark of a gate of a die used when the stator 12 and the like and the motor case 14 are integrally molded is formed are formed on an outer peripheral side of the motor case 14 so as to protrude to an outer side in the radial direction.
- four protruded parts 14 d for screws for fixing the motor part 7 to the pump part 6 are formed on the outer peripheral face of the motor case 14 so as to protrude from the outer peripheral face of the motor part 7 to an outer side in the radial direction.
- the connector arrangement part 14 a is protruded from the outer peripheral face of the motor part 7 to the left direction.
- the gate mark formed part 14 c is protruded to the right direction.
- the gate mark formed part 14 c where the gate mark 14 b is formed is formed on an opposite side to the connector arrangement part 14 a interposing an axial center of the motor part 7 therebetween.
- a shape of the motor case 14 when viewed in the axial direction of the motor part 7 is formed to be line symmetric with respect to a line connecting the center of the connector 28 with the center of the gate mark 14 b which is parallel to the right and left direction.
- the connector arrangement part 14 a and the gate mark formed part 14 c are formed on almost entire region of the motor case 14 in the front and rear direction. Further, a left side face of the connector arrangement part 14 a and a right side face of the gate mark formed part 14 c are substantially parallel to the “Z-X” plane which is structured of the “Z” direction and the “X” direction.
- the gate mark 14 b is formed so as to slightly protrude to the right direction from the right side face (surface) of the gate mark formed part 14 c . Further, the gate mark 14 b is formed at a center position in the upper and lower direction of the right side face of the gate mark formed part 14 c and is formed in a predetermined range in the front and rear direction of the right side face of the gate mark formed part 14 c . As shown in FIG. 6 , a part of the gate mark 14 b is overlapped with the outer peripheral core part 23 a when viewed in the right and left direction. In other words, a part of the gate mark 14 b is overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7 . Specifically, a part on the front end side of the gate mark 14 b is overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7 .
- protruded parts 14 d for screws are formed so as to respectively protrude from the outer peripheral face of the motor part 7 toward an obliquely right upper direction, an obliquely right lower direction, an obliquely left upper direction and an obliquely left lower direction.
- the protruded part 14 d for a screw is formed with a screw hole 14 e with which a screw 30 is engaged.
- the motor part 7 is fixed to the pump part 6 by four screws 30 .
- the fixing base 3 is formed by bending one metal plate made of a steel plate or the like. Further, the fixing base 3 is structured of an upper face part 3 a , which is formed in a substantially rectangular shape and is provided with a flat face as a motor support part, side face parts 3 b which are disposed on both sides in the front and rear direction and are formed so as to be bent from a pair of opposite sides of the upper face part 3 a to a lower direction opposite to the direction that the pump 2 is placed, and bottom face parts 3 c forming flanges which are formed so as to be bent from lower ends of the side face parts 3 b to an outer direction in the front and rear direction.
- an upper face part 3 a which is formed in a substantially rectangular shape and is provided with a flat face as a motor support part
- side face parts 3 b which are disposed on both sides in the front and rear direction and are formed so as to be bent from a pair of opposite sides of the upper face part 3 a to a lower direction opposite to the direction that the pump 2
- the fixing base 3 is formed in a substantially rectangular groove shape in which the upper face part 3 a is a bottom face and the side face parts 3 b are wall faces.
- the bottom face parts 3 c are fixed to a frame or the like of a predetermined device in which the pump 2 is used.
- the side face part 3 b disposed on the front side of the two side face parts 3 b is fixed by screws 31 to the fixed part 9 d of the pump case 9 which is located on a lower side relative to the outer peripheral face of the motor part 7 .
- the fixed part 9 d is located on a lower side relative to the outer peripheral face of the motor case 14 and, in a state that the fixed part 9 d is fixed to the side face part 3 b , a space is formed between the upper face part 3 a and the outer peripheral face of the motor part 7 facing the upper face part 3 a .
- the upper face part 3 a is disposed on a lower side with respect to the motor part 7 .
- a buffer member 34 is disposed between the lower end of the motor part 7 and the upper face of the upper face part 3 a .
- an abutting part 14 f provided on a lower end of the motor part 7 which is provided on a portion except the connector arrangement part 14 a , the gate mark 14 b , the gate mark formed part 14 c and the protruded parts 14 d for screws protruded to an outer side in the radial direction from the cylindrical outer peripheral face of the motor part 7 , and a flat face of the upper face part 3 a are disposed so as to face each other and the buffer member 34 is disposed between the abutting part 14 f of the motor part 7 and the upper face part 3 a .
- the connector arrangement part 14 a , the gate mark 14 b , the gate mark formed part 14 c and the protruded parts 14 d for screws protruded to an outer side in the radial direction from the cylindrical outer peripheral face of the motor part 7 are provided at positions so as not to contact with the buffer member 34 and the upper face part 3 a .
- the abutting part 14 f formed of a flat outer peripheral face of the motor part 7 and the buffer member 34 are disposed so as to face each other and thus the motor part 7 and the fixing base 3 can be closely disposed and it is suitable to reduce the size of the device.
- the outlet port 9 a is provided so as to protrude toward an upper side with respect to the outer peripheral face of the motor part 7 and the abutting part 14 f is provided on the outer peripheral face on a lower side of the motor part 7
- the fixed part 9 d is provided so as to protrude toward a lower side with respect to the outer peripheral face of the motor part 7 . Therefore, a height of the pump 2 fixed to the fixing base 3 can be structured low and thus it is suitable to reduce the size.
- a buffer member 35 as a second buffer member is disposed between a front face of the side face part 3 b disposed on the front side and a rear face of the fixed part 9 d.
- the buffer member 34 is formed of elastic material having elasticity.
- the buffer member 34 in this embodiment is, for example, a rubber bushing formed of rubber.
- the buffer member 34 is structured of a large diameter part 34 a formed in a columnar shape and a small diameter part 34 b as an engaging projection which is formed in a columnar shape whose outer diameter is smaller than that of the large diameter part 34 a .
- the buffer member 34 is formed in a stepped columnar shape.
- the small diameter part 34 b is engaged with a circular engaging hole formed in the upper face part 3 a of the fixing base 3 and the large diameter part 34 a is disposed on the upper face side of the upper face part 3 a . As shown in FIG.
- a space is formed between the motor part 7 and the upper face part 3 a . Further, the lower end of the motor part 7 and the upper face of the large diameter part 34 a are contacted with each other and the upper face of the upper face part 3 a and the under face of the large diameter part 34 a are contacted with each other.
- the engaging hole formed in the upper face part 3 a penetrates through the upper face part 3 a and a lower end side of the small diameter part 34 b is protruded to a lower side relative to the under face of the upper face part 3 a.
- the buffer member 35 is formed of elastic material having elasticity.
- the buffer member 35 in this embodiment is, for example, a rubber plate formed of rubber and is formed in a flat plate shape.
- the buffer member 35 is fixed between the fixed part 9 d and the side face part 3 b by the screw 31 in a state that the buffer member 35 is sandwiched between the fixed part 9 d and the side face part 3 b.
- the buffer member 34 is disposed between the upper face part 3 a of the fixing base 3 and the motor part 7 . Therefore, in this embodiment, vibration transmitted from the motor part 7 to the upper face part 3 a can be suppressed by the buffer member 34 . Further, in this embodiment, the buffer member 35 is disposed between the side face part 3 b of the fixing base 3 and the fixed part 9 d of the pump case 9 and thus vibration of the motor part 7 can be suppressed from being transmitted to the side face part 3 b through the pump part 6 by the buffer member 35 .
- the buffer member 34 is disposed between the upper face part 3 a and the motor part 7 and thus, even when the fixed part 9 d of the pump case 9 fixed to the side face part 3 b of the fixing base 3 is deformed with a lapse of time, the motor part 7 can be prevented from contacting with the upper face part 3 a . Therefore, in this embodiment, even when the fixed part 9 d is deformed with a lapse of time, transmission of vibration from the motor part 7 to the fixing base 3 can be suppressed.
- the buffer member 34 is disposed between the upper face part 3 a and the motor part 7 and thus, even when the outer peripheral face of the motor part 7 is formed in a substantially circular truncated cone face shape having a draft angle, the motor part 7 can be supported by the buffer member 34 in a stable state.
- the small diameter part 34 b of the buffer member 34 is engaged with the engaging hole formed in the upper face part 3 a . Therefore, in this embodiment, positional displacement of the buffer member 34 with respect to the upper face part 3 a can be prevented.
- the gate mark formed part 14 c where the gate mark 14 b is formed is formed on an opposite side to the connector arrangement part 14 a so as to interpose the axial center of the motor part 7 therebetween, and a shape of the motor case 14 when viewed in the axial line direction of the motor part 7 is formed to be line symmetric with respect to a line connecting the center of the connector 28 with the center of the gate mark 14 b which is parallel to the right and left direction. Therefore, in this embodiment, when the stator 12 and the like and the motor case 14 are to be integrally molded, resin is easily flowed uniformly from a gate of the die toward a portion where the connector 28 is disposed.
- the gate mark formed part 14 c is formed so as to protrude to an outer side in the radial direction of the motor part 7 and a wall thickness of the gate mark formed part 14 c is set to be thicker than that of the other portion of the motor case 14 except the connector arrangement part 14 a and the protruded parts 14 d for screws. Therefore, in this embodiment, when the stator 12 and the like and the motor case 14 are to be integrally molded, resin is easily flowed into an inside of the die from the gate.
- a part of the gate mark 14 b is overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7 . Therefore, when the stator 12 and the like and the motor case 14 are to be integrally molded, injection pressure of resin is hard to be directly applied to the drive coils 22 and the like. As a result, according to this embodiment, when the stator 12 and the like and the motor case 14 are to be integrally molded, damage of the drive coils 22 can be prevented.
- the motor case 14 is formed of BMC. Therefore, according to this embodiment, heat radiation property and vibration absorption property of the motor case 14 can be enhanced.
- the buffer member 34 is formed in a stepped columnar shape comprised of the large diameter part 34 a and the small diameter part 34 b .
- the present invention is not limited to this embodiment.
- the buffer member 34 may be formed in a columnar shape comprised of only the large diameter part 34 a or may be formed in a flat plate shape or in a block shape.
- the buffer member 34 is fixed to an upper face of the upper face part 3 a of the fixing base 3 by an adhesive or the like.
- the buffer member 35 is disposed between the side face part 3 b of the fixing base 3 and the fixed part 9 d of the pump case 9 .
- the present invention is not limited to this embodiment.
- no buffer member 35 may be disposed between the side face part 3 b and the fixed part 9 d.
- the motor case 14 is formed of BMC, but the motor case 14 may be formed of resin other than BMC. Further, in the embodiment described above, when viewed in the front and rear direction which is the axial direction of the motor part 7 , the gate mark 14 b is formed on the opposite side to the connector arrangement part 14 a so as to interpose the axial center of the motor part 7 therebetween, but the gate mark 14 b may be formed at another arbitrary position.
- a part of the gate mark 14 b is overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7 .
- the present invention is not limited to this embodiment.
- all of the gate mark 14 b may be overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7 .
- damage of the drive coils 22 and the like can be prevented effectively.
- it may be structured that the gate mark 14 b and the outer peripheral core part 23 a are not overlapped with each other in the radial direction of the motor part 7 .
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Abstract
Description
- This is the U.S. national stage of application No. PCT/JP2013/065641 filed on Jun. 6, 2013. Priority under 35 U.S.C. §119(a) and 35 U.S.C. §365(b) is claimed from Japanese Application No. 2012-136593, filed Jun. 18, 2012, the disclosure of which are also incorporated herein by reference.
- The present invention relates to a pump fixing structure for fixing a pump to a fixing base. Further, the present invention relates to a pump which structures the pump fixing structure.
- Conventionally, a pump fixing device for fixing a pump to a base has been known (see, for example, Patent Literature 1). In
Patent Literature 1, a pump is fixed to a base through an abutting part. Further, the pump includes a pump part having an outlet port and an inlet port for fluid, and a motor part for rotating an impeller which is disposed in an inside of the pump part. An outer peripheral face of the motor part is formed in a cylindrical face shape. The abutting part and the base are formed by bending a metal plate in a predetermined shape. Further, the abutting part is structured of a curved face part in a circular arc shape to which an outer peripheral face of the motor part formed in a cylindrical face shape is fixed, side face parts which are bent to a lower direction from both ends of the curved face part, and bottom face parts extended from lower ends of the side face parts in a horizontal direction. The base is structured of an upper face part to which the bottom face parts of the abutting part are fixed and side face parts which are bent from both ends of the upper face part to a lower direction. - Further, conventionally, as a pump including a pump part having an outlet port and an inlet port for fluid and a motor part for rotating an impeller which is disposed in an inside of the pump part, a pump has been known which includes a stator structuring a motor part and a mold part made of resin which covers the stator (see, for example, Patent Literature 2). In the pump described in Patent Literature 2, the mold part is integrally formed with the stator and structures an outer peripheral face of the motor part. In a pump having a mold part which is integrally formed with a stator like the pump described in Patent Literature 2, an outer peripheral face of the motor part is commonly formed in a circular truncated cone face shape having a draft angle for drawing out the mold part from a die which is used when the stator and the mold part are integrally molded.
- [PTL 1] Examined Utility Model Application Publication Hei 8-7199
- [PTL 2] Japanese Patent Laid-Open No. 2008-109848
- In the pump described in
Patent Literature 1, a rotor structuring the motor part is rotated and thus vibration is easily occurred in the motor part. On the other hand, in this pump, an outer peripheral face of the motor part is fixed to the curved face part of the abutting part which is formed of a metal plate and the bottom face parts of the abutting part are fixed to the base and thus vibration occurred in the motor part is easily transmitted to the base through the abutting part. Therefore, in order to suppress transmission of vibration from the motor part to the base, it is preferable that a space is provided between an upper face part of the base and the motor part and, for example, the pump part is fixed to a side face part of the base. However, even in this case, when a fixed part of the pump part fixed to the side face part of the base is deformed with a lapse of time, the upper face part of the base and the motor part may be contacted with each other and thus vibration of the motor part may be transmitted to the base. - In view of the problem described above, at least an embodiment of the present invention provides a pump fixing structure for fixing a pump having a pump part and a motor part to a fixing base, the pump fixing structure being capable of suppressing transmission of vibration from the motor part to the fixing base even when a fixed part of the pump part which is fixed to the fixing base is deformed due to a lapse of time. Further, at least an embodiment of the present invention provides a pump which structures the pump fixing structure.
- To achieve the above, at least an embodiment of the present invention provides a pump fixing structure for fixing a pump to a fixing base. The pump includes a pump part which has an outlet port and an inlet port for fluid and is disposed with an impeller in its inside, and a motor part for rotating the impeller. The motor part includes a stator having a drive coil and a stator core around which the drive coil is wound, and a motor case which is formed of resin and is integrally molded with the stator to structure an outer peripheral face of the motor part. The outer peripheral face of the motor part is formed in a substantially circular truncated cone face shape having a draft angle for drawing the motor case from a die used when the stator and the motor case are integrally molded. The pump part is provided with a fixed part which is fixed to the fixing base, the fixing base is formed by bending a metal plate and is provided with a motor support part disposed on a lower side with respect to the motor part, and a buffer member having elasticity is disposed between the motor part and the motor support part.
- In the pump fixing structure in accordance with at least an embodiment of the present invention, a buffer member having elasticity is disposed between the motor support part disposed on a lower side with respect to the motor part and the motor part. Therefore, according to at least an embodiment of the present invention, even when the fixed part of the pump part which is fixed to the fixing base is deformed with a lapse of time, the motor part is prevented from contacting with the motor support part of the fixing base. Therefore, in at least an embodiment of the present invention, even when the fixed part of the pump part which is fixed to the fixing base is deformed with a lapse of time, transmission of vibration from the motor part to the fixing base is suppressed.
- Further, in the pump fixing structure in accordance with at least an embodiment of the present invention, a buffer member is disposed between the motor support part disposed on a lower side with respect to the motor part and the motor part. Therefore, even when an outer peripheral face of the motor part is formed in a substantially circular truncated cone face shape having a draft angle, the motor part is supported by the buffer member in a stable state.
- In at least an embodiment of the present invention, for example, the fixing base is formed in a substantially angular groove shape which is provided with the motor support part formed in a substantially rectangular shape and side face parts which are bent in a lower direction from each of a pair of opposite sides of the motor support part formed in the substantially rectangular shape, the fixed part is fixed to one of two side face parts, a space is formed between the motor part and the motor support part, and the motor part and the motor support part are contacted with the buffer member. In this case, it is preferable that a second buffer member having elasticity is disposed between the side face part and the fixed part. According to this structure, vibration of the motor part is suppressed from being transmitted to the fixing base through the pump part by the second buffer member.
- In at least an embodiment of the present invention, it is preferable that the motor support part is formed with an engaging hole with which a part of the buffer member is engaged, and the buffer member is formed with an engaging projection which is engaged with the engaging hole. According to this structure, positional displacement of the buffer member with respect to the motor support part is prevented.
- In a pump which structures the pump fixing structure in accordance with at least an embodiment of the present invention, it is preferable that the motor part includes a connector for supplying an electric current to the drive coil, the connector is integrated with the motor case so as to protrude from the outer peripheral face of the motor case when the stator and the motor case are integrally molded and, when viewed in an axial direction of the motor part, a gate mark which is a mark of a gate of the die is formed on the motor case on an opposite side to the connector so as to interpose an axial center of the motor part therebetween. In this case, a shape of the motor case when viewed in an axial direction of the motor part can be set to be line symmetric with respect to a line connecting the center of the connector and the gate mark. Therefore, when the stator and the motor case are to be integrally molded, resin is easily flowed uniformly from the gate toward a portion where the connector is disposed.
- In at least an embodiment of the present invention, it is preferable that the motor case is formed with a gate mark formed part where the gate mark is formed on its surface so as to protrude to an outer side in a radial direction of the motor part. According to this structure, a wall thickness of the gate mark formed part can be made larger than other portions and thus, when the stator and the motor case are to be integrally molded, resin is easily flowed from the gate into an inside of the die.
- In a pump which structures the pump fixing structure in accordance with at least an embodiment of the present invention, it is preferable that the motor case is formed of BMC (Bulk Molding Compound). In this case, heat radiation property and vibration absorption property of the motor case are enhanced.
- In a pump which structures the pump fixing structure in accordance with at least an embodiment of the present invention, the motor part includes a rotor which is disposed on an inner peripheral side with respect to the stator, the stator core is provided with an outer peripheral core part in a substantially cylindrical shape which is disposed on an outer peripheral side with respect to the drive coil, and at least a part of a gate mark which is a mark of a gate of the die and at least a part of the outer peripheral core part are overlapped with each other in a radial direction of the motor part. In this case, when the stator and the motor case are to be integrally molded, injection pressure of the resin is hard to be directly applied to the drive coil and the like. Therefore, when the
stator 12 and themotor case 14 are to be integrally molded, damage of thedrive coils 22 and the like can be prevented. - As described above, in the pump fixing structure in accordance with at least an embodiment of the present invention, even when the fixed part of the pump part which is fixed to the fixing base is deformed with a lapse of time, transmission of vibration from the motor part to the fixing base is suppressed. Further, in the pump in accordance with at least an embodiment of the present invention, effects can be attained such that, when the stator and the motor case are to be integrally molded, resin is easily flowed uniformly from the gate toward a portion where the connector is disposed.
- Embodiments will now be described, by way of example only, with reference to the accompanying drawings which are meant to be exemplary, not limiting, and wherein like elements are numbered alike in several Figures, in which:
-
FIG. 1 is a perspective view showing a pump fixing structure in accordance with an embodiment of the present invention. -
FIG. 2 is a side view showing the pump fixing structure inFIG. 1 which is viewed in another direction. -
FIG. 3 is a rear view showing the pump fixing structure which is viewed in the “E-E” direction inFIG. 2 . -
FIG. 4 is a cross-sectional view showing the “F-F” cross section inFIG. 3 . -
FIG. 5 is a perspective view showing a state that a stator shown inFIG. 4 is taken out from a motor case. -
FIG. 6 is a side view showing a state that the stator and the motor case shown inFIG. 5 are integrated with each other. - At least an embodiment of the present invention will be described below with reference to the accompanying drawings.
-
FIG. 1 is a perspective view showing apump fixing structure 1 in accordance with an embodiment of the present invention.FIG. 2 is a side view showing thepump fixing structure 1 inFIG. 1 which is viewed in another direction.FIG. 3 is a rear view showing thepump fixing structure 1 which is viewed in the “E-E” direction inFIG. 2 .FIG. 4 is a cross-sectional view showing the “F-F” cross section inFIG. 3 .FIG. 5 is a perspective view showing a state that astator 12 shown inFIG. 4 is taken out from amotor case 14.FIG. 6 is a side view showing a state that thestator 12 and themotor case 14 shown inFIG. 5 are integrated with each other. - The
pump fixing structure 1 in this embodiment is a structure for fixing a pump 2 to a fixingbase 3 and includes the pump 2 and the fixingbase 3 to which the pump 2 is fixed. In the following descriptions, as shown inFIGS. 2 and 3 , in respective three directions perpendicular to each other, an axial line direction of a motor part 7 is referred to as an “X” direction, a direction which is perpendicular to the axial line direction of the motor part 7 and parallel to anupper face part 3 a of the fixingbase 3 is referred to as a “Y” direction, and a direction which is perpendicular to the axial line direction of the motor part 7 and perpendicular to theupper face part 3 a of the fixingbase 3 is referred to as a “Z” direction. Further, the “X” direction is referred to as a front and rear direction, the “Y” direction is referred to as a right and left direction, and the “Z” direction is referred to as an upper and lower direction. Further, inFIGS. 2 and 3 and the like, the “X1” direction side is referred to as a “front” side, the “X2” direction side is a “rear” (back) side, the “Y1” direction side is a “right” side, the “Y2” direction side is a “left” side, the “Z1” direction side is an “upper” side, and the “Z2” direction side is a “lower” side. - The pump 2 is a pump which is referred to as a canned pump, which includes a
pump part 6 in which an impeller 5 a (seeFIG. 4 ) is disposed in its inside and a motor part 7 for rotating the impeller 5 a. Thepump part 6 structures a front end side portion of the pump 2 in an axial line direction of the motor part 7, and the motor part 7 structures a rear end side portion of the pump 2 in the axial line direction of the motor part 7. The impeller 5 a structures a front end side portion in an axial line direction of an impeller member 5. - The
pump part 6 includes a pump case 9 which is formed with an outlet port 9 a and aninlet port 9 b for fluid. The outlet port 9 a is formed in a cylindrical tube shape which protrudes toward an obliquely left upper direction and theinlet port 9 b is formed in a cylindrical tube shape which protrudes toward a front direction. A rear end side of the pump case 9 is formed with aflange part 9 c for fixing the motor part 7 to thepump part 6 and for fixing the pump 2 to the fixingbase 3. A lower end side of theflange part 9 c is formed as afixed part 9 d which is fixed to the fixingbase 3. An inside of the pump case 9 is a part of apump chamber 10 as shown inFIG. 4 . - The motor part 7 includes a rotor 11, a
stator 12, apartition member 13 which defines thepump chamber 10 together with the pump case 9, and amotor case 14 which structures an outer peripheral face of the motor part 7. The rotor 11 is disposed on an inner peripheral side with respect to thestator 12. In other words, the motor structuring the motor part 7 is an inner rotor type motor. - The
partition member 13 is formed of resin material. Further, thepartition member 13 is formed in a bottomed cylindrical tube shape with a flange and is disposed between the rotor 11 and thestator 12. The flange part 13 a of thepartition member 13 is abutted with aflange part 9 c of the pump case 9, and thepump chamber 10 is formed of an inside of the pump case 9 and an inside of thepartition member 13. A seal member (“O”-ring) 15 is disposed between theflange part 9 c and the flange part 13 a for securing sealability of thepump chamber 10. - The rotor 11 includes a
drive magnet 16 and a cylindrical shapedsleeve 17. A rear end side portion of the impeller member 5 is a holdingpart 5 b formed in a substantially cylindrical shape. The holdingpart 5 b structures a part of the rotor 11, and thedrive magnet 16 is fixed to an outer peripheral face of the holdingpart 5 b and thesleeve 17 is fixed to an inner peripheral face of the holdingpart 5 b. The rotor 11 is rotatably supported by a fixedshaft 18 which is fixed to the pump case 9 and thepartition member 13 with the front and rear direction as an axial direction. Twothrust bearings 19 are attached to the fixedshaft 18 so as to sandwich thesleeve 17 in the front and rear direction. The rotor 11 is disposed in an inside of thepump chamber 10. - The
stator 12 includes adrive coil 22, astator core 23 and abobbin 24, and is formed in a substantially cylindrical tube shape as a whole. Thestator core 23 is, for example, a laminated core which is formed by laminating thin magnetic plates made of magnetic material, and thestator core 23 is provided with an outer peripheral core part 23 a in a substantially cylindrical shape which structures an outer peripheral face of thestator core 23 and a plurality ofsalient pole parts 23 b which protrude from the outer peripheral core part 23 a to an inner side in a radial direction (seeFIG. 5 ). A width of the outer peripheral core part 23 a in a front and rear direction is set to be equal to a width of thesalient pole part 23 b in the front and rear direction. - The
bobbin 24 is formed in a tube shape with flanges which is provided with flange parts at both ends. Thedrive coil 22 is wound around an outer peripheral face of thebobbin 24. Thebobbin 24 around which thedrive coil 22 is wound is fitted to thesalient pole part 23 b from an inner side in a radial direction, and thedrive coil 22 is wound around thesalient pole part 23 b through thebobbin 24. Further, thebobbins 24 around which thedrive coil 22 is wound are disposed on an inner peripheral side with respect to the outer peripheral core part 23 a. Both end parts of thedrive coil 22 are electrically connected withterminal pins 25 which are fixed to thebobbin 24. -
Circuit boards bottom part 13 b of thepartition member 13 and are disposed on a rear end side of thestator 12. Thecircuit board 26 and thecircuit board 27 are electrically connected with each other. Theterminal pin 25 is electrically connected with thecircuit board 26 by soldering or the like. Various electronic components are mounted on thecircuit board 27. Further, aconnector 28 for supplying an electric current to thedrive coil 22 is mounted on thecircuit board 27. InFIG. 6 , thecircuit boards connector 28 are not shown. Further, an electric current is supplied to thedrive coil 22 through theconnector 28 and, in addition, exchanges of various signals and the like are performed through theconnector 28. - The
motor case 14 is formed of resin. Specifically, themotor case 14 is formed of BMC (Bulk Molding Compound). Further, themotor case 14 is integrally molded with thestator 12 and thepartition member 13 so as to cover an outer peripheral side and a rear face side of thestator 12 and is formed in a substantially bottomed cylindrical tube shape. A die (not shown) which is used for integrally molding thestator 12 and the like with themotor case 14 is structured so as to be divided in the front and rear direction, and an outer peripheral face of themotor case 14 is formed in a substantially circular truncated cone face shape having a draft angle for drawing themotor case 14 from the die. In other words, since the outer peripheral face of themotor case 14 is an outer peripheral face of the motor part 7, the outer peripheral face of the motor part 7 is formed in a substantially circular truncated cone face shape. Specifically, the outer peripheral face of the motor part 7 is formed in a substantially circular truncated cone face shape whose outer diameter gradually becomes smaller toward the rear end side of themotor case 14. - In this embodiment, when the
stator 12 and the like and themotor case 14 are to be integrally molded, theconnector 28 is mounted on thecircuit board 27 and thecircuit boards partition member 13. Thecircuit boards motor case 14 so as to be covered by themotor case 14 when thestator 12 and the like and themotor case 14 are integrally molded. Further, when thestator 12 and the like and themotor case 14 are integrally molded, theconnector 28 is integrated with themotor case 14 so that a part of theconnector 28 is protruded from the outer peripheral face of themotor case 14. - A
connector arrangement part 14 a where theconnector 28 is disposed and a gate mark formedpart 14 c where agate mark 14 b, i.e., a mark of a gate of a die used when thestator 12 and the like and themotor case 14 are integrally molded is formed are formed on an outer peripheral side of themotor case 14 so as to protrude to an outer side in the radial direction. Further, four protrudedparts 14 dfor screws for fixing the motor part 7 to thepump part 6 are formed on the outer peripheral face of themotor case 14 so as to protrude from the outer peripheral face of the motor part 7 to an outer side in the radial direction. - The
connector arrangement part 14 a is protruded from the outer peripheral face of the motor part 7 to the left direction. On the other hand, the gate mark formedpart 14 c is protruded to the right direction. In other words, when viewed in the front and rear direction which is an axial line direction of the motor part 7, as shown inFIG. 3 , the gate mark formedpart 14 c where thegate mark 14 b is formed is formed on an opposite side to theconnector arrangement part 14 a interposing an axial center of the motor part 7 therebetween. In this embodiment, a shape of themotor case 14 when viewed in the axial direction of the motor part 7 is formed to be line symmetric with respect to a line connecting the center of theconnector 28 with the center of thegate mark 14 b which is parallel to the right and left direction. Theconnector arrangement part 14 a and the gate mark formedpart 14 c are formed on almost entire region of themotor case 14 in the front and rear direction. Further, a left side face of theconnector arrangement part 14 a and a right side face of the gate mark formedpart 14 c are substantially parallel to the “Z-X” plane which is structured of the “Z” direction and the “X” direction. - The
gate mark 14 b is formed so as to slightly protrude to the right direction from the right side face (surface) of the gate mark formedpart 14 c. Further, thegate mark 14 b is formed at a center position in the upper and lower direction of the right side face of the gate mark formedpart 14 c and is formed in a predetermined range in the front and rear direction of the right side face of the gate mark formedpart 14 c. As shown inFIG. 6 , a part of thegate mark 14 b is overlapped with the outer peripheral core part 23 a when viewed in the right and left direction. In other words, a part of thegate mark 14 b is overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7. Specifically, a part on the front end side of thegate mark 14 b is overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7. - Four protruded
parts 14 d for screws are formed so as to respectively protrude from the outer peripheral face of the motor part 7 toward an obliquely right upper direction, an obliquely right lower direction, an obliquely left upper direction and an obliquely left lower direction. Theprotruded part 14 d for a screw is formed with ascrew hole 14 e with which ascrew 30 is engaged. The motor part 7 is fixed to thepump part 6 by fourscrews 30. - The fixing
base 3 is formed by bending one metal plate made of a steel plate or the like. Further, the fixingbase 3 is structured of anupper face part 3 a, which is formed in a substantially rectangular shape and is provided with a flat face as a motor support part, side faceparts 3 b which are disposed on both sides in the front and rear direction and are formed so as to be bent from a pair of opposite sides of theupper face part 3 a to a lower direction opposite to the direction that the pump 2 is placed, andbottom face parts 3 c forming flanges which are formed so as to be bent from lower ends of the side faceparts 3 b to an outer direction in the front and rear direction. The fixingbase 3 is formed in a substantially rectangular groove shape in which theupper face part 3 a is a bottom face and the side faceparts 3 b are wall faces. Thebottom face parts 3 c are fixed to a frame or the like of a predetermined device in which the pump 2 is used. - The side face
part 3 b disposed on the front side of the twoside face parts 3 b is fixed byscrews 31 to thefixed part 9 d of the pump case 9 which is located on a lower side relative to the outer peripheral face of the motor part 7. Thefixed part 9 d is located on a lower side relative to the outer peripheral face of themotor case 14 and, in a state that thefixed part 9 d is fixed to the side facepart 3 b, a space is formed between theupper face part 3 a and the outer peripheral face of the motor part 7 facing theupper face part 3 a. Theupper face part 3 a is disposed on a lower side with respect to the motor part 7. Abuffer member 34 is disposed between the lower end of the motor part 7 and the upper face of theupper face part 3 a. In other words, an abuttingpart 14 f provided on a lower end of the motor part 7, which is provided on a portion except theconnector arrangement part 14 a, thegate mark 14 b, the gate mark formedpart 14 c and the protrudedparts 14 d for screws protruded to an outer side in the radial direction from the cylindrical outer peripheral face of the motor part 7, and a flat face of theupper face part 3 a are disposed so as to face each other and thebuffer member 34 is disposed between theabutting part 14 f of the motor part 7 and theupper face part 3 a. In a state that the abuttingpart 14 f and thebuffer member 34 are abutted with each other, theconnector arrangement part 14 a, thegate mark 14 b, the gate mark formedpart 14 cand the protrudedparts 14 d for screws protruded to an outer side in the radial direction from the cylindrical outer peripheral face of the motor part 7 are provided at positions so as not to contact with thebuffer member 34 and theupper face part 3 a. As described above, the abuttingpart 14 f formed of a flat outer peripheral face of the motor part 7 and thebuffer member 34 are disposed so as to face each other and thus the motor part 7 and the fixingbase 3 can be closely disposed and it is suitable to reduce the size of the device. In addition, in this embodiment, the outlet port 9 a is provided so as to protrude toward an upper side with respect to the outer peripheral face of the motor part 7 and theabutting part 14 f is provided on the outer peripheral face on a lower side of the motor part 7, and thefixed part 9 d is provided so as to protrude toward a lower side with respect to the outer peripheral face of the motor part 7. Therefore, a height of the pump 2 fixed to the fixingbase 3 can be structured low and thus it is suitable to reduce the size. Further, abuffer member 35 as a second buffer member is disposed between a front face of the side facepart 3 b disposed on the front side and a rear face of thefixed part 9 d. - The
buffer member 34 is formed of elastic material having elasticity. Thebuffer member 34 in this embodiment is, for example, a rubber bushing formed of rubber. Thebuffer member 34 is structured of alarge diameter part 34 a formed in a columnar shape and asmall diameter part 34 b as an engaging projection which is formed in a columnar shape whose outer diameter is smaller than that of thelarge diameter part 34 a. Thebuffer member 34 is formed in a stepped columnar shape. Thesmall diameter part 34 b is engaged with a circular engaging hole formed in theupper face part 3 a of the fixingbase 3 and thelarge diameter part 34 a is disposed on the upper face side of theupper face part 3 a. As shown inFIG. 2 , a space is formed between the motor part 7 and theupper face part 3 a. Further, the lower end of the motor part 7 and the upper face of thelarge diameter part 34 a are contacted with each other and the upper face of theupper face part 3 a and the under face of thelarge diameter part 34 a are contacted with each other. In this embodiment, the engaging hole formed in theupper face part 3 a penetrates through theupper face part 3 a and a lower end side of thesmall diameter part 34 b is protruded to a lower side relative to the under face of theupper face part 3 a. - The
buffer member 35 is formed of elastic material having elasticity. Thebuffer member 35 in this embodiment is, for example, a rubber plate formed of rubber and is formed in a flat plate shape. Thebuffer member 35 is fixed between thefixed part 9 d and the side facepart 3 b by thescrew 31 in a state that thebuffer member 35 is sandwiched between thefixed part 9 d and the side facepart 3 b. - As described above, in this embodiment, the
buffer member 34 is disposed between theupper face part 3 a of the fixingbase 3 and the motor part 7. Therefore, in this embodiment, vibration transmitted from the motor part 7 to theupper face part 3 a can be suppressed by thebuffer member 34. Further, in this embodiment, thebuffer member 35 is disposed between the side facepart 3 b of the fixingbase 3 and thefixed part 9 d of the pump case 9 and thus vibration of the motor part 7 can be suppressed from being transmitted to the side facepart 3 b through thepump part 6 by thebuffer member 35. - Further, in this embodiment, the
buffer member 34 is disposed between theupper face part 3 a and the motor part 7 and thus, even when thefixed part 9 d of the pump case 9 fixed to the side facepart 3 b of the fixingbase 3 is deformed with a lapse of time, the motor part 7 can be prevented from contacting with theupper face part 3 a. Therefore, in this embodiment, even when thefixed part 9 d is deformed with a lapse of time, transmission of vibration from the motor part 7 to the fixingbase 3 can be suppressed. In addition, in this embodiment, thebuffer member 34 is disposed between theupper face part 3 a and the motor part 7 and thus, even when the outer peripheral face of the motor part 7 is formed in a substantially circular truncated cone face shape having a draft angle, the motor part 7 can be supported by thebuffer member 34 in a stable state. - In this embodiment, the
small diameter part 34 b of thebuffer member 34 is engaged with the engaging hole formed in theupper face part 3 a. Therefore, in this embodiment, positional displacement of thebuffer member 34 with respect to theupper face part 3 a can be prevented. - In this embodiment, when viewed in the front and rear direction which is the axial direction of the motor part 7, the gate mark formed
part 14 c where thegate mark 14 b is formed is formed on an opposite side to theconnector arrangement part 14 a so as to interpose the axial center of the motor part 7 therebetween, and a shape of themotor case 14 when viewed in the axial line direction of the motor part 7 is formed to be line symmetric with respect to a line connecting the center of theconnector 28 with the center of thegate mark 14 b which is parallel to the right and left direction. Therefore, in this embodiment, when thestator 12 and the like and themotor case 14 are to be integrally molded, resin is easily flowed uniformly from a gate of the die toward a portion where theconnector 28 is disposed. Further, in this embodiment, the gate mark formedpart 14 c is formed so as to protrude to an outer side in the radial direction of the motor part 7 and a wall thickness of the gate mark formedpart 14 c is set to be thicker than that of the other portion of themotor case 14 except theconnector arrangement part 14 a and the protrudedparts 14 d for screws. Therefore, in this embodiment, when thestator 12 and the like and themotor case 14 are to be integrally molded, resin is easily flowed into an inside of the die from the gate. - In this embodiment, a part of the
gate mark 14 b is overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7. Therefore, when thestator 12 and the like and themotor case 14 are to be integrally molded, injection pressure of resin is hard to be directly applied to the drive coils 22 and the like. As a result, according to this embodiment, when thestator 12 and the like and themotor case 14 are to be integrally molded, damage of the drive coils 22 can be prevented. - In this embodiment, the
motor case 14 is formed of BMC. Therefore, according to this embodiment, heat radiation property and vibration absorption property of themotor case 14 can be enhanced. - Although the present invention has been shown and described with reference to a specific embodiment, various changes and modifications will be apparent to those skilled in the art from the teachings herein.
- In the embodiment described above, the
buffer member 34 is formed in a stepped columnar shape comprised of thelarge diameter part 34 a and thesmall diameter part 34 b. However, the present invention is not limited to this embodiment. For example, thebuffer member 34 may be formed in a columnar shape comprised of only thelarge diameter part 34 a or may be formed in a flat plate shape or in a block shape. In this case, for example, thebuffer member 34 is fixed to an upper face of theupper face part 3 a of the fixingbase 3 by an adhesive or the like. - In the embodiment described above, the
buffer member 35 is disposed between the side facepart 3 b of the fixingbase 3 and thefixed part 9 d of the pump case 9. However, the present invention is not limited to this embodiment. For example, when vibration of the motor part 7 is hard to be transmitted to the side facepart 3 b through thepump part 6, nobuffer member 35 may be disposed between the side facepart 3 b and thefixed part 9 d. - In the embodiment described above, the
motor case 14 is formed of BMC, but themotor case 14 may be formed of resin other than BMC. Further, in the embodiment described above, when viewed in the front and rear direction which is the axial direction of the motor part 7, thegate mark 14 b is formed on the opposite side to theconnector arrangement part 14 a so as to interpose the axial center of the motor part 7 therebetween, but thegate mark 14 b may be formed at another arbitrary position. - In the embodiment described above, a part of the
gate mark 14 b is overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7. However, the present invention is not limited to this embodiment. For example, all of thegate mark 14 b may be overlapped with the outer peripheral core part 23 a in the radial direction of the motor part 7. In this case, when thestator 12 and the like and themotor case 14 are to be integrally molded, damage of the drive coils 22 and the like can be prevented effectively. In accordance with an embodiment of the present invention, it may be structured that thegate mark 14 b and the outer peripheral core part 23 a are not overlapped with each other in the radial direction of the motor part 7. - While the description above refers to particular embodiments of the present invention, it will be understood that many modifications may be made without departing from the spirit thereof. The accompanying claims are intended to cover such modifications as would fall within the true scope and spirit of the present invention.
- The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, rather than the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (16)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012136593A JP6032959B2 (en) | 2012-06-18 | 2012-06-18 | Pump fixing structure and pump |
JP2012-136593 | 2012-06-18 | ||
PCT/JP2013/065641 WO2013191002A1 (en) | 2012-06-18 | 2013-06-06 | Pump-securing structure and pump |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150167694A1 true US20150167694A1 (en) | 2015-06-18 |
Family
ID=49768603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/409,246 Abandoned US20150167694A1 (en) | 2012-06-18 | 2013-06-06 | Pump fixing structure and pump |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150167694A1 (en) |
EP (1) | EP2873868B1 (en) |
JP (1) | JP6032959B2 (en) |
CN (1) | CN104364533B (en) |
WO (1) | WO2013191002A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113001119A (en) * | 2021-03-09 | 2021-06-22 | 何必成 | Method for manufacturing centrifugal pump |
US20210257874A1 (en) * | 2020-02-13 | 2021-08-19 | Shinano Kenshi Co., Ltd. | Electric pump |
US20220324298A1 (en) * | 2019-12-11 | 2022-10-13 | Hanon Systems | Device for driving a compressor, and method for manufacturing the device |
Families Citing this family (4)
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CN105650030A (en) * | 2016-03-17 | 2016-06-08 | 许月进 | Crushing cavity booster pump of hock type fine universal pulverizer |
JP7034608B2 (en) * | 2017-06-19 | 2022-03-14 | 株式会社日立産機システム | pump |
JP7249305B2 (en) * | 2020-03-31 | 2023-03-30 | 日立Astemo株式会社 | electric liquid feed pump |
CN114963531B (en) * | 2021-04-20 | 2024-05-03 | 青岛经济技术开发区海尔热水器有限公司 | Water pump installation device and water heater |
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US20220324298A1 (en) * | 2019-12-11 | 2022-10-13 | Hanon Systems | Device for driving a compressor, and method for manufacturing the device |
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Also Published As
Publication number | Publication date |
---|---|
JP2014001655A (en) | 2014-01-09 |
CN104364533A (en) | 2015-02-18 |
WO2013191002A1 (en) | 2013-12-27 |
JP6032959B2 (en) | 2016-11-30 |
EP2873868A4 (en) | 2016-04-13 |
CN104364533B (en) | 2016-09-28 |
EP2873868A1 (en) | 2015-05-20 |
EP2873868B1 (en) | 2019-01-23 |
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