CN100458175C - Water pump - Google Patents
Water pump Download PDFInfo
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- CN100458175C CN100458175C CNB200510067666XA CN200510067666A CN100458175C CN 100458175 C CN100458175 C CN 100458175C CN B200510067666X A CNB200510067666X A CN B200510067666XA CN 200510067666 A CN200510067666 A CN 200510067666A CN 100458175 C CN100458175 C CN 100458175C
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Abstract
A water pump comprises a pump body, a cylindrical supporting portion, a pulley, a shaft portion, an impeller, a seal member, a pulley cylinder portion, a wall portion, a through-hole formed, a cover covering the wall portion and the pulley cylinder portion of the pulley from one side of the pulley, and the cover formed in a cylindrical shape with a bottom portion and including a reservoir for receiving fluid that has leaked through the seal member.
Description
Affiliated technical field
The present invention relates to a kind of water pump of cooled engine.
Background technique
Known water pump for example is published in the water pump on the TOHKEMY 2003-314491A communique, comprises pulley, shaft portion, pump impeller, the pump housing, bearing, mechanical seal and housing.Particularly, above-mentioned shaft portion and above-mentioned pulley together rotate, above-mentioned pump impeller and above-mentioned shaft portion are together rotated, the above-mentioned pump housing comprises the supporting portion of the approximate circle tubular that above-mentioned axostylus axostyle runs through, above-mentioned Bearing Installation is between the circumferential inner surface of the circumferential outer surface of above-mentioned supporting portion and above-mentioned pulley, supporting above-mentioned pulley and rotatable, an end in the space of above-mentioned mechanical seal between the circumferential inner surface of the circumferential outer surface of above-mentioned shaft portion and above-mentioned supporting portion seals above-mentioned space.
In addition, for the vaporized cooling liquid or the small drop-shaped cooling liquid that will spill through above-mentioned mechanical seal is discharged to atmospheric side, on the antetheca of above-mentioned pulley, form weep hole.Be the cylindric above-mentioned housing that also has the bottom and be fixed on the front surface of above-mentioned pulley, to cover the above-mentioned antetheca of above-mentioned pulley.
According to known like this water pump, vaporized cooling liquid or small drop-shaped cooling liquid see through above-mentioned mechanical seal and spill, the weep hole and being discharged in the above-mentioned housing of flowing through.Cooling liquid is frozen into colloid and sticks on the circumferential inner surface of above-mentioned housing then, spills to prevent cooling liquid.In addition, use above-mentioned housing, can prevent that the impurity object from entering shaft portion.
Yet, in this structure, can not remain in the above-mentioned housing owing to be frozen into the cooling liquid of colloid, the cooling liquid that has been frozen into colloid may flow out above-mentioned housing.In addition, the painted and ethylene glycol that antifreeze liquid comprised that be mixed in the cooling liquid may stick on the above-mentioned front surface of above-mentioned pulley.Therefore, may think that above-mentioned mechanical seal is damaged by mistake.In addition, the outward appearance of water pump also is affected.
Thereby, need a kind of water pump, wherein can prevent to see through the liquid outflow housing that seal element spills.
Summary of the invention
According to an aspect of the present invention, a kind of water pump comprises: the pump housing that comprises pump chamber; Bearing; Be formed on the above-mentioned pump housing so that the cylindric supporting portion that protrudes; Pulley, this pulley are supported by above-mentioned bearing by above-mentioned cylindric supporting portion on the above-mentioned pump housing, so that can rotate by above-mentioned relatively cylindric supporting portion; Shaft portion, this shaft portion comprises the first end section and second end section, and is formed on the above-mentioned pulley, running through the center hole of above-mentioned cylindric supporting portion, and extends to the above-mentioned pump chamber of the above-mentioned pump housing always; Pump impeller, this pump impeller are installed on the above-mentioned second end section of above-mentioned shaft portion, with as a unit; Seal element, sealing element are installed between the circumferential outer surface of above-mentioned cylindric supporting portion near the above-mentioned second end section of the above-mentioned shaft portion of the circumferential inner surface of an end portion of the above-mentioned pump housing one side and above-mentioned pulley; The pulley cylindrical portions may of the pulley that engages with the outer ring of above-mentioned bearing; Wall part, this wall partly make the above-mentioned first end section of above-mentioned shaft portion link to each other with above-mentioned pulley cylindrical portions may; And be formed at that above-mentioned wall is partly gone up so that the through hole that can run through at its axial direction, it is characterized in that housing covers the above-mentioned pulley cylindrical portions may of above-mentioned wall part and above-mentioned pulley from a side of above-mentioned pulley, and above-mentioned housing is cylindrical also to have the bottom, and comprise and hold the cistern that sees through the liquid that above-mentioned seal element spills that described cistern comprises timber on the back side that is formed at the housing bottom, that extend and protrude to axial direction along radial direction from the back side of bottom.
Thereby,, see through liquid that above-mentioned seal element spills and accumulate in the above-mentioned cistern of above-mentioned housing and remain in the above-mentioned housing according to characteristics of the present invention.In this structure, can prevent that liquid from flowing out above-mentioned housing, and can prevent that the composition in the liquid from sticking on the surface of above-mentioned pulley.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the vertical sectional view of the described water pump of first embodiment according to the invention;
Fig. 2 is the plan view of the water pump shown in Fig. 1;
Fig. 3 is the rear view of the water pump shown in Fig. 1;
Fig. 4 is the sectional view of the housing shown in Fig. 1;
Fig. 5 is the plan view of the housing shown in Fig. 4;
Fig. 6 is the rear view of the housing shown in Fig. 4;
Fig. 7 is the sectional view according to second described housing of embodiment of the present invention;
Fig. 8 is the rear view of the housing shown in Fig. 7;
Fig. 9 is the sectional view according to the 3rd the described housing of embodiment of the present invention;
Figure 10 is the rear view of the housing shown in Fig. 9;
Figure 11 is the vertical sectional view according to the 4th the described water pump of embodiment of the present invention;
Figure 12 is the plan view of the water pump shown in Figure 11;
Figure 13 is the viewgraph of cross-section of the housing shown in Figure 11;
Figure 14 is the plan view of the housing shown in Figure 13;
Figure 15 is the rear view of the housing shown in Figure 13.
Embodiment
Below in conjunction with Fig. 1-Fig. 6, illustrate according to the described water pump of the first embodiment of the present invention example of cooled engine how.In Fig. 1, Fig. 2 and Fig. 3, use fixing device, such as bolt, the pump housing 10 of water pump is fixed on the pump group 90 that is installed on the engine body, seal element 80 is installed between the two in this case.
On the part of the pump housing 10, form first supporting portion 11 cylindraceous (cylindric supporting portion) and second supporting portion 12 cylindraceous (cylindric supporting portion) near the center.Particularly, first supporting portion 11 forms forward (among Fig. 1 left) and protrudes, and the diameter of second supporting portion 12 is less than the diameter of first supporting portion 11, so as continuously from the front end of first supporting portion 11 further forward (Fig. 1 left) protrude.
The pump housing of making by the punching press steel plate 10 has the first concentric supporting portion 11 and second supporting portion 12.Then in order to make the pump housing 10 have corrosion resistance, to its plating or coating coating.By bearing 50, pulley 20 is subjected to supporting and rotatable at the circumferential outer surface of second supporting portion 12 of the pump housing 10.Pulley 20 comprises belt lacer part 21, bearing bracket part 22 (pulley cylindrical portions may) and shaft portion 23.
As shown in Figure 1, shaft portion 23 cylindraceous is formed on the core of pulley 20, and its front end has opening, and the rear end has the bottom.In Fig. 1, shaft portion 23 is protruded to the right, runs through the center hole of first supporting portion 11 and second supporting portion 12.
The bottom of shaft portion 23 extends to the pump chamber 95 that hereinafter is about to elaboration always.On circumferential outer surface, form and be bearing bracket part 22 cylindraceous near the opening of shaft portion 23.As shown in Figure 1, by front wall section 24 (wall part), the front end of bearing bracket part 22 links to each other with shaft portion 23 front portions (first end section).
Under the central point of bearing bracket part 22 situation identical with the central point of shaft portion 23, the diameter of bearing bracket part 22 cylindraceous is greater than the diameter of shaft portion 23.The plurality of through holes 24a that the press fit instrument inserts is distributed on the circumference of front wall section 24 equably.In first embodiment, three through hole 24a are formed on the front wall section 24 of pulley 20.On the excircle of bearing bracket part 22, formation is belt lacer part 21 cylindraceous, and its central point is identical with the central point of bearing bracket part 22.The diameter of belt lacer part 21 is greater than the diameter of bearing bracket part 22.
As shown in Figure 1, by forming discoidal rear wall section 25, the rear end of belt lacer part 21 links to each other with the rear end of bearing bracket part 22.Particularly, it is conical that rear wall section 25 is, and its diameter enlarges backward gradually.On rear wall section 25, be distributed in equably on the circumference of rear wall section 25 with the leg part 63a engaging hole engaged part 25a of housing 60.In this embodiment, three conjugate foramen part 25a are formed on the rear wall section 25.
In this case, pulley 20 is made of integratedly belt lacer part 21, rear wall section 25, bearing bracket part 22, front wall section 24 and shaft portion 23.The pulley 20 that the punching press steel plate is made has concentric belt lacer part 21, bearing bracket part 22 and shaft portion 23.Then in order to make pulley 20 have corrosion resistance, to its plating or coating coating.
The hollow projection 30c and the rear end part of shaft portion 23 are chimeric, so that engage with the circumferential outer surface of shaft portion 23.Thereby pump impeller 30 is fixed on the rear end part of shaft portion 23, so that can together rotate.In order to make pump impeller 30 have corrosion resistance, can or apply coating to its plating.
In addition, in this embodiment, three through hole 24a are slotted holes, so that with the inner ring bending of bearing 50.With through hole 24a is that the situation of four circular holes is compared, even when the gross area of the gross area of three openings of three slotted holes and four openings of four circular holes is identical, by three long through-hole 24a, can enlarge the bonding area between press fit instrument and the above-mentioned inner ring.Thereby when using the press fit instrument, power can be put on the inner ring of above-mentioned bearing equably.
As shown in Figure 1, the housing 60 that is formed from a resin is cylindric and has the bottom.Housing 60 is installed in before the pulley 20, so that cover the bearing bracket part 22 and the front wall section 24 of pulley 20.Shown in Fig. 4-Fig. 6 was detailed, housing 60 comprised cylindrical portions may 60a (housing cylindrical portions may), bottom 60b and bottom surface projection section 61a.The excircle that cylindrical portions may 60a is formed at housing 60 is partly gone up and is extended back, and bottom surface projection section 61a is formed on the core of bottom 60b, and protrudes slightly backward.
As shown in Figure 6, U-shaped recess 60j is formed on the cylindrical portions may 60a of housing 60, and the recess of recess 60j is outside.As the linking portion 63 of first linking portion form be formed at pulley 20 on conjugate foramen part 25a engage.In this embodiment, three recess 60j are formed on the cylindrical portions may 60a of above-mentioned housing, and three linking portions 63 are formed at the outside of recess 60j.As shown in Figure 6, linking portion 63 is made up of base portion 60c, leg part 63a and anastomosis part 63b.The radial direction that base portion 60c forms from the recess 60j of cylindrical portions may 60a along housing 60 extends.The leg part 63a of plate shape becomes two rows, and is identical with the bearing of trend of cylindrical portions may 60a, extends from base portion 60c.In addition, anastomosis part 63b is formed on the head portion of leg part 63a in couples, and protrudes to the circumferencial direction of housing 60.Each anastomosis part 63b extends separately in the opposite direction.
With the conjugate foramen part 25a of anastomosis part 63b insertion pulley 20, under the situation of leg part 63a resiliently deformable, both flexibly engage.A plurality of linking portions 63 are formed at the outside of the cylindrical portions may 60a of housing 60.In this embodiment, three linking portions 63 distribute equably at the circumferencial direction of housing 60.In addition, insertion portion 61b is formed on the core of bottom surface projection section 61a of housing 60.Insertion portion 61b engages with the opening of shaft portion 23, and in this case, insertion portion 61b is as second linking portion.
The insertion portion 61b of approximate circle tubular has the recess that forms along axial direction from the top of insertion portion 61b, so that be resiliently deformable at its radial direction.The external diameter of insertion portion 61b is slightly larger than the internal diameter of the open part of shaft portion 23.Thereby, when housing 60 also is not installed on the pulley 20, insertion portion 61b is inserted shaft portion 23, so that both flexibly engage.In order to confirm the existence of elastic element, small through hole 60e be formed at bottom surface projection section 61a go up, on the position that its core tilts relatively on the radial direction, so that run through the bottom surface projection section 61a of housing 60.
As shown in Figure 6, timber 60d (cistern) forms radially from the excircle of bottom surface projection section 61a and partly extends to recess 60j.Particularly, each timber 60d extends to each vertical component of recess 60j continuously.More particularly, timber 60d is formed on the back side of bottom 60b, protrudes along the radial direction extension and to axial direction from the back side of bottom 60b; In addition, timber 60d is formed on the circumferential inner surface of cylindrical portions may 60a of housing 60 continuously, extends from the circumferential inner surface of above-mentioned housing along its axial direction and protrudes to radial direction.When housing 60 has been installed on the pulley 20, interspace hardly in order to make between pulley 20 and the housing 60, cylindrical portions may 60a is an appropriate value at the length setting of axial direction.As mentioned above, the base portion 60c of linking portion 63 is formed at the outside of cylindrical portions may 60a, and is formed between the timber 60d at the recess 60j on the cylindrical portions may 60a.In this structure, paired leg part 63a has saved a part of circumferential outer surface, simplifies the shaping die of housing 60 by a kind of like this mode, to prolong the working life of above-mentioned shaping die.Thereby the size of pulley 20 is more little, just need on the cylindrical portions may 60a that linking portion 63 is installed outside it recess 60j be set more.
In addition, because timber 60d is formed on the back side of bottom 60b and on the back side of cylindrical portions may 60a,, especially can strengthen the intensity of the cylindrical portions may 60a of formation recess 60j it on so can strengthen the intensity of whole housing 60.Thereby can reduce the thickness of housing 60.Therefore, can alleviate the weight of housing 60 and reducing production costs.In addition, when the weight saving of housing 60, the inertia of pulley 20 diminishes.Therefore, can reduce owing to rotate the degree of wear of the anastomosis part 63b that is caused between pulley 20 and the housing 60 relatively.In addition, be mixed in vaporized cooling liquid or the small drop-shaped cooling liquid and from the antifreeze liquid that pump chamber 95 spills the ethylene glycol of gelatin, accumulate on the wall surface 60h, spill pulley 20 with the ethylene glycol that prevents gelatin.
As mentioned above, because pulley 20 is by a direction rotation, so each timber 60d only partly extends to the wall of each recess 60j.Particularly, each timber 60d can be formed at one of them through hole 24a and be formed on the sense of rotation of pulley 20 between one of them recess 60j after the above-mentioned through hole 24a.Yet, two timber 60d from bottom surface projection section 61a under the situation that two walls of recess 60j part is extended radially, when housing 60 has been installed on the pulley 20, above-mentioned two timber 60d are positioned at the two ends of through hole 24, can suitably hold the vaporized cooling liquid or the small drop-shaped cooling liquid that have spilt from pump chamber 95.
On each base portion 60c, with the surperficial facing surfaces that forms leg part 63a on form and reinforce timber 60f.Each reinforces the opposite direction extension of timber 60f towards each leg part 63a.Thereby, when housing 60 has been installed on the pulley 20, on reinforcing timber 60f, uses and be pressed into instrument, housing 60 is pressed into pulley 20.Distribute equably at the circumferencial direction of housing 60 because reinforce timber 60f, the pressure that is pressed into that uses the instrument that is pressed into to apply puts on each leg part 63a equably.
The anastomosis part 63b of leg part 63a is inserted conjugate foramen part 25a, so that both flexibly engage, in this structure, fixing housing 60 on a plurality of parts on pulley 20 circumference.In addition, the insertion portion 61b of housing 60 is inserted the open part of shaft portion 23, so that both flexibly engage.Thereby the core of the core of housing 60 and pulley 20 is chimeric.In addition, use insertion portion 61b to cover the open part of shaft portion 23, in this structure, can prevent that the impurity object from entering shaft portion 23.Even thereby coating is not suitably electroplated or applied in the bottom in the shaft portion 23, can prevent that also the bottom in the shaft portion 23 from getting rusty.
Between the bottom surface of housing 60 projection section 61a and front wall section 24, the ring-shaped rubber sheet 70 (elastic element) as elastic element has been installed to the pulley 20 of the bottom surface projection section 61a application of force.As shown in Figure 1, sheet rubber 70 and is squeezed at its axial direction between the front wall section 24 of the rear surface of bottom surface projection section 61a and pulley 20.In this case, sheet rubber 70 has hidden small through hole 60e in the rear surface of bottom surface projection section 61a.Even after housing 60 has been installed on the pulley 20, also can see through through hole 60e, see sheet rubber 70 from the front surface of bottom surface projection section 61a.Thereby can prevent from easily to forget sheet rubber 70 is installed on the projection section 61a of bottom surface.
Next, will illustrate how to start described water pump according to first embodiment.In order to make pulley 20 rotations, use the belt that engages with the belt lacer part 21 of pulley 20, rotating force is sent to pulley 20 from the output shaft of motor (indicating in the drawings), and, also rotate by the direction identical with the sense of rotation of pulley 20 with the shaft portion 23 that pulley 20 is connected as a single entity along with the rotation of pulley 20.Then, the pump impeller 30 that combines with shaft portion 23 one of pulley 20 rotates in pump chamber 95, and pump chamber 95 is separated in the pump housing 19.
Owing to be full of cooling liquid in the pump chamber 95, by the centrifugal force of pump impeller 30 rotations, cooling liquid flows to the excircle of pump impeller 30.By such running, in pump chamber 95, different with pressure near pump impeller 30 excircles near the pressure of pump impeller 30 cores.Just because of this pressure difference, cooling liquid is inhaled into pump chamber 95 by the liquid sucting port 95a on the spin axis that is formed at pump impeller 30.The cooling liquid that is inhaled into flows to the excircle of pump impeller 30, then by being formed at the liquid outlet (not indicating in the drawings) on the excircle part, with each part that need cool off of cooling liquid injection engine.Cooling liquid circulates by this way.
In such structure, by on the sliding parts between adapter ring 40b and the rotating ring 40a, keeping liquid film, mechanical seal 40 sealing pump chambers 95.After the running of engine long time, vaporized cooling liquid or small drop-shaped cooling liquid see through mechanical seal 40 and spill, and vaporized cooling liquid that spills or small drop-shaped cooling liquid are discharged by the gap between second supporting portion 12 of the shaft portion 23 and the pump housing 10, and vaporized cooling liquid that finally spills or small drop-shaped cooling liquid are discharged in the housing 60 that together rotates with pulley 20 by through hole 24a.Being discharged into vaporized cooling liquid that spills in the housing 60 or small drop-shaped cooling liquid is frozen into colloid and sticks on the circumferential inner surface of cylindrical portions may 60a by the centrifugal force of housing 60.The cooling liquid that is frozen into colloid then accumulates on the wall surface 60h of timber 60d.Be stored in the housing 60 after finally being frozen into the cooling liquid drying of colloid.Can prevent that like this cooling liquid from flowing out housing 60, and antifreeze liquid comprised and the ethylene glycol that be colored that is mixed in the cooling liquid can not be attached on the front surface of pulley 20.Therefore, the outward appearance of water pump improves, and also can be better as merchandise sales.
In addition, housing 60 is installed on the front wall section 24 of pulley 20, and extruded sheet rubber 70 is installed between the front wall section 24 of housing 60 and pulley 20.Thereby the anastomosis part 63b of the housing that is formed from a resin 60 engages with conjugate foramen part 25a, even and when the rotation fluctuation of pulley 20 causes anastomosis part 63b wearing and tearing, can not send thump thump sound between anastomosis part 63b and the conjugate foramen part 25a yet, knock the noise of pulley 20 to avoid housing 60.In addition, use sheet rubber 70, can absorb the vibration on the pulley 20 that the punching press steel plate forms.Therefore, can reduce effectively by the vibration on the caused housing 60 of vibration of pulley 20 rotation fluctuations.
Below in conjunction with Fig. 7 and Fig. 8, the housing that is used for according to second described water pump of embodiment is described.Second embodiment's structure is similar substantially to first embodiment.Below emphasis is set forth difference with first embodiment.Particularly, in second embodiment, the shape of housing 60 is totally different among the shape of housing 60 and first embodiment, and the second cylindrical portions may 60g has replaced the timber 60d among first embodiment.Particularly, in second embodiment, three second cylindrical portions may 60g are formed in three linking portions 63 space between each.More particularly, shown in rear view among Fig. 8, the diameter of cylindrical portions may 60a increases in three linking portions 63 space between each, to form three second cylindrical portions may 60g.In addition, as shown in Figure 8, wall surface 60h is formed between the two ends and cylindrical portions may 60a of each second cylindrical portions may 60g, so that extend along the radial direction of housing 60.Wall surface 60h is as timber 60d, particularly, vaporized cooling liquid or small drop-shaped cooling liquid see through mechanical seal 40 and spill and be attached on the circumferential inner surface of the second cylindrical portions may 60g from pump chamber 95, accumulate on the wall surface 60h, spill pulley 20 with the ethylene glycol that prevents gelatin.
Below in conjunction with Fig. 9 and Figure 10, the housing that is used for according to the 3rd the described water pump of embodiment is described.In first embodiment, parallel leg part 63a is formed on the linking portion 63 of housing 60, and anastomosis part 63b is formed on the head portion of each leg part 63a in couples, protrudes with the circumferencial direction to housing 60.Each anastomosis part 63b extends separately in the opposite direction.In the 3rd embodiment, the anastomosis part 64b of gum is fixed on each top of leg part 64a.Anastomosis part 64b is included on the radial direction of housing 60 to projecting inward ratchet part.The anastomosis part 64b of resiliently deformable is inserted the conjugate foramen part 25a of pulley 20, and the above-mentioned ratchet part of anastomosis part 64b engages with the conjugate foramen part 25a of its outside pulley 20 then.Thereby by the anastomosis part 64b that is made by rubber, the rear surface of the bottom surface projection section 61a of housing 60 can flexibly be combined on the front surface (first surface) of front wall section 24 of pulley 20.Therefore, can avoid housing 60 to knock the noise of pulley 20.In addition, use the anastomosis part 64b that makes by rubber, can absorb the vibration on the pulley 20 that the punching press steel plate forms.Therefore, can reduce effectively by the vibration on the caused housing 60 of vibration of pulley 20 rotation fluctuations.
Below in conjunction with Figure 11-Figure 15, the housing that is used for according to the 4th the described water pump of embodiment is described.The 4th embodiment's structure is similar substantially to first embodiment.Below emphasis is set forth difference with first embodiment.Housing 60 among the 4th embodiment is made by rubber.Under this structure, the shape of housing 60 is different with first embodiment.In the 4th embodiment, shown in Figure 13-Figure 15 was detailed, cylindrical portions may 60a in the mode same with first embodiment, was formed on the excircle part of housing 60.Cylindrical portions may 60a extends back, so that chimeric with bearing bracket part 22.In addition, at the core of the bottom of housing 60 60b, three projection section 61a distribute equably at circumferencial direction.Each projection section 61a protrudes backward as shown in figure 13 and extends along radial direction as shown in figure 14, so that engage with the front wall section 24 of pulley 20.
A plurality of linking portions 63 are formed at the outside of the cylindrical portions may 60a of housing 60.In this embodiment, three linking portions are as first linking portion, to engage with the conjugate foramen part 25a of pulley 20.Particularly, each linking portion 63 is made of plate leg part 63a and anastomosis part 63b.Leg part 63a extends along radial direction from the rear end of cylindrical portions may 60a, and anastomosis part 63b is formed at as shown in figure 15 on the outside of linking portion 63a and as shown in figure 13 and protrudes backward.Anastomosis part 63b comprises recessed portion, so that form the bottom in its back-end, and as Figure 11 and shown in Figure 13, forms opening at its front end.Thereby anastomosis part 63b can flexibly be out of shape at its radial direction.Leg part 63a can flexibly be out of shape along the rear wall section 25 of pulley 20.In this case, as shown in figure 11, anastomosis part 63b flexibly engages with conjugate foramen part 25a.
In addition, at the core of projection section 61a, form insertion portion 61b.Insertion portion 61b as second linking portion extends back, and engages with the opening with shaft portion 23.Insertion portion 61b forms and is cylindric and as Figure 11 and the opening that is included in its front end shown in Figure 13.Insertion portion 61b can flexibly be out of shape at its radial direction, flexibly engages with the opening with shaft portion 23.
Thereby,, housing 60 is fixed on the pulley 20 by a plurality of circumference of housing 60 and linking portions on the core of being formed at.Insert conjugate foramen part 25a so that in the structure of both resilient engagement at anastomosis part 63b, fixing housing 60 on a plurality of parts on pulley 20 circumference.In addition, the insertion portion 61b of housing 60 is inserted the open part of shaft portion 23, so that both flexibly engage.Thereby the core of the core of housing 60 and pulley 20 is chimeric.In this structure of the open part that uses insertion portion 61b covering shaft portion 23, can prevent that the impurity object from entering shaft portion 23.Thereby,, can prevent that also the bottom in the shaft portion 23 from getting rusty even coating is not suitably electroplated or applied in the bottom in the shaft portion 23 in order to have corrosion resistance.
In the 4th embodiment, three the 3rd cylindrical portions may 60k are formed in three linking portions 63 space between each.More particularly, shown in rear view among Figure 14, the diameter of cylindrical portions may 60a increases in three linking portions 63 space between each, to form three the 3rd cylindrical portions may 60k.In addition, as shown in figure 14, wall part 60m is formed between the two ends and cylindrical portions may 60a of each the 3rd cylindrical portions may 60k, so that extend along the radial direction of housing 60.Wall surface 60h is as timber 60d, particularly, vaporized cooling liquid or small drop-shaped cooling liquid see through mechanical seal 40 and spill from pump chamber 95, and be attached on the circumferential inner surface of the 3rd cylindrical portions may 60k, on wall part 60m, assemble, spill pulley 20 with the ethylene glycol that prevents gelatin.
In addition, under projection section 61a and situation that the front wall section 24 of pulley 20 engages, because housing 60 is made by rubber and has been installed on the pulley 20, and cylindrical portions may 60a and bearing bracket part 22 are chimeric, so can reduce the vibration of above-mentioned bearing vibration or pulley 20 rotation fluctuations effectively.
Thereby,, see through the wall surface (cistern) that liquid that above-mentioned seal element spills accumulates in above-mentioned housing and go up and remain in the above-mentioned housing according to characteristics of the present invention.In this structure, can prevent that liquid from flowing to outside the above-mentioned housing, and can prevent that the composition in the liquid from sticking on the surface of above-mentioned pulley.
In addition, according to characteristics of the present invention, the liquid that sees through on the above-mentioned seal element circumferential inner surface that spill and that stick to above-mentioned housing is gelatin, accumulates on the above-mentioned wall surface and remains in the above-mentioned housing.
In addition, according to characteristics of the present invention, even for convenient for production and recess is formed on the above-mentioned cylindrical portions may of above-mentioned housing, the liquid that sees through on the above-mentioned seal element circumferential inner surface that spill and that stick to above-mentioned housing is gelatin, accumulates on the above-mentioned wall surface and remains in the above-mentioned housing.
In addition,, use above-mentioned elastic element, above-mentioned housing is connected on the above-mentioned pulley, can prevent to send impact sound by the above-mentioned housing that above-mentioned pulley rotation fluctuation causes according to characteristics of the present invention.
In addition, according to characteristics of the present invention, extruded above-mentioned elastic element is installed between the above-mentioned bottom surface projection section of the front surface of above-mentioned front wall section (the first wall part) of above-mentioned pulley and above-mentioned housing.Therefore, even thump thump sound is not sent in the wearing and tearing of the anastomosis part of above-mentioned housing yet.In addition, do not send the noise that above-mentioned housing knocks above-mentioned pulley yet, otherwise, can make a noise because the rotation fluctuation causes above-mentioned pulley vibration.
In addition, because above-mentioned elastic element hides above-mentioned small through hole on the rear surface of above-mentioned bottom surface projection section, even, see above-mentioned elastic element from the front surface of above-mentioned bottom surface projection section so after being installed in above-mentioned housing on the above-mentioned pulley, also can see through above-mentioned through hole.Thereby can prevent from easily to forget above-mentioned elastic element is installed on the projection section of above-mentioned bottom surface.
Claims (6)
1. water pump comprises:
The pump housing (10) that comprises pump chamber (95);
Bearing (50);
Be formed at the above-mentioned pump housing (10) upward so that the cylindric supporting portion (11) (12) that protrudes;
Pulley (20), this pulley (20) is supported by above-mentioned bearing (50) by above-mentioned cylindric supporting portion (11) (12), so that can rotate by above-mentioned relatively cylindric supporting portion (11) (12);
Shaft portion (23), this shaft portion (23) comprises the first end section and second end section, and be formed on the above-mentioned pulley (20), with center hole that runs through above-mentioned cylindric supporting portion (11) (12) and the above-mentioned pump chamber (95) that extends to the above-mentioned pump housing (10) always;
Pump impeller (30), this pump impeller (30) are installed on the above-mentioned second end section of above-mentioned shaft portion (23), together to rotate with above-mentioned shaft portion (23);
Seal element (40), sealing element (40) are installed between the circumferential outer surface of above-mentioned cylindric supporting portion (11) (12) near the above-mentioned second end section of the circumferential inner surface of the above-mentioned pump housing one side and above-mentioned shaft portion (23);
Be located at the pulley cylindrical portions may that above-mentioned pulley (20) is gone up and engaged with the outer ring of above-mentioned bearing (50);
Being located at above-mentioned pulley (20) goes up so that the wall part that the above-mentioned first end section of above-mentioned shaft portion (23) is connected with above-mentioned pulley cylindrical portions may;
And be formed at that above-mentioned wall is partly gone up so that the through hole (24a) that runs through at its axial direction is characterized in that:
Housing (60) covers the above-mentioned pulley cylindrical portions may of above-mentioned wall part and above-mentioned pulley (20) from a side of above-mentioned pulley (20), and above-mentioned housing (60) cylindrical and have the bottom, and comprise that the cistern that collect to see through the liquid that above-mentioned seal element (40) spills, described cistern comprise timber on the back side that is formed at housing (60) bottom (60b), that the back side of (60b) is extended and protruded to axial direction along radial direction from the bottom.
2. water pump according to claim 1 is characterized in that:
Above-mentioned cistern is the wall surface (60h) that is formed on the circumferential inner surface of housing cylindrical portions may (60a) of above-mentioned housing (60), extends and protrudes to radial direction from the above-mentioned circumferential inner surface of above-mentioned housing (60) along its axial direction.
3. water pump according to claim 2 is characterized in that:
Recess (60j) is formed on the above-mentioned circumferential inner surface of above-mentioned housing cylindrical portions may (60a), and above-mentioned wall surface (60h) is positioned at above-mentioned through hole (24a) and is being formed on the sense of rotation of above-mentioned pulley (20) between the above-mentioned recess of afterwards one of them of above-mentioned through hole (24a) (60j).
4. according to claim 1,2 or 3 described water pumps, it is characterized in that:
Use elastic element that above-mentioned housing (60) is attached on the above-mentioned pulley (20).
5. water pump according to claim 4 is characterized in that:
Above-mentioned elastic element is squeezed and is installed between the bottom surface projection section (61b) of the first surface of above-mentioned wall part (24) of above-mentioned pulley (20) and above-mentioned housing (60).
6. water pump according to claim 5 is characterized in that:
Be used to confirm that the hole (60e) that above-mentioned elastic element exists is formed at above-mentioned bottom surface projection section (61b).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004130536 | 2004-04-27 | ||
| JP2004130537A JP4547976B2 (en) | 2004-04-27 | 2004-04-27 | Water pump |
| JP2004130537 | 2004-04-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1690444A CN1690444A (en) | 2005-11-02 |
| CN100458175C true CN100458175C (en) | 2009-02-04 |
Family
ID=35346113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510067666XA Expired - Fee Related CN100458175C (en) | 2004-04-27 | 2005-04-25 | Water pump |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4547976B2 (en) |
| CN (1) | CN100458175C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5853616B2 (en) * | 2010-11-29 | 2016-02-09 | 日本精工株式会社 | Actuator and manufacturing method thereof |
| EP2476928A1 (en) * | 2011-01-18 | 2012-07-18 | Pierburg Pump Technology Italy S.p.A. | Automotive fluidic pump |
| CN102788025B (en) * | 2011-05-16 | 2015-02-18 | 中国计量学院 | Anti-leaking sealing method for full-sealing B type liquid pump |
| KR101999326B1 (en) * | 2013-08-21 | 2019-07-12 | 한온시스템 주식회사 | Air blower for fuel cell vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6200889B1 (en) * | 1995-11-03 | 2001-03-13 | Micron Technology, Inc. | Semiconductor bonding pad |
| CN1346023A (en) * | 2000-09-19 | 2002-04-24 | 爱信精机株式会社 | Water pump |
| US6561770B2 (en) * | 2000-05-30 | 2003-05-13 | Honda Giken Kogyo Kabushiki Kaisha | Engine water pump with temperature responsive drive |
| US20030175133A1 (en) * | 2002-02-21 | 2003-09-18 | Aisin Seiki Kabushiki Kaisha | Water pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1219755B (en) * | 1987-05-14 | 1990-05-24 | Skf Gmbh | DRIVE DEVICE FOR PUMPS OR SIMILAR |
| JP3675321B2 (en) * | 2000-09-19 | 2005-07-27 | アイシン精機株式会社 | Water pump |
| JP2003139216A (en) * | 2001-10-31 | 2003-05-14 | Ogura Clutch Co Ltd | Power transmitting mechanism |
| JP2003216160A (en) * | 2002-01-23 | 2003-07-30 | Mazda Motor Corp | Noise reduction device of engine |
| JP4089462B2 (en) * | 2002-02-21 | 2008-05-28 | アイシン精機株式会社 | water pump |
-
2004
- 2004-04-27 JP JP2004130537A patent/JP4547976B2/en not_active Expired - Fee Related
-
2005
- 2005-04-25 CN CNB200510067666XA patent/CN100458175C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6200889B1 (en) * | 1995-11-03 | 2001-03-13 | Micron Technology, Inc. | Semiconductor bonding pad |
| US6561770B2 (en) * | 2000-05-30 | 2003-05-13 | Honda Giken Kogyo Kabushiki Kaisha | Engine water pump with temperature responsive drive |
| CN1346023A (en) * | 2000-09-19 | 2002-04-24 | 爱信精机株式会社 | Water pump |
| US20030175133A1 (en) * | 2002-02-21 | 2003-09-18 | Aisin Seiki Kabushiki Kaisha | Water pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005315079A (en) | 2005-11-10 |
| JP4547976B2 (en) | 2010-09-22 |
| CN1690444A (en) | 2005-11-02 |
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Granted publication date: 20090204 Termination date: 20100425 |