CN101153552A - Filter, oil strainer and method for manufacturing oil strainer - Google Patents

Abstract

One end of an outlet side tubular member has an inner diameter larger than the outer diameter of one end of an inlet side tubular member. The inner periphery of the one end of the outlet side tubular member includes a fusion bonding part, a shoulder closer to the one end of the outlet side tubular member than the fusion bonding part and another shoulder closer to the other end of the outlet side tubular member than the fusion bonding part. The outer periphery of the one end of the inlet side tubular member includes a fusion bonding part, a shoulder closer to the one end of the inlet side tubular member than the fusion bonding part and another shoulder closer to the other end of the inlet side tubular member than the fusion bonding part. In fusion bonding both the fusion bonding parts, a bonding flash accommodation part is defined on one side of the fusion bonding parts by an associated pair of shoulders and another bonding flash accommodation part is defined on the other side of the fusion bonding parts by another associated pair of shoulders.

Description

The manufacture method of filter, sump strainer and sump strainer

Technical field

The manufacture method of filter, sump strainer and the sump strainer that the present invention relates in a kind of internal combustion office that for example is arranged on automobile etc. and circuit machine oil inside the Pass this internal-combustion engine is filtered.

Background technique

Up to the present, put down in writing in the 2002-210310 communique as opening for example Japanese publication communique spy, known have so a kind of sump strainer, and promptly this sump strainer filter of forming the sump strainer main body of tubular by integral body and being arranged on this sump strainer body interior constitutes.Upwardly extending resin system first tubular body in heart line side and second tubular body combine and promptly constitute the sump strainer main body therein.The built-up section of described first tubular body and second tubular body is welded together.Be formed with the machine oil ostium on described first tubular body, be formed with the machine oil tap hole on described second tubular body.After the machine oil that sucks from the machine oil ostium of first tubular body is filtered by filter, flow out to the outside from the machine oil tap hole of second tubular body.

As mentioned above, as if being welded together then, two resin parts can produce the welding burr.For example open and put down in writing the measure that when such welding burr takes place, will take in the 2002-248685 communique Japanese publication communique spy, promptly with under the housing of tubular and the lid of the open part that covers this housing situation welded together, be used for taking in the welding burr containing section that welds burr also being provided with one near the place of housing inboard than the welding portion of this housing and lid.So, under the situation that the welding burr separates from welding portion owing to vibration, impact etc., just can take in the welding burr by welding burr containing section, the welding burr just can not drop in the housing.

But, open under the technology of being put down in writing in the 2002-248685 communique Japanese publication communique spy, only be provided with this welding burr containing section near a side of the centerline direction of the place of housing inboard that is housing than welding portion.Therefore, under Japanese publication communique spy being opened first tubular body of the formation sump strainer in the 2002-210310 communique and situation that second tubular body welds, only be formed with welding burr containing section in place than first tubular body and more close centerline direction one side of second tubular body.So, can consider like this: the opposite side since first tubular body and second tubular body towards centerline direction extends the welding burr that forms, can not be incorporated in welding burr containing section, and can separate from welding portion, the storage space that drops to machine oil goes.If sump strainer should weld burr and machine oil sucks together, the mesh of filter just stops up easily.

The invention of the first aspect of this application researchs and develops out for addressing this problem, its purpose is: first tubular body and second tubular body is welded together and constitute under the situation of sump strainer main body, weld burr even begin to extend formation towards the centerline direction both sides of tubular body from welding portion, also do not allow these welding burrs come off, thereby the mesh that prevents filter stop up from the sump strainer main body.

Up to the present, known have resemble Japanese Utility Model publication communique real open put down in writing in the clear 60-31319 communique, this filter forms by what bottom and circumferential wall part constituted a round-ended cylinder shape.Bottom and circumferential wall part at this filter are provided with filtration mesh part, also are provided with many simultaneously in order to strengthen the rib of this mesh part.These mesh parts and rib part are formed as one by resin material, have realized the minimizing of components number.

But, put down in writing in the clear 60-31319 communique as real the opening of Japanese Utility Model publication communique, when mesh part and rib part were formed as one by resin material, the part of the fluid that mesh is partly had by the hole can break down and become substandard products.In order to prevent that these substandard products from dispatching from the factory, to carry out finished product inspection after the shaping.But, check that by people's visual examination precision will be very low, and spended time because fluid is very little by the hole.Just because of this, such requirement is arranged in recent years, promptly finished product is checked, seek laborsavingization, also want simultaneously to shorten the review time while improve the inspection precision by the image processing inspection of having used computer apparatus.

Yet, be cylindric because Japanese Utility Model publication communique is driven the filter of being put down in writing in the clear 60-31319 communique in fact, so circumferential wall part is a curved surface.Therefore, when utilizing image processing that the mesh of this circumferential wall part is partly checked, can occur near the part of shooting camera with away from the part of camera of making a video recording, and can be at whole image pickup scope inner focusing.That is to say because with vidicon camera photograph the scope that can check of picture just become vidicon camera focusing than close limit, so have to check circumferential wall part bit by bit, check that the time that all parts spent of circumferential wall part is just elongated.

As mentioned above, because circumferential wall part is a curved surface, so if with vidicon camera from a direction to the shooting of this circumferential wall part, the fluid of mesh part that is in the position that faces vidicon camera by hole and the fluid that is positioned at the position of entering from the position that faces vidicon camera by the hole with regard to the difformity that is made for being shot.So, the shape of fluid by the hole will be along with the difference at the position of circumferential wall part and difference can not get correct check result in the image of being produced.

The invention of the second aspect of this application researchs and develops out for addressing the above problem, its purpose is: when utilizing image processing that the mesh of the circumferential wall part that is formed on bottom tube-like resin filter made device is partly checked, accomplish once just can correctly check very wide scope, thereby receive high-precision check result at short notice, make the filter cost degradation.

In addition, up to the present, put down in writing in the 2002-210310 communique as opening for example Japanese publication communique spy, known have so a kind of sump strainer that is arranged in the food tray, and promptly this sump strainer is made of with the machine oil filter for filtration that is arranged on this enclosure interior the housing that integral body forms the tubular that straight line shape extends.The end of the end of resin system first tubular body and second tubular body welded promptly constitute housing.End in the opposite side with welding portion of first tubular body is formed with the machine oil ostium, is formed with the machine oil outflow opening in the end of the opposite side with welding portion of second tubular body.After machine oil in the food tray that sucks from the machine oil inflow entrance of first tubular body is filtered by filter, flow out to the outside, be used for the lubricated of various piece from the machine oil tap hole of second tubular body.

But, occur in order to prevent to suck machine oil in the housing sucking bad, just want the machine oil inflow entrance of sump strainer is arranged in the place that can fully guarantee fuel head in the food tray.But, because food tray is complex-shaped, be extruded with obstacles such as cylinder block in the food tray, so open in the tubular sump strainer of being put down in writing in the 2002-210310 communique that extends to straight line shape like that for example Japanese publication communique spy, be difficult to avoid obstacle the machine oil inflow entrance is arranged on desirable position.For address this problem can consider be crooked the housing that forms sump strainer.Form under the situation of sump strainer so crooked, have to make the tubular body bending that constitutes housing.Do like this, when being shaped, will form undercut.The result is that the structure that forms the forming die of tubular body will be complicated, even can cause the sump strainer cost to increase.

The invention of the third aspect of this application researchs and develops out for addressing this problem, its purpose is: in the sump strainer that comprises the housing that is constituted by a plurality of tubular bodies, make simplifying the structure of the forming die that forms tubular body as far as possible, reduce the cost of sump strainer on one side, in housing, form curved section on one side, and the machine oil inflow entrance can be arranged in desirable position.

Summary of the invention

In the invention of the application's first aspect, as sump strainer, be a kind of centerline direction one end and the inside of the sump strainer main body that is welded of centerline direction one end of second tubular body sump strainer of being provided with filter at first tubular body.The internal diameter of described first tubular body, one end is set greatlyyer than the external diameter of described second tubular body, one end; Described first tubular body, one end be provided with first welding portion interior week, a side and the opposite side at the centerline direction of comparing more close described first tubular body with this first welding portion is respectively arranged with the first space component part simultaneously; The periphery of described second tubular body, one end is provided with second welding portion that is welded on described first welding portion, and a side and the opposite side at the centerline direction of comparing more close described second tubular body with this second welding portion is respectively arranged with the second space component part that constitutes welding burr containing section with the first space component part jointly simultaneously.

According to the invention of first aspect, can access that second welding portion with first welding portion of first tubular body and second tubular body welds and the fuel filter main body that forms.Forming welding burr containing section by the first space component part and the second space component part, also can form welding burr containing section at opposite side equally than first welding portion of this fuel filter main body and a side of the more close centerline direction of second welding portion.Because can form welding burr containing section so respectively in the centerline direction both sides of first welding portion and second welding portion, so can be respectively the welding burr that extends towards the centerline direction both sides from first welding portion and second welding portion that is produced be accommodated in welding burr containing section respectively.So, can not come off because can not weld burr from the fuel filter main body, just can not be inhaled in the sump strainer together so weld burr, thereby the mesh that can prevent filter stops up with oil.

In the invention of first aspect, can be such, first welding portion and second welding portion lay respectively at diametrically than on the more outstanding position of the main wall portion of first tubular body and second tubular body.

So, because first welding portion and second welding portion are more outstanding also outward than first tubular body and second tubular body diametrically, so when carrying out weld job, can be easy to and support first welding portion and second welding portion from the outside of first tubular body and second tubular body very reliably with instrument, thereby the power that instrument brought can be conveyed to fully first welding portion and second welding portion.So, just can be pressed securely onto first welding portion and second welding portion, thereby can reliably the two be welded.

In the invention of this first aspect, can be such, a tubular body in the filter and first tubular body and second tubular body is integrally formed.

In view of the above, because a tubular body in the filter and first tubular body and second tubular body is integrally formed, thus the components number that constitutes sump strainer is reduced, thus assembling procedure is reduced.

In the invention of first aspect, can be such, each monomer naturally of sump strainer main body and filter, described filter are provided with the retained part that is clamped by first tubular body and second tubular body.

In view of the above, make sump strainer main body and filter each naturally under the situation of a monomer, only first tubular body and second tubular body is integrated by welding, just can enough two tubular bodies the retained part of filter be clamped, thereby this filter is fixed on the fuel filter main body.

Under the situation of the related sump strainer of the invention of making first aspect, comprise following operation: the first tubular body forming process, on the interior week of described first tubular body, one end first welding portion is set, a side and the opposite side at the centerline direction of comparing close described first tubular body with this first welding portion is provided with the first space component part respectively simultaneously; The second tubular body forming process, on the interior week of described second tubular body, one end second welding portion is set, a side and the opposite side at the centerline direction of comparing more close described second tubular body with this second welding portion is provided with the second space component part respectively simultaneously; And welding process, after described first tubular body forming process and the described second tubular body forming process, one end of described second tubular body is inserted an end of described first tubular body, described first welding portion and described second welding portion are welded, form welding burr containing section by described first space component part and the described second space component part simultaneously.

In view of the above, in welding process, can also form welding burr containing section respectively at first welding portion and second welding portion than fuel filter main body near a side and the opposite side of centerline direction.So, the welding burr that extends towards the centerline direction both sides from first welding portion and second welding portion that is produced can be accommodated in welding burr containing section respectively, thereby the mesh that can prevent filter stops up.

Can be such in described welding process, utilize spin welding or ultrasonic welding that first welding portion and second welding portion are welded.

In view of the above, because can utilize very low spin welding of cost of equipment or ultrasonic welding that first tubular body and second tubular body are welded, so can seek the cost degradation of sump strainer.

In the invention of the application's second aspect, be to comprise bottom and the tubular filter of circumferential wall part, structure is, described circumferential wall part comprises mesh part that convection cell filters and in order to strengthen the rib of this mesh part, it is polygon up to the section shape of the other end direction vertical with center line that described circumferential wall part forms from an end of the centerline direction of this circumferential wall part; Described mesh part, described rib and described bottom are integrally formed with resin material.

According to the invention of second aspect, be the polygon of crossing over the centerline direction two ends because the section shape of circumferential wall part is a polygon, so be formed with the tabular surface that quantity equates with the number on this polygonal limit on the circumferential wall part.So, when utilizing image processing that finished product is checked, the enough vidicon cameras of energy focus on whole tabular surface and make a video recording, thereby can once this whole tabular surface be checked according to this image, but also can similarly check other tabular surface.Because shooting to as if tabular surface, pass through the hole so can cross over the fluid that the integral body of this tabular surface similarly produces mesh part.Therefore, be that situation cylindraceous is compared with the circumferential wall part of conventional example, when utilizing image processing that this filter is checked, once wider scope can be correctly checked, thereby high-precision check result can be obtained at short notice.The result can seek the cost degradation of filter.

In the invention of second aspect, can be such, the fluid that the mesh part is had is set greatlyyer than the opening area in downstream side by the hole at the opening area of the mobile upstream side of fluid.

In view of the above, because the fluid of mesh part is big at the opening area in the open area ratio downstream side of upstream side by the hole,, thereby the circulating resistance of fluid is reduced so the easy incoming fluid of fluid passes through the hole.

Can also be such, fluid forms by the internal face in hole: will be directed to the flow direction of the fluid in the described circumferential wall part by this fluid by the fluid in hole.

In view of the above, when for example fluid passes through hole towards the inboard by mesh fluid partly from the outside of circumferential wall part, can by the internal face in hole this fluid be directed to the fluid flow direction of the inside of flowing through circumferential wall part by fluid.The result is to make flowing of fluid very smooth.

Be a kind of sump strainer, comprise: the filter that the invention of second aspect is related, and take in described filter and have ostium that the fluid before filtering flows into and filter by this filter after the housing of the tap hole that flows out of fluid.On described housing, be formed with the cylindrical part that the circumferential wall part with described filter impales.

In view of the above because the filter with polygon section shape is surrounded by the cylindrical portions may of housing, so can the tabular surface of the circumferential wall part that is formed on filter and and this tabular surface cylindrical portions may inner peripheral surface in opposite directions between guarantee sufficient space.So, can allow the fluid that flows into from the ostium of housing from the fluid of the circumferential wall part of above-mentioned space inflow filter by the hole, thereby can make flowing of fluid very smooth.

Can also be such, comprise the housing tap hole of the sump strainer of the filter that the invention of described second aspect is related, be connected on the lubricant oil inlet hole that is arranged on the mobile engine.

In view of the above, can make sump strainer high quality, the low price that is installed on the mobile engine.

The invention of the third aspect is a kind of sump strainer, comprise: housing is used for filter oil filtration device with being incorporated in this housing, described housing is an end and has the machine oil inflow entrance, has the tubular of machine oil outflow opening in another end, and is used in first tubular body that the parting plane at centerline direction middle part cuts apart and second tubular body and is bonded with each other and forms.Favour the center line of described first tubular body and in this housing, be formed with curved part by the parting plane that makes described housing.

Invention according to the third aspect, because make the parting plane of housing favour the center line of first tubular body, so first tubular body and second tubular body are formed under the situation that extends to straight line shape, also join second tubular body to this first tubular body under the state that can tilt at the center line of second tubular body and first tubular body, housing becomes the shape in the bending of the anastomosis part of two tubular bodies.Therefore, can the limit make the simple structure of the forming die of be shaped first tubular body, second tubular body, reduce the cost of sump strainer, the limit makes buckling of shells that the machine oil inflow entrance is arranged in desirable position.Remark additionally, the angle of inclination and the direction of the parting plane of the center line of relative first tubular body by changing housing just can at random change the bend angle and the direction of buckling of shells part.

In the invention of the third aspect, can be such, one termination of a tubular body in first tubular body and second tubular body is combined in the other end, is formed with on the other end of this tubular body to install to use flange portion, and the intermediate portion of this tubular body forms curved section.

In view of the above, the intermediate portion by a tubular body in first tubular body and second tubular body forms for example curved section, just can access to have this curved section and at the housing of two curved sections of curved section of anastomosis part.That is to say, can make another tubular body become straight line shape in the limit, make the simple structureization of forming die, the limit forms a plurality of curved sections at housing, and the degrees of freedom of the shape set of housing is improved, and at an easy rate oily inflow entrance is arranged in desirable position.

Can be such in the invention of the third aspect, the intermediate portion of another tubular body in first tubular body and second tubular body forms curved section.

In view of the above, can the limit housing be divided into first tubular body and two tubular bodies of second tubular body, the limit forms three curved sections at this housing.So, because the degrees of freedom of the shape set of housing is further improved, so on one side can more easily avoid other interior obstacle of food tray, Yi Bian arrange sump strainer.

The simple declaration of accompanying drawing

Fig. 1 is the stereogram of the related sump strainer of first embodiment of the present invention.

Fig. 2 is the sectional drawing of the II-II line of Fig. 1.

Fig. 3 be show outflow side tubular body and inflow side tubular body welded together before state and be equivalent to the figure of Fig. 2.

Fig. 4 be show outflow side tubular body and inflow side tubular body after welded together state and be equivalent to the figure of Fig. 3.

Fig. 5 is the related figure that is equivalent to Fig. 2 of first embodiment's variation.

Fig. 6 is the stereogram of the related sump strainer of second embodiment of the invention.

Fig. 7 is the sectional drawing of the VII-VII line among Fig. 6.

Fig. 8 is the amplification profile of filter containing section one side of sump strainer.

Fig. 9 is the figure of the filter seen from open part one side.

Figure 10 is the sectional arrangement drawing of the forming process of explanation filter.

Figure 11 is the sectional drawing of the XI-XI line among Figure 10.

Figure 12 is the enlarged view of flat surface portion.

Figure 13 is the sectional drawing of the XIII-XIII line among Figure 12.

Figure 14 is the 3rd figure that is equivalent to Figure 11 that embodiment is related.

Figure 15 A is the related figure that is equivalent to Fig. 8 of second, third embodiment's variation 1.

Figure 15 B is the related figure that is equivalent to Fig. 8 of second, third embodiment's variation 2.

Figure 15 C is the related figure that is equivalent to Fig. 8 of second, third embodiment's variation 3.

Figure 16 is the stereogram of the 4th sump strainer that embodiment is related of the present invention.

Figure 17 is the sectional drawing of the XVII-XVII line among Figure 16.

Figure 18 is the amplification profile that demonstration remains on outflow side tubular body and inflow side tubular body on the XVII-XVII line that is equivalent to Figure 16 of the state on the welding machine.

Figure 19 is the figure that is equivalent to Figure 18 of the state after the welding of demonstration outflow side tubular body and inflow side tubular body finishes.

Figure 20 is the related amplification profile of the 4th embodiment's variation 1.

Figure 21 is the related figure that is equivalent to Fig. 1 of the 4th embodiment's variation 2.

Figure 22 is the sectional drawing of the related sump strainer of the 4th embodiment's variation 2.

Embodiment

Below, with reference to the accompanying drawings embodiments of the invention are described.Remark additionally, below example only on the illustrative in nature of each most preferred embodiment, the present invention does not limit various suitable things or purposes etc. are special.

(first embodiment)

Fig. 1 is the figure of the related sump strainer 1 of demonstration first embodiment of the invention.This sump strainer 1 comprises sump strainer main body 12 and filter 3 (being shown in Fig. 2).Though do not show, sump strainer 1 for example is arranged in the food tray in store oil space of the internal combustion office that constitutes automobile and is installed on the cylinder block.Described sump strainer main body 12 is roughly the drum that extends along above-below direction, is separated in the neutral position of above-below direction, is made of outflow side tubular body 10 that constitutes upside and the inflow side tubular body 11 that constitutes downside being installed under the state of cylinder block.These outflow side tubular bodies 10 are resin systems with inflow side tubular body 11.The size up and down of outflow side tubular body 10 is set longlyer than the size up and down of inflow side tubular body 11, and the parting plane of sump strainer main body 12 is positioned at the position of the close downside of sump strainer main body 12.Under the state of the inside that described filter 3 is set to outflow side tubular body 10, an end of the centerline direction of this outflow side tubular body 10 is that an end of the centerline direction of lower end and inflow side tubular body 11 promptly is soldered the upper end.Described outflow side tubular body 10 is first tubular body, and described inflow side tubular body 11 is second tubular body.

Be formed with the curved section 13 that bends to approximate right angle on the top of described outflow side tubular body 10.The upper end open of outflow side tubular body 10 partly is connected the suction port (not shown) of the oil pump of motor, constitutes the machine oil outflow opening 10a that allows sump strainer main body 12 interior machine oil flow out.Be formed with the flange portion 14 that machine oil outflow opening 10a is fenced up in the upper end portion of this outflow side tubular body 10.Be formed with the reach through hole 14a of the secure component (not shown) break-through that is used to be fastened to cylinder block on this flange portion 14, the groove 14b that embeds as the O type ring (not shown) of sealed member forms the appearance that described machine oil outflow opening 10a is fenced up simultaneously.The part of curved section below 13 at described outflow side tubular body 10 is approximately the extension of straight line shape ground.The following part of above-below direction approximate center part of outflow side tubular body 10 be set to the filter containing section 15 of taking in described filter 3, and this part is bigger than the external diameter on the top of outflow side tubular body 10 corresponding to the external diameter of filter 3.

The 10b of main wall portion of outflow side tubular body 10 is made of with the part of this filter containing section more than 15 described filter containing section 15.Diameter divides 16 to communicate with the lower end of the described main wall 10b of portion than the also big large-diameter portion of the 10b of this main wall portion, as shown in Figure 2, at the inner peripheral surface of outflow side tubular body 10, divides 16 formation position to be formed with step portion 10c corresponding to described large-diameter portion.At the outer circumferential face of the 10b of main wall portion, divide 16 shape to be formed with along first 10d that radially extends and second 10e that extends along centerline direction corresponding to large-diameter portion.Described large-diameter portion divide 16 be positioned at filter containing section 15 concentric position on.

As shown in Figure 3, described large-diameter portion divide 16 interior Monday of side to be formed with upside step portion 16a and begin from this upside step portion 16a away from below downside step portion 16b.Part between this step portion 16a, the 16b is set to welding portion 16c (only being shown in Fig. 3).Upside step portion 16a and downside step portion 16b are the first space component parts, and welding portion 16c is first welding portion.

On the other hand, as shown in Figure 2, the urceolus part 30 that described inflow side tubular body 11 comprises the 11b of main wall portion, is surrounded with the upper end that forms the 11b of this main wall portion.The 11b of main wall portion is the drum that near linear shape ground extends.The external diameter of the 11b of main wall portion is littler than the filter containing section 15 of described outflow side tubular body 10, past more downside, the mild wedge shape that diameter is more little.The lower ending opening of the 11b of main wall portion partly constitutes in order to allow machine oil in the food tray flow into the machine oil inflow entrance 11a (being shown in Fig. 3) of sump strainer.As shown in Figure 2, be formed with annulus 11c outstanding, that extend in a circumferential direction beyond radially at the outer circumferential face of the upper end portion of the 11b of main wall portion.Described urceolus part 30 forms as one with the projected direction fore-end of this annulus 11c.Between urceolus part 30 and the 11b of main wall portion, be formed with the gap.In this gap, leave the compartment of terrain and be furnished with a plurality of ribs 32 on the circumferencial direction of urceolus part 30, this rib 32 couples together urceolus part 30 and the 11b of main wall portion.

The external diameter of described urceolus part 30 be set than large-diameter portion divide 16 little.The center line Y of urceolus part 30 is roughly consistent with the center line of the 11b of main wall portion.As shown in Figure 3, on the outer circumferential face of urceolus part 30, be formed with upside step portion 30a and begin downside step portion 30b away from the below from this upside step portion 30a.Part between this step portion 30a, the 30b is set to welding portion 30c (only being shown in Fig. 3).Upside step portion 30a and downside step portion 30b are the second space component parts, and welding portion 30c is second welding portion.In welding process described later, the upside step portion 30a of described urceolus part 30 is oriented to the state in opposite directions with described upside step portion 16a.And, the downside step portion 30b of urceolus part 30 be oriented to equally into downside step portion 16b state in opposite directions.

The upper end part of urceolus part 30 be formed with towards above the outstanding filter standing part 30d that extends to ring-type.The section shape of this filter standing part 30d is more up sharp more shape, and the upper end part is positioned at than up top also, the upper end part of the 11b of main wall portion.The end portion of urceolus part 30 is formed with the outstanding and the brim of a hat part 30e that extend in a circumferential direction in radial outward.

Described filter 3, doing as a whole being along what the center line of filter containing section 15 extended has a bottom tube-like, be arranged in it in the filter containing section 15 and its bottom one side up.Bottom and circumferential wall part at filter 3 are formed with the mesh part 3a that is configured for filter oil, are formed with the flange portion 3b that extends outwardly diametrically in opening one side of an opposite side with the bottom of filter 3.The external diameter of this flange portion 3b is set greatlyyer than the internal diameter of filter containing section 15, and divides 16 internal diameter smaller than large-diameter portion.This flange portion 3b embeds the step portion 10c of outflow side tubular body 10 and is clamped on thickness direction by this step portion 10c and described filter standing part 30c.So, filter 3 just is fixed on the sump strainer main body 12.This flange portion 3b is a retained part.Described mesh part 3a is provided with a plurality of rib 3c, and these ribs 3c, mesh part 3a and flange portion 3b are integrally formed by resin material.

Next, the manufacture method by the sump strainer 1 of above-mentioned formation is described.At first, utilize injection molding method to form described outflow side tubular body 10 and inflow side tubular body 11.This is the first tubular body forming process of the present invention and the second tubular body forming process.In addition, filter 3 also utilizes injection molding method to be shaped in advance.

Afterwards, go to utilize ultrasonic bonding that outflow side tubular body 10 and inflow side tubular body 11 are welded together and incorporate welding process.As shown in Figure 3, this moment, used ultrasonic welding machine A comprised that supporting fixture A1, the supporting of the described outflow side of supporting tubular body 10 flow into the vibratory tool A2 of side pipe shape body 11, utilize add the shake device A3 of ultrasound by vibratory tool A2 vibration.Supporting fixture A1 is arranged in downside, is furnished with vibratory tool A2 and adds the device A3 that shakes at the upside of supporting fixture A1.

At first, the large-diameter portion from described outflow side tubular body 10 divides 16 with described filter 3 insertions.The flange portion 3b one of this filter 3 arrives the step portion 10c of outflow side tubular body 10, and filter 3 is just located by step portion 10c.Large-diameter portion divide 16 1 sides towards below state under allow vibratory tool A2 supporting flow into side pipe shape body 11.That is to say, in welding process, the position of outflow side tubular body 10 and inflow side tubular body 11 relation, it is up and down anti-comparing with the user mode of finished product, and promptly outflow side tubular body 10 is positioned at downside in welding process, and inflow side tubular body 11 is positioned at upside.And, allow this moment large-diameter portion divide 16 center line consistent with the center line of urceolus part 30.

Supporting under the state of described outflow side tubular body 10 by supporting fixture A1, because large-diameter portion divides 16 to give prominence to diametrically outwardly, so supporting fixture A1 contacts with divide 16 first 10d and second 10e that form corresponding to described large-diameter portion.At this moment, can make a not side of first the 10 more close outflow of the 10b of contact gear ratio main wall portion of supporting fixture A1.Equally, because the urceolus part 30 of inflow side tubular body 11 is also more outstanding outward than the 11b of main wall portion diametrically, so the brim of a hat part 30e one side contacts of vibratory tool A2 and urceolus part 30.

Allow vibratory tool A2 move towards the below, the large-diameter portion that the urceolus part 30 of inflow side tubular body 11 is just inserted outflow side tubular body 10 divides 16, and soon, the welding portion 16c of outflow side tubular body 10 just contacts with the welding portion 30c of inflow side tubular body 11.At this moment, the upside step portion 30a of the upside step portion 16a of outflow side tubular body 10 and inflow side tubular body 11 in opposite directions, simultaneously, the downside step portion 30b of the downside step portion 16b of outflow side tubular body 10 and inflow side tubular body 11 is in opposite directions.

Afterwards, the below is pressed to vibratory tool A2 in the limit, and lateral dominance produces ultrasonic vibration with adding the device A3 that shakes, and utilizes frictional heat to allow the welding portion 16c of outflow side tubular body 10 and the welding portion 30c of inflow side tubular body 11 melt.Inflow side tubular body 11 moves towards the below along with welding portion 16c, 30c fusing.Like this, as shown in Figure 4, just formed the space by described two upside step portion 16a, 30a, this space becomes the outflow side welding burr containing section S1 that is positioned at outflow one side, formed the space by described two downside step portion 16b, 30b, this space becomes the inflow side welding burr containing section S2 that is positioned at inflow one side.That is to say that the outflow side of the above-below direction both sides of welding portion 16c, 30c and inflow side are formed with outflow side welding burr containing section S1 and inflow side welding burr containing section S2 respectively.When the displacement distance of shifting to described inflow side tubular body 11 becomes predetermined distance, filter standing part 30d just touches the flange portion 3b of filter 3, become the state of flange portion 3b by outflow side tubular body 10 and 11 clampings of inflow side tubular body, allow add the device A3 that shakes stop the vibration, allow vibratory tool A2 stop to move simultaneously towards the below.

In described welding process, produce welding burr that extends towards the outflow side from welding portion 16c, the 30c of outflow side tubular body 10 and inflow side tubular body 11 and the welding burr that extends towards the inflow side.The welding burr that extends towards the outflow side is incorporated in outflow side welding burr containing section S1, and the welding burr that extends towards the inflow side is incorporated among the inflow side welding burr containing section S2.

As mentioned above, the sump strainer 1 related according to this embodiment can form outflow side welding burr containing section S1 and inflow side welding burr containing section S2 respectively near a side of outflow side and a side of close inflow side than welding portion 16c, 30c.So, just can with from welding portion 16c, 30c towards the outflow side and the welding burr that extends of inflow side be accommodated in respectively outflow side and inflow side welding burr containing section S1, the S2.So, because the welding burr has not come off from sump strainer main body 12, just can not be inhaled into together in the sump strainer 1, thereby the mesh that can prevent filter 3 stops up with oil so weld burr.

Because described welding portion 16c is also more outstanding towards radial outside than the 10b of main wall portion of outflow side tubular body 10, so in welding process, can utilize supporting fixture A1 to support easily and reliably near the welding portion 16c by first 10d of first tubular body, 10 outsides and second 10e, and, because described welding portion 30c is also more outstanding towards radial outside than the 11b of main wall portion of inflow side tubular body 11, so in welding process, can utilize vibratory tool A2 to support easily and reliably near the welding portion 30c by the brim of a hat part 30e of second tubular body, 11 outsides.So, the pushing force of supporting fixture A1 and vibratory tool A2 just can pass to welding portion 16c, 30c fully.In addition because supporting fixture A1 and large-diameter portion divide 16 outer circumferential face promptly second 10e contact, so can prevent that welding portion 16c from slipping out towards outside displacement.And, by the 11b of main wall portion and the urceolus part 30 of inflow side tubular body 11 being coupled together to improve the rigidity of welding portion 30c, just can prevent that welding portion 30c from slipping out towards inboard displacement with rib 3c.As mentioned above, the welding portion 16c of outflow side tubular body 10 is pressed on the welding portion 30c of inflow side tubular body 11 securely, just can welds welding portion 16c, 30c reliably.

Only outflow side tubular body 10 and inflow side tubular body 11 are welded together, just can enough two tubular bodies 10,11 clamp the flange portion 3b of filter 3 and this filter 3 is fixed on the sump strainer main body 12.

Remark additionally, in this embodiment, make the annulus 11c of inflow side tubular body 11 be positioned at also close outflow one side, but be not limited to this, annulus 11c can be arranged on the position the same on the centerline direction with welding portion 30c than welding portion 30c.So, welding portion 30c just can make rigidity improve by annulus 11c from the inboard supporting.The result is in welding process, can prevent that welding portion 30c from slipping out towards inboard displacement.

In this embodiment, sump strainer main body 12 and filter 3 monomer of respectively doing for oneself, but be not limited to this, for example variation as shown in Figure 5 is such, can allow the 11b of main wall portion of filter 3 and inflow side tubular body 11 integrally formed.So, the components number that constitutes sump strainer 1 is reduced, thereby reduce the assembling procedure number.And, though do not show, can also make filter 3 and outflow side tubular body 10 integrally formed.

In this embodiment, utilize ultrasound that outflow side tubular body 10 and inflow side tubular body 11 are welded together, but be not limited to this, can also utilize the Spin welding connection to weld.In this case, earlier outflow side tubular body 10 is fixed, the same with the situation of utilizing ultrasonic bonding to weld again, be pressed to inflow side tubular body 11 on the outflow side tubular body 10 and make its rotation.The welding burr that produced this moment also can be incorporated among welding burr containing section S1, the S2.

Described sump strainer 1 not only can use as the oily filtration fraction of internal combustion office, can also use as the oily filtration fraction of the automatic transmission of automobile, other dynamic power machine etc.

(second embodiment)

Fig. 6 shows the related sump strainer of second embodiment of the invention 1.As shown in Figure 7 and Figure 8, this sump strainer 1 comprises housing 2 and filter 3.Though do not show, this sump strainer 1 for example is disposed in the oil measure that constitutes automobile internal office and deposits in the food tray in space and be installed on the cylinder block.Housing 2 is cylindric, with so that the mouth of the ostium 2a of the machine oil inflow housing 2 that will filter in filter 3 is opened towards long side direction one end (right side among Fig. 6), use so that the mouth of the tap hole 2b that the oil that will filter in filter 3 has flowed out in housing 2 is opened towards the long side direction the other end (left side Fig. 6).Tap hole 2b is connected on the inlet hole 4 (only representing with double dot dash line in Fig. 7 and Fig. 8) of the food tray of the cylinder block that is formed on motor.

Described housing 2 carries out injection moulding with resin material and makes.As shown in Figure 6, be formed with housing one side flange part 10 in the peripheral part of the tap hole 2b of housing 2.On this housing one side flange part 10, be formed with two and insert through hole 10a, be inserted through this insertion through hole 10a in order to the secure component (not shown) that this flange portion 10 is fastened on the cylinder block.As shown in Figure 8, be formed with first step portion 11 at the inner peripheral surface of the tap hole 2b of housing 2 by a side of lining, these first step portion, 11 forward sides are formed with second step portion 12.The sealed member 13 that is made of O type ring embeds in second step portion 12.By sealing parts 13 with good seal between inlet hole 4 peripheral parts of housing one side flange part 10 and cylinder block.

As shown in Figure 6 and Figure 7, the long side direction intermediate portion at described housing 2 is formed with curved section 14.Be used as filter containing section 15 usefulness cylindraceous from the flange portion 10 of described housing 2 to this part the curved section 14, in order to take in filter 3.

Described filter 3 is that resin material is carried out injection moulding and the integrally formed product made, is the bottom tube-like that has that comprises bottom 30 and circumferential wall part 31.End in the opposite side with the bottom of filter 3 is formed with open part 32.As Fig. 9 and shown in Figure 10, when overlooking, bottom 30 is hexagonal tabular.

The external diameter of the circumferential wall part 31 of described filter 3 is set forr a short time than the internal diameter of described filter containing section 15.Consider the drafting angle problem, 30 peripheral part is at a slight tilt in the outside of filter 3 towards open part 32 and extends circumferential wall part 31 a little from the bottom, therefore, to cross over the section shape of these centerline direction two ends direction vertical with center line be the hexagon that is similar to bottom 30 for circumferential wall part 31.So, become the hexagonal configuration similar to bottom 30 by the section shape that makes circumferential wall part 31, just on circumferential wall part 31, formed six flat surface portions 36,36 ..., as shown in Figure 9.

Around the open part 32 of filter 3, be formed with filter side flange part 37.As Fig. 7, shown in Figure 8, make the outer shape of this filter side flange part 37 become the circle that it is embedded first step portion 11 of described housing 2.Filter side flange part 37 is being fitted under the state of first step portion 11, and described sealed member 13 just contacts with the outer circumferential face of filter side flange part 37.

As Figure 10, shown in Figure 11, be formed with the reinforcement perisporium rib 38 that adds up to 6 in interface portion along the adjacent flat surface portion 36,36 of the circumferencial direction of described housing 2.These perisporium ribs 38 are the radial centerline direction two ends of giving prominence to and arriving this circumferential wall part 31 continuously towards circumferential wall part 31 outsides.Preferably, constitute the exterior edge face of perisporium rib 38 by curved surface.

As shown in figure 12, the zone between the perisporium rib 38,38 of each flat surface portion 36 of described housing 2 is formed with the perisporium mesh part 40 in order to oil is filtered.The fineness degree of the mesh of this perisporium mesh part 40 is set at 19 meshes, that is to say, length forms 19 fluids by hole 40a for one inch.From plan view, the fluid that constitutes described perisporium mesh part 40 tilts 45 ° by the first linear parts 40b of hole 40a and the center line Y (only being shown in Figure 12) of mutual near normal of the second linear parts 40c and relative circumferential wall part 31.Therefore, from plan view, fluid is approximate rectangular by hole 40a.Remark additionally, can set the mesh number of perisporium mesh part 40 arbitrarily.

As shown in figure 13, the section shape of the first linear parts 40b and the second linear parts 40c forms the closer to the outside of filter 3 narrow more.This is to have considered behind the withdrawing pattern of forming die described later and set and.Because this thin more shape of the outside the closer to filter 3 of the first linear parts 40b and the second linear parts 40c, so the stream sectional area of each fluid by hole 40a is exactly big more the closer to the outside of filter 3.That is to say that fluid is set than big at the opening area of filter 3 inboards by the opening area of hole 40a in filter 3 outsides.As shown in Figure 8, interior Monday of filter side flange part 37 side also be formed with mesh part 41, the fluid of this mesh part 41 is configured to increase towards the outside from the inboard of filter 3 by the stream sectional area in hole equally.

Be formed with towards opposite with open part 32 1 sides one side-prominent enhancing diapire rib 34 in the peripheral part of described bottom 30.As shown in figure 11, diapire rib 34 forms along the bottom ring-type that extend continuously 30 peripheral part.Be formed with the diapire mesh part 35 of filtering near area inside at diapire rib 34 in order to oil than bottom 30.It is the same with described perisporium mesh part 40 that the fineness degree of the mesh of diapire mesh part 35 is set to.The same with described perisporium mesh part 40, constitute first linear parts 35b of diapire mesh part 35 and the section shape of the second linear parts 35c and also form the closer to filter 3 outsides thin more.

Next, the manufacturing main points by the filter 3 of above-mentioned formation are described.At first, the forming die 100 that allows filter 3 be shaped is described.As shown in figure 11, this forming die 100 comprises: six middle moulds 103,103 (demonstration is also arranged among Figure 11) that counterdie 102 that 30 outsides, bottom that make patrix 101 that the inner peripheral surface of filter 3 is shaped, make filter 3 are shaped and circumferential wall part 31 outsides that make filter 3 are shaped.Patrix 101 moves along the centerline direction of filter 3, and counterdie 102 forms as one with the injector of not showing and is fixed on this injector.Described patrix 101, counterdie 102 and middle mould 103,103 ... promptly form cavity under the state of matched moulds.

As shown in figure 10, be formed with on the described counterdie 102 in order to resin material is expelled to the door 102a in the cavity.This 102a is provided with six corresponding to the formation position of the perisporium rib 38 in the cavity.Described middle mould 103,103 ... be arranged to the appearance of arranging along the circumferencial direction of filter 3, a middle mould 103 forms a flat surface portion 36, shown in the white arrow among Figure 11, in each mould 103 with the direction of flat surface portion 36 quadratures on move.As shown in figure 10, be provided with a plurality of groove 103a in each on the forming face of mould 103, these grooves 103a is in order to the first linear parts 40b and the second linear parts 40c of shaping perisporium mesh part 40, and the center line of these grooves 103a and filter 3 extends at a slant.

If will be by forming die 100 matched moulds of above-mentioned formation, to cavity injecting molten resin material, then resin material just can flow to the place corresponding to filter side flange part 37 from the place corresponding to the bottom 30 of cavity from door 102a.At this moment, in cavity corresponding to the place of perisporium mesh part 40 because the groove 103a of the forming face of middle mould 103 extends on the direction that the center line with filter 3 tilts, so resin material successfully flows to the place corresponding to filter one side flange part 37 in the cavity by this groove 103a.So, resin material just is easy to be full of the place corresponding to perisporium mesh part 40 in the cavity.So after the resin material in the described cavity solidified, die sinking was to filter 3 form removals again.

Afterwards, the filter 3 of form removal is delivered to the finished product inspection operation.Though do not show, this finished product inspection is that utilization employed image processor in the inspection operation of various goods carries out.This image processor comprises vidicon camera, checks to resolving with the image of this vidicon camera production, judging whether object is made according to designing requirement, and this is that everybody knows altogether, has just no longer elaborated with computer apparatus.

In the finished product inspection operation, at first, a flat surface portion 36 is photographed, checked with vidicon camera.At this moment, because check that object is very smooth, so can access the image that focuses on whole flat surface portion 36 integral body.Based on this, once can check this whole flat surface portion 36.The inspection one of this flat surface portion 36 finishes, and just uses the same method and checks another flat surface portion 36 and diapire mesh part 35.If judging from check result is substandard products, just it is taken away from Assembly line.

In the time of will constituting sump strainer 1 by the above-mentioned filter that obtains 3 insertion housings 2, then because the circumferential wall part 31 of filter 3 is hexagonal tubulars, and filter containing section 15 is cylindric, so can the flat surface portion 36 of circumferential wall part 31 and and this flat surface portion 36 filter containing section 15 inner peripheral surfaces in opposite directions between guarantee sufficient space S, as shown in Figure 8.If allow oil pump work after being installed to described sump strainer 1 on the cylinder block of motor, just oil can be drawn into housing 2 inside from the tap hole 2a of housing 2.The oil that is drawn onto the inside of housing 2 is filtered by its inboard from the outside of the diapire mesh part 35 of filter 3 and flows to open part 32 1 sides along center line.On the other hand, the inboard by it is filtered and flows to open part 32 1 sides to the oil in the filter containing section 15 from the outside of perisporium mesh part 40.That is to say, shown in the arrow X among Fig. 8 and Figure 13, become flowing on 32 centerline direction from bottom 30 towards open part in the main flow of the oil of described circumferential wall part 31 internal flows.

Machine oil in the described filter containing section 15 flows into the fluid of perisporium mesh part 40 by when the 40a of hole, because the flat surface portion 36 that is formed on circumferential wall part 31 and and this flat surface portion 36 filter containing section 15 inner peripheral surfaces in opposite directions between guarantee to have sufficient space S, so machine oil successfully flows.And machine oil also is filtered when the fluid by flange portion 37 is by hole 40a.

As mentioned above, the filter 3 related according to this embodiment is because make the shape of circumferential wall part 31 become the hexagonal tubular, so can form six flat surface portions 36,36 on circumferential wall part 31 ...So, when utilizing image processing to check finished product, focus at whole flat surface portion 36, once check whole flat surface portion 36 according to this image again with vidicon camera.And, also can similarly check other flat surface portion 36.By to 36 shootings of a flat surface portion, promptly can similarly cross over the fluid of 36 pairs of perisporium meshes of this whole flat surface portion part 40 and make a video recording, so can access correct check result by hole 40a.Therefore, when utilizing image processing that this filter 3 is checked, with existing circumferential wall part 31 is that situation cylindraceous is compared, once just can correctly check very wide scope, thereby can obtain high-precision check result at short notice, also just can seek the cost degradation of filter 3.

The fluid that passes through diapire mesh part 35, perisporium mesh part 40 at machine oil is by when hole 35a, the 40a, because the fluid that with direction of engine oil flow upstream one side is filter 3 outsides is set than the opening area big antenna 105 of the promptly inboard fluid in downstream side by hole 35a, 40a by the opening area of hole 35a, 40a, so the easy incoming fluid of machine oil passes through in hole 35a, the 40a, thereby the circulating resistance of machine oil is reduced.

Because utilize described filter 3 to constitute the sump strainer 1 that is installed to mobile engine, so can make this sump strainer 1 high quality, low cost.

In described sump strainer 1, surrounded by cylinder-shaped filter containing section 15 because have the filter 3 of hexagon in section shape, thus can the flat surface portion 36 of the circumferential wall part 31 that is formed on filter 3 and and this flat surface portion 36 filter containing section 15 inner peripheral surfaces in opposite directions between guarantee sufficient space S.So, when the fluid of the circumferential wall part 31 that makes the machine oil inflow filter 3 that flows into from the ostium 2a of housing 2 passes through hole 40a, can make flowing of fluid very smooth.

(the 3rd embodiment)

Figure 14 is that one side is seen the figure that the related filter of third embodiment of the invention 3 is seen from the bottom.Filter among this second embodiment, because except the section shape of the shape of bottom and circumferential wall part (not shown) and first embodiment different, other place is all the same, so following part same symbolic representation identical with first embodiment, omit explanation, different places is described in detail.

Though do not show, it is quadrangle that the bottom of second embodiment's filter 3 becomes when overlooking.Inner peripheral portion 31 corresponding to the shape of described bottom be have four flat surface portions 36,36 ... the quadrangular barrel shape.Take in the same of the housing 2 of filter 3 and described first embodiment.

The same with first embodiment, the forming die of filter 3 comprises upper die and lower die (not shown) and middle mould 103.The number of middle mould 103 is the same with the number of flat surface portion 36, is 4.

The same with first embodiment, in this second embodiment's filter 3, when utilizing image processing to carry out finished product inspection, once can correctly check out very wide scope, thereby can obtain high-precision check result at short notice, thereby can seek cost degradation.

Remark additionally, variation 1 shown in Figure 15 A is the same, it is such constituting the first linear parts 40a of perisporium mesh part 40 of filter 3 and the structure of the first linear parts 40b, promptly from the outside of filter 3 to inboard width about equally, constitutes the end that is positioned at the outside with curved surface.Shown in the variation 2,3 shown in Figure 15 B, Figure 15 C, the internal face of fluid by hole 40a can form the machine oil main flow flow direction (X represents with arrow) that will be directed to by the machine oil of this fluid by hole 40a in the inner peripheral portion 31.In variation 2, the radial skew of the relative inner peripheral portion 31 in side of the first linear parts 40b is in order that be directed to directions X with machine oil.In variation 3, two sides of the first linear parts 40b tilt equally.In these variation 2,3, the outside from inner peripheral portion 31 can be directed to the machine oil main flow flow direction X of inner peripheral portion 31 inside by fluid by the machine oil of hole 40a towards the inboard, thereby the circulating resistance of machine oil is further reduced.

Described sump strainer 1, on the motor that can be used in automobile, can also be used in the lubrication system of motor-driven speed changer, other various dynamic power machines of automobile.Described sump strainer 1 can also filtered water, air etc. except can filtering machine oil.

The inner peripheral portion 31 of filter 3 is not limited to described hexagonal tubular, quadrangular barrel shape, so long as with section shape on the direction of center line quadrature be that polygons such as triangle, pentagon, heptagon, octagon get final product.If the section shape of this inner peripheral portion 31 becomes more than the heptagon, then the number of the middle mould 103a of mould 100 will increase, it is complicated that mold structure will become, simultaneously number of times of imaging increases and complexity is got up in the finished product inspection operation, so between preferably being set in the section shape of inner peripheral portion 31 from the triangle to the hexagon.

(the 4th embodiment)

Figure 16 is the figure of the related sump strainer 1 of demonstration four embodiment of the invention.This sump strainer 1 comprises: machine oil filter for filtration 2 (being shown in Figure 17) and have machine oil inflow entrance 11a and machine oil outflow opening 10a at two end part and take in the housing 3 of described filter 2.Though for example do not show, sump strainer 1 is disposed in the food tray of the machine oil storage space that constitutes automobile internal office and is installed on the cylinder block.

Described housing 3, be the drum that center line roughly extends along the vertical direction under the state that housing 3 is installed on the cylinder block, as shown in figure 17, cut apart at the parting plane W that is set in the above-below direction intermediate portion, constituted by outflow side tubular body 10 that constitutes its upside and the inflow side tubular body 11 that constitutes its downside.These outflow side tubular bodies 10 and inflow side tubular body 11 are resin system.The size up and down of outflow side tubular body 10 is set longlyer than the size up and down of inflow side tubular body 11, and therefore, the parting plane W of housing 3 is positioned on the position near the downside of this housing 3.The center line X1 of the parting plane W of housing 3 and outflow side tubular body 10 downsides tilts.

Described filter 2 is being arranged under the state of tubular body 10 inside, described outflow side, centerline direction one end of this outflow side tubular body 10 is that centerline direction one end of underpart and inflow side tubular body 11 is that the upper end portion welds together.Described outflow side tubular body 10 is first tubular bodies of the present invention, and inflow side tubular body 11 is second tubular bodies of the present invention.

Upside at described outflow side tubular body 10 is formed with curved section 13.The upper end open of outflow side tubular body 10 partly constitutes described machine oil outflow opening 10a, is connected the oil pump suction port (not shown) of motor.As shown in figure 16, the upper end portion of this outflow side tubular body 10 is formed with the installation flange portion 14 in order to machine oil outflow opening 10a is surrounded.Be formed with the fastening patchhole 14a that inserts with the secure component (not shown) that is used to be fastened to cylinder block on this flange portion 14, the while, the groove 14b as the O type ring (not shown) embedding of sealed member formed the appearance that described machine oil outflow opening 10a is surrounded.Curved section 13 downside near linear shape down than described outflow side tubular body 10 extends.Than the above-below direction approximate center of outflow side tubular body 10 part also down downside decision for taking in the filter containing section 15 of described filter 3, this filter containing section 15 is corresponding with the external diameter of filter 3, and diameter is bigger than the upper diameter of outflow side tubular body 10.The center line of this filter containing section 15 is consistent with the center line X1 of outflow side tubular body 10 downsides.

Be communicated with the diameter large-diameter portion also bigger in the lower end side of described filter containing section 15 and divide 16 than this filter containing section 15.As shown in figure 17, this large-diameter portion divides 16 center line along extending with the approximately perpendicular direction of parting plane W, therefore, and with the center line X1 inclination of filter containing section 15.Divide 16 formation position to be formed with step portion 10c at the inner peripheral surface of outflow side tubular body 10 corresponding to described large-diameter portion.Divide 16 shape to be formed with at the outer circumferential face of this outflow side tubular body 10 corresponding to large-diameter portion along first 10d that radially extends and second 10e dividing 16 centerline direction to extend along large-diameter portion.

Described large-diameter portion divides the center line X1 and the less side (left side of Figure 17) of parting plane W angulation of the filter containing section 15 of 16 inner peripheral surface, divide 16 center line X3 (only being shown in Figure 18) to extend along large-diameter portion, on the other hand, the side that the center line X1 of filter containing section 15 and parting plane W angulation are bigger (right side of Figure 17) is extended along the center line X1 of filter containing section 15.Why forming large-diameter portion like this and divide 16 inner peripheral surface, is in order in the forming process of outflow side tubular body 10 the mould (not shown) of this inner peripheral surface that can will be shaped on the center line X1 of filter containing section 10 direction when these outflow side tubular body 10 demouldings to be extracted.

As shown in figure 18, divide 16 inner peripheral surface to be formed with outflow side step portion 16a and be positioned at the inflow side step portion 16b of the position of leaving the inflow side from this outflow side step portion 16a at described large-diameter portion.Large-diameter portion divides the part between two step portion 16a, the 16b of 16 inner peripheral surfaces to be set at the welding portion 16c that is soldered to inflow side tubular body 11.Described outflow side step portion 16a and welding portion 16c follow large-diameter portion and divide 16 circumferencial direction to extend to ring-type.

On the other hand, as shown in figure 17, described inflow side tubular body 11 comprises: be the main wall portion 21 of the drum that the near linear shape extends and form the urceolus part 22 that the upper end portion with main wall portion 21 has surrounded.The end face of outflow one side of main wall portion 21 and urceolus part 22 forms along parting plane W.The center line X2 of inflow side tubular body 11 and parting plane W near normal straight line shape extend, and inflow side tubular body 11 is set to the straight tube shape.Therefore, be formed with curved section 23 in the anastomosis part of 3 liang of tubular bodies of housing 10,11 of sump strainer 1.

It is little that the external diameter of main wall portion 21 is set than the filter containing section 15 of described outflow side tubular body 10, is the closer to the more little mild wedge-type shape of downside diameter.The lower ending opening of this main wall portion 21 partly constitutes described machine oil outflow opening 11a.Be formed with towards the outstanding annulus 24 that extends along circumferencial direction of radial outside at the upper end portion of main wall portion 21 outer circumferential face.Annulus 24 is with integrally formed in the projected direction outer end of this annulus 24.Be formed with the gap between the upper end portion of urceolus part 22 and main wall portion 21, in this gap, be furnished with a plurality of ribs 25 that main wall portion 21 and urceolus part 22 are coupled together, and these a plurality of ribs 25 maintain on the circumferencial direction of urceolus part 22 at interval.

The external diameter of described urceolus part 22 be set divide than large-diameter portion 16 little.The outer circumferential face of this urceolus part 22 divides 16 inner peripheral surface extension along large-diameter portion.As shown in figure 18.Be formed with outflow side step portion 22a and be positioned at the inflow side step portion 22b of the position of leaving the inflow side from this outflow side step portion 22a at the outer circumferential face of urceolus part 22.Part between two step portion 22a, the 22b is set at the welding portion 22c that is soldered to described welding portion 16c.In welding process described later, the outflow side step portion 22a of described urceolus part 22 is positioned as the outflow side step portion 16a appearance in opposite directions with described outflow side tubular body 10, and, the inflow side step portion 22b of described urceolus part 22 is positioned as the inflow side step portion 16b appearance in opposite directions with described outflow side tubular body 10 too.

Be formed with the outstanding filter standing part 22d that extends to ring-type towards the outflow side in the end, outflow side of described urceolus part 22.The section shape of this filter standing part 22d is the shape sharp more the closer to the outflow side, and the end of outflow side is positioned at the top, end, outflow side of main wall portion 21.

Described filter 2 is done as a whole being along what the center line of filter containing section 15 extended a bottom tube-like, is arranged in it in the filter containing section 15 and its bottom one side is positioned at and flows out a side.Bottom and circumferential wall part at filter 2 are formed with the mesh part 2a that is configured for filter oil, are formed with the flange portion 2b that extends outwardly diametrically in opening one side of an opposite side with the bottom of filter 2.The center line of this flange portion 2b and filter 2 is reported to the leadship after accomplishing a task, and extends along parting plane W.As shown in figure 18, the external diameter of this flange portion 2b is set greatlyyer than the internal diameter of filter containing section 15, and divides 16 internal diameter smaller than large-diameter portion.This flange portion 2b embeds the step portion 10c of outflow side tubular body 10 and is clamped by this step portion 10c and described filter standing part 22d on thickness direction.So, filter 2 just is fixed on the housing 3.Described mesh part 2a is provided with a plurality of rib 2c, and these ribs 2c, mesh part 2a and flange portion 2b are integrally formed by resin material.

Next, the manufacture method by the sump strainer 1 of above-mentioned formation is described.At first, utilize injection molding method be shaped described outflow side tubular body 10 and inflow side tubular body 11.Filter 2 also is shaped by injection molding method.At this moment, because inflow side tubular body 11 is straight tube shapes, so can make the structure of mould very simple.

Afterwards, go to utilize ultrasonic bonding that outflow side tubular body 10 and inflow side tubular body 11 are welded together and incorporate welding process.As shown in figure 18, this moment, used ultrasonic welding machine A comprised that supporting fixture A1, the supporting of the described outflow side of supporting tubular body 10 flow into the vibratory tool A2 of side pipe shape body 11, utilize add the shake device A3 of ultrasound by vibratory tool A2 vibration.Supporting fixture A1 is arranged in downside, vibratory tool A2 and add the upside that the device A3 that shakes is arranged in supporting fixture A1.Described supporting fixture A1 is provided with the piece A11 that moves along the vertical direction when outflow side tubular body 10 is installed or unloaded down.

At first, the large-diameter portion from described outflow side tubular body 10 divides 16 1 sides that described filter 2 is inserted.The flange portion 2b one of this filter 2 arrives and embeds the step portion 10c of outflow side tubular body 10, and filter 2 is just located by step portion 10c.Large-diameter portion divide 16 1 sides towards above state under allow supporting fixture A1 support outflow side tubular body 10.In this case, allow the piece A11 of supporting fixture A1 get off at the beginning, after under this state outflow side tubular body 10 being inserted supporting fixture A1, allow piece A11 rise, so just finished to the determining positions that flows out side pipe shape body 10 with 10 supporting these work well of outflow side tubular body.And, urceolus part 22 1 sides towards below state under flow into side pipe shape body 11 by vibratory tool A2 supporting.That is to say, in welding process, the position of outflow side tubular body 10 and inflow side tubular body 11 relation, it is up and down anti-comparing with the user mode of finished product, and promptly outflow side tubular body 10 is positioned at downside, and inflow side tubular body 11 is positioned at upside.And allow the large-diameter portion of outflow side tubular body 10 divide 16 center line X3 consistent with the center line X2 of the main wall portion 21 of inflow side tubular body 11 this moment.

Supporting by supporting fixture A1 under the state of described outflow side tubular body 10, because it is 16 also more outstanding beyond radially than filter containing section 15 that large-diameter portion divides, thus supporting fixture A1 with divide 16 and first 10d and second 10e of formation contact corresponding to described large-diameter portion.Equally, because the urceolus part 22 of inflow side tubular body 11 is also more outstanding outward than main wall portion 21 diametrically, so vibratory tool A2 contacts with the inflow side end face of urceolus part 22.

Shown in the white arrow among Figure 18, allow vibratory tool A2 move towards the below, the large-diameter portion that the urceolus part 22 of inflow side tubular body 11 is just inserted outflow side tubular body 10 divides 16, and soon, the welding portion 16c of outflow side tubular body 10 just contacts with the welding portion 22c of inflow side tubular body 11.At this moment, the outflow side step portion 16a of outflow side tubular body 10 and the outflow side step portion 22a of inflow side tubular body 11 in opposite directions, simultaneously, the inflow side step portion 16b of outflow side tubular body 10 and the inflow side step portion 22b of inflow side tubular body 11 are in opposite directions.

Afterwards, the below is pressed to vibratory tool A2 in the limit, and lateral dominance produces ultrasonic vibration with adding the device A3 that shakes, and utilizes frictional heat to allow the welding portion 16c of outflow side tubular body 10 and the welding portion 22c of inflow side tubular body 11 melt.Inflow side tubular body 11 moves towards the below along with welding portion 16c, 22c fusing.Like this, as shown in figure 19, just constitute the space by described two outflow side step portion 16a, 22a, this space becomes the outflow side welding burr containing section S1 that is positioned at outflow one side, also form the space by described two inflow side step portion 16b, 22b, this space becomes the inflow side welding burr containing section S2 that is positioned at inflow one side.That is to say that the outflow side of welding portion 16c, 30c and inflow side are formed with outflow side welding burr containing section S1 and inflow side welding burr containing section S2 respectively.When the displacement distance towards described inflow side tubular body 11 becomes predetermined distance, filter standing part 22d just meets the flange portion 2b of filter 2, become flange portion 2b by the state of outflow side tubular body 10 and 11 clampings of inflow side tubular body, allow add the device A3 that shakes stop the vibration, allow vibratory tool A2 stop to move simultaneously towards the below.

In described welding process, produce welding burr that extends towards the outflow side from welding portion 16c, the 22c of outflow side tubular body 10 and inflow side tubular body 11 and the welding burr that extends towards the inflow side.The welding burr that extends towards the outflow side is incorporated in outflow side welding burr containing section S1, and the welding burr that extends towards the inflow side is incorporated among the inflow side welding burr containing section S2.

As mentioned above, the sump strainer 1 related according to this embodiment, because make the center line X1 inclination of the parting plane W of housing 3 with respect to inflow side tubular body 11, so can under the inflow side tubular body 11 that makes the straight tube shape state that the center line X1 of outflow side pipe shape body 10 tilts relatively, inflow side tubular body 11 be engaged with this outflow side tubular body 10, thereby can form curved section 23 in the anastomosis part of 3 liang of tubular bodies of housing 10,11.So, just can make the simple structureization of the mould of shaping inflow side tubular body 11, reduce the cost of sump strainer 1, can form two curved sections 13,23 at housing 3 simultaneously, the shape set degrees of freedom of this housing 3 is improved, machine oil inflow entrance 11a is arranged in the food tray on the desirable position.

The position of the curved section 23 of the anastomosis part of described housing 3 just is easy to change by the position that changes parting plane W.Parting plane W by changing housing 3 just can at random change the bend angle and the direction of the curved section 23 of housing 3 with respect to angle of inclination and the direction of the center line X2 of inflow side tubular body 11.

Can with from welding portion 16c, 22c towards the outflow side and the welding burr that extends of inflow side be accommodated in respectively outflow side and inflow side welding burr containing section S1, the S2.So, because the welding burr does not come off from housing 3, just can not be inhaled into together in the sump strainer 1, thereby the mesh that can prevent filter 2 stops up with oil so weld burr.

In this embodiment, make the annulus 24 of inflow side tubular body 11 be positioned at also close outflow one side, but be not limited to this, annulus 24 can be arranged on the position the same with welding portion 22c on the centerline direction than welding portion 22c.So, welding portion 22c just can make rigidity improve by annulus 24 from the inboard supporting.The result is in welding process, can prevent that welding portion 22c from slipping out towards inboard displacement.

Can also form curved section 33 at inflow side tubular body 11 as Figure 21 and variation 2 shown in Figure 22.So, just can the limit housing 3 be divided into outflow side tubular body 10 and inflow side tubular body 11, the limit forms three curved sections 13,23,33 at housing 3.So because can further improve the degrees of freedom that the formation of housing 3 is set, so more easily other interior obstacle of food tray is avoided on the limit, the limit arranges sump strainer 1.

In this embodiment, housing 3 and filter 2 are monomer, but are not limited to this, can allow the main wall portion 21 of filter 2 and inflow side tubular body 11 integrally formed.So, the components number that constitutes sump strainer 1 is reduced, thereby reduce the assembling procedure number.And, can also make filter 2 and outflow side tubular body 10 integrally formed.

In this embodiment, make the center line X1 inclination of the parting plane W of housing 3, but be not limited to this, the parting plane W of housing 3 and the center line X2 of inflow side tubular body 11 are tilted with respect to outflow side tubular body 10.

In welding process, can also support with vibratory tool A2 and flow out side pipe shape body 10, flow into side pipe shape body 11 with supporting fixture A1 supporting, allow outflow side tubular body 10 vibrate.

Described sump strainer 1 not only can use as the oily filtration fraction of internal combustion office, can also use as the oily filtration fraction of the automatic transmission of automobile, other dynamic power machine etc.

-industrial applicibility-

In sum, filter involved in the present invention and sump strainer, the most suitable internal combustion that is arranged on In the food tray of office.

Claims (14)

1. sump strainer, the inside of the sump strainer main body that is welded at centerline direction one end of centerline direction one end of first tubular body and second tubular body is provided with filter, it is characterized in that:

The internal diameter of described first tubular body, one end is set greatlyyer than the external diameter of described second tubular body, one end;

Described first tubular body, one end be provided with first welding portion interior week, a side and the opposite side at the centerline direction of comparing more close described first tubular body with this first welding portion is respectively arranged with the first space component part simultaneously;

The periphery of described second tubular body, one end is provided with second welding portion that is welded on described first welding portion, and a side and the opposite side at the centerline direction of comparing more close described second tubular body with this second welding portion is respectively arranged with the second space component part that constitutes welding burr containing section with the first space component part jointly simultaneously.

2. sump strainer according to claim 1 is characterized in that:

First welding portion and second welding portion lay respectively at diametrically than on the more outstanding position of the main wall portion of first tubular body and second tubular body.

3. sump strainer according to claim 1 is characterized in that:

A tubular body in the filter and first tubular body and second tubular body is integrally formed.

4. sump strainer according to claim 1 is characterized in that:

Each monomer naturally of sump strainer main body and filter,

Described filter is provided with the retained part that is clamped by first tubular body and second tubular body.

5. the manufacture method of a sump strainer, this sump strainer is such, the inside of the sump strainer main body that is welded at centerline direction one end of centerline direction one end of first tubular body and second tubular body is provided with filter, it is characterized in that:

Comprise:

The first tubular body forming process, on the interior week of described first tubular body, one end first welding portion is set, a side and the opposite side at the centerline direction of comparing close described first tubular body with this first welding portion is provided with the first space component part respectively simultaneously;

The second tubular body forming process, on the interior week of described second tubular body, one end second welding portion is set, a side and the opposite side at the centerline direction of comparing more close described second tubular body with this second welding portion is provided with the second space component part respectively simultaneously; And

Welding process, after described first tubular body forming process and the described second tubular body forming process, one end of described second tubular body is inserted an end of described first tubular body, described first welding portion and described second welding portion are welded, form welding burr containing section by described first space component part and the described second space component part simultaneously.

6. the manufacture method of sump strainer according to claim 5 is characterized in that:

In welding process, utilize spin welding or ultrasonic welding that first welding portion and second welding portion are welded.

7. a filter is to comprise bottom and the tubular filter of circumferential wall part, it is characterized in that:

Described circumferential wall part comprises mesh part that convection cell filters and in order to strengthen the rib of this mesh part, it is polygon up to the section shape of the other end direction vertical with center line that described circumferential wall part forms from an end of the centerline direction of this circumferential wall part;

Described mesh part, described rib and described bottom are integrally formed with resin material.

8. filter according to claim 7 is characterized in that:

The fluid that the mesh part is had is set greatlyyer than the opening area in downstream side by the hole at the opening area of the mobile upstream side of fluid.

9. filter according to claim 7 is characterized in that:

Fluid forms by the internal face in hole: will be directed to the flow direction of the fluid in the described circumferential wall part by this fluid by the fluid in hole.

10. fuel filter is characterized in that:

Comprise:

The described filter of claim 7, and

Take in described filter and have ostium that the fluid before filtering flows into and filter by this filter after the housing of the tap hole that flows out of fluid,

On described housing, be formed with the cylindrical part that the circumferential wall part with described filter impales.

11. fuel filter according to claim 10 is characterized in that:

The tap hole of housing is connected on the lubricant oil inlet hole that is arranged on the mobile engine.

12. sump strainer, comprise: housing is used for filter oil filtration device with being incorporated in this housing, described housing is an end tubular that has the machine oil inflow entrance, has the machine oil outflow opening in another end, and first tubular body that the parting plane that is used in the centerline direction middle part is cut apart and second tubular body are bonded with each other and form, and it is characterized in that:

Favour the center line of described first tubular body and in this housing, be formed with curved part by the parting plane that makes described housing.

13. sump strainer according to claim 12 is characterized in that:

An engaged at end of a tubular body in first tubular body and second tubular body is formed with installation in another end of this tubular body and uses lip part on another tubular body, is formed with curved part at the middle part of this tubular body.

14. sump strainer according to claim 13 is characterized in that:

The middle part of another tubular body in first tubular body and second tubular body is formed with curved part.

Images