CN102953784A - Magnetic filter and vehicle-use apparatus with the same - Google Patents
Magnetic filter and vehicle-use apparatus with the same Download PDFInfo
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- CN102953784A CN102953784A CN2012102654078A CN201210265407A CN102953784A CN 102953784 A CN102953784 A CN 102953784A CN 2012102654078 A CN2012102654078 A CN 2012102654078A CN 201210265407 A CN201210265407 A CN 201210265407A CN 102953784 A CN102953784 A CN 102953784A
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Abstract
The invention provides a magnetic filter and a vehicle-use apparatus with the same. The magnetic filter can effectively increase the adsorbing capacity of the foreign substance comprising metal grinding powders and other magnetic powders, without increasing the size and weight of the overall dimensions. The magnetic filter (1) is installed inside a housing (50) of a vehicle-use motor or speed changer for adsorbing and removing the metal wearing powder contained in the operating oil inside the housing (50). In addition, the magnetic filter (1) is formed by the injection moulding product of the ferrite. The magnetic filer comprises a frame (10) and a flat central portion (20) arranged at the inner side of the frame (10) across the hollow gap (30). The central portion (20) is greater than the frame (10) in thickness. The magnetization direction is along the thickness direction of the central portion (20) and the frame (10). As the magnetic conductivity of the central portion (20) and the frame (10) are improved, the adsorbing capacity of the metal wearing powder contained in the operating oil inside the housing (50) can be effectively increased.
Description
Technical field
The present invention relates to by being installed in the vehicles such as motor, speed changer, differential attachment with in the housing of device, the slag inclusion that is made of Magnaglo that the working oil in this housing is contained adsorbs the magnetic filter of removing and the vehicle device that possesses magnetic filter.
Background technique
In the devices such as the motor of automobile and the vehicle such as two-wheeled, speed changer, differential attachment, the slide part that exists the parts such as piston and ring, gear, band to slide each other.At such slide part, owing to the surface of parts is produced the slag inclusion that is made of magnetic powder such as galling powder (below, have in this manual the situation that only it is called the galling powder) by pruning.If such galling powder is clipped between the slide part, then can causes parts friction level each other to improve or work and make the parts heating as lapping paste.In addition, owing to can hinder the smoothly action of parts, also become the major reason of the power transmission efficiency decline that causes device.In addition, owing to the degree of wear of acceleration components makes the lost of life, also can become the reason that unfavorable conditions such as causing fault produces.
Therefore, all the time, propose to be useful on the technology of the galling powder in the housing of removing speed changer etc.For above-mentioned galling powder, general using is removed by the magnetic filter that permanent magnet consists of.As such conventional example, for example shown in patent documentation 1 to 3, the technology that is provided with for the magnetic filter of the galling powder of removing working oil is disclosed in the housing of for motor vehicle motor, speed changer, oil-collecting disk etc.
In addition, particularly in the situation of the speed changer that is consisted of by band type stepless speed changing mechanism (CVT) etc., can discharge a lot of galling powder from the slide part of band.Therefore, if the galling powder separation that the working oil that will not circulate in housing is contained is also removed, then owing to the working oil that contains the galling powder exists the power transmission efficiency that causes speed changer to reduce such problem in the each several part circulation of speed changer.; present situation is; in existing magnetic filter, still do not develop and have following such magnetic filter than high absorption property: can access in order fully to remove the needed absorption of the galling powder amount of removing in speed changer etc. is equipped on the housing of device of vehicle.
In order in magnetic filter, to increase the extent of adsorption of galling powder, as long as increase the boundary dimension of magnetic filter (magnet main body)., present situation is in the housing of speed changer that magnetic filter is set etc., almost not have remaining space.Therefore, if the profile of magnetic filter is maximized, then possibly can't guarantee that it arranges the space.In addition, if the profile of magnetic filter is maximized, then weight also increases simultaneously, if the weight of magnetic filter is increased, then not only can cause product cost to rise, and the weight of vehicle also can increase.The design philosophy of the reduction weight of this and current automobile fails to agree.
Patent documentation 1: TOHKEMY 2008-280910 communique
Patent documentation 2: TOHKEMY 2008-051139 communique
Patent documentation 3: TOHKEMY 2007-255516 communique
Summary of the invention
The present invention finishes in view of the above problems, and its purpose is to provide the extent of adsorption that can make the adsorbing metal abrasion powder effectively to increase and can cause the magnetic filter that boundary dimension maximizes and weight increases and the vehicle device that possesses this magnetic filter.
In order to solve above-mentioned problem, magnetic filter of the present invention be installed in vehicle with in the housing 50 of device with absorption and remove the contained slag inclusion that is consisted of by magnetic powder such as galling powder of working oil in this housing 50, the magnetic filter 1 that is consisted of by ferritic injection-molded article, it is characterized in that, the profile of magnetic filter 1 is for having frame section 10, flat pattern with the central part 20 of the inboard of being located at this frame section 10 across the clearance portion 30 of hollow, the thickness size of described central part 20 is the large size of thickness size than described frame section 10, has direction of magnetization M at the thickness direction of the thickness direction of described central part 20 and described frame section 10.
According to magnetic filter of the present invention, its profile is formed have frame section and be located at the flat pattern of central part of the inboard of this frame section across the clearance portion of hollow, make the thickness size of central part be the size larger than the thickness size of frame section, and constitute along the thickness direction of central part and frame section and have the direction of magnetization, thus, compare with the magnetic filter of an existing better simply shape of tabular geometric ratio, can the Effective Raise central part and the permeability of frame section.Particularly, by adopting the shape between central part and frame section, be provided with hollow gap section, can the Effective Raise central part and the permeability of frame section.Therefore, can effectively increase the extent of adsorption of the slag inclusion that is consisted of by magnetic powder such as galling powder.
In addition, in above-mentioned magnetic filter of the present invention, utilize the poor of the poor and frame section 10 of the permeability between central part 20 and the clearance portion 30 and the permeability between the clearance portion 30, make central part 20 different from the magnet operation point of frame section 10, can further increase thus the extent of adsorption of the slag inclusion that is consisted of by magnetic powder such as galling powder.
In addition, in above-mentioned magnetic filter of the present invention, by improving the permeability of central part 20 and frame section 10, can reduce the irreversible demagnetization coefficient under the low-temperature condition.Thus, can more effectively increase the extent of adsorption of the slag inclusion that is consisted of by magnetic powder such as galling powder.
In addition, in above-mentioned magnetic filter of the present invention, preferably, the thickness size of central part 20 is the size more than 1.5 times of the thickness size of frame section 10.According to this structure, because permeability that can the Effective Raise central part, therefore can more effectively increase the extent of adsorption of the slag inclusion that is consisted of by magnetic powder such as galling powder.
In addition, in above-mentioned magnetic filter, preferably, the described frame of a surface ratio section 10 of the described thickness direction of described central part 20 is outstanding, the surface with the surface opposite side of a side more outstanding than described frame section 10 of being positioned at described central part 20 is provided with the recess 21 by the described frame of this surface ratio section 10 depressions are formed.According to this structure, owing to being provided with recess on the surface with a side opposition side that given prominence to central part, therefore, in the situation of the structure that flows around the magnetic filter, can guarantee that working oil (lubricant oil) is the surface of magnetic filter and flowing smoothly near it at working oil by this recess.Thus, can more effectively adsorb and remove the contained slag inclusion that is consisted of by Magnaglo of working oil.
In addition, in above-mentioned magnetic filter, preferably, possess for this magnetic filter 1 being installed and being fixed at vehicle with the fixed block assembly department 60 of the groove shape of the housing 50 interior settings of device, that consisted of by leaf spring 40, at described magnetic filter 1 and position 10a described leaf spring 40 Elastic Contact, be provided with the tapering 11 of the inclined plane type that the direction of deviating from along described magnetic filter 1 from described assembly department 60 tilts.
According to this structure, owing to possessing for magnetic filter 1 being installed and being fixed at vehicle with the fixed block assembly department 60 of the groove shape of the housing 50 interior settings of device, that consisted of by leaf spring 40, therefore magnetic filter is being mounted to vehicle with in the housing of device the time, can easily installing by simple operation in the situation with the instrument of fixing usefulness etc.Therefore, can improve the installation efficiency of magnetic filter and the packaging efficiency that vehicle is used device.
In addition, form the tapering of inclined plane type by the position with the leaf spring Elastic Contact that makes magnetic filter, can constitute, even owing to being passed in vehicle acts on the direction that magnetic filter deviates from from assembly department effectively with the vibration of the housing of device etc. the situation, also the resistance that produces of the Elastic Contact of leaf spring also can be above the power of the directive effect of deviating from along magnetic filter from assembly department.Therefore, can prevent effectively that assembly department in housing from installing and fixing magnetic filter is deviate from and come off from assembly department.
In addition, the present invention who is used for solving above-mentioned problem is any one of motor, speed changer, differential attachment, oil-collecting disk, it is characterized in that, described vehicle possesses housing 50 with device and at the structure member of these housing 50 interior settings, and, above-mentioned any one magnetic filter 1 of the present invention is installed in the assembly department 60 of the groove shape in being located at described housing 50.
The vehicle according to the invention device, the magnetic filter that can the utilize said structure slag inclusion that is made of magnetic powder such as galling powder that the working oil in the housing is contained effectively adsorbs and removes, therefore, can suppress the generation of the unfavorable conditions such as the reduction of power transmission efficiency and fault.In addition, owing to can magnetic filter be mounted to assembly department in the housing by simple operation, therefore, can improve vehicle with the packaging efficiency of device.And even be input in the situation of housing along with travelling of vehicle etc. in interference such as vibrations, the magnetic filter that is installed in the housing also is not easy to come off, and therefore, can improve vehicle with the durability of device.
And above-mentioned label illustrates the label of the structural element of mode of execution described later as an example of the present invention.
According to magnetic filter of the present invention, can make the effective increase of the extent of adsorption of adsorbing the slag inclusion that is consisted of by Magnaglo and can not cause profile to maximize and the weight increase, according to the vehicle device that this magnetic filter is installed, can suppress the generation of the unfavorable conditions such as the reduction of power transmission efficiency and fault, and, can realize the raising of packaging efficiency.
Description of drawings
Fig. 1 (a)～Fig. 1 (c) is the figure that the magnetic filter of the 1st mode of execution of the present invention is shown, and Fig. 1 (a) is plan view, and Fig. 1 (b) is the figure of section that the X-X direction of Fig. 1 (a) is shown, and Fig. 1 (c) is side view.
Fig. 2 (a)～Fig. 2 (c) is the figure of shape that the magnetic filter of the comparative test of carrying out galling powder extent of adsorption and low temperature demagnetizing factor is shown.
Fig. 3 illustrates the Schedule that magnetic filter is exposed to the measurement result of the change in magnetic flux density before and after the low-temperature condition.
Fig. 4 (a) and Fig. 4 (b) are the figure that the comparison that the surface magnetic flux density of magnetic filter distributes is shown.
Fig. 5 (a)～Fig. 5 (c) is the figure that is illustrated in the assembly department that is used for the installation magnetic filter that arranges in the case of transmission, Fig. 5 (a) is assembly department and the partial enlarged drawing around it that the internal surface that is positioned at housing is shown, Fig. 5 (b) is the figure of section that the A-A direction of Fig. 5 (a) is shown, and Fig. 5 (c) is the figure of section that the B-B direction of Fig. 5 (a) is shown.
Fig. 6 (a)～Fig. 6 (c) illustrates the figure that magnetic filter is installed on the state of the assembly department in the housing, Fig. 6 (a) illustrates assembly department and the partial enlarged drawing around it that magnetic filter is installed, Fig. 6 (b) is the figure of section that the A-A direction of Fig. 6 (a) is shown, and Fig. 6 (c) is the figure of section that the B-B direction of Fig. 6 (a) is shown.
Fig. 7 (a) and Fig. 7 (b) are the figure that the magnetic filter of the 2nd mode of execution of the present invention is shown, and Fig. 7 (a) is plan view, and Fig. 7 (b) is plan view.
Fig. 8 (a) and Fig. 8 (b) are the figure that the magnetic filter of the 3rd mode of execution of the present invention is shown, and Fig. 8 (a) is plan view, and Fig. 8 (b) is plan view.
Fig. 9 (a) and Fig. 9 (b) are the figure that the magnetic filter of the 4th mode of execution of the present invention is shown, and Fig. 9 (a) is plan view, and Fig. 9 (b) is plan view.
Figure 10 (a) and Figure 10 (b) are the figure that the magnetic filter of the 5th mode of execution of the present invention is shown, and Figure 10 (a) is plan view, and Figure 10 (b) is plan view.
Figure 11 (a) and Figure 11 (b) are the figure that the magnetic filter of the 6th mode of execution of the present invention is shown, and Figure 11 (a) is plan view, and Figure 11 (b) is plan view.
Label declaration
1～1-6: magnetic filter;
10: frame section;
10a: end face;
11: the tapering;
20: central part;
21: recess;
30: clearance portion;
40: leaf spring (fixed block);
41: elastic contact chip;
41a: elastic contact part;
41b: free end;
43: egative film;
50: housing;
51: internal surface;
52: fitting surface;
60: assembly department;
60a: inner side surface;
65: the gap.
Embodiment
Below, with reference to accompanying drawing embodiments of the present invention are described in detail.
(the 1st mode of execution)
Fig. 1 is the figure that the magnetic filter 1 of the 1st mode of execution of the present invention is shown, and Fig. 1 (a) is plan view, and Fig. 1 (b) is the figure of section that the X-X direction of Fig. 1 (a) is shown, and Fig. 1 (c) is side view.And in Fig. 1 (a) and Fig. 1 (c), so that the state diagram of leaf spring (fixed block) 40 to be installed, described leaf spring 40 is used for the assembly department 60(that arranges at housing 50 described later is installed and be fixed to magnetic filter 1 with reference to Fig. 2).The magnetic filter 1 of present embodiment is for the slag inclusion absorption that is made of magnetic powder such as galling powder in the housing of the motor by being installed in four-wheeled vehicle and autobicycle, speed changer, differential attachment etc. that the working oil in the housing is contained and the parts of removing.This magnetic filter 1 is made of the permanent magnet of binding magnet (bond magnet) type of ferrite molding and forming, as shown in Figure 1, this magnetic filter 1 has the profile of the substantially planar (flat pattern) that is made of frame section (outer frame) 10 of square shape roughly and central part (protuberance) 20, and this central part (protuberance) 20 is located at the inboard of this frame section 10 across the clearance portion 30 of hollow.
In the past, the magnetic filter that arranged in the housing of for motor vehicle motor, speed changer, oil-collecting disk etc. uses ferrite sintered magnet mostly., because sintered magnet is to make by the powder metallurgy method for making, so the degrees of freedom of its shape is less, can only form as a comparison oblong-shaped or the cylindrical shape of simple shape.And, there is the situation of the following process behind sintering, need to carry out shape, still, usually, the cutting of the magnetic parts of tool etc. can't be carried out simply.Therefore, for fear of these problems, the magnetic filter 1 of present embodiment uses ferrite molding and forming magnet.Thus, compare with existing ferrite sintered magnet, can improve the degrees of freedom of the shape of magnetic filter 1.
Like this, in the magnetic filter 1 of present embodiment, by adopting molding and forming magnet, its shape can be more freely designed, therefore various shapes can be adopted.When the magnetic filter 1 of design present embodiment, made preproduction through simulation, and tested.Thus, developed the magnetic filter 1 of following such shape: can reduce weight, the cancellation following process is not wasted material as far as possible, and the extent of adsorption of the galling powder in the absorption working oil is increased to greatest extent.
(explanation of material)
For the molding and forming magnet of the magnetic filter 1 that consists of present embodiment, the material that uses the synthetic resin material by the ferrite dust of 80～95 % by weight and 5～20 % by weight to mix carries out moulding in magnetic field.For ferrite dust, preferred strontium is anisotropic material, and the granularity of preferred 1 μ m～2 μ m.In addition, the synthetic resin material preferably uses the high nylon of high heat resistance 6 or PPS(polyphenylene sulfide).And when ferrite dust less than 80 % by weight, magnetic force is less, and can't realize enough extent of adsorption of galling powder.On the other hand, if ferrite dust surpasses 95 % by weight, then the mobile variation owing to material causes the moulding difficult.
(explanation of shape)
As shown in Figure 1, the magnetic filter 1 of present embodiment has by the clearance portion 30 of the frame section 10 of square shape roughly, hollow and the profile that is located at the substantially planar (flat pattern) that the central part 20 of the overshooting shape of frame section 10 inboards consists of across clearance portion 30.And, implement magnetization along the thickness direction (the M direction shown in Fig. 1 (b)) of frame section 10 and central part 20.Frame section 10 also can form OBL quadrilateral shape, round-shaped, elliptical shape etc. except the quadrilateral shape that forms roughly square shape as shown in Figure 1.In addition, the central part 20 that is configured in frame section 10 inboards also can form the jut of ball shape or elliptical shape etc. except forming the shaft-like jut (protuberance) of as shown in Figure 1 straight line.For the clearance portion (space portion) 30 that is located between frame section 10 and the central part 20, so long as the hollow penetration hole that runs through along the thickness direction of frame section 10 and central part 20, its concrete shape is not limited to illustrate such OBL penetration hole, also can be other shape.
In addition, in the magnetic filter 1 of present embodiment, a surface of the thickness direction of central part 20 (surface of the nearby side of Fig. 1 (a)) is more outstanding than frame section 10.And, on surface (surface of the depth side of Fig. 1 (a)) central part 20 and a surface opposite side side of giving prominence to than frame section 10, be provided with the recess 21 that these surface ratio frame section 10 depressions are formed.
(explanation of Magnaglo absorption)
In general, magnet increases along with the size of the intensity of the remanent flux density Br of magnet, thickness size (height of operation point), area the adsorption force of iron plate and becomes large.In addition, magnet adsorption can form image magnet (reflection magnetite) in the iron plate side in the situation of iron plate, and can think has the situation of two identical magnet identical with absorption.Therefore, the thickness size of the magnet in the design becomes 2 times naturally, thereby permeability is also risen, and the operation point of magnet also uprises.The magnetic flux of the magnet surface of iron plate face is effectively used to the iron plate side shifting., be adsorbed in the situation of a magnet surface at the Magnaglo that is consisted of by galling powder etc., only supply with the needed magnetic flux of absorption from magnet surface.
In addition, in general, compare with the central part of magnet, in the end of magnet, because the magnet face of the homopolarity that approaches is less, so demagnetized field diminishes, and the operation point uprises.Therefore, the galling powder of absorbate is attracted to the end of magnet, and the extent of adsorption at the central part place of magnet tails off, and can't obtain effective extent of adsorption.Because the Magnaglo that is made of galling powder etc. along magnetic flux line absorption is so arrange partly the closeer part of magnetic flux line.As the countermeasure to this, the result who has repeatedly carried out various experiments and simulation is, magnet as the magnetic filter 1 that is used for present embodiment, in the central authorities of frame section 10 thickness size (height dimension) central part 20 larger than this frame section 10 is set, and, configuration clearance portion 30 and make the gradient of magnetic flux rapider between frame section 10 and central part 20 thus, can be designed Effective Raise to the magnet of the adsorption force of the galling powder that is made of Magnaglo.
Namely, can confirm by experiment, compare with the existing tabular magnet of simple shape that waits, as the magnetic filter 1 of present embodiment, have the profile of the flat pattern that is consisted of by frame section 10, clearance portion 30, central part 20 and implemented magnetized magnet along the thickness direction of frame section 10 and central part 20, have the effectively effect of increase of extent of adsorption that makes the galling powder.(with reference to embodiment described later.）
(explanation of the size of each several part)
At this, the preferred size of the each several part of magnetic filter 1 is described.The boundary dimension of magnetic filter 1 is less, and the extent of adsorption of galling powder just more reduces.Therefore, preferably make the boundary dimension (length dimension at the longest position) of frame section 10 for more than the 10mm, more preferably more than the 15mm.In addition, the thickness size (height dimension) that is configured in the central part 20 of frame section 10 inboards is preferably more than the 4mm.In addition, the thickness size of magnetic filter 1 is preferably more than the 1mm in frame section 10, is more preferably more than the 2mm.In addition, if the thickness size of frame section 10 is below the 1mm, then permeability reduces and can't obtain sufficient magnetic force.
In general, owing to be subject to the impact of demagnetized field from the end (outside) of magnet, so there is the trend of magnet operation point reduction in the central part of magnet.In order not to be subject to such impact, can consider to make the thickness size of central part to adopt larger shape.Therefore, in the magnet of the magnetic filter 1 that is applied to present embodiment, preferably make central part 20 have the thickness size more than 1.2 times of the frame section 10 in the outside, more preferably have the thickness size more than 1.5 times.Accordingly, the gradient of magnetic flux can be effectively formed, thereby the extent of adsorption of galling powder can be effectively increased.
And the thickness size of central part 20 (height dimension) is preferably below the 15mm.If the thickness size of central part 20 surpasses 15mm, then under magnetic filter 1 being arranged at the situation of the vehicles such as motor, speed changer, differential attachment with the limited space in the housing of device, the mobile variation of the working oil that flows around magnetic filter 1 might have problems in the action of device.Particularly, if the thickness size of central part 20 is more than the 20mm, then as the magnetic filter 1 that uses in device at vehicle, thickness size is excessive, therefore, might can't be mounted to the interior limited space of housing of speed changer etc.
And, in the magnetic filter 1 of present embodiment, by configuration clearance portion 30 between central part 20 and frame section 10, can reduce demagnetized field to the impact of central part 20 and frame section 10.That is, suppose very close to each other 30, then the effect of magnetic flux gradient diminishes, and can see that the extent of adsorption of galling powder reduces.By forming clearance portion 30, can improve partly the permeability of central part 20 and frame section 10, therefore, can form larger magnetic flux at central part 20 and frame section 10.And the size (gap size) of the clearance portion 30 of observing from the face side (paper under the state shown in Fig. 1 (a) is side nearby) of magnetic filter 1 is preferably more than the 1mm, is more preferably more than the 2mm.
(explanation of irreversible demagnetization)
Irreversible demagnetization thereby stable can not occur in ferrite magnet under the condition of high temperature, but at low-temperature condition irreversible demagnetization can occur.Solve countermeasure as it, the general method that adopts is, the thickness size of the direction of magnetization by increasing magnet improves permeability., in this method, can cause the volume and weight of magnet to increase.Therefore, in the magnetic filter 1 of present embodiment, make the central part 20 that arranges in the inboard of frame section 10 improve its operation point than frame section's 10 height (thick), and, clearance portion 30 is set around central part 20.Thus, the permeability of central part 20 rises, thereby can improve the operation point.Around clearance portion 30, there is frame section 10, owing to have clearance portion 30, so the permeability of frame section 10 also rises.By adopting such structure, the irreversible demagnetization under the low-temperature condition can be suppressed less.
Like this, magnetic filter 1 according to present embodiment, by constituting, making its profile is the flat pattern that has frame section 10 and be located at the central part 20 of these frame section 10 inboards across clearance portion 30, and the thickness direction along central part 20 and frame section 10 has the direction of magnetization, has improved thus the permeability of frame section 10 and central part 20.Particularly, by adopting the shape between frame section 10 and central part 20, be provided with clearance portion 30, can Effective Raise frame section 10 and the permeability of central part 20.Therefore, the extent of adsorption of galling powder is effectively increased.
In addition, in the magnetic filter 1 of present embodiment, utilize the poor of the poor and frame section 10 of the permeability between central part 20 and the clearance portion 30 and the permeability between the clearance portion 30, make the magnet operation point of central part 20 different from the magnet operation point of frame section 10.Thus, the extent of adsorption of galling powder is increased more effectively.
In addition, in the magnetic filter 1 of present embodiment, by improving the permeability of central part 20 and frame section 10, can reduce the irreversible demagnetization coefficient under the low-temperature condition.Thus, can more effectively increase the extent of adsorption of galling powder.
In addition, in the magnetic filter 1 of present embodiment, preferably the thickness size of central part 20 is set as the size more than 1.5 times of the thickness size of frame section 10.According to this structure, can more effectively improve the permeability of frame section 10 and central part 20, therefore, the extent of adsorption of galling powder is increased.
(embodiment)
Below, as embodiments of the invention, the laboratory data that the comparison of galling powder extent of adsorption, low temperature demagnetizing factor and surface magnetic flux density of the magnetic filter of magnetic filter 1 by carrying out the 1st mode of execution and other shapes draws is shown.Fig. 2 is the figure of shape that the magnetic filter of the comparative test of having carried out galling powder extent of adsorption and low temperature demagnetizing factor is shown, Fig. 2 (a) is the figure that the magnetic filter 1 of present embodiment is shown, Fig. 2 (b) is the figure that the magnetic filter 100 of another shape is shown, and Fig. 2 (c) is the figure that the magnetic filter 200 of another shape is shown.In addition, to each figure of Fig. 2 (c), (i) being plan view at Fig. 2 (a), (ii) is plan view.
As previously mentioned, the magnetic filter 1 of Fig. 2 (a) is the shape with central part 20, frame section 10 and clearance portion 30.In addition, the magnetic filter 100 of Fig. 2 (b) is to have the volume that equates with magnetic filter 1 and form the roughly foursquare flat so-called simple flat magnet that does not have projection and depression.In addition, the magnetic filter 200 of Fig. 2 (c) is following such shape: have the volume that equates with magnetic filter 1, and from top view to shape identical with magnetic filter 1, but the thickness size of central part 220 equates with the thickness size of frame section 210, and is not outstanding with respect to frame section 230 across the central part 220 that clearance portion 230 arranges.
When under the same conditions relatively with respect to the extent of adsorption of the magnetic filter 1,100 of above-mentioned three kinds of shapes, 200 iron powder, the iron powder adsorption amount of the magnetic filter 1 shown in Fig. 2 (a) is 52.7g, the iron powder adsorption amount of the magnetic filter 100 shown in Fig. 2 (b) is 37.2g, and the iron powder adsorption amount of the magnetic filter 200 shown in Fig. 2 (c) is 35.8g.In addition, in the measurement result of the variation of the Magnetic flux density that shown in the Schedule of Fig. 3 each magnetic filter 1,100,200 is exposed to the each point (each point of P1～P12 shown in Figure 2) before and after the predetermined low-temperature condition (at this utmost point low-temperature condition for-40 ℃).As shown in Figure 3, in the magnetic filter 1 of Fig. 2 (a), low temperature irreversible demagnetization coefficient is 0～-1.1%, and is relative therewith, and in the magnetic filter 100 of Fig. 2 (b), low temperature irreversible demagnetization coefficient is-4.6%～-5.7%.In addition, in the magnetic filter 100 of Fig. 2 (c), low temperature irreversible demagnetization coefficient is-0.6%～-1.8%.
In addition, Fig. 4 is the figure that the comparison that the surface magnetic flux density of magnetic filter 1 and magnetic filter 100 distributes is shown, Fig. 4 (a) is the figure that the surface magnetic flux density distribution of magnetic filter 1 is shown, and Fig. 4 (b) is the figure that the surface magnetic flux density distribution of magnetic filter 100 is shown.In addition, in each figure of Fig. 4 (a) and (b), be magnetic filter 1,100 plan view (i), (ii) be magnetic filter 1,100 plan view, (iii) be the plotted curve that surface magnetic flux density distributes is shown.Such as (i) of each figure, (ii) shown in, the measured value that magnetic filter 1,100 surface magnetic flux density distribute is, the roughly neutral position broad ways of the short transverse in magnetic filter 1,100 front described linearlyly and the measured value that obtains.
As the plotted curve of Fig. 4 (a) and (b) (iii) shown in, in the magnetic filter 100 of existing flat pattern, confirm the surface magnetic flux density that connects paracentral position and descend with respect to the surface magnetic flux density of the both sides of width direction, and whole surface magnetic flux density is all not too high.Relative therewith, in the magnetic filter 1 of present embodiment, by the central authorities in frame section 10 thickness size (height dimension) central part 20 larger than this frame section 10 is set, also between frame section 10 and central part 20, configure clearance portion 30, thus, so that the surface magnetic flux density of central part 20 obviously improve with respect to the surface magnetic flux density of frame section 20.
(explanation of installation method)
Next, the installation method that the magnetic filter 1 with said structure is mounted in the housing of speed changer etc. describes.The magnetic filter 1 of present embodiment is made for synthetic resin such as nylon, and, use in the working oil in speed changer, therefore, it is not preferred using Bond when installing in the housing of speed changer etc.The housing of speed changer or oil-collecting disk are that the casting by aluminium manufactures.And, for the plastic magnetic filters 1 such as nylon are mounted to these housings or oil-collecting disk, generally adopt the mechanical fixing means such as riveted joint, screw threads for fastening, tightening of rivet., for the installation that utilizes these mechanical fixing means to realize, its operation is very numerous and diverse, needs a lot of workloads and activity duration.
In the installation that utilizes riveted joint as described above, screw threads for fastening, tightening of rivet to realize, magnetic filter 1 directly is mounted to the assembly department of housing or oil-collecting disk, perhaps, be mounted to assembly department via pedestal.In the situation that magnetic filter 1 directly is mounted to housing or oil-collecting disk, need to use the instruments such as Riveting Tool, spanner, riveting hammer (リ ベ ッ ト Collapse) to install.In addition, in the situation that install via pedestal, also need following operation: the pedestal that utilizes above-mentioned instrument that magnetic filter 1 will be installed in advance is fixed to the assembly department of housing., for the installation exercise that uses above-mentioned instrument, housing or the narrow space in the oil-collecting disk that instrument must be inserted into speed changer carry out, and its operating efficiency is relatively poor.
Therefore, in the present embodiment, as being used in the situation that do not use instrument as described above magnetic filter 1 to be mounted to the structure of the inside of housing or oil-collecting disk, constitute as described later, utilize the fixed block that consisted of by leaf spring 40 magnetic filter 1 to be installed and is fixed to assembly department 60(Fig. 5 reference of the groove shape (concavity) that the internal surface 51 at housing 50 forms).
Fig. 5 is the figure for the assembly department 60 that magnetic filter 1 is installed that is illustrated in the housing 50 interior settings of speed changer, Fig. 5 (a) is assembly department 60 and the partial enlarged drawing around it that is illustrated in the internal surface formation of housing 50, Fig. 5 (b) is the figure of section that the A-A direction of Fig. 5 (a) is shown, and Fig. 5 (c) is the figure of section that the B-B direction of Fig. 5 (a) is shown.In addition, Fig. 6 illustrates the figure of state that magnetic filter 1 is mounted to the assembly department 60 of housing 50, Fig. 6 (a) illustrates assembly department 60 and the partial enlarged drawing around it that magnetic filter 1 is installed, Fig. 6 (b) is the figure of section that the A-A direction of Fig. 6 (a) is shown, and Fig. 6 (c) is the figure of section that the B-B direction of Fig. 6 (a) is shown.And, in Fig. 6, be not with section but side-looking observes to illustrate magnetic filter 1.
As shown in Figure 5, from its internal surface 51 along excavating groove shape (concavity) part that forms with the direction (direction towards the paper inboard Fig. 5 (a)) of fitting surface 52 quadratures, assembly department 60 is made of the slot part along the general flat shape of the profile of magnetic filter 1 near the assembly department 60 that the internal surface 51 of housing 50 arranges is a bight at housing 50.Assembly department 60 has height dimension (depth dimensions) H and the width dimensions S that can take in whole magnetic filter 1.In addition, for the thickness size of assembly department 60, compare with the thickness size D1 of the two side portions of width direction, the thickness size D2 of central part is larger size (D1＜D2).And, be the part of D1 at the thickness size of both sides, take in the less frame section 10 of thickness size of magnetic filter 1, be the part of D2 at the thickness size of central authorities, take in the larger central part of thickness size 20.
As shown in Figure 6, the magnetic filter 1 that is installed on the assembly department 60 of housing 50 is fixed from the state that assembly department 60 comes off preventing by leaf spring (fixed block) 40.Shown in Fig. 1 (a) and Fig. 1 (c), the thin tabular parts that leaf spring 40 is made for elastic metallic, have and both ends of the surface 10a, the 10a elastic connecting of the magnetic filter 1 a pair of elastic contact chip 41 that engages, 41 and with the egative film 43 that links up between this a pair of elastic contact chip 41,41 that contacts to earth, form roughly コ font.For the elastic contact chip 41,41 that the two ends with egative film 43 are connected, it becomes crooked to the inside elastic contact part 41a, 41a midway, and its terminal free end 41b, 41b is crooked laterally.And, the bi-side of the both ends of the surface 10a of the internal surface of elastic contact part 41a, 41a and magnetic filter 1, the width direction of 10a(frame section 10) and elastic connecting contacts to earth and engages.
The part of among the both ends of the surface 10a of magnetic filter 1, the 10a and elastic contact part 41a leaf spring 40,41a Elastic Contact becomes with the tapering 11,11 along with the inclined plane type that tilts towards the egative film 43 of leaf spring 40 and to the mode of the outside expansion of width direction.This tapering 11,11 forms along the angle of the inclination of elastic contact part 41a, the 41a of leaf spring 40.
Shown in Fig. 6 (b), magnetic filter 1 with sandwiched between inner side surface 60a, the 60a of its both ends of the surface 10a, 10a and assembly department 60 elastic contact chip 41 of leaf spring 40,41 state is installed on assembly department 60. Elastic contact chip 41,41 is under the state between inner side surface 60a, the 60a of the both ends of the surface 10a that is sandwiched in magnetic filter 1,10a and assembly department 60, become the state that its flexure plane stretches a little, elastic contact chip 41,41 is with the state of bringing into play elastic force and both ends of the surface 10a, the 10a butt of magnetic filter 1.Thus, magnetic filter 1 is installed with the state that embeds securely, deviate from from assembly department 60 in order to be not easy.
And, be provided with along magnetic filter 1 from assembly department the tapering 11,11 that 60 directions of deviating from (the Z direction of Fig. 6 (b)) tilt at both ends of the surface 10a, the 10a of magnetic filter 1, elastic contact chip 41 by making leaf spring 40,41 and this tapering 11,11 butts, magnetic filter 1 constitutes the assembly department 60 that is not easy from housing 50 and comes off.Namely, there is following situation, because the input of the external force (interference) that is passed to the vibration of the housing 50 that is provided with assembly department 60 or accompanies with travelling of vehicle, the power (below, be called " deviating from direction power ") that the direction (Z direction) that wish deviates from from assembly department 60 is arranged in magnetic filter 1 effect sometimes.In this case, because elastic contact part 41a, the 41a of leaf spring 40 and the frictional force (friction factor) between the tapering 11,11, produce with above-mentioned and deviate from the resistance that direction power is resisted mutually.And, at this, set tapering 11,11 angle of inclination and the elastic force of leaf spring 40 so that this resistance surpasses above-mentioned mode of deviating from direction power.Therefore, shown in Fig. 6 (b), in a pair of elastic contact chip 41 that utilizes leaf spring 40 to have, 41 clampings under the state of both ends of the surface 10a, 10a of magnetic filter 1, can prevent that magnetic filter 1 from throwing off to the opposition side (top of Fig. 1 (a)) of egative film 43 with respect to leaf spring 40.
Like this, constitute in the present embodiment, arrange with respect to the disengaged direction of throwing off from assembly department 60 tapering 11 that tilt, inclined plane type by the end face 10a at the magnetic filter 1 of flat pattern, and leaf spring 40 is contacted to earth with these tapering 11 elastic connectings engage, prevent that thus magnetic filter 1 from coming off from the assembly department 60 of housing 50.In addition, constitute, by using the fixed block that is consisted of by leaf spring 40 as described above, magnetic filter 1 can be firmly fixed at the small space in the housing 50 of speed changer etc.
In addition, in the magnetic filter 1 of present embodiment, by the surface (back side) in the opposite side in the surface (front) of the side that is positioned at is given prominence to of central part 20 recess 21 is set, shown in Fig. 6 (a), between the internal surface of magnetic filter 1 and assembly department 60, guaranteed gap 65.Thus, can guarantee flowing smoothly along the working oil (lubricant oil) of the back side of magnetic filter 1.Therefore, can effectively adsorb and remove the contained galling powder of working oil in the housing 50.
In addition, in the present embodiment, owing to possessing for the leaf spring 40 of the magnetic filter 1 of said structure being installed and is fixed to the assembly department 60 in the housing 50, therefore magnetic filter 1 is being mounted to the vehicle such as speed changer when interior with the housing 50 of device, can easily installing by simple operation in the situation with the instrument of fixing usefulness etc.Therefore, can improve the installation efficiency of magnetic filter 1 and the packaging efficiency that vehicle is used device.
(the 2nd mode of execution)
Next, the 2nd mode of execution of the present invention is described.And, in the explanation of the 2nd mode of execution and corresponding accompanying drawing, to the structure division mark identical label identical or suitable with the 1st mode of execution, and the detailed description of in following content, omitting this part.In addition, for the item except the item of following explanation, identical with the 1st mode of execution.Fig. 7 is the figure that the magnetic filter 1-2 of the 2nd mode of execution of the present invention is shown, and Fig. 7 (a) is plan view, and Fig. 7 (b) is plan view.In the magnetic filter 1-2 of present embodiment, it is plane that the recess that is located at its back side 21 that not only has by the magnetic filter 1 of cancelling the 1st mode of execution forms the back side of frame section 10 and central part 20, and be formed with columned kick 12 at the back side (surface of a side of the surface opposite of a side that is positioned at is given prominence to of central part 20) of frame section 10.Kick 12 is a plurality of uniformly-spaced to be formed with at the back side of frame section 10.In the present embodiment, by above-mentioned kick 12, can magnetic filter 1-2 and assembly department 60(Fig. 4 with reference to) internal surface between guarantee the gap.
(the 3rd mode of execution)
Next, the 3rd mode of execution of the present invention is described.Fig. 8 is the figure that the magnetic filter 1-3 of the 3rd mode of execution of the present invention is shown, and Fig. 8 (a) is plan view, and Fig. 8 (b) is plan view.In the magnetic filter 1-3 of present embodiment, its frame section 10 is formed roughly foursquare planar, be formed with the central part 20 of column at the center (from the center of top view) of this frame section 10.And 4 positions (respectively 4 positions corresponding with 4 bights of frame section 10) around central part 20 are formed with the clearance portion 30 that is made of penetration hole.Central part 20 is quadrangular shape roughly, become with respectively corresponding with the clearance portion 30 at 4 positions four jiaos cut the shape that forms.In addition, in the magnetic filter 1-3 of present embodiment, also the back side of frame section 10 and central part 20 is formed identical plane of magnetic filter 1-2 with the 2nd mode of execution, be formed with a plurality of kicks 12 at the back side of frame section 10.
(the 4th mode of execution)
Next, the 4th mode of execution of the present invention is described.Fig. 9 is the figure that the magnetic filter 1-4 of the 4th mode of execution of the present invention is shown, and Fig. 9 (a) is plan view, and Fig. 9 (b) is plan view.The magnetic filter 1-4 of present embodiment possesses: frame section 10, and it has four limits of straight line shape, and forms the roughly square shape of hollow; With central part 20, it is configured in the inside of this frame section 10, and forms the column with roughly cross sectional shape.At four jiaos of the periphery of the cross section that surrounds central part 20, dispose and frame section 10 between 4 clearance portion 30 forming.Each clearance portion 30 is made of the roughly foursquare penetration hole corresponding with four jiaos of frame section 10.In addition, in the magnetic filter 1-4 of present embodiment, also the back side of frame section 10 and central part 20 is formed identical plane of magnetic filter 1-2 with the 2nd mode of execution, be formed with a plurality of kicks 12 at the back side of frame section 10.
(the 5th mode of execution)
Next, the 5th mode of execution of the present invention is described.Figure 10 is the figure that the magnetic filter 1-5 of the 5th mode of execution of the present invention is shown, and Figure 10 (a) is plan view, and Figure 10 (b) is plan view.The magnetic filter 1-5 of present embodiment possesses: frame section 10, and it has four limits of straight line shape, and forms the roughly square shape of hollow; With central part 20, it is configured in the inside of this frame section 10, and forms the column with circular sectional shape.At four jiaos of the periphery of the circular cross-section of surrounding central part 20, dispose and frame section 10 between 4 clearance portion 30 forming.The penetration hole that forms between the round sides of each clearance portion 30 by each angle in four jiaos of frame section 10 and central part 20 consists of.In addition, in the magnetic filter 1-5 of present embodiment, also the back side of frame section 10 and central part 20 is formed identical plane of magnetic filter 1-2 with the 2nd mode of execution, be formed with a plurality of kicks 12 at the back side of frame section 10.
(the 6th mode of execution)
Next, the 6th mode of execution of the present invention is described.Figure 11 is the figure that the magnetic filter 1-6 of the 6th mode of execution of the present invention is shown, and Figure 11 (a) is plan view, and Figure 11 (b) is side view.The magnetic filter 1-6 of present embodiment possesses: frame section 10, and it has four limits of straight line shape, and forms the roughly square shape of hollow; With central part 20, it is configured in the inside of this frame section 10, and forms and have the roughly column of octagonal sectional shape.At four jiaos of the periphery of the octagonal cross-section of surrounding central part 20, dispose and frame section 10 between 4 clearance portion 30 forming.The penetration hole of the general triangular shape that forms between the octagonal side of each clearance portion 30 by each angle in four jiaos of frame section 10 and central part 20 consists of.In addition, in the magnetic filter 1-6 of present embodiment, also the back side of frame section 10 and central part 20 is formed identical plane of magnetic filter 1-2 with the 2nd mode of execution, be formed with a plurality of kicks 12 at the back side of frame section 10.
Above, embodiments of the present invention are illustrated, the present invention is not limited to above-mentioned mode of execution, can carry out various distortion in specification and accompanying drawing in the scope of claims and the technological thought of putting down in writing.For example, as long as magnetic filter of the present invention is the flat pattern of central part that has frame section and be located at the inboard of this frame section across the clearance portion of hollow, its concrete shape, material, size are not limited to the content shown in the respective embodiments described above.That is, as long as the concrete shape of the frame section of magnetic filter of the present invention, central part, clearance portion etc. are the shapes of permeability that can the Effective Raise each several part etc., can adopt arbitrarily shape etc.In addition, for the fixed block that is made of leaf spring that is used for magnetic filter is mounted to the assembly department of housing, the shape that it is concrete etc. also is not limited to the content shown in the above-mentioned mode of execution.
Claims (5)
1. magnetic filter, it is installed in vehicle with in the housing of device, and with absorption and remove the contained slag inclusion that is made of magnetic powder such as galling powder of working oil in this housing, described magnetic filter is made of ferritic injection-molded article,
Described magnetic filter is characterised in that,
The profile of described magnetic filter is the flat pattern with frame section and central part, and described central part is across the clearance portion of hollow and be located at the inboard of this frame section, and the thickness size of described central part is the large size of thickness size than described frame section,
Thickness direction in described central part and described frame section has the direction of magnetization.
2. magnetic filter according to claim 1 is characterized in that,
The thickness size of described central part is the size more than 1.5 times of the thickness size of described frame section.
3. magnetic filter according to claim 1 and 2 is characterized in that,
The described frame of a surface ratio section of the described thickness direction of described central part is outstanding,
The surface with the opposition side on the surface of a side more outstanding than described frame section of being positioned at described central part is provided with the recess by the described frame of this surface ratio section depression is formed.
4. the described magnetic filter of any one in 3 according to claim 1 is characterized in that,
Described magnetic filter possesses the fixed block that is made of leaf spring, and described fixed block is used for described magnetic filter is installed and is fixed in the assembly department of the groove shape that arranges in the housing of vehicle with device,
At described magnetic filter and position described leaf spring Elastic Contact, be provided with the tapering of the inclined plane type that the direction of deviating from along described magnetic filter from described assembly department tilts.
5. vehicle device, it is in motor, speed changer, differential attachment, the oil-collecting disk any one,
Described vehicle is characterised in that with device,
The structure member that described vehicle possesses housing and arranges in described housing with device, and,
The assembly department of the groove shape in being located at described housing is equipped with the described magnetic filter of any one in the claim 1 to 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-166057 | 2011-07-28 | ||
| JP2011166057A JP5677230B2 (en) | 2011-07-28 | 2011-07-28 | Magnet filter and vehicle apparatus provided with the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102953784A true CN102953784A (en) | 2013-03-06 |
| CN102953784B CN102953784B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210265407.8A Active CN102953784B (en) | 2011-07-28 | 2012-07-27 | Magnetic filter and vehicle-use apparatus with the same |
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| Country | Link |
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| JP (1) | JP5677230B2 (en) |
| CN (1) | CN102953784B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016218784A1 (en) * | 2015-10-26 | 2017-04-27 | Schaeffler Technologies AG & Co. KG | Valve control actuator with iron accumulation solenoid in oil line |
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|---|---|---|---|---|
| CN1575853A (en) * | 2003-07-02 | 2005-02-09 | 过滤技术公司 | Multiple retainer bridge |
| JP2005083491A (en) * | 2003-09-09 | 2005-03-31 | Toyota Motor Corp | Catch tank |
| JP2006022901A (en) * | 2004-07-08 | 2006-01-26 | Hitachi Constr Mach Co Ltd | Reduction gear |
| JP2008051139A (en) * | 2006-08-22 | 2008-03-06 | Jtekt Corp | Magnetic powder removing structure for power transmission for vehicle |
| JP4811340B2 (en) * | 2007-05-10 | 2011-11-09 | トヨタ自動車株式会社 | Oil storage device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0217640Y2 (en) * | 1986-08-29 | 1990-05-17 | ||
| JPS6374559U (en) * | 1986-10-31 | 1988-05-18 | ||
| JPH0427544Y2 (en) * | 1987-09-30 | 1992-07-02 | ||
| JPS63278570A (en) * | 1987-05-12 | 1988-11-16 | Ishikawa Tekko Kk | Iron powder attracting magnet |
| JPH0562764U (en) * | 1992-02-03 | 1993-08-20 | ダイハツ工業株式会社 | Magnet mounting structure inside the mission case |
| JPH05309292A (en) * | 1992-05-08 | 1993-11-22 | Toyoda Spinning & Weaving Co Ltd | Strainer |
| JP3625140B2 (en) * | 1998-09-08 | 2005-03-02 | ジヤトコ株式会社 | Magnet fixing structure for iron powder recovery of automatic transmission |
| JP2004195341A (en) * | 2002-12-17 | 2004-07-15 | Aichi Steel Works Ltd | Magnetic substance powder attracting device and magnet for the attracting device |
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2011
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1575853A (en) * | 2003-07-02 | 2005-02-09 | 过滤技术公司 | Multiple retainer bridge |
| JP2005083491A (en) * | 2003-09-09 | 2005-03-31 | Toyota Motor Corp | Catch tank |
| JP2006022901A (en) * | 2004-07-08 | 2006-01-26 | Hitachi Constr Mach Co Ltd | Reduction gear |
| JP2008051139A (en) * | 2006-08-22 | 2008-03-06 | Jtekt Corp | Magnetic powder removing structure for power transmission for vehicle |
| JP4811340B2 (en) * | 2007-05-10 | 2011-11-09 | トヨタ自動車株式会社 | Oil storage device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102953784B (en) | 2014-11-05 |
| JP5677230B2 (en) | 2015-02-25 |
| JP2013029171A (en) | 2013-02-07 |
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