CN201530260U - Boss teeth-shaped pad for protecting magnesium alloy wheel hub - Google Patents
Boss teeth-shaped pad for protecting magnesium alloy wheel hub Download PDFInfo
- Publication number
- CN201530260U CN201530260U CN2009203102158U CN200920310215U CN201530260U CN 201530260 U CN201530260 U CN 201530260U CN 2009203102158 U CN2009203102158 U CN 2009203102158U CN 200920310215 U CN200920310215 U CN 200920310215U CN 201530260 U CN201530260 U CN 201530260U
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- Prior art keywords
- lug boss
- magnesium alloy
- dentiform gasket
- hole
- dentiform
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- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model relates to the technical field of electrochemical corrosion protection, in particular to a boss teeth-shaped pad for protecting a magnesium alloy wheel hub, solving the problems on the process and technology in the aspects of electric corrosion protection of the magnesium alloy wheel hub. The boss teeth-shaped pad is characterized in that the outer wall where the formed boss teeth-shaped pad is embedded with holes on the wheel hub is provided with mini-sized teeth, the mini-sized teeth become insulators by micro-arc oxidation surface treatment, and the mini-sized teeth are embedded into central positioning holes of the magnesium alloy wheel hub after micro-arc oxidation treatment or pre-embedded holes of a bolt connecting hole. When a wheel positioning shaft and a wheel hub are connected with the bolt and are screwed into the bolt, the combined surface of a screwed piece is contacted with an aluminium alloy teeth-shaped pad after micro-arc oxidation, and the aluminium alloy teeth-shaped pad does not generate potential difference with the magnesium alloy wheel hub, thus eliminating electrochemical corrosion caused by the potential difference; and after the mini-teeth of the boss teeth-shaped pad are meshed tightly with the central positioning holes and the teeth-shaped surface of the inner wall of the pre-embedded holes, the sliding phenomenon is eliminated and the torsion strength of the boss teeth-shaped pad is increased.
Description
Technical field
The utility model relates to electrochemical corrosion resist technology field, especially relates to a kind of lug boss dentiform gasket of protecting the magnesium alloy vehicle wheel wheel hub.
Background technology
Magnesium alloy materials is the 21 century green material, and its proportion is 1/4 of steel, and 64% of aluminium, and phase stiffness-to-density ratio, phase strength-to-density ratio height have good shock-absorbing damping damping capacity, are widely used at automotive field.Making automotive wheel with magnesium alloy, is automotive wheels weight-saving important channel, not only energy savings consumption but also reduce exhaust emission.But magnesium alloy current potential standard only-2.73V, contact for a long time with other conductive material, easily produce difference of potential, electrochemical corrosion takes place, therefore have a strong impact on the application of magnesium alloy vehicle wheel on automobile.Be to solve the difference of potential problem that magnesium alloy vehicle wheel uses, adopted once that thermal spraying, EFI are coated with, surface laser is handled, and means such as physical chemistry vapor deposition.But automotive wheel is the more complicated constructional delails, and often needs dismounting, and it is higher that dynamic frequency is installed, in bolt tail contact surface and wearing and tearing and the damage easily of axle center knock hole contact surface.Therefore, it is very necessary using insulating material wear-resisting, anti-extruding to make the magnesium alloy vehicle wheel protective cover.
In known Chinese patent application number; it is that 200710161317.3 magnesium or magnesium alloy component have the galvanic corrosion protection isolator that is fixed on the appropriate position in the process of casting magnesium or magnesium alloy component by metallurgical binding that AM General automobile Global Tech running company application number is arranged; isolator is formed by the material with following feature; be characterized as Galvanic electric potential difference between magnesium and contacting metal parts; it is a kind of cast-in-place isolator of using; magnesium alloy is cast in around the preformed galvanic corrosion isolator; prevent that magnesium alloy vehicle wheel from producing electrocorrosion; this technology is suitable for low pressure [die or gravitational casting magnesium alloy hub; the shrinkage cavity of this explained hereafter wheel nave shrinkage porosite is serious; condemnation factor is also high, will be eliminated gradually.
And for example Chinese patent application number is 200810237901.7 to relate to a kind of magnesium alloy vehicle wheel; be provided with the cannula-like metal inserted piece consistent in the bolt connecting hole of its hub portion with the connecting bore shape; be provided with insulating medium layer between bolt connecting hole and the cannula-like metal inserted piece; dielectric layer can be coated on the inwall of bolt hole; also can use the dielectric cover; outer rim at hub portion attachment face is established groove or fin; fix the elastic medium circle; this invention is to object working medium layer under motionless object or the quiescence and medium circle; can play and electrochemical corrosion effect that isolated difference of potential causes; but as wheel; tighten under the situation dielectric layer attenuation that is squeezed at bolt; general dielectric material is difficult to bear repetitious tense-lax extruding; metal sleeve comes off with the dielectric layer attenuation for it; be difficult to protect for a long time the difference of potential of magnesium alloy hub; and for example assemble contact surface; peripheral hardware fin or groove fix the medium circle; wheel is that dynamic object is subjected to extraneous poly-cold heat build-up environmental change again; to bear the heat of high temperature that is delivered to attachment face by the brake hubs heating especially; make the medium circle expand loosening very soon and come off, also there is certain defective in this technical matters.
In sum, aspect the electrocorrosion protection of magnesium alloy vehicle wheel, there is the deficiency on the technology in above the whole bag of tricks.
Summary of the invention
The purpose of this utility model is to have technology, technical problem for the electrocorrosion protection aspect that solves magnesium alloy hub; a kind of lug boss dentiform gasket of protecting magnesium alloy hub is provided; it adopts the lug boss dentiform shape or does not have odontoid aluminum alloy pad; be treated as nonconducting object through differential arc oxidation; the magnesium alloy hub that being bumped into same process differential arc oxidation becomes nonconducting object is inlayed in the hole in advance; be bumped into the process using principle of expanding with heat and contracting with cold, simple and convenient, solid and reliable.
Above-mentioned technical matters of the present invention is mainly solved by following technical proposals: a kind of lug boss dentiform gasket of protecting magnesium alloy hub, it is characterized in that being provided with little shape tooth with the outer wall that inlay mutually in the hole on the wheel hub at the lug boss dentiform gasket of moulding, through Microarc Oxidation Surface Treatment, become insulator, be bumped in the pre-edge hole of the center positioning hole of the magnesium alloy hub of handling through differential arc oxidation or bolt connecting hole; After wheel alignment axle and wheel hub tie bolt screwed in wherein, what screw in the contact of part faying face was through the aluminum alloy dentiform gasket behind the differential arc oxidation, can not produce difference of potential with magnesium alloy hub, has eliminated difference of potential and has caused electrochemical corrosion; Little shape tooth of lug boss dentiform gasket and center positioning hole, in advance inlay the tight interlock of hole inwall toothed surface after, eliminated skidding, increased the lug boss dentiform gasket torsion strength.
As preferably, described lug boss dentiform gasket is selected the Aluminium wrought alloy material for use, through Microarc Oxidation Surface Treatment, produces superficial film, and hardness reaches Vickers 800～1000 degree, and the lug boss dentiform gasket of this moulding became no electric conductivity insulator after rete produced.
As preferably, described lug boss dentiform gasket comprises knock hole lug boss dentiform gasket, bolt boss dentiform gasket.Can use simultaneously fastening, connecting bridge at other magnesium-alloy material.
As preferably, an end of described knock hole lug boss dentiform gasket is a cylinder, and cylinder outer wall is provided with little shape tooth bar, and the other end is a circular end plate, and the circumference of circular end plate 22 is provided with tapering, and the big end of tapering is towards an end that is provided with cylinder.The modulus of little shape tooth bar is 0.1～0.5, also can make specific profile of tooth, and the groove bellmouth orifice of ccontaining circular end plate cooperatively interacts in the tapering of circular end plate and the magnesium alloy hub centre hole.The structure of this shape is a kind of embodiment of the present utility model.
As preferably, described bolt boss dentiform gasket is a cylindrical shape, and a cylindrical end is provided with the shaft shoulder, and cylindrical outside face is provided with friction teeth, is axially arranged with bolt hole.The shaft shoulder is used for location and stable dentiform gasket, and friction teeth can be made straight-tooth or other friction surface, as annular knurl etc.Its effect of the shaft shoulder is to match with design circular groove in the pre-edge hole of bolt connecting hole in magnesium alloy hub.
As preferably, one end of the center positioning hole of described magnesium alloy hub be provided with the knock hole lug boss dentiform gasket in the endoporus section of little shape tooth bar cylindrical section interference fit, the end of center positioning hole is provided with the groove of ccontaining circular end plate, and the hole of this groove is made as and has big, the outer young Microspeaker shape of internal orifice.Put into exit skirt when circular end plate, treat that magnesium alloy hub expands with heat and contract with cold after, both just fully the chucking.
As preferably, the pre-edge hole tail end of described bolt connecting hole, length is longer than the afterbody of tie bolt, and diameter is inlayed in advance and is provided with the circular groove identical with shaft shoulder geomery in the hole greater than the afterbody of tie bolt.The bolt hole afterbody is as cooperating contact surface with the friction teeth of the cylinder outside face of bolt boss dentiform gasket in the pre-edge hole.After magnesium alloy hub heating, inlay the hole in advance and expand, the bolt boss dentiform gasket of can packing into this moment, treat that magnesium alloy hub expands with heat and contract with cold after, both just hold tightly fully.
As preferably, described lug boss dentiform gasket is through Microarc Oxidation Surface Treatment, and superficial film is milky or green, and hardness is Vickers hardness 800～1000, becomes non-conductive insulating bodies.
As preferably, described magnesium alloy hub and lug boss dentiform gasket assembling place are carried out surface by micro-arc oxidation and are handled, and superficial hardness reaches Vickers 800～1000, becomes non-conductive insulating bodies.The higher positions of dynamic frequency such as dismounting, installation appear when assembling place here mainly is meant work.
As preferably, not establishing little shape tooth bar in the described knock hole lug boss dentiform gasket becomes knock hole and does not have dentiform gasket, and not establishing friction teeth in the bolt boss dentiform gasket becomes bolt and do not have dentiform gasket.These two kinds of block constructions are a kind of special cases of the present invention.
Effective benefit of the present utility model is: when assembling wheels; friction between the center of location hole of the compressive plane of bolt, friction face, wheel hub attachment face is all with lug boss dentiform or do not have dentiform gasket and contact and collide; solved the electrocorrosion that difference of potential causes; protect magnesium alloy vehicle wheel effectively, prolonged the service life of magnesium alloy vehicle wheel greatly.
Therefore, the utility model is a kind of remarkable in economical benefits, the lug boss dentiform gasket of the protection magnesium alloy hub of reasonable in design.
Description of drawings
Fig. 1 is a kind of working state structure scheme drawing of the present utility model.
Fig. 2 is a kind of knock hole lug boss dentiform gasket structural representation of the present utility model.
Exploded view when Fig. 3 is a kind of assembling the of the present utility model.
Fig. 4 is a kind of bolt boss dentiform gasket structural representation of the present utility model.
Fig. 5 is that a kind of knock hole of the present utility model does not have profile of tooth and pads and execute routine structural representation.
Fig. 6 is that a kind of bolt of the present utility model does not have profile of tooth and pads and execute routine structural representation.
Among the figure: 1. magnesium alloy hub, 11. center positioning holes, 12. pre-edge holes, 2. knock hole lug boss dentiform gasket, 21. little shape tooth bars, 22. circular end plate, 3. bolt boss dentiform gasket, 31. friction teeth, 32. shaft shoulders, 4. knock hole does not have dentiform gasket, and 5. bolt does not have dentiform gasket.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Referring to Fig. 1 to Fig. 4, present embodiment is provided with knock hole lug boss dentiform gasket 2 and bolt boss dentiform gasket 3, selects a magnesium alloy hub 1.
Wherein knock hole lug boss dentiform gasket 2 and bolt boss dentiform gasket 3 are selected the Aluminium wrought alloy material for use, and the trade mark is 6061.One end of knock hole lug boss dentiform gasket 2 is made cylindric, the equal diameters of cylinder endoporus and wheel alignment axle is covered with little shape tooth bar 21 on the cylinder outer wall, the other end is made circular end plate 22, the circumference of circular end plate 22 is provided with tapering, and tapering is big towards being provided with cylinder one end diameter.
Bolt boss dentiform gasket 3 is made cylindrical shape, it axially is through hole, and has the taper hole that cooperates with the tie bolt tail end, a cylindrical end is established a shaft shoulder 32, the small semicircle boss that the shaft shoulder 32 is set as raised cylinder 0.3mm gets final product, cylindrical outside face is covered with friction teeth 31, and the profile of tooth of friction teeth 31 is identical with little shape tooth bar 21.Adopt the impact extrusion processing mode to obtain two kinds of lug boss dentiform gaskets.
Knock hole lug boss dentiform gasket 2 and bolt boss dentiform gasket 3 process Microarc Oxidation Surface Treatment, produce superficial film, hardness reaches Vickers 800 degree, and the lug boss dentiform gasket of this moulding became no electric conductivity insulator after rete produced.
The pre-edge hole of magnesium alloy vehicle wheel 1 center positioning hole, 11 mold insert part holes and tie bolt hole afterbody is cut, the end of center positioning hole 11 is made into the circular groove of ccontaining circular end plate 22, the circular hole of groove is processed into big, the outer young Microspeaker shape of internal orifice, the circular hole size of groove equates with tapering on circular end plate 22 circumference, inlay in advance establish in the hole 12 one with the identical circular groove of the shaft shoulder 32 geomeries.
The bore portion with knock hole lug boss dentiform gasket 2 and bolt boss dentiform gasket 3 cooperate respectively in the magnesium alloy hub 1 is carried out surface by micro-arc oxidation handle, superficial hardness is a Vickers 800, makes this bore portion become non-conductive insulating bodies.
Magnesium alloy vehicle wheel 1 is put into baking oven, be warmed to 120 ℃, the center positioning hole 11 of magnesium alloy hub 1 and pre-edge hole 12 after expansion that is heated, knock hole lug boss dentiform gasket 2 of not heating and bolt boss dentiform gasket 3 are put into center positioning hole 11 and pre-edge hole 12 respectively, after treating that magnesium alloy hub 1 is cooled to normal temperature, its same-actions such as the tapering body on toothed surface, circular end plate 22 circumference, the shaft shoulder make just combining tightly mutually of magnesium alloy vehicle wheel 1 and lug boss dentiform gasket.
As Fig. 5, shown in Figure 6, be embodiment of the present utility model, wherein knock hole lug boss dentiform gasket 2 is not established little shape tooth bar 21, does not have dentiform gasket 4 with knock hole and replaces, and also not establishing friction teeth 31 in the bolt boss dentiform gasket 3 becomes a kind of bolt and does not have dentiform gasket 5.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, any structure after the simple transformation of the present utility model is all belonged to protection domain of the present utility model.
Claims (10)
1. lug boss dentiform gasket of protecting magnesium alloy hub, it is characterized in that being provided with little shape tooth with the outer wall that inlay mutually in the hole on the wheel hub at the lug boss dentiform gasket of moulding, through Microarc Oxidation Surface Treatment, become insulator, be bumped in the pre-edge hole (12) of the center positioning hole (11) of the magnesium alloy hub of handling through differential arc oxidation (1) or bolt connecting hole; After wheel alignment axle and wheel hub tie bolt screwed in wherein, what screw in the contact of part faying face was through the aluminum alloy dentiform gasket behind the differential arc oxidation; Little shape tooth of lug boss dentiform gasket and center positioning hole (11), inlay the tight interlock of hole (12) inwall toothed surface in advance.
2. the lug boss dentiform gasket of protection magnesium alloy hub according to claim 1; it is characterized in that described lug boss dentiform gasket selects the Aluminium wrought alloy material for use; through Microarc Oxidation Surface Treatment; produce superficial film; hardness reaches Vickers 800～1000 degree, and the lug boss dentiform gasket of this moulding became no electric conductivity insulator after rete produced.
3. the lug boss dentiform gasket of protection magnesium alloy hub according to claim 1 and 2 is characterized in that described lug boss dentiform gasket comprises knock hole lug boss dentiform gasket (2), bolt boss dentiform gasket (3).
4. the lug boss dentiform gasket of protection magnesium alloy hub according to claim 3; an end that it is characterized in that described knock hole lug boss dentiform gasket (2) is a cylinder; cylinder outer wall is provided with little shape tooth bar (21); the other end is circular end plate (22); the circumference of circular end plate (22) is provided with tapering, and the big end of tapering is towards an end that is provided with cylinder.
5. the lug boss dentiform gasket of protection magnesium alloy hub according to claim 3; it is characterized in that described bolt boss dentiform gasket (3) is a cylindrical shape; a cylindrical end is provided with the shaft shoulder (32), and cylindrical outside face is provided with friction teeth (31), is axially arranged with bolt hole.
6. the lug boss dentiform gasket of protection magnesium alloy hub according to claim 1 and 2; an end that it is characterized in that the center positioning hole (11) of described magnesium alloy hub (1) be provided with knock hole lug boss dentiform gasket (2) in the endoporus section of little shape tooth bar (21) cylindrical section interference fit; the end of center positioning hole (11) is provided with the groove of ccontaining circular end plate (22), and the hole of this groove is made as and has big, the outer young Microspeaker shape of internal orifice.
7. the lug boss dentiform gasket of protection magnesium alloy hub according to claim 1 and 2; pre-edge hole (12) tail end that it is characterized in that described bolt connecting hole; length is longer than the afterbody of tie bolt; diameter is greater than the afterbody of tie bolt, inlays in advance to be provided with in the hole (12) and the identical circular groove of the shaft shoulder (32) geomery.
8. the lug boss dentiform gasket of protection magnesium alloy hub according to claim 1 and 2 is characterized in that described lug boss dentiform gasket through Microarc Oxidation Surface Treatment, and hardness is Vickers hardness 800～1000, becomes non-conductive insulating bodies.
9. the lug boss dentiform gasket of protection magnesium alloy hub according to claim 1; it is characterized in that described magnesium alloy hub (1) and lug boss dentiform gasket assembling place carry out surface by micro-arc oxidation and handle; superficial hardness reaches Vickers 800～1000, becomes non-conductive insulating bodies.
10. the lug boss dentiform gasket of protection magnesium alloy hub according to claim 1 and 2; it is characterized in that not establishing in the described knock hole lug boss dentiform gasket (2) little shape tooth bar (21) becomes knock hole and does not have dentiform gasket (4), and not establishing friction teeth (31) in the bolt boss dentiform gasket (3) becomes bolt and do not have dentiform gasket (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203102158U CN201530260U (en) | 2009-09-14 | 2009-09-14 | Boss teeth-shaped pad for protecting magnesium alloy wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203102158U CN201530260U (en) | 2009-09-14 | 2009-09-14 | Boss teeth-shaped pad for protecting magnesium alloy wheel hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201530260U true CN201530260U (en) | 2010-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203102158U Expired - Lifetime CN201530260U (en) | 2009-09-14 | 2009-09-14 | Boss teeth-shaped pad for protecting magnesium alloy wheel hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201530260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514444A (en) * | 2011-12-07 | 2012-06-27 | 福建省瑞奥麦特轻金属有限责任公司 | High-strength aluminum alloy wheel |
-
2009
- 2009-09-14 CN CN2009203102158U patent/CN201530260U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102514444A (en) * | 2011-12-07 | 2012-06-27 | 福建省瑞奥麦特轻金属有限责任公司 | High-strength aluminum alloy wheel |
| WO2013083021A1 (en) * | 2011-12-07 | 2013-06-13 | 福建省瑞奥麦特轻金属有限责任公司 | High strength aluminum alloy wheel |
| CN102514444B (en) * | 2011-12-07 | 2014-04-16 | 福建省瑞奥麦特轻金属有限责任公司 | High-strength aluminum alloy wheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100721 |