CN104033611A - Dust Cover And Manufacturing Method Thereof - Google Patents
Dust Cover And Manufacturing Method Thereof Download PDFInfo
- Publication number
- CN104033611A CN104033611A CN201410056859.4A CN201410056859A CN104033611A CN 104033611 A CN104033611 A CN 104033611A CN 201410056859 A CN201410056859 A CN 201410056859A CN 104033611 A CN104033611 A CN 104033611A
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- China
- Prior art keywords
- dust
- proof cover
- assembly department
- reinforcing ring
- membranous part
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Pivots And Pivotal Connections (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The invention provides a dust cover with longer service lifetime and properties superior to the properties of products at present and a manufacturing method of the dust cover. The duct cover is cylindrical and made of runner elastomer. The dust cover comprises: a first installation part (1) formed on one end at the axial direction; a second installation part (2) formed on the other end at the axial direction; a membrane part (3) formed between the installation part (1) and the installation part (2); a first reinforcing ring (4) disposed in integration with the first installation part (1); and a second reinforcing ring (5) disposed in integration with the second installation part (2). The membrane part (3) is in a form of corrugated pipes. The third inner diameter (8) as the largest diameter is larger than any one of the first inner diameter (6) of the first reinforcing ring (4) and the second inner diameter (7) of the second reinforcing ring (5).
Description
Technical field
The present invention relates to a kind of dust-proof cover and manufacture method thereof.
Dust-proof cover of the present invention, is the tubular dust-proof cover that rubber-like elastic body forms, and comprises the 1st assembly department that is formed at axially upper one end; Be formed at the 2nd assembly department of the axial the other end; And be formed at the membranous part between two assembly departments.Two assembly departments have been wholely set reinforcing ring separately respectively.
Background technique
According to the above-mentioned dust-proof cover of patent documentation 1, be known technology, it is for sealing spherojoint at for example Motor Vehicle.This dust-proof cover stops dust or moisture to be invaded in spherojoint, reduces the replacement frequency of spherojoint, guarantees its long life.Dust-proof cover is formed by rubber-like elastic body, at two assembly departments, is wholely set respectively for this dust-proof cover being fixed on to the reinforcing ring of the mechanical components such as spherojoint.An assembly department forms sealed department, utilizes reinforcing ring that this assembly department is installed and it is docked with ball stud and knuckle.Relatively, utilize reinforcing ring another assembly department to be fixed on to the sleeve of spherojoint.Now, the bulb of ball stud, knuckle and spherojoint is installed into and can with respect to the sleeve of spherojoint, shakes and rotate.
Because stretching, compression or the crooked load producing act on the membranous part of dust-proof cover.
Existing dust-proof cover is manufactured by the mould-forming method of injection moulding etc.Under this kind of situation, membranous part is formed to general cylindrical shape, so that dust-proof cover can be from the injection machine demoulding.When dust-proof cover is installed on to spherojoint, the membranous part that forms general cylindrical shape expands to radial outside.Therefore, at membranous part, produce higher axial elasticity power.Due to this elastic force, the end face that causes dust-proof cover sealed department by excessive compression to knuckle, the therefore main wearing and tearing that increase sealed department.
In existing dust-proof cover, the internal diameter of reinforcing ring is greater than the maximum inner diameter of membranous part.Therefore, even as thering is the corrugated dust-proof cover of a plurality of folds, also can be from vulcanization die or injection moulding mold releasability, in addition, also can not damage dust-proof cover and take out the fuse in dust-proof cover.But because the internal diameter of reinforcing ring is greater than the maximum inner diameter of membranous part, therefore, when assembly department is fixed on to spherojoint, as mentioned above, the expansion of membranous part is larger.
Prior art document
Patent documentation
Patent documentation 1: German patent application discloses file No. 102006039861
Summary of the invention
The object of the present invention is to provide a kind of dust-proof cover, it still can be brought into play according to the functional characteristic than after existing product improvement through long-time use, and a kind of manufacture method of above-mentioned dust-proof cover is provided.Especially, make to act on size and the membranous part expansion diametrically of axial elasticity power of assembly department when usually using dust-proof cover separate.
According to the present invention, the manufacture method that the dust-proof cover that above-mentioned technical problem is recorded by claim 1 and claim 4 are recorded is solved.Each dependent claims is preferred mode of execution.
For solving the problems of the technologies described above, dust-proof cover of the present invention is tubular, by rubber-like elastic body, is made, and it is characterized in that, comprising: the 1st assembly department that is formed at axial one end; Be formed at the 2nd assembly department of the described axial the other end; Be formed at the membranous part between described the 1st assembly department and the 2nd assembly department; Be wholely set with described the 1st assembly department, reinforce the 1st reinforcing ring of the 1st assembly department; Be wholely set with described the 2nd assembly department, reinforce the 2nd reinforcing ring of the 2nd assembly department, described membranous part forms bellow-shaped, and the maximum inner diameter of this membranous part is greater than the internal diameter of described the 1st reinforcing ring and the internal diameter of described the 2nd reinforcing ring any one.
Here, for dust-proof cover of the present invention, can the situation as the dust-proof cover of prior art under, because being installed on spherojoint etc. or making membranous part to radial expansion because dust-proof cover compresses in the axial direction, its favourable part is all because membranous part forms bellow-shaped.That is,, owing to making in advance the maximum inner diameter of membranous part be greater than any one of internal diameter of two reinforcing rings, therefore, when assembly department is fixed on to spherojoint, the parectasis that can suppress membranous part increases.By making in advance membranous part form bellow-shaped, even if make, dust-proof cover is compressed in the axial direction in use, also can suppress axial elastic force and excessively increase, and therefore prevents that the end face of assembly department from exceedingly being pushed the mechanical component to fixed end.Like this, owing to having formed the bellow-shaped of membranous part in the fabrication stage, therefore independent with the axial elasticity power that acts on dust-proof cover.
For example, in the mould-forming method of existing injection moulding and so on, possibly cannot manufacture above-mentioned dust-proof cover.That is to say, when manufacturing above-mentioned dust-proof cover by existing injection moulding, due to radially significantly expanding of membranous part, cause the maximum inner diameter of membranous part to be greater than any one in the internal diameter of the 1st reinforcing ring and the internal diameter of the 2nd reinforcing ring, therefore cannot be by dust-proof cover from the demoulding of injection moulding metal mold.
Owing to just making during fabrication membranous part form bellow-shaped, that is, because the bellow-shaped of membranous part is not that axial compression due to dust-proof cover produces, therefore especially at dust-proof cover, bear the application of dynamic load, be only the slight mechanical load of effect.Therefore, dust-proof cover can continue the good functional characteristic of performance during length is durable.
The membranous part of above-mentioned formed bellow-shaped, can tolerate stretching load, compression load or bending load well, therefore can bring into play good durability.
In addition, by just membranous part being formed to bellow-shaped during fabrication, make the axial elasticity power that acts on when usually using less, therefore can further improve its durability.
Reinforcing ring can be formed by high rigid material, also one at least partly can be arranged in the rubber-like elastic body in assembly department.
In addition, also reinforcing ring all can be arranged in the rubber-like elastic body in assembly department.
As rubber-like elastic body of the present invention, for example, be man made rubber or thermoplasticity man made rubber.
Reinforcing ring can be formed by for example metallic material or macromolecular material.By reinforcing ring and assembly department, be set to one, can prevent that reinforcing ring is corroded, loses or prevents such as causing mechanical deterioration because of falling rocks etc.In addition, by reinforcing ring and assembly department, be set to one, the assembly department damage producing in the time of can avoiding reinforcing ring to be independently installed on outside assembly department, is therefore favourable.
Dust-proof cover of the present invention, can be used for holding flimsy parts conventionally, especially for for example joint and so on, to suppress dust or moisture, invades in the parts with the part of can be movable relatively.
Dust-proof cover of the present invention can be used for steering tie rod, shock absorber or coupling.In addition, the spherojoint of being protected by dust-proof cover of the present invention, applicable to Motor Vehicle.
The manufacture method of dust-proof cover of the present invention comprises:
The 1st step, shaping dust-proof cover, and by this dust-proof cover from the forming die demoulding, described dust-proof cover has, be wholely set described the 1st reinforcing ring described the 1st assembly department, be wholely set described the 2nd assembly department of described the 2nd reinforcing ring and form the described membranous part of general cylindrical shape;
The 2nd step, packs the dust-proof cover after the described demoulding to have bellow-shaped blank part and heated blowing mould into, seals this blowing mould;
The 3rd step, the inner side pressurization to the described dust-proof cover packing into, is adjacent to the internal face of the described blank part of described membranous part and described blowing mould, makes thus this membranous part form bellow-shaped;
The 4th step, opens described blowing mould, by the dust-proof cover of the described membranous part with bellow-shaped from described blowing mold releasability.
The advantage of above-mentioned manufacture method is the dust-proof cover that has preformed fold manufacturing.Such dust-proof cover can not only utilize existing injection moulding to manufacture.
In the 1st step, can be by the injection moulding dust-proof cover that is shaped.Injection moulding is practicable reliable mould-forming method.
In the 3rd step, can the inner side pressurization to dust-proof cover with pressurized air.For the pressurized air pressurizeing, be easy to obtain and cheapness especially environmental protection.
The dust-proof cover assembly that above-mentioned dust-proof cover is applied to spherojoint etc. and forms, can longer-term, protect spherojoint etc. to exempt from foreign damage more effectively.When usually using, only there is slight mechanical load, the load especially above-mentioned dust-proof cover effect axial pressure being produced.This is owing to just making the dustproof hood-shaped bellow-shaped that has in manufacture process.
According to the present invention, the dust-proof cover that provides longer service life performance to be better than the functional characteristic of existing product, and the manufacture method of this dust-proof cover.
Below describe the embodiment of dust-proof cover of the present invention and manufacture method thereof in detail.
Accompanying drawing explanation
The constructed profile map of the dust-proof cover that Fig. 1 means the present embodiment shape during fabrication.
Fig. 2 means the schematic isometric of shape of reinforcing ring of the dust-proof cover of the present embodiment.
Fig. 3 means the part constructed profile map of shape of the dust-proof cover assembly of the dust-proof cover that comprises the present embodiment and mechanical component.
Description of reference numerals
1: the 1 assembly department; 2: the 2 assembly departments; 3: membranous part; 4: the 1 reinforcing rings; 5: the 2 reinforcing rings; 6: the 1 internal diameters; 7: the 2 internal diameters; 8: the 3 internal diameters; 9: mechanical component
Embodiment
Fig. 1 represents dust-proof cover of the present invention shape during fabrication.The tubular dust-proof cover being formed by rubber-like elastic body, has respectively the 1st assembly department 1 and the 2nd assembly department 2 at axial two ends.The 1st assembly department 1 and the 2nd assembly department 2, be wholely set respectively the 1st reinforcing ring 4 and the 2nd reinforcing ring 5.Two reinforcing rings 4,5 form respectively roughly L shaped shape, by the high rigid material such as metallic material etc., are formed.To two reinforcing rings 4,5, be wholy set in respectively in the rubber-like elastic body of two assembly departments 1,2.To two reinforcing rings 4,5, as the detailed description of carrying out with reference to aftermentioned Fig. 3, two assembly departments 1,2 all can be fixed on to the fixedly mechanical component of object massively.
Dust-proof cover has the membranous part 3 that forms bellow-shaped by forming fold.Only utilize for example this common mould-forming method of injection moulding, cannot manufacture this kind of dust-proof cover.
By forming the membranous part 3 of bellow-shaped, the load of effect when dust-proof cover can the shape when manufacturing to bear well and enduringly usual use.Here, order is the 1st internal diameter 6 with the internal diameter of the 1st reinforcing ring 4 that the 1st assembly department 1 is wholely set, the internal diameter of the 2nd reinforcing ring 5 being wholely set with the 2nd assembly department 2 is the 2nd internal diameter 7, the maximum inner diameter that makes membranous part 3 is the 3rd internal diameter 8, during fabrication, make the 3rd internal diameter 8 be greater than any one in the 1st internal diameter 6 and the 2nd internal diameter 7.
Fig. 2 represents the 1st reinforcing ring 4 using in the 1st assembly department 1.The 1st reinforcing ring 4 forms annular, is formed in the present embodiment by metallic material.Utilize the interior week of the 1st reinforcing ring 4, keep making the 1st assembly department 1 be close to the surface of the mechanical component of fixed side.The 2nd reinforcing ring 5 using in the 2nd assembly department 2 also has same shape.
Fig. 3 represents the dust-proof cover of the present embodiment to be fixed on the embodiment of the dust-proof cover assembly of mechanical component.In Fig. 3, figure is shown with section, and the 2nd assembly department 2 is fixed in the outer circumferential face of mechanical component 9.The 2nd assembly department 2 is close to mechanical component 9.
Membranous part 3 forms bellow-shaped, has the 3rd internal diameter 8 as maximum inner diameter.Make the 3rd internal diameter 8 be greater than the 1st internal diameter 6 of the 1st reinforcing ring 4, and be greater than the 2nd internal diameter 7 of the 2nd reinforcing ring 5.
Assembly department 2 is sealed the outer circumferential face of mechanical component 9 with static mode.By whole the 2nd reinforcing ring 5 is integrally formed in the 2nd assembly department 2, can make the 2nd assembly department 2 fixing with mechanical component 9 massively.
Compare with the dust-proof cover of prior art, do not need for membranous part 3 being compressed into the axial elasticity power of bellow-shaped.That is to say, in advance the dust-proof cover of the present embodiment is manufactured and has bellow-shaped.
In dust-proof cover manufacture method of the present invention, basic manufacturing process is that first shaping has the membranous part 3 of drum, then makes dust-proof cover expand again, thereby makes dust-proof cover have the shape shown in Fig. 1.
The dust-proof cover of manufacturing like this, has two assembly departments 1,2, at two assembly departments 1,2, is wholely set respectively the 1st reinforcing ring 4 and the 2nd reinforcing ring 5.
For the manufacture of above-mentioned dust-proof cover, during shaping in the early stage, by for example injection moulding, undertaken.That is to say, in the 1st step, dust-proof cover is formed to the membranous part 3 of general cylindrical shape, make afterwards the dust-proof cover demoulding.
In the 2nd step, the dust-proof cover that is formed with the membranous part 3 of general cylindrical shape is packed in the blank part the blowing mould through heating with bellow-shaped, then airtight blowing mould.In the 3rd step, to forming before this internal pressurization of the dust-proof cover of general cylindrical shape.Thus, make the membranous part 3 of drum be close to the internal face of the bellow-shaped blank part of blowing mould.After this step finishes, dust-proof cover has the shape that can be used.In the 4th step, open blowing mould, make to have the dust-proof cover demoulding of bellow-shaped membranous part 3.
Fig. 1 represents, the dust-proof cover of manufacturing as mentioned above, have shape in the time of can be used.
Claims (6)
1. a dust-proof cover, it is tubular, by rubber-like elastic body, is made, and it is characterized in that, comprising:
Be formed at the 1st assembly department of axial one end;
Be formed at the 2nd assembly department of the described axial the other end;
Be formed at the membranous part between described the 1st assembly department and the 2nd assembly department;
Be wholely set with described the 1st assembly department, reinforce the 1st reinforcing ring of the 1st assembly department; With
Be wholely set with described the 2nd assembly department, reinforce the 2nd reinforcing ring of the 2nd assembly department,
Described membranous part forms bellow-shaped, and the maximum inner diameter of this membranous part is greater than the internal diameter of described the 1st reinforcing ring and the internal diameter of described the 2nd reinforcing ring any one.
2. dust-proof cover according to claim 1, is characterized in that,
Described the 1st reinforcing ring is formed by high rigid material, and its at least a portion is arranged in the described rubber-like elastic body of described the 1st assembly department.
3. dust-proof cover according to claim 1 and 2, is characterized in that,
Described the 2nd reinforcing ring is formed by high rigid material, and its at least a portion is arranged in the described rubber-like elastic body of described the 2nd assembly department.
4. a manufacture method for dust-proof cover described in any one in claim 1～3, is characterized in that, comprising:
The 1st step, shaping dust-proof cover, and by this dust-proof cover from the forming die demoulding, described dust-proof cover has, be wholely set described the 1st reinforcing ring described the 1st assembly department, be wholely set described the 2nd assembly department of described the 2nd reinforcing ring and form the described membranous part of general cylindrical shape;
The 2nd step, packs the dust-proof cover after the described demoulding to have bellow-shaped blank part and heated blowing mould into, seals this blowing mould;
The 3rd step, the inner side pressurization to the described dust-proof cover packing into, is adjacent to the internal face of the described blank part of described membranous part and described blowing mould, makes thus this membranous part form bellow-shaped;
The 4th step, opens described blowing mould, by the dust-proof cover of the described membranous part with bellow-shaped from described blowing mold releasability.
5. dust-proof cover manufacture method according to claim 4, is characterized in that:
In described the 1st step, by the injection moulding described dust-proof cover that is shaped.
6. according to the dust-proof cover manufacture method described in claim 4 or 5, it is characterized in that,
In described the 3rd step, the inner side pressurization with pressurized air to dust-proof cover.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013003960.6 | 2013-03-08 | ||
| DE102013003960 | 2013-03-08 | ||
| JP2013229742A JP6241209B2 (en) | 2013-03-08 | 2013-11-05 | Dust boot and manufacturing method thereof |
| JP2013-229742 | 2013-11-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104033611A true CN104033611A (en) | 2014-09-10 |
| CN104033611B CN104033611B (en) | 2018-01-23 |
Family
ID=51464514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410056859.4A Active CN104033611B (en) | 2013-03-08 | 2014-02-19 | Dust cover and its manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104033611B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664485A (en) * | 2018-12-18 | 2019-04-23 | 洛阳凯众减震科技有限公司 | The processing method of new polyurethane dust cover |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1575684B1 (en) * | 1967-02-22 | 1971-01-07 | Trw Inc | Ball joint |
| US5525112A (en) * | 1993-12-06 | 1996-06-11 | Dana Corporation | Combined seal and boot for steering shaft assembly |
| JP2007321923A (en) * | 2006-06-02 | 2007-12-13 | Nok Corp | Boot for universal coupling |
| CN101535689A (en) * | 2006-08-25 | 2009-09-16 | Zf腓特烈港股份公司 | Sealing or corrugated bellows |
| CN101287922B (en) * | 2005-10-14 | 2011-03-30 | Nok株式会社 | Boot for universal joint |
| CN102328427A (en) * | 2011-10-08 | 2012-01-25 | 芜湖市佳美橡塑制品有限公司 | Blow mold for thermoplastic elastomer |
| CN202732982U (en) * | 2012-06-21 | 2013-02-13 | 宁国市瑞普密封件有限公司 | Dustproof cover |
-
2014
- 2014-02-19 CN CN201410056859.4A patent/CN104033611B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1575684B1 (en) * | 1967-02-22 | 1971-01-07 | Trw Inc | Ball joint |
| US5525112A (en) * | 1993-12-06 | 1996-06-11 | Dana Corporation | Combined seal and boot for steering shaft assembly |
| CN101287922B (en) * | 2005-10-14 | 2011-03-30 | Nok株式会社 | Boot for universal joint |
| JP2007321923A (en) * | 2006-06-02 | 2007-12-13 | Nok Corp | Boot for universal coupling |
| CN101535689A (en) * | 2006-08-25 | 2009-09-16 | Zf腓特烈港股份公司 | Sealing or corrugated bellows |
| CN102328427A (en) * | 2011-10-08 | 2012-01-25 | 芜湖市佳美橡塑制品有限公司 | Blow mold for thermoplastic elastomer |
| CN202732982U (en) * | 2012-06-21 | 2013-02-13 | 宁国市瑞普密封件有限公司 | Dustproof cover |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664485A (en) * | 2018-12-18 | 2019-04-23 | 洛阳凯众减震科技有限公司 | The processing method of new polyurethane dust cover |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104033611B (en) | 2018-01-23 |
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