CN104033611B - Dust cover and its manufacture method - Google Patents
Dust cover and its manufacture method Download PDFInfo
- Publication number
- CN104033611B CN104033611B CN201410056859.4A CN201410056859A CN104033611B CN 104033611 B CN104033611 B CN 104033611B CN 201410056859 A CN201410056859 A CN 201410056859A CN 104033611 B CN104033611 B CN 104033611B
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- dust cover
- installation portion
- reinforcing ring
- tubular
- film portion
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Abstract
A kind of service life of present invention offer is longer and plays the dust cover of the functional characteristic better than existing product, and the manufacture method of such a dust cover.Dust cover provided by the present invention, the tubular dust cover formed for rubber-like elastic body, including：It is formed at the 1st installation portion of axially upper one end（1）；It is formed at the 2nd installation portion of the other end（2）；It is formed at two installation portions（1）、（2）Between film portion（3）；With the 1st installation portion（1）The 1st reinforcing ring being integrally provided（4）；With with the 2nd installation portion（2）The 2nd reinforcing ring being integrally provided（5）, film portion（3）It is tubular to form ripple, and as the 3rd internal diameter of its maximum gauge（8）More than as the 1st reinforcing ring（4）Internal diameter the 1st internal diameter（6）With as the 2nd reinforcing ring（5）Internal diameter the 2nd internal diameter（7）Any one.
Description
Technical field
The present invention relates to a kind of dust cover and its manufacture method.
The dust cover of the present invention, the tubular dust cover formed for rubber-like elastic body, including it is formed at the upper one end in axial direction
1st installation portion；It is formed at the 2nd installation portion of the axial other end；And the film portion being formed between two installation portions.Two installation portions respectively
Each reinforcing ring has been wholely set it.
Background technology
It is known technology according to 1 above-mentioned dust cover of patent document, it is used in such as motor vehicle close to spherojoint progress
Envelope.The dust cover is prevented in dust or moisture intrusion spherojoint, reduces the replacement frequency of spherojoint, it is ensured that its long life.
Dust cover is formed by rubber-like elastic body, in two installation portions, is wholely set respectively for the dust cover to be fixed on into spherojoint etc.
The reinforcing ring of mechanical component.One installation portion is formed as sealing, installs the installation portion using reinforcing ring and makes itself and ball stud
Docked with knuckle.Relatively, another installation portion is fixed on to the sleeve of spherojoint using reinforcing ring.Now, ball stud, turn
It is mounted to shake and rotate relative to the sleeve of spherojoint to the bulb of section and spherojoint.
Load caused by because of stretching, compression or bending acts on the film portion of dust cover.
Existing dust cover is manufactured by the manufacturing process of injection moulding etc..In which case, film portion is shaped generally as
Cylindrical shape, so that dust cover can be stripped from injection machine.When dust cover is installed on into spherojoint, general cylindrical shape is formed
Film portion to radial outside expand.Therefore, higher axial elasticity power is produced in film portion.Due to the elastic force, dust cover is caused
The end face of sealing by excessive compression to knuckle, therefore the abrasion of main increase sealing.
In existing dust cover, the internal diameter of reinforcing ring is more than the maximum inner diameter in film portion.Therefore, even if being used as has multiple pleats
The corrugated dust cover of wrinkle, can also be from sulfurizing mould or injection moulding mold releasability, in addition, can not also damage dust cover and take
The fuse gone out in dust cover.But because the internal diameter of reinforcing ring is more than the maximum inner diameter in film portion, therefore be fixed on by installation portion
During spherojoint, as described above, the expansion in film portion is larger.
Prior art literature
Patent document
Patent document 1：German patent application discloses No. 102006039861 file
The content of the invention
It is an object of the invention to provide a kind of dust cover, and it remains to play and improved according to than existing product through use for a long time
Functional characteristic afterwards, and a kind of manufacture method of above-mentioned dust cover is provided.Especially so that acted on when using dust cover usually
It is separate in size and film the portion expansion diametrically of the axial elasticity power of installation portion.
According to the present invention, above-mentioned technical problem passes through described in the dust cover described in claim 1 and claim 4
Manufacture method is addressed.Each dependent claims are preferred embodiment.
In order to solve the above technical problems, the dust cover of the present invention is tubular, it is made up of rubber-like elastic body, its feature exists
In, including：It is formed at the 1st installation portion of axial one end；It is formed at the 2nd installation portion of the axial other end；It is formed at described
Film portion between 1st installation portion and the 2nd installation portion；It is wholely set with the 1st installation portion, reinforce the 1st installation portion the 1st adds
Gu ring；It is wholely set with the 2nd installation portion, reinforces the 2nd reinforcing ring of the 2nd installation portion, the film portion is formed as ripple
It is tubular, and the maximum inner diameter in the film portion is more than any of the internal diameter of the 1st reinforcing ring and the internal diameter of the 2nd reinforcing ring
Person.
Here, for the dust cover of the present invention, in the case of will not be as the dust cover of prior art, because being installed on spherojoint
Make film portion to being radially expanded Deng or because dust cover compresses in the axial direction, all to be formed as ripple tubular because of film portion for its benefit.
That is, because the maximum inner diameter for making film portion in advance is more than any one of the internal diameter of two reinforcing rings, therefore it is fixed on by installation portion
During spherojoint, the parectasis increase in film portion can be suppressed.It is tubular by making film portion be formed as ripple in advance so that even in use
When dust cover compressed in the axial direction, can also suppress axial elastic force and excessively increase, therefore prevent the end face of installation portion by mistake
It is pressed against the mechanical component of fixing end degree.So, because the ripple that film portion has been formed in the fabrication stage is tubular, thus with effect
It is independent in the axial elasticity power of dust cover.
For example, in the manufacturing process of existing injection moulding etc, possibly above-mentioned dust cover can not be manufactured.Namely
Say, when by existing injection moulding to manufacture above-mentioned dust cover, because the radial direction in film portion significantly expands, cause film portion most
Large diameter is more than any one in the internal diameter of the 1st reinforcing ring and the internal diameter of the 2nd reinforcing ring, therefore can not be by dust cover from injection moulding
Metal die is stripped.
It is tubular due to just making film portion form ripple during fabrication, i.e. to be not due to dust cover because the ripple in film portion is tubular
Be compressed axially and produce, therefore the application field of dynamic load is especially born in dust cover, is only that the slight machinery of effect is born
Lotus.Therefore, dust cover can persistently play good functional characteristic in length durable period.
The tubular film portion of above-mentioned formed ripple, can be resistant to stretching load, compression load or bend loading well,
Therefore good durability can be played.
In addition, it is tubular that film portion just is formed as into ripple by during fabrication so that the axial direction acted in usual use
Elastic force is smaller, therefore can further improve its durability.
Reinforcing ring can be formed by high rigidity material, the rubber-like that can also be arranged at least one part in installation portion
In elastomer.
Alternatively, it is also possible to reinforcing ring is all arranged in the rubber-like elasticity body in installation portion.
As the rubber-like elastic body of the present invention, for example, artificial rubber or thermoplasticity artificial rubber.
Reinforcing ring can be formed by such as metal material or high polymer material.By the way that reinforcing ring and installation portion are arranged into one
Body, reinforcing ring can be prevented to be corroded, lose or prevent the mechanical damage caused by because of falling rocks.In addition, by by reinforcing ring
Set and be integrated with installation portion, caused installation portion damage when can avoid independent reinforcing ring being installed on the outside of installation portion
Wound, therefore be favourable.
The dust cover of the present invention, is generally used for the part being easily damaged, especially for such as joint etc, to suppress
Dust or moisture intrusion, which have, can be movable relatively in the part of part.
The dust cover of the present invention can be used for track rod, shock absorber or shaft coupling.In addition, the dust cover institute by the present invention
The spherojoint of protection, is applicable to motor vehicle.
The manufacture method of the dust cover of the present invention includes：
1st step, dust cover is shaped, and the dust cover is stripped from shaping dies, the dust cover has, is wholely set
The 1st installation portion that has the 1st reinforcing ring, the 2nd installation portion for being wholely set the 2nd reinforcing ring and formed
For the film portion of general cylindrical shape；
Second step, the dust cover after the demoulding is loaded to the tubular blank part of ripple and heated blowing
Mould, seal the blowing mold；
Third step, the inner side of the dust cover of the loading is pressurizeed, makes the sky in the film portion and the blowing mold
The internal face in hole portion is adjacent to, and the film portion is formed as ripple tubular；
4th step, the blowing mold is opened, by the dust cover with the tubular film portion of ripple from the blow mold
The tool demoulding.
The advantages of above-mentioned manufacture method, is that the dust cover with preformed fold can be being manufactured.It is such dust-proof
Cover can not possibly manufacture merely with existing injection moulding.
In the 1st step, dust cover can be shaped by injection moulding.Injection moulding is practicable reliable shaping
Method.
In third step, the inner side of dust cover can be pressurizeed with compressed air.Compressed air for pressurization is easy to obtain
Obtain and cheap, it is especially environmentally friendly.
The dust cover assembly that above-mentioned dust cover is applied to spherojoint etc. and formed, can longer-term, more effectively protect
Spherojoint etc. exempts from foreign damage.Usually in use, only slight mechanical load, especially makees to above-mentioned dust cover
The load caused by axial compressive force.This is due to just to make dust cover shape have ripple tubular in the fabrication process.
According to the present invention, there is provided service life is longer and plays the dust cover of the functional characteristic better than existing product, and
The manufacture method of the dust cover.
The embodiment of dust cover of the invention described further below and its manufacture method.
Brief description of the drawings
Fig. 1 is the constructed profile for representing the shape of the dust cover of the present embodiment during fabrication.
Fig. 2 is the schematic isometric of the shape of the reinforcing ring for the dust cover for representing the present embodiment.
Fig. 3 is that the part signal of the shape for the dust cover assembly for representing the dust cover comprising the present embodiment and mechanical component is cutd open
Face figure.
Description of reference numerals
1：1st installation portion；2：2nd installation portion；3：Film portion；4：1st reinforcing ring；5：2nd reinforcing ring；6：1st internal diameter；7：The
2 internal diameters；8：3rd internal diameter；9：Mechanical component
Embodiment
Fig. 1 represents the shape of the dust cover of the present invention during fabrication.The tubular dust cover formed by rubber-like elastic body,
Axial both ends have the 1st installation portion 1 and the 2nd installation portion 2 respectively.1st installation portion 1 and the 2nd installation portion 2, have been wholely set respectively
1st reinforcing ring 4 and the 2nd reinforcing ring 5.Two reinforcing rings 4,5 form substantially L-shaped respectively, by the Gao Gang such as metal material
Property material is formed.To two reinforcing rings 4,5, it is wholy set in respectively in the rubber-like elasticity body of two installation portions 1,2.It is right
Two reinforcing rings 4,5, the detailed description such as carried out with reference to aftermentioned Fig. 3, two installation portions 1,2 can be massively fixed on
Determine the mechanical component of purpose.
Dust cover has forms the tubular film portion 3 of ripple by forming fold.It is this logical merely with such as injection moulding
Normal manufacturing process, such a dust cover can not be manufactured.
The film portion 3 tubular by forming ripple, shape when dust cover can be to manufacture are come good and enduringly born
The load acted on when using usually.Here, the internal diameter for the 1st reinforcing ring 4 that order is wholely set with the 1st installation portion 1 is the 1st internal diameter 6,
The internal diameter for the 2nd reinforcing ring 5 being wholely set with the 2nd installation portion 2 is the 2nd internal diameter 7, and the maximum inner diameter for making film portion 3 is the 3rd internal diameter 8,
Then during fabrication, the 3rd internal diameter 8 is made to be more than any one in the 1st internal diameter 6 and the 2nd internal diameter 7.
Fig. 2 represents the 1st reinforcing ring 4 used in the 1st installation portion 1.1st reinforcing ring 4 is formed as annular, in the present embodiment
In formed by metal material.Using the inner circumferential of the 1st reinforcing ring 4, the mechanical component that keeps making the 1st installation portion 1 be close to affixed side
Surface.The 2nd reinforcing ring 5 used in 2nd installation portion 2 also has same shape.
Fig. 3 represents for the dust cover of the present embodiment to be fixed on the embodiment of the dust cover assembly of mechanical component.Illustrated in Fig. 3
There is section, the 2nd installation portion 2 is fixed in the outer peripheral face of mechanical component 9.2nd installation portion 2 is close to mechanical component 9.
Film portion 3 is formed as that ripple is tubular, has the 3rd internal diameter 8 as maximum inner diameter.Make the 3rd internal diameter 8 be more than the 1st to add
Gu the 1st internal diameter 6 of ring 4, and more than the 2nd internal diameter 7 of the 2nd reinforcing ring 5.
Installation portion 2 is sealed to the outer peripheral face of mechanical component 9 in a static manner.By the way that whole 2nd reinforcing ring 5 is integral
It is arranged in the 2nd installation portion 2, the 2nd installation portion 2 can be made massively to be fixed with mechanical component 9.
Compared with the dust cover of prior art, it is not necessary to for film portion 3 to be compressed into the tubular axial elasticity power of ripple.
That is the dust cover of the present embodiment is manufactured into advance tubular with ripple.
In the dust cover manufacture method of the present invention, basic manufacturing process is to be formed with the film of drum first
Portion 3, then expands dust cover again, so that dust cover has the shape shown in Fig. 1.
The dust cover so manufactured, there are two installation portions 1,2, the 1st reinforcing is wholely set respectively in two installation portions 1,2
The reinforcing ring 5 of ring 4 and the 2nd.
Manufacture for above-mentioned dust cover, during shaping in the early stage, carried out for example, by injection moulding.That is,
In the 1st step, the film portion 3 of general cylindrical shape is formed to dust cover, is stripped dust cover afterwards.
In second step, the dust cover in the film portion 3 formed with general cylindrical shape is loaded with the tubular blank part of ripple
And in the blowing mold by heating, then closed blowing mold.In third step, to previously formed for general cylindrical shape
The internal pressurization of dust cover.Thus, make drum film portion 3 be close to blowing mold the tubular blank part of ripple internal face.
After the step terminates, dust cover is with the shape that can be used.In the 4th step, blowing mold is opened, is made with ripple
The dust cover demoulding in pipe-shaped membrane portion 3.
Fig. 1 expressions, dust cover manufacture as described above, that there is shape when can be used.
Claims (6)
1. a kind of dust cover for spherojoint, it is tubular, is made up of rubber-like elastic body, it is characterised in that including：
It is formed at the 1st installation portion of axial one end；
It is formed at the 2nd installation portion of the axial other end；
The film portion being formed between the 1st installation portion and the 2nd installation portion；
It is wholely set with the 1st installation portion, reinforces the 1st reinforcing ring of the 1st installation portion；With
It is wholely set with the 2nd installation portion, reinforces the 2nd reinforcing ring of the 2nd installation portion,
The film portion is formed as that ripple is tubular, and the maximum inner diameter in the film portion is more than the internal diameter of the 1st reinforcing ring and described
Any one of the internal diameter of 2nd reinforcing ring, wherein,
It is separate to act on the expansion of the size and film portion of the axial elasticity power of installation portion diametrically.
2. dust cover according to claim 1, it is characterised in that
1st reinforcing ring is formed by high rigidity material, and its at least a portion is arranged at the rubber of the 1st installation portion
In gluey elastomer.
3. dust cover according to claim 1 or 2, it is characterised in that
2nd reinforcing ring is formed by high rigidity material, and its at least a portion is arranged at the rubber of the 2nd installation portion
In gluey elastomer.
A kind of 4. manufacture method of dust cover any one of claims 1 to 3, it is characterised in that including：
1st step, dust cover is shaped, and the dust cover is stripped from shaping dies, the dust cover has, is wholely set
The 1st installation portion of the 1st reinforcing ring is stated, the 2nd installation portion of the 2nd reinforcing ring is wholely set and is formed as big
Cause the columnar film portion；
Second step, the dust cover after the demoulding is loaded to the tubular blank part of ripple and heated blowing mold,
Seal the blowing mold；
Third step, the inner side of the dust cover of the loading is pressurizeed, makes the blank part in the film portion and the blowing mold
Internal face be adjacent to, the film portion is formed as ripple tubular；
4th step, the blowing mold is opened, the dust cover in the film portion tubular with ripple is taken off from the blowing mold
Mould.
5. dust cover manufacture method according to claim 4, it is characterised in that：
In the 1st step, the dust cover is shaped by injection moulding.
6. the dust cover manufacture method according to claim 4 or 5, it is characterised in that
In the third step, the inner side of dust cover is pressurizeed with compressed air.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013003960 | 2013-03-08 | ||
| DE102013003960.6 | 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 CN104033611A (en) | 2014-09-10 |
| CN104033611B true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109664485B (en) * | 2018-12-18 | 2020-09-15 | 洛阳凯众减震科技有限公司 | Processing method of polyurethane dust cover |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1512157A (en) * | 1967-02-22 | 1968-02-02 | Trw Inc | Ball joint improvements |
-
2014
- 2014-02-19 CN CN201410056859.4A patent/CN104033611B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104033611A (en) | 2014-09-10 |
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