CN108458195A - A kind of sealing structure and forming method - Google Patents
A kind of sealing structure and forming method Download PDFInfo
- Publication number
- CN108458195A CN108458195A CN201810154208.7A CN201810154208A CN108458195A CN 108458195 A CN108458195 A CN 108458195A CN 201810154208 A CN201810154208 A CN 201810154208A CN 108458195 A CN108458195 A CN 108458195A
- Authority
- CN
- China
- Prior art keywords
- plastic part
- metal insert
- sealing structure
- host
- seal groove
- Prior art date
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
- F16L47/03—Welded joints with an electrical resistance incorporated in the joint
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention discloses a kind of sealing structure and forming method, is applied between metal insert and host plastic part, including：Seal groove is set on metal insert；Sealing ring is installed on seal groove；Tubular plastic part is sheathed on the outside of sealing ring, and host plastic part is arranged in the outside of tubular plastic part；Metal insert, tubular plastic part and host plastic part are by being molded thermal welding.Technical scheme of the present invention advantageous effect is：A kind of sealing structure and forming method are disclosed, the leakproofness between host plastic part and metal insert can be improved, further improves the reliability of Shooting Technique and practical operability, and injection molding process is simple, cost is relatively low.
Description
Technical field
The present invention relates to plastic seal technical field more particularly to a kind of sealing structures.
Background technology
In the prior art, the part with metal insert is very extensive on host plastic part, and many parts require master
It is sealing between body plastic part and metal insert.Since the material of plastic body part and the material of metal insert are different, they
Coefficient of thermal expansion difference it is larger, after injection molding is cooling, although host plastic part packs tightly metal insert, but it is cold to pass through multiple thermal expansion
After contracting, it is susceptible to gap between host plastic part and metal insert, is leaked.
Current solution is：First, increasing annular groove outside metal insert, as shown in Figure 1, metal insert 1a, main
Body plastic part 1b；Second is that being molded after gluing or heat-shrink tube outside metal insert, as shown in Fig. 2, metal insert 2a, host plastic
Part 2b；But during prolonged use, there are the following problems：(1) metal insert increases annular groove or injection molding is encapsulated
Part can the case where also will produce gap between host plastic part and metal insert after prolonged use, be susceptible to leakage
It is not high by property；(2) gluing or increase the scheme being molded after heat-shrink tube outside metal insert, temperature is more than 300 when due to injection molding
Degree Celsius, general fluid sealant or heat-shrink tube heatproof are not achieved, and when injection molding is susceptible to high temperature ageing failure phenomenon, can actually grasp
The property made is not high.
Invention content
For the above-mentioned problems in the prior art, a kind of sealing structure and forming method are now provided.
Specific technical solution is as follows：
A kind of sealing structure is applied between metal insert and host plastic part, including：
One seal groove is set on the metal insert；
One sealing ring is installed on the seal groove；
One tubular plastic part, is sheathed on the outside of the sealing ring, and the main body is arranged in the outside of the tubular plastic part
Plastic part；
The metal insert, the tubular plastic part and the host plastic part are by being molded thermal welding.
Preferably, the metal insert and the host plastic part integrated injection molding.
Preferably, the metal insert is equipped with cylindrical portion, and the seal groove is set in the cylindrical portion.
Preferably, the size of the sealing ring and the size of the seal groove match.
Preferably, the tubular plastic part is interference fitted with the metal insert.
Preferably, the tubular plastic part and the host plastic part hot-melt adhesive paste.
Preferably, the tubular plastic part is made with the host plastic part of otherwise identical plastic material.
A kind of forming method of sealing structure, including following steps：
A seal groove is arranged in step S1 on metal insert first；
Step S2 is installed on using a sealing ring on the seal groove；
Step S3 is sheathed on the outside of the sealing ring using a tubular plastic part, is set on the outside of the tubular plastic part
Set a host plastic part.
Preferably, including the sealing structure described in above-mentioned any one, the electric machine controller include being used for input signal
Or the metal electrode of output signal, using the metal electrode as the metal insert.
Preferably, including the sealing structure described in above-mentioned any one, the DC-DC converter include output electrode, with
The output electrode is as the metal insert.
Technical scheme of the present invention advantageous effect is：A kind of sealing structure and forming method are disclosed, main body can be improved
Leakproofness between plastic part and metal insert further improves the reliability of Shooting Technique and practical operability, and
Injection molding process is simple, and cost is relatively low.
Description of the drawings
With reference to appended attached drawing, more fully to describe the embodiment of the present invention.However, appended attached drawing be merely to illustrate and
It illustrates, and is not meant to limit the scope of the invention.
Fig. 1 is in the prior art, about the structure sectional view for increasing annular groove outside metal insert；
Fig. 2 is in the prior art, about the structure sectional view being molded after gluing outside metal insert or heat-shrink tube；
Fig. 3 is the structure sectional view about sealing structure in the embodiment of the present invention；
Fig. 4 is the flow chart of the forming method about sealing structure in the present invention；
Fig. 5 is the structure sectional view of the metal electrode about electric machine controller in the embodiment of the present invention；
Fig. 6 is the structure sectional view of the output electrode about dcdc converter in the embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of not making creative work it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The invention will be further described in the following with reference to the drawings and specific embodiments, but not as limiting to the invention.
The present invention includes a kind of sealing structure, is applied between metal insert 1 and host plastic part 2, including：
One seal groove 10, is set on metal insert 1；
One sealing ring 3, is installed on seal groove 10；
One tubular plastic part 4 is sheathed on the outside of sealing ring 3, the outside setting host plastic part 2 of tubular plastic part 4；
Metal insert 1, tubular plastic part 4 and host plastic part 2 are by being molded thermal welding.
By the technical solution of above-mentioned sealing structure, as shown in figure 3, applied to metal insert 1 and host plastic part 2 it
Between, sealing structure includes sealing ring 3 and tubular plastic part 4, and sealing ring 3 is installed in the seal groove 10 on metal insert 1, tubular
Plastic part 4 is sheathed on the outside of sealing ring 3, the outside setting host plastic part 2 of tubular plastic part 4；Entire sealing structure is used for
Sealing metal inserts 1 and host plastic part 2, simple in structure, cost is relatively low, and can be effectively improved host plastic part 2 and gold
Belong to the leakproofness between inserts 1, further improves the working efficiency of Shooting Technique.
In a kind of preferably embodiment, metal insert 1 and 2 integrated injection molding of host plastic part.
Specifically, during injection molding, metal insert 1 and 2 integrated injection molding of host plastic part, wherein metal insert
1 both ends extend outwardly, and are higher than the two sides of host plastic part 2, this is the needs of Shooting Technique.
In a kind of preferably embodiment, metal insert 1 is equipped with cylindrical portion, and seal groove 10 is set to cylindrical portion
On.
In a kind of preferably embodiment, the size and the size of seal groove 10 of sealing ring 3 match.
Specifically, seal groove 10 is set on metal insert 1, and size and the size of sealing ring 3 match, and further change
Leakproofness between philanthropist's body plastic part 2 and metal insert 1 so that the unfailing performance of sealing structure is more preferable.
In a kind of preferably embodiment, tubular plastic part 4 is interference fitted with metal insert 1.
Specifically, interference fit connection includes various ways, and tubular plastic part 4 is connected to metal insert 1 using plunging
Cylindrical surface on so that injection molding process is simple, is suitable for interference volume or the smaller occasion of size.
In a kind of preferably embodiment, tubular plastic part 4 and 2 hot-melt adhesive paste of host plastic part.
In a kind of preferably embodiment, tubular plastic part 4 is made with host plastic part 2 of otherwise identical plastic material.
Specifically, tubular plastic part 4 uses the plastics material of otherwise identical plastic material or characteristic close with host plastic part 2
Material, using hot melting and connecting method so that tubular plastic part 4 and the welding performance of host plastic part 2 are more preferable, can further improve
Leakproofness between metal insert 1 and host plastic part 2.
A kind of forming method of sealing structure, including following steps：
A seal groove 10 is arranged in step S1 on metal insert 1 first；
Step S2 is installed on using a sealing ring 3 on seal groove 10；
Step S3 is sheathed on the outside of sealing ring 3, one master of outside setting of tubular plastic part 4 using a tubular plastic part 4
Body plastic part 2.
By the technical solution of the forming method of above-mentioned sealing structure, as shown in figure 4, sealing ring 3 is installed on metal first
In seal groove 10 on inserts 1, then tubular plastic part 4 is sheathed on to the outside of sealing ring 3, the outside of tubular plastic part 4 is set
Set host plastic part 2；So that this method forms entire sealing structure with sealing metal inserts 1 and host plastic part 2, change
Leakproofness between philanthropist's body plastic part 2 and metal insert 1, and preparation process is simple, and cost is relatively low.
In a kind of preferably embodiment, include the sealing structure of above-mentioned any one, electric machine controller includes for defeated
Enter signal or the metal electrode of output signal, using metal electrode as metal insert 1.
Specifically, sealing structure is applied on electric machine controller, using metal electrode as metal insert 1, as shown in figure 5,
Sealing ring 3 is installed in the seal groove 10 on metal insert 1, and tubular plastic part 4 is sheathed on the outside of sealing ring 3, tubular plastics
The outside setting plastics the cover 2 of part 4, a copper bar 6 is fixed in the bottom of metal insert 1 by bolt and gasket sub-assembly 5；
Further, the sealing structure between plastics the cover 2 and metal insert 1 by tubular plastic part 3, sealing ring 4 into
Row sealing, reaches the sealing effect of metal electrode on electric machine controller, further such that for input signal or output signal
The unfailing performance of metal electrode is more preferable, and the service life is longer, and this technical process is simple, and cost is relatively low.
In a kind of preferably embodiment, include the sealing structure of above-mentioned any one, DC-DC converter includes output electricity
Pole, using output electrode as metal insert 1.
Specifically, sealing structure is used for DC-DC converter, using output electrode as metal insert 1, as shown in fig. 6, close
Seal 3 is installed in the seal groove 10 on metal insert 1, and tubular plastic part 4 is sheathed on the outside of sealing ring 3, tubular plastic part 4
Outside plastic fixtures 2 are set, in the plastic fixtures 2 setting one be symmetrically distributed in the gasket of the both sides of metal insert 1
20, an aluminum hull 21 is arranged in connection gasket 20 and the position of plastic fixtures 2, and the bottom of metal insert 1 passes through bolt and gasket
Sub-assembly 5 fixes a copper bar 6；
Further, the sealing structure between plastic fixtures 2 and metal insert 1 passes through tubular plastic part 3, sealing ring 4
It is sealed, and is provided with gasket 20 and aluminum hull 21, further strengthen the sealing effect of output electrode in DC-DC converter
Fruit so that the unfailing performance of the output electrode of DC-DC converter is more preferable, and stability is stronger, and this technical process is simple, at
This is relatively low.
The foregoing is merely preferred embodiments of the present invention, are not intended to limit embodiments of the present invention and protection model
It encloses, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Equivalent replacement and obviously change obtained scheme, should all be included within the scope of the present invention.
Claims (10)
1. a kind of sealing structure is applied between metal insert and host plastic part, which is characterized in that including：
One seal groove is set on the metal insert；
One sealing ring is installed on the seal groove；
One tubular plastic part, is sheathed on the outside of the sealing ring, and the host plastic is arranged in the outside of the tubular plastic part
Part；
The metal insert, the tubular plastic part and the host plastic part are by being molded thermal welding.
2. sealing structure according to claim 1, which is characterized in that the metal insert and host plastic part one
Injection molding.
3. sealing structure according to claim 1, which is characterized in that the metal insert is equipped with cylindrical portion, described
Seal groove is set in the cylindrical portion.
4. sealing structure according to claim 1, which is characterized in that the ruler of the size of the sealing ring and the seal groove
It is very little to match.
5. sealing structure according to claim 1, which is characterized in that the tubular plastic part and the metal insert interference
Cooperation.
6. sealing structure according to claim 1, which is characterized in that the tubular plastic part and host plastic part heat
Molten connection.
7. sealing structure according to claim 1, which is characterized in that the tubular plastic part and the host plastic part are equal
It is made of otherwise identical plastic material.
8. a kind of forming method of sealing structure, which is characterized in that include the following steps：
A seal groove is arranged in step S1 on metal insert first；
Step S2 is installed on using a sealing ring on the seal groove；
Step S3 is sheathed on the outside of the sealing ring, the outside setting one of the tubular plastic part using a tubular plastic part
Host plastic part.
9. a kind of electric machine controller, which is characterized in that including the sealing structure described in claim 1-7 any one, the electricity
Machine controller includes the metal electrode for input signal or output signal, using the metal electrode as the metal insert.
10. a kind of DC-DC converter, which is characterized in that described including the sealing structure described in claim 1-7 any one
DC-DC converter includes output electrode, using the output electrode as the metal insert.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810154208.7A CN108458195A (en) | 2018-02-22 | 2018-02-22 | A kind of sealing structure and forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810154208.7A CN108458195A (en) | 2018-02-22 | 2018-02-22 | A kind of sealing structure and forming method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108458195A true CN108458195A (en) | 2018-08-28 |
Family
ID=63216497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810154208.7A Pending CN108458195A (en) | 2018-02-22 | 2018-02-22 | A kind of sealing structure and forming method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108458195A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274116A (en) * | 2019-05-30 | 2019-09-24 | 青岛华涛汽车模具有限公司 | A kind of automobile cooling water nylon water pipe |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5150922A (en) * | 1989-01-11 | 1992-09-29 | Osaka Gas Co., Ltd. | Electrofusion joint and hot water supply header using the same |
| CN1594924A (en) * | 2004-06-22 | 2005-03-16 | 曲阜天博汽车零部件制造有限公司 | Method for sealing metal through inserts and plastics on injection moulding members |
| CN201011635Y (en) * | 2007-02-06 | 2008-01-23 | 上海奥威科技开发有限公司 | Leading-out structure of super capacitor pole column |
| CN103438316A (en) * | 2013-08-23 | 2013-12-11 | 武汉金牛经济发展有限公司 | Metal insert used for embedded type plastic pipe and provided with sealing ring |
| CN205482530U (en) * | 2016-03-22 | 2016-08-17 | 浙江艾瑞思汽车配件有限公司 | Condenser prevent that it moulds compound end cap to reveal steel |
| CN206697606U (en) * | 2017-05-27 | 2017-12-01 | 常州博瑞电力自动化设备有限公司 | A kind of equipotential water electrode assembly |
-
2018
- 2018-02-22 CN CN201810154208.7A patent/CN108458195A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5150922A (en) * | 1989-01-11 | 1992-09-29 | Osaka Gas Co., Ltd. | Electrofusion joint and hot water supply header using the same |
| CN1594924A (en) * | 2004-06-22 | 2005-03-16 | 曲阜天博汽车零部件制造有限公司 | Method for sealing metal through inserts and plastics on injection moulding members |
| CN201011635Y (en) * | 2007-02-06 | 2008-01-23 | 上海奥威科技开发有限公司 | Leading-out structure of super capacitor pole column |
| CN103438316A (en) * | 2013-08-23 | 2013-12-11 | 武汉金牛经济发展有限公司 | Metal insert used for embedded type plastic pipe and provided with sealing ring |
| CN205482530U (en) * | 2016-03-22 | 2016-08-17 | 浙江艾瑞思汽车配件有限公司 | Condenser prevent that it moulds compound end cap to reveal steel |
| CN206697606U (en) * | 2017-05-27 | 2017-12-01 | 常州博瑞电力自动化设备有限公司 | A kind of equipotential water electrode assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274116A (en) * | 2019-05-30 | 2019-09-24 | 青岛华涛汽车模具有限公司 | A kind of automobile cooling water nylon water pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180828 |
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| RJ01 | Rejection of invention patent application after publication |