CN203926539U - Spring bushing - Google Patents
Spring bushing Download PDFInfo
- Publication number
- CN203926539U CN203926539U CN201420239579.2U CN201420239579U CN203926539U CN 203926539 U CN203926539 U CN 203926539U CN 201420239579 U CN201420239579 U CN 201420239579U CN 203926539 U CN203926539 U CN 203926539U
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- CN
- China
- Prior art keywords
- spring
- cylinder
- continuous curved
- injection
- shaped compression
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Abstract
The utility model discloses spring bushing, it is characterized in that: formed by cylinder-shaped compression spring and continuous curved, the Spring Steel Wire of cylinder-shaped compression spring has square-section, cylinder-shaped compression spring between circle, leave up and down gap, the corresponding gap of each bending of described continuous curved is also inserted in this correspondence gap.The utility model uses as the endoporus lining of injection-compression molding part, cost-saving, effectively improves the adhesive strength with injection-compression molding part.
Description
Technical field
The utility model relates to the spring bushing that a kind of endoporus lining as injection-compression molding part uses.
Background technique
For strengthening the interior hole strength of injection-compression molding part, the endoporus of injection-compression molding part arranges copper sheathing or steel bushing conventionally, copper sheathing or steel bushing in the time of injection-compression molding and plastics be fixed together, the cost of copper sheathing or steel bushing is relatively high, make copper sheathing or steel bushing and plastics strong bonded in the time of injection-compression molding, the outer surface of copper sheathing or steel bushing also will carry out annular groove processing and surface knurling or gear hobbing processing.If replace copper sheathing or the steel bushing endoporus lining as injection-compression molding part with cylinder-shaped compression spring, although cost is low, but spring is axial compression in the time of injection-compression molding, the meeting tight between circle up and down of spring, plastic materials can not enter into spring up and down between circle and only in spring outer ring, cause the adhesive strength between lining and plastics poor, when use, easily occur loosening.
Summary of the invention
In view of the deficiency of background technique, the purpose of this utility model aims to provide a kind of endoporus lining as injection-compression molding part and uses, cost-saving, improves the spring bushing with injection-compression molding part adhesive strength.
The utility model takes following technological scheme to complete:
Spring bushing, it is characterized in that: formed by cylinder-shaped compression spring and continuous curved, the Spring Steel Wire of cylinder-shaped compression spring has square-section, cylinder-shaped compression spring between circle, leave up and down gap, the corresponding gap of each bending of described continuous curved is also inserted in this correspondence gap.
Adopt the spring bushing of technique scheme, first can replace copper sheathing and steel bushing to use as the endoporus lining of injection-compression molding part, cost-saving; Secondly, spring is inserted in bending by continuous curved makes between enclosing up and down spring remain minimum clearance between enclosing up and down, even if in the time of injection-compression molding, the above-mentioned gap of spring axial compression also can not disappear like this, so plastic materials just can enter into up and down between circle of spring easily, thereby effectively improve the adhesive strength of spring bushing and injection-compression molding part.
As preferably, the upper and lower end of described continuous curved is provided with resilient fold and fastens the upper and lower end face of cylinder-shaped compression spring.
As preferably, a cylinder-shaped compression spring configuration three or four continuous curved.。
Brief description of the drawings
The utility model has following accompanying drawing:
Fig. 1 is the directional diagram of overlooking of the present utility model,
Fig. 2 is the axial sectional view of Fig. 1.
Embodiment
As shown in the figure, spring bushing of the present utility model, formed by cylinder-shaped compression spring 1 and continuous curved 2, cylinder-shaped compression spring 1 configures three (also can four or more) continuous curved 2, article three, continuous curved 2 equidistantly arranges at the cylindrical of cylinder-shaped compression spring 1, the Spring Steel Wire of cylinder-shaped compression spring 1 has square-section, cylinder-shaped compression spring 1 between circle, leave up and down gap 3, the corresponding gap 3 of each bending 2a of described continuous curved 2 is also inserted in this correspondence gap 3, the upper and lower end of described continuous curved 2 is provided with resilient fold 2b and fastens the upper and lower end face of cylinder-shaped compression spring 1.
When above-mentioned spring bushing uses as the endoporus lining of injection-compression molding part, first can replace copper sheathing and steel bushing, cost-saving; Secondly, spring is inserted in bending by continuous curved makes between enclosing up and down spring remain minimum clearance between enclosing up and down, even if in the time of injection-compression molding, the above-mentioned gap of spring axial compression also can not disappear like this, so plastic materials just can enter into up and down between circle of spring easily, thereby effectively improve the adhesive strength of spring bushing and injection-compression molding part.
Claims (3)
1. spring bushing, it is characterized in that: formed by cylinder-shaped compression spring and continuous curved, the Spring Steel Wire of cylinder-shaped compression spring has square-section, cylinder-shaped compression spring between circle, leave up and down gap, the corresponding gap of each bending of described continuous curved is also inserted in this correspondence gap.
2. spring bushing as claimed in claim 1, is characterized in that: the upper and lower end of described continuous curved is provided with resilient fold and fastens the upper and lower end face of cylinder-shaped compression spring.
3. spring bushing as claimed in claim 1, is characterized in that: a cylinder-shaped compression spring configuration three or four continuous curved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239579.2U CN203926539U (en) | 2014-05-12 | 2014-05-12 | Spring bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420239579.2U CN203926539U (en) | 2014-05-12 | 2014-05-12 | Spring bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203926539U true CN203926539U (en) | 2014-11-05 |
Family
ID=51822353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420239579.2U Expired - Fee Related CN203926539U (en) | 2014-05-12 | 2014-05-12 | Spring bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203926539U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534002A (en) * | 2014-12-16 | 2015-04-22 | 芜湖市万华塑料制品有限公司 | Plastic spring bushing |
-
2014
- 2014-05-12 CN CN201420239579.2U patent/CN203926539U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534002A (en) * | 2014-12-16 | 2015-04-22 | 芜湖市万华塑料制品有限公司 | Plastic spring bushing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150512 |
|
| EXPY | Termination of patent right or utility model |