CN201972919U - Serial connection combined plastic piston - Google Patents
Serial connection combined plastic piston Download PDFInfo
- Publication number
- CN201972919U CN201972919U CN2011200550145U CN201120055014U CN201972919U CN 201972919 U CN201972919 U CN 201972919U CN 2011200550145 U CN2011200550145 U CN 2011200550145U CN 201120055014 U CN201120055014 U CN 201120055014U CN 201972919 U CN201972919 U CN 201972919U
- Authority
- CN
- China
- Prior art keywords
- upper sheet
- lower sheet
- sheet
- rod
- sheet body
- 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.)
- Expired - Lifetime
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- Lining Or Joining Of Plastics Or The Like (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model provides a serial connection combined plastic piston, which comprises a rod body (1), an upper sheet body (2) and a lower sheet body (3) and has the technical scheme that the plastic piston is decomposed into the rod body, the upper sheet body and the lower sheet body, the upper sheet body and the lower sheet body are respectively formed through injection molding, then, the rod body, the upper sheet body and the lower sheet body are connected in series and combined, and the upper sheet body and the lower sheet body are welded and formed into a whole through ultrasonic waves. Problems and defects of high cost, low efficiency and short service life in the prior art are respectively solved and overcome, the serial connection combined plastic piston is provided, the upper sheet body and the lower sheet body can be respectively formed through axial demolding injection molding, and the generation of the vertical parting line and the twisting deformation is avoided, so the dimension precision is high, the ultrasonic wave welding cost is low, the ultrasonic wave welding efficiency is high, the high-cost and low-efficiency secondary precise cutting processing is avoided in the plastic piston production process, and goals of reducing the cost, improving the efficiency and prolonging the service life of the piston are reached.
Description
Technical field
The utility model relates to a kind of piston element of hand oil pump, specifically is meant the plastic piston of a kind of series combination that is used for diesel car diesel-oil filter hand oil pump.
Background technique
The piston element of the diesel-oil filter hand oil pump of prior art diesel car is to be processed into through precision cutting by aluminum alloy material, and its material and processing cost are all higher; Adopt the plastic piston of oil resistant plastics integral molded plastic moulding, existence by injection mould matched moulds somatotype form along the piston goods problem of joint line and torsional deformation longitudinally, and mould is along with the increase of access times, somatotype parts such as slide block are prone to phenomenons such as mould shift, wearing and tearing, above reason causes the piston size precision not high, and behind the fitting tight part, Sealing is not tight with combining of plastic piston joint line, poor sealing and have the possibility of leakage is so use unreliable and the life-span is shorter; If plastic piston is carried out secondary precision cutting processing, the precision cutting cost of processing is higher and efficient is low, therefore, and the problems and shortcomings that there is the cost height in prior art, efficient is low and working life is short.
Summary of the invention
Problems and shortcomings at above-mentioned prior art existence, the utility model adopts plastic piston is resolved into the body of rod, upper sheet, lower sheet, with upper sheet and lower sheet molding and forming respectively, again with the body of rod, upper sheet, the lower sheet series combination, through ultrasound is the technological scheme of one with upper sheet and lower sheet welding fabrication, a kind of plastic piston of series combination is provided, be intended to utilize upper sheet, lower sheet all can be taked axial demoulding molding and forming and avoid producing vertical joint line and torsional deformation, so dimensional accuracy height, the ultrasonic welding cost is inefficient high, make the production of plastic piston exempt the secondary precision cutting processing of expensive poor efficiency, reach and reduce cost, raise the efficiency, prolong the piston purpose in working life.
The purpose of this utility model is achieved in that a kind of plastic piston of series combination, comprise the body of rod, upper sheet, lower sheet, wherein: the described body of rod is that the lower end is provided with flange cap head, and the upper end is provided with the cylindrical shaft-like aluminium alloy element of step of flat tenon and central blind hole;
Described upper sheet is the nylon injection-molding member of oblate cylindricality, the center of upper sheet is provided with and is used for the up-small and down-big step through-hole that cooperates with the flange cap head and the cylindrical bar of the described body of rod, the top of upper sheet is the plane, and upper sheet following is provided with at the proximal edge place and is used for the annular groove that cooperates with the annular convex rib of described lower sheet;
Described lower sheet is the nylon injection-molding member of oblate post stepped shape, and the outer rim post jamb of lower sheet is up-small and down-big cylinder stepped shape, is provided with the corresponding annular convex rib that agrees with of annular groove with described upper sheet above the lower sheet; The following center of lower sheet is provided with the loss of weight groove of concentric circle and annular;
The body of rod is upward through the step through-hole of upper sheet, the flange cap head of the body of rod is arranged in the big step in bottom of the step through-hole of upper sheet, the annular convex rib of lower sheet upwards agrees with the annular groove of upper sheet, the flange cap head of the body of rod is clamped between upper sheet and the lower sheet, through ultrasonic welding upper sheet and lower sheet are welded as a whole, and the body of rod can freely rotate around axis.
Beneficial effect
The plastic piston structure of this series combination, can overcome prior art injection-molded plastic piston causes dimensional accuracy not high because of mould split line, the defective of Sealing poor sealing, can be applied to the occasions such as gas, liquid sealing of light, heavy load, as the diesel-oil filter hand oil pump piston of diesel-oil vehicle, the pneumatic piston in each valve of truck braking system; Can also make the multi-disc body by the specific requirement of using, it is the built-up piston of many seal groove structures, or even not equal diameter, do not wait the combined piston of seal groove size, each lamellar body of piston can be by seam, buckle, various ways combination such as bonding, in addition, piston rod and piston also can adopt other multiple Placement assembling.
Above-mentioned, the utility model adopts plastic piston is resolved into the body of rod, upper sheet, lower sheet, with upper sheet and lower sheet molding and forming respectively, again with the body of rod, upper sheet, the lower sheet series combination, through ultrasound is the technological scheme of one with upper sheet and lower sheet welding fabrication, overcome prior art and had the cost height, the problems and shortcomings that efficient is low and working life is short, the plastic piston of a kind of series combination that is provided, utilize upper sheet, lower sheet all can be taked axial demoulding molding and forming and avoid producing vertical joint line and torsional deformation, so dimensional accuracy height, the ultrasonic welding cost is inefficient high, make the production of plastic piston exempt the secondary precision cutting processing of expensive poor efficiency, reached and reduced cost, raise the efficiency, prolong the piston purpose in working life.
Description of drawings
Fig. 1 is the structure cross-sectional schematic of the plastic piston of a kind of series combination of the present utility model;
Fig. 2 is that the axis of no-feathering of the plastic piston of a kind of series combination of the present utility model is surveyed schematic representation;
Fig. 3 is that each parts axle of the plastic piston of a kind of series combination of the present utility model is surveyed decomposing schematic representation.
Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but should not be construed as any restriction of the present utility model.
Among the figure: the body of rod 1, upper sheet 2, lower sheet 3.
Embodiment
Consult Fig. 1～Fig. 3, the plastic piston of a kind of series combination of the present utility model, comprise the body of rod 1, upper sheet 2, lower sheet 3, wherein: the described body of rod 1 is provided with flange cap head for the lower end, and the upper end is provided with the cylindrical shaft-like aluminium alloy element of step of flat tenon and central blind hole;
Described upper sheet 2 is the nylon injection-molding member of oblate cylindricality, the center of upper sheet 2 is provided with and is used for the up-small and down-big step through-hole that cooperates with the flange cap head and the cylindrical bar of the described body of rod 1, the top of upper sheet 2 is the plane, and upper sheet 2 following is provided with at the proximal edge place and is used for the annular groove that cooperates with the annular convex rib of described lower sheet 3;
Described lower sheet 3 is the nylon injection-molding member of oblate post stepped shape, and the outer rim post jamb of lower sheet 3 is up-small and down-big cylinder stepped shape, is provided with the corresponding annular convex rib that agrees with of annular groove with described upper sheet 2 above the lower sheet 3; The following center of lower sheet 3 is provided with the loss of weight groove of concentric circle and annular;
The body of rod 1 is upward through the step through-hole of upper sheet 2, the flange cap head of the body of rod 1 is arranged in the big step in bottom of the step through-hole of upper sheet 2, the annular convex rib of lower sheet 3 upwards agrees with the annular groove of upper sheet 2, the flange cap head of the body of rod 1 is clamped between upper sheet 2 and the lower sheet 3, through ultrasonic welding upper sheet 2 and lower sheet 3 are welded as a whole, and the body of rod 1 can freely rotate around axis.
Claims (1)
1. the plastic piston of a series combination, it is characterized in that: comprise the body of rod (1), upper sheet (2), lower sheet (3), the described body of rod (1) is provided with flange cap head for the lower end, and the upper end is provided with the cylindrical shaft-like aluminium alloy element of step of flat tenon and central blind hole;
Described upper sheet (2) is the nylon injection-molding member of oblate cylindricality, the center of upper sheet (2) is provided with and is used for the up-small and down-big step through-hole that cooperates with the flange cap head and the cylindrical bar of the described body of rod (1), the top of upper sheet (2) is the plane, and upper sheet (2) following is provided with at the proximal edge place and is used for the annular groove that cooperates with the annular convex rib of described lower sheet (3);
Described lower sheet (3) is the nylon injection-molding member of oblate post stepped shape, and the outer rim post jamb of lower sheet (3) is up-small and down-big cylinder stepped shape, is provided with the corresponding annular convex rib that agrees with of annular groove with described upper sheet (2) above the lower sheet (3); The following center of lower sheet (3) is provided with the loss of weight groove of concentric circle and annular;
The body of rod (1) is upward through the step through-hole of upper sheet (2), the flange cap head of the body of rod (1) is arranged in the big step in bottom of the step through-hole of upper sheet (2), the annular convex rib of lower sheet (3) upwards agrees with the annular groove of upper sheet (2), the flange cap head of the body of rod (1) is clamped between upper sheet (2) and the lower sheet (3), through ultrasonic welding upper sheet (2) and lower sheet (3) are welded as a whole, and the body of rod (1) can freely rotate around axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200550145U CN201972919U (en) | 2011-02-25 | 2011-02-25 | Serial connection combined plastic piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200550145U CN201972919U (en) | 2011-02-25 | 2011-02-25 | Serial connection combined plastic piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201972919U true CN201972919U (en) | 2011-09-14 |
Family
ID=44578024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200550145U Expired - Lifetime CN201972919U (en) | 2011-02-25 | 2011-02-25 | Serial connection combined plastic piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201972919U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410207A (en) * | 2011-12-03 | 2012-04-11 | 丁昌炽 | Novel plastic plunger |
| CN103375383A (en) * | 2012-04-27 | 2013-10-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston compressor connection rod assembly and piston compressor with same |
-
2011
- 2011-02-25 CN CN2011200550145U patent/CN201972919U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410207A (en) * | 2011-12-03 | 2012-04-11 | 丁昌炽 | Novel plastic plunger |
| CN103375383A (en) * | 2012-04-27 | 2013-10-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston compressor connection rod assembly and piston compressor with same |
| CN103375383B (en) * | 2012-04-27 | 2015-11-18 | 珠海格力节能环保制冷技术研究中心有限公司 | Piston compressor link assembly and use the piston compressor of this link assembly |
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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: 20110914 |