CN201908802U - Piston component of portable air pump - Google Patents
Piston component of portable air pump Download PDFInfo
- Publication number
- CN201908802U CN201908802U CN2010206853109U CN201020685310U CN201908802U CN 201908802 U CN201908802 U CN 201908802U CN 2010206853109 U CN2010206853109 U CN 2010206853109U CN 201020685310 U CN201020685310 U CN 201020685310U CN 201908802 U CN201908802 U CN 201908802U
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- CN
- China
- Prior art keywords
- piston ring
- piston
- ring groove
- air pump
- portable air
- 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 - Fee Related
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Abstract
The utility model discloses a piston component of a portable air pump. The piston component comprises a piston, a piston connecting rod and a piston ring, wherein the piston connecting rod is integrally molded with the piston; a piston ring groove is formed around the side surface of the piston along the circumferential direction; the piston ring is embedded in the piston ring groove; the width of the piston ring groove is larger than the thickness of the piston ring; the piston ring can move upwards and downwards relative to the piston ring groove; an air slide which depresses from the bottom surface of the piston ring groove to an inner side and finally extends to the air compression end face of the piston is formed at a local position of the piston ring groove, and is communicated with a cylinder body; the air slide is formed in a step shape; and the width of the piston ring groove is 1.4-2.5 times of the thickness of the piston ring. The width of the piston ring groove is larger than the thickness of the piston ring by a certain value, the piston ring moves upwards and downwards between the upper side face and the lower side face of the piston ring groove along the axial direction of the piston, and the air slide is formed at the local position of the piston ring groove, so that air current flows from the piston ring groove into a cylinder in the air inlet process of the air pump, the reliability of a product is effectively enhanced, and the product cost is lowered.
Description
Technical field
The utility model relates to the portable air pump that a kind of dilly uses, particularly a kind of piston assembly of portable air pump.
Background technique
The piston assembly that the portable air pump of the middle-size and small-size vehicle use of prior art at present adopts comprises piston, piston ring and piston rod, wherein be connected by one-body molded in order to save cost between piston and the piston rod, the piston side surface is arranged with piston ring groove along circumferential hoop, piston ring is embedded in the piston ring groove, in addition, the end face of calming the anger of piston also is provided with the inlet hole of perforation, the piston gas-pressing end face is provided with the valve block of the unidirectional air inlet of control inlet hole, and valve block is fastenedly connected by screw and piston gas-pressing end face; The shortcoming of this structure is that piston intake valve block air-breathing, exhaust process at air pump when work needs resiliently deformable repeatedly, not only influence reliability of products, and, also need to increase tight assembly process to the requirement height of material, increase the cost of product.
The model utility content
The utility model is in order to overcome defective in the above-mentioned prior art, be set to greater than piston ring thickness certain value by the piston ring groove width, and the airslide of perforation is set between piston ring groove bottom surface and piston gas-pressing end face, be implemented in the air pump intake process air-flow and between piston ring groove downside and piston ring lower end surface, flow into cylinder, improve product reliability and reduce product cost through airslide.
The piston assembly of a kind of portable air pump of the present utility model, comprise piston, with integrated piston rod of piston and piston ring, the piston side surface is arranged with piston ring groove along circumferential hoop, piston ring is embedded in the piston ring groove, the width of piston ring groove is greater than the thickness of piston ring, piston ring piston ring groove relatively moves up and down, and the local location of piston ring groove is provided with the airslide that caves in to the inside from the piston ring groove bottom surface and finally extend to the piston gas-pressing end face, and airslide is connected with cylinder block.
Preferably, the width of piston ring groove is 1.4 to 2.5 times of piston ring thickness.
Preferably, the airslide trend is for stepped.
Preferably, the outer rim of piston ring is connected with the slipper seal of cylinder inside wall; Under the cylinder intake state, piston ring is connected to the upper side wall of piston ring groove, and the space of air-flow between piston ring lower end surface and piston ring groove lower wall enters described airslide and then flow in the cylinder block; Under the cylinder compressive state, piston ring is connected to the lower wall of piston ring groove, and the gas in the cylinder is isolated from the outside.
Preferably, airslide can circumferentially evenly be provided with at interval along piston; Airslide quantity can be four.
Compared with prior art, the utlity model has following beneficial effect:
Be set to greater than piston ring thickness certain value by the piston ring groove width, and piston ring is moved axially between the upper and lower side of piston ring groove along piston, and airslide is set at the local location of piston ring groove, be implemented in that air-flow flows into cylinder from piston ring groove in the air pump intake process, can effectively improve product reliability and reduce product cost.
Description of drawings
Fig. 1 is the exploded perspective view of the portable air pump piston assembly of the utility model;
Fig. 2 is that A-A after Fig. 1 assembles is to sectional view;
Fig. 3 is the work schematic representation of the portable air pump piston assembly of the utility model.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-piston, 11-piston ring groove, 12-airslide, 2-piston ring, 3-piston rod, 4-suction port, 5-cylinder block.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.
As shown in Figure 1 to Figure 3, the piston assembly of portable air pump of the present utility model, comprise piston 1, with integrated piston rod 3 of piston and piston ring 2, the side surface of piston 1 is arranged with piston ring groove 11 along circumferential hoop, piston ring 2 is embedded in the piston ring groove 11, the width of piston ring groove is greater than the thickness of piston ring, and the width of piston ring groove is 1.4 to 2.5 times of piston ring thickness, like this piston ring 2 relatively piston ring groove 11 move up and down.Piston ring groove 11 circumferentially evenly is interval with four airslides 12 along piston, and airslide 12 extends to piston gas-pressing end face (being the end face of piston area to cylinder block 5) to the inside and finally from piston ring groove 11 bottom surfaces, and airslide 12 is connected with cylinder block 5.As shown in Figure 1, 2, the trend of this airslide 12 is stepped.
Further as shown in Figure 3, after piston assembly was installed, the outer rim of piston ring 2 was connected with the slipper seal of cylinder inside wall.Under the cylinder intake state, piston 1 and piston rod 3 axially move down along cylinder block 5, the piston ring 2 that embeds in the piston ring groove 11 moves on relative piston ring groove 11 at the rubbing action lower edge of cylinder block madial wall piston shaft, make piston ring 2 be connected to the upper side wall of piston ring groove 11, enter airslide 12 and then flow in the cylinder block 5 this moment from the space of air-flow between piston ring 2 lower end surfaces and piston ring groove 11 lower wall that suction port 4 enters; Charging stage finishes under the cylinder compressive state, piston upwards moves along cylinder axis, piston ring 2 moves down to relative piston ring groove 11 at the rubbing action lower edge of cylinder block madial wall piston shaft, piston ring 2 is connected to the lower wall of piston ring groove 11 and fits tightly, and makes that the gas in the cylinder block 5 is isolated from the outside.
The utility model is set to greater than piston ring thickness certain value by the piston ring groove width, and piston ring is moved axially between the upper and lower side of piston ring groove along piston, and airslide is set at the local location of piston ring groove, be implemented in that air-flow flows into cylinder from piston ring groove in the air pump intake process, can effectively improve product reliability and reduce product cost.
More than disclosed only be a specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.
Claims (6)
1. the piston assembly of a portable air pump, comprise piston, with integrated piston rod of piston and piston ring, the piston side surface is arranged with piston ring groove along circumferential hoop, piston ring is embedded in the piston ring groove, it is characterized in that, the width of described piston ring groove is greater than the thickness of piston ring, piston ring piston ring groove relatively moves up and down, the local location of piston ring groove is provided with the airslide that caves in to the inside from the piston ring groove bottom surface and finally extend to the piston gas-pressing end face, and described airslide is connected with cylinder block.
2. the piston assembly of portable air pump according to claim 1 is characterized in that, the width of described piston ring groove is 1.4 to 2.5 times of piston ring thickness.
3. the piston assembly of portable air pump according to claim 1 and 2 is characterized in that, described airslide trend is for stepped.
4. the piston assembly of portable air pump according to claim 1 and 2 is characterized in that, the outer rim of described piston ring is connected with the slipper seal of cylinder inside wall; Under the cylinder intake state, piston ring is connected to the upper side wall of piston ring groove, and the space of air-flow between piston ring lower end surface and piston ring groove lower wall enters described airslide and then flow in the cylinder block; Under the cylinder compressive state, piston ring is connected to the lower wall of piston ring groove, and the gas in the cylinder is isolated from the outside.
5. the piston assembly of portable air pump according to claim 1 and 2 is characterized in that, described airslide circumferentially evenly is provided with at interval along piston.
6. the piston assembly of portable air pump according to claim 5 is characterized in that, described airslide quantity is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206853109U CN201908802U (en) | 2010-12-23 | 2010-12-23 | Piston component of portable air pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206853109U CN201908802U (en) | 2010-12-23 | 2010-12-23 | Piston component of portable air pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201908802U true CN201908802U (en) | 2011-07-27 |
Family
ID=44301005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206853109U Expired - Fee Related CN201908802U (en) | 2010-12-23 | 2010-12-23 | Piston component of portable air pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201908802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086854A (en) * | 2010-12-23 | 2011-06-08 | 宁波五马实业有限公司 | Piston component of portable air pump |
-
2010
- 2010-12-23 CN CN2010206853109U patent/CN201908802U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086854A (en) * | 2010-12-23 | 2011-06-08 | 宁波五马实业有限公司 | Piston component of portable air pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Wuma Electric Appliance Co., Ltd. Assignor: Ningbo Wuma Industry Co., Ltd. Contract record no.: 2012330000083 Denomination of utility model: Piston component of portable air pump Granted publication date: 20110727 License type: Exclusive License Record date: 20120313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20151223 |
|
| EXPY | Termination of patent right or utility model |