CN201635957U - Piston of combined air compressor - Google Patents
Piston of combined air compressor Download PDFInfo
- Publication number
- CN201635957U CN201635957U CN2010201098593U CN201020109859U CN201635957U CN 201635957 U CN201635957 U CN 201635957U CN 2010201098593 U CN2010201098593 U CN 2010201098593U CN 201020109859 U CN201020109859 U CN 201020109859U CN 201635957 U CN201635957 U CN 201635957U
- Authority
- CN
- China
- Prior art keywords
- piston
- cover plate
- air compressor
- fastening piece
- piston cover
- 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
Disclosed is a piston of a combined air compressor. The piston comprises a piston body and a piston cover. The piston cover is fastened and connected onto the piston body by a fastener. A sealing ring or a sealing leather bowl is assembled between the piston cover and the piston body. The utility model is characterized in that the fastening position of the fastener is offset relatively to the axial line of the piston to form the offset quantity as the moment arm of the anti-loosening moment for preventing the piston cover from loosening and rotating. Therefore, the piston of the combined air compressor can effectively prevent the piston cover from loosening and rotating.
Description
Technical field
The utility model belongs to the air compressor technical field, relates in particular to a kind of combination type air compressor piston.
Background technique
Current, in non-lubricated air compressor, extensively adopt the groupware type piston, that is piston is assembled by piston cover plate and piston only, wherein the piston cover plate is with being tightened on the fastening piece on the piston only, be equipped with seal ring or sealing cup between piston cover plate and piston only, piston only and connecting rod small end are fastenedly connected or are integral production.Yet practice is found, in the prior art piston cover plate with have a defective being connected of piston only, phenomenon that the piston cover plate occurs now and then and get loose that Here it is, trace it to its cause is compressor when work because causes such as friction and vibrations, cause seal ring or sealing cup the additional moment that rotates around piston axis to occur, but the position of fastening piece of the prior art is arranged in the center portion of piston only, and the ability of therefore resisting the commentaries on classics of piston cover plate pine is relatively poor.
The model utility content
The utility model provides a kind of combination type air compressor piston, and purpose is that the pine that effectively prevents the piston cover plate changes.
The purpose of this utility model is such realization: a kind of combination type air compressor piston, comprise piston only and piston cover plate, described piston cover plate uses fastening piece to be fastenedly connected on the piston only, between piston cover plate and piston only, be equipped with seal ring or sealing cup, it is characterized in that the restraint location of described fastening piece is setovered with respect to piston axis.
Above-mentioned fastening piece is screw or bolt or expandable nail or rivet.
Seal ring or sealing cup suffered a side of cylinder side pressure maximum when the restraint location of above-mentioned fastening piece was positioned at compression stroke.
Above-mentioned piston only and piston cover plate are provided with inlet hole, are equipped with breather check valve on the inlet hole of piston cover plate, and described one-way valve is connected on the piston cover plate with described fastening piece.
Obviously, the utility model adopts the fastening piece fastening piston structure of cover plate of setovering, and the Offset that forms constitutes the arm of force of the locking moment that opposing piston cover plate pine changes thus, so can effectively prevent the pine commentaries on classics of piston cover plate.
Description of drawings
Fig. 1 is the generalized section of a kind of combination type air compressor piston of the utility model;
Fig. 2 is the left view of a kind of combination type air compressor piston of the utility model shown in Figure 1;
Fig. 3 is that the axle of a kind of combination type air compressor piston of the utility model is surveyed schematic representation.
Embodiment
With specific embodiment the utility model is further described below, referring to Fig. 1-3:
A kind of combination type air compressor piston, comprise piston only 1 and piston cover plate 2, described piston cover plate 2 uses fastening piece 3 to be fastenedly connected on the piston only 1, thereby be combined into so-called compressor piston, be equipped with seal ring or sealing cup 4 between piston cover plate 2 and piston only 1, the microcephaly of piston only 1 and connecting rod 5 is fastenedly connected or piston only 1 is integral production with connecting rod 5; When employing was arranged intake duct on piston, described piston only 1 and piston cover plate 2 were provided with inlet hole 6, are equipped with breather check valve 7 on the inlet hole of piston cover plate 2, and the described fastening piece 3 of described one-way valve 7 usefulness is connected on the piston cover plate 2; The restraint location of fastening piece 3 of the present utility model is setovered with respect to piston axis O1, the fastening point of fastening piece 3 has certain eccentric distance apart from piston axis O1 in other words, this eccentric distance has constituted the arm of force of piston cover plate 2 to the locking moment of anti-releasing just, and obviously its existence can prevent effectively that piston cover plate 2 from pine being taken place change; Need to prove, causing piston cover plate 2 to produce pine, to transfer toward the reason of gesture a lot, the impact force of the pressurized gas that is subjected to such as the frictional force that forms between seal ring or sealing cup 4 and the compresser cylinder and side pressure, piston cover plate 2 and reciprocal inertia force, one-way valve 7 bounce vibration etc., certain various stress deformations and thermal distortion also can cause piston cover plate 2 to produce pine to be changeed; It is pointed out that described fastening piece 3 can be screw, bolt, expandable nail or rivet, their pose both can be parallel with piston axis O1 also can be not parallel; In addition, from helping the angle of fit sealing ring or sealing cup 4, the position of described fastening piece 3 preferably is partial to the piston compression stroke piston and is subjected to side pressure one side, and seal ring or sealing cup 4 suffer a side of cylinder side pressure maximum when being arranged in compression stroke in other words; When piston cover plate 2 is provided with one-way valve 7, can suction valve 7 be connected on the piston cover plate 2 by fastening piece 3, can simplify linkage structure like this and increase reliability; It is to be noted, fastening piece 3 both can protrude the installation installation of also can sinking with respect to piston cover plate 2, when it adopts protrusion to install, for fear of at piston stroking upward time collision cylinder head or seat board, can offer corresponding collision avoidance hole on cylinder head or seat board, also can unite two into one collision avoidance hole and exhaust port this moment.
The foregoing description is one of the utility model preferred embodiment only, is not to limit protection domain of the present utility model according to this, so: all equivalences of doing according to structure of the present utility model, shape, principle change, and all should be covered by within the protection domain of the present utility model.
Claims (3)
1. combination type air compressor piston, comprise piston only and piston cover plate, described piston cover plate uses fastening piece to be fastenedly connected on the piston only, be equipped with seal ring or sealing cup between piston cover plate and piston only, it is characterized in that: the restraint location of described fastening piece is setovered with respect to piston axis.
2. a kind of combination type air compressor piston according to claim 1 is characterized in that: described fastening piece is screw or bolt or expandable nail or rivet.
3. a kind of combination type air compressor piston according to claim 1 and 2, it is characterized in that: described piston only and piston cover plate are provided with inlet hole, be equipped with breather check valve on the inlet hole of piston cover plate, described one-way valve is connected on the piston cover plate with described fastening piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201098593U CN201635957U (en) | 2010-02-04 | 2010-02-04 | Piston of combined air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201098593U CN201635957U (en) | 2010-02-04 | 2010-02-04 | Piston of combined air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201635957U true CN201635957U (en) | 2010-11-17 |
Family
ID=43080447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201098593U Expired - Fee Related CN201635957U (en) | 2010-02-04 | 2010-02-04 | Piston of combined air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201635957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696193A (en) * | 2015-02-11 | 2015-06-10 | 合肥通用机械研究院 | Combined piston for air compressor |
-
2010
- 2010-02-04 CN CN2010201098593U patent/CN201635957U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696193A (en) * | 2015-02-11 | 2015-06-10 | 合肥通用机械研究院 | Combined piston for air compressor |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20160204 |