CN2220536Y - Compound piston device - Google Patents

Abstract

The utility model relates to a compound piston device, which is used in air cylinders of various internal-combustion engines, compressors and pump mechanisms. The utility model is provided with a crankshaft, an eccentric block, a connecting rod, a piston, etc., wherein, the eccentric block is arranged on the crankshaft; the connecting rod is combined on a part with smaller mass on the eccentric block; the other end of the connecting rod is connected with the piston to cause the piston to run and act; the piston has a double-piston head; both sides of the piston head are respectively provided with a plurality of piston rings; the piston rings are matched with the compound piston, and the piston rings and the compound piston are supported by each other to keep normal operation in the air cylinder with both short sides of cylinder walls.

Description

Double-piston device

The utility model relates to a kind of double-piston device.

See internal-combustion engine at present, as the cylinder piston of gasoline engine, shown in Fig. 1 and Figure 1A; Its piston A belongs to single head formula structure, and its cooperation is all four continuous strokes runnings such as carrying out air-breathing, compression, blast, exhaust under the cylinder framework of single cylinder wall; Generally speaking, this piston A is placed by several piston rings on it between the cylinder wall B1 of cylinder B and is shuttle motion, move for piston A is remained between the cylinder wall B1 forever, the piston skirt A1 that utilizes the piston periphery to be extended to form contacts, keeps balance with cylinder wall B1; Therefore piston skirt A1 part just can not shorten, reduce, otherwise can't make connecting rod C supporting movement effectively, and piston A can break away from cylinder wall B1 formation deflection improper point, the cylinder wall B1 of cylinder B also can't reduce with the piston skirt A1 length of piston A jointly, causes cylinder B can't break away from the bigger drawback of volume now.Simultaneously, when piston A when moving with connecting rod C only the left side work, its right-hand part is then without any benefit; The time then produce noise in running, length over a long time is apart from contact movement, and piston A must do maintenance and change, and constantly contacts abrasion with cylinder wall B1 must make that thicker size just can bear chronicity, relatively reduces its due stability; Have again, arrange, then certainly will take up room more and can't save the space in case be multiple casing.

The purpose of this utility model is to provide a kind of double-piston device.

The purpose of this utility model is achieved in that promptly provides a kind of double-piston device; It is used for the cylinder on various internal-combustion engines, compressor and the pump mechanism, be provided with a bent axle, eccentric mass, connecting rod, piston etc., its bent axle is located at this eccentric mass, and on the less part of eccentric block quality in conjunction with its connecting rod, connecting rod end rank is in addition established this piston, makes its running action; Wherein this piston is the dual-active chock plug, and respectively there is several piston ring on the piston head both sides, makes it cooperate this compound piston in the cylinder of the bilateral casing wall length of losing heart, and keeps the running of balance normality each other the strong point.

The advantage of double-piston device of the present utility model is that the cylinder wall length that is placed in compound piston shortens, and saves the space, reduces noise during running, reduces abrasion, piston can be made the cylinder of ultra-thin body and shortening, can reach the usefulness of high stability again.

Below in conjunction with accompanying drawing, embodiment of the present utility model is described, wherein:

Fig. 1 is the schematic representation of prior art piston;

Figure 1A is a piston stereogram shown in Figure 1;

Fig. 2 is the stereogram of the utility model piston apparatus;

Fig. 3 A is first operation chart of the utility model piston apparatus;

Fig. 3 B is second operation chart of the utility model piston apparatus;

Fig. 3 C is the 3rd operation chart of the utility model piston apparatus;

Fig. 3 D is the 4th operation chart of the utility model piston apparatus;

Fig. 4 is the local enlarged diagram of the utility model piston apparatus.

At first, see also Fig. 2,3A, 3B, 3C, 3D and shown in Figure 4, double-piston device of the present utility model is used for various internal-combustion engines, compressor, in the cylinder 1 on the pump mechanism, if a bent axle 2, eccentric mass 3, connecting rod 4, piston 5 etc. are established eccentric mass 3 on its bent axle 2, on the eccentric mass 3 less mass fractions in conjunction with its connecting rod 4, and connecting rod 4 in addition the end rank establish this piston 5, the mode operation of four continuous operations such as its air-breathing, compression, blast, exhaust as common four-journey engine; This piston 5 is a dual- active chock plug 51,52, and both sides piston head 51,52 respectively have several piston ring 511,511 ', 511 " and 521,521 ', 521 ", and thinner than general single piston person; In addition, its cylinder wall 11 of ccontaining compound piston 5 also be bilateral 11,11 ', the long distance of its wall is shorter; Like this, when compound piston 5 is contained in the cylinder 1 of the bilateral casing wall 11 of losing heart, form piston head 51,52 running of the phase strong point each other, that is the piston head 51 of left side is when being positioned at its cylinder wall 11 bottoms, then the piston head 52 of right-hand part be positioned at this cylinder wall 11 ', and guarantee that connecting rod 4 can normality move, shown in Fig. 3 A, 3B, 3C, 3D; When any one stroke motion of left side, its relative right-hand part is done the motion in another stroke and is the continuity running, and the therefore interior at one time running that obtains on two strokes obviously reduces cylinder the space is set; Simultaneously, because the cylinder wall 11,11 of ccontaining compound piston 5 piston heads 51,52 ' two- piston head 51,51 each other the strong point supporting movement and no longer the piston skirt A1 of mat prior art as the strong point, cylinder wall 11,11 ' can shorten its cylinder wall length, and piston 5 also can shorten thereupon relatively, so 1 in cylinder is less, thinner, makes mechanism's weight of whole internal-combustion engine or compressor or pump and volume many for alleviating; Moreover because piston head 51,52 and cylinder wall 11,11 ' contact only pass through piston ring 511,511 ', 511 ", 521,521 ', 521 ", as shown in Figure 4; Piston head 51,52 supports the ground motion mutually, thus can balance, contact stably, and it reduces noise in the running, reduces to wear away, and reaches high stability, low noise, low-loss noise operation at high power factor.Improve internal combustion engine, its efficient burning is brought into play fully on power, to reduce the invalid loss of the energy.

Claims (1)

1. A kind of double-piston device; It is used for the cylinder on various internal-combustion engines, compressor and the pump mechanism, be provided with a bent axle, eccentric mass, connecting rod, piston etc., establish this eccentric mass on its bent axle, on the less part of the quality of eccentric mass in conjunction with its connecting rod, connecting rod end rank is in addition established this piston, makes its running action; It is characterized in that: this piston is the dual-active chock plug, and respectively there is several piston ring on the piston head both sides, makes it cooperate this compound piston in the cylinder of the bilateral casing wall length of losing heart, and keeps the normality running each other the strong point.

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