CN213175856U

CN213175856U - Piston easy for lubricating oil to flow

Info

Publication number: CN213175856U
Application number: CN202021286345.5U
Authority: CN
Inventors: 林炳伟
Original assignee: Zhejiang Zhenkai Piston Manufacturing Co ltd
Current assignee: Zhejiang Zhenkai Piston Manufacturing Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-05-11
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses an easily piston that lubricating oil flows, including piston crown, piston head, piston skirt and pinhole, the inside oil storage chamber that is provided with of piston head, the oil storage chamber with piston head exterior wall runs through there is the oil gallery, the oil storage chamber with it has first oil outlet to run through between the pinhole, the inside of pinhole seted up with the second oil outlet of first oil outlet intercommunication. The utility model discloses in, the piston is at the removal in-process, makes the piston ring scrape get the inside lubricating oil of piston cylinder to make lubricating oil flow the oil storage chamber through the return port, the inside of pinhole is entered into through the oil outlet to the inside lubricating oil of oil storage intracavity portion, when lubricating oil was too much in the pinhole, partly lubricating oil accessible oil outlet returns to in the oil storage chamber, on another part lubricating oil can sputter the interior table wall of piston cylinder, can scrape by the piston ring and get the recycling that gets back to oil storage chamber through the return port and accomplish lubricating oil, reduce the loss of lubricating oil.

Description

Piston easy for lubricating oil to flow

Technical Field

The utility model relates to the technical field of engines, especially, relate to a piston that easily lubricating oil flows.

Background

The piston is a reciprocating element in the cylinder body of the automobile engine. The basic structure of the piston can be divided into a crown, a crown and a skirt. The piston crown is the main part that makes up the combustion chamber and its shape is related to the combustion chamber form chosen. The gasoline engine mostly adopts a flat-top piston, and has the advantage of small heat absorption area. The top of the piston of a diesel engine often has various pits, the specific shape, position and size of which must be adapted to the requirements of the mixture formation and combustion of the diesel engine.

At present, a piston formed by forging and a piston with a face window which cannot be directly formed in the short shaft direction on the market are designed conventionally, and oil return passages such as an oil return face window cannot be formed in the short shaft direction of the piston, so that the oil return passages of the piston mainly return oil by virtue of a small amount of oil return holes (namely an internal oil return mode) in the long shaft direction of the piston. However, the structure has a great disadvantage that the engine oil splashed by the crankcase can be enriched at the top of the inner cavity of the piston to block the long-axis oil return hole, so that an oil return channel is reduced, the oil return of the long-axis oil return hole is blocked, the oil scraped by the oil ring from the cylinder wall is accumulated more and more on the lower side surface of the oil ring, the pressure difference between the upper side and the lower side of the oil ring is changed, the engine oil is splashed upwards, and the engine oil consumption is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the above problems, a piston that facilitates the flow of lubricating oil has been proposed.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an easy piston that lubricating oil flows, includes piston crown, piston head, skirt and pinhole, the inside oil storage chamber that is provided with of piston head, the oil storage chamber with piston head exterior wall runs through there is the oil gallery, the oil storage chamber with it has first oil outlet to run through between the pinhole, the inside of pinhole seted up with the second oil outlet of first oil outlet intercommunication.

As a further description of the above technical solution:

the oil return holes are of a columnar structure, and at least two oil return holes are formed in the surface of the piston head at equal intervals.

As a further description of the above technical solution:

the first oil outlet hole and the second oil outlet hole are provided with two groups and are respectively positioned on two axial sides of the pin hole.

As a further description of the above technical solution:

the oil storage cavity is of an annular structure.

As a further description of the above technical solution:

and a piston ring is sleeved on the surface of the piston head.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, because the setting of oil storage chamber and oil gallery, the piston makes the piston ring scrape the inside lubricating oil of getting the piston cylinder at the removal in-process to make lubricating oil flow to the inside collection in oil storage chamber through the oil gallery, increase the convenience that lubricating oil stored, avoid the pressure increase of piston surface simultaneously, avoid the outside lubricating oil of piston to take place to scurry, reduce the loss of lubricating oil.

2. The utility model discloses in, the piston is at the in-process that removes, and the inside lubricating oil of oil storage intracavity portion enters into the inside of pinhole through first oil outlet and second oil outlet, if lubricating oil was too much in the pinhole simultaneously, the first oil outlet of partly lubricating oil accessible and second oil outlet return to in the oil storage chamber, and another part lubricating oil can be along with the motion of piston pin sputter the interior table wall of piston cylinder on, can scrape by the piston ring and get through the oil gallery and get back to the used circulation that oil storage chamber accomplished lubricating oil.

3. The utility model discloses in, oil storage chamber and oil outlet all set up inside the piston body, are favorable to practicing thrift and make full use of piston inner chamber's structural space, reduce the high height of piston compression, for reducing the piston height, reduce piston weight, reduce power consumption and create the condition.

Drawings

Fig. 1 shows a schematic cross-sectional view of an overall structure provided according to an embodiment of the present invention;

fig. 2 shows a schematic sectional structure view of a-a plane provided according to an embodiment of the present invention;

fig. 3 shows a schematic cross-sectional structural diagram of a plane B-B provided in accordance with an embodiment of the present invention.

Illustration of the drawings:

1. a piston top; 2. a piston head; 3. a piston skirt; 4. an oil storage chamber; 5. an oil return hole; 6. a first oil outlet hole; 7. a second oil outlet hole; 8. a pin hole; 9. a piston ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a piston easy for lubricating oil to flow comprises a piston top 1, a piston head 2, a piston skirt 3 and a pin hole 8, wherein an oil storage cavity 4 is arranged inside the piston head 2, an oil return hole 5 penetrates through the oil storage cavity 4 and the outer surface wall of the piston head 2, a first oil outlet hole 6 penetrates between the oil storage cavity 4 and the pin hole 8, a second oil outlet hole 7 communicated with the first oil outlet hole 6 is formed inside the pin hole 8, lubricating oil inside the oil storage cavity 4 enters the pin hole 8 through the first oil outlet hole 6 and the second oil outlet hole 7 in the moving process of the piston, meanwhile, if the lubricating oil in the pin hole 8 is excessive, part of the lubricating oil can return to the oil storage cavity 4 through the first oil outlet hole 6 and the second oil outlet hole 7, the other part of the lubricating oil can be sputtered onto the inner surface wall of a piston cylinder along with the movement of the piston pin, and can be scraped by the oil return hole 9 to the oil storage cavity 4 through the oil return hole, the loss of lubricating oil is reduced.

Specifically, as shown in fig. 1, fig. 2 and fig. 3, oil gallery 5 is the columnar structure, and the equidistant surface of seting up at piston head 2 of oil gallery 5 that is provided with at least two, first oil outlet 6 and second oil outlet 7 are equipped with two sets ofly, be located 8 axial both sides of pinhole respectively, oil storage chamber 4 is the loop configuration, oil storage chamber 4, first oil outlet 6 and second oil outlet 7 all set up inside the piston body, be favorable to practicing thrift and make full use of piston cavity's structural space, reduce the high height of piston compression, for reducing the piston height, reduce piston weight, reduce power consumption and create the condition.

Specifically, as shown in fig. 1, piston ring 9 has been cup jointed on the surface of piston head 2, because the setting of oil storage chamber 4 and oil gallery 5, the piston makes piston ring 9 scrape the inside lubricating oil of piston cylinder at the removal in-process to make lubricating oil flow to the inside collection of oil storage chamber 4 through oil gallery 5, increase the convenience that lubricating oil stored.

The working principle is as follows: the piston can make the piston ring 9 scrape get the inside lubricating oil of piston cylinder in the removal in-process to make lubricating oil flow to the inside of oil storage chamber 4 through oil gallery 5 and collect, simultaneously the piston is in the in-process that removes, the inside lubricating oil of oil storage chamber 4 enters into the inside of pinhole 8 through first oil outlet 6 and second oil outlet 7, if the lubricating oil was too much in the pinhole 8 simultaneously, partly lubricating oil accessible first oil outlet 6 and second oil outlet 7 return to in the oil storage chamber 4, another part lubricating oil can be along with the motion of piston pin sputter on the interior table wall of piston cylinder, then can scrape by the piston ring 9 and get and return to oil storage chamber 4 through oil gallery 5, accomplish the recycling of lubricating oil.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an easy piston that lubricating oil flows, includes piston crown (1), piston head (2), piston skirt (3) and pinhole (8), its characterized in that, piston head (2) inside is provided with oil storage chamber (4), oil storage chamber (4) with piston head (2) outward appearance wall runs through there is oil gallery (5), oil storage chamber (4) with it has first oil outlet (6) to run through between pinhole (8), the inside of pinhole (8 seted up with second oil outlet (7) of first oil outlet (6) intercommunication.

2. Piston susceptible to the flow of lubricating oil according to claim 1, characterized in that said oil return holes (5) are of cylindrical configuration and that at least two of said oil return holes (5) are provided equally spaced on the surface of said piston head (2).

3. The piston facilitating the flow of lubricating oil according to claim 1, wherein the first oil outlet hole (6) and the second oil outlet hole (7) are provided in two sets, one on each axial side of the pin hole (8).

4. Piston susceptible to the flow of lubricating oil according to claim 1, characterised in that the oil reservoir (4) is of annular configuration.

5. A lubricant flow facilitating piston according to claim 1, characterised in that the piston ring (9) is sleeved on the surface of the piston head (2).