Motorcycle engine piston
By designing the drainage groove and communication groove structure of the oil groove and pin seat on the motorcycle engine piston, the problem of lubricating oil being difficult to enter the pin shaft and pin hole is solved, and a better lubrication effect is achieved.
Patent Information
- Application Number
- CN202421095868.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-20
AI Technical Summary
In the cylinders of existing motorcycle engines, the thickness of the pin shaft and the pin hole contact part makes it difficult for lubricating oil to enter, affecting the lubricating effect.
Oil grooves are designed on both sides of the piston body, and drainage grooves and communication grooves are opened on the outer wall of the pin seat. The communication grooves are connected to the drainage grooves, and multiple communication holes are evenly distributed in the drainage grooves and communication grooves, forming an inverted L-shaped drainage grooves for Lubricating oil better enters the connection part between the pin and the pin seat.
Through the design of the drainage groove and the communication groove, the lubricating oil can fully enter the pin and pin seats, improving the lubricating effect and enhancing the lubricating performance between the pin and pin hole.
Smart Images
Figure CN222184945U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motorcycle engine parts, in particular to a motorcycle engine piston. Background Art
[0002] The motorcycle engine piston is mainly composed of a piston head at the upper part, a piston side skirt at the lower part and a piston pin hole at the middle part of the piston side skirt. The piston is placed in the cylinder body and connected to the connecting rod at the lower end through a piston pin. Under the explosion pressure of the gas in the combustion chamber, the piston moves up and down along the cylinder and transmits power to the crankshaft through the connecting rod.
[0003] At present, in order to ensure the lubrication of the pin hole and the pin shaft, an oil groove is set on the piston skirt of the motorcycle engine cylinder to collect lubricating oil and lubricate the pin shaft and the pin hole. However, the existing cylinder pin shaft is inserted into the pin hole, and the contact part between the pin shaft and the pin hole has thickness. The lubricating oil gathered in the oil groove is difficult to enter the inner side of the connection part between the pin shaft and the pin hole through the gap, which affects the lubrication effect between the pin shaft and the pin hole. Utility Model Content
[0004] The utility model aims to provide a motorcycle engine piston to solve the problem in the above background technology that the existing cylinder pin shaft is inserted into the pin hole, the contact part between the pin shaft and the pin hole has thickness, and the lubricating oil gathered in the oil groove is difficult to enter the inner side of the connection part between the pin shaft and the pin hole through the gap, thereby affecting the lubrication effect between the pin shaft and the pin hole.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: including a piston body and an oil groove; pin seats are arranged on both sides of the piston body, the oil grooves are opened on both sides of the piston body and are respectively distributed in the two pin seat positions, drainage grooves are opened on both sides of the outer wall of the pin seat, a connecting groove is opened inside the pin seat, the connecting groove is connected with the drainage groove, a plurality of connecting holes are opened inside the pin seat, and the plurality of connecting holes are evenly distributed inside the drainage groove and the connecting groove.
[0006] Preferably, the drainage groove is in an inverted L-shape, and the lower end of the drainage groove forms a gathering cavity.
[0007] Preferably, two gas ring grooves are provided above the outer wall of the piston body, and an oil ring groove is provided on the outer wall of the piston body, and the oil ring groove is located above the oil groove.
[0008] Preferably, the edge height of the drainage groove reaches the middle part of the connecting hole.
[0009] Compared with the prior art, the utility model has the following beneficial effects: when the lubricating oil enters the oil tank, the lubricating oil enters the drainage groove opened on the outer wall of the pin shaft seat, and the lubricating oil is added to the connecting part of the pin shaft and the pin shaft seat through the connecting holes distributed in the drainage groove. At the same time, the connecting groove is connected to the drainage groove, and the lubricating oil enters the connecting groove, and the lubricating oil is added to the deep part of the pin shaft seat through the distributed connecting holes. The lubricating oil can be fully added to the pin shaft and the pin shaft seat to improve the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a schematic diagram of the structure of the utility model;
[0011] Figure 2 This is a schematic diagram of the front cross-sectional structure of the utility model;
[0012] Figure 3 This is a schematic diagram of the top view of the pin shaft seat of the utility model;
[0013] Figure 4 This is a schematic diagram of the cross-sectional structure of the pin seat of the utility model;
[0014] Figure 5 For this utility model Figure 1 Schematic diagram of the enlarged structure of A in .
[0015] In the figure: 1. Piston body; 2. Gas ring groove; 3. Oil ring groove; 4. Oil groove; 5. Pin seat; 6. Drainage groove; 7. Connecting groove; 8. Connecting hole. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0017] Example
[0018] See also Figure 1-5 , as shown in the figure: This embodiment is a preferred implementation scheme in the present technical solution, a motorcycle engine piston, comprising a piston body 1 and an oil groove 4; pin seats 5 are arranged on both sides of the piston body 1, the oil grooves 4 are arranged on both sides of the piston body 1, and are respectively distributed in the two pin seats 5, drainage grooves 6 are arranged on both sides of the outer wall of the pin seat 5, a connecting groove 7 is arranged inside the pin seat 5, the connecting groove 7 is connected with the drainage groove 6, a plurality of connecting holes 8 are arranged inside the pin seat 5, and the plurality of connecting holes 8 are evenly distributed inside the drainage groove 6 and the connecting groove 7.
[0019] like Figure 1 , 4 As shown, the drainage groove 6 is an inverted L-shape, and a gathering cavity is formed at the lower end of the drainage groove 6. Through the shape of the drainage groove 6, the drainage groove 6 forms a concave gathering cavity, which can slow down the outflow of the lubricating oil from the drainage groove 6, so that the lubricating oil can better enter the connecting groove 7 and the connecting hole 8.
[0020] like Figure 1 , 2 As shown, two air ring grooves 2 are opened on the outer wall of the piston body 1, and an oil ring groove 3 is opened on the outer wall of the piston body 1. The oil ring groove 3 is located above the oil groove 4. The air ring groove 2 opened on the outer wall of the piston body 1 is used to install the air ring, and the oil ring groove 3 opened on the outer wall of the piston body 1 is used to install the oil ring.
[0021] like Figure 2 , 3 As shown, the edge height of the drainage groove 6 reaches the middle part of the connecting hole 8, and the height of the raised part of the drainage groove 6 reaches the middle part of the connecting hole 8, so that the lubricating oil can better enter the connecting hole 8 and add lubricating oil to the deep part of the pin shaft seat 5.
[0022] In this embodiment, firstly, all parts are installed. When the piston body 1 rises to the highest height and moves downward, the lubricating oil on the inner wall of the cylinder is scraped off and gathered into the oil groove 4 through the oil ring on the oil ring groove 3 of the piston body 1. The lubricating oil in the oil groove 4 enters the drainage groove 6 opened on the outer wall of the pin shaft seat 5. The lubricating oil is added to the connection part between the pin shaft and the pin shaft seat 5 through the connecting holes 8 distributed in the drainage groove 6. At the same time, the connecting groove 7 opened in the pin shaft seat 5 is connected with the drainage groove 6. The lubricating oil enters the connecting groove 7 and adds the lubricating oil to the deep part of the pin shaft seat 5 through the distributed connecting holes 8. The lubricating oil can be fully added to the pin shaft and the pin shaft seat 5.
[0023] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make some simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.
Claims
1. A motorcycle engine piston, comprising a piston body (1) and an oil groove (4); characterized in that: The piston body (1) is provided with a pin seat (5) on both sides, the oil groove (4) is provided on both sides of the piston body (1) and is respectively distributed at the two pin seats (5), the outer wall of the pin seat (5) is provided with a drainage groove (6) on both sides, the pin seat (5) is provided with a connecting groove (7) inside, the connecting groove (7) is connected with the drainage groove (6), the pin seat (5) is provided with a plurality of connecting holes (8), and the plurality of connecting holes (8) are evenly distributed inside the drainage groove (6) and the connecting groove (7).
2. A motorcycle engine piston according to claim 1, characterized in that: The drainage groove (6) is in an inverted L-shape, and the lower end of the drainage groove (6) forms a gathering cavity.
3. A motorcycle engine piston according to claim 1, characterized in that: Two gas ring grooves (2) are provided on the upper side of the outer wall of the piston body (1), and an oil ring groove (3) is provided on the outer wall of the piston body (1), wherein the oil ring groove (3) is located above the oil groove (4).
4. A motorcycle engine piston according to claim 1, characterized in that: The height of the edge of the drainage groove (6) reaches the middle of the connecting hole (8).