CN205172748U - Lubricating oil access structure between cylinder head hood and cylinder head - Google Patents

Abstract

The utility model discloses a lubricating oil access structure between cylinder head hood and cylinder head, cylinder head hood assembly is in the cylinder head top, and the locating pin be hollow round pin, is equipped with the sealing washer at locating pin upper portion cover, and the sealing washer is adorned in the mounting groove of cylinder head hood bottom surface, and the bottom surface of sealing washer and cylinder head top surface are hugged closely, it has straight oil duct of lubricating oil and the oblique oil duct of lubricating oil to open on the cylinder head, and the lower extreme intercommunication of oil duct upper end and locating pin centre bore is straightened to lubricating oil, and through the intercommunication of the double -screw bolt mounting hole on oblique oil duct of lubricating oil and the cylinder head in the middle part of the straight oil duct of lubricating oil, last the opening of cylinder head hood has the straight oil duct of lubricating oil oblique oil channel and lubricating oil level, and wherein lubricating oil oblique oil channel lower extreme communicates with the upper end of locating pin centre bore, lubricating oil oblique oil channel's the upper end and the one end intercommunication of the straight oil duct of lubricating oil level. The utility model discloses with locating pin some as the lubricating oil passageway, the structure has just so effectively been simplified to the locating pin overcoat is equipped with the sealing washer, thereby can realize sealedly reliably.

Description

Lubricating oil channel structure between cylinder head cover and cylinder head

technical field

The utility model belongs to the field of motorcycle engines, in particular to a lubricating oil channel structure between a cylinder head cover and a cylinder head.

Background technique

The cylinder head cover and the cylinder head are important parts on the motorcycle engine. It is assembled behind the cylinder head cover, and the rocker arm is located in the cylinder head cover. In order to ensure that the rocker arm and other components are fully and comprehensively lubricated, a lubricating oil injection structure needs to be specially designed. The lubricating oil is delivered from the crankcase through the cylinder block and cylinder head to the cylinder head cover, and sprayed to the rocker arm and other components. At the same time, the lubricating oil channel between the cylinder head cover and the cylinder head needs to be simple in structure and reliable in sealing, so the application of this case is proposed.

Utility model content

The technical problem to be solved by the utility model is to provide a lubricating oil channel structure between the cylinder head cover and the cylinder head with simple structure and reliable sealing.

The technical scheme of the utility model is as follows: a lubricating oil channel structure between the cylinder head cover and the cylinder head, including the cylinder head cover (1) and the cylinder head (2), wherein the cylinder head cover (1) is assembled on the cylinder head ( 2) above, and between the cylinder head cover (1) and the cylinder head (2), there is a positioning pin (3), which is characterized in that: the positioning pin (3) is a hollow pin, and a sealing ring is set on the upper part of the positioning pin (4), the sealing ring is installed in the installation groove on the bottom surface of the cylinder head cover (1), and the bottom surface of the sealing ring (4) is in close contact with the top surface of the cylinder head (2); the cylinder head (2) ) is provided with a lubricating oil straight oil passage (2a) and a lubricating oil inclined oil passage (2b), and the upper end of the lubricating oil straight oil passage communicates with the lower end of the center hole of the positioning pin (3), and the lubricating oil straight oil passage ( 2a) The middle part communicates with the stud mounting hole on the cylinder head (2) through the lubricating oil ramp (2b);

The cylinder head cover (1) is provided with a lubricating oil inclined oil passage (1a) and a lubricating oil horizontal straight oil passage (1b), wherein the lower end of the lubricating oil inclined oil passage (1a) is connected with the central hole of the positioning pin (3). The upper end of the lubricating oil inclined oil passage communicates with one end of the lubricating oil horizontal straight oil passage (1b).

In the above structure, the utility model designs the positioning pin (3) as a hollow pin, so that the central hole of the hollow pin can be borrowed and used as a part of the lubricating oil channel, thereby achieving the present simplification of the structure. Moreover, a sealing ring (4) is sheathed on the outside of the positioning pin (3), so that reliable sealing can be realized again like this, thereby preventing lubricating oil from leaking.

In this case, the sizes of the inclined lubricating oil passage (1a) and the straight lubricating oil passage (2a) are smaller than the diameter of the central hole of the positioning pin (3).

Beneficial effects: the utility model regards the positioning pin as a part of the lubricating oil channel, which effectively simplifies the structure, and the positioning pin is covered with a sealing ring, thereby achieving reliable sealing and preventing the lubricating oil from leaking.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in FIG. 1 , a lubricating oil channel structure between a cylinder head cover and a cylinder head is mainly composed of a cylinder head cover 1 , a cylinder head 2 , a positioning pin 3 and a sealing ring 4 . Wherein, the cylinder head cover 1 is assembled above the cylinder head 2 , and a positioning pin 3 is arranged between the cylinder head cover 1 and the cylinder head 2 . Locating pin 3 is a hollow pin, and sealing ring 4 is sleeved on locating pin 3 tops, and this sealing ring 4 is contained in the mounting groove of cylinder head cover 1 bottom surface, and the bottom surface of sealing ring 4 is close to cylinder head 2 top surfaces.

The cylinder head 2 is provided with a lubricating oil straight oil passage 2a and a lubricating oil inclined oil passage 2b, and the upper end of the lubricating oil straight oil passage communicates with the lower end of the center hole of the positioning pin 3, and the middle part of the lubricating oil straight oil passage 2a passes through the lubricating oil inclined oil passage. The channel 2b communicates with the stud installation hole on the cylinder head 2. The cylinder head cover 1 is provided with a lubricating oil inclined oil passage 1a and a lubricating oil horizontal straight oil passage 1b, wherein the lower end of the lubricating oil inclined oil passage 1a communicates with the upper end of the center hole of the positioning pin 3, and the upper end of the lubricating oil inclined oil passage is connected to the lubricating oil One end of the straight oil channel 1b communicates with the oil level. Four lubricating oil injection holes 1c are provided along the length direction of the lubricating oil level straight oil passage 1b. Moreover, the sizes of the inclined lubricating oil passage 1 a and the straight lubricating oil passage 2 a are smaller than the diameter of the center hole of the positioning pin 3 .

The above descriptions are only preferred embodiments of the present utility model, and are not limited to the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (2)

1. A lubricating oil channel structure between a cylinder head cover and a cylinder head, comprising a cylinder head cover (1) and a cylinder head (2), wherein the cylinder head cover (1) is assembled above the cylinder head (2), and the cylinder A positioning pin (3) is arranged between the head cover (1) and the cylinder head (2), and the feature is that the positioning pin (3) is a hollow pin, and a sealing ring (4) is set on the upper part of the positioning pin. The ring is installed in the installation groove on the bottom surface of the cylinder head cover (1), and the bottom surface of the sealing ring (4) is in close contact with the top surface of the cylinder head (2); the cylinder head (2) is provided with lubricating oil Straight oil passage (2a) and lubricating oil inclined oil passage (2b), and the upper end of the lubricating oil straight oil passage communicates with the lower end of the center hole of the positioning pin (3), and the middle part of the lubricating oil straight oil passage (2a) passes through the The lubricating oil inclined oil channel (2b) communicates with the stud mounting hole on the cylinder head (2); The cylinder head cover (1) is provided with a lubricating oil inclined oil passage (1a) and a lubricating oil horizontal straight oil passage (1b), wherein the lower end of the lubricating oil inclined oil passage (1a) is connected with the central hole of the positioning pin (3). The upper end of the lubricating oil inclined oil passage communicates with one end of the lubricating oil horizontal straight oil passage (1b). 2. The lubricating oil passage structure between the cylinder head cover and the cylinder head according to claim 1, characterized in that: the sizes of the inclined lubricating oil passage (1a) and the straight lubricating oil passage (2a) are smaller than The diameter of the center hole of the positioning pin (3).