Sectional type composite air inlet pipe

Abstract

The utility model discloses a sectional type composite air inlet pipe which comprises a metal piece and a rubber piece, the rubber piece wraps the metal piece to form a butt joint position and is fixedly connected with the metal piece through a glue joint structure, and a threaded groove is formed in the inner surface of the metal end. According to the air inlet pipe, enough supporting force can be provided for the air throttle body, meanwhile, the strength of the air throttle body is guaranteed, enough sealing performance and shock absorption performance are needed, good air inlet efficiency is achieved, and in addition, the rubber part and the metal part of the air inlet pipe are firmly combined, do not fall off and are safe and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of air intake pipes, in particular to a kind of sectional composite air intake pipe. BACKGROUND

[0002] The main function of motorcycle air intake pipe is to introduce external air for engine use, to ensure that engine obtains sufficient air for combustion. Air intake pipe introduces external air into carburetor or engine intake, finally for engine use. Stable air intake system is essential for maintaining the good performance of motorcycle.

[0003] The sectional air intake pipe of the prior art adopts rubber and metal connection. The sectional connection can increase stability, but the connection mode still has the following problems: the rubber and metal connection is not firm, and the rubber section is prone to fall off due to vibration and pulling caused by vibration during vehicle driving. The combination of rubber section and metal section is uneven due to manufacturing difference, which generates cyclone during air intake, affecting air intake efficiency. Low efficiency of motorcycle air intake pipe may cause insufficient combustion, reduce engine power output, increase engine noise, unstable operation, reduce fuel economy and other problems. Therefore, the structure of motorcycle air intake pipe still needs to be further optimized. SUMMARY

[0004] The utility model aims at providing a sectional composite air intake pipe with better sealing and damping performance and higher air intake efficiency.

[0005] Technical scheme: the sectional composite air intake pipe of the utility model comprises a metal part and a rubber part. The rubber part covers the metal part to form an abutment and is fixedly connected through a glue joint structure. The inner surface of the metal part is provided with a threaded groove. The chaotic airflow entering the air intake pipe is guided into spiral airflow before entering the engine, improving air intake efficiency.

[0006] The outer surface of the metal part at the abutment is provided with a groove.

[0007] The inner surface of the rubber part is provided with a boss. The boss closely matches the groove, increases the glue joint area, and increases the bonding strength of the metal and the rubber.

[0008] The groove is an annular groove or a point-shaped groove arranged in a ring shape.

[0009] The glue joint structure is a glue structure layer connecting the metal part and the rubber part.

[0010] The area of the abutment is 60-80% of the area of the air intake pipe.

[0011] The rubber part is connected with the throttle valve body of the motorcycle through a clamp, and the port of the rubber part is provided with a limiting column for limiting the throttle valve body to fix the rolling direction of the throttle valve body.

[0012] The oil injection nozzle mounting portion of the metal part is provided with a limiting block to prevent the nozzle from rotating.

[0013] Advantages: Compared with the prior art, the segmented composite intake pipe can provide sufficient support force for the throttle valve body, ensure the strength of the segmented composite intake pipe, and also need to have sufficient sealing property and shock absorption property, have good air intake efficiency, and the rubber part and the metal part of the intake pipe are combined firmly and do not fall off, and are safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the utility model;

[0015] Fig. 2 It is a sectional view of the utility model;

[0016] Fig. 3 It is a schematic view of the metal part 2;

[0017] Fig. 4 It is an assembly schematic view of the utility model;

[0018] The rubber part 1, the metal part 2, the threaded groove 3, the groove 4, the limiting column 5, the limiting block 6 and the throttle valve body 7. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model will be further described below with reference to the drawings.

[0020] Example 1

[0021] As shown in the drawings, Figs. 1-4 The segmented composite intake pipe comprises a metal part 2 and a rubber part 1, the rubber part 1 covers the metal part 2 to form an abutting position and is fixedly connected through a glue joint structure, the inner surface of the metal part 2 is provided with a threaded groove 3, and the disordered airflow entering the intake pipe is guided into a spiral airflow to enter the engine, so that the air intake efficiency is effectively improved. The part connected with the engine is a metal part 2, and the part connected with the throttle valve body 7 is a rubber part 1, and the connection mode of the two is glue joint. The metal part 2 provides sufficient support force, and the rubber part 1 has a certain elasticity, and after the clamp is clamped tightly, the rubber part 1 can play a sealing and buffering role. The installation mode of the throttle valve body 7 is changed from bolt connection to clamp connection, and the variation of the rubber is large, so that the segmented composite intake pipe can be applied to multiple models of throttle valve bodies with the same displacement on the market, and the interchangeability is high.

[0022] The outer surface of the metal piece 2 at the joint is provided with a groove 4; the inner surface of the rubber piece 1 is provided with a boss which is tightly matched with the groove 4; the groove 4 is two annular grooves, the boss of the rubber part is clamped into the groove, the bonding area is increased, and the bonding strength of the metal and the rubber is increased. The bonding structure is a glue structure layer connecting the metal piece 2 and the rubber piece 1; the area of the joint is 60% of the area of the air inlet pipe; the rubber piece 1 is connected with the throttle valve body 7 of the motorcycle through a clamp, a limiting column 5 is arranged at the port of the rubber piece 1 and is used for limiting the throttle valve body 7, and the rolling direction of the throttle valve body is fixed. The oil nozzle mounting portion connected with the metal piece 2 is provided with a limiting block 6 to prevent the nozzle from rotating.

Claims

1. A segmented composite intake duct, characterized by: The air inlet pipe comprises a metal part (2) and a rubber part (1), the rubber part (1) covers the metal part (2) to form an abutment and is fixedly connected through a glue joint structure, the inner surface of the metal part (2) is provided with a threaded groove (3), and the outer surface of the metal part (2) at the abutment is provided with a groove (4); the inner surface of the rubber part (1) is provided with a boss, and the boss is tightly matched with the groove (4).

2. The air intake tube of claim 1, wherein: The groove (4) is an annular groove or a point-shaped groove arranged in a ring shape.

3. The air intake tube of claim 1, wherein: The glue joint structure is a glue structure layer connecting the metal part (2) and the rubber part (1).

4. The air intake tube of claim 3, wherein: The area of the abutment is 60-80% of the area of the air inlet pipe.

5. The air intake tube of claim 1, wherein: The oil injection nozzle mounting part connected with the metal part (2) is provided with a limiting block (6).

6. The air intake tube of claim 1, wherein: The rubber part (1) is connected with the throttle valve body (7) of the motorcycle through a clamp, and the port of the rubber part (1) is provided with a limiting column (5) for limiting the throttle valve body (7).

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