CN205841054U - A kind of electromotor rubber air inlet pipe seals structure with the connection of pipe joint - Google Patents

Abstract

This utility model relates to the connection sealing structure of a kind of electromotor rubber air inlet pipe and pipe joint, including rubber air inlet pipe and the pipe joint that is connected with it, it is characterized in that: described rubber air inlet pipe is provided with an open circles frustum communicated therewith, and the inner surface of this open circles frustum is provided with anticreep groove；The outer surface of described pipe joint is provided with the seal convexity that multi-turn is dentation；The outer surface of described pipe joint and the inner surface interference fit of described open circles frustum.It decreases the use of anchor ear relative to prior art；Sealing effectiveness and anticreep is good, low cost；Produce and installation effectiveness meanwhile, it is capable to improve.

Description

A connection and sealing structure between an engine rubber intake pipe and a pipe joint

technical field

The utility model relates to an engine connection and sealing structure, in particular to a connection and sealing structure between an engine rubber intake pipe and a pipeline joint.

Background technique

In the prior art, it is necessary to ventilate the crankcase of the engine, the purpose of which is to prevent the pressure of the crankcase of the automobile engine from being too high, reduce the wear and corrosion of parts and prolong the service life of the engine oil. Generally, pipelines are used to connect the crankcase with the engine rubber intake pipe near the throttle valve, so as to discharge the oil-air mixture, water vapor and exhaust gas in the crankcase in time, and release the crankcase pressure at the same time. A pipe joint needs to be designed at the connection between the engine rubber intake pipe and the pipeline to facilitate the connection between the engine rubber intake pipe and the pipeline of the crankcase, to ensure a good sealing effect after the engine rubber intake pipe and the pipeline are matched and connected, and at the same time it is not easy Shedding occurs. The connection and sealing structure between the existing engine rubber intake pipe and the pipe joint is generally designed with multiple circles of tooth-shaped original sealing protrusions 21 on the original pipe joint 2. The matching part is fastened with hoop 3, as shown in Figure 1. However, this connection and sealing structure has a relatively large number of parts and a high cost.

Contents of the invention

The purpose of the utility model is to provide a connection and sealing structure between the rubber intake pipe of the engine and the pipe joint, which reduces the use of hoops compared with the prior art; the sealing effect and anti-dropping performance are good, and the cost is low; at the same time, it can improve Production and installation efficiency.

The utility model relates to a connection and sealing structure between a rubber intake pipe of an engine and a pipe joint, which comprises a rubber intake pipe and a pipe joint connected with it, and is characterized in that: the rubber intake pipe is provided with a hollow hole communicating with it. A truncated cone, the inner surface of the hollow truncated cone is provided with an anti-off groove; the outer surface of the pipeline joint is provided with multiple rings of tooth-shaped sealing protrusions; the outer surface of the pipeline joint and the hollow cone The inner surface of the table is an interference fit.

Further, the outer surface of the pipeline joint is also provided with a ring of anti-off protrusions, the anti-off protrusions are located between the two sealing protrusions and connected to the inner surface of the hollow conical truncated cone. The anti-off groove corresponds to fit.

Further, the height of the sealing protrusion is twice the interference between the hollow conical truncated cone and the pipeline joint.

Further, the distance from the lowest point of the anti-loosening groove to the outer surface of the hollow truncated cone is greater than or equal to ten times the interference between the hollow truncated cone and the pipeline joint.

Further, the height of the anti-loosening protrusion is four times of the interference between the hollow conical truncated cone and the pipeline joint.

Beneficial technical effect of the utility model:

Because the anti-off protrusion is designed on the hollow conical truncated, and the anti-off groove is designed on the pipeline joint, it reduces the use of hoops compared with the existing technology; the sealing effect and anti-off performance are good, and the cost is low; at the same time, it improves production and installation efficiency.

Description of drawings

Fig. 1 is the structural representation of the connection sealing structure of existing engine rubber intake pipe and pipeline joint;

Fig. 2 is a structural representation of the utility model;

Fig. 3 is a structural schematic diagram of a pipeline joint;

Fig. 4 is a structural schematic diagram of the rubber intake pipe.

In the picture: 1-Original engine rubber intake pipe, 2-Original pipe joint, 3-Hoop, 21-Original sealing protrusion;

4-Rubber intake pipe, 5-Pipe joint;

41-hollow conical frustum, 42-anti-off groove;

51-sealing protrusion, 52-anti-off protrusion;

a-the interference between the hollow truncated cone and the pipeline joint, b-the outer diameter of the pipeline joint, c-the inner diameter of the hollow cone truncated.

detailed description

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

See Figure 2 for a connection sealing structure between an engine rubber intake pipe and a pipe joint, including a rubber intake pipe 4 and a pipe joint 5 that is matched and connected to it, and its essential features are:

The rubber intake pipe 4 is provided with a hollow conical truncated 41 communicating with it, and the inner surface of the hollow conical truncated 41 is provided with an anti-off groove 42; the outer surface of the pipeline joint 5 is provided with three rings of tooth-shaped seals. The protrusion 51 ; the outer surface of the pipeline joint 5 is in interference fit with the inner surface of the hollow conical truncated cone 41 . In this embodiment, the hollow conical frustum 41 is arranged on the right part of the rubber inlet pipe 4 , and can be arranged on any part of the rubber inlet pipe 4 as required.

Referring to Fig. 2 or Fig. 3, the outer surface of the pipeline joint 5 is also provided with a ring-shaped anti-off protrusion 52, and the anti-off protrusion 52 is located on the second ring of sealing protrusions from left to right. Between the third ring of sealing protrusions, the anti-loosening protrusions 52 correspond to the anti-loosening grooves 42 on the inner surface of the hollow truncated cone 41 . Since the anti-off groove 42 is designed on the inner surface of the hollow conical truncated cone 41, and the anti-off groove 42 is designed on the outer surface of the pipeline joint 5, the anti-off effect is good. Compared with the prior art, the loss of the hoop is reduced. use.

The height of the sealing protrusion 51 is twice the interference between the hollow truncated cone 41 and the pipeline joint 5 .

The distance from the lowest point of the anti-breakout groove 42 to the outer surface of the hollow truncated cone 41 is greater than or equal to ten times the interference between the hollow truncated cone 41 and the pipeline joint 5 .

The height of the anti-loosening protrusion 52 is four times of the interference between the hollow truncated cone 41 and the pipeline joint 5 .

Referring to Fig. 2, Fig. 3 and Fig. 4, assuming that the inner diameter of the hollow conical truncated 41 is c, the interference between the hollow conical truncated 41 and the pipeline joint 5 is a, and the outer diameter b of the pipeline joint 5 should be c+2a, The height of the sealing protrusion 51 is designed to be 2a, the height of the anti-off protrusion 52 is designed to be 4a, and the distance from the lowest point of the anti-off groove 42 to the outer surface of the hollow truncated cone 41 is greater than or equal to 10a; after verification, the designed The sealing and anti-off effects are relatively good. The vertical distance from the lowest point of the anti-off groove 42 to the outer surface of the hollow truncated cone 41 is greater than or equal to 10a. The purpose is to ensure that the hollow truncated cone 41 has sufficient thickness.

Compared with the prior art, the utility model reduces the use of hoops; the utility model has good sealing effect and detachment resistance, and low cost; meanwhile, the production and installation efficiency can be improved.

Claims (5)

1. electromotor rubber air inlet pipe seals a structure with the connection of pipe joint, including rubber air inlet pipe (4) and joins with it Close the pipe joint (5) connected, it is characterized in that: described rubber air inlet pipe (4) is provided with an open circles frustum communicated therewith (41), the inner surface of this open circles frustum (41) is provided with anticreep groove (42)；The outer surface of described pipe joint (5) is provided with multi-turn Seal convexity (51) in dentation；The outer surface of described pipe joint (5) and the inner surface interference of described open circles frustum (41) Coordinate.

Electromotor rubber air inlet pipe the most according to claim 1 seals structure with the connection of pipe joint, it is characterized in that: institute The outer surface stating pipe joint (5) is additionally provided with anticreep projection (52) that a circle is annular, and described anticreep protruding (52) is positioned at two Enclose between described seal convexity (51) and with anticreep groove (42) corresponding matching of described open circles frustum (41) inner surface.

Electromotor rubber air inlet pipe the most according to claim 1 and 2 seals structure, its feature with the connection of pipe joint It is: the height of described seal convexity (51) is the twice of open circles frustum (41) and pipe joint (5) magnitude of interference.

Electromotor rubber air inlet pipe the most according to claim 1 and 2 seals structure, its feature with the connection of pipe joint It is: the distance of described anticreep groove (42) minimum point to described open circles frustum (41) outer surface is more than or equal to described hollow Ten times of the frustum of a cone (41) and pipe joint (5) magnitude of interference.

Electromotor rubber air inlet pipe the most according to claim 1 and 2 seals structure, its feature with the connection of pipe joint It is: four times that height is open circles frustum (41) and pipe joint (5) magnitude of interference of described anticreep protruding (52).