CN210460913U

CN210460913U - Air inlet manifold branch

Info

Publication number: CN210460913U
Application number: CN201921577792.3U
Authority: CN
Inventors: 钟建斌
Original assignee: Zhejiang Boyi Technology Co ltd
Current assignee: Zhejiang Boyi Technology Co ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-05-05
Anticipated expiration: 2029-09-20

Abstract

The utility model belongs to the technical field of the engine, refer in particular to an air intake manifold, including the manifold assembly, the manifold assembly is including casing and manifold lower casing on the manifold, is provided with annular spacing groove along its border on the interior terminal surface of casing on the manifold, and the tank bottom department in annular spacing groove is provided with the connection arch, is provided with the flange on the interior terminal surface of casing under the manifold, on the manifold between the interior terminal surface of casing under interior terminal surface of casing and the manifold, all form integral type structure through the fusion bonding between the interior terminal surface of flange and the interior terminal surface of being connected protruding border. The utility model discloses air intake manifold only by the manifold on the casing constitute with the casing group under the manifold, has effectively shortened the total length of weld face, makes on the manifold casing and manifold casing's butt fusion fixed can form two weld face structures with the help of the hoop spacing groove, and the flange can form a weld face structure with the butt fusion of connecting protruding edge is fixed, thereby makes the utility model discloses possess three weld face structures, effectively improve sealing performance.

Description

Air inlet manifold branch

The technical field is as follows:

the utility model belongs to the technical field of the engine, refer in particular to an air intake manifold.

Background art:

in order to realize the light weight development of automobiles, save energy, reduce consumption, increase the speed of automobiles and reduce cost, automobile manufacturers are increasingly selecting plastics to replace metals to manufacture the intake manifold.

In the prior art, an intake manifold is formed by welding and fixing a plurality of injection-molded components, and the quality of a welding process among the components directly influences the sealing performance of the intake manifold, so that the sealing performance of the intake manifold is limited, namely, the air leakage phenomenon of the intake manifold inevitably exists. Therefore, in order to ensure the working performance of the engine, the automobile manufacturers have strict requirements on the sealing performance of the intake manifold, and the leakage amount of the intake manifold under the pressure difference of 2.5bar relative pressure is required to be less than 50 ml/min.

The existing intake manifold is formed by welding and fixing a plurality of components, the total length of a welding surface is long, the structure is simple, and the defect of air leakage is easily caused by insufficient quality of a welding process.

The invention content is as follows:

the utility model aims at providing an air intake manifold that the total length of weld face is short, the structure is complicated and sealing performance is good.

The utility model discloses a realize like this:

the utility model provides an air inlet manifold, includes the manifold assembly who has the cavity, the manifold assembly is including casing under casing on the manifold and the manifold, forms between casing under casing on the manifold and the manifold the cavity, is provided with annular spacing groove along its border on the interior terminal surface of casing on the manifold, and the tank bottom department in annular spacing groove is provided with the connection arch, be provided with the flange corresponding with the connection arch on the interior terminal surface of casing under the manifold, all form the integral type structure through the fusion bonding between the interior terminal surface of casing and the interior terminal surface of casing under the manifold on the manifold, between the interior terminal surface of flange and the interior terminal surface of connecting protruding edge.

In the intake manifold, the width of the flange is greater than that of the connecting protrusion, the inner end surface of the flange is provided with the connecting groove, the connecting protrusion is inserted into the connecting groove, and the connecting protrusion and the connecting groove are fused to form an integrated structure.

In the above intake manifold, a sealing ring is arranged between one side of the joint of the connecting protrusion and the flange and the corresponding side of the annular limiting groove; or sealing rings are arranged between the two sides of the joint of the connecting bulge and the flange and the corresponding sides of the annular limiting groove respectively.

In the above intake manifold, the cross section of the sealing ring is in an L-shaped structure, the short side arm of the sealing ring is located between the connecting protrusion and the annular limiting groove, and the long side arm of the sealing ring is located between the flange and the annular limiting groove.

In the above intake manifold, a thickness of fusion bonding between the inner end surface of the manifold upper shell and the inner end surface of the manifold lower shell is equal to or less than a thickness of fusion bonding between the inner end surface of the flange and the inner end surface of the connecting flange.

In the above intake manifold, the manifold upper housing is provided with a mounting hole for connecting with an engine, the manifold upper housing is provided with an air inlet and an air outlet which are communicated with the cavity, and an inner port of the air inlet is arranged towards the manifold upper housing.

Compared with the prior art, the utility model outstanding advantage is:

1. the utility model discloses air intake manifold only comprises manifold upper housing and manifold lower housing, and it has effectively shortened the total length of weld surface, makes the butt fusion of the inner terminal surface of manifold upper housing and the inner terminal surface of manifold lower housing to fix and can form two weld surface structures with the help of the hoop spacing groove, and the butt fusion of the inner terminal surface of flange and the inner terminal surface of connecting the protruding edge can form a weld surface structure, thereby makes the utility model discloses possess three weld surface structures, effectively improve sealing performance;

2. the utility model discloses the sealing washer sets up between two adjacent weld face structures to can fill the weld face that has the gas leakage defect, effectively improve air intake manifold's sealing performance, and reduce air intake manifold's sealing performance to the dependence of welding process quality.

Description of the drawings:

fig. 1 is an overall perspective view of the present invention;

FIG. 2 is an overall exploded view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3.

In the figure: 1. a manifold upper housing; 2. a manifold lower housing; 3. a connecting projection; 4. a flange; 5. a seal ring; 6. mounting holes; 7. an air inlet; 8. and an air outlet.

The specific implementation mode is as follows:

the invention will now be further described with reference to specific embodiments, with reference to figures 1 to 4:

an intake manifold comprises a manifold assembly with a cavity, wherein the manifold assembly comprises an upper manifold shell 1 and a lower manifold shell 2, the cavity is formed between the upper manifold shell 1 and the lower manifold shell 2, an annular limiting groove is formed in the inner end face of the upper manifold shell 1 along the edge of the inner end face, a connecting protrusion 3 is arranged at the groove bottom of the annular limiting groove, a flange 4 corresponding to the connecting protrusion 3 is arranged on the inner end face of the lower manifold shell 2, and an integrated structure is formed between the inner end face of the upper manifold shell 1 and the inner end face of the lower manifold shell 2 and between the inner end face of the flange 4 and the inner end face of the connecting protrusion through fusion bonding.

The utility model discloses an air intake manifold only comprises manifold upper shell 1 and manifold lower shell 2, which effectively shortens the total length of the welding surface; simultaneously, make on the manifold casing 1 the inner terminal surface of casing and manifold down the butt fusion of the inner terminal surface of casing 2 fixed can form two weld face structures with the help of the hoop spacing groove, the inner terminal surface of flange 4 and the butt fusion of the inner terminal surface of connecting protruding edge are fixed can form a weld face structure, thereby make the utility model discloses possess three weld face structures, effectively improve sealing performance.

The welding between the inner end surface of the upper manifold shell 1 and the inner end surface of the lower manifold shell 2 and between the inner end surface of the flange 4 and the inner end surface of the connecting ledge can adopt a high-frequency vibration welding process in the prior art, namely, energy is transmitted to the corresponding two end surfaces through high-frequency vibration, so that the corresponding two end surfaces generate local high temperature, and then the corresponding two end surfaces are melted to form a whole. Meanwhile, a vibration friction welding process in the prior art can also be adopted, namely the corresponding two end faces are rubbed together under certain pressure until the generated friction and shearing heat enable the two end faces to reach a fully molten state.

Furthermore, in order to increase the area of the welding surface between the connecting flange and the flange 4, the width of the flange 4 is greater than that of the connecting protrusion 3, a connecting groove is formed on the inner end surface of the flange 4, the connecting protrusion 3 is inserted into the connecting groove, and the connecting protrusion 3 and the connecting groove are fused to form an integrated structure.

Meanwhile, in order to further improve the sealing performance of the utility model, the two sides of the joint of the connecting bulge 3 and the flange 4 are respectively provided with a sealing ring 5 between the corresponding sides of the annular limiting groove. The sealing ring 5 is arranged between two adjacent welding surface structures, so that the welding surface with the air leakage defect can be filled, the sealing performance of the air inlet manifold is effectively improved, and the dependence of the sealing performance of the air inlet manifold on the quality of a welding process is reduced.

Of course, only one sealing ring 5 may be provided, that is, the sealing ring 5 is provided between one side of the joint of the connecting protrusion 3 and the flange 4 and the corresponding side of the annular limiting groove;

furthermore, in order to enable the sealing ring 5 to be matched with the structures of the connecting protrusion 3 and the flange 4, the cross section of the sealing ring 5 is in an L-shaped structure, the short side arm of the sealing ring 5 is located between the connecting protrusion 3 and the annular limiting groove, and the long side arm of the sealing ring 5 is located between the flange 4 and the annular limiting groove.

Further, the fusion-joining thickness between the inner end surface of the manifold upper case 1 and the inner end surface of the manifold lower case 2 is equal to or less than the fusion-joining thickness between the inner end surface of the flange 4 and the inner end surface of the connecting flange.

In addition, intake manifold is at normal working process, in order to avoid intake manifold's admit air current to the manifold on the casing 1 with manifold casing 2 under the department of linking, lead to casing 1 and manifold casing 2 wearing and tearing to send to, and then appear the gas leakage phenomenon down, be provided with the mounting hole 6 that is used for being connected with the engine on the manifold on the casing 1, be provided with on the manifold on the casing 1 with the air inlet 7 and the gas outlet 8 of cavity intercommunication, the interior port of air inlet 7 sets up towards casing 1 on the manifold.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. An intake manifold comprising a manifold assembly having a cavity, characterized in that: the manifold assembly comprises an upper manifold shell (1) and a lower manifold shell (2), a cavity is formed between the upper manifold shell (1) and the lower manifold shell (2), an annular limiting groove is formed in the inner end face of the upper manifold shell (1) along the edge of the inner end face, a connecting protrusion (3) is arranged at the groove bottom of the annular limiting groove, a flange (4) corresponding to the connecting protrusion (3) is arranged on the inner end face of the lower manifold shell (2), and the inner end face of the upper manifold shell (1) and the inner end face of the lower manifold shell (2) and the inner end face of the flange (4) and the inner end face of the connecting protrusion are all in fusion joint to form an integrated structure.

2. An intake manifold according to claim 1, wherein: the width of the flange (4) is larger than that of the connecting protrusion (3), the inner end face of the flange (4) is provided with a connecting groove, the connecting protrusion (3) is inserted into the connecting groove, and the connecting protrusion (3) and the connecting groove are fused to form an integrated structure.

3. An intake manifold according to claim 1 or 2, wherein: a sealing ring (5) is arranged between one side of the joint of the connecting bulge (3) and the flange (4) and the corresponding side of the annular limiting groove; or sealing rings (5) are respectively arranged between the two sides of the joint of the connecting bulge (3) and the flange (4) and the corresponding sides of the annular limiting groove.

4. An intake manifold according to claim 3, wherein: the cross section of the sealing ring (5) is of an L-shaped structure, the short side arms of the sealing ring (5) are located between the connecting bulges (3) and the annular limiting groove, and the long side arms are located between the flange (4) and the annular limiting groove.

5. An intake manifold according to claim 1, wherein: the fusion joint thickness between the inner end surface of the upper manifold shell (1) and the inner end surface of the lower manifold shell (2) is less than or equal to the fusion joint thickness between the inner end surface of the flange (4) and the inner end surface of the connecting convex edge.

6. An intake manifold according to claim 1, wherein: the manifold is characterized in that a mounting hole (6) used for being connected with an engine is formed in the manifold upper shell (1), an air inlet (7) and an air outlet (8) communicated with the cavity are formed in the manifold upper shell (1), and an inner port of the air inlet (7) faces the manifold upper shell (1).