Engine air inlet pipe and preparation method

Abstract

The invention relates to an engine air inlet pipe and a manufacturing method, the engine air inlet pipe comprises a supporting ring and a welding piece, a first hose used for being connected with the air inlet end of an engine is formed at one end of the supporting ring in a blow molding mode, and a corrugated pipe and a second hose used for being connected with the exhaust end of an air filter are formed at the other end of the supporting ring in a blow molding mode; the corrugated pipe is connected with the second hose and the supporting ring, the supporting ring, the first hose and the corrugated pipe are connected into a whole in a fusion mode, materials of the supporting ring, the first hose, the corrugated pipe and the second hose are mutually fused, the hardness of the supporting ring is larger than that of the first hose, and the hardness of the supporting ring is larger than that of the second hose. The hardness of the support ring is greater than that of the corrugated pipe; the welding piece is welded to the side face of the supporting ring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts, in particular to an engine air inlet pipe and a preparation method. BACKGROUND

[0002] With the rapid development of the automobile industry, automobiles have become one of the indispensable means of transportation for people. As an important part of the engine intake and exhaust system, the rationality and reliability of the air inlet pipe directly affect the performance and service life of the engine.

[0003] In related technologies, in the engine air intake system, an air filter is usually used to filter air. The air filter and the engine are connected by a hose and a hard joint. To ensure the sealing, the hose and the hard joint need to be interference fitted, a ring clamp needs to be arranged between the hose and the hard joint, and a transition bracket needs to be arranged for the hard joint to provide support. As a result, there are many parts on the pipeline, the processing procedure is complex, the cost of the pipeline of a single vehicle is high, and the overall size is large, which increases the load of the vehicle.

[0004] Therefore, it is necessary to design a new engine air inlet pipe to overcome the above problems. SUMMARY

[0005] The present application provides an engine air inlet pipe and a preparation method, which can solve the technical problems that in related technologies, a ring clamp needs to be arranged between a hose and a hard joint, a transition bracket needs to be arranged for the hard joint to provide support, there are many parts on the pipeline, the processing procedure is complex, the cost of the pipeline of a single vehicle is high, and the overall size is large, which increases the load of the vehicle.

[0006] In a first aspect, an engine air inlet pipe is provided, which includes a support ring and a welding piece. One end of the support ring is blow molded to form a first hose for connecting an engine air inlet end. The other end of the support ring is blow molded to form a corrugated pipe and a second hose for connecting an air filter exhaust end. The corrugated pipe connects the second hose and the support ring, and the support ring, the first hose and the corrugated pipe are integrated. The materials of the support ring, the first hose, the corrugated pipe and the second hose are mutually melted. The hardness of the support ring is greater than the hardness of the first hose, and the hardness of the support ring is greater than the hardness of the corrugated pipe. The welding piece is welded to the side surface of the support ring.

[0007] The support ring is made of hard material, and provides support for the welding part, facilitating welding. The bellows is made of soft material, and is easy to deform, so as to adjust the angle of the second hose. The hardness of the support ring is greater than the hardness of the bellows, and the hardness of the support ring is greater than the hardness of the first hose, so that the engine air intake pipe forms a soft-hard-soft structure pipe. The first hose and the second hose are made of soft material, facilitating assembly and sealing. The materials of the support ring, the first hose, the bellows and the second hose are mutually fused. In the injection molding process, the support ring, the first hose and the bellows are fused into one body. No ring clamp is needed between the support ring and the first hose, and between the support ring and the bellows. The weight of the support ring is reduced. The support ring does not need to be provided with a transition support, so that the number of sub-components of the engine air intake pipe is reduced, the machining process is reduced, the cost of a single vehicle pipe is reduced, the occupied space of the engine air intake pipe is reduced, and the load of the whole vehicle is reduced.

[0008] In combination with the first aspect, in an implementation manner, the support ring, the first hose, the bellows and the second hose are all made of TPV material. The hardness of the support ring is set to 75-85A, and the hardness of the bellows is set to 50-60A. The support ring, the first hose, the bellows and the second hose are made of the same material, so that the connection strength between the parts of the engine air intake pipe is optimal. The TPV (thermoplastic vulcanized rubber) material has the characteristics of blow molding, injection molding and large hardness selection range. The elastomer content in the support ring is less than that in the first hose, the bellows and the second hose. The support ring has high hardness, and the bellows has low hardness. The hardness of the support ring is set to 80A, and the hardness of the bellows is set to 55A.

[0009] In the second aspect, the embodiments of the present application provide a preparation method of an engine air intake pipe, which comprises the following steps: A support ring is made by injection molding process; The support ring is placed in a blow molding mold of a bellows. A first hose is made at one end of the support ring by blow molding process, and a bellows and a second hose are made at the other end of the support ring. The bellows connects the second hose and the support ring, and the support ring is fused with the first hose and the bellows into one body to form a pipe body of the engine air intake pipe. The materials of the support ring, the first hose, the bellows and the second hose are mutually fused; A welding part is welded on the pipe body of the engine air intake pipe to form the engine air intake pipe.

[0010] The support ring is made by injection molding process, as shown in Figure 5The support ring is placed in a blow molding mold of the corrugated pipe, the first hose is made at one end of the support ring by an injection molding process, the corrugated pipe and the second hose are made at the other end of the support ring by an injection molding process, the support ring is made of a hard material, the first hose, the corrugated pipe and the second hose are made of a soft material, the materials of the support ring, the first hose, the corrugated pipe and the second hose are mutually fused, the support ring is fused with the first hose and the corrugated pipe into one body in the injection molding process, and a ring clamp does not need to be arranged between the support ring and the first hose and between the support ring and the corrugated pipe, the weight of the support ring is reduced, the support ring does not need to be provided with a transition support, the number of sub-components of the engine intake pipe is reduced, the processing procedure is reduced, the cost of a single vehicle pipeline is reduced, the occupied space of the engine intake pipe is reduced, and the load of the whole vehicle is reduced.

[0011] In combination with the second aspect, in an implementation mode, a side surface of the support ring is provided with a wedge-shaped engagement structure, the wedge-shaped engagement structure comprises a plurality of wedge-shaped structures connected with each other, an outer peripheral distance between two adjacent wedge-shaped structures is smaller than an inner side distance, The support ring is placed in a blow molding mold of the corrugated pipe, the first hose is made at one end of the support ring by an injection molding process, the corrugated pipe and the second hose are made at the other end of the support ring by an injection molding process, the support ring is made of a hard material, the first hose, the corrugated pipe and the second hose are made of a soft material, the materials of the support ring, the first hose, the corrugated pipe and the second hose are mutually fused, the support ring is fused with the first hose and the corrugated pipe into one body in the injection molding process, and a ring clamp does not need to be arranged between the support ring and the first hose and between the support ring and the corrugated pipe, the weight of the support ring is reduced, the support ring does not need to be provided with a transition support, the number of sub-components of the engine intake pipe is reduced, the processing procedure is reduced, the cost of a single vehicle pipeline is reduced, the occupied space of the engine intake pipe is reduced, and the load of the whole vehicle is reduced. The gap of the wedge-shaped engagement structure is filled, and the wedge-shaped engagement structure is fused with the filler.

[0012] The plurality of wedge-shaped structures form a ring, the filler fills the gap of each wedge-shaped structure and is fused with the wedge-shaped engagement structure to form a double-layer pipe wall during the blow molding process at the two ends of the support ring, the wedge-shaped engagement structure is arranged as a wedge-shaped structure with an outer width and an inner narrowness along the extension direction of the support ring, the wedge-shaped engagement structure increases the bonding area of the support ring and the filler, improves the bonding strength of the support ring and the filler, and provides a reverse supporting force generated by a relative punching drag force for subsequent punching of the support ring, thereby preventing the blow molding pipe from being separated from the support ring, the wedge-shaped engagement structure presents a wedge-shaped structure with an upper width and a lower narrowness along the thickness direction of the support ring, and provides a punching supporting force generated by a slope surface of the wedge-shaped structure for subsequent punching of the support ring, thereby preventing the blow molding pipe from being separated from the support ring.

[0013] In combination with the second aspect, in an implementation mode, the welding of the welding piece on the pipe body of the engine intake pipe comprises: After the pipe body of the engine intake pipe is cooled, the support ring is punched on the side surface, and the welding piece is welded on the punched area of the support ring to form the engine intake pipe.

[0014] Wherein, after the tube body of the engine intake pipe is cooled, the filling area of the wedge-shaped occlusion structure is punched to form a punch hole, and the welder is welded on the periphery of the punch hole to form the engine intake pipe, wherein the center of the wedge-shaped occlusion structure coincides with the center of the punch hole.

[0015] In combination with the second aspect, in an embodiment, the punching on the side of the support ring and welding the welder on the punch area of the support ring comprises: punching on the side of the support ring to form a first punch hole and a second punch hole, welding a first welder on the first punch area of the support ring, and welding a second welder on the second punch area of the support ring.

[0016] Wherein, the first welder is made by a blow molding process, and the second welder is made by an injection molding process, the first welder is welded on the first punch area of the support ring, and the second welder is welded on the second punch area of the support ring to form a final product.

[0017] In combination with the second aspect, in an embodiment, the periphery of the first punch hole is fixed with a first guide ring, and the periphery of the second punch hole is surrounded by a second guide ring, the welding of the first welder on the first punch area of the support ring and the welding of the second welder on the second punch area of the support ring comprises: welding the first welder on the periphery of the first punch hole of the support ring and welding the second welder on the periphery of the second punch hole of the support ring, so that the first guide ring is fused with the base of the first welder, and the second guide ring is fused with the base of the second welder.

[0018] Wherein, the first guide ring is adapted to the base of the first welder, and the second guide ring is adapted to the base of the second welder, and the first guide ring is set as a circular ring and the second guide ring is set as an arc-shaped ring, in the fusion of the first guide ring with the base of the first welder and the fusion of the second guide ring with the base of the second welder, the tube body of the engine intake pipe forms an integral whole with the first welder and the second welder.

[0019] In combination with the second aspect, in an embodiment, the welding of the welder on the punch area of the support ring comprises: welding the welder on the punch area of the support ring by a hot plate welding process, so that the welder is fused with the support ring.

[0020] The base of the welding piece to be welded and the guide ring of the support ring are first matched, then the connection part of the welding piece to be welded and the support ring is heated to a molten state by using a heating plate, then the heating plate is removed, and the welding piece to be welded and the support ring are fused by pressing, and finally the welding piece and the support ring are cooled and shaped to form an integral whole.

[0021] In combination with the second aspect, in an implementation, the thickness of the punched area of the support ring is less than the thickness of the non-punched area of the support ring.

[0022] The thickness of the punched area of the support ring is relatively thin compared with the thickness of the non-punched area of the support ring, and the difficulty of punching is reduced.

[0023] In combination with the second aspect, in an implementation, the hardness of the two ends of the bellows is less than the hardness of the body of the bellows.

[0024] The hardness of the two ends of the bellows is less than the hardness of the body of the bellows, so as to improve the flexibility of the connection part between the bellows and the support ring and the connection part between the bellows and the second hose.

[0025] The technical scheme provided by the embodiments of the present application has the following beneficial effects: The first hose is formed by blow molding at one end of the support ring, the bellows and the second hose are formed by blow molding at the other end of the support ring, the bellows connects the second hose and the support ring, and the support ring is fused with the first hose and the bellows to form an integral whole, thereby reducing the number of ring hoops and the number of transition supports, solving the technical problem that in the related art, a ring hoop needs to be arranged between a hose and a hard joint, and a transition support needs to be arranged to support the hard joint, resulting in more components on the pipeline, complex processing procedures, high cost of a single vehicle pipeline, and large overall size, which increases the load of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0027] Figure 1 A structure schematic diagram of an engine intake pipe is provided in the embodiments of the present application. Figure 2 A structure schematic diagram of a support ring is provided in the embodiments of the present application. Figure 3 A schematic view of the wedge-shaped occlusion structure before fusion is provided for the embodiments of the present application. Figure 4 A schematic view of the wedge-shaped occlusion structure after fusion is provided for the embodiments of the present application. Figure 5 A schematic view of the support ring in the blow molding mold is provided for the embodiments of the present application. Figure 6 A structural schematic view of the tube body of the engine intake pipe is provided for the embodiments of the present application.

[0028] Figure 7 A structural schematic view of the first welding piece is provided for the embodiments of the present application. Figure 8 A structural schematic view of the second welding piece is provided for the embodiments of the present application.

[0029] In the figure: 1, support ring; 11, wedge-shaped occlusion structure; 12, first punching; 13, second punching; 14, first guide ring; 15, second guide ring; 2, first hose; 3, corrugated pipe; 4, second hose; 5, first welding piece; 6, second welding piece. DETAILED DESCRIPTION

[0030] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] The embodiments of the present application provide an engine intake pipe and a preparation method, which can solve the technical problem that a ring is needed to be arranged between the hose and the hard joint, and a transition support needs to be arranged to support the hard joint, resulting in more components on the pipeline, complex processing procedures, high cost of the pipeline of a single vehicle, and large overall size, which increases the load of the vehicle.

[0032] Referring to Figure 1As shown, the engine intake pipe provided by the embodiment of the present application comprises a support ring 1 and a welding piece, one end of the support ring 1 is blow molded to form a first hose 2 for connecting an engine intake end, the other end of the support ring 1 is blow molded to form a bellows 3 and a second hose 4 for connecting an air filter exhaust end, the bellows 3 connects the second hose 4 and the support ring 1, and the support ring 1, the first hose 2 and the bellows 3 are fused into one body, wherein the materials of the support ring 1, the first hose 2, the bellows 3 and the second hose 4 are mutually fusible, the hardness of the support ring 1 is greater than the hardness of the first hose 2, and the hardness of the support ring 1 is greater than the hardness of the bellows 3; the welding piece is welded to the side surface of the support ring 1.

[0033] In the embodiment, the support ring 1 adopts a hard material to provide support force for the welding piece, facilitating welding, the bellows 3 adopts a soft material and is easy to deform, so as to adjust the angle of the second hose 4, the hardness of the support ring 1 is greater than the hardness of the bellows 3, and the hardness of the support ring 1 is greater than the hardness of the first hose 2, so that the engine intake pipe forms a pipe with a soft-hard-soft structure, the first hose 2 and the second hose 4 adopt soft materials, facilitating assembly and sealing, the materials of the support ring 1, the first hose 2, the bellows 3 and the second hose 4 are mutually fusible, the support ring 1, the first hose 2 and the bellows 3 are fused into one body in the process of injection molding, and no ring hoop is needed to be arranged between the support ring 1 and the first hose 2 and between the support ring 1 and the bellows 3, the weight of the support ring 1 is reduced, the support ring 1 does not need to be provided with a transition support, the number of sub-components of the engine intake pipe is reduced, the machining process is reduced, the cost of a single vehicle pipe is reduced, the occupied space of the engine intake pipe is reduced, and the load of the whole vehicle is reduced.

[0034] The embodiment reduces the number of ring hoops and transition supports by blow molding the first hose 2 at one end of the support ring 1 and blow molding the bellows 3 and the second hose 4 at the other end of the support ring 1, the bellows 3 connects the second hose 4 and the support ring 1, and the support ring 1 is fused with the first hose 2 and the bellows 3 into one body, thereby solving the technical problem in the related art that a ring hoop needs to be arranged between a hose and a hard joint, and a transition support needs to be arranged for the hard joint to provide support, resulting in more components on the pipe, complex machining process, high cost of a single vehicle pipe, large overall size and increased load of the whole vehicle.

[0035] Further, referring to Figure 1As shown in the drawings, in some embodiments, the support ring 1, the first hose 2, the bellows 3 and the second hose 4 are all made of TPV material, the hardness of the support ring 1 is set to 75-85A, and the hardness of the bellows 3 is set to 50-60A.

[0036] In this embodiment, the support ring 1, the first hose 2, the bellows 3 and the second hose 4 are made of the same material, which ensures the optimal connection strength between the various parts of the engine air intake pipe. The TPV (thermoplastic vulcanized rubber) material has the characteristics of blow molding, injection molding and large hardness selection range. The elastomer content in the support ring 1 is relatively less than that in the first hose 2, the bellows 3 and the second hose 4. The support ring 1 has high hardness, and the bellows 3 has low hardness. For example, the hardness of the support ring 1 is set to 80A, and the hardness of the bellows 3 is set to 55A.

[0037] Referring to Figure 1 and Figure 2 As shown in the drawings, the application provides a preparation method of an engine air intake pipe, which comprises the following steps: S1: using an injection molding process to make a support ring 1.

[0038] S2: placing the support ring 1 in a blow molding mold of the bellows 3, using a blow molding process to make a first hose 2 at one end of the support ring 1, and making a bellows 3 and a second hose 4 at the other end of the support ring 1, so that the bellows 3 connects the second hose 4 and the support ring 1, and the support ring 1 is fused with the first hose 2 and the bellows 3 to form a pipe body of the engine air intake pipe, wherein the materials of the support ring 1, the first hose 2, the bellows 3 and the second hose 4 are mutually fused.

[0039] S3: welding a welding part on the pipe body of the engine air intake pipe to form the engine air intake pipe.

[0040] In this embodiment, the support ring 1 is made by an injection molding process, as shown in Figure 5As shown, the support ring 1 is placed in the blow molding mold of the corrugated pipe 3, the first hose 2 is made at one end of the support ring 1 by the injection molding process, and the corrugated pipe 3 and the second hose 4 are made at the other end of the support ring 1 by the injection molding process, the support ring 1 is made of hard material, the first hose 2, the corrugated pipe 3 and the second hose 4 are made of soft material, the materials of the support ring 1, the first hose 2, the corrugated pipe 3 and the second hose 4 are mutually fused, the support ring 1 is fused with the first hose 2 and the corrugated pipe 3 into one body in the injection molding process, and the support ring 1 and the first hose 2 and the support ring 1 and the corrugated pipe 3 do not need to be provided with a ring clamp, the weight of the support ring 1 is reduced, the support ring 1 does not need to be provided with a transition support, the number of sub-components of the engine intake pipe is reduced, the processing procedure is reduced, the cost of a single vehicle pipeline is reduced, the occupied space of the engine intake pipe is reduced, and the load of the whole vehicle is reduced.

[0041] Further, referring to Figures 1-4 As shown, in some embodiments, the side surface of the support ring 1 is provided with a wedge-shaped engagement structure 11, the wedge-shaped engagement structure 11 includes a plurality of interconnected wedge-shaped structures, the outer peripheral distance between adjacent two wedge-shaped structures is smaller than the inner side distance, the support ring 1 is placed in the blow molding mold of the corrugated pipe 3, the first hose 2 is made at one end of the support ring 1 by the blow molding process, and the corrugated pipe 3 and the second hose 4 are made at the other end of the support ring 1, and the method further comprises: Filling the gap of the wedge-shaped engagement structure 11, so that the wedge-shaped engagement structure 11 is fused with the filler.

[0042] In this embodiment, a plurality of wedge-shaped structures form a ring, during the blow molding process at both ends of the support ring 1, the filler fills the gap of each wedge-shaped structure and is fused with the wedge-shaped engagement structure 11 to form a double-layer pipe wall, the wedge-shaped engagement structure 11 is arranged as a wedge-shaped structure with a wide outer part and a narrow inner part along the extension direction of the support ring 1, the wedge-shaped engagement structure 11 increases the bonding area of the support ring 1 and the filler, improves the bonding strength of the support ring 1 and the filler, and provides a reverse supporting force generated by the relative punching drag force for subsequent punching of the support ring 1, to prevent the blow molding pipe from separating from the support ring 1, the wedge-shaped engagement structure 11 presents a wedge-shaped structure with a wide upper part and a narrow lower part along the thickness direction of the support ring 1, to provide a punching support force generated by the slope surface of the wedge-shaped structure for subsequent punching of the support ring 1, to prevent the blow molding pipe from separating from the support ring 1.

[0043] Further, referring to Figures 6-8 As shown, in some embodiments, the welding of the welding member on the pipe body of the engine intake pipe comprises: After the tube of the engine intake pipe is cooled, the side of the support ring 1 is punched, and the welding piece is welded at the punched area of the support ring 1 to form the engine intake pipe.

[0044] In this embodiment, after the tube of the engine intake pipe is cooled, the filling area of the wedge-shaped engagement structure 11 is punched to form a punched hole, and the welding piece is welded at the periphery of the punched hole to form the engine intake pipe, wherein the center of the wedge-shaped engagement structure 11 coincides with the center of the punched hole.

[0045] Further, referring to Figures 6-8 In some embodiments, as shown in the drawings, the punching at the side of the support ring 1 and the welding of the welding piece at the punched area of the support ring 1 include: The side of the support ring 1 is punched to form a first punched hole 12 and a second punched hole 13, and a first welding piece 5 is welded at the first punched hole 12 area of the support ring 1, and a second welding piece 6 is welded at the second punched hole 13 area of the support ring 1.

[0046] In this embodiment, the first welding piece 5 is made by a blow molding process, and the second welding piece 6 is made by an injection molding process, the first welding piece 5 is welded at the first punched hole 12 area of the support ring 1, and the second welding piece 6 is welded at the second punched hole 13 area of the support ring 1 to form the final product.

[0047] Further, referring to Figure 1 , Figures 6-8 In some embodiments, as shown in the drawings, the periphery of the first punched hole 12 is fixed with a first guide ring 14, and the periphery of the second punched hole 13 is surrounded by a second guide ring 15, The welding of the first welding piece 5 at the first punched hole 12 area of the support ring 1 and the welding of the second welding piece 6 at the second punched hole 13 area of the support ring 1 include: The first welding piece 5 is welded at the periphery of the first punched hole 12 of the support ring 1, and the second welding piece 6 is welded at the periphery of the second punched hole 13 of the support ring 1, so that the first guide ring 14 is fused with the base of the first welding piece 5, and the second guide ring 15 is fused with the base of the second welding piece 6.

[0048] In this embodiment, the first guide ring 14 is adapted to the base of the first welding piece 5, and the second guide ring 15 is adapted to the base of the second welding piece 6, and the first guide ring 14 is set as a circular ring, and the second guide ring 15 is set as an arc-shaped ring, when the first guide ring 14 is fused with the base of the first welding piece 5, and the second guide ring 15 is fused with the base of the second welding piece 6, the tube of the engine intake pipe and the first welding piece 5 and the second welding piece 6 form an integral whole.

[0049] Further, in some embodiments, the welding the welding piece at the punched area of the support ring 1 comprises: The welding piece is welded at the punched area of the support ring 1 by the hot plate welding process, so that the welding piece is fused with the support ring 1.

[0050] In this embodiment, first, the base of the welding piece to be welded and the guide ring of the support ring 1 are attached, then the connection between the welding piece to be welded and the support ring 1 is heated to a molten state by using a heating plate, then the heating plate is removed, and the welding piece to be welded and the support ring 1 are fused by pressing the molten surface, and finally the welding piece and the support ring 1 are cooled and shaped to form a whole.

[0051] Further, referring to Figures 2-4 and Figure 6 In some embodiments, the thickness of the punched area of the support ring 1 is less than the thickness of the non-punched area of the support ring 1.

[0052] In this embodiment, because the periphery of the punched area is provided with the wedge-shaped engagement structure 11, the first guide ring 14 and the second guide ring 15, the blow molding material of the punched area is relatively less than the blow molding material of other non-punched areas, and the wall thickness of the punched area of the support ring 1 is relatively thin compared to the wall thickness of the non-punched area of the support ring 1, thereby reducing the difficulty of punching.

[0053] Further, referring to Figure 1 In some embodiments, the hardness of the two ends of the bellows 3 is less than the hardness of the body of the bellows 3.

[0054] In this embodiment, the hardness of the two ends of the bellows 3 is less than the hardness of the body of the bellows 3, so as to improve the flexibility of the connection between the bellows 3 and the support ring 1 and the connection between the bellows 3 and the second hose 4.

[0055] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0056] It should be noted that, in the present application, the relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0057] The foregoing is considered as illustrative only of the principles of the application. Numerous modifications and changes will readily occur to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Accordingly, the scope of the application is intended to be defined only as set forth in the claims.

Claims

1. An engine intake pipe characterized by, It comprises: A support ring (1), one end of which is blow molded with a first hose (2) for connecting the air inlet end of the engine, the other end of which is blow molded with a corrugated pipe (3) and a second hose (4) for connecting the air outlet end of the air filter, the corrugated pipe (3) connecting the second hose (4) and the support ring (1), and the support ring (1), the first hose (2) and the corrugated pipe (3) being fused into one body, Wherein the materials of the support ring (1), the first hose (2), the corrugated pipe (3) and the second hose (4) are mutually melted, the hardness of the support ring (1) is greater than that of the first hose (2), and the hardness of the support ring (1) is greater than that of the corrugated pipe (3); And a welding piece welded to the side surface of the support ring (1).

2. The engine intake pipe of claim 1, wherein The support ring (1), the first hose (2), the corrugated pipe (3) and the second hose (4) all adopt TPV material, the hardness of the support ring (1) is set to 75-85A, and the hardness of the corrugated pipe (3) is set to 50-60A.

3. A method of manufacturing an engine intake pipe, characterized by, It comprises the following steps: The support ring (1) is made by injection molding process; The support ring (1) is placed in the blow molding mold of the corrugated pipe (3), the first hose (2) is made at one end of the support ring (1) by blow molding process, and the corrugated pipe (3) and the second hose (4) are made at the other end of the support ring (1), so that the corrugated pipe (3) connects the second hose (4) and the support ring (1), and the support ring (1) and the first hose (2) and the corrugated pipe (3) are fused into one body to form the pipe body of the engine air inlet pipe, wherein the materials of the support ring (1), the first hose (2), the corrugated pipe (3) and the second hose (4) are mutually melted; The welding piece is welded on the pipe body of the engine air inlet pipe to form the engine air inlet pipe.

4. The production method according to claim 3, wherein The side surface of the support ring (1) is provided with a wedge-shaped occlusion structure (11), the wedge-shaped occlusion structure (11) comprises a plurality of wedge-shaped structures connected to each other, the outer peripheral distance between two adjacent wedge-shaped structures is less than the inner side distance, The support ring (1) is placed in the blow molding mold of the corrugated pipe (3), the first hose (2) is made at one end of the support ring (1) by blow molding process, and the corrugated pipe (3) and the second hose (4) are made at the other end of the support ring (1), also comprising: Fill the gap of the wedge-shaped occlusion structure (11) to make the wedge-shaped occlusion structure (11) and the filler fuse.

5. The production method according to claim 3, wherein The welding piece is welded on the pipe body of the engine air inlet pipe, comprising: After the pipe body of the engine air inlet pipe is cooled, the side surface of the support ring (1) is punched, and the welding piece is welded on the punched area of the support ring (1) to form the engine air inlet pipe.

6. The production method according to claim 5, wherein The welding piece is welded on the pipe body of the engine air inlet pipe, comprising: The side surface of the support ring (1) is punched to form a first punch hole (12) and a second punch hole (13), a first welding piece (5) is welded on the first punch hole (12) area of the support ring (1), and a second welding piece (6) is welded on the second punch hole (13) area of the support ring (1).

7. The production method according to claim 6, wherein The periphery of the first punching (12) is fixed with a first guide ring (14), and the periphery of the second punching (13) is surrounded by a second guide ring (15), The first welding member (5) is welded in the first punching (12) area of the support ring (1), and the second welding member (6) is welded in the second punching (13) area of the support ring (1), which comprises: The first welding member (5) is welded in the periphery of the first punching (12) of the support ring (1), and the second welding member (6) is welded in the periphery of the second punching (13) of the support ring (1), so that the first guide ring (14) is fused with the base of the first welding member (5), and the second guide ring (15) is fused with the base of the second welding member (6).

8. The production method according to claim 5, wherein The welding member is welded in the punching area of the support ring (1), which comprises: The welding member is welded in the punching area of the support ring (1) by a hot plate welding process, so that the welding member is fused with the support ring (1).

9. The production method according to claim 5, wherein The thickness of the punching area of the support ring (1) is less than the thickness of the non-punching area of the support ring (1).

10. The production method according to claim 3, wherein The hardness of the two ends of the bellows (3) is less than the hardness of the body of the bellows (3). The periphery of the first punching (12) is fixed with a first guide ring (14), and the periphery of the second punching (13) is surrounded by a second guide ring (15),

Images