CN218717197U

CN218717197U - Noise reduction tube structure

Info

Publication number: CN218717197U
Application number: CN202221670714.XU
Authority: CN
Inventors: 陈燕迪; 刘洋; 付杨; 冷凯; 雷森旺
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-03-24
Anticipated expiration: 2032-06-30

Abstract

The utility model provides a noise reduction tube structure, which comprises a noise reduction tube body, wherein the noise reduction tube body comprises a tube main body and an inlet part, the tube main body comprises a first tube section, and the first tube section is made of PET material; the inlet part comprises an inlet pipe section and a connecting part, the first end of the inlet pipe section forms an inlet of the noise reduction pipe body, and the second end of the inlet pipe section is connected with the connecting part; the connecting part is of a frame structure, and the frame structure and the first pipe section are molded through an insert molding process. The utility model discloses a noise reduction tube structure has solved the not good problem of noise reduction tube structure among the prior art.

Description

Noise reduction tube structure

Technical Field

The utility model relates to a vehicle technical field particularly, relates to a noise reduction tube structure.

Background

Currently, an air intake pipe of an automobile is generally made of a PET (polyethylene terephthalate) material and a woven pipe material.

The air inlet pipeline is characterized in that a PET material air inlet pipeline of the automobile consists of a front-end plastic part, a PET pipe and an air outlet-end plastic part, the plastic parts at two ends are connected with the PET pipe in an injection mode, glue is injected into glue injection grooves of the plastic parts at two ends to connect the PET pipeline, the glue is easily dissolved at high temperature, the plastic parts at two ends fall off due to viscosity loss, the noise reduction pipeline fails, the injection amount is not controlled, the drawing force of the PET pipe and the plastic parts connected at two ends is unstable, and the structural stability is poor; the PET pipe is divided into an upper half part and a lower half part which are welded into a main pipeline, the axial distance of the PET pipe is short, and a plastic part at the front end of the air inlet pipeline only plays the roles of diversion and water resistance and has no noise reduction effect; in addition, the PET pipe is of a single-layer common PET structure, so that the defects of low noise elimination amount and radiation of partial sound outside the pipe exist, and the noise reduction effect and the structural stability are poor.

In addition, the air inlet pipeline of the braided pipe material is formed by weaving cotton threads and polyester threads into a tubular shape on a framework of a steel wire and then carrying out processes of rubberizing, shearing, forming and the like, sound energy is converted into heat energy and mechanical energy to dissipate noise under the action of a microcavity in the pipe wall of the braided pipe, but a large part of sound energy is radiated outside the pipe, and the noise reduction effect is poor.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a noise reduction tube structure to solve the problem of the noise reduction effect of the noise reduction tube structure in the prior art.

In order to achieve the above object, the utility model provides a noise reduction tube structure, which comprises a noise reduction tube body, wherein the noise reduction tube body comprises a tube main body and an inlet part, the tube main body comprises a first tube section, and the first tube section is made of PET material; the inlet part comprises an inlet pipe section and a connecting part, the first end of the inlet pipe section forms an inlet of the noise reduction pipe body, and the second end of the inlet pipe section is connected with the connecting part; the connecting part is of a frame structure, and the frame structure and the first pipe section are molded through an insert molding process.

Furthermore, a part of pipe orifices at the second end of the inlet pipe section are connected with the connecting part, and the connecting part protrudes out of the inlet pipe section towards the direction far away from the inlet; the first tube section extends to the second end of the inlet tube section.

Furthermore, the pipe main body also comprises a second pipe section, the second pipe section is connected with one end, far away from the inlet part, of the first pipe section, the second pipe section comprises a first noise reduction layer, a second noise reduction layer and a third noise reduction layer which are sequentially arranged along the radial direction of the pipe main body, and the first noise reduction layer is positioned on one side, close to the interior of the pipe main body, of the second noise reduction layer; the first noise reduction layer and the third noise reduction layer are both made of PET materials, and the second noise reduction layer is made of sound absorption materials; the first pipe section and the third noise reduction layer are of an integrated structure.

Further, the second noise reduction layer is connected with the third noise reduction layer through ultrasonic welding; and/or the first noise reduction layer and the second noise reduction layer are connected through ultrasonic welding.

Further, the tube body comprises a first shell and a second shell, and the first shell and the second shell are connected to enclose an internal channel of the tube body; the first pipe section comprises a first housing portion and a second housing portion, the first housing comprising the first housing portion and the second housing comprising the second housing portion; the frame structure and the second housing portion are formed by an insert molding process.

Further, the first housing portion is connected with the connecting portion in a welded manner, and the first housing portion is connected with the second end of the inlet pipe section in a welded manner.

Furthermore, the first noise reduction layer is provided with a first end face and a second end face which are sequentially arranged along the radial direction of the pipe main body; the first noise reduction layer is provided with a plurality of communicating holes arranged at intervals, the first ends of the communicating holes extend to the first end face, and the second ends of the communicating holes extend to the second end face.

Furthermore, the connecting part is provided with an installation part for installing and fixing the noise reduction pipe body, and the installation part and the connecting part are integrally formed.

Further, the noise reduction pipe body further comprises: an outlet portion; the first end of the corrugated pipe is inserted with one end of the pipe main body, which is far away from the inlet part, and the corrugated pipe is clamped with the pipe main body through a buckle; the second end of the corrugated pipe is welded with the outlet part; one end of the outlet part, which is far away from the corrugated pipe, forms an outlet of the noise reduction pipe body.

Furthermore, a water outlet is arranged on the second shell part; the noise reduction tube structure further comprises: and the water baffle is arranged in the first pipe section and is connected with the first shell part, and the water baffle is used for guiding water to the water outlet.

The utility model discloses a noise reduction pipe body of noise reduction pipe structure includes pipe main part and inlet portion, and the pipe main part includes first pipeline section, and gas gets into in the pipe main part from the inlet portion, passes through first pipeline section, because first pipeline section is made by the PET material, the PET material has the effect of reinforcing sound transmission loss, therefore the noise that gas produced obtains reducing at first pipeline section; the import portion includes import pipeline section and connecting portion, the first end of import pipeline section forms the import of falling the noise pipe body, the second end and the connecting portion of import pipeline section are connected, connecting portion are frame construction, frame construction's setting provides the space for arranging of first pipeline section, the axial arrangement distance of first pipeline section has been prolonged, the layout area of first pipeline section has been increased, the not good problem of noise reduction of falling the noise pipe structure among the prior art has been solved, and frame construction and first pipeline section pass through insert molding technology shaping, the joint strength between first pipeline section and the import portion has been guaranteed.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows an overall schematic view of an embodiment of a noise reduction tube structure according to the present invention;

fig. 2 shows a schematic view of an angle at which the connecting portion of the noise reduction tube structure is connected to the second housing portion according to the present invention;

fig. 3 shows a schematic view of another angle at which the connecting portion of the noise reduction tube structure is connected to the second housing portion according to the present invention;

fig. 4 shows a schematic view of a water baffle of a noise reduction tube structure according to the present invention;

fig. 5 shows a schematic view of an inlet portion, a second housing portion and a bellows of a noise reduction tube arrangement according to the present invention;

figure 6 shows a schematic view of a bellows of a noise reduction tube structure according to the invention connected to a tube body;

fig. 7 shows a schematic view of a bellows of a noise reduction tube arrangement according to the present invention in connection with an outlet part;

fig. 8 shows a schematic layout of a first, a second and a third noise reduction layer of a noise reduction tube structure according to the present invention.

Wherein the figures include the following reference numerals:

10. a noise reduction tube body; 11. a tube body; 12. an inlet section; 13. a first tube section; 14. an inlet pipe section; 15. a connecting portion; 16. an inlet; 17. a second tube section; 171. a first noise reduction layer; 172. a second noise reduction layer; 173. a third noise reduction layer; 174. a communicating hole; 18. a mounting member; 19. an outlet; 21. a first housing; 22. a second housing; 23. a first housing portion; 24. a second housing portion; 25. an outlet portion; 26. a bellows; 27. a water discharge port; 30. a water baffle.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The utility model provides a noise reduction tube structure, which comprises a noise reduction tube body 10, please refer to fig. 1 to 8, wherein the noise reduction tube body 10 comprises a tube main body 11 and an inlet part 12, the tube main body 11 comprises a first tube section 13, and the first tube section 13 is made of PET material; the inlet part 12 comprises an inlet pipe section 14 and a connecting part 15, wherein a first end of the inlet pipe section 14 forms an inlet 16 of the noise reduction pipe body 10, and a second end of the inlet pipe section 14 is connected with the connecting part 15; the connecting portion 15 is a frame structure, and the frame structure and the first pipe section 13 are formed by an insert molding process.

The utility model discloses a noise reduction tube body 10 of noise reduction tube structure includes pipe main part 11 and inlet portion 12, and pipe main part 11 includes first pipeline section 13, and gaseous entering pipe main part 11 by inlet portion 12 is through first pipeline section 13, because first pipeline section 13 is made by the PET material, the PET material has the effect of reinforcing sound transmission loss, therefore the noise that gaseous produced obtains reducing at first pipeline section 13; the inlet part 12 includes inlet pipe section 14 and connecting portion 15, the first end of inlet pipe section 14 forms the import 16 of falling noise pipe body 10, the second end and the connecting portion 15 of inlet pipe section 14 are connected, connecting portion 15 is frame construction, frame construction's the arrangement that sets up to first pipe section 13 provides the space, the axial arrangement distance of first pipe section 13 has been prolonged, the layout area of first pipe section 13 has been increased, the not good problem of noise reduction effect of the structure of falling noise pipe among the prior art has been solved, and frame construction and first pipe section 13 pass through insert molding technology shaping, the joint strength between first pipe section 13 and inlet part 12 has been guaranteed.

In this embodiment, a part of the pipe orifice of the second end of the inlet pipe section 14 is connected with the connecting part 15, and the connecting part 15 is arranged to protrude from the inlet pipe section 14 in a direction away from the inlet 16; the first pipe section 13 extends to the second end of the inlet pipe section 14.

In practical implementation, such an arrangement increases the extension area of the first pipe section 13, and due to the protruding arrangement of the connecting portion 15, the first pipe section 13 extends from the end of the connecting portion 15 far away from the inlet pipe section 14 to the second end of the inlet pipe section 14, so that the noise generated by the gas is sufficiently consumed in the first pipe section 13.

In this embodiment, the pipe body 11 further includes a second pipe segment 17, the second pipe segment 17 is connected to an end of the first pipe segment 13 away from the inlet portion 12, the second pipe segment 17 includes a first noise reduction layer 171, a second noise reduction layer 172 and a third noise reduction layer 173, which are sequentially arranged along a radial direction of the pipe body 11, and the first noise reduction layer 171 is located on a side of the second noise reduction layer 172 close to the inside of the pipe body 11; the first noise reduction layer 171 and the third noise reduction layer 173 are both made of a PET material, and the second noise reduction layer 172 is made of a sound absorbing material; the first tube section 13 and the third noise reduction layer 173 are of unitary construction.

In specific implementation, the first noise reduction layer 171, the second noise reduction layer 172 and the third noise reduction layer 173 are sequentially arranged along the pipe body 11, so that loss in a noise transmission process is increased, the first noise reduction layer 171 and the third noise reduction layer 173 are made of a PET material, and the second noise reduction layer 172 is made of a sound absorption material, so that the effect of targeted noise absorption is achieved. The overall noise reduction of the second tube section 17 is thus improved.

Specifically, the sound absorbing material is sound absorbing cotton, the sound absorbing cotton has pertinence, and meanwhile, the sound absorbing material has a strong sound insulation effect, and not only has the broadband noise elimination effect of a resistive muffler, but also has the targeted noise elimination effect of the resistive muffler.

In the present embodiment, the second noise reduction layer 172 and the third noise reduction layer 173 are connected by ultrasonic welding; and/or the first noise reduction layer 171 and the second noise reduction layer 172 are joined by ultrasonic welding. Such a welding connection may enable the second noise reduction layer 172 to be connected with the third noise reduction layer 173, and the first noise reduction layer 171 to be connected with the second noise reduction layer 172 more tightly, so as to avoid noise leakage.

In the present embodiment, the tube body 11 includes a first housing 21 and a second housing 22, the first housing 21 and the second housing 22 being connected to enclose an inner passage of the tube body 11; the first pipe section 13 comprises a first housing part 23 and a second housing part 24, the first housing 21 comprising the first housing part 23 and the second housing 22 comprising the second housing part 24; the frame structure is formed with the second housing portion 24 by an insert molding process.

During specific implementation, the frame structure and the second housing portion 24 are molded through an insert molding process, so that the frame structure can be fused with the second housing portion 24, and the noise diffusion caused by a gap between the frame structure and the second housing portion 24 is avoided.

Specifically, the first housing 21 and the second housing 22 are welded. Alternatively, the first case 21 and the second case 22 are connected by vibration welding.

In this embodiment, the first housing portion 23 is welded to the connecting portion 15, and the first housing portion 23 is welded to the second end of the inlet section 14. The welding connection mode enables the first housing part 23 and the connecting part 15 and the first housing part 23 and the inlet pipe section 14 to be tightly connected, and therefore noise leakage is avoided.

Specifically, the first housing portion 23 is connected to the connection portion 15 by vibration welding.

In the present embodiment, the first noise reduction layer 171 has a first end face and a second end face arranged in this order in the radial direction of the tube main body 11; the first noise reduction layer 171 is provided with a plurality of communication holes 174 arranged at intervals, a first end of the communication hole 174 extends to the first end surface, and a second end of the communication hole 174 extends to the second end surface. The communication holes 174 enable the first noise reduction layer 171 to be a resonance sound absorption structure with low sound quality and high sound resistance, and have a better sound absorption effect.

In a specific implementation, as shown in fig. 8, noise enters the first noise reduction layer 171, and since the first noise reduction layer 171 has many communication holes 174, a part of noise can enter the second noise reduction layer 172 from the communication holes 174, and another part of noise enters microscopic holes of the first noise reduction layer 171, so that the noise is converted into heat energy to be consumed; when noise enters the second noise reduction layer 172, because the second noise reduction layer 172 is made of sound absorption cotton, the sound absorption cotton can enable the sound loss or the transmission loss to be maximum according to a certain frequency, the sound absorption cotton can be selected in a targeted manner, the first noise reduction layer 171 and the second noise reduction layer 172 are matched with each other to be equivalent to an impedance composite muffler, the noise elimination principle is that different through holes 174 with different perforation rates and different cavity depths with different plate thicknesses are selected, and the frequency spectrum performance can be controlled by matching with the selection of a sound absorption cotton material, so that a good noise elimination effect can be obtained in a required frequency range; when a small portion of the noise passes through the second noise reduction layer 172 and into the third noise reduction layer 173, the noise is converted into heat energy and consumed, and only a very small portion of the noise is radiated from the second pipe section 17. Also, when noise propagates in different media, the acoustic impedance changes, which is also a loss for noise, and the noise makes 4 transitions in the second pipe section 17, resulting in a large amount of loss.

In the present embodiment, the connecting portion 15 is provided with a mounting member 18 for mounting and fixing the noise reduction pipe body 10, and the mounting member 18 is integrally formed with the connecting portion 15. The integral formation enhances the structural strength of the connecting portion 15, and avoids the situation that the mounting member 18 falls off from the connecting portion 15.

In this embodiment, the noise reduction pipe body 10 further includes: an outlet portion 25; the first end of the corrugated pipe 26 is inserted into one end, far away from the inlet part 12, of the pipe main body 11, and the corrugated pipe 26 is clamped with the pipe main body 11 through a buckle; the second end of the bellows 26 is welded to the outlet 25; the end of the outlet portion 25 remote from the bellows 26 forms the outlet 19 of the noise reduction tube body 10.

In specific implementation, the corrugated pipe 26 is inserted into the inlet part 12, so that a gap is avoided, and the corrugated pipe 26 is connected with the inlet part 12 more tightly through clamping of the buckle, so that noise leakage is avoided; the second end of the bellows 26 is welded to the outlet portion 25, again increasing the tightness of the connection.

Specifically, the second end of the bellows 26 is hot plate welded to the outlet portion 25.

In the present embodiment, the second housing portion 24 is provided with a drain port 27; the noise reduction tube structure further comprises: a water deflector 30 disposed within the first pipe section 13 and connected to the first housing portion 23, the water deflector 30 for directing water toward the drain opening 27.

Specifically, the water guard 30 is connected to the first housing portion 23 by vibration friction welding (i.e., vibration welding), and the welding strength is stable and the connection is secure.

The utility model discloses have following innovation point:

the most adopted connection processes of the noise reduction tube structure are vibration welding processes, full-welding effects are achieved, welding strength is controlled through equipment parameters and a vibration die, the welding strength is stable, and connection is firm; the first noise reduction layer 171 and the third noise reduction layer 173 are made of PET materials, and the second noise reduction layer 172 is made of sound absorption cotton, so that the transmission loss of the whole pipeline is greatly improved; the frame structure and the second housing portion 24 are formed by insert molding, and the frame structure and the second housing portion are firmly connected together, and the connection strength reaches over 500N.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A noise reduction tube structure comprising a noise reduction tube body (10), characterized in that the noise reduction tube body (10) comprises a tube main body (11) and an inlet section (12), the tube main body (11) comprising a first tube section (13), the first tube section (13) being made of PET material; the inlet part (12) comprises an inlet pipe section (14) and a connecting part (15), a first end of the inlet pipe section (14) forms an inlet (16) of the noise reduction pipe body (10), and a second end of the inlet pipe section (14) is connected with the connecting part (15); the connecting part (15) is of a frame structure, and the frame structure and the first pipe section (13) are formed through an insert molding process.

2. A noise reduction tube arrangement according to claim 1, wherein a partial nozzle of the second end of the inlet tube section (14) is connected to the connection portion (15), the connection portion (15) being arranged protruding from the inlet tube section (14) in a direction away from the inlet opening (16); the first pipe section (13) extends to a second end of the inlet pipe section (14).

3. The noise reduction tube structure according to claim 1, wherein the tube body (11) further comprises a second tube segment (17), the second tube segment (17) is connected with one end of the first tube segment (13) far away from the inlet portion (12), the second tube segment (17) comprises a first noise reduction layer (171), a second noise reduction layer (172) and a third noise reduction layer (173) which are arranged in sequence along the radial direction of the tube body (11), and the first noise reduction layer (171) is positioned on one side of the second noise reduction layer (172) close to the inside of the tube body (11); the first noise reduction layer (171) and the third noise reduction layer (173) are both made of a PET material, the second noise reduction layer (172) is made of a sound absorbing material; the first pipe section (13) and the third noise reduction layer (173) are of an integral structure.

4. The noise reduction tube structure according to claim 3, wherein the second noise reduction layer (172) and the third noise reduction layer (173) are connected by ultrasonic welding; and/or the first noise reduction layer (171) and the second noise reduction layer (172) are connected by ultrasonic welding.

5. A noise reduction tube arrangement according to claim 3, characterized in that the tube body (11) comprises a first shell (21) and a second shell (22), the first shell (21) and the second shell (22) being connected to enclose an inner channel of the tube body (11); the first pipe section (13) comprises a first housing part (23) and a second housing part (24), the first housing (21) comprises the first housing part (23), the second housing (22) comprises the second housing part (24); the frame structure and the second housing portion (24) are formed by an insert molding process.

6. The noise reduction tube arrangement according to claim 5, characterized in that the first housing part (23) is welded to the connection portion (15), the first housing part (23) being welded to the second end of the inlet tube section (14).

7. The noise reduction tube structure according to any of claims 3 to 6, characterized in that the first noise reduction layer (171) has a first end face and a second end face arranged in sequence in a radial direction of the tube body (11); a plurality of communication holes (174) are arranged at intervals on the first noise reduction layer (171), first ends of the communication holes (174) extend to the first end face, and second ends of the communication holes (174) extend to the second end face.

8. A noise reduction tube structure according to any of claims 1-6, characterized in that the connecting portion (15) is provided with a mounting part (18) for mounting and fixing the noise reduction tube body (10), the mounting part (18) being integrally formed with the connecting portion (15).

9. A noise reduction tube structure according to any of claims 1-6, characterized in that the noise reduction tube body (10) further comprises:

an outlet portion (25);

the first end of the corrugated pipe (26) is inserted into one end, far away from the inlet part (12), of the pipe main body (11), and the corrugated pipe (26) is clamped with the pipe main body (11) through a buckle; the second end of the corrugated pipe (26) is connected with the outlet part (25) in a welding way; one end of the outlet part (25) far away from the corrugated pipe (26) forms an outlet (19) of the noise reduction pipe body (10).

10. A noise reduction tube arrangement according to claim 5 or 6, characterized in that the second housing part (24) is provided with a drain opening (27); the noise reduction tube structure further comprises:

a water deflector (30) disposed within the first tube section (13) and connected to the first housing portion (23), the water deflector (30) for directing water to the drain opening (27).