Active sound absorption type hush pipe and use method thereof

Abstract

The invention relates to the technical field of hush pipes, and discloses an active sound absorption type hush pipe and a using method thereof.The active sound absorption type hush pipe comprises a pipe body, polyester felt is arranged on the outer side of the pipe body, a wire inlet is formed in the pipe body in the axis direction, an external wire is clamped into the pipe body through the wire inlet, and the polyester felt is arranged on the outer side of the pipe body in a surrounding mode and enters the pipe body through the wire inlet; the outer wall of the pipe body is integrally wrapped by the polyester felt, so that sound insulation wrapping is formed on the outer side of the pipe body, electric wires enter the pipe body through the wire inlet, the electric wires are protected and wrapped by the pipe body, and meanwhile, the polyester felt located in the pipe body can reduce friction between the electric wires in the using process, so that noise is reduced, and the service life of the electric wires is prolonged. And active sound absorption is carried out, so that noise reduction is realized.

Description

Technical Field

[0001] This invention relates to the field of silencer technology, and in particular to an active sound-absorbing silencer and its usage method. Background Technology

[0002] During the assembly of automotive wiring harnesses, corrugated conduits are needed to protect the wires from friction. Therefore, automotive wiring harnesses are usually placed inside corrugated conduits. During the use of corrugated conduits, the outer wall of the conduit will rub against automotive parts, producing impact noise. Alternatively, the corrugated conduit itself may stretch or contract during vehicle operation, causing some noise. When the noise is transmitted through the vehicle body to the interior, it can easily cause an unpleasant experience for the driver and passengers. Therefore, improvements are needed. Summary of the Invention

[0003] The main objective of this invention is to provide an active sound-absorbing silencer tube and its usage method, aiming to provide a silencer tube that can actively absorb noise.

[0004] To achieve the above objectives, the present invention proposes an active sound-absorbing silencer tube, comprising a tube body, a polyester felt disposed on the outer side of the tube body, and an inlet provided along the axial direction of the tube body. An external wire is inserted into the tube body through the inlet, and the polyester felt is disposed around the outer side of the tube body and enters the interior of the tube body through the inlet.

[0005] Specifically, an adhesive layer is provided on the side of the polyester felt that is connected to the tube body, and the polyester felt is bonded to the outside of the tube body through the adhesive layer.

[0006] Specifically, adhesive portions are provided at both ends of the polyester felt. When the polyester felt at both ends enters the tube through the inlet, the adhesive portions on the left and right sides of the polyester felt stick together to seal the inlet.

[0007] Specifically, the outer surface of the tube is corrugated to form spacer grooves that are spaced apart on the outside of the tube. The spacing between two adjacent spacer grooves is the same. The spacer grooves are used to assist the tube in turning or to facilitate the cutting of the tube.

[0008] Specifically, the tube body also includes a soundproof end cap, which has a wire hole and is fitted onto the end of the tube body. The soundproof end cap also has a wire clamping inlet corresponding to the wire inlet.

[0009] Specifically, the soundproof end cap includes a rigid part and a soft part, which are integrally formed, and the wire inlet is located on the soft part.

[0010] Specifically, a color layer is provided on the outer side of both the hard part and the soft part, and the color of the color layer on the hard part and the color layer on the soft part are different.

[0011] Specifically, the soundproof end cap is provided with soundproof cotton on the side facing the inside of the tube.

[0012] To achieve the above objectives, the present invention also proposes a method for using an active sound-absorbing silencer tube, comprising: S1, cutting the tube body to length according to usage requirements; S2, placing sound-insulating end caps on both ends of the tube body; S3, inserting an electric wire into the tube body through the inlet, and simultaneously inserting it into the wire passage hole of the sound-insulating end cap through the wire clamping inlet; S4, sealing the inlet by bonding the adhesive parts on the polyester felt together.

[0013] The technical solution of this invention uses polyester felt to completely cover the outer wall of the tube, so as to form a sound insulation wrap on the outside of the tube. The wire enters the tube through the inlet and is protected and wrapped by the tube. At the same time, the polyester felt inside the tube can reduce the friction between the wires during use, thereby reducing noise generation and actively absorbing sound, thus achieving noise reduction. Attached Figure Description

[0014] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention.

[0015] Figure 2 This is the second three-dimensional structural schematic diagram of the present invention.

[0016] Figure 3 This is a front view of the soundproof end cap of the present invention.

[0017] Figure 4 This is a cross-sectional view of the soundproof end cap of the present invention.

[0018] Figure 5 This is a comparative statistical chart showing the wear and sound absorption effects of the present invention.

[0019] The reference numerals in the attached drawings include: 10, tube body; 11, spacer groove; 12, wire inlet; 20, polyester felt; 21, adhesive part; 30, sound insulation end cap; 31, rigid part; 32, soft part; 33, wire clamping inlet; 34, wire through hole; 35, sound insulation cotton. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0023] like Figures 1 to 5 As shown, an active sound-absorbing silencer tube includes a tube body 10, with a polyester felt 20 disposed on the outer side of the tube body 10. An inlet 12 is provided along the axial direction of the tube body 10, through which an external wire is inserted into the tube body 10. The polyester felt 20 is surrounding the outer side of the tube body 10 and enters the interior of the tube body 10 through the inlet 12. The polyester felt 20 completely covers the outer wall of the tube body 10, forming a sound-insulating wrap around the outside of the tube body 10. The wire enters the tube body 10 through the inlet 12, and the tube body 10 protects and wraps the wire. Simultaneously, the polyester felt 20 inside the tube body 10 reduces friction between the wires during use, thereby reducing noise generation and actively absorbing sound, thus achieving noise reduction.

[0024] An adhesive layer is provided on the side of the polyester felt 20 that connects to the pipe body 10, and the polyester felt 20 is bonded to the outside of the pipe body 10 through the adhesive layer. In this embodiment, by providing an adhesive layer on one side of the polyester felt 20, the polyester felt 20 can be quickly bonded to the pipe body 10 through the adhesive layer, thereby improving the stability of the polyester felt 20 after bonding.

[0025] The polyester felt 20 has adhesive portions 21 at both its left and right ends. When the polyester felt 20 at both ends enters the tube 10 through the inlet 12, the adhesive portions 21 on both sides of the polyester felt 20 adhere to each other and seal the inlet 12. In this embodiment, by providing adhesive portions 21 on the polyester felt 20, when the external connecting wire enters the tube 10 through the inlet 12, the inlet 12 is sealed by the adhesive portions 21, thereby improving the stability of the connecting wire inside the tube 10. In the prior art, to install wires inside the conduit 10, the wires need to enter the conduit 10 through a through hole at the end of the conduit 10 when the wires are not connected. This can easily cause problems with the installation of the wires. This solution provides an inlet 12 on the conduit 10 that is axially oriented, so that the wires can enter the conduit 10 through the inlet 12 after they are laid. At the same time, the inlet 12 is sealed by the polyester felt 20 through the adhesive part 21, thereby improving the convenience and comfort of assembly and improving assembly efficiency.

[0026] The outer surface of the tube 10 is corrugated to form mutually spaced grooves 11 on the outer side of the tube 10. The spacing between two adjacent grooves 11 is the same. The grooves 11 are used to assist the tube 10 in turning or to facilitate the cutting of the tube 10. In this embodiment, corrugated grooves 11 are provided on the outer surface of the tube 10. The grooves 11 facilitate the forming of the tube 10 into a corrugated tube, which makes it easier to bend the tube 10 during the laying process. At the same time, after the tube 10 is rolled and shipped from the factory, the operator can easily cut the tube 10 through the grooves 11 so that the tube 10 meets the relevant usage length.

[0027] The tube body 10 also includes a soundproof end cap 30, which has a wire-passing hole 34. The soundproof end cap 30 covers the end of the tube body 10, and has a wire-clamping inlet 33 corresponding to the wire inlet 12. In this embodiment, the end of the tube body 10 is sealed by the soundproof end cap 30, and the soundproof end cap 30 has a wire-passing hole 34 and a wire-clamping inlet 33. The wire is clamped into the wire-passing hole 34 through the wire-clamping inlet 33, thereby improving the sound insulation effect of the tube body 10.

[0028] The soundproof end cap 30 includes a rigid part 31 and a flexible part 32, which are integrally formed. A wire-clamping inlet 33 is disposed on the flexible part 32. In this embodiment, the soundproof end cap 30 is provided with a rigid part 31 and a flexible part 32. By integrally forming the rigid part 31 and the flexible part 32, and by providing a wire-clamping inlet 33 on the flexible part 32, it is easier for the wire to enter the wire passage hole 34 through the wire-clamping inlet. After the wire enters, the flexible part 32 is reset, thereby realizing the connection of the wire entering the wire passage hole 34.

[0029] Both the rigid part 31 and the soft part 32 have color layers on their outer sides, and the color coating on the rigid part 31 and the color layer on the soft part 32 are different in color. In this embodiment, by providing different color layers on the rigid part 31 and the soft part 32 respectively, it is easier for users to quickly distinguish between the rigid part 31 and the soft part 32 of the soundproof end cap 30, thereby improving assembly efficiency.

[0030] A sound-insulating cotton 35 is provided on the side of the sound-insulating end cap 30 facing the inside of the tube body 10. In this embodiment, the sound-insulating cotton 35 is provided on the sound-insulating end cap 30 to improve the sound absorption effect of the sound-insulating end cap 30.

[0031] A method for using an active sound-absorbing silencer tube includes: S1, cutting the tube body 10 to the required length according to usage requirements; S2, covering both ends of the tube body 10 with sound-insulating end caps 30; S3, inserting an electric wire into the tube body 10 through the inlet 12 and simultaneously into the wire passage hole 34 of the sound-insulating end cap 30 through the wire clamping inlet 33; S4, sealing the inlet 12 by bonding the polyester felt 20 with the adhesive parts 21. When using the active sound-absorbing silencer tube, the tube body 10 is first cut to a certain length according to usage requirements, then the ends of the tube body 10 are covered with sound-insulating end caps 30 to form a sound-absorbing cavity inside the tube body 10. The electric wire is then inserted into the tube body 10 and the wire passage hole 34 through the inlet 12 and the wire clamping inlet 33, and then the inlet 12 is bonded to the polyester felt 20 with the adhesive parts 21, thus securing the electric wire within the tube body 10.

[0032] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An active sound-absorbing silencer tube, comprising a tube body, characterized in that: Polyester felt is provided on the outside of the tube body, and an inlet is provided along the axial direction of the tube body. External wires are inserted into the tube body through the inlet, and the polyester felt is arranged around the outside of the tube body and enters the inside of the tube body through the inlet.

2. The active sound-absorbing silencer tube according to claim 1, characterized in that: An adhesive layer is provided on the side of the polyester felt that is connected to the tube body, and the polyester felt is bonded to the outside of the tube body through the adhesive layer.

3. The active sound-absorbing silencer tube according to claim 1, characterized in that: The polyester felt is provided with adhesive parts at both the left and right ends. When the polyester felt at both the left and right ends enters the tube through the inlet, the adhesive parts on the left and right sides of the polyester felt stick together to seal the inlet.

4. The active sound-absorbing silencer tube according to claim 1, characterized in that: The outer surface of the tube is corrugated to form spaced grooves on the outside of the tube. The spacing between two adjacent spaced grooves is the same. The spaced grooves are used to assist the tube in turning or to facilitate the cutting of the tube.

5. The active sound-absorbing silencer tube according to claim 1, characterized in that: The tube body also includes a soundproof end cap, which has a wire hole. The soundproof end cap is attached to the end of the tube body and has a wire clamping inlet corresponding to the wire inlet.

6. The active sound-absorbing silencer tube according to claim 5, characterized in that: The soundproof end cap includes a rigid part and a soft part, which are integrally formed, and the wire inlet is located on the soft part.

7. The active sound-absorbing silencer tube according to claim 6, characterized in that: Both the hard part and the soft part have color layers on their outer sides, and the color of the color layer on the hard part and the color layer on the soft part are different.

8. The active sound-absorbing silencer tube according to claim 5, characterized in that: The soundproof end cap is provided with soundproof cotton on the side facing the inside of the tube.

9. A method of using an active sound-absorbing silencer according to any one of claims 1-8, characterized in that, include: S1. Cut the tube to the required length according to usage requirements; S2. Place the soundproof end caps on both ends of the pipe body; S3. Insert the wire into the conduit through the inlet and simultaneously into the wire passage hole of the soundproof end cap through the wire clamp inlet. S4. The inlet is sealed by bonding the adhesive parts on the polyester felt together.

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