Wire harness fixing support and vehicle

By designing a wire harness fixing bracket and a detachable sub-bracket module, the number of fixing holes for the sound insulation pad is reduced. Combined with the sound-absorbing cover and sound-absorbing cavity structure, the problem of poor sound insulation effect of the sound insulation pad is solved, and the sound insulation area is increased and the sound insulation effect is improved.

CN223972518UActive Publication Date: 2026-03-06GREAT WALL MOTOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-08
Publication Date
2026-03-06

AI Technical Summary

Technical Problem

In existing technologies, multiple wiring harness fixing holes need to be opened on the vehicle sound insulation pad, which reduces the sound insulation area, causes sound to leak from the gaps between the holes, and results in poor sound insulation effect.

Method used

The system employs a wire harness fixing bracket, which includes a bracket body and a detachable sub-bracket module. The wire harness is fixed by snap-fit, reducing the number of fixing holes on the sound insulation pad. The sound-absorbing cover and sound-absorbing cavity structure are used to improve the sound insulation effect.

Benefits of technology

Increasing the sound insulation area of ​​the sound insulation pad improves the sound insulation effect, adapts to the wiring harness quantity requirements of different vehicle models, and enhances the overall sound insulation performance of the vehicle.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a wire harness fixing support and a vehicle, and the wire harness fixing support comprises a support main body which is suitable for fixing a wire harness and is provided with a plurality of first clamping parts; and the sub-bracket modules are suitable for fixing the wire harness, the sub-bracket modules are provided with second clamping parts, and the second clamping part of at least one sub-bracket module is detachably clamped and fixed with at least one of the plurality of first clamping parts. Therefore, only at least one end of the bracket main body is suitable for penetrating through the sound insulation pad on the floor and is connected with the floor, so that the number of fixing holes which are formed in the sound insulation pad of the vehicle and are suitable for fixing the wiring harness can be reduced, the sound insulation area of the sound insulation pad can be increased, and the sound insulation performance of the sound insulation pad can be improved; according to the wire harness fixing support, the at least one sub-support module is detachably clamped and fixed to the support body, clamping and fixing of the sub-support modules and the support body can be adaptively combined according to the number of wire harnesses, and therefore the wire harness fixing support can meet the use requirements of different vehicle types.
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Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a wiring harness fixing bracket and a vehicle. Background Technology

[0002] With the development of technology and the improvement of people's living standards, vehicles have become an indispensable means of transportation. The sound insulation of a vehicle has become one of the important factors affecting the driving and riding experience of drivers and passengers.

[0003] In existing technology, wire harness fixing holes need to be made on the sound insulation pad to fix the wire harnesses passing through the sound insulation pad. Since there are a large number of wire harnesses passing through the sound insulation pad, multiple wire harness fixing holes need to be set on the sound insulation pad accordingly. This will reduce the effective sound insulation area of ​​the sound insulation pad, and sound will leak from the gap between the wire harness fixing holes and the wire harnesses, resulting in poor sound insulation effect of the sound insulation pad. Utility Model Content

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a wire harness fixing bracket that can ensure the effective sound insulation area of ​​the sound insulation pad and improve the sound insulation effect of the sound insulation pad.

[0005] This utility model further proposes a vehicle.

[0006] The wire harness fixing bracket according to this utility model includes: a bracket body, at least one end of which is adapted to pass through a sound insulation pad on the floor and is connected to the floor; the bracket body is provided with a wire harness fixing hole adapted to fix a wire harness; and the bracket body is provided with a plurality of first snap-fit ​​portions; a sub-bracket module adapted to fix a wire harness; the sub-bracket module is provided with a second snap-fit ​​portion; there is at least one sub-bracket module; and the second snap-fit ​​portion of at least one sub-bracket module is detachably snap-fitted and fixed to at least one of the plurality of first snap-fit ​​portions.

[0007] Therefore, by adapting at least one end of the bracket body to pass through the sound insulation pad on the floor and connecting it to the floor, the number of fixing holes suitable for fixing the wire harness in the vehicle's sound insulation pad can be reduced, the sound insulation area of ​​the sound insulation pad can be increased, and the sound insulation performance of the sound insulation pad can be improved. Furthermore, by detachably snapping and fixing at least one sub-bracket module to the bracket body, the snapping and fixing of the sub-bracket module and the bracket body can be adaptively combined according to the number of wire harnesses, so that the wire harness fixing bracket can meet the usage requirements of different vehicle models.

[0008] In some examples of this utility model, one of the first snap-fit ​​portion and the second snap-fit ​​portion is a snap-fit ​​groove, and the other is a snap-fit ​​protrusion, wherein the snap-fit ​​groove and the snap-fit ​​protrusion are detachably snap-fitted and fixed.

[0009] In some examples of this utility model, the wire harness fixing bracket further includes a sound-absorbing cover, at least one end of the bracket body is provided with a through hole, the sound-absorbing cover is covered over at least one end of the bracket body and is adapted to be connected to a connecting post passing through the through hole on the floor.

[0010] In some examples of this utility model, the sound-absorbing cover is provided with a threaded connection hole, which is adapted to be threadedly connected to a connecting post on the floor.

[0011] In some examples of this utility model, at least one end of the support body is provided with a third snap-fit ​​portion, and the lower side of the sound-absorbing cover is provided with a fourth snap-fit ​​portion. The third snap-fit ​​portion and the fourth snap-fit ​​portion are snapped together so that the lower side of the sound-absorbing cover fits against the support body.

[0012] In some examples of this utility model, the sound-absorbing cover has a sound-absorbing cavity inside, and a sound-absorbing port is provided on the lower side of the sound-absorbing cavity. The sound-absorbing port is connected to the through hole.

[0013] In some examples of this utility model, the silencing cavity is provided with resonant silencing particles and a composite material sound-absorbing layer.

[0014] In some examples of this invention, the composite material sound-absorbing layer is located closer to the sound-absorbing port than the resonant sound-absorbing particles.

[0015] In some examples of this utility model, the sound-absorbing layer of the composite material is sealed with a non-woven support fabric on the side facing the sound-absorbing port.

[0016] The vehicle according to an embodiment of the present invention includes: a floor; a sound insulation pad disposed on the floor, the sound insulation pad having at least one through hole; and the aforementioned wiring harness fixing bracket, at least one end of the wiring harness fixing bracket passing through the through hole and connected to the floor.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1This is a partial sectional view of a vehicle according to an embodiment of the present utility model;

[0020] Figure 2 This is a partial sectional view of a vehicle according to an embodiment of the present utility model;

[0021] Figure 3 This is a partial sectional view of the wire harness fixing bracket according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the support body according to an embodiment of the present utility model.

[0023] Figure label:

[0024] 100. Vehicles;

[0025] 10. Floor; 11. Connecting column;

[0026] 20. Sound insulation pad; 21. Perforation;

[0027] 30. Wire harness fixing bracket; 31. Bracket body; 311. First snap-fit ​​part; 312. Through hole; 313. Third snap-fit ​​part; 32. Sub-bracket module; 321. Second snap-fit ​​part; 33. Wire harness fixing hole;

[0028] 40. Sound-absorbing cover; 41. Threaded connection hole; 42. Fourth snap-fit ​​part; 43. Sound-absorbing cavity; 44. Resonant sound-absorbing particles; 45. Composite material sound-absorbing layer; 46. Non-woven support fabric. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0030] The following is for reference. Figures 1-4 The wire harness fixing bracket 30 according to an embodiment of the present utility model is described. The wire harness fixing bracket 30 can be applied to a vehicle 100.

[0031] Combination Figures 1-4 As shown, the wire harness fixing bracket 30 according to this utility model can mainly include: a bracket body 31 and a sub-bracket module 32, wherein at least one end of the bracket body 31 is adapted to pass through the sound insulation pad 20 on the floor 10 and is connected to the floor 10, the bracket body 31 is adapted to fix the wire harness, and the bracket body 31 is provided with a plurality of first snap-fit ​​parts 311, the sub-bracket module 32 is adapted to fix the wire harness, the sub-bracket module 32 is provided with a second snap-fit ​​part 321, the sub-bracket module 32 is at least one, and the second snap-fit ​​part 321 of at least one sub-bracket module 32 is detachably snap-fitted and fixed to at least one of the plurality of first snap-fit ​​parts 311.

[0032] Specifically, by adapting at least one end of the bracket body 31 to pass through and connect to the sound insulation pad 20 on the floor 10, and by providing multiple wire harness fixing holes 33 on the bracket body 31, the wire harness fixing holes 33 are adapted to fix wire harnesses. The wire harness fixing holes 33 on the bracket body 31 can be used to fix the wire harnesses on the vehicle 100, ensuring the normal wiring of the vehicle 100. By adapting at least one end of the bracket body 31 to pass through and connect to the sound insulation pad 20 on the floor 10, the number of openings on the sound insulation pad 20 can be reduced. That is, there is no need to open connection holes on the sound insulation pad 20 corresponding to multiple wire harnesses. The sound insulation pad 20 can pass through and connect to the floor 10 at most two ends of the bracket body 31. At most two through holes 21 are opened on the sound insulation pad 20 for the two ends of the bracket body 31 to pass through. This can effectively reduce the number of openings on the sound insulation pad 20, and increase the sound insulation area of ​​the sound insulation pad 20 without increasing the volume and space occupied by the sound insulation pad 20, thereby improving the sound insulation effect of the sound insulation pad 20.

[0033] Furthermore, the wire harness fixing hole 33 is suitable for fixing the wire harness. The bracket body 31 is provided with a plurality of first snap-fit ​​parts 311. The sub-bracket module 32 is provided with wire harness fixing holes 33 to be suitable for fixing the wire harness. The sub-bracket module 32 is provided with a second snap-fit ​​part 321. There is at least one sub-bracket module 32. The second snap-fit ​​part 321 of at least one sub-bracket module 32 is detachably snap-fitted and fixed to at least one of the plurality of first snap-fit ​​parts 311. Since different vehicle models have different numbers of wire harnesses, the bracket body 31 of the wire harness fixing bracket 30 of this utility model will not be provided with too many wire harness fixing holes 33. This can ensure that the size of the bracket body 31 itself is not too large. Instead, the first snap-fit ​​parts 311 are provided on the bracket body 31. Furthermore, a second snap-fit ​​portion 321 is provided on the sub-bracket module 32. When the number of wire harness fixing holes 33 on the bracket body 31 cannot meet the wiring harness installation requirements of the vehicle 100, the sub-bracket module 32 can be detachably connected to the bracket body 31 by the detachable snap-fit ​​portion 311 and the second snap-fit ​​portion 321. Since the sub-bracket module 32 is also provided with wire harness fixing holes 33, and the number of sub-bracket modules 32 is at least one, the number of sub-bracket modules 32 connected to the bracket body 31 can be selectively set according to the different number of wire harness fixing requirements of different vehicle models. Thus, the wire harness fixing bracket 30 can meet the needs of different vehicle models without occupying unnecessary space on the vehicle 100.

[0034] It should be noted that in some embodiments of this utility model, each sub-support module 32 is provided with a wire harness fixing hole 33, while in other embodiments of this utility model, each sub-support module 32 is provided with multiple wire harness fixing holes 33, which can be selectively set according to production process requirements.

[0035] Therefore, by providing wire harness fixing holes 33 on the bracket body 31 to fix the wire harness, and by only adapting at least one end of the bracket body 31 to pass through and connect to the sound insulation pad 20 on the floor 10, the number of holes for fixing the wire harness in the sound insulation pad 20 of the vehicle 100 can be reduced, the sound insulation area of ​​the sound insulation pad 20 can be increased, and the sound insulation performance of the sound insulation pad 20 can be improved. Furthermore, by providing wire harness fixing holes 33 on the sub-bracket module 32, at least one sub-bracket module 32 can be detachably snapped and fixed to the bracket body 31. The snapping and fixing of the sub-bracket module 32 and the bracket body 31 can be adaptively combined according to the number of wire harnesses, so that the wire harness fixing bracket 30 can meet the usage requirements of different vehicle models.

[0036] Combination Figure 3 and Figure 4 As shown, one of the first snap-fit ​​portion 311 and the second snap-fit ​​portion 321 is a snap-fit ​​groove, and the other is a snap-fit ​​protrusion. The snap-fit ​​groove and the snap-fit ​​protrusion are detachably snap-fitted and fixed. Specifically, by setting one of the first snap-fit ​​portion 311 and the second snap-fit ​​portion 321 as a snap-fit ​​protrusion and the other as a snap-fit ​​groove, the snap-fit ​​engagement of the first snap-fit ​​portion 311 and the second snap-fit ​​portion 321 can not only be made more stable and secure, but also the difficulty of snap-fit ​​engagement of the first snap-fit ​​portion 311 and the second snap-fit ​​portion 321 can be reduced.

[0037] Combination Figure 1 and Figure 2 As shown, the wiring harness fixing bracket 30 may also mainly include a sound-absorbing cover 40. At least one end of the bracket body 31 is provided with a through hole 312. The sound-absorbing cover 40 is covered over at least one end of the bracket body 31 and connected to a connecting post 11 adapted to pass through the through hole 312 on the floor 10. Specifically, by covering at least one end of the bracket body 31 and connecting to the connecting post 11 adapted to pass through the through hole 312 on the floor 10, the sound-absorbing cover can be stably and firmly set on the bracket body 31, ensuring the structural stability of the wiring harness fixing bracket 30. Moreover, the sound-absorbing cover can absorb and eliminate noise leaking from the through hole 312 at at least one end of the bracket body 31. This further improves the sound insulation effect of the vehicle 100 while ensuring that the sound insulation pad 20 passes through the bracket body 31 and is stably connected to the floor 10.

[0038] Combination Figure 2As shown, the sound-absorbing cover 40 is provided with a threaded connection hole 41, which is suitable for threaded connection with the connecting post 11 on the floor 10. Specifically, by providing the threaded connection hole 41 on the sound-absorbing cover 40, during the installation of the sound-absorbing cover 40, the external thread on the outside of the connecting post 11 on the floor 10 can be threadedly engaged with the internal thread on the inner wall of the threaded connection hole 41. The sound-absorbing cover 40 can be rotated to make the connecting post 11 threadedly connected and fixed to the sound-absorbing cover 40. This not only reduces the difficulty of connecting and fixing the sound-absorbing cover 40, but also improves the stability and firmness of the installation of the sound-absorbing cover 40.

[0039] Combination Figure 2 As shown, at least one end of the support body 31 is provided with a third snap-fit ​​part 313, and the lower side of the sound-absorbing cover 40 is provided with a fourth snap-fit ​​part 42. The third snap-fit ​​part 313 and the fourth snap-fit ​​part 42 are snap-fitted together so that the lower side of the sound-absorbing cover 40 is in contact with the support body 31. Specifically, by providing a third snap-fit ​​part 313 on the support body 31 and a fourth snap-fit ​​part 42 on the lower side of the sound-absorbing cover 40, the third snap-fit ​​part 313 and the fourth snap-fit ​​part 42 are snapped together, so that the lower side of the sound-absorbing cover 40 fits snugly against the support body 31. This arrangement not only further improves the stability and firmness of the installation of the sound-absorbing cover 40, but also makes the force on the sound-absorbing cover 40 more even. On the other hand, it makes the lower side of the sound-absorbing cover 40 fit more tightly against the support body 31, preventing gaps from forming between the lower side of the sound-absorbing cover 40 and the support body 31, which would cause noise from the sound insulation pad 20 to flow out to the outside through the gaps between the lower side of the sound-absorbing cover 40 and the support body 31. This further improves the sound absorption performance of the sound-absorbing cover 40.

[0040] In some embodiments of this utility model, one of the third snap-fit ​​portion 313 and the fourth snap-fit ​​portion 42 is a snap-fit ​​protrusion and the other is a snap-fit ​​groove. By extending the snap-fit ​​protrusion into the snap-fit ​​groove and making the snap-fit ​​protrusion engage with the snap-fit ​​groove, not only can the stability and firmness of the snap-fit ​​engagement of the third snap-fit ​​portion 313 and the fourth snap-fit ​​portion 42 be further improved, but also the fit between the lower side of the sound-absorbing cover 40 and the bracket body 31 can be made tighter after the third snap-fit ​​portion 313 and the fourth snap-fit ​​portion 42 are engaged.

[0041] Combination Figure 1 and Figure 2As shown, the sound-absorbing cover 40 has a sound-absorbing cavity 43 inside, and a sound-absorbing port is provided on the lower side of the sound-absorbing cavity 43. The sound-absorbing port is correspondingly connected to the through hole 312. Specifically, by providing a sound-absorbing cavity 43 inside the sound-absorbing cover 40 and providing a sound-absorbing port on the lower side of the sound-absorbing cavity 43, and aligning the sound-absorbing port with the through hole 312, noise enters the sound-absorbing port from the through hole 312 and then enters the sound-absorbing cavity 43 from the sound-absorbing port. It should be noted that the sound-absorbing port of the sound-absorbing cover 40 is relatively small, while the sound-absorbing cavity 43 is relatively large. This conforms to the characteristics of a Helmholtz resonant cavity and can resonate to absorb noise.

[0042] Combination Figure 1 and Figure 2 As shown, the anechoic cavity 43 is provided with resonant noise-absorbing particles 44 and a composite material sound-absorbing layer 45. Specifically, the composite material sound-absorbing layer 45 can absorb noise, and the resonant noise-absorbing particles 44 can eliminate noise through resonance. By providing the resonant noise-absorbing particles 44 and the composite material sound-absorbing layer 45 in the anechoic cavity 43, noise can be eliminated from different noise-absorbing angles, which can further improve the sound absorption effect of the sound-absorbing cover 40.

[0043] Combination Figure 1 and Figure 2 As shown, the composite material sound-absorbing layer 45 is closer to the sound-absorbing opening than the resonant sound-absorbing particles 44. Specifically, the composite material sound-absorbing layer 45 is positioned closer to the sound-absorbing opening than the resonant sound-absorbing particles 44. After noise enters the sound-absorbing cavity 43 from the sound-absorbing opening, it first enters the composite material sound-absorbing layer 45, and then enters the sound-absorbing cavity 43. In some embodiments of this utility model, the composite material sound-absorbing layer 45 can be a layer of polypropylene and polyethylene terephthalate composite fiber material, which can absorb and consume high-frequency noise. The resonant sound-absorbing particles 44 include a mixture of sponge particles and rubber particles. When low-to-medium noise is transmitted to the resonant sound-absorbing particles 44, the energy excitation causes the mixed particles to vibrate nonlinearly. The irregular vibration of the mixed particles consumes the energy of low-to-medium frequencies, thereby reducing the sound pressure level of the noise. At the same time, the mixture of sponge particles and rubber particles can also prevent abnormal noise from being generated by nonlinear vibration.

[0044] Furthermore, this configuration allows different materials to eliminate noise at different frequencies, making the elimination of noise at different frequencies more targeted and thus improving the noise elimination effect of the sound-absorbing cover 40, which in turn enhances the reliability of the sound-absorbing cover 40.

[0045] Combination Figure 1 and Figure 2As shown, a non-woven support fabric 46 is sealed on the side of the composite sound-absorbing layer 45 facing the silencing opening. Specifically, by sealing the side of the composite sound-absorbing layer 45 facing the silencing opening with a non-woven support fabric 46, the non-woven support fabric 46 can support the resonant sound-absorbing particles 44 and the composite sound-absorbing layer 45 inside the silencing cavity 43, preventing the resonant sound-absorbing particles 44 and the composite sound-absorbing layer 45 from falling from the silencing opening to the outside of the silencing cavity 43. The non-woven support fabric 46 will not obstruct noise from entering the silencing cavity 43, thus ensuring the sound absorption performance of the sound-absorbing cover 40.

[0046] The vehicle 100 according to this utility model mainly includes: a floor 10, a sound insulation pad 20, and the aforementioned wiring harness fixing bracket 30. The sound insulation pad 20 is disposed on the floor 10 and has at least one through hole 21. At least one end of the wiring harness fixing bracket 30 is provided with a through hole 312 and connected to the floor 10. This arrangement not only ensures that the wiring harness on the vehicle 100 is fixed stably and reliably, but also prevents the sound insulation pad 20 from having too many openings, which would result in poor sound insulation of the vehicle 100. This can further improve the structural performance of the vehicle 100 and enhance the user's experience with the vehicle 100.

[0047] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0049] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A harness fixing support characterized by comprising: It comprises: a support body (31), at least one end of the support body (31) is adapted to pass through a sound insulation pad (20) on a floor (10) and is connected with the floor (10), a wire harness fixing hole (33) is arranged on the support body (31), the wire harness fixing hole (33) is adapted to fix a wire harness, and a plurality of first clamping portions (311) are arranged on the support body (31); a sub-support module (32), the sub-support module (32) is adapted to fix a wire harness, the sub-support module (32) is provided with a second clamping portion (321), and the sub-support module (32) is at least one, and the second clamping portion (321) of at least one of the sub-support module (32) is detachably clamped and fixed with at least one of the plurality of first clamping portions (311).

2. The wire harness fixing bracket according to claim 1, characterized by One of the first clamping portion (311) and the second clamping portion (321) is a clamping groove, and the other is a clamping protrusion, and the clamping groove and the clamping protrusion are detachably clamped and fixed.

3. The wire harness mounting bracket of claim 2, wherein, It also comprises a sound-absorbing cover (40), at least one end of the support body (31) is provided with a through hole (312), and the sound-absorbing cover (40) is arranged on at least one end of the support body (31) and is adapted to be connected with a connecting column (11) passing through the through hole (312) on the floor (10).

4. The wire harness fixing bracket according to claim 3, characterized by The sound-absorbing cover (40) is provided with a threaded connection hole (41), and the threaded connection hole (41) is adapted to be threadedly connected with the connecting column (11) on the floor (10).

5. The wire harness mounting bracket of claim 3, wherein, At least one end of the support body (31) is provided with a third clamping portion (313), the lower side of the sound-absorbing cover (40) is provided with a fourth clamping portion (42), and the third clamping portion (313) and the fourth clamping portion (42) are clamped and matched to make the lower side of the sound-absorbing cover (40) fit with the support body (31).

6. The wire harness mounting bracket of claim 3, wherein, The sound-absorbing cover (40) is internally provided with a sound-absorbing cavity (43), and the lower side of the sound-absorbing cavity (43) is provided with a sound-absorbing port which is communicated with the through hole (312) in correspondence.

7. The wire harness mounting bracket of claim 6, wherein, The sound-absorbing cavity (43) is provided with resonance sound-absorbing particles (44) and a composite sound-absorbing layer (45).

8. The wire harness mounting bracket of claim 7, wherein, Compared with the resonance sound-absorbing particles (44), the composite sound-absorbing layer (45) is closer to the sound-absorbing port.

9. The wire harness mounting bracket of claim 7, wherein, The side of the composite sound-absorbing layer (45) facing the sound-absorbing port is sealed with a non-woven support cloth (46).

10. A vehicle characterized by comprising: It comprises: a floor (10); a sound insulation pad (20), the sound insulation pad (20) is arranged on the floor (10), and at least one through hole (21) is formed in the sound insulation pad (20); The wire harness fixing support (30) of any one of claims 1-9, at least one end of the wire harness fixing support (30) passes through the through hole (312) and is connected with the floor (10).