Front wall structure and vehicle

Abstract

The front wall structure comprises a first front wall plate, the bottom of the first front wall plate is connected with a front wall plate lower reinforcing beam, an air chamber is arranged on the top of the first front wall plate, the air chamber is connected with a front windshield lower cross beam, a second front wall plate is arranged on the outer side of the first front wall plate, and the second front wall plate is connected with a front windshield lower cross beam. A cavity is formed between the first dash panel and the second dash panel. According to the embodiment of the utility model, the air chamber is arranged on the double-front-wall structure, and the double-layer sound insulation pad is arranged on the double-front-wall structure, so that topological optimization of the torsional rigidity of the front-wall area of the engine compartment can be realized, and the torsional rigidity of the front-wall area is improved; good sound insulation performance can be achieved, and foreign matter in an engine compartment is prevented from entering a cab.

Description

Technical Field

[0001] The utility model relates to the technical field of a front enclosure structure of a vehicle, in particular to a front enclosure structure and a vehicle. Background Art

[0002] With the continuous improvement of the domestic economic level, passengers have higher and higher requirements for the quality of the whole vehicle, and are paying more and more attention to the noise level inside the car and the comfort of the passengers. In particular, customers currently have higher and higher requirements for the driving comfort of smart cockpits, among which NVH performance is an important factor affecting customer perception. Therefore, how to reduce the noise in the cab and improve passenger comfort is particularly important.

[0003] The front system of the vehicle body has the greatest impact on the noise level of the whole vehicle, and ranks first in importance. The improvement of the sound quality of the whole vehicle also mainly depends on the improvement of the performance of the front system. However, the sealing structure formed by the traditional front panel and sound insulation pad can no longer meet the increasingly improved sound insulation performance indicators, or to meet these indicators, the front panel and sound insulation pad need to be thickened to achieve sound insulation, which is increasingly expensive. Utility Model Content

[0004] In view of this, the utility model aims to provide a front enclosure structure and a vehicle to solve the technical problem that the front enclosure structure in the prior art is difficult to meet the increasingly improved sound insulation performance indicators.

[0005] One aspect of the utility model provides a front panel structure, including a first front panel, the bottom of the first front panel is connected to the lower reinforcement beam of the front panel, an air chamber is arranged on the top of the first front panel, the air chamber is connected to the lower cross beam of the front windshield, a second front panel is arranged on the outer side of the first front panel, and a cavity is formed between the first front panel and the second front panel.

[0006] In some embodiments, a ventilation cover is provided between the top of the second front panel and the lower cross beam of the front windshield, and the cavity is sealed by the ventilation cover.

[0007] In some embodiments, the ventilation cover is connected to the front windshield lower cross beam and the top of the second front panel by snapping.

[0008] In some embodiments, the top of the first front panel is connected to the lower cross beam of the front wind window through an air outer panel and an air inner panel, and an air chamber is enclosed by the air outer panel, the lower cross beam of the front wind window and the air inner panel.

[0009] In some embodiments, a sound insulation pad is disposed on any surface of the first front panel and / or the second front panel.

[0010] In some embodiments, a first dash panel sound insulation pad is disposed on a surface of the first dash panel facing the engine compartment, and a second dash panel sound insulation pad is disposed on a surface of the second dash panel facing the engine compartment.

[0011] In some embodiments, the first front panel is a planar structure, and at least one step structure is provided on the second front panel so that the bottom of the first front panel and the bottom of the second front panel are connected to form the cavity.

[0012] In some embodiments, a mounting bracket is disposed on the lower reinforcement beam of the front panel, and the bottom of the second front panel is disposed on the mounting bracket.

[0013] In some embodiments, a dash panel fixing beam is also included, and the dash panel fixing beam is connected to the middle portion of the second dash panel.

[0014] Another aspect of the present invention provides a vehicle, comprising any of the front enclosure structures described above, wherein the front enclosure structure is arranged between an engine compartment and a cab.

[0015] The embodiment of the utility model provides an air chamber on the double front wall structure and a double-layer sound insulation pad on the double front wall structure, which not only can realize topological optimization of the torsional stiffness of the front wall area of ​​the engine compartment and improve the torsional stiffness of the front wall area, but also can achieve good sound insulation performance and prevent foreign objects in the engine compartment from entering the cab.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method. The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of the front enclosure structure provided by the utility model.

[0019] The above drawings include the following reference numerals:

[0020] 1-Inner panel of air chamber; 2-First front panel; 3-Reinforcement beam under the front panel; 4-Mounting bracket; 5-Sound insulation pad of the second front panel; 6-Ventilation cover; 7-Front windshield lower cross beam; 8-Inner panel of air chamber; 9-Sound insulation pad of the first front panel; 10-Second front panel; 11-Fixed beam of the front panel; 12-Step structure. DETAILED DESCRIPTION

[0021] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but are not intended to limit the present invention.

[0022] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the utility model will occur to those skilled in the art.

[0023] The accompanying drawings, which are included in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, are used to explain the principles of the present invention.

[0024] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0025] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present invention that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0026] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0027] Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present invention. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of ways with substantially any suitable detailed structure.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present invention.

[0030] The first embodiment of the present disclosure provides a front enclosure structure, such as Figure 1 As shown, it includes a first front panel 2, which is arranged between the engine compartment and the cab to separate the engine compartment and the cab, thereby preventing exhaust gas, high temperature and other noise in the engine compartment from entering the cab.

[0031] The first dash panel 2 in this embodiment is arranged along the height direction of the vehicle. In order to arrange the first dash panel 2 between the engine compartment and the cab, a dash panel reinforcement beam 3 is arranged on the body sheet metal. The bottom of the first dash panel 2 is connected to the dash panel lower reinforcement beam 3, especially to the reinforcement plate on the dash panel lower reinforcement beam 3. An air chamber A is arranged on the top of the first dash panel 2, and the air chamber A is connected to the front windshield lower cross beam 7, so that the first dash panel 2 is fixed to the body sheet metal. Here, the dash panel reinforcement beam 3 and the front windshield lower cross beam 7 are both connected to the body sheet metal. Here, by connecting the top and bottom of the first dash panel 20 to the corresponding beam structure, the first dash panel 2 can be stably arranged between the engine compartment and the cab.

[0032] Further, the air chamber A here is a cavity structure, specifically, the top of the first front panel 2 is connected to the front windshield lower cross beam 7 through the air room outer panel 8 and the air room inner panel 1, and the air room outer panel 8 is connected to the first front panel 20. The air chamber A is surrounded by the air room outer panel 8, the front windshield lower cross beam 7 and the air room inner panel 1.

[0033] The shape of the air chamber A here can be determined according to the position between the windshield and the body sheet metal. For example, the air chamber inner panel 1 and the first front panel 2 are located in the same plane, and the air chamber outer panel 8 and the first front panel 2 are perpendicular to each other. In this way, in this embodiment, the triangular air chamber A is formed by the air chamber outer panel 8, the windshield lower cross beam 7 and the air chamber inner panel 1.

[0034] The air chamber A is arranged below the front windshield of the vehicle and between the front windshield and the engine compartment. Since the air chamber A has a certain space, the torsional rigidity of the area where the front enclosure structure is located can be significantly improved. In addition, the air chamber A also has the function of preventing fallen leaves, rainwater, etc. from entering the engine compartment. The air chamber A is applied to a vehicle, which can be a vehicle of various models, such as a sedan, a commercial vehicle, an off-road vehicle, or a sports utility vehicle.

[0035] Specifically, the connection method between the air outdoor panel 8 and the air indoor panel 1 can be set according to actual needs, such as connecting by spot welding. The connection method between the air outdoor panel 8 and the first front panel 2 can be set according to actual needs, such as connecting by spot welding. The connection method between the air outdoor panel 8 and the air indoor panel 1 and the front windshield lower crossbeam 7 can be bonding, so as to facilitate disassembly. In addition, the air indoor panel 1 can also be connected to the front windshield crossbeam, and the connection method can be welding.

[0036] Here, the structural difference of the air chamber A can be achieved by adjusting the size, cross-sectional shape, local structural form, material thickness, material, etc. of the air chamber outer panel 8 and the air chamber inner panel 1 to meet the installation overlap requirements of different types of vehicles.

[0037] Furthermore, a first dash panel sound insulation pad 9 is provided on the first dash panel 2, and the first dash panel sound insulation pad 9 can be provided on any surface of the first dash panel 2. Preferably, the first dash panel sound insulation pad 9 is provided on the surface of the first dash panel 2 facing the engine compartment by screwing, so that the noise generated in the engine compartment can be prevented from being transmitted to the cab through the first dash panel sound insulation pad 9. Of course, the first dash panel sound insulation pad 9 can also be provided on the surface of the first dash panel 2 away from the engine compartment or on both surfaces.

[0038] Furthermore, in order to enhance the sound insulation and dustproof performance of the front wall structure, a second front wall panel 10 is arranged outside the first front wall panel 2, and the second front wall panel 10 is arranged on the side of the first front wall panel 2 facing the engine compartment. Preferably, the projection size of the second front wall panel 10 is smaller than the projection size of the first front wall panel 2, so that it is convenient to install the front wall structure in the vehicle body.

[0039] Furthermore, the bottom of the second front panel 10 is connected to the bottom of the first front panel 2, so that a cavity is enclosed between the first front panel 2 and the second front panel 10. Preferably, the first front panel 2 adopts a planar structure to match the height direction of the vehicle, and at least one step structure 12 is provided on the second front panel 10. Here, the step structure 12 facilitates the second front panel 10 to tilt toward the first front panel 2, so that the bottom of the first front panel 2 and the bottom of the second front panel 10 can be connected to form a U-shaped cavity, and the cavity extends along the height direction of the vehicle. In this way, the torsional stiffness of the vehicle body can be significantly increased by the formed cavity, and then the structure of the traditional front panel lower cross beam and the engine compartment torsion beam can be replaced, and the structure of the engine compartment can be topologically optimized.

[0040] Furthermore, a ventilation cover 6 is arranged between the top of the second front panel 10 and the front windshield lower cross beam 7, wherein the ventilation cover 6 is connected and sealed with the front windshield lower cross beam 7 and the top of the second front panel 10 by a snap-fitting manner, and the first front panel 2 and the second front panel 10 are surrounded by the ventilation cover 6 to form a closed cavity with a double front structure, and a soundproof blocking space is formed by the formed closed cavity, so that noises of different frequency bands in the engine compartment can be further soundproofed and blocked. Preferably, the top of the second front panel 10 is located in the same plane as the front windshield lower cross beam 4, so as to facilitate the installation of the ventilation cover 6.

[0041] In order to facilitate the installation of the second front panel 10, a mounting bracket 4 is arranged on the front panel lower reinforcement beam 3, and the bottom of the second front panel 10 is arranged on the mounting bracket 4 to achieve connection with the first front panel 2. Here, the second front panel 10 is arranged on the mounting bracket 4 by screwing, and the second front panel 10 can especially be screwed on the mounting bracket 4 in the form of a black paint part.

[0042] Furthermore, considering that the second dash panel 10 is relatively large in size and thin in thickness, a dash panel fixing beam 11 is provided at the middle of the second dash panel 10, and the dash panel fixing beam 11 is screwed to the second dash panel 10, so that the second dash panel 10 can be better fixed in the vehicle height direction. Of course, multiple dash panel fixing beams 11 can also be provided at multiple positions of the second dash panel 10, so that the second dash panel 10 can be fixed more securely.

[0043] Further, the second dash panel 10 is provided with a second dash panel sound insulation pad 5, and the second dash panel sound insulation pad 5 can be provided on any surface of the second dash panel 10. Preferably, the second dash panel sound insulation pad 5 is provided on the surface of the second dash panel 10 facing the engine compartment by screw connection. Of course, the second dash panel sound insulation pad 5 can also be provided on the surface of the second dash panel 10 away from the engine compartment, or the second dash panel sound insulation pad 5 can be provided on both surfaces.

[0044] The first front panel sound insulation pad 9 and the second front panel sound insulation pad 5 can be made of, for example, a PU layer plus a non-woven fabric layer, or other existing sound-absorbing materials. In this way, by adding the second front panel sound insulation pad 5 on the outside of the first front panel sound insulation pad 9, the double-layer sound insulation pad can significantly improve the sound absorption effect of the noise from the engine compartment.

[0045] Compared with only setting the first front panel 2 and the first front panel sound insulation pad 9, the embodiment of the utility model adds the second front panel 10 and sets the second sound insulation pad 5 on the second front panel 10. After preliminary simulation, compared with the traditional single front panel structure, the sound insulation performance in the 400-8000Hz frequency band can be reduced by about 5dB on average, making the sound insulation effect obvious. In addition, under the condition of meeting the same sound insulation performance, the double front panel structure can reduce the weight by an estimated 3.45kg compared with the traditional single front panel structure. At the same time, the double front panel structure can also topologically optimize the internal structure of the engine compartment.

[0046] A second embodiment of the utility model provides a vehicle, which comprises at least an engine compartment and a cab, and also comprises the front enclosure structure in any one of the above-mentioned embodiments, wherein the front enclosure structure is arranged between the engine compartment and the cab and connected to the body sheet metal.

[0047] The bottom of the first front panel 2 in the front panel structure here is connected to the lower front panel reinforcement beam 3, an air chamber A is arranged on the top of the first front panel 2, and the air chamber A is connected to the lower cross beam 7 of the front windshield, a second front panel 10 is arranged on the outer side of the first front panel 2, and a cavity is formed between the first front panel 2 and the second front panel 10.

[0048] The embodiment of the utility model provides an air chamber on the double front wall structure and a double-layer sound insulation pad on the double front wall structure, which not only can realize topological optimization of the torsional stiffness of the front wall area of ​​the engine compartment and improve the torsional stiffness of the front wall area, but also can achieve good sound insulation performance and prevent foreign objects in the engine compartment from entering the cab.

[0049] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0050] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0051] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present utility model.

[0052] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0053] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A front wall structure, characterized in that: It includes a first front panel, the bottom of which is connected to the lower reinforcement beam of the front panel, an air chamber is arranged on the top of the first front panel, the air chamber is connected to the lower cross beam of the front windshield, a second front panel is arranged on the outer side of the first front panel, and a cavity is formed between the first front panel and the second front panel.

2. The front wall structure according to claim 1, characterized in that: A ventilation cover is arranged between the top of the second front panel and the lower cross beam of the front windshield, and the cavity is sealed by the ventilation cover.

3. The front wall structure according to claim 2, characterized in that: The ventilation cover plate is connected to the front windshield lower cross beam and the top of the second front panel by a snap-fitting manner.

4. The front wall structure according to claim 1, characterized in that: The top of the first front panel is connected to the lower cross beam of the front windshield through an air outer panel and an air inner panel, and the air chamber is surrounded by the air outer panel, the lower cross beam of the front windshield and the air inner panel.

5. The front wall structure according to claim 1, characterized in that: A sound insulation pad is arranged on any surface of the first front panel and / or the second front panel.

6. The front wall structure according to claim 5, characterized in that: A first dash panel sound insulation pad is arranged on the surface of the first dash panel facing the engine compartment, and a second dash panel sound insulation pad is arranged on the surface of the second dash panel facing the engine compartment.

7. The front wall structure according to claim 1, characterized in that: The first dash panel is a planar structure, and at least one step structure is provided on the second dash panel so that the bottom of the first dash panel and the bottom of the second dash panel are connected to form the cavity.

8. The front wall structure according to claim 1, characterized in that: A mounting bracket is arranged on the lower reinforcement beam of the front wall panel, and the bottom of the second front wall panel is arranged on the mounting bracket.

9. The front wall structure according to claim 1, characterized in that: It also includes a dash panel fixing beam, which is connected to the middle part of the second dash panel.

10. A vehicle, characterized in that: It comprises the front enclosure structure according to any one of claims 1 to 9, wherein the front enclosure structure is arranged between an engine compartment and a cab.

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