Sealing structure for composite top edge beam of passenger car

Abstract

The utility model belongs to the technical field of passenger car bodies, and discloses a passenger car composite top edge beam sealing structure which comprises a composite top body and an edge beam, the composite top body and the edge beam are bonded through structural adhesive, a sealing groove is formed in a gap of the outer side face, connected with the composite top body, of the edge beam, and sealant is filled in the sealing groove. According to the utility model, the sealing performance is enhanced through a double-sealing structure of the structural adhesive and the sealant, and the sealant adopts a hidden structure, so that the flatness of the surface is ensured, the installation of an outer side structural member is not influenced, and the appearance attractiveness is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of bus bodies, and in particular relates to a composite top side beam sealing structure of a bus. Background Art

[0002] Currently, lightweighting technology is a crucial component in promoting energy conservation and emission reduction in both traditional and new energy vehicles. With the advancement of China's "dual carbon" goals, the demand for lightweight vehicles has become even more urgent. Composite roofs, with their aviation-grade materials and optimized structure, offer new possibilities for lightweighting buses while ensuring vehicle safety and noise reduction. The composite roof structure features outer panels, the skin, and inner panels, the interior trim. The core material provides sound insulation and heat insulation, and its fully integrated functions greatly simplify bus production and assembly processes. Furthermore, the core material's density is significantly lower than that of metal, resulting in significant weight reduction and further enhancing the overall vehicle's lightweighting.

[0003] To achieve the required sealing of the vehicle body, the composite roof body and side rails are currently sealed by applying sealant to the outside of the seam between the outer panel and the side rail. However, this sealant seam is prone to cracking during vehicle operation, degrading sealing performance. Furthermore, the exposed sealant seam on the outside of the roof reduces smoothness and aesthetics. To maintain this aesthetic appearance, the gluing process is highly demanding. Utility Model Content

[0004] In response to the deficiencies in the background technology, the utility model provides a composite top side beam sealing structure for a passenger car. The sealing performance is enhanced through a double-pass sealing structure of structural adhesive and sealant. The sealant adopts a hidden structure to ensure the flatness of the surface, does not affect the installation of outer structural parts, and has a high aesthetic appearance.

[0005] To achieve the above objectives, the technical solutions of this utility model are as follows:

[0006] A passenger car composite roof side beam sealing structure is characterized by comprising a composite roof body and side beams, wherein the composite roof body and the side beams are bonded with structural adhesive, and a sealing groove is provided at the outer side gap where the side beams and the composite roof body are connected, and the sealing groove is filled with sealant.

[0007] Preferably, a structural groove is provided on the side end surface where the side beam is connected to the composite roof body, and the structural groove is filled with structural adhesive.

[0008] Preferably, the composite top body includes a core plate and an inner plate and an outer plate respectively arranged on the inner and outer sides of the core plate. The side end faces of the core plate and the inner plate are connected to the side end faces of the side beam, and the end of the outer plate extends toward the side beam to the outside of the groove of the sealing groove.

[0009] Preferably, the side end surfaces of the core plate and the inner plate are bonded to the side end surfaces of the edge beams by using structural adhesive, and the ends of the outer plates extend toward the side beams and are bonded to the outer side surfaces of the edge beams by using structural adhesive.

[0010] Preferably, the end of the outer plate extends toward the side beam until it covers the notch of the sealing groove and contacts the inner wall of the sealing groove away from the composite roof body.

[0011] Preferably, the inner side surface of the side beam extends toward one side of the composite roof body and is bonded to the inner side surface of the inner panel using structural adhesive.

[0012] Preferably, grooves are evenly formed on the extended surfaces of the outer side surface and the inner side surface of the side beam.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] (1) The utility model enhances the sealing performance through the double-channel sealing structure of structural adhesive and sealant, and the sealant adopts a hidden structure to ensure the flatness of the surface, without affecting the installation of external structural parts, and has a high aesthetic appearance;

[0015] (2) The utility model has a reserved sealing groove, which is convenient for the gluing process and can also easily handle defects such as glue overflow after installation, thus ensuring the aesthetic appearance;

[0016] (3) The composite roof body and the side beams of the present invention are connected by three-sided bonding, and grooves are provided on the bonding surfaces, which effectively enhances the firmness of the connection between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings.

[0018] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the side beam of the utility model;

[0020] In the figure: 1. composite roof body, 101. core plate, 102. inner plate, 103. outer plate, 2. side beam, 201. side end face of side beam, 202. outer side face of side beam, 203. inner side face of side beam, 3. structural adhesive, 4. sealing groove, 5. sealant, 6. structural groove, 7. groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "middle", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In this utility model, unless otherwise specified or limited, the terms "disposed," "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed or detachable connections, mechanical connections, direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0024] like Figure 1 As shown, a sealing structure of a composite roof side beam of a passenger car includes a composite roof body 1 and a side beam 2. The composite roof body and the side beam are bonded with structural adhesive 3. A structural groove 6 is provided on the side end surface where the side beam is connected to the composite roof body. The structural adhesive is squeezed and overflows at the joint between the two, thereby improving the bonding effect. A sealing groove 4 is provided at the gap between the outer side surface where the side beam is connected to the composite roof body. The sealing groove is opened on the outer side surface of the side beam. The sealing groove is filled with sealant 5. The sealing groove is located on one side of the structural adhesive between the outer side surface of the side beam and the composite roof body. After being squeezed, the sealant fills the joint between the outer side surface of the composite roof body and the side beam, forming a two-way seal with the structural adhesive to ensure the sealing effect of the roof cover. Moreover, the sealant is hidden in the sealing groove, which is more aesthetically pleasing.

[0025] Combine Figure 1 and Figure 2As shown, the composite roof body includes a core plate 101 and an inner plate 102 and an outer plate 103 bonded to the inner and outer sides of the core plate, respectively. The side beam and the composite roof body are connected at the end with a side end face 201 of the side beam, an outer side face 202 of the side beam, and an inner side face 203 of the side beam. The side end faces of the core plate and the inner plate are bonded to the side end face 201 of the side beam using structural adhesive. The end of the outer plate extends toward the side beam to the outside of the notch of the sealing groove and is bonded to the outer side face 202 of the side beam using structural adhesive. In this embodiment, the end of the outer plate extends toward the side beam until it covers the notch of the sealing groove and contacts the inner wall of the sealing groove away from the composite roof body, hiding the notch inside, improving the appearance and ensuring the flatness of the surface without affecting the installation of the outer structural parts. The inner side face 203 of the side beam extends toward the side of the composite roof body and is bonded to the inner side face of the inner plate using structural adhesive, achieving three-sided bonding between the side beam and the composite roof body and improving its firmness. In order to further enhance the bonding strength of the structural adhesive bonding surface between the side beam and the composite roof body, grooves 7 are evenly opened on the outer side surface of the side beam and the extended surface of the inner side surface, and the structural adhesive is spread over the outer side surface, side end surface, inner side surface and corresponding grooves of the aluminum profile side beam.

[0026] In the present invention, after the outer panel 103 and the inner panel 102 of the composite roof body 1 are bonded to the foam core material 101, structural adhesive 3 is used to bond the three sides of the composite roof body 1 to the aluminum side beam 2. During assembly, sealant 5 is injected into the sealing groove of the side beam. When the composite roof body and the side beam are bonded, the adhesive is squeezed to fill the joint, forming two seals with the structural adhesive to ensure the sealing effect of the roof cover.

[0027] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from all perspectives, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that come within the meaning and range of equivalents of the claims be included in the present invention.

Claims

1. A composite roof side beam sealing structure for a passenger car, characterized by: The composite roof body and the side beams are bonded together with structural adhesive. A sealing groove is provided at the outer side gap where the side beams and the composite roof body are connected. The sealing groove is filled with sealant.

2. A passenger car composite roof side beam sealing structure according to claim 1, characterized in that: A structural groove is provided on the side end surface where the side beam is connected to the composite roof body, and the structural groove is filled with structural adhesive.

3. The composite roof side beam sealing structure for a passenger car according to claim 1, characterized in that: The composite top body includes a core plate and inner and outer plates respectively arranged on the inner and outer sides of the core plate. The side end surfaces of the core plate and the inner plate are connected to the side end surfaces of the side beam, and the end of the outer plate extends toward the side beam to the outside of the notch of the sealing groove.

4. A passenger car composite roof side beam sealing structure according to claim 3, characterized in that: The side end surfaces of the core plate and the inner plate are bonded to the side end surfaces of the edge beams by using structural adhesive, and the ends of the outer plates extend toward the edge beams and are bonded to the outer side surfaces of the edge beams by using structural adhesive.

5. The composite roof side beam sealing structure for a passenger car according to claim 3, characterized in that: The end of the outer plate extends toward the side beam until it covers the notch of the sealing groove and contacts the inner wall of the sealing groove away from the composite roof body.

6. The passenger car composite roof side beam sealing structure according to claim 3, characterized in that: The inner side surface of the side beam extends toward one side of the composite roof body and is bonded to the inner side surface of the inner plate by using structural adhesive.

7. A passenger car composite roof side beam sealing structure according to claim 6, characterized in that: Grooves are evenly formed on the extended surfaces of the outer side surface and the inner side surface of the side beam.

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