Ceiling structure and vehicle
By designing a ceiling structure including multiple weakening grooves, the problem of difficulty in blasting and unfolding of air curtain under the panoramic sky curtain and safety handle design is solved, and the rapid expansion of air curtain and safety protection performance is improved.
Patent Information
- Application Number
- CN202421616180.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-09
AI Technical Summary
The existing technology is difficult to meet the requirements of air curtain blasting and unsecured design schemes under the panoramic sky curtain and the design scheme without safety handles. The original weakened design scheme cannot effectively reduce the strength of the ceiling structure.
A ceiling structure is designed, including a ceiling body, a window and a weakened structure located on the left and right sides of the window. The weakened structure consists of a first weakening groove, a second weakening groove and a third weakening groove. The strength of the ceiling structure is reduced by the arrangement of these grooves to ensure that the air curtain can be expanded quickly.
It realizes that under the panoramic sky curtain and no safety handle design, the air curtain can be quickly expanded to cover the designated area, improving the blasting deployment efficiency and safety protection performance of the air curtain.
Smart Images
Figure CN222793455U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to a roof structure and a vehicle. Background Art
[0002] With the improvement of vehicle safety requirements, the design and application of side airbags are becoming more and more common. As a safety airbag installed on the side of the vehicle window, the side airbag can pop out quickly when a collision occurs on the side of the vehicle body, filling the actual gap between the driver and the side of the vehicle body, playing a buffering role, and can effectively reduce the impact and damage of the collision force on the occupants. In order to ensure that the side airbags can be quickly deployed to cover the designated area, the relevant existing technology will weaken the design of the vehicle's interior ceiling to meet the requirements of the side airbag for the redundant amount of the explosion safety factor. However, with the application of panoramic skylights and no safety handles, the strength of the interior ceiling has changed, and the original weakening design scheme can no longer meet the explosion deployment requirements of the airbags. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, in a first aspect, the utility model proposes a roof structure that can meet the requirements of explosive deployment of air curtains under panoramic skylights and designs without safety handles.
[0004] In a second aspect, the utility model provides a vehicle using the above-mentioned roof structure.
[0005] According to the ceiling structure of the embodiment of the first aspect of the utility model, it includes a ceiling body, the ceiling body is provided with a window and a weakening structure located on the left and right sides of the window, the weakening structure includes a first weakening groove and a second weakening groove, wherein the first weakening groove extends from the front end of the ceiling body to the rear end of the ceiling body; the second weakening groove is located on the side of the first weakening groove close to the window, and one end of the second weakening groove extends toward the first weakening groove, and the other end of the second weakening groove extends toward the window.
[0006] The ceiling structure according to the embodiment of the utility model has at least the following beneficial effects: the ceiling structure of the utility model is provided with weakening structures on both sides of the window, which can facilitate the deployment of the air curtains on both sides of the ceiling. Specifically, the first weakening groove can be used to weaken the structural strength of the ceiling body in the extension area in the front-back direction. When the air curtain located inside the ceiling body explodes, the first weakening groove can be used to affect the folding position of the ceiling body, so that the air curtain can be quickly deployed to cover the designated area. The first weakening groove extends from the front end to the rear end of the ceiling body, and can simultaneously weaken the strength of the A-pillar, B-pillar, and C-pillar positions, so as to facilitate the deployment of the air curtain in the corresponding area. At the same time, the weakening structure is also provided with a second weakening groove extending from the first weakening groove to the window, which can further weaken the strength of the corresponding area along the width direction of the ceiling structure, so as to facilitate the deployment of the air curtain. And the window can be used for the setting of the panoramic skylight, and can also be used for the setting of the panoramic sunroof. Therefore, the ceiling structure of the utility model can meet the requirements of the explosion and deployment of the air curtain under the panoramic skylight and the design scheme without safety handles.
[0007] According to some embodiments of the present invention, the second weakening groove includes an A-pillar weakening groove and a C-pillar weakening groove, wherein the A-pillar weakening groove is located at the front end of the roof body, and the C-pillar weakening groove is located at the rear end of the roof body. Thus, the strength of the roof body near the A-pillar and the C-pillar is weakened by the A-pillar weakening groove and the C-pillar weakening groove, thereby improving the accuracy of the air curtain explosion.
[0008] According to some embodiments of the utility model, the ceiling structure further comprises a reinforcement frame, and the reinforcement frame is connected to the ceiling body along the contour of the window. Thus, the structural strength of the window is ensured by the reinforcement frame.
[0009] According to some embodiments of the utility model, the outer contour of the reinforcement frame is provided with a first notch, the first notch corresponds to the front vertex position of the window, and the end of the A-pillar weakening groove away from the first weakening groove extends into the first notch. Thus, the length of the A-pillar weakening groove is extended while ensuring the strength of the window, thereby improving the weakening effect of the weakening structure.
[0010] According to some embodiments of the utility model, the outer contour of the reinforcement frame is provided with a second notch, the second notch corresponds to the rear end vertex position of the window, and the end of the C-pillar weakening groove away from the first weakening groove extends into the second notch. Thus, the length of the C-pillar weakening groove is extended while ensuring the strength of the window, thereby improving the weakening effect of the weakening structure.
[0011] According to some embodiments of the utility model, the weakening structure further includes a third weakening groove, the third weakening groove is located on the side of the first weakening groove away from the window, and one end of the third weakening groove extends toward the first weakening groove, and the other end of the third weakening groove extends in a direction away from the first weakening groove. Thus, the third weakening groove is used to weaken the strength on the side of the first weakening groove away from the window, thereby improving the accuracy of the air curtain blasting.
[0012] According to some embodiments of the utility model, the ceiling body includes a substrate layer and a surface layer, and along the thickness direction of the substrate layer, at least one of the first weakening groove, the second weakening groove, and the third weakening groove penetrates the substrate layer. Thus, the weakening effect of the weakening groove is improved by penetrating the substrate layer.
[0013] According to some embodiments of the present invention, at least one of the first weakening groove, the second weakening groove and the third weakening groove is formed by slots distributed at intervals, and the slots penetrate the substrate layer along the thickness direction of the substrate layer. In this way, the structural strength of the substrate layer can be taken into account, and the weakening effect of the weakening groove can be further improved.
[0014] According to some embodiments of the present invention, the length L of the notch and the distance D between two adjacent notches satisfy: L / D≤2 / 1. Thus, the strength of the substrate layer and the weakening effect of the weakening groove can be taken into account at the same time.
[0015] The vehicle according to the second embodiment of the utility model applies the roof structure of any one of the above embodiments.
[0016] The vehicle according to the embodiment of the utility model has at least the following beneficial effects: the vehicle of the utility model, by applying the above-mentioned roof structure, can use the first weakening groove to weaken the structural strength of the left and right sides of the roof body in the front and rear directions. When the air curtain located inside the roof body explodes, the first weakening groove can affect the folding position of the roof body, so that the air curtain can be quickly deployed to cover the designated area. The first weakening groove extends from the front end to the rear end of the roof body, and can simultaneously weaken the strength of the A-pillar, B-pillar, and C-pillar positions, facilitating the deployment of the air curtain in the corresponding area. At the same time, the weakening structure is also provided with a second weakening groove extending from the first weakening groove to the window, which can further weaken the strength of the corresponding area along the width direction of the roof structure, facilitating the deployment of the air curtain. And the window can be used for the setting of a panoramic skylight or a panoramic sunroof. Therefore, the vehicle of the utility model can meet the requirements for the explosion and deployment of the air curtain under the panoramic skylight and the design scheme without a safety handle.
[0017] Additional aspects and advantages of the present invention will be partially given in the following description, and some of the additional aspects and advantages will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:
[0019] Figure 1 It is a schematic diagram of an overall structure of the ceiling structure in the utility model;
[0020] Figure 2 A schematic diagram of a configuration of the A-pillar weakening groove of the ceiling structure in the utility model;
[0021] Figure 3 A schematic diagram of a configuration of the C-pillar weakening groove and the third weakening groove of the ceiling structure of the utility model;
[0022] Figure 4 A structural schematic diagram of a ceiling body of the ceiling structure in the utility model;
[0023] Figure 5 A schematic diagram of a configuration of the notches of the ceiling structure in the utility model;
[0024] Figure 6 It is an axial schematic diagram of the ceiling structure of the utility model;
[0025] Figure 7 It is a schematic diagram of the surface layer of the ceiling structure in the utility model.
[0026] In the figure:
[0027] 100-ceiling body, 101-window, 102-base material layer, 103-surface layer;
[0028] 200-weakened structure, 201-first weakened groove, 202-A-pillar weakened groove, 203-C-pillar weakened groove, 204-third weakened groove, 2001-notch;
[0029] 300-reinforcement frame, 301-first notch, 302-second notch. DETAILED DESCRIPTION
[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.
[0031] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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.
[0032] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.
[0034] With the improvement of vehicle safety requirements, the design and application of side airbags are becoming more and more common. As a safety airbag installed on the side of the vehicle window, the side airbag can pop out quickly when a collision occurs on the side of the vehicle body, filling the actual gap between the driver and the side of the vehicle body, playing a buffering role, and can effectively reduce the impact and damage of the collision force on the occupants. In order to ensure that the side airbags can be quickly deployed to cover the designated area, the relevant existing technology will weaken the design of the vehicle's interior ceiling to meet the requirements of the side airbag for the redundant amount of the explosion safety factor. However, with the application of panoramic skylights and no safety handles, the strength of the interior ceiling has changed, and the original weakening design scheme can no longer meet the explosion deployment requirements of the airbags.
[0035] To this end, the utility model proposes a roof structure that can meet the requirements of blasting and deploying air curtains under panoramic skylights and designs without safety handles.
[0036] Reference Figure 1The ceiling structure of an embodiment of the utility model includes a ceiling body 100, and the ceiling body 100 is provided with a window 101 and a weakening structure 200 located on the left and right sides of the window 101. Since the air curtain is usually arranged on the left and right sides of the vehicle body for side protection, the air curtain can be blasted and deployed by arranging the weakening structure 200 on the left and right sides of the window 101. Specifically, the weakening structure 200 includes a first weakening groove 201 and a second weakening groove, wherein the first weakening groove 201 extends from the front end of the ceiling body 100 to the rear end of the ceiling body 100, and is used to weaken the strength of the area extended to from the length direction of the ceiling body 100. It can be understood that the A-pillar, the B-pillar and the C-pillar are distributed front and back along the length direction of the ceiling body 100, so when setting the first weakening groove 201, it can be set corresponding to the air curtain position of the A-pillar, the B-pillar and the C-pillar. The second weakened groove is located on the side of the first weakened groove 201 close to the window 101, and one end of the second weakened groove extends toward the first weakened groove 201, and the other end of the second weakened groove extends toward the window 101. In this way, the second weakened groove extends along the width direction of the ceiling body 100, further weakening the structural strength of the ceiling body 100, and facilitating the explosion and deployment of the air curtain.
[0037] The ceiling structure of the utility model is provided with weakening structures 200 on both sides of the window 101, which can facilitate the deployment of air curtains on both sides of the ceiling. Specifically, the first weakening groove 201 can be used to weaken the structural strength of the ceiling body 100 in the extension area in the front-to-back direction. When the air curtain located inside the ceiling body 100 explodes, the first weakening groove 201 can affect the folding position of the ceiling body 100, so that the air curtain can be quickly deployed to cover the designated area. The first weakening groove 201 extends from the front end to the rear end of the ceiling body 100, and can simultaneously weaken the strength of the A-pillar, B-pillar, and C-pillar positions, so as to facilitate the deployment of the air curtain in the corresponding area. At the same time, the weakening structure 200 is also provided with a second weakening groove extending from the first weakening groove 201 to the window 101, which can further weaken the strength of the corresponding area along the width direction of the ceiling structure, so as to facilitate the deployment of the air curtain. The second weakening groove is used to weaken the strength in the width direction of the ceiling body 100, so as to facilitate the deployment of the air curtain to the area close to the driver and passengers, thereby improving the safety protection performance of the air curtain. And the window 101 can be used for the setting of the panoramic skylight or the setting of the panoramic sunroof. Therefore, the roof structure of the utility model can meet the requirements of the air curtain blasting deployment under the panoramic skylight and the design scheme without safety handle.
[0038] Reference Figure 2 and Figure 3In some embodiments of the utility model, the second weakening groove includes an A-pillar weakening groove 202 and a C-pillar weakening groove 203. Relative to the vehicle body coordinate system, the A-pillar weakening groove 202 is located at the front end of the roof body 100, and the C-pillar weakening groove 203 is located at the rear end of the roof body 100, so as to weaken the strength of the roof body 100 at the positions close to the A-pillar and the C-pillar of the vehicle body respectively. It can be understood that the roof body 100 has a transition curved surface that is bent downward toward the front end and bent downward toward the outside at the position close to the A-pillar, and has a transition curved surface that is bent downward toward the rear end and bent downward toward the outside at the position close to the C-pillar. The structural strength of the roof body 100 at the two positions is relatively large. In this embodiment, by setting the A-pillar weakening groove 202 and the C-pillar weakening groove 203, the strength can be weakened at the two positions, so that the air curtain at the A-pillar position and the air curtain at the C-pillar position can be smoothly deployed, thereby improving the accuracy of the air curtain explosion. Furthermore, when the air curtains arranged on the A-pillar and the C-pillar are designed to be deployed to the front and rear areas of the driver and passengers, the A-pillar weakened grooves 202 and the C-pillar weakened grooves 203 can also implement the design to ensure the smooth deployment of the air curtains.
[0039] Reference Figure 2 In some embodiments of the present invention, the front end of the A-pillar weakening groove 202 is close to the first weakening groove 201, and the rear end extends toward the window 101. With the structural arrangement of this embodiment, a weakening form with an angle distribution is formed between the A-pillar weakening groove 202 and the first weakening groove 201, and the A-pillar weakening groove 202 can be used to weaken the folding strength of the front end of the roof body 100, which is conducive to the explosion and deployment of the air curtain from this area.
[0040] Reference Figure 3 In some embodiments of the present invention, the rear end of the C-pillar weakening groove 203 is close to the first weakening groove 201, and the front end extends toward the window 101. With the structural arrangement of this embodiment, the C-pillar weakening groove 203 and the first weakening groove 201 are distributed at an angle to weaken the folding strength of the rear end of the roof body 100, which is conducive to the explosion and deployment of the air curtain from this area.
[0041] Reference Figure 1 and Figure 6 In some embodiments of the present invention, the ceiling structure further includes a reinforcement frame 300, and the reinforcement frame 300 is connected to the ceiling body 100 along the contour of the window 101. Thus, the structural strength of the window 101 is ensured by the reinforcement frame 300.
[0042] Based on the structure of the above embodiment, Figure 2, the outer contour of the reinforcement frame 300 is provided with a first notch 301, and the first notch 301 corresponds to the front vertex position of the window 101, that is, the first notch 301 is provided at the two vertex positions of the front end of the reinforcement frame 300. The A-pillar weakening groove 202 extends into the first notch 301 from one end away from the first weakening groove 201. Since the reinforcement frame 300 can improve the structural strength of the roof body 100, if the size of the panoramic sunroof is large, the strength enhancement of the reinforcement frame 300 will affect the weakening of the weakening structure 200. With the structural setting of this embodiment, by providing the first notch 301 on the reinforcement frame 300, the A-pillar weakening groove 202 can be extended into the first notch 301, thereby expanding the weakening range, and extending the length of the A-pillar weakening groove 202 while ensuring the strength of the window 101, thereby improving the weakening effect of the weakening structure 200.
[0043] Further, in some embodiments of the present invention, referring to Figure 3 , a second notch 302 is provided in the outer contour of the reinforcement frame 300, and the second notch 302 corresponds to the rear end vertex position of the window 101, that is, the second notch 302 is provided at the two vertex positions of the rear end of the reinforcement frame 300. The C-pillar weakening groove 203 extends from one end away from the first weakening groove 201 to the second notch 302. Similarly, since the reinforcement frame 300 can improve the structural strength of the ceiling body 100, when the reinforcement frame 300 is close to the air curtain, it is easy to affect the folding of the ceiling structure, resulting in untimely deployment of the air curtain. In this embodiment, the second notch 302 is provided to extend the C-pillar weakening groove 203 and increase the weakened area of the C-pillar weakening groove 203. While ensuring the strength of the window 101, the length of the C-pillar weakening groove 203 can be extended, thereby improving the weakening effect of the weakening structure 200.
[0044] Continue to refer to Figure 3 In some embodiments of the present invention, the weakening structure 200 further includes a third weakening groove 204, which is located on the side of the first weakening groove 201 away from the window 101, and one end of the third weakening groove 204 extends toward the first weakening groove 201, and the other end of the third weakening groove 204 extends in a direction away from the first weakening groove 201. It can be understood that in the aforementioned embodiment, the first weakening groove 201 is only provided with a second weakening groove on the side close to the window 101, and the edge of the roof body 100 is provided with a transition curved surface extending downward to facilitate connection with other interior panels of the vehicle body, and the roof body 100 is not easy to fold at the curved surface position. In this embodiment, by providing the third weakening groove 204, a weakened area can be formed at such a curved surface position, which facilitates the folding of the roof body 100 along the weakening groove, thereby allowing the air curtain to be quickly deployed. Furthermore, the third weakening groove 204 can also cooperate with the setting of the second weakening groove to weaken the strength of the ceiling body 100 at the front end or the rear end of the first weakening groove 201, thereby improving the accuracy of the air curtain blasting.
[0045] Reference Figure 3 In some embodiments of the present invention, the third weakened groove 204 is only provided at the rear end of the first weakened groove 201. Specifically, the front end of the third weakened groove 204 extends toward the first weakened groove 201, and the rear end of the third weakened groove 204 extends toward the direction away from the first weakened groove 201 to the side close to the ceiling body 100. The rear end of the C-pillar weakened groove 203 extends toward the first weakened groove 201, and the front end of the C-pillar weakened groove 203 extends toward the window 101. Moreover, along the front-to-back direction of the ceiling body 100, the rear end of the C-pillar weakened groove 203 is located behind the front end of the third weakened groove 204. With the structural setting of this embodiment, the third weakening groove 204 and the C-pillar weakening groove 203 are distributed in an N shape on the roof body 100 near the C-pillar of the vehicle body, which can effectively weaken the strength of the area, avoid the roof body 100 being too strong near the C-pillar of the vehicle body due to the setting of the transition curved surface, and avoid the situation where the roof is difficult to fold or the folding position is uncontrollable when the air curtain explodes.
[0046] Reference Figure 4 and Figure 5 In some embodiments of the utility model, the ceiling body 100 includes a substrate layer 102 and a surface layer 103. When assembled on the vehicle body, the substrate layer 102 is the end facing away from the passenger space in the vehicle, and the surface layer 103 is the end facing the passenger space in the vehicle. Along the thickness direction of the substrate layer 102, the first weakened groove 201, the second weakened groove and the third weakened groove 204 all penetrate the substrate layer 102. Since the substrate layer 102 is facing away from the passenger space in the vehicle, the arrangement of the first weakened groove 201, the second weakened groove and the third weakened groove 204 penetrating the substrate layer 102 can not only effectively weaken the structural strength of the ceiling body 100, so that the ceiling body 100 is folded along the first weakened groove 201, the second weakened groove and the third weakened groove 204 when the air curtain explodes, but also because of the covering of the surface layer 103, it will not affect the interior effect of the vehicle body. It can be understood that the first weakened groove 201 , the second weakened groove and the third weakened groove 204 only penetrate the base material layer 102 and do not damage the surface layer 103 .
[0047] In the related prior art, the base material layer 102 is a PU glass fiber board or a PP board, and the surface layer 103 is a knitted fabric. Therefore, the first weakening groove 201, the second weakening groove and the third weakening groove 204 penetrate the base material layer 102 to effectively and satisfies the strength requirements of the ceiling body 100 in the setting area, without the need to design a weakening of the surface layer 103. However, when the surface layer 103 is made of non-knitted fabric and has a certain rigidity and strength, those skilled in the art can also further extend the first weakening groove 201, the second weakening groove and the third weakening groove 204 to the surface layer 103 in the thickness direction of the ceiling body 100, and improve the weakening effect of the first weakening groove 201, the second weakening groove and the third weakening groove 204 by thinning the thickness of the surface layer 103 or penetrating the surface layer 103.
[0048] It should be noted that, among the first weakening groove 201, the second weakening groove and the third weakening groove 204, only a part of the weakening grooves may penetrate the substrate layer 102, for example, only the first weakening groove 201 penetrates the substrate layer 102, while the second weakening groove and the third weakening groove 204 are only grooves that can reduce the thickness of the substrate layer 102; or only the second weakening groove and the third weakening groove 204 penetrate the substrate layer 102, while the first weakening groove 201 is a groove that can reduce the thickness of the substrate layer 102. Alternatively, only a part of the groove sections of the first weakening groove 201, the second weakening groove and the third weakening groove 204 penetrate the substrate layer 102 in the length direction, while a part of the groove sections are grooves that reduce the thickness of the substrate layer 102. Those skilled in the art can flexibly set it according to the actual strength reduction effect and the strength requirements of the ceiling body 100, which will not be described in detail here.
[0049] Reference Figure 5 In some embodiments of the present invention, the first weakened groove 201, the second weakened groove and the third weakened groove 204 are formed by slots 2001 arranged at intervals, and the slots 2001 penetrate the substrate layer 102 along the thickness direction of the substrate layer 102. With the structural setting of this embodiment, the first weakened groove 201, the second weakened groove and the third weakened groove 204 are formed by multiple slots 2001 arranged at intervals, and the interval between the two slots 2001 can be used to ensure the support and structural strength of the substrate layer 102, and the slots 2001 can penetrate the substrate layer 102 to weaken the structural strength of the substrate layer 102, thereby improving the weakening effect of the weakened groove while taking into account the structural strength of the substrate layer 102.
[0050] On this basis, the length L of the notch 2001 and the spacing D between two adjacent notches 2001 satisfy: L / D≤2 / 1. This embodiment can effectively take into account both the structural strength and the weakening effect of the ceiling body 100 by controlling the length L of the notch 2001 and the spacing D between the two notches 2001 within 2:1. It can be understood that the spacing D between two adjacent notches 2001 mainly refers to two adjacent notches 2001 in the same weakening groove. The spacing of the notches 2001 between two weakening grooves can be flexibly set according to actual needs.
[0051] Reference Figures 1 to 7In some embodiments of the utility model, the ceiling structure includes a ceiling body 100 and a reinforcement frame 300. The ceiling body 100 is provided with a window 101 in the middle area, and a weakening structure 200 is provided on the left and right sides of the window 101. The weakening structure 200 corresponds to the position where the air curtain is set to be deployed when the ceiling body 100 is assembled on the vehicle body. When the air curtain explodes, the structural strength of the side area of the ceiling body 100 is weakened by the weakening structure 200, so that the ceiling body 100 can be folded outward to deploy the air curtain. The inner circle size of the reinforcement frame 300 is adapted to the window 101, so that it is arranged on the ceiling structure along the contour of the window 101, and is used to strengthen the periphery of the window 101. In the thickness direction, the ceiling body 100 includes a substrate layer 102 and a surface layer 103 arranged in a close relationship. The substrate layer 102 is a PU glass fiber layer, and the surface layer 103 is a knitted fabric. The reinforcement frame 300 is bonded to the ceiling body 100 by spray molding. During the molding process, specifically, the reinforcement frame 300 is attached to the back of the substrate layer 102, and the reinforcement frame 300 has a flange that abuts against the edge of the substrate layer 102 from the window 101 position, and the surface layer 103 is folded from the window 101 position to the inner edge area of the reinforcement frame 300. The reinforcement frame 300 is made of metal material, such as a sheet metal structure, to improve the structural strength of the periphery of the window 101. Notches are set at the four corner positions of the reinforcement frame 300, specifically divided into two first notches 301 located at the front end and two second notches 302 located at the rear end. It can be understood that since the window 101 must have four sides, front, back, left and right, but the two adjacent sides may adopt a rounded transition, correspondingly, the reinforcement frame 300 is also a rounded transition structure, and the four corners correspond to the transition area of each two sides. The weakening structures on both sides of the window 101 include a first weakening groove 201, an A-pillar weakening groove 202, a C-pillar weakening groove 203 and a third weakening groove 204. The four weakening grooves are arranged with multiple notches 2001 at intervals along their length direction. The weakening grooves are all arranged on the substrate layer 102 and penetrate the substrate layer 102 along the thickness direction of the substrate layer 102. The length L of the notch 2001 of each weakening groove is 20 mm, the spacing D between two adjacent notches 2001 is 10 mm, and the width of the notch 2001 is 0.1 mm. Since the surface layer 103 is facing the end of the vehicle body interior, and the substrate layer 102 is located on the back of the surface layer 103, facing the air curtain, the weakening grooves arranged through the slots can effectively weaken the structural strength of the ceiling body 100, and at the same time, the spaced slots can ensure the supporting strength of the ceiling body 100. Along the length direction of the ceiling body 100, the first weakening groove 201 extends from the front end of the ceiling body 100 to the rear end of the ceiling body 100, thereby simultaneously weakening the strength of the ceiling for the air curtains arranged in the A-pillar, B-pillar, and C-pillar regions.It can be understood that the first weakening groove 201 does not limit the vehicle body to be provided with air curtains in the corresponding areas of the A-pillar, B-pillar, and C-pillar, but is used to weaken the strength as much as possible in the length direction of the roof body 100. When air curtains are provided in some areas of the A-pillar, B-pillar, and C-pillar, the first weakening groove 201 provided in this way is also conducive to the folding of the roof body 100 when the air curtain explodes. The A-pillar weakening groove 202 is located at the front end of the roof body 100, the front end of the A-pillar weakening groove 202 is close to the first weakening groove 201, and the rear end extends to the first notch 301. The C-pillar weakening groove 203 is located at the rear end of the roof body 100, the front end of the C-pillar weakening groove 203 extends to the second notch 302, and the rear end extends to the rear end close to the first weakening groove 201. The third weakening groove 204 is located at the rear end of the roof body 100, the front end of the third weakening groove 204 is close to the first weakening groove 201, and the rear end extends to the side edge of the roof body 100.
[0052] When the air curtain is detonated, it inflates and expands, and the back side of the roof body 100 is squeezed and folded along the weakened groove, so that the air curtain is guided out from the notch after the roof body 100 is folded, unfolds and covers the designated area, thereby protecting the driver and passengers.
[0053] With the structural setting of this embodiment, the ceiling body 100 adopts an eight-shaped weakened groove design near the A-pillar, so that it can correspond to the diagonal direction of the sun visor side and the front end of the window 101, so that when the air curtain explodes, the ceiling body 100 can fold along the weakened groove and release stress to ensure the smooth deployment of the air curtain, while effectively reducing the impact on the sun visor, which is beneficial to the safety protection of the driver and passengers.
[0054] When installed on the vehicle body, the roof body 100 is fixed by setting mushroom buckles on the reinforcement frame 300 to engage with the matching mushroom buckles on the base of the skylight glass. In this embodiment, the first weakened groove 201 passes through the area at the B-pillar position, which can protect the B-pillar from being shattered when the air curtain explodes, and at the same time reduce the pulling force on the mushroom buckle. At the C-pillar position, the roof body 100 uses the N-shaped weakened grooves to effectively weaken the strength brought by the curvature of the shape at this location, which is conducive to ensuring that the roof can be folded along the weakened grooves when the air curtain explodes, protecting the interior panel at the C-pillar position from being pulled off or flying out, and at the same time reducing the pulling force on the mushroom buckle and the force on the rear reading light bracket.
[0055] It should be noted that, on the basis of adopting the above-mentioned weakening groove that penetrates the substrate layer 102, a weakening groove that only thins the thickness of the substrate layer 102 can be further set. Those skilled in the art can set it according to the actual thickness of the substrate layer 102, which will not be described in detail here.
[0056] The utility model also proposes a vehicle, which uses the roof structure of any of the above embodiments. It is understandable that the vehicle of the utility model can use the first weakening groove 201 to weaken the structural strength of the left and right sides of the roof body 100 in the front and rear directions by applying the above roof structure. When the air curtain located on the inner side of the roof body 100 explodes, the first weakening groove 201 can affect the folding position of the roof body 100, so that the air curtain can be quickly deployed to cover the designated area. The first weakening groove 201 extends from the front end to the rear end of the roof body 100, and can simultaneously weaken the strength of the A-pillar, B-pillar, and C-pillar positions, so as to facilitate the deployment of the air curtain in the corresponding area. At the same time, the weakening structure 200 is also provided with a second weakening groove extending from the first weakening groove 201 to the window 101, which can further weaken the strength of the corresponding area along the width direction of the roof structure, so as to facilitate the deployment of the air curtain. It is understandable that the window 101 can be used for the setting of a panoramic skylight, and can also be used for the setting of a panoramic sunroof, and is also applicable to ordinary skylights and sunroofs. Therefore, the vehicle of the present invention can meet the requirements of the blasting deployment of the air curtain under the panoramic skylight and the design scheme without safety handles.
[0057] The vehicle in the present invention may be a private car, such as a sedan, SUV, MPV or pickup truck. The vehicle may also be an operating vehicle, such as a van, bus, small truck or large trailer. The vehicle may be a gasoline vehicle or a new energy vehicle. When the vehicle is a new energy vehicle, it may be a hybrid vehicle or a pure electric vehicle.
[0058] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. A ceiling structure, characterized in that: include: A ceiling body, wherein the ceiling body is provided with a window and a weakening structure located on the left and right sides of the window, wherein the weakening structure comprises a first weakening groove and a second weakening groove, wherein: The first weakened groove extends from the front end of the ceiling body to the rear end of the ceiling body; The second weakened groove is located on a side of the first weakened groove close to the window, and one end of the second weakened groove extends toward the first weakened groove, and the other end of the second weakened groove extends toward the window.
2. The ceiling structure according to claim 1, characterized in that: The second weakening groove includes an A-pillar weakening groove and a C-pillar weakening groove, the A-pillar weakening groove is located at the front end of the roof body, and the C-pillar weakening groove is located at the rear end of the roof body.
3. The ceiling structure according to claim 2, characterized in that: The ceiling structure also includes a reinforcement frame, and the reinforcement frame is connected to the ceiling body along the outline of the window.
4. The ceiling structure according to claim 3, characterized in that: A first notch is arranged on the outer contour of the reinforcement frame, and the first notch corresponds to the front end vertex position of the window, and an end of the A-pillar weakening groove away from the first weakening groove extends into the first notch.
5. The ceiling structure according to claim 3, characterized in that: A second notch is provided on the outer contour of the reinforcement frame, and the second notch corresponds to the rear end vertex position of the window, and an end of the C-pillar weakening groove away from the first weakening groove extends into the second notch.
6. The ceiling structure according to claim 1, characterized in that: The weakening structure further includes a third weakening groove, which is located on a side of the first weakening groove away from the window, and one end of the third weakening groove extends toward the first weakening groove, and the other end of the third weakening groove extends away from the first weakening groove.
7. The ceiling structure according to claim 6, characterized in that: The ceiling body includes a base material layer and a surface layer. Along the thickness direction of the base material layer, at least one of the first weakened groove, the second weakened groove and the third weakened groove penetrates the base material layer.
8. The ceiling structure according to claim 7, characterized in that: At least one of the first weakened groove, the second weakened groove and the third weakened groove is formed by slots distributed at intervals, and the slots penetrate the substrate layer along the thickness direction of the substrate layer.
9. The ceiling structure according to claim 8, characterized in that: The length L of the notch and the distance D between two adjacent notches satisfy: L / D≤2 / 1.
10. A vehicle, characterized in that: The ceiling structure according to any one of claims 1 to 9 is used.