Automobile composite glass with layered buffer explosion-proof function

Abstract

The application discloses a kind of layered buffer explosion-proof function's automobile composite glass, including frame and the composite glass layer being set in frame, composite glass layer includes outer toughened glass layer, inner toughened glass layer and the intermediate buffer layer being set between the two, intermediate buffer layer both sides are set to retreat clamping assembly, and outer toughened glass layer both sides are respectively inclined and supported on retreat clamping assembly. When outer toughened glass layer is impacted by larger, retreat clamping assembly elastically retreats and forms the clamping action towards the middle on the both sides of outer toughened glass layer, while impact protection assembly is pulled and is broken from easy tear connection section, and after breaking, the elastic retraction of elastic silica gel layer is carried out, and the protective liquid is applied along the inner side of outer toughened glass layer, to form the bonding and coating protection of broken glass, so as to reduce the risk of glass debris splashing, scattering and overall loose, improve the buffer explosion-proof and emergency protection performance of automobile composite glass after being impacted.

Description

Technical Field

[0001] This invention relates to the field of automotive glass, and more specifically to an automotive composite glass with layered buffer and explosion-proof function. Background Technology

[0002] As a crucial safety component of a vehicle, automotive glass not only needs to meet requirements for lighting, visibility, and sealing, but also must withstand impacts from flying stones, foreign objects, vehicle collisions, and instantaneous external impact loads during vehicle operation. The glass layers located on the exterior of the vehicle, in particular, are prone to radial cracks, localized breakage, or even large-scale shattering upon strong impacts. The broken glass fragments may become loose, detach, or scatter, rapidly reducing the glass's original protective capabilities and potentially causing secondary injuries to occupants and pedestrians.

[0003] Current automotive safety glass typically employs tempered glass, laminated glass, or multi-layered composite glass structures. Tempered glass primarily enhances the overall strength of the glass through tempering, resulting in relatively fine fragments upon breakage. Laminated glass usually incorporates an adhesive layer such as PVB or EVA between two layers of glass, allowing the fragments to adhere to some extent after breakage. While these structures can improve the safety of automotive glass after an impact to some extent, their protection relies mainly on the inherent strength of the glass itself or the passive restraint of the fragments by the fixed interlayer. Under significant impact, the outer glass layer can still rapidly develop numerous cracks. When these cracks connect, the broken area is prone to bulging, loosening, and partial detachment.

[0004] Especially when the outer glass is subjected to a concentrated impact, most of the internal layers of existing composite glass are in a fixed bonded state. The instantaneous impact load on the glass is quickly transmitted to the internal structure, lacking a yielding and buffering structure that can displace with the impact and absorb the impact energy. Therefore, when the outer glass undergoes significant local deformation or shattering, its edges cannot form a clamping constraint adapted to the impact state in time. The already shattered glass area is prone to further loosening under the inertial action of subsequent vibrations, airflow, or continued vehicle movement.

[0005] On the other hand, the adhesive film used in existing laminated glass is generally fixed between the two layers of glass during the glass manufacturing stage. Its main function is to maintain the adhesion between the broken glass and the interlayer. It cannot actively release new protective media according to the fracture state after the glass is actually impacted and breaks. For the outermost tempered glass, once it cracks or breaks, the existing structure lacks an emergency protection mechanism that can immediately act on the inner surface of the outer tempered glass after an impact to perform secondary bonding and surface restraint on the already cracked glass fragments. Therefore, how to maintain good transparency and integrity of automotive composite glass under normal use, while simultaneously generating protective actions such as buffering, edge clamping, and active adhesive release when the outer tempered glass is impacted, to reduce the risk of loosening, falling off, and splashing after the outer tempered glass breaks, is a technical problem that still needs to be further solved in the existing automotive composite glass structure. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an automotive composite glass with layered buffer explosion-proof function, which effectively overcomes the shortcomings of existing technologies.

[0007] This invention is achieved through the following technical solution: an automotive composite glass with layered buffer explosion-proof function, comprising: The frame, and the composite glass layer filling the frame; The composite glass layer includes: An outer tempered glass layer, an inner tempered glass layer, and an intermediate buffer layer, wherein the intermediate buffer layer is located between the outer tempered glass layer and the inner tempered glass layer; The retraction clamping assembly is disposed on both sides of the outer end of the intermediate buffer layer, and the two sides of the outer tempered glass layer are respectively inclinedly supported on the retraction clamping assembly; The impact protection component has its two ends fixedly connected to the opposite surfaces of two recoil clamping components. When the impact protection component breaks in the middle, it applies the protective liquid stored inside to the inner surface of the outer tempered glass layer.

[0008] As a preferred technical solution, the protective liquid is a single-component transparent moisture-curing silicone, and the impact protection component includes: A transparent elastic silicone layer is provided, which is in a contracted and wrinkled state in its natural state. Two application contact parts are provided in the middle of the elastic silicone layer, and an easy-tear connecting section is provided between the two application contact parts. When the elastic silicone layer is stretched on both sides, the entire elastic silicone layer breaks at the easy-tear connecting section. After the breakage, the elastic silicone layer at both ends retracts inward along the length direction and resets, and the protective liquid is applied by the application contact parts.

[0009] As a preferred technical solution, the elastic silicone layer is hollowed out to form a liquid storage cavity, and the protective liquid is filled in the liquid storage cavity. The coating contact part is provided with one or more coating holes on the side that contacts the inner side of the outer tempered glass layer, and the protective liquid flows out from the coating holes and contacts the inner side of the outer tempered glass layer for coating.

[0010] As a preferred technical solution, the easy-tear connecting section is formed by bonding and fixing the two coating contact parts together with adhesive.

[0011] As a preferred technical solution, the retraction clamping assembly includes a support member made of elastic plastic. The support member includes a support portion and a clamping portion. The support portion and the clamping portion are arranged in an L-shaped structure. The side of the support portion facing the outer tempered glass layer is provided with a first inclined contact surface. The two sides of the outer tempered glass layer form a second inclined contact surface at the contact positions with the first inclined contact surface.

[0012] As a preferred technical solution, the first inclined contact surface contacts the second inclined contact surface and is fixed and bonded with glue.

[0013] As a preferred technical solution, a triangular-shaped opening is formed between the support part and the clamping part.

[0014] As a preferred technical solution, a rigid support plate is provided on the outer end of each support member, and a recess is provided on the inner side of the frame corresponding to the bottom position of the rigid support plate. When the outer tempered glass layer is impacted and the support part is squeezed, the bottom position of the rigid support plate is recessed into the recess, and the position of the clamping part forms a clamping force on both sides of the outer tempered glass layer.

[0015] As a preferred technical solution, the intermediate buffer layer is a transparent microporous elastic layer.

[0016] The beneficial effects of this invention are: by setting a transparent microporous elastic intermediate buffer layer between the outer tempered glass layer and the inner tempered glass layer, the outer tempered glass layer can absorb and disperse part of the impact energy by utilizing the elastic deformation of the intermediate buffer layer when it is impacted, thereby reducing the direct transmission of impact force to the inner tempered glass layer and improving the overall buffering and impact resistance performance of the composite glass.

[0017] This invention incorporates an impact protection component. When the outer tempered glass layer is subjected to a significant impact, causing the elastic silicone layer to be stretched to the point of breakage at the easily tearable joint, the broken elastic silicone layer can quickly retract due to its own elasticity. Simultaneously, a single-component transparent moisture-curing silicone from the reservoir is applied along the inner surface of the outer tempered glass layer, allowing the protective liquid to cover the cracked and shattered areas. Upon contact with air moisture, the protective liquid gradually cures, forming an emergency bond and coating on the shattered glass, effectively reducing the risk of glass fragments splashing, scattering, and further crack propagation.

[0018] This invention uses a retractable clamping assembly to dynamically clamp the outer tempered glass layer. When the outer tempered glass layer is impacted and squeezed inwards towards the support, the support elastically retracts, causing the clamping parts on both sides to clamp towards the center of the outer tempered glass layer. This creates mechanical constraints on both sides of the outer tempered glass layer that has cracked or shattered, reducing the possibility of the broken glass expanding to both sides, loosening, and detaching from the frame.

[0019] Therefore, this invention can simultaneously form two emergency protections after the outer tempered glass layer is impacted: "inner side adhesive release and bonding" and "two-sided clamping and restraint". The impact protection component is used to actively adhere to and cover the broken glass, while the yielding clamping component is used to mechanically gather and limit the broken glass. The two work together to maintain the integrity of the glass as much as possible after it breaks, thereby improving the explosion-proof, splash-proof and emergency safety protection capabilities of automotive composite glass after sudden impact. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal cross-section of the present invention; Figure 3 For the present invention Figure 2 A magnified view of a section at point A in the middle; Figure 4 For the present invention Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is an exploded view of the structure of the present invention; Explanation of reference numerals in the attached figures: 1. Frame; 2. Composite glass layer; 21. Outer tempered glass layer; 22. Inner tempered glass layer; 23. Intermediate buffer layer; 3. Retreat clamping assembly; 24. Impact protection assembly; 241. Elastic silicone layer; 242. Coating contact part; 31. Support part; 32. Clamping part; 33. First inclined contact surface; 211. Second inclined contact surface; 34. Opening; 35. Rigid support piece; 101. Retreat groove. Detailed Implementation

[0022] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0023] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features for a similar purpose, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0024] This embodiment provides an automotive composite glass with layered buffering and explosion-proof function, including a frame 1 and a composite glass layer 2 filled within the frame 1. The frame 1 forms the outer mounting and load-bearing base for the entire automotive composite glass. The frame 1 can be adapted to the shape of the windshield, side window, or other automotive glass installation area, allowing the composite glass layer 2 to be stably installed in the corresponding vehicle body position. The composite glass layer 2 is entirely embedded within the frame 1. Under normal use, it forms a transparent observation area. When subjected to external flying stones, foreign object collisions, or other instantaneous impacts, the multi-level buffering structure and emergency protection structure within the composite glass layer 2 reduce the possibility of large-scale loosening, splashing, and detachment of the glass.

[0025] The composite glass layer 2 includes an outer tempered glass layer 21, an inner tempered glass layer 22, and an intermediate buffer layer 23 arranged sequentially along its thickness direction. The outer tempered glass layer 21 is located on the side facing the exterior of the vehicle and is used to initially withstand collisions and impacts from external foreign objects during vehicle operation. The inner tempered glass layer 22 is located on the side facing the interior of the vehicle and can still provide further protection on the passenger compartment side even after the outer tempered glass layer 21 is impacted or even breaks. The intermediate buffer layer 23 is located between the outer tempered glass layer 21 and the inner tempered glass layer 22, forming an elastic buffer area between the two layers to prevent the instantaneous impact force from being directly and rigidly transmitted to the inner tempered glass layer 22 after the outer tempered glass layer 21 is impacted.

[0026] In this embodiment, the intermediate buffer layer 23 is a transparent microporous elastic layer, which has light transmittance properties suitable for automotive glass applications. Simultaneously, its internal microporous structure allows for compressive deformation under pressure. When the outer tempered glass layer 21 is subjected to an impact load towards the inner tempered glass layer 22, the intermediate buffer layer 23 first undergoes elastic compression, absorbing some of the impact energy through microporous contraction and material deformation. After the impact dissipates or weakens, it exhibits a certain degree of elastic recovery. By providing the intermediate buffer layer 23, the composite glass layer 2 forms a layered buffer structure along its thickness, with the outer layer bearing the impact, the middle layer providing elastic buffering, and the inner layer continuing to protect. This reduces the risk of continuous breakage caused by the direct transmission of instantaneous impact force between the glass layers.

[0027] A recoil clamping assembly 3 is provided on both sides of the outer end of the intermediate buffer layer 23. The recoil clamping assemblies 3 on both sides are arranged in a relative manner, and the outer tempered glass layer 21 is inclinedly supported on the corresponding recoil clamping assembly 3 on both sides. The recoil clamping assembly 3 is not only used to support and limit the position of the outer tempered glass layer 21 under normal conditions, but also to generate elastic recoil when the outer tempered glass layer 21 is impacted and displaces inward, and to form a clamping action towards the middle region of the outer tempered glass layer 21 by utilizing its structural deformation. Therefore, the outer tempered glass layer 21 can be kept stable by the recoil clamping assemblies 3 on both sides when it is not impacted, and when the outer tempered glass layer 21 is subjected to force and displacement, the recoil clamping assemblies 3 on both sides can move synchronously with the displacement of the outer tempered glass layer 21.

[0028] Specifically, the retractable clamping assembly 3 includes a support structure made of elastic plastic. This support structure comprises a support portion 31 and a clamping portion 32, which are interconnected and form an approximately L-shaped structure. The support portion 31 primarily bears the force transmitted from the edge of the outer tempered glass layer 21, while the clamping portion 32 is located on the outer side of the edge of the outer tempered glass layer 21, providing lateral clamping force to the outer tempered glass layer 21 when the support portion 31 undergoes retractable deformation. A triangular opening 34 is formed between the support portion 31 and the clamping portion 32, providing space for elastic deformation of both components. This allows the entire retractable clamping assembly 3 to undergo relatively stable elastic deformation when compressed by the outer tempered glass layer 21, rather than forming a completely rigid support.

[0029] The support 31 has a first inclined contact surface 33 on the side facing the outer tempered glass layer 21, and second inclined contact surfaces 211 are formed on both sides of the outer tempered glass layer 21 corresponding to the first inclined contact surface 33. The first inclined contact surface 33 and the second inclined contact surface 211 are in close contact with each other, so that the two sides of the outer tempered glass layer 21 are not fixed by vertical contact, but by force-bearing cooperation through inclined surfaces. When the outer tempered glass layer 21 is subjected to external impact and displaces in the direction of the inner tempered glass layer 22, the second inclined contact surface 211 can apply a compressive force with a lateral component to the support 31 along the first inclined contact surface 33, so that the support 31 will elastically retract during the compression process. The first inclined contact surface 33 and the second inclined contact surface 211 are further fixed and bonded with adhesive, ensuring a stable connection between the edge of the outer tempered glass layer 21 and the retraction clamping assembly 3 under normal use, and allowing the entire retraction clamping assembly 3 to retract through its own deformation after reaching a set impact level.

[0030] Each recoil clamping assembly 3 has a rigid support plate 35 on its outer end. The rigid support plate 35 cooperates with the corresponding elastic support structure to limit the local deformation direction of the support structure, so that the support part 31 can recoil in a preset direction when it is squeezed by the outer tempered glass layer 21. A recoil groove 101 is provided on the inner side of the frame 1 at a position corresponding to the bottom of the rigid support plate 35. The recoil groove 101 provides space for the displacement of the rigid support plate 35. Under normal conditions, the rigid support plate 35 is located outside the recoil groove 101 or corresponds to the groove area of ​​the recoil groove 101. When the outer tempered glass layer 21 is subjected to a large external impact and squeezes the support part 31 through the second inclined contact surface 211, the support part 31 undergoes elastic deformation and drives the bottom of the rigid support plate 35 to gradually enter the recoil groove 101.

[0031] As the rigid support piece 35 moves into the recessed groove 101, the relative shape between the support part 31 and the clamping part 32 changes, and the clamping part 32 gradually shifts or clamps towards the center of the outer tempered glass layer 21. Since the two recessed clamping components 3 are arranged in a relative manner, the two clamping parts 32 can simultaneously clamp the outer tempered glass layer 21 from both sides towards the center. When the outer tempered glass layer 21 has cracked or partially shattered due to impact, this clamping action can limit the overall expansion of the outer tempered glass layer 21 to both sides, reduce the possibility of the broken parts rapidly loosening due to loss of overall strength, and keep the broken outer tempered glass layer 21 as close as possible to the installation area defined by the frame 1. At the same time, the elastic deformation of the support part 31 itself and the displacement of the rigid support piece 35 into the recessed groove 101 can also release some of the impact displacement transmitted by the outer tempered glass layer 21, thereby forming a protective process that combines recessed buffering and lateral clamping.

[0032] An impact protection component 24 is disposed between the opposing surfaces of the two recoil clamping components 3. The impact protection component 24 is laterally disposed inside the outer tempered glass layer 21, and its two ends are fixedly connected to the two recoil clamping components 3 respectively. The impact protection component 24 is used to be stretched when the outer tempered glass layer 21 is subjected to a large impact, causing relative displacement of the two recoil clamping components 3, and breaks from its middle region after reaching a set stretching degree. After the impact protection component 24 breaks, it does not lose its protective function, but uses the elastic reset action generated after the breakage to release the protective liquid pre-stored inside to the inner surface of the outer tempered glass layer 21, and completes the application along the inner surface of the outer tempered glass layer 21, thereby forming an emergency adhesive protection for the outer tempered glass layer 21 that has already cracked or shattered.

[0033] The impact protection component 24 includes a transparent elastic silicone layer 241, which extends along the inner side of the outer tempered glass layer 21 and has good elastic stretching properties. In its natural state without stretching, the elastic silicone layer 241 is in a wrinkled state along its length, allowing for a certain amount of unfolding allowance. When the vehicle is in normal operation or the composite glass layer 2 is subjected to only minor vibration, the wrinkled structure of the elastic silicone layer 241 can adapt to slight displacement without breaking. When the outer tempered glass layer 21 is subjected to a sufficiently large impact, causing the two side recoil clamping components 3 to recoil accordingly and apply a large tensile force to both ends of the elastic silicone layer 241, the elastic silicone layer 241 first gradually unfolds from its wrinkled state and stores elastic potential energy as the degree of stretching increases.

[0034] Two opposing application contact portions 242 are provided in the middle of the elastic silicone layer 241, connected by an easy-tear connecting section. The connection strength of the easy-tear connecting section is lower than the tensile strength that the main body of the elastic silicone layer 241 can withstand, so that when the impact protection component 24 is subjected to continuous tensile force, the fracture point can be relatively concentrated between the two application contact portions 242. The easy-tear connecting section is formed by bonding the two application contact portions 242 together with adhesive. By setting the bonding area, bonding position, or bonding strength, it can be made to maintain the connection under normal use, and to preferentially separate after reaching the set tensile force, thereby avoiding random tearing of the elastic silicone layer 241 at uncontrollable locations.

[0035] The elastic silicone layer 241 has a hollow structure, forming a reservoir for storing a protective liquid. The protective liquid is pre-sealed and filled inside the reservoir. In this embodiment, the protective liquid is a single-component transparent moisture-curing silicone. When the protective liquid is relatively isolated from the outside air and moisture inside the reservoir, it can maintain an uncured fluid state. When the impact protection component 24 breaks and the protective liquid is released from the reservoir, the protective liquid can come into contact with the moisture in the outside air and gradually cure. Because the protective liquid itself has transparent properties, it will not significantly affect the light transmission requirements of the composite glass layer 2 in its normal, unreleased state, and it can also minimize the impact on the driver's field of vision after being released onto the inner surface of the outer tempered glass layer 21.

[0036] The coating contact portion 242 has one or more coating holes on the side facing the inner side of the outer tempered glass layer 21. These coating holes communicate with the liquid storage chamber inside the elastic silicone layer 241. Under normal conditions, the protective liquid is sealed and stored inside the liquid storage chamber and will not be discharged in large quantities. When the easy-tear connecting section breaks under impact, the sealing state of the corresponding area of ​​the liquid storage chamber is broken. At the same time, the elastic recoil generated by the stretching of the elastic silicone layer 241 and the deformation of the liquid storage chamber itself can both cause the protective liquid to flow towards the coating holes, allowing the protective liquid to be discharged through the coating holes to the inner side of the outer tempered glass layer 21.

[0037] When the tear-off connector between the two coating contact parts 242 breaks, the originally stretched elastic silicone layer 241 splits into two parts, left and right. Under their own elastic restoring force, the two parts of the elastic silicone layer 241 quickly retract and reset towards the corresponding retracting clamping assembly 3. During the retraction of the two parts of the elastic silicone layer 241, the two coating contact parts 242 respectively approach the inner surface of the outer tempered glass layer 21 and move to both sides along its surface. At this time, the protective liquid flowing out of the coating hole is continuously driven and spread on the inner surface of the outer tempered glass layer 21 as the coating contact part 242 moves, so that the protective liquid is not only concentrated at a single release position, but can form a certain range of coating area as the coating contact part 242 retracts and moves.

[0038] When the outer tempered glass layer 21 is subjected to a concentrated external impact, a local crack usually forms first at the impact site, which may further develop into radial cracks or fragmented areas. The protective fluid released after the impact protection component 24 breaks can cover at least part of the cracked area along the inner surface of the outer tempered glass layer 21 and penetrate between adjacent fragmented areas. Upon contact with moisture in the air, the protective fluid gradually solidifies, forming additional adhesion between multiple fragmented sections from the inner side of the outer tempered glass layer 21. It also provides some coverage and adhesion for smaller glass fragments, thereby reducing the likelihood of the already broken outer tempered glass layer 21 scattering outwards, falling inwards, or partially detaching under subsequent vehicle vibration, wind pressure, or inertia.

[0039] In this embodiment, the impact protection component 24 and the retraction clamping component 3 do not function independently. When the outer tempered glass layer 21 is subjected to a large impact, the outer tempered glass layer 21 first undergoes a certain degree of inward displacement. The middle buffer layer 23 is compressed and deformed, absorbing part of the impact energy. At the same time, the two sides of the outer tempered glass layer 21 exert a compressive force on the support portion 31 through the cooperation of the first inclined contact surface 33 and the second inclined contact surface 211, causing the retraction clamping components 3 on both sides to elastically retract. The action of the retraction clamping components 3 causes the clamping portions 32 on both sides to form a clamping force towards the center of the outer tempered glass layer 21. On the other hand, since the two ends of the impact protection component 24 are respectively fixed to the opposite surfaces of the two retraction clamping components 3, the displacement of the retraction clamping components 3 will simultaneously apply a stretching effect to the elastic silicone layer 241.

[0040] When the impact is minor, the intermediate buffer layer 23 and the recoil clamping assembly 3 can buffer the impact through their own elastic deformation, and the elastic silicone layer 241 only expands to a certain extent while remaining intact. When the impact is significant and reaches the preset protection condition, the displacement of the two recoil clamping assemblies 3 causes the tensile force on the elastic silicone layer 241 to reach the breakage condition of the easy-tear connecting section, and the easy-tear connecting section immediately separates. As a result, the impact protection assembly 24 is automatically triggered, the broken elastic silicone layer 241 quickly retracts, and the internal protective liquid is applied to the inner surface of the outer tempered glass layer 21 using the coating contact part 242. The entire triggering process directly uses the structural displacement caused by the impact as the power source, without the need for additional sensors, motors, pneumatic components, or electronic control mechanisms. The structural response is direct and can be linked with the impact state of the glass.

[0041] Therefore, when the outer tempered glass layer 21 is subjected to an external impact of a certain degree, this embodiment can form two basically simultaneous emergency protection functions. On the one hand, while the two-sided recoil clamping components 3 perform buffer recoil, the clamping part 32 applies clamping force from both sides of the outer tempered glass layer 21 towards the middle, mechanically gathering and edge-limiting the outer tempered glass layer 21 that has already cracked or partially broken, reducing the tendency of the broken glass to expand to both sides and the overall loosening; on the other hand, the impact protection component 24 utilizes the elastic recoil of the elastic silicone layer 241 after breakage to actively coat the protective liquid along the inner surface of the outer tempered glass layer 21, and relies on the subsequent curing of the protective liquid to form an adhesive to retain the broken area. The two protection measures act simultaneously from two directions: the mechanical constraint of the outer periphery of the outer tempered glass layer 21 and the adhesion of the inner surface, so that the broken outer tempered glass layer 21 can maintain its original overall shape as much as possible for a certain period of time.

[0042] In the actual assembly process, the inner tempered glass layer 22 and the intermediate buffer layer 23 can be installed into the frame 1 first. Then, the retraction clamping components 3 are arranged on both sides of the intermediate buffer layer 23, and the rigid support piece 35 is aligned with the retraction groove 101 on the frame 1. Subsequently, the second inclined contact surfaces 211 on both sides of the outer tempered glass layer 21 are respectively attached and bonded to the first inclined contact surfaces 33 on the corresponding support parts 31, so that the outer tempered glass layer 21 forms a stable inclined support. The impact protection component 24 is disposed in the inner area of ​​the outer tempered glass layer 21, and its two ends are respectively fixedly connected to the two retraction clamping components 3. The two application contact parts 242 are located in the middle of the elastic silicone layer 241, so that the application contact parts 242 can maintain a suitable application correspondence with the inner surface of the outer tempered glass layer 21.

[0043] In this embodiment, the composite glass layer 2 remains completely transparent during normal use, while the intermediate buffer layer 23, the recoil clamping assembly 3, and the impact protection assembly 24 are all in a protected state. When the outer tempered glass layer 21 is subjected to a strong impact, the intermediate buffer layer 23 absorbs energy elastically, the recoil clamping assembly 3 recoils and holds the glass, and the impact protection assembly 24 breaks and releases adhesive, thus providing protective actions sequentially or simultaneously. This allows for active bonding and mechanical clamping of the shattered glass during the short period after breakage, preventing the outer tempered glass layer 21 from immediately forming a large amount of flying debris and falling off completely, even if cracks or partial breakage occur. This improves the emergency protection performance of the automotive composite glass in the event of a sudden impact.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A composite automotive glass with layered buffer and explosion-proof function, characterized in that, include: A frame (1), and a composite glass layer (2) filled within the frame (1); The composite glass layer (2) includes: The outer tempered glass layer (21), the inner tempered glass layer (22), and the intermediate buffer layer (23) are located between the outer tempered glass layer (21) and the inner tempered glass layer (22). The retraction clamping assembly (3) is disposed on both sides of the outer end of the intermediate buffer layer (23), and the two sides of the outer tempered glass layer (21) are respectively inclined and supported on the retraction clamping assembly (3); The impact protection component (24) is fixedly connected at both ends to the opposite surfaces of the two retractable clamping components (3). When the impact protection component (24) breaks in the middle, the impact protection component (24) applies the protective liquid (246) stored inside it along the inner surface of the outer tempered glass layer (21).

2. The automotive composite glass with layered buffer explosion-proof function according to claim 1, characterized in that: The protective liquid (246) is a single-component transparent moisture-curing silicone, and the impact protection component (24) includes: A transparent elastic silicone layer (241) is in a contracted and wrinkled state in its natural state. Two application contact parts (242) are provided in the middle of the elastic silicone layer (241), and an easy-tear connecting section (243) is provided between the two application contact parts (242). When the elastic silicone layer (241) is stretched on both sides, the entire elastic silicone layer (241) breaks at the position of the easy-tear connecting section (243). After the breakage, the elastic silicone layers (241) at both ends retract inward along the length direction and reset, and the protective liquid (246) is applied by the application contact parts (242).

3. The automotive composite glass with layered buffer explosion-proof function according to claim 2, characterized in that: The elastic silicone layer (241) has a hollow interior to form a liquid storage cavity (244), and the protective liquid (246) is filled in the liquid storage cavity (244). The coating contact part (242) has one or more coating holes (245) on the side that contacts the inner side of the outer tempered glass layer (21). The protective liquid (246) flows out from the coating holes (245) and contacts the inner side of the outer tempered glass layer (21) for coating.

4. The automotive composite glass with layered buffer explosion-proof function according to claim 3, characterized in that: The easy-tear connecting section (243) is formed by bonding and fixing the two coating contact parts (242) together with glue.

5. The automotive composite glass with layered buffer explosion-proof function according to claim 1, characterized in that: The retraction clamping assembly (3) includes a support member (30) made of elastic plastic. The support member (30) includes a support portion (31) and a clamping portion (32). The support portion (31) and the clamping portion (32) are arranged in an L-shape. The support portion (31) has a first inclined contact surface (33) on the side facing the outer tempered glass layer (21). The two sides of the outer tempered glass layer (21) form a second inclined contact surface (211) at the contact position with the first inclined contact surface (33).

6. The automotive composite glass with layered buffer explosion-proof function according to claim 5, characterized in that: The first inclined contact surface (33) contacts the second inclined contact surface (211) and is fixed and bonded with glue.

7. The automotive composite glass with layered buffer explosion-proof function according to claim 6, characterized in that: A triangular-shaped opening (34) is formed between the support part (31) and the clamping part (32).

8. The automotive composite glass with layered buffer explosion-proof function according to claim 7, characterized in that: A rigid support plate (35) is provided on the outer end of each support member (30). A recessed groove (101) is provided on the inner side of the frame (1) corresponding to the bottom position of the rigid support plate (35). When the outer tempered glass layer (21) is impacted and the support part (31) is squeezed, the bottom position of the rigid support plate (35) is recessed into the recessed groove (101), and the position of the clamping part (32) forms a clamping force on both sides of the outer tempered glass layer (21).

9. The automotive composite glass with layered buffer explosion-proof function according to claim 1, characterized in that: The intermediate buffer layer (23) is a transparent microporous elastic layer.

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