Tri-material injection-molded glass assembly

Abstract

A tri-material injection-molded glass assembly, comprising glass (1) and an encapsulated edge (2). The encapsulated edge (2) covers at least one surface of at least one edge portion of the glass (1). The encapsulated edge (2) comprises a first encapsulated-edge layer (21), a second encapsulated-edge layer (22) and a third encapsulated-edge layer (23). The first encapsulated-edge layer (21) is injection-molded on at least one surface of one edge portion of the glass, at least part of the second encapsulated-edge layer (22) is injection-molded on and covers the outside of the first encapsulated-edge layer (21), and the hardness of the second encapsulated-edge layer (22) is greater than that of the first encapsulated-edge layer (21). The third encapsulated-edge layer (23) is injection-molded on and covers at least part of the second encapsulated-edge layer (22), and the hardness of the third encapsulated-edge layer (23) is less than that of the second encapsulated-edge layer (22). In the glass assembly, the glass is covered with the first encapsulated-edge layer (21), and the second encapsulated-edge layer (22) is injection-molded on and covers the outside of the first encapsulated-edge layer (21), such that the glass and the first encapsulated-edge layer (21) are tightly bonded, and the first encapsulated-edge layer (21) and the second encapsulated-edge layer (22) are tightly bonded, thereby preventing the shrinkage and edge-warping of the hard second encapsulated-edge layer (22) from affecting the sealing performance and waterproofness of the glass assembly.

Description

A three-material injection-molded glass assembly

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on February 7, 2024, with application number 202410171391.7 and application name “A three-material injection molded glass assembly”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of automotive glass, and in particular to a three-material injection-molded glass assembly. Background Art

[0003] With the continuous development of automobile technology, users have higher requirements for the sealing and sound insulation performance of automobile glass. The perimeter of automobile glass is generally formed by injection molding process to increase the sealing and protection.

[0004] Existing glass edging is usually fixed on the glass by injection molding. First, the glass and injection molding particles are placed in the mold cavity to injection mold the hard edging, and then the soft edging is injection molded on the semi-finished product after injection molding, thus completing the injection molding production process of the double-material injection molding product with guide rail edging.

[0005] Because the primer coating process cannot be applied to the entire bonding area of ​​the glass, the hard edging needs to wrap around the circumference of the glass to form a complete circumferential structure, relying on the support of the glass to secure the hard edging. Due to the rigid bond between the hard plastic and the glass and the limitations of the primer coating process, the hard plastic shrinks and deforms due to material shrinkage, which can easily lead to areas of poor adhesion with the glass surface, creating gaps. In these areas of poor adhesion, the ability to prevent smoke or liquid from seeping in is poor. Under some extreme experimental conditions, smoke or liquid may leak from the outside of the product to the back, affecting the passenger experience.

[0006] The shrinkage rate of hard edging materials at room temperature is about 5‰-10‰. In some extreme environments, such as -30°C, injection molded products will produce greater shrinkage deformation. Some materials will even reach a deformation of about 15‰ in low temperature environments. This is a physical property of the material and cannot be avoided through structural optimization.

[0007] In the process of realizing the present invention, the inventors discovered that the following problems exist in the prior art: the existing hard edging is prone to warping and deformation, and gaps appear between the existing hard edging and the glass, causing smoke or liquid to leak from the back of the glass to the front of the glass, affecting the sealing and waterproof properties of the glass assembly. Summary of the Invention

[0008] In view of the above problems, it is necessary to provide a technical solution for improving the adhesion between the hard edging and the glass, so as to solve the problem that the hard edging in the prior art is prone to warping and deformation.

[0009] To achieve the above objectives, the present application provides a three-material injection molding edge assembly, comprising:

[0010] Glass;

[0011] Edge wrapping, covering at least one surface of at least one edge of the glass; the edge wrapping includes a first edge wrapping layer, a second edge wrapping layer and a third edge wrapping layer;

[0012] The first edge layer is injection-molded on at least one surface of the glass edge;

[0013] At least a portion of the second edge layer is injection-molded and coated on the outside of the first edge layer, and the hardness of the second edge layer is greater than that of the first edge layer;

[0014] The third edge layer is injection-molded and coated on at least a portion of the second edge layer. The hardness of the third edge layer is less than that of the second edge layer.

[0015] In some other embodiments, the first edging layer is provided with a first connecting portion, and the first connecting portion is arranged on the contact surface between the first edging layer and the second edging layer.

[0016] In some other embodiments, the first connecting portion is a protrusion or a groove.

[0017] In some other embodiments, the first connecting portion on the side surface of the first edging layer is a protrusion.

[0018] In some other embodiments, the second edging layer is provided with a second connecting portion, and the second connecting portion is arranged on the contact surface between the second edging layer and the third edging layer.

[0019] In some other embodiments, the contact length between the first edging layer and the inner surface of the glass is less than 5 mm.

[0020] In some other embodiments, the thickness of the first edging layer is no more than 5 mm.

[0021] In some other embodiments, the first edging layer and the third edging layer are made of soft plastic, and the second edging layer is made of hard plastic.

[0022] In some other embodiments, the first edging layer and the third edging layer are made of the same material.

[0023] In some other embodiments, the soft plastic has a Shore hardness of 60-95 degrees.

[0024] In some other embodiments, the soft plastic is TPE, PVC, PU or EPDM.

[0025] In some other embodiments, the hard plastic has a Rockwell hardness of 40-95 degrees.

[0026] In some other embodiments, the rigid plastic is PP, PVC, PA, POM, PC, ABS or SAN.

[0027] In some other embodiments, the second edging layer includes a mounting portion, and the mounting portion is integrally injection-molded with the second edging layer.

[0028] In some other embodiments, the method further includes:

[0029] The sheet metal is provided with a first through hole penetrating the sheet metal in a thickness direction;

[0030] The mounting portion is a nail column, which extends into the first through hole and is fixedly connected to the sheet metal.

[0031] In some other embodiments, the nail column is provided with a fixing groove for clamping with the sheet metal.

[0032] In some other embodiments, the third edging layer is provided with an outwardly protruding sealing tongue.

[0033] In some other embodiments, the number of the sealing tongues is more than two, and at least one of the sealing tongues abuts against the sheet metal.

[0034] Unlike existing technologies, the above-described technical solution places a soft first edging layer between the glass and the rigid second edging layer. The second edging layer and the first edging layer are tightly bonded and thus firmly fixed to the glass. When the second edging layer shrinks and deforms, the side of the first edging layer in contact with the second edging layer also deforms accordingly, ensuring that the first and second edging layers always maintain a tight connection, while the other side of the first edging layer remains fixedly connected to the glass. This arrangement effectively improves the adhesion between the edging layer and the glass, ensuring a tight fit between the glass and the first edging layer, and between the first and second edging layers. This prevents the rigid second edging layer from shrinking and warping, which could affect the sealing and waterproofing of the glass assembly. It also prevents the first edging layer from shifting due to excessive pressure during injection molding of the second edging layer.

[0035] The above-mentioned records related to the content of the invention are only an overview of the technical solution of this application. In order to enable ordinary technicians in this field to understand the technical solution of this application more clearly, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purposes and other purposes, features and advantages of this application easier to understand, the following is an explanation in combination with the specific implementation methods and drawings of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of this application and other related contents, and are not to be considered as limiting this application.

[0037] In the drawings of the specification:

[0038] FIG1 is a schematic cross-sectional view of a three-material injection-molded glass assembly according to an embodiment of the present application;

[0039] FIG2 is a schematic structural diagram of a three-material injection-molded glass assembly applied to a corner window according to an embodiment of the present application;

[0040] FIG3 is an enlarged cross-sectional view of the three-material injection-molded glass assembly shown in FIG2 taken along line AA;

[0041] FIG4 is a modified example of an enlarged cross-sectional view of the embodiment of FIG3 taken along line AA;

[0042] FIG5 is a modified example of an enlarged cross-sectional view of the embodiment of FIG3 taken along line AA;

[0043] FIG6 is a modified example of the cross-sectional structural diagram of FIG1;

[0044] FIG7 is a modified example of the cross-sectional structural diagram of FIG1;

[0045] FIG8 is an enlarged cross-sectional view of the three-material injection-molded glass assembly shown in FIG2 along line BB;

[0046] FIG9 is a modified example of an enlarged cross-sectional view of the three-component injection-molded glass assembly shown in FIG7 ;

[0047] FIG10 is a schematic structural diagram of a three-material injection-molded glass assembly applied to a corner window according to another embodiment of the present application;

[0048] FIG11 is a modified example of an enlarged view of the three-material injection-molded glass assembly shown in FIG10 ;

[0049] FIG12 is a modified example of an enlarged view of the three-material injection-molded glass assembly shown in FIG10;

[0050] FIG13 is an enlarged CC cross-sectional view of the three-material injection-molded glass assembly described in FIG12 ;

[0051] FIG14 is an enlarged cross-sectional view of the three-material injection-molded glass assembly shown in FIG12 taken along line DD;

[0052] FIG15 is a modified example of an enlarged cross-sectional view taken along line DD of the three-component injection-molded glass assembly of FIG14 ;

[0053] FIG16 is an enlarged EE cross-sectional view of the three-material injection-molded glass assembly described in FIG12 ;

[0054] FIG17 is a modified example of an enlarged cross-sectional view taken along line EE of FIG16;

[0055] FIG18 is a modified example of an enlarged cross-sectional view taken along line EE of FIG16 ;

[0056] FIG19 is a schematic structural diagram of a three-material injection-molded glass assembly according to another embodiment of the present application.

[0057] The reference numerals in the above drawings are explained as follows: 1. Glass; 2. Edging, 21. First edging layer, 211. First connecting portion, 22. Second edging layer, 221. Mounting portion, 222. Second connecting portion, 223. Fixing groove, 23. Third edging layer, 231. Sealing tongue; 3. Sheet metal. DETAILED DESCRIPTION

[0058] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0059] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0060] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0061] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0062] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0063] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0064] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0065] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0066] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0067] Existing automotive glass is typically primed in the bonding area before injection molding a hard edging. Due to limitations in the priming process, it's not possible to apply primer to all bonding areas. Furthermore, the hard edging is susceptible to shrinkage, making it easy for the bond to the glass surface to fail in unprimed areas. This creates gaps between the edging and the glass, allowing smoke and liquids to penetrate from outside the vehicle and resulting in a poor seal.

[0068] Referring to Figure 1, this embodiment provides a three-component injection-molded glass assembly, comprising glass 1 and edging 2. This three-component injection-molded glass assembly is used in the field of automotive glass technology, specifically in automotive corner window structures. The glass can be any commonly used glass for automotive corner windows. The glass can be tempered glass, laminated glass, organic glass, or inorganic glass, without limitation.

[0069] Figure 2 shows the application of a three-material injection-molded glass assembly on a corner window. Figure 3 is the AA cross-sectional view in Figure 2. The edging 2 covers at least one surface of at least one edge of the glass 1. The edging 2 includes a first edging layer 21, a second edging layer 22, and a third edging layer 23. The first edging layer 21 is injection-molded onto at least one surface of the glass edge, and at least a portion of the second edging layer 22 is injection-molded onto the outside of the first edging layer 21. The second edging layer 22 has a harderness than the first edging layer 21. The third edging layer 23 covers at least a portion of the second edging layer 22. The third edging layer 23 has a harderness than the second edging layer 22.

[0070] The first edging layer 21 can be disposed on at least one of the upper, side, and lower end surfaces of the glass edge. At least a portion of the second edging layer 22 is injection molded around the first edging layer 21. Specifically, the first edging layer 21 is entirely enclosed within the second edging layer 22. The shape and length of the first edging layer 21 can be designed based on the shape and requirements of the second edging layer 22.

[0071] The third edging layer 23 is injection molded over at least a portion of the second edging layer 22. Specifically, the third edging layer 23 only partially covers a portion of the second edging layer 22. The third edging layer 23 partially covers the outside of the second edging layer 22. The shape and structure of the third edging layer 23 can be adjusted and designed according to actual production needs.

[0072] The prior art uses hard plastic in the second edging layer 22, which not only results in high injection pressure and temperature, affecting the yield rate of the glass, but also makes the hard plastic easily detach from the glass and cause warping. In contrast, this solution provides a first edging layer 21 between the glass and the second edging layer 22. The first edging layer 21 is placed on the glass by injection molding, and the second edging layer 22 is tightly and stably fixed to the glass by the first edging layer 21. Deformation caused by cooling and shrinkage of the second edging layer 22 can be compensated by the first edging layer 21, thus avoiding gaps between the edging layer and the glass. Furthermore, the first edging layer 21 also acts as a buffer, improving the yield rate of the glass after injection molding the hard edging layer.

[0073] Unlike existing technologies, the above-described technical solution incorporates a soft first edging layer 21 between the glass 1 and the rigid first edging layer 21. The first edging layers 21 are tightly bonded to each other, firmly securing them to the glass 1. When the first edging layer 21 shrinks and deforms, the side of the first edging layer 21 in contact with the first edging layer 21 also deforms accordingly, ensuring a constant tight connection between the first edging layers 21 and the first edging layers 21, while the other side of the first edging layer 21 remains bonded to the glass 1. This arrangement effectively enhances the adhesion between the edging layer and the glass 1, ensuring a tight fit between the glass 1 and the first edging layer 21, and between the first edging layers 21 and the first edging layers 21. This prevents shrinkage and warping of the rigid first edging layer 21, which could affect the sealing and waterproofing of the glass assembly, and prevents smoke or liquid from leaking from the outside of the product to the back. Furthermore, the first edging layer 21 acts as a buffer, improving the yield rate of glass after injection molding the rigid edging layer.

[0074] In some other embodiments, the first edging layer 21 and the third edging layer 23 are made of soft plastic, and the second edging layer 22 is made of hard plastic. Furthermore, the Shore hardness of the soft plastic is 60-95 degrees. Alternatively, the Shore hardness of the soft plastic can be 65 degrees, or 70 degrees, 80 degrees, 85 degrees, 90 degrees, 95 degrees, and so on. Selecting a material with a hardness of 70-95 degrees for the first edging layer 21 and the third edging layer 23 ensures that the first edging layer 21 and the third edging layer 23 have a certain hardness and can also undergo a certain degree of deformation. Optionally, the soft plastic is TPE, PVC, PU, ​​or EPDM.

[0075] In some other embodiments, the second edging layer 22 is made of a hard plastic. Hard plastic generally refers to thermosetting plastics, which are processed using a hot pressing method and cannot be reprocessed or reused after forming. Specifically, the hard plastic used in this embodiment has a Rockwell hardness of 40-95 degrees. Without limitation, the Rockwell hardness of the hard plastic can be 45 degrees, 50 degrees, 55 degrees, 80 degrees, 90 degrees, and so on. Optionally, the hard plastic is PP, PVC, PA, POM, PC, ABS, or SAN.

[0076] In some other embodiments, the first edging layer 21 and the third edging layer 23 are made of the same material. Using the same material for the first edging layer 21 and the third edging layer 23 can save production steps and reduce production costs, as long as the adhesion between the soft material and the first edging layer 21 is considered. Without limitation, the third edging layer 23 and the first edging layer 21 can also be made of different materials.

[0077] As shown in FIG4 , in some other embodiments, the length of contact between the first edging layer 21 and the inner surface of the glass 1 is less than 5 mm. The length of contact between the first edging layer 21 and the inner surface of the glass 1 is indicated by ɑ in FIG4 . Specifically, the length of contact between the first edging layer 21 and the inner surface of the glass 1 can be 3.0 mm, or 3.2 mm, 3.5 mm, 3.8 mm, 4.0 mm, and so on.

[0078] The first edging layer 21 is tightly connected to the glass surface by injection molding. If the first edging layer 21 is connected to the glass surface by gluing, since a large injection pressure is required when injecting the second edging layer 22, the first edging layer 21 may easily shift when injecting the hard second edging layer 22. Therefore, when the first edging layer 21 is connected to the surface of the glass 1 by gluing, in order to ensure that there is sufficient gluing area between the first edging layer 21 and the glass 1 and to avoid the first edging layer 21 shifting during the injection molding of the second edging layer 22, the length of contact between the first edging layer 21 and the glass must be greater than 5mm. However, due to the limitations of some vehicle structure, the actual gluing length cannot meet the gluing contact length requirement of the first edging layer 21 and the glass 1. Moreover, in actual production, when the first edging layer 21 is glued to the surface of the glass 1 by gluing, it is difficult to achieve complete gluing between the first edging layer 21 and the glass 1, resulting in poor gluing effect and the first edging layer 21 easily separating from the glass 1.

[0079] In this embodiment, the first edging layer 21 is injection-molded onto the glass 1. Compared to adhesive bonding, the connection between the first edging layer 21 and the glass 1 is more stable. The contact length between the first edging layer 21 and the inner surface of the glass 1 can be reduced, potentially less than 5 mm or even 3 mm. This arrangement controls the contact length between the first edging layer 21 and the inner surface of the glass 1, meeting the structural requirements of a wider range of vehicle models. It also helps reduce the overall edging thickness and improves the aesthetics of the glass assembly.

[0080] In some other embodiments, as shown in FIG4 , the first edging layer 21 is provided with a first connecting portion 211, which is provided on the contact surface between the first edging layer 21 and the second edging layer 22. The first connecting portion 211 is used to increase the bonding force between the first edging layer 21 and the second edging layer 22.

[0081] Furthermore, the first connecting portion 211 is a protrusion or a groove. The first connecting portion 211 is a protrusion protruding from the surface of the first edging layer 21, or a groove recessed into the surface of the first edging layer 21. This configuration increases the contact area between the first edging layer 21 and the second edging layer 22, ensuring a tight connection between the first edging layer 21 and the second edging layer 22, and improving the adhesion between the first edging layer 21 and the second edging layer 22. In some other embodiments, the first edging layer 21 and the second edging layer 22 can also be connected by the first connecting portion 211.

[0082] In some other embodiments, the first connection portion 211 is protruding from the side surface of the first edging layer. As shown in Figure 5, the first connection portion 211 on the side surface of the first edging layer 21 protrudes outward. In actual production, if the first connection portion 211 on the side surface of the first edging layer 21 is a groove, the mold removal requirements are higher and the demolding is more difficult. Therefore, the first connection portion 211 on the side surface of the first edging layer 21 is always a raised structure.

[0083] As shown in Figures 5 and 6, in some other embodiments, the second edging layer 22 is provided with a second connecting portion 222, which is disposed on the contact surface between the second edging layer and the third edging layer. The second connecting portion 222 is used to increase the bonding strength between the second edging layer and the third edging layer 23. The second connecting portion 222 can be a protrusion protruding from the second edging layer 22 or a groove recessed in the second edging layer 22. The second connecting portion 222 on the side surface of the second edging layer 22 has a raised structure, which can reduce the mold requirements during demolding.

[0084] As shown in Figure 7 , in some other embodiments, the thickness of the first edging layer 21 is no greater than 5 mm. The thickness of the first edging layer 21 is shown as β in Figure 7 . Specifically, it can be 3 mm, 3.5 mm, 4 mm, etc. The thickness of the first edging layer 21 should not be too large, otherwise it will affect the overall thickness of the edging assembly.

[0085] As shown in Figure 7, in some other embodiments, the second edging layer 22 is provided with a mounting portion 221, which is integrally injection-molded with the second edging layer 22. The mounting portion 221 can be a guide rail, a clip, a stud, or a mounting hole. The second edging layer 22 is provided with the mounting portion 221, which is integrally injection-molded with the second edging layer 22. This simplifies the production process, eliminates complex manual assembly steps, and eliminates the need for purchased accessories, significantly reducing production costs.

[0086] As shown in Figures 8 and 9, some embodiments further include a sheet metal 3 having a first through hole extending through the sheet metal 3 in the thickness direction. The mounting portion 221 is a nail post that extends into the first through hole and is fixedly connected to the sheet metal 3.

[0087] As shown in Figure 4, in some embodiments, the nail column is provided with a fixing groove 223 for engaging with the sheet metal 3. The fixing groove 223 engages with the sheet metal 3, thereby fixing the nail column and the sheet metal 3 relatively. In some other embodiments, the third edging layer 23 is provided with a sealing tongue 231 protruding outward. The shape, number and position of the sealing tongue can be set according to actual needs. In some embodiments, the number of the sealing tongues 231 is two or more, and at least one of the sealing tongues 231 abuts against the sheet metal 3. Without limitation, the third edging layer 23 can also be provided with protrusions and depressions with installation or support functions. By providing a shape and structure that is compatible with the sheet metal 3 and the guide rail on the third edging layer 23, the sealing and structural stability of the glass assembly can be improved.

[0088] Existing double-injection molding requires wrapping around the glass to form a complete circumference, relying on the glass to support and secure the rigid molding. Otherwise, the rigid molding can easily separate from the glass and fall off after the first injection molding. This solution incorporates a soft molding inside the rigid molding, significantly improving the adhesion between the molding and the glass. This allows the first and second molding layers 21, 22 to partially connect to the glass surface, eliminating the need for a fully enclosed structure around the glass.

[0089] The edging 2 covers at least one edge of the glass. As shown in Figure 10, the edging 2 includes a first edging layer 21, a second edging layer 22, and a third edging layer 23. The first edging layer 21, the second edging layer 22, and the third edging layer 23 are injection molded to cover the edge of the glass 1. As shown in Figure 11, the first edging layer 21, the second edging layer 22, and the third edging layer 23 are injection molded to cover the left and lower edges of the glass 1. As shown in Figure 12, which is a modified example of the enlarged view of the three-material injection-molded glass assembly described in Figure 10, the edging 2 is injection molded to cover the four edges of the glass 1. The edging 2 can cover any edge of the glass 1, and the specific number and position of the covered glass edges can be adjusted according to actual needs.

[0090] Figure 12 illustrates the application of a three-component injection-molded glass assembly on a door glass. Figure 13 is an enlarged CC cross-sectional view of the three-component injection-molded glass assembly described in Figure 12. A first edging layer 21 is injection-molded onto the glass 1, covering the upper, side, and lower surfaces. A second edging layer 22 wraps around the outside of the first edging layer 21. One side of the second edging layer 22 is provided with a mounting portion 221, which serves as a guide rail. A third edging layer 23 wraps around the outside of the second edging layer 22.

[0091] Figure 14 is an enlarged cross-sectional view of the three-component injection-molded glass assembly described in Figure 12 , taken along the DD plane. The second edging layer 22 can be disposed on the first edging layer 21, partially contacting the surface of the glass 1 or completely not contacting the surface of the glass 1. A sealing tongue 231 is disposed on the outer side of the third edging layer 23, extending outward. As shown in Figure 15 , this is a modified example of the enlarged cross-sectional view of the three-component injection-molded glass assembly described in Figure 14 . The third edging layer 23, made of soft plastic, covers the hard second edging layer 22 on three sides, providing enhanced fixation. The first connecting portion 211 protrudes from the first edging layer 21.

[0092] Figure 16 is an enlarged EE cross-sectional view of the three-material injection-molded glass assembly described in Figure 12. The first edging layer 21 is injection-molded on the upper surface, side surface and lower surface of the glass 1. The second edging layer 22 is arranged on the outside of the first edging layer 21, and a mounting portion 221 is provided at the bottom of the second edging layer 22. The mounting portion 221 in Figure 16 is a nail column. The nail column includes a base and a column extending outward. A sealing tongue and other sealing structures are provided on the outside of the third edging layer 23. The number of the sealing tongues 231 is more than two, and at least one of the sealing tongues 231 is provided on the base of the mounting portion 221, and the sealing tongue 231 abuts against the sheet metal 3. By setting the sealing tongue 231 on the base of the mounting portion 221, one end of the sealing tongue 231 abuts against the sheet metal 3, so that a good matching relationship is formed between the nail column on the second edging layer 22 and the sealing tongue 231 on the third edging layer 23. The sealing tongue 231 can not only play a sealing role, but also support and fix the sheet metal 3 and the mounting portion 221, so that the installation structure of the nail column is more stable.

[0093] As shown in Figure 17, the first edging layer 21 is disposed under the glass, and a first connecting portion 211 is provided between the first edging layer 21 and the second edging layer 22 to enhance the connection stability between the first edging layer 21 and the second edging layer 22. Specifically, the first connecting portion 211 can be a groove or a protruding structure as shown in Figure 18.

[0094] As shown in Figure 19, the first edging layer 21 is disposed below the glass 1, and the second edging layer 22 is disposed on the first edging layer 21 without contact with the glass 1. A mounting portion 221 is provided at one end of the second edging layer 22. The mounting portion 221 is designed in the shape of a bracket. The second edging layer 22 and the mounting portion 221 are injection-molded from hard plastic, eliminating the need to purchase and assemble a separate bracket.

[0095] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A three-material injection-molded glass assembly, characterized in that: include: Glass; Edge wrapping, covering at least one surface of at least one edge of the glass; the edge wrapping includes a first edge wrapping layer, a second edge wrapping layer and a third edge wrapping layer; The first edge layer is injection-molded on at least one surface of the glass edge; At least a portion of the second edge layer is injection-molded and coated on the outside of the first edge layer, and the hardness of the second edge layer is greater than that of the first edge layer; The third edge layer is injection-molded and coated on at least a portion of the second edge layer. The hardness of the third edge layer is less than that of the second edge layer.

2. The three-material injection-molded glass assembly according to claim 1, characterized in that: The first edge wrapping layer is provided with a first connecting portion, and the first connecting portion is arranged on the contact surface between the first edge wrapping layer and the second edge wrapping layer.

3. The three-material injection-molded glass assembly according to claim 2, characterized in that: The first connecting portion is a protrusion or a groove.

4. The three-material injection-molded glass assembly according to claim 3, characterized in that: The first connecting portion on the side surface of the first edging layer is a protrusion.

5. The three-material injection-molded glass assembly according to claim 1, characterized in that: The second edge wrapping layer is provided with a second connecting portion, and the second connecting portion is arranged on the contact surface between the second edge wrapping layer and the third edge wrapping layer.

6. The three-material injection-molded glass assembly according to claim 1, characterized in that: The contact length between the first edging layer and the inner surface of the glass is less than 5 mm.

7. The three-material injection-molded glass assembly according to claim 1, characterized in that: The thickness of the first edge layer is no more than 5 mm.

8. The three-material injection-molded glass assembly according to claim 1, wherein: The first edging layer and the third edging layer are made of soft plastic, and the second edging layer is made of hard plastic.

9. The three-material injection-molded glass assembly according to claim 8, characterized in that: The first edge layer and the third edge layer are made of the same material.

10. The three-material injection-molded glass assembly according to claim 8, characterized in that: The Shore hardness of the soft plastic is 60-95 degrees.

11. The three-material injection-molded glass assembly according to claim 8 or 9, characterized in that: The soft plastic is TPE, PVC, PU or EPDM.

12. The three-material injection-molded glass assembly according to claim 8, wherein: The Rockwell hardness of the hard plastic is 40-95 degrees.

13. The three-injection-molded glass assembly according to claim 12, wherein: The hard plastic is PP, PVC, PA, POM, PC, ABS or SAN.

14. The three-injection-molded glass assembly according to claim 1, wherein: The second edging layer includes a mounting portion, and the mounting portion and the second edging layer are integrally injection-molded.

15. The three-injection-molded glass assembly according to claim 14, wherein: Also includes: The sheet metal is provided with a first through hole penetrating the sheet metal in a thickness direction; The mounting portion is a nail column, which extends into the first through hole and is fixedly connected to the sheet metal.

16. The three-injection-molded glass assembly according to claim 15, wherein: The nail column is provided with a fixing groove for clamping with the sheet metal.

17. The three-injection-molded glass assembly according to claim 15, wherein: The third edge layer is provided with a sealing tongue protruding outward.

18. The three-injection-molded glass assembly according to claim 17, wherein: The number of the sealing tongues is two or more, and at least one of the sealing tongues abuts against the sheet metal.

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