Door sealing strip corner inserts, door sealing strip corner structures and vehicles

Abstract

This application provides a door sealing strip corner insert, a door sealing strip corner structure, and a vehicle, belonging to the technical field of automotive sealing parts. Based on making the shape of the insert body more closely fit the corner area of ​​the door, the number and installation position of the snap-fit ​​parts are optimized, simultaneously improving the reliability of the connection between the outer rubber layer of the insert body and the sealing strip, the overall assembly strength of the insert body, and the compactness of the snap-fit ​​parts. By opening positioning holes in the three corner areas of the insert body, a three-point fixing is formed, allowing the insert body to be stably fixed in the injection mold, preventing the insert body from shifting during injection and avoiding molten material from wrapping in the wrong position. By adding positioning posts, support is formed in the direction perpendicular to the insert body plate, which can more effectively fix the position of the insert body. The auxiliary positioning flange is used to strengthen the support and ensure the structural stability of this area.

Description

Technical Field

[0001] This application belongs to the field of automotive sealing parts technology, and more specifically, relates to a door sealing strip corner insert, a door sealing strip corner structure, and a vehicle. Background Technology

[0002] Door sealing is a crucial performance characteristic affecting driving comfort and noise reduction. Generally, door seal strips are installed along the door edges. When the door is closed, the seal is achieved by the compression between the seal strip and the side panel. When the door is opened, the seal strip is exposed and does not affect the door's appearance. The distribution path of the seal strip roughly follows the edge contour of the door, and it needs to be connected to adjacent seal strips through corner joints to ensure the integrity of the sealing system.

[0003] In some luxury vehicle applications, the corner joint structure is typically designed with a larger area to address aesthetic concerns regarding the door's appearance. However, this larger area can lead to insecure installation and wobbling, negatively impacting the door's sealing performance and ultimately hindering the overall vehicle's perceived quality. Utility Model Content

[0004] The purpose of this application is to provide a door sealing strip corner insert, a door sealing strip corner structure, and a vehicle, aiming to solve the problem of insufficient firmness in the installation of large-area corner structures with car doors.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, embodiments of this application provide a door sealing strip corner insert, comprising: The insert body is set in the corner area of ​​the inner side of the car door. The insert body has a first edge, a second edge and a third edge that are connected end to end. The first edge and the second edge correspond to the adjacent two sides of the car door, respectively. At least two snap-fit ​​pieces are connected to the insert body, at least one of the snap-fit ​​pieces is located at the corner area of ​​the first edge and the third edge, and at least one of the snap-fit ​​pieces is located at the corner area of ​​the second edge and the third edge.

[0006] The corner joint structure mainly consists of an internal insert and an outer coating. The insert is a rigid component, acting as the skeleton for the coating to maintain its basic posture and ensure effective sealing contact with the door and side panels. A connector is installed on the insert, penetrating the coating to connect with the door. In existing corner joint structures, the connector is usually located in the center of the insert, and only one is typically used. This is mainly due to the limited area of ​​the insert itself. If this connector arrangement is applied to larger corner joint structures, the edges of the joint cannot be fixed, resulting in overall instability. This can lead to misalignment during use, affecting the door's appearance and directly impacting sealing performance, failing to effectively isolate driving noise.

[0007] The solution shown in this application embodiment, compared with the prior art, has an insert body that is roughly triangular in shape. The first and second edges correspond to the adjacent two sides of the car door, respectively, while the third edge faces the center area of ​​the car door. This insert can better adapt to the shape of the corner area of ​​the car door, which is beneficial for forming a large area of ​​support and is suitable for forming a large area of ​​corner structure. In this technology, at least two of the multiple snap-fit ​​pieces are respectively set in the corner areas of the first and third edges and the corner areas of the second and third edges. The beneficial effects of this solution are as follows: 1. Since the corner areas of the first and third edges and the corner areas of the second and third edges are adjacent to the sealing strip, these two areas have the highest requirement for maintaining assembly firmness. Therefore, setting at least two of the multiple snap-fit ​​parts in the corner areas of the first and third edges and the corner areas of the second and third edges respectively is beneficial to maintaining the positional stability of the mating area with the sealing strip, thereby enabling the rubber coating layer to maintain an effective mating state with the sealing strip.

[0008] 2. Two corners of the triangular insert body are formed as snap-fit ​​points, which increases the dimension of constraint on the insert body, allowing the insert body to fit closer to the car door. Furthermore, since the insert body mainly bears the load perpendicular to the insert body plate after being connected to the car door, the two-point connection method can better meet the load-bearing requirements, avoid the insert body from shaking during door opening and closing and driving, and meet the requirements for the assembly firmness of the insert body.

[0009] 3. Because the snap-fit ​​points are distributed, the load can be distributed to different snap-fit ​​points, and the structural strength requirements of individual snap-fit ​​parts can be appropriately reduced, so that the volume of each snap-fit ​​part can be appropriately reduced, thereby avoiding the problem of snap-fit ​​parts occupying too much space in the main body of the insert.

[0010] Overall, the door sealing strip corner insert of this application, by optimizing the number and installation position of the snap-fit ​​parts, further improves the reliability of the connection between the outer rubber layer of the insert body and the sealing strip, the overall assembly of the insert body, and the compactness of the snap-fit ​​parts, based on making the shape of the insert body more closely fit the corner area of ​​the door.

[0011] In conjunction with the first aspect, in one possible implementation, the insert body is provided with a glue injection positioning structure, the glue injection positioning structure including at least three positioning holes opened on the insert body, and at least one of the positioning holes is provided in the corner area of ​​the first edge and the third edge, the corner area of ​​the second edge and the third edge, and the corner area of ​​the first edge and the second edge.

[0012] In the above technical solution, since the positioning holes are respectively opened in the three corner areas of the insert body, a three-point fixation is formed, which enables the insert body to be stably fixed in the injection mold, avoiding the insert body from shifting during injection, and avoiding the molten material from being wrapped in the wrong position, which would lead to problems such as out-of-tolerance product dimensions, uneven wall thickness, appearance defects, or even the direct scrapping of the product.

[0013] In conjunction with the first aspect, in one possible implementation, the insert body is provided with a glue injection positioning structure, the glue injection positioning structure including at least three positioning posts connected to the insert body, and at least one of the positioning posts is provided in the corner areas of the first edge and the third edge, the corner areas of the second edge and the third edge, and the corner areas of the first edge and the second edge.

[0014] In the above technical solution, in addition to the positioning holes participating in fixing the insert body, a positioning post is further added. The positioning post can abut against the side wall of the injection mold and form support in the direction perpendicular to the insert body plate. This can more effectively fix the position of the insert body, prevent the insert body from shaking or shifting during injection molding, and improve the product yield.

[0015] In some embodiments, the glue injection positioning structure further includes at least three positioning holes formed on the insert body, and at least one of the positioning holes is provided in the corner area of ​​the first edge and the third edge, the corner area of ​​the second edge and the third edge, and the corner area of ​​the first edge and the second edge. Within the corner region between the first edge and the third edge, the snap-fit ​​element, the positioning hole, and the positioning post are arranged in a triangular pattern. Within the junction area of ​​the second edge and the third edge, the snap-fit ​​element, the positioning hole, and the positioning post are arranged in a triangular pattern.

[0016] The above technical solution can better meet the arrangement requirements of positioning holes, positioning posts and snap-fit ​​parts. At the same time, the snap-fit ​​parts need to extend out of the cavity while maintaining the relative sealing of the cavity of the injection mold. Therefore, the snap-fit ​​parts and the injection mold can also form a certain positioning effect. This triangular distribution method allows the two corner areas mentioned above to be better positioned during injection molding, improving the positional stability of the insert body during injection molding.

[0017] In some embodiments, the insert body has a main body injection hole, the diameter of which is smaller than the diameter of the positioning hole.

[0018] In the above technical solution, when the molten material flows into the injection hole of the main body, the material cools and solidifies in the hole, firmly locking the insert body and the encapsulation layer together, greatly enhancing the bonding force between the two and preventing them from falling off or separating due to force during use.

[0019] In conjunction with the first aspect, in one possible implementation, the second edge of the insert body is folded outward to form an auxiliary positioning flange, which corresponds to the stepped facade of the door edge.

[0020] In the above technical solution, in addition to the auxiliary positioning flange, there is also an adhesive layer. This adhesive layer is mainly used to connect with the sealing strip on the corresponding side. Therefore, the auxiliary positioning flange provides reinforcement and ensures the structural stability of this area.

[0021] In some embodiments, a buffer notch is provided between the auxiliary positioning flange and the insert body, and the buffer notch is located at the corner area of ​​the second edge and the third edge.

[0022] In the above technical solution, by setting a buffer notch, the deformation stress generated during the injection molding process is buffered and absorbed, maintaining the stability of the position and structure between the auxiliary positioning flange and the main body of the insert.

[0023] In some embodiments, the auxiliary positioning flange is provided with a flange injection hole.

[0024] The above technical solution can firmly lock the auxiliary positioning flange and the adhesive layer together, greatly enhancing the bonding force between the two and preventing them from falling off or separating due to force during use.

[0025] Secondly, this application embodiment also provides a door sealing strip corner structure, including the above-mentioned door sealing strip corner insert, and further including an adhesive layer wrapped around the door sealing strip corner insert. The shape of the adhesive layer is adapted to the shape of the insert body, and the adhesive layer can form a seal between the door and the side panel when the door is closed. The snap-fit ​​piece on the corner insert of the door sealing strip extends out of the rubber coating layer and is snap-fitted to fit the door.

[0026] Compared with the prior art, the solution shown in this application improves the overall assembly stability of the door sealing strip corner structure by adopting the above-mentioned door sealing strip corner insert. While meeting the appearance requirements of the door, it enables the sealing system on the door to effectively abut and seal with the side panel.

[0027] Thirdly, embodiments of this application also provide a vehicle including the aforementioned door sealing strip corner structure.

[0028] The solution shown in this application embodiment, compared with the prior art, by adopting the above-mentioned door sealing strip corner structure, simultaneously meets the requirements of door appearance and sealing performance, effectively isolates vehicle driving noise, and improves driving comfort. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram illustrating the assembly of the door sealing strip corner structure with the door according to an embodiment of this application. Figure 2 This is a schematic diagram illustrating the assembly of the door sealing strip corner structure and the inner door panel according to an embodiment of this application. Figure 3 This is a schematic diagram of the door sealing strip corner structure provided in the embodiments of this application; Figure 4 for Figure 3 Schematic diagram of the corner insert for the CRRC door sealing strip Figure 1 ; Figure 5 for Figure 4 Enlarged view of part A; Figure 6 A schematic diagram of the structure of the door sealing strip corner insert provided in the embodiments of this application. Figure 2 ; Figure 7 This is a front view of the door sealing strip corner insert provided in an embodiment of this application; Figure 8 This is a schematic diagram illustrating the assembly of the door sealing strip corner insert with the door according to an embodiment of this application. Figure 9 This is a front view of the door sealing strip corner structure provided in an embodiment of this application; Figure 10 for Figure 9 AA section view; Figure 11 for Figure 9 BB cross-sectional view.

[0031] In the diagram: 10. Door sealing strip corner insert; 100. Insert body; 101. First edge; 102. Second edge; 103. Third edge; 104. Fourth edge; 105. Main body injection hole; 200. Snap-fit ​​part; 210. Connecting boss; 220. Positioning bracket; 230. Snap-fit ​​body; 300. Injection positioning structure; 310. Positioning hole; 320. Positioning post; 400. Auxiliary positioning flange; 401. Flanged injection hole; 500. Buffer notch; 510. First notch section; 520. Second notch section; 20. Glue layer; 201. Snap-fit ​​adapter hole; 202. Snap-fit ​​limiting protrusion; 203. Injection clearance hole; 30. Door; 301. Door inner panel; 3011. Step elevation; 3012. Snap-fit; 302. Door outer panel. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0033] It should be noted that when a component is referred to as being "set on" another component, it can be directly on the other component or indirectly on that other component.

[0034] It should be noted that the term "inner" refers to the direction facing the crew compartment, and the term "outer" refers to the direction away from the crew compartment. Other directional terms, unless otherwise explicitly specified, such as "length," "width," "upper," "lower," "front," "rear," "top," and "bottom," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0036] The corner joint structure mainly consists of an internal insert and an outer coating. The insert is a rigid component, acting as the skeleton for the coating to maintain its basic posture and ensure effective sealing contact with the door and side panels. A connector is installed on the insert, penetrating the coating to connect with the door. In existing corner joint structures, the connector is usually located in the center of the insert, and only one is typically used. This is mainly due to the limited area of ​​the insert itself. If this connector arrangement is applied to larger corner joint structures, the edges of the joint cannot be fixed, resulting in overall instability. This can lead to misalignment during use, affecting the door's appearance and directly impacting sealing performance, failing to effectively isolate driving noise.

[0037] To resolve the above issues, please refer to the following: Figures 1 to 11 The corner insert 10 for a door sealing strip provided in this application will now be described. The corner insert 10 for a door sealing strip includes an insert body 100 and at least two snap-fit ​​pieces 200. The insert body 100 is provided corresponding to the corner area of ​​the inner side of the door 30. The insert body 100 has a first edge 101, a second edge 102 and a third edge 103 connected end to end. The first edge 101 and the second edge 102 correspond to the adjacent two sides of the door 30, respectively. At least two snap-fit ​​pieces 200 are connected to the insert body 100, wherein at least one snap-fit ​​piece 200 is located in the corner area of ​​the first edge 101 and the third edge 103, and at least one snap-fit ​​piece 200 is located in the corner area of ​​the second edge 102 and the third edge 103.

[0038] In this embodiment, the door 30 includes an inner door panel 301 and an outer door panel 302 arranged sequentially from the inside to the outside. The insert body 100 is located inside the inner door panel 301, and the snap-fit ​​member 200 is also snap-fitted and adapted to the inner door panel 301. This embodiment exemplarily shows a scheme in which the door sealing strip corner insert 10 is adapted to the corner area of ​​the bottom of the door 30 away from the door hinge. It should be understood that the door sealing strip corner insert 10 can also be adapted to the corner area of ​​other positions of the door 30, which will not be listed here.

[0039] In this embodiment, to enhance the overall structural strength of the door sealing strip corner insert 10, the insert body 100 and the snap-fit ​​part 200 are integrally connected through methods such as one-time injection molding or two-time injection molding. If one-time injection molding is used, the insert body 100 and the snap-fit ​​part 200 are made of the same material; if two-time injection molding is used, the insert body 100 and the snap-fit ​​part 200 are made of different materials. The materials of the insert body 100 and the snap-fit ​​part 200 can be nylon 66, polycaprolactam, or other materials, as long as they meet the assembly and performance requirements of the insert, no single limitation is imposed.

[0040] In this embodiment, the first edge 101 and the second edge 102 can be straight edges or curved edges, selected according to actual appearance requirements. The third edge 103 can be a straight edge or a curved edge. Considering the adaptation with the inner door panel 301, the third edge 103 is preferably designed as a curved edge that arches away from the center of the door 30. It should be noted that, considering the adaptation with the outer perimeter of the door 30, the included angle between the first edge 101 and the second edge 102 is not less than 90°, and the angles between the first edge 101 and the third edge 103, as well as between the second edge 102 and the third edge 103, are all acute angles.

[0041] The door sealing strip corner insert 10 provided in this application, compared with the prior art, has a main body 100 that is roughly triangular. The first edge 101 and the second edge 102 correspond to the adjacent two sides of the door 30, respectively, while the third edge 103 faces the center area of ​​the door 30. This insert can better adapt to the shape of the corner area of ​​the door 30, which is conducive to forming a large area of ​​support and is suitable for forming a large area of ​​corner structure. In this technology, at least two of the multiple snap-fit ​​pieces 200 are respectively set in the corner areas of the first edge 101 and the third edge 103 and the corner areas of the second edge 102 and the third edge 103. The beneficial effects of this solution are as follows: 1. Since the corner areas of the first edge 101 and the third edge 103, as well as the corner areas of the second edge 102 and the third edge 103, are all adjacent to the sealing strip, these two areas have the highest requirement for maintaining assembly firmness. Therefore, setting at least two of the multiple snap-fit ​​pieces 200 in the corner areas of the first edge 101 and the third edge 103, as well as the corner areas of the second edge 102 and the third edge 103, is beneficial to maintaining the positional stability of the mating area with the sealing strip, thereby enabling the adhesive layer 20 to maintain an effective mating state with the sealing strip.

[0042] 2. Two corners of the triangular insert body 100 are formed with snap-fit ​​points, which increases the dimension of the constraint on the insert body 100, allowing the insert body 100 to fit closer to the door 30. Furthermore, since the insert body 100 mainly bears the load perpendicular to the surface of the insert body 100 after being connected to the door 30, the two-point connection method can better meet the load-bearing requirements and prevent the insert body 100 from shaking during door opening and closing and driving, thus meeting the requirement for the assembly firmness of the insert body 100.

[0043] 3. Because the snap-fit ​​points are distributed, the load can be distributed to different snap-fit ​​points, and the structural strength requirements of a single snap-fit ​​200 can be appropriately reduced, so that the volume of each snap-fit ​​200 can be appropriately reduced, thereby avoiding the problem of the snap-fit ​​200 occupying too much space in the insert body 100.

[0044] Overall, the door sealing strip corner insert 10 of this application, based on making the shape of the insert body 100 fit the corner area of ​​the door 30 better, optimizes the number and installation position of the snap-fit ​​parts 200, thereby improving the reliability of the connection between the outer rubber layer 20 of the insert body 100 and the sealing strip, the overall assembly of the insert body 100, and the compactness of the snap-fit ​​parts 200.

[0045] The specific distribution of the 200 connectors is illustrated in the following example: 1) The snap-fit ​​connectors 200 are divided into two groups, with one group of snap-fit ​​connectors 200 provided in each of the two corner areas of the insert body 100. More specifically, each group includes one snap-fit ​​connector 200 (e.g., Figure 4 (as shown), or each group contains at least two card connectors 200.

[0046] 2) The snap-fit ​​pieces 200 are divided into three groups. A group of snap-fit ​​pieces 200 is provided for the two corner areas of the insert body 100 and the corner areas of the first edge 101 and the second edge 102. More specifically, each group includes one snap-fit ​​piece 200, or each group contains at least two snap-fit ​​pieces 200.

[0047] 3) The snap-fit ​​pieces 200 are divided into three groups, with one group of snap-fit ​​pieces 200 each located at the two corner areas of the insert body 100 and at the center of the insert body 100. More specifically, each group includes one snap-fit ​​piece 200, or each group contains at least two snap-fit ​​pieces 200.

[0048] In some embodiments, see Figure 4 , Figure 6 and Figure 7 The first edge 101 and the third edge 103 are connected by a fourth edge 104. The length of the fourth edge 104 is less than the length of the first edge 101 and also less than the length of the third edge 103. The fourth edge 104 is set at an angle to the first edge 101, and also at an angle to the third edge 103. In this embodiment, the fourth edge 104 is designed between the first edge 101 and the third edge 103 to avoid sharp corners between the first edge 101 and the third edge 103, which could cause the area corresponding to the adhesive layer 20 to be easily damaged due to stress concentration. It can also accommodate the flat-cut design where the end of the adhesive layer 20 meets the sealing strip.

[0049] Optionally, to avoid stress concentration points within the adhesive layer 20, the first edge 101 and the fourth edge 104, as well as the third edge 103 and the fourth edge 104, are transitioned by rounded corners.

[0050] Optionally, the fourth edge 104 is set at an obtuse angle to the first edge 101, and the fourth edge 104 is set at an acute angle to the third edge 103. Specifically, the obtuse angle is 95°~110° (e.g., 100°, 105°), and the acute angle is 75°~89° (e.g., 78°, 81°, 85°). By reasonably setting the above included angles, the shape of the insert body 100 can be better matched with the outer periphery of the adhesive layer 20, so that the insert body 100 can provide better support for the adhesive layer 20.

[0051] In some embodiments, see Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 10 The insert body 100 is provided with a glue injection positioning structure 300, which includes at least three positioning holes 310 on the insert body 100. At least one positioning hole 310 is provided at the corner areas of the first edge 101 and the third edge 103, the corner areas of the second edge 102 and the third edge 103, and the corner areas of the first edge 101 and the second edge 102. The door sealing strip corner insert 10 and the outer rubber coating layer 20 are formed by secondary injection molding. The positioning holes 310 engage with corresponding positioning protrusions in the injection mold, fixing the insert body 100 in the injection mold. Because the positioning holes 310 are respectively opened at the three corner areas of the insert body 100, a three-point fixation is formed, ensuring that the insert body 100 is stably fixed in the injection mold. This prevents the insert body 100 from shifting during injection molding, avoiding molten material from being wrapped in the wrong position, which could lead to dimensional errors, uneven wall thickness, appearance defects, or even product scrap.

[0052] The distribution of positioning holes 310 in each corner area is illustrated below: one positioning hole 310 is provided in each corner area (e.g., Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 10 (as shown), or, at least two positioning holes 310 are provided in each corner area. The actual number of positioning holes 310 is selected according to the structure of the insert body 100, and will not be listed here.

[0053] In some embodiments, see Figure 4 , Figure 6 , Figure 7 , Figure 8 and Figure 10The insert body 100 is provided with a glue injection positioning structure 300, which includes at least three positioning posts 320 connected to the insert body 100. At least one positioning post 320 is provided at the corner areas of the first edge 101 and the third edge 103, the corner areas of the second edge 102 and the third edge 103, and the corner areas of the first edge 101 and the second edge 102. The positioning posts 320 are integrally formed with the insert body 100 by one-time injection molding or two-time injection molding. The material of the positioning posts 320 can be nylon 66 or polycaprolactam, etc.

[0054] In this embodiment, the positioning post 320 can be used alone without the positioning hole 310. In this case, multiple positioning posts 320 are respectively set on different sides of the insert body 100 to achieve double-sided support. Correspondingly, a positioning recess is opened on the cavity side wall of the plastic mold, and the positioning post 320 is locked in the positioning recess to fix the insert body 100 in the cavity of the injection mold.

[0055] In other scenarios, this embodiment further adds a positioning post 320 to the positioning hole 310 for fixing the insert body 100. The positioning post 320 can abut against the side wall of the injection mold and form support in a direction perpendicular to the plate surface of the insert body 100. This can more effectively fix the position of the insert body 100, prevent the insert body 100 from shaking or shifting during injection molding, and improve the product yield.

[0056] In scenarios where the positioning holes 310 and positioning posts 320 are used in combination, the positioning posts 320 on the three corner areas of the insert body 100 are simultaneously located on the same side of the insert body 100, or some positioning posts 320 are located on one side of the insert body 100, and the remaining positioning posts 320 are located on the other side of the insert body 100, achieving dual-sided support positioning. This embodiment shows an example in which all positioning posts 320 are set on the outside of the insert body 100, which can cooperate with the positioning protrusions on the injection mold to achieve dual-sided clamping and positioning of the insert body 100, which not only ensures the reliability of positioning, but also reduces the difficulty of setting the positioning posts 320.

[0057] Because there are machining and assembly errors between the positioning pin 320 on the insert body 100 and the injection mold, any slight angular deviation would lead to poor contact if planar contact were used, affecting the reliability of the support positioning. To solve this problem, the end face of the positioning pin 320 is spherical. By having the spherical surface of the positioning pin 320 contact the plane of the injection mold, it can adaptively adjust to the optimal contact state, ensuring the stability and uniformity of the support. At the same time, the stress distribution of the spherical contact is more uniform, which reduces indentation or wear on the inner wall of the mold compared to sharp corners or planar edge contact, thus extending the mold life.

[0058] In some embodiments, see Figure 7 If the injection positioning structure 300 includes both a positioning hole 310 and a positioning post 320, then in the corner area between the first edge 101 and the third edge 103, the snap-fit ​​200, the positioning hole 310, and the positioning post 320 are arranged in a triangular pattern; in the corner area between the second edge 102 and the third edge 103, the snap-fit ​​200, the positioning hole 310, and the positioning post 320 are also arranged in a triangular pattern. This design can better meet the arrangement requirements of the positioning hole 310, the positioning post 320, and the snap-fit ​​200. At the same time, the snap-fit ​​200 needs to extend out of the cavity while maintaining the relative sealing of the injection mold cavity. Therefore, the snap-fit ​​200 and the injection mold can also form a certain positioning effect. This triangular distribution allows the two corner areas mentioned above to be better positioned during injection molding, improving the positional stability of the insert body 100 during injection molding.

[0059] In some embodiments, see Figure 4 , Figures 6 to 8 The insert body 100 has a main body glue injection hole 105, the diameter of which is smaller than that of the positioning hole 310. When molten material flows into the main body glue injection hole 105, the material cools and solidifies inside the hole, forming a structure like a "nail" or "anchor", which firmly locks the insert body 100 and the adhesive layer 20 together, greatly enhancing the bonding force between the two and preventing them from falling off or separating due to force (such as tension, torsion, shear) during use.

[0060] Furthermore, if the size of the main body injection hole 105 is too large, the material layer at the hole will be too thin when the amount of material used in the secondary injection molding remains unchanged. This will affect the appearance and sealing performance of the overlay layer 20, requiring more material to be used for filling during the secondary injection molding, thus affecting production costs. It can also easily affect the size of the insert body 100 due to an excessively large opening, thereby affecting its support reliability with the overlay layer 20. This embodiment limits the size of the main body injection hole 105 to avoid it becoming too large.

[0061] It should be noted that the number and density of the main body injection holes 105 on the insert body 100 are set according to actual performance requirements, and the hole density should be kept as uniform as possible.

[0062] Optionally, the outer diameter of the positioning post 320 is smaller than the inner diameter of the positioning hole 310, and the outer diameter of the positioning post 320 is not smaller than the inner diameter of the main body injection hole 105. For example, the inner diameter of the main body injection hole 105 is 2mm~4mm (e.g., 2.5mm, 3mm), the outer diameter of the positioning post 320 is 3mm~5mm (e.g., 3.5mm, 4mm), and the inner diameter of the positioning hole 310 is 5mm~7mm (e.g., 6mm, 6.5mm).

[0063] In some embodiments, see Figures 4 to 8 The second edge 102 of the insert body 100 is folded outward to form an auxiliary positioning flange 400, which corresponds to the stepped facade 3011 of the edge of the door 30. The sealing strip is generally set around the stepped facade 3011 formed by the edge of the inner door panel 301. The auxiliary positioning flange 400 is also wrapped with an adhesive layer 20. The adhesive layer 20 is mainly used to connect with the sealing strip on the corresponding side. Therefore, the auxiliary positioning flange 400 provides reinforcement and support to ensure the structural stability of this area.

[0064] In this embodiment, the auxiliary positioning flange 400 and the insert body 100 are integrally formed, and the auxiliary positioning flange 400 and the insert body 100 are set at an obtuse angle so as to fit the contour of the step facade 3011 and the inner side of the door inner panel 301.

[0065] During the process of installing the insert body 100 into the injection mold, the connection area between the auxiliary positioning flange 400 and the insert body 100 is prone to deformation. Therefore, based on the above embodiment, see... Figure 4 , Figure 6 , Figure 7 and Figure 8 A buffer notch 500 is provided between the auxiliary positioning flange 400 and the insert body 100, and the buffer notch 500 is located at the corner area of ​​the second edge 102 and the third edge 103. The opening direction of the buffer notch 500 is approximately parallel to the second edge 102. By providing the buffer notch 500, deformation stress is buffered and absorbed, maintaining the stability of the position and structure between the auxiliary positioning flange 400 and the insert body 100.

[0066] In some specific embodiments of the buffer gap 500, see [link to specific implementation]. Figure 4 , Figure 6 , Figure 7 and Figure 8 The buffer notch 500 includes a first notch segment 510 and a second notch segment 520 connected sequentially. The opening edge of the second notch segment 520 extends to the edge of the insert body 100, and the width of the second notch segment 520 is greater than the width of the first notch segment 510. The buffer notch 500 is designed in segments. Because the area near the third edge 103 of the insert body 100 has a more severe deformation tendency, the width of the second notch segment 520 corresponding to this area is designed to be larger. This satisfies the absorption of deformation stress and also minimizes the opening area of ​​the buffer notch 500, avoiding affecting the overall structural strength of the door sealing strip corner insert 10.

[0067] In some embodiments, see Figure 4 , Figure 6 , Figure 7 and Figure 8The auxiliary positioning flange 400 has a flange injection hole 401 to firmly lock the auxiliary positioning flange 400 and the adhesive layer 20 together, which greatly enhances the bonding force between the two and prevents them from falling off or separating due to force (such as tension, torsion, shear) during use.

[0068] Optionally, the diameter of the flanged glue injection hole 401 is the same as the diameter of the main body glue injection hole 105. The opening direction of the flanged glue injection hole 401 is the same as that of the main body glue injection hole 105 (e.g., Figure 7 (as shown), or, the opening direction of the flange injection hole 401 is parallel to the thickness direction of the auxiliary positioning flange 400.

[0069] In some embodiments, see Figure 5 and Figure 11 The snap-fit ​​component 200 includes a connecting boss 210, at least two positioning brackets 220, and at least two snap-fit ​​bodies 230. The connecting boss 210 is connected to the outer side of the insert body 100; the snap-fit ​​bodies 230 are connected to the outer end face of the connecting boss 210 and are spaced apart along the circumference of the connecting boss 210; the positioning brackets 220 are connected to the outer end face of the connecting boss 210, and the snap-fit ​​bodies 230 and positioning brackets 220 are alternately distributed along the circumference of the connecting boss 210. The snap-fit ​​bodies 230 can be snapped and adapted to the latch 3012 on the inner door panel 301 in the inward and outward directions, while the positioning brackets 220 can abut against the inner edge of the latch 3012 to limit the displacement of the snap-fit ​​component 200 in the direction perpendicular to the opening direction of the latch 3012, thereby achieving multi-directional limiting and ensuring the stability of the position between the insert body 100 and the inner door panel 301. The connecting boss 210 serves as a transitional connector between the insert body 100 and the positioning bracket 220 and the buckle body 230, reducing the difficulty of setting up the positioning bracket 220 and the buckle body 230.

[0070] Optionally, the positioning bracket 220 is a plate-shaped component, which reduces the space occupied between two adjacent buckle bodies 230. At the same time, the edge of the positioning bracket 220 can abut and limit the inner edge of the buckle 3012, making the structure of the buckle 200 more compact while meeting the assembly requirements with the door 30.

[0071] Optionally, the outer end of the buckle body 230 and the outer end of the positioning bracket 220 are connected as one piece to enhance the integrity of the buckle 200 and improve the reliability of the assembly with the door 30 by increasing the structural strength of the buckle 200.

[0072] More specifically, the various positioning brackets 220 are also connected as a whole, further enhancing the integrity and structural strength of the snap-fit ​​component 200.

[0073] Based on the same inventive concept, this application embodiment further provides a door sealing strip corner structure, including the aforementioned door sealing strip corner insert 10, and also including an adhesive layer 20 wrapped around the door sealing strip corner insert 10. The shape of the adhesive layer 20 is adapted to the shape of the insert body 100. When the door 30 is closed, the adhesive layer 20 can form a seal between the door 30 and the side panel. The snap-fit ​​member 200 on the door sealing strip corner insert 10 extends out of the adhesive layer 20 and is snap-fitted and adapted to the snap-fit ​​opening 3012 on the door 30.

[0074] In this embodiment, the stiffness of the corner insert 10 of the door sealing strip is greater than the stiffness of the rubber coating layer 20. The rubber coating layer 20 is a component with a certain degree of elasticity, and its material can be EPDM rubber, modified polyvinyl chloride, etc. The material of the rubber coating layer 20 is the same as that of the sealing strip.

[0075] Compared with the prior art, the door sealing strip corner structure provided in this application improves the overall assembly stability of the door sealing strip corner structure by adopting the aforementioned door sealing strip corner insert 10. Furthermore, since the shape of the rubber layer 20 is adapted to the shape of the insert body 100, the overall shape of the door sealing strip corner structure can better fit the shape of the corner area of ​​the door 30. While meeting the requirements of the exquisite appearance of the door 30, it enables the sealing system on the door 30 to effectively abut and seal with the side panel.

[0076] In some embodiments, see Figure 2 and Figure 3 The rubber coating layer 20 is provided with a snap-fit ​​adapter hole 201 for the snap-fit ​​member 200 to extend out, and a snap-fit ​​limiting protrusion 202 is provided on the outer periphery of the snap-fit ​​adapter hole 201. The snap-fit ​​limiting protrusion 202 can abut against the inner side of the door inner panel 301 to improve the reliability of the contact between the rubber coating layer 20 and the door inner panel 301 and avoid the problem of poor contact in some areas caused by large-area contact. Preferably, the snap-fit ​​limiting protrusion 202 is a protrusion continuously distributed along the circumference of the snap-fit ​​adapter hole 201.

[0077] In some embodiments, see Figure 9 and Figure 10 The overlay layer 20 is provided with a glue injection clearance hole 203 corresponding to the positioning hole 310. The diameter of the glue injection clearance hole 203 is determined by the positioning protrusion inside the injection mold. In this embodiment, the diameter of the glue injection clearance hole 203 is larger than the diameter of the positioning hole 310.

[0078] In some embodiments, the portion of the adhesive layer 20 adjacent to the corner region of the first edge 101 and the second edge 102 is fixed to the inner door panel 301 by means of adhesive or the like.

[0079] Based on the same inventive concept, this application also provides a vehicle including the above-described door sealing strip corner structure.

[0080] Compared with the prior art, the vehicle provided in this application, by adopting the above-mentioned door sealing strip corner structure, simultaneously meets the requirements of the door 30 for appearance and sealing, effectively isolates vehicle driving noise, and improves driving comfort.

[0081] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A door sealing strip corner insert, characterized in that, include: The insert body (100) is provided in the corner area of ​​the inner side of the door (30). The insert body (100) has a first edge (101), a second edge (102) and a third edge (103) connected end to end. The first edge (101) and the second edge (102) correspond to the adjacent two sides of the door (30) respectively. At least two snap-fit ​​pieces (200) are connected to the insert body (100), at least one of the snap-fit ​​pieces (200) is located at the corner area of ​​the first edge (101) and the third edge (103), and at least one of the snap-fit ​​pieces (200) is located at the corner area of ​​the second edge (102) and the third edge (103).

2. The door sealing strip corner insert as described in claim 1, characterized in that, The insert body (100) is provided with a glue injection positioning structure (300), which includes at least three positioning holes (310) opened on the insert body (100). The corner area of ​​the first edge (101) and the third edge (103), the corner area of ​​the second edge (102) and the third edge (103), and the corner area of ​​the first edge (101) and the second edge (102) are all provided with at least one of the positioning holes (310).

3. The door sealing strip corner insert as described in claim 1 or 2, characterized in that, The insert body (100) is provided with a glue injection positioning structure (300), which includes at least three positioning posts (320) connected to the insert body (100). At least one of the positioning posts (320) is provided in the corner area of ​​the first edge (101) and the third edge (103), the corner area of ​​the second edge (102) and the third edge (103), and the corner area of ​​the first edge (101) and the second edge (102).

4. The door sealing strip corner insert as described in claim 3, characterized in that, The glue injection positioning structure (300) further includes at least three positioning holes (310) opened on the insert body (100). The corner area of ​​the first edge (101) and the third edge (103), the corner area of ​​the second edge (102) and the third edge (103), and the corner area of ​​the first edge (101) and the second edge (102) are each provided with at least one of the positioning holes (310). In the corner area between the first edge (101) and the third edge (103), the snap-fit ​​member (200), the positioning hole (310) and the positioning post (320) are arranged in a triangle; In the corner area between the second edge (102) and the third edge (103), the snap-fit ​​member (200), the positioning hole (310) and the positioning post (320) are arranged in a triangle.

5. The door sealing strip corner insert as described in claim 2, characterized in that, The insert body (100) has a main body glue injection hole (105), the diameter of which is smaller than the diameter of the positioning hole (310).

6. The door sealing strip corner insert as described in claim 1, characterized in that, The second edge (102) of the insert body (100) is folded outward to form an auxiliary positioning flange (400), which is provided corresponding to the stepped facade (3011) of the edge of the door (30).

7. The door sealing strip corner insert as described in claim 6, characterized in that, A buffer notch (500) is provided between the auxiliary positioning flange (400) and the insert body (100), and the buffer notch (500) is located at the corner area of ​​the second edge (102) and the third edge (103).

8. The door sealing strip corner insert as described in claim 6, characterized in that, The auxiliary positioning flange (400) is provided with a flange injection hole (401).

9. A door sealing strip corner structure, characterized in that, The door sealing strip corner insert as described in any one of claims 1-8 is further comprising an overlay layer (20) covering the door sealing strip corner insert, wherein the shape of the overlay layer (20) is adapted to the shape of the insert body (100), and the overlay layer (20) can form a seal between the door (30) and the side panel when the door (30) is closed; The snap-fit ​​piece (200) on the corner insert of the door sealing strip extends out of the rubber layer (20) and snaps into the door (30).

10. A vehicle, characterized in that, Includes the door sealing strip corner structure as described in claim 9.

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