Lower connecting corner insert structure suitable for B-column door slot strip, buffering method and automobile

Abstract

The invention belongs to the technical field of automobile sealing structures, and provides an insert structure suitable for a B-column door slot strip lower connecting corner, a buffering method and an automobile. The insert structure comprises a connecting corner body, an insert plate and a decoration plate; wherein the connecting corner body is installed at the end of a plaque of the automobile, the embedded plate is embedded in the connecting corner body, the connecting corner body can be connected with the plaque through the embedded plate, and the surface of the connecting corner body is coated with a sealing strip. Through the synergistic effect of the two or more buckles on the insert, accurate alignment installation can be achieved, vibration energy can be effectively absorbed, the abnormal sound risk is reduced, and it is ensured that the B column door slot sealing strip, the vehicle door decoration plate and the side wall metal plate are tightly attached under different working conditions; the phenomenon of loosening or seam opening of the insert caused by vibration in the running process of a vehicle is thoroughly eliminated, triple breakthroughs of installation stability, sealing reliability and durability are achieved on the whole, and the technical bottlenecks that a traditional insert is prone to loosening and frequent in abnormal sound are effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile sealing structures, and in particular relates to a lower corner insert structure applicable to a B-pillar door seam strip, a buffering method and an automobile. Background Art

[0002] Against the backdrop of rapidly advancing technology and increasingly diverse consumer demands, the pace of transformation and upgrading in the automotive industry has significantly accelerated. Modern automobiles have transcended the confines of traditional transportation, becoming integrated vehicles that combine technology, art, and individuality. They are more than just a means of transportation; they reflect the owner's tastes and lifestyle. Consequently, the design and manufacturing of automobiles is increasingly prioritizing comfort and driving experience, with sealing performance becoming a key consideration. Optimizing sealing performance not only enhances the driving experience but also directly impacts the vehicle's overall quality, ensuring a more comfortable and enjoyable driving experience for both drivers and passengers.

[0003] In the design of traditional B-pillar door seals, the positioning structure of the B-pillar door seal's corner insert is directly related to the door's sealing performance and durability. As a key component supporting the vehicle's rigidity, the B-pillar's seal, where it mates with the door, must maintain a stable fit and seal under complex operating conditions such as high-speed wind pressure, rain, and fluctuating temperatures. As the core connecting component of the B-pillar door seal at the corner of the B-pillar and door sheet metal, the corner insert's positioning accuracy and structural reliability are particularly important.

[0004] In the existing technology, the corner inserts of the B-pillar door seam sealing strip mostly use a single clip or adhesive fixation method. Although basic connection can be achieved, there are still technical pain points: Failure of the insert clip: The B-pillar area vibrates frequently during vehicle driving. Traditional insert clips are prone to local fatigue cracking due to stress concentration, resulting in an increase in the gap between the B-pillar door seam sealing strip and the installation surface, leading to water leakage and reduced NVH performance. Summary of the Invention

[0005] In order to solve the problems in the background technology, the present invention proposes a lower corner insert structure applicable to a B-pillar door seam strip, a buffering method and a vehicle.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A corner insert structure suitable for the lower corner of a B-pillar door seam, comprising a corner insert body, an insert plate and a decorative plate; The panel is installed in the corner body, and n buckles are provided on the surface, where n≥2; The buckle comprises an integrally connected joint and a spiral support; the cross section of the joint is a trapezoidal barb structure, and an S-shaped through groove is provided at the end of the joint; The end surface of the decorative plate facing the B-pillar of the car is provided with connection holes having the same number as the buckles; The buckle is inserted into the connecting hole through a joint; and the spiral support is at least partially immersed in the connecting hole.

[0007] Preferably, two clips are installed on the panel surface, and the two clips are respectively located at two ends of the panel surface.

[0008] Preferably, a surface of the panel facing the decorative plate is further provided with a plurality of pads, and the size of the pads along the axial direction of the buckle is smaller than the size of the threaded support along the axial direction of the buckle.

[0009] Preferably, a door sheet metal is also installed inside the decorative panel, and the door sheet metal is arranged along the length direction of the automobile body.

[0010] Preferably, the buckle is fixedly connected or rotatably connected to the panel.

[0011] Preferably, the corner body and the panel are both made of EPDM rubber.

[0012] Preferably, the surface of the corner body is covered with a sealing strip, and the sealing strip is used to seal the gap between the decorative panel and the B-pillar of the car.

[0013] Preferably, the interior of the spiral support is a spiral hollow structure.

[0014] A buffering method comprising the following steps: After the spiral support is partially immersed in the connection hole, the impact on the buckle is reduced.

[0015] A car is equipped with the above-mentioned lower corner insert structure suitable for B-pillar door seam strips.

[0016] Beneficial effects of the present invention: 1. Through the synergistic action of two or more clips on the insert, this invention enables precise alignment and effective absorption of vibration energy, reducing the risk of abnormal noise and ensuring a tight fit between the B-pillar door seal, door trim, and side panel under different operating conditions. This completely eliminates insert loosening or separation caused by vehicle vibration during driving. The overall structure achieves a triple breakthrough in installation stability, sealing reliability, and durability, effectively resolving technical bottlenecks such as the easy loosening and frequent abnormal noise of traditional inserts. 2. The present invention provides a lower corner insert structure for B-pillar door seam strips, which can maximize the firmness of the B-pillar door seam strip corner and the door trim panel, while also meeting NVH requirements to the greatest extent possible and improving the reliability of the part. 3. The buckle of the present invention is provided with a spiral support. When the spiral support 2012 is impacted, its spiral hollow structure will undergo elastic deformation, absorbing the impact force through deformation and converting the impact force into its own elastic potential energy, thereby reducing the impact on the buckle, effectively protecting the lower corner insert structure of the B-pillar door seam and surrounding components, and improving the safety and reliability of the vehicle. 4. The present invention forms a sealed space between the door decorative panel, the corner body and the B-pillar by installing the clips in close cooperation with the door decorative panel, thereby improving the sealing performance. In addition, the insert of the present invention forms a multi-directional constraint through the composite design with the corner body, avoiding the problem of easy loosening of traditional single-point clips, and effectively alleviating the problem of sealing failure caused by damage to the sealing strip clips.

[0017] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic diagram of a lower corner insert structure applicable to a B-pillar door seam strip according to the present invention is shown; Figure 2 shows a schematic structural diagram of the panel of the present invention; Figure 3 A schematic structural diagram of the buckle of the present invention is shown; Figure 4 A schematic structural diagram of the decorative plate of the present invention is shown; Figure 5 It shows a schematic structural diagram of the corner body, panel and decorative plate of the present invention after being matched; Figure 6 A schematic diagram showing the coordination of the front door, rear door and trim panel at the B-pillar position of the present invention is shown.

[0020] In the figure: 1. Angle connection body; 2. Inlay panel; 201. Buckle; 2011. Connector; 2012. Screw support; 202. Pad; 3. Trim panel; 301. Connection hole; 4. Door sheet metal; 5. Front door; 6. Rear door. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0022] like Figure 1 The figure shows a corner insert structure suitable for use under B-pillar door seams. It primarily consists of a corner insert body 1, an insert panel 2, and a trim panel 3. The corner insert body 1 serves as the foundation, mounted on the end of the vehicle's trim panel 3. The insert panel 2 is pre-embedded within the corner insert body 1, connecting the corner insert body 1 to the trim panel 3 via the insert panel 2. Furthermore, the corner insert body 1 is coated with a sealing strip that tightly fits the gap between the trim panel 3 and the vehicle's B-pillar, effectively preventing rain, dust, and noise from entering the vehicle interior, thereby improving the vehicle's sealing performance and enhancing driving comfort.

[0023] like Figure 2 As shown, the panel 2 is provided with several clips 201 on its surface, which allow it to be mounted on the trim panel 3. The clips 201 include an integral joint 2011 and a screw support 2012. The joint 2011 has a trapezoidal barbed cross-section. This unique shape creates a reliable mechanical locking effect when snapped into the connection hole 301, effectively preventing relative displacement between the panel 2 and the trim panel 3.

[0024] like Figure 3 As shown, an S-shaped through groove is provided at the end of the connector 2011, which not only reduces the overall weight of the buckle 201, but also increases the flexibility of the connector 2011 to a certain extent, so that it can better adapt to different installation errors during the clamping process, further improving the stability and reliability of the connection.

[0025] In addition, if Figure 4 As shown, the end surface of the trim panel 3 facing the vehicle's B-pillar is provided with connection holes 301, the same number as the clips 201. The clips 201 engage with the connection holes 301 via connectors 2011, securing the panel 2 and trim panel 3. The spiral support 2012 is at least partially immersed in the connection holes 301. Leveraging the characteristics of its spiral structure, it can elastically deform when subjected to external forces, thereby providing a buffering effect, particularly absorbing radial impact forces from the clips 201. Furthermore, the interior of the spiral support 2012 is a spirally hollowed structure. This design further reduces its weight while maintaining its strength, while also increasing its elastic deformation space, significantly improving its buffering performance.

[0026] Optionally, in Figure 2 To ensure a balanced and stable connection between the panel 2 and the trim panel 3, two clips 201 are preferably installed on the surface of the panel 2, with the two clips 201 located at both ends of the panel 2. This symmetrical design evenly distributes the connection force and avoids connection failure caused by excessive local force.

[0027] Optionally, in Figure 3 In the example, the surface of the panel 2 facing the trim panel 3 is also provided with several spacers 202. The spacers 202 have a smaller axial dimension along the buckle 201 than the spiral support 2012. The spacers 202 create a gap between the panel 2 and the trim panel 3, providing space for the elastic deformation of the spiral support 2012 and ensuring a cushioning effect. Furthermore, they allow for fine-tuning of the relative position of the panel 2 and the trim panel 3, improving installation accuracy. Furthermore, because the spacers 202 are shorter than the spiral support 2012, the spiral support 2012 can be partially submerged in the connection hole 301.

[0028] like Figure 5 As shown, the trim panel 3 is internally mounted with a door sheet metal 4, which runs along the length of the vehicle body. The door sheet metal 4 provides a solid support foundation for the entire structure, enhancing its overall strength and rigidity, enabling it to better withstand various external forces during vehicle operation.

[0029] Optionally, the buckle 201 and the panel 2 can be fixedly connected or rotatably connected according to actual needs. The fixed connection method provides higher connection strength and is suitable for applications requiring higher stability. The rotatable connection method provides a certain degree of rotational freedom for the buckle 201, which can better adapt to different installation angles and position deviations during installation, improving installation convenience and flexibility.

[0030] Optionally, both the corner body 1 and the panel 2 are made of EPDM rubber. EPDM rubber has excellent weather resistance, aging resistance, corrosion resistance, good elasticity and sealing properties, and can operate stably for a long time under various complex environmental conditions, ensuring the service life and sealing performance of the corner insert structure.

[0031] It should be noted that because the corner body 1 and panel 2 are made of EPDM rubber, they can be manufactured separately through injection molding. During the injection molding process, parameters such as mold temperature, injection pressure, and injection time are strictly controlled to ensure that the dimensional accuracy and surface quality of the corner body 1 and panel 2 meet the design requirements.

[0032] The following combination Figure 1-Figure 5 The following describes the assembly process for the lower corner insert structure of the B-pillar door seam: First, install the panel 2 into the corner body 1 to ensure that the panel 2 is positioned accurately in the corner body 1 , and auxiliary positioning can be performed by positioning pins or slots. Specifically, the panel 2 can be partially embedded in the corner body 1 .

[0033] Next, install the clip 201 into the pre-machined mounting hole on the surface of the panel 2. If a fixed connection is used, the clip 201 can be firmly fixed to the panel 2 by welding, gluing, or interference fit. If a rotating connection is used, a rotating shaft or bearing is placed in the mounting hole to allow the clip 201 to rotate freely relative to the panel 2.

[0034] Finally, assemble the angle body 1 with the panel 2, buckle 201 and spacer 202 installed and the trim panel 3. Align the joint 2011 of the buckle 201 with the connection hole 301 on the trim panel 3, and press the angle body 1 and the trim panel 3 together with force to make the joint 2011 snap into the connection hole 301. At the same time, ensure that the spiral support 2012 is at least partially immersed in the connection hole 301. Finally, the following is obtained. Figure 5 The structure shown is for illustration only, showing the positional relationship of each structure. During the assembly process, the assembly force can be controlled by appropriate tools or equipment to ensure the reliability and stability of the connection.

[0035] Below Figure 1-Figure 5 The buffering process applicable to the lower corner insert structure of the B-pillar door seam is explained as follows: When the vehicle is subjected to external impacts while driving, especially impacts radially from buckle 201, the structural design of spiral support 2012 partially submerged in connection hole 301 provides a cushioning effect. When impacted, the spiral hollow structure of spiral support 2012 elastically deforms, absorbing the impact force and converting it into its own elastic potential energy. This mitigates the impact on buckle 201, especially radial impacts. This effectively protects the lower corner insert structure of the B-pillar door seam and surrounding components, enhancing the safety and reliability of the vehicle.

[0036] A car equipped with Figure 1-Figure 5 The structure of the lower corner insert of the B-pillar door seam is applicable, such as Figure 6 As shown, this structure can be widely used in various types of vehicles. The vehicle includes a front door 5 and a rear door 6, and a trim panel 3 is installed below each of the front door 5 and the rear door 6. Finally, by installing this structure at the lower corner of the vehicle's B-pillar door seam, it can effectively improve the vehicle's sealing performance, comfort, and safety, meeting the needs of vehicle users for a high-quality driving experience.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A corner insert structure suitable for B-pillar door seam strips, characterized in that: It comprises a corner body (1), a panel (2) and a decorative panel (3); The panel (2) is installed in the corner body (1), and n buckles (201) are provided on the surface, where n≥(2); The buckle (201) comprises a joint (2011) and a spiral support (2012) connected in one piece; the cross section of the joint (2011) is a trapezoidal barb structure, and an S-shaped through-groove is provided at the end of the joint (2011); The decorative plate (3) is provided with connection holes (301) on the end surface facing the B-pillar of the automobile, the number of which is the same as that of the buckles (201); The buckle (201) is snapped into the connecting hole (301) via the joint (2011); the spiral support (2012) is at least partially immersed in the connecting hole (301).

2. The lower corner insert structure for B-pillar door seam strip according to claim 1, characterized in that: Two buckles (201) are installed on the surface of the panel (2), and the two buckles (201) are respectively located at two ends of the surface of the panel (2).

3. The lower corner insert structure for B-pillar door seam strip according to claim 1, characterized in that: A plurality of pads (202) are also provided on the surface of the panel (2) facing the decorative plate (3), and the axial dimensions of the pads (202) along the buckle (201) are smaller than the axial dimensions of the spiral support (2012) along the buckle (201).

4. The lower corner insert structure for B-pillar door seam strip according to claim 1, characterized in that: A door sheet metal (4) is also installed inside the decorative panel (3), and the door sheet metal (4) is arranged along the length direction of the automobile body.

5. The lower corner insert structure for B-pillar door seam strip according to claim 1, characterized in that: The buckle (201) is fixedly connected or rotationally connected to the panel (2).

6. The lower corner insert structure for B-pillar door seam strip according to claim 1, characterized in that: The corner body (1) and the panel (2) are both made of EPDM rubber.

7. The lower corner insert structure for B-pillar door seam strip according to claim 1, characterized in that: The surface of the corner body (1) is covered with a sealing strip, and the sealing strip is used to seal the gap between the decorative panel (3) and the B-pillar of the car.

8. The lower corner insert structure for a B-pillar door seam according to any one of claims 1 to 7, characterized in that: The interior of the spiral support (2012) is a spiral hollow structure.

9. A buffering method, characterized in that: The following steps are involved: After the spiral support (2012) is partially immersed in the connecting hole (301), the impact on the buckle (201) is reduced.

10. An automobile, characterized in that: The lower corner insert structure applicable to the B-pillar door seam strip according to any one of claims 1 to 8 is installed.

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