Seal bar corner wrap structure

Abstract

The application belongs to the technical field of automobile sealing strips, and specifically discloses a frameless sealing strip corner joint covering structure which comprises a corner joint and a sealing strip. The corner joint is provided with an accommodating groove for the end of the sealing strip to be inserted and in interference fit. After the sealing strip is inserted into the accommodating groove, the end of the corner joint and the surface of the sealing strip are smoothly connected. The scheme of the application can solve the problem of high cost of integrated processing of the corner joint and the sealing strip.

Description

Technical Field

[0001] This invention belongs to the field of automotive sealing strip technology, specifically relating to a frameless sealing strip corner covering structure. Background Technology

[0002] Door sealing strip assemblies are used to fill various gaps between body components, playing a role in shock absorption, waterproofing, dustproofing, and sound insulation, thereby improving the comfort of the driving and riding experience. Door sealing strip assemblies are installed around the perimeter of the door and window frames. A door sealing strip assembly generally includes multiple sealing strips. At the corners of the door and window frames, different sealing strips need to be connected by corner joints to form a closed loop. The corner joints need to serve the functions of sealing, concealing imperfections, and beautifying the appearance.

[0003] In the existing technology, door sealing strip assemblies are usually processed as a single piece, that is, the door sealing strip is directly processed into a closed ring shape. However, the single-piece processing has the problem of long processing flow and complicated processing technology due to the complex structure, resulting in high processing cost. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a frameless sealing strip corner covering structure to solve the problem of long processing flow and complex processing technology caused by the complex structure of integrated processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The frameless sealing strip corner covering structure includes a corner and a sealing strip. The corner has a receiving groove for the end of the sealing strip to be inserted and interference-fitted. After the sealing strip is inserted into the receiving groove, the end of the corner and the surface of the sealing strip transition smoothly.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] In this design, the corner joint and sealing strip are manufactured separately and then assembled after processing. During assembly, the end of the sealing strip is inserted into the receiving groove on the corner joint to complete the connection between the corner joint and the sealing strip. At the same time, the interference fit between the sealing strip and the receiving groove ensures a tight connection between the sealing strip and the corner joint. In addition, by controlling the depth of the sealing strip inserted into the receiving groove, the connection stability between the sealing strip and the corner joint can be guaranteed.

[0009] When the end of the sealing strip is inserted into the receiving groove, a step is formed between the end face of the corner joint and the surface of the sealing strip. When the corner joint and sealing strip are compressed, if the end face of the corner joint is compressed, the corner joint will move relative to the sealing strip, which may cause a gap to form at the connection between the corner joint and the sealing strip, resulting in insufficient sealing. Therefore, in this solution, the corner joint and the surface of the sealing strip are smoothly transitioned to avoid compression of the corner joint, and the fit between the corner joint and the sealing strip is better and more aesthetically pleasing.

[0010] Furthermore, the wall thickness of the end of the receiving groove into which the sealing strip is inserted is less than 3mm.

[0011] Beneficial effect: By reducing the wall thickness at this end of the receiving groove, it is easier to achieve a smooth transition between this end of the receiving groove and the surface of the sealing strip.

[0012] Furthermore, an opening is provided on the receiving groove along the length of the sealing strip, and limiting parts for limiting the sealing strip are provided on both sides of the free end of the receiving groove located at the opening; a buckle for connecting with the automotive sheet metal is installed on one end of the sealing strip inserted into the receiving groove, and the opening allows the buckle to extend out.

[0013] Beneficial effects: The sealing strip is connected to the door sheet metal via clips, and the position of the clips determines the depth to which the sealing strip is inserted into the receiving groove. The limiting part not only prevents the sealing strip from detaching from the receiving groove, but also limits the clips.

[0014] Furthermore, a snap-fit ​​strip is fixed to the inner wall of the receiving groove, and a snap-fit ​​groove for the snap-fit ​​strip to be embedded is opened on the sealing strip.

[0015] Beneficial effects: After the sealing strip is inserted into the receiving groove, the snap-fit ​​strip snaps into the snap-fit ​​groove, thereby improving the connection strength between the sealing strip and the corner through snap-fit. At the same time, the snap-fit ​​strip improves the sealing effect between the sealing strip and the corner.

[0016] Furthermore, the cross-section of the snap-fit ​​strip is a right-angled triangle or a right-angled trapezoid, and the wedge surface of the snap-fit ​​strip is set on the side of the snap-fit ​​strip facing away from the inner wall of the receiving groove. The side wall of the snap-fit ​​groove and the side wedge surface of the snap-fit ​​strip are engaged.

[0017] Beneficial effects: When the sealing strip is inserted into the receiving groove, it needs to pass through the snap-fit ​​strip. The wedge-shaped design provides a guiding effect, facilitating the insertion of the sealing strip into the receiving groove. After insertion, the right-angled edge of the snap-fit ​​strip effectively holds the sealing strip in place, improving the connection strength between the sealing strip and the corner joint. Furthermore, even if water enters the gap between the sealing strip and the corner joint, the snap-fit ​​strip prevents it from penetrating deeper. Simultaneously, when the corner joint is compressed, the snap-fit ​​strip presses against the snap-fit ​​groove, and the wedge-shaped surfaces of both provide mutual compression, guiding the water out of the groove.

[0018] Furthermore, a drainage groove is connected to the bottom of the snap-fit ​​groove, and the drainage groove is connected to the outside of the sealing strip.

[0019] Beneficial effect: With the drainage channel, if water enters the snap-fit ​​groove, it can be discharged to the outside through the drainage channel, preventing water from accumulating in the snap-fit ​​groove.

[0020] Furthermore, the outer side of the sealing strip is provided with a thickened part, the end of which protrudes from the surface of the sealing strip and is used to abut against the end face of the receiving groove.

[0021] Beneficial effects: The thickened section makes it easier to achieve a smooth transition between the corner end and the surface of the sealing strip, reduces the requirement for the wall thickness of the receiving groove, makes processing easier, and avoids the problem of easy damage or movement relative to the sealing strip if the wall thickness of the receiving groove is too small.

[0022] Furthermore, the end face of the thickened part and the end face of the receiving groove are wedge-shaped.

[0023] Beneficial effects: When the corner is compressed, the wedge-shaped surfaces of the corner and the thickened part press against each other, improving the fit between the corner and the sealing strip, thereby improving the sealing effect.

[0024] Furthermore, the wedge surface of the thickened portion is configured such that the end of the thickened portion facing away from the sealing strip is inclined toward the end away from the receiving groove.

[0025] Beneficial effect: The wedge-shaped surface also provides some guidance for water, preventing it from penetrating deeper along the wedge-shaped surface of the sealing strip. Attached Figure Description

[0026] Figure 1 This is a front view of an embodiment of the present invention.

[0027] Figure 2 This is a rear view of an embodiment of the present invention.

[0028] Figure 3 This is a cross-sectional view of an embodiment of the present invention.

[0029] Figure 4 for Figure 3 Enlarged view of section A.

[0030] Figure 5 This is a cross-sectional view of another configuration according to an embodiment of the present invention.

[0031] Figure 6 for Figure 5 Enlarged view of section B.

[0032] Figure 7 This is a cross-sectional view of another configuration according to an embodiment of the present invention.

[0033] In the diagram: 1. Corner joint; 2. Sealing strip; 3. Receiving groove; 4. Buckle; 5. Limiting part; 6. Snap-fit ​​strip; 7. Drainage groove; 8. Thickened part. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings, and specific embodiments are given.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the frameless sealing strip corner covering structure includes a corner 1 and a sealing strip 2. A receiving groove 3 is provided on the corner 1 for the end of the sealing strip 2 to be inserted and interference fit. After the sealing strip 2 is inserted into the receiving groove 3, the end of the corner 1 and the surface of the sealing strip 2 transition smoothly. The wall thickness of the end of the receiving groove 3 for the sealing strip 2 to be inserted is less than 3mm.

[0036] During assembly, the sealing strip 2 is inserted into the receiving groove 3. Both the corner joint 1 and the sealing strip 2 are made of deformable rubber. Therefore, when inserting the sealing strip 2, the sealing strip 2 can be inserted into the receiving groove 3 by squeezing the sealing strip 2 or pulling the corner joint 1 to make the entrance of the receiving groove 3 larger. After the sealing strip 2 is inserted into the receiving groove 3, the sealing strip 2 and the corner joint 1 are reset to form an interference fit, so that the corner joint 1 can fit more tightly against the surface of the sealing strip 2, thereby improving the sealing effect.

[0037] By smoothly transitioning the end of the corner 1 and the surface of the sealing strip 2, the corner 1 end is not squeezed, and the fit between the corner 1 and the sealing strip 2 is better and more aesthetically pleasing. By limiting the wall thickness of the end of the receiving groove 3, the end of the receiving groove 3 and the surface of the sealing strip 2 can more easily achieve the requirement of smooth transition.

[0038] In another embodiment of the invention, combined with Figure 2 As shown, the receiving groove 3 has an opening along the length of the sealing strip 2. The receiving groove 3 has a limiting part 5 on both sides of the free end of the opening for limiting the sealing strip 2. The end of the sealing strip 2 inserted into the receiving groove 3 is equipped with a buckle 4 for connecting with the automotive sheet metal, and the opening allows the buckle 4 to extend out.

[0039] During assembly, the sealing strip 2 is first inserted into the receiving groove 3, and then the corner bracket 1 and the sealing strip 2 are assembled onto the door sheet metal. When assembled onto the door sheet metal, the limiting part 5 can restrict the sealing strip 2 to a certain extent, preventing the sealing strip 2 from falling out of the receiving groove 3. The sealing strip 2 is connected to the door sheet metal by the buckle 4, and the position of the buckle 4 is used to position the depth of the sealing strip 2 inserted into the receiving groove 3.

[0040] In another embodiment of the invention, combined with Figure 5 As shown, a snap-fit ​​strip 6 is fixed to the inner wall of the receiving groove 3, and a snap-fit ​​groove for the snap-fit ​​strip 6 is provided on the sealing strip 2. After the sealing strip 2 is inserted into the receiving groove 3, the snap-fit ​​strip 6 snaps into the snap-fit ​​groove, thereby improving the connection strength between the sealing strip 2 and the corner 1 through snap-fit. The specific configuration of the snap-fit ​​strip 6 is as follows: Figure 6As shown, the cross-section of the snap-fit ​​strip 6 is a right-angled triangle or a right-angled trapezoid. In this embodiment, the cross-section of the snap-fit ​​strip 6 is a right-angled trapezoid, and the cross-section of the snap-fit ​​groove is the same as the cross-section of the snap-fit ​​strip 6. The wedge surface of the snap-fit ​​strip 6 is set on the side of the snap-fit ​​strip 6 facing away from the inner wall of the receiving groove 3, that is, with Figure 5 Taking the direction shown as an example, the sealing strip 2 is located below the corner 1. The upper and left sides of the receiving groove 3 are both inner walls of the receiving groove 3. The wedge surface of the snap-fit ​​strip 6 is set on the lower side of the snap-fit ​​strip 6 and faces to the right. The side wall of the snap-fit ​​groove and the side wedge surface of the snap-fit ​​strip 6 cooperate. After the sealing strip 2 is inserted into the receiving groove 3, the right-angled edge of the snap-fit ​​strip 6 can better hold the sealing strip 2, improving the connection strength between the sealing strip 2 and the corner 1. The bottom of the snap-fit ​​groove is connected to a drainage groove 7, which is connected to the outside of the sealing strip 2. With the setting of the drainage groove 7, if water enters the snap-fit ​​groove, it can be discharged to the outside through the drainage groove 7, preventing water from accumulating in the snap-fit ​​groove.

[0041] In another embodiment of the invention, combined with Figure 7 As shown, the outer side of the sealing strip 2 is provided with a thickened portion 8. The end of the thickened portion 8 protrudes from the surface of the sealing strip 2 and is used to abut against the end face of the receiving groove 3. The thickened portion 8 facilitates a smooth transition between the end of the corner 1 and the surface of the sealing strip 2, reduces the requirements for the wall thickness of the receiving groove 3, makes processing easier, and avoids the problem of the receiving groove 3 being easily damaged or moving relative to the sealing strip 2 if the wall thickness is too small. The end face of the thickened portion 8 and the end face of the receiving groove 3 are wedge-shaped. Specifically, the wedge-shaped surface of the thickened portion 8 is configured such that the end of the thickened portion 8 facing away from the sealing strip 2 is inclined towards the end away from the receiving groove 3, so as to... Figure 7 Taking the direction shown as an example, the upper end of the thickened part 8 and the end face of the receiving groove 3 are matched. The upper end of the thickened part 8 is inclined to the left and the right. When the corner 1 is squeezed, the corner 1 and the wedge surface of the thickened part 8 squeeze each other, which improves the fit between the corner 1 and the sealing strip 2 and also provides a certain guiding effect for water, thus preventing water from entering deeper along the wedge surface of the thickened part 8.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A frameless sealing strip corner covering structure, characterized in that: The device includes a corner joint and a sealing strip. The corner joint has a receiving groove for the end of the sealing strip to be inserted and interference-fitted. After the sealing strip is inserted into the receiving groove, the end of the corner joint and the surface of the sealing strip transition smoothly. The outer side of the sealing strip has a thickened part. The end of the thickened part protrudes from the surface of the sealing strip and is used to abut against the end face of the receiving groove. The end face of the thickened part and the end face of the receiving groove are wedge-shaped and fit together. The end of the thickened part facing away from the sealing strip is inclined towards the end away from the receiving groove. A snap-fit ​​strip is fixed to the inner wall of the receiving groove. The sealing strip has a snap-fit ​​groove into which the snap-fit ​​strip is embedded. The cross-section of the snap-fit ​​strip is a right-angled triangle or a right-angled trapezoid. The wedge-shaped surface of the snap-fit ​​strip is located on the side of the snap-fit ​​strip facing away from the inner wall of the receiving groove. The side wall of the snap-fit ​​groove and the side wedge-shaped surface of the snap-fit ​​strip fit together. The bottom of the snap-fit ​​groove is connected to a drainage groove, which is connected to the outside of the sealing strip.

2. The frameless sealing strip corner covering structure according to claim 1, characterized in that: The wall thickness of the end of the receiving groove into which the sealing strip is inserted is less than 3mm.

3. The frameless sealing strip corner covering structure according to claim 1, characterized in that: An opening is provided on the receiving groove along the length of the sealing strip. Limiting parts for limiting the sealing strip are provided on both sides of the free end of the receiving groove located at the opening. A buckle for connecting with the automotive sheet metal is installed at one end of the sealing strip inserted into the receiving groove, and the opening allows the buckle to extend out.

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