A water leakage prevention structure for the upper corner of a split type frameless door clamping strip

Abstract

The utility model relates to the field of frameless door sealing, and specifically discloses a water leakage prevention structure for the upper corner of a split frameless door clamping strip, which comprises a clamping strip body, and a tight flange for plugging a triangular area cavity is arranged at the top end of the clamping strip body. The tight flange can abut against the sheet metal part at the top of the door, and the tight flange and the top of the clamping strip body are deformed, thereby plugging and blocking the triangular area cavity, achieving the sealing treatment of the triangular area cavity, and effectively reducing the air leakage and water leakage risk of the original triangular area cavity.

Description

Technical Field

[0001] This utility model relates to the field of frameless car door sealing technology, and in particular to a water-proof structure for the upper corner of the snap strip of a split frameless car door. Background Technology

[0002] Frameless door sealing strips come in two frameless structures: split frameless and integral frameless. Integral frameless sealing strips only have a sealing surface at the frame joint and the outer watertight corner, resulting in a slightly weaker sealing effect. Split frameless sealing strips, depending on the installation location, employ either B-Pillar or C-Pillar structures. Both B-Pillar and C-Pillar structures have a first sealing surface at the outer watertight corner, and a second sealing surface between the frame and the outer watertight corner, resulting in a superior sealing effect. Therefore, split frameless sealing structures have indeed gained wider application due to their performance advantages.

[0003] Currently, in the design of frameless split doors, the sealing strips (clamp strips) installed on the B and C pillars have their upper edge at the top corner flush with the upper edge of the door glass when it is closed in the Z direction. However, after installing the clamp strips, the situation changes. Figure 1 As shown, the top edge of the snap-fit ​​strip will be deformed by the pressure of the glass, resulting in a triangular cavity A between the top edge of the snap-fit ​​strip and the glass. This makes it easy for air and water to leak at the triangular cavity A, directly affecting the sealing performance of the sealing strip. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a leak-proof structure for the upper corner of a split frameless car door snap-fit ​​strip, which solves the problem that the top edge of the snap-fit ​​strip is deformed by the glass, resulting in a triangular cavity A between the top edge of the snap-fit ​​strip and the glass, which easily leads to air and water leakage.

[0005] To achieve the above objectives, the basic solution of this utility model is as follows: a leak-proof structure for the upper corner of a split frameless car door snap-fit ​​strip, comprising a snap-fit ​​strip body, wherein the top of the snap-fit ​​strip body is provided with a sealing flange that can seal the cavity in the triangular area.

[0006] The technical principle of this utility model is as follows: When the snap-fit ​​strip body is installed on the vehicle, the abutting flange can abut against the sheet metal part at the top of the door, thereby deforming the top of the abutting flange and the snap-fit ​​strip body, thus sealing the triangular cavity and achieving a sealing treatment of the triangular cavity. This can effectively reduce the risk of air and water leakage at the original triangular cavity and effectively improve the sealing performance at the top of the snap-fit ​​strip body.

[0007] Furthermore, the mounting height of the abutment flange in the Z direction is higher than the height of the upper edge of the door glass when the door glass is closed.

[0008] The above settings ensure that the clamping flange can fully cover the triangular cavity when it deforms, thus improving the sealing performance of the snap-fit ​​strip body.

[0009] Furthermore, the height L1 of the flange in the Z direction is 0.4-0.6mm.

[0010] By setting the height in the Z direction, the stress at the top of the clamping flange and the snap-fit ​​strip body can be moderate when the clamping flange is clamped and deformed.

[0011] Furthermore, the clamping flange is flared.

[0012] The above settings make it easier for the clamping flange to shift towards the triangular cavity under the guidance of the flaring direction when it is clamped and deformed, thus ensuring coverage of the triangular cavity.

[0013] Furthermore, the outward expansion width L2 of the clamping flange in the X direction is 0.15-0.25mm.

[0014] The above settings prevent excessive or insufficient stress at the top of the clamping flange and the snap-fit ​​strip body when sealing the triangular cavity of the clamping flange, thus avoiding fatigue damage to the clamping flange.

[0015] Furthermore, the edges of the flange are smoothly transitioned.

[0016] The above settings allow for more even force distribution at the end face of the clamping flange, reducing the risk of fatigue damage.

[0017] Furthermore, the clamping flange is located on the side of the snap-fit ​​strip body away from the B-pillar or C-pillar.

[0018] The above configuration facilitates the location of the retaining flange near the triangular cavity and the formation of the retaining flange on the top side of the snap-fit ​​strip body. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the snap-fit ​​strip after it has been installed in the background art.

[0020] Figure 2 This is a schematic diagram of the structure of the anti-leakage structure at the upper corner of the split frameless car door snap strip in the natural state and the vehicle installation state in the axial direction of this utility model embodiment.

[0021] Figure 3 for Figure 2 Enlarged view of point B in the middle.

[0022] Figure 4 for Figure 2 A schematic diagram of the structure of the center-clamping flange in its natural state and in the axle-side direction when it is mounted on a vehicle.

[0023] In the above attached figures: triangular cavity A, snap-fit ​​strip body 10, and clamping flange 20. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0025] This embodiment is basically as follows: Figure 2 , Figure 3 and Figure 4 As shown in the figure, this utility model embodiment proposes a water-proof structure for the upper corner of the snap-fit ​​strip of a split frameless car door, including a snap-fit ​​strip body 10. The top of the snap-fit ​​strip body 10 is provided with a sealing flange 20 that can seal the hole in the triangular area. At the same time, the sealing flange 20 is located on the side of the snap-fit ​​strip body 10 away from the B-pillar or C-pillar.

[0026] like Figure 2 , Figure 3 and Figure 4 As shown, the mounting height of the abutting flange 20 in the "Z" direction is higher than the height of the upper edge of the door glass when the door glass is closed, and the height L1 of the abutting flange 20 in the "Z" direction is 0.5mm.

[0027] like Figure 4 As shown, the longitudinal section profile of the clamping flange 20 is flared, the edge of the clamping flange 20 is smoothly transitioned, and the outward expansion width L2 of the clamping flange 20 in the "X" direction is 0.2mm.

[0028] In this embodiment, a water-proof structure for the upper corner joint of a split frameless car door snap-fit ​​strip is used during vehicle installation, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the abutment flange 20 can abut against the raised window glass, thereby deforming the top of the abutment flange 20 and the snap-fit ​​strip body 10, thus... Figure 1 The triangular cavity A shown in the figure is sealed to achieve a sealing treatment of the triangular cavity A, which can effectively reduce the risk of air leakage and water leakage at the original triangular cavity A, and can effectively improve the sealing performance at the top of the snap-fit ​​strip body 10.

[0029] Meanwhile, during vehicle assembly, since the height L1 of the clamping flange 20 in the Z direction is 0.5mm and its outward expansion width L2 in the X direction is 0.2mm, when the clamping flange 20 is clamped and deformed, the clamping flange 20 can ensure that it just seals the triangular cavity A, which can avoid excessive or insufficient stress at the top of the clamping flange 20 and the snap-fit ​​strip body 10, and reduce the impact on the service life of the top of the clamping flange 20 and the snap-fit ​​strip body 10.

[0030] Meanwhile, because the edge of the clamping flange 20 is smoothly transitioned and flared, the end face of the clamping flange 20 can be clamped more evenly and is less prone to fatigue damage.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model 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 this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A leak-proof structure for the upper corner joint of a split frameless car door snap-fit ​​strip, comprising a snap-fit ​​strip body, characterized in that, The top of the snap-fit ​​strip body is provided with a tightening flange that can seal the cavity in the triangular area.

2. The water-proof structure for the upper corner joint of a split frameless car door snap-fit ​​strip as described in claim 1, characterized in that, The mounting height of the abutment flange in the Z direction is higher than the height of the upper edge of the door glass when the door glass is closed.

3. The water-proof structure for the upper corner joint of a split frameless car door snap-fit ​​strip as described in claim 2, characterized in that, The height L1 of the clamping flange in the Z direction is 0.4-0.6 mm.

4. The water-proof structure for the upper corner joint of a split frameless car door snap-fit ​​strip as described in claim 3, characterized in that, The clamping flange is flared.

5. A water-proof structure for the upper corner joint of a split frameless car door snap-fit ​​strip as described in claim 4, characterized in that, The outward expansion width L2 of the abutting flange in the X direction is 0.15-0.25mm.

6. A water-proof structure for the upper corner joint of a split frameless car door snap-fit ​​strip as described in claim 5, characterized in that, The edges of the abutting flange are smoothly transitioned.

7. A water-proof structure for the upper corner joint of a split frameless car door snap-fit ​​strip as described in claim 6, characterized in that, The clamping flange is located on the side of the snap-fit ​​strip body away from the B-pillar or C-pillar.

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