A commercial vehicle front windshield glass auxiliary fixing device and automobile

Abstract

The utility model discloses a kind of commercial vehicle front windscreen glass auxiliary fixing device and car, including glass clamping strip and glass auxiliary fixing strip, the glass clamping strip includes the clamping groove for clamping front windscreen glass upper edge and the first buckle for anchoring glass auxiliary fixing strip, the inner side of the glass auxiliary fixing strip is connected with first buckle, the inner side upper portion of the glass auxiliary fixing strip is equipped with double-sided adhesive, glass clamping strip and glass auxiliary fixing strip inside are each equipped with framework. The device is simple in structure, low in cost, by setting glass clamping strip and glass auxiliary fixing strip, glass auxiliary fixing, glue thickness control and rain leakage prevention multifunction can be realized simultaneously. Different specifications of glass can be directly applied, without modification to cab body and the like, especially suitable for heavy truck front windscreen glass with heavy weight, coating glue short time has cab rollover action and whole vehicle jolt road test demand, can meet the fast rhythm production demand of commercial vehicle.

Description

Technical Field

[0001] This utility model relates to the field of automotive technology, specifically to an auxiliary fixing device for the windshield of a commercial vehicle and the vehicle itself. Background Technology

[0002] Commercial vehicle windshields are typically bonded and sealed to the corresponding mating surfaces of the cab body using polyurethane adhesive. Unlike passenger vehicles, commercial vehicle windshields are heavy, some weighing over 40kg, and are nearly perpendicular to the ground after installation. The production line involves large-angle (nearly 60°) tilting movements of the cab, which places high demands on the adhesive performance of the windshield bonding agent.

[0003] To reduce manufacturing costs, the industry is increasingly using single-component polyurethane adhesives for glass bonding. Single-component polyurethane adhesives cure by moisture and are greatly affected by ambient temperature and humidity, resulting in a relatively slow strength development rate; the tensile shear strength after 2 hours is only around 0.05 MPa. Currently, OEMs are pursuing extremely fast production cycles, with some OEMs completing the entire vehicle rollout process in less than 2 hours from windshield bonding to vehicle testing. At low temperatures or humidity levels, the adhesive strength is insufficient to support the demands of road tests such as emergency braking, bumps, and inclines / declines, requiring additional auxiliary fixation for the windshield.

[0004] The dimensions of the cab's stamping and welding process exhibit some variation. For wide-body cabs, the windshield span is large, resulting in uneven gaps between the windshield and the cab's mating surfaces. The central area often shows larger gaps, sometimes exceeding 5mm. The upper edge of the central area of ​​the windshield is one of the potential high-frequency leakage points. Therefore, it is necessary to optimize the design of the protective strip to assist in fixing the glass while reducing the risk of leakage in fast-paced production.

[0005] There are many design ideas for glass protection strips, but among existing technologies, there is no patented technology that simultaneously integrates multiple functions such as controlling adhesive thickness, assisting in glass fixation, and preventing leaks, without requiring special modifications and possessing high versatility. Most existing technologies target the large-angle windshields of passenger vehicles, focusing more on decoration and sealing, which is fundamentally different from the design concept and application scenarios of this patent.

[0006] Chinese patent application number 201920125179.1 discloses a windshield trim strip assembly. The trim strip is firmly connected to the main body, but the soft strip in contact with the windshield lacks an internal metal frame, resulting in weak glass fixation. Furthermore, it does not control the gap between the glass and the main body. Other similar trim strip structures disclosed in patent applications 201910818638.9, 202022698809.X, and 201711226424.X (including a windshield trim strip and a vehicle), and 201711226424.X, are indirectly fixed to the side panel sheet metal via clips. However, all three share the limitation of having a soft windshield sealing strip, offering only wind and water protection with weak windshield fixation, making them suitable for passenger vehicles with steeply angled windshields.

[0007] In summary, to address the contradiction between the high difficulty of bonding windshield glass in commercial vehicles and the need for low-cost adhesives for glass bonding, it is necessary to design a low-cost auxiliary fixing device that also meets the functional requirements of preventing rain leakage and controlling adhesive thickness, thereby satisfying the fast production cycle of commercial vehicles. Utility Model Content

[0008] The purpose of this utility model is to provide an auxiliary fixing device for the windshield of a commercial vehicle and the vehicle itself. The auxiliary fixing device has a clever and reasonable structure, which integrates the functions of glass auxiliary fixing, glue thickness control and rainproofing. It is highly applicable and cost-effective.

[0009] The technical solution adopted by this utility model to solve its technical problem is: a commercial vehicle windshield auxiliary fixing device, including a glass clip and a glass auxiliary fixing strip. The glass clip includes a groove for engaging the upper edge of the windshield and a first buckle for anchoring the glass auxiliary fixing strip. The inner side of the glass auxiliary fixing strip is connected to the first buckle. The upper part of the inner side of the glass auxiliary fixing strip is provided with double-sided adhesive. Both the glass clip and the glass auxiliary fixing strip have a skeleton inside.

[0010] Furthermore, one side of the glass retainer is provided with a gap gauge for controlling the gap between the windshield glass and the mating surface of the cab body.

[0011] Furthermore, the card slot is provided with a first card strip skeleton, which is a U-shaped steel strip.

[0012] Furthermore, the first buckle has a second clip skeleton inside, which is an arc-shaped steel strip.

[0013] Furthermore, the glass auxiliary fixing strip has an L-shaped fixing strip skeleton inside.

[0014] Furthermore, the diameter of the slot is 0.5mm to 1mm smaller than the thickness of the windshield glass.

[0015] Furthermore, the glass clip and glass auxiliary fixing strip are extruded and molded.

[0016] Furthermore, the width of the gap gauge is 4mm to 5mm.

[0017] Furthermore, a second buckle is provided on one side of the glass auxiliary fixing strip, and the second buckle is connected to the first buckle.

[0018] An automobile, the automobile including a commercial vehicle windshield auxiliary fixing device.

[0019] The beneficial effects of this utility model are:

[0020] 1. The auxiliary fixing device of this utility model has a simple structure and low cost. By setting glass clips and glass auxiliary fixing strips, it can simultaneously achieve multiple functions such as glass auxiliary fixing, glue thickness control, and rainproofing. It can be directly applied to glass of different specifications without modifying the cab body, etc. It is especially suitable for the windshields of heavy trucks that are heavy and require cab tilting and bumpy road tests within a short period of time after glue application, thus meeting the fast-paced production needs of commercial vehicles.

[0021] 2. Because metal frames are set inside the glass retaining strip and the glass auxiliary fixing strip respectively, the strength of the plastic retaining strip and fixing strip is enhanced by the metal frames, thereby improving the firmness of the windshield installation.

[0022] 3. By setting double-sided foam adhesive on the inside of the glass auxiliary fixing strip, the glass can be fixed and leak-proof. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the principle structure of the present invention in use.

[0024] Figure 2 This is the left view of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0026] In the picture:

[0027] 1. Cab glass frame sheet metal surface; 2. Front windshield glass; 3. Glass retaining strip; 31. First retaining strip frame; 32. Second retaining strip frame; 33. Gap gauge; 34. First buckle; 35. Slot; 4. Glass auxiliary fixing strip; 41. Fixing strip frame; 42. Foam double-sided adhesive; 43. Second buckle. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1 to 3 The image shows an auxiliary fixing device for a commercial vehicle windshield, comprising a glass retaining strip 3 and a glass auxiliary fixing strip 4. The glass retaining strip 3 includes a groove 35 for engaging the upper edge of the windshield and a first buckle 34 for anchoring the glass auxiliary fixing strip. The glass auxiliary fixing strip 4 has an L-shaped fixing strip skeleton 41 inside. A second buckle 43 is provided on one side of the glass auxiliary fixing strip 4, and the second buckle 43 cooperates with the first buckle 34. Double-sided adhesive is provided on the upper inner side of the glass auxiliary fixing strip 4 for auxiliary glass fixing and rainproofing. Both the glass retaining strip 3 and the glass auxiliary fixing strip 4 have skeletons inside. A gap gauge 33 is provided on one side of the glass retaining strip 3 for controlling the gap between the windshield and the mating surface of the driver's cab.

[0030] The slot 35 is internally provided with a first card strip skeleton 31, which is a U-shaped steel strip. Preferably, the U-shaped steel strip is a DC03 series steel strip or an SPCC series steel strip. The matrix polymer material is a PVC / ABS mixed resin with a mixing ratio of 3:7 to 5:5, and the narrowest part of the slot is 0.5mm to 1mm smaller than the windshield.

[0031] The first buckle 34 has a second clip skeleton 32 inside, which is an arc-shaped steel strip, preferably a DC03 series steel strip or an SPCC series steel strip. The matrix polymer material is a PVC / ABS mixed resin with a mixing ratio of 3:7 to 5:5.

[0032] The diameter of the slot 35 is 0.5mm to 1mm smaller than the diameter of the windshield, which enhances the firmness of the installation between the windshield and the slot.

[0033] The glass clip 3 and the glass auxiliary fixing strip 4 are formed by extrusion molding. The extrusion molding is a co-extrusion process in which the matrix material and the metal skeleton are passed through an extrusion die, and the temperature of the feeding, plasticizing and extrusion sections is 150℃~200℃.

[0034] The gap gauge 33 is integrally extruded with the glass strip, and the gap gauge width is 4mm to 5mm. The base polymer material of the gap gauge is a PVC / ABS mixed resin with a mixing ratio of 3:7 to 5:5.

[0035] The double-sided adhesive is a foam double-sided adhesive, with a central substrate of closed-cell rigid foam material and pressure-sensitive adhesive on both sides. The pressure-sensitive adhesive has good adhesion to plastics and painted surfaces. The total thickness of the double-sided adhesive is 1.5mm to 2.5mm, and the width is 15mm to 20mm. Preferably, it is 3M tape.

[0036] The installation method is as follows: before applying adhesive to the glass, use a rubber hammer to hammer the glass clip into the upper edge of the glass. After applying adhesive and pressing the glass, peel off the release paper that comes with the glass auxiliary fixing strip, and use a rubber hammer to hammer the glass auxiliary fixing strip into the joint of the glass clip. At the same time, hammer the double-sided adhesive of the foam evenly to increase wettability and adhesion.

[0037] Apply activator and primer to the windshield 2 according to process requirements. Use a rubber hammer to drive the glass retaining strip 3 into the windshield 2 along its edge. The windshield is 6mm thick, and the narrowest part of the retaining strip groove 35 is 5mm. After applying adhesive around the glass circumference, align the windshield 2 with the mating sheet metal surface 1 of the cab body. Tap around the glass circumference until the 4mm thick gap gauge 33 contacts the mating sheet metal surface 1 of the cab body. Remove the release paper from the glass auxiliary fixing strip. Use a rubber hammer to drive the glass auxiliary fixing strip into the glass retaining strip from left to right, while simultaneously hammering the double-sided adhesive 42 evenly. The entire vehicle is then subjected to a rollover test, a line test, and a rain test according to actual production requirements. Measurements show no slippage of the windshield, no change in adhesive thickness, and no water leakage in the cab.

[0038] An automobile, the automobile including a commercial vehicle windshield auxiliary fixing device.

[0039] The above description is merely an illustration of some principles of this utility model. This specification is not intended to limit this utility model to the specific structure and applicable scope shown. Therefore, all possible modifications and equivalents that may be used fall within the scope of the patent application of this utility model.

[0040] Apart from the technical features described in the specification, all other technical features are known to those skilled in the art.

Claims

1. An auxiliary fixing device for the windshield of a commercial vehicle, characterized in that, The glass includes a glass retaining strip (3) and a glass auxiliary fixing strip (4). The glass retaining strip (3) includes a groove (35) for engaging the upper edge of the windshield glass and a first buckle (34) for anchoring the glass auxiliary fixing strip. The inner side of the glass auxiliary fixing strip (4) is connected to the first buckle (34). The upper part of the inner side of the glass auxiliary fixing strip (4) is provided with double-sided adhesive. Both the glass retaining strip (3) and the glass auxiliary fixing strip (4) have a frame inside.

2. The auxiliary fixing device for the windshield of a commercial vehicle according to claim 1, characterized in that, The glass retainer (3) is provided with a gap gauge (33) on one side for controlling the gap between the windshield glass and the mating surface of the cab body.

3. The auxiliary fixing device for the windshield of a commercial vehicle according to claim 1 or 2, characterized in that, The card slot (35) is provided with a first card strip skeleton (31), which is a U-shaped steel strip.

4. A commercial vehicle windshield auxiliary fixing device according to claim 1 or 2, characterized in that, The first buckle (34) has a second buckle frame (32) inside, and the second buckle frame (32) is an arc-shaped steel strip.

5. The auxiliary fixing device for the windshield of a commercial vehicle according to claim 1, characterized in that, The glass auxiliary fixing strip (4) has an L-shaped fixing strip skeleton (41) inside.

6. The auxiliary fixing device for the windshield of a commercial vehicle according to claim 1, characterized in that, The diameter of the slot (35) is 0.5mm to 1mm smaller than the thickness of the windshield glass.

7. The auxiliary fixing device for the windshield of a commercial vehicle according to claim 1, characterized in that, The glass clip (3) and the glass auxiliary fixing strip (4) are extruded.

8. The auxiliary fixing device for the windshield of a commercial vehicle according to claim 2, characterized in that, The width of the gap gauge (33) is 4mm to 5mm.

9. The auxiliary fixing device for the windshield of a commercial vehicle according to claim 1, characterized in that, The glass auxiliary fixing strip (4) has a second buckle (43) on one side, and the second buckle (43) is connected to the first buckle (34).

10. A car characterized by, The vehicle includes the auxiliary fixing device for the windshield of a commercial vehicle as described in any one of claims 1 to 9.

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