Novel automobile groove-shaped sealing strip

Abstract

The invention discloses a new type of automobile felting groove sealing strip, which is placed on the inner side of the door frame of a car door. The novel automobile woolening groove sealing strip is formed by composite co-extrusion of EPDM compact glue and EPDM sponge rubber. The new type of automobile woolening groove sealing strip is The part close to the door frame is the EPDM sponge glue, and the other parts are the EPDM compact glue. The new type of automobile woolen groove sealing strip of the present invention adopts a composite structure combining EPDM dense glue and EPDM sponge glue. The thicker EPDM sponge glue can quickly absorb the impact energy of glass rising and play a good buffering role. The original position can be quickly restored, the durability is enhanced, and only the extrusion process can be completed. The process implementation is relatively simple and reliable, and the cost is low.

Description

technical field [0001] The invention relates to an automobile woolen groove sealing strip, in particular to a novel automobile woolen groove sealing strip with high efficiency buffering and easy recovery. Background technique [0002] Automobile trough sealing strip is a kind of automobile sealing strip located inside the door frame of the car door. It is used to maintain the smoothness of glass sliding, reduce glass sliding resistance, dustproof, waterproof, appearance decoration, reduce wind noise, and buffer the door glass at the same time. The impact force generated by moving to the door frame, its working principle is: when the car door glass rises to the top, due to the high speed, the impact force on the woolen groove sealing strip in the door frame will make a loud impact sound, especially the door glass If it is in the closed state for a long time, the top of the woolen groove will be under pressure for a long time, and the top buffer structure will fail. This is al...

AI Technical Summary

Problems solved by technology

The disadvantages are: due to poor compression permanent deformation of TPV material, it is difficult for the lip to return to its original position after being crushed by the glass, and even the material itself is adhered, causing the buffer lip to fail

[0005] 2. On the basis of the first structure above, double-sided sponge tape is added to the bottom of the trough sealing strip made by TPV, and the cushioning effect is improved to a certain extent. The disadvantage is that the double-sided sponge tape is thin, the cushioning effect is limited, and it is double-sided Glue will increase the post-process, increase labor and material costs

[0006] 3. The EPDM structure is adopted, that is, the bottom of the woolen groove sealing strip made of EPDM adopts a bubble structure, the rubber has good resilience, and the compression permanent deformation is small, and the cushioning effect is greatly improved compared with TPV. The disadvantage is that there is still adhesion of the material itself Possibly, the bubble structure requires higher process control precision, and the material area used is larger, and the cost will increase accordingly

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