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CN-115923464-B - Glass run

CN115923464BCN 115923464 BCN115923464 BCN 115923464BCN-115923464-B

Abstract

Provided is a glass run capable of effectively dissipating vibration energy flow of door glass. The glass run (10) uses a bottom wall (20), an outside side wall (30) and an inside side wall (40) as basic frameworks, the basic frameworks are installed on a door frame groove part (5) formed on a door frame (3) to guide the lifting of a door glass (4), a thick wall part (31) is formed on the inside of the outside side wall (30), the thick wall part (31) protrudes towards the inside of the vehicle to be in sliding contact with the door glass (4), and the rigidity is higher than that of a main body part (37) of the outside side wall (30).

Inventors

  • MASATOSHI NOJIRI
  • KATO TOMOHISA
  • Ruohara Masami

Assignees

  • 丰田合成株式会社
  • 丰田自动车株式会社

Dates

Publication Date
20260505
Application Date
20220929
Priority Date
20211001

Claims (4)

  1. 1. A glass run having a bottom wall, an outer side wall and an inner side wall as basic frames, the basic frames being attached to a door frame groove portion formed in a door frame to guide the lifting of a door glass, characterized in that, A thick portion that protrudes toward the vehicle interior side to be in sliding contact with the door glass and has a higher hardness than a vehicle exterior side wall main body portion of the vehicle exterior side wall is continuously formed in the longitudinal direction on the vehicle interior side of the vehicle exterior side wall, A convex rib is formed on the vehicle inner surface of the thick portion.
  2. 2. The glass run according to claim 1, wherein, An inside seal lip is formed on the inside side wall, and extends from the outside of the inside side wall front end portion or between the inside side wall front end portion and the bottom wall toward the outside of the vehicle and toward the bottom wall side, and a side surface of the outside of the vehicle is in sliding contact with the door glass, The reaction force from the vehicle exterior side and the vehicle interior side received by the door glass when the door glass is in sliding contact with the thick portion and the vehicle interior side seal lip is greater than the reaction force from the vehicle exterior side.
  3. 3. The glass run according to claim 1 or 2, wherein, An outside seal lip is formed on the outside side wall, and extends from the inside of the outside side wall front end portion or between the outside side wall front end portion and the bottom wall toward the inside of the vehicle and toward the bottom wall side, the side surface of the inside of the vehicle is in sliding contact with the door glass, The vehicle-outside seal lip is not in contact with the thick-wall portion.
  4. 4. The glass run according to claim 1 or 2, wherein, The vehicle outer side of the vehicle outer side wall is in surface contact with the door frame groove portion.

Description

Glass run Technical Field The present invention relates to a glass run (glass run) attached to a door frame formed in a door of a vehicle such as an automobile. Background The improvement of quietness of vehicles such as automobiles improves comfort of passengers, and thus commodity influence and attention are improved. Further, since electric vehicles expected to be rapidly popularized in the future do not have the engine currently mounted, road noise and wind noise among main noise remaining due to the disappearance of engine sound become apparent. Therefore, the necessity of the noise reduction technique described above is further increased as compared with the current technique. The wind break sound is a sound generated outside the vehicle cabin when wind during traveling contacts the vehicle and reaches the vehicle cabin through the vehicle body. As for the transmission path, it is known that the action of the door glass near the position of the ear of the occupant in the vehicle compartment is maximum, and countermeasures such as an increase in the thickness of the door glass and a setting of the acoustic glass are taken, but the increase in weight and the increase in cost are obstacles. However, in addition to the door glass, in a glass run, which is a seal between the door glass and the door frame, noise can be reduced particularly in a high frequency range of 1kHz or more, and an increase in the reduction effect has been studied. As shown in fig. 7, the glass run channel 110 is formed in a tunnel shape (a cross section is shaped like a figure コ) with the bottom wall 200, the vehicle-outside side wall 300, and the vehicle-inside side wall 400 as basic skeletons. A cover lip 340 that contacts the door glass 600 is formed at the front end of the vehicle outside side wall 300, and a vehicle outside seal lip 330 that protrudes toward the bottom wall 200 side and is in sliding contact with the door glass 600 is formed on the vehicle inside of the vehicle outside side wall 300 on the bottom wall 200 side than the cover lip 340. On the other hand, the vehicle interior side 1 st seal lip 410 that is in sliding contact with the door glass 600 is formed at the front end of the vehicle interior side wall 400, and the sub-lip 420 that protrudes in the opposite direction to the vehicle interior side 1 st seal lip 410 is formed toward the vehicle exterior side on the vehicle exterior side of the vehicle interior side wall 400 on the side of the bottom wall 200 than the vehicle interior side 1 st seal lip 410, and when the vehicle interior side 1 st seal lip 410 is in sliding contact with the door glass 600, the vehicle interior side of the vehicle interior side 1 st seal lip 410 is in contact with the sub-lip 420. A cover lip 430 is formed at the front end of the vehicle interior side wall 400, and the cover lip 430 extends so as to sandwich the vehicle interior frame of the door frame 310 between the vehicle interior side wall 400 and the front end of the vehicle interior side wall 400 (patent document 1). As a noise reduction technique by a glass run, for example, a technique described in patent document 2 below is known. Patent document 2 relates to a glass run through rail shown by arrow a in fig. 7. The common parts with patent document 1 are denoted by the same reference numerals. As shown in fig. 8, the glass run channel 110 of patent document 2 has an inside 1 st seal lip 410 and an inside 2 nd seal lip 440 formed closer to the bottom wall 200 than the inside 1 st seal lip 410, the inside 1 st seal lip 410 and the inside 2 nd seal lip being formed toward the bottom wall 200, and not abutting each other when in sliding contact with the door glass 600. As a result, the glass run channel 110 has the vehicle interior side 1 st seal lip 410 and the plurality of vehicle interior side 2 nd seal lips 440 formed closer to the bottom wall 200 than the vehicle interior side 1 st seal lip, so that the effect of shielding the glass run channel from the transmission sound of the rail is increased, and noise can be reduced. Patent document 1 Japanese patent application laid-open No. 2018-149984 Patent document 2 Japanese patent application laid-open No. 2021-24388 Disclosure of Invention However, with regard to the technique of reducing noise caused by wind noise, so-called impedance matching, which effectively dissipates vibration energy of the door glass to flow to a part in contact with the door glass, can be used to reduce vibration. The invention provides a glass run capable of effectively dissipating vibration energy flow of door glass and reducing noise caused by wind noise by focusing on impedance matching. In order to solve the above-described problems, the present invention according to claim 1 is a glass run in which a bottom wall, an outside side wall, and an inside side wall are used as basic frames, the basic frames are mounted in door frame groove portions formed in a door frame, and the lifting and lower