Glass Run

Abstract

To provide a glass run which enables vibration energy of door glass to efficiently flow to be dissipated.MEANS FOR SOLVING THE PROBLEM: In a glass run 10, a bottom wall 20, a vehicle outer side wall 30, and a vehicle inner side wall 40 form a basic skeleton. The basic skeleton is attached to a door frame groove part 5 formed at a door frame 3 to guide upward or rearward movement of door glass 4. At the vehicle inner side of the vehicle outer side wall 30, a thick wall part 31 which protrudes to the vehicle inner side, slidably contacts with the door glass 4, and has higher hardness than that of a vehicle outer side wall body part 37 of the vehicle outer side wall 30 is formed.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a glass run that is attached to a door frame formed in a door of a vehicle such as an automobile. [Background technology]

[0002] Improving the quietness of automobiles and other vehicles increases passenger comfort and therefore has a strong appeal as a product improvement. Furthermore, electric vehicles, which are expected to rapidly increase in popularity in the future, no longer have engines as they are conventionally equipped. The absence of engine noise leaves road noise and wind noise as the main remaining noises. Therefore, there is a greater need than ever for technologies to reduce these noises.

[0003] Wind noise is the sound generated outside the vehicle cabin when the wind hits the vehicle while it is moving, and then passes through the body of the vehicle and reaches the interior. It is known that the door glass, which is closest to the ears of the passengers inside the vehicle, contributes most to this noise. Measures have been taken to reduce this noise, such as increasing the thickness of the door glass and installing acoustic glass, but the increased weight and cost are obstacles.

[0004] In addition to door glass, glass runs, which are the sealing material between the door glass and the door frame, can also reduce noise, particularly in the high frequency range of 1 kHz or higher, and studies are being conducted to increase this reduction effect.

[0005] 7, the glass run 110 is formed in a channel shape (C-shaped cross section) with a basic framework of a bottom wall 200, an exterior side wall 300, and an interior side wall 400. A cover lip 340 that abuts against the door glass 600 is formed at the tip of the exterior side wall 300, and an exterior seal lip 330 that protrudes toward the bottom wall 200 and comes into sliding contact with the door glass 600 is formed on the interior side of the vehicle, closer to the bottom wall 200 than the cover lip 340 of the exterior side wall 300.

[0006] Meanwhile, an interior first seal lip 410 that comes into sliding contact with the door glass 600 is formed at the tip of the interior side wall 400, and a sub-lip 420 that protrudes in the opposite direction from the interior first seal lip 410 is formed toward the exterior of the vehicle on the exterior side of the interior side wall 400, closer to the bottom wall 200 than the interior first seal lip 410, so that when the interior first seal lip 410 comes into sliding contact with the door glass 600, the interior side of the interior first seal lip 410 abuts against the sub-lip 420. Furthermore, a cover lip 430 is formed at the tip of the interior side wall 400, extending from the tip of the interior side wall 400 so as to sandwich the interior frame of the door frame 310 between the interior side wall 400 and the cover lip 430 (Patent Document 1).

[0007] As a noise reduction technology using a glass run, for example, the technology described in Patent Document 2 below is known. Patent Document 2 relates to the glass run transmission route indicated by arrow A in Fig. 7. Note that the same reference numerals are used to designate parts common to Patent Document 1.

[0008] As shown in FIG. 8, the glass run 110 of Patent Document 2 has an interior seal lip that includes an interior first seal lip 410 and an interior second seal lip 440 that is formed closer to the bottom wall 200 than the interior first seal lip 410, and the interior first seal lip 410 and the interior second seal lip are formed toward the bottom wall 200 and do not abut against each other when sliding against the door glass 600.

[0009] As a result, the glass run 110 has a plurality of interior first seal lips 410 and interior second seal lips 440 formed closer to the bottom wall 200 than the interior first seal lip, which increases the blocking effect of transmitted sound in the glass run transmission route and reduces noise. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Japanese Patent Application Publication No. 2018-149984 [Patent Document 2] Patent Publication No. 2021-24388 Summary of the Invention [Problem to be solved by the invention]

[0011] One technique for reducing noise caused by wind is to efficiently channel the vibration energy of the door glass to a part that abuts the door glass and dissipate it, known as impedance matching, but this has not yet been fully explored. [Means for solving the problem]

[0012] The present invention focuses on impedance matching and provides a glass run that efficiently dissipates the vibration energy of the door glass, thereby reducing noise caused by wind noise.

[0013] In order to solve the above problems, the present invention of claim 1 provides a glass run that has a basic framework of a bottom wall, an exterior side wall, and an interior side wall, is attached to a door frame, and guides the raising and lowering of a door glass, and the exterior side wall, on the interior side of the vehicle, which corresponds to the vertical frame portion of the door, is formed with a thick portion that protrudes toward the interior of the vehicle, is in sliding contact with the door glass, and has a hardness higher than that of the exterior side wall main body portion of the exterior side wall, The hardness of the thick portion is 100±5 in IRHD (International Rubber Hardness Scale), a convex rib is formed on the interior surface of the thick portion, and the thick portion and the rib are formed continuously in the longitudinal direction; a cover lip is formed at a tip of the exterior side wall in the direction of the door glass and facing away from the bottom wall, and the cover lip abuts against the exterior surface of the door glass; an interior side wall is formed with an interior seal lip that extends from the exterior side of the vehicle toward the exterior side and the bottom wall side, between the tip of the interior side wall or the tip of the interior side wall and the bottom wall, and whose exterior side surface is in sliding contact with the door glass; and when the door glass is in sliding contact with the thick portion and the interior seal lip, the reaction force that the door glass receives from the exterior side from the thick portion and the reaction force that the door glass receives from the interior seal lip from the interior side are greater on the interior side than on the exterior side.

[0014] In the present invention, a thick portion that protrudes toward the interior of the vehicle and makes sliding contact with the door glass is formed on the exterior side wall of the glass run, which increases the rigidity of the glass run compared to the exterior seal lip in the background art. This makes it possible to efficiently channel and dissipate the vibration energy of the door glass when it is in sliding contact with the door glass, thereby reducing wind noise.

[0015] Furthermore, since the thick portion is harder than the exterior side wall main body portion of the vehicle, the rigidity of the glass run can be further increased, which allows the vibration energy of the door glass to be more efficiently dissipated by the thick portion of the glass run, thereby reducing wind noise. In addition, a convex rib is formed on the inside surface of the thick portion, which prevents dust, dirt, foreign matter, etc. from getting caught in the thick portion when the door glass is raised or lowered, thereby preventing the generation of abnormal noise.

[0004] The interior side wall is also formed with an interior seal lip that extends from the exterior side of the vehicle toward the exterior and bottom wall, between the interior side wall tip or the interior side wall tip and the bottom wall, and whose exterior side surface is in sliding contact with the door glass. When the door glass moves up and down in sliding contact with the thick portion and the interior seal lip, the reaction force from the exterior side to the thick portion and the interior seal lip from the interior side is greater than that from the exterior side. This increases the pressing force of the door glass on the thick portion, and allows the door glass to be displaced to a position where the rigidity of the glass run is increased. As a result, the vibration energy of the door glass can be efficiently channeled and dissipated through the glass run, further reducing wind noise. In addition, a cover lip is formed at the tip of the exterior side wall of the vehicle toward the door glass and facing away from the bottom wall, and the cover lip abuts against the exterior side of the door glass, preventing rainwater and dust from entering the thick portion and preventing deterioration of the thick portion. It also improves the sealing performance with the door glass.

[0016] Here, "rigidity of the glass run" is expressed as the increase in reaction force from the glass run relative to the amount of displacement of the pressed portion when the glass run is pressed by the door glass. Therefore, "increased rigidity of the glass run" means that the slope (gradient) of the relationship between displacement and reaction force becomes larger.

[0017] In impedance matching between the door glass and the glass run, the impedance of the door glass is thought to be dominated by the mass of the door glass, while the impedance of the glass run is thought to be dominated by the rigidity of the glass run. In the high frequency range of 1 kHz or higher, where noise reduction by the glass run is expected, the impedance of the door glass is larger than the impedance of the glass run. Therefore, if the impedance of the glass run can be made closer to or equal to the impedance of the glass by increasing the rigidity of the glass run, the vibration energy of the door glass can be efficiently channeled and dissipated through impedance matching, which is thought to reduce noise caused by wind noise.

[0018] The present invention as set forth in claim 2 is a glass run having a basic framework of a bottom wall, an exterior side wall, and an interior side wall, attached to a door frame, and guiding the raising and lowering of a door glass, wherein the exterior side wall, which corresponds to the vertical frame portion of the door, has a thick portion formed on the interior side of the vehicle that protrudes toward the interior of the vehicle, is in sliding contact with the door glass, and has a hardness higher than that of the exterior side wall main body portion of the exterior side wall, The hardness of the thick portion is 100±5 in IRHD (International Rubber Hardness Scale), a convex rib is formed on the interior surface of the thick portion, and the thick portion and the rib are formed continuously in the longitudinal direction; an exterior side wall is formed with an exterior seal lip that extends from the interior side of the vehicle between a leading end of the exterior side wall or the leading end of the exterior side wall and the bottom wall toward the interior side and the bottom wall, with its interior side surface in sliding contact with the door glass, and the exterior seal lip does not abut the thick portion; and an interior side wall is formed with an interior seal lip that extends from the exterior side of the vehicle between a leading end of the interior side wall or the leading end of the interior side wall and the bottom wall toward the exterior side and the bottom wall, with its exterior side surface in sliding contact with the door glass, and when the door glass is in sliding contact with the thick portion and the interior seal lip, the reaction force that the door glass receives from the exterior side from the thick portion and the reaction force that the door glass receives from the interior seal lip from the interior side are greater on the interior side than on the exterior side.

[0019] In claim 2 of the present invention, The glass run has a thickened portion on the interior side of the exterior side wall of the door frame that protrudes toward the interior and makes sliding contact with the door glass. This increases the rigidity of the glass run compared to the exterior seal lip in the background art, allowing the vibration energy of the door glass to be efficiently channeled and dissipated when it comes into sliding contact with the door glass, thereby reducing wind noise. Furthermore, since the thick portion is harder than the exterior side wall main body portion of the vehicle, the rigidity of the glass run can be further increased, which allows the vibration energy of the door glass to be more efficiently dissipated by the thick portion of the glass run, thereby reducing wind noise. In addition, a convex rib is formed on the inside surface of the thick portion, which prevents dust, dirt, foreign matter, etc. from getting caught in the thick portion when the door glass is raised or lowered, thereby preventing the generation of abnormal noise. also, The interior side wall is provided with an interior seal lip extending from the vehicle exterior side between the interior side wall tip or the interior side wall tip and the bottom wall toward the vehicle exterior and bottom wall, and the exterior side surface of the vehicle is in sliding contact with the door glass, and when the door glass moves up and down in sliding contact with the thick portion and the interior seal lip, From the thick part Outside the vehicle and Received from the seal lip inside the vehicle Because the reaction force from the inside of the vehicle is greater than that from the outside, the pressure on the thicker part of the door glass increases, displacing the door glass to a position where the rigidity of the glass run is increased. As a result, the vibration energy of the door glass can be efficiently dissipated by the glass run, further reducing noise caused by wind. Furthermore, the exterior side wall is formed with an exterior seal lip that extends from the tip of the exterior side wall toward the interior side and bottom wall of the vehicle, with the interior side surface in sliding contact with the door glass. This improves the sealing performance with the door glass, prevents the intrusion of raindrops, dust, etc., and reduces noise along the glass run passage route (arrow A in Figure 7). Furthermore, because the exterior seal lip does not contact the thick portion, the vibration energy of the door glass can be efficiently dissipated at the thick portion when it slides against the door glass, thereby reducing wind noise.

[0025] Claim 3 In the present invention, in the invention of claim 1 or claim 2, the vehicle exterior side of the vehicle exterior side wall is a glass run that comes into surface contact with the door frame.

[0026] Claim 3 In the present invention, the exterior side of the vehicle exterior side wall is in surface contact with the door frame, and the exterior side wall is sandwiched between the door frame and the door glass, thereby increasing the rigidity of the vehicle exterior side wall. As a result, vibration energy transmitted to the thick portion is efficiently attenuated, and noise due to wind noise can be reduced. [Effects of the Invention]

[0027] The glass run has a thickened portion on the interior side of the exterior wall that protrudes toward the interior and makes sliding contact with the door glass. This increases the rigidity of the glass run compared to the seal lip in the background art, and efficiently dissipates the vibration energy of the door glass when it comes into sliding contact with the door glass, thereby reducing wind noise.

[0028] Furthermore, since the thick portion is harder than the exterior side wall main body portion of the vehicle, the rigidity of the glass run can be further increased, which allows the vibration energy of the door glass to be more efficiently dissipated by the thick portion of the glass run, thereby reducing wind noise. [Brief explanation of the drawings]

[0029] [Figure 1] FIG. 1 is a front view of an automobile door. [Figure 2] FIG. 2 is a front view showing a glass run used in the door frame of FIG. [Figure 3] 2 is a cross-sectional view of the glass run according to the first embodiment of the present invention, taken along line XX in FIG. 1. [Figure 4] 8 is a graph showing the position of the door glass and the strength of the reaction force from the glass run when the door glass is displaced, for the glass run of FIG. 3 and the conventional glass run of FIG. 7. [Figure 5] 8 is a graph showing a comparison of the relationship between frequency and acoustic sensitivity at the ear position of an automobile seat and at the center of the outer side of the door glass for the glass run of FIG. 3 and the conventional glass run of FIG. 7. [Figure 6] 1. FIG. 4 is a cross-sectional view of a glass run according to a second embodiment of the present invention, taken along line YY in FIG. [Figure 7] FIG. 2 is a cross-sectional view showing a conventional glass run mounting structure, taken along line XX in FIG. 1 (Patent Document 1). [Figure 8] FIG. 2 is a cross-sectional view showing a conventional glass run mounting structure, taken along line XX in FIG. 1 (Patent Document 2). DETAILED DESCRIPTION OF THE INVENTION

[0030] A first embodiment of the present invention will be described with reference to Figs. 1 to 5. Fig. 1 shows a front view of a left front door 1 of an automobile as seen from outside the vehicle. A door frame 3 is attached to the upper part of a door body 2 that constitutes this front door 1. A window opening is formed by this door frame 3 and the upper edge of the door body 2. A glass run 10 is attached to the inner peripheral edge of the window opening and inside the door body 2 to guide the raising and lowering movement of the door glass 4. The present invention is applicable not only to the left front door 1, but also to a right front door and left and right rear doors. It is also applicable to sliding doors whose door glass rises and falls.

[0031] 2 is a simplified front view of only the glass run 10 as seen from the vehicle exterior. The glass run 10 is composed of a first extrusion 11 corresponding to the horizontal frame portion of the door frame 3, a second extrusion 12 corresponding to the front vertical frame portion of the front door 1, and a third extrusion 13 corresponding to the rear vertical frame portion. The front end of the first extrusion 11 is connected to the upper end of the second extrusion 12 by a first molded portion 14. The rear end of the first extrusion 11 is connected to the upper end of the third extrusion 13 by a second molded portion 15.

[0032] Fig. 3 is a cross-sectional view corresponding to line XX in Fig. 1. The glass run 10 has a basic framework of a bottom wall 20, an exterior side wall 30, and an interior side wall 40, and is formed in a channel shape (with a substantially U-shaped cross section). The connecting portions of the bottom wall 20, the exterior side wall 30, and the interior side wall 40 are connected by grooves 21, 21 on the exterior and interior sides so as to be freely deployable. The interior side wall 40 is formed larger than the exterior side wall 30, and the shapes are asymmetrical, with the interior side being larger.

[0033] The bottom wall 20 is formed in a generally plate-like shape, and a plurality of bottom wall recesses 22 are formed continuously in parallel in the longitudinal direction on the inner surface (door glass 4 side) of the bottom wall 20. In addition, a bottom wall seal lip 23 is formed on the outer surface of the bottom wall 20, and the bottom wall seal lip 23 abuts against a channel-shaped (approximately U-shaped cross section) door frame groove 5 formed in the door frame 3, thereby sealing the gap between the bottom wall 20 and the door frame groove 5.

[0034] On the exterior side of the exterior side wall 30, a first exterior retaining lip 33 and a second exterior retaining lip 34 that engage with the door frame groove 5 are formed near the connection with the bottom wall 20 and toward the tip of the exterior side wall 30, and the first exterior retaining lip 33 and the second exterior retaining lip 34 hold the bent door frame groove 5.

[0035] A thick portion 31 is formed on the interior side of the exterior side wall 30. The thick portion 31 protrudes toward the interior of the vehicle and makes sliding contact with the door glass 4. The thick portion 31 has a hardness greater than that of the exterior side wall main body portion 37 of the exterior side wall 30. In FIG. 3 , the exterior side wall main body portion 37 of the exterior side wall 30 is also formed thick at the portion where the thick portion 31 is formed. However, the thickness of the exterior side wall main body portion 37 may be the same as in the prior art, and the thick portion 31 may be formed thick up to the position where the door glass 4 makes sliding contact with the exterior side wall 30. By making the door glass 4 slidingly contact the thick portion 31 formed on the exterior side wall 30 and making the hardness of the thick portion 31 greater than that of the exterior side wall main body portion 37 of the exterior side wall 30, the difference in rigidity between the door glass 4 and the exterior side wall 30 is reduced. This allows the vibration energy of the door glass 4 to be efficiently channeled (transmitted) to the thick portion 31 and dissipated by impedance matching. As a result, wind noise can be reduced.

[0036] A plurality of convex ribs 32 are formed continuously in parallel in the longitudinal direction on the interior surface of the thick portion 31. The ribs 32 prevent dust, dirt, foreign matter, etc. from getting caught in the thick portion 31 when the door glass 4 is raised or lowered, thereby preventing the generation of abnormal noise.

[0037] A cover lip 36 is formed on the outer-side end portion 39 of the outer-side wall 30, facing the door glass 4 and away from the bottom wall 20. The cover lip 36 abuts against the outer surface of the door glass 4, preventing rainwater and dust from entering the thick portion 31 and preventing deterioration of the thick portion 31. It also improves the sealing performance with the door glass 4.

[0038] A locking portion 35 is formed at the base of the cover lip 36 facing the outside of the vehicle, and fixes the end of the pillar garnish 6 and seals the gap between the pillar garnish 6 and the surface of the door glass 4.

[0039] The exterior side of the exterior side wall 30 is in surface contact with the door frame groove 5. Therefore, the exterior side wall 30 is sandwiched between the door glass 4 and the door frame 3, increasing the rigidity of the exterior side wall 30. As a result, the vibration energy of the door glass 4 is efficiently transmitted to the exterior side wall 30 by impedance matching, and can be dissipated by the high attenuation of the exterior side wall 30, i.e., the glass run 10.

[0040] An interior seal lip 41 is formed on the exterior side of the interior side wall 40, extending from between the interior side wall tip 47 and the bottom wall 20 toward the exterior side of the vehicle and toward the bottom wall 20, with the exterior side surface thereof in sliding contact with the door glass 4. The interior seal lip 41 is formed shorter and thicker than the conventional one (FIG. 7) so that the reaction forces from the exterior and interior sides that the door glass 4 receives when the door glass 4 slides against the thick portion 31 of the exterior side wall 30 and the interior seal lip 41 are greater on the interior side than on the exterior side, increasing the pressing force of the door glass 4 toward the thick portion 31.

[0041] Note that the greatest tradeoff with increasing the rigidity of the glass run 10 is the sliding ability of the glass as it moves up and down. In other words, if the reaction force from the interior seal lip 41 to the door glass 4 becomes too large, it will have an adverse effect on the movement of the door glass 4 up and down, i.e., on sliding ability. On the other hand, if the reaction force from the interior seal lip 41 to the door glass 4 becomes too small, sliding ability will not be an issue, but the pressing force on the thick portion 31 will decrease, and the rigidity of the thick portion 31 will decrease. Therefore, in this embodiment, the length and thickness of the interior seal lip 41 were adjusted taking sliding ability and rigidity into consideration. Sliding ability and rigidity will be described in detail later.

[0042] A sub-lip 42 is formed on the outer side of the interior side wall 40, closer to the bottom wall 20 than the interior seal lip 41, facing in the opposite direction to the interior seal lip 41. The tip of the sub-lip 42 abuts against the interior side surface of the interior seal lip 41, and supports the interior seal lip 41 in pressing the interior side of the door glass 4 toward the exterior.

[0043] A first interior retaining lip 43 and a second interior retaining lip 44 are formed on the interior side of the interior side wall 40 near the joint with the bottom wall 20 and toward the tip of the interior side wall 40. The first interior retaining lip 43 and the second interior retaining lip 44 are engaged with the curved portion of the door frame groove 5, which has a curved portion. An abutment lip 45 is formed between the first interior retaining lip 43 and the second interior retaining lip 44. The first interior retaining lip 43, the second interior retaining lip 44, and the abutment lip 45 hold the interior side wall 40 in the curved door frame groove 5.

[0044] A cover lip 46 is formed facing the interior of the vehicle at an interior side wall tip 47 of the interior side wall 40. The cover lip 46 abuts against the door frame groove 5 to prevent the intrusion of rainwater, dust, and noise and to improve the sealing performance with the door frame groove 5.

[0045] In this embodiment, the glass run 10, excluding the thick portion 31, is made of an olefin-based thermoplastic elastomer (TPO) with an IRHD (International Rubber Hardness) of 80±5, and the thick portion 31 is made of TPO with an IRHD of 100±5, and is produced by extrusion molding.

[0046] In the embodiment of the present invention, the glass run 10 may be made of a material such as rubber, thermoplastic elastomer, or soft synthetic resin. In the case of rubber, EPDM (ethylene propylene diene rubber) is preferable, and in the case of thermoplastic elastomer, olefin-based thermoplastic elastomer (TPO) or dynamically crosslinked thermoplastic elastomer (TPV) are preferable from the viewpoints of weather resistance, recyclability, cost, etc.

[0047] Fig. 4 is a graph showing measurements of the position of the door glass and the reaction force from the glass run when the door glass is displaced inside or outside the vehicle for the glass run of Fig. 3 and the conventional glass run of Fig. 7. For the glass run of Fig. 3, the reaction forces were measured for the thick portion 31 and the interior seal lip 41, and for Fig. 7, the reaction forces were measured for the exterior seal lip 330 and the interior first seal lip 410. In Fig. 4, the solid line a indicates the reaction force from the exterior side of the vehicle for the present invention (Fig. 3), and the dashed line b indicates the reaction force from the interior side of the vehicle for the present invention (Fig. 3). Furthermore, the dashed line c indicates the reaction force from the exterior side of the vehicle for the conventional technology (Fig. 7), and the dashed line d indicates the reaction force from the interior side of the vehicle for the conventional technology (Fig. 7).

[0048] In Figure 4, the rigidity can be verified from the inclination at the balance position, that is, the intersection (●) of the reaction forces on the outside and inside of the vehicle, and the sliding properties can be verified from the magnitude.

[0049] As is clear from Figure 4, the slope of the reaction force a on the outside of the vehicle is steeper than the reaction force c of the prior art, indicating a significant increase in rigidity. On the other hand, the magnitude of the reaction force at the balance position (●) on the outside and inside of the vehicle is only slightly increased compared to the prior art. Therefore, it can be seen that the present invention satisfies both the contradictory requirements of increased rigidity and good sliding performance.

[0050] Fig. 5 is a graph showing a comparison of the relationship between frequency and acoustic sensitivity at the ear position of an automobile seat and the center of the outside of the door glass for the glass run in Fig. 3 and the conventional glass run in Fig. 7. As is clear from Fig. 5, the level of acoustic sensitivity is reduced, particularly in the high frequency range of 3 kHz or higher, and the vibration of the door glass is significantly reduced, i.e., noise is reduced.

[0051] From the above, the present invention focuses on impedance matching with the door glass, and with regard to the glass run, by forming a thick section on the vehicle exterior side wall that is harder than the vehicle exterior side wall main body and making sliding contact with the door glass, it is possible to increase the rigidity of the glass run, and in particular, by making the reaction force against the door glass on the vehicle interior side greater than on the vehicle exterior side, it is possible to significantly reduce vibration of the door glass and reduce noise without affecting the sliding properties of the door glass.

[0052] Furthermore, the present invention does not require changing the material of the glass run, and does not affect other performances of the glass run (for example, attachment to the door frame, sealing performance between the glass run and the door glass to prevent intrusion of raindrops, dust, etc.).

[0053] Fig. 6 is a cross-sectional view of a glass run according to a second embodiment of the present invention, taken along line YY in Fig. 1. The second embodiment differs from the first embodiment in that the exterior side wall 30 is provided with an exterior seal lip 38 that extends from an exterior side wall tip 39 toward the interior and exterior of the vehicle and the bottom wall 20, and whose interior side surface slides against the door glass 4 but does not abut against the thick portion 31.

[0054] By forming an exterior seal lip 38 whose interior side is in sliding contact with the door glass 4, it is possible to improve the sealing performance with the door glass 4, prevent the intrusion of raindrops, dust, etc., and reduce noise along the glass run passage route (arrow A in Figure 7).

[0055] Furthermore, since the exterior seal lip 38 does not contact the thick portion 31, the vibration energy of the door glass 4 can be efficiently channeled and dissipated at the thick portion 31 when the exterior seal lip 38 is in sliding contact with the door glass 4, similar to the first embodiment. As a result, wind noise can be reduced.

[0056] In addition to the claims, the present invention also includes the following aspects.

[0057] In claim 4, an exterior seal lip is formed on the exterior side wall, the exterior seal lip extending from the interior side of the vehicle between a leading end of the exterior side wall or the leading end of the exterior side wall and the bottom wall toward the interior side of the vehicle and the bottom wall, the exterior seal lip having an interior side surface in sliding contact with the door glass; 4. The glass run according to claim 3, wherein the exterior seal lip does not abut on the thick portion.

[0058] In claim 5, The outer side of the vehicle exterior side wall is Door frame 5. The glass run according to claim 3 or 4, which is in surface contact with the glass run.

[0059] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the object of the present invention.

[0060] For example, in the above embodiment, the glass run having the structure shown in FIG. 3 is attached to the XX cross section and the glass run having the structure shown in FIG. 4 is attached to the YY cross section, but they may be attached in the reverse order, or one of the glass runs may be attached to both cross sections.

[0061] For example, the glass run of the second embodiment can be applied to the first extrusion molding part in FIG.

[0062] For example, in both of the above embodiments, the conventional technology shown in FIG. 7 has been described as an improved example, but the present invention may also be applied to the vehicle exterior side wall of the conventional technology shown in FIG. [Explanation of symbols]

[0063] 1. Front door 2 Door body 3 Door Frame 5 Door frame groove 10 Glass Run 20 Bottom Wall 30 Outside side wall 31 Thick part 32 Ribs 38 Outer seal lip 40 Inner side wall 41 Inner seal lip

Claims

1. A glass run having a basic framework including a bottom wall, an exterior side wall, and an interior side wall, attached to a door frame, and guiding the raising and lowering of a door glass, a thick portion is formed on an interior side of the vehicle exterior side wall corresponding to the vertical frame portion of the door, protruding toward the interior of the vehicle and in sliding contact with the door glass, the thick portion having a hardness higher than that of the vehicle exterior side wall main body portion of the vehicle exterior side wall, the hardness of the thick portion being 100±5 on the IRHD (International Rubber Hardness Scale); A convex rib is formed on the vehicle interior surface of the thick portion, the thick portion and the rib are formed continuously in the longitudinal direction, a cover lip is formed at a tip end portion of the vehicle exterior side wall in the direction of the door glass and facing away from the bottom wall, the cover lip abutting against the vehicle exterior surface of the door glass; an interior side wall is formed with an interior seal lip that extends from an exterior side of the vehicle between an interior side wall tip portion or the interior side wall tip portion and the bottom wall toward the exterior side of the vehicle and the bottom wall, and whose exterior side surface is in sliding contact with the door glass; When the door glass is in sliding contact with the thick portion and the interior seal lip, the reaction force that the door glass receives from the thick portion on the exterior side of the vehicle and the reaction force that the door glass receives from the interior seal lip on the interior side of the vehicle are greater than the reaction force that the door glass receives from the exterior side of the vehicle.

2. A glass run having a basic framework including a bottom wall, an exterior side wall, and an interior side wall, attached to a door frame, and guiding the raising and lowering of a door glass, a thick portion is formed on an interior side of the vehicle exterior side wall corresponding to the vertical frame portion of the door, protruding toward the interior of the vehicle and in sliding contact with the door glass, the thick portion having a hardness higher than that of the vehicle exterior side wall main body portion of the vehicle exterior side wall, the hardness of the thick portion being 100±5 on the IRHD (International Rubber Hardness Scale); A convex rib is formed on the vehicle interior surface of the thick portion, the thick portion and the rib are formed continuously in the longitudinal direction, an exterior seal lip is formed on the exterior side wall, the exterior seal lip extending from the interior side of the vehicle between a leading end of the exterior side wall or the leading end of the exterior side wall and the bottom wall toward the interior side of the vehicle and the bottom wall, the exterior seal lip having an interior side surface in sliding contact with the door glass; the outer seal lip does not abut on the thick portion, an interior side wall is formed with an interior seal lip that extends from an exterior side of the vehicle between an interior side wall tip portion or the interior side wall tip portion and the bottom wall toward the exterior side of the vehicle and the bottom wall, and whose exterior side surface is in sliding contact with the door glass; When the door glass is in sliding contact with the thick portion and the interior seal lip, the reaction force that the door glass receives from the thick portion on the exterior side of the vehicle and the reaction force that the door glass receives from the interior seal lip on the interior side of the vehicle are greater than the reaction force that the door glass receives from the exterior side of the vehicle.

3. 3. The glass run according to claim 1, wherein the outer surface of the outer side wall is in surface contact with the door frame.

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