Glass Run

Abstract

To provide a glass run which efficiently enables vibration energy of a door glass to run through and dissipates the vibration energy.MEANS FOR SOLVING THE PROBLEM: A glass run 10 comprises as basic skeletons: a bottom wall 20; a vehicle outside side wall 30; and a vehicle inside side wall 40, and the basic skeletons are fitted to a door frame 3 for guiding lifting up / down of the door glass 4. The bottom wall 20 has: a door glass side lip 23 protruding from a door glass side surface of the bottom wall 20; a door glass side swollen part 24 which is interposed between the bottom wall 20 and the door glass side lip 23. At least one of the door glass side lip 23 and the door glass side swollen part 24 has hardness greater than that of the bottom wall 20.SELECTED DRAWING: Figure 6

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] Known noise reduction technology using a glass run is, for example, the technology described in Patent Document 1 below. As shown in Fig. 10, the glass run 100 is formed in a channel shape (with a U-shaped cross section) with a bottom wall 200, an exterior side wall 300, and an interior side wall 400 as its basic framework. 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 310 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, at the tip of interior side wall 400, an interior first seal lip 410 that comes into sliding contact with door glass 600 and an interior second seal lip 420 that is formed closer to bottom wall 200 than interior first seal lip 410 and comes into sliding contact with door glass 600 are both formed facing bottom wall 200, and interior first seal lip 410 and interior second seal lip 420 do not abut against each other when in sliding contact with door glass 600. By forming a plurality of interior seal lips, interior first seal lip 410 and interior second seal lip 420, the effect of blocking transmitted sound in the glass run transmission route indicated by arrow A is increased. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Patent Publication No. 2021-24388 Summary of the Invention [Problem to be solved by the invention]

[0008] 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]

[0009] 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.

[0010] In order to solve the above problems, the present invention of claim 1 is a glass run having a basic skeleton including a bottom wall, an exterior side wall, and an interior side wall, the basic skeleton being attached to a door frame, the opening of the basic skeleton receiving door glass and including a sealing member sealing the inside and outside of the door glass, the bottom wall being formed with a door glass side lip that protrudes from the side of the door glass of the bottom wall, and the hardness of the door glass side lip is higher than that of the bottom wall.

[0011] In the present invention, a door glass-side lip is formed on the bottom wall of the glass run, protruding from the side of the door glass. The hardness of the door glass-side lip is greater than that of the bottom wall, increasing the rigidity of the glass run including the bottom wall, and enabling the vibration energy of the door glass to be efficiently channeled and dissipated when it comes into contact with the door glass, thereby reducing wind noise.

[0012] 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.

[0013] 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 2 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.

[0014] The present invention described in claim 2 is a glass run having a basic skeleton including a bottom wall, an exterior side wall, and an interior side wall, the basic skeleton being attached to a door frame, a door glass being received in an opening in the basic skeleton, and a sealing member being provided to seal the door glass from the inside and outside of the vehicle, wherein the bottom wall is formed with a door glass-side lip that protrudes from the side surface of the bottom wall that faces the door glass, and a door glass-side bulge portion that is interposed between the bottom wall and the door glass-side lip, and at least one of the door glass-side lip and the door glass-side bulge portion has a higher hardness than the bottom wall.

[0015] In the present invention as recited in claim 2, the bottom wall of the glass run is formed with a door-glass-side lip that protrudes from the door-glass side of the bottom wall and a door-glass-side bulge that is interposed between the bottom wall and the door-glass-side lip, and at least one of the door-glass-side lip and the door-glass-side bulge is harder than the bottom wall, which increases the rigidity of the glass run including the bottom wall and further increases the contact area between the bottom wall and the door-glass-side lip, allowing the vibration energy of the door glass to be efficiently channeled and dissipated when it comes into contact with the door glass, thereby reducing wind noise.

[0016] The present invention of claim 3 is a glass run having a basic skeleton including a bottom wall, an exterior side wall, and an interior side wall, the basic skeleton being attached to a door frame, a door glass being received in an opening of the basic skeleton, and a sealing member being provided to seal the door glass from the inside and outside of the vehicle, wherein the bottom wall is formed with a door glass side lip that protrudes from the side surface of the bottom wall that is oriented toward the door glass, and a hard portion is formed in the portion of the bottom wall that abuts against the door glass side lip, the hard portion having a higher hardness than the portion of the bottom wall other than the portion that abuts against the door glass side lip.

[0017] In the present invention of claim 3, the bottom wall of the glass run is formed with a door glass-side lip that protrudes from the side of the bottom wall on the door glass, and the bottom wall is formed with a hard portion at the portion that abuts against the door glass-side lip that is harder than the rest of the bottom wall. This increases the rigidity of the glass run including the bottom wall, and enables the vibration energy of the door glass to be efficiently channeled and dissipated when it abuts against the door glass, thereby reducing wind noise.

[0018] The present invention of claim 4 is a glass run having a basic skeleton including a bottom wall, an exterior side wall, and an interior side wall, the basic skeleton being attached to a door frame, a door glass being received in an opening of the basic skeleton, and a sealing member being provided to seal the door glass between the inside and outside of the vehicle, the glass run being characterized in that the bottom wall is formed with a door frame side lip that protrudes from the door frame side surface of the bottom wall, and a door frame side bulge that bulges out from the door frame side surface of the bottom wall toward the door frame, and the hardness of the door frame side bulge is higher than that of the bottom wall.

[0019] In the present invention of claim 4, a door-frame-side lip is formed on the bottom wall of the glass run, protruding from the door-frame side surface of the bottom wall. This door-frame-side lip seals the gap between the door frame and the bottom wall. Furthermore, a door-frame-side bulge is formed on the bottom wall, bulging toward the door frame from the door-frame side surface. The hardness of the door-frame-side bulge is greater than that of the bottom wall. This increases the rigidity of the glass run, including the bottom wall. This allows the vibration energy of the door glass to be more efficiently channeled and dissipated when the glass run contacts the door glass, compared to the bottom wall in the background art. As a result, wind noise can be reduced while maintaining a good seal.

[0020] The present invention of claim 5 is the invention of claim 4, wherein the door frame side bulging portion is a glass run interposed between the bottom wall and the door frame side lip.

[0021] In the present invention of claim 5, the door frame-side bulge is interposed between the bottom wall and the door frame-side lip, which increases the rigidity of the glass run including the bottom wall and also increases the contact area between the bottom wall and the door glass-side lip, allowing the vibration energy of the door glass to be efficiently channeled and dissipated when it comes into contact with the door glass, thereby ensuring sealing performance and reducing wind noise. [Effects of the Invention]

[0022] The glass run has a basic framework consisting of a bottom wall, an exterior side wall, and an interior side wall, the basic framework is attached to a door frame groove formed in the door frame, the door glass is received in an opening in the basic framework, and the glass run is equipped with a sealing member that seals the door glass from the inside and outside of the vehicle, the bottom wall is formed with a door glass-side lip that protrudes from the side of the bottom wall that faces the door glass, and the door glass-side lip has a harder hardness than the bottom wall, which increases the rigidity of the glass run including the bottom wall and allows the vibration energy of the door glass to be efficiently channeled and dissipated when it comes into contact with the door glass, resulting in reduced wind noise. [Brief explanation of the drawings]

[0023] [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. FIG. 3 is a cross-sectional view of the glass run according to the first embodiment of the present invention taken along the line XX in FIG. [Figure 4] FIG. 2 is a cross-sectional view of a comparative glass run taken along the line XX in FIG. [Figure 5] FIG. 1 is a diagram illustrating noise measurement. [Figure 6] 2. FIG. 4 is a cross-sectional view of a glass run according to a second embodiment of the present invention taken along the line XX in FIG. [Figure 7] 2. FIG. 5 is a cross-sectional view of a glass run according to a third embodiment of the present invention taken along the line XX in FIG. [Figure 8] 2. FIG. 6 is a cross-sectional view of a glass run according to a fourth embodiment of the present invention taken along the line XX in FIG. [Figure 9] 2. FIG. 6 is a cross-sectional view of a glass run according to a fifth embodiment of the present invention taken along the line XX in FIG. [Figure 10] FIG. 1 is a cross-sectional view showing a conventional glass run mounting structure (Patent Document 1). DETAILED DESCRIPTION OF THE INVENTION

[0024] 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 the door frame 3 and the upper edge of the door body 2. A glass run 10 is attached inside the door frame 3 and 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.

[0025] 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.

[0026] 3 is a cross-sectional view taken along line XX in FIG. 2, showing the state when the door glass 4 is closed. FIG. 3 is a cross-sectional view showing the glass run 10 attached to a jig 60 for measuring the effect described below. The inner shape of the jig 60 is a trace of the shape of the door frame 3 to which the glass run 10 is attached to the vehicle. 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 expandable.

[0027] The bottom wall 20 is formed in a generally plate-like shape. A door-frame-side lip 22 is formed on the jig inner surface (door frame) side of the bottom wall 20, sealing the gap between the jig inner surface (door frame) and the bottom wall 20. A door-glass-side lip 23 that protrudes toward the door glass 4 is formed on the door glass side of the bottom wall 20. The door-glass-side lip 23 is formed to be convexly curved toward the door glass 4, and the door glass side of the door-glass-side lip 23 abuts against the door glass 4. In the first embodiment, the hardness of the door-glass-side lip 23 is greater than the hardness of the bottom wall 20.

[0028] An exterior seal lip 31 is formed on the interior side of the exterior side wall 30, protruding from the tip of the exterior side wall 30 toward the interior side of the vehicle and toward the bottom wall 20, and making sliding contact with the door glass 4. In addition, a first locking portion 32 and a second locking portion 33 are formed on the exterior side of the exterior side wall 30, and hold the inner surface of the bent jig 60 in a sandwiched manner.

[0029] An interior seal lip 41 is formed on the exterior side of the interior side wall 40, protruding from the tip of the interior side wall 40 toward the exterior side of the vehicle, toward the bottom wall 20, and making sliding contact with the door glass 4. Also, a first retaining lip 42, a second retaining lip 43, and an abutment rib 44 are formed on the interior side of the interior side wall 40, and they retain the inner surface of the bent jig 60. Therefore, the sealing members that seal the inside and outside of the door glass 4 are the inside seal lip 41 and the outside seal lip 31.

[0030] In this first embodiment, the glass run 10, excluding the door glass side lip 23, is made of an olefin-based thermoplastic elastomer (TPO) with an IRHD (International Rubber Hardness Scale) of 80±5, and the door glass side lip 23 is made of TPO with an IRHD of 100±5, and is manufactured by extrusion molding.

[0031] 3, when the door glass 4 is closed, the exterior seal lip 31 is in elastic contact with the exterior side of the door glass 4, the interior seal lip 41 is in elastic contact with the interior side of the door glass 4, and the door glass-side lip 23 is in elastic contact with the tip of the door glass 4. The tip of the door glass-side lip 23 is in contact with the bottom wall 20. However, the tip of the door glass-side lip 23 does not have to be in contact with the bottom wall 20.

[0032] FIG. 4 shows a comparative example, which has the same shape as that shown in FIG. 3, and the door glass side lip 23 is also made of the same material as the other portions of FIG.

[0033] FIG. 5 is a diagram illustrating noise measurement. A sound source 70 was placed at the position of a human ear in the vehicle cabin (the dashed circle in FIG. 5). Twenty acceleration pickups 71 (vibration level meters) that receive vibrations from the door glass 4 were attached to the exterior of the vehicle, respectively. The acceleration pickups 71 are the sensor parts of the vibration level meters, and output an electrical signal proportional to the vibration acceleration. As shown in FIG. 5, a glass run 10, which is the first extrusion molding part 11 in FIG. 2 and has the cross section shown in FIGS. 3 and 4, was attached to the horizontal frame part of the door glass 4 at the top of the vehicle, and noise measurement was carried out.

[0034] Since the frequency characteristics perceived by the human ear are geometric, octave analysis was used for the analysis. The sound pressure level of each band within the audible frequency range of noise is measured through a bandpass filter specified in the 1 / 3 octave standard. Please refer to JIS C 1513:2002 for the characteristics of bandpass filters.

[0035] As a result of noise measurement, in the first embodiment, a noise reduction effect was confirmed in the range of 2 kHz to 5 kHz, compared with the measurement result of the glass run 10 in FIG.

[0036] The above effect is believed to be the result of increasing the hardness of the door glass-side lip 23 of the glass run 10, thereby reducing the difference in rigidity between it and the door glass 4, and enabling impedance matching to efficiently channel (transmit) and dissipate the vibration energy of the door glass 4 to the door glass-side lip 23, i.e., the glass run 10. As a result, wind noise can be reduced.

[0037] Furthermore, the present invention does not require changing the material of the basic structure of the glass run 10, and does not affect other performance of the glass run 10 (for example, attachment to the door frame 3, sealing performance between the glass run 10 and the door glass 4 to prevent the intrusion of raindrops, dust, etc.).

[0038] FIG. 6 shows a second embodiment of the present invention, and is a cross-sectional view taken along the line XX in FIG. 2. Similarly to the first embodiment, FIG. 6 is a cross-sectional view of the glass run 10 attached to a jig 60 for measuring the effect. The second embodiment differs from the first embodiment in that, first, a door-glass-side bulge 24 is formed between the bottom wall 20 and the door-glass-side lip 23, and the door-glass-side bulge 24 has a higher hardness than the bottom wall 20, and second, the door-glass-side lip 23 has the same hardness as the bottom wall 20. Note that the other components, such as the vehicle-exterior side wall 30, are the same as those in FIG. 3. The hardness of the door-glass-side bulge 24 is the same as that of the door-glass-side lip 23 (FIG. 3) of the first embodiment.

[0039] The door glass-side bulge 24 is formed on the door glass side of the bottom wall 20, and does not abut against the door glass-side lip 23 when the glass run 10 is attached to the jig 60 (or the door frame 3 when mounted on the vehicle). Note that the door glass-side bulge 24 may abut against the base of the door glass-side lip 23 when the glass run 10 is attached to the jig 60 (or the door frame 3 when mounted on the vehicle).

[0040] Here, the hardness of the door glass-side bulge 24 and the door glass-side lip 23 needs to be higher than the hardness of the bottom wall 20. Therefore, in addition to the above, cases where the hardness of the door glass-side bulge 24 is the same as that of the bottom wall 20 and the hardness of the door glass-side lip 23 is higher than that of the bottom wall 20 are also included, as well as cases where the hardness of both the door glass-side bulge 24 and the door glass-side lip 23 is higher than that of the bottom wall 20.

[0041] When the door glass 4 is closed, as shown in Figure 6, the door glass side lip 23 of the glass run 10 elastically contacts the tip of the door glass 4, and the door glass side lip 23 abuts on the door glass side bulge 24 with its surface.

[0042] Noise measurements confirmed that the second embodiment had a noise reduction effect in the range of 2 kHz to 5 kHz compared to the measurement results for the glass run 10 in FIG. 4. A noise reduction effect of 0.3 dB was also confirmed at 2 kHz. Therefore, by interposing the door glass-side bulge 24, which is harder than the bottom wall 20, between the bottom wall 20 and the door glass-side lip 23, the contact area between the bottom wall 20 and the door glass-side lip 23 is increased, allowing the vibration energy of the door glass 4 to be efficiently channeled and dissipated when the bottom wall 20 contacts the door glass 4. As a result, wind noise can be reduced.

[0043] FIG. 7 shows a third embodiment of the present invention, and is a cross-sectional view taken along the line XX in FIG. 2. Similarly to the first embodiment, FIG. 7 is a cross-sectional view of the glass run 10 attached to a jig 60 for measuring the effect. The third embodiment differs from the first embodiment in that, first, the hardness of the glass-side lip 23 is the same as that of the bottom wall 20. Second, a hard portion 25 having a higher hardness than the rest of the bottom wall 20 is formed in the portion of the bottom wall 20 that abuts against the glass-side lip 23. In FIG. 7, the hard portion 25 penetrates the bottom wall 20 from the glass door 4 side to the jig 60 side (door frame side). However, the hard portion 25 may not penetrate the bottom wall 20 but may be formed on the glass door lip 23 side. Furthermore, the hard portion 25 may be formed separately on the glass door lip 23 side of the bottom wall 20 and on the jig 60 side (door frame side).

[0044] The noise measurement results confirmed that the third embodiment has a noise reduction effect in the range of 2 kHz to 5 kHz, compared to the measurement results of the glass run 10 in Fig. 4. Therefore, the vibration energy of the door glass 4 can be efficiently diverted and dissipated when it comes into contact with the door glass 4. As a result, noise caused by wind noise can be reduced.

[0045] FIG. 8 shows a fourth embodiment of the present invention, and is a cross-sectional view taken along the line XX in FIG. 2. Similarly to the first embodiment, FIG. 8 is a cross-sectional view of a glass run 10 attached to a jig 60 for measuring the effect. The fourth embodiment differs from the first embodiment in that, first, the hardness of the door glass-side lip 23 is the same as that of the bottom wall 20, and second, the bottom wall 20 is formed with a door frame-side bulge 26 that protrudes from the jig 60-side (door frame-side) surface of the bottom wall 20 toward the jig 60 (door frame side). Furthermore, the door frame-side bulge 26 abuts against the jig 60 (door frame 3 when mounted on a vehicle) when attached to the jig 60.

[0046] The noise measurement results confirmed that the fourth embodiment has a noise reduction effect in the range of 2 kHz to 5 kHz, compared to the measurement results of the glass run 10 in Fig. 4. Therefore, by forming the door frame-side bulge 26, the vibration energy of the door glass 4 can be efficiently channeled and dissipated. As a result, noise due to wind noise can be reduced.

[0047] Fig. 9 shows a fifth embodiment of the present invention, which is a cross-sectional view taken along line XX in Fig. 2. Similarly to the first embodiment, Fig. 8 shows a cross-sectional view of the glass run 10 attached to a jig 60 for measuring the effect. The fifth embodiment differs from the fourth embodiment in that a hard door frame-side bulge 26 is interposed between the bottom wall 20 and the door frame-side lip 22.

[0048] The door frame side bulge 26 is formed on the side surface of the jig 60 of the bottom wall 20, and in Fig. 9, the door frame side bulge 26 abuts the door frame side lip 22 with its face. When the glass run 10 is attached to the jig 60 (or the door frame 3 when mounted on a vehicle), the door frame side bulge 26 may abut the door frame side lip 22 with its face, or may only abut partially, or may not abut at all.

[0049] The noise measurement results confirmed that the fifth embodiment has a noise reduction effect in the range of 2 kHz to 5 kHz, compared to the measurement results of the glass run 10 in Fig. 4. Therefore, by interposing the door frame side bulge 26 between the bottom wall 20 and the door frame side lip 22, the vibration energy of the door glass 4 can be efficiently channeled and dissipated. As a result, noise due to wind noise can be reduced.

[0050] In the embodiment of the present invention, the glass run 10 can 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.

[0051] 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.

[0052] For example, in the above third to fifth embodiments, the hardness of the door glass side lip 23 is the same as that of the bottom wall 20, but as in the first embodiment, the hardness of the door glass side lip 23 may be higher than that of the bottom wall 20. [Explanation of symbols]

[0053] 1. Front door 2 Door body 3 Door Frame 10 Glass Run 20 Bottom Wall 22 Door frame side lip 23 Door glass side lip 24 Door glass side bulge 25 Hard part 26 Door frame side bulge 30 Outside side wall 31 Outer seal lip 40 Inner side wall 41 Inner seal lip

Claims

1. A glass run has a basic framework including a bottom wall, an exterior side wall, and an interior side wall, the basic framework is attached to a door frame, a door glass is received in an opening of the basic framework, and the glass run is provided with a sealing member that seals the interior and exterior of the door glass, The bottom wall is formed with a door glass side lip that protrudes from the door glass side of the bottom wall, The glass run is characterized in that the hardness of the lip on the door glass side is higher than that of the bottom wall.

2. A glass run has a basic framework including a bottom wall, an exterior side wall, and an interior side wall, the basic framework is attached to a door frame, a door glass is received in an opening of the basic framework, and the glass run is provided with a sealing member that seals the interior and exterior of the door glass, The bottom wall has a door glass side lip protruding from a door glass side of the bottom wall. a door glass side bulge portion is formed between the bottom wall and the door glass side lip, At least one of the door glass side lip and the door glass side bulge portion has a hardness higher than that of the bottom wall.

3. A glass run has a basic framework including a bottom wall, an exterior side wall, and an interior side wall, the basic framework is attached to a door frame, a door glass is received in an opening of the basic framework, and the glass run is provided with a sealing member that seals the interior and exterior of the door glass, The bottom wall is formed with a door glass side lip that protrudes from the door glass side of the bottom wall, The glass run is characterized in that the bottom wall has a hard portion formed at a portion that abuts against the door glass side lip, the hard portion having a higher hardness than the bottom wall other than the portion that abuts against the door glass side lip.

4. A glass run has a basic framework including a bottom wall, an exterior side wall, and an interior side wall, the basic framework is attached to a door frame, a door glass is received in an opening of the basic framework, and the glass run is provided with a sealing member that seals the interior and exterior of the door glass, The bottom wall is formed with a door frame side lip that protrudes from the door frame side surface of the bottom wall, a door frame side bulge portion that bulges out from the door frame side surface of the bottom wall toward the door frame; The glass run is characterized in that the door frame side bulge portion has a harder hardness than the bottom wall.

5. The glass run according to claim 4, wherein the door frame-side bulging portion is interposed between the bottom wall and the door frame-side lip.

Images