Glass run

Abstract

To provide a glass run which enables vibration of door glass to flow efficiently and be dispersed.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 glass run 10 guides ascending and descending of door glass 4 with the basic skeleton attached to a door frame 3. At the vehicle inner side of the vehicle outer side wall 30 of the glass run 10, a hard part 31 which slidably contacts with the door glass 4 and has hardness higher than that of the vehicle outer side wall 30 is formed. When a thickness of the hard part 31 is referred to as t1 and a sum of thicknesses of the hard part 31 and the vehicle outer side wall 30 is referred to as T, t1 ranges from 0.4 T to 1.0 T.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] As a technology for reducing noise caused by wind noise, we focused on reducing vibrations by efficiently channeling and dissipating the vibration energy of the door glass to parts that abut against the door glass, known as impedance matching, and achieved noise reduction in Patent Document 1.

[0006] The technology of Patent Document 1 will be described with reference to Fig. 8. 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).

[0007] 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, comes into sliding contact with the door glass 4, and has a higher hardness than the exterior side wall 30. In addition, a plurality of convex ribs 32 are formed continuously and parallel to each other in the longitudinal direction on the interior surface of the thick portion 31.

[0008] The door glass 4 is brought into sliding contact with the thick portion 31 formed on the vehicle exterior side wall 30, and by making the hardness of the thick portion 31 higher than that of the vehicle exterior side wall 30, the difference in rigidity between the door glass 4 and the thick portion 31 is reduced, and impedance matching allows vibrations of the door glass 4 to be efficiently channeled to the thick portion 31 and dissipated. As a result, noise caused by wind noise can be reduced.

[0009] Furthermore, by forming a plurality of convex ribs 32 continuously and parallel to the longitudinal direction on the interior surface of the thick portion 31, it is possible to 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. [Prior art documents] [Patent documents]

[0010] [Patent Document 1] Patent application No. 2021-140940 Summary of the Invention [Problem to be solved by the invention]

[0011] In Patent Document 1, a convex rib 32 is formed on the inside of the thick portion to prevent dust, foreign matter, etc. from getting caught, so the contact between the door glass 4 and the thick portion 31 of the glass run 10 is line contact (point contact in cross section) rather than surface contact. As a result, the effect of increasing rigidity by the thick portion is not fully realized, and the effect of reducing noise caused by wind noise is insufficient. [Means for solving the problem]

[0012] In order to solve the above problem, the present invention of claim 1 is a glass run that has 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 and guiding the raising and lowering of a door glass, wherein a hard portion that is in sliding contact with the door glass and has a harder hardness than the exterior side wall is formed on the interior side of the vehicle, and where the thickness of the hard portion is t1 and the sum of the thicknesses of the hard portion and the exterior side wall is T, t1 is 0.4T or more and 1.0T or less.

[0013] In the present invention of claim 1, a hard portion that is in sliding contact with the door glass and has a harderness than the exterior side wall is formed on the interior side of the exterior side wall, and where t1 is the thickness of the hard portion and T is the sum of the thicknesses of the hard portion and the exterior side wall, t1 is 0.4T or more and 1.0T or less. Therefore, by forming the hard portion thick, the rigidity of the glass run can be increased, and even if a convex rib is formed on the interior side of the hard portion, the effect of the hard portion is fully exerted, and the effect of reducing wind noise can be increased. If t1 is less than 0.4T, the increase in rigidity of the exterior side wall of the glass run, including the hard portion, is insufficient, making it difficult to fully exert the effect of the hard portion.

[0014] If t1 is less than 1.0T, the hard portion may be formed as a single block, or may be divided into a portion that comes into sliding contact with the door glass and a portion inside the vehicle exterior side wall on the vehicle exterior side of the hard portion. When divided into portions inside the vehicle exterior side wall, for example, it may be embedded inside the vehicle exterior side wall, formed so as to be exposed on the vehicle exterior side of the vehicle exterior side wall, or both of the above cases may be considered.

[0015] 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. The present invention of 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 and guiding the raising and lowering of a door glass, wherein a hard portion is formed on the interior side of the exterior side wall, which is in sliding contact with the door glass and has a harderness than the exterior side wall, and where the thickness of the hard portion is t1 and the sum of the thicknesses of the hard portion and the exterior side wall is T, t1 is 0.4T or more and less than 1.0T, and an insert is embedded in the exterior side of the hard portion.

[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 and guiding the raising and lowering of a door glass, characterized in that a hard portion that is in sliding contact with the door glass and has a harder hardness than the exterior side wall is formed on the interior side of the vehicle, and an insert is embedded only on the exterior side of the hard portion of the exterior side wall.

[0017] In the present invention of claim 3, a hard portion that is in sliding contact with the door glass and has a harderness than the exterior side wall is formed on the interior side of the exterior side wall of the glass run, and the insert is embedded only on the exterior side of the hard portion of the exterior side wall.Therefore, the rigidity of the glass run can be increased by the hard portion and the exterior side wall in which the insert is embedded, and even if a convex rib is formed on the interior side of the hard portion, the effect of the hard portion can be fully exerted, and the noise reduction effect caused by wind noise can be increased.

[0018] The present invention of claim 4 is the invention of claim 2 or claim 3, wherein the insert is a glass run that is a metal plate, a wire carrier, or a wire core material.

[0019] In the present invention of claim 4, the insert is a metal plate, a wire carrier, or a wire core material, so that it can be embedded as a thin plate in the vehicle exterior side wall by co-extrusion molding when forming the glass run. As a result, the rigidity of the glass run can be increased, the effect of the hard portion can be fully exerted, and the effect of reducing wind noise can be increased.

[0020] Here, the wire carrier is a long, thin, plate-like piece formed by bending a thin wire as a core material in a zigzag pattern at a constant width and holding the core material in the longitudinal direction with a plurality of threads.

[0021] The present invention of claim 5 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 and guiding the raising and lowering of a door glass, wherein a hard portion that comes into sliding contact with the door glass is formed on the interior side of the exterior side wall, and a semi-hard material portion made of a semi-hard material is formed at a portion of the exterior side wall that connects to the hard portion, and the hardness of the semi-hard material portion is smaller than that of the hard portion and greater than that of the exterior side wall other than the semi-hard material portion.

[0022] In the present invention of claim 5, a hard portion that comes into sliding contact with the door glass is formed on the vehicle interior side of the vehicle exterior side wall, and a semi-hard material portion made of a semi-hard material is formed at the portion of the vehicle exterior side wall that connects to the hard portion, and the hardness of the semi-hard material portion is smaller than that of the hard portion and greater than that of the vehicle exterior side wall other than the semi-hard material portion, so that the rigidity of the vehicle exterior side wall in the portion where the hard portion is formed can be increased. As a result, since the rigidity of the glass run is increased, the effect of the hard portion is fully exerted even when a convex rib is formed on the vehicle interior side of the hard portion, and the effect of reducing noise caused by wind noise can be increased. The present invention of claim 6 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 and guiding the raising and lowering of a door glass, wherein a hard portion is formed on the interior side of the exterior side wall that is in sliding contact with the door glass and has a harder hardness than the exterior side wall, and the hard portion is divided into a portion that is in sliding contact with the door glass and a portion inside the exterior side wall. According to a seventh aspect of the present invention, in the sixth aspect of the present invention, the hard portion formed in the vehicle exterior side wall is a glass run formed so as to be exposed to the vehicle exterior side of the vehicle exterior side wall. The present invention of claim 8 is the glass run of claim 6 or 7, wherein a convex rib is formed on the interior surface of the hard portion. The present invention of claim 9 is the invention of claim 6 or claim 7, wherein the hard portion exposed to the vehicle exterior is a glass run abutting on the door frame with its surface. The present invention of claim 10 is the invention of claim 6 or claim 7, wherein the hard portion exposed to the vehicle exterior is a glass run formed as a protrusion. The present invention of claim 11 is a glass run according to claim 6 or claim 7, in which t1 is the thickness of the hard portion, T is the sum of the thicknesses of the hard portion and the vehicle exterior side wall, t2 is the thickness of the portion of the hard portion that slides against the door glass, and t3 is the thickness of the inside of the vehicle exterior side wall, where t2+t3=t1, and t1 is 0.4T or more and less than 1.0T. [Effects of the Invention]

[0023] A hard portion is formed on the interior side of the exterior side wall of the glass run, which is in sliding contact with the door glass and has a harder hardness than the exterior side wall of the exterior side wall. When the thickness of the hard portion is t1 and the sum of the thicknesses of the hard portion and the exterior side wall is T, t1 is not less than 0.4T and not more than 1.0T. Therefore, by forming the hard portion to be thick, the rigidity of the glass run can be increased, and even if a convex rib is formed on the interior side of the hard portion, the effect of the hard portion is fully exerted, and the noise reduction effect caused by wind noise can be increased.

[0024] Furthermore, a hard portion that is in sliding contact with the door glass and has a higher hardness than the exterior side wall is formed on the interior side of the exterior side wall, and an insert is embedded only on the exterior side of the hard portion of the exterior side wall.As a result, the rigidity of the glass run can be increased by the exterior side wall in which the hard portion and insert are embedded, and even if a convex rib is formed on the interior side of the hard portion, the effect of the hard portion is fully exerted, and the noise reduction effect caused by wind noise can be increased.

[0025] Furthermore, a hard portion that comes into sliding contact with the door glass is formed on the interior side of the exterior side wall, and a semi-hard material portion made of a semi-hard material is formed at the portion of the exterior side wall that connects to the hard portion, and the hardness of the semi-hard material portion is less than that of the hard portion but greater than that of the exterior side wall other than the semi-hard material portion, so that the rigidity of the portion of the exterior side wall where the hard portion is formed can be increased. As a result, the rigidity of the glass run is increased, and the effect of the hard portion is fully exerted, even if a convex rib is formed on the interior side of the hard portion, and the noise reduction effect due to wind noise can be increased. [Brief explanation of the drawings]

[0026] [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] 2A and 2B are cross-sectional views of a glass run according to a first embodiment of the present invention, where FIG. 2A is a cross-sectional view corresponding to line XX in FIG. 1, and FIG. 2B is a cross-sectional view corresponding to line YY in FIG. [Figure 4] 2A and 2B are cross-sectional views of a glass run according to a second embodiment of the present invention, where FIG. 2A is a cross-sectional view corresponding to line XX in FIG. 1, and FIG. 2B is a cross-sectional view corresponding to line YY in FIG. [Figure 5] 2A and 2B are cross-sectional views of a glass run according to a third embodiment of the present invention, where FIG. 2A is a cross-sectional view corresponding to line XX in FIG. 1, and FIG. 2B is a cross-sectional view corresponding to line YY in FIG. [Figure 6] 2A and 2B are cross-sectional views of a glass run according to a fourth embodiment of the present invention, where FIG. 2A is a cross-sectional view corresponding to line XX in FIG. 1, and FIG. 2B is a cross-sectional view corresponding to line YY in FIG. [Figure 7] 1. It is a glass run of the fifth embodiment of the present invention, (a) is a cross-sectional view corresponding to the line XX in FIG. 1, and (b) is a cross-sectional view corresponding to the line YY in FIG. [Figure 8] FIG. 2 is a cross-sectional view of a glass run according to the prior art, taken along line XX in FIG. 1 (Patent Document 1). DETAILED DESCRIPTION OF THE INVENTION

[0027] A first embodiment of the present invention will be described with reference to Figs. 1 to 3. 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.

[0028] 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.

[0029] Fig. 3(a) is a cross-sectional view corresponding to line XX in Fig. 1, and Fig. 3(b) is a cross-sectional view corresponding to line YY in Fig. 1. The glass run 10 has a channel shape (having a substantially U-shaped cross section) and is basically composed of a bottom wall 20, an exterior side wall 30, and an interior side wall 40. The connection 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.

[0030] (Bottom wall 20) 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, in Fig. 3(a), 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.

[0031] (Outside of the car) In Figure 3(a), a first exterior retaining lip 33 and a second exterior retaining lip 34 that engage with the door frame groove 5 are formed on the exterior side of the exterior side wall 30 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.

[0032] 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 hard portion 31 and preventing deterioration of the hard portion 31, which will be described later. The cover lip 36 also improves the sealing performance with the door glass 4.

[0033] 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.

[0034] 3(b), a protrusion 55 is formed on the outer side of the middle portion of the outer-side side wall 30. The outer-side side wall 30 is also formed with an outer-side seal lip 38 that extends from an outer-side wall tip 39 toward the inside and outside of the vehicle and toward the bottom wall 20, and whose inner-side side surface is in sliding contact with the door glass 4. The outer-side seal lip 38 does not abut against a hard portion 31, which will be described later.

[0035] 3(a) and 3(b), the outer side of the protrusion 55 of the outer side wall 30 is in surface contact with the door frame groove 5. By making the surface contact, the rigidity of the outer side wall 30 sandwiched between the door glass 4 and the door frame groove 5 can be increased.

[0036] (Inside the car) 3(a), 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 the bottom wall 20, with the exterior side surface thereof in sliding contact with the door glass 4. The interior seal lip 41 is designed so that when the door glass 4 slides against the hard portion 31 of the exterior side wall 30 and the interior seal lip 41, the reaction forces from the exterior and interior sides that the door glass 4 receives are greater on the interior side than on the exterior side, increasing the pressing force of the door glass 4 toward the hard portion 31.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] On the other hand, in Figure 3(b), a first interior retaining lip 43 and a second interior retaining lip 44 that engage with the curved portion of the door frame groove 5 are formed on the interior side of the interior side wall 40, and a cover lip 46 is formed on the interior side wall tip 47 of the interior side wall 40 toward the interior side of the vehicle, and the second interior retaining lip 44 and the cover lip 46 hold the interior side wall 40 in the curved door frame groove 5.

[0041] (Hard part 31) 3(a) and 3(b), a hard portion 31 is formed on the interior side of the vehicle exterior side wall 30. The hard portion 31 protrudes toward the interior of the vehicle, comes into sliding contact with the door glass 4, and has a higher hardness than the exterior side wall 30. By bringing the door glass 4 into sliding contact with the hard portion 31 formed on the exterior side wall 30 and making the hardness of the hard portion 31 higher than that of the exterior side wall 30, the difference in rigidity between the door glass 4 and the hard portion 31 is reduced, and impedance matching allows vibrations from the door glass 4 to be efficiently channeled to the hard portion 31 and dissipated, thereby reducing noise caused by wind.

[0042] A plurality of convex ribs 32 are formed continuously in parallel in the longitudinal direction on the interior surface of the hard portion 31. The ribs 32 prevent dust, dirt, foreign matter, etc. from getting caught in the hard portion 31 when the door glass 4 is raised or lowered, thereby preventing the generation of abnormal noise.

[0043] In this first embodiment, the hard portion 31 is formed thicker than the thick portion 31 in Figure 8, and in this first embodiment, when the thickness of the hard portion 31 is t1 and the sum of the thicknesses of the hard portion 31 and the outer side wall 30 is T, t1 = 0.7T.

[0044] By forming the hard portion 31 thick, the rigidity of the glass run 10 can be increased, and even if a convex rib 32 is formed on the inside of the hard portion 31, the effect of the hard portion 31 is fully exerted, and the effect of reducing noise caused by wind noise can be increased.

[0045] From the perspective of increasing the rigidity of the outer vehicle side wall 30 of the glass run 10, it is desirable that the thickness t1 of the rigid portion 31 is 0.4T or more. Also, when the thickness t1 of the rigid portion 31 is less than 1.0T, the rigid portion 31 may be formed as one piece, or may be formed by dividing it into a portion that slidably contacts the door glass 4 and a portion within the outer vehicle side wall 30. When the rigid portion 31 is formed by dividing it within the outer vehicle side wall 30, for example, it may be the case of embedding it inside the outer vehicle side wall 30, forming it so as to be exposed on the outer side of the outer vehicle side wall 30, or including both of the above cases.

[0046] Here, FIG. 3(b) shows a form in which the rigid portion 31 is formed as one piece and the thickness t1 of the rigid portion 31 is set to t1 = 0.7T. On the other hand, FIG. 3(a) shows a form in which the rigid portion 31 is formed by dividing it into a portion that slidably contacts the door glass 4 and a portion that is exposed on the outer side of the outer vehicle side wall 30. The thickness of the rigid portion 31 on the door glass 4 side is t2, and the thickness of the rigid portion 31 that is exposed on the outer side is t3, and the sum of their thicknesses is the thickness t1 of the rigid portion 31, that is, t1 = t2 + t3, and t1 = 0.7T. In FIG. 3(a), although it is drawn as t2 < t3, it may also be t2 ≧ t3.

[0047] In the present embodiment, the glass run 10 excluding the rigid portion 31 uses an olefin-based thermoplastic elastomer (TPO) with an IRHD (International Rubber Hardness) of 80 ± 5, and the rigid portion 31 uses a TPO with an IRHD of 100 ± 5 and is produced by extrusion molding (co-extrusion molding). When the rigid portion 31 is formed by dividing it as shown in FIG. 3(a), since the rigid portion 31 on the outer side (the portion of t3) does not contact the door glass 4, a TPO with an IRHD of between 85 and 105 may be used and may be different from the rigid portion 31 on the inner side (the portion of t2) of the vehicle.

[0048] In the embodiment of the present invention, the glass run 10 may be made of a material other than olefin-based thermoplastic elastomer (TPO), 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, dynamically crosslinked thermoplastic elastomer (TPV) is preferable from the viewpoints of weather resistance, recyclability, cost, etc.

[0049] Next, a second embodiment of the present invention will be described with reference to Figures 4(a) and 4(b). The second embodiment differs from the first embodiment in that, although the thickness of the hard portion 31 is the same as that in Figure 8, an insert 51 is embedded in the outer side wall 30 on the outer side of the hard portion 31.

[0050] In the second embodiment, a cold-rolled steel plate (SPCC) having a thickness of 0.5 mm was used. When the glass run 10 is embedded in the vehicle exterior side wall 30, the thickness is preferably 0.5 mm to 1.0 mm. The material is not limited to SPCC, and other metal materials such as aluminum or stainless steel may be used. The metal plate may be a metal mesh or a punched metal in which holes are formed in the metal plate. The insert 51 is extrusion molded together with the glass run 10 (co-extrusion molding).

[0051] By embedding a metal plate insert 51 in the exterior side wall 30 on the exterior side of the hard portion 31, the rigidity of the glass run 10 can be increased, and even if a convex rib 32 is formed on the interior side of the hard portion 31, the effect of the hard portion 31 can be fully exerted, and the effect of reducing noise caused by wind noise can be increased.

[0052] Next, a third embodiment of the present invention will be described with reference to FIGS. 5(a) and 5(b). The third embodiment is a modification of the second embodiment, in which a wire carrier 52 is embedded. As described above, a wire carrier is a long, thin, plate-like piece formed by bending a thin wire serving as a core material in a zigzag pattern at a constant width and holding it in the longitudinal direction with multiple threads. In this third embodiment, an iron material with a diameter of 0.5 mm is used as the core material. Furthermore, a non-thermofusible thread, PET (polyethylene terephthalate), is used as the thread that holds the core material and suppresses longitudinal elongation.

[0053] The core material is not limited to iron but may be other metals, and the diameter of the core material is not limited to 0.5 mm. However, from the viewpoint of increasing the rigidity of the exterior side wall 30 of the glass run 10, the diameter is preferably 0.5 mm to 1.0 mm.

[0054] Furthermore, the thread that holds the core material and suppresses longitudinal elongation is not limited to PET, which is a non-thermofusible thread; for example, if EPDM rubber is used for the glass run 10, a thermofusible thread that melts in a vulcanization furnace may be used.

[0055] By embedding the wire carrier 52 in the exterior side wall 30 on the exterior side of the hard portion 31, the rigidity of the glass run 10 can be increased, and even if a convex rib 32 is formed on the interior side of the hard portion 31, the effect of the hard portion 31 can be fully exerted, and the effect of reducing noise caused by wind noise can be increased.

[0056] Next, a fourth embodiment of the present invention will be described with reference to FIGS. 6(a) and 6(b). The fourth embodiment is a modification of the second embodiment, in which five wire cores 53 are embedded. Five iron cores with a diameter of 0.5 mm are used as the cores. Note that the wire cores 53 are not limited to iron and may be made of other metals, and the diameter is not limited to 0.5 mm. However, from the viewpoint of increasing the rigidity of the exterior sidewall 30 of the glass run 10, the diameter of the wire cores 53 is preferably 0.5 mm to 1.0 mm. Furthermore, the number of embedded wires is not limited to five, but from the viewpoint of increasing rigidity, it is preferable to embed multiple wires.

[0057] By embedding the wire core material 53 in the exterior side wall 30 on the exterior side of the hard portion 31, the rigidity of the exterior side wall 30 of the glass run 10 can be increased, and even if a convex rib 32 is formed on the interior side of the hard portion 31, the effect of the hard portion 31 can be fully exerted, and the effect of reducing noise caused by wind noise can be increased.

[0058] Next, a fifth embodiment of the present invention will be described with reference to Figures 7(a) and 7(b). In the fifth embodiment, a semi-hard material portion 54 made of the semi-hard material of the vehicle exterior side wall 30 is formed in a portion of the vehicle exterior side wall 30 that connects to the hard portion 31, and the hardness of the semi-hard material portion 54 is less than that of the hard portion 31 and greater than that of the vehicle exterior side wall 30 other than the semi-hard material portion 54. The semi-hard material portion 54 is formed so as to penetrate through the vehicle exterior side wall 30 and is in face-to-face contact with the door frame groove portion 5.

[0059] In this embodiment, the hard portion 31 is made of TPO with an IRHD (International Rubber Hardness) of 100±5, the portion of the exterior side wall 30 where the semi-hard material portion 54 is formed is made of TPO with an IRHD of 90±5, and the other portions of the glass run 10 are made of an olefin-based thermoplastic elastomer (TPO) with an IRHD of 80±5, and are produced by extrusion molding.

[0060] In the vehicle exterior side wall 30, a semi-hard material portion 54 made of a semi-hard material is formed at the portion connected to the hard portion 31, so that the rigidity of the glass run 10 can be increased, and even if a convex rib 32 is formed on the vehicle interior side of the hard portion 31, the effect of the hard portion 31 is fully exerted, and the effect of reducing noise caused by wind noise can be increased.

[0061] 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.

[0062] For example, in the first to fifth embodiments described above, in order to increase the rigidity of the vehicle-exterior side wall 30 in the portion where the hard portion 31 is formed, inserts or the like are embedded mainly on the vehicle-exterior side of the hard portion 31, thickening the hard portion 31, or forming the semi-hard material portion 54. However, these may be arranged and formed not only on the vehicle-exterior side connected to the hard portion 31, but also over a wide range of the vehicle-exterior side wall 30. In this case, taking into consideration the ease of assembling the glass run 10 into the door frame groove 5 of the door frame 3, they may be arranged and formed in an area excluding the vehicle-exterior groove 21 which is the connecting portion between the bottom wall 20 and the vehicle-exterior side wall 30.

[0063] For example, the glass run 10 of the above-described embodiments shown in Figures 3(b), 4(b), 5(b), 6(b) and 7(b) can be applied to the first extrusion molding portion 11 in Figure 2.

[0064] In the above first to fifth embodiments, a case where multiple convex ribs 32 are formed on the vehicle interior surface of the hard portion 31 has been described, but the present invention can also be applied to a hard portion that does not have convex ribs 32 formed thereon. [Explanation of symbols]

[0065] 1. Front door 2 Door body 3 Door Frame 5 Door frame groove 10 Glass Run 20 Bottom Wall 30 Outside side wall 31 Hard part (thick part) 32 Ribs 38 Outer seal lip 40 Inner side wall 41 Inner seal lip 51 Insert 52 Wire Carrier 53 Wire core material 54 Semi-rigid material part

Claims

1. A glass run having a basic framework including a bottom wall, an exterior side wall, and an interior side wall, the basic framework being attached to a door frame and guiding the raising and lowering of a door glass, a hard portion that is in sliding contact with the door glass and has a harder surface than the vehicle exterior side wall is formed on the vehicle interior side of the vehicle exterior side wall; When the thickness of the hard portion is t1 and the sum of the thickness of the hard portion and the thickness of the vehicle exterior side wall is T, The glass run is characterized in that t1 is 0.4T or more and 1.0T or less.

2. A glass run having a basic framework including a bottom wall, an exterior side wall, and an interior side wall, the basic framework being attached to a door frame and guiding the raising and lowering of a door glass, a hard portion that is in sliding contact with the door glass and has a harder surface than the vehicle exterior side wall is formed on the vehicle interior side of the vehicle exterior side wall; When the thickness of the hard portion is t1 and the sum of the thickness of the hard portion and the thickness of the vehicle exterior side wall is T, t1 is equal to or greater than 0.4 T and less than 1.0 T, The glass run is characterized in that an insert is embedded in the hard portion on an outer side of the vehicle.

3. A glass run having a basic framework including a bottom wall, an exterior side wall, and an interior side wall, the basic framework being attached to a door frame and guiding the raising and lowering of a door glass, a hard portion that is in sliding contact with the door glass and has a harder surface than the vehicle exterior side wall is formed on the vehicle interior side of the vehicle exterior side wall; A glass run, characterized in that an insert is embedded only on an outer side of the hard portion of the outer side wall of the vehicle.

4. The glass run according to claim 2 or 3, wherein the insert is a metal plate, a wire carrier, or a wire core.

5. A glass run having a basic framework including a bottom wall, an exterior side wall, and an interior side wall, the basic framework being attached to a door frame and guiding the raising and lowering of a door glass, a hard portion that is in sliding contact with the door glass is formed on the vehicle interior side of the vehicle exterior side wall, a semi-hard material portion made of a semi-hard material is formed at a portion of the exterior side wall connected to the hard portion, and the hardness of the semi-hard material portion is smaller than that of the hard portion and greater than that of the exterior side wall other than the semi-hard material portion.

6. A glass run having a basic framework including a bottom wall, an exterior side wall, and an interior side wall, the basic framework being attached to a door frame and guiding the raising and lowering of a door glass, a hard portion that is in sliding contact with the door glass and has a harder surface than the vehicle exterior side wall is formed on the vehicle interior side of the vehicle exterior side wall; The glass run is characterized in that the hard portion is divided into a portion that comes into sliding contact with the door glass and a portion inside the vehicle exterior side wall.

7. The glass run according to claim 6 , wherein the hard portion formed in the vehicle exterior side wall is formed so as to be exposed to the vehicle exterior side of the vehicle exterior side wall.

8. 8. The glass run according to claim 6, wherein a convex rib is formed on an interior surface of the hard portion.

9. 8. The glass run according to claim 6, wherein the hard portion exposed to the vehicle exterior is in surface contact with the door frame.

10. 8. The glass run according to claim 6, wherein the hard portion exposed to the vehicle exterior is formed as a protrusion.

11. 8. The glass run according to claim 6 or 7, wherein t1 is a thickness of the hard portion, T is a sum of a thickness of the hard portion and the vehicle exterior side wall, t2 is a thickness of a portion of the hard portion that is in sliding contact with the door glass, and t3 is a thickness of an inner side of the vehicle exterior side wall, and t2 + t3 = t1, and t1 is 0.4T or more and less than 1.0.

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