Glass run

Abstract

To provide a glass run capable of efficiently dissipating vibrations of a door glass even when a gap between a vehicle exterior side wall and the door glass is narrow.MEANS FOR SOLVING THE PROBLEM: In a glass run 10 that has a basic framework of a bottom wall 20, an outer side wall 40, and an inner side wall 40, and is attached to a door frame 3 to guide a door glass 4 up and down, an outer side wall 30 has a hard part 33, which is harder than a material that makes up the outer side wall 30, formed internally from an interior side 31 of the outer side wall 30.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. In addition, electric vehicles, which are expected to rapidly spread in the future, no longer have engines as they were previously installed, and the main noises that remain without the engine noise are road noise and wind noise. Therefore, there is a greater need than ever for technology to reduce these noises.

[0003] Wind noise is the sound that is generated outside the vehicle cabin when the wind hits the vehicle while it is moving, and then passes through the vehicle body and reaches the inside of the vehicle. It is known that the door glass, which is close to the ears of the passengers inside the vehicle, is the biggest contributor to wind noise, and measures such as increasing the thickness of the door glass and installing acoustic glass have been implemented, but the increased weight and cost are obstacles.

[0004] Incidentally, in addition to door glass, it is possible to reduce noise in the glass run, which is the sealing material between the door glass and the door frame, particularly in the high frequency range of 1 kHz or more. As a technology for reducing noise caused by wind noise, it is also possible to reduce vibration by efficiently directing the vibration energy of the door glass to the glass run that abuts against the door glass and dissipating it, which is so-called impedance matching. Studies are being conducted to increase the effect of this reduction (for example, Patent Document 1 and Patent Document 2).

[0005] FIG. 4 shows the technology described in Patent Document 1. Patent Document 1 describes a glass run 100 that has a basic skeleton including a bottom wall 200, an exterior side wall 300, and an interior side wall 400, and that is attached to a door frame groove 500 formed in a door frame to guide the raising and lowering of a door glass 600. A thick portion 320 that protrudes toward the interior of the vehicle and is in sliding contact with the door glass 600 and has a higher hardness than the exterior side wall main body portion 310 of the exterior side wall 300 is formed on the interior side of the vehicle. This increases the rigidity of the glass run 100, reduces the rigidity difference between the door glass 600 and the exterior side wall 300, and allows the vibration energy of the door glass to flow and dissipate efficiently when it is in sliding contact with the door glass due to impedance matching. As a result, it is described that noise due to wind noise can be reduced.

[0006] 5 shows the technology described in Patent Document 2. Patent Document 2 discloses a glass run 100 having a basic skeleton including a bottom wall 200, an exterior side wall 300, and an interior side wall 400, the basic skeleton being attached to a door frame groove 500 formed in a door frame, and guiding the raising and lowering of a door glass 600, in which a thick portion 320 is formed on the interior side of the exterior side wall 300 of the glass run 100, protruding toward the interior of the vehicle and in sliding contact with the door glass 600, and having a harderness than the exterior side wall 300, where t1 is the thickness of the thick portion 320 and T is the sum of the thicknesses of the thick portion 320 and the exterior side wall 300, and t1 is 0.4T or more and 1.0T or less.

[0007] In FIG. 5, thick portion 320 is divided into a portion that comes into sliding contact with door glass 600 and a portion that is exposed to the outside of vehicle of exterior side wall 300, the thickness of thick portion 320 on the door glass 600 side is t2, the thickness of thick portion 320 that is exposed to the outside of the vehicle is t3, and the sum of these thicknesses is thickness t1 of thick portion 320, that is, t1=t2+t3, where t1=0.7T.

[0008] As a result, it is described that the rigidity of the glass run 100 can be increased by making the thick portion 320 thicker, and even if a convex rib 350 is formed on the inside of the vehicle of the thick portion 320, the effect of the thick portion 320 is fully exerted, and the effect of reducing noise due to wind noise can be increased. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] JP 2023-053894 A [Patent Document 2] JP 2023-106008 A Summary of the Invention [Problem to be solved by the invention]

[0010] However, the shape of the door frame often differs for each vehicle model, and the shape of the gap between the door glass and the door frame also varies. For example, when the gap between the door glass and the vehicle exterior side wall is narrow, it is difficult to form the thick part by partially protruding as shown in Fig. 4 (Patent Document 1) and Fig. 5 (Patent Document 2). [Means for solving the problem]

[0011] The present invention provides a glass run having increased rigidity including the vehicle exterior side wall, particularly when the gap between the vehicle exterior side wall and the door glass is narrow.

[0012] In order to solve the above problems, the present invention of claim 1 is a glass run that has a basic skeleton 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, characterized in that the exterior side wall has a hard portion that is harder than the material that constitutes the exterior side wall, formed inward from the interior surface of the exterior side wall.

[0013] In the present invention of claim 1, the vehicle exterior side wall has a hard portion formed from the vehicle interior side surface of the vehicle exterior side wall, which is harder than the material constituting the vehicle exterior side wall, so that the hard portion can abut against the door glass even when the gap between the vehicle exterior side wall and the door glass is narrow. In addition, since the hard portion is formed on the vehicle exterior side wall, the rigidity of the glass run including the vehicle exterior side wall is increased, and the rigidity difference with the door glass is reduced, so that the vibration energy of the door glass can be efficiently dissipated by flowing through the hard portion to the vehicle exterior side wall, i.e., the glass run, through impedance matching. As a result, noise due to wind noise can be reduced.

[0014] 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 part when the glass run is pressed by the door glass. Therefore, "increasing the rigidity of the glass run" means that the slope (gradient) of the relationship between the displacement and the reaction force becomes larger.

[0015] The present invention described in claim 2 is the invention of claim 1, wherein the hard portion is a glass run formed from near the exterior side wall side of the connecting portion between the bottom wall portion and the exterior side wall over substantially the entire interior side of the exterior side wall.

[0016] In the present invention described in claim 2, the hard portion is formed from the vicinity of the outer side wall side of the connecting portion between the bottom wall portion and the outer side wall to substantially the entire area of ​​the inner side of the outer side wall, so that the hard portion can slide against the door glass over a wide area of ​​the inner side of the outer side wall. As a result, even when the hard portion is formed from the inner side surface of the outer side wall to the inside, the vibration energy of the door glass can be efficiently channeled to the hard portion and dissipated when it slides against the door glass, so that noise due to wind noise can be reduced.

[0017] The present invention of claim 3 is the invention of claim 1 or 2, wherein the hard portion is a glass run that is formed beyond the leading end of the door frame when the glass run is attached to the door frame.

[0018] In the present invention of claim 3, the hard portion is formed beyond the tip of the door frame when the glass run is attached to the door frame. Therefore, the hard portion is formed over a wide area from the interior surface of the exterior side wall to the inside, increasing the rigidity of the exterior side wall. The vibration energy of the door glass when it comes into sliding contact with the door glass can be efficiently channeled to the hard portion and dissipated. This makes it possible to reduce noise caused by wind noise and suppress deformation of the exterior side wall that goes beyond the door frame when it comes into sliding contact with the door glass.

[0019] The present invention of claim 4 is the invention of claim 1 or claim 2, in which an exterior hard portion having a harderness than the material constituting the exterior side wall is formed on the exterior side of the vehicle, and the exterior hard portion is a glass run that abuts against the door frame.

[0020] In the present invention of claim 4, an exterior hard portion having a harder hardness than the material constituting the exterior side wall is formed on the exterior side of the vehicle, and the exterior hard portion abuts against the door frame, so that the exterior side wall is sandwiched between the door frame and the door glass, thereby further increasing the rigidity of the glass run including the exterior side wall. As a result, the vibration energy of the door glass can be more efficiently diverted and dissipated due to impedance matching caused by a smaller rigidity difference between the door glass and the glass run, and therefore noise due to wind noise can be further reduced.

[0021] The present invention of claim 5 is the invention of claim 4, wherein the vehicle exterior hard portion is a glass run that is formed beyond a tip end of the door frame when the glass run is attached to the door frame.

[0022] In the present invention of claim 5, the vehicle exterior hard portion is formed beyond the tip of the door frame when the glass run is attached to the door frame, so that the vehicle exterior hard portion is formed over a wide area also on the vehicle exterior side of the vehicle exterior side wall, and the rigidity of the glass run including the vehicle exterior side wall can be increased in combination with the hard portion formed on the vehicle exterior side wall. As a result, the vibration energy of the door glass can be more efficiently diverted and dissipated due to impedance matching caused by a smaller rigidity difference between the door glass and the vehicle exterior side wall, so that noise due to wind noise can be further reduced.

[0023] The present invention of claim 6 is the glass run of claim 1 or 2, in which a convex rib protruding toward the vehicle interior is formed on the vehicle interior side of the hard portion.

[0024] In the present invention of claim 6, a convex rib that protrudes toward the inside of the vehicle is formed on the inside of the hard part, thereby preventing dust, dirt, foreign objects, etc. from getting caught in the hard part when the door glass is raised or lowered, and thereby preventing the generation of abnormal noise. Effect of the Invention

[0025] The glass run has a bottom wall, an exterior side wall, and an interior side wall as a basic framework, is attached to a door frame, and guides the raising and lowering of a door glass, and the exterior side wall has a hard portion formed from the interior side of the exterior side wall, the hard portion being harder than the material constituting the exterior side wall, so that the hard portion can abut against the door glass even when the gap between the exterior side wall and the door glass is narrow. Furthermore, since the hard portion is formed on the exterior side wall, the rigidity of the glass run including the exterior side wall is increased, and the rigidity difference with the door glass is reduced, so that the vibration energy of the door glass can be efficiently channeled to the exterior side wall, i.e., the glass run, and dissipated by impedance matching. As a result, noise due to wind noise can be reduced. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a front view of an automobile door. [Diagram 2] FIG. 2 is a front view showing a glass run used in the door frame of FIG. [Diagram 3] 2 is a cross-sectional view of a glass run according to an embodiment of the present invention, taken along line XX in FIG. 1. [Figure 4] FIG. 2 is a cross-sectional view showing a conventional glass run, taken along line XX in FIG. 1 (Patent Document 1). [Diagram 5] FIG. 2 is a cross-sectional view showing a conventional glass run, taken along line XX in FIG. 1 (Patent Document 2). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[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 the outside of the vehicle. A door frame 3 is attached to the upper part of a door body 2 constituting 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 a sliding door whose door glass rises and falls.

[0028] 2 is a simplified front view of only the glass run 10 as viewed 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. Moreover, 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] 3 is a cross-sectional view corresponding to line XX in FIG. 1, that is, of the third extrusion 13, and this cross section is uniformly formed in the third extrusion 13. The glass run 10 has a bottom wall 20, an exterior side wall 30, and an interior side wall 40 as basic frameworks, and is formed in a channel shape (with a substantially U-shaped cross section). The connection parts 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 shape is formed asymmetrically with the interior side being larger.

[0030] The bottom wall 20, the exterior side wall 30 and the interior side wall 40 are attached in the door frame groove portion 5 of the door frame 3. The door frame 3 is a pressed door in which an outer frame 52 is connected to the exterior side of the door frame groove portion 5 and an inner frame 53 is connected to the interior side of the door frame groove portion 5.

[0031] The bottom wall 20 is formed in a substantially plate-like shape, and a plurality of bottom wall recesses 22 are formed continuously and parallel to each other in the longitudinal direction on the inner surface (the door glass 4 side) of the bottom wall 20. When the glass run 10 is attached in the door frame groove 5 of the door frame 3, the bottom wall 20 abuts against the door frame groove 5.

[0032] An exterior-side retaining lip 36 is formed on the exterior side of the exterior side wall 30 near the joint with the bottom wall 20, and an exterior-side retaining rib 37 having a generally triangular cross section is formed to protrude from the exterior-side wall tip portion 30a of the exterior side wall 30 of the exterior-side retaining lip 36. When the glass run 10 is attached to the door frame groove 5 of the door frame 3, the exterior-side retaining lip 36 climbs over the exterior-side recess 54 of the door frame groove 5, and holds the exterior-side side wall 30 in the door frame groove 5 with the exterior-side recess 54 sandwiched between the exterior-side retaining lip 36 and the exterior-side retaining rib 37.

[0033] The exterior side wall 30 is formed in a substantially straight line, and the exterior side wall tip 30a is curved toward the exterior of the vehicle. By curving the exterior side wall tip 30a toward the exterior of the vehicle, a connection portion between the exterior cover lip 38 formed at the exterior side wall tip 30a (described later) and the exterior side wall 30 can be located on the exterior side of the vehicle, making it easy to curve the exterior cover lip 38 toward the exterior of the vehicle when it abuts against the door glass 4.

[0034] On the interior side of the exterior side wall 30, a hard portion 33 having a harderness than the material constituting the exterior side wall 30 is formed from the interior surface 31 to the interior of the exterior side wall 30 in a region from near the groove portion 21, which is a connecting portion of the exterior side wall 30 with the bottom wall 20, excluding the curved exterior side wall tip portion 30a of the exterior side wall 30, i.e., in almost the entire linear portion. The hard portion 33 is exposed to the interior side of the exterior side wall 30.

[0035] As is clear from FIG. 3, when the glass run 10 is attached in the door frame groove 5 of the door frame 3 , the hard portion 33 is formed beyond the tip end 51 of the door frame groove 5 .

[0036] Furthermore, on the vehicle interior surface of the hard portion 33, a plurality of (three in FIG. 3) convex ribs 35 are formed continuously and parallel to each other in the longitudinal direction.

[0037] An exterior hard portion 34 having a harderness than the material constituting the exterior side wall 30 is formed from the exterior side surface 32 of the exterior side wall 30 in an area on the exterior side of the exterior side wall 30 that connects the triangular apex of the exterior holding rib 37 and the curved portion of the exterior side wall tip portion 30a of the exterior side wall 30. The exterior hard portion 34 and the hard portion 33 are formed from the same material. Note that the exterior hard portion 34 and the hard portion 33 may be formed from materials having different hardnesses.

[0038] When the glass run 10 is attached to the door frame groove 5 , the vehicle exterior hard portion 34 abuts against the inner surface of the door frame groove 5 .

[0039] As is apparent from FIG. 3, when the glass run 10 is attached in the door frame groove 5 of the door frame 3, the vehicle exterior hard portion 34 is formed beyond the tip end 51 of the door frame groove 5.

[0040] An exterior cover lip 38 is formed at the exterior side wall tip 30a of the exterior side wall 30 toward the door glass 4 and opposite the bottom wall 20. An exterior cover lip recess 38a is formed on the interior side of the base of the exterior cover lip 38, which facilitates bending of the exterior cover lip 38 toward the exterior of the vehicle when the exterior cover lip 38 abuts against the door glass 4. The exterior cover lip 38 abuts against the exterior surface of the door glass 4, suppressing the intrusion of rainwater and dust into the hard portion 33 and preventing deterioration of the hard portion 33. It also improves the sealing performance with the door glass 4. The exterior cover lip 38 is sometimes called an exterior seal lip because it improves the sealing performance with the door glass 4.

[0041] Further, a locking lip 39 is formed facing the exterior of the vehicle at the exterior sidewall tip 30a of the exterior sidewall 30, which is a connecting portion between the exterior cover lip 38 and the exterior sidewall tip 30a. The locking lip 39 abuts against the interior side of the end of the pillar garnish 6 and seals the gap between the pillar garnish 6 and the surface of the door glass 4 together with the exterior cover lip 38. A locking lip recess 39a is formed at the base of the locking lip 39, which facilitates bending of the locking lip 39 toward the interior of the vehicle when it abuts against the end of the pillar garnish 6.

[0042] A first interior seal lip 41 and a second interior seal lip 42 are formed on the exterior side of the interior side wall 40, which extend from between the interior side wall tip portion 40a and the bottom wall 20 toward the bottom wall 20, and whose exterior side surfaces are in sliding contact with the door glass 4.

[0043] Further, a sub-lip 43 is formed on the outer side of the inner side wall 40, closer to the bottom wall 20 than the second inner seal lip 42, in the opposite direction to the second inner seal lip 42. The sub-lip 43 does not abut on the inner side surface of the second inner seal lip 42 when in sliding contact with the door glass 4. When the door is closed strongly or the car is driven on a rough road with the door glass 4 slightly open and the door glass 4 moves significantly toward the inner side of the car, the sub-lip 43 abuts on the inner side surface of the second inner seal lip 42 and presses the second inner seal lip 42 toward the outer side of the car, thereby preventing the generation of a striking sound (abnormal sound) due to separation and abutment between the door glass 4 and the second inner seal lip 42.

[0044] An interior side retaining lip 44 is formed on the interior side of the interior side wall 40 near the joint with the bottom wall 20, and an interior side retaining rib 45 is formed on the interior side wall tip portion 40a side of the interior side wall 40. When the glass run 10 is attached to the door frame groove 5 of the door frame 3, the interior side retaining lip 44 climbs over the interior side recess 55 of the door frame groove 5 and holds the interior side wall 40 in the door frame groove 5 with the interior side retaining lip 44 and the interior side retaining rib 45 sandwiching the interior side recess 55.

[0045] A cover lip 46 is formed on the interior side wall tip portion 40a of the interior side wall 40 toward the interior of the vehicle and toward the bottom wall 20. The cover lip 46 abuts against the inner frame 53 to prevent the intrusion of rainwater, dust, and noise and to improve the sealing performance with the inner frame 53.

[0046] As described above in detail, according to this embodiment, the following effects can be obtained. (1) In this embodiment, the hard portion 33 and the exterior hard portion 34 are uniformly formed within the third extrusion portion 13. Therefore, the hard portion 33 and the exterior hard portion 34 can be easily formed by extrusion molding, and the productivity is excellent.

[0047] (2) In this embodiment, the hard portion 33, which has a harderness than the material constituting the vehicle-exterior side wall 30, is formed from the vehicle interior surface 31 to the inside of the vehicle-exterior side wall 30. Therefore, even if the gap between the vehicle-exterior side wall 30 and the door glass 4 is narrow, the hard portion 33 can be brought into contact with the door glass 4. Furthermore, by forming the hard portion 33 on the vehicle-exterior side wall 30 and having the hard portion 33 slide against the door glass 4, the rigidity difference between the door glass 4 and the vehicle-exterior side wall 30 is reduced, and the vibration energy of the door glass 4 can be efficiently channeled to the hard portion 33 and dissipated by impedance matching. As a result, noise due to wind noise can be reduced.

[0048] (3) In this embodiment, the hard portion 33 is formed in the area excluding the vicinity of the groove portion 21, which is the connecting portion of the exterior side wall 30 with the bottom wall 20, to the curved exterior side wall tip portion 30a of the exterior side wall 30, i.e., in almost the entire straight portion, so that the hard portion 33 can slide against the door glass 4 over a wide area on the interior side of the exterior side wall 30. As a result, even when the hard portion 33 is formed inward from the interior surface 31 of the exterior side wall 30, the vibration energy of the door glass 4 can be efficiently channeled to the hard portion 33 and dissipated during sliding contact with the door glass 4, so that noise due to wind noise can be reduced.

[0049] (4) In this embodiment, the hard portion 33 is formed beyond the tip portion 51 of the door frame groove portion 5. Therefore, the hard portion 33 is formed over a wide area from the interior surface 31 of the vehicle exterior side wall 30 inward, thereby increasing the rigidity of the vehicle exterior side wall 30. The vibration energy of the door glass 4 when it slides against the door glass 4 can be efficiently channeled to the hard portion 33 and dissipated. This reduces noise due to wind noise and suppresses deformation of the vehicle exterior side wall 30 that passes beyond the door frame groove portion 5 (door frame 3) when it slides against the door glass 4.

[0050] (5) In this embodiment, in the area on the outside of the vehicle exterior side wall 30 that connects the outside retaining rib 37 and the curved portion of the outside side wall tip portion 30a of the vehicle exterior side wall 30, an outside hard portion 34 that is harder than the material that constitutes the vehicle exterior side wall 30 is formed from the outside surface 32 of the vehicle exterior side wall 30, thereby further increasing the rigidity of the vehicle exterior side wall 30.

[0051] (6) In this embodiment, when the glass run 10 is attached to the door frame groove 5, the vehicle-exterior hard portion 34 abuts against the inner surface of the door frame groove 5, so that the vehicle-exterior side wall 30 is sandwiched between the door frame groove 5 and the door glass 4, i.e., the rigidity of the vehicle-exterior side wall 30 can be further increased by sandwiching the hard portion 33 between the door glass 4 and the vehicle-exterior hard portion 34 between the door frame groove 5. As a result, the rigidity difference between the door glass 4 and the glass run 10 is further reduced, and impedance matching is achieved, so that the vibration energy of the door glass 4 can be more efficiently channeled and dissipated, thereby further reducing noise due to wind noise.

[0052] (7) In this embodiment, the exterior-side hard portion 34 is formed beyond the tip portion 51 of the door frame groove portion 5 when the glass run 10 is attached to the door frame 3. Therefore, the exterior-side hard portion 34 is formed over a wide area also on the exterior side of the exterior side wall 30. This, together with the hard portion 33 formed on the interior side of the vehicle, increases the rigidity of the glass run 10 including the exterior side wall 30.

[0053] (8) In this embodiment, a plurality of (three in FIG. 3 ) convex ribs 35 are formed continuously and parallel to each other in the longitudinal direction on the vehicle interior surface of the hard portion 33. This makes it possible to prevent dust, dirt, foreign matter, etc. from becoming caught between the hard portion 33 and the door glass 4 when the door glass 4 is raised or lowered, thereby preventing the generation of abnormal noise.

[0054] (9) In this embodiment, an exterior cover lip 38 is formed on the exterior side wall tip 30a of the exterior side wall 30 toward the door glass 4 and opposite the bottom wall 20, so that the hard portion 33 can be extended to the vicinity of the exterior side wall tip 30a.

[0055] (10) In this embodiment, the exterior cover lip recess 38a is formed on the interior side of the base portion of the exterior cover lip 38, which facilitates bending of the exterior cover lip 38 toward the exterior side of the vehicle when the exterior cover lip 38 abuts against the door glass 4, and facilitates movement of the door glass 4 toward the exterior side of the vehicle. As a result, the door glass 4 can be easily abutted against the hard portion 33.

[0056] As described above, the hard portion 33 is formed in the area excluding the vicinity of the groove portion 21, which is the connecting portion of the exterior side wall 30 with the bottom wall 20, to the curved exterior side wall tip portion 30a of the exterior side wall 30, i.e., in almost the entire linear portion. Therefore, even if the convex rib 35 is formed on the interior side of the hard portion 33, the effect of the hard portion 33 is sufficiently exhibited, and the effect of reducing noise due to wind noise can be increased.

[0057] In this embodiment, the glass run 10, excluding the hard portion 33 and the exterior hard portion 34, is made of an olefin-based thermoplastic elastomer (TPO) with an IRHD (International Rubber Hardness) of 80±5, and the hard portion 33 and the exterior hard portion 34 are made of TPO with an IRHD of 100±5 by extrusion molding.

[0058] In the embodiment of the present invention, the glass run 10 may be made of a material such as rubber, a thermoplastic elastomer, or a soft synthetic resin. In the case of rubber, EPDM (ethylene propylene diene rubber) is preferable, and in the case of thermoplastic elastomer, an olefin-based thermoplastic elastomer (TPO) or a dynamically crosslinked thermoplastic elastomer (TPV) is preferable from the viewpoints of weather resistance, recyclability, cost, etc. Furthermore, the hard portion 33 and the vehicle exterior hard portion 34 may be made of PP (polypropylene).

[0059] In addition to the claims, the present invention includes the following aspects.

[0060] In claim 4, 4. The glass run according to claim 3, wherein an exterior hard portion having a harderness than a material constituting the exterior side wall is formed on an exterior side of the exterior side wall, the exterior hard portion abutting against the door frame.

[0061] In claim 6, 6. The glass run according to claim 3, wherein a convex rib protruding toward the vehicle interior is formed on an interior side of the hard portion.

[0062] 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.

[0063] For example, the glass run 10 of the above embodiment can be applied to the first extrusion portion 11 or the second extrusion portion 12 in FIG. [Explanation of symbols]

[0064] 3 Door Frame 5 Door frame groove 10 Glass Run 20 Bottom Wall 30 Outside side wall 31 Interior side 32 Exterior side 33 Hard part 34 Hard part outside the vehicle 38 Car exterior cover lip 40 Car interior side wall 51 Tip

Claims

1. A glass run having a base wall, an exterior side wall, and an interior side wall as a basic framework, which is attached to a door frame and guides the raising and lowering of a door glass, The glass run is characterized in that a hard portion having a harderness than a material constituting the vehicle exterior side wall is formed in the vehicle exterior side wall from an interior side surface of the vehicle exterior side wall to an interior side.

2. 2. The glass run according to claim 1, wherein the hard portion is formed from a vicinity of a connecting portion between the bottom wall portion and the exterior side wall on the exterior side wall side over substantially the entire area on the interior side of the exterior side wall.

3. 3. The glass run according to claim 1, wherein the hard portion is formed to extend beyond a leading end of the door frame when the glass run is attached to the door frame.

4. 3. The glass run according to claim 1, wherein an exterior hard portion having a harderness than a material constituting the exterior side wall is formed on an exterior side of the exterior side wall, the exterior hard portion abutting against the door frame.

5. 5. The glass run according to claim 4, wherein the vehicle exterior hard portion is formed to extend beyond the tip end of the door frame when the glass run is attached to the door frame.

6. 3. The glass run according to claim 1, wherein a convex rib protruding toward the vehicle interior is formed on an interior side of the hard portion.

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