Glass run

Abstract

To provide a glass run capable of efficiently dissipating the vibration energy of a door glass.MEANS FOR SOLVING THE PROBLEM: A glass run 10 comprises a basic skeleton consisting of a bottom wall 20, an exterior side wall 30, and an interior side wall 40. The basic skeleton is attached to a door frame groove 5 formed in a door frame 3, and guides raising and lowering of a door glass 4. A hard portion 33 is formed on an interior side of the exterior side wall 30, in sliding contact with the door glass 4 and harder than the exterior side wall 30. The exterior side wall 30 and the door frame groove 5 abut on surfaces thereof, and an exterior groove 21 is formed on the door glass 4 side of the connecting portion between the bottom wall 20 and the exterior side wall 30, and an interior groove 22 is formed on the door glass 4 side of a connecting portion between the bottom wall 20 and the interior side wall 40 so that thickness of the interior groove 22 is greater than thickness of the exterior groove 21.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] For example, FIG. 7 discloses a technique for reducing vibrations by using impedance matching, which increases the rigidity of the glass run to bring the impedance of the glass run closer to the impedance of the glass (for example, Patent Document 1).

[0004] In Figure 7, the glass run 100 has a basic skeleton made up of a bottom wall 200, an exterior side wall 300, and an interior side wall 400, and the basic skeleton is attached to a door frame groove 500 formed in a door frame 310, and guides the raising and lowering of a door glass 600.On the interior side of the exterior side wall 300, a thick portion 330 is formed that protrudes toward the interior of the vehicle, slides against the door glass 600, and has a harderness than the exterior side wall main body portion 320 of the exterior side wall 300.

[0005] Furthermore, on the exterior side of the exterior side wall 300, near the connection with the bottom wall 200 and toward the tip of the exterior side wall 300, a first exterior retaining lip 340 and a second exterior retaining lip 350 that engage with the door frame groove 500 are formed opposite each other, and the first exterior retaining lip 340 and the second exterior retaining lip 350 hold the bent door frame groove 500. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2023-53894 Summary of the Invention [Problem to be solved by the invention]

[0007] Incidentally, by abutting the vehicle exterior side wall 300, which has the hardened thick portion 330 formed therein, against the door frame groove 500 and configuring it so that it is inserted between the door glass 600 and the door frame groove 500, the rigidity of the vehicle exterior side wall 300, including the thick portion 330, relative to the door glass 600 and the door frame groove 500 can be increased, and vibration can be further reduced by utilizing impedance matching.

[0008] However, in a vehicle such as an automobile, the door frame 310 and the door frame groove 500 formed therein are curved in the up-down and front-rear directions of the vehicle. When the glass run 100 formed in a substantially straight line is installed, the vehicle exterior side wall 300 has the thick portion 330 with high hardness, so the door frame groove 500 is less able to follow the curvature than the vehicle interior side wall 400, resulting in an area where the vehicle exterior surface of the vehicle exterior side wall 300 does not abut against the door frame groove 500.

[0009] Furthermore, since the curvature of the door frame 310 (door frame groove 500) does not match the curvature of the door glass 600, variations occur in the contact pressure of the vehicle exterior side wall 300, including the thick portion 330, on the door frame groove 500 when it comes into sliding contact with the door glass 600, and the effect of vibration reduction using impedance matching is not fully realized. [Means for solving the problem]

[0010] In order to solve the above problem, the present invention of claim 1 is a glass run that has a basic skeleton consisting of 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 the exterior side wall has a hard portion that is harder than the exterior side wall and is formed inside or exposed to the interior side of the vehicle, an exterior groove portion is formed on the door glass side of the connecting portion between the bottom wall and the exterior side wall, and an interior groove portion is formed on the door glass side of the connecting portion between the bottom wall and the interior side wall, and the thickness of the interior groove portion is formed thicker than the thickness of the exterior groove portion.

[0011] According to the present invention of claim 1, the exterior side wall has a hard portion formed therein or exposed to the interior side, the hard portion having a harder hardness than the exterior side wall. An exterior groove is formed on the door glass side of the connecting portion between the bottom wall and the exterior side wall. An interior groove is formed on the door glass side of the connecting portion between the bottom wall and the interior side wall. The interior groove is thicker than the exterior groove, making it difficult to bend the interior groove between the interior side wall and the bottom wall when attaching the glass run to the door frame. As a result, when the interior groove is bent, the thick interior groove generates a force that presses the bottom wall toward the exterior side wall, forcing the exterior side wall toward the door frame. This ensures that the exterior surface of the exterior side wall, particularly the exterior surface of the exterior side wall near the bottom wall, is securely abutted against the door frame. This allows the vibration reduction effect achieved by impedance matching to be fully achieved.

[0012] On the other hand, since the thickness of the outer groove portion is thinner than the inner groove portion, the inner groove portions of the outer side wall and the bottom wall can be easily bent without adversely affecting the attachment of the glass run to the door frame.

[0013] It should be noted that the thickness of the interior groove portion and the thickness of the exterior groove portion in claim 1 refer to the thinnest portions of the interior groove portion and the exterior groove portion before the glass run is installed, i.e., when the exterior side wall and the interior side wall are open relative to the bottom wall.

[0014] The present invention described in claim 2 is the invention of claim 1, in which the vehicle exterior side wall and the door frame abut on each other at a surface, and the door glass is a glass run that abuts on the vehicle exterior side wall in the area where the hard portion is formed.

[0015] In the present invention described in claim 2, the vehicle exterior side wall and the door frame abut on their surfaces, and the door glass abuts on the vehicle exterior side wall in the area where the hard portion is formed, thereby increasing the rigidity of the vehicle exterior side wall sandwiched between the door frame and the door glass, and enhancing the effect of vibration reduction using impedance matching.

[0016] Here, the "rigidity of the vehicle exterior side wall" is expressed as the increase in the reaction force from the vehicle exterior side wall relative to the amount of change in the pressed area when the vehicle exterior side wall is pressed by the door glass or door frame. Therefore, the "rigidity of the vehicle exterior side wall" refers to the increase in the slope (gradient) of the relationship between displacement and reaction force.

[0017] The present invention as set forth in claim 3 is a glass run according to claim 1, wherein the door frame includes a door frame groove portion, the basic skeleton is attached to the door frame groove portion, an exterior retaining lip is formed near the exterior side of the connecting portion with the bottom wall of the exterior side wall, extending toward the tip end of the exterior side wall, and a thinned portion is formed at the base portion of the exterior retaining lip on the exterior side wall.

[0018] The exterior side wall has an exterior retaining lip that extends toward the tip of the exterior side wall near the exterior of the connection with the bottom wall and elastically contacts the door frame groove, preventing the glass run from slipping out of the door frame groove after installation. However, when the thickness of the interior groove portion is made thicker than the exterior groove portion and it is attached to the door frame groove portion, the thick interior groove portion generates a force that pushes the bottom wall toward the exterior side wall of the vehicle, but on the other hand, the exterior retaining lip generates a force that pushes the above force back toward the interior of the vehicle.

[0019] According to a third aspect of the present invention, the door frame includes a door frame groove, a basic frame attached to the door frame groove, an exterior-side retaining lip extending toward the leading end of the exterior-side side wall near the exterior side of the connection between the exterior-side side wall and the bottom wall, and a thin-walled portion formed at the base of the exterior-side retaining lip. When attached to the door frame, the exterior-side retaining lip abuts against the door frame groove. This collapses the gap formed between the door frame groove, the thin-walled portion of the exterior-side side wall, and the exterior-side retaining lip, thereby suppressing the generation of a pushing force from the exterior-side retaining lip against the force exerted by the thick interior-side groove on the bottom wall toward the exterior-side side wall. As a result, the exterior surface of the bottom wall of the exterior-side side wall can be reliably abutted against the door frame groove, thereby fully achieving the vibration reduction effect achieved by impedance matching. The exterior-side retaining lip also prevents the glass run from slipping out of the door frame groove.

[0020] The present invention as set forth in claim 4 is the glass run as set forth in claim 3, wherein a step portion is formed in the direction of the tip portion of the vehicle exterior side wall, where the thickness of the vehicle exterior side wall is increased, and the vehicle exterior tip portion of the door frame groove does not abut against the step portion, and a tip-side gap portion is formed between the vehicle exterior tip portion and the step portion.

[0021] When a door frame groove that is formed by bending is held by being sandwiched between two opposing exterior retaining lips, for example, if the length between the opposing exterior retaining lips is shorter than the length of the door frame groove that is being sandwiched due to dimensional tolerances, a force may be generated in a direction that moves the exterior side wall away from the door frame groove.

[0022] According to the present invention of claim 4, a step portion where the thickness of the exterior side wall is increased toward the leading end of the vehicle exterior side wall is formed, and the exterior leading end of the door frame groove does not abut against the step portion, and a leading-end gap is formed between the exterior leading end and the step portion. This eliminates a source of force that moves the exterior side wall away from the door frame groove. As a result, the exterior surface of the bottom wall of the exterior side wall can be reliably abutted against the door frame groove, thereby fully achieving the vibration reduction effect achieved by impedance matching. Furthermore, because the exterior side wall abuts against the door frame groove, there is no need to form an exterior retaining lip near the leading end of the exterior side wall, and the weight of the glass run can be reduced.

[0023] The present invention as set forth in claim 5 is the glass run of claim 1, wherein an exterior retaining lip is formed near the exterior side of a joint portion of the exterior side wall with the bottom wall, extending toward a tip end of the exterior side wall; an exterior seal lip is formed on the exterior side of the exterior side wall toward the interior side and toward the bottom wall, on the interior side of the vehicle toward the tip end of the exterior retaining lip; the exterior side wall has a hard portion having a harder hardness than the exterior side wall, formed on the exterior side wall and exposed inside the exterior side wall or on the interior side of the exterior side wall; and the exterior seal lip is a glass run that abuts against the door glass at least when the door glass is closed, and abuts against the exterior side wall when the hard portion is formed inside the exterior side wall, and abuts against the hard portion when the hard portion is formed and exposed on the interior side of the exterior side wall.

[0024] According to a fifth aspect of the present invention, an exterior-side retaining lip is formed near the exterior side of a joint between the exterior-side side wall and the bottom wall, the exterior-side seal lip is formed on the interior side of the exterior side wall toward the interior end of the bottom wall, the exterior-side seal lip is formed on the interior side of the vehicle toward the interior end of the exterior retaining lip, the exterior-side side wall has a hard portion having a harder hardness than the exterior-side side wall formed on the interior side of the exterior-side side wall or exposed on the interior side of the exterior-side side wall, the exterior-side seal lip abuts against the door glass at least when the door glass is closed, the exterior-side seal lip abuts against the door glass when the hard portion is formed on the interior side of the exterior-side side wall and the exterior-side seal lip abuts against the door glass when the hard portion is exposed on the interior side of the exterior-side side wall, and the exterior-side seal lip abuts against the door glass when the hard portion is formed on the exterior side wall and the exterior-side seal lip abuts against the door glass, thereby improving the rigidity of the exterior side of the glass run. As a result, the vibration reduction effect using impedance matching can be fully exerted.

[0025] The present invention described in claim 6 is the glass run of the invention described in claim 5, wherein the bottom wall is formed with a door frame side abutment surface that abuts against the door frame when attached to the door frame.

[0026] In the present invention described in claim 6, the bottom wall is formed with a door frame side abutment surface that abuts against the door frame when attached to the door frame, so that the glass run can be firmly fixed to the door frame.

[0027] The present invention as set forth in claim 7 is the invention as set forth in claim 2 or claim 5, wherein the hard portion is formed separately on the inside and outside of the vehicle exterior side wall, and the outside hard portion formed on the vehicle exterior side is a glass run that is exposed to the outside of the vehicle exterior side wall or that is formed penetrating from the inside to the outside of the vehicle.

[0028] In the present invention of claim 7, the hard portion is formed separately on the inside and outside of the vehicle exterior side wall, and the outside hard portion formed on the vehicle exterior is exposed to the outside of the vehicle exterior side wall or is formed to penetrate from the inside to the outside of the vehicle, so that the rigidity of the vehicle exterior side wall with respect to the door glass and door frame is further increased, vibration energy is attenuated more efficiently, and noise due to wind noise can be further reduced. As a result, the effect of vibration reduction using impedance matching can be fully exerted. [Effects of the Invention]

[0029] 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, the exterior side wall having a hard portion formed therein or exposed on the interior side thereof, the hard portion having a harder hardness than the exterior side wall, an exterior groove formed on the door glass side of a joint between the bottom wall and the exterior side wall, and an interior groove formed on the door glass side of a joint between the bottom wall and the interior side wall, the interior groove being thicker than the exterior groove, so that the exterior side wall is pressed toward the door frame, and the exterior surface of the exterior side wall, particularly the exterior surface of the exterior side wall on the bottom wall side, can be reliably abutted against the door frame, thereby enabling the vibration reduction effect achieved by impedance matching to be fully achieved.

[0030] On the other hand, since the thickness of the outer groove portion is thinner than the inner groove portion, the inner groove portions of the outer side wall and the bottom wall can be easily bent without adversely affecting the attachment of the glass run to the door frame. [Brief explanation of the drawings]

[0031] [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] 3 is a cross-sectional view taken along line BB in FIG. 2 showing the glass run according to the first embodiment of the present invention. FIG. [Figure 4]FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 according to the first embodiment of the present invention. [Figure 5] FIG. 3 is a cross-sectional view taken along line DD in FIG. 2 showing a glass run according to a second embodiment of the present invention. [Figure 6] FIG. 2 is a cross-sectional view taken along line CC in FIG. 1 in a second embodiment of the present invention. [Figure 7] FIG. 1 is a cross-sectional view showing a conventional glass run mounting structure (Patent Document 1). DETAILED DESCRIPTION OF THE INVENTION

[0032] A first embodiment of the present invention will be described with reference to FIGS. 1 to 4. 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 the 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 to a door frame groove 5 formed in the door frame 3 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 with raising and lowering door glass. FIGS. 1 and 2 are also used in a second embodiment of the present invention, which will be described later.

[0033] 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.

[0034] 3 is a cross-sectional view taken along the line B-B in FIG. 2, showing the third extrusion 13 corresponding to the rear vertical frame portion of the door frame 3 before it is attached to the door frame groove 5 of the door frame 3. The glass run 10 has a basic framework including a bottom wall 20, an exterior side wall 30, and an interior side wall 40. The interior side wall 40 is larger than the exterior side wall 30, and the glass run 10 has an asymmetrical shape with the interior side being larger.

[0035] An exterior groove 21 is formed at the connecting portion between the bottom wall 20 and the exterior side wall 30, and an interior groove 22 is formed at the connecting portion between the bottom wall 20 and the interior side wall 40, and the exterior groove 21 and the interior groove 22 are deployably connected together. The interior groove 22 is formed to be thicker than the exterior groove 21. To increase the thickness of the interior groove 22, a protrusion 25 is formed on the opposite side of the bottom wall 20, protruding from the interior groove 22. Note that if the thickness of the interior groove 22 is ensured, the protrusion 25 need not be formed.

[0036] The bottom wall 20 is formed in a substantially plate-like shape, and a plurality of bottom wall recesses 23 are formed continuously and parallel to each other in the longitudinal direction on the inner surface (door glass 4 side) of the bottom wall 20. In addition, a bottom wall seal lip 24 is formed on the outer surface of the bottom wall 20.

[0037] An exterior holding lip 31 is formed on the exterior side of the exterior side wall 30 near the joint with the bottom wall 20, extending toward the tip of the exterior side wall 30. A thinned portion 32 is formed at the base of the exterior holding lip 31 on the exterior side wall 30.

[0038] A hard portion 33 having a higher hardness than the material constituting the exterior side wall 30 is formed on the interior side of the vehicle. The hard portion 33 is divided into an interior hard portion 33a formed on the interior side of the exterior side wall 30 and an exterior hard portion 33b formed on the exterior side. The interior hard portion 33a is formed to protrude from the exterior side wall 30 toward the interior side of the vehicle. On the other hand, the exterior hard portion 33b formed on the exterior side is formed inside the exterior side wall 30 and exposed on the exterior side of the exterior side wall 30. The exterior hard portion 33b is formed in a position opposite the interior hard portion 33a. A plurality of convex ribs 33c are formed continuously in parallel in the longitudinal direction on the interior surface of the interior hard portion 33a.

[0039] Moreover, the vehicle exterior hard portion 33b is not formed in the thin portion 32. The vehicle exterior hard portion 33b is formed toward the tip portion 34 of the vehicle exterior side wall 30 from the thin portion 32.

[0040] In this embodiment, the value X obtained by dividing the thickness of the hard portion 33 excluding the rib 33c (the sum of the thicknesses of the interior hard portion 33a and the exterior hard portion 33b) by the sum of the thickness of the hard portion 33 excluding the rib 33c and the thickness of the exterior side wall 30 is 0.6. The value of X is preferably 0.4 or more.

[0041] In the vehicle-exterior side wall 30, a step portion 35 where the thickness increases is formed from the vehicle-exterior hard portion 33b toward the tip portion 34.

[0042] An exterior seal lip 36 is formed from the tip 34 of the exterior side wall 30 toward the interior of the vehicle and toward the bottom wall 20. A retaining rib 37 is formed on the exterior side of the tip 34 of the exterior side wall 30. An exterior cover lip 38 is formed on the exterior side of the vehicle from the base of the exterior seal lip 36 on the exterior side wall 30 toward the tip, toward the interior of the vehicle and in the opposite direction from the bottom wall 20.

[0043] A first interior seal lip 41 is formed on the exterior side of the interior side wall 40, extending from a tip portion of the interior side wall 40 toward the exterior side of the vehicle, toward the bottom wall 20. A second interior seal lip 42 is formed between the first interior seal lip 41 and the bottom wall 20 and extending toward the bottom wall 20. A sub-lip 43 is formed on the exterior surface of the interior side wall 40, closer to the bottom wall 20 than the second interior seal lip 42, and extending toward the exterior side of the vehicle, in the opposite direction from the bottom wall 20. The sub-lip 43 may be formed to extend toward the bottom wall 20. Furthermore, the sub-lip 43 does not have to be formed.

[0044] Furthermore, a second interior retaining lip 45 is formed on the interior side of the interior side wall 40 near the joint with the bottom wall 20, extending toward the tip end of the interior side wall 40, and a first interior retaining lip 44 is formed between the second interior retaining lip 45 and the tip end of the interior side wall 40, extending toward the tip end of the interior side wall 40. Furthermore, an abutment rib 46 is formed between the first interior retaining lip 44 and the second interior retaining lip 45.

[0045] An interior cover lip 47 is formed from the tip end portion of the interior side wall 40 toward the interior side of the vehicle, on the bottom wall 20 side.

[0046] In this embodiment, the hard portion 33 is made of PP (polypropylene), and the glass run 10 excluding the hard portion 33 is made of an olefin-based thermoplastic elastomer (TPO) with an IRHD (International Rubber Hardness Scale) of 80±5, and is fabricated by extrusion molding. The hard portion 33 may be made of the same TPO as the other portions, in which case the IRHD is preferably 100±5. Furthermore, hard resin materials other than PP, such as olefin-based resins such as polystyrene, may also be used.

[0047] Fig. 4 is a cross-sectional view taken along the line AA in Fig. 1. That is, it is a cross-sectional view when the glass run 10 in Fig. 3 is attached to the door frame groove 5 of the door frame 3 and the door glass 4 is closed. In Fig. 4, a center pillar 6 is attached to the vehicle outer side of the door frame groove 5. The door frame groove 5 is made of metal.

[0048] When the glass run 10 is attached to the door frame groove 5 of the door frame 3, the bottom wall seal lip 24 of the bottom wall 20 elastically contacts the door frame groove 5, and the protrusion 25 abuts against it.

[0049] In the exterior side wall 30, the exterior holding lip 31 abuts against the hemmed tip 51 of the hemmed door frame groove 5, and the exterior hard portion 33b abuts against the interior side of the hemmed door frame groove 5. A gap 60 is formed between the exterior side wall 30, the thin-walled portion 32, and the exterior holding lip 31 on the bottom wall 20 side of the exterior hard portion 33b.

[0050] Furthermore, the step portion 35 does not abut the bent portion of the hemming, i.e., the outer end portion 52 of the door frame groove 5, and a tip-side gap 39 is formed between the step portion 35 and the outer end portion 52 of the door frame groove 5. Furthermore, the tip portion of the center pillar 6 abuts against the retaining rib 37.

[0051] On the vehicle exterior side, the vehicle interior side wall 40 and the abutment rib 46 abut against the door frame groove 5, and the first vehicle interior support lip 44 and the second vehicle interior support lip 45 abut against the first curved portion 53 and the second curved portion 54 of the door frame groove 5. In addition, the vehicle interior cover lip 47 is in elastic contact with the door frame 3.

[0052] In Figure 4, the exterior groove portion 21 is deformed so that the interior side of the exterior side wall 30 is very close to the bottom wall 20, while the interior groove portion 22 is deformed so that the exterior side of the interior side wall 40 and the bottom wall 20 are not as close as they are to the exterior side, and is attached to the door frame groove portion 5.

[0053] When the door glass 4 is inserted between the exterior side wall 30 and the interior side wall 40, the exterior cover lip 38 deforms toward the opposite side from the bottom wall 20, and the exterior seal lip 36 deforms toward the bottom wall 20, elastically contacting the exterior side of the door glass 4. In addition, the exterior side of the door glass 4 abuts against a rib 33c formed on the interior hard portion 33a of the hard portion 33.

[0054] On the other hand, on the inside of the vehicle, both the first interior seal lip 41 and the second interior seal lip 42 are deformed toward the bottom wall 20 and come into elastic contact with the interior side of the door glass 4 .

[0055] Next, a second embodiment of the present invention will be described with reference to Figures 1, 2, 5, and 6. Figure 5 is a cross-sectional view taken along line DD in Figure 2, showing the first extrusion 11 corresponding to the horizontal frame portion of the door frame 3 before it is attached to the door frame 3. Figure 6 is a cross-sectional view taken along line CC in Figure 1, showing the glass run 10 in Figure 5 attached to the door frame 3 with the door glass 4 closed.

[0056] The second embodiment differs from the first embodiment in the following points in addition to the difference in the attachment locations. The door frame 3 does not have a door frame groove portion 5, and the door frame 3 has an outer frame 3a, an inner frame 3b, and an upper frame 3c.

[0057] The glass run 10 has a bottom wall 20 that does not have a bottom wall seal lip 24, a door glass side seal lip 26 on the door glass 4 side, and a door frame side abutment surface 27 that is a flat portion on the side opposite to the door glass 4 side.

[0058] Further, the exterior side wall 30 has the following features: no rib 33c is formed on the hard portion 33, the area that abuts against the outer frame 3a bulges outward toward the exterior of the vehicle, the exterior seal lip 36 can abut against the interior hard portion 33a, and the exterior cover lip 38 extends outward and toward the bottom wall 20. Furthermore, the exterior seal lip 36 has a thinner wall near the connection with the exterior side wall 30 than the tip portion. The region of the exterior side wall 30 that abuts against the outer frame 3a bulges outward to the exterior of the vehicle in order to increase the strength of connection with the outer frame 3a. The outer seal lip 36 is formed thinner near the connection with the outer side wall 30 than the tip portion in order to make it easier for the outer seal lip 36 to deform toward the outer side wall 30 when it comes into contact with the door glass 4.

[0059] Further, with regard to the interior side wall 40, the sub-lip 43 is not formed, the second interior retaining lip 45 and the abutment rib 46 are not formed, and the area where the first interior retaining lip 44 is formed is formed thickly on the interior side of the vehicle. The area where the first interior retaining lip 44 is formed is made thicker on the interior side of the vehicle because the interior side wall 40 is longer than the exterior side wall 30, and this is to prevent deflection when the lip is attached to the door frame 3 and comes into contact with the door glass 4.

[0060] When the glass run 10 is attached to the door frame 3, on the vehicle exterior side, the outer frame 3a is inserted between the vehicle exterior cover lip 38 and the vehicle exterior side wall 30, and the vehicle exterior holding lip 31 elastically contacts the outer frame 3a. In addition, the vehicle exterior hard portion 33b and the outer frame 3a come into surface contact with each other.

[0061] On the other hand, on the inside of the vehicle, the inner frame 3b is inserted between the interior cover lip 47 and the interior side wall 40, and the first interior holding lip 44 elastically contacts the inner frame 3b.

[0062] Furthermore, the door frame side contact surface 27 of the bottom wall 20 comes into surface contact with the upper frame 3c.

[0063] When the door glass 4 is inserted between the exterior side wall 30 and the interior side wall 40, on the exterior side of the vehicle, the exterior seal lip 36 abuts against the exterior side of the door glass 4 and deforms toward the exterior side wall 30. On the interior side of the vehicle, the first interior seal lip 41 and the second interior seal lip 42 abut against the interior side of the door glass 4 and deform toward the interior side wall 40.

[0064] As shown in FIG. 6, when the door glass 4 is closed, the door glass-side seal lip 26 on the bottom wall 20 side falls toward the bottom wall 20 and abuts against the bottom wall 20 and the door glass 4.

[0065] On the vehicle exterior side wall 30 side, the vehicle exterior seal lip 36 abuts against the vehicle exterior hard portion 33b, is sandwiched between the door glass 4 and the vehicle exterior side wall 30, and is pressed toward the vehicle exterior.

[0066] As described above in detail, according to this embodiment, the following effects can be obtained. (1) In the first embodiment, the thickness of the interior groove 22 is greater than the thickness of the exterior groove 21. This makes it difficult to bend the interior groove 22 between the interior side wall 40 and the bottom wall 20 when the glass run 10 is attached so as to conform to the shape of the door frame groove 5 formed in the door frame 3. As a result, when the interior groove 22 is bent, the thick interior groove 22 generates a force that presses the bottom wall 20 toward the exterior side wall 30. This presses the exterior side wall 30 toward the door frame groove 5, ensuring that the exterior surface of the exterior side wall 30, particularly the exterior surface of the exterior side wall 30 on the bottom wall 20 side, is reliably abutted against the door frame groove 5. As a result, the vibration reduction effect achieved by impedance matching can be fully achieved.

[0067] On the other hand, since the thickness of the exterior groove portion 21 is thinner than the thickness of the interior groove portion 22, the exterior groove portion 21 of the exterior side wall 30 and the bottom wall 20 can be easily bent and can easily follow the shape of the door frame groove 5. As a result, there is no adverse effect on the attachment of the glass run 10 to the door frame groove 5.

[0068] (2) An exterior-side retaining lip 31 is formed near the exterior side of the connection portion between the exterior-side side wall 30 and the bottom wall 20, extending toward the leading end 34 of the exterior-side side wall 30. A thinned portion 32 is formed at the base of the exterior-side retaining lip 31 on the exterior-side side wall 30. This allows the gap 60 formed between the door frame groove 5, the thinned portion 32 of the exterior-side side wall 30, and the exterior-side retaining lip 31 to collapse, thereby suppressing the generation of a force pushing the bottom wall 20 toward the exterior-side side wall 30 by the thick interior-side groove 22. As a result, the exterior surface of the exterior-side side wall 30 on the bottom wall 20 side can be reliably abutted against the door frame groove 5, thereby fully demonstrating the vibration reduction effect achieved by impedance matching. Furthermore, the exterior-side retaining lip 31 prevents the glass run 10 from slipping out of the door frame groove 5.

[0069] (3) A step 35 where the thickness of the exterior-side wall 30 increases is formed toward the tip 34 of the exterior-side wall 30, and the exterior-side tip 52 of the door frame groove 5 does not abut against the step 35 of the exterior-side wall 30. A tip-side gap 39 is formed between the exterior-side tip 52 of the door frame groove 5 and the step 35 of the exterior-side wall 30. This eliminates a source of force that would move the exterior-side wall 30 away from the door frame groove 5 due to sandwiching between two opposing exterior-side retaining lips. As a result, the exterior surface of the exterior-side wall 30 can be reliably abutted against the door frame groove 5, thereby fully demonstrating the vibration reduction effect achieved by using impedance matching. Furthermore, because the exterior-side wall 30 abuts against the door frame groove 5, there is no need to form an exterior-side retaining lip on the tip 34 side of the exterior-side wall 30, and the weight of the glass run 10 can be reduced.

[0070] (4) On the interior surface of the interior hard portion 33a, a plurality of convex ribs 33c are formed continuously and parallel in the longitudinal direction, so that dust, dirt, foreign matter, etc. can be prevented from getting caught in the interior hard portion 33a when the door glass 4 is raised or lowered, thereby preventing the generation of abnormal noise.

[0071] (5) In the second embodiment, an exterior retaining lip 31 is formed near the exterior side of the joint between the exterior side wall 30 and the bottom wall 20, extending toward the tip 34 of the exterior side wall 30. The exterior side wall 30 has an exterior seal lip 36 formed on the interior side of the tip 34, extending toward the interior side and toward the bottom wall 20. The exterior side wall 30 has a hard portion 33 having a harder hardness than the exterior side wall 30, which is separated into the exterior and interior sides, with the exterior hard portion 33b exposed on the interior side. When the door glass 4 is closed, the exterior seal lip 36 comes into surface contact with the door glass 4 and also into surface contact with the exterior hard portion 33b, thereby improving the rigidity of the exterior side of the glass run 10. This allows the vibration reduction effect achieved by impedance matching to be fully achieved.

[0072] (6) Furthermore, the bottom wall 20 is formed with a door frame side abutment surface 27 that abuts against the upper frame 3c when attached to the door frame 3, so that the glass run 10 can be firmly fixed to the upper frame 3c.

[0073] (7) In the first and second embodiments, the hard portion 33 is divided into an interior hard portion 33a formed on the interior side of the exterior side wall 30 and an exterior hard portion 33b formed on the exterior side. The exterior hard portion 33b is formed opposite the interior hard portion 33a, and the exterior hard portion 33b is formed so as to be exposed on the exterior side of the exterior side wall 30. The exterior hard portion 33b abuts on the door frame groove 5 in the first embodiment and on the outer frame 3a in the second embodiment. This further increases the rigidity of the exterior side wall 30 relative to the door glass 4 and the door frame 3, thereby more efficiently attenuating vibration energy and further reducing noise due to wind noise. As a result, the vibration reduction effect using impedance matching can be fully exerted.

[0074] 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.

[0075] For example, in the above embodiment, the hard portion 33 is divided into an interior hard portion 33a formed on the interior side of the exterior side wall 30 and an exterior hard portion 33b formed on the exterior side of the vehicle, but it is also possible to form only the interior hard portion 33a without dividing it.

[0076] For example, in the above-described first embodiment, the exterior hard portion 33b is formed inside the exterior side wall 30 and exposed to the exterior side of the exterior side wall 30, but it may also be formed to protrude from the exterior side wall 30, similar to the interior hard portion 33a.

[0077] For example, the first embodiment has the advantages described above. (1) The thickness of the inner groove portion 22 is formed to be thicker than the thickness of the outer groove portion 21. (2) An exterior holding lip 31 is formed near the exterior of the vehicle at the connection portion between the exterior side wall 30 and the bottom wall 20, and a thin-walled portion 32 is formed at the base portion of the exterior holding lip 31. (3) A step portion 35 where the thickness of the vehicle exterior side wall 30 is increased is formed toward the tip portion 34 of the vehicle exterior side wall 30, and the vehicle exterior tip portion 52 of the door frame groove portion 5 and the step portion 35 of the vehicle exterior side wall 30 do not abut, and a tip side gap portion 39 is formed between the vehicle exterior tip portion 52 of the door frame groove portion 5 and the step portion 35 of the vehicle exterior side wall 30, (4) The hard portion 33 is divided into an interior hard portion 33a formed on the interior side of the exterior side wall 30 and an exterior hard portion 33b formed on the exterior side of the vehicle. However, in order to form a hard portion 33 with high hardness on the vehicle exterior side wall 30 while improving the ability to follow the curved door frame 3 (including the door frame groove portion 5) and to fully demonstrate the effect of vibration reduction using impedance matching, the above (1) is essential, and the others (2) to (4) can be applied selectively. [Explanation of symbols]

[0078] 3 Door Frame 5 Door frame groove 10 Glass Run 20 Bottom Wall 21 Vehicle exterior groove 22 Vehicle interior groove 27 Door frame contact surface 30 Outside side wall 31 Exterior retaining lip 32 Thin-walled section 33 Hard part 33a Hard part inside the car 33b Outside hard part 33c Rib 35 Step 36 Outer seal lip 38 Car exterior cover lip 39 Tip side cavity 40 Inner side wall 47 Car interior cover lip 60 Void

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, and the glass run guides the raising and lowering of a door glass, a hard portion having a hardness higher than that of the vehicle exterior side wall is formed inside the vehicle exterior side wall or exposed to the vehicle interior side; an exterior groove portion is formed on the door glass side of a connecting portion between the bottom wall and the exterior side wall; an interior groove portion is formed on the door glass side of a connecting portion between the bottom wall and the interior side wall; The glass run is characterized in that the thickness of the inner groove portion is formed to be thicker than the thickness of the outer groove portion.

2. The vehicle exterior side wall and the door frame abut on each other by their surfaces, The glass run according to claim 1 , wherein the door glass abuts against the vehicle exterior side wall in a region where the hard portion is formed.

3. The door frame includes a door frame groove portion, and the basic framework is attached to the door frame groove portion. an exterior holding lip is formed in the vicinity of the exterior side of a connection portion of the exterior side wall with the bottom wall, the exterior holding lip extending toward a tip end of the exterior side wall; 2. The glass run according to claim 1, wherein a thinned portion is formed at a base portion of the exterior holding lip of the exterior side wall.

4. a step portion where the thickness of the vehicle exterior side wall is increased is formed in a direction toward a tip end of the vehicle exterior side wall, 4. The glass run according to claim 3, wherein the outer-vehicle-side tip of the door frame groove does not abut on the step portion, and a tip-side gap is formed between the outer-vehicle-side tip portion and the step portion.

5. an exterior seal lip is formed on the interior side of the exterior side wall, the exterior seal lip extending toward the interior side and the bottom wall; The outer seal lip is configured to: The door glass is in surface contact with the door glass, 2. The glass run according to claim 1, wherein the hard portion abuts against the vehicle exterior side wall when formed inside the vehicle exterior side wall, and abuts against the vehicle exterior side wall when formed exposed on the vehicle interior side of the vehicle exterior side wall.

6. 6. The glass run according to claim 5, wherein the bottom wall is formed with a door frame side abutment surface that abuts on the door frame when the glass run is attached to the door frame.

7. 6. The glass run according to claim 2, wherein the hard portion is formed separately on an inner side and an outer side of the outer side wall, and the outer side hard portion formed on the outer side is exposed to the outer side of the outer side wall or is formed so as to penetrate from the inner side to the outer side.

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