Glass run

Abstract

This invention provides a glass run that can efficiently channel and dissipate the vibrational energy of the door glass. [Means for solving the problem] The basic frame consists of a bottom wall 20, an outer side wall 30, and an inner side wall 40, and the basic frame is attached to the door frame 3 to form a glass run 10 that guides the raising and lowering of the door glass 4. The outer side wall 40 is equipped with an outer seal lip 36 that extends inward and toward the bottom wall 20, and the outer seal lip 36 is equipped with a side wall portion 50 connected to the outer side wall 30, and a hard seal lip portion 51 connected to the side wall portion 50 and having a higher hardness than the side wall portion 50, and the hard seal lip portion 51 abuts against the door glass 4.

Description

Technical Field

[0005] ,

[0004] , , ,

[0006]

[0001] The present invention relates to a glass run attached to a door frame formed on a door of a vehicle such as an automobile.

Background Art

[0002] Improving the quietness of vehicles such as automobiles enhances the comfort of passengers, so the appeal for improving product power is high. Also, in electric vehicles that are becoming widespread, since the conventionally installed engine is eliminated, the main remaining noises due to the elimination of the engine noise are the road noise and the wind noise becoming prominent. Therefore, the need for technologies to reduce them is increasing.

[0003] For example, there is known a technique for reducing vibration by using impedance matching to bring the impedance of a glass run closer to the impedance of glass by increasing the rigidity of the glass run (for example, Patent Document 1).

[0004] FIG. 8 shows the technique disclosed in Patent Document 1, which has a bottom wall 200, an outer vehicle side wall 300, and an inner vehicle side wall 400 as basic skeletons, and the basic skeletons are attached to a door frame groove portion 500 formed in a door frame 310, and is a glass run 100 that guides the raising and lowering of a door glass 600. On the inner vehicle side of the outer vehicle side wall 300, there is formed a thick portion 330 that protrudes inward of the vehicle and slidably contacts the door glass 600 and has a higher hardness than the outer vehicle side wall main body portion 320 of the outer vehicle side wall 300. <e000017> Then, when the thick portion 330 having a high hardness contacts the door glass 600, it is possible to efficiently propagate the vibration energy of the door glass 600 to the glass run 100 by using impedance matching and reduce the vibration. <00A0019>

[0006] Furthermore, by forming a structure in which the outer side wall 300, which has a high-hardness, thick portion 330, abuts against the door frame groove portion 500, and sandwiches the door glass 600 between the door glass 600 and the door frame groove portion 500, it is possible to increase the rigidity of the outer side wall 300, including the thick portion 330, with respect to the door glass 600 and the door frame groove portion 500, thereby reducing vibration. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2023-53894 [Overview of the project] [Problems that the invention aims to solve]

[0008] Incidentally, in automobiles and other vehicles, the door frame 310 (the door frame groove 500 formed inside the door frame 310) is curved in the vertical and longitudinal directions of the vehicle. Also, the door glass 600 is curved in the vertical and longitudinal directions of the vehicle. Furthermore, the degree of curvature of the door frame 310 (door frame groove 500) and the degree of curvature of the door glass 600 are different.

[0009] The glass run, which is formed into an almost straight shape, conforms to the door frame due to the softness of its material. However, in the glass run 100, where a hard, thick section 330 is formed, variations in the curvature of the door glass 600 and the door frame 310 (door frame groove section 500) cause a gap to form between the thick section 330 and the door glass 600, particularly in the region from just before the door glass 600 is closed to the position where it is completely closed, near the upper corner of the door glass 600.

[0010] In the region where this gap occurs, the vibration energy of the door glass 600 cannot be transmitted to the thicker portion 330 (outer side wall 300) which has higher hardness. Therefore, the effect of vibration reduction using impedance matching is reduced compared to when the thicker portion 330 is in contact with the door glass 600 over its entire surface. [Means for solving the problem]

[0011] This invention provides a glass run that accommodates variations in the curvature of door glass and door frames, prevents the occurrence of non-contact areas between the door glass and the hard part, and fully demonstrates the vibration reduction effect using impedance matching.

[0012] To solve the above problems, the first aspect of the present invention is a glass run that guides the raising and lowering of a door glass, with a bottom wall, an outer side wall and an inner side wall as the basic frame, the basic frame being attached to a door frame, the outer side wall having an outer seal lip extending from the outer side wall inward and toward the bottom wall, the outer seal lip having a side wall portion connected to the outer side wall and a hard seal lip portion connected to the side wall portion and having a higher hardness than the side wall portion, the hard seal lip portion being in contact with the door glass.

[0013] In the first aspect of the present invention, the outer side wall of the vehicle is provided with an outer seal lip extending from the outer side wall toward the interior and bottom wall, the outer seal lip comprising a side wall portion connected to the outer side wall, and a hard seal lip portion connected to the side wall portion and having a higher hardness than the side wall portion, the hard seal lip portion abuts against the door glass, so that even in the region where a gap occurs between the thick portion and the door glass in the background art, i.e., the region where the door glass is located toward the interior, the deformation of the side wall portion allows the hard seal lip portion to maintain contact with the door glass.

[0014] As a result, variations in the curvature of the door glass and door frame are accommodated, preventing the occurrence of non-contact areas between the door glass and the hard seal lip, and allowing vibration energy from the door glass to be transmitted to the hard seal lip through impedance matching. Furthermore, the energy can be dissipated along the route from the hard seal lip to the side wall and then to the outer side wall of the vehicle. Consequently, the vibration reduction effect using impedance matching can be fully realized throughout the entire area of ​​the glass run that contacts the door glass.

[0015] Furthermore, since the side wall portion, which has a lower hardness than the hard portion of the seal lip, deforms and causes the hard portion of the seal lip to come into contact with the door glass, the ability to follow the position of the door glass is improved compared to when the entire exterior seal lip is formed from the hard portion of the seal lip, and the pressing force from the hard portion of the seal lip to the door glass can be reduced. As a result, adverse effects on the sliding between the door glass and the hard portion of the seal lip can be prevented.

[0016] Furthermore, since the hard part of the seal lip and the door glass are in contact, it is possible to suppress the intrusion of outside noise into the vehicle and the leakage of inside noise to the outside.

[0017] Furthermore, even when the door glass is slightly lowered, the contact between the hard part of the seal lip and the door glass is maintained. For example, when driving on rough roads, the exterior seal lip follows the vibration of the door glass, preventing the generation of rattling noises.

[0018] A second aspect of the present invention is that, in the first aspect, the hardened seal lip portion is a glass run that abuts against the outer side wall of the vehicle.

[0019] In the second aspect of the present invention, since the hardened seal lip abuts against the outer side wall of the vehicle, the vibration energy of the door glass, the vibration energy transmitted from the door glass to the hardened seal lip, can be efficiently dissipated to the glass run via the route from the hardened seal lip to the outer side wall of the vehicle.

[0020] A third aspect of the present invention is that, in the second aspect, the outer side wall of the vehicle is provided with an outer hard portion having a higher hardness than the outer side wall, and the seal lip hard portion is a glass run that abuts against the outer side wall of the region in which the outer hard portion is formed when the outer hard portion is formed inside the outer side wall, and abuts against the outer hard portion when the outer hard portion is formed exposed on the inner side of the outer side wall.

[0021] In a third aspect of the present invention, the outer side wall of the vehicle is provided with an outer hardened portion that is harder than the outer side wall, and when the outer hardened portion is formed inside the outer side wall, the seal lip hardened portion abuts against the outer side wall in the region where the outer hardened portion is formed inside, and when the outer hardened portion is formed exposed on the inner side of the outer side wall, it abuts against the outer hardened portion. As a result, the seal lip hardened portion abuts against the outer side wall in the region where the outer hardened portion is formed and the rigidity is increased, thereby allowing the vibration energy of the door glass to be transmitted to the glass run more efficiently via the route of the door glass, the seal lip hardened portion, and the outer side wall (or outer hardened portion), and dissipated.

[0022] Here, "stiffness of the outer side wall" is expressed as the increase in the reaction force from the outer side wall in response to the change in the pressure point when the outer side wall is pressed against by the door glass or the hard part of the seal lip. Therefore, "stiffness of the outer side wall" means that the slope (gradient) of the relationship between displacement and reaction force becomes larger.

[0023] A fourth aspect of the present invention is a glass run, in which, in the first to third aspects, the side wall portion of the exterior seal lip has a thin-walled folding base portion near the connection portion with the hard portion of the seal lip.

[0024] In a fourth aspect of the present invention, a thin folding base portion is formed on the side wall portion of the interior seal lip near the connection portion with the hard portion of the seal lip. Therefore, when the hard portion of the seal lip comes into contact with the door glass, the thin folding base portion makes it easier to follow the position of the door glass while maintaining contact between the hard portion of the seal lip and the door glass.

[0025] Further, when the rigid portion of the seal lip contacts the outer side wall of the vehicle, the region including the bending base point portion on the side wall side portion is bent and deformed, so that the rigid portion of the seal lip can reduce the pressing force on the inner side of the vehicle of the door glass. As a result, it is possible to prevent an adverse effect on the sliding of the door glass and the rigid portion of the seal lip.

[0026] In a fifth aspect of the present invention, in the fourth aspect, the bending base point portion is a glass run formed on the outer side of the side wall side portion of the vehicle.

[0027] In the fifth aspect of the present invention, since the bending base point portion is formed on the inner side of the side wall side portion of the vehicle, the side wall side portion is easily deformed outward by the bending base point portion. As a result, the rigid portion of the seal lip can reduce the pressing force on the inner side of the vehicle of the door glass, so that an adverse effect on the sliding of the door glass and the rigid portion of the seal lip can be prevented.

Effect of the Invention

[0028] A glass run that uses a bottom wall, an outer side wall of the vehicle, and an inner side wall of the vehicle as basic skeletons, the basic skeletons are attached to a door frame, and guides the raising and lowering of a door glass. The outer side wall of the vehicle includes an outer side seal lip extending from the outer side wall of the vehicle to the inner side and the bottom wall side. The outer side seal lip includes a side wall side portion connected to the outer side wall of the vehicle, and a seal lip rigid portion connected to the side wall side portion and having a higher hardness than the side wall side portion. The seal lip rigid portion can maintain a state of contacting the door glass due to the deformation of the side wall side portion even in a region where a gap occurs between the thick portion and the door glass in the background art where the seal lip rigid portion contacts the door glass, that is, in a region where the door glass is located on the inner side of the vehicle.

[0029] As a result, variations in the curvature of the door glass and door frame are accommodated, preventing the occurrence of non-contact areas between the door glass and the hard seal lip, and allowing vibration energy from the door glass to be transmitted to the hard seal lip through impedance matching. Furthermore, the energy can be dissipated along the route from the hard seal lip to the side wall and then to the outer side wall of the vehicle. Consequently, the vibration reduction effect using impedance matching can be fully realized throughout the entire area of ​​the glass run that contacts the door glass.

[0030] Furthermore, since the side wall portion, which has a lower hardness than the hard portion of the seal lip, deforms and causes the hard portion of the seal lip to come into contact with the door glass, the ability to follow the position of the door glass is improved compared to when the entire exterior seal lip is formed from the hard portion of the seal lip, and the pressing force from the hard portion of the seal lip to the door glass can be reduced. As a result, adverse effects on the sliding between the door glass and the hard portion of the seal lip can be prevented.

[0031] Furthermore, since the hard part of the seal lip and the door glass are in contact, it is possible to suppress the intrusion of outside noise into the vehicle and the leakage of inside noise to the outside.

[0032] Furthermore, even when the door glass is slightly lowered, the contact between the hard part of the seal lip and the door glass is maintained. For example, when driving on rough roads, the seal lip can follow the vibrations of the door glass and prevent the generation of rattling noises. [Brief explanation of the drawing]

[0033] [Figure 1] This is a front view of a car door. [Figure 2] This is a front view showing the glass run used in the door frame of Figure 1. [Figure 3] This is a first embodiment of the present invention, and is a cross-sectional view AA in Figure 1. [Figure 4] This is a comparative form in the first embodiment of the present invention, and is a cross-sectional view aa in Figure 1. [Figure 5]This is a second embodiment of the present invention, shown as a cross-sectional view AA in Figure 1. [Figure 6] This is a third embodiment of the present invention, and is a cross-sectional view of BB in Figure 1. [Figure 7] This is a fourth embodiment of the present invention, and is a cross-sectional view of CC in Figure 1. [Figure 8] This is a cross-sectional view showing a conventional glass run mounting structure (Patent Document 1). [Modes for carrying out the invention]

[0034] A first embodiment of the present invention will be described with reference to Figures 1 to 4. Figure 1 shows a front view of the 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 the 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 installed in the 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 the right front door and the left and right rear doors. It is also applicable to sliding doors in which the door glass rises and falls.

[0035] Figure 2 is a simplified front view of the glass run 10 as seen from the outside of the vehicle. This glass run 10 is composed of a first extruded section 11 corresponding to the horizontal frame portion of the door frame 3, a second extruded section 12 corresponding to the front vertical frame portion of the front door 1, and a third extruded section 13 corresponding to the rear vertical frame portion. The front end of the first extruded section 11 is connected to the upper end of the second extruded section 12 by a first molded section 14. The rear end of the first extruded section 11 is connected to the upper end of the third extruded section 13 by a second molded section 15. Figures 1 and 2 are also used in the second to fourth embodiments described later.

[0036] Figure 3 is a cross-sectional view of AA in Figure 1, showing the glass run 10 attached to the door frame groove 5 of the door frame 3 and the door glass closed. This position corresponds to the third extrusion molding section 13 near the second molded section 15 in Figure 2, and is the region corresponding to the upper rear end of the door glass 4. Also, in the background art of Figure 8, this is the region where a gap occurs between the thickened section 330 and the door glass 600.

[0037] On the other hand, Figure 4 is a cross-sectional view of aa in Figure 1, showing the glass run 10 attached to the door frame groove 5 of the door frame 3 and the door glass 4 closed. This position is the third extruded portion 13, located approximately in the center in the vertical direction in Figure 1, and is the region where the thickened portion 330 and the door glass 600 are in contact in the background art of Figure 8. Figure 4 is included as a comparative example with Figure 3.

[0038] The glass run 10 has a basic structure consisting of a bottom wall 20, an outer side wall 30, and an inner side wall 40. Furthermore, the inner side wall 40 is formed to be larger than the outer side wall 30, and its shape is asymmetrical, with the inner side being larger.

[0039] An outer groove 21 is formed at the connection point between the bottom wall 20 and the outer side wall 30, and an inner groove 22 is formed at the connection point between the bottom wall 20 and the inner side wall 40. Here, the thickness of the inner groove 22 is formed to be greater than the thickness of the outer groove 21. In addition, in order to increase the thickness of the inner groove 22, a protrusion 25 is formed on the opposite side of the inner groove 22, extending from the bottom wall 20. Note that if the thickness of the inner groove 22 is ensured, the protrusion 25 does not need to be formed.

[0040] The bottom wall 20 is formed in a roughly plate-like shape, and multiple bottom wall recesses 23 are formed on the inner surface of the bottom wall 20 (the side facing the door glass 4) in a continuous, parallel manner along its longitudinal direction. In addition, a bottom wall seal lip 24 is formed on the outer surface of the bottom wall 20.

[0041] On the outer side of the outer side wall 30, an outer retaining lip 31 is formed near the connection point with the bottom wall 20, extending toward the tip of the outer side wall 30. In addition, a thinned portion 32 is formed at the base of the outer retaining lip 31 on the outer side wall 30.

[0042] The outer side wall 30 of the vehicle has an outer hard portion 33 formed on it, which is harder than the material that makes up the outer side wall 30. Furthermore, the outer hard portion 33 is divided into an inner hard portion 33a formed on the inner side of the outer side wall 30 and an outer hard portion 33b formed on the outer side. The inner hard portion 33a is formed to be exposed on the inner side of the vehicle, and the outer hard portion 33b is formed to be exposed on the outer side of the vehicle. In addition, the inner hard portion 33a is formed at a position opposite to the outer hard portion 33b.

[0043] The hard outer portion 33b is not formed in the thin-walled portion 32. The hard outer portion 33b is formed in the direction of the tip 34 of the outer side wall 30 from the thin-walled portion 32.

[0044] In the outer side wall 30 of the vehicle, a stepped portion 35 is formed in which the thickness increases from the hard outer portion 33b toward the tip portion 34.

[0045] An exterior seal lip 36 is formed extending inward from the tip 34 of the exterior side wall 30 toward the interior and bottom wall 20. The exterior seal lip 36 consists of a side wall portion 50 connected to the exterior side wall 30 and a seal lip hard portion 51 that is connected to the side wall portion 50 and extends toward the tip of the exterior seal lip 36, with a higher hardness than the side wall portion 50. The seal lip hard portion 51 is formed in a substantially straight line, and on the interior side of the seal lip hard portion 51, a plurality of convex ribs 52 are formed continuously and parallel in the longitudinal direction. Note that the ribs 52 do not need to be formed.

[0046] Furthermore, on the side wall portion 50, a folding base portion 53 is formed on the vehicle side near the connection point with the seal lip hard portion 51, and is thinner than the side wall portion 50.

[0047] The exterior seal lip 36, composed of a side wall portion 50 and a seal lip hard portion 51, is formed over the entire length of the third extruded molding portion 13. It is also desirable that the exterior seal lip 36, composed of a side wall portion 50 and a seal lip hard portion 51, be formed in the second molded molding portion 15 as well, because the problems in the background technology can also occur in the second molded molding portion 15.

[0048] Furthermore, a retaining rib 37 is formed on the outer side of the tip 34 of the outer side wall 30. In addition, an outer cover lip 38 is formed on the inner side of the outer side wall 30, on the tip side of the base of the outer seal lip 36, and in the opposite direction to the bottom wall 20.

[0049] On the exterior side of the interior side wall 40, a first interior seal lip 41 is formed, extending from the tip of the interior side wall 40 outwards towards 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 side of the interior side wall 40, on the side of the second interior seal lip 42 toward the bottom wall 20, extending toward the outside and in the opposite direction to the bottom wall 20. The sub-lip 43 may be formed to extend toward the bottom wall 20. Furthermore, the sub-lip 43 may be omitted.

[0050] Furthermore, a second interior retaining lip 45 is formed on the interior side of the interior side wall 40, near the connection point with the bottom wall 20, and extending toward the tip of the interior side wall 40. A first interior retaining lip 44 is formed between the second interior retaining lip 45 and the tip of the interior side wall 40, extending toward the tip of the interior side wall 40. In addition, a contact rib 46 is formed between the first interior retaining lip 44 and the second interior retaining lip 45.

[0051] An interior cover lip 47 is formed on the interior side of the vehicle, and on the bottom wall 20 side, from the tip of the interior side wall 40.

[0052] In this embodiment, the hardness of the seal lip hard portion 51 is the same as that of the hardness of the outer hard portion 33. However, the hardness of the seal lip hard portion 51 and the outer hard portion 33 do not necessarily have to be the same.

[0053] In this embodiment, the outer rigid section 33 and the seal lip rigid section 51 are made of PP (polypropylene), and the glass run 10, excluding the outer rigid section 33 and the seal lip rigid section 51, is made of olefin-based thermoplastic elastomer (TPO) with an IRHD (International Rubber Hardness) of 80±5, and is manufactured by extrusion molding. The outer rigid section 33 and the seal lip rigid section 51 may also be made of the same TPO as the other parts; in this case, an IRHD of 100±5 is desirable. Furthermore, other rigid resin materials besides PP, such as olefin-based resins like polystyrene, may also be used.

[0054] In Figures 3 and 4, the center pillar 7 is attached to the outer side of the door frame groove 5. The door frame groove 5 is made of metal.

[0055] When the glass run 10 is attached to the door frame groove 5 of the door frame 3, the bottom wall seal lip 24 elastically contacts the door frame groove 5 on the bottom wall 20, and the protruding portion 25 abuts against the door frame groove 5.

[0056] On the outer side wall 30, the outer retaining lip 31 abuts against the hemmed tip 61 of the hemmed door frame groove 5, and the hard outer portion 33b abuts against the inner side of the hemmed door frame groove 5 over a surface area. Furthermore, a gap 60 is formed between the outer side wall 30 on the bottom wall 20 side of the hard outer portion 33b, the thin-walled portion 32, and the outer retaining lip 31.

[0057] Furthermore, the stepped portion 35 does not contact the bent portion of the hemming process, that is, the outer end portion 62 of the door frame groove 5, and a gap portion 39 is formed between the stepped portion 35 and the outer end portion 62 of the door frame groove 5. Also, the tip portion of the center pillar 7 is in contact with the retaining rib 37.

[0058] On its exterior side, the interior side wall 40 abuts against the door frame groove 5 with a contact rib 46, and the first interior retaining lip 44 and the second interior retaining lip 45 abut against the first curved portion 63 and the second curved portion 64 of the door frame groove 5. The interior cover lip 47 is elastically in contact with the door frame 3. The interior side of the interior side wall 40 abuts against the door frame groove 5 over a surface area.

[0059] In Figures 3 and 4, the outer groove portion 21 is deformed so that the inner side of the outer side wall 30 is very close to the bottom wall 20, and the inner groove portion 22 is deformed so that the outer side of the inner side wall 40 and the bottom wall 20 are not as close as the outer side, and is attached to the door frame groove portion 5.

[0060] When the door glass 4 is inserted between the outer side wall 30 and the inner side wall 40 of the vehicle, as shown in Figures 3 and 4, on the outer side, the outer cover lip 38 deforms to the opposite side from the bottom wall 20, and the outer seal lip 36 deforms so that the tip of the hard part of the seal lip 51 moves toward the outer side wall 30, with the bending point 53 of the side wall portion 50 as the pivot point, and contacts the outer side of the door glass 4. The outer side of the door glass 4 also contacts the rib 52 formed on the inner side of the hard part of the seal lip 51.

[0061] As shown in Figure 4, in the background technology of Figure 8, in the region where the thickened portion 330 and the door glass 600 are in contact, the rib 52 of the seal lip hard portion 51 is in contact with the door glass 4, and the outer side is in contact with the inner side portion 33a of the outer hard portion 33. The outer side wall 30, including the seal lip hard portion 51 and the outer hard portion 33, is sandwiched between the door glass 4 and the door frame groove 5 and is slightly compressed outwards. Here, when the hard inner portion 33a and rib 52 (or the seal lip hard portion 51 in the second to fourth embodiments described later) and the door glass 4 are in contact in Figure 4, that is, in the background art of Figure 8, the position of the outer side of the door glass 4 in the region where the thick portion 330 and the door glass 600 are in contact is indicated by X.

[0062] Therefore, in Figure 4, the vibration energy of the door glass 4 is propagated and dissipated through the route of the door glass 4, the hard seal lip portion 51, the inner portion of the hard portion 33a, the outer side wall 30, the outer portion of the hard portion 33b, and the door frame groove portion 5.

[0063] On the other hand, on the interior side of the door glass 4, the first interior sealing lip 41 and the second interior sealing lip 42 both flex and deform so as to move in the direction of the interior side wall 40, and come into contact with the interior side of the door glass 4. The sub-lip 43 does not come into contact with the second interior sealing lip 42.

[0064] As shown in Figure 3, in the background technology of Figure 8, in the region where a gap occurs between the thickened portion 330 and the door glass 600, the position of the door glass 4 is located on the interior side of the vehicle, closer to X. As the position of the door glass 4 changes, the hardened portion 51 of the seal lip also moves inward, creating a gap between the hardened portion 51 and the interior side portion 33a of the hardened portion, but contact between the hardened portion 51 (rib 52) and the door glass 4 is maintained. In Figure 3, the vibration energy of the door glass 4 is propagated and dissipated through the route of the door glass 4, the hard seal lip portion 51, the side wall portion 50, the outer side wall 30, the outer hard portion portion 33b, and the door frame groove portion 5.

[0065] On the other hand, on the interior side, the degree of deflection deformation of the first interior seal lip 41 and the second interior seal lip 42 is greater compared to Figure 4, and the sub-lip 43 comes into contact with the interior side of the second interior seal lip 42, pressing the door glass 4 outwards.

[0066] Next, a second embodiment of the present invention will be described with reference to Figure 5. Figure 5 is a cross-sectional view AA of Figure 1, showing the glass run 10 attached to the door frame groove 5 of the door frame 3 and the door glass 4 closed. This second embodiment is a modified example of the first embodiment described above.

[0067] The differences between this second embodiment and the first embodiment described above are that, in this second embodiment, firstly, the exterior seal lip 36 extends outward and toward the bottom wall 20, and its tip is curved toward the exterior side wall 30; secondly, the side wall portion 50 is formed to be longer, and the rib 52 is not formed on the interior side of the seal lip hard portion 51. However, the point in which the seal lip hard portion 51 and the door glass 4 come into contact when the door glass 4 is closed is the same as in the first embodiment described above.

[0068] When the door glass 4 is inserted between the outer side wall 30 and the inner side wall 40 of the vehicle, on the outer side, the outer cover lip 38 deforms toward the opposite side from the bottom wall 20, and the outer seal lip 36 deforms toward the outer side wall 30 and comes into contact with the outer side of the door glass 4.

[0069] The hard portion 51 of the seal lip is in contact with the door glass 4, and its tip is in contact with the inner portion 33a of the hard portion 33 on the outer side of the vehicle. In the background technology of Figure 8, in the region where the thickened portion 330 and the door glass 600 come into contact, the interior side of the door glass 4 is at position X. In this region, the amount of deformation of the side wall portion 50 toward the exterior side increases due to the fact that the hardness of the side wall portion 50 is lower than that of the seal lip hard portion 51 and the presence of the thin folding base portion 53. Alternatively, as the amount of deformation of the side wall portion 50 toward the exterior side increases, the tip portion of the seal lip hard portion 51 that comes into contact with the interior hard portion portion 33a moves toward the bottom wall 20 on the interior hard portion portion 33a. Therefore, in this second embodiment, the seal lip hard portion 51 comes into contact with the interior hard portion portion 33a of the exterior hard portion 33 throughout the entire region of the third extruded portion 13.

[0070] In Figure 5, the vibration energy of the door glass 4 is propagated and dissipated through the route of the door glass 4, the hard seal lip portion 51, the inner portion of the hard portion 33a, the outer side wall 30, the outer portion of the hard portion 33b, and the door frame groove portion 5.

[0071] Next, a third embodiment of the present invention will be described with reference to Figure 6. Figure 6 is a cross-sectional view of BB in Figure 1, showing the glass run 10 attached to the door frame groove 5 of the door frame 3 and the door glass 4 closed. This position is the second extrusion molding section 12 near the first molded section 14 in Figure 2, and corresponds to the upper front end of the door glass 4. Also, in the background art, this is the area where a gap occurs between the thickened section 330 and the door glass 600, so the position of the door glass 4 is located on the interior side of X. The glass run 10 of this third embodiment is a modified example of the second embodiment described above.

[0072] The differences between this third embodiment and the second embodiment described above are, firstly, in the basic frame, there is no difference in size between the inner side wall 40 and the outer side wall 30 due to differences in mounting locations, and their shape is asymmetrical with the inner side being slightly larger; secondly, the outer hard portion 33 is formed to penetrate from the inner side to the outer side and is formed to protrude outwards to correspond to the recess of the door frame groove portion 5 on the outer side; thirdly, the outer cover lip 38 is formed on the outer side and on the bottom wall 20 side; and fourthly, the bottom wall seal lip 24 is not formed. The point in which the seal lip hard portion 51 of the outer seal lip 36 abuts against the outer hard portion 33 is the same as in the first and second embodiments described above.

[0073] When the door glass 4 is inserted between the outer side wall 30 and the inner side wall 40 of the vehicle, the outer seal lip 36 deforms toward the outer side wall 30 and comes into contact with the outer side of the door glass 4. Then, as shown in Figure 6, the hard portion 51 of the seal lip comes into contact with the door glass 4 and the outer hard portion 33. Therefore, in Figure 6, the vibration energy of the door glass 4 is propagated and dissipated through the route of the door glass 4, the hard portion 51 of the seal lip, the outer hard portion 33, and the door frame groove 5.

[0074] Although not shown in the illustrations, in the background art, even in areas where no gap occurs between the thickened portion 330 and the door glass 600, the seal lip hard portion 51 is in contact with the door glass 4 and the exterior hard portion 33. Therefore, in this third embodiment, the seal lip hard portion 51 is in contact with the exterior hard portion 33 throughout the entire area of ​​the second extruded portion 12.

[0075] Furthermore, it is desirable to form an exterior seal lip 36 consisting of a side wall portion 50 and a seal lip hard portion 51 in the first molded section 14 as well. This is because the problems in the background technology can also occur in the first molded section 14.

[0076] Next, a fourth embodiment of the present invention will be described with reference to Figure 7. Figure 7 is a cross-sectional view when the glass run 10 is attached to a mold 8 whose inner surface shape is the same as the door frame groove 5 of the door frame 3, corresponding to the CC cross-sectional view in Figure 1, and the door glass 4 is closed. This position is the first extrusion molding section 11 near the first mold molding section 14 in Figure 2, and is the region corresponding to the upper front end of the door glass 4. Also, in the background art, this is the region where a gap occurs between the wall thickness section 330 and the door glass 600. Furthermore, the glass run 10 of this fourth embodiment is a modified example of the second embodiment described above.

[0077] The differences between this fourth embodiment and the second embodiment described above are, firstly, that in the basic frame, there is no difference in size between the inner side wall 40 and the outer side wall 30, and their shape is asymmetrical with the inner side being slightly larger; secondly, that the outer hard part 33 is formed to penetrate from the inner side to the outer side; thirdly, that a glass-side seal lip 26 is formed on the door glass 4 side of the bottom wall 20; and fourthly, that the second inner side seal lip 42 and sub-lip 43 are not formed on the inner side wall 40. The point in which the outer side seal lip 36 and the seal lip hard part 51 abut against the outer hard part 33 is the same as in the second embodiment described above.

[0078] When the door glass 4 is inserted between the outer side wall 30 and the inner side wall 40, the outer seal lip 36 and the first inner seal lip 41 come into contact with the door glass 4. Also, the door glass 4 comes into contact with the glass-side seal lip 26 of the bottom wall 20. As shown in Figure 7, when the door glass 4 is closed, the glass-side seal lip 26 comes into contact with the bottom wall 20. The hard seal lip portion 51 comes into contact with the door glass 4 and the outer hard seal portion 33. Therefore, the vibration energy of the door glass 4 is propagated and dissipated through the route of the door glass 4, the hard seal lip portion 51, the outer hard seal portion 33, and the door frame groove portion 5.

[0079] Furthermore, it is desirable to form an exterior seal lip 36 consisting of a side wall portion 50 and a seal lip hard portion 51 in the first mold forming section 14 and the second mold forming section 15. This is because the problems in the background technology may also occur in the first mold forming section 14 and the second mold forming section 15.

[0080] As described in detail above, the embodiments of the present invention provide the following effects. (1) In the first embodiment described above, the exterior seal lip 36 comprises a side wall portion 50 connected to the exterior side wall 30 and a hard seal lip portion 51 connected to the side wall portion 50 and having a higher hardness than the side wall portion 50. A rib 52 is formed on the interior side of the hard seal lip portion 51. Therefore, even when the door glass 4 is located inward from X, the hard seal lip portion 51 moves inward, maintaining contact between the rib 52 and the door glass 4. As a result, the rib 52 is in contact with the interior hard portion 33a of the exterior hard portion 33 throughout the entire area of ​​the third extruded portion 13. Therefore, the effect of vibration reduction using impedance matching can be fully demonstrated throughout the entire area of ​​the third extruded portion 13 that contacts the door glass 4.

[0081] (2) Furthermore, since the side wall portion 50, which has a lower hardness than the hard portion 51 of the seal lip, deforms and causes the hard portion 51 of the seal lip to come into contact with the door glass 4, the ability to follow the position of the door glass 4 is improved compared to when the entire exterior seal lip 36 is formed from the hard portion 51 of the seal lip, and the pressing force from the hard portion 51 of the seal lip to the door glass 4 can be reduced. As a result, adverse effects on the sliding between the door glass 4 and the hard portion 51 of the seal lip can be prevented.

[0082] (3) Furthermore, since the hard seal lip portion 51 and the door glass 4 are in contact, it is possible to suppress the intrusion of outside noise into the vehicle and the leakage of inside noise to the outside of the vehicle.

[0083] (4) Furthermore, even when the door glass 4 is lowered slightly, the contact between the rib 52 and the door glass 4 is maintained, so for example, when the door glass 4 rattles while driving on rough roads, the rib 52 follows the vibration of the door glass 4 and prevents the generation of rattling noise.

[0084] (5) In the second to fourth embodiments described above, the exterior seal lip 36 extends outward and toward the bottom wall 20, and its tip is curved toward the exterior side wall 30, and the hard portion of the seal lip 51 abuts against the door glass 4 and the exterior hard portion 33 (interior hard portion portion 33a). As a result, the hard portion of the seal lip 51 abuts against the interior hard portion portion 33a of the exterior hard portion 33 in the entire area of ​​the first extruded portion 11, the second extruded portion 12, and the entire area of ​​the third extruded portion 13 that abuts against the door glass 4. As a result, the effect of vibration reduction using impedance matching can be fully demonstrated.

[0085] (6) Furthermore, in the side wall portion 50, a thin folding base portion 53 is formed on the outside of the side wall portion 50 near the connection portion with the seal lip hard portion 51. As a result, the degree of deformation of the side wall portion 50 toward the outside of the vehicle is increased due to the fact that the hardness of the side wall portion 50 is lower than that of the seal lip hard portion 51 and the presence of the thin folding base portion 53. As a result, the pressing force of the seal lip hard portion 51 toward the inside of the door glass 4 can be reduced.

[0086] In carrying out the present invention, the invention is not limited to the embodiments described above, and various modifications are possible as long as they do not depart from the purpose of the invention.

[0087] Although the above embodiment describes a door frame 3 equipped with a door frame groove 5, the present invention can also be applied to a door frame 3 that does not have a door frame groove 5. In this case, for example, an exterior cover lip extending toward the bottom wall 20 can be formed on the exterior side of the exterior side wall 30, an outer frame can be inserted between the exterior cover lip and the exterior side wall 30 to bring the outer frame into contact with the exterior side wall 30 (or the exterior hard part 33), and an inner frame can be inserted between the interior side wall 40 and the interior cover lip 47 to bring the inner frame into contact with the interior side wall 40. [Explanation of symbols]

[0088] 3 Door Frame 5. Door frame groove 10 Glass Run 20 Bottom wall 30 Exterior side wall of the vehicle 33 Hard part 40 Inner side wall of the vehicle 41. First interior seal lip 42 Second interior seal lip 48 Hard parts on the inside of the vehicle 50 Side wall side 51. Hard part of the seal lip 52 Ribs 53. Bending point

Claims

1. The basic frame consists of a bottom wall, an outer side wall, and an inner side wall, and the basic frame is attached to the door frame, and the glass run guides the raising and lowering of the door glass. The exterior side wall of the vehicle is provided with an exterior sealing lip that extends from the exterior side wall inward and toward the bottom wall. The exterior seal lip comprises a side wall portion connected to the exterior side wall, and a hard seal lip portion connected to the side wall portion and having a higher hardness than the side wall portion. The glass run is characterized in that the hard portion of the seal lip comes into contact with the door glass.

2. The glass run according to claim 1, wherein the hard portion of the seal lip abuts against the outer side wall of the vehicle.

3. The aforementioned outer side wall of the vehicle includes an outer hardened portion which has a higher hardness than the aforementioned outer side wall. When the hard portion of the seal lip is formed inside the outer side wall of the vehicle, the hard portion of the seal lip abuts against the outer side wall of the region in which the hard portion of the vehicle is formed. When the outer hard portion of the vehicle is formed exposed on the inner side of the outer side wall of the vehicle, the glass run in contact with the outer hard portion of the vehicle according to claim 2.

4. The glass run according to any one of claims 1 to 3, wherein the side wall portion of the exterior seal lip of the vehicle is provided with a thin folding base portion near the connection portion with the hard portion of the seal lip.

5. The glass run according to claim 4, wherein the bending point portion is formed on the vehicle side of the side wall portion.

Images