Glass run

Abstract

To provide a glass run capable of preventing rattling without giving harmful effect to slidability of a door glass.MEANS FOR SOLVING THE PROBLEM: A glass run 10 which has a bottom wall 20, a vehicle outside side wall 30, and a vehicle inside side wall 40 as the basic skeleton, and is mounted on a door frame groove part 5 formed in a door frame 3 is such that: a sub lip 50 constantly contacting a vehicle inside of the vehicle inside seal lip 41 to support when a vehicle inside seal lip 41 is deflected and deformed in a vehicle inside direction by pressing force when a door glass 4 is raised, is formed between the vehicle inside seal lip 41 and the bottom wall 20 in the vehicle outside of the vehicle inside side wall 40; and the sub lip 50 is composed of a first sub lip part 51 extended in a root part direction of the vehicle inside seal lip 41 from a vehicle outside surface of the vehicle inside side wall 40, and a second sub lip part 52 connected to the first sub lip part 51 and extended in a tip part direction of the vehicle inside seal lip 41.SELECTED DRAWING: Figure 6

Description

Technical Field

[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] A door frame is provided at the upper part of a door body of a vehicle, and a channel-shaped glass run is fitted and locked in a door frame groove formed on the inner peripheral edge of the door frame. The glass run guides the up-and-down movement of a door glass by means of glass seal portions on the inside and outside of the vehicle, and seals the inside and outside of the passenger compartment.

[0003] The above glass run is composed of a bottom wall, an outside side wall located on the outside of the vehicle, and an inside side wall located on the inside of the vehicle as a basic framework (main body portion). And it is provided with an outside seal lip and an inside seal lip extending from the tip or the vicinity of the side wall portions on the outside and inside of the vehicle toward the inside of the main body portion respectively. The glass run is attached to a door frame groove provided along the inner circumference of the door frame, and is sealed such that the peripheral portions of the inner and outer surfaces of the ascending and descending door glass are sandwiched by the outside seal lip and the inside seal lip. Further, the glass run supports the peripheral portion of the door glass, and plays a role of smoothly moving the door glass up and down and suppressing rattling of the door glass when the door glass is moved up and down or the like.

[0004] As a glass run that smoothly moves the door glass up and down and suppresses rattling of the door glass when the door glass is moved up and down or the like, the technique of Patent Document 1 is known.

[0005] Patent Document 1, as shown in Figure 8, is a vehicle glass run (glass run) 100 which is arranged along the inner peripheral edge of the sash portion of a vehicle door and comprises opposing side walls 300, 400 rising from both ends of the bottom wall 200, and seal lips 310, 410 provided on the opposing inner surfaces of the side walls 300, 400 on the interior and exterior sides of the vehicle and extending toward the bottom wall 200, wherein when the door glass 600 is raised and lowered, the seal lips 310, 410 slide and guide both sides of the outer peripheral side of the door glass 600, and a support lip (sub-lip) 500 is provided on the inner surface of one side wall on the interior side (interior side wall 400) which constantly contacts and supports the back surface of the interior seal lip 410 when the interior seal lip 410 is deformed by bending toward the side wall (interior side wall 400) due to the pressing force when the door glass 600 is raised, and the sub-lip 500 is The vehicle glass run is composed of a base portion 650 that protrudes toward the bottom wall 200 from the inner surface of one side wall (inner side wall 400) with a thick base portion 640 joined to the inner surface of one side wall, and a support portion 670 that extends from the tip side of the base portion 650 via a bent portion 660 toward the bottom wall 200, and the support portion 670 is formed in a straight line with a substantially uniform thin width from the bent portion 660 to the tip portion 680.

[0006] Then, for example, in order to close the door glass 600, it is moved upward and slid between the inner surfaces of the outer seal lip 310 and the inner seal lip 410, as shown by the solid line in Figure 8. The pressing force of the door glass 600 causes the outer seal lip 310 to bend and deform toward the inward and outward directions via the notch A620 of the outer seal lip 310 and the notch B610 of the inner seal lip 410. As a result, the inner seal lip 410 maintains its position with its back surface 630 contacting the tip 680 of the support portion 670 of the sub-lip 500.

[0007] Here, the door glass 600 moves inward within a range of movement X when it moves upward, but during this movement, only the support portion 670 of the sub-lip 500, which has a small reaction force, is in contact with the back surface 630 of the interior seal lip 410. Therefore, the sliding resistance of the door glass 600 is sufficiently small, and thus, a smooth upward (and downward) movement of the door glass 600 is achieved.

[0008] Figure 9 shows the combined reaction force characteristics (P) between the inner seal lip 410 and the sub-lip 500 when the door glass 600 is positioned between the outer seal lip 310 and the inner seal lip 410. Within the range of the normal amount of movement (X) of the door glass 600 in the inward direction, the combined reaction force P of the support portion 670 of the inner seal lip 410 and the sub-lip 500 acts on the door glass 600. This combined reaction force P gradually increases at a predetermined angle as the amount of movement X increases, but the rise is relatively gentle, and therefore the sliding friction resistance of the door glass 600 with the inner seal lip 410 and the outer seal lip 310 decreases.

[0009] Furthermore, if the door glass 600 moves inward by more than a certain amount X due to a large vibration of the door glass 600, the back surface 630 of the interior seal lip 410 then contacts the bent portion 660 via the support portion 670. In other words, it contacts the tip of the base portion 650 and is supported by the base portion 650. As a result, the door glass 600 is pushed back by the elastic reaction force of the base portion 650, which has relatively high support rigidity, via the interior seal lip 410. Therefore, the vibration of the door glass 600 can be absorbed and it can be reliably supported. Note that in Figure 9, the dashed line Z indicates the case where the support lip (sub-lip) 500 is not formed. [Prior art documents] [Patent Documents]

[0010] [Patent Document 1] Patent No. 4873992 [Overview of the project] [Problems that the invention aims to solve]

[0011] However, in the technology described in Patent Document 1, the support portion 670 of the sub-lip 500 is connected to a thick base portion 650. As shown in Figure 9, within the range of movement X, as the door glass 600 is displaced inward, the reaction force increases due to the influence of the base portion 650. Therefore, the combined reaction force P increases at a predetermined angle as the range of movement X increases. If the rate of increase of the combined reaction force P within the normal range of movement (X) is too large, the excessively large combined reaction force P may cause a malfunction that hinders the raising and lowering operation of the glass 600. Consequently, the design must take into account the influence of the base portion 650, and the door glass 600 cannot be held firmly, especially near the reference position in the range of movement X.

[0012] Therefore, for example, by increasing the thickness of the notch A610 of the interior seal lip 410 and the bent portion 660 of the sub-lip 500, it is possible to increase the combined reaction force P at a glass position close to the reference position in the amount of movement X. However, in this case, the slope of the graph in Figure 9 becomes even larger, and as the door glass 600 moves inward, the combined reaction force P becomes too large, causing problems with the raising and lowering of the door glass 600. [Means for solving the problem]

[0013] Therefore, the present invention provides a glass run that, when the inner and outer sealing lips of the glass run slide along both sides of the door glass and move inward, increases the lip reaction force, particularly on the inner sealing lip side, while suppressing the increase in lip reaction force associated with the amount of movement inward, thereby preventing rattling without adversely affecting the sliding properties of the door glass.

[0014] To solve the above problems, the present invention of claim 1 has a bottom wall, an outer side wall, and an inner side wall as its basic frame, and has an outer seal lip formed at or near the tip of the outer side wall and an inner seal lip formed at or near the tip of the inner side wall, and is attached to a door frame groove formed in the door frame, and when the door glass is raised and lowered, the outer seal lip and the inner seal lip slide guide both sides of the door glass, wherein a sub-lip is formed on the outer side of the inner side wall, between the inner seal lip and the bottom wall, which constantly abuts and supports the inner side of the inner seal lip when the inner seal lip is bent and deformed in the inward direction by the pressing force when the door glass is raised, and the sub-lip is composed of a first sub-lip portion that extends inclined from the outer side surface of the inner side wall toward the base of the inner seal lip and a second sub-lip portion that is connected to the first sub-lip portion and extends toward the tip of the inner seal lip, The sub-lip has a bent portion recess formed on the bottom wall side of the connecting portion between the first sub-lip portion and the second sub-lip portion, and a base portion recess formed on the side opposite to the bottom wall side of the first sub-lip portion at the connecting portion between the first sub-lip portion and the inner side wall of the vehicle. This glass run is characterized in that, when the glass run is installed in the door frame groove, the sub-lip does not come into contact with the interior surface of the interior sealing lip.

[0015] In the present invention of claim 1, a sub-lip is formed on the outer side of the inner side wall of the vehicle interior, between the inner seal lip and the bottom wall, which constantly abuts and supports the inner side of the inner seal lip when the inner seal lip is deformed in the inward direction by the pressing force when the door glass is raised. The sub-lip consists of a first sub-lip portion that extends inclined from the outer side surface of the inner side wall toward the base of the inner seal lip, and a second sub-lip portion that is connected to the first sub-lip portion and extends toward the tip of the inner seal lip. Therefore, when the inner seal lip is deformed in the inward direction, the sub-lip also bends inward. Firstly, the sub-lip has a connection portion between the first sub-lip portion and the inner side wall, and a connection portion between the first sub-lip portion and the second sub-lip portion, and a reaction force is generated from these two locations that presses the inner side of the inner seal lip toward the outer side, thus increasing the reaction force of the sub-lip. As a result, the combined reaction force between the interior seal lip and the sub-lip that press the interior side of the door glass against the exterior side can be increased, allowing the door glass to be held firmly at the reference position (left end of range X) in Figure 9.

[0016] Secondly, when the door glass rises and moves inward, the angle between the first sub-lip and the second sub-lip, and the angle between the first sub-lip and the inner side wall, deforms to a smaller degree. This deformation allows for a gradual increase in the reaction force of the sub-lip that presses the inner side of the inner seal lip outward. As a result, the increase in the combined reaction force of the inner seal lip and the sub-lip that presses the inner side of the door glass outward, associated with the amount of movement of the inner seal lip inward, can be suppressed. Furthermore, since the sub-lip has a bent portion recess formed on the bottom wall side of the connecting portion between the first sub-lip portion and the second sub-lip portion, and a base portion recess formed on the side opposite to the bottom wall side of the first sub-lip portion at the connecting portion between the first sub-lip portion and the interior side wall, the reaction force of the sub-lip associated with the amount of movement of the interior seal lip toward the interior of the vehicle can be adjusted by the bent portion recess and the base portion recess. Furthermore, when the glass run is installed in the door frame groove, the sub-lip does not come into contact with the interior surface of the interior seal lip. Therefore, when the interior seal lip is pressed against the door glass and displaced inward, the tip of the second sub-lip portion of the sub-lip, or the exterior surface of the tip of the second sub-lip portion, can come into contact with the interior surface of the interior seal lip.

[0017] Therefore, the sub-lip, which consists of a first sub-lip portion extending from the outer surface of the inner side wall toward the base of the inner seal lip and a second sub-lip portion connected to the first sub-lip portion and extending toward the tip of the inner seal lip, can increase the combined reaction force between the inner seal lip and the sub-lip that presses the inner side of the door glass toward the outer side at the reference position, while suppressing the degree to which the combined reaction force between the inner seal lip and the sub-lip increases with the amount of movement of the inner seal lip toward the inner side. Thus, rattling can be prevented without adversely affecting the sliding properties of the door glass. [Effects of the Invention]

[0020] The glass run has a basic frame consisting of a bottom wall, an outer side wall, and an inner side wall, and has an outer seal lip formed at or near the tip of the outer side wall and an inner seal lip formed at or near the tip of the inner side wall, and a sub-lip is formed on the outer side of the inner side wall, between the inner seal lip and the bottom wall, which constantly contacts and supports the inner side of the inner seal lip when the inner seal lip is bent and deformed in the inward direction due to the pressing force when the door glass is raised, and the sub-lip is inclined from the outer side surface of the inner side wall toward the base of the inner seal lip Since it consists of a first sub-lip portion that extends at an angle and a second sub-lip portion that is connected to the tip of the first sub-lip portion and extends in a bend toward the tip of the interior seal lip, when the interior seal lip deforms by bending in the interior direction, the sub-lip also bends inward. Firstly, the sub-lip has a connection portion between the first sub-lip portion and the interior side wall, and a connection portion between the first sub-lip portion and the second sub-lip portion, and a reaction force is generated from these two locations that presses the interior side of the interior seal lip toward the exterior side, thereby increasing the reaction force of the sub-lip. As a result, the combined reaction force of the interior seal lip and the sub-lip that presses the interior side of the door glass toward the exterior side can be increased, so the door glass can be held firmly at the reference position (left end of range X) in Figure 9.

[0021] Second, when the door glass rises and moves toward the inside of the vehicle, the angle between the first sub-lip portion and the second sub-lip portion, and the angle between the first sub-lip portion and the inner side wall of the vehicle become smaller, so that due to the above deformation, the degree of increase in the reaction force of the sub-lip pressing the inner side of the inner side seal lip toward the outside of the vehicle can be moderated. As a result, the degree of increase in the combined reaction force of the inner side seal lip and the sub-lip pressing the inner side of the door glass toward the outside of the vehicle as the inner side of the inner side seal lip moves toward the inside of the vehicle can be suppressed.

[0022] Therefore, the sub-lip composed of a first sub-lip portion extending from the outer side surface of the inner side wall of the vehicle toward the root portion of the inner side seal lip and a second sub-lip portion connected to the first sub-lip portion and extending toward the tip portion of the inner side seal lip can increase the combined reaction force of the inner side seal lip and the sub-lip pressing the inner side of the door glass toward the outside of the vehicle at the reference position, while suppressing the degree of increase in the combined reaction force of the inner side seal lip and the sub-lip as the inner side of the inner side seal lip moves toward the inside of the vehicle. Therefore, rattling can be prevented without adversely affecting the sliding property of the door glass.

Brief Description of the Drawings

[0023] [Figure 1] It is a front view of an automobile door seen from the outside of the vehicle. [Figure 2] It is a front view showing a glass run used for the door frame of FIG. 1. [Figure 3] It is a cross-sectional view taken along line A-A of FIG. 1 when the glass run of the embodiment of the present invention is attached to the door frame. [Figure 4] It is an enlarged view of the sub-lip in FIG. 3. [Figure 5] It shows an embodiment of the present invention and is a cross-sectional view of a glass run for explaining the relationship between the displacement of the door glass and the deformation of the inner side seal lip and the sub-lip. [Figure 6] It shows an embodiment of the present invention and is a cross-sectional view of a glass run for explaining the relationship between the displacement of the door glass and the deformation of the inner side seal lip and the sub-lip. [Figure 7] This is a characteristic diagram showing the combined reaction force between the interior sealing lip and the sub-lip in the glass run of an embodiment of the present invention. [Figure 8] Figure 1 shows a cross-sectional view along line AA illustrating a conventional glass run (Patent Document 1). [Figure 9] This is a characteristic diagram showing the combined reaction force between the interior sealing lip and sub-lip in a conventional glass run (Patent Document 1). [Modes for carrying out the invention]

[0024] Embodiments of the present invention will be described with reference to Figures 1 to 7. 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 on the inner periphery 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 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.

[0025] Figure 2 is a simplified front view of only the glass run 10 from Figure 1, as seen from the outside of the vehicle. The 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 (front vertical side portion) corresponding to the front vertical frame portion of the front door 1, and a third extruded section 13 (rear vertical side portion) 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.

[0026] Figure 3 is a cross-sectional view taken along line AA in Figure 1 when the glass run is attached to the door frame. The glass run 10 is formed in a channel shape (with a roughly U-shaped cross-section) with a bottom wall 20, an outer side wall 30, and an inner side wall 40 as its basic framework. The connection between the bottom wall 20 and the outer side wall 30 and the inner side wall 40 is connected by outer and inner grooves 21, 21 so that it can be freely deployed. 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, so the positions of the contact points (surfaces) with respect to the door glass 4 are offset between the position of the inner seal lip 41 and the outer seal lip 31.

[0027] The bottom wall 20 is formed in a roughly plate shape, and multiple bottom wall recesses 22 are formed on the inner surface of the bottom wall 20 (door glass 4 side) in a continuous parallel manner along the longitudinal direction. In addition, a bottom wall seal lip 23 is formed on the outer surface of the bottom wall 20, and the bottom wall seal lip 23 abuts against a channel-shaped (roughly U-shaped cross-section) door frame groove 5 formed in the door frame 3, sealing the space between the bottom wall 20 and the door frame groove 5 of the door frame 3.

[0028] On the outer side of the outer side wall 30, a first outer retaining lip 33 and a second outer retaining lip 34 are formed near the connection point with the bottom wall 20 and towards the tip of the outer side wall 30, and these lips engage with the door frame groove 5. The first outer retaining lip 33 and the second outer retaining lip 34 hold the bent door frame groove 5.

[0029] On the interior side of the exterior side wall 30, an exterior sealing lip 31 is formed facing the bottom wall 20 and in contact with the door glass 4. At the tip of the exterior side wall 30, an exterior cover lip 36 is formed facing the opposite side from the exterior sealing lip 31. The exterior cover lip 36, together with the exterior sealing lip 31, contacts the exterior surface of the door glass 4, preventing the intrusion of rainwater, dust, and noise, and improving sealing performance.

[0030] A locking portion 35 is formed at the base of the exterior cover lip 36, facing outwards, to secure the end of the pillar garnish 7 and seal the gap between the pillar garnish 7 and the surface of the door glass 4.

[0031] On the interior side of the interior side wall 40, near the connection point with the bottom wall 20, an interior first retaining lip 43 and an interior second retaining lip 44 are formed, which engage with the curved portion of the door frame groove 5 having an arc-shaped curved section. A contact lip 45 is formed between the two retaining lips 43 and 44. The interior side wall 40 is held in the curved door frame groove 5 by the two retaining lips 43 and 44 and the contact lip 45.

[0032] On the exterior side of the interior side wall 40, an interior seal lip 41 is formed, extending outward and toward the bottom wall 20 from between the tip of the interior side wall 40 and the bottom wall 20, with the exterior side surface sliding in contact with the door glass 4. The interior seal lip 41 has a nearly uniform thickness throughout and is an arc shape that bulges outward. The connection portion with the interior side wall 40 is formed to be slightly thinner, making it easier for the interior seal lip 41 to follow the movement of the door glass 4. The tip of the interior seal lip 41 is thicker on the interior side wall 40 side.

[0033] An interior cover lip 46 is formed on the opposite side (interior side) of the interior seal lip 41 at the tip of the interior side wall 40. The interior cover lip 46 abuts against the tip of the door frame groove 5, preventing the intrusion of rainwater, dust, and noise, and improving sealing performance.

[0034] Between the interior seal lip 41 of the interior side wall 40 and the bottom wall 20, a sub-lip 50 is formed extending from the exterior side of the interior side wall 40 toward the interior side of the interior seal lip 41. When the glass run 10 is installed in the door frame groove 5, the sub-lip 50 does not come into contact with the interior surface of the interior seal lip 41.

[0035] Figure 4 is an enlarged view of the sub-lip in Figure 3. The sub-lip 50 consists of a first sub-lip portion 51 that extends inclined from the outer surface of the inner side wall 40 toward the base of the inner seal lip 41, that is, in the opposite direction to the bottom wall 20, and a second sub-lip portion 52 that is connected to the tip of the first sub-lip portion 51, is toward the bottom wall 20, and extends inclined, bending toward the tip of the inner seal lip 41.

[0036] In Figures 3 and 4, the sub-lip 50 is formed in a horizontal V-shape that opens towards the bottom wall 20. At the connecting portion 54 between the first sub-lip portion 51 and the second sub-lip portion 52, a thin-walled bent portion recess 55 is formed on the bottom wall 20 side. In addition, at the connecting portion between the first sub-lip portion 51 and the interior side wall 40, a thin-walled base portion recess 56 is formed on the side of the first sub-lip portion 51 opposite to the bottom wall 20. These bent portion recesses 55 and base portion recesses 56 have the function of adjusting the reaction force of the sub-lip 50 in response to the amount of movement of the interior seal lip 41 toward the interior of the vehicle, which will be described later.

[0037] In this embodiment, both the bent portion recess 55 and the base portion recess 56 are formed, but either one or both may be formed.

[0038] The first sub-lip portion 51 and the second sub-lip portion 52 are both straight and have a substantially uniform thickness, except for the bent portion recess 55 and the base portion recess 56. The length of the first sub-lip portion 51 is formed to be longer than that of the second sub-lip portion 52. However, the thickness does not have to be uniform, and the lengths may be the same, or the second sub-lip portion 52 may be formed to be longer than the first sub-lip portion 51.

[0039] Figure 5 is a cross-sectional view of the glass run to illustrate the relationship between the displacement of the door glass and the deformation of the interior seal lip and sub-lip. Figure 7 is a characteristic diagram showing the combined reaction force of the interior seal lip 41 and sub-lip 50 in the glass run 10. When the door glass 4 is inserted between the interior seal lip 41 and the exterior seal lip 31 of the glass run 10, the space between the door glass 4 and the exterior seal lip 41 is sealed by the exterior surface of the interior seal lip 41 and the interior surface of the exterior seal lip 31.

[0040] Simultaneously, the interior seal lip 41 is pressed against the door glass 4 and displaced inward, causing the tip 53 of the second sub-lip portion 52 of the sub-lip 50, or the exterior surface of the tip 53 of the second sub-lip portion 53, to come into contact with the interior surface of the interior seal lip 41. Therefore, the sub-lip 50 is constantly in contact with the interior surface of the interior seal lip 41 when the interior seal lip 41 is bent and deformed inward due to the pressing force when the door glass 4 rises. Furthermore, the sub-lip 50 deforms overall toward the interior side wall 40, starting from the bent recess 55 and the base recess 56. At this time, the reaction force associated with the deformation of the interior seal lip 41 and the reaction force generated when the sub-lip 50 deforms act as a combined reaction force P on the interior surface of the door glass 4.

[0041] In this invention, the sub-lip 50 is composed of a first sub-lip portion 51 that extends inclined from the outer surface of the inner side wall 40 toward the base of the inner seal lip 41, and a second sub-lip portion 52 that is connected to the tip of the first sub-lip portion 51, is in the direction of the bottom wall 20, and extends inclined, bending toward the tip of the inner seal lip 41. As a result of the deformation of the sub-lip 50, a reaction force acts on the inner surface of the inner seal lip 41 that resists the narrowing of the angle between the first sub-lip portion 51 and the second sub-lip portion 52 at the connecting portion 54 between the first sub-lip portion 51 and the second sub-lip portion 52, and a reaction force that resists the narrowing of the angle between the inner side wall 40 and the first sub-lip portion 51.

[0042] As a result, as is clear from the resultant force P near the solid line on the left side of Figure 7 (the left end of range X), the combined reaction force P of the reaction force of the sub-lip 50 on the interior side of the door glass 4 and the reaction force of the interior seal lip 41 can be increased compared to the conventional technology (Patent Document 1). Therefore, the door glass 4 can be held more strongly than in the conventional technology at the reference position, that is, at the position where the door glass 4 is located furthest outward when the door glass 4 is moving up and down.

[0043] Furthermore, when comparing the sub-lip 50 of this embodiment with a case where only the second sub-lip portion 52 is formed, and the second sub-lip portion 52 is formed from the outer surface of the inner side wall 40 of the vehicle, it was confirmed that the reaction force from the sub-lip 50 increased by approximately 15%.

[0044] Figure 6 is a cross-sectional view of the glass run to illustrate the relationship between the displacement of the door glass and the deformation of the interior seal lip and sub-lip. It shows the state in Figure 5, where the door glass 4 has been further displaced inward, reaching its maximum inward displacement (the solid line on the right side of Figure 7 (the rightmost end of range X)). In this case, the interior seal lip 41 and sub-lip 50 follow suit and are displaced inward. The interior seal lip 41 is tilted, and the sub-lip 50 deforms further towards the interior side wall 40, starting from the bent recess 55 and the base recess 56. Additionally, the area in which the exterior surface of the second sub-lip portion 52 of the sub-lip 50 contacts the interior surface of the interior seal lip 41 increases.

[0045] In this deformation, specifically, the angle between the first sub-lip portion 51 and the second sub-lip portion 52 at the connecting portion 54 of the first sub-lip portion 51 and the second sub-lip portion 52 becomes even narrower, and the angle between the interior side wall 40 and the first sub-lip portion 51 becomes even narrower. In this deformation, the load on the sub-lip 50 is distributed and the force can be relieved, so the increase in the reaction force of the sub-lip 50 becomes gradual. As a result, in the range X from the solid line on the left to the solid line on the right, which represents the amount of movement of the door glass 4 during normal raising and lowering in Figure 7, the degree to which the combined reaction force P of the interior seal lip and sub-lip that presses the interior side of the door glass 4 outward due to the amount of movement of the interior seal lip 41 inward can be suppressed.

[0046] Therefore, the sub-lip 50, which consists of a first sub-lip portion 51 extending inclined from the outer surface of the inner side wall 40 toward the base of the inner seal lip 41, and a second sub-lip portion 52 connected to the tip of the first sub-lip portion 51, bending toward the tip of the inner seal lip 41 and extending inclined, can increase the combined reaction force P between the inner seal lip 41 and the sub-lip 50 that presses the inner side of the door glass 4 toward the outer side at the reference position, while suppressing the degree of increase in the combined reaction force P between the inner seal lip 41 and the sub-lip 50 due to the amount of movement X of the inner seal lip 41 toward the inner side. As a result, the door glass 4 can be held firmly, and rattling can be prevented without adversely affecting the sliding properties of the door glass 4.

[0047] Furthermore, in the sub-lip 50 of this embodiment, when neither the bent portion recess 55 nor the base portion recess 56 is formed, or when only one of them is formed, an increase in the absolute value of the combined reaction force P at the reference position is observed, and it was confirmed that the tendency for the combined reaction force P to increase within the displacement amount X is the same as in this embodiment. Therefore, the bent portion recess 55 and the base portion recess 56 can be used to adjust the reaction force of the in-vehicle side surface of the in-vehicle seal lip 41 from the sub-lip 50.

[0048] Furthermore, in this embodiment, since there is no thick base portion 650 as in the conventional sub-lip (Figure 8), even when the door glass 4 moves significantly inward, such as when the door is tightly closed, the angle between the first sub-lip portion 51 and the second sub-lip portion 52 at the connecting portion 54 of the sub-lip 50 becomes even narrower, and the angle between the inward side wall 40 and the first sub-lip portion 51 becomes even narrower. This deformation can accommodate this, so the combined reaction force P does not increase sharply near point Y in the conventional design, and the vibration of the door glass 4 can be absorbed and it can be reliably supported.

[0049] In this embodiment, the glass run 10 was manufactured by extrusion molding using an olefin-based thermoplastic elastomer (TPO) with an IRHD (International Rubber Hardness) of 80±5. In the embodiments of the present invention, the material constituting the glass run 10 can be rubber, thermoplastic elastomer, soft synthetic resin, etc. In the case of rubber, EPDM (ethylene propylene diene rubber) is preferable, and as for thermoplastic elastomers, olefin-based thermoplastic elastomer (TPO) or dynamically crosslinked thermoplastic elastomer (TPV) are preferable from the viewpoint of weather resistance, recyclability, cost, etc.

[0050] 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.

[0051] For example, in the above embodiment, the glass run 10 is formed with an asymmetrical shape in which the inner side wall 40 is larger than the outer side wall 30, and the inner side is larger. However, it can also be applied to glass runs that are nearly symmetrical, as in the prior art. [Explanation of Symbols]

[0052] 1 Front Door 3 Door Frame 5 grooves 10 Glass Run 20 Bottom wall 30 Exterior side wall of the vehicle 31 Exterior sealing lip 40 Inner side wall of the vehicle 41 Interior sealing lip 50 Sublip 51 First sub-lip section 52 Second Sub-Lip Section 53. Tip of the second sub-lip section 54 Connecting part 55 Bent recess 56. Base recess

Claims

[Claim 1] A glass run having a bottom wall, an outer side wall, and an inner side wall as its basic frame, having an outer seal lip formed at or near the tip of the outer side wall and an inner seal lip formed at or near the tip of the inner side wall, attached to a door frame groove formed in the door frame, and the outer seal lip and the inner seal lip slidingly guide both sides of the door glass when the door glass is raised and lowered, On the exterior side of the interior side wall, between the interior seal lip and the bottom wall, a sub-lip is formed that constantly abuts against and supports the interior side of the interior seal lip when the interior seal lip is deformed in the interior direction due to the pressing force when the door glass is raised. The sub-lip includes a first sub-lip portion that extends inclined from the outer surface of the inner side wall of the vehicle towards the base of the inner seal lip, It consists of a second sub-lip portion connected to the first sub-lip portion and extending toward the tip portion of the vehicle-side seal lip, The sub-lip has a bent portion recess formed on the bottom wall side of the connecting portion between the first sub-lip portion and the second sub-lip portion, and a base portion recess formed on the side of the connecting portion between the first sub-lip portion and the vehicle-side side wall opposite to the bottom wall side of the first sub-lip portion. A glass run characterized in that, when the glass run is installed in the door frame groove, the sub-lip does not come into contact with the interior surface of the interior sealing lip.

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