JP7804615B2 - Glass run and waist seal - Google Patents

Description

The present invention relates to glass runs and waist seals that are applied to automobile door glass and are used to slide or hold the door glass in place.

Generally speaking, as shown in Figure 17, a conventional glass run GR has a generally U-shaped base 20 consisting of a base bottom 201, an interior side wall 202, and an exterior side wall 203, and a pair of seal lips, an interior seal lip 21 and an exterior seal lip 22, that extend from the tips of the side walls 202, 203 toward the inside of the base.

The conventional glass run GR also has a sub-lip 27 on the base 201 side (root side) of the interior sidewall 202 that faces the interior seal lip 21 in a free state and is sandwiched between the interior seal lip 21 and the interior sidewall 202 when the door glass DG is in a sliding state. In other words, with this conventional glass run GR, when the door glass DG is significantly displaced toward the interior of the vehicle and the interior seal lip 21 is significantly deflected and deformed, the interior seal lip 21 and the sub-lip 27 work together to support the door glass DG, thereby suppressing rattling of the door glass DG.

Patent No. 5100029

However, with the conventional glass run GR, while increasing the reaction force of the sub-lip 27 to suppress large fluttering of the door glass DG that occurs, for example, when the door is closed with the door glass DG half-open, can effectively suppress vibration of the door glass DG, when variations in the position of the door glass DG in the vehicle width direction occur due to variations in the dimensions of the vehicle and door panel, the increased reaction force of the sub-lip 27 can cause excessive sliding resistance of the door glass DG, reducing the ability of the door glass DG to be raised and lowered, leaving room for improvement.

The present invention was devised with an eye on these technical challenges, and aims to provide a glass run and waist seal that can achieve high vibration suppression for the door glass while ensuring good lifting and lowering performance of the door glass.

In one aspect, the glass run according to the present invention comprises a base portion having a substantially U-shaped cross section, the base portion consisting of an interior side wall portion and an exterior side wall portion extending from both ends of the base portion in the vehicle width direction; an interior seal lip and an exterior seal lip extending from the tips of the side walls toward the inside of the base and arranged to be in sliding contact with the door glass that moves up and down inside the base along the longitudinal direction of the side walls; and an auxiliary member formed from a dilatant fluid that abuts against the interior seal lip when the interior seal lip is deflected and deformed toward the interior of the vehicle.

In this way, the door glass can be supported by an auxiliary member made of dilatant fluid. Therefore, within the range of vehicle variations, the dilatant fluid that makes up the auxiliary member flexibly deforms, eliminating the risk of excessively increasing the sliding resistance of the door glass. This ensures smooth movement of the door glass up and down.

On the other hand, if the displacement of the door glass exceeds the range caused by the vehicle variations, the dilatant fluid that makes up the support member instantly hardens, making it possible to instantly increase the reaction force of the support member. This reduces the vibration (amplitude) of the door glass and allows it to be quickly damped.

In a preferred embodiment of the glass run according to the present invention, the auxiliary member is provided on the inner surface of the interior sidewall portion and contacts the leading end of the interior seal lip when the interior seal lip is deflected and deformed toward the interior of the vehicle.

In this way, by configuring the auxiliary member to abut against the tip of the interior seal lip, the interior seal lip does not abut against the auxiliary member when the interior seal lip is positioned on the exterior side of the vehicle, but only abuts against the auxiliary member when the interior seal lip is pressed toward the interior side by a predetermined amount. This makes it possible to reduce the initial reaction force of the interior seal lip, effectively reducing the sliding resistance of the door glass within the range caused by vehicle variations.

In a further preferred embodiment of the glass run according to the present invention, the glass run further comprises a sub-lip extending from the inner surface of the interior side wall portion toward the inside of the base and elastically contacting the interior seal lip when the interior seal lip is flexed and deformed toward the interior of the vehicle, and the auxiliary member is preferably provided on the surface of the sub-lip facing the interior seal lip and contacting the interior seal lip when the interior seal lip is flexed and deformed toward the interior of the vehicle.

In this way, by placing the auxiliary member on the surface of the sub-lip facing the interior seal lip and between the sub-lip and the interior seal lip, it is possible to delay changes in the reaction force of the sub-lip. This prevents the reaction force of the sub-lip from increasing significantly within the range of movement of the door glass in the vehicle width direction, which is based on vehicle variations, and ensures smooth movement of the door glass up and down.

On the other hand, if a force large enough to exceed the vehicle widthwise movement range of the door glass based on the vehicle variations occurs to the interior seal lip, the dilatant fluid that makes up the auxiliary member instantly hardens, and the deflection deformation of the interior seal lip is transmitted directly to the sub-lip via the auxiliary member, instantly increasing the reaction force of the sub-lip and accelerating the change in reaction force of the sub-lip. This reduces the vibration (amplitude) of the door glass and allows it to be quickly damped.

Furthermore, according to the present invention, a sub-lip is provided at the base, allowing a reaction force to be generated by the interior seal lip and the sub-lip. While this may increase the vibration (amplitude) of the door glass by the amount of deflection and deformation of the sub-lip, the reaction force of the sub-lip acting in addition to the interior seal lip allows the vibration of the door glass to be more quickly damped and converged.

In a further preferred embodiment of the glass run according to the present invention, the auxiliary member is preferably provided on the inner surface of the interior side wall portion and contacts the base portion of the interior seal lip when the interior seal lip is deflected and deformed toward the interior of the vehicle.

In this way, by arranging the auxiliary member at the base of the interior seal lip, it is possible to increase the initial reaction force of the interior seal lip. Although the initial reaction force of the interior seal lip is increased, the dilatant fluid that makes up the auxiliary member flexibly (gently) deforms when the door glass is raised or lowered. This prevents a significant increase in reaction force within the range of movement of the door glass in the vehicle width direction due to variations between vehicles, ensuring smooth raising and lowering of the door glass.

On the other hand, if a force large enough to exceed the vehicle widthwise movement range of the door glass based on the vehicle variations occurs to the interior seal lip, the dilatant fluid that makes up the auxiliary member instantly hardens, instantly increasing the reaction force of the auxiliary member and reducing the vibration (amplitude) of the door glass. In addition, the increased initial reaction force has the advantage of effectively suppressing the initial vibration of the door glass in particular.

In one aspect, the waist seal according to the present invention comprises a mounting base attached to an interior door panel or a door trim that covers the interior door panel; a seal lip extending from the mounting base toward the exterior of the vehicle and slidingly contacting the door glass to seal between the interior door panel or the door trim and the door glass; and an auxiliary member formed from a dilatant fluid, located on the exterior side of the mounting base so as to face the seal lip, and coming into contact with the seal lip when the seal lip is deflected toward the interior of the vehicle.

In this way, the door glass can be supported by an auxiliary member made of dilatant fluid. Therefore, within the range of vehicle variations, the dilatant fluid that makes up the auxiliary member flexibly deforms, eliminating the risk of excessively increasing the sliding resistance of the door glass. This ensures smooth movement of the door glass up and down.

On the other hand, if the displacement of the door glass exceeds the range caused by the vehicle variations, the dilatant fluid that makes up the support member instantly hardens, making it possible to instantly increase the reaction force of the support member. This reduces the vibration (amplitude) of the door glass and allows it to be quickly damped.

Here, in a preferred embodiment of the waist seal according to the present invention, a plurality of the seal lips are provided on the vehicle exterior side of the mounting base facing the door glass, along the direction of up and down movement of the door glass, and a plurality of the auxiliary members are provided facing each of the seal lips, and abut against each of the seal lips when the seal lips are deflected and deformed toward the vehicle interior.

In this way, multiple auxiliary members are provided to face each seal lip, and these multiple auxiliary members make it possible to adjust the reaction force when each seal lip flexes and deforms. Therefore, each auxiliary member ensures smooth movement of the door glass up and down without significantly increasing the sliding resistance of each seal lip against the door glass.

On the other hand, even if the displacement of the door glass exceeds the range caused by the vehicle variations, the dilatant fluid that makes up each auxiliary member instantly hardens, making it possible to instantly increase the reaction force of each auxiliary member. This effectively reduces the vibration (amplitude) of the door glass and quickly damps it.

According to the present invention, the door glass is supported by auxiliary members made of dilatant fluid. Therefore, within the range caused by vehicle variations, the dilatant fluid that makes up the auxiliary members flexibly deforms, ensuring smooth movement of the door glass up and down. However, if the displacement of the door glass exceeds the range caused by vehicle variations, the dilatant fluid that makes up each auxiliary member instantly hardens, reducing and quickly damping the vibration (amplitude) of the door glass.

1 is a front view of a door to which a glass run according to the present invention is attached. 2 is a cross-sectional view of the glass run according to the first embodiment of the present invention taken along line AA in FIG. 1. [0023]FIG. 2 is a cross-sectional view of the first embodiment of the waist seal according to the present invention taken along line BB in FIG. 1. [0023]FIG. 1A and 1B are diagrams showing the state of the glass run when the door glass vibrates, in which (a) is the state where the door glass is located at the outermost position of the vehicle, (b) is the state where the door glass is located at the center, (c) is the state where the door glass is located at the innermost position of the vehicle within the allowable range of fluctuation, and (d) is a cross-sectional view of the glass run showing the state where the door glass is located at the innermost position of the vehicle. 3 is a graph showing the reaction force characteristics of the glass run shown in FIG. 2 . 3 is a graph showing the amplitude and attenuation characteristics of the glass run shown in FIG. 2 . 1. FIG. 1 is a cross-sectional view of a modified example of the first embodiment of the glass run according to the present invention, taken along line AA in FIG. 1A and 1B are diagrams showing the state of the glass run when the door glass vibrates, in which (a) is the state where the door glass is located at the outermost position of the vehicle, (b) is the state where the door glass is located at the center, (c) is the state where the door glass is located at the innermost position of the vehicle within the allowable range of fluctuation, and (d) is a cross-sectional view of the glass run showing the state where the door glass is located at the innermost position of the vehicle. 8 is a graph showing the reaction force characteristics of the glass run shown in FIG. 7. 1. FIG. 4 is a cross-sectional view of a second embodiment of the glass run according to the present invention, taken along line AA of FIG. 1A and 1B are diagrams showing the state of the glass run when the door glass vibrates, in which (a) is the state where the door glass is located at the outermost position of the vehicle, (b) is the state where the door glass is located at the center, (c) is the state where the door glass is located at the innermost position of the vehicle within the allowable range of fluctuation, and (d) is a cross-sectional view of the glass run showing the state where the door glass is located at the innermost position of the vehicle. 11 is a graph showing the reaction force characteristics of the glass run shown in FIG. 10 . 11 is a graph showing the amplitude and attenuation characteristics of the glass run shown in FIG. 10. 1. FIG. 4 is a cross-sectional view of a second embodiment of the waist seal according to the present invention, taken along line BB of FIG. 1A and 1B are cross-sectional views of the glass run showing the state of the glass run when the door glass vibrates, in which (a) is the state in which the door glass is positioned at the outermost position of the vehicle, (b) is the state in which the door glass is positioned at the outermost position of the vehicle within the allowable range of fluctuation, (c) is the state in which the door glass is positioned at the center, and (d) is the state in which the door glass is positioned at the innermost position of the vehicle. 1 is a graph showing the reaction force characteristics of a conventional glass run using an auxiliary member made of a sponge material. 1A and 1B are diagrams showing the state of the glass run when the door glass vibrates, in which (a) is the state in which the door glass is located at the outermost position of the vehicle, (b) is the state in which the door glass is located at the center, (c) is the state in which the door glass is located inside the allowable range of fluctuation and the sub-lip is abutting the inner side wall portion of the base, and (d) is a cross-sectional view of the glass run showing the state in which the door glass is located at the innermost position of the vehicle. 1 is a graph showing the reaction force characteristics of a conventional glass run using a sub-lip.

Embodiments of the glass run and waist seal according to the present invention applied to an automobile front door (hereinafter simply referred to as "door") 1 will be described in detail below with reference to the drawings. For ease of explanation, the following embodiments will be described with the top and bottom of the vehicle body installation state as the reference point, with the upper side of Figure 1, which corresponds to the upper side in the vertical direction, defined as "top," and the lower side of Figure 1, which corresponds to the lower side in the vertical direction, defined as "bottom."

(Door configuration)
FIG. 1 shows a front view of a door 1 to which a glass run 2 according to the present invention is attached.

As shown in FIG. 1, the door 1 has a door body 11 and a door sash 12 that is connected to the door body 11 and extends upward in an arch shape from a door waist portion 13 of the door body 11. A glass opening W is formed between the door body 11 and the door sash 12, and a glass run 2 is attached to the periphery of this glass opening W.

The glass run 2 has a pair of extruded vertical sides 2a, 2b and an upper side 2c connecting the vertical sides 2a, 2b, which are connected to the upper side 2c by molded portions 2d, 2e, respectively. The glass run 2 guides the door glass DG when it is raised or lowered, absorbs vibrations from the door glass DG when the vehicle is moving and when the door 1 is closed, and provides a watertight and airtight seal between the door glass DG and the door sash 12.

In addition, a pair of waist seals, an interior waist seal 3 (corresponding to the waist seal according to the present invention) and an exterior waist seal 4, are arranged on the interior and exterior sides of the door waist opening 130 of the door body 11, facing each other across the door glass DG.

The door glass DG appears and disappears through the upwardly opening door waist opening 130, and is arranged so that it can move up and down along the vertical sides 121, 122 of the door sash 12, which extend in the vertical direction. The door glass DG moves up and down based on the power output from a window regulator (see symbol WR in Figure 3) installed inside the door body 11.

[First embodiment]
2 to 6 show a first embodiment of the glass run and the waist seal according to the present invention.

(Glasslan composition)
FIG. 2 is a cross section of the vertical side portion 121 of the glass run 2 according to the first embodiment of the present invention, taken along line AA in FIG.

As shown in FIG. 2, the vertical side portion 121 of the door sash 12 has a generally U-shaped cross section, formed by integrally bending the bottom wall 121a, the interior side wall 121b, and the exterior side wall 121c. The interior side wall 121b is connected to an inner door panel (not shown), which is the interior door panel, and the exterior side wall 121c is connected to an outer door panel (not shown), which is the exterior door panel.

The glass run 2 has a generally U-shaped cross section (transverse cross section) perpendicular to the longitudinal direction, and is formed as a continuous, long piece by extrusion molding a thermoplastic resin such as a thermoplastic elastomer (TPE). The glass run 2 comprises a base 20 attached to the door sash 12, and a pair of seal lips: an interior seal lip 21 and an exterior seal lip 22, which extend opposite each other inside the base 20 and elastically contact the interior and exterior sides of the door glass DG, respectively.

The base 20 comprises a base bottom 201 fixed to the bottom surface of the door sash, and an interior side wall 202 and an exterior side wall 203 extending in a substantially straight line from the interior and exterior ends of the base 201 in a bent manner, which are integrally formed. The base 201 is made of a different material from the interior seal lip 21 and the exterior seal lip 22; specifically, it is made of a thermoplastic resin that has relatively higher rigidity than the interior seal lip 21 and the exterior seal lip 22.

The interior sidewall portion 202 has an interior molding lip 204 that projects from the outer tip end in a folded manner toward the opposite side from the interior seal lip 21 and elastically contacts the flange portion 123a of the interior sidewall 123 of the door sash 12. Furthermore, the interior sidewall portion 202 has an interior retaining lip 206 on the outer surface of the base portion 201 that cooperates with the interior molding lip 204 to clamp and hold the flange portion 123a of the interior sidewall 123 of the door sash 12.

The exterior sidewall portion 203 has an exterior molding lip 205 that projects from the outer tip end in a folded manner toward the opposite side from the exterior seal lip 22 and elastically contacts the flange portion 124a of the exterior sidewall 124 of the door sash 12. Furthermore, the exterior sidewall portion 203 has an exterior retaining lip 207 on the outer surface of the base portion 201 that cooperates with the exterior molding lip 205 to clamp and hold the flange portion 124a of the exterior sidewall 124 of the door sash 12.

The interior seal lip 21 is folded back from the inside of the tip of the interior sidewall 202 and extends in a curved manner toward the base 201. The interior seal lip 21 is formed to be relatively shorter than the interior seal lip 21. On the other hand, the exterior seal lip 22 is folded back from the inside of the tip of the exterior sidewall 203 so as to face the interior seal lip 21 and extends in a generally straight line toward the base 201. When the door glass DG is lowered, the interior seal lip 21 and the exterior seal lip 22 abut and face each other as shown by the solid lines in FIG. 2. When the door glass DG is raised, they are pushed aside by the door glass DG and come into elastic contact with the inner and outer surfaces of the door glass DG as shown by the phantom lines in FIG. 2.

The inner surface of the interior sidewall 202 is provided with an auxiliary member 23 that is pushed toward the interior of the vehicle by the door glass DG when the door glass DG rises, and that elastically contacts the tip of the interior seal lip 21. This auxiliary member 23 is formed integrally with the interior sidewall 202 using a dilatant fluid, is provided continuously along the longitudinal direction of the interior sidewall 202, and is formed so that its cross section is approximately rectangular in its free state. The auxiliary member 23 can naturally adopt any cross-sectional shape depending on the specifications of the glass run 2 (e.g., the shape of the interior seal lip 21 and the reaction force characteristics desired for the auxiliary member 23). It may also be formed integrally with the interior sidewall 202 by extrusion molding, or may be fixed to the interior sidewall 202 by a fixing method such as vulcanization adhesion.

(Waist seal configuration)
FIG. 3 is a cross-sectional view showing a first embodiment of the waist seal (interior waist seal 3) according to the present invention, taken along line BB in FIG.

As shown in Figure 3, an interior waist seal 3, which corresponds to the waist seal of the present invention, is attached to the door trim 15 that covers the door inner panel 14 of the door panels that form the door waist opening 130. On the other hand, an exterior waist seal 4 that forms a pair with the interior waist seal 3 and seals between the door outer panel 16 and the door glass DG is attached to the door outer panel 16 that forms the door waist opening 130.

The interior waist seal 3 has a mounting base 30 for attachment to the door trim 15, and a pair of first and second seal lips 31 and 32 that protrude generally parallel to each other in two upper and lower stages from the mounting base 30, and these are integrally formed.

The mounting base 30 is formed in a generally plate-like shape from a synthetic resin material that is relatively hard compared to rubber, and is attached to the door trim 15 via a clip portion 301 that protrudes from the inner surface 30a, which is the side opposite the first and second seal lips 31, 32 and faces the door trim 15. Specifically, the mounting base 30 is fixed to the door trim 15 by having a hook-shaped locking projection 301a at the tip of the shaft portion 301a of the clip portion 301 engage with the edge of a locking hole (not shown) that is formed through the door trim 15, so that the door trim 15 is sandwiched between the mounting base 30 and the locking projection 301b of the clip portion 301.

The first seal lip 31 and the second seal lip 32 are both made of a relatively soft foam sponge rubber material and are provided on the outer surface 30b of the mounting base 30, each extending diagonally upward. When the door glass DG is in a lowered, free state, the first seal lip 31 and the second seal lip 32 face the first seal lip 41 and the second seal lip 42 of the exterior waist seal 4 without contact, as shown by the solid lines in FIG. 3. When the door glass DG is in a raised, deflected, deformed state, the first seal lip 31 and the second seal lip 32 are pressed by the door glass DG and come into elastic contact with the inner surface of the door glass DG, as shown by the phantom lines in FIG. 3.

Furthermore, a first auxiliary member 33 is provided on the outer surface 30b of the mounting base 30, facing the inner surface of the tip of the first seal lip 31. The first auxiliary member 33 is capable of elastically contacting the tip of the first seal lip 31, which is pressed toward the interior of the vehicle by the door glass DG when the door glass DG rises. Similarly, a second auxiliary member 34 is provided on the inner surface of the tip of the second seal lip 32, facing the inner surface of the tip of the second seal lip 32. The second auxiliary member 34 is capable of elastically contacting the tip of the second seal lip 32, which is pressed toward the interior of the vehicle by the door glass DG when the door glass DG rises.

Like the auxiliary member 23, the first auxiliary member 33 and the second auxiliary member 34 are both continuously formed along the longitudinal direction of the mounting base 30 using the same dilatant fluid and are integrally formed with the mounting base 30 by vulcanization bonding or the like. The first auxiliary member 33 and the second auxiliary member 34 are formed so that their cross sections are approximately rectangular in their free state. The first auxiliary member 33 and the second auxiliary member 34 can each have any cross-sectional shape depending on the specifications of the interior waist seal 3 (for example, the shapes of the first seal lip 31 and the second seal lip 32, and the reaction force characteristics desired for the first auxiliary member 33 and the second auxiliary member 34).

The exterior waist seal 4 has a mounting base 40 for attachment to the door outer panel 16, and a pair of first and second seal lips 41 and 42 that protrude generally parallel to each other in two upper and lower stages from the mounting base 40, and these are integrally formed.

The mounting base 40 is formed from a hard solid rubber material such as EPDM, has an inverted U-shaped cross section, and is attached to the door outer panel 16 by sandwiching the upper end of the door outer panel 16.

The first seal lip 41 and the second seal lip 42 are both extruded from a foam sponge rubber material that is softer than the solid rubber material forming the mounting base 40, and extend diagonally upward from the inner surface 40b of the mounting base 40. In addition, when the door glass DG is in a lowered, free state, the first seal lip 41 and the second seal lip 42 face the first seal lip 31 and the second seal lip 32 of the interior waist seal 3 without contact, as shown by the solid lines in FIG. 3. On the other hand, when the door glass DG is in a raised, deflected, deformed state, the first seal lip 41 and the second seal lip 42 are pressed by the door glass DG and come into elastic contact with the outer surface of the door glass DG, as shown by the phantom lines in FIG. 3.

(Effects of this embodiment)
In the conventional glass run GR, flapping of the door glass DG is suppressed by supporting the interior seal lip 21 in the following manner, for example.

Figure 15 is a cross-sectional view showing the state of a conventional glass run GR when the door glass DG vibrates, with (a) the state in which the door glass DG is located at the outermost position in the vehicle width direction, (b) the state in which the door glass DG is located at the outermost position within the allowable range R in the vehicle width direction, (c) the state in which the door glass DG is located at the center of the allowable range R in the vehicle width direction, and (d) the state in which the door glass DG is located at the innermost position in the vehicle width direction. Figure 16 is a graph showing the reaction force characteristics of a conventional glass run GR with an auxiliary member 26 added, with point a representing the state in Figure 15(a), point b representing the state in Figure 15(b), point c representing the state in Figure 15(c), and point d representing the state in Figure 15(d). The allowable range R shown in Figure 16 indicates the range within which variation in the door glass DG can be tolerated when the door glass DG is raised and lowered, including manufacturing and installation errors of the door glass DG. Furthermore, the solid line L1 in Figure 16 shows the reaction force characteristics of the interior seal lip 21 when the auxiliary member 26 is added, and the imaginary line L2 shows the reaction force characteristics of the interior seal lip 21 when the auxiliary member 26 is not added.

In conventional glass run GRs, as one way of suppressing fluttering of the door glass DG, as shown in Figure 15, an auxiliary member 26 made of a sponge material is provided on the inner surface of the interior side wall portion 202 of the vehicle. The auxiliary member 26 elastically contacts the inner surface of the tip of the interior seal lip 21, which is pressed toward the interior of the vehicle by the door glass DG when the door glass DG rises, and provides auxiliary support for the sliding contact of the interior seal lip 21 with the door glass DG.

In this configuration, the addition of the auxiliary member 26 causes the reaction force of the interior seal lip 21 to increase gradually due to the reaction force of the interior seal lip 21 alone until the interior seal lip 21 contacts the sub-lip 27 (points a to b in Figure 16). After the interior seal lip 21 contacts the auxiliary member 26 (points b to d in Figure 16), the reaction force F of the interior seal lip 21 increases significantly due to the combined force of the interior seal lip 21 and the auxiliary member 26. In this way, the addition of the auxiliary member 26 brings forward the timing at which the reaction force F of the interior seal lip 21 increases compared to when the auxiliary member 26 is not added, making it possible to quickly suppress fluttering of the door glass DG from a state in which it is located within the allowable fluctuation range R.

However, on the other hand, the addition of the sponge-made auxiliary member 26 increases the reaction force F of the interior seal lip 21 when the door glass DG is positioned within the allowable fluctuation range R (see the hatched area H in Figure 16). For this reason, when the position of the door glass DG in the vehicle width direction varies due to, for example, variations in the dimensions of the vehicle or door panel, the increased reaction force F of the auxiliary member 26 causes excessive sliding resistance of the door glass DG, reducing the ability of the door glass DG to be raised or lowered, leaving room for improvement.

Figure 17 is a cross-sectional view showing the state of a conventional glass run GR when the door glass DG vibrates, with (a) the state when the door glass DG is located at the outermost position in the vehicle width direction, (b) the state when the door glass DG is located at the center of the allowable range R in the vehicle width direction, (c) the state when the door glass DG is located inside the allowable range R in the vehicle width direction, and (d) the state when the door glass DG is located at the innermost position in the vehicle width direction. Figure 18 is a graph showing the reaction force characteristics of a conventional glass run GR with a sub-lip 27 added, with point a representing the state in Figure 17(a), point b representing the state in Figure 17(b), point c representing the state in Figure 17(c), and point d representing the state in Figure 17(d). The allowable range R shown in Figure 18 indicates the range within which variation in the door glass DG can be tolerated during vertical movement, including manufacturing and installation errors of the door glass DG. Furthermore, the solid line L1 in Figure 18 shows the reaction force characteristics of the interior seal lip 21 when the sub-lip 27 is added, and the imaginary line L2 shows the reaction force characteristics of the interior seal lip 21 when the sub-lip 27 is not added.

In addition, in conventional glass run GRs, as another method of suppressing fluttering of the door glass DG, as shown in Figure 17, a sub-lip 27 is provided on the inner surface of the interior side wall portion 202 of the vehicle, which elastically contacts the inner surface of the tip of the interior seal lip 21, which is pressed toward the interior of the vehicle by the door glass DG when the door glass DG rises, to provide auxiliary support for the sliding contact of the interior seal lip 21 with the door glass DG.

With this configuration, the addition of the sub-lip 27 causes the reaction force F of the interior seal lip 21 to increase gradually due to the reaction force F of the interior seal lip 21 alone until the interior seal lip 21 abuts against the sub-lip 27 (points a to b in Figure 18). After the interior seal lip 21 abuts against the sub-lip 27, the reaction force F of the interior seal lip 21 increases by one level due to the sub-lip 27 until the sub-lip 27 abuts against the interior side wall portion 202 (points b to c in Figure 18). After the sub-lip 27 abuts against the interior side wall portion 202 (points c to d in Figure 18), the reaction force F of the interior seal lip 21 increases by another level due to the resultant force of the interior seal lip 21 and the sub-lip 27. In this way, by adding the sub-lip 27, the timing of the increase in the reaction force F of the interior seal lip 21 is accelerated compared to when the sub-lip 27 is not added, making it possible to quickly suppress fluttering of the door glass DG from a state in which the door glass DG is located within the allowable fluctuation range R. Moreover, with this configuration, the reaction force characteristics of the door glass DG increase in two stages, making it possible to suppress the increase in the reaction force F of the interior seal lip 21 compared to when the auxiliary member 26 is added.

However, on the other hand, the addition of the sub-lip 27 results in a not inconsiderable increase in the reaction force F of the interior seal lip 21 when the door glass DG is positioned within the allowable range R (see the hatched area H in Figure 18). Therefore, even in this configuration, when the position of the door glass DG in the vehicle width direction varies due to, for example, variations in the dimensions of the vehicle or door panel, the increased reaction force F of the sub-lip 27 increases the sliding resistance of the door glass DG, resulting in a not inconsiderable decrease in the ability of the door glass DG to be raised or lowered, leaving room for improvement.

Figure 4 is a cross-sectional view showing the state of the glass run GR according to this embodiment when the door glass DG vibrates, with (a) showing the state in which the door glass DG is positioned at the outermost position in the vehicle width direction, (b) showing the state in which the door glass DG is positioned at the center of the allowable range R in the vehicle width direction, (c) showing the state in which the door glass DG is positioned at the innermost position within the allowable range R in the vehicle width direction, and (d) showing the state in which the door glass DG is positioned at the innermost position in the vehicle width direction. Figure 5 is a graph showing the reaction force characteristics of the glass run GR according to this embodiment, with point a representing the state in Figure 4(a), point b representing the state in Figure 4(b), point c representing the state in Figure 4(c), and point d representing the state in Figure 4(d). The allowable range R shown in Figure 5 indicates the range within which variations in the door glass DG can be tolerated during vertical movement, including manufacturing and installation errors of the door glass DG. In addition, the solid line L1 in Figure 5 shows the reaction force characteristics of the interior seal lip 21 according to this embodiment, and the imaginary line L2 shows the reaction force characteristics of the interior seal lip 21 without the auxiliary member 23. Figure 6 is a graph showing the amplitude and damping characteristics of the glass run GR shown in Figure 2. Note that the solid line L1 in Figure 6 shows the damping characteristics of the interior seal lip 21 according to this embodiment, and the imaginary line L2 shows the damping characteristics of the interior seal lip 21 without the auxiliary member 23.

As shown in Figure 4, the glass run GR in this embodiment supports the door glass DG with an auxiliary member 23 formed from a dilatant fluid. Therefore, as shown in Figure 5, within the allowable range R of variation due to vehicle variability (points a to c in Figure 4), the dilatant fluid that makes up the auxiliary member 23 flexibly deforms, eliminating the risk of excessively increasing the sliding resistance of the door glass DG. This ensures smooth movement of the door glass DG up and down.

On the other hand, when a large (fast) input is applied that causes the displacement of the door glass DG to exceed the allowable fluctuation range R (point d in Figure 4), the dilatant fluid that makes up the auxiliary member 23 momentarily hardens, instantaneously increasing the reaction force F of the interior seal lip 21. As a result, as shown in Figure 6, the glass run GR according to this embodiment, indicated by the solid line L1, can reduce the vibration (amplitude) of the door glass DG by the difference Wx between the amplitude W1 of L1 and the amplitude W2 of L2, compared to the conventional glass run GR, indicated by the imaginary line L2. Furthermore, by reducing the amplitude W1, the convergence time T1 of the amplitude W1 can also be shortened by the difference Tx between the convergence time T1 of L1 and the convergence time T2 of L2.

As described above, the glass run GR according to this embodiment uses the auxiliary member 23 made of dilatant fluid to ensure smooth lifting and lowering of the door glass DG within the allowable fluctuation range R, while reducing and quickly damping the vibration (amplitude) of the door glass DG in response to large (fast) inputs that exceed the allowable fluctuation range R.

Furthermore, in this embodiment, as shown in Figure 4, an auxiliary member 23 is provided on the inner surface of the interior side wall portion 202 and is configured to abut against the tip end of the interior seal lip 21 when the interior seal lip 21 is deflected and deformed toward the interior of the vehicle.

As a result, when the interior seal lip 21 is positioned on the exterior side of the vehicle, the interior seal lip 21 does not come into contact with the auxiliary member 23. In other words, in this embodiment, the interior seal lip 21 only comes into contact with the auxiliary member 23 when it is pressed toward the interior side of the vehicle by a predetermined amount. This makes it possible to reduce the initial reaction force of the interior seal lip 21, effectively reducing the sliding resistance of the door glass DG within the allowable fluctuation range R.

In addition, in this embodiment, the interior waist seal 3 also has auxiliary members (first and second auxiliary members 33, 34) on the outer surface 30b of the mounting base 30, which are arranged opposite the inner surfaces of the tip ends of the seal lips (first and second seal lips 31, 32) and are capable of elastically contacting the tip ends of the seal lips (first and second seal lips 31, 32).

In this manner, in this embodiment, similar to the glass run GR, auxiliary members (first and second auxiliary members 33, 34) are also provided on the interior waist seal 3. Therefore, the auxiliary member 23 made of dilatant fluid ensures smooth lifting and lowering of the door glass DG within the allowable fluctuation range R, while reducing and quickly damping the vibration (amplitude) of the door glass DG beyond the allowable fluctuation range R.

In addition, in this embodiment, multiple first and second auxiliary members 33, 34 are provided to face the first and second seal lips 31, 32, respectively, and the first and second auxiliary members 33, 34 allow adjustment of the reaction force F when each seal lip 31, 32 is deflected. Therefore, the auxiliary members 33, 34 ensure smooth lifting and lowering of the door glass DG without significantly increasing the sliding resistance of the door glass DG. Meanwhile, when an input is applied that causes the displacement of the door glass DG to exceed the allowable range R, which is the range due to vehicle variations, the dilatant fluid constituting each auxiliary member 33, 34 momentarily hardens, instantly increasing the reaction force F of each auxiliary member 33, 34. This effectively reduces and quickly damps the vibration (amplitude) of the door glass DG.

(Modification)
7 to 9 show modified examples of the first embodiment of the glass run according to the present invention. This modified example mainly changes the arrangement of the auxiliary member 23, but the other configurations are the same as those of the first embodiment. Therefore, the same components as those of the first embodiment are designated by the same reference numerals, and detailed descriptions thereof will be omitted.

(Glasslan composition)
FIG. 7 is a cross section of the vertical side portion 121 of the glass run 2 according to a modified example of the first embodiment of the present invention, taken along line AA in FIG.

As shown in FIG. 7 , in the glass run GR of this modified example, an auxiliary member 23 made of dilatant fluid and having a substantially rectangular cross section is provided on the inner surface of the interior sidewall 202 in a position where it can abut against the base of the interior seal lip 21 when the interior seal lip 21 is flexed and deformed toward the interior of the vehicle. As with the first embodiment, the specific shape of the auxiliary member 23 can of course be any cross-sectional shape depending on the specifications of the glass run 2 (e.g., the shape of the interior seal lip 21 and the reaction force characteristics desired for the auxiliary member 23). It may also be formed integrally with the interior sidewall 202 by extrusion molding, or may be fixed to the interior sidewall 202 by a fixing method such as vulcanization adhesion.

(Effects of this deformation)
8A and 8B are cross-sectional views showing the state of the glass run GR according to this modification when the door glass DG vibrates, where (a) shows the state in which the door glass DG is located at the outermost position in the vehicle width direction, (b) shows the state in which the door glass DG is located at the center of the allowable fluctuation range R in the vehicle width direction, (c) shows the state in which the door glass DG is located at the innermost position within the allowable fluctuation range R in the vehicle width direction, and (d) shows the state in which the door glass DG is located at the innermost position in the vehicle width direction. Fig. 9 shows a graph showing the reaction force characteristics of the glass run GR according to this modification, where point a indicates the state in Fig. 8A, point b indicates the state in Fig. 8B, point c indicates the state in Fig. 8C, and point d indicates the state in Fig. 8D. The allowable fluctuation range R shown in Fig. 9 indicates the range in which variations in the door glass DG can be tolerated during vertical movement, including manufacturing and installation errors of the door glass DG. In addition, the solid line L1 shown in Figure 9 indicates the reaction force characteristics of the interior seal lip 21 related to this embodiment, and the imaginary line L2 indicates the reaction force characteristics of the interior seal lip 21 in a state where the auxiliary member 23 is not added.

As shown in FIG. 8, the glass run GR according to this embodiment supports the door glass DG with an auxiliary member 23 made of a dilatant fluid. Therefore, as shown in FIG. 9, within the allowable range R of variation due to vehicle variations (points a to c in FIG. 8), the dilatant fluid constituting the auxiliary member 23 flexibly deforms, eliminating the risk of excessively increasing the sliding resistance of the door glass DG. This ensures smooth movement of the door glass DG up and down. On the other hand, in the event of a large (fast) input that causes the displacement of the door glass DG to exceed the allowable range R (point d in FIG. 8), the dilatant fluid constituting the auxiliary member 23 momentarily hardens, instantly increasing the reaction force F of the interior seal lip 21 and reducing the vibration (amplitude) of the door glass DG.

As described above, with the glass run GR of this modified example, as with the first embodiment, the auxiliary member 23 made of dilatant fluid ensures smooth lifting and lowering of the door glass DG within the allowable fluctuation range R, while reducing and quickly damping the vibration (amplitude) of the door glass DG in response to a large (fast) input that exceeds the allowable fluctuation range R.

Furthermore, in this modified example, as shown in Figure 8, an auxiliary member 23 is provided on the inner surface of the interior side wall portion 202, and is configured to abut against the base portion of the interior seal lip 21 when the interior seal lip 21 is bent and deformed toward the interior of the vehicle.

As a result, the interior seal lip 21 abuts against the auxiliary member 23 when the door glass DG is positioned at the outermost position of the vehicle, making it possible to increase the initial reaction force Fs of the interior seal lip 21. Meanwhile, the dilatant fluid that makes up the auxiliary member 23 flexibly deforms in response to small (gentle) inputs when the door glass DG moves up and down, ensuring smooth movement of the door glass DG up and down. This makes it possible to suppress the initial movement of the door glass DG when it vibrates, effectively reducing the vibration (amplitude) of the door glass DG, without sacrificing smooth movement of the door glass DG up and down.

Second Embodiment
(Glasslan composition)
10 to 13 show a second embodiment of the glass run according to the present invention. This embodiment mainly adds a sub-lip 27 and arranges an auxiliary member 23 on the sub-lip 27, but the other configurations are the same as those of the first embodiment. Therefore, the same components as those of the first embodiment are designated by the same reference numerals, and detailed descriptions thereof will be omitted.

Figure 10 shows a cross section of the vertical side portion 121 of the glass run 2 according to the second embodiment of the present invention, taken along line A-A in Figure 1.

As shown in Figure 10, the glass run GR according to this embodiment is provided with a sub-lip 27 on the inner surface of the interior side wall portion 202. This sub-lip 27 elastically contacts the inner surface of the tip of the interior seal lip 21, which is pressed toward the interior of the vehicle by the door glass DG when the door glass DG rises, thereby providing auxiliary support for the sliding contact of the interior seal lip 21 with the door glass DG.

In addition, in the glass run GR according to this embodiment, an auxiliary member 23 made of a dilatant fluid and having a substantially rectangular cross section, similar to that of the first embodiment, is provided on the outer surface of the tip of the sub-lip 27. As with the first embodiment, the specific shape of the auxiliary member 23 in this embodiment can of course be any cross-sectional shape depending on the specifications of the glass run 2 (for example, the shape of the interior seal lip 21 or the reaction force characteristics desired for the auxiliary member 23). It may also be formed integrally with the sub-lip 27 by extrusion molding, or may be fixed to the sub-lip 27 by a fixing method such as vulcanization adhesion.

(Waist seal configuration)
11 shows a second embodiment of the waist seal according to the present invention. This embodiment is different from the first embodiment in that the configuration of the mounting base 30 is changed. Therefore, the same components as those in the first embodiment are designated by the same reference numerals, and detailed descriptions thereof will be omitted.

Figure 11 is a cross-sectional view showing a second embodiment of the waist seal (interior waist seal 3) according to the present invention, taken along line B-B in Figure 1.

As shown in Figure 11, in this embodiment, the mounting base 30 of the interior waist seal 3 is made of a hard solid rubber material such as EPDM, has an inverted U-shaped cross section, and is attached to the door inner panel 14 so as to sandwich the upper end of the door inner panel 14.

In this embodiment, a hollow seal base 302 extending longitudinally is provided on the vehicle exterior side of the mounting base 30. A pair of first and second seal lips 31 and 32 are formed on the vehicle exterior side of the seal base 302, protruding generally parallel to each other in two upper and lower stages, and are integrally formed with the seal base 302. The first seal lip 31 is provided at the upper end of the inner surface of the seal base 302, and the second seal lip 32 is provided at the lower end of the inner surface of the seal base 302.

In addition, in this embodiment, a sub-lip 35, which extends upward and whose tip can elastically contact the door trim 15, is formed integrally with the seal base 302 at the outer end of the upper end of the seal base 302. In other words, the sub-lip 35 elastically contacts the door trim 15, thereby sealing the gap between the door inner panel 14 and the door trim 15.

Furthermore, in this embodiment, the first auxiliary member 33 that is capable of elastic contact with the first seal lip 31 of the first embodiment is eliminated on the vehicle exterior side of the seal base 302, and only the second auxiliary member 34 that is capable of elastic contact with the second seal lip 32 is provided. Note that, as with the first embodiment, the specific form of the second auxiliary member 34 in this embodiment can naturally adopt any cross-sectional shape depending on the specifications of the glass run 2 (for example, the shape of the interior seal lip 21 and the reaction force characteristics desired for the second auxiliary member 33). It may also be formed integrally with the seal base 302 by extrusion molding, or may be fixed to the seal base 302 by a fixing means such as vulcanization adhesion.

On the other hand, the first seal lip 31 does not require the first auxiliary member 33 and is instead configured to be able to abut against the middle portion of the sub-lip 25, which is pushed outward by the elastic contact of the door trim 15. In other words, when the door glass DG is significantly displaced inward and the first seal lip 31 is significantly deformed, such as when the door glass DG vibrates, the first seal lip 31 and the sub-lip 35 cooperate to support the door glass DG, thereby suppressing rattling of the door glass DG. In other words, to suppress vibration of the door glass DG, the interior waist seal 3 may be configured so that one of the multiple seal lips 31, 32 is supported by the sub-lip 35 and the other is supported by an auxiliary member (e.g., the second auxiliary member 34).

(Effects of this embodiment)
12A and 12B are cross-sectional views showing the state of the glass run GR according to the present embodiment when the door glass DG vibrates, with (a) showing the state in which the door glass DG is located at the outermost position in the vehicle width direction, (b) showing the state in which the door glass DG is located at the center of the allowable fluctuation range R in the vehicle width direction, (c) showing the state in which the door glass DG is located at the innermost position within the allowable fluctuation range R in the vehicle width direction, and (d) showing the state in which the door glass DG is located at the innermost position in the vehicle width direction. FIG. 13 is a graph showing the reaction force characteristics of the glass run GR according to the present embodiment, with point a representing the state in FIG. 12A, point b representing the state in FIG. 12B, point c representing the state in FIG. 12C, and point d representing the state in FIG. 12D. The allowable fluctuation range R shown in FIG. 13 indicates the range in which variations in the door glass DG can be tolerated during vertical movement, including manufacturing and installation errors of the door glass DG. Further, the solid line L1 shown in Fig. 13 indicates the reaction force characteristics of the interior seal lip 21 according to this embodiment, and the imaginary line L2 indicates the reaction force characteristics of the interior seal lip 21 in a state in which the auxiliary member 23 is not added. Fig. 14 is a graph showing the amplitude and damping characteristics of the glass run GR shown in Fig. 10. Note that the solid line L1 shown in Fig. 14 indicates the damping characteristics of the interior seal lip 21 according to this embodiment, and the imaginary line L2 indicates the damping characteristics of the interior seal lip 21 in a state in which the auxiliary member 23 is not added.

As shown in Figure 12, the glass run GR in this embodiment supports the door glass DG with an auxiliary member 23 made of the dilatant fluid that is integral with the sub-lip 27. Therefore, as shown in Figure 13, within the allowable range R of variation due to vehicle variability (points a to c in Figure 13), the dilatant fluid that makes up the auxiliary member 23 flexibly deforms, eliminating the risk of excessively increasing the sliding resistance of the door glass DG. This ensures smooth movement of the door glass DG up and down.

On the other hand, when a large (fast) input is applied that causes the displacement of the door glass DG to exceed the allowable fluctuation range R (point d in Figure 13), the sub-lip 27 flexes, increasing the reaction force F of the interior seal lip 21 (points c to e in Figure 13). After the sub-lip 27 subsequently contacts the interior sidewall portion 202, the dilatant fluid constituting the auxiliary member 23 momentarily hardens, instantly significantly increasing the reaction force F of the interior seal lip 21. As a result, as shown in Figure 14, the glass run GR according to this embodiment, indicated by the solid line L1, can reduce the vibration (amplitude) of the door glass DG by the difference Wx' between the amplitude W1 of L1 and the amplitude W2 of L2, compared to the conventional glass run GR, indicated by the imaginary line L2. Furthermore, by reducing the amplitude W1, the convergence time T1 of the amplitude W1 can also be shortened by the difference Tx' between the convergence time T1 of L1 and the convergence time T2 of L2. In particular, in this embodiment, the auxiliary member 23 is provided on the sub-lip 27, and the reaction force F of the sub-lip 27 is added to the hardening phenomenon of the auxiliary member 23, thereby improving the damping characteristics of the door glass DG compared to the first embodiment (Tx > Tx').

As described above, the glass run GR according to this embodiment also ensures smooth lifting and lowering of the door glass DG within the allowable fluctuation range R using the auxiliary member 23 made of dilatant fluid, while reducing and quickly damping the vibration (amplitude) of the door glass DG in response to large (fast) inputs that exceed the allowable fluctuation range R.

Furthermore, this embodiment further includes a sub-lip 27 that extends from the inner surface of the interior side wall portion 202 toward the inside of the base portion 20 and elastically abuts against the interior seal lip 21 when the interior seal lip 21 flexes and deforms toward the interior of the vehicle. The auxiliary member 23 is provided on the surface of the sub-lip 27 facing the interior seal lip 21 and is configured to abut against the interior seal lip 21 when the interior seal lip 21 flexes and deforms toward the interior of the vehicle.

In this way, by arranging the auxiliary member 23 on the surface of the sub-lip 27 facing the interior seal lip 21 and disposing it between the sub-lip 27 and the interior seal lip 21, it is possible to delay changes in the reaction force of the sub-lip 27. This prevents the reaction force F of the sub-lip 27 from increasing significantly within the allowable fluctuation range R, ensuring smooth movement of the door glass DG up and down.

On the other hand, if a large force is applied to the interior seal lip 21 that exceeds the allowable fluctuation range R, the dilatant fluid that makes up the auxiliary member 23 instantly hardens, and the deflection deformation of the interior seal lip 21 is transmitted directly to the sub-lip 27 via the auxiliary member 23, instantly increasing the reaction force F of the sub-lip 27 and accelerating the change in reaction force of the sub-lip 27. This reduces the vibration (amplitude) of the door glass DG and allows it to be quickly damped.

Furthermore, in this embodiment, the sub-lip 27 is provided on the base 20, so that the reaction force F can be generated by the interior seal lip 21 and the sub-lip 27. As a result, the vibration (amplitude) of the door glass DG may increase by the amount of flexural deformation of the sub-lip 27. However, the reaction force F of the sub-lip 27 acting in addition to the interior seal lip 21 can more quickly dampen and converge the vibration of the door glass DG.

The present invention is not limited to the configurations disclosed in the above embodiments, and specific details not directly related to the technical features of the present invention, such as the material and shape of the glass run GR base 20, interior seal lip 21, and exterior seal lip 22, the material and shape of the mounting base 30 and first and second seal lips 31, 32 of the interior waist seal 3, and the material and shape of the mounting base 40 and first and second seal lips 41, 42 of the exterior waist seal 4, can be freely modified within the spirit of the present invention in accordance with the specifications of the vehicle to which it is applied.

1...door 14...interior door panel 15...door trim 16...exterior door panel 2...glass run 20...base 201...base bottom 202...interior side wall portion 203...exterior side wall portion 21...interior seal lip 22...exterior seal lip 23...auxiliary member 27...sub-lip 3...interior waist seal (waist seal)
30... Mounting base 31... First seal lip 32... Second seal lip 33... First auxiliary member 34... Second auxiliary member 35... Sub-lip 4... Vehicle exterior waist seal DG... Door glass

Claims (6)

a base portion having a substantially U-shaped cross section, the base portion including an interior side wall portion and an exterior side wall portion extending from both ends of the base portion in the vehicle width direction;
an interior seal lip and an exterior seal lip extending from the tip ends of the side wall portions toward the inside of the base portion, respectively, and provided to be in sliding contact with the door glass that moves up and down inside the base portion along the longitudinal direction of the side wall portions;
an auxiliary member formed of a dilatant fluid and coming into contact with the interior seal lip when the interior seal lip is deflected and deformed toward the interior of the vehicle;
and
the auxiliary member flexibly deforms the dilatant fluid in response to an input that falls within an allowable fluctuation range, which is an allowable range for fluctuations of the door glass during lifting and lowering, thereby suppressing an increase in the reaction force of the interior seal lip, and the dilatant fluid instantly becomes rigid in response to an input that exceeds the allowable fluctuation range, thereby instantaneously increasing the reaction force of the interior seal lip.
A glass run characterized by: The glass run according to claim 1,
the auxiliary member is provided on an inner surface of the interior side wall portion and comes into contact with a leading end of the interior seal lip when the interior seal lip is deflected and deformed toward the interior of the vehicle.
A glass run characterized by: The glass run according to claim 1,
a sub-lip extending from an inner surface of the interior side wall portion toward the inside of the base portion and elastically contacting the interior seal lip when the interior seal lip is flexibly deformed toward the interior of the vehicle,
the auxiliary member is provided on a surface of the sub-lip facing the interior seal lip, and comes into contact with the interior seal lip when the interior seal lip is deflected and deformed toward the interior of the vehicle.
A glass run characterized by: The glass run according to claim 1,
the auxiliary member is provided on an inner surface of the interior side wall portion and comes into contact with a root portion of the interior seal lip when the interior seal lip is deflected and deformed toward the interior of the vehicle.
A glass run characterized by: a mounting base that is attached to an interior door panel or a door trim that covers the interior door panel;
a seal lip extending from the mounting base toward the vehicle exterior and coming into sliding contact with the door glass that moves up and down to seal between the vehicle interior door panel or the door trim and the door glass;
an auxiliary member made of a dilatant fluid, provided on the vehicle exterior side surface of the mounting base so as to face the seal lip, and coming into contact with the seal lip when the seal lip is deflected and deformed toward the vehicle interior;
and
When an input falls within an allowable fluctuation range, which is an allowable range for fluctuations of the door glass during vertical movement, the dilatant fluid flexibly deforms to suppress an increase in the reaction force of the seal lip, and when an input exceeds the allowable fluctuation range, the dilatant fluid instantly becomes rigid to instantly increase the reaction force of the seal lip.
A waist seal characterized by: 6. The waist seal of claim 5,
The seal lip is provided on a vehicle exterior side surface of the mounting base facing the door glass along a direction in which the door glass moves up and down.
a plurality of the auxiliary members are provided to face each of the seal lips, and come into contact with each of the seal lips when the seal lips are deflected and deformed toward the vehicle interior;
A waist seal characterized by: