JP3193102B2 - Automotive glass run - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided on the inner periphery of a protective frame constituting an opening in which a window glass of an automobile is arranged, and is used for sealing between the window glass and the protective frame. It is about glass run.

[0002]

2. Description of the Related Art Generally, as this kind of glass run,
One having a U-shaped main body portion having a U-shaped cross section forming a concave groove portion into which the peripheral end portion of the window glass enters, and a pair of seal lip portions protruding in opposite directions from both side ends of the main body portion. It is known (for example, see Japanese Utility Model Publication No. 3-49930). Then, the window glass is disposed between the pair of seal lip portions, and the seal lip portion is brought into contact with both surfaces of the window glass in a state where the seal lip portion is elastically pressed, thereby performing sealing.

[0003]

By the way, the seal lip is required to satisfy two performances, that is, sealing performance and operability of opening and closing a window glass. However, when the pressing force of the seal lip portion on the window glass is relatively large, the sealing property is improved, but on the contrary, the sliding resistance of the window glass on the seal lip portion is increased and the opening / closing operability is reduced. . Conversely, when the pressing force is relatively small, the opening / closing operability is improved, but conversely, the sealing performance is reduced. That is, the above two performances are conflicting requirements, and a conventional glass run did not always satisfy the two performances at the same time.

On the other hand, the above-mentioned sealing property is required mainly for enhancing the hermeticity of the vehicle interior when the window glass is closed and for blocking noise outside the vehicle. It is required.

[0005] The present invention has been made in view of such circumstances, and an object of the present invention is to achieve both sealing performance and open / close operability.

[0006]

In order to achieve the above object, the invention according to claim 1 is provided along an inner side of a protective frame constituting an opening which is opened and closed by a window glass, It is assumed that a cross-sectional shape is formed in a U-shape from a groove bottom continuously surrounding the peripheral end of the window glass and a pair of opposing pieces sandwiching the window glass from both inside and outside surfaces. A convex portion protruding from the groove bottom to the side of the peripheral edge of the window glass, a first hollow chamber which is a closed space defined inside the convex portion, and opposing each other from the opposing pieces.
And a pair of lip portions projecting in
A pair of second hollow chambers, which are enclosed spaces defined inside.
And formed at a portion between each of the lip portions and the convex portion.
A communication hole for communicating the second hollow chamber and the first hollow chamber with each other;
And a fluid sealed in the first hollow chamber and the pair of second hollow chambers , and a portion between the first hollow chamber and the side of the projection near the periphery of the window glass and each of the first hollow chamber. Above the lip
Each part between the inner and outer surface side of the window glass and each of the second hollow chambers
Each position is constituted by an elastic thin film. A horizontal position glass run portion arranged on the closing side in the opening and closing direction of the window glass and a vertical position glass run portion arranged in the opening and closing direction of the window glass are integrally formed, and the first hollow chamber is formed. The horizontal position glass run portion side and the vertical position glass run portion side communicate with each other. A state in which, when the window glass is closed, the peripheral edge of the window glass presses the elastic thin film of the convex portion in the horizontal glass run section and cuts into the first hollow chamber side. Position so that The vertical position glass run portion, in the opening and closing operation state of the window glass, the elastic thin film of the convex portion in the vertical position glass run portion is close to the peripheral end of the window glass and the fluid is in an equilibrium state, and In the closed state of the window glass, the elastic thin film of the convex portion in the vertical position glass run portion protrudes due to forced flow of the fluid from the horizontal position glass run portion side to the vertical position glass run portion side, and the window is opened. Position so that it is in close contact with the glass . Then, attach both lip parts to the window
The phase of the elastic thin film on both lips in the open / close operation of the lath
In the state where the facing distance is almost the same as the thickness of the window glass,
When the fluid inside is in equilibrium and the window glass is closed
In the state, from the first hollow chamber through each of the communication holes
Due to the forced flow of the fluid into each of the second hollow chambers,
The elastic thin film of the window part protrudes to the window glass side and the window
It is configured to be in close contact with the inner and outer surfaces of the glass .

According to a second aspect of the present invention, in the first aspect of the invention, a fluid supply means for supplying or discharging a fluid to the first and second hollow chambers, and an opening and closing means for detecting a closed state of the window glass. State detecting means. Then, the fluid supply means, said first and second hollow chamber in opening and closing state of the window glass equilibrated or negative pressure state, and the second in the closed state of the window glass
Switching to supply or discharge and operation are performed so that the first and second hollow chambers are in a positive pressure state and the elastic thin film is in close contact with the window glass.

[0008]

According to the above-mentioned structure, according to the first aspect of the present invention,
In the open / close operation state of the windowpane, the sliding resistance from the glass run acts on the windowpane because the convex portion and each lip portion of the vertical glass run portion on both sides do not contact the both side ends of the windowpane. Without this, the opening and closing operation of the window glass becomes smooth. When the windowpane is closed by the closing operation, the tip end portion of the windowpane digs into the elastic thin film of the convex portion of the horizontal glass run by the closing operation force . For this reason, the elastic thin film of the convex portion is in close contact with the tip portion of the window glass, and the fluid in the first hollow chamber of the horizontal glass run portion is forcibly flown into the first hollow chamber on the vertical glass run portion side. As a result, the elastic thin film of the convex portion of the vertical glass run portion protrudes and adheres to both side edges of the window glass. Further, the fluid in the first hollow chamber
Is forced to flow into each second hollow chamber through each communication hole.
As a result, the elastic thin film of the lip protrudes and
Adhere to both inside and outside. That is, in the closed state, the elastic thin film of the convex portion supported by the pressure of the sealing air in the pressurized state is continuously pressed against the peripheral edge of the window glass to seal , and the elastic thin film of the lip portion is sealed. Is above the window glass
Are pressed against both the inside and outside surfaces to seal.

According to the second aspect of the present invention ,
In addition to the operation according to the first aspect of the present invention, in the open / close operation state, the first and second hollow chambers are brought into an equilibrium state or a negative pressure state by discharging the fluid by the fluid supply means, and each elastic thin film is opened. The state is surely separated from the glass, so that the opening and closing operation of the window glass becomes smooth. Also,
In the closed state, the first and second hollow chambers are brought into a positive pressure state by the supply of the fluid by the fluid supply means, and the respective elastic thin films are securely pressed against the window glass.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a case where a glass run according to a first embodiment of the present invention is applied to a window glass of an automobile door.
Reference numeral 1 denotes a window glass provided so as to be able to move up and down in a substantially vertical direction, 3 denotes a protective frame constituting an opening 3a opened and closed by the window glass 1, and 4 denotes an interposition between the protective frame 3 and the window glass 1. It is a rubber glass run mounted.

The window glass 1 is formed in a substantially trapezoidal shape, and has an upper end portion 1a having a substantially horizontal upper portion which is a front end portion in a closing direction and an inclined portion which is inclined downward and forward, and a substantially vertical front end which is an opening and closing direction. A portion 1b and a rear end 1c are provided.

The protective frame 3 is provided at the upper end 1 of the window glass 1.
The protective frame 3 is formed integrally with the door 2 so as to surround the window portion a and the rear end portion 1c.

The glass run 4 includes a horizontal position glass run portion 4a facing the upper end portion 1a of the window glass 1, a front vertical position glass run portion 4b facing the front end portion 1b of the window glass 1, and A rear vertical glass run portion 4c opposed to the rear end portion 1c of the window glass 1 is integrally formed,
This is attached along the entirety of the sliding contact portion extending downward from the inner peripheral side of the protective frame 3 and the front and rear positions thereof.

As shown in detail in FIGS. 2 and 3, the glass run 4 has a U-shaped cross section formed by a pair of opposed pieces 6 and 6 opposed to the groove bottom 5. Yes,
The groove bottom part 5 is a peripheral end part 1a, 1b, 1 of the window glass 1.
In the state opposite to c, it is held by a holding frame (not shown) inside the protection frame 3 and the door 2.

On the inner side of the groove bottom 5, a projection 7 projecting in a direction opposite to the peripheral ends 1a, 1b, 1c of the window glass 1 is formed by integral molding. Further, a hollow chamber 8 is formed inside the projection 7 so as to be partitioned by the side of the window glass 1 and the rubber thin film 7a. The hollow chamber 8 is formed continuously from the horizontal position glass run portion 4a to the vertical position glass run portions 4b, 4c. The hollow space 8 is closed at each lower end position of the vertical position glass run portions 4b, 4c to form a closed space. Make up. Thus, air, which is a fluid, is sealed in the hollow chamber 8, and the convex portion 7 projects in a predetermined amount in an equilibrium state (FIGS. 2 and 3).
(Indicated by a solid line in FIG. 2).

Relatively thin seal lip pieces 9, 9, which are opposed to each other and extend obliquely toward the groove bottom 5, are formed integrally with each other at the front ends of the two-phase opposing pieces 6, 6.
Each seal lip piece 9 comes into contact with the window glass 1 in a state where a relatively small elastic repulsion force acts according to the thickness of each seal lip piece 9.

The glass run 4 is disposed so as to have a predetermined positional relationship with the window glass 1. That is, in the open / close operation state of the window glass 1 (the state shown by the solid line in FIG. 3), the vertical glass run portions 4b, 4c
A slight gap is formed between each of the projections 7 and the front end 1b and the rear end 1c of the window glass 1 so that the sealed air is in an equilibrium state. That is, the window glass 1
In the open / close operation state, the front end 1b and the rear end 1c do not come into contact with the respective convex portions 7 of the vertical glass run portions 4b, 4c. Further, a position in which the upper end portion 1a of the window glass 1 in the closed state (the state indicated by the dashed line in FIG. 2) is cut by a predetermined amount above the lower surface position of the convex portion 7 of the horizontal position glass run portion 4a, that is, rubber. The thin film 7a is crushed upward to stop at a position where the volume of the hollow chamber 8 is reduced by a predetermined amount from the above-mentioned equilibrium state. That is, in the closed state of the window glass 1, the upper end portion 1a of the window glass 1 is in close contact with the rubber thin film 7a of the horizontal glass run portion 4a, and the inside of each hollow chamber 8 of the horizontal glass run portion 4a. The air flows toward the respective hollow chambers 8 of the vertical glass run portions 4b and 4c, and the rubber thin films 7a of the vertical glass run portions 4b and 4c protrude as shown by a dashed line in FIG. The glass 1 is in close contact with the front end 1b and the rear end 1c.

Next, the operation and effect of the first embodiment will be described.

When the window glass 1 is in the opening / closing operation state, since the convex portion 7 of the groove bottom 5 does not contact the front end portion 1b and the rear end portion 1c of the window glass 1, each of the seal lip pieces 9 is opened and closed. Since only a relatively small sliding resistance force acts on the window glass 1, the opening and closing operation of the window glass 1 can be performed smoothly.

When the windowpane 1 is raised and closed, the upper end portion 1a of the windowpane 1 is supported by the enclosed air in the hollow chamber 8 in the horizontal glass run section 4a by the above-mentioned operation force. Bites into 7a. For this reason,
The rubber thin film 7a adheres tightly so as to wrap the upper end 1a, and the air in the hollow chamber 8 is forcibly flown into the hollow chambers 8 on the side of the vertical glass run sections 4b and 4c. The rubber thin films 7a of the portions 4b and 4c protrude and the front end 1b and the rear end 1 of the window glass 1 are formed.
Adhere to wrap c. Therefore, in the closed state, the rubber thin film 7a supported by the pressure of the sealed air in the pressurized state is continuously pressed against the peripheral ends 1a, 1b, 1c of the window glass 1, so that the window glass in the closed state is provided. Compared to the case where 1 is simply sealed only by the elastic restoring force of rubber,
The seal can be uniformly and reliably sealed, and the inside and outside of the vehicle compartment can be shut off liquid-tight and air-tight.

FIGS. 4 to 7 show a glass run for an automobile according to a second embodiment of the present invention. Reference numeral 10 denotes a glass run attached along the inner peripheral side of the protective frame 3 and a holding frame (not shown). .

As in the first embodiment, the glass run 10 includes a horizontal position glass run portion 10a and a pair of vertical position glass run portions 10b and 10c continuous with the front and rear portions of the horizontal position glass run portion 10a. Are integrally formed of rubber (see FIG. 1). And the above glass run 1
0 is a pair of opposing pieces 12, opposing the groove bottom 11;
12, the cross-sectional shape is formed in a U-shape, and the groove bottom 11 is formed at the peripheral ends 1 a, 1 b, 1 c of the window glass 1.
And are arranged in a state facing each other.

The glass run 10 is formed at a position inside the groove bottom 11 in a direction opposite to the peripheral ends 1a, 1b, 1c, and is formed inside the protrusion 13. The first hollow chamber 14 and the two-phase facing piece 12,
A pair of lip portions 15 protruding in opposite directions to the inner and outer surfaces of the window glass 1 at respective opposed inner positions of 12;
15, a pair of second hollow chambers 16, 16 formed inside each of the lip portions 15, and a side opposed to a tip end of each of the lip portions 15 and opposite to the groove bottom portion 11. And a pair of convex pieces 18, 18 which protrude and come into contact with the inner and outer surfaces of the window glass 1. The first hollow chamber 14 is formed by partitioning a peripheral end portion 1a, 1b, 1c of the window glass 1 by a rubber thin film 13a. Each of the second hollow chambers 16 is formed inside and outside the window glass 1. Are formed so as to be divided by the rubber thin film 15a.

The first hollow chamber 14 and the pair of second hollow chambers 16, 16 are formed continuously from the horizontal glass run section 10a to the vertical glass run sections 10b, 10c. A lid piece 17 is attached to each lower end 10d of the portions 10b and 10c by means such as adhesion or the like, and is closed. As a result, the first hollow chamber 14 and the pair of second hollow chambers 1 forming a closed space are formed.
Air is sealed inside each of the projections 6 and 16, and
3 and a state in which each lip portion 15 is projected by a predetermined amount, that is, an equilibrium state in which both lip portions 15 and 15 are separated from each other by an opposing interval slightly larger than the thickness of the window glass 1 (see solid lines in FIGS. 4 and 5). State shown).

Further, the horizontal glass run portion 10a is provided with a plurality of first hollow chambers 1 at predetermined intervals.
A pair of communication holes 19, 19 for communicating the fourth and the second hollow chambers 16 with each other are formed, respectively.

The glass run 10 has a relationship between the convex portions 13 of the glass run portions 10a, 10b, 10c in the horizontal and vertical positions and the peripheral ends 1a, 1b, 1c of the window glass 1. It is arranged so as to have the same positional relationship with the window glass 1 as in the first embodiment. That is, in the open / close operation state of the window glass 1, the front end portion 1b and the rear end portion 1c do not come into contact with the respective convex portions 13 of the vertical glass run portions 10b, 10c. When the window glass 1 is closed, the upper end 1 of the window glass 1 is closed.
a is a position where the rubber thin film 13a of each convex portion 13 of the horizontal position glass run portion 10a is crushed upward against the internal air pressure to reduce the volume of the first hollow chamber 14 by a predetermined amount from the equilibrium state. To stop at.

Since the other components such as the glass run 10 are the same as those of the first embodiment, the same members are denoted by the same reference numerals and the description thereof will be omitted.

In the case of the second embodiment, when the window glass 1 is in the open / close operation state, the vertical glass run 10b,
Each convex piece 18 of 10 c is merely in contact with the front end 1 b and the rear end 1 c of the window glass 1, and the convex 13
Since the lip portions 15 are not in contact with each other, the opening and closing operation of the window glass 1 can be easily performed.

When the window glass 1 is raised and closed, the upper end portion 1a cuts into the convex portion 13 of the horizontal glass run portion 10a.
Are tightly wrapped around the upper end 1a. Then, the air in the first hollow chamber 14 of the laterally-positioned glass run portion 10a is pushed by the upper end portion 1a, and the air in the
At the same time as flowing into the hollow chamber 16, the vertical glass run 1
It flows into each first hollow chamber 14 and each second hollow chamber 16 on the 0b, 10c side. As a result, the horizontal position glass run section 1
At 0a, as shown in FIG. 6, each of the second hollow chambers 16 expands, and the rubber thin film 15a protrudes and is brought into close contact with the upper end 1a of the window glass 1 while pressing its inner and outer surfaces.
Further, in the vertical glass run portions 10b and 10c, the first hollow chambers 14 and the second hollow chambers 16 are enlarged, and the rubber thin films 13a and 15a protrude in the same manner as described above, so that the windowpane 1 is opened. The front end portion 1b and the rear end portion 1c are pressed against each other and the inner and outer surfaces are pressed against each other. As a result, the closed window glass 1 can be uniformly and reliably sealed by the pressure of the pressurized sealed air, and the interior and exterior of the vehicle can be liquid-tightly and air-tightly sealed. Can be shut off.

In this case, as compared with the first embodiment, the sealing performance is improved by the rubber thin films 15a, 15a being continuously pressed on the inner and outer surfaces of the peripheral ends 1a, 1b, 1c of the window glass 1. be able to.

FIG. 8 shows a glass run according to a third embodiment of the present invention. Reference numeral 20 denotes a connecting pipe for connecting the first hollow chamber 14 and the second hollow chamber 16 of the glass run 10 and the reservoir tank 21 to each other; Is an air supply pump interposed in the connection pipe 20 for controlling the supply and discharge of air, and 23 is an open / closed state detecting means for detecting a closed state of the window glass 1 and outputting a detection signal to the air supply pump 22. . The connection pipe 20, the reservoir tank 21, and the air supply pump 22 constitute a fluid supply unit 24 that supplies or discharges air to the first hollow chamber 14 or the like.

The air supply pump 22 switches between an air supply operation state and an air supply operation state based on a detection signal from the closed state detection means 23. That is, when the window glass 1 is closed, the air supply pump 22 is set to the supply operation state, and a predetermined amount of air is supplied from the reservoir tank 21 to the first hollow chamber 14 and each second hollow chamber 16 in an equilibrium state. Supplied. Further, when the window glass 1 is opened and closed, a predetermined amount of air is discharged to the reservoir tank 21 until the first hollow chamber 14 and the second hollow chamber 16 return to the equilibrium state when the window glass 1 is in the discharging operation state. Is done. By the supply of the air, the first hollow chamber 14 and the pair of second hollow chambers 16, 16 are respectively enlarged, and the rubber thin films 13a, 15a protrude. Rim 1 of
The sealing is performed by continuously pressing the end faces a, 1b, and 1c and the inner and outer faces. In addition, the first hollow chamber 14 and the pair of second hollow chambers 16, 16 return to an equilibrium state due to the discharge of the air, and the rubber thin films 13a,
15a is separated from the window glass 1.

Since the other configuration of the glass run 10 is the same as that of the first embodiment, the same members are denoted by the same reference numerals and the description thereof will be omitted.

In the case of the third embodiment, in the open / close operation state, the first hollow chamber 14 and the second hollow chambers 16 are in an equilibrium state, and the rubber thin films 13a, 15a
Is separated from the peripheral edges 1a, 1b, 1c of the window glass 1, and the opening and closing operation of the window glass 1 is smoothly performed because the sliding resistance from the rubber thin films 13a, 15a does not act. It can be carried out. In the closed state,
The first hollow chamber 14 and the second hollow chambers 16 are put in a positive pressure state, and the rubber thin films 13a, 15a are securely pressed to the end surfaces of the peripheral ends 1a, 1b, 1c of the window glass 1 and both the inner and outer surfaces. In this state, the window glass 1 can be sealed to reliably block the inside and outside of the vehicle compartment. That is, while the second embodiment performs the forced flow of the air in the first hollow chamber 14 by the operation force of the window glass 1 to the closed state, the third embodiment switches the window glass 1 to the closed state. Since the first hollow chamber 14 and each of the second hollow chambers 16 are positively pressurized or depressurized in addition to the operating force, the sealing performance in the closed state and the operability in the open / close operation state are improved. Can be more reliably achieved as compared with the second embodiment.

The present invention is not limited to the above-described first to third embodiments, but includes various other modifications. That is, in the first to third embodiments, the case where the glass runs 4 and 10 are used for sealing the window glass 1 of the door 2 is shown. However, the present invention is not limited to this. It may be applied to a window glass that is fitted and opened and closed.

In the first to third embodiments, the glass runs 4, 10 are formed from rubber, but may be formed from synthetic resin.

In the first and second embodiments, the window glass 1 may be either manually opened or closed or a so-called power window.

In the first to third embodiments, air is sealed in the hollow chambers 8, 14, and 16. However, the present invention is not limited to this, and any fluid such as a liquid may be used.

In the first embodiment, the seal lip pieces 9 are formed on the pair of opposed pieces 6, 6, respectively.
The seal lip piece 9 is not essential, and may be omitted. Also in this case, the closed window glass 1 can be reliably sealed by the sealed air in the hollow chamber 8 and the rubber thin film 7a constituting the hollow chamber 8, and the glass run from the glass run during the opening / closing operation can be ensured. Since the sliding resistance does not act on the window glass 1, a smooth opening / closing operation can be performed.

The equilibrium state of the hollow chambers 8, 14, 16 in the first and second embodiments may be set to a state slightly pressurized from the atmospheric pressure state in addition to the atmospheric pressure state. In this case, the rubber thin films 7a, 13
The degree of adhesion of the a and 15a to the window glass 1 is increased, and the sealing performance can be improved.

In the third embodiment, the fluid supply means 24 for taking in and out of the air is replaced by the glass run 10 in the second embodiment.
However, the present invention is not limited to this. For example, it may be provided in the glass run 4 in the first embodiment. In this case as well, the hollow chamber 8 is positively pressurized and depressurized to reduce the rubber thin film 7a.
Can be obtained in the same manner as in the third embodiment.

In the third embodiment, each of the hollow chambers 14, 16
Is in a positive pressure state when the windowpane 1 is closed, and is in an equilibrium state in the open / close operation state. However, the present invention is not limited to this. You may. In this case, the rubber thin films 13a, 15a of the vertical glass run portions 10b, 10c in the open / close operation state.
Can be more reliably separated from the front end portion 1b and the rear end portion 1c of the window glass 1, and the opening and closing operability can be more reliably improved.

In the embodiment described above, the hollow chamber is provided over the entire opening and closing movement range of the window glass 1. However, the present invention is not limited to this. For example, the hollow chamber is provided only on the inner peripheral side of the protection frame 3. You may.

[0045]

As described above, according to the automotive glass run of the first aspect of the present invention, when the window glass is opened and closed, the convex portion formed at the bottom of the groove of the vertical glass run portion has the window. Since there is no contact with the glass, the opening / closing operation of the window glass can be performed easily because the sliding resistance does not act. On the other hand, in the closed state of the window glass, its closing operation force by the forced flow of the first hollow chamber of the vertical position the glass run portion of the first hollow chamber of the fluid in the lateral position the glass run portion, and a lateral position the glass run portion Flow in the first hollow chamber
Due to the forced flow of the body into the second hollow chamber, the end face of the peripheral end of the window glass and the three places on the inner and outer surfaces are formed with the convex part and the lip part.
The sealing can be continuously performed by each elastic thin film . Thereby, in addition to the end surface of the peripheral end of the window glass,
The inner and outer surfaces of the peripheral end are also sealed by the elastic thin film of the lip.
The seal more securely.
In addition, it is possible to achieve both open / close operability and sealability. In addition, since the seal keeps the elastic thin film in close contact with the window glass due to the pressure of the sealed fluid in the pressurized state, it is necessary to seal more uniformly and securely than when simply sealing with the compressive restoring force of rubber. Can be.

Further, such an effect can be obtained by sealing a fluid.
This can be achieved by a simple configuration in which the first and second hollow chambers are formed and positioned at a predetermined position with respect to the window glass.

According to the second aspect of the present invention, the above-mentioned claim is provided.
In addition to the effect of the first aspect, the first and second hollow chambers can be positively pressurized or depressurized by controlling the supply or discharge of the fluid by the fluid supply means, whereby the seal in the closed state can be obtained. The improvement of the operability and the improvement of the operability in the opening / closing operation state can be more reliably achieved as compared with the first aspect of the present invention. With the above configuration, it is possible to cut off external noise and running noise, and also to reliably press the periphery of the window glass with air pressure, thereby absorbing high frequency vibration of the window glass and preventing chattering noise. It is possible to prevent suction of the window glass.

[Brief description of the drawings]

FIG. 1 is a partial side view of an automobile in which an embodiment of the present invention is applied to a window glass of a door.

FIG. 2 is an enlarged cross-sectional view of the opening and closing operation state of the first embodiment along the line AA in FIG. 1;

FIG. 3 is an enlarged cross-sectional view of the opening and closing operation state of the first embodiment along line BB in FIG. 1;

FIG. 4 is a diagram corresponding to FIG. 2 of a second embodiment.

FIG. 5 is an enlarged sectional view of the second embodiment taken along line CC in FIG. 1;

FIG. 6 is a diagram corresponding to FIG. 4 in a closed state.

FIG. 7 is a perspective view of an end of a glass run according to a second embodiment.

FIG. 8 is a configuration diagram of a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Window glass 1a Upper end of window glass (peripheral end of window glass) 1b, 1c Front and rear end of window glass (peripheral end of window glass) 3 Protective frame 4,10 Glass run 4a, 10a Horizontal position glass run 4b, 10b Front vertical glass run section 4c, 10c Rear vertical glass run section 5, 11 Groove bottom 6, 12 Phase opposing piece 7, 13, Convex section 7a Rubber thin film (elastic thin film) 8 Hollow chamber 13a Rubber thin film ( Elastic thin film) 14 first hollow chamber 15 lip 15a rubber thin film (elastic thin film) 16 second hollow chamber 19 communication hole 23 open / closed state detecting means 24 fluid supply means

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60J 10/04

Claims (2)

(57) [Claims] 1. A groove provided at an inner portion of a protective frame constituting an opening that is opened and closed by a window glass and continuously surrounding a peripheral edge of the window glass, and the inside and outside of the window glass. In an automotive glass run having a U-shaped cross-sectional shape formed by a pair of opposing pieces sandwiched from both sides, a convex protruding from the groove bottom to a side of a peripheral end of the window glass; A first hollow chamber, which is a closed space partitioned and formed inside the portion, and a pair of a pair of protruding portions facing each other from the respective opposing pieces.
A lip portion and a sealed space defined inside each of the lip portions.
A pair of second cavities, and a portion formed between the lip portion and the convex portion, and
A communication hole for communicating the second hollow chamber and the first hollow chamber with each other, and a fluid sealed in the first hollow chamber and the pair of second hollow chambers; Between the first side of the window and the first hollow chamber and inside and outside of the window glass of each lip portion.
Each site between the side and the respective second cavity surfaces are respectively made of an elastic thin film, and the lateral position the glass run portion disposed to the opening and closing direction of the closing side of the windowpane, the windowpane A vertical glass run portion arranged in the opening and closing direction is integrally formed, and the first hollow chamber is communicated with the horizontal position glass run portion side and the vertical position glass run portion side, When the window glass is in the closed state, the peripheral end of the window glass is positioned at the side position glass run section.
Are positioned so as to press the elastic thin film of the convex portion into the first hollow chamber side by pressing the elastic thin film, and the vertical position glass run portion is configured to open and close the window glass in the vertical position. The elastic thin film of the convex portion in the portion is close to the peripheral end portion of the window glass and the fluid is in an equilibrium state, and in the closed state of the window glass, the vertical position glass from the horizontal position glass run portion side of the fluid. put into the vertical position the glass run portion by forced flow of the run portion
That are positioned so that a state of close contact with the window glass elastically thin protrusions out conceive, the both lip, both in opening and closing operation state of the window glass
The opposite interval of the elastic thin film at the lip is the thickness of the window glass
The fluid inside is in an equilibrium state when it is almost the same as
And, in the closed state of the window glass, the first hollow chamber
Of the fluid to each of the second hollow chambers through each of the communication holes.
The elastic thin film of each of the lips is reduced by the window glass
State that protrudes to the side and adheres to the inner and outer surfaces of the window glass
A glass run for an automobile, characterized in that it is configured to be: 2. The apparatus according to claim 1, further comprising a fluid supply means for supplying or discharging fluid to the first and second hollow chambers, and an open / closed state detection means for detecting a closed state of the window glass. In the state of opening and closing the glass, the first and
The second cavity is in equilibrium or negative pressure, and
In the closed state of the windowpane, the first and second hollow chambers are placed in a positive pressure state, and the switching to the supply or discharge and the operation are performed such that the elastic thin film is in close contact with the windowpane. The glass run for an automobile according to claim 1, wherein the glass run is performed.