JP2000289465A - Door sealing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent air from being sealed between double seal members and being compressed to improve closing performance of a door when the door is closed. SOLUTION: A subseal 42 is fixed on a longitudinal wall part 40A of a door trim 40 through a channel 44, and the subseal 42 is constituted by an elastic material. A cross sectional shape of the subseal 42 when viewed from forward and backward directions of a vehicle body is V shape, and one piece like V shape is a mounting part 42A and the other piece is a seal part 42B in contact with a scuff plate 30. A notch 42C is formed in a boundary between the mounting part 42A and the seal part 42B of the subseal 42, and the seal part 42B is elastically deformed in the direction of the mounting part 42A centered on the notch 42C by pneumatic pressure when a door is closed to form an air escape passage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door seal structure, and more particularly, to a door seal structure for a side door of a vehicle such as an automobile.

[0002]

2. Description of the Related Art Conventionally, as an example of a seal structure around a door of a vehicle such as an automobile, there is one disclosed in Japanese Utility Model Laid-Open No. 30-52230.

[0003] As shown in FIG.
In the seal structure around the door No. 2230, the weather strip 74 attached to the lower wall portion 72A of the door inner panel 72 of the side door 70 is in contact with the vertical wall portion 78A of the rocker outer panel 78 constituting the rocker 76. .
Further, a seal portion 8 formed at the lower end of the door trim 80 attached to the door inner panel 72 of the side door 70 is provided.
0A is in contact with a scuff plate 82 disposed above the rocker 76. As described above, the gap between the side door 70 and the rocker 76 is sealed at two positions offset in the vehicle width direction, thereby improving sound insulation.

[0004]

However, in the seal structure around the door, the weather strip 74 has a hollow cross section, and the seal portion 80A formed at the lower end of the door trim 80 also has a hollow cross section. For this reason, when closing the side door 70, air is trapped in the space 84 formed between the weather strip 74 and the seal portion 80A, and there is no escape place. As a result, the air is sealed in the space 84 and is compressed to a high pressure (high compression).
This became a resistance, and it was difficult to close the side door 70.

In view of the above facts, the present invention can prevent the air from being sealed between the double sealing members and being highly compressed when closing the door, and can improve the closing performance of the door. The purpose is to obtain a seal around the door.

[0006]

According to the present invention, there is provided a door surrounding seal structure for closing a door opening formed in a vehicle body, wherein the door is closed and the vehicle is closed. A first seal member that seals the exterior side and the periphery of the door; and a second seal member that seals the interior side of the door opening and the periphery of the door when the door is closed. At least one of the first seal member and the second seal member is deformed by air pressure when the door is closed to form an escape path for air.

Therefore, when the pressure of the air confined between the first seal member and the second seal member when the door is closed becomes larger than a predetermined value, the air pressure causes the first seal member and the second seal member to be closed. At least one is deformed, forming an air escape. As a result, since the air is not trapped between the first seal member and the second seal member to be in a highly compressed state, it is possible to prevent the door from becoming difficult to close.

According to a second aspect of the present invention, there is provided a door surrounding seal structure for closing a door opening formed in a vehicle body,
A first sealing member that seals the outside of the vehicle compartment of the door opening and the periphery of the door when the door is closed, and a vehicle interior side portion of the door opening and the periphery of the door that closes the door when the door is closed; And a second seal member for sealing the second member.
It is characterized in that the seal member is deformed by air pressure when closing the door to form an air escape path.

Therefore, when the pressure of the air confined between the first seal member and the second seal member when the door is closed becomes greater than a predetermined value, the second seal member is deformed by this air pressure, and the air escapes. To form As a result, since the air is not trapped between the first seal member and the second seal member to be in a highly compressed state, it is possible to prevent the door from becoming difficult to close.

According to a third aspect of the present invention, in the door surrounding seal structure according to the second aspect, the second seal member is an elastic member having a V-shaped cross section fixed to the door side, and closes the door. At this time, the air pressure is elastically deformed in a direction in which the V-shaped cross section is further bent, and is separated from the body side.

Therefore, when the pressure of the air confined between the first seal member and the second seal member at the time of closing the door becomes larger than a predetermined value, the cross section V
The second seal member made of a U-shaped elastic material is further elastically deformed in a bending direction and separates from the body side to form an air escape path. As a result, since the air is not trapped between the first seal member and the second seal member to be in a highly compressed state, it is possible to prevent the door from becoming difficult to close. Also,
Since the second seal member can be made of an elastic material having a V-shaped cross section, the structure is simple.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a door surrounding seal structure according to the present invention will be described with reference to FIGS.

In the drawings, an arrow FR indicates a vehicle forward direction, an arrow UP indicates a vehicle upward direction, and an arrow IN indicates a vehicle width inside direction.

As shown in FIG. 6, a double seal structure is provided between each of the front and rear door openings of the vehicle 10 and the front side door 12 and the rear side door 14 to improve the sound insulation in the passenger compartment. Have been.

As shown in FIG. 1, the rear side door 14
At the lower part of the door inner panel 16
A is provided with a weather strip 18 as a first seal member. The weather strip 18 has a well-known structure having a pipe-shaped seal portion 18A. When the rear side door 14 is closed (the state shown in FIG. 1), the seal portion 18A extends in the vehicle longitudinal direction. The upper end 20A of the vehicle 20 is in close contact with the upper end 20A.

The rocker 19 includes a rocker outer panel 20 and a rocker inner panel 22 which form a closed section 24 extending in the vehicle longitudinal direction. The closed section 24 extends along the rocker outer panel 20 in the closed section 24. A rock reinforcement 26 is provided.

An outer edge 28A of the floor mat 28 in the vehicle width direction is fixed to the upper wall 22A and the vertical wall 22B of the rocker inner panel 22. Further, a scuff plate 30 is covered on the upper wall portion 20B of the rocker outer panel 20 and the upper wall portion 22A of the rocker inner panel 22.
The outer end 30A of the vehicle compartment of the scuff plate 30 is in contact with the upper wall 20B of the rocker outer panel 20,
The vehicle interior side end 30B of the scuff plate 30 is in contact with the vehicle width direction outer edge 28A of the floor mat 28.
A vertical wall portion 30C is formed in the middle portion of the scuff plate 30 in the vehicle width direction, and the rocker outer panel 20 and the rocker inner panel 2 are provided on the vehicle interior side of the vertical wall portion 30C.
2. The joint 36 of the rock reinforcement 26 is erected.

A door trim 40 is provided on the vehicle interior side of the door inner panel 16. At the lower end of the door trim 40, a vertical wall portion 40A extending in the front-rear direction of the door is formed. A flange 40B is formed on the lower edge of the vertical wall portion 40A toward the door inner panel 16, and the flange 40B contacts the lower edge of the vertical wall portion 16B of the door inner panel 16. I have.

As shown in FIG. 2, a vertical seal 40A of the door trim 40 has a sub-seal 4 as a second seal member.
2 is fixed via a channel 44 as an attachment member, and the sub-seal 42 is made of an elastic material such as rubber or resin. The cross-sectional shape of the sub-seal 42 when viewed from the front-rear direction of the vehicle is V-shaped. One V-shaped piece is an attachment portion 42A, and the other is a seal portion 42B that contacts the scuff plate 30.

The mounting portion 42A of the sub-seal 42 is fixed to the channel 44 by fitting or caulking. The channel 44 is fixed to the vertical wall portion 40A of the door trim 40 by a locking claw (not shown) or an adhesive. I have. A notch 42C is formed at the boundary between the mounting portion 42A and the sealing portion 42B of the sub-seal 42, and the air pressure at the time of closing the door causes the sealing portion 42B to start from the notch 42C in the direction of the mounting portion 42A (see FIG. 2). It is elastically deformed in a direction to bend in the direction of arrow A) and forms an escape route for air.

The air (arrow W in FIG. 5) trapped between the weather strip 18 and the sub-seal 42 is
When the pressure of the air trapped between the weather strip 18 and the sub-seal 42 becomes equal to or lower than a predetermined value, the sub-seal 4
The second seal portion 42B returns by elastic force in the direction away from the mounting portion 42A (the direction of arrow B in FIG. 2), and comes into contact with the vertical wall portion 30C of the scuff plate 30.

As shown in FIG. 3, the rear side door 14
In the rear portion, the sub-seal 46 has a well-known structure having a seal portion 46A in the same pipe shape as the weather strip 18. The mounting portion 46B of the sub-seal 46 is fixed to the flange 50A of the quarter panel 50, and comes into close contact with the vertical wall portion 40A of the door trim 40 when the rear side door 14 is closed (the state of FIG. 3). I have.

Although not shown, a sub-seal having a pipe-shaped seal portion is also used at the front and upper portions of the rear side door 14, similarly to FIG.

Next, the operation of the present embodiment will be described.

In the present embodiment, when the rear side door 14 is closed, the seal portion 18A of the weather strip 18 is in close contact with the vehicle width direction outer upper end portion 20A of the rocker outer panel 20, and the seal portion 42B of the sub-seal 42 is attached to the scuff plate 30. Abut. At this time, when the pressure of the air confined between the weather strip 18 and the sub-seal 42 becomes larger than a predetermined value, the air pressure causes the sealing portion 4 of the sub-seal 42 made of an elastic material having a V-shaped cross section.
2B is elastically deformed from the notch 42C in a direction of bending in the direction of the mounting portion 42A (the direction of arrow A in FIG. 2).
Therefore, the seal portion 42B of the sub-seal 42 is separated from the scuff plate 30 to be in a state shown in FIG.

As a result, as shown in FIG. 5, the air (arrow W in FIG. 5) trapped between the weather strip 18 and the sub-seal 42 can escape to the vehicle interior through the air escape path 52. it can. For this reason, since air is not trapped between the weather strip 18 and the sub-seal 42 to be in a high compression state, the rear side door 14
Can be prevented from becoming difficult to close. Further, since the sub-seal 42 can be made of an elastic material having a V-shaped cross section, the structure is simple.

The air (arrow W in FIG. 5) trapped between the weather strip 18 and the sub-seal 42 is
When the pressure of the air trapped between the weather strip 18 and the sub-seal 42 becomes equal to or less than a predetermined value, the seal portion 42B of the sub-seal 42 separates from the mounting portion 42A when the air escapes to the vehicle interior through the air escape path 52. It returns to the direction of the arrow B in FIG. 2 by the elastic force and contacts the vertical wall portion 30C of the scuff plate 30. As a result, road noise and the like can be reliably isolated.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included within the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, in the present embodiment, the sub-seal 42 as the second seal member is fixed to the vertical wall portion 40A of the door trim 40 via the channel 44 as an attachment member, but the sub-seal 42 is directly fixed to the vertical wall portion 40A of the door trim 40. It is good also as a structure which performs. Further, the sub seal 42 may be integrally formed with the door trim 40. In addition, sub-seal 4
The second mounting portion 42A may be fixed to the scuff plate 30, and the seal portion 42B of the sub-seal 42 may be brought into contact with the door trim 40.

Further, in the present embodiment, the structure of the present invention is applied to the portion of the rear side door 14 facing the rocker.
The present invention is also applicable to a portion opposed to a portion such as a quarter panel and a roof side rail of No. 4. Further, the door surrounding seal structure of the present invention is applicable to other doors such as the front side door 12 in addition to the rear side door 14.

[0030]

According to the first aspect of the present invention, there is provided a door surrounding seal structure for closing a door opening formed in a vehicle body, wherein the door opening is provided in a state where the door is closed and the outside of the cabin and around the door. And a second seal member for sealing the side of the door opening around the door and the interior of the vehicle with the door closed, the first seal member and the second seal member. At least one of them is deformed by the air pressure at the time of closing the door to form an air escape path, so that when the door is closed, air is sealed between the double sealing materials and can be prevented from being highly compressed. Has an excellent effect that the closing performance can be improved.

According to a second aspect of the present invention, there is provided a door surrounding seal structure for closing a door opening formed in a vehicle body,
A first seal member that seals the outside of the vehicle compartment at the door opening and around the door when the door is closed, and a second seal member that seals the interior of the vehicle compartment at the door opening and around the door when the door is closed.
A sealing member, wherein the second sealing member is deformed by air pressure when the door is closed to form an escape path for air, so that when the door is closed, air is sealed between the double sealing members and high compression is achieved. And the door closing performance can be improved.

According to a third aspect of the present invention, in the door surrounding seal structure according to the second aspect, the second seal member is an elastic member having a V-shaped cross section fixed to the door side, and is used when closing the door. Due to the air pressure, the V-shaped cross section is further elastically deformed in the direction in which it is bent and separated from the body side. Therefore, when the door is closed with a simple configuration, air is sealed between the double sealing materials and is highly compressed. And the door closing performance can be improved.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view taken along line 1-1 of FIG.

FIG. 2 is a perspective view of a main part of a door surrounding seal structure according to an embodiment of the present invention, which is a partial cross-sectional view as seen from obliquely inside the front of the vehicle.

FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 6;

FIG. 4 is a cross-sectional view corresponding to FIG. 1 and illustrating the operation of the door surrounding seal structure according to the embodiment of the present invention.

FIG. 5 is a perspective view corresponding to FIG. 2 and illustrating the operation of the door surrounding seal structure according to the embodiment of the present invention.

FIG. 6 is a side view showing a vehicle to which the door surrounding seal structure according to one embodiment of the present invention is applied.

FIG. 7 is a cross-sectional view showing a door surrounding seal structure according to a conventional embodiment.

[Explanation of symbols]

 Reference Signs List 14 rear side door 16 door inner panel 18 weather strip (first seal member) 20 rocker outer panel 30 scuff plate 30C vertical wall portion of scuff plate 40 door trim 40A vertical wall portion of door trim 42 sub seal (second seal member) 42A mounting portion of sub seal 42B Seal part of sub seal 42C Notch of sub seal 44 Channel

Claims (3)

[Claims] 1. A door surrounding sealing structure for closing a door opening formed in a vehicle body, wherein a first sealing member seals an outer side portion of the door opening and a periphery of the door when the door is closed. A seal member, and a second seal member for sealing a side of the door around the door when the door is closed, and the first seal member and the second seal member. Characterized in that at least one of the door seals is deformed by air pressure when the door is closed to form an air escape path. 2. A door surrounding sealing structure for closing a door opening formed in a vehicle body, wherein a first sealing member seals an outer portion of the door opening and a periphery of the door with the door closed. A sealing member, and a second sealing member for sealing a side of the door opening around the interior of the vehicle and the door when the door is closed, and an air pressure when the second sealing member closes the door. A seal structure around the door, which is deformed by the air to form an escape path for air. 3. The second sealing member is an elastic member having a V-shaped section fixed to the door side, and is elastically deformed in a direction in which the V-shaped section is further bent by air pressure when the door is closed. The seal structure around a door according to claim 2, wherein the seal structure is separated from the body side.