JP2010095149A - Sealing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing device capable of surely performing sealing, while reducing reaction acting on a panel without requiring alignment in a process. <P>SOLUTION: This sealing device 1 includes a mounting part 3 which has a U-shaped cross section, is fitted to an end edge 6a and is mounted to cover both of one side face of a wall part 6 and the other side face, a first sealing part 2 which is provided integrally with the mounting part 3 to prevent the advance of fluid by elastic contact with an adjacent member, and a second sealing part 7 which is provided in the mounting part 3 to prevent the advance of fluid by deforming by elastic contact with the wall part 6. The second sealing part 7 has a deformed part 7a in close contact with the end edge 6a by being elastically deformed by being pressed with the end edge 6a when the mounting part 3 is mounted on the wall part 6, and a pair of displacement parts 7b which are provided integrally with the deformed part 7a, displace to be in contact with both side faces from a position separated from both side faces of the wall part 6 according to the deformation of the deformed part 7a and hold both the side faces. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sealing device, and more particularly to a sealing device for waterproofing a vehicle.

  Sealing devices for preventing moisture such as rain from entering the inside from the outside are provided on the outer wall of the vehicle door, the building, or the wall that separates the outside from the inside such as windows and doors. As an example of such a sealing device, a weather strip attached to a vehicle door is known. The weather strip is attached to the flange portion at the door periphery or the door opening periphery, and is provided for the purpose of preventing water from entering from the outside of the vehicle or improving sound insulation.

  FIG. 4 shows an example of a conventional weather strip. The weather strip 10 is made of EPDM (ethylene-propylene-diene copolymer) solid rubber. The weather strip 10 has a shielding part 11 at the upper part and a mounting part 12 at the lower part. 13 is provided. A plurality of lip portions 14 are formed inside the attachment portion 12, and the attachment portions 12 are fixed to the panel 15 by deformation of each lip portion 14 when attached to the panel 15. In addition, a sealant 16 is provided on the inner upper portion of the mounting portion 12 to be bonded to the top of the panel 15 for sealing. Examples of the sealant 16 include butyl rubber-based non-drying types and sponge rubber.

  However, the non-drying type sealant 16 adheres to the panel 15 when the weather strip 10 is removed from the panel 15, and the sealant 16 attached when the weather strip 10 is attached to the panel 15 again is attached to the panel 15 and the lip 14. And the frictional force is lowered, and the weather strip 10 is unstably attached. Further, the sealant 16 made of sponge rubber has a problem that the insertion load at the time of mounting becomes remarkably large and the workability of mounting is lowered. In order to solve these problems, for example, “Patent Document 1” discloses a technique of filling and foaming a resin emulsion mixed with a foaming agent as the sealant 16 in the mounting portion 12.

JP 2007-230499 A

  In any of the above-described conventional technology and the technology disclosed in “Patent Document 1”, since the resin material is filled in the mounting portion 12 as the sealant 16, the weather strip 10 is attached to the panel 15. The reaction force due to the compression of the sealant 16 always acts on the panel 15. When the reaction force acts on the panel 15, there is a problem that it causes a sealing failure and a panel deformation, resulting in a malfunction. Further, if the mounting position of the weather strip 10 is deviated with respect to the panel 15, there is a problem that the top of the panel 15 and the sealant 16 are not joined cleanly and the sealing performance is deteriorated. Furthermore, a step of filling the sealant 16 inside the weather strip 10 is required.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a sealing device that solves the above-described problems and can reliably perform sealing while reducing the reaction force acting on the panel without requiring alignment in one step. To do.

  The invention according to claim 1 is attached to a wall part that separates the outside and the inside, and a fluid enters from one side of the wall part to the other side by closing a gap between the wall part and an adjacent member. A sealing device for preventing this, and an attachment portion having a U-shaped cross section that is fitted to an edge of the wall portion and attached so as to cover both one side surface and the other side surface of the wall portion; A first seal portion provided integrally with the mounting portion and elastically contacting the adjacent member to prevent the ingress of fluid; and deformed by elastically contacting the wall portion provided inside the mounting portion. A second seal portion that prevents fluid from entering, and the second seal portion is elastically deformed by being pressed by the edge portion when the attachment portion is attached to the wall portion. A deformable portion in close contact with the edge, and integrally with the deformable portion Vignetting and having a pair of displacement portions displaced to sandwich the both sides so as to contact with the sides from a position spaced apart the both sides of the wall portion with the deformation of the deformable portion.

  According to a second aspect of the present invention, in the sealing device according to the first aspect of the invention, the edge portion is further accompanied by the deformation of the deformation portion due to a frictional force generated when the displacement portion contacts both side surfaces of the wall portion. It is characterized by reducing the reaction force acting on the.

  According to a third aspect of the present invention, in the sealing device according to the first or second aspect, the deformable portion further has a hollow portion.

  According to a fourth aspect of the present invention, in the sealing device according to any one of the first to third aspects, the mounting portion is further deformed by elastic contact with both side surfaces of the wall portion on the inner side surface thereof. It has the lip | rip part which prevents the penetration | invasion of fluid by this.

  According to a fifth aspect of the present invention, in the sealing device according to any one of the first to fourth aspects, the wall portion is a flange portion on the periphery of the door of the vehicle or the periphery of the door opening, and is attached to the flange portion. It functions as a weather strip.

  According to the present invention, fluid intrusion into the mounting portion is prevented by the lip portion and the displacement portion, and occurs when the deformed portion is restored by the frictional force generated when the displacement portion contacts both side surfaces of the wall surface. Reaction force can be reduced, and the occurrence of problems such as defective sealing and panel deformation can be reduced.

  FIG. 1 shows an example of a weather strip as a sealing device adopting an embodiment of the present invention. As shown in FIG. 5, the weather strip 1 has a flange portion 6 for closing a gap between a door 8 of a vehicle 9 as an adjacent member and a flange portion 6 as a wall portion provided at a peripheral edge of a door opening on the vehicle body side. Is provided over the entire circumference.

  In FIG. 1, a weather strip 1 is formed by extrusion molding with EPDM (ethylene-propylene-diene copolymer) solid rubber, and a hollow first seal portion 2 that is elastically deformed by contacting the peripheral portion of the door 8 at the upper portion. An attachment portion 3 is provided, and an iron cored bar 4 is provided inside the attachment portion 3. A plurality of lip portions 5 are formed on the inside of the attachment portion 3, and when the lip portions 5 are elastically deformed when attached to the flange portions 6 as shown in FIG. The mounting portion 3 is fixed to the flange portion 6 while being pressed against the surface, and intrusion of fluid from below is prevented.

  A second seal portion 7 is provided on the inner upper portion of the attachment portion 3 to be bonded to the end edge portion 6a of the flange portion 6 for sealing. The second seal portion 7 integrally formed with the attachment portion 3 has two deformation portions 7b that are integrally formed to extend from both sides of the deformation portion 7a and the deformation portion 7a so as to face each other. is doing. Each displacement portion 7b is curved toward the flange portion 6 side, and the tip portion thereof is formed thicker than other portions. When the displacement portion 7b occupies the press contact position described later, both sides of the flange portion 6 are formed. The contact area of the tip with respect to the surface is formed to be large. A hollow portion 7c is provided between the deformable portion 7a and the ceiling portion of the attachment portion 3, and the deformable portion 7a and each displacement portion 7b are configured to be elastically deformable. The deformable portion 7a is recessed when an upward external force is applied, and is restored to the position shown in FIG. 1 when the external force is released, and each displacement portion 7b is shown in FIG. 1 as the deformable portion 7a is deformed. As shown in FIG. 2, the initial position separated from the both side surfaces of the flange portion 6 and the press contact position that presses the both side surfaces of the flange portion 6 are selectively occupied.

  With the above-described configuration, when the weather strip 1 is moved downward from the state shown in FIG. 1 to be attached to the flange portion 6, each lip portion 5 is elastically deformed and pressed against both side surfaces of the flange portion 6. At the same time, the edge portion 6a comes into contact with the deformable portion 7a to deform the deformable portion 7a upward. Each displacement portion 7b is pulled toward the flange portion 6 side in accordance with the deformation of the deformation portion 7a, so that the displacement portion 7b is displaced from the initial position to the pressure contact position. Then, both side surfaces of the flange portion 6 are sandwiched.

  As a result, each lip portion 5 and each displacement portion 7b prevent fluid from entering the mounting portion 3, and the deformed portion is caused by the frictional force generated when each displacement portion 7b contacts both side surfaces of the flange portion 6. The reaction force generated when 7a is restored can be reduced, and the occurrence of defects such as defective sealing and panel deformation can be reduced. Further, even when the weather strip 1 is attached to the flange portion 6 even if the attachment position is slightly deviated, the alignment is performed when the edge portion 6a contacts the deformed portion 7a, thereby simplifying the work. A reliable sealing property can be obtained. Moreover, since the 2nd seal | sticker part 7 is integrally formed with the attaching part 3, the weather strip 1 can be attached in 1 process. Further, since the second seal portion 7 has the hollow portion 7c, the deformation portion 7a can be deformed with a small force, and the reaction force can be further reduced.

  In the said embodiment, although the weather strip 1 which has the 2nd seal | sticker part 7 provided with the deformation | transformation part 7a of the shape which protruded below as a sealing device is shown in FIG. 1, the shape of the 2nd seal | sticker part 7 is shown. For example, as shown in FIG. 3 (a), it has a flat deformed portion 7d, as shown in FIG. 3 (b), it has a deformed portion 7e protruding upward, and a hollow portion. You may use what does not have 7c. Moreover, although the weather strip 1 for vehicles was shown as a sealing apparatus in the said embodiment, the sealing apparatus which can apply this invention is not restricted to a weather strip, It can apply also to other examples, such as a door and a window of a building. is there.

It is a schematic front view of the weather strip as a sealing device which employ | adopted one Embodiment of this invention. It is a schematic front view at the time of panel attachment of the weather strip used for one Embodiment of this invention. It is the schematic which shows the seal | sticker part used for the modification of one Embodiment of this invention. It is a schematic front view which shows the conventional sealing device. 1 is a schematic perspective view of a vehicle including a weather strip that employs an embodiment of the present invention.

Explanation of symbols

1 Sealing device (weather strip)
2 First seal part 3 Mounting part 5 Lip part 6 Wall part (flange part)
6a End edge portion 7 Second seal portion 7a, 7d, 7e Deformation portion 7b Displacement portion 7c Hollow portion 8 Adjacent member (door)

Claims (5)

A sealing device that is attached to a wall part that separates the outside and the inside, and that blocks a gap between the wall part and an adjacent member and prevents fluid from entering from one side of the wall part to the other side. And
A fitting portion having a U-shaped cross section that is fitted to the edge portion of the wall portion and is attached so as to cover both the one side surface and the other side surface of the wall portion; A first seal portion that elastically contacts a member that prevents fluid from entering, and a first seal portion that is provided inside the mounting portion and that elastically contacts and deforms the wall portion to prevent fluid from entering. A second sealing portion, wherein the second sealing portion is elastically deformed by being pressed by the edge portion when the attachment portion is attached to the wall portion, and is in close contact with the edge portion; And a pair of displacement portions that are provided integrally with the deformation portion and are displaced so as to contact the both side surfaces from positions separated from both side surfaces of the wall portion as the deformation portions are deformed, and sandwich the both side surfaces. A sealing device characterized by that. The sealing device according to claim 1,
The sealing device according to claim 1, wherein a reaction force acting on the end edge portion due to deformation of the deformation portion is reduced by a frictional force generated when the displacement portion contacts both side surfaces of the wall portion. The sealing device according to claim 1 or 2,
The sealing device, wherein the deformable portion has a hollow portion. The sealing device according to any one of claims 1 to 3,
The sealing device according to claim 1, wherein the mounting portion has a lip portion that prevents intrusion of fluid by elastically contacting and deforming both side surfaces of the wall portion on an inner side surface thereof. The sealing device according to any one of claims 1 to 4,
The said wall part is a flange part of the door periphery of a vehicle, or a door opening part periphery, and functions as a weather strip attached to the said flange part.

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