JP5181636B2 - Weather strip and method of forming the same - Google Patents

Weather strip and method of forming the same Download PDF

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Publication number
JP5181636B2
JP5181636B2 JP2007300427A JP2007300427A JP5181636B2 JP 5181636 B2 JP5181636 B2 JP 5181636B2 JP 2007300427 A JP2007300427 A JP 2007300427A JP 2007300427 A JP2007300427 A JP 2007300427A JP 5181636 B2 JP5181636 B2 JP 5181636B2
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portion
skin layer
part
hollow seal
weather strip
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JP2009126226A (en
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明世 河口
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トヨタ車体株式会社
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Description

  The present invention is a belt-shaped member that is mounted on a flange plate portion positioned at the periphery of an entrance / exit formed in a vehicle body and seals between a slide door that opens and closes the entrance / exit and the periphery of the entrance / exit of the body. The present invention relates to a weather strip and a forming method thereof.

A technique relating to the above-described weather strip is described in Patent Document 1.
As shown in FIG. 8, the weather strip 100 includes a grip portion 102 and a hollow seal portion 103. The grip portion 102 is formed on a flange plate portion 104 positioned at the periphery of the entrance of the body 101 using a groove 102 m. It is configured to be fitted. Further, when the slide door 105 is closed, the hollow seal portion 103 is pressed and deformed by the slide door 105 and seals between the slide door 105 and the periphery of the entrance / exit of the body 101. Here, a stopper member 107 is attached to the hollow seal portion 103 on the front side surface (the surface opposite to the side on which the slide door 105 abuts). Thereby, when the hollow seal part 103 is pressed and deform | transformed from the back by the slide door 105, it becomes difficult to fall forward. As a result, the sliding door 105 and the hollow seal portion 103 come into good surface contact, and a sealing failure between the sliding door 105 and the periphery of the entrance / exit of the body 101 can be prevented.

Japanese Patent Laid-Open No. 10-6773

In the weather strip 100 described above, as shown in FIG. 8, the hollow seal portion 103 does not fall forward when the slide door 105 is closed, so that the hollow seal portion 103 can be seen from the vehicle interior side. (See white arrow (line of sight)). In general, since the grip portion 102 of the weather strip 100 constitutes a wall design in the vehicle interior, the surface of the grip portion 102 is covered with a skin layer having the same color as a trim (not shown) that is an interior decoration wall material. ing. On the other hand, since the hollow seal portion 103 places importance on the sealing property and the decorative property is hardly considered, the ground color (black) of the rubber material appears as it is.
For this reason, when the slide door 105 is closed, an uncomfortable feeling due to a color difference occurs between the wall surface in the passenger compartment and the hollow seal portion 103 of the weather strip 100. That is, there is a problem that the sense of unity of the colors in the passenger compartment is lost, the appearance is lowered, and the sense of quality is impaired.

  The present invention has been made to solve the above-mentioned problems, and the problem to be solved by the present invention is that the weather strip does not impair the sense of unity of the interior colors of the vehicle, and the appearance of the interior of the vehicle is improved. It is to improve.

The above-described problems are solved by the inventions of the claims.
The invention according to claim 1 is attached to a flange plate portion positioned at the periphery of the entrance / exit formed in the body of the vehicle, and seals between a slide door that opens and closes the entrance / exit and the periphery of the entrance / exit of the body. A grip-shaped weather strip, which is configured to be fitted to the flange plate portion of the body using a groove formed on the outer peripheral side, and includes a grip portion having a skin layer constituting a wall surface design in a vehicle interior; It is formed in a cylindrical shape and is arranged on the outer side in the vehicle width direction than the grip portion. When the slide door is closed, the slide door is pressed and deformed, and the slide door and the entrance of the body and a hollow seal portion to seal between the periphery, the hollow seal portion, connected to the seal body portion to deform by being pressed by the slide door, the seal body portion to the outer surface of the grip That the front connecting portion, and a rear coupling portion, when the sliding door is closed, is laminated on the exposed part visible from the vehicle interior side, the skin layer constituting a vehicle interior wall design with the epidermal layer of the grip portion The front connection part, the rear connection part and the skin layer of the hollow seal part are made of a rubber material having the same hardness as the grip part, and the seal body part of the hollow seal part is The rubber material is softer than the grip portion .

According to the present invention, on the surface of the hollow seal portion of the weather strip, the skin layer that forms the decorative wall surface in the vehicle interior together with the skin layer of the grip portion on the exposed portion that can be seen from the vehicle interior side when the sliding door is closed. Are stacked. For this reason, the exposed portion of the hollow seal portion that is located in the gap between the slide door and the grip portion of the weather strip and is visible from the vehicle interior side does not cause a sense of incongruity on the wall surface in the vehicle interior. That is, the sense of unity in the passenger compartment is not impaired, the appearance of the passenger compartment is improved, and a high-class feeling can be achieved.
Moreover, since the front side connection part, the rear side connection part, and the skin layer of the hollow seal part are made of a rubber material having the same hardness as the grip part, when the slide door is closed, it was pushed by the slide door. The seal body portion of the hollow seal portion is supported by a hard rubber material and is difficult to fall in the pressing direction. For this reason, in order to prevent the sealing failure between a slide door and a body, it becomes unnecessary to provide a stopper member conventionally.

According to the invention of claim 2, the skin layer of the hollow seal portion is set to have the same color as the skin layer of the grip portion.
For this reason, it is possible to unify indoor colors.
According to invention of Claim 3, the skin layer laminated | stacked on a grip part and a hollow seal part is comprised by the colored rubber material.
For this reason, the skin layer and the hollow seal portion can be integrated, and even if the hollow seal portion is deformed as the slide door is opened and closed, there occurs a problem that the skin layer is peeled off from the surface of the hollow seal portion over time. Absent.

According to the invention of claim 4, after the hard rubber material molding step, a hard rubber material molding step of molding the front connection portion and the rear connection portion of the grip portion and the hollow seal portion around the core material by extrusion molding. Also, a soft rubber material molding step for molding the seal body portion of the hollow seal portion by extrusion molding, and a skin for molding the skin layer of the hard rubber material by extrusion molding after the soft rubber material molding step. And a layer forming step.
As described above, the extrusion layer facilitates the formation of the skin layer due to the configuration in which the portion made of the hard rubber material, the portion made of the soft rubber material, and the skin layer are sequentially formed.

  According to the present invention, the weather strip does not impair the sense of unity in the vehicle compartment, so that the appearance of the vehicle compartment is improved and a high-class feeling can be achieved.

[Embodiment 1]
Hereinafter, a weather strip and a forming method thereof according to Embodiment 1 of the present invention will be described with reference to FIGS. Here, FIG. 1 and FIG. 2 are plan sectional views and general views of the weather strip according to this embodiment, and FIG. 3 to FIG. 5 are perspective views and plan views showing the function of the weather strip. FIG. 6 is a schematic view showing a weatherstrip forming method and the like, and FIG. 7 is a front view showing the entrance / exit of the body of the vehicle to which the weatherstrip is attached from the vehicle interior side.
In addition, front and rear, right and left and up and down in the figure correspond to front and rear, right and left and up and down of the vehicle.

<About the structure outline of the vehicle body 2 and the sliding door 4>
Prior to the description of the weather strip 10, the structure of the rear periphery of the entrance / exit 20 of the vehicle body 2 and the rear structure of the slide door 4 will be described with reference to FIGS.
As shown in FIG. 7, the entrance / exit 20 of the body 2 is formed in a substantially square shape, and an outer panel 21 (see FIG. 4) constituting the surface of the body 2 and an inner panel 22 that supports the outer panel 21 from the inside. The flange plate part 23 is comprised by the periphery of the said entrance / exit 20 at the junction part. A weather strip 10 to be described later is attached to the flange plate portion 23.
As shown in FIG. 4, the outer panel 21 includes a design surface 21 e that constitutes the surface of the body 2, and a recess surface 21 b that is recessed with respect to the design surface 21 e and is located around the flange plate portion 23. I have. Then, the slide door 4 in a state in which the entrance / exit 20 is closed is housed in the recessed surface 21 b of the outer panel 21. That is, the design surface 41 e of the slide door 4 is continuous with the design surface 21 e of the body 2 in a state where the slide door 4 closes the entrance 20.
The inner panel 22 has a surface on the vehicle interior side covered with a resin trim T2 which is a decorative material.

  The slide door 4 includes an outer panel 41 having a design surface 41e and an inner panel 42, and the inner panel 42 has a convex shape that is substantially equal to the recessed surface 21b of the outer panel 21 of the body 2, as shown in FIG. It is molded into. Further, a seal plane 43 is formed on the surface of the inner panel 42 of the slide door 4 (surface on the vehicle interior side) so as to surround the entrance 20 at a position corresponding to the weather strip 10. Further, the surface of the inner panel 42 is covered with a resin trim T4, which is a decorative material, in a range surrounded by the seal plane 43.

<About Weather Strip 10>
As shown in FIGS. 3 to 5, the weather strip 10 is mounted on a flange plate portion 23 positioned at the periphery of the entrance 20 of the body 2, and the entrance / exit of the body 2 with the slide door 4 that opens and closes the entrance 20. It is a belt-like member that seals between the periphery of the mouth 20. As shown in FIG. 2, the weather strip 10 is set to a length dimension substantially equal to the length dimension in the circumferential direction of the flange plate portion 23 so that the flange plate portion 23 can be covered over the entire circumference. Yes.
The weather strip 10 includes a grip portion 12 and a hollow seal portion 14 as shown in a cross-sectional view of FIG. 1 (a cross-sectional view taken along arrow II in FIG. 2). The grip portion 12 is a portion that is fitted to the flange plate portion 23 of the body 2 to fix the weather strip 10 and covers the edge of the trim T2 that is a decorative material on the vehicle interior side, as shown in FIG. The grip portion 12 protrudes in a band shape with a certain width from the U-shaped portion 121 fitted to the flange plate portion 23 of the body 2 and the front side (opposite the groove 121m) of the U-shaped portion 121, and covers the edge of the trim T2. The covering portion 123 has a substantially F-shaped cross section.

The U-shaped portion 121 of the grip portion 12 has a retaining plate 122a, 122b, 122c for preventing the flange plate portion 23 from being removed from both side walls of the groove 121m into which the flange plate portion 23 of the body 2 is inserted. 122d is formed to protrude. The retaining plates 122a, 122b, 122c, 122d are inclined in the insertion direction of the flange plate portion 23, and are flange plate portions with respect to the retaining plates 122a, 122b, 122c that hold the outside of the flange plate portion 23. The protruding dimension of the retaining plate 122d for holding the indoor side 23 is set large.
Further, an iron plate 124 having a U-shaped cross section is embedded in the U-shaped portion 121 of the grip portion 12, and the width dimension of the groove 121m is ensured to a constant value.
Further, on the surface of the grip portion 12, a skin layer 125 having a color substantially equal to the trim T <b> 2 that is a decorative material on the vehicle interior side is laminated from the covering portion 123 to the U-shaped portion 121.

As shown in FIG. 1, the hollow seal portion 14 is formed in a cylindrical shape and is disposed on the outer side in the vehicle width direction with respect to the grip portion 12. When the slide door 4 is closed, the hollow seal portion 14 is formed on the slide door 4. It is deformed by being pressed and seals between the peripheral edges of the sliding door 4 and the entrance 20 of the body 2.
The hollow seal portion 14 includes a front connecting portion 141 and a rear connecting portion 142 having a substantially L-shaped cross section connected to the outer surface of the U-shaped portion 121 of the grip portion 12, and a seal body portion that is deformed by being pressed by the slide door 4. 144.
A skin layer 145 having the same color as the skin layer 125 is laminated on the surface of the seal main body 144 and the front side connection portion 141 of the hollow seal portion 14 continuously with the skin layer 125 of the grip portion 12. . Here, as shown in FIGS. 3 to 5, the skin layer 145 of the seal main body 144 is laminated on an exposed portion that can be seen from the vehicle interior side when the slide door 4 is closed. In addition, the white arrow of FIG. 5 represents the eye line.
That is, the front side connecting portion 141 and the rear side connecting portion 142 having a substantially L-shaped cross section correspond to the wall material positioned on the grip portion side in the hollow seal portion of the present invention, and the seal main body 144 abuts the slide door of the present invention. It corresponds to the side wall material.

<About the forming method of the weather strip 10>
Next, a method for forming the weather strip 10 will be briefly described with reference to FIG.
The weather strip 10 is formed into a predetermined cross-sectional shape by an extrusion molding apparatus shown in FIG. That is, the belt-shaped iron plate 124 wound around the roller 10d is pulled out horizontally and moved in the direction of the arrow while being passed through the first mold 10a, the second mold 10b, and the third mold 10c. ing. The first mold 10a is supplied with microfoamed ethylene propylene rubber (EPDM) X. Then, micro-foamed ethylene propylene rubber (EPDM) X is extruded from the first molding die 10a and the grip portion 12 of the weather strip 10 and the front connection portion 141 and the rear connection portion 142 of the hollow seal portion 14 are wrapped around the iron plate 124. And are molded.
Further, highly foamed ethylene propylene rubber Y is supplied to the second mold 10b. Then, the highly foamed ethylene propylene rubber Y is extruded from the second molding die 10b, and the seal main body portion 144 of the hollow seal portion 14 is molded.
Further, the third molding die 10c is supplied with a microfoamed ethylene propylene rubber Z having a color substantially equal to that of the trim T2. Then, the finely foamed ethylene propylene rubber Z is extruded from the third mold 10c, and the skin layer 125 of the grip portion 12 and the skin layer 145 of the hollow seal portion 14 are formed.

As described above, the grip portion 12 of the weather strip 10, the front side connection portion 141, the rear side connection portion 142, and the skin layers 125 and 145 of the hollow seal portion 14 are formed by the microfoamed ethylene propylene rubbers X and Z. The grip portion 12 and the like are relatively hard. On the other hand, since the seal main body 144 of the hollow seal portion 14 is formed of the highly foamed ethylene propylene rubber Y, the seal main body 144 is relatively soft.
That is, the step of forming the grip portion 12 of the weatherstrip 10 and the front side connection portion 141 and the rear side connection portion 142 of the weather seal 10 by the first molding die 10a corresponds to the hard rubber material molding step of the present invention. The process of molding the seal main body part 144 of the hollow seal part 14 by the two molding dies 10b corresponds to the soft rubber material molding process of the present invention. Moreover, the process of shape | molding the skin layer 125 of the grip part 12 and the skin layer 145 of the hollow seal part 14 by the 3rd shaping | molding die 10c corresponds to the skin layer shaping | molding process of this invention.
Thus, when the formation of the weather strip 10 is completed, the heat treatment of the weather strip 10 is performed as shown in FIG. Thereby, between the fine foaming ethylene propylene rubber X which comprises the grip part 12 grade | etc., The highly foamed ethylene propylene rubber Y which comprises the seal body part 144, and the fine foaming ethylene propylene rubber Z which comprises the skin layers 125,145. The bonding force of is strengthened.
Next, after the surface treatment of the weather strip 10 is performed, the weather strip 10 is cut into a predetermined length, and the iron plate 124 is bent into a U-shaped cross section to complete the weather strip 10.

<Installation and operation of weather strip 10>
As shown in FIGS. 3 to 5, the weather strip 10 is configured such that the U-shaped portion 121 of the grip portion 12 is fitted into the flange plate portion 23 located on the periphery of the entrance / exit 20 of the body 2, thereby Mounted on the periphery. Then, in a state where the weather strip 10 is attached to the periphery of the entrance / exit 20, the edge of the trim T 2, which is a decorative material on the vehicle interior side, is covered with the covering portion 123 of the grip portion 12.
When the slide door 4 is closed, the seal main body 144 of the hollow seal portion 14 is pressed and deformed by the seal plane 43 of the slide door 4 as shown in FIG. The gap between the peripheral edges of the entrance / exit 20 of the body 2 is sealed. At this time, the front side connection part 141 and the rear side connection part 142 of the hollow seal part 14 of the weather strip 10 are formed sufficiently harder than the seal main body part 144 by the fine foamed ethylene propylene rubber X as described above. For this reason, even if the seal body 144 is deformed, the front connecting part 141 and the rear connecting part 142 are hardly deformed, and the hollow seal part 14 is moved in the direction of arrow E in FIG. There is no falling down.

<Advantages of Weather Strip 10 According to the Present Embodiment>
According to the weather strip 10 according to the present embodiment, the surface of the hollow seal portion 14 has the grip portion 12 that constitutes the decorative wall surface in the vehicle interior on the exposed portion that can be seen from the vehicle interior side when the slide door 4 is closed. A skin layer 145 having the same color as the skin layer 125 is laminated. For this reason, the exposed portion of the hollow seal portion 14 that is located in the gap between the slide door 4 and the grip portion 12 of the weather strip 10 and is visible from the vehicle interior side becomes inconspicuous, and between the wall surface in the vehicle interior and the hollow seal portion 14. No discomfort due to color differences. That is, the sense of unity of the interior color of the vehicle interior is not impaired, the appearance of the interior of the vehicle interior is improved, and a sense of quality can be achieved.
Moreover, since the wall material (front side connection part 141, rear side connection part 142) located in the grip part 12 side in the hollow seal part 14 is comprised with the rubber material of the hardness equal to the grip part 12, it is a sliding door. When closing 4, the hollow seal portion 14 pressed by the slide door 4 is supported by a hard rubber material, and is difficult to fall in the pressing direction. For this reason, in order to prevent the sealing failure between the slide door 4 and the body 2, there is no need to provide a stopper member as in the prior art.
Further, since the skin layers 125 and 145 are made of a colored rubber material, the skin layer 145 and the hollow seal portion 14 can be integrated, and the hollow seal portion 14 is deformed as the slide door 4 is opened and closed. However, the problem that the skin layer 145 peels off from the surface of the hollow seal portion 14 with time does not occur.
Moreover, the structure which forms the part which consists of a hard rubber material, the part which consists of a soft rubber material, and a skin layer in order by extrusion molding, and shaping | molding of a skin layer becomes easy.

<Example of change>
Here, the present invention is not limited to the above-described embodiment, and can be modified without departing from the gist of the present invention. For example, in this embodiment, the skin layer 145 of the hollow seal portion 14 and the skin layer 125 of the grip portion 12 are both formed of a rubber material having the same hardness as the grip portion 12. However, it is also possible to form the skin layer 145 of the hollow seal portion 14 from a rubber material having a softness equal to that of the seal body portion 144.
In addition, although the example in which the skin layer 145 of the hollow seal portion 14 and the skin layer 125 of the grip portion 12 are configured with substantially the same color as the trim T2 that is a decoration material on the vehicle interior side is shown, the harmony of the color in the room is taken into consideration Thus, it is possible to make the color different from that of the trim T2. It is also possible to make the skin layer 145 of the hollow seal portion 14 and the skin layer 125 of the grip portion 12 different colors.

It is a plane sectional view of the weather strip concerning Embodiment 1 of the present invention. It is a whole side view of a weather strip. It is a perspective view showing the function of a weather strip. It is a top view showing the function of a weather strip. FIG. 5 is an enlarged view taken along arrow V in FIG. 4. It is a schematic diagram (A figure, B figure) showing the shaping | molding method etc. of a weather strip. It is the front view which represented the entrance / exit of the body of the vehicle in which a weather strip is attached from the vehicle interior side. It is a top view showing the function of the conventional weather strip.

Explanation of symbols

2 ... Body 4 ... Sliding door 10 ... Weather strip 12 ... Grip part 121m ... Groove 125 ... Skin layer 14 ... Hollow seal part 141 ...・ Front connection part (wall material)
142 ... rear side connection part (wall material)
144 ... Seal body (wall material on the side where the sliding door comes into contact)
145 ... Skin layer 20 ... Entrance 23 ... Flange plate

Claims (4)

  1. A belt-shaped weatherstrip that is attached to a flange plate portion located at the periphery of an entrance / exit formed in a vehicle body and seals between a slide door that opens / closes the entrance / exit and the periphery of the entrance / exit of the body. And
    A grip part provided with a skin layer that is configured to be fitted to the flange plate part of the body using a groove formed on the outer periphery side,
    It is formed in a cylindrical shape and is arranged on the outer side in the vehicle width direction than the grip portion. When the slide door is closed, the slide door is pressed and deformed, and the slide door and the entrance of the body A hollow seal portion for sealing between the peripheral edges,
    The hollow seal portion includes a seal main body portion that is deformed by being pressed by the slide door, a front connection portion that connects the seal main body portion to an outer surface of the grip, a rear connection portion, and the slide door is closed. Sometimes, it is laminated on the exposed portion visible from the vehicle interior side, and comprises a skin layer that forms a wall design in the vehicle interior together with the skin layer of the grip portion ,
    The front connection part, the rear connection part, and the skin layer of the hollow seal part are made of a rubber material having the same hardness as the grip part, and the seal body part of the hollow seal part is more than the grip part. A weatherstrip that is made of a soft rubber material .
  2. A weatherstrip according to claim 1, comprising:
    The weather strip according to claim 1, wherein the skin layer of the hollow seal portion is set in the same color as the skin layer of the grip portion.
  3. A weather strip according to claim 1 or claim 2,
    The weatherstrip characterized by the skin layer laminated | stacked on the said grip part and the said hollow seal part being comprised with the colored rubber material.
  4. A method for forming a weather strip according to claim 3,
    A hard rubber material molding step of molding the front connection part and the rear connection part of the grip part and the hollow seal part around the core material by extrusion molding;
    After the hard rubber material molding step, a soft rubber material molding step of molding the seal body portion of the hollow seal portion by extrusion molding,
    After the soft rubber material molding step, a skin layer molding step for molding the skin layer of the hard rubber material, also by extrusion molding,
    A method of forming a weather strip, comprising:
JP2007300427A 2007-11-20 2007-11-20 Weather strip and method of forming the same Active JP5181636B2 (en)

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Application Number Priority Date Filing Date Title
JP2007300427A JP5181636B2 (en) 2007-11-20 2007-11-20 Weather strip and method of forming the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007300427A JP5181636B2 (en) 2007-11-20 2007-11-20 Weather strip and method of forming the same

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JP2009126226A JP2009126226A (en) 2009-06-11
JP5181636B2 true JP5181636B2 (en) 2013-04-10

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010149838A (en) * 2008-09-30 2010-07-08 Toyoda Gosei Co Ltd Opening trim weatherstrip for automobile

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3031536B2 (en) * 1996-06-24 2000-04-10 本田技研工業株式会社 Weatherstrip for sliding door
GB2327451B (en) * 1997-07-16 2001-08-01 Draftex Ind Ltd Sealing strips
GB2355480B (en) * 1999-10-18 2003-03-05 Draftex Ind Ltd Sealing strips
GB2359320B (en) * 2000-01-18 2003-11-19 Draftex Ind Ltd Sealing arrangements
JP3719114B2 (en) * 2000-08-28 2005-11-24 豊田合成株式会社 Weather strip
JP3867487B2 (en) * 2000-09-13 2007-01-10 豊田合成株式会社 Weather strip for automobile and manufacturing method thereof
JP2004322952A (en) * 2003-04-28 2004-11-18 Toyoda Gosei Co Ltd Opening trim weather strip for vehicle
US20050048263A1 (en) * 2003-08-26 2005-03-03 Schlegel Corporation Reflective surface for a vehicle weatherseal

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