JP2019104288A - Weather strip and seal structure - Google Patents

Abstract

To ensure acoustic insulation while improving the appearance seen from inside the room.SOLUTION: On the hollow seal parts (21a, 21b), the part formed at the position corresponding to the arrangement position of the door trim (DT) mounted below the belt line part of the door sash (DS) has two hollow seal parts (21a) whose bulging direction inclines to the tip side of the flange (FR) and a hollow seal part (21b) which inclines to the root side of the flange (FR) and the hollow seal part (21b) is formed between the two hollow seal parts (21a).SELECTED DRAWING: Figure 2

Description

  The present invention relates to a weather strip and a seal structure provided with the weather strip.

  Conventionally, in order to improve sealing performance and sound insulation, development of weather strips having various structures has been promoted. Here, as shown in FIG. 4, the conventional weather strip, particularly the opening weather strip, is formed by the thickness difference between the door trim DT and the door sash DS, which is caused by the thickness of the tip of the door trim DT near the beltline portion. In some cases, clearance S may occur between the apex T3 of the hollow seal portion of the weather strip 100 attached to the vehicle body flange FR and the sealing surface M1 of the door sash DS. For this reason, it was necessary to devise to secure sound insulation at a specific part of the weather strip.

  For example, in the weather strip structure described in Patent Document 1, as shown in FIG. 5, a fin-shaped portion H that wraps the door sash DS is set in the weather strip 100 attached to the door, and the step between the door trim and the door sash DS is Cover and pass through the seal. Thereby, the above-mentioned weather strip structure realizes improvement in productivity of the body panel while securing sound insulation.

  Also, in recent years, there is a tendency to increase the front view R of the mounting flange to improve the productivity of the body panel, and as a result, as shown in FIG. There is.

JP-A-11-314523 (disclosed on November 16, 1999)

  However, in the weather strip structure disclosed in Patent Document 1, for example, when the door is white and the weather strip 100 is black due to the presence of the fin shape portion H, the fin shape H of the weather strip 100 attached to the door In the part set, the inside surface of the door sash DS is hidden by the fins H. As a result, a part of the white part is covered and concealed by the black separate member, so that there is a problem that the appearance seen from inside the room is bad (see FIG. 5).

  Further, as shown in FIG. 6, there is a limit to increasing the thickness L4 of the fin-shaped portion 110, and therefore there is a problem that it can not be adopted for a vehicle having a wide seal surface L3.

  Furthermore, when the fin-shaped portion H is not set to the weather strip 100 attached to the door as shown in FIG. 5, the thickness of the door trim DT exists as shown in FIG. The problem of squeezing S occurring between the door sash DS and the hollow seal portion of the weather strip 100 can not be solved.

  One aspect of the present invention is made in view of the above problems, and an object thereof is to realize a weather strip or the like capable of securing sound insulation while improving the appearance seen from the room. is there.

  In order to solve the above problems, a weather strip according to one aspect of the present invention is provided with a mounting base attached to a flange provided on the periphery of a door opening of a car, and bulging outward from the mounting base toward the vehicle And a hollow seal portion formed along the extension direction of the mounting base, wherein the hollow seal portion is lower than a belt line portion of a door for opening and closing the door opening. The part formed at the position corresponding to the arrangement position of the door trim attached to the part is the two first parts whose bulging direction is biased to the tip end side of the flange and the first part biased to the root side of the flange The second part is configured to be formed between the two first parts.

  According to the above configuration, in the hollow seal portion, in the portion formed at the position corresponding to the arrangement position of the door trim mounted below the belt line portion of the door for opening and closing the door opening, the bulging direction is a flange And two second portions which are biased towards the base of the flange, the second portion being formed between the two first portions. For this reason, sound insulation can be secured by appropriately adjusting the arrangement position of the first portion and the second portion. Moreover, according to the above configuration, since it is not necessary to provide a fin-shaped portion as in the above-mentioned prior art, the appearance viewed from the inside can be improved. Thus, the sound insulation can be secured while improving the appearance seen from the room.

  In the weather strip according to one aspect of the present invention, the second portion is preferably disposed in the vicinity of a step between the tip of the door trim and the door. According to the above configuration, it is possible to close the gap formed in the vicinity of the step between the tip of the door trim and the door by the hollow seal portion.

  In the weather strip according to one aspect of the present invention, the second portion has a shape protruding toward the vehicle outer side from both end portions to the central portion in the extending direction, and the tip of the central portion has the door opening portion In the state closed by the door, it is preferred to project outside the end rather than the tip of the door trim. According to the above configuration, in the state in which the door opening is closed by the door, the sealing performance can be further improved as compared with a configuration in which the end of the central portion does not protrude outward from the end of the door trim.

  In order to solve the above problems, a seal structure according to an aspect of the present invention is a seal structure for sealing between a periphery of a door opening of an automobile and a door that opens and closes the door opening. A weathering base having a mounting base attached to the peripheral flange, and a weather strip bulging outward from the mounting base toward the vehicle and formed along the extending direction of the mounting base; The hollow seal portion has a door trim attached below the beltline portion and has a tapered tip, and the portion of the hollow seal portion formed at the position corresponding to the position of the door trim has a bulging direction of the above. It has two first portions which are biased to the front end side of the flange and a second portion which is biased to the base side of the flange, and the second portion includes the two first portions. Portion is formed of, that the site is elastic contact with the front end of the door trim, a configuration in which the between the flange and the door is sealed.

  According to the above configuration, the portion between the flange and the door is sealed by resiliently contacting a portion formed at the tip of the door trim at a position corresponding to the arrangement position of the door trim in the hollow seal portion. Therefore, sound insulation can be secured. Further, according to the above configuration, it is not necessary to provide a fin-shaped portion on the weather strip attached to the door as in the above-mentioned prior art, so that the appearance seen from the inside can be improved. Thus, the sound insulation can be secured while improving the appearance seen from the room.

  According to the weather strip or seal structure according to the aspect of the present invention, it is possible to secure the sound insulation while improving the appearance seen from the room.

It is a left side view of a car equipped with a weather strip according to an embodiment of the present invention. It is a schematic diagram for demonstrating the structure of the said weather strip. It is a schematic diagram for demonstrating the structure of the said weather strip. It is sectional drawing which shows the structure of the conventional weather strip structure. It is a sketch which shows the structure of the conventional weather strip structure. It is sectional drawing which shows the structure of the conventional weather strip structure.

  It will be as follows if embodiment of this invention is described based on FIGS. 1-3. Hereinafter, for the sake of convenience of explanation, the same symbols may be added to the other items for the components having the same functions as the components described in the certain items, and the description thereof may be omitted.

[Structure of weather strip]
The structure of the weather strip 10 according to the embodiment of the present invention will be described based on FIGS. 1 and 2. FIG. 1 is a left side view of a vehicle 1 in which a weather strip 10 is attached to the periphery of a door opening. FIG. 2 is a schematic view for explaining the structure of the weather strip 10. In the present embodiment, the structure of the weather strip 10 in the vicinity of the left front door rear A and the left rear door front B of the automobile 1 shown in FIG. 1 will be described.

  (A) of FIG. 2 has the structure which cut | disconnected the weather strip 10 shown to (c) of FIG. 2 by the AA cross section. Moreover, (b) of FIG. 2 has a structure which cut | disconnected the weather strip 10 shown to (c) of FIG. 2 by the BB cross section.

  As shown in (a) and (b) of FIG. 2, the weather strip 10 is mounted on a mounting base 22 attached to a flange FR provided on the periphery BD of the door opening of the car body of the automobile 1. A hollow seal portion 21a, 21b is provided that bulges outward and is formed along the extension direction of the mounting base 22.

  The mounting base 22 includes an inner wall portion 11 and an outer wall portion 12 and a bottom wall portion 13 in which the inner wall portion 11 and the outer wall portion 12 are continuously provided, and the cross section thereof is substantially U-shaped. The core metal MT is buried.

  Further, a lip portion 14 for holding a flange FR formed along the peripheral edge BD of the door opening portion is formed on the outer side surface of the inner side wall portion 11 of the substantially U-shaped mounting base 22. On the other hand, on the inner side surface of the outer side wall 12 of the mounting base 22, three small projections 15 to 17 which similarly hold the flange FR are formed.

  A hollow seal portion 21a, which is in elastic contact with a door sash (door) DS that opens and closes a door opening on the vehicle outer side surface of the vehicle outer side wall portion 12, and seals between the periphery BD of the door opening and the door sash DS. , 21b are formed.

  In the weather strip 10, in the hollow seal portions 21a and 21b, the portion formed at the position corresponding to the arrangement position of the door trim DT attached to the peripheral edge of the door sash DS is biased in the expansion direction toward the tip side of the flange FR. And two hollow seal parts (first parts) 21a and a hollow seal part (second part) 21b biased to the root side of the flange FR. The hollow seal parts 21b are the two hollow parts. It is formed between the seal parts 21a [see (c) in FIG. 2].

  The hollow seal portion 21 b is preferably disposed in the vicinity of a step DAN between the end DT-a of the door trim DT and the door sash DS. Thereby, it is possible to close the gap S formed in the vicinity of the step DAN between the end DT-a of the door trim DT and the door sash DS by the hollow seal portion 21b.

  Further, as shown in FIG. 2C, the hollow seal portions 21a and 21b have a shape protruding toward the vehicle outer side from both end portions in the extending direction of the mounting base 22 to the central portion, and the tip of the central portion In the state where the door opening is closed by the door sash DS, it protrudes to the outside of the vehicle than the end DT-a of the door trim DT (see FIG. 2B). Thereby, in the state where the door opening is closed by the door sash DS, the sealing performance can be further improved as compared with a configuration in which the tip of the central portion does not protrude outside the vehicle from the tip of the door trim DT.

  In the hollow seal portions 21a and 21b, the extension direction of the mounting base 22 is formed at a position corresponding to the arrangement position of the door trim DT attached to the periphery of the door sash DS for opening and closing the door opening. In a cut view in the case of cutting in a plane perpendicular to each other, a portion [21a; see FIG. 2 (a)] in which the extension direction of the apex T1 in the cut surface is biased to the tip side of the flange FR and the apex T2 in the cut surface A portion [21b; see FIG. 2 (b)] in which the overhanging direction is biased to the base side of the flange FR.

  More specifically, in the state where the hollow seal portion 21a is attached to the flange FR, the apex T1 projecting to the vehicle outer side is set at a position close to the tip end side of the flange FR.

  The first resilient contact surface M1 of the hollow seal portion 21a to the door sash DS above the belt line portion BL is the innermost surface of the door sash DS and is the flange FR of the peripheral edge BD and the door glass It is a plane substantially parallel to (not shown).

  Further, the second elastic contact surface M2 of the front end DT-a of the door trim DT below the beltline portion BL is the surface on the vehicle inner side of the first elastic contact surface M1. Further, an inclined surface M4 inclined from the base of the flange FR of the peripheral edge BD toward the vehicle outer side and a third resilient contact surface M3 opposed to the inclined surface M4 are set as the door sash DS.

  The weather strip 10 removes and removes most of the extruded hollow seal in a wide range of upper and lower desired sections where the tip DT-a of the door trim DT exists in the vicinity of the belt line BL. The hollow seal portion 21b (a pseudo hollow portion) is integrally molded at a portion of the hollow seal portion using a mold (not shown). After molding, the hole from which the core is removed is partially closed in the longitudinal direction using an instant adhesive or the like.

  The weather strip 10 extends in the direction perpendicular to the extending direction of the mounting base 22 in the vicinity of the step difference DAN between the end DT-a of the door trim DT and the door sash DS and the overhanging direction of the apex T2 on the vehicle outer side Is preferably biased to the base side of the flange FR (see FIG. 2 (b)).

  More specifically, the distance L2 from the vehicle outer surface of the flange FR to the vertex T2 of the hollow seal portion 21b is larger than the distance L1 from the vehicle outer surface of the flange FR to the vertex T1 of the hollow seal portion 21a of the extruded cross section. Do. Further, in the desired section of the upper and lower narrow range of the front end DT-a of the door trim DT in the vicinity of the belt line portion BL, the shape of the hollow seal portion 21b is a vertex projecting in the vehicle outer side in a state of being attached to the flange FR. T2 passes the first resilient contact surface M1 of the door sash DS toward the base of the flange FR and reaches the third resilient contact surface M3 of the door sash DS. Thereby, the step DAN can be hidden without setting the fin-shaped portion 110 from the side of the weather strip 100 (door sash mounting seal material), and the appearance when the door is opened is improved.

  As described above, according to the weather strip 10, in the hollow seal portions 21a and 21b, the portion formed at the position corresponding to the arrangement position of the door trim DT is biased toward the tip end side of the flange FR 2 The hollow seal portion 21a has two hollow seal portions 21a and a hollow seal portion 21b biased toward the root of the flange FR, and the hollow seal portion 21b is formed between the two hollow seal portions 21a. For this reason, the sound insulation can be secured by appropriately adjusting the arrangement position of the hollow seal portions 21a and 21b. Moreover, according to the weather strip 10, since it is not necessary to provide a fin-shaped part like the said prior art, the external appearance seen from indoor can be improved. Thus, the sound insulation can be secured while improving the appearance seen from the room.

  For the mounting base 22 and the hollow seal portion 21a, for example, an elastic material such as EPDM (ethylene propylene diene rubber) or TPO (olefin thermoplastic elastomer) can be used.

  The EPDM and TPO may be foams or non-foams. Further, as the core material MT, for example, an iron plate such as a SPCC steel plate (cold rolled steel plate) or a galvanized steel plate can be used.

  The mounting base 22, the core member MT, and the hollow seal portion 21a are integrated, and can be formed by, for example, an extrusion method. Moreover, about the material of the hollow sealing part 21b shape | molded using a metal mold | die, the material similar to the hollow sealing part 21a shape | molded by extrusion molding method can be used.

[Seal structure]
The seal structure of the present embodiment is a seal structure for sealing between the peripheral edge BD of the door opening KB of the vehicle body of the automobile 1 and the door sash DS for opening and closing the door opening KB. The seal structure of the present embodiment is specifically realized by the above-described weather strip 10, the door sash DS and the door trim DT.

  As shown in FIG. 2A, in the portion above the belt line BL, the apex T1 of the hollow seal portion 21a is in a position close to the flange tip FRT side. As shown by the broken line, the lock direction deflection LT occurs.

  On the other hand, as shown in FIG. 2B, in the vicinity of the belt line BL, the apex T2 of the hollow seal portion 21b is at a position near the root of the flange FR. Thus, the hinge direction deflection HT occurs.

  In the seal structure of the present embodiment, a door trim DT having a tapered tip DT-a is provided, and the hollow seal portion 21b is resiliently provided on the tip DT-a of the door trim DT, so that it is between the flange FR and the door sash DS. And are sealed [see FIG. 2 (a)].

  Further, the front end DT-a of the door trim DT has a shape that tapers off and disappears in the vicinity of the connection portion of the first resilient contact surface M1 and the third resilient contact surface M3 of the door sash DS. Thus, when changing the elastic contact surface of the hollow seal portion with respect to the door sash DS or the door trim DT like the vertex T1 → the vertex T2 in the vicinity of the top and bottom of the front end DT-a of the door trim DT, It becomes possible to be smooth.

  Next, FIG. 3 is a schematic view for explaining the structure of the weather strip. Although FIG. 2 shows two cross sections of the A-A cross section and the B-B cross section, FIG. 3 shows four cross sections of the C-C cross section to the F-F cross section, It is a figure which illustrates the positional relationship of a hollow seal part more concretely. (B)-(e) of Drawing 3 shows CC section-FF section of a weather strip shown in (a) of Drawing 3, respectively.

  As for (a) of FIG. 3 and (b) to (e) of FIG. 3, the hollow seal portions 21a and 21b are used as the door sash DS and the door trim DT with the weather strip 10 attached to the flange FR. On the other hand, it shows which position is disposed, and the hollow seal portions 21a and 21b show a state before bending.

  Here, DS1 is the inner side of the door sash DS, DS2 is the outer side of the door sash, DT1 is the outer side of the door trim DT, DT2 is the middle step surface of the door trim DT, and DT3 is the inner side of the door trim DT. They are displayed and described in (a) of FIG. 3 and (b) to (e) of FIG. 3 together with the flange tip FRT.

  As shown in these drawings, the weather strip 10 of this embodiment moves from the upper position (b) to the lower position (e) in the vicinity of the top and bottom of the front end DT-a of the door trim DT. By moving the position of the vertex, such as vertex T1 (b) → vertex T2 (c) (d) → vertex T1 (e), the elastic contact surface M1 (b) → elastic contact surface M3 (c) (D)-> like the resilient contact surface M2 (e), the resilient contact surface of the hollow seal portion to the door sash DS or the door trim DT is changed.

  As a result, the direction in which the hollow seal portion bends is changed as in the lock direction deflection LT (b) → the hinge direction deflection HT (c) · (d) → the lock direction deflection LT (e).

[Items to be added]
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

DESCRIPTION OF SYMBOLS 1 car 10 weather strip 11 car inner side wall part 12 car outer side wall part 13 bottom wall part 14 lip part 15 to 17 small projection 21a hollow seal part (first part) 21b hollow seal part (second part)
22 Mounting base BD rim D door DAN step DT door trim DT-a tip DS door sash (door) FR flange FRT flange tip HT hinge direction deflection KB opening L1 to L3 distance L4 thickness LT lock direction deflection M1 1st elastic contact surface M2 2nd contact surface M3 3rd contact surface M4 inclined surface MT core metal S gap T1 vertex T2 vertex

Claims (4)

A mounting base attached to a flange provided on the periphery of a door opening of a car; and a hollow seal bulging outward from the mounting base toward the vehicle and formed along the extending direction of the mounting base A weather strip provided,
In the hollow seal portion, the portion formed at the position corresponding to the arrangement position of the door trim mounted below the belt line portion of the door for opening and closing the door opening has a bulging direction on the tip end side of the flange And two second parts which are biased to the base side of the flange,
The weather strip, wherein the second portion is formed between the two first portions.   The weather strip according to claim 1, wherein the second portion is disposed in the vicinity of a step between the tip of the door trim and the door. The second portion has a shape that bulges toward the vehicle outer side from the both end portions to the central portion in the stretching direction,
The weather strip according to claim 1 or 2, wherein the leading end of the central portion protrudes outside the vehicle beyond the leading end of the door trim when the door opening is closed by the door. A sealing structure for sealing between a periphery of a door opening of a car and a door for opening and closing the door opening,
A mounting base attached to the peripheral flange, and a weather strip having a hollow seal bulging outward from the mounting base toward the vehicle and formed along the extending direction of the mounting base.
And a door trim attached to a lower side than the belt line portion of the door and having a tapered tip.
In the hollow seal portion, a portion formed at a position corresponding to the arrangement position of the door trim is biased to two first portions whose bulging direction is biased to the tip end side of the flange and to the root side of the flange And a second part,
The second portion is formed between the two first portions,
A seal structure characterized in that the flange and the door are sealed by the portion being in elastic contact with the tip end of the door trim.

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