JP2013241150A - Vehicular trim material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure workability in attaching a weather strip to thick portion of a flange while allowing the weather strip to be stably attached to a thin portion of the flange.SOLUTION: A vehicle-interior sidewall 24 provided with a retaining lip 27 is formed so that an inner side face 24a closer to a top wall 25 than a base of the retaining lip 27 is positioned outward of an attaching portion 20 compared to an inner side face 24b closer to an edge 29 than the base of the retaining lip 27. This prevents the retaining lip 27 from hitting the inner face of the sidewall 24 easily when inserting a thick part of a flange 16 into the attaching portion 20, and avoids an increase of a force in inserting the flange 16. Moreover, the base of the retaining lip 27 is increased in rigidity and the retaining lip 27 is not easily bent toward the edge 29 of the sidewall 24, and thus, the attaching portion 20 can be prevented from being degraded in retaining capability even if the attaching portion 20 is attached to a thin part of the flange 16.

Description

  The present invention relates to a trim material for a vehicle attached to a flange provided along the periphery of an opening of a vehicle body.

  Generally, a trim material (for example, a weather strip) is attached to a flange provided along the periphery of an opening such as a door opening or a trunk opening of a vehicle body such as an automobile. As such a trim material, a holding lip that protrudes from the inner side surface of the side wall of the mounting portion is integrally provided on the mounting portion having a substantially U-shaped cross section, and the holding lip is inserted into the flange inserted between both side walls of the mounting portion. There is one in which the trim material is attached and fixed to the flange by the contact.

  By the way, the flange provided along the periphery of the opening of the vehicle body does not necessarily have a constant thickness in the longitudinal direction, and the thickness may vary depending on the part. On the other hand, the long trim material attached to the flange is generally formed by extrusion to have a constant cross-sectional shape in the longitudinal direction.

  For this reason, when the trim material is attached to the thick part of the flange, the holding lip is greatly elastically deformed when the thick part of the flange is inserted into the attachment part of the trim material, compared to when the thin part of the flange is inserted. Therefore, the insertion force when inserting the flange into the attachment portion is increased, and the workability of attaching the trim material is deteriorated.

  As a countermeasure, as described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2001-334485), a curved notch, a notch, a slit, or the like is provided at the base of the holding lip in the thick plate portion of the flange to reduce the thickness. In some cases, the holding lip can be easily bent at the thin wall portion when the flange is inserted by forming the portion.

Japanese Patent Laid-Open No. 2001-334885

  However, in the technique of the above-mentioned Patent Document 1, since it is necessary to form a thin portion at the base of the holding lip partially in the longitudinal direction of the trim material, the holding lip is formed after variable extrusion molding or trim material extrusion. An extra work step such as cutting out the root is required, and the productivity of the trim material is deteriorated.

  In addition, when trim material is formed in a constant cross-sectional shape by extrusion so that a thin part is formed at the base of the holding lip over the entire length of the trim material, the trim material is attached to a thin portion of the flange. In this case, a thin portion of the flange is inserted into the attachment portion of the trim material, and the holding lip comes into contact with the thin portion of the flange, so that the elastic deformation amount of the holding lip is reduced. For this reason, the elastic repulsive force of the holding lip is reduced, the holding force of the holding lip with respect to the flange is reduced, and the trim material may not be stably fixed to the thin portion of the flange.

  Accordingly, the problem to be solved by the present invention is that the deterioration of the mounting workability when the trim material is attached to the thick part of the flange can be prevented without reducing the productivity, and the thin part of the flange An object of the present invention is to provide a trim material for a vehicle that can stably fix a trim material.

  In order to solve the above-mentioned problem, the invention according to claim 1 can be attached to a flange provided along the periphery of the opening of the vehicle body, and connects the vehicle outer side wall portion, the vehicle inner side wall portion, and both side wall portions. A mounting portion having a top wall portion, and a holding lip protruding from an inner side surface of at least one of the vehicle outer side wall portion and the vehicle inner side wall portion, and a flange is inserted into the mounting portion, and the holding lip is attached to the flange. It is a trim material for a long vehicle made of an elastic polymer material, which is disposed between a peripheral edge of an opening portion and an openable opening / closing member that closes the opening portion by being brought into contact with the flange. The at least one side wall provided with the lip has a portion of the inner side of the side wall that is closer to the top wall than the base of the holding lip than the base of the holding lip. Formed to be located on the outside It is obtained by the Configurations.

  In this configuration, the side wall provided with the holding lip has a mounting portion on the inner wall of the side wall that is closer to the top wall than the base of the holding lip than the end of the holding lip. It is formed so that it may be located outside. Therefore, when the thick part of the flange is inserted into the mounting part, even if the holding lip is pushed by the flange and elastically deformed outside the mounting part, the holding lip does not immediately hit the inner surface of the side wall part. The holding lip can be easily bent, and an increase in insertion force when inserting the flange into the mounting portion can be prevented. Thereby, the deterioration of attachment workability | operativity at the time of attaching a trim material to the thick part of a flange can be prevented.

  In addition, the side wall portion provided with the holding lip is located on the inner side of the mounting portion of the inner side surface of the side wall portion, the portion closer to the end than the root of the holding lip is closer to the top wall than the root of the holding lip. It is formed so that it may be located in. Therefore, the rigidity of the base of the holding lip can be increased and the base of the holding lip is difficult to bend toward the end of the side wall, so even when the mounting part is attached to the thin part of the flange, the holding force of the mounting part Can be prevented from decreasing. Thereby, a trim material can be stably fixed to the thin part of a flange.

  Moreover, there is no need to partially provide a thin portion in the longitudinal direction of the trim material as in the prior art, and the trim material can be formed in a constant cross-sectional shape in the longitudinal direction, thus reducing the productivity of the trim material. There is no invitation.

  In this case, as described in claim 2, at least one side wall portion provided with the holding lip has a thickness dimension of a portion closer to the end wall than the base of the holding lip, and a portion closer to the top wall than the root of the holding lip. It may be formed so as to be larger than the thickness dimension. If it does in this way, the rigidity of the part by the side of the side of a side wall part can be made high, and the retention strength of the flange by an attaching part can fully be secured.

  Further, the trim material may be formed by extrusion molding. If it does in this way, a trim material can be efficiently manufactured by extrusion molding.

  Further, according to a fourth aspect of the present invention, the attachment portion may be integrally provided with a seal portion that can contact the opening / closing member. In this way, in the trim material (weather strip) in which the seal portion is integrally provided in the attachment portion, the flange is thin while preventing the deterioration of the attachment workability when the trim material is attached to the thick portion of the flange. The trim material can be stably fixed to the portion.

FIG. 1 is a side view showing a schematic configuration of an automobile equipped with a weather strip according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the weather strip (A-A cross-sectional view of FIG. 1). FIG. 3 is a cross-sectional view showing a state when the weather strip attachment portion is attached to a thick portion of the flange. FIG. 4 is a cross-sectional view showing a state where the attaching portion of the weather strip is attached to a thin portion of the flange.

Hereinafter, an embodiment embodying a mode for carrying out the present invention will be described.
As shown in FIG. 1, a car body 11 of an automobile is formed by connecting a plurality of panels such as a roof panel 12 and a side panel 13. A flange 16 (see FIGS. 3 and 4) provided along the periphery of the front door opening 14 and the rear door opening 15 of the vehicle body 11 is provided with a long weather strip 17 (trim material) made of an elastic polymer material. ) Is attached. These weather strips 17 seal between the periphery of the front door opening 14 and the openable / closable front door 18 (opening / closing member) that closes the front door opening 14, and the periphery of the rear door opening 15 and the The space between the rear door opening 15 and the rear door 19 (opening / closing member) that can be opened and closed is sealed.

Next, the structure of the weather strip 17 is demonstrated using FIG. 2 thru | or FIG.
As shown in FIG. 2, the weather strip 17 is formed by extrusion molding of an elastic polymer material such as rubber or thermoplastic synthetic resin (including a thermoplastic elastomer), and a mounting portion 20 having a substantially U-shaped cross section, and a cylindrical shape. A hollow seal portion 21 is integrally formed, and a core material 22 formed of a metal plate or a resin plate is embedded in the attachment portion 20 by composite extrusion molding.

  The mounting portion 20 includes a vehicle outer side wall portion 23, a vehicle inner side wall portion 24, and a top wall portion 25 that connects both side wall portions 23, 24, and a hollow seal portion 21 is formed on the outer surface of the vehicle outer side wall portion 23. It is provided integrally. A plurality of projecting portions 26 projecting toward the vehicle inner side wall portion 24 are integrally formed on the inner side surface of the vehicle outer side wall portion 23, and the vehicle outer side wall portion 24 is formed on the inner side surface of the vehicle outer side wall portion 23. A holding lip 27 that protrudes is integrally formed. Further, a cover lip 28 that protrudes toward the vehicle inner side is integrally formed on the outer surface of the top wall portion 25 (or the vehicle inner side wall portion 24).

  As shown in FIGS. 3 and 4, the attachment portion 20 of the weather strip 17 is covered with the flange 16 provided along the peripheral edge of the door opening (front door opening 14 or rear door opening 15). The flange 16 is inserted between the side wall portions 23 and 24 of the 20 and the mounting portion 20 is attached to the flange 16. At this time, the holding lip 27 comes into contact with the flange 16 and elastically deforms, and the flange 16 is pressed by the elastic repulsive force of the holding lip 27 to hold the flange 16 between the holding lip 27 and the protruding portion 26. Thus, the weather strip 17 is attached and fixed to the flange 16, and the weather strip 17 is disposed between the peripheral edge of the door opening and the door (front door 18 or rear door 19). When the door is closed, the door abuts against the hollow seal portion 21 and elastically deforms the hollow seal portion 21, so that the space between the flange 16 and the door is sealed with the hollow seal portion 21.

  By the way, the flange 16 provided along the periphery of the door opening is formed by overlapping a plurality of panels such as the roof panel 12 and the side panel 13. The thickness of the flange 16 is not constant in the longitudinal direction, and the thickness of the flange 16 varies depending on the number of panels to be overlapped and the thickness thereof depending on the part. That is, in the longitudinal direction of the flange 16, there are a thick portion (see FIG. 3) and a thin portion (see FIG. 4).

  In order to cope with such a difference in the thickness of the flange 16, as shown in FIG. 2, the vehicle inner side wall portion 24 provided with the holding lip 27 is held on the inner side surface of the vehicle inner side wall portion 24. A portion (inner side surface 24a) closer to the top wall 25 than the base of the lip 27 is located on the outer side (vehicle inner side) of the mounting portion 20 compared to a portion (inner side surface 24b) closer to the terminal 29 than the base of the holding lip 27. It is formed to do.

  Further, in the vehicle interior side wall portion 24 provided with the holding lip 27, the thickness dimension Y of the portion closer to the terminal 29 than the base of the holding lip 27 is the thickness of the portion closer to the top wall 25 than the base of the holding lip 27. It is formed so as to be larger than the dimension X. In the present embodiment, the vehicle interior side wall portion 24 has a thickness dimension X of 1.8 mm on the top wall portion 25 side with respect to the root of the holding lip 27, and the portion on the terminal 29 side with respect to the root of the holding lip 27. The thickness dimension Y is 2.0 mm.

  Further, rubber such as EPDM is used as an elastic polymer material for forming the weather strip 17. In the present embodiment, the mounting portion 20 (the vehicle outer side wall portion 23, the vehicle inner side wall portion 24, and the top wall portion 25), the projecting portion 26, the holding lip 27, and the cover lip 28 are made of sponge rubber material having a specific gravity of 0.7 ( The hollow seal portion 21 is formed of a sponge rubber material having a specific gravity of 0.6.

  Next, a case where the weather strip 17 is attached to a thick part of the flange 16 and a case where the weather strip 17 is attached to a thin part of the flange 16 will be described.

[When attaching to thick part of flange 16]
(1) When the thick part of the flange 16 is inserted into the mounting part 20, as shown in FIG. 3, when the thick part of the flange 16 is inserted into the mounting part 20, when the thin part of the flange 16 is inserted In comparison, since the holding lip 27 needs to be greatly elastically deformed, an insertion force required when the flange 16 is inserted into the mounting portion 20 may be increased.

  In consideration of such circumstances, the vehicle inner side wall portion 24 provided with the holding lip 27 is a portion of the inner side surface of the vehicle inner side wall portion 24 that is closer to the top wall portion 25 than the root of the holding lip 27 ( The inner side surface 24 a) is formed so as to be located on the outer side (vehicle inner side) of the mounting portion 20 as compared with the portion (inner side surface 24 b) closer to the terminal 29 than the base of the holding lip 27. Therefore, when the thick portion of the flange 16 is inserted into the mounting portion 20, even if the holding lip 27 is pushed by the flange 16 and elastically deforms outside the mounting portion 20, the holding lip 27 remains inside the vehicle interior side wall portion 24. Since it does not hit the side surface 24a immediately, the holding lip 27 can be easily bent, and an increase in insertion force when the flange 16 is inserted into the mounting portion 20 can be prevented. Thereby, the deterioration of attachment workability | operativity at the time of attaching the weather strip 17 to the thick part of the flange 16 can be prevented.

(2) When the attachment portion 20 is attached to the thick portion of the flange 16 As shown in FIG. 3, the thick portion of the flange 16 is inserted into the attachment portion 20 and the attachment portion 20 is attached to the thick portion of the flange 16. In some cases, the holding lip 27 abuts against the thick portion of the flange 16 and elastically deforms. Therefore, the amount of elastic deformation of the holding lip 27 becomes larger than when the holding lip 27 is attached to the thin portion of the flange 16, and the elasticity of the holding lip 27 is increased. Increases resilience. Since the flange 16 is pressed by this large elastic repulsive force and held between the holding lip 27 and the protruding portion 26, the holding force for holding the flange 16 is increased. Thereby, the weather strip 17 can be stably fixed to the thick part of the flange 16.

[When attaching to the thin part of the flange 16]
(1) When the thin portion of the flange 16 is inserted into the mounting portion 20, as shown in FIG. 4, when the thin portion of the flange 16 is inserted into the mounting portion 20, when the thick portion of the flange 16 is inserted In comparison, since the elastic deformation amount of the holding lip 27 is reduced, the insertion force required when the flange 16 is inserted into the mounting portion 20 is reduced. Thereby, the weather strip 17 can be easily attached to the thin part of the flange 16.

(2) When the attachment portion 20 is attached to the thin portion of the flange 16 As shown in FIG. 4, the thin portion of the flange 16 is inserted into the attachment portion 20 and the attachment portion 20 is attached to the thin portion of the flange 16. In some cases, the holding lip 27 abuts against the thin portion of the flange 16 and elastically deforms, so that the amount of elastic deformation of the holding lip 27 is smaller than when the holding lip 27 is attached to the thick portion of the flange 16 and the elasticity of the holding lip 27 is reduced. Repulsive force is reduced. Since the flange 16 is pressed by this small elastic repulsive force and held between the holding lip 27 and the protruding portion 26, the holding force for holding the flange 16 may be reduced.

  In consideration of such circumstances, the vehicle inner side wall portion 24 provided with the holding lip 27 is a portion of the inner side surface of the vehicle inner side wall portion 24 that is closer to the terminal 29 than the root of the holding lip 27 (inner side surface). 24b) is formed so as to be located on the inner side (vehicle outer side) of the mounting portion 20 as compared with the portion (inner side surface 24a) closer to the top wall portion 25 than the base of the holding lip 27. Accordingly, the rigidity of the base of the holding lip 27 can be increased, and the base of the holding lip 27 is unlikely to be bent toward the terminal 29 side of the vehicle interior side wall portion 24, so that the mounting portion 20 is attached to the thin portion of the flange 16. Even at times, it is possible to prevent the holding force of the mounting portion 20 from being lowered. Thereby, the weather strip 17 can be stably fixed to the thin part of the flange 16.

  Further, in the weather strip 17 of the present embodiment, it is not necessary to partially provide a thin portion in the longitudinal direction of the weather strip as in the prior art, and the weather strip 17 can be formed in a constant cross-sectional shape in the longitudinal direction. Therefore, the weather strip 17 can be efficiently manufactured by extrusion, and the productivity of the weather strip 17 is not reduced.

  Furthermore, in the present embodiment, the vehicle interior side wall portion 24 provided with the holding lip 27 has a thickness dimension Y of a portion closer to the terminal 29 than the base of the holding lip 27, and the top wall portion 25 than the base of the holding lip 27. Since it is formed to be larger than the thickness dimension X of the side portion, the rigidity of the portion on the terminal 29 side of the vehicle interior side wall portion 24 can be increased, and the holding force of the flange 16 by the mounting portion 20 can be increased. Can be secured sufficiently.

  In the above embodiment, the present invention is applied to the weather strip provided with the holding lip on the vehicle inner side wall. However, the present invention is not limited to this. For example, the weather strip provided with the holding lip on the vehicle outer side wall or the vehicle You may apply this invention to the weather strip which provided the holding lip in both the inner side wall part and the vehicle outer side wall part.

  Further, in the above embodiment, the present invention is applied to the weather strip attached to the flange provided along the periphery of the front door opening or the rear door opening, but the present invention is not limited thereto, for example, the back door opening, You may apply this invention to the weather strip attached to the flange provided along the periphery of various opening parts of a vehicle body, such as a trunk opening part.

  Moreover, in the said Example, although this invention was applied to the trim material (weather strip) which provided the cylindrical hollow seal part integrally in the side wall part of the attachment part, it is not limited to this, For example, of an attachment part The present invention is applied to a trim material in which a cylindrical hollow seal portion is integrally provided on the top wall portion, or a trim material in which a non-hollow seal portion not having a hollow portion is integrally provided in the mounting portion, or The present invention may be applied to a trim material that does not include a seal portion (hollow seal portion or non-hollow seal portion).

  In addition, the present invention can be implemented with various modifications within the scope not departing from the gist, such as the shape of each part of the trim material (attachment part, seal part, holding lip, etc.) and the number of holding lips may be appropriately changed. it can.

  DESCRIPTION OF SYMBOLS 11 ... Car body, 14 ... Front door opening part, 15 ... Rear door opening part, 16 ... Flange, 17 ... Weather strip (trim material), 18 ... Front door (opening / closing member), 19 ... Rear door (opening / closing member), 20 ... Installation , 21 ... Hollow seal part, 23 ... Car outer side wall part, 24 ... Car inner side wall part, 25 ... Top wall part, 27 ... Holding lip, 29 ... Terminal

Claims (4)

An attachment portion that can be attached to a flange provided along the periphery of the opening of the vehicle body and has a vehicle outer side wall portion, a vehicle inner side wall portion, and a top wall portion that connects both side wall portions; and the vehicle outer side wall portion, A holding lip projecting from the inner side surface of at least one of the vehicle interior side wall portions, the flange is inserted into the mounting portion, and the holding lip abuts against the flange so that the mounting lip is attached to the flange. A trim material for a long vehicle made of an elastic polymer material disposed between a peripheral edge of an opening and an openable / closable opening / closing member that closes the opening,
The at least one side wall portion provided with the holding lip is such that a portion of the inner side surface of the side wall portion closer to the top wall portion than the base of the holding lip is closer to the terminal side than the base of the holding lip. The trim material for vehicles characterized by being formed so that it may be located in the outer side of the said attaching part.   At least one side wall portion provided with the holding lip has a thickness dimension of a portion closer to a terminal side than the root of the holding lip compared to a thickness dimension of a portion closer to the top wall portion than the root of the holding lip. The vehicle trim material according to claim 1, wherein the trim material is formed to be large.   The said trim material is formed by extrusion molding, The trim material for vehicles of Claim 1 or 2 characterized by the above-mentioned.   The vehicle trim material according to any one of claims 1 to 3, wherein a seal portion capable of coming into contact with the opening / closing member is integrally provided in the attachment portion.

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