JP5998958B2 - Door belt line structure - Google Patents

Description

  The present invention relates to a door belt line structure including a door inner panel of a vehicle and a long weather strip that closes a space between the door inner panel and the door glass.

  Conventionally, a long seal member called a weather strip that closes the door glass is attached to the upper end of a door inner panel of a side door of an automobile (for example, Patent Document 1). The weather strip functions to prevent dust and noise from entering the passenger compartment and to prevent the door glass from vibrating. The weather strip is generally made of a synthetic resin or a thermoplastic elastomer, and is in contact with the door glass at a protruding flexible portion called a lip portion, and has a configuration that does not hinder the raising and lowering of the door glass.

JP 2002-274175 A

  In the current vehicle, it is desired to further reduce the size and weight of each component including the weather strip and the door inner panel. However, the door inner panel to which the weather strip is attached is a relatively large member. Even if the weather strip is reduced in size, for example, if the shape is changed unnecessarily, the moldability will be reduced and the cost will be reduced. May affect the surface.

  In view of such problems, an object of the present invention is to provide a door belt line structure that can contribute to miniaturization of a weather strip and improvement of formability of a door inner panel with a simple configuration.

  In order to solve the above problems, a typical configuration of a door belt line structure according to the present invention includes a door inner panel of a vehicle, and a long weather strip for closing a space between the door inner panel and the door glass. It is a door belt line structure, and the door inner panel is elongated along the lower edge of the door glass opening, extends vertically so that the height of the upper end is constant, and the weather strip is attached from above. A flange portion and a seat surface portion bent inward from the lower end of the flange portion, the first seat surface portion and a second seat surface portion having a higher formation position than the first seat surface portion are alternately arranged along the longitudinal direction of the flange portion. A plurality of seating surface portions, and the flange portion is a first flange portion provided above the first seating surface portion and having a projecting portion protruding outward from the vehicle, and a second seating surface portion. Above The weather strip has a plurality of second flange portions that are smaller in the vertical direction than the first flange portion, and the weather strip has a lip portion in contact with the second seating surface portion on the lower side inside the vehicle and a first lower portion on the lower side outside the vehicle. It has a nail | claw part caught on the protrusion part of a flange part, It is characterized by the above-mentioned.

  In the above configuration, since the height of the second seat surface portion with which the lower lip portion of the weather strip contacts is increased, the lip portion is brought into contact with the first seat surface portion without providing the second seat surface portion. Compared to, weatherstrips can be made shorter and smaller in size. In addition, with the above configuration, the vehicle inner portion such as the lip portion is shortened, but the hook portion on the vehicle outer side is hooked on the protruding portion of the flange portion, so that the mounting rigidity can be reduced. It is preferable.

  Said 2nd seat surface part is good to be formed flat. When the second seating surface portion is flat, the weather strip can easily come into contact with each other, so that the mounting posture of the weather strip can be further stabilized.

  Said seat surface part may incline below the vehicle interior as seen from the flange part, and the second seat surface part may have a larger inclination angle than the first seat surface part. The door inner panel is made of sheet metal. For example, if the door inner panel is for a side door, the door inner panel extends in the vertical direction and in the vehicle front-rear direction and is pressed in the vehicle width direction. In that case, if the first seat surface portion and the second seat surface portion are inclined with respect to the pressing direction, it becomes easier to perform die-cutting during pressing, and the plastic workability is improved, so that the moldability is improved. it can. If the moldability can be improved, it is possible to contribute to the thinning of the door inner panel.

  Said seat surface part is good for the level | step-difference part between a 1st seat surface part and a 2nd seat surface part to connect smoothly. By providing the step portion with a smooth corner, stress concentration on the seat surface portion can be prevented, and the sectional moment of the seat surface portion as a whole is improved, so that the rigidity against the bending moment is increased. By securing rigidity in this way, the door inner panel can be allowed to be further thinned.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the door belt line which can contribute to size reduction of a weather strip and the improvement of the moldability of a door inner panel with a simple structure.

It is a figure which shows the outline | summary of the door belt line structure concerning embodiment of this invention. It is the figure which abbreviate | omitted the door trim and door glass of FIG.1 (b). It is a perspective view of the door belt line structure of FIG. It is each sectional drawing of FIG. It is FF sectional drawing of FIG. It is a figure which shows the modification of the door inner panel of FIG. It is each sectional drawing of FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a view showing an outline of a door belt line structure 100 according to an embodiment of the present invention. As shown in FIG. 1A, the door belt line structure 100 is implemented in the vicinity of the belt line L1 in the side door 102 on the vehicle front right side of the vehicle 101. Here, the belt line L1 is a term indicating a lower edge portion of the door glass opening E1 in the panel region 104 of the side door 102. The door belt line structure 100 is a generic name including each member constituting the belt line L1.

  FIG.1 (b) is the figure which showed the vehicle inner side of the side door 102 shown to Fig.1 (a). As shown in FIG.1 (b), the vehicle interior side of the side door 102 becomes a structure which attached the resin-made door trim 108 to the door inner panel 106 which is a sheet-metal panel member as an interior material. In addition, although illustration is abbreviate | omitted, the side door 102 is comprised including several members, such as a door outer panel, in addition.

  FIG. 2 is a view in which the door trim 108 and the door glass 110 in FIG. 1B are omitted. As illustrated in FIG. 2, a weather strip 112 is attached to the lower edge of the door glass opening E <b> 1 of the door inner panel 106 covered with the door trim 108. The weather strip 112 is a long sealing material that closes between the door inner panel 106 and the door glass 110 (see FIG. 1B and the like). The weather strip 112 functions to prevent dust and noise from entering the passenger compartment and to prevent the door glass 110 from vibrating.

  In the door belt line structure 100, the structure of the door inner panel 106 and the weather strip 112 is devised, and the weather strip 112 is downsized and the formability of the door inner panel 106 is improved. Hereinafter, the configuration of the door inner panel 106 and the weather strip 112 will be further described.

  FIG. 3 is a perspective view of the door belt line structure 100 of FIG. In FIG. 3, the weather strip 112 is illustrated as being removed. As shown in FIG. 3, the weather strip 112 is attached so as to be inserted from above into a flange portion 114 constituting the upper edge of the door inner panel 106. The flange portion 114 is a portion that extends so as to rise in the vertical direction, and is provided in a long shape along the lower edge of the door glass opening E1.

  A seat surface portion 116 is provided in a region below the flange portion 114 in the door inner panel 106. The seat surface portion 116 is an upper surface of a portion bent from the lower end of the flange portion 114 toward the vehicle inner side so as to secure an installation space for other devices inside the door inner panel 106. In the present embodiment, the seat surface portion 116 includes a plurality of first seat surface portions 116 a and second seat surface portions 116 b that are higher in formation position than the first seat surface portions 116 a along the longitudinal direction of the flange portion 114. It is formed to line up.

  In response to the formation of the first seat surface portion 116a and the second seat surface portion 116b, the flange portion 114 is also configured to include the first flange portion 114a and the second flange portion 114b. The first flange portion 114a is a portion of the flange portion 114 that is provided above the first seat surface portion 116a, and has a protruding portion 118 that protrudes to the outside of the vehicle. The protrusion 118 is a part used for attaching the weather strip 112. On the other hand, the 2nd flange part 114b is a site | part provided above the 2nd seat surface part 116b, Comprising: A formation position is higher than the 1st flange part 114a. Since the height of the upper end 115 of the flange portion 114 is constant in the longitudinal direction, the second flange portion 114b has a smaller vertical dimension than the first flange portion 114a.

  4 is a cross-sectional view of FIG. 4 virtually illustrates the door glass 110 and the door trim 108 (both see FIG. 1B) that are omitted in FIG. FIG. 4A is a cross-sectional view taken along the line AA in FIG. As shown in FIG. 4A, the weather strip 112 is provided with a plurality of lip portions over its entire length. The lip portions 122 and 124 are portions that come into contact with the door glass 110, support the door glass 110 that moves up and down, and wipe the door glass 110 to prevent dust and dirt from entering the door. In addition, the lip portion 126 prevents dust and the like from entering between the door trim 108 and the door inner panel 106. Further, the engaging portion 128 is a portion that meshes with the claw structure of the door trim 108, and the door trim 108 is assembled to the weather strip 112 using the engaging portion 128.

  A plurality of lip portions are also provided in the lower portion of the weather strip 112 on the inner side of the vehicle. First, the sound insulation lip portion 130 contacts the flange portion 114 to prevent sound from entering the vehicle interior from the inside of the door. Further, in FIG. 4A, the posture maintaining lip 132 does not contact other parts, but in the BB cross-sectional view of FIG. 3B shown in FIG. 4B, the posture holding lip 132 contacts the second seat surface part 116b. It serves to maintain the posture of the strip 112.

  Here, reference is again made to FIG. As shown to Fig.4 (a), the protrusion part 118 is formed in the 1st flange part 114a so that it may raise toward the vehicle outer side. The weather strip 112 has a claw portion 134 at a lower portion on the outer side of the vehicle, and the claw portion 134 is caught by the protruding portion when inserted into the flange portion 114 from above. As a result, the weather strip 112 can maintain a more stable mounting posture.

  As shown in FIG. 3, the protruding portion 118 is provided separately for each portion of the flange portion 114 that is the first flange portion 114 a. And the 2nd bearing surface part 116b mentioned above is formed in the location where this protrusion part 118 is not provided, and the surface which the weather strip 112 contacts is made high.

  Since the second seating surface portion 116b is formed high, the lower part inside the vehicle where the posture holding lip portion 132 and the like are provided in the weather strip 112 of FIG. 4 (b) is temporarily shown in FIG. 4 (a). Compared to the configuration in which the posture holding portion lip portion 132 is in contact with the first seat surface portion 116a, it is shorter in the vertical direction. That is, in this embodiment, since the second seating surface portion 116b is provided on the seating surface portion 116 at a location where the protruding portion 118 is not provided and the height thereof is increased, the upper and lower widths of the weather strip 112 can be shortened and miniaturized. It has become.

  As described above, the weather strip 112 has a shorter lower portion on the inner side of the vehicle, but is secured to the protrusion 118 by the claw portion 134 on the lower side of the outer side of the vehicle, so that sufficient mounting rigidity is ensured. . In the present embodiment, since the second seat surface portion 116b is formed flat, the posture holding portion lip 132 is easy to contact, and the weather strip 112 can further stabilize its mounting posture by this configuration. It is possible.

  Further, in the present embodiment, as shown in FIG. 3, since the stepped portion 136 is provided between the first seating surface portion 116a and the second seating surface portion 116b, the seating surface portion 116 as a whole has an improved secondary moment of section. Thus, the rigidity against the bending moment is increased. FIG. 5 is a cross-sectional view taken along line FF in FIG. As shown in FIG. 5, in order to avoid stress concentration, the stepped portion 136 is configured so that the first seat surface portion 116a and the second seat surface portion 116b are smoothly connected and has no corners. With these configurations, the seat surface portion 116 has a high rigidity, so that the door inner panel 106 can be allowed to be further thinned.

(Modification)
FIG. 6 is a view showing a modification of the door inner panel 106 of FIG. The door inner panel 200 shown in FIG. 6 is different from the door inner panel 106 shown in FIG. As shown in FIG. 6, the seat surface portion 202 also has a first seat surface portion 202 a and a second seat surface portion 202 b, but at the same height at the inner end of the first seat surface portion 202 a and the second seat surface portion 202 b. It has become.

  FIG. 7 is a cross-sectional view of FIG. 7A is a cross-sectional view taken along the line CC in FIG. 6, and FIG. 7B is a cross-sectional view taken along the line DD in FIG. As can be seen by comparing the second seat surface portion 202b in FIG. 7B with the first seat surface portion 202a in FIG. 7A, the first seat surface portion 202a has an angle θ1 with respect to the horizontal direction H, The second seat surface portion 202b has an angle θ2, and is inclined toward the vehicle inner side as viewed from the flange portion 114. With respect to these inclination angles, the second seat surface portion 202b having an angle θ2 is larger than the first seat surface portion 202a having an angle θ1.

  Here, the door inner panel 200 is a large member made of sheet metal and extended in the front-rear direction and the front-rear direction of the vehicle. At that time, even if the first seating surface portion 202a and the second seating surface portion 202b are configured to have different heights, the first seating surface portion 202a and the second seating surface portion 202b are inclined with respect to the press direction. Therefore, it is easy to perform die cutting during pressing, and plastic workability is also improved, so that formability can be improved. These effects are improved in proportion to the magnitude of the tilt angle. Such an improvement in formability contributes to further thinning of the door inner panel 200, and is very beneficial.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  INDUSTRIAL APPLICABILITY The present invention can be used as a door belt line structure including a door inner panel of a vehicle and a long weather strip that closes a space between the door inner panel and the door glass.

L1 ... belt line, E1 ... door glass opening, 100 ... door belt line structure, 101 ... vehicle, 102 ... side door, 104 ... panel region, 106 ... door inner panel, 108 ... door trim, 110 ... door glass, 112 ... Weather strip, 114… flange portion, 114a… first flange portion, 114b… second flange portion, 115… upper end of flange portion, 116… seat surface portion, 116a… first seat surface portion, 116b… second seat surface portion, 118… Projection part, 122, 124, 126 ... Lip part, 128 ... Engagement part, 130 ... Sound insulation lip part, 132 ... Posture holding lip part, 134 ... Claw part, 136 ... Step part, 200 ... Door inner panel of modified example, 202... Bearing surface portion of modification, 202 a... First bearing surface portion of modification, 202 b. 2nd seat part

Claims (4)

A door belt line structure including a door inner panel of a vehicle and a long weather strip that closes between the door inner panel and the door glass,
The door inner panel is
A flange portion that is provided along the lower edge of the door glass opening, extends vertically so that the height of the upper end is constant, and the weather strip is attached from above;
The seat portion bent from the lower end of the flange portion toward the vehicle inner side, wherein the first seat portion and the second seat portion having a higher formation position than the first seat portion are alternately arranged along the longitudinal direction of the flange portion. A plurality of bearing parts,
With
The flange portion is a first flange portion provided above the first seat surface portion, and has a first flange portion having a protruding portion protruding outward from the vehicle, and provided above the second seat surface portion. A plurality of second flange portions having a smaller vertical dimension than the first flange portion;
The weather strip has a lip portion that contacts the second seating surface portion at the lower portion on the inner side of the vehicle, and a claw portion that catches on the protruding portion of the first flange portion at the lower portion on the outer side of the vehicle. .   The door belt line structure according to claim 1, wherein the second seat surface portion is formed flat. The seat surface portion is inclined downward on the inside of the vehicle as viewed from the flange portion,
The door belt line structure according to claim 1 or 2, wherein the second seat surface portion has an inclination angle larger than that of the first seat surface portion.   4. The door belt line structure according to claim 1, wherein a stepped portion between the first seat surface portion and the second seat surface portion is smoothly connected to the seat surface portion. 5. .

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