JP5255481B2 - Vehicle door frame seal structure - Google Patents

Description

  The present invention relates to a seal structure for a vehicle door frame.

  Conventionally, as a seal structure of a door frame for a vehicle, for example, one described in Patent Document 1 is known. In this structure, the upper opening of the vehicle door formed by the door frame (door sash) is divided into two by the partition frame (door partition sash). An end cap made of synthetic resin is attached to the upper end of the partition frame, and direct contact between the upper end of the partition frame and the lower surface of the door frame is avoided. In addition, a sheet-like seal member that is in liquid-tight contact with the lower surface of the door frame is attached to the upper end of the end cap, thereby improving the sealing performance of the joint between the lower surface of the door frame and the upper end of the partition frame. Is planned.

Japanese Patent Laid-Open No. 11-34659

  By the way, in the sealing structure of the door frame for vehicles of patent document 1, since two members, an end cap and a sealing member, are required, the number of parts and a manufacturing man-hour will be forced to increase.

  An object of the present invention is to further improve the sealing performance of a door frame forming an upper opening of a vehicle door and a connecting portion of a partition frame that bisects the upper opening without increasing the number of parts and manufacturing man-hours. Another object of the present invention is to provide a seal structure for a vehicle door frame.

In order to solve the above-mentioned problems, an invention described in claim 1 is directed to an outer door frame portion disposed on the vehicle outer side, an inner door frame portion disposed on the vehicle compartment side, the outer door frame portion and the inner door. A door frame that connects the door frames, and forms a top opening of the vehicle door, and is disposed on the vehicle outer side and the vehicle compartment side, and the upper end portions are the outer door frame portion and the inner door, respectively. and the outer frame section and in naphthoquinone frame portion disposed between the door frame section, and a connecting frame portion connecting between these outer frame portion and the inner frame portion, the upper opening is coupled to the door frame A partition frame that bisects and forms a first opening and a second opening serving as a frame of the door window glass on one side and the other side, and the partition frame A seal member interposed between an upper end portion of the vehicle and the door frame, and a garnish that covers the first opening from the outside of the vehicle together with the partition frame and the seal member. The member includes an upper seal portion that is in liquid-tight contact with the lower surface of the connection door frame portion above the partition frame, and extends downward from the upper seal portion to the second opening portion of the connection frame portion. A lower seal portion in liquid-tight contact with an upper end portion of the facing surface facing thereto, and an inner surface of the outer door frame portion and an outer surface of the outer frame portion between the upper seal portion and the lower seal portion. Outer seal part that comes into contact with each other, and the inner surface of the inner door frame part and the inner frame between the upper seal part and the lower seal part And summarized in that integrally provided with the inner sealing portion for fluid-tight contact with the outer surface of the.

  According to the same configuration, the coupling portion of the door frame and the partition frame includes the first seal member integrally including the upper seal portion, the lower seal portion, the outer seal portion, and the inner seal portion. And it coat | covers so that between 2nd opening parts may be liquid-tightly separated. For example, even if rainwater or the like water that has entered the second opening flows above the partition frame flows into the door frame, the water does not enter the first opening and passes through the seal member. To the partition frame. Therefore, the sealing member, which is a single component, can prevent water such as rainwater that has entered the second opening from entering the first opening and leaking into the vehicle interior. Moreover, it can suppress that an external appearance is impaired by exposure of the said sealing member etc. because the said 1st opening part is covered and hidden from the vehicle outer side with the said division frame and the said sealing member by the said garnish.

  According to a second aspect of the present invention, there is provided the vehicle door frame seal structure according to the first aspect, wherein the seal member includes a side of the lower seal portion that faces the inner seal portion and the outer seal portion. The gist of the invention is to have a pair of projecting walls arranged in parallel on the side of the inner seal portion facing the outer seal portion.

  According to this configuration, the pair of projecting walls forms a groove-shaped drainage channel that is narrower than the width between the outer seal portion and the inner seal portion in the lower seal portion. Accordingly, for example, water such as rainwater that has entered between the outer seal portion and the inner seal portion in the second opening portion can be smoothly transferred to the lower portion (partition frame) of the lower seal portion using the drainage channel. Can be discharged.

  In the present invention, a vehicle capable of further improving the sealing performance of the door frame that forms the upper opening of the vehicle door and the coupling portion of the partition frame that bisects the upper opening without increasing the number of parts and the number of manufacturing steps. A door frame seal structure can be provided.

(A) (b) (c) is an elevation view showing an embodiment of the present invention. The longitudinal cross-sectional view which shows the same embodiment. The side view which shows the same embodiment.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 3 is a side view of the upper structure of the vehicle door to which the vehicle door frame seal structure according to the present embodiment is applied, as viewed from the outside in the vehicle width direction.

  As shown in the figure, the vehicle door 1 includes a door main body 2 constituting the lower part thereof. The door body 2 is a bag-like structure in which a door outer panel constituting the door outer plate and a door inner panel (not shown) constituting the door inner plate are combined, and can be protruded from an upward opening. Door window glass DW etc. are installed.

  In addition, the vehicle door 1 includes a door frame 5 that is attached to an upper end portion of the door body 2 and forms an upper opening 3 of the vehicle door 1. The door frame 5 is formed in a rectangular shape opened downward, and the front side of the door main body 2 (for example, the door inner panel) is fixed at the lower end thereof and extends in the vehicle height direction. The frame 5a and the rear frame 5b have an upper frame 5c whose ends are fixed to each other by, for example, welding so as to bridge between the upper ends of the front frame 5a and the rear frame 5b. The front frame portion 5a, the rear frame portion 5b, and the upper frame portion 5c are formed with a substantially constant cross section, for example, by roll forming a metal plate.

  Further, the vehicle door 1 includes a glass guide rail 6 as a partition frame whose lower end is fixed to the door body 2 on the front side of the rear frame portion 5b. The glass guide rail 6 is formed, for example, by rolling a metal plate so that the cross section is substantially constant, and at the upper end portion that extends above the belt line BL as the upper end of the door body 2, the rear frame portion 5b. Therefore, the glass guide rail 6 bisects the upper opening 3 to form the first opening 3a and the second opening 3b on one side and the other side (rear side and front side), respectively. The second opening 3b constitutes a window frame (that is, a frame of the door window glass DW).

  The vehicle door 1 of the present embodiment is a rear door disposed on the rear side of the front door, and the front frame portion 5a and the rear frame portion 5b are disposed corresponding to the B pillar and the C pillar of the vehicle body. Has been. And the garnish 7 which consists of a board | plate material made from a synthetic resin which coat | covers this from the vehicle width direction outer side is attached to the front side frame part 5a. A garnish 8 made of a synthetic resin plate that covers the rear frame portion 5b from the outside in the vehicle width direction is attached. The garnish 8 covers the first opening 3a from the vehicle width direction outer side (vehicle outer side) together with the rear frame portion 5b and the glass guide rail 6.

  FIGS. 1A, 1B, and 1C show the upper end of the glass guide rail 6 at the vehicle width direction inside (vehicle compartment side), the first opening 3a side (the rear frame portion 5b side), and the second opening. It is the elevation seen from the 3b side, respectively. FIG. 2 is a vertical cross-sectional view showing a connecting portion between the rear frame portion 5 b and the glass guide rail 6.

  As shown in FIG. 1 (a), the rear frame portion 5b is installed slightly obliquely so that the upper side is inclined forward, and the outer door frame portion 11 disposed on the vehicle width direction outer side (vehicle outer side). And an inner door frame portion 12 arranged on the inner side (vehicle compartment side) in the vehicle width direction, and a connecting door frame portion 13 for connecting the outer door frame portion 11 and the inner door frame portion 12 in the vehicle width direction. doing. Therefore, the rear frame portion 5 b faces the upper opening 3 in the connecting door frame portion 13.

  The glass guide rail 6 is installed slightly obliquely so that the upper side tilts backward, and is disposed on the outer frame portion 16 disposed on the outer side in the vehicle width direction (vehicle outer side) and on the inner side in the vehicle width direction (vehicle compartment side). The inner frame portion 17 is connected to the outer frame portion 16 and the inner frame portion 17 in the vehicle width direction. Accordingly, the glass guide rail 6 substantially defines the first opening 3 a and the second opening 3 b in the connecting frame portion 18. The separation distance between the outer surfaces of the outer frame portion 16 and the inner frame portion 17 (outer surfaces opposite to each other in the vehicle width direction) is the same for both the outer door frame portion 11 and the inner door frame portion 12 of the rear frame portion 5b. It is set so that it may become shorter than the separation distance between inner surfaces (the inner surfaces which mutually oppose in a vehicle width direction), and the upper end part of the glass guide rail 6 is an outer door frame part 11 and an inner door frame part in the vehicle width direction. It arrange | positions so that it may be pinched | interposed between 12.

  As shown in FIG. 2, a bracket 20 as an attachment member formed by bending a metal plate is fixed to the upper end portion of the connecting frame portion 18 by, for example, welding. The bracket 20 bulges in a trapezoidal shape so that the front end facing the lower surface of the connecting door frame portion 13 (the front side facing the upper opening 3) is separated from the connecting door frame portion 13 to form an attachment portion 20 a. At the same time, a screw hole 20b penetrating the central portion of the mounting portion 20a is formed. The bracket 20 is in contact with the connecting door frame portion 13 above and below the screw hole 20b. The connecting door frame portion 13 has an insertion hole 13a that opens concentrically with the screw hole 20b. A mortar-shaped counterbore 13b is provided at the periphery of the insertion hole 13a.

  The threaded portion of the fastening bolt 21 is inserted through the insertion hole 13a toward the screw hole 20b. The bracket 20 is fastened to the connecting door frame portion 13 (rear frame portion 5b) by tightening the screw portion of the fastening bolt 21 inserted through the insertion hole 13a into the screw hole 20b. That is, the glass guide rail 6 is coupled to the rear frame portion 5b by the bracket 20 fixed to the upper end portion of the connection frame portion 18 being fastened to the connection door frame portion 13 by the fastening bolt 21. Direct interference with the side frame portion 5b is suppressed. At this time, the head portion of the fastening bolt 21 is accommodated in the counterbore 13a, so that unnecessary protrusions are prevented from occurring on the upper surface (the rear side surface opposite to the upper opening 3) of the connecting door frame portion 13. Has been.

  A substantially triangular box-shaped sealing member 30 is interposed between the upper end portion of the glass guide rail 6 and the rear frame portion 5b. The seal member 30 has an upper seal portion 31 that is in liquid-tight (elastic) contact with the lower surface of the connection door frame portion 13 above the glass guide rail 6 (connection frame portion 18). The upper seal portion 31 is formed in a triangular block shape having an acute angle formed by the upper end portion of the glass guide rail 6 and the rear frame portion 5b. And the sealing member 30 has the lower side seal part 32 extended below along the opposing surface (front side surface) which faces the 2nd opening part 3b from the upper side seal part 31. FIG. The lower seal portion 32 is in liquid-tight contact with the upper end portion of the upper surface of the connection frame portion 18 (the front side surface facing the second opening 3b).

  Further, as shown in FIG. 1, the seal member 30 includes an outer seal portion 33 that comes into liquid-tight contact with the inner surface of the outer door frame portion 11 and the outer surface of the outer frame portion 16, and the inner surface of the inner door frame portion 12. And an inner seal portion 34 in liquid-tight contact with the outer surface of the inner frame portion 17. The outer seal portion 33 and the inner seal portion 34 extend from the upper seal portion 31 to the lower side of the lower seal portion 32, respectively, and extend over the entire length of the upper seal portion 31 and the lower seal portion 32. Are connected to the edge of each. The outer seal portion 33 and the inner seal portion 34 cover the entire acute gap formed between the upper end portion of the glass guide rail 6 and the rear frame portion 5b from the vehicle width direction outer side and the inner side, respectively.

  Therefore, the groove shape that the glass guide rail 6 forms on the second opening 3b side (front side) by the outer frame portion 16, the inner frame portion 17, and the connecting frame portion 18 is the upper seal portion 31, the lower seal portion 32, The outer seal portion 33 and the inner seal portion 34 are liquid-tightly separated from the first opening 3a. Thereby, for example, even if water such as rainwater that has entered the second opening 3b above the glass guide rail 6 flows into the rear frame portion 5b, the water flows from the rear frame portion 5b above the glass guide rail 6. Without entering the first opening 3a, the first guide 3 is guided to the glass guide rail 6 through the seal member 30 (upper seal 31 or the like).

  As shown in FIG. 1 (c), the seal member 30 includes a lower seal portion 32, a side facing the inner seal portion 34 of the outer seal portion 33, and a side facing the outer seal portion 33 of the inner seal portion 34. And a pair of projecting walls 35 arranged side by side. These protruding walls 35 form a groove-shaped drainage flow path 36 that is narrower than the width between the outer seal portion 33 and the inner seal portion 34. Therefore, for example, rainwater or the like led between the outer seal portion 33 and the inner seal portion 34 in the second opening 3b can be used below the lower seal portion 32 (the glass guide rail 6) by using the drainage channel 36. ) Is discharged smoothly.

  Further, as shown in FIGS. 1A and 1B, the seal member 30 is in liquid-tight contact with the connecting door frame portion 13 of the outer seal portion 33 and the inner seal portion 34 below the upper seal portion 31. And a plurality of linear ribs 37 that bridge between the leading ends. As shown in FIG. 2, the seal member 30 bulges in a trapezoidal shape toward the connecting frame portion 18 with the lowermost rib 37 and the adjacent rib 37 as a base end, and contacts the lower surface of the connecting frame portion 18. A support wall 38 is in contact therewith. The support wall 38 is connected to the outer seal portion 33 and the inner seal portion 34 on the outer side and the inner side in the vehicle width direction, respectively, and reinforces the outer seal portion 33 and the inner seal portion 34. The upper adjacent ribs 37 including the uppermost portion are integrally connected by an extension wall 38 a extending upward from the base end of the support wall 38 along the connecting door frame portion 13. These ribs 37, together with the upper seal portion 31, the outer seal portion 33, and the inner seal portion 34, surround the bracket 20 (attachment portion 20 a) and the fastening portion of the connection door frame portion 13, and the lower surface of the connection door frame portion 13. Contact closely. The ribs 37 and the like are brought into close contact with the connecting door frame portion 13 by the fastening force of the fastening bolt 21.

  As shown in FIGS. 1 (a) and 1 (b), the bracket 20 has a fitting protrusion 20c that protrudes toward the inner seal portion 34 (in the vehicle width direction) at its lower end. On the other hand, the inner seal portion 34 has a fitting groove 39 as a fitting recess into which the fitting protrusion 20c is fitted. The fitting groove 39 is formed in a substantially U shape opened downward, and is engaged with the fitting protrusion 20c to lock it. Therefore, since the sealing member 30 is temporarily assembled to the bracket 20 (glass guide rail 6) by fitting the fitting groove 39 to the fitting protrusion 20c, the subsequent joining of the bracket 20 and the rear frame portion 5b is performed. The work is facilitated.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In the present embodiment, the coupling portion between the rear frame portion 5b and the glass guide rail 6 is a seal member 30 that integrally includes an upper seal portion 31, a lower seal portion 32, an outer seal portion 33, and an inner seal portion 34. Thus, the first and second openings 3a and 3b are covered with each other in a liquid-tight manner. For example, even if water such as rainwater that has entered the second opening 3b above the glass guide rail 6 flows into the rear frame 5b, the water flows from the rear frame 5b above the glass guide rail 6 to the second frame 3b. The glass guide rail 6 is guided through the seal member 30 without entering the first opening 3a. Therefore, without increasing the number of parts, the sealing member 30 that is a single part can prevent water such as rainwater that has entered the second opening 3b from entering the first opening 3a and leaking into the vehicle interior. . Moreover, it can suppress that an external appearance is impaired by exposure of the sealing member 30 grade | etc., By covering and concealing the 1st opening part 3a from the vehicle outer side with the glass guide rail 6 and the sealing member 30 by the garnish 8. FIG.

  In addition, the second opening 3b bordered by the rear frame 5b and the garnish 8 can increase the sense of unity as a window frame by matching the outer shape of the door window glass DW that opens and closes the second opening 3b. Can be further improved.

  (2) In the present embodiment, in the lower seal portion 32, a groove-shaped drainage flow path 36 that is narrower than the width between the outer seal portion 33 and the projection wall 35 is formed by the pair of projection walls 35. Therefore, for example, water such as rainwater that has entered between the outer seal portion 33 and the inner seal portion 34 in the second opening 3b is below the lower seal portion 32 (the glass guide rail 6) using the drainage channel 36. And can be discharged smoothly.

  (3) In the present embodiment, the rib 37 that comes into liquid-tight contact with the connection door frame portion 13 comes into close contact with the connection door frame portion 13 by the fastening force of the fastening bolt 21, and the bracket is surrounded by the rib 37 and the like. The waterproofness of the fastening part of 20 and the connection door frame part 13 can be improved. Further, the upper end portion of the glass guide rail 6 is not directly connected to the rear frame portion 5b, but is connected via the bracket 20, so that the glass guide rail 6 and the rear frame portion 5b are directly interfered with each other. Can be suppressed. And it can suppress that the glass guide rail 6 and the back side frame part 5b contact, for example and generate | occur | produce an abnormal noise.

  (4) In this embodiment, the seal member 30 is temporarily assembled to the bracket 20 by fitting the fitting groove 39 into the fitting protrusion 20c. Therefore, the bracket 20 (glass guide rail 6) can be smoothly coupled to the rear frame portion 5b with the seal member 30 being substantially supported.

  (5) In this embodiment, the connection door frame part 13 has the counterbore 13b which accommodates the head of the fastening bolt 21, so that an unnecessary protrusion is generated on the upper surface side of the connection door frame part 13, for example. It can be avoided. Thereby, another member (fixed panel etc.) can be smoothly arrange | positioned at the upper surface (1st opening part 3a) of the connection door frame part 13. As shown in FIG.

In addition, you may change the said embodiment as follows.
In the embodiment, a rib that concentrates liquid-tight contact with the inner surface of the outer door frame portion 11 may be disposed on the outer surface of the outer seal portion 33.

-You may apply this invention to the front door as a vehicle door.
Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
(A) In the vehicle door frame seal structure according to claim 1 or 2,
The partition frame is coupled to the door frame by fastening an attachment member fixed to an upper end portion of the connection frame portion to the connection door frame portion by a fastening member,
The seal member includes a rib that is in liquid-tight contact with the connection door frame portion in a state in which the fastening portion of the attachment member and the connection door frame portion is enclosed with the upper seal portion, the outer seal portion, and the inner seal portion. A vehicle door frame seal structure comprising: According to the same configuration, the rib that is in liquid-tight contact with the connection door frame portion comes into close contact with the connection door frame portion by a fastening force of a fastening member, and the attachment member surrounded by the ribs and the like The waterproofness of the fastening part of the connection door frame part can be improved. In addition, since the upper end portion of the partition frame is not directly connected to the door frame but is connected via the mounting member, direct interference between the partition frame and the door frame can be suppressed. For example, it is possible to prevent the partition frame and the door frame from coming into contact and generating abnormal noise.

(B) In the vehicle door frame seal structure described in (A) above,
The mounting member has a fitting protrusion that protrudes toward the inner seal portion side,
The said inner seal part has a fitting recessed part fitted to the said fitting protrusion, The sealing structure of the door frame for vehicles characterized by the above-mentioned. According to this configuration, the seal member is temporarily assembled to the mounting member when the fitting recess fits into the fitting protrusion. Therefore, the attachment member (partition frame) can be smoothly coupled to the door frame while the seal member is substantially supported.

(C) In the vehicle door frame seal structure described in (a) or (b) above,
The said connection frame part has a counterbore which accommodates the head of the said fastening member in the peripheral part of the penetration hole of the said fastening member, The seal structure of the door frame for vehicles characterized by the above-mentioned. According to this configuration, the connection door frame portion has a counterbore that accommodates the head of the fastening member, so that, for example, an unnecessary protrusion on the upper surface side of the connection door frame portion is avoided. Can do.

  DW ... door window glass, 1 ... vehicle door, 3 ... upper opening, 3a ... first opening, 3b ... second opening, 5 ... door frame, 5b ... rear frame, 6 ... glass guide rail (section) Frame), 8 ... Garnish, 11 ... Outer door frame part, 12 ... Inner door frame part, 13 ... Connection door frame part, 16 ... Outer frame part, 17 ... Inner frame part, 18 ... Connection frame part, 30 ... Sealing member 31 ... Upper seal part, 32 ... Lower seal part, 33 ... Outer seal part, 34 ... Inner seal part, 35 ... Projection wall.

Claims (2)

An outer door frame portion disposed on the vehicle outer side, an inner door frame portion disposed on the passenger compartment side, and a connecting door frame portion connecting the outer door frame portion and the inner door frame portion, and a vehicle door A door frame forming an upper opening of the
And the outer frame section and in naphthoquinone frame portion upper end is arranged on the vehicle outer side and the vehicle interior side are disposed between the outer door frame part and the inner door frame section, connects the these outer frame portion and the inner frame portion And a second opening that is coupled to the door frame and bisects the upper opening to form a first opening and a door window glass frame on one side and the other side, respectively. A compartment frame;
A sealing member interposed between the upper end of the partition frame and the door frame;
In a vehicle door frame seal structure comprising the partition frame and the seal member and a garnish that covers the first opening from the outside of the vehicle,
The sealing member is
An upper seal portion in liquid-tight contact with the lower surface of the connecting door frame portion above the partition frame;
A lower seal portion that extends downward from the upper seal portion and liquid-tightly contacts an upper end portion of the facing surface facing the second opening of the connection frame portion;
An outer seal portion in liquid-tight contact with the inner surface of the outer door frame portion and the outer surface of the outer frame portion between the upper seal portion and the lower seal portion;
An inner seal portion that is in liquid-tight contact with the inner surface of the inner door frame portion and the outer surface of the inner frame portion is integrally provided between the upper seal portion and the lower seal portion. Seal structure for vehicle door frame. The vehicle door frame seal structure according to claim 1,
The seal member has a pair of projecting walls arranged in parallel on the lower seal portion on the side of the outer seal portion facing the inner seal portion and on the side of the inner seal portion facing the outer seal portion, respectively. A vehicle door frame seal structure.

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