JP2022006394A - Side door structure - Google Patents

Abstract

To enhance rigidity of a side door window frame and to prevent dropout of an inner garnish at side collision.SOLUTION: A side door structure is provided with an expansion part 61A on an upper part of a sash member 6. The expansion part 61A is formed in slender triangle shape in a vertical direction and includes an upper side first fixing part 611 and a lower side first fixing part 612 which are fixed to an inner panel 4 on an upper end part and a lower end part, respectively and a second fixing part 613 which is fixed to an outer panel 3 at a lower end part of the expansion part 61A in height overlapping at least in a vehicle vertical direction with the lower side first stationary part 612. The sash member 6 is fixed to the inner panel 4 and the outer panel 3 so that a closed cross section structure C is formed on a rear part 21 of a window frame part 2.SELECTED DRAWING: Figure 3

Description

The present invention relates to a side door structure that improves the rigidity of a window frame portion of a vehicle side door.

It is known that the side door of a vehicle has an inner garnish and an outer garnish attached to the rear part of a window frame provided at the upper part of the door body to achieve a design effect.

This type of side door is disclosed in Patent Document 1. In the side door of Document 1, as shown in FIG. 10, the rear portion a of the window frame portion A is composed of an inner panel b and an outer panel c, and a sash member d for supporting and guiding the door glass is provided at the front end portion thereof. The inner garnish e is fixed to the inner panel b, and the outer garnish f is fixed to the outer panel c.

Japanese Unexamined Patent Publication No. 2012-66722

By the way, in the conventional side door structure, the inner panel b and the outer panel c are joined to the rear portion a of the window frame portion A, the inner panel b is extended forward, and the sash member d is attached to the tip portion of the inner panel b. Is fixed. Therefore, in this side door structure, it is difficult to increase the rigidity of the front end portion of the rear portion a of the window frame portion A, and sufficient strength is provided to the window frame portion A in the event of a side collision (hereinafter referred to as a side collision). Cannot be secured. Further, if the rigidity of the front end portion of the rear portion a of the window frame portion A is low, the inner garnish e and the outer garnish f may fall off from the rear portion a of the window frame portion A due to the impact load received on the door body at the time of side collision. be. If the inner garnish e falls off, it may cause harm to the occupants.

The present invention solves such a conventional problem, and in this kind of side door structure, it improves the rigidity of the window frame portion of the side door, and at the same time, it is an inner from the rear portion of the window frame portion at the time of side collision. The purpose is to prevent the garnish from falling off, to eliminate the risk of harm to the occupants, or to significantly reduce the risk.

In order to achieve the above object, the side door structure of the present invention is:
A window frame portion (2) composed of a door body (1) constituting the lower part of the side door (D) of the vehicle, an outer panel and an inner panel, and having a window opening (20) provided in the upper part of the door body. A sash member (6) is arranged at the front end of the rear portion of the window frame portion, and the sash member (6) exhibits a U-shaped or L-shaped cross-sectional shape and exhibits a window in the window opening (20). It has a guide (5) that supports and guides the glass, and the sash upper portion (61) of the sash member extends upward from the belt line (L) of the window frame portion and extends to the rear portion of the window frame portion. The sash lower portion (62) of the sash member (6) extends downward from the belt line (L) of the window frame portion into the door body, and the sash member guides the guide forward in the vehicle front-rear direction. In the side door structure installed so that it faces
The upper portion (61) of the sash is provided with an extension portion (61A) that projects rearward in the front-rear direction of the vehicle.
The length of the expansion portion (61A) in the vehicle front-rear direction is gradually increased from the upper end of the expansion portion to the lower end of the expansion portion, and the upper end of the expansion portion and the lower end of the expansion portion are respectively rearward in the vehicle front-rear direction. It has an upper first fixing portion (611) and a lower first fixing portion (612) that are projected and fixed to the inner panel, and at least the vehicle is up and down with respect to the lower first fixing portion at the lower end of the expansion portion. It has a second fixing portion (613) that is provided so as to overlap in the direction and is fixed to the outer panel.
In the rear portion of the window frame portion (2), the sash member is fixed to the inner panel via the upper first fixing portion (611) and the lower first fixing portion (612), and the second is fixed. A closed cross-sectional structure (C) is formed by fixing to the outer panel via a fixing portion.
The gist is that.

The side door structure of the present invention has the following special effects unique to the present invention.
At the rear of the window frame portion, the sash member has high rigidity against an impact from the side surface of the vehicle due to the U-shaped or L-shaped cross-sectional shape of the guide, and is not easily bent and deformed. By fixing this sash member to the inner panel, the rigidity of the inner panel in the vehicle width direction can be further improved. Further, the upper expansion portion of the sash member installed between the rear portion of the window frame portion and the door body is gradually formed longer from the upper end portion to the lower end portion, and has a so-called tapered shape. As a result, the strength of the sash member at the lower end of the window frame, where the impact from the side of the vehicle is large and stress tends to concentrate, can be further improved by suppressing the increase in weight, and the deformation of the inner panel is more effective. Can be suppressed. Further, this sash member is also fixed to the outer panel, and a closed cross-sectional structure is formed at the rear portion of the window frame portion, so that the window frame portion receives an impact load in the vehicle width direction at the time of a side collision. The rigidity can be further improved.
Therefore, according to this side door structure, the rigidity of the window frame portion of the side door can be improved and the deformation can be reduced, and the possibility of causing harm to the occupant due to the deformation of the window frame portion is eliminated or the risk thereof is significantly increased. Can be reduced.

(A) Side view of the door body on the outer panel side (b) Side view of the door body on the inner panel side Side view of the main part showing the configuration of the main part of the side door structure (A) sectional view taken along line AA of FIG. 2 (b) sectional view taken along line BB of FIG. 2 (c) sectional view taken along line CC of FIG. (A) Side view of the sash member (b) Front view of the sash member Side view of the main part showing the configuration of the main part of the side door structure Side view of the main part showing the configuration of the main part of the side door structure Side view of the main part showing the configuration of the main part of the side door structure Side view of the main part showing the configuration of the main part of the side door structure Side view of the main part showing the configuration of the main part of the side door structure Planar cross-sectional view showing the configuration of the main part of the conventional side door structure

As shown in FIGS. 1, 2 and 3, in the side door structure according to the embodiment of the present invention, the rear portion 21 of the window frame portion 2 is composed of the outer panel 3 and the inner panel 4, and the window frame portion 2 is formed. A sash member 6 having a guide 5 for supporting and guiding the window glass is provided at the front end of the rear portion 21. The guide 5 exhibits a U-shaped or L-shaped cross-sectional shape. In the sash member 6, the upper portion 61 of the sash extends upward from the belt line L of the window frame portion 2 to the rear portion 21 of the window frame portion 2, and the lower portion 62 of the sash (see FIG. 4) extends from the belt line L of the window frame portion 2. It extends downward into the door body 1 and the guide 5 is installed toward the front in the front-rear direction of the vehicle.
In this side door structure, the sash member 6 having high rigidity against an impact from the side surface of the vehicle due to the U-shaped or L-shaped cross-sectional shape of the guide 5 and being hard to bend and deform is fixed to the inner panel 4, and the inner panel 4 is fixed. The rigidity in the vehicle width direction is further improved. Further, the upper expansion portion 61A of the sash member 6 is formed in a so-called tapered shape that is gradually longer from the upper end portion to the lower end portion. Due to this tapered shape, the strength of the sash member 6 at the lower end of the window frame portion 2 where the impact from the side surface of the vehicle is large and stress tends to concentrate is further improved by suppressing the increase in weight, and the inner panel 4 is deformed. Suppress more effectively. Then, the sash member 6 is fixed to the outer panel 3, and the closed cross-sectional structure C is formed in the rear portion 21 of the window frame portion 2. The closed cross-sectional structure C improves the rigidity of the window frame portion 2 against an impact load in the vehicle width direction received by the side door D at the time of a side collision.
As described above, in this side door structure, the sash member 6 is provided with a reinforcing structure, and the sash member 6 is fixed to the inner panel 4 and the outer panel 3, so that no special reinforcing member is added to the window frame portion 2. , The rigidity of the window frame portion 2 is improved to reduce the deformation. In this way, the possibility of causing harm to the occupant due to the deformation of the window frame portion 2 is eliminated, or the risk thereof is significantly reduced.

As shown in FIG. 1, the side door structure according to the embodiment of the present invention includes a door body 1 constituting the lower part of the side door D of the vehicle, an outer panel 3 and an inner panel 4, and the door body 1 It is configured to include a window frame portion 2 having a window opening 20 provided on the upper part of the door. A sash member 6 is arranged at the front end of the rear portion 21 of the window frame portion 2. As shown in FIG. 3, the sash member 6 has a U-shaped or L-shaped cross-sectional shape and has a guide 5 that supports and guides the window glass in the window opening 20. As shown in FIG. 2, the sash upper portion 61 of the sash member 6 extends upward from the belt line L of the window frame portion 2 and extends to the rear portion 21 of the window frame portion 2, and the sash lower portion 62 of the sash member 6 (FIG. 4). (See) extends downward from the belt line L of the window frame portion 2 into the door body 1, and the sash member 6 is installed so that the guide 5 faces the front in the front-rear direction of the vehicle.

In this side door structure, as shown in FIG. 4, the sash upper portion 61 is provided with an extension portion 61A that projects rearward in the front-rear direction of the vehicle.

The length of the expansion portion 61A in the vehicle front-rear direction is gradually increased from the upper end of the expansion portion 61A of the expansion portion 61A toward the lower end of the expansion portion 61A.

Upper first fixing portion 611 (see FIG. 3A) and lower first fixing portion 612 (see FIG. 3A) that are projected rearward in the vehicle front-rear direction and fixed to the inner panel 4 at the upper end of the expansion portion 61A and the lower end of the expansion portion 61A, respectively. 3 (c)).

As shown in FIG. 5, a second fixing portion 613 is provided at the lower end of the expansion portion 61A so as to overlap the lower first fixing portion 612 at least in the vertical direction of the vehicle and is fixed to the outer panel 3 (FIG. 3 (c). )).

In this way, in the rear portion 21 of the window frame portion 2, the sash member 6 is fixed to the inner panel 4 via the upper first fixing portion 611 and the lower first fixing portion 612, and the sash member 6 is fixed to the inner panel 4 via the second fixing portion 613. It is formed into the closed cross-sectional structure C by being fixed to the outer panel 3.

As described above, in this side door structure, the sash member 6 at the rear portion 21 of the window frame portion 2 has high rigidity against an impact from the side surface of the vehicle due to the U-shaped or L-shaped cross-sectional shape of the guide 5, and is bent and deformed. Hateful. By fixing the sash member 6 to the inner panel 4, the rigidity of the inner panel 4 in the vehicle width direction can be further improved. Further, the expansion portion 61A of the sash upper portion 61 of the sash member 6 installed between the rear portion 21 of the window frame portion 2 and the door body 1 is gradually formed longer from the upper end portion to the lower end portion, and has a so-called tapered shape. ing. As a result, the strength of the sash member 6 at the lower end of the window frame portion 2 where the impact from the side surface of the vehicle is large and stress tends to concentrate can be further improved by suppressing the increase in weight, and the inner panel 4 is deformed. Can be suppressed more effectively. Further, the sash member 6 is also fixed to the outer panel 3, and a closed cross-sectional structure C is formed in the rear portion 21 of the window frame portion 2. As a result, the rigidity of the window frame portion 2 can be further improved against the impact load in the vehicle width direction received by the side door D at the time of side collision.
Therefore, according to this side door structure, the rigidity of the window frame portion 2 of the side door D can be improved to reduce the deformation, and there is no possibility that the deformation of the window frame portion 2 causes harm to the occupant, or the deformation thereof is eliminated. The risk can be significantly reduced.

Further, as shown in FIG. 2, this side door structure has an inner garnish mounting portion on the vehicle interior side surface between the rear end portion of the window opening 20 of the window frame portion 2 and the rear portion 21 of the window frame portion 2. 22 is formed. As shown in FIG. 3, the inner garnish 7 has a first locking portion 71, 72 (upper first locking portion 71, lower first locking portion 72) and a second locking portion 73, 74 (upper first locking portion 72). It has two locking portions 73 and a lower second locking portion 74). As shown in FIGS. 2 and 3, the first locking portions 71 and 72 are arranged at the front end of the inner garnish 7 on the surface facing the inner garnish mounting portion 22, and the sash member 6 is arranged on the upper portion of the inner garnish 7 and in the vertical direction of the vehicle. It is provided at the lower part of the inner garnish 7 above the second fixing portion 613 and close to the second fixing portion 613. These first locking portions 71 and 72 are fixed to the inner side surface of the sash member 6 in the vehicle width direction. As shown in FIGS. 2 and 3, the second locking portions 73 and 74 are arranged at the rear end of the inner garnish 7 on the surface facing the inner garnish mounting portion 22, and are sash members in the upper part of the inner garnish 7 and in the vehicle vertical direction. It is provided at the lower part of the inner garnish 7 above the lower first fixing portion 612 of 6 and close to the lower first fixing portion 612. These second locking portions 73 and 74 are fixed to the inner side surface of the inner panel 4 in the vehicle width direction.
In this way, as shown in FIGS. 2 and 3, the inner garnish 7 is fixed to the sash member 6 at the upper and lower first locking portions 71 and 72, and the inner panel is fixed at the upper and lower second locking portions 73 and 74. It is fixed to 4.

As described above, in this side door structure, as described above, the closed cross-sectional structure C on the belt line L side of the rear portion 21 of the window frame portion 2 improves the rigidity of the lower side of the window frame portion 2 and is above the belt line L. Deformation of the window frame portion 2 of the above is suppressed. As a result, the inner panel 4 has improved rigidity against a load in the vehicle width direction and is less likely to be deformed by an impact from the side surface of the vehicle. , 74 are less likely to come off from the sash member 6 and the inner panel 4, respectively. This makes it possible to prevent the inner garnish 7 from falling off from the rear portion 21 of the window frame portion 2 at the time of a side collision.

Further, in the case of this side door structure, as shown in FIG. 6, the upper first fixing portion 611, the lower first fixing portion 612, and the second fixing portion 613 of the sash member 6 have an inner garnish 7 in the vehicle front-rear direction. It is arranged between the first locking portions 71 and 72 (see FIGS. 2 and 3) and the second locking portions 73 and 74 above and below.
With such an arrangement, the sash member 6 having higher rigidity due to the U-shaped or L-shaped cross-sectional shape of the guide 5 and the closed cross-sectional structure C on the belt line L side of the rear portion 21 of the window frame portion 2 have higher rigidity. The inner garnish 7 is locked to the inner panel 4 by the first locking portions 71 and 72 and the second locking portions 73 and 74 (see FIGS. 3 and 6). That is, the locked portions 614 and 615 (see FIG. 3) provided on the sash member 6 side and the locked portions 414 and 415 (see FIG. 6) provided on the inner panel 4 side are less likely to be deformed, respectively. There is. Therefore, it is possible to prevent stress concentration on the first locking portions 71, 72 and the second locking portions 73, 74 (see FIGS. 3 and 6) of the inner garnish 7. Therefore, due to the impact at the time of side collision, the locking portions 71, 72, 73, 74 (see FIGS. 3 and 6) of the inner garnish 7 are hard to come off, and the inner garnish 7 is hard to come off. Further, since the locked portions 614, 615, 414, 415 on the sash member 6 side and the inner panel 4 side are not easily deformed, the inner garnish 7 due to the deformation of the locked portions 614, 615, 414, 415. It is possible to prevent the occurrence of breakage. As a result, it is possible to eliminate or significantly reduce the risk of harm to the occupant due to the end portion or the broken portion of the inner garnish 7.

Further, in this side door structure, as shown in FIG. 7, the surface of the inner panel 4 on the vehicle interior side is fixed to the door trim 9 below the belt line L of the window frame portion 2. The lower end of the inner garnish 7 has a third locking portion 75 fixed to the door trim 9 on the surface facing the door trim 9, and the lower end of the inner garnish 7 is fixed to the door trim 9 by the third locking portion 75. ..

In this way, the lower end of the inner garnish 7 is fixed to the door trim 9 by the third locking portion 75, so that the lower end of the inner garnish 7 comes off from the door trim 9 due to the impact at the time of a side collision and protrudes to the vehicle interior side. Can be prevented. This makes it possible to eliminate or significantly reduce the risk of harm to the occupants due to the inner garnish 7.

The figures used in the description of this embodiment also show each part of the side door structure more specifically as an example of each. Since the door body 1 and the window frame portion 2 (excluding the rear portion 21 of the window frame portion 2) have a general structure, the description thereof will be omitted here.

As shown in FIG. 3, the rear portion 21 of the window frame portion 2 is composed of an outer panel 3 and an inner panel 4, and the outer panel 3 and the inner panel 4 are joined to each other, and the front end portion thereof is extended forward in the front-rear direction of the vehicle. The front end portion of the outer panel 3 extends to the front end portion of the rear portion 21 of the window frame portion 2, in other words, to the rear end portion of the window opening 20 of the window frame portion 2. The front end portion of the inner panel 4 extends to the vicinity of the front end portion of the rear portion 21 of the window frame portion 2, in other words, to the vicinity of the rear end portion of the window opening 20 of the window frame portion 2.

At the rear end of the window opening 20 of the window frame portion 21, a sash member 6 extending in the vertical direction across the belt line of the window frame portion 2 is installed.
As shown in FIG. 4, the sash member 6 is integrally formed by resin molding, and includes a guide 5, an expansion portion 61A, and a plurality of fixing portions 611, 612, and 613.

In this case, the guide 5 is a member extending in the vertical direction having a U-shaped cross-sectional shape. Of course, the guide 5 may have an L-shaped cross section. The upper part of the guide 5 extends upward from the belt line of the window frame portion 2 to the rear portion 21 of the window frame portion 2, and the lower portion extends downward from the belt line of the window frame portion 2 into the door body 1. It is a part. Thus, the guide 5 is arranged at the rear end of the window opening 20 of the window frame portion 2 with the open surface of the guide 5 facing forward in the front-rear direction of the vehicle, and supports the window glass arranged so as to be able to move up and down in the window opening 20. invite.

Further, in this case, the expansion portion 61A projects to the upper part of the guide 5 in the front-rear direction of the vehicle. The extension portion 61A has a short length in the front-rear direction of the vehicle at the upper end portion, is formed gradually longer from the upper end portion to the lower end portion, and has an elongated triangular shape in the vertical direction in the side view. The upper first fixing portion 611 and the lower first fixing portion 612 fixed to the inner panel 4 on the trailing edge of the upper end and the trailing edge of the lower end of the expansion portion 61A have a semi-race track shape rearward in the front-rear direction of the vehicle, respectively. It is provided so as to protrude from the surface. In this case, the upper first fixing portion 611 and the lower first fixing portion 612 are provided with bolt insertion holes. Further, the second fixing is fixed to the outer panel at the lower end of the side surface of the expansion portion 61A at the same height in the vertical direction of the vehicle or at a height at least partially overlapping the lower first fixing portion 612 and closer to the guide 5. A section 613 is provided. In this case, the second fixing portion 613 is provided with a bolt insertion hole.

In this way, as shown in FIGS. 3A and 3C, the sash member 6 is fixed to the inner panel 4 by the upper first fixing portion 611 and the lower first fixing portion 612, in this case, by bolts. In this case, the second fixing portion 613 is fixed to the outer panel 3 and the outer garnish 8 by bolts. In this case, the nut of the second fixing portion 613 is held by the outer garnish 8, and the sash member 6, the outer panel 3, and the outer garnish 8 are jointly fastened by the bolts and nuts. As a result, the closed cross-sectional structure C is formed in the rear portion 21 of the window frame portion 2 by the sash member 6, the outer panel 3, and the inner panel 4.

As described above, the sash member 6 at the rear portion 21 of the window frame portion 2 has high rigidity against an impact from the side surface of the vehicle due to the U-shaped or L-shaped cross-sectional shape of the guide 5, and is not easily bent and deformed. By fixing the sash member 6 to the inner panel 4, the rigidity of the inner panel 4 in the vehicle width direction can be further improved. Further, the upper expansion portion 61A of the sash member 6 is gradually formed longer from the upper end portion to the lower end portion, and has a so-called tapered shape in an elongated triangular shape in the vertical direction. As a result, the strength of the sash member 6 at the lower end of the window frame portion 2 where the impact from the side surface of the vehicle is large and stress tends to concentrate can be further improved by suppressing the increase in weight, and the inner panel 4 is deformed. Can be suppressed more effectively. Further, the sash member 6 is also fixed to the outer panel 3 and the outer garnish 8 to form a closed cross-sectional structure C at the rear portion 21 of the window frame portion 2, so that an impact in the vehicle width direction received by the side door D at the time of a side collision is received. The rigidity of the window frame portion 2 can be further improved with respect to the load.
Therefore, according to this side door structure, the rigidity of the window frame portion 2 of the side door D can be improved to reduce the deformation, and there is no possibility that the deformation of the window frame portion 2 causes harm to the occupant, or the deformation thereof is eliminated. The risk can be significantly reduced.

As shown in FIG. 5, the inner garnish mounting portion 22 is provided on the vehicle interior side surface between the rear end portion of the window opening 20 of the window frame portion 2 and the vehicle front-rear intermediate portion of the rear portion 21 of the window frame portion 2. It is formed. In this case, the inner garnish mounting portion 22 is provided on the inner surface of the sash member 6 in the vehicle width direction and the inner surface of the inner panel 4 in the vehicle width direction. The inner garnish mounting portion 22 is covered with the first locking portions 71 and 72 (see FIG. 3) above and below the front end portion of the mounting surface of the inner garnish 7 and the second locking portions 73 and 74 above and below the rear end portion. Locking portions 614, 615, 414, 415 are provided. In this case, locked portions 614 and 615 are provided above and below the inner surface of the sash member 6 in the vehicle width direction corresponding to the first locking portions 71 and 72 above and below the front end portion of the mounting surface of the inner garnish 7. Be done. In this case, pin engagement holes are provided in the locked portions 614 and 615. Further, in this case, a plurality of ribs 63 are formed in the vertical direction and the horizontal direction on the inner side surface of the sash member 6 in the vehicle width direction, and the locked portions 614 and 615 are reinforced. Due to this reinforcement, the sash member 6 is less likely to bend in the direction in which the locked portions 614, 615 and the locked portions 71, 72 are disengaged. Further, these ribs 63 are connected to the outer peripheral portion of the design of the inner garnish 7, and the strength of the formed surfaces of the locked portions 614 and 615 is increased. Locked portions 414 and 415 are provided above and below the inner surface of the inner panel 4 in the vehicle width direction corresponding to the second locking portions 73 and 74 above and below the rear end portion of the mounting surface of the inner garnish 7. In this case, pin engagement holes are provided in the locked portions 414 and 415. The mounting surface of the inner garnish 7 is a surface facing the inner garnish mounting portion 22 when the inner garnish 7 is mounted. First locking portions 71 and 72 (see FIG. 3) fixed to the inner side surface of the sash member 6 in the vehicle width direction are provided at the upper and lower portions of the front end portion of the mounting surface, respectively. In this case, locking pins are provided on the first locking portions 71 and 72. Further, in this case, the lower first locking portion 72 is provided closer to the second fixing portion 613 above the second fixing portion 613 of the sash member 6 in the vertical direction of the vehicle. Second locking portions 73 and 74 fixed to the inner side surface of the inner panel 4 in the vehicle width direction are provided at the upper and lower portions of the rear end portion of the mounting surface, respectively. In this case, locking pins are provided on the second locking portions 73 and 74, respectively. Further, in this case, the lower second locking portion 74 is provided closer to the lower first fixing portion 612 above the lower first fixing portion 612 of the sash member 6 in the vertical direction of the vehicle. In this way, the inner garnish 7 is attached to the inner garnish mounting portion 22 by engaging the respective locking portions 71, 72, 73, 74 with the locked portions 614, 615, 414, 415.

As described above, in the inner garnish 7, the first locking portions 71, 72 and the second locking portions 73, 74 of the front end portion and the rear end portion are inside the vehicle width direction inner surface of the sash member 6 and the vehicle width direction of the inner panel 4. Locked to the side. As shown in FIG. 7, the sash member 6 has high rigidity due to the U-shaped or L-shaped cross-sectional shape of the guide 5, and the inner panel 4 has a closed cross-sectional structure C on the beltline side of the rear portion 21 of the window frame portion 2. , Has high rigidity. As a result, the locked portions 614, 615, 414, and 415 provided on the sash member 6 side and the inner panel 4 side are not easily deformed, and the first locking portions 71, 72 and the second locking portions 73 of the inner garnish 7 are not easily deformed. , 74 can be prevented from concentrating stress. Therefore, due to the impact at the time of side collision, the first locking portions 71, 72 and the second locking portions 73, 74 of the inner garnish 7 are less likely to come off from the sash member 6 and the inner panel 4, and the inner garnish 7 is less likely to fall off. .. Further, since the locked portions 614, 615, 414, and 415 on the sash member 6 side and the inner panel 4 side are not easily deformed, the inner garnish 7 due to the deformation of the locked portions 614, 615, 414, and 415. It is possible to prevent the occurrence of breakage. As a result, it is possible to eliminate or significantly reduce the risk of harm to the occupant due to the end portion or the broken portion of the inner garnish 7.

Further, in this case, as shown in FIG. 6, the upper first fixing portion 611 and the second fixing portion 613 of the expansion portion 61A of the sash member 6 are the upper first locking portion 71 of the inner garnish 7 in the vehicle front-rear direction. It is arranged between the virtual line connecting the lower first locking portion 72 and the virtual line connecting the upper second locking portion 73 and the lower second locking portion 74. In this way, the locking portions 71, 72, 73, 74 of the inner garnish 7 are around the fixed point between the sash member 6 and the inner panel 4 and around the fixed point between the sash member 6, the outer panel 3 and the outer garnish 8. Placed in. By doing so, it is possible to minimize the movement of each locking point of the inner garnish 7 with respect to the external input and prevent the locking point from coming off.

As shown in FIG. 8, in the rear portion 21 of the window frame portion 2, the inner panel 4 is fixed to the door trim 9 on the vehicle interior side surface below the belt line L of the window frame portion 2. The lower end of the inner garnish 7 has a third locking portion 75 fixed to the door trim 9 on the surface facing the door trim 9, and the lower end of the inner garnish 7 is fixed to the door trim 9 by the third locking portion 75.

In this way, the inner panel 4 of the rear portion 21 of the window frame portion 2 is fixed to the door trim 9, and the lower end of the inner garnish 7 is fixed to the door trim 9 by the third locking portion 75. As a result, it is possible to prevent the lower end of the inner garnish 7 from coming off the door trim 9 due to the impact at the time of a side collision and protruding toward the vehicle interior side. Therefore, it is possible to eliminate or significantly reduce the risk of harm to the occupants by the inner garnish 7.

As described above, according to this side door structure, as described above, the rigidity of the window frame portion 2 of the side door D can be improved and the deformation can be reduced, and the inner portion 21 from the rear portion 21 of the window frame portion 2 can be reduced. It is possible to prevent the garnish 7 from falling off. Therefore, it is possible to eliminate or significantly reduce the risk of harm to the occupants due to the deformation of the window frame portion 2 or the dropping of the inner garnish 7. Further, this structure has the following advantages.
(1) In this structure, the inner garnish 7 is formed on the vehicle interior side surface between the rear end portion of the window opening 20 of the window frame portion 2 and the vehicle front-rear direction intermediate portion of the rear portion 21 of the window frame portion 2. It is attached to the inner garnish mounting portion 22 to be mounted by engaging each locking portion with each locked portion. In this case, the engagement between the upper and lower first locking portions 71 and 72 of the inner garnish 7 and the upper and lower locked portions 614 and 615 of the sash member 6, and the second engagement of the upper and lower rear ends of the inner garnish 7. It is attached by engaging the stoppers 73 and 74 with the upper and lower locked portions 414 and 415 of the inner panel 4. In this way, the first locking portions 71 and 72 above and below the front end portion of the inner garnish 7 and the upper and lower locked portions 614 and 615 of the sash member 6 are engaged with each other, and the inner garnish 7 and the inner garnish mounting portion 22 are engaged with each other. By increasing the number of engagement points, the holding force of the inner garnish 7 can be increased. Further, the upper and lower front ends and the upper and lower rear ends of the inner garnish 7, that is, the vicinity of the peripheral end of the inner garnish 7 are formed by the first locking portions 71 and 72 and the second locking portions 73 and 74 to form the sash member 6. Since it is attached to the inner panel 4, the holding power of the inner garnish 7 can be improved. By improving the holding force of the inner garnish 7, it is possible to more reliably prevent the inner garnish 7 from falling off due to an impact at the time of a side collision.
(2) In this structure, the upper first locking portion 71 and the upper second locking portion 73 of the inner garnish 7 are arranged in the vicinity of the upper first fixing portion 611 between the sash member 6 and the inner panel 4. By this arrangement, the upper first locking portion 71 minimizes the movement with respect to the external input, and prevents the upper first locking portion 71 and the upper second locking portion 73 of the inner garnish 7 from coming off. Can be done. Further, the lower first locking portion 72 and the lower second locking portion 74 of the inner garnish 7 are arranged close to the closed cross-sectional structure C on the belt line side of the rear portion 21 of the window frame portion 2. Due to the closed cross-sectional structure C on the belt line side of the rear portion 21 of the window frame portion 2, the window frame portion 2 is hardly deformed. By arranging the lower first locking portion 72 and the lower second locking portion 74 of the inner garnish 7 in the vicinity of the closed cross-sectional structure C, the load received by each of the locking portions 72 and 74 is reduced. As a result, it is possible to prevent the lower first locking portion 72 and the lower second locking portion 74 of the inner garnish 7 from coming off due to the impact load at the time of side collision. Therefore, it is possible to prevent the inner garnish 7 from falling off from the rear portion 21 of the window frame portion 2. Then, the sash member 6, the outer panel 3 and the outer garnish 8 are fixed by the second fixing portion 613. By straddling the plurality of parts in this way, the second fixing portion 613 can prevent the entire parts from coming off due to local deformation.
(3) In this structure, a plurality of ribs 63 are provided in the vertical direction and the horizontal direction on the inner side surface of the sash member 6 in the vehicle width direction. As a result, the rigidity of this surface is ensured, and it is difficult to bend even by the impact load at the time of side collision, and it is possible to prevent the locking portions 71 and 72 of the inner garnish 7 from coming off from the locked portions 614 and 615 of the sash member 6. be able to. Further, since these ribs 63 are connected to the outer peripheral portion of the design of the sash member 6, the strength of the surfaces of the locked portions 614 and 615 is ensured against the impact load at the time of side collision. This makes it possible to prevent the locking portions 71 and 72 of the inner garnish 7 from coming off from the locked portions 614 and 615 of the sash member 6.
(4) In this structure, the second fixing portion 613 of the sash member 6 is arranged on the virtual line connecting the lower first locking portion 72 and the third locking portion 75 of the inner garnish 7. The lower first fixing portion 612 of the sash member 6 is arranged on a virtual line connecting the lower second locking portion 74 and the third locking portion 75 of the inner garnish 7. In this way, the first locking portions 71, 72, the second locking portions 73, 74, and the third engaging portion of the inner garnish 7 straddle the upper and lower sides of the closed cross-sectional structure C on the belt line side of the rear portion 21 of the window frame portion 2. A stop 75 is arranged. As a result, the first locking portions 71, 72 and the second locking portions 73, 74 of the inner garnish 7 are less likely to be deformed. The first locking portions 71, 72 and the second locking portions 73, 74 of the inner garnish 7 are stable, and the inner garnish 7 can be prevented from falling off from the rear portion 21 of the window frame portion 2.
(5) In this structure, as shown in FIG. 9, the second fixing portion 613 between the sash member 6, the inner garnish 7 and the outer panel 3 (see FIG. 3) and the lower first portion between the sash member 6 and the inner panel 4 A pad member P is installed between the fixing portion 612 and the inner garnish 7 is attached to the sash member 6 via the pad member P. By interposing the pad member P between the inner garnish 7 and the sash member 6 in this way, an appropriate distance is secured between the inner garnish 7 and the sash member 6, and the inner garnish 7 and the door trim 9 are separated from each other. It is possible to prevent a gap from being formed in the fitting between them, and to reinforce the locking between the inner garnish 7 and the door trim 9 by the third locking portion 75.

In addition, it is possible to replace the components in the above-described embodiment with well-known components as appropriate without departing from the spirit of the present invention.

D Side door 1 Door body 2 Window frame 20 Window opening 21 Rear 22 Inner garnish mounting part 3 Outer panel 4 Inner panel 5 Guide 6 Sash member 61 Sash upper 61A Expansion part 611 Upper first fixing part 612 Lower first fixing part 613 2nd fixing part 62 Sash lower part 7 Inner garnish 71 Upper 1st locking part 72 Lower 1st locking part 73 Upper 2nd locking part 74 Lower 2nd locking part 75 3rd locking part 9 Door trim C Closed cross section Structure P Pad member L Belt line

Claims (4)

A window frame portion (2) composed of a door body (1) constituting the lower part of the side door (D) of the vehicle, an outer panel and an inner panel, and having a window opening (20) provided in the upper part of the door body. A sash member (6) is arranged at the front end of the rear portion of the window frame portion, and the sash member (6) exhibits a U-shaped or L-shaped cross-sectional shape and exhibits a window in the window opening (20). It has a guide (5) that supports and guides the glass, and the sash upper portion (61) of the sash member extends upward from the belt line (L) of the window frame portion and extends to the rear portion of the window frame portion. The sash lower portion (62) of the sash member (6) extends downward from the belt line (L) of the window frame portion into the door body, and the sash member guides the guide forward in the vehicle front-rear direction. In the side door structure installed so that it faces
The upper portion (61) of the sash is provided with an extension portion (61A) that projects rearward in the front-rear direction of the vehicle.
The length of the expansion portion (61A) in the vehicle front-rear direction is gradually increased from the upper end of the expansion portion to the lower end of the expansion portion, and the upper end of the expansion portion and the lower end of the expansion portion are respectively rearward in the vehicle front-rear direction. It has an upper first fixing portion (611) and a lower first fixing portion (612) that are projected and fixed to the inner panel, and at least the vehicle is up and down with respect to the lower first fixing portion at the lower end of the expansion portion. It has a second fixing portion (613) that is provided so as to overlap in the direction and is fixed to the outer panel.
In the rear portion of the window frame portion (2), the sash member is fixed to the inner panel via the upper first fixing portion (611) and the lower first fixing portion (612), and the second is fixed. A closed cross-sectional structure (C) is formed by fixing to the outer panel via a fixing portion.
The side door structure is characterized by that. An inner garnish mounting portion (22) is formed on the vehicle interior side surface between the rear end portion of the window opening portion (20) of the window frame portion and the rear portion (21) of the window frame portion, and the inner garnish (22) is formed. 7) has a first locking portion (71, 72) and a second locking portion (73, 74), and the first locking portion (71, 72) is the inner garnish mounting portion (22). ) At the front end of the inner garnish, and above the inner garnish and in the vertical direction of the vehicle above the second fixing portion (613) of the sash member and in the lower part of the inner garnish near the second fixing portion. The second locking portion (73, 74) is provided and fixed to the inner side surface of the sash member in the vehicle width direction, and the second locking portion (73, 74) is arranged at the rear end of the inner garnish on the surface facing the inner garnish mounting portion, and the upper portion of the inner garnish is provided. And in the vehicle vertical direction, they are provided at the lower part of the inner garnish above the lower first fixing portion of the sash member and close to the lower first fixing portion, and are fixed to the inner side surface of the inner panel in the vehicle width direction. The side door structure according to claim 1, wherein the inner garnish is fixed to the sash member at the first locking portion and fixed to the inner panel at the second locking portion. The upper first fixing portion (611), the lower first fixing portion (612), and the second fixing portion (613) of the sash member are the first locking portion of the inner garnish in the vehicle front-rear direction. The side door structure according to claim 2, which is arranged between the second locking portion and the second locking portion. The surface of the inner panel on the vehicle interior side is fixed to the door trim (9) below the belt line (L) of the window frame portion, and the lower end of the inner garnish (22) is a surface facing the door trim (9). The side according to any one of claims 1 to 3, wherein the inner garnish has a third locking portion fixed to the door trim, and the lower end of the inner garnish is fixed to the door trim by the third locking portion (75). Door structure.

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