JPH0536725Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automobile door structure, and more particularly to an automobile door structure in which a locking portion is provided on the side of a floor panel of a vehicle body.

[Prior Art] As shown in FIGS. 6 and 7, a door body 40 of an automobile is generally composed of a door outer panel 42 and a door inner panel 44, for example, a two-door coupe type door body 40. Now, the front pillar 48 on the vehicle body side is connected via the door hinge 46.
is attached to.

Further, a locker portion 56 constituted by a locker inner panel 52 and a locker outer panel 54 is provided on both sides of the floor panel 50 of the vehicle body, that is, in a portion corresponding to the door body 40. The rocker inner panel 52 and rocker outer panel 54 of the rocker portion 56 are joined to each other to form a closed cross section, thereby improving the rigidity of the vehicle body floor.

In this case, it is preferable to increase the area of the closed cross section of the rocker portion 56 in terms of improving rigidity (particularly vertical bending rigidity), and for this reason, the rocker portion 56 is formed to have a relatively high cross-sectional height dimension. , its upper end is located at a higher position than the floor panel surface (for example, more than 100 mm above).

Therefore, conventional automobiles having such a structure to ensure rigidity have had the disadvantage that the vertical opening width of the vehicle door opening is narrow, making it difficult to get in and out of the vehicle. In this case, simply lock the rocker part 5
If the cross-sectional height of No. 6 is lowered to improve the ease of getting on and off, the bending rigidity will be reduced, which will increase body vibration when the vehicle is running and deteriorate steering stability.

On the other hand, a structure (so-called side sill-less structure) in which rocker portions are not provided on both sides of the floor panel of the vehicle body, that is, the portion corresponding to the door, has also been proposed (as an example, see Utility Model Application Publication No. 105014/1982).

In this vehicle body structure, door sills are provided at the upper and lower portions of the door body, and the door sills are provided with a locking mechanism that engages with the vehicle body when the door is closed. Therefore, the opening width dimension of the vehicle body door opening in the vertical direction is not affected by the rocker portion, and there is an advantage that the door opening is formed wide and ease of getting in and out is improved.

However, in the structure proposed in this publication, the lower door sill to ensure the rigidity of the vehicle body is placed on the side (directly beside) the vehicle floor, so it is not possible to increase the cross-sectional area of the closed section structure. Therefore, the bending rigidity of the vehicle body (particularly the vertical bending rigidity) is still not sufficient.

[Problem to be solved by the invention] Taking the above circumstances into consideration, the present invention aims to obtain a door structure for an automobile that can widen the opening area of the entrance and exit and improve the ease of getting in and out without reducing the rigidity of the vehicle body. is the purpose.

[Means for Solving the Problems] An automobile door structure according to the present invention is an automobile door structure in which a locking portion is provided on the side of a floor panel of a vehicle body, and includes a door outer panel and a door inner panel. , between a portion of the door inner panel facing the front end of the vehicle and the lower part of the pillar, and a portion of the lower end of the door inner panel facing the upper surface of the rocker portion, and toward the passenger compartment side of the door inner panel. , a reinforcing member forming a closed cross section is fixed to the door inner panel, and a lower end of the pillar corresponding to the end of the reinforcing member on the rear side of the vehicle,
The present invention is characterized in that a holding member is disposed that engages and holds the reinforcing member at the rear end of the vehicle when the door is closed.

[Function] In the automobile door structure configured as described above, a closed cross section is formed by the door inner panel and the reinforcing member. This closed cross section is provided between a portion of the door inner panel at the front end of the vehicle that faces the lower part of the pillar and a portion of the lower end of the door inner panel that faces the upper surface of the rocker portion, and furthermore, When the reinforcing member is closed, the holding member engages with and holds the reinforcing member at the rear end of the vehicle.

Therefore, even if the cross-sectional height of the rocker part is reduced, the area of the closed cross-sectional part (the cross section formed by the door inner panel and the reinforcing member and the cross section of the rocker part) can be secured as a whole. This makes it possible to widen the opening area of the entrance and exit and improve ease of entry and exit without reducing the rigidity of the vehicle body.

[Example] Fig. 1 shows a schematic perspective view of a door structure according to an embodiment of the present invention, and Fig. 2 shows a schematic side view of an automobile to which this door structure is applied. ing. Further, FIG. 3 shows a sectional view taken along the line ``-'' in FIG. 2, and FIG. 4 shows a sectional view taken along the line ``--'' in FIG.

A door body 10 is attached to the lower part of the front pillar 16, which is composed of the pillar outer panel 12, reinforcement 14, etc., via a door hinge 18.
are connected to each other, and correspond to the entrance/exit formed above the floor panel 20.

The door body 10 is composed of a door outer panel 22 and a door inner panel 24, and further has a door reinforcement 26 fixed thereto as a reinforcing member. The door reinforcement 26 starts from a portion of the door inner panel 24 facing the lower part of the front pillar 16 at the front end of the vehicle body.
It is continuously fixed to the lower end of the door inner panel 24 toward the passenger compartment side, and the door inner panel 2
4 forms a closed cross-section portion A.

A door hinge 18 is attached to the front end of the vehicle body of the door reinforcement 26 and is connected to the lower part of the front pillar 16. This allows the door body 10 to rotate, allowing entry and exit from the vehicle. The mouth can be opened or closed.

On the other hand, a locking portion 28 is arranged on the vehicle outer side of the floor panel 20 so as to face the door reinforcement 26 (closed section A) in the longitudinal direction of the vehicle body and when the door body 10 is in the closed state. has been done.

The rocker section 28 is composed of a rocker outer panel 30 and a rocker inner panel 32.
Further, a rocker reinforcement 34 is arranged between each panel. That is, the lock inner panel 32 is fixed to the floor panel 20,
Further, the rocker inner panel 32 and the rocker reinforcement 34 are fixed to form a closed section B on the inside of the vehicle, and the rocker reinforcement 34 and the rocker outer panel 30 are fixed to form a closed section B on the outside of the vehicle. A cross-sectional portion C is formed.

As shown in FIG. 5, a lock member 38 serving as a holding member is disposed at a position corresponding to the rear end of the door reinforcement 26 at the lower end of the center pillar 36. The lock member 38 is made of rubber and has a shape corresponding to the cross-sectional shape of the door reinforcement 26.
When the door reinforcement 26 is closed, the rear end portion of the door reinforcement 26 is fitted to hold the door reinforcement 26, that is, the door body 10. In this case, the rubber material used is one that increases the spring constant of the lock member 38 in the vertical direction of the vehicle body.

Therefore, when the door body 10 is in the closed state, the closed section A of the door body 10 faces the closed section B and the closed section C of the rocker section 28, and forms a closed section with a large area as a whole. This improves the rigidity of the vehicle body.

Next, the operation of the embodiment will be explained.

In the automobile door structure configured as described above, the closed cross-section portion A is formed by the door inner panel 24 and the door reinforcement 26. This closed section A
is fixed from the front end of the door inner panel 24 facing the lower part of the front pillar 16 to the lower end of the door inner panel 24 facing the passenger compartment and facing the upper surface of the rocker part 28. Further, when the door body 10 is closed, the rear end portion of the door reinforcement 26 is fitted into the lock member 38 to hold the entire door body 10.

Therefore, when the door body 10 is closed, the closed cross section A of the door body 10 is the closed cross section B of the rocker portion 28.
And facing the closed cross section C, a closed cross section having a large area as a whole is formed.

Therefore, even if the cross-sectional height of the rocker portion 28 (closed cross-section portion B and closed cross-section portion C) is reduced, a large area of the closed cross-section portion can be secured as a whole without reducing the rigidity of the vehicle body. , it is possible to increase the opening area of the entrance and exit, thereby improving the ease of boarding and exiting.

Furthermore, in this case, the lock member 38 is made of a rubber material with a high spring constant in the vertical direction of the vehicle body, so that the tolerance range for assembly accuracy of the door body 10 is widened without reducing the rigidity when the door is closed. be able to.

In this embodiment, a two-door type car has been described, but the present invention is not limited to this and can be applied to a four-door type or other types of cars.

[Effects of the Invention] As explained above, the automobile door structure according to the present invention has the effect of increasing the opening area of the entrance and exit and improving the ease of getting in and out without reducing the rigidity of the vehicle body.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a door structure according to an embodiment of the present invention, FIG. 2 is a schematic side view of an automobile to which this door structure is applied, and FIG. 3 is a second diagram showing the structure of the door.
4 is a sectional view taken along the line in FIG. 2, FIG. 4 is a sectional view taken along the line in FIG. 2, showing the structure of the door, and FIG.
FIG. 6 is a sectional view of the conventional door structure corresponding to FIG. 3, and FIG. 7 is a sectional view of the conventional door structure corresponding to FIG. 4. 10...door body, 20...floor panel, 2
2...Door outer panel, 24...Door inner panel, 26...Door reinforcement, 28...
...Rotsuka part, 30...Rotsuka outer panel, 32
... Lock inner panel, 38 ... Lock member, A ... Closed cross section, B ... Closed cross section, C ... Closed cross section.

Claims (1)

[Scope of Claim for Utility Model Registration] An automobile door structure in which a locking portion is provided on the side of a floor panel of a vehicle body, comprising a door outer panel and a door inner panel, and a vehicle front end of the door inner panel. between the part facing the lower part of the pillar of the door inner panel and the part facing the upper surface of the locking part of the lower end of the door inner panel, and on the passenger compartment side of the door inner panel, a closed cross section is formed by the door inner panel. a reinforcing member forming the reinforcing member, and a lower end of the pillar corresponding to the rear end of the reinforcing member engages with and holds the reinforcing member at the rear end of the vehicle when the door is closed. An automobile door structure characterized in that a holding member is arranged to hold the door.