JP3997187B2 - Automobile beltline structure - Google Patents

Description

The present invention relates to a belt line portion structure of an automobile in which a belt line rein hose is disposed in a door body along a belt line.

Generally, in an automobile, an input at the time of a vehicle collision is transmitted from a front pillar to a belt line rein hose disposed in a front door, and then transmitted rearward from the belt line rein hose through a center pillar. The structure that avoids the influence on

As such a beltline part structure, conventionally, the beltline rein hose has a vertically long closed cross section, and the front end of the beltline reinhose is expanded in the vertical direction from the rear part, and further the beltline reinhose A structure has been proposed in which an outer and inner hose are brought into contact with each other at the middle part in the front-rear direction of the hose to form a direct alignment part, and functional parts such as an inner handle are disposed on the direct alignment part ( For example, see Patent Document 1).
JP 2002-347440 A

By the way, in the belt line part structure of the above-mentioned conventional publication, a structure in which a direct alignment part is formed in the intermediate part of the belt line reinhose is adopted, and there is a possibility that the direct alignment part may be bent at a break point, and a collision occurs. There is a concern that the input of time may not be reliably transmitted to the center pillar. In order to prevent such bending of the direct alignment portion, reinforcement is performed by a pipe member or the like. However, in this case, there is a problem that the number of parts and weight increase.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to prevent the belt line rein hose from bending without increasing the number of parts and weight, and to reliably transmit the input at the time of collision to the center pillar. Its purpose is to provide a structure.

The present invention provides a belt line rein hose extending in the vehicle front-rear direction along the belt line in a door body that opens and closes a door opening formed on the side of the vehicle body, and the front and rear end surfaces of the belt line rein hose are respectively described above. In a belt line part structure of an automobile, which is disposed so as to face the pillar members forming the front and rear edge parts of the door opening, the belt line rein hose has a closed cross section over substantially the entire length in the front-rear direction. and then, prior to the beltline reinforcements, formed as cross-sectional width in the vehicle width direction of the intermediate portion is increased relative to the vehicle width direction of the cross-sectional width of the rear end portion, as viewed from the side of the vehicle, it said front, as lower side of the rear end portion is positioned below the lower side of the intermediate portion, and formed so as to form a gentle arc shape lower edges are continuous, the beltline reinforcements is the peak at the time of collision of the vehicle It is characterized by biting into the over member.

According to the belt line portion structure of the present invention, the belt line rein hose has a closed cross section over substantially the entire length in the front-rear direction, and the cross-sectional width at the intermediate portion with respect to the cross-sectional width of the front and rear end portions. Since it has been enlarged, it is possible to eliminate the break point over the entire length of the beltline reinhose without increasing the number of parts and weight, and the yield strength at the intermediate part can be increased, and bending at the time of a vehicle collision is prevented. Thus, the input can be reliably transmitted to the rear of the vehicle body.

In the present invention, since the lower side of the front and rear end portions of the beltline reinhose is formed below the lower side of the intermediate portion, the beltline reinhose can bite into the pillar member reliably. In addition, the lower portion of the intermediate portion can be used as an installation space for an inner handle, a door regulator, and the like.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 7 are views for explaining a belt line portion structure of an automobile according to an embodiment of the present invention. FIG. 1 is a side view of a belt line portion of a front door disposed in the automobile. Is a side view of the beltline rein hose disposed on the front door, and FIGS. 3, 4, 5, 6, and 7 are cross-sectional views of the beltline reinhose (III-III cross-sectional view of FIG. 2, IV-IV sectional view, VV sectional view, VI-VI sectional view, and VII-VII sectional view).

In the figure, reference numeral 1 denotes a vehicle body side portion, which includes a roof panel 3 disposed at the upper ends of the left and right side panels 2 and a floor panel (not shown) disposed at the lower ends. It is formed and has a schematic structure in which a front door 4 for opening and closing the vehicle compartment is disposed on each of the left and right side panels 2.

The side panel 2 connects a roof rail 6 and a rocker panel 7 extending rearward of the vehicle to the upper and lower ends of a front pillar 5 extending in the vehicle vertical direction, and a center extending between the roof rail 6 and the rocker panel 7 in the vehicle vertical direction. The front door opening 2a is formed in the side panel 2 by connecting with the pillar 8, and the front door 4 is disposed in the front door opening 2a.

Each of the front pillar 5 and the center pillar 8 has a structure in which the outer pillars 5a and 8a each having a generally hat-shaped cross section and an inner pillar (not shown) are joined to form a square cylindrical closed cross section. The front pillar 5 is coupled with a rear end portion of an apron member 9 extending in the vehicle longitudinal direction.

The front door 4 is supported by the front pillar 5 through a pair of upper and lower door hinges 14 so as to be openable and closable. The front door 4 has a window on a door body 10 formed by joining outer edges of the door outer panel 10a and the door inner panel 10b. The frame 11 is connected, and the window glass 12 is arranged on the window frame 11 so as to be movable up and down. The front end portion of the door body 10 and the front end portion of the window frame 11 are coupled by a generally triangular stay member 18.

A door outer rein hose 13 is disposed inside the door outer panel 10a in the door body 10, and the upper edge of the door outer rein hose 13 is coupled to the door outer panel 10a by hemming.

A belt line rein hose 15 extending in the vehicle front-rear direction is disposed along the belt line L in the door body 10, and the belt line rein hose 15 is fixed to the door inner panel 10b. A work opening 10c is formed below the beltline reinhose 15 of the door inner panel 10b, and the work opening 10c is detachably bolted to the beltline reinhose 15 and the door inner panel 10b. Covered by a cover member 19.

The belt line rein hose 15 joins the upper flange portions 16a, 17a and the lower flange portions 16b, 17b of the inner rein hose 17 having a generally cross-sectional hat shape by welding in the same manner as the outer rein hose 16 having a generally cross-sectional hat shape. In addition, the front flange portions 16c and 17c and the rear flange portions 16d and 17d are brought into contact with each other and joined by welding to form a closed cross section over substantially the entire length in the front-rear direction. A reinforcing plate 20 is disposed at the front end of each of the rein hoses 16 and 17, and is overlapped and joined between the lower flange portions 16b and 17b.

Projection portions 15 a and 15 b are formed on the front end surface and the rear end surface of the belt line rein hose 15 so as to be close to the front pillar 5 and the center pillar 8, respectively. By causing the projections 15a and 15b to bite into the front pillar 5 and the center pillar 8 at the time of a vehicle frontal collision, the door body 10 is prevented from being pushed out of the vehicle.

Further, the apron member 9 is continuously arranged in front of the beltline reinhose 15 so as to be substantially at the same height and to form a substantially straight line in the front-rear direction. As a result, the input at the time of a frontal collision is transmitted from the apron member 9 to the beltline reinhose 15 via the front pillar 5 and from the beltline reinhose 15 to the rear of the vehicle body via the center pillar 8.

The thickness of the inner hose 17 is greater than the thickness of the outer hose 16. In this way, the inner rein hose 17 has a cross-sectional hat shape that opens outward, and the plate thickness is larger than that of the outer rein hose 16. Opening can be suppressed and bending to the indoor side can be prevented.

The cross-sectional width w1 in the vehicle width direction of the belt line rein hose front-rear direction intermediate portion 15c is formed to be larger than the cross-sectional widths w2, w3 in the vehicle width direction of the front and rear end portions 15d, 15e. The cross-sectional shape is a substantially square.

When viewed from the side of the vehicle, the upper side 15f in the closed cross section of the beltline reinhose 15 is formed in a substantially straight line, and the lower side 15g is located at the front and rear end portions 15d and 15e below the intermediate portion 15c. Thus, it is formed so as to form a continuous gentle arc shape.

According to the belt line portion structure of the present embodiment, the belt line rein hose 15 has a closed cross section over substantially the entire length in the front-rear direction by joining the outer rein hose 16 and the inner rein hose 17 having a hat-shaped cross section. In addition, since the cross-sectional width w1 of the intermediate portion 15c is made larger than the cross-sectional widths w2 and w3 of the front and rear end portions 15d and 15e, the entire length of the beltline reinhose 15 is increased without increasing the number of parts and weight. Thus, the breakage point can be eliminated, the proof stress at the intermediate portion 15c can be increased, the bending at the time of the vehicle collision can be prevented, and the input can be reliably transmitted to the center pillar 8.

In the present embodiment, the lower side 15g in the closed cross section of the beltline reinhose 15 is formed so that the front and rear end portions 15d and 15e are positioned below the intermediate portion 15c and has a continuous gentle arc shape. Since it is formed, the belt line rein hose 15 can be securely bited into the front pillar 5 and the center pillar 8, and the lower portion of the intermediate portion 15c is provided as an installation space for an inner handle, a door regulator, etc. (not shown). Can be used.

In the above embodiment, the closed cross-sectional shape of the intermediate portion 15c of the beltline reinhose 15 is a substantially square shape. However, in the present invention, the lower side 15g of the beltline reinhose 15 is inclined downward to close the pentagonal shape. It may have a cross-sectional shape and is not particularly limited.

1 is a side view of a vehicle body provided with a front door for explaining a belt line portion structure of an automobile according to an embodiment of the present invention. It is a side view of the belt line rein hose arrange | positioned at the said front door. It is sectional drawing (III-III sectional view taken on the line of FIG. 2) of the said beltline reinhose. It is sectional drawing (IV-IV sectional view taken on the line of FIG. 2) of the said beltline reinhose. It is sectional drawing (VV sectional view taken on the line of FIG. 2) of the said beltline reinhose. It is sectional drawing (VI-VI sectional view taken on the line of FIG. 2) of the said beltline reinhose. It is sectional drawing (VII-VII sectional view taken on the line of FIG. 2) of the said beltline reinhose.

Explanation of symbols

2a Front door opening 4 Front door 5 Front pillar 8 Center pillar 10 Door body 15 Belt line rein hose 15c Intermediate part 15d Front end part 15e Rear end part 15g Lower side L Belt lines w1 to w3 Cross section width

Claims (1)

A belt line rein hose extending in the longitudinal direction of the vehicle along the belt line in the door body that opens and closes the door opening formed on the side of the vehicle body, the front and rear end surfaces of the belt line rein hose are in front of the door opening, respectively. In the belt line structure of an automobile arranged to face the pillar member that forms the rear edge, the belt line rein hose has a closed cross section over substantially the entire length in the front-rear direction. previous line reinforcements, formed as cross-sectional width in the vehicle width direction of the intermediate portion is increased relative to the vehicle width direction of the cross-sectional width of the rear end portion, as viewed from the side of the vehicle, the front, the rear end portion lower side so as to be positioned below the lower side of the intermediate portion, and formed so as to form a gentle arc shape lower edges are continuous, in the beltline reinforcements are the pillar members at the time of collision of the vehicle Automotive belt line portion structure characterized in that Komu have.

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