JP3818856B2 - Belt line reinforcement structure for vehicle doors - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a beltline reinforcing structure for a vehicle door that increases the rigidity of a door body against an impact force at the time of a vehicle collision.
[0002]
[Prior art]
In general, in a vehicle, for example, from the viewpoint of preventing door deformation due to impact force at the time of an offset collision, a beltline rein hose is provided in the door body to reinforce the beltline portion so as to increase the rigidity of the door. I have to.
[0003]
As a reinforcement structure of such a belt line part, conventionally, for example, a door inner panel and a belt-like belt line rein hose form one closed cross section extending in the vehicle front-rear direction, and the belt line rein hose has a closed cross section. As it is extended to the door hinge mounting part (see Japanese Utility Model Laid-Open No. 63-123313, Japanese Patent Laid-Open No. 9-175179), or the vertical dimension of the front side of the beltline reinhose is made larger than the rear side (Japanese Patent Laid-Open No. 2000) -71769) and the like have been proposed.
[0004]
[Problems to be solved by the invention]
However, in each of the above conventional publications, a structure in which one closed cross section is formed by a door inner panel and a belt-line belt line rein hose is adopted, and the cross section may be collapsed depending on the input at the time of collision. There is. As a result, the impact force may not be efficiently transmitted to the beltline reinhose, and there is a concern about the influence on the passenger compartment.
[0005]
The present invention has been made in view of the above-described conventional situation, and can prevent the collapse of the cross section at the belt line portion due to the input at the time of collision, can efficiently transmit the impact force to the belt line rein hose, and consequently to the passenger compartment. An object of the present invention is to provide a beltline reinforcing structure for a vehicle door that can prevent the influence.
[0006]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a belt line reinforcing structure for a vehicle door, wherein a belt line rein hose is disposed along a belt line in a door body that opens and closes a door opening formed on a side of a vehicle body. We shall have a closed cross section line reinforcements alone, thereby forming at least two or more closed cross section extending in the longitudinal direction of the vehicle between the beltline reinforcements and the door body, the door body and the belt line reinforcements The door mirror mounting seat is formed to extend upward at the front corner of the door inner panel of the door body, and the upper half and lower half of the door mirror mounting seat are above the belt line. , Positioned below, and an extension provided on the door mirror mounting seat so as to extend upward at the front end of the beltline reinhose. Combined, the upper half of the door mirror mounting seat, the upper part of Mirabesu the door mirror in the lower half, is characterized by fixing the bottom.
[0007]
The invention of claim 2 is characterized in that, in claim 1, the belt line rein hose is formed so that the closed cross-sectional shape is substantially continuous in the vehicle front-rear direction.
[0008]
The invention of claim 3 is the belt line rein hose according to claim 1 or 2, wherein the belt line rein hose joins the outer rein hose and the inner rein hose in the middle, and the front side of the vehicle is expanded in the vertical direction from the rear side. has a closed section, it is characterized in that the enlarged closed section is opposed to the rear of the apron member.
[0011]
[Effects of the invention]
According to the beltline reinforcing structure according to the first aspect of the present invention, the beltline rein hose has a closed cross-sectional structure alone, and the beltline reinhose and the door body form at least two closed cross sections. In addition, since the beltline rein hose is arranged over the entire length of the door body, the rigidity of the door body in the longitudinal direction of the vehicle can be increased, and the input at the time of collision compared to the case where the conventional closed cross-sectional shape is one. It is possible to prevent cross-sectional collapse due to, and to efficiently transmit the impact force to the beltline reinhose, thereby preventing the influence on the passenger compartment.
[0012]
In addition, since an extension is formed on one of the outer and inner rein hoses, and the extension is coupled to the door mirror attachment or door hinge attachment, the strength of the door mirror or door hinge attachment without increasing the number of parts. The rigidity of the entire front end portion of the door body can be increased.
[0013]
Furthermore, since the extension part and the door mirror hose formed the door mirror attachment part, it is possible to increase the rigidity of the door mirror attachment part without increasing the number of parts from this point , thereby preventing the door mirror from wobbling or mirror surface chatter. it can.
[0014]
In the invention of claim 2, since the closed cross-sectional shape of the beltline rein hose is made continuous in the vehicle front-rear direction, the break can be eliminated over the entire length of the beltline reinhose, and the cross-sectional shape is changed in the middle. In this case, it is possible to prevent the collapse of the cross section and further increase the rigidity of the door.
[0015]
In the invention of claim 3, the belt line rein hose is formed by joining the outer rein hose and the inner rein hose in the middle, and the closed cross-sectional shape of the front side of the vehicle is enlarged from the rear side. Since the closed cross section faces the apron member, the input at the time of collision can be reliably transmitted from the apron member to the belt line rein hose.
[0016]
Furthermore, since the above-mentioned enlarged closed cross section is two or more for the beltline rein hose and the door main body, compared with the case where only the front dimension of the single plate beltline reinhose of the conventional publication is increased, the input inlet portion is larger. Rigidity can be increased and cross-sectional collapse due to opening of the mouth can be prevented.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0019]
1 to 8 are views for explaining a beltline reinforcing structure for a vehicle door according to an embodiment of the present invention. FIGS. 1 and 2 are a side view and an exploded perspective view of a door body viewed from the outside. 3 is a cross-sectional plan view of the hinge mounting portion of the door body (cross-sectional view taken along line III-III in FIG. 1). FIG. 4 is a cross-sectional rear view of the door mirror mounting portion of the door main body (cross-sectional view taken along line IV-IV in FIG. ), FIG. 5 is a sectional rear view of the door body (cross-sectional view taken along the line VV in FIG. 1), FIG. 6 is a sectional plan view of the door body (cross-sectional view taken along the line VI-VI in FIG. 1), and FIG. FIG. 8 is a side view of the vehicle body of the automobile provided with the door body.
[0020]
In the figure, reference numeral 1 denotes the side of a vehicle body, which joins a roof panel 3 between the upper ends of left and right side panels 2 and 2 and a floor panel (not shown) between the lower ends. A front door opening 2a and a rear door opening 2b are formed in a portion of each side panel 2 facing the passenger compartment, and the front door 4 and the rear door 5 can be opened and closed at the door openings 2a and 2b. It is the general structure which is arranged in.
[0021]
A fender apron 6 extending in front of the vehicle is integrally formed at the front ends of the left and right side panels 3, and the fender apron 6 is coupled to an apron member 7 extending in the vehicle front-rear direction.
[0022]
The front door 4 has a structure in which a middle door body 4a and a window frame 4b are integrally formed by joining a door outer panel 10 and a door inner panel 11 together. A window opening 4c is formed by the door body 4a and the window frame 4b, and the window opening 4c can be opened and closed by a door glass 12 arranged to be movable up and down.
[0023]
The outer peripheral edges of the door outer panel 10 and the door inner panel 11 are joined by hemming. A door glass opening 4d having a size that allows the door glass 12 to be inserted is formed at the upper edge of the door body 4a, and a weather strip (not shown) is provided between the door glass opening 4d and the door glass 12. It is sealed.
[0024]
A front wall portion 11a is bent at the front end of the door inner panel 11 in the vehicle width direction, and a pair of upper and lower hinge mounting seats 11b and 11b are formed on the front wall portion 11a. The upper hinge mounting seat 11b is located at a portion facing the rear of the apron member 7.
[0025]
A door-side hinge member 16 is bolted and fixed to each hinge mounting seat 11b, and the door-side hinge member 16 is bolted and fixed to a front pillar 17 that forms the front edge of the front door opening 2a. The vehicle body side hinge member 18 is rotatably connected via a pin 19.
[0026]
A door outer rein hose 15 is disposed along the belt line L on the inner surface of the door outer panel 10, and the door outer rein hose 15 is coupled to the door outer panel 10 by a mastic adhesive or the like. Thereby, the rigidity of the belt line L portion and the door glass opening 4d portion of the door outer panel 10 is enhanced.
[0027]
An impact beam 14 extending in the front-rear direction is disposed in the door body 4a. The front end of the impact beam 14 is coupled to the middle part of the upper and lower hinge mounting seats 11b on the door body 4a. The end is coupled to the portion facing the rear of the lower hinge mounting seat 11b.
[0028]
A belt line rein hose 20 is disposed along the belt line L in the door body 4a, and the belt line reinforcing structure is as follows.
[0029]
The belt line rein hose 20 is formed by joining the upper edge portions 21b and 22b and the lower edge portions 21c and 22c so that the outer rein hose 21 and the inner rein hose 22 having a hat-shaped longitudinal section are in the middle. Thus, a closed cross section extending in the vehicle front-rear direction is formed.
[0030]
Three upper edges 21b and 22b of the beltline reinhose 20 are spot-welded on the door glass opening edge 11c of the door inner panel 11, and the lower edges 21c and 22c are attached to the inner wall of the door inner panel 11. Three sheets are spot welded. In this way, the belt line L portion of the door body 4a has a single first closed cross section A by the belt line reinhose 20 and a second closed cross section B by the door inner panel 11 and the inner rein hose 22. It is formed to be continuous over the entire length in the front-rear direction.
[0031]
The beltline reinhose 20 has a lower side gently inclined forward and downward so that the front side of the vehicle is larger in the vertical dimension than the rear side when viewed from the outside, and the front end surface of the beltline 20 has the apron. It faces the rear of the member 7.
[0032]
The inner rein hose 22 is formed to have substantially the same cross-sectional shape over the entire length in the vehicle front-rear direction. A flange portion 22a is bent outward in the vehicle width direction at the front end portion of the inner rein hose 22, and the flange portion 22a is joined to the rear surface of the upper hinge mounting seat 11b together with the door side hinge member 16. . Further, a joint portion 21a is formed at the front end portion of the outer rein hose 21 so as to be bent outward, and the joint portion 21a is joined in the vicinity of the inside of the hinge mounting seat 11b of the flange portion 22a.
[0033]
At the rear end of the inner hose 22, as shown in FIG. 6, a rear lateral wall portion 22d bent at the vehicle exterior side, and a rear flange portion that bends and extends rearward after the rear lateral wall portion 22d. 22e is formed. After that, the three flange portions 22e are overlapped and joined in a state of being sandwiched between the door inner panel 11 and the door outer in-hose 15.
[0034]
A rear joint 21d is formed at the rear end of the outer hose 21 so as to be bent outwardly of the vehicle, and the joint 21d is joined to the center of the rear vertical wall 22d in the vehicle width direction. Reference numeral 25 denotes a door lock rein hose disposed between the door inner panel 11 and the inner rein hose 22, and 26 denotes a rear edge portion of the front door opening 2a and a front edge portion of the rear door opening 2b. It is a center pillar.
[0035]
A division 30 having a H-shaped cross section for supporting the front edge of the door glass 12 so as to be movable up and down is disposed at the front of the window frame 4b. A fixed window 31 is formed by the division 30 and the front corner portion of the window frame 4b and the door body 4a, and a window glass 32 is attached to the fixed window 31.
[0036]
A door mirror 35 is disposed in the belt line L portion of the fixed window 31. The vehicle body mounting structure of the door mirror 35 has the following structure.
[0037]
A door mirror mounting seat 36 is integrally formed at a front corner portion of the door inner panel 11 between the door body 4a and the window frame 4b. The upper half portion 36a of the door mirror mounting seat 36 projects so as to be positioned on the fixed window 31 side above the belt line L, and is exposed upward from the upper edge of the door outer panel 10 when viewed from the outside. The lower half portion 36b of the door mirror mounting seat 36 is located in the door body 4a below the belt line L and is covered with the door outer panel 10.
[0038]
A pair of front and rear door mirror mounting holes 37, 37 are formed in the upper half portion 36a of the door mirror mounting seat 36, and a harness insertion hole 38 is formed in the middle portion of the both mounting holes 37, and the lower half portion 36b. One door mirror mounting hole 39 is formed.
[0039]
The door mirror mounting seat 36 is provided with a door mirror in hose 40. The door mirror hose 40 includes a mirror mounting portion 40a that abuts on the door mirror mounting seat 36, and a sash portion 40b that extends upward from the front edge of the mirror mounting portion 40a along the wind frame 4b. It is joined to the wind frame 4b so as to form a closed cross section.
[0040]
A support portion 40c is bent outward at the upper edge of the mirror mounting portion 40a, and the lower edge portion of the fixed window 31 is formed by the support portion 40c and the upper edge 36c of the door mirror mounting seat 36. ing. The lower edge portion of the window glass 32 is held by the seal member 41 fitted to the lower edge portion.
[0041]
An extension portion 21 f extending to the door mirror mounting seat 36 is integrally formed at the front end portion of the outer rein hose 21. The extension portion 21f is joined to the door mirror mounting seat 36 together with the mirror mounting portion 40a so as to overlap with each other, and the door mirror 35 is attached to the joint portion.
[0042]
The door mirror 35 has a schematic structure in which a mirror body 45 is connected to a mirror base 44 so as to be rotatable between a use position and a storage position. A reflecting mirror 46 is attached to the mirror body 45 by an electric motor (not shown). It is mounted so that the position can be adjusted.
[0043]
The mirror base 44 includes a base body 44a that covers the upper half 36a of the door mirror mounting seat 36, and a lower part 44b that extends downward following the base body 44a and faces the lower half 36b. The upper boss portions 44c and 44c corresponding to the upper mounting holes 37 are formed, and the lower boss portion 44d corresponding to the lower mounting hole 39 is formed in the lower portion 44b.
[0044]
The mirror base 44 is formed with an engagement piece 44e that engages with the seal member 41, thereby preventing rainwater or the like from entering the door body 4a. Further, the lower edge portion 44f outside the mirror base 44 is supported by the upper edge portion 10a of the door outer panel 10 with a cushioning material 50 interposed therebetween.
[0045]
Then the door mirror 35, so as to face the mounting seat 36 with write No Insert the Mirabesu 44 from the outer side into the door glass opening 4d, insert the bolts 48, 49 from the cabin side to the mounting holes 37 and 39 in this state The bolts 48 and 49 are fixed to the door inner panel 11 together with the outer inner hose 21 and the door mirror in hose 40 by screwing the bolts 48 and 49 into the boss portions 44c and 44d, respectively.
[0046]
Next, the effect of this embodiment is demonstrated.
[0047]
According to the belt line reinforcement structure of the present embodiment, the belt line rein hose 20 has a single closed cross section by joining the outer rein hose 21 and the inner rein hose 22 in the middle. Since the first and second closed cross sections A and B extending over the entire length in the front-rear direction of the door body 4a are formed by the rein hose 20 and the door inner panel 11, the belt line is compared with the case of passing through one conventional closed cross section. The rigidity in the L part can be increased, and the cross-sectional collapse at the time of offset collision can be prevented.
[0048]
Thereby, the input from the apron member 7 can be efficiently transmitted to the beltline reinhose 20 via the upper hinge member 16, the door deformation at the time of a collision can be prevented, and the influence on the room can be prevented.
[0049]
Moreover, since the cross-sectional shape of the beltline reinhose 20 is made continuous in the front-rear direction, the break can be eliminated over the entire length of the beltline reinhose 20, and the cross-sectional shape can be prevented from changing when the cross-sectional shape is changed halfway. It is possible to further increase the rigidity at the belt line L portion.
[0050]
In the present embodiment, the beltline reinhose 20 has a single closed cross-sectional shape, a closed cross-sectional structure in which the front side is enlarged in the vertical direction from the rear side, and is gently inclined in the front-rear direction, and the front end surface is aproned. Since it is made to oppose the back of the member 7, the impact force from the apron member 7 can be reliably transmitted to the beltline reinhose 20, and the influence on a vehicle compartment can be prevented reliably.
[0051]
Moreover, since the longitudinal cross-sectional shape of the inner rein hose 22 is substantially the same cross-sectional shape over the entire length, it is possible to eliminate a break due to a cross- sectional change when the front closed cross-section of the belt line rein hose 20 is enlarged, Cross-section collapse can be reliably prevented.
[0052]
In the present embodiment, the flange portion 22a is formed at the front end portion of the inner hose 22, and the flange portion 22a is coupled to the hinge mounting portion 11b, so that the mounting strength and rigidity can be increased without increasing the number of parts. it can.
[0053]
In the above embodiment, a case where two closed cross sections, that is, a first closed cross section A formed by the beltline rein hose 20 alone and a second closed cross section B formed by the door inner panel 11 and the inner rein hose 22 is described. However, the present invention may form three or more closed cross sections. For example, a reinforcing portion that extends downward is integrally formed on the door mirror rein hose 40, and an extended lower end portion of the reinforcing portion is joined to the lower edge portions 21c and 22c of the beltline rein hose 20 so that the reinforcing portion and the inner rein hose are joined. 22 may form a third closed cross section. In this case, three closed sections can be formed at the front part of the door, and the rigidity can be further increased.
[0054]
According to the door mirror mounting structure of the present embodiment, the mounting seat 36 is formed at the front corner portion of the door inner panel 11, and the upper half portion 36 a of the mounting seat 36 is exposed in the fixed window 31 above the belt line L. The lower half part 36b is positioned on the door body 4a below the belt line L, the base body 44a of the mirror base 44 is bolted and fixed to the upper half part 36a, and the lower part 44b is fixed to the lower half part 36b. Since the lower part 44b of the mirror base 44 is hidden inside the door body 4a and cannot be seen from the outside because it is bolted and fixed, a sufficient span can be taken without impairing the external design, and the mounting rigidity of the door mirror 35 can be improved. . As a result, it is possible to prevent wobbling due to external force and mirror vibration during traveling.
[0055]
Further, since the door mirror in hose 40 is disposed on the mounting seat 36 and the extension portion 21f of the outer rear hose 21 is disposed, the rigidity of the door mirror mounting portion can be improved and the mounting rigidity of the mirror base 44 can be further increased. .
[0056]
Here, a fastening bracket (not shown) of the division 30 may be extended to the attachment position of the mirror base 44, and the mirror base 44 may be fastened and fixed to the door inner panel 11 together with the fastening bracket. In this case, the mounting strength of the mirror base 44 can be further improved.
[Brief description of the drawings]
FIG. 1 is a side view of a door body for explaining a belt line reinforcing structure for a vehicle door according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of a belt line rein hose of the door body.
FIG. 3 is a cross-sectional plan view (cross-sectional view taken along line III-III in FIG. 1) of the hinge mounting portion of the door body.
FIG. 4 is a cross-sectional rear view (a cross-sectional view taken along line IV-IV in FIG. 1) of a door mirror mounting portion of the door body.
5 is a cross-sectional rear view (cross-sectional view taken along the line VV in FIG. 1) of the door body.
6 is a sectional plan view of the door body (a sectional view taken along line VI-VI in FIG. 1).
FIG. 7 is a side view of a door mirror mounting portion of the door body.
FIG. 8 is a side view of a vehicle body on which the door body is disposed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Car body side part 2a Front door opening 4 Front door 4a Door main body 7 Apron member 11b Hinge attachment part 20 Beltline rein hose 21 Outer inn hose 21f Extension part 22 Inner inn hose 22a Flange part (extension part)
36 Domira mounting seat 40 Domiralli hose A 1st closed section B 2nd closed section L Belt line

Claims (3)

In a beltline reinforcement structure for a vehicle door in which a beltline rein hose is arranged along the beltline in a door body that opens and closes a door opening formed on the side of the vehicle body, the beltline reinhose is closed alone. The belt line rein hose and the door body form at least two closed cross sections extending in the vehicle front-rear direction, and the belt line rein hose is disposed over substantially the entire length of the door body. And forming a door mirror mounting seat at the front corner of the door inner panel of the door body so as to extend upward, and positioning the upper half and lower half of the door mirror mounting seat above and below the belt line, An extension portion provided so as to extend upward to the front end portion of the beltline rein hose is coupled to the door seat. The upper half of the mounting seat, the upper part of Mirabesu the door mirror in the lower half, the belt line reinforcement structure of the vehicle door, characterized in that to fix the bottom.   2. The belt line reinforcing structure for a vehicle door according to claim 1, wherein the belt line rein hose is formed so that a closed cross-sectional shape is substantially continuous in a vehicle front-rear direction. 3. The beltline rein hose according to claim 1, wherein the beltline rein hose joins the outer rein hose and the inner rein hose in a middle state, and has a closed cross-sectional shape in which the front side of the vehicle is enlarged in the vertical direction from the rear side. cage, a belt line reinforcement structure of a vehicle door, characterized in that the enlarged closed section is opposed to the rear of the apron member.

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