JP2012201299A - Roll bar apparatus for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll bar apparatus for a vehicle capable of efficiently distributing and transferring a roll load, a side impact load and a tensile load without enlarging the entire apparatus or increasing the weight or costs.SOLUTION: A first crossbar member 23 is coupled to an upper side portion of an oblique side part 25a of a bracket 25, and a second crossbar member 24 is coupled to a lower side part 25b of the bracket 25. A front end part 25f and a rear end part 25b of the bracket 25 are coupled to a pillar member 11 by a fastening member 31, respectively, via collar members 29 and 30 which are disposed inside a closed cross section a of the pillar member 11 across a vehicle width direction.

Description

  The present invention relates to a roll bar device mounted on an open car.

  This type of open car is equipped with a roll bar device that avoids the influence on the passenger compartment during a fall or a side collision. As such a roll bar device, for example, in Patent Document 1, link brackets that are coupled to both ends of a crossbar member so as to extend forward are coupled to left and right pillar members, and both ends of the crossbar member are coupled to each other. The extending portion extending downward is coupled, the lower end portion of the extending portion is coupled to a square tubular cross member formed in the floor panel kick-up, and the lower end portion of the extending portion is further connected via a connecting member. The thing of the structure couple | bonded with the inner panel of the said pillar member is disclosed.

JP 2006-96278 A

  By the way, in the conventional apparatus, since the roll load from the roll bar at the time of falling is mainly received by the extension part and transmitted to the floor, it is necessary to make the extension part strong with a large plate thickness. In addition, in the case of a vehicle having a low floor position, it is necessary to extend the extending portion downward to the floor, and there is a concern that the entire apparatus becomes large and the weight and cost increase.

  Further, the conventional device has a structure in which a side impact load at the time of a side collision is received by a link bracket that is offset forward from the crossbar member, and there is a concern that the link bracket may be deformed and the load cannot be efficiently transmitted to the crossbar member. There is. In order to suppress such deformation of the link bracket, it is necessary to increase the plate thickness or to add a reinforcing member between the link brackets, resulting in a problem that the weight and cost increase as described above.

  Further, when a seat belt anchor is attached to the cross bar member, for example, there is a concern that the cross bar member and the extending portion are easily deformed so as to fall forward due to a forward tensile load applied to the belt anchor. In order to suppress such deformation, it is necessary to increase the plate thickness or add a reinforcing member in the same manner as described above, and there is a problem that the weight and cost increase from this point.

  The present invention has been made in view of the above-described conventional situation, and efficiently disperses and transmits roll load, side impact load, and tensile load without increasing the size of the entire device and increasing the weight and cost. An object of the present invention is to provide a roll bar device for an automobile that can perform the above.

  The present invention relates to a roll bar device for an automobile which is disposed on the vehicle rear side of the seat so as to extend in the vehicle width direction and is attached to the left and right pillar members, and is disposed in the vicinity of the rear of the seat back of the seat. Arranged on the left and right pillar members, the first crossbar member to which the roll bar is coupled, the second crossbar member offset to the front lower side of the first crossbar member, and the left and right pillar members. The first crossbar member is coupled to an upper portion of the bracket, and the second crossbar member is coupled to a lower portion of the bracket, and at least a front end portion of the bracket and Each of the rear end portions is coupled to the pillar member by a fastening member via a collar member arranged so as to extend in the vehicle width direction within the closed cross section of the pillar member. There.

  According to the roll bar device of the present invention, the first crossbar member is coupled to the upper portion of the bracket, the second crossbar member is coupled to the lower portion of the bracket, and the front end portion and the rear end portion of the bracket are connected to each other. Each of the pillar members is coupled to the pillar member by a fastening member via a collar member arranged in the vehicle width direction in the closed cross section of the pillar member.

  Since it comprised in this way, the roll load at the time of a fall should be efficiently disperse | distributed and transmitted to this pillar member from the 1st, 2nd crossbar member through the bracket, effectively using the closed cross-section rigidity of the pillar member. Can do. Thereby, it can respond to a roll load, without enlarging board thickness or adding a reinforcement member.

  In addition, since the first and second crossbar members are coupled to the left and right pillar members via the brackets, the first and second crossbar members can be used for a vehicle having a low floor position, and an extension portion for coupling to a conventional floor is provided. It can be eliminated, the entire apparatus can be downsized, and the weight and cost can be reduced.

  In the present invention, the side impact load at the time of a side collision can be efficiently distributed and transmitted from the bracket to the first and second crossbar members via the collar members before and after the pillar member. Accordingly, it is possible to cope with a side collision load without increasing the plate thickness or adding a reinforcing member.

  For example, when a belt anchor is attached to the first crossbar member, a forward tensile load acting on the belt anchor is received by the first and second crossbar members and the bracket, and the pillar member is interposed via the collar member. Can be efficiently dispersed and transmitted to the closed cross section. As a result, it is possible to cope with a tensile load without increasing the plate thickness or adding a reinforcing member.

  As described above, in the present invention, the first and second crossbar members are coupled to the bracket, and the bracket is coupled to the pillar member via the collar member. Therefore, when the conventional pillar member is coupled to the floor, In comparison, the entire apparatus can be miniaturized, the weight and cost can be reduced, and any input of roll load, side impact load, and tensile load can be handled.

It is a perspective view of the motor vehicle provided with the roll-bar apparatus by Example 1 of this invention. It is a perspective view of the roll bar device. It is a cross-sectional top view of the said roll-bar apparatus. It is a perspective view of the roll bar device. It is a front view of the roll bar device. FIG. 6 is a side view of the roll bar device (sectional view taken along line VI-VI in FIG. 5).

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

  1 to 6 are views for explaining a roll bar device for an automobile according to Embodiment 1 of the present invention. In the description of this embodiment, the terms front / rear and left / right mean front / rear and left / right when viewed in the vehicle forward direction while seated on the seat, unless otherwise specified.

  In the figure, reference numeral 1 denotes a car body of an open car provided with the roll bar device 2 of the present embodiment. The vehicle body 1 includes left and right side panels 3 and 3, doors 4 and 4 disposed in a door opening 3 a of the left and right side panels 3, and lower ends of the left and right side panels 3. And a left and right seat 5 and 5 mounted on the floor panel.

  A hood 8 that opens and closes the engine room is disposed at the front of the left and right side panels 3, and a luggage door 9 that opens and closes the luggage room is disposed at the rear.

  The left and right side panels 3 include a front pillar member 10 that forms a front edge portion of the door opening 3a, and a center pillar member 11 that forms a rear edge portion. The front pillar member 10 is covered with a fender apron 12, and the center pillar member 11 is covered with a quarter panel 13.

  The front pillar member 10 has a gate-shaped front frame portion 10a extending upward from the upper edges of the left and right side panels 3, and a windshield 14 is disposed on the front frame portion 10a.

  The left and right center pillar members 11 are each provided with a pillar rein hose 19 between an outer panel 17 having a generally hat-shaped cross section and an inner panel 18 having a substantially flat plate shape, and the front flange portion 11a and the rear flange portion 11b. By joining together by welding, it has the structure which formed the square cylinder-shaped closed cross section a extended in an up-down direction.

  The door 4 has a structure in which outer edge portions are joined to each other so as to form a hollow shape of the door outer panel 4a and the door inner panel 4b, and a window glass (not shown) is disposed in the door 4 so as to be movable up and down. ing.

  An impact beam 20 extending in the vehicle front-rear direction is disposed in the door 4. When viewed from the side of the vehicle, the impact beam 20 is disposed such that both end portions 20a wrap around the rear edge portion of the front pillar member 10 and the front edge portion of the center pillar member 11 (FIG. 3). reference). Thus, the impact beam 20 is stretched between the pillar members 10 and 11 at the time of a side collision, thereby suppressing the amount of the door 4 entering the vehicle interior.

  The roll bar device 2 is disposed on the rear side of the left and right seats 5 so as to extend in the vehicle width direction, and is attached to the left and right center pillar members 11.

  The roll bar device 2 is formed by combining the reverse U-shaped left and right roll bars 22, 22 disposed in the vicinity of the rear side of the seat back 5 a of each seat 5, and the roll bars 22. A first crossbar member 23 made of a metal pipe extending in the direction, a second crossbar member 24 made of a metal pipe extending in the vehicle width direction and offset from the lower front side of the first crossbar member 23, and the left , And metal plate brackets 25, 25 disposed on the right center pillar member 11.

  The roll bar device 2 includes metal bar connecting bar members 26 and 26 for connecting the left and right side portions of the first and second crossbar members 23 and 24 in the vertical direction, and the first and second crossbar members 23 and 24. A flat cover member 27 for connecting the left and right side portions of the crossbar members 23 and 24 and the connecting bar member 26 is provided.

  The connecting bar member 26 is bent in a stepped shape. The side end face 23a of the first crossbar member 23 is joined to the upper end portion 26a of the left and right connecting bar members 26 by welding. The lower end surface 26b of the left and right connecting bar members 26 is joined to the outer end portion 24a of the second crossbar member 24 by welding.

  A belt anchor 21 of a seat belt device for restraining an occupant to the seat 5 is attached to the upper end surfaces of the left and right connecting bar members 26, and a seat belt retractor (not shown) is attached to the cover member 27. It has been. The belt anchor 21 may be attached to the first crossbar member 23.

  The cover member 27 is coupled to the first and second crossbar members 23 and 24 and the connecting bar member 26 by welding. Thus, since the left and right side portions of the first and second crossbar bodies 23 and 24 are coupled by the cover member 27, the torsional rigidity of the first and second crossbar members 23 and 24 can be increased. Here, instead of the flat cover member 27, as shown by a two-dot chain line in FIG. 2, a shelf-like cover member 27 ′ having a vertical wall and a horizontal wall may be adopted.

  The left and right brackets 25 are, when viewed from the side of the vehicle, an oblique side portion 25a inclined obliquely downward in the front direction of the vehicle, a lower side portion 25b extending substantially horizontally in the vehicle front-rear direction, and a rear longitudinal side extending in the vertical direction. It has a substantially right triangle shape having a portion 25c (see FIG. 6).

  The left and right brackets 25 are bent so that an upper portion 25d is displaced from the lower side portion 25b toward the vehicle interior when viewed from the front of the vehicle, and the connecting bar member 26 is welded to the upper portion 25d. They are connected (see FIG. 5). Thereby, a space b is provided between the center pillar member 11 and the bracket 25. In this space b, for example, an open / close link mechanism when an electric open / close roof is mounted is disposed.

  The first crossbar member 23 is coupled to the upper end portion of the oblique side portion 25a of the bracket 25 with the connecting bar member 26 interposed therebetween. The second crossbar member 24 is directly coupled to the central portion in the front-rear direction of the lower side portion 25b of the bracket 25 by welding.

  A pair of upper and lower bolt insertion holes 25h are formed in the front end portion 25f and the rear end portion 25g of the lower side portion 25b of the bracket 25, respectively. The front-rear distance between the front end portion 25f and the rear end portion 25g is set to be approximately the same as the front-rear dimension of the center pillar member 11. Thus, by increasing the front-rear distance, the torsional rigidity of the first and second crossbar members 23 and 24 can be increased.

  The front end portion 25f is bent and formed in a stepped shape on the vehicle outer side so as to abut on the overlapping portion of the inner panel 18 and the reinhose 19 in the vicinity of the front flange portion 11a of the center pillar member 11. Further, the rear end portion 25g is formed to bulge out so as to protrude to the vehicle outer side so as to come into contact with the overlapping portion of the inner panel 18 and the rein hose 19 in the vicinity of the rear flange portion 11b of the center pillar member 11.

  The front end portion 25f and the rear end portion 25g of the bracket 25 are interposed through cylindrical front and rear collar members 29, 30 that are arranged in a closed cross section a of the center pillar member 11 in the vehicle width direction. Then, each fastening bolt 31 is fastened to the center pillar member 11.

  The collar members 29 and 30 are disposed between the outer panel 17 and the rein hose 19 of the center pillar member 11, and by tightening the fastening bolts 31 inserted into the collar members 29 and 30, the center pillars are arranged. The member 11 and the bracket 25 are coupled.

  A front end portion 25f of the bracket 25 is positioned at substantially the same height as the rear end portion 20a of the impact beam 20, and is overlapped with the rear end portion 20a when viewed from the side of the vehicle. The second crossbar member 24 is disposed at substantially the same height as the rear end 20a of the impingement beam 20. Thus, the side impact load at the time of a side collision is directly transmitted from the impact beam 20 to the second crossbar member 24 via the center pillar member 11 and the bracket 25.

  According to the present embodiment, the roll bar device 2 includes a first crossbar member 23 to which the roll bar 22 is coupled, and a second crossbar member 24 disposed on the vehicle front side lower side of the first crossbar member 23. The first crossbar member 23 is coupled to the upper portion of the oblique side portion 25a of the bracket 25, and the second crossbar member 24 is coupled to the lower side portion 25b of the bracket 25. The front and rear collar members 29, which are coupled to the front and rear central portions of the lower side portion 25b and are arranged so that the front end portion 25f and the rear end portion 25g of the lower side portion 25b are respectively bridged in the closed cross section a of the center pillar member 11 in the vehicle width direction. The center pillar member 11 is coupled to the center pillar member 11 by a fastening bolt 31 through 30.

  Since it comprised in this way, the roll load at the time of a fall is used for this center pillar member 11 using the closed cross-section a rigidity of the center pillar member 11 through the bracket 25 from the 1st, 2nd crossbar members 23 and 24 effectively. Can be distributed and transmitted efficiently. Thereby, it can respond to a roll load, without enlarging board thickness or adding a reinforcement member.

  Further, since the first and second crossbar members 23 and 24 are coupled to the left and right center pillar members 11 via the bracket 25, the first and second crossbar members 23 and 24 can be used for a vehicle having a low floor position and coupled to a conventional floor. Therefore, the extending portion for the purpose can be eliminated, the entire apparatus can be reduced in size, and the weight and cost can be reduced.

  In this embodiment, the side impact load at the time of a side collision is efficiently dispersed from the bracket 25 to the first and second crossbar members 23 and 24 via the front and rear collar members 29 and 30 of the center pillar member 11. Can communicate. Accordingly, it is possible to cope with a side collision load without increasing the plate thickness or adding a reinforcing member.

  Further, a forward tensile load acting on the belt anchor 21 is received by the first and second crossbar members 23 and 24 and the triangular bracket 25, and the center pillar member via the front and rear collar members 29 and 30. 11 can be efficiently dispersed and transmitted to the closed cross section a. As a result, it is possible to cope with a tensile load without increasing the plate thickness or adding a reinforcing member.

  In this embodiment, the first and second crossbar members 23, 24 are coupled to the left and right brackets 25, and the brackets 25 are coupled to the center pillar member 11 via the front and rear collar members 29, 30. Since it has a structure, the entire device can be reduced in size and weight and cost can be reduced as compared with the case where it is connected to the conventional pillar member and the floor, and any input of roll load, side impact load and tensile load can be achieved. Can also respond.

  Thus, since the roll bar device 2 can be reduced in size and weight, it can be mounted on the vehicle body without being divided, and the assembling work can be easily performed. That is, in the case of the conventional apparatus, since it is increased in size and weight, it is necessary to assemble it after being divided and mounted on the vehicle body, and there is a problem that workability is low.

  In this embodiment, since the front end portion 25f of the bracket 25 and the rear end portion 20a of the impact beam 20 are wrapped in the vehicle width direction, the second crossbar member 24 receives the side impact load from the impact beam 20 via the bracket 25. Therefore, the amount of the door 4 entering the room can be further suppressed.

2 Roll bar device 5 Sheet 11 Center pillar member 22 Roll bar 23 First cross bar member 24 Second cross bar member 25 Bracket 25f Front end 25g Rear end 29, 30 Color member 31 Fastening bolt (fastening member)
a Closed section

Claims (1)

A roll bar device for an automobile which is arranged to extend in the vehicle width direction behind the seat and is attached to the left and right pillar members,
A roll bar disposed in the vicinity of the back of the seat back of the seat;
A first crossbar member to which the roll bar is coupled;
A second crossbar member that is offset from the front lower side of the first crossbar member;
A bracket disposed on the left and right pillar members,
The first crossbar member is coupled to an upper portion of the bracket;
The second crossbar member is coupled to a lower portion of the bracket;
At least the front end portion and the rear end portion of the bracket are respectively coupled to the pillar member by a fastening member via a collar member that is disposed in a closed cross section of the pillar member in a vehicle width direction. A roll bar device for automobiles.

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