JP2006021607A - Structure and method for installing vehicular roll bar - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an installing structure and an installing method of a roll bar for a vehicle capable of installing a roll bar (a roll bar unit) by simply and surely positioning it relative to a vehicle body, improving mass-production efficiency of the vehicle having the roll bar by reducing an installation load. <P>SOLUTION: The lower end part of the pair of roll bars 13 of the roll bar unit 29 is positioned in at least vehicle width direction relative to a rear floor panel 5, and a pair of roll bar positioning and fixing mechanism 40 for fixedly fastening the roll bars in the vertical direction is provided. The fixing mechanism 40 for positioning each roll bar has a bolt member 41 which is fixed relative to the rear floor panel 5 and projects on the rear floor panel 5, and a fixing member 43 which is fixedly provided on the lower end part of the roll bar 13, and guided in the fore-and-aft direction by engaging with a screw 41b of the bolt member 41. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure and a method for assembling a roll bar disposed on the rear side of a seat of a vehicle to a vehicle body.

  In recent years, an open car whose roof is opened typically has an inverted U-shaped roll bar at the rear of the seat to protect the passenger's head and ensure a living space when the vehicle falls. It is installed. As a technique for assembling the roll bar to the vehicle body, in Patent Document 1, a component unit in which the roll bar and the hood are assembled in advance is assembled to the vehicle body. In this case, the flanges on the left and right lower ends of the roll bar and the roll bar The flanges at the left and right lower ends of the fixed gate-shaped reinforcing member are connected to the vehicle body, and the roll bar is assembled to the vehicle body.

Further, in Patent Document 2, a pair of roll bars is connected to a crossbar that is long in the vehicle width direction connecting the left and right side panels of the vehicle body, and the lower end of the pair of roll bars is connected to the floor panel. The roll bar is assembled to the vehicle body by connecting the lower ends of a pair of support columns each having an upper end fixed to the pair of roll bars.
JP 7-277118 A JP-A-11-115662

  As in the roll bar assembly structure of Patent Document 2, when a roll bar unit configured by connecting a roll bar and a cross bar in advance is assembled to a vehicle body, an assembly error between the roll bar and the cross bar of the roll bar unit is The lower end of the pair of roll bars is positioned and fixed with respect to a predetermined part of the floor panel due to an assembly error between the roll bar unit and the vehicle body, and the both ends of the cross bar in the vehicle width direction are fixed to the left and right side panels. It becomes difficult to position and fix to a predetermined part, and if the roll bar unit is forcibly assembled to the vehicle body, there is a possibility that the assembly rigidity of the roll bar cannot be secured.

  In other words, the connection between the roll bar unit and the vehicle body may not be able to absorb the error and a connection failure may occur, and in order to avoid this, many fine adjustments (for example, a shim) are required. Adjustment to be performed by sandwiching between members) is necessary. Thus, it is very difficult to position and assemble the roll bar unit in the vehicle width direction, further in the up-down direction, and further in the front-rear direction with respect to the vehicle body. Increases, and the mass production efficiency of a vehicle equipped with this roll bar is reduced. Note that the roll bar assembly structure of Patent Document 1 is not a configuration that can solve the above-described problems.

  An object of the present invention is to easily and reliably position and assemble a roll bar (roll bar unit) with respect to a vehicle body, to reduce an assembling load, and to improve mass production efficiency of a vehicle equipped with a roll bar. Etc.

  The assembly structure of the roll bar for a vehicle according to claim 1 is a floor which is disposed between the side panels constituting the left and right vehicle body side walls and the left and right side panels and forms a vehicle floor by connecting these side panels. A vehicle body provided with a panel is configured by previously connecting a cross bar long in the vehicle width direction for connecting the left and right side panels on the upper side of the floor panel and a roll bar disposed on the rear side of the seat of the vehicle. A pair of roll bar positioning and fixing mechanisms for positioning the lower end of the roll bar of the roll bar unit relative to the floor panel at least in the vehicle width direction and fastening and fixing from the vertical direction; Fastening and fixing both ends in the vehicle width direction of the cross bar of the roll bar unit to the left and right side panels from the front and rear directions 1 Characterized in that a cross bar locking mechanism.

  This vehicle roll bar assembly structure is a structure in which a roll bar unit configured by connecting a cross bar and a roll bar in advance is assembled to a vehicle body having left and right side panels and a floor panel. When the roll bar unit is assembled to the vehicle body, the lower end portion of the roll bar is positioned at least in the vehicle width direction with respect to the floor panel by a pair of positioning and fixing mechanisms, and is fastened and fixed from above and below. That is, the lower end portion of the roll bar can be easily and reliably positioned with respect to the predetermined portion of the floor panel. In this state, both ends in the vehicle width direction of the cross bar are fastened and fixed to the left and right side panels from the front and rear directions, respectively.

In the invention of claim 1, the following configuration can be adopted.
The roll bar positioning and fixing mechanism is fixed to the floor panel and protrudes on the floor panel. The roll bar positioning and fixing mechanism is fixedly provided at a lower end portion of the roll bar and is engaged with the positioning member and guided in the front-rear direction. And a fixing member (claim 2). The positioning member is composed of a bolt member arranged in an upward posture, and a fixing member engaged with the screw portion is fixed by screwing a nut into the screw portion.

  The vehicle body includes a cross member extending in the vehicle width direction along the floor panel, and the positioning member is fixedly provided on the cross member. A pair of link brackets for supporting an openable roof are fixed to the left and right side panels, respectively, and both ends of the crossbar are connected to the left and right side panels via the link brackets, respectively.

  The assembly structure of the roll bar for a vehicle according to claim 6 is a floor which is disposed between the side panels constituting the left and right vehicle body side walls and the left and right side panels and connects the side panels to form a vehicle floor surface. A roll bar disposed on the rear side of the seat of the vehicle is assembled to a vehicle body having a panel and a cross member extending in the vehicle width direction along the floor panel, and the lower end portion of the roll bar is crossed In order to position the member and fasten and fix the member from above and below, at least one pair of positioning members protruding on the floor panel are fixedly provided on the cross member, and at least one pair of fixing members engaging with the positioning members are provided. It is characterized by being fixedly provided at the lower end of the roll bar.

  This assembly structure of the roll bar for a vehicle is a structure in which the roll bar is assembled to a vehicle body including left and right side panels, a floor panel, and a cross member. The cross member is fixedly provided with at least one pair of positioning members protruding on the floor panel, and at least one pair of fixing members respectively engaged with the at least one pair of positioning members is provided at the lower end portion of the roll bar. It is fixedly provided. When assembling the roll bar to the vehicle body, the lower end of the roll bar is positioned by the cross member and fastened and fixed in the vertical direction with at least one pair of fixing members engaged with at least one pair of positioning members. That is, the lower end portion of the roll bar can be easily and reliably positioned at a predetermined portion of the cross member. For example, a roll bar unit configured by previously connecting the cross bar and the roll bar as in claim 1 It can also be applied to a structure that is assembled to the vehicle body.

  The method for assembling the vehicle roll bar according to claim 7 is a floor which is disposed between the side panels constituting the left and right vehicle body side walls and the left and right side panels and connects the side panels to form a vehicle floor surface. A roll bar disposed on the rear side of a seat of a vehicle, and a crossbar long in the vehicle width direction connecting the left and right side panels on the upper side of the floor panel; A first step of assembling the roll bar unit by connecting the roll bar in advance, and then fixing to the lower end of the roll bar with a pair of positioning members fixed to the floor panel and protruding on the floor panel A second step of positioning the lower end portion of the roll bar at least in the vehicle width direction with respect to the floor panel by engaging a pair of fixing members provided on the floor panel, respectively. , Then, it is characterized in that a third step for fastening and fixing the both vehicle transverse direction end portions of the cross bar from the respective longitudinal direction with respect to the left and right side panels.

  In this vehicle roll bar assembly method, first, in the first step, the roll bar unit can be easily assembled by connecting the cross bar and the roll bar in advance using, for example, a dedicated jig outside the vehicle. . Next, in the second step, the pair of positioning members fixed to the lower end portion of the roll bar are engaged with the pair of positioning members fixed to the floor panel and protruding on the floor panel. Thus, the lower end portion of the roll bar can be easily and reliably positioned with respect to a predetermined portion of the floor panel. As a result, both end portions in the vehicle width direction of the crossbar can be easily and reliably positioned with respect to predetermined portions of the left and right side panels. Next, in the third step, both end portions in the vehicle width direction of the crossbar Can be fastened and fixed to the left and right side panels from the front and rear directions, respectively.

  In the invention of claim 7, in the second step, the fixing member may be engaged with a positioning member fixedly provided on a cross member extending in the vehicle width direction along the floor panel. 8).

  According to the assembly structure of the roll bar for a vehicle of claim 1, the roll bar unit configured by connecting the cross bar and the roll bar in advance is assembled to the vehicle body including the left and right side panels and the floor panel. By providing the pair of roll bar positioning and fixing mechanisms, the lower end portion of the roll bar can be positioned at least in the vehicle width direction with respect to the floor panel and fastened and fixed from above and below. That is, the lower end portion of the roll bar can be easily and reliably positioned with respect to a predetermined portion of the floor panel. Therefore, both ends in the vehicle width direction of the cross bar are respectively determined with respect to the predetermined portions of the left and right side panels. Positioning can be performed easily and reliably, and in this state, both ends of the crossbar in the vehicle width direction can be fastened and fixed to the left and right side panels from the front and rear directions by a pair of crossbar fixing mechanisms. .

  Here, even if an assembly error between the roll bar and the cross bar of the roll bar unit or an assembly error between the roll bar unit and the vehicle body occurs, the lower end of the roll bar is reliably positioned with respect to the predetermined part of the floor panel. Therefore, when connecting the roll bar unit and the vehicle body, for example, when connecting them with bolts, the bolt holes are formed larger or formed into long holes, so that the error is absorbed and connected. This makes it possible to eliminate the need for time-consuming positioning fine adjustment (for example, adjustment performed by inserting a shim between members). In other words, the assembly load of the roll bar unit can be greatly reduced, the mass production efficiency of a vehicle equipped with this roll bar can be greatly improved, and in addition, the connection strength between the roll bar unit and the vehicle body can be increased, Assembling rigidity can be ensured.

  According to the assembly structure of the roll bar for a vehicle according to claim 2, the roll bar positioning and fixing mechanism is fixed to the positioning member fixed to the floor panel and protruding on the floor panel, and fixed to the lower end of the roll bar. The positioning member is engaged with the positioning member and guided in the front-rear direction, so that the positioning of the lower end portion of the roll bar with respect to the floor panel is reliably performed in the vehicle width direction by engaging the fixing member with the positioning member. Moreover, the fixing member is brought into contact with the floor panel by the own weight of the roll bar unit, so that the fixing can be performed in the vertical direction, and the lower end of the roll bar is fixed in the vertical direction with respect to the floor panel via the fixing member. It can be fastened easily and securely.

  According to the assembly structure of the roll bar for a vehicle according to claim 3, the positioning member is composed of a bolt member arranged in an upward posture, and the fixing is engaged with the screw portion by screwing the nut into the screw portion. Since the member is fixed, the roll bar fastening and fixing mechanism can be simplified by using this positioning member (bolt member) not only for positioning but also for fastening.

  According to the vehicle roll bar assembly structure of claim 4, the vehicle body includes a cross member extending in the vehicle width direction along the floor panel, and the positioning member is fixedly provided on the cross member. The part can be firmly connected to the vehicle body, and the function of the roll bar that secures the living space by protecting the occupant's head when the vehicle falls or the like can be enhanced. In addition, a pair of positioning members can be attached to the cross member outside the vehicle before the cross member is assembled to the vehicle body, and the distance between these positioning members can be accurately managed (adjusted). The bar unit can be assembled to the vehicle body. Further, it is possible to use a flange of a cross member and attach a pair of positioning members to the flange with a simple distance adjustment.

  According to the vehicle roll bar assembly structure of claim 5, the pair of link brackets that support the openable roof are fixed to the left and right side panels, respectively, and both ends of the cross bar are connected to the left and right sides via these link brackets. Since these are connected to the side panels, the connecting structure can be simplified without separately providing a member for connecting the crossbar to the side panel. Moreover, since the lower end part of a roll bar can be positioned with respect to a floor panel in a vehicle width direction, it becomes possible to perform these connections smoothly, without a cross bar interfering with a link bracket.

  According to the assembly structure of the roll bar for a vehicle according to claim 6, the roll bar is assembled to the vehicle body including the left and right side panels, the floor panel, and the cross member, and at least one pair protruding on the floor panel. Since the positioning member is fixedly provided on the cross member and at least one pair of fixing members respectively engaged with the positioning member is fixedly provided on the lower end portion of the roll bar, the lower end portion of the roll bar is positioned on the cross member. Can be fastened and fixed from above and below. That is, the lower end portion of the roll bar can be easily and reliably positioned at a predetermined portion of the cross member. For example, a roll bar unit configured by previously connecting the cross bar and the roll bar as in claim 1 Can also be applied to a structure assembled to the vehicle body. In this case, the same effect as in the first aspect can be obtained.

  In addition, the positioning of the lower end portion of the roll bar with respect to the cross member can be reliably performed in the vehicle width direction by setting the engaging direction of the fixing member to the positioning member in the front-rear direction, and the roll bar is fixed by its own weight. The member is brought into contact with the floor panel from the upper side, and it is reliably performed in the vertical direction. Moreover, the lower end portion of the roll bar can be easily and reliably fastened to the floor panel via the fixing member from the vertical direction. In addition, since at least one pair of positioning members are fixedly provided on the cross member, at least one pair of positioning members are attached to the cross member outside the vehicle before the cross member is assembled to the vehicle body, and the distance between the positioning members is determined. Since management (adjustment) can be performed accurately, the roll bar can be assembled to the vehicle body with higher accuracy. In addition, it is possible to use a flange of a cross member and attach at least one pair of positioning members to the flange with a simple distance adjustment.

  According to the method for assembling the roll bar for a vehicle of claim 7, by providing the first step, first, the cross bar and the roll bar are connected in advance outside the vehicle, for example, using a dedicated jig, and then rolled. The bar unit can be easily assembled, and by providing the second step, it is then fixed to the lower end of the roll bar to a pair of positioning members that are fixed to the floor panel and project on the floor panel The lower end of the roll bar can be easily and reliably positioned with respect to the floor panel by engaging a pair of fixed members provided respectively, so that both ends of the cross bar in the vehicle width direction can be Each of the side panels can be easily and reliably positioned with respect to a predetermined portion of the side panel, and by providing the third step, next, both ends of the cross bar in the vehicle width direction are connected to the left and right side panels. They can be fastened from each of the front and rear direction with respect to the.

  According to the vehicle roll bar assembling method of the eighth aspect, in the second step, the fixing member is engaged with the positioning member fixedly provided on the cross member extending in the vehicle width direction along the floor panel. The lower end portion of the bar can be firmly connected to the vehicle body, and the function of the roll bar that secures the living space by protecting the passenger's head when the vehicle falls or the like can be enhanced.

  The vehicle roll bar assembly structure of the present invention includes a side panel that forms left and right vehicle body side walls, and a floor panel that is disposed between the left and right side panels and connects the side panels to form a vehicle floor surface. And a roll bar arranged in advance in the vehicle width direction for connecting the left and right side panels on the upper side of the floor panel and a roll bar disposed on the rear side of the seat of the vehicle. A pair of roll bar positioning and fixing mechanisms for positioning a lower end portion of the roll bar of the roll bar unit relative to the floor panel at least in the vehicle width direction and fastening and fixing from above and below the roll unit; A pair of fastened and fixed both ends of the cross bar of the bar unit to the left and right side panels from the front and rear directions, respectively. It is obtained by a crossbar fixing mechanism.

Embodiments of the present invention will be described below with reference to the drawings.
The present embodiment is an example in which the present invention is applied to a vehicle 1 (automobile 1) that is an open car whose roof is opened by two theta.
FIG. 1 is a perspective view of the inside of a vehicle 1 provided with the assembly structure of a roll bar for a vehicle according to the present invention, and FIG. 2 is a left side view of the inside of the vehicle 1.

  As shown in FIGS. 1 and 2, a vehicle body 2 of a vehicle 1 includes a floor panel 3 that forms a floor surface of a passenger compartment, and a kick-up panel 4 that extends upward and rearward from a rear end portion of the floor panel 3 in an inclined manner. A rear floor panel 5 that extends rearward from the upper end of the kick-up panel 4 to form a floor surface of the cargo compartment, and a side panel 6 that constitutes left and right vehicle body side walls (the vehicle body outer surface and the vehicle interior side inner surface). I have. The rear floor panel 5 is disposed between the inner panels 21 of the left and right side panels 6, and the left and right inner panels 21 are connected to each other by the rear floor panel 6.

  The vehicle body 2 of the vehicle 1 has a pair of side sills 7 extending in the front-rear direction connected to the left and right ends of the floor panel 3, an upper end portion of the kick-up panel 4, and a front end portion of the rear floor panel 5. And a cross member 8 extending in the vehicle width direction along the rear floor panel 5 is provided. The cross member 8 is formed in a closed cross section with the kick-up panel 4 and the rear floor panel 5, and the rear end portion of the backbone frame 9 that is long in the front-rear direction is connected to the center portion of the cross member 8 in the vehicle width direction.

  The vehicle 1 is equipped with a pair of left and right seats 10 (seats 10). The floor panel 3 is provided with a front seat bracket 11 and a rear seat bracket 12 corresponding to each seat 10, and these are provided. A seat 10 (only the left seat 10 is shown in FIG. 1) is attached to the seat brackets 11 and 12. The vehicle roll bar assembling structure and the assembling method thereof according to this embodiment are a structure in which a pair of left and right inverted U-shaped roll bars 13 respectively disposed on the rear side of a pair of seats 10 are assembled to the vehicle body 2. And method.

  Link brackets 15 are fixed to the left and right side panels 6 to rotatably support a hood 14 or a retractable hard top (not shown) that is an openable roof. To each link bracket 15, base ends of links 16 and 17 for opening and closing the hood 14 are rotatably attached. FIG. 2 shows a state where the hood 14 is folded and the hood 14 and the links 16 and 17 are stored in the hood storage portion 18. A fuel tank 19 is provided below the hood storage portion 18 on the rear side of the kick-up panel 4 and the cross member 8.

Next, the assembly structure of the vehicle roll bar will be described.
As shown in FIGS. 1 to 9, this vehicle roll bar assembly structure includes a crossbar 30 that is long in the vehicle width direction and connects the left and right side panels 6 to the vehicle body 2 on the upper side of the rear floor panel 5. A roll bar unit 29 configured by connecting a pair of roll bars 13 in advance is assembled. For this purpose, the lower end portions of the pair of roll bars 13 of the roll bar unit 29 are connected to the rear floor panel 5 respectively. A pair of roll bar positioning and fixing mechanisms 40 that are positioned in the width direction and the vertical direction and fastened and fixed from the vertical direction, and both ends of the cross bar 30 of the roll bar unit 29 in the vehicle width direction are respectively left and right side panels 6. And a pair of crossbar fixing mechanisms 50 that are fastened and fixed in the front-rear direction.

  In this vehicle roll bar assembly structure, each roll bar 13 and the inner panel 21 closer to the roll bar 13 are connected to each other below the cross bar 30 and each roll bar 13 and the cross member are connected. 8 is provided.

  Here, the side panel 6 will be described. As shown in FIG. 13, each side panel 6 includes an outer panel 20 that constitutes the outer side surface of the vehicle body, an inner panel 21 that constitutes the vehicle interior side inner surface, an outer panel 20 and an inner panel. A reinforcement 22 is disposed between the panels 21 to reinforce at least one of the panels 20 and 21. A reinforcement 23 is also provided. In the case of the present embodiment, a portion of each side panel 6 to which the connecting member 60 is connected becomes the rear pillar portion 2a, and the vicinity of the rear pillar portion 2a includes the outer panel 20, the inner panel 21, and the reinforcement 22, The distance between the outer panel 20 and the inner panel 21 in the vehicle width direction is relatively wide.

  As shown in FIGS. 1 to 4, the pair of roll bars 13 is configured symmetrically, and each roll bar 13 is formed by forming a single round pipe into a U shape and is upside down in an inverted U shape. The upper portion of the seat 10 is disposed on the rear side of the headrest of the seat 10. Each roll bar 13 has a roll bar upper portion 13a that is largely bent in a U-turn shape, and left and right roll bar outer portions 13b and a roll bar inner portion 13c that extend downward from the roll bar upper portion 13a.

  The roll bar outer portion 13b extends longer than the roll bar inner portion 13c, and the middle portion thereof is connected to the cross bar 30 in a penetrating manner. The lower end portion thereof is positioned with respect to the rear floor panel 5 by the roll bar positioning and fixing mechanism 40 and fastened and fixed from above and below. The roll bar inner portion 13c is connected to the cross bar 30 in a penetrating manner so that the lower end portion thereof does not protrude downward greatly from the cross bar 30.

  As shown in FIGS. 3 to 9, the crossbar 30 has a front crossbar member 31 and a rear crossbar member 32 having a U-shaped cross section that opens rearward, and the flanges of these members 31 and 32 are welded to each other. The closed cross section is formed by joining. At both ends in the vehicle width direction of the front-side crossbar member 31, an arc recess 33a that opens rearward is formed in the upper wall portion 31a and the lower wall portion 31b, respectively, and the vertical wall portion on the front side of the arc recess 33a A pair of upper and lower bolt holes 34a are formed in 31c.

  Further, at both ends in the vehicle width direction of the front crossbar member 31, a flange portion 31d that is an extension of the vertical wall portion 31c is formed on the outer side in the vehicle width direction than the bolt hole 34a, and the flange portion 31d. A pair of upper and lower bolt holes 35 are formed in the upper and lower sides. A pair of left and right hole portions 36 are formed in the upper wall portion 31a and the lower wall portion 31b on the inner side in the vehicle width direction than the pair of arc concave portions 33a, and the roll bar of the pair of roll bars 13 is formed in these hole portions 36. Each inward portion 13c penetrates.

  Roll bar support portions 32a projecting forward are provided at both ends in the vehicle width direction of the rear side crossbar member 32, respectively, and arc recesses 33b that open forward are formed in the upper wall portion 32b and the lower wall portion 32c. A pair of upper and lower bolt holes 34b are formed in the vertical wall portion 32d on the rear side of the circular arc recess 33b. When the front crossbar member 31 and the rear crossbar member 32 are joined, a pair of left and right holes 33 are formed by a pair of arc recesses 33a and a pair of arc recesses 33b. The roll bar outer portions 13b of the pair of roll bars 13 pass through.

  The connection between the roll bar 13 and the cross bar 30 will be described in detail. As shown in FIG. 4, the roll bar inner part 13 c, the upper wall part 31 a and the lower wall part 31 b of the front crossbar member 31 are formed of holes. 36, the roll bar outer part 13b, the upper wall part 31a and the lower wall part 31b of the front crossbar member 31 are welded along the outer peripheral part of the hole 33. Further, as shown in FIGS. 8 and 9, the roll bar outer portion 13 b and the cross bar 30 are coupled by a pair of bolts 51 and nuts 52 of the cross bar fixing mechanism 50.

  The bolt holes 34a and 34b are formed with a diameter larger than the diameter of the bolt 51 through which the bolt holes 34a and 34b are inserted, and the bolt hole 35 is larger than the diameter of the bolt 53 through which the bolt hole 35 is inserted. Is formed.

Next, each crossbar fixing mechanism 50 will be described.
As shown in FIGS. 7 to 9, each crossbar fixing mechanism 50 has two sets of upper and lower bolts 51 and nuts 52 on the inner side in the vehicle width direction, and two sets of upper and lower bolts 53 and nuts 54 on the outer side in the vehicle width direction. The end portions of the cross bar 30 are fastened and fixed to the link bracket 15 from the front and rear directions by the bolts 51 and 53 and the nuts 52 and 54, and are connected to the side panel 6 via the link bracket 15.

  As shown in FIGS. 8 and 9, the link bracket 15 includes, for example, three members 15 a to 15 c, the member 15 a is fixed to the inner surface of the side panel 6, and the member 15 b is fixed to the member 15 a and A receiving portion 15d that extends inward in the vehicle width direction and receives the outer end in the vehicle width direction of the cross bar 30 from the front side is formed at the inner end portion of the member 15a. The cross bar 30 is bolted to the receiving portion 15d. 50 and nut 51 are connected. Further, a receiving portion 15e is formed at the front end portion of the member 15b and is fixed to the member 15c and extends rearward and inward in the vehicle width direction, and a receiving portion 15e for receiving the flange portion 31d of the crossbar 30 from the front side is formed at the inner end portion of the member 15c. The flange portion 31d is connected to the receiving portion 15e by a bolt 53 and a nut 54.

Next, each roll bar positioning and fixing mechanism 40 will be described.
As shown in FIGS. 1, 2, and 10 to 12, each roll bar positioning and fixing mechanism 40 includes a bolt member 41 that corresponds to a positioning member that is fixed to the rear floor panel 5 and protrudes from the rear floor panel 5. The nut 42 screwed into the screw portion 41b of the bolt member 41 and the lower end portion of the roll bar outer portion 13b of the roll bar 13 are fixedly provided and engaged with the bolt member 41 to be guided in the front-rear direction. It has a fixing member 43, two bolts 44 other than the bolt member 41, and nuts 45 screwed into the bolts 44, respectively.

  The bolt member 41 is disposed in an upward posture so that the head portion 41a is located inside the cross member 8, and the head portion 41a is welded to the lower surface of the flange 8a at the upper rear portion of the cross member 8. A bolt member 41 is provided in a fixed manner. A bolt hole 8b is formed in the flange 8a of the cross member 8, and a bolt hole 5a is formed in the rear floor panel 5 so as to coincide with the bolt hole 8b. The screw portion 41b of the bolt member 41 has the bolt holes 8b, 5a. It passes through and extends upward and protrudes upward from the rear floor panel 5.

  The fixing member 43 includes a substantially triangular bottom plate portion 43a that contacts the upper surface of the rear floor panel 5, an outer peripheral flange portion 43b that rises from the outer peripheral portion of the bottom plate portion 43a, and an annular central flange portion 43c that rises from the central portion of the bottom plate portion 43a. And an engaging portion 43d that engages with the screw portion 41b of the bolt member 41, and a guide portion 43e that is guided by the screw portion 41b so that the screw portion 41b engages with the engaging portion 43d.

  The lower end of the roll bar outer portion 13b is fitted into the center flange portion 43c, and the fixing member 43 is adjusted to the roll bar 13 so as to have an appropriate height and fixed by welding. Here, by forming the outer peripheral flange portion 43 b on the fixing member 43, the strength and rigidity of the fixing member 43 can be increased, and the lower end portion of the roll bar outer portion 13 b and the cross member 8 are interposed via the fixing member 43. Can be reliably connected.

  The bottom plate portion 43a is formed with an engaging portion 43d cut out in the shape of a long hole extending in the front-rear direction at the rear portion thereof, and is connected to the rear end portion of the engaging portion 43d on the rear side of the engaging portion 43d. A guide part 43e that is rearwardly wide and has a letter shape is formed. The bottom plate portion 43a has a pair of left and right bolt holes 43f in the front portion thereof, and bolt holes 5b corresponding to the bolt holes 43f are formed in the rear floor panel 5. The pair of nuts 45 is welded in advance to the lower surface of the rear floor panel 5 so as to coincide with the bolt holes 5b.

  Then, the engaging portions 43d of the pair of fixing members 43 are engaged with the screw portions 41b of the pair of bolt members 41, respectively. In each fixing member 43, for example, the screw portion 41b is provided at the front end portion of the engaging portion 43d. In the close state, the pair of bolt holes 43f coincide with the pair of bolt holes 5b of the rear floor panel 5, and in this state, the nut 42 is screwed onto the screw 41b from above and the pair of bolts 44 is The fixing members 43 are fixed to the rear floor panel 5 and the cross member 8 by being inserted through the bolt holes 43f and 5b from above and screwed into the nuts 45, respectively. The bolt hole 43f is formed to have a larger diameter than the diameter of the bolt 44 inserted through the bolt hole 43f.

  The connecting member 60 will be described. As shown in FIG. 10, the connecting member 60 is a member that connects the roll bar 13 to the side panel 6 and the cross member 8 on the lower side of the cross bar 30. It is formed by molding a metal round pipe base material. A midway portion in the length direction of the connecting member 60 is compression-molded and formed into a flat plate shape, and is connected to a bracket 61 fixed to the roll bar outer portion 13 b of the roll bar 13 by a bolt 62.

  The inner end portion in the vehicle width direction of the connecting member 60 is compression-molded and formed into a flat plate shape, and is connected to the cross member 8 by a bolt 63, and the outer end portion in the vehicle width direction of the connecting member 60 is welded to the flange member 70. . The flange member 70 is formed in an oval shape (oblong shape) in a side view, and is disposed so as to be inclined forward and downward. Thereafter, the connecting member 60 is fixed to the inner surface of the upper portion, and the front lower portion thereof is attached to the inner panel 21. They are connected by bolts 71.

  Next, a method for assembling the vehicle roll bar will be described based on the process diagram of FIG. This method of assembling the vehicle roll bar is a method of assembling a pair of roll bars 13 to the vehicle body 2 including the rear floor panel 5, the left and right side panels 6, and the cross member 8. The link bracket 15 and the pair of bolt members 41 are already assembled to the vehicle body 2.

  In this vehicle roll bar assembling method, first, in the first step (P1), the cross bar 30 and the pair of roll bars 13 which are long in the vehicle width direction and connect the left and right side panels 6 on the upper side of the rear floor panel 5. Are connected in advance to assemble the roll bar unit 29. In this case, as shown in FIG. 15, in a state where the front crossbar member 31 and the rear crossbar member 32 of the crossbar 30 are separated, first, as shown by an arrow A, in the roll bar of each roll bar 13 The side portion 13c is inserted into the hole portion 36 of the front crossbar member 31 from above. At this time, the roll bar outer portion 13 b is positioned rearward of the front crossbar member 31.

  Next, as indicated by the arrow B, each roll bar 13 is rotated around the roll bar inner part 13 c, and the roll bar outer part 13 b is fitted into the circular arc recess 34 a of the front crossbar member 31. At that time, the height adjustment is performed so that the pair of upper and lower cylindrical spacers 37 fixed in a penetrating manner to the outer portion 13b of the roll bar coincide with the bolt holes 34a. Next, as shown by an arrow C, when the front crossbar member 31 is combined with the rear crossbar member 32, a hole 34 is formed by the arcuate recesses 34a and 34b facing each other, and a roll is formed in the hole 34. The bar outer portion 13b is penetrated.

  After the rear crossbar member 32 is combined with the front crossbar member 31 or before the combination, each roll bar 13 and the front crossbar member 31 (rear crossbar member 32) are welded to a necessary portion. To combine. Moreover, while fixing the bracket 61 to the roll bar outer part 13b of each roll bar 13, the fixing member 43 is fixed to the lower end part of the roll bar outer part 13b. In this case, the lower end portion of the roll bar outer portion 13b is fixed to the center flange portion 43c of the fixing member 43 by welding in a state in which the lower end portion is adjusted in height. Thus, the roll bar unit 29 shown in FIG. 16 is configured.

  Next, in the second step (P2), a pair of bolt members 41 fixed to the rear floor panel 5 and projecting on the floor panel 5 are fixedly provided at the lower ends of the pair of roll bars 13. Further, the pair of fixing members 43 are engaged, the lower end portion of the roll bar 13 is positioned in the vehicle width direction and the vertical direction with respect to the rear floor panel 5, and the cross member 8 is engaged with the link bracket 15. In this case, for example, with the roll bar unit 29 slightly tilted forward, the screw 41b of the bolt member 41 is engaged with the guide portion 43e of each fixing member 43, and then the roll bar unit 29 is returned to the vertical posture. While pushing backwards.

  At that time, the guide portion 43e of each fixing member 43 is guided by the screw 41b, the engaging portion 43d is reliably engaged with the screw 41b, and the fixing member 43 is guided in the front-rear direction. Therefore, the roll bar unit 29 is positioned with respect to the rear floor panel 5 in the vehicle width direction. When the roll bar unit 29 is in a vertical posture, each fixing member 43 comes into contact with the rear floor panel 5 so that the roll bar unit 29 is positioned in the vertical direction with respect to the rear floor panel 5 and the flange portion of the cross bar 30 31d is received from the front side by the receiving portion 15e of the link bracket 15, and the roll bar unit 29 is positioned in the front-rear direction.

  Thus, in the state where the roll bar unit 29 is positioned, the bolt holes 34a, 34b, 35 of the cross bar 30 are formed to have a larger diameter than the diameters of the bolts 51, 53 even if some errors due to this assembly occur. The bolt holes 34a, 34b, 35 and the bolt holes on the link bracket 15 side are coincident with each other, and the bolt hole 43f of the fixing member 43 is larger than the diameter of the bolt 44 through which the bolt hole 43f is inserted. The bolt hole 43f and the bolt hole 8b on the cross member 8 side may coincide with each other.

  Next, in the third step (P3), the bolt 51 is inserted into the bolt holes 34a and 34b and screwed into the nut 52, and the bolt 53 is inserted into the bolt hole 35 and screwed into the nut 54 to cross Both ends of the bar 30 in the vehicle width direction are fastened and fixed to the link brackets 15 fixed to the left and right side panels 6 from the front and rear directions, respectively.

  Next, in the fourth step (P4), the bolts 44 are inserted into the bolt holes 43f and 5b and screwed into the nuts 45, and the nuts 42 are screwed into the screws 41b of the bolt members 41 to be attached to the rear floor panel 5. On the other hand, the fixing member 43 is fixed, and then, in the fifth step (P5), the connecting members 60 are fixed to the roll bar 13, the side panel 6, and the cross member 8 as described above, and the process is ended.

According to the assembly structure and the assembly method of the vehicle roll bar described above, the following operations and effects are achieved.
By providing the pair of roll bar positioning and fixing mechanisms 40, the lower end portion of the pair of roll bars 13 (roll bar outer portion 13b) of the roll bar unit 29 is directed to the rear floor panel 5 in the vehicle width direction and the vertical direction. It can be positioned and fastened and fixed from above and below. That is, the lower end portions of the pair of roll bars 13 can be easily and reliably positioned with respect to a predetermined portion of the rear floor panel 5, and therefore both end portions in the vehicle width direction of the cross bar 30 are connected to the left and right side panels 6. In this state, both ends of the crossbar 30 in the vehicle width direction are connected to the left and right link brackets by a pair of crossbar fixing mechanisms 50. 15 can be fastened and fixed from the front-rear direction.

  Even when an assembly error between the roll bar 30 of the roll bar unit 29 and the pair of cross bars 13 or an assembly error between the roll bar unit 29 and the vehicle body 2 occurs, the lower end of the pair of roll bars 13 is connected to the rear floor panel. 5 can be surely positioned with respect to a predetermined portion of the vehicle, so that the roll bar unit 29 and the vehicle body 2 can be connected by forming bolt holes 34a, 34b, 35, 43f larger when bolting them together. Thus, the error can be absorbed and the connection can be made, and a troublesome positioning fine adjustment (for example, an adjustment performed by inserting a shim between members) becomes unnecessary. That is, the assembly load of the roll bar unit 29 can be greatly reduced, the mass production efficiency of the vehicle 1 equipped with the roll bar 13 can be greatly improved, and the connection strength between the roll bar unit 29 and the vehicle body 2 can be increased. The assembly rigidity of the roll bar 13 can be secured.

  The roll bar positioning and fixing mechanism 40 is fixed to the rear floor panel 5 and protrudes from the rear floor panel 5, and is fixedly provided at the lower end of the roll bar 13 and engages with a screw 41 b of the bolt member 41. Therefore, the positioning of the lower end portion of the roll bar 13 with respect to the rear floor panel 5 can be reliably performed in the vehicle width direction by engaging the fixing member 43 with the screw 41b. Further, the fixing member 43 is brought into contact with the rear floor panel 5 by the own weight of the roll bar unit 29 so as to be surely moved in the vertical direction, and the lower end portion of the roll bar 13 is connected to the rear floor panel 5 through the fixing member 43. On the other hand, it can be fastened easily and reliably from the vertical direction.

  The roll bar fastening and fixing mechanism 40 can be simplified by using the bolt member 41 not only for positioning but also for fastening. The vehicle body 2 includes a cross member 8 extending in the vehicle width direction along the rear floor panel 5, and the bolt member 41 is fixedly provided on the cross member 8, so that the lower end portion of the roll bar 13 is firmly connected to the vehicle body. It is possible to enhance the function of the roll bar 13 that protects the occupant's head and secures a living space when the vehicle falls. Moreover, since the pair of bolt members 41 can be attached to the cross member 8 outside the vehicle before the cross member 8 is assembled to the vehicle body 2, the distance between the bolt members 41 can be accurately managed (adjusted). The roll bar unit 29 can be assembled to the vehicle body 2 with higher accuracy. Further, the flange 8a of the cross member 8 is used, and a pair of bolt members 41 can be easily attached to the flange 8a by adjusting the distance.

  Since a pair of link brackets 15 supporting the openable hood 14 are fixed to the left and right side panels 6 respectively, and both ends of the crossbar 30 are connected to the left and right side panels 6 via these link brackets 15 respectively. These connecting structures can be simplified without separately providing a member for connecting the cross bar 30 to the side panel 6. Further, since the lower end portion of the roll bar 13 can be positioned in the vehicle width direction with respect to the rear floor panel 5, it is possible to smoothly connect the cross bar 30 without interfering with the link bracket 15.

The said Example can be changed as follows.
1] A cross member extending in the vehicle width direction is provided on the upper side of the rear floor panel 5, and the lower end portion of the roll bar of the roll bar unit is positioned in the vehicle width direction by the roll bar positioning and fixing mechanism and fastened from above and below. Fix it.
2] As a positioning member, a pin member having only a positioning function is applied without using a bolt member that is also used for fastening.
3] The both ends of the crossbar 30 in the vehicle width direction are directly connected to the left and right side panels 6 without the link bracket 15 by the crossbar fixing mechanism.

4] The cross bar 30 is omitted, and the lower end portion of the roll bar 13 is positioned on the cross member 8 and fastened and fixed from above and below. For this purpose, at least one pair of positioning members protruding on the rear floor panel 5 are fixedly provided on the cross member 8, and at least one pair of fixing members respectively engaged with these positioning members are fixed to the lower end portion of the roll bar 13. Provided.
5] The present invention can be applied to a structure / method of assembling a roll bar on the vehicle body in various vehicles provided with a roll bar in addition to the two-theta open car as in the above embodiment.

It is a perspective view inside a vehicle provided with the assembly structure of the roll bar for vehicles of the present invention. It is a left view inside a vehicle. It is a perspective view of a cross bar. It is a front view of a roll bar and a cross bar. It is the VV sectional view taken on the line of FIG. It is a disassembled perspective view of a crossbar. It is a perspective view which shows the connection structure of a link bracket and a cross bar. It is the VIII-VIII sectional view taken on the line of FIG. It is the IX-IX sectional view taken on the line of FIG. It is a perspective view which shows the connection structure containing a roll bar positioning fixing mechanism. It is a perspective view of a roll bar and a roll bar positioning fixing mechanism. It is the XII-XII sectional view taken on the line of FIG. It is a cross-sectional view of a side panel. It is process drawing of the assembly method of the roll bar for vehicles. It is a perspective view of the assembly stage of a roll bar unit. It is a front view of a roll bar unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 5 Rear floor panel 6 Side panel 8 Cross member 10 Seat 13 Roll bar 15 Link bracket 30 Cross bar 40 Roll bar positioning fixing mechanism 41 Bolt member 41b Screw part 43 Fixing member 50 Cross bar fixing mechanism

Claims (8)

A vehicle body having a side panel constituting left and right vehicle body side walls and a floor panel disposed between the left and right side panels and connecting the side panels to form a vehicle floor surface, the upper side of the floor panel In the structure to assemble a roll bar unit configured in advance by connecting a cross bar long in the vehicle width direction connecting the left and right side panels and a roll bar arranged on the seat rear side of the vehicle,
A pair of roll bar positioning and fixing mechanisms for positioning the lower end portion of the roll bar of the roll bar unit at least in the vehicle width direction with respect to the floor panel and fastening and fixing from the vertical direction;
A pair of crossbar fixing mechanisms that fasten and fix both ends in the vehicle width direction of the crossbar of the roll bar unit to the left and right side panels, respectively, from the front-rear direction;
An assembly structure of a roll bar for a vehicle, comprising:   The roll bar positioning and fixing mechanism is fixed to the floor panel and protrudes on the floor panel. The roll bar positioning and fixing mechanism is fixedly provided at a lower end portion of the roll bar and is engaged with the positioning member and guided in the front-rear direction. The vehicle roll bar assembly structure according to claim 1, further comprising a fixing member.   The said positioning member consists of a bolt member arrange | positioned by the upward attitude | position, The fixing member engaged with the screw part is fixed by screwing a nut in the screw part. Assembly structure for roll bars for vehicles.   The vehicle roll bar assembly structure according to claim 2, wherein the vehicle body includes a cross member extending in a vehicle width direction along the floor panel, and the positioning member is fixedly provided on the cross member.   A pair of link brackets for supporting an openable roof are fixed to the left and right side panels, respectively, and both ends of the crossbar are connected to the left and right side panels via the link brackets, respectively. Item 5. An assembly structure of a roll bar for a vehicle according to any one of Items 1 to 4. A side panel that forms the left and right vehicle body side walls, a floor panel that is disposed between the left and right side panels and connects the side panels together to form a vehicle floor surface, and along the floor panel in the vehicle width direction A structure in which a roll bar disposed on the rear side of a seat of a vehicle is assembled to a vehicle body having an extending cross member,
In order to position the lower end portion of the roll bar on the cross member and fasten and fix it from above and below, at least one pair of positioning members protruding on the floor panel are fixedly provided on the cross member and engaged with these positioning members, respectively. An assembly structure for a roll bar for a vehicle, wherein at least one pair of fixing members is fixedly provided at a lower end portion of the roll bar. On the rear side of the seat of the vehicle, the vehicle is provided with a side panel that forms the left and right side walls of the vehicle body, and a floor panel that is disposed between the left and right side panels and connects the side panels to form a vehicle floor surface. A method of assembling a roll bar disposed in
A first step of assembling a roll bar unit by previously connecting a cross bar and a roll bar that are long in the vehicle width direction connecting the left and right side panels on the upper side of the floor panel;
Next, a pair of fixing members fixedly provided at the lower end of the roll bar are engaged with a pair of positioning members fixed to the floor panel and projecting on the floor panel, respectively. A second step of positioning the lower end portion of at least the floor panel in the vehicle width direction;
Next, a third step of fastening and fixing both ends of the cross bar in the vehicle width direction to the left and right side panels from the front and rear directions, respectively,
An assembly method for a roll bar for a vehicle, comprising:   8. The vehicle roll bar according to claim 7, wherein in the second step, the fixing member is engaged with a positioning member fixedly provided on a cross member extending in the vehicle width direction along the floor panel. Assembly method.