JP2006160143A - Rear bodyframe of convertible - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rear bodyframe of convertible capable of avoiding interference between a connecting member and a vehicle mounted member while keeping rigidity of the convertible. <P>SOLUTION: There are provided a pair of right and left side panels, a link bracket 14 fixed to each of the side panels to support a link mechanism 13 for an opened or closed roof, a cross-bar 92 arranged between each of the link brackets 14 along a vehicle width direction, and a connecting member 15 for connecting both longitudinal ends of the cross-bar 92 and each of the link brackets 14 in a vehicle width direction. The connecting member 15 has a connecting main body 154a provided with an interference avoiding cavity 150 for avoiding an interference between it and the opened or closed roof, and an overlapped protruding plate 154b overlapped at the cross-bar 92 while the rear surface wall is extended inwardly toward the vehicle width direction. There is provided a reinforcing member 17 connected to the connecting member 15 at its predetermined location ranging from an opening edge of the interference avoding cavity 150 to the base end of the overlapped protruding plate 154b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention has a so-called open car rear body structure that has an openable / closable roof that can be opened and closed by a link mechanism in an automobile, and that can be accommodated in a predetermined portion of the vehicle in an open state to open a vehicle compartment upward. About.

  In this type of open car, since the roof panel is not fixedly mounted, various reinforcement structures are employed to supplement the rigidity of the vehicle body, and various safety structures are employed from the viewpoint of occupant protection during rolling over. (For example, refer to Patent Document 1).

For example, the rear body structure of the open car described in Patent Document 1 includes a pair of left and right side panels that constitute the side wall of the vehicle body, and a pair of left and right link brackets that are attached to each side panel and support the link mechanism of the openable hood. A pair of left and right roll bars fixed to the rear part of the vehicle body, and a cross bar part extending in the vehicle width direction and connecting the pair of roll bars to each other. The crossbar portion is connected to the side panel, which is the side wall of the vehicle body, by connecting both end portions in the longitudinal direction of the crossbar portion to the respective link brackets. The vehicle body rigidity is effectively improved while suppressing the increase.
JP-A-11-321334

  By the way, in this kind of open car, various vehicle-mounted members may be accommodated in the space behind the crossbar portion, and it is required to efficiently accommodate the vehicle-mounted members in a limited space. And if it is going to accommodate a vehicle-mounted member efficiently in this limited space, the connection part between the longitudinal direction both ends of a crossbar part and a side panel may become obstructive.

  For example, the openable roof of an open car is configured to be openable and closable by a link mechanism as described in Patent Document 1, and is accommodated in a roof accommodating space provided behind the roll bar in an open state. It is configured. When the openable roof is made of a relatively flexible material such as a hood, the hood is folded in a flexible manner so that a soft type openable roof and link mechanism can be efficiently installed in a limited roof storage space. However, when the roof housing space is designed to be short in the vehicle length direction, such as when the vehicle length is designed to be short, the link mechanism interferes with the connecting portion. May occur.

  In addition, the openable roof includes a hard type composed of a steel plate or the like. When the hard type openable roof is accommodated in the roof accommodating space, a plurality of panels (for example, a roof panel constituting a top plate, The panel is divided into a pillar panel constituting a rear pillar, a glass panel constituting a rear glass, and the like, and each panel is rotationally driven by a link mechanism, whereby each panel is accommodated in a roof accommodating space. However, in the rear vehicle body structure described in Patent Document 1, when this hard type openable roof is to be accommodated in a limited roof accommodating space, a part of the panel, particularly a part of the pillar panel, is Interference with the connecting part between the side panel and the crossbar part that extends linearly in the vehicle width direction, and the connecting part between the side panel and the side panel becomes an obstacle, making these panels efficiently in a limited space It was difficult to accommodate.

  In this respect, it is conceivable to reduce the cross-sectional area of the connecting portion so as to avoid interference between the link mechanism and each panel of the openable roof and the connecting portion, thereby solving the above-mentioned problem. In this case, there arises a new problem that the rigidity of the open car is lowered.

  The present invention has been made under such circumstances, and while maintaining the rigidity of the open car, a reinforcing member peculiar to the open car (a cross bar and a connecting portion between the bar and the side panel), a cross It is an object of the present invention to provide a rear body structure of an open car that can avoid interference with a vehicle-mounted member housed in a limited housing space behind the bar.

  In order to achieve the above object, a rear vehicle body structure of an open car according to the present invention includes a pair of left and right side panels constituting a vehicle body side wall, a link bracket attached to each side panel and supporting a link mechanism of an openable roof, In the rear vehicle body structure of an open car comprising a cross bar disposed between the link brackets along the vehicle width direction, both longitudinal ends of the cross bar and a connecting member for connecting the link brackets. The member includes a connection main body portion provided with an interference avoidance recess for preventing the rear wall from being recessed toward the front of the vehicle and avoiding interference with other in-vehicle members, and the rear of the connection main body portion in the vicinity of the interference avoidance recess. The surface wall extends inward in the vehicle width direction and has a superposed protruding plate portion that is superposed on the crossbar, and is superposed at least from the opening edge of the interference avoiding concave portion. Disposed toward the proximal end portion of the plate portion, and is characterized in that the reinforcing section member of predetermined portions are joined is provided on the connecting member.

  According to the present invention, since the crossbar is installed between the side panels that are the side walls of the vehicle body via the link bracket and the connecting member, the existing parts can be used even in an open car in which the roof panel is not fixedly provided. By utilizing this, it is possible to effectively improve the vehicle body rigidity such as torsional rigidity and strength against side collision while suppressing an increase in the number of parts. As described above, when both ends in the longitudinal direction of the crossbar are connected to the side panel via the link bracket and the connecting member, there is a concern about interference between the vehicle-mounted member and the connecting member housed behind the crossbar. According to the present invention, since the rear wall of the connecting main body portion of the connecting member is recessed toward the front of the vehicle and the interference avoiding recess for avoiding interference with other in-vehicle members is provided, the in-vehicle member and the connecting member Can be effectively prevented.

  Here, as described above, even if the interference avoidance recess is provided in the connecting member and the cross-sectional area of the portion where the interference avoidance recess is provided is reduced, according to the present invention, at least the opening edge of the interference avoidance recess Since there is a reinforcing surface member that is overlapped with this connecting member and joined at a predetermined location from the base end portion of the superposed protruding plate portion, the strength of the connecting member itself and the connecting member and the crossbar by the reinforcing surface member are provided. The connection strength between the connection member and the crossbar can be reinforced, and thus the connection strength of the vehicle body can be increased. The rigidity can be maintained as good. In particular, when a load is input from the side surface due to a side collision or the like, the load tends to concentrate on the boundary between the interference avoidance concave portion and the overlapping projecting plate portion. Since the members are disposed, the load resistance can be improved, and the input load can be accurately transmitted to the side panel on the opposite side in the vehicle width direction.

  The connecting member is not limited to being formed separately from the link bracket, but may be formed integrally, and not only a single member but also a plurality of members. It may be constituted by.

  Although the specific configuration of the reinforcing surface member is not particularly limited, the reinforcing surface member extends to a position where the lower end edge thereof corresponds to the lower end edge of the connecting member, and at the lower end edge to the lower surface wall of the connecting member. It is preferable that a lower end extending portion extending forward of the vehicle along the vehicle is provided, and the lower end extending portion is joined to the lower surface wall of the connecting member.

  If comprised in this way, not only the rigidity of a reinforcement surface member will increase by providing a lower end extension part, but since the lower end extension part is joined to the lower surface wall of a connection member, the intensity | strength of a connection member is further improved. Can be made.

  Here, when the connecting member is configured to include a connecting main body portion and a superposed protruding plate portion, an inflection portion in which an outer edge enters inside is formed at the boundary between these three-dimensional shape and the plate-like shape, or in the vicinity of the boundary. However, in the case of further having such an inflection part, it is preferable that the lower end extension part of the reinforcing surface member is disposed in a state of straddling the inflection part. (Claim 3).

  If comprised in this way, it can reinforce using the reinforcement surface member in the inflection part where stress concentrates easily.

  The vehicle-mounted member that avoids interference by the interference avoiding recess is not particularly limited, and may be, for example, a link mechanism supported by a link bracket, an engine disposed in the rear space of the crossbar, or the like. It may be provided to avoid interference with the openable roof supported by the bracket, and in this case, the interference avoidance recess is preferably recessed along the movement locus of the openable roof. .

  With this configuration, it is possible to reliably avoid interference between the openable and closable roof, in particular, the hard openable and closable roof that has a low degree of freedom in storing the roof, and the connecting member, and the concave movement along the roof movement locus can be avoided. Therefore, the strength of the connecting member itself can be ensured as much as possible.

  The superposed protruding plate portion may be merely overlapped with a predetermined portion of the cross bar, but the superposed protruding plate portion is preferably joined to the predetermined portion of the cross bar (Claim 5). .

  If comprised in this way, load will be reliably transmitted also by the superposition | polymerization protrusion board part, the connection strength of a connection member and a crossbar can be raised, and vehicle body rigidity can be improved further.

  Although the specific structure of the superposition | polymerization protrusion board part is not specifically limited, For example, the said superposition protrusion board part is provided with the member support part which protrudes in the vehicle rear side at the front-end | tip part, and supports a predetermined vehicle-mounted member. (Claim 6).

  If comprised in this way, since the superposition | polymerization protrusion board part is joined to the crossbar which is a highly rigid member, the member support part which supports a vehicle-mounted member to a high rigidity member using this superposition | polymerization protrusion board part is provided. It is possible to improve convenience.

  According to the invention having the above-described configuration, the vehicle body rigidity is effectively improved while reliably avoiding interference between the connecting member for indirectly connecting the both ends in the longitudinal direction of the crossbar and the side panel and the other vehicle-mounted member. In addition, there is an advantage that the vehicle body rigidity can be maintained as good by suppressing the decrease in the vehicle body rigidity due to the formation of the interference avoiding recess. In particular, even when a load is input from the side due to a side collision, etc., this input load can be accurately transmitted to the side panel on the opposite side in the vehicle width direction, and the shock is effectively distributed by effectively dispersing the impact. Can get to.

  A preferred embodiment of the present invention will be described with reference to the drawings. Here, a so-called open car having a so-called hard-type openable roof, which is a roadster type open car having a driver seat and a passenger seat, will be described as an example, but the rear vehicle body structure according to the present invention is applied. The possible vehicle body is not limited to this, and can be widely applied to open cars in general regardless of roadster type, Phaeton type, or the like.

  1 is a schematic cross-sectional view showing a rear vehicle body structure of a vehicle according to the present embodiment, and FIG. 2 is a perspective view showing the rear vehicle body structure in a state in which some parts of the vehicle such as a seat and a trim are removed. FIG. 3 is a perspective view when the viewpoint is changed with respect to FIG. 2.

  As shown in FIGS. 1 and 2, a vehicle to which the rear car body structure of the open car is applied has a front floor panel 2 extending in the front-rear direction of the vehicle and a rear end portion of the front floor panel 2 obliquely rearward. The kick-up unit 3 that rises up, the rear floor panel 4 extending rearward from the upper end of the kick-up unit 3, and the kick-up unit 3 and the rear floor panel 4 are disposed on both ends in the vehicle width direction. A pair of left and right side panels 5 constituting the side wall of the vehicle body and a rear end panel 6 extending inward in the vehicle width direction from the rear edge of the side panel 5 are provided in the vicinity of the kick-up portion 3 on the floor panel 2. A pair of left and right sheets 8 are arranged with the floor tunnel 7 interposed therebetween, and a roll bar unit is located at the rear proximity position of these sheets 8. There are disposed along the vehicle width direction. A rear cross member 50 is disposed between the kick-up portion 3 and the rear floor panel 4 along the vehicle width direction.

  A rear space of the roll bar unit 9, that is, a space surrounded by the rear floor panel 4, the side panel 5, and the rear end panel 6 is partitioned into a luggage compartment side and a roof storage portion 11 side by a bulkhead 10 extending in the vehicle width direction. ing.

  As shown by the solid line in FIG. 1, the roof storage unit 11 is configured to be able to store an openable roof 12. The openable roof 12 is configured such that a steel plate panel is divided into a plurality of parts and stored in the roof storage portion 11 so that the upper part of the vehicle compartment can be opened. That is, the openable roof 12 includes a steel plate roof panel 121, and a pillar panel 122 that forms a rear end pillar in a closed state (a roof deployed state in which the upper part of the passenger compartment is closed) and is connected to the rear edge of the roof panel 121. And a rear glass panel (not shown) fitted in an opening provided in the pillar panel 122 in the closed state, and these panels are indicated by arrows in FIG. 1 by the link mechanism 13 (see FIG. 3). And can be opened and closed by being driven to rotate.

  In the retractable roof 12, the roof panel 121 is accommodated in the roof storage portion 11 at the upper rear of the roll bar unit 9 in the retracted state, and the pillar panel 122 is partially accommodated outside the roll bar unit 9 in the vehicle width direction. It is accommodated in the roof storage part 11 in a state. Therefore, the innermost end point A of the pivoting track of the pillar panel 122 moves along the track t1 shown in FIG.

  As the link mechanism 13, a known link mechanism corresponding to a so-called open / close hard roof is used, and details thereof are omitted here. As shown in FIG. 3, the link mechanism 13 is joined to the side panel 5 via a link bracket 14. As shown in FIGS. 2 and 3, the link bracket 14 includes a bracket body 14a joined to the side panel 5 by bolts at a plurality of locations, and a holding portion 14b joined to the bracket body 14a by bolts. The roll bar unit 9 (specifically, the cross bar portion 92) is joined to the holding portion 14b via the connecting member 15. In this embodiment, a case where the connecting member 15 is directly attached to the link bracket 14 will be described. However, another member, for example, a member constituting the link mechanism 13 is interposed between the link bracket 14 and the connecting member 15. It may be the case.

  The roll bar unit 9 is provided to protect the occupant's head when the vehicle rolls over and the like, and to improve the rigidity against the side collision, and is entirely covered with a trim (not shown). Specifically, as shown in FIG. 2, the roll bar unit 9 includes a pair of left and right roll bar bodies 91 and a crossbar portion 92 that is laid between the roll bar bodies 91.

  The roll bar main body 91 is formed symmetrically, and each roll bar main body 91 is disposed behind each sheet 8. Further, as shown in FIG. 4, each roll bar main body 91 has a leg portion 93 whose lower end portion is joined to the upper surface of the rear floor panel 4 by a bolt via a mounting flange portion 91a, and an upper end of the leg portion 93. It is a rigid member that is formed by bending a single steel pipe, including a head protecting portion 94 that extends upward from the edge and is curved in an inverted U shape toward the inner side in the vehicle width direction.

  The leg-shaped portion 93 is designed such that the upper end thereof substantially corresponds to the upper portion of the seat 8 (specifically, the seat back). Further, the leg portion 93 is formed so as to be tilted forward as it goes downward, thereby ensuring a space for the roof storage portion 11. The lower end portion of the inclined portion is supported by the side panel 5 by the support bracket 16. The head protection unit 94 is provided to protect the head of the passenger sitting in the driver's seat or the passenger seat, and is designed to be slightly higher than the upper end of the seat 8 (specifically, the headrest). Yes.

  A crossbar portion 92 is disposed between the leg-shaped portion 93 and the head protecting portion 94 of the roll bar main body 91, and the roll bar main body is inserted in the front-rear direction with the bolt B1. 91 is joined. The other end portion of the head protecting portion 94 is fitted and joined to a predetermined portion of the crossbar portion 92 on the inner side in the vehicle width direction than the joining portion.

  Further, as described above, both ends of the crossbar portion 92 are indirectly supported by the side panel 5 that is the vehicle body side wall by the connecting member 15 and the link bracket 14. Accordingly, the roll bar unit 9 is not only joined at the lower end thereof to the vehicle body via the mounting flange portion 91a, but also at the six-point support type joined to the vehicle body by the link bracket 14 and the support bracket 16. It is structured as a thing.

  Specifically, the crossbar portion 92 includes a front member 92a in which a cross section perpendicular to the longitudinal direction is formed in an open U-shape rearward, and the open portion is closed from the back side of the front member 92a. And a rear member 92b having a closed cross-section together with the front member 92a, and a joining flange portion 92d of the rear member 92b that protrudes rearward from the opening edge of the front member 92a through a stepped portion. Are polymerized and joined by spot welding. The front member 92a is formed such that the front wall at both ends in the longitudinal direction protrudes outward, and is attached to the connecting member 15 by this protruding piece 921 (see FIGS. 4 and 5). A portion indicated by 95 in FIG. 5 is a sandwiching portion of a rear member 92b that sandwiches the roll bar main body 91 together with the front member 92a. The front member 92a, the roll bar main body 91, a back main body member 154 described later, and bonding The bolts B1 are tightened together with the reinforcing plate 20 (see FIG. 7).

  On the other hand, as shown in FIG. 2 to FIG. 4, the connecting member 15 is for connecting the crossbar portion 92 and the link bracket 14 as described above. Curved inward in the direction (see FIG. 6). The rear wall of the connecting member 15 extending inward in the vehicle width direction and in the vicinity of the curved portion is provided with an interference avoiding recess 150 that is recessed toward the front of the vehicle. The interference avoiding recess 150 is for avoiding interference between the connecting member 15 and other vehicle-mounted members. In this embodiment, the interference avoiding recess 150 prevents interference with the pillar panel 122 that moves in accordance with the opening / closing operation of the openable roof 12. It is set to avoid. Accordingly, the interference avoiding recess 150 is formed to be recessed along the movement locus of the pillar panel 122, particularly along the movement locus t1 of the point A in FIG.

  A specific structure of the connecting member 15 will be described with reference to FIGS. 4 is a partially enlarged perspective view showing a part of the roll bar unit from the rear side of the vehicle, FIG. 5 is an enlarged perspective view of the main part showing the main part of FIG. 4 from different viewpoints, and FIG. 6 is a connecting member. And FIG. 7 is a cross-sectional view corresponding to a plan view showing the connecting member and the surrounding constituent members.

  That is, as clearly shown in FIG. 6, the connecting member 15 extends in the front-rear direction of the vehicle, and has a first main body member 151 whose one end (front end) is joined to the holding portion 14 b of the link bracket 14, and the first main body member 151. A curved main body member 152 that is joined to the front surface side of the other end of the vehicle body and curves inward in the vehicle width direction, a second main body member 153 that is joined to the front curved body member 152 and extends in the vehicle width direction, and each of these main body members 151. ˜153 and the crossbar portion 92 are covered with the main body members 151 to 153 and the back main body member 154 joined to the crossbar portion 92.

  The connecting member 15 is not limited to a member constituted by the plurality of members 151 to 154, but is constituted by one member, for example, a member formed by bending one steel pipe. May be.

  The first main body member 151 is formed by slightly bending a flat rectangular steel pipe inward in the vehicle width direction. The curved main body member 152 is formed by being curved along its longitudinal direction, and a joining tongue piece 152a that is superposed on the wall surfaces of the adjacent main body members 151 and 153 is provided at each end in the longitudinal direction (see FIG. 6). . Further, the curved main body member 152 has a steel plate formed in a substantially U shape in a sectional view by press working, and a flange portion (not shown) protruding vertically at the opening edge of the first and second main body members 151. , 152 and is joined to the wall surface of the back main body member 154 by spot welding at the flange portion. That is, the curved main body member 152 is joined to the first main body member 151, the second main body member 153, and the back main body member 154 at predetermined positions.

  The second main body member 153 is formed in a substantially U-shaped cross-sectional view that opens rearward by pressing a steel plate, and is backed by a flange portion (not shown) protruding upward and downward at the opening edge. It is joined to the wall surface of the main body member 154 by spot welding. Further, the second main body member 153 is fastened to the protruding piece 921 of the crossbar portion 92 by a bolt B1.

  The back body member 154 is formed by pressing a steel plate, and is disposed on the back side of each of the body members 151 to 153 and the crossbar portion 92. The back body member 154 is provided with the interference avoiding recess 150. Specifically, as shown in FIGS. 5 to 7, the back main body member 154 includes a shell-like connection main body portion 154 a disposed substantially opposite to the curved main body member 152, and the connection main body portion 154 a. It has a superposed projecting plate portion 154 b that extends from the inner edge in the vehicle width direction along the back surface of the crossbar portion 92 and is superposed on the rear wall of the crossbar portion 92.

  The connection main body portion 154a has a peripheral wall portion 1541 that is curved, and a lower surface wall portion 1542 that extends from the lower end edge of the peripheral wall portion 1541 toward the front of the vehicle along the lower end surfaces of the main body members 151 to 153, The peripheral wall portion 1541 is largely recessed in front of the vehicle, leaving the upper portion and the vehicle width direction outer end portion slightly, thereby forming an interference avoidance recess 150. In the present embodiment, the interference avoiding recess 150 is configured to open in three directions, rearward, downward, and outward in the vehicle width direction, so that interference with the pillar panel 122 can be reliably avoided. Further, as shown in FIG. 6, the interference avoiding recess 150 is mostly formed by a curved surface (curved line) so that excessive stress does not act on one place.

  As shown in FIG. 5, the upper end portion of the peripheral wall portion 1541 is formed in a crank shape, and the rigidity of the connection main body portion 154 a is improved. Further, the above-described overlapping protruding plate portion 154b is connected to the inner end edge of the peripheral wall portion 1541 in the vehicle width direction. On the other hand, the lower surface wall portion 1542 is integrally connected to a lower end flange portion 1543 whose inner end edge in the vehicle width direction extends from the lower end of the base end portion of the overlapping protruding plate portion 154b toward the front of the vehicle. As shown in FIG. 6, an inflection portion 1544 in which the outer edges of the respective portions 1542 and 1543 enter the inner side (the vehicle front side) is formed at the connecting portion between the wall portion 1542 and the lower end flange portion 1543.

  The overlapping protruding plate portion 154b is located near the interference avoiding recess 150 and extends inwardly from the inner edge in the vehicle width direction of the connection main body portion 154a, and its width is the crossbar portion. It is set to a height substantially corresponding to the height of 92 and is configured to overlap the rear wall of the crossbar portion 92. In addition, a bead 1545 for improving the strength of the overlapping protruding plate portion 154b is formed in the central portion of the overlapping protruding plate portion 154b in the width direction (vehicle height direction). Further, as clearly shown in FIG. 5, the overlapping protruding plate portion 154 b is joined to the crossbar portion 92 by the bolt B <b> 1, thereby dispersing the transmission load between the connecting member 15 and the crossbar portion 92. The joint strength is improved.

  Further, a panel support portion 156 (an example of a member support portion of the present invention) that supports the front end portion of the roof panel 121 from below in a state in which the openable roof 12 is stored at the front end portion of the overlapping protruding plate portion 154b. Is provided. The panel support portion 156 is provided at the center of the head protection portion 94 of the roll bar body 91 in the vehicle width direction so as to protrude upward so that the tip end portion is higher than the upper end of the crossbar portion 92. A joint flange 156a is formed which is widened outward and joined to the overlapping protruding plate 154b, and a buffer member 157 such as rubber is screwed to the tip. As shown in FIG. 3, the panel support portion 156 is configured such that the retractable roof 12, specifically, the front end portion of the roof panel 121 is supported by the buffer member 157. Although not shown, the panel support portions 156 are respectively provided on the connecting portions 15 disposed on the left and right sides in the vehicle width direction.

  The connecting member 15 having the above-described configuration is disposed along the connecting member 15 from the opening edge 150a of the interference avoiding recess 150 of the back body member 154 to the base end portion of the overlapping protruding plate portion 154b. A reinforcing surface member 17 to be joined at a plurality of locations is provided. That is, from the opening edge portion 150a of the interference avoiding recess 150 to the base end portion of the overlapping protruding plate portion 154b, in other words, the connecting main body portion 154a formed in a shell shape and the overlapping protruding plate portion 154b formed in a plate shape. The stress is likely to concentrate at the boundary portion due to the structural difference and the interference avoiding recess 150 formed in the vicinity of the boundary portion. Therefore, by reinforcing the boundary portion where the stress is easily concentrated by the reinforcing surface member 17, the strength of the connecting member 15 is improved, and as a result, the joining strength between the connecting member 15 and the crossbar portion 92 is improved.

  The reinforcing surface member 17 is formed by pressing a steel plate having a predetermined shape, and its lower end edge extends to the lower end edge of the connecting member 15. Specifically, the reinforcing surface member 17 is disposed in a state of covering a predetermined region from the opening edge portion 150 a of the interference avoiding recess 150 to the base end portion of the overlapping protruding plate portion 154 b, and the lower end edge is the lower end of the connecting member 15. A reinforcing main body portion 171 formed to extend to a position corresponding to the edge, and a lower end extending portion 172 extending forward of the vehicle along the lower wall of the connecting member 15 at the lower end edge of the reinforcing main body portion 171. The reinforcement main body portion 171 is welded to a predetermined portion of the inner surface of the interference avoiding recess portion 150 and the surface of the overlapping protruding plate portion 154b by welding, and the lower surface extending portion 172 has surfaces of the lower surface wall portion 1542 and the lower end flange portion 1543. Are joined by welding.

  The reinforcing main body 171 is formed along the surface of the connecting member 15 from the opening edge of the interference avoiding recess 150 to the base end of the overlapping protruding plate 154b, and is bent at the opening edge of the interference avoiding recess 150. . On the other hand, the lower end extending portion 172 is configured to be able to cover the inflection portion 1544 of the connecting member 15 and is disposed across the inflection portion 1544 in a bracing manner, thereby improving the strength in the inflection portion 1544. I am letting. And this lower end extension part 172 is welded so that a welding trace may straddle this inflection part 1544 in the state which coat | covered the inflection part 1544, and, thereby, further improves the intensity | strength of the inflection part 1544.

  As shown in FIGS. 2 and 5, the connecting member 15 having the above-described configuration and the crossbar portion 92 are reinforced by the joining reinforcing plate 20 on the front wall of the second main body member 153 by the protruding piece 921 of the front side member 92a. While being joined by the bolt B <b> 2 above, the overlapping projecting plate portion 154 b of the back body member 154 is joined to the rear wall of the crossbar portion 92 by the bolt B <b> 1. In addition, the joining reinforcement plate 20 is a rectangular plate-shaped body made of a steel plate, and is a reinforcing member joined to the front side of the crossbar portion 92 by the bolts B1 and B2.

  According to the rear vehicle body structure of the open car configured as described above, the crossbar portion 92 is indirectly installed between the side panels 5 via the link bracket 14 and the connecting member 15, so that existing parts are used. By doing so, it is possible to effectively improve the vehicle body rigidity even in an open car while suppressing an increase in the number of parts. In particular, when a load is input from the side surface due to a side collision (side collision), the load tends to concentrate on the boundary between the interference avoiding recess 150 and the overlapping protruding plate portion 154b. Since the member 17 is disposed, the load resistance can be improved, and the input load can be accurately transmitted to the side panel 5 on the opposite side in the vehicle width direction. Thereby, an impact can be disperse | distributed appropriately and the buffer effect can be acquired effectively.

  In this case, although there is a concern about interference between the openable roof 12 stored in the roof storage portion 11 and the connecting member 15, in this embodiment, interference with the openable roof 12 on the back side of the connecting member 15 is avoided. Therefore, the interference between the hard roof 12 and the connecting member 15 that are difficult to be accommodated in a relatively compact manner can be reliably avoided, and a limited space (roof storage) is provided. The hard type openable / closable roof 12 can be efficiently accommodated in the portion 11).

  Here, even if the interference avoiding recess 150 is provided in the connecting member 15, according to this embodiment, the reinforcing surface member 17 reinforces from the opening edge portion 150 a of the interference avoiding recess 150 to the proximal end portion of the overlapping protruding plate portion 154 b. Therefore, the strength of the connecting member 15 itself and the connecting strength between the connecting member 15 and the crossbar portion 92 can be reinforced, and the overlapping protrusion plate portion 154b superposed on the crossbar is provided on the connecting member. The connection strength between the connection member and the crossbar can be reinforced, and thereby the vehicle body rigidity can be kept good.

  Moreover, the reinforcing surface member 17 is provided with a lower end extending portion 172, and the lower end extending portion 172 is joined in a state of straddling the inflection portion 1544, so that not only the rigidity of the reinforcing surface member 17 is increased, Since the lower end extending portion 172 is joined to the lower wall of the connecting member, the strength of the connecting member 15 can be further improved, and the bending portion 1544 can be effectively reinforced to further increase the rigidity of the connecting member 15. Is improved.

  In addition, the specific structure of the rear vehicle body structure of the open car of the present invention is not limited to the above embodiment, and can be variously changed. Other embodiments are described below.

  (1) In the above embodiment, the reinforcing surface member 17 is overlapped with the connecting member 15 from the opening edge portion 150a of the interference avoiding recess 150 to the base end portion of the overlapping protruding plate portion 154b. The specific configuration of the surface member 17 is not particularly limited. For example, the reinforcing surface member 17 may be extended in the vehicle width direction, and the inner end edge may be overlapped with the front end portion of the overlapping protruding plate portion 154b, while the outer end edge may be overlapped with the interference avoiding recess 150. It is good also as what is piled up to the bottom face part. In particular, when the reinforcing surface member 17 is extended to the bottom surface portion of the interference avoiding recess portion 150 with respect to the outer edge, the reinforcing surface member 17 can be reinforced from the bottom surface portion to the peripheral wall surface portion of the interference avoiding recess portion 150 where stress concentration easily occurs. The rigidity can be further improved.

  In the above embodiment, the reinforcing surface member 17 is provided with the lower end extending portion 172. However, the lower end extending portion 172 can be omitted as appropriate, and instead of the lower end extending portion 172, Alternatively, in addition to the lower end extending portion 172, the reinforcing main body portion 171 is extended to a position corresponding to the upper end edge of the connecting member 15, and an upper end extending portion extending from the upper end edge along the upper wall surface of the connecting member 15 is provided. It may be a thing.

  (2) The shape of the interference avoidance recess is not limited to that of the above embodiment, and can be appropriately changed to a shape necessary for avoiding interference between the connecting member 15 and the vehicle-mounted member. Even in this case, since the strength of the connecting member 15 from the connecting main body 154a where the interference avoiding recess 150 is formed to the base end of the overlapping protruding plate 154b is concerned, the opening edge of the interference avoiding recess 150 The reinforcing surface member 17 is disposed from the portion to the base end portion of the overlapping protruding plate portion 154b.

  (3) In the above-described embodiment, the member support portion provided on the overlapping protruding plate portion 154b is configured as the panel support portion 156 that supports the roof panel 121 of the openable roof 12, but the object support portion supports Is not limited to the roof panel 121. For example, as shown in FIG. 8, the front end portion of the overlapping protruding plate portion 154b is erected on the vehicle rear side, and the erected portion 1548 is configured to support, for example, the link mechanism 13 of the openable roof 12. It may be. Even if comprised in this way, the predetermined | prescribed vehicle-mounted member (for example, link mechanism 13) can be supported by the crossbar part 92 which is a highly rigid member using the superposition | polymerization protrusion board part 154b, and the convenience is also improved. be able to.

  (4) In the above embodiment, the reinforcing surface member 17 and the joint reinforcing plate 20 are disclosed as reinforcing members, but it goes without saying that other reinforcing members may be provided as appropriate.

It is a schematic sectional drawing which shows the rear vehicle body structure of this embodiment. It is a perspective view which shows a rear part vehicle body structure in the state which removed some components, such as a seat and a trim. It is a perspective view at the time of changing a viewpoint about FIG. It is a partial expansion perspective view which shows a part of roll-bar unit from the vehicle rear side. FIG. 5 is an enlarged perspective view showing a main part of FIG. 4 in an enlarged manner from different viewpoints. It is a bottom view which shows a connection member and the surrounding structural member. It is sectional drawing equivalent to the top view which shows a connection member and its surrounding structural member. It is a perspective view which shows the modification about a member support part.

Explanation of symbols

5 Side panel (body side wall)
DESCRIPTION OF SYMBOLS 9 Roll bar unit 11 Roof storage part 12 Open / close-type roof 13 Link mechanism 14 Link bracket 15 Connection member 17 Reinforcement surface member 121 Roof panel 122 Pillar panel 150 Interference avoidance recessed part 150a Opening edge part 154a Connection main-body part 154b Polymerization protrusion board part 172 Lower end Extension part 1544 Inflection part

Claims (6)

A pair of left and right side panels that constitute the side wall of the vehicle body, a link bracket that is attached to each side panel and supports the link mechanism of the openable roof, a cross bar disposed between the link brackets along the vehicle width direction, In the rear vehicle body structure of the open car provided with both ends in the longitudinal direction of the crossbar and a connecting member for connecting each link bracket,
The connection member includes a connection main body portion provided with an interference avoidance recess for avoiding interference with other in-vehicle members with a rear wall recessed toward the front of the vehicle, and the vicinity of the interference avoidance recess in the connection main body portion. A rear surface wall extending inward in the vehicle width direction and having a superposed protruding plate portion that is superposed on the crossbar;
The rear part of the open car, which is provided at least from the opening edge part of the interference avoiding recess part to the base end part of the overlapping protruding plate part, and is provided with a reinforcing surface member to which a predetermined portion is joined to the connecting member Body structure.   The reinforcing surface member has a lower end extending portion whose lower end edge extends to a position corresponding to the lower end edge of the connecting member and extends forward of the vehicle along the lower surface wall of the connecting member at the lower end edge. 2. The rear body structure of an open car according to claim 1, wherein a lower end extending portion is joined to a lower wall of the connecting member. The connecting member further has a bend in which the outer edge has entered the inner side at the boundary between the connecting main body part and the overlapping protruding plate part or in the vicinity of the boundary,
The rear body structure of the open car according to claim 2, wherein the lower end extending portion of the reinforcing surface member is disposed in a state of straddling the inflection portion.   The interference avoidance recess is provided to avoid interference with an openable / closable roof supported by the link bracket, and is recessed along a movement locus of the openable / closable roof. The rear vehicle body structure according to any one of claims 1 to 3.   The rear vehicle body structure according to any one of claims 1 to 4, wherein the overlapping protruding plate portion is joined to a predetermined portion of the cross bar. 6. The rear vehicle body structure of an open car according to claim 5, wherein said superposed protruding plate portion is provided with a member support portion that protrudes toward the rear side of the vehicle and supports a predetermined vehicle-mounted member at a front end portion thereof.

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