JP5585166B2 - Center pillar structure with built-in resin structure - Google Patents

Description

  The present invention relates to a center pillar structure in which a resin structure for reinforcing the center pillar is incorporated in a center pillar positioned between front and rear door openings provided on a side surface of a vehicle body in a vehicle such as an automobile.

  A center pillar located between the front and rear door openings is provided on a side surface of a vehicle body such as an automobile so as to extend in the vertical direction of the vehicle body. This center pillar is generally a center disposed on the outside of the vehicle. The pillar outer and the center pillar inner disposed on the vehicle compartment side are configured as a closed section structure formed in a closed section shape.

  In addition, a center pillar is also known in which a reinforcing member is disposed in a closed cross section formed in a closed cross section so as to increase strength and rigidity. For example, in Patent Document 1, a plurality of reinforcing plates perpendicular to the longitudinal direction of the hollow chamber are arranged in the longitudinal direction of the hollow chamber at predetermined intervals in the hollow chamber of the center pillar, and these plates are connected. There is disclosed a structure in which a resin reinforcing member is attached and a foam is filled between at least one reinforcing plate and a reinforcing plate adjacent to the reinforcing plate.

Japanese Patent Laid-Open No. 10-053156

  However, when a plurality of loads can act on the center pillar, when a resin reinforcing member is integrally disposed and reinforced as described in Patent Document 1, the weight is increased by unnecessary reinforcement. Since this increases, it is desirable to suppress the increase in weight. On the other hand, the center pillar is bent and deformed to the passenger compartment side in order to ensure the safety of the occupant because the load acting on the front door and rear door is transmitted in the case of a side collision and may be bent and deformed to the passenger compartment side. It is demanded to suppress this.

  Therefore, an object of the present invention is to provide a center pillar structure including a resin structure that can efficiently suppress bending deformation of the center pillar while suppressing an increase in weight.

For this reason, the invention according to claim 1 of the present application is located between the front and rear door openings provided on the side surface of the vehicle body, extends in the vertical direction of the vehicle body, and has a closed cross section formed in a closed cross section. A center pillar structure in which a resin structure for reinforcing the center pillar is built in the pillar, and the center pillar constitutes a substantially planar center pillar inner constituting an inner surface of the vehicle body and an outer surface of the vehicle body. A center-pillar outer with a hat-shaped cross section, and formed into a closed cross-section by overlapping and joining both ends of the center pillar inner in the vehicle longitudinal direction and the both ends of the center pillar outer in the vehicle longitudinal direction, A plurality of the resin structures are disposed in the closed cross-sectional portion so as to be spaced apart from each other in the vertical direction of the vehicle body, corresponding to a plurality of loads that can act on the center pillar, respectively. At least one of the structures, the hinge portion of the rear door is attached to the center pillar rotatably supporting the vehicle body vertical direction, et al provided the corresponding position is, the hinge portion is spaced in the vertical direction of the vehicle body distribution The resin structure is provided with two hinge portions provided, and the resin structures provided in the corresponding positions in the vehicle vertical direction are different from the two hinge portions, and the plurality of resin structures are in the vehicle vertical direction. Are connected by two connecting members that extend in the longitudinal direction and are spaced apart from each other in the longitudinal direction of the vehicle body. The two connecting members are connected to a support portion that supports the plurality of resin structures and to the center pillar. And the two connecting members are configured such that one connecting portion of the two connecting members is connected to an end of the center pillar inner on the vehicle body front side. The center pillar outer is sandwiched between and coupled to the front end portion of the vehicle body, and the other connecting portion of the two connecting members is connected to the rear end portion of the center pillar inner body and the center pillar outer portion. It is characterized in that it is coupled to the center pillar by being sandwiched and coupled with an end portion on the vehicle body rear side .

The invention according to claim 2 of the present application is the invention according to claim 1, wherein the center pillar outer is formed in a cross-sectional hat shape including a bottom surface portion, side surface portions on both sides, and flange portions on both sides, The resin structure has a flat plate-like flat plate portion disposed substantially along the bottom surface portion of the center pillar outer, and a rib extending substantially along the side surface portion of the center pillar outer from the flat plate portion, The support portion of the connecting member has a hole portion positioned in the rib of the center pillar outer, and the connecting member is formed of the resin material when the resin structure is molded using the resin material. It is formed integrally with the resin structure by flowing into the holes .

According to the center pillar structure incorporating the resin structure according to claim 1 of the present application, the resin structure is spaced apart in the vertical direction of the vehicle body in the closed cross section corresponding to each of a plurality of loads that can act on the center pillar. A plurality of resin structures are arranged, and at least one of the plurality of resin structures is provided at a position corresponding to a hinge portion that is attached to the center pillar and rotatably supports the rear door in the vertical direction of the vehicle body. As a result, the portion where the load acts on the center pillar including the portion where the load acting on the rear door from the outside of the vehicle at the time of a side collision is transmitted to the center pillar through the hinge portion can be locally reinforced by the resin structure. Compared to the case where the pillar is reinforced over a wider range than necessary, the bending deformation of the center pillar can be efficiently suppressed while suppressing an increase in weight.
The hinge portion includes two hinge portions that are spaced apart from each other in the vertical direction of the vehicle body, and the resin structures provided at the corresponding positions in the vertical direction of the vehicle body are different from the two hinge portions. As a result, it is possible to reinforce the portion where the load acting on the rear door from the outside of the vehicle at the time of a side collision is transmitted to the center pillar through the two hinge portions, respectively, by the resin structure, and to realize the effect more specifically. it can.
Further, the plurality of resin structures are connected by the connecting member, and the connecting member is coupled to the center pillar, so that the plurality of resin structures can be arranged with high positioning accuracy in the closed cross section of the center pillar. At the same time, it can be easily attached and the working efficiency can be improved.

According to the invention of claim 2 of the present application, each of the two connection members including the support part that supports the plurality of resin structures and the connection part that is coupled to the center pillar is the bottom part of the center pillar outer. And a rib that extends substantially along the side surface of the center pillar outer, and the support portion of the connecting member is a hole that is positioned in the rib of the center pillar outer. And the connecting member is formed integrally with the resin structure by flowing the resin material into the hole of the support portion when the resin structure is molded using the resin material. This can be realized more specifically.

1 is a side view of a vehicle body to which a center pillar structure according to an embodiment of the present invention is applied. It is the principal part enlarged view of the vehicle body shown in FIG. 1 which removed the front door and the rear door. It is a perspective view which shows the center pillar of a vehicle body. It is a disassembled perspective view which decomposes | disassembles and shows a center pillar. It is sectional drawing of the center pillar along the Y5-Y5 line | wire in FIG. It is sectional drawing of the center pillar along the Y6-Y6 line in FIG. It is explanatory drawing for demonstrating the simulation for analyzing the bending deformation behavior of a vehicle body frame. It is a perspective view which shows the result of having analyzed the bending deformation behavior of the vehicle body frame by simulation. It is sectional drawing which shows the cross section of the bending part of the vehicle body frame in FIG. It is a graph which shows the relationship between the downward stroke of an indenter, and the reaction force with respect to a load, and the relationship between the downward stroke of an indenter, and energy absorption amount.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, terms that mean a specific direction such as “up”, “down”, “right”, “left” and other terms including those terms are used. In order to facilitate understanding of the referenced invention, the technical scope of the present invention is not limited by the meaning of these terms.

  The inventors of the present application first developed a center pillar structure incorporating a resin structure capable of efficiently suppressing bending deformation of the center pillar while suppressing an increase in weight. Simulation analysis was conducted on the deformation behavior when bending load was applied from outside.

FIG. 7 is an explanatory diagram for explaining a simulation for analyzing the bending deformation behavior of the frame body, FIG. 8 is a perspective view showing a result of simulation analysis of the bending deformation behavior of the frame body, and FIG. It is sectional drawing of the bending part of the frame main body in FIG. In FIG. 8, the amount of deformation of each part of the frame body is represented by shades of color, and the larger the amount of deformation, the darker the color. In FIGS. 8 and 9, the progress of bending deformation of the frame body is represented by (a ), (B), (c), and (d) are shown in this order, and the descending strokes of the indenter shown in FIG. 10 to be described later are S ₀ , S ₁ , S ₂ , and S ₃ .

  In this simulation, the metal frame main body 200 is positioned between the upper surface portion 200a, the lower surface portion 200b, the upper surface portion 200a and the lower surface portion 200b, and between the upper surface portion 200a and the lower surface portion 200b, the corner portions 200d, The side surface portion 200c forming 200e, that is, the right side surface portion 200c between the right end portion of the upper surface portion 200a and the right end portion of the lower surface portion 200b in FIGS. 8 and 9, and the left end portion of the upper surface portion 200a and the lower surface portion 200b. A simulation analysis was performed using a model having a left side surface portion 200c between the left end portion and a closed cross section having a rectangular cross section.

  Specifically, as shown in FIG. 7A, a frame body 200 having a predetermined length X1 is supported by two fixing points 201 separated by a predetermined distance X2 shorter than the length X1, and two frames 200 are supported. The indenter 202 is lowered at a constant speed from above to the central portion P1 in the longitudinal direction of the upper surface portion 200a of the frame body 200 corresponding to the intermediate position of the fixed point 201, and the load is input from the outside through the indenter 202 at the time of a vehicle collision A load F simulating the above was applied to the frame body 200, and the bending deformation behavior of the frame body 200 was examined.

  When a bending load F is applied to the frame body 200 from the outside, as shown in FIG. 7B, the frame body 200 is bent and deformed in a convex shape on the lower side, and the upper surface portion 200a is compressed from both ends in the longitudinal direction. Thus, compressive stress is generated by the force of force, and tensile stress is generated by the force in the tensile direction from both ends in the longitudinal direction at the lower surface portion 200b. Further, in the side surface portion 200c, compressive stress is generated on the upper surface portion 200a side from the neutral shaft 210, and tensile stress is generated on the lower surface portion 200b side from the neutral shaft 210.

  FIG. 10 is a graph showing the relationship between the descending stroke of the indenter and the reaction force against the load, and the relationship between the descending stroke of the indenter and the energy absorption amount. In FIG. 10, the indenter 202 is placed on the upper surface portion 200 a of the frame body 200. The horizontal axis represents the descending stroke from the contact position, the reaction force F ′ against the load F is displayed on the left vertical axis, and the energy absorption amount EA is displayed on the right vertical axis. The energy absorption amount EA is energy that can be absorbed when the frame body 200 is bent and deformed, and is represented by the product of the reaction force F ′ with respect to the load F and the descending stroke of the indenter 202.

As shown in (a) of FIG. 8 and FIG. 9, when downward stroke of the indenter indenter 202 is positioned in contact with the upper surface portion 200a is _{S 0,} the frame body 200, the vertex P2 corners 200d corner It is located substantially vertically above the vertex P3 of the portion 200e. The vertices P2 and P3 represent the vertices of the corner portions 200d and 200e in the cross section having the bent portion when the frame main body 200 is bent, that is, the central portion P1.

  When the indenter 202 is moved downward from this state and a load F is applied to the frame main body 200, the reaction force F ′ against the load F increases as the descending stroke of the indenter 200 increases, and the frame main body 200 is convex downward. The frame body 200 is bent and deformed from the central portion P1 to which the load F is applied by applying a force in the compression direction on the upper surface portion 200a and a force in the tensile direction on the lower surface portion 200b. .

Reaction force F 'is maximized with respect to the load F when downward stroke of the indenter 202 is S _1, as shown in (b) of FIG. 8 and FIG. 9, the frame body 200 is curved in a convex shape in the lower deformation At the same time, the frame body 200 is deformed to the inner side of the frame body 200 formed in a closed cross-section, and along with this deformation, the side surface part 200c adjacent to the upper surface part 200a swells outward in the cross-sectional direction to cause out-of-plane deformation The vertex P2 of the corner portion 200d is inclined outward from the substantially vertical direction with respect to the vertex P3 of the corner portion 200e, and a portion having a large deformation amount is generated in the corner portion 200d as indicated by a deformation portion α in FIG. . Further, the lower surface portion 200b is displaced inward of the frame main body 200 along with this deformation.

  When the descending stroke of the indenter 202 is further increased, the reaction force F ′ with respect to the load F is decreased along with the descending stroke of the indenter 202, and as shown in FIGS. Is further deformed by bending, and the upper surface portion 200a is further deformed inwardly of the frame body 200. With this deformation, the side surface portion 200c further bulges outward in the cross-sectional direction to cause out-of-plane deformation, and the lower surface portion. 200d is further displaced inward of the frame body 200, and the frame body 200 is bent and deformed to buckle.

  From this simulation analysis result, when a bending load is applied to the frame body formed in a closed cross-sectional shape with a rectangular cross section from the outside, bending is first performed along the input direction of the load on the upper surface where the force in the compression direction acts. The inner surface of the frame body is deformed inward, and in accordance with this deformation, the side surface portion adjacent to the upper surface portion swells to the outer side of the frame body to cause out-of-plane deformation and a force in the tensile direction acts. Was displaced inward of the frame body, and it was found that the frame body was bent and deformed and buckled. Further, it has been found that the frame main body is bent and deformed only in a predetermined range including the portion where the load acts, with the portion where the load acts as a starting point of the bending deformation.

  In addition to the simulation analysis described above, an experiment was also conducted on the actual frame body formed in a closed cross-sectional shape with a rectangular cross section to examine the deformation behavior when bending deformation is applied to the frame body from the outside. Although it was conducted, in this experiment, a result almost similar to the simulation analysis result described above was obtained.

  From these results, in the center pillar formed in a closed cross-sectional shape, only a predetermined range in the vertical direction of the vehicle body including a portion in which a load that can be applied to the front door and the rear door from the outside of the vehicle at the time of a side collision is transmitted to the center pillar. By effectively reinforcing, it is considered that the center pillar can be efficiently suppressed from being bent and deformed while suppressing an increase in weight.

Hereinafter, the center pillar structure according to the embodiment of the present invention will be described.
1 is a side view of a vehicle body to which a center pillar structure according to an embodiment of the present invention is applied, FIG. 2 is an enlarged view of a main part of the vehicle body shown in FIG. 1 with a front door and a rear door removed, and FIG. 4 is an exploded perspective view showing the center pillar in an exploded manner, FIG. 5 is a cross-sectional view of the center pillar taken along line Y5-Y5 in FIG. 3, and FIG. 6 is a view showing Y6 in FIG. It is sectional drawing of the center pillar along the -Y6 line.

  As shown in FIG. 1, a vehicle body 1 is a vehicle body of a four-door type passenger car, and a vehicle body side surface portion 2 constituting a side surface of the vehicle body 1 includes a roof side rail 10 extending in the vehicle body front-rear direction at the vehicle body upper portion, and a vehicle body lower portion. The center pillar 20 includes a side pillar 5 extending in the longitudinal direction of the vehicle body and a center pillar 20 extending in the vertical direction of the vehicle body and having an upper end coupled to the roof side rail 10 and a lower end coupled to the side sill 5. It is located between the front and rear door openings 3 and 4 provided below.

  The vehicle body side portion 2 also includes side doors 30 and 40 that cover the door openings 3 and 4 provided below the roof side rail 10 so as to be openable and closable, specifically, the front door that covers the door opening 3 on the front side of the vehicle body. A rear door 40 is provided to cover the door 30 and the door opening 4 on the vehicle body rear side. In the present embodiment, the front door 30 and the rear door 40 are respectively disposed so as to overlap the center pillar 20 in a side view of the vehicle body, and the end of the front door 30 on the vehicle body rear side overlaps the center pillar 20. The rear door 40 is disposed such that the end of the rear door 40 on the front side of the vehicle body overlaps the center pillar 20.

  Each of the front door 30 and the rear door 40 includes door bodies 31 and 41, window glasses 32 and 42, and door sashes 33 and 43 that guide the raising and lowering of the window glasses 32 and 42 and hold the window glasses 32 and 42, Ends of the door body 31 of the front door 30 and the door sash 33 on the vehicle body rear side are arranged so as to overlap the center pillar 20, and the door body 41 of the rear door 40 and the end of the door sash 43 on the vehicle body front side are connected to the center pillar 20. It arrange | positions so that it may overlap.

  The front door 30 also includes a hinge portion 37 that rotatably supports the front door 30 on the front side of the vehicle body. The hinge part 37 includes two hinge parts 37a and 37b that are spaced apart from each other in the vertical direction of the vehicle body, that is, an upper hinge part 37a on the vehicle body upper side and a lower hinge part 37b on the vehicle body lower side, and the hinge parts 37a and 37b are The front side of the vehicle body of the front door 30 is connected to the front pillar 6 of the vehicle body 1 to support the front door 30 and the front door 30 can be rotated with respect to the vehicle body 1 in the vehicle width direction. ing.

  On the other hand, on the rear side of the vehicle body of the front door 30, a latch 38 is provided as a locking means for restricting the opening and closing of the front door 30, and the center pillar 20 is connected to the front door 30 corresponding to the latch 38. A striker 39 that is detachably locked with respect to 1 is provided. When the latch 38 of the front door 30 is engaged with the striker 39, the front door 30 is locked with respect to the vehicle body 1.

  Similarly, the rear door 40 includes a hinge portion 47 that rotatably supports the rear door 40 on the front side of the vehicle body. The hinge portion 47 includes two hinge portions 47a that are spaced apart from each other in the vertical direction of the vehicle body. 47b, that is, an upper hinge portion 47a on the upper side of the vehicle body and a lower hinge portion 47b on the lower side of the vehicle body. The hinge portions 47a and 47b each connect the vehicle body front side of the rear door 40 to the center pillar 20 of the vehicle body 1 and the rear door 40. The rear door 40 can be rotated in the vehicle width direction with respect to the vehicle body 1.

  Further, a latch 48 as a lock means for restricting the opening and closing of the rear door 40 is provided on the rear side of the rear door 40, and the rear door 40 is attached to the vehicle body 1 in the rear wheel house 7 corresponding to the latch 48. On the other hand, a striker 49 that is detachably engaged is provided, and the rear door 40 is locked to the vehicle body 1 by the latch 48 of the rear door 40 engaging with the striker 49.

  Each of the front door 30 and the rear door 40 includes impact bars 35 and 45 that extend in the longitudinal direction of the vehicle body to suppress an impact on the occupant in the case of a side collision. 41 is disposed in a space formed between the door inner panel and the door outer panel of the doors 30 and 40 at a substantially central portion in the vehicle body vertical direction, and is fixed to the door inner panel or the door outer panel.

  The impact bar 35 provided on the front door 30 extends so as to incline downward toward the rear side of the vehicle body, so that the front end portion 35a overlaps the front pillar 6 in a side view of the vehicle body with the front door 30 closed. The rear end portion 35 b is provided so as to overlap the center pillar 20. On the other hand, the impact bar 45 provided on the rear door 40 extends in a substantially horizontal direction, and is provided such that its front end 45a overlaps the center pillar 20 in a side view of the vehicle body with the rear door 40 closed, and its rear end 45b. Is provided so as to overlap the rear wheel house 7.

  As described above, the center pillar 20 is provided with the striker 39 for releasably locking the front door 30 and the upper hinge portion 47a for rotatably supporting the rear door 40 at a substantially central portion in the vertical direction of the vehicle body. A lower hinge portion 47b that rotatably supports the rear door 40 is attached to the lower side of the vehicle body in the vertical direction.

  Further, the center pillar 20 is provided so that the front end portion 45a of the impact bar 45 provided on the rear door 40 overlaps with a substantially central portion in the vertical direction of the vehicle body when the front door 30 and the rear door 40 are closed in a side view of the vehicle body. The rear end portion 35b of the impact bar 35 provided on the front door 30 is provided so as to overlap the lower side in the vertical direction of the vehicle body.

  In the present embodiment, the center pillar 20 incorporates resin structures 50 and 60 which are resin reinforcing members for reinforcing the center pillar 20. When a load acts on the front door 30 and the rear door 40 from the outside of the vehicle during a side collision, the striker 39, the rear end portion 35b of the impact bar 35, the upper hinge portion 47a, the lower hinge portion 47b, and the front end portion 45a of the impact bar 45 are applied to the center pillar 20. However, the resin structures 50 and 60 are provided at corresponding positions in the vertical direction of the vehicle body corresponding to portions where these loads are applied. The resin structures 50 and 60 are also provided at positions corresponding to a hole provided in the center pillar 20 described later and the vertical direction of the vehicle body.

  The center pillar 20 includes a substantially planar center pillar inner 21 that constitutes a part of the inner surface of the vehicle body 1, a part of the outer surface of the vehicle body 1, and includes a bottom surface portion 22a, a side surface portion 22b, and a flange portion 22c. A center-pillar outer 22 having a hat-shaped cross section, and disposed substantially along the center-pillar outer 22 between the center-pillar inner 21 and the center-pillar outer 22, and includes a bottom surface portion 23a, a side surface portion 23b, and a flange portion 23c. A center pillar rain 23 having a hat-shaped cross section is provided, and the flange portion 23c of the center pillar rain 23 and the flange portion 22c of the center pillar outer 22 are both overlapped and joined to both end portions 21a of the center pillar inner 21. Thereby, it is formed in a closed cross-sectional shape having a substantially rectangular cross section.

  Thus, the center pillar 20 has the closed cross-section portion 25 formed in a closed cross-section by the center pillar inner 21 and the center pillar outer 22. Further, the closed cross-section portion 25 is divided into the vehicle outer side and the vehicle compartment side by the center pillar rain 23, so that the closed cross-section portion 25 a formed by the center pillar rain 21 and the center pillar outer 23, And a closed cross-sectional portion 25 b formed by the center pillar inner 21. In the vehicle body 1, the center pillar rain 23 is disposed substantially along the center pillar outer 22, and the closed cross-section portion 25 b is formed in a substantially rectangular shape in cross section.

  Further, the center pillar 20 has holes 22d and 22e through which harnesses (not shown) for energizing the rear door 40 are inserted, holes 22f for receiving seat belt retractors (not shown), and a side collision. A hole 23d for adjusting the strength of bending deformation is provided. Specifically, holes 22d and 22e are formed in a substantially central part of the center pillar inner 21 in the vertical direction of the vehicle body, and a hole 22f is formed in the lower side of the center pillar inner 21 in the vertical direction of the vehicle body. A hole 23d is formed on the lower side of the vehicle body in the vertical direction. The center pillar inner 21, the center pillar outer 22, and the center pillar rain 23 are each formed by pressing a metal plate material such as a steel plate.

  On the other hand, the resin structures 50 and 60 are obtained by molding a resin material by injection molding or the like, and have a predetermined length in the vertical direction of the vehicle body and are disposed in the closed cross-section portion 25b. The resin structure 50 is disposed at a substantially central portion of the center pillar 20 in the vertical direction of the vehicle body, and the resin structure 60 is disposed on the lower side of the center pillar 20 in the vertical direction of the vehicle body.

  The resin structure 50 is arranged in a lattice shape, which is a flat plate portion 51 formed in a substantially rectangular shape according to the shape of the bottom surface portion 23a of the center pillar rain 23, and extends from the flat plate portion 51 in a substantially right angle direction. A flat plate portion 51 is provided substantially along the bottom surface portion 23 of the center pillar rain 23, and the rib 52 extends toward the vehicle interior side toward the center pillar inner 21. Is provided.

  The ribs 52 arranged in a lattice shape have a plurality of vertical ribs 52a extending in the vehicle width direction substantially parallel to the side surface portion 23b of the center pillar rain 23, and a plurality of horizontal ribs 52b extending in the vehicle body longitudinal direction. In the rib portion 53, a plurality of vertical ribs 52a and a plurality of horizontal ribs 52b are provided in parallel, and the vertical ribs 52a and the horizontal ribs 52 are coupled to each other at a right angle. A rectangular opening 54 that opens in a direction toward the inner 21 is formed.

  Further, the rib portion 53 is formed such that the length of the rib 52 is short and concavely curved from the end of the center pillar 20 in the longitudinal direction of the vehicle body toward the center of the center pillar 20 in the longitudinal direction of the vehicle body. The strength of the center pillar 20 increases as it approaches the end of the center pillar 20 in the longitudinal direction of the vehicle body.

  The resin structure 50 configured as described above is attached to the center pillar 20 by two connecting members 70 that connect the two resin structures 50 and 60. The connecting member 70 includes a substantially flat support portion 70a and a connecting portion 70b that are joined at a substantially right angle, and has a substantially L-shaped cross section. The support member 70 a of the connecting member 70 is provided with a plurality of anchor hole portions 70 c that are spaced apart from each other in the longitudinal direction of the connecting member 70. The two connecting members 70 are not limited to this, but are formed by pressing a metal plate material such as a steel plate.

  In this embodiment, the resin structure 50 is molded at the same time as the resin structure 60, and the resin member 50 is inserted in a state where the connecting member 70 is inserted into a predetermined position of a mold (not shown) for molding the resin structures 50 and 60. Molded by casting material. As a result, the resin structure 50 has the vertical ribs 53 positioned on the side surface portion 23b side of the center pillar rain 23 integrally formed with the support portion 70a in a predetermined positional relationship with the resin structure 60. It is connected with the resin structure 60. Thereafter, the resin structure 50 is coupled with the resin structure 60 such that the connecting portion 70b of the connecting member 70 is sandwiched between the end portion 21a of the center pillar inner 21 and the flange portion 23c of the center pillar rain 23, It is arrange | positioned in the predetermined position in the closed cross-section part 25b. In addition, since the resin material flows into the anchor hole portion 70c of the connecting member 70 at the time of molding, the connecting member 70 can be prevented from coming off from the resin structures 50 and 60.

  As a result, the resin structure 50 is disposed at a substantially central portion of the center pillar 20 in the vertical direction of the vehicle body within the closed cross-section 25b of the center pillar 20, and includes the upper hinge 47a, the striker 39, and the front end portion 45a of the impact bar 45. It is provided in a predetermined range in the vertical direction, and is provided at a position corresponding to the striker 39, the upper hinge 47a and the front end portion 45a of the impact bar 45 in the vertical direction of the vehicle body. The resin structure 50 is disposed in the vicinity of the holes 22d and 22e provided in the center pillar inner 20, and is provided at a position corresponding to the holes 22d and 22e provided in the center pillar inner 20 in the vertical direction of the vehicle body. .

  Similarly, the resin structure 60 includes a flat plate portion 61 formed in a substantially rectangular shape according to the shape of the bottom surface portion 23 a of the center pillar rain 23, and a substantially right angle direction from the flat plate portion 61. And a rib portion 63 composed of ribs 62 arranged in a grid pattern. The flat plate portion 61 is disposed substantially along the bottom surface portion 23 of the center pillar rain 23, and the rib 62 faces the center pillar inner 21. It is provided to extend toward the passenger compartment.

  The ribs 62 arranged in a lattice shape also have a plurality of vertical ribs 62a extending in the vehicle width direction substantially parallel to the side surface portion 23b of the center pillar rain 23, and a plurality of horizontal ribs 62b extending in the longitudinal direction of the vehicle body. In the rib portion 63, a plurality of vertical ribs 62a and a plurality of horizontal ribs 62b are provided in parallel, and the vertical ribs 62a and the horizontal ribs 62 are coupled at right angles to each other. A rectangular opening 64 that opens in a direction toward the inner 21 is formed.

  Also in the rib portion 63, the length of the rib 62 is short and curved in a concave shape from the vehicle body front-rear direction end side of the center pillar 20 toward the vehicle body front-rear direction center side of the center pillar 20. The strength of the center pillar 20 increases as it approaches the end of the center pillar 20 in the vehicle longitudinal direction.

  As described above, the resin structure 60 configured in this way is molded at the same time as the resin structure 50 in a predetermined positional relationship, and the vertical rib 63 positioned on the side surface portion 23b side of the center pillar rain 23 includes the connecting portion. 70a is integrally formed, attached to the center pillar 20 in a state of being connected to the resin structure 50 by the connecting member 70, and disposed at a predetermined position in the closed cross section 25b. In this embodiment, the resin structures 50 and 60 are simultaneously molded in a state where the connecting member 70 is inserted into the molding die. However, after the resin structures 50 and 60 are molded, the center pillar rain 23 The longitudinal ribs 53 and 63 positioned on the side surface portion 23 b side may be coupled to the support portion 70 a using an adhesive or the like, and the resin structures 50 and 60 may be coupled by the coupling member 70.

  As a result, the resin structure 60 is disposed on the lower side of the center pillar 20 in the vertical direction of the vehicle body within the closed cross-sectional portion 25b of the center pillar 20, and includes the lower hinge portion 47b and the rear end portion 35b of the impact bar 35. It is provided in a predetermined range in the direction, and is provided at a position corresponding to the lower hinge portion 47b and the rear end portion 35b of the impact bar 35 in the vertical direction of the vehicle body. Further, the resin structure 60 is disposed in the vicinity of the holes 22f and 23d provided in the center pillar inner 20, and is provided at a position corresponding to the holes 22f and 23d provided in the center pillar inner 20 in the vertical direction of the vehicle body. .

  In this way, in the present embodiment, in the center pillar structure in which the resin structures 50 and 60 are built in the center pillar 20 having the closed cross section 25b, the resin structures 50 and 60 can act on the center pillar 20. A plurality of resin structures 50 and 60 are disposed in the closed cross-section 25b so as to be spaced apart from each other in the vertical direction of the vehicle body corresponding to the load of each, and at least one of the plurality of resin structures 50 and 60 is attached to the center pillar 20 and rotates the rear door 40. The hinge portion 47 is supported at a position corresponding to the vertical direction of the vehicle body. As a result, the portion where the load acts on the center pillar 20 including the portion where the load acting on the rear door 40 from the outside of the vehicle is transmitted to the center pillar 20 through the hinge portion 47 at the time of a side collision is locally formed by the resin structures 50 and 60. As compared with the case where the center pillar 20 is reinforced over a wider range than necessary, the bending deformation of the center pillar 20 can be efficiently suppressed while suppressing an increase in weight.

  The hinge portion 47 includes two hinge portions 47a and 47b that are spaced apart from each other in the vertical direction of the vehicle body. The resin structure is provided at a position corresponding to each of the two hinge portions 47a and 47b in the vertical direction of the vehicle body. Since the resin structures 50 and 60 are different from each other, portions where the load acting on the rear door 40 from the outside of the vehicle in a side collision is transmitted to the center pillar 20 through the two hinge portions 47a and 47b are respectively resin structures 50 and 60. The effect can be realized more specifically.

  The resin structure 50 is also provided at a position corresponding to the striker 39 and the front end 45a of the impact bar 45 in the vertical direction of the vehicle body, so that a load acting on the front door 30 from the outside of the vehicle through the striker 39 at the time of a side collision. The portion transmitted to the center pillar 20 and the portion transmitted to the center pillar 20 through the impact bar 45 of the rear door 40 can be effectively reinforced. Furthermore, since the resin structure 50 is provided at positions corresponding to the holes 22d and 22e provided in the center pillar 20 in the vertical direction of the vehicle body, the hole provided in the center pillar 20 that is easily bent and deformed during a side collision. The vicinity of the portions 22d and 22e can be effectively reinforced.

  The resin structure 60 is also provided at a position corresponding to the rear end portion 35b of the impact bar 35 in the vertical direction of the vehicle body, and a load acting on the front door 30 from the outside of the vehicle at the time of a side collision is centered through the impact bar 35 of the front door 30. The portion transmitted to the pillar 20 can be effectively reinforced. Further, the resin structure 60 is provided at a position corresponding to the vertical direction of the vehicle body with the holes 22f and 23d provided in the center pillar 20, and the hole 22f provided in the center pillar 20 that is easily bent and deformed in a side collision. The vicinity of 23d can be effectively reinforced.

  In the present embodiment, the resin structures 50, 60 are connected by the connecting member 70, and the connecting member 70 is coupled to the center pillar 20, whereby the resin structure 50, 60 can be disposed with high positioning accuracy, can be easily attached, and work efficiency can be improved.

  In the present embodiment, the resin structures 50 and 60 include flat plate portions 51 and 61 disposed substantially along the bottom surface portion 23a of the center pillar rain 23 located on the vehicle exterior side of the center pillar 20; 61, ribs 52 and 62 extending toward the center pillar inner 21 located on the side of the center pillar 20 from the passenger compartment side. When the load acts on the center pillar 20 from the side of the passenger compartment, 61 can suppress the inward bending deformation of the center pillar 20 that may occur in the initial stage of bending deformation of the center pillar 20, and the ribs 52 and 53 can make the closed cross-section portion 25 b strong against compression. The bending deformation of the center pillar 20 can be effectively suppressed.

  In the present embodiment, the center pillar 20 is provided with the two resin structures 50 and 60 spaced apart from each other in the vertical direction of the vehicle body. However, a resin structure configured in the same manner as the resin structures 50 and 60 is used. Further, the belt lines 36 and 46 forming the lower edges of the window glasses 32 and 42 disposed on the doors 30 and 40 on the upper side of the vehicle body of the resin structure 50 may be provided at positions corresponding to the vertical direction of the vehicle body. Is possible. In such a case, it is possible to effectively reinforce a portion in which a load acting on the doors 30 and 40 from the outside of the vehicle in a side collision is transmitted to the center pillar 20 through the upper ends of the doors 30 and 40.

  As described above, in the center pillar structure according to the present embodiment, one resin structure 50 includes the upper hinge portion 47a, the striker 39, the front end portion 45a of the impact bar 45, and the holes 22d and 22e provided in the center pillar 20. And a plurality of resin structures corresponding to the holes 22d and 22e provided in the center pillar 20 and the upper hinge portion 47a, the striker 39, the front end portion 45a of the impact bar 45, and the center pillar 20. May be provided.

  Also for the resin structure 60, one resin structure is provided so as to correspond to the lower hinge portion 47b, the rear end portion 35b of the impact bar 35, and the holes 22f and 23d provided in the center pillar 20 in the vertical direction of the vehicle body. However, you may make it provide the some resin structure according to the holes 22f and 23d provided in the lower hinge part 47b, the rear-end part 35b of the impact bar 35, and the center pillar 20. FIG.

  The plurality of resin structures disposed on the center pillar 20 are center pillars such that the resin structure 50 is provided corresponding to the upper hinge portion 47a, the striker 39, and the front end portion 45a of the impact bar 45. It is also possible to provide corresponding to a plurality of loads that can act on 20.

  Thus, in the present embodiment, a plurality of resin structures are disposed in the closed cross-section portion 25b so as to be spaced apart in the vertical direction of the vehicle body corresponding to a plurality of loads that can act on the center pillar 20 in a side collision, At least one of the plurality of resin structures is provided at a position corresponding to a hinge portion 47 that is attached to the center pillar 20 and rotatably supports the rear door 40, and the vertical direction of the vehicle body, and one of the plurality of resin structures is The striker 39, the rear end 35b of the impact bar 35, the front end 45a of the impact bar 45, the belt lines 36 and 46, and at least one of the holes 22d, 22e, 22f and 23d provided in the center pillar 20 in the vertical direction of the vehicle body. It is provided at the corresponding position. The plurality of resin structures are connected by a connecting member 70, and the connecting member 70 is coupled to the center pillar 20 so as to be disposed in the closed cross section 25 b.

  In the present embodiment, the center pillar rain 23 is disposed substantially along the center pillar outer 22, and the resin structures 50 and 60 are formed in the closed cross-section portion 25 b formed by the center pillar rain 23 and the center pillar inner 21. However, depending on the shape of the center pillar 20, the resin structures 50 and 60 may be disposed in the closed cross-section portion 25 a formed by the center pillar rain 23 and the center pillar outer 22. Good. Further, in the center pillar 20 that does not include the center pillar rain 23, the resin structures 50 and 60 may be disposed in the closed cross section 25 formed by the center pillar inner 21 and the center pillar outer 22. .

  As described above, the present invention is not limited to the illustrated embodiments, and it goes without saying that various improvements and design changes can be made without departing from the gist of the present invention.

  The present invention can provide a center pillar structure including a resin structure that can efficiently suppress bending deformation of the center pillar while suppressing an increase in weight. For example, a vehicle body of a four-door type passenger car can be provided. It can be used for a center pillar.

2 Car body side face 3, 4 Door opening 20 Center pillar 22d, 22e, 22f, 23d Hole 25, 25a, 25b Closed cross-section 30 Front door 32, 42 Wind glass 35, 45 Impact bar 36, 46 Belt line 39 Striker 40 Rear door 47, 47a, 47b Hinge part 50, 60 Resin structure 70 Connecting member

Claims (2)

Resin structure for reinforcing the center pillar to a center pillar having a closed cross section formed in a closed cross section and positioned between the front and rear door openings provided on the side surface of the vehicle body and extending in the vertical direction of the vehicle body A center pillar structure with a built-in body,
The center pillar includes a substantially planar center pillar inner that constitutes the inner surface of the vehicle body, and a center pillar outer that has a cross-sectional hat shape that constitutes the outer surface of the vehicle body. Formed in a closed cross-sectional shape by overlapping and joining both ends of the center pillar outer in the longitudinal direction of the vehicle body,
A plurality of the resin structures are disposed in the closed cross section so as to be separated from each other in the vertical direction of the vehicle body corresponding to a plurality of loads that can act on the center pillar,
Wherein at least one of the plurality of resin structures, the rear door is attached to the center pillar pivotally corresponding provided at a position these supporting hinge portion for the vehicle vertical direction and,
The hinge portion includes two hinge portions that are spaced apart from each other in the vertical direction of the vehicle body, and the resin structures provided at positions corresponding to the two hinge portions in the vertical direction of the vehicle body are different resin structures. Yes,
The plurality of resin structures are coupled by two coupling members that extend in the vertical direction of the vehicle body and are spaced apart from each other in the vehicle longitudinal direction.
Each of the two connecting members includes a support portion that supports the plurality of resin structures and a connecting portion that is coupled to the center pillar, and is integrally formed with the resin structure.
The two connecting members are coupled such that one connecting portion of the two connecting members is sandwiched between an end of the center pillar inner on the vehicle body front side and an end of the center pillar outer on the vehicle body front side. And the other connecting portion of the two connecting members is sandwiched and coupled between an end portion of the center pillar inner on the vehicle body rear side and an end portion of the center pillar outer on the vehicle body rear side. Coupled to the pillar,
A vehicle frame structure incorporating a resin structure. The center pillar outer is formed in a cross-sectional hat shape including a bottom surface portion, side surface portions on both sides, and flange portions on both sides,
The resin structure has a flat plate-like flat plate portion disposed substantially along the bottom surface portion of the center pillar outer, and a rib extending substantially along the side surface portion of the center pillar outer from the flat plate portion,
The support portion of the connecting member has a hole portion positioned in the rib of the center pillar outer,
The connecting member is formed integrally with the resin structure by flowing the resin material into the hole of the support portion when the resin structure is molded using a resin material.
A vehicle frame structure incorporating the resin structure according to claim 1.