JP2018154166A - Vehicle body side part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body side part structure capable of suppressing deformation of a B pillar and securing a cabin inner capacity more efficiently.SOLUTION: A rear door upper beam 38 having tension intensity in a vehicle cross direction is provided inside of a rear door 8 of a vehicle, and a rear end part of the rear door upper beam is engaged to a rear quarter part 20 of a vehicle body by a rear door lock mechanism 28, and a wheel apron 54 forming a rear wheel house 50 with the engagement part of the rear quarter part 20 to the rear door 8 by the rear door lock mechanism 28 is connected to a vehicle cross direction by the connection member 44. The wheel apron 54 has extension in a vertical direction and a vehicle cross direction, so that, tension intensity received from the rear door upper beam 38 is dispersed, even receiving the tension force from the rear door upper beam 38, the wheel apron 54 is hardly deformed and broken, so that, tension intensity of the rear door upper beam 38 acts efficiently, as B pillar deformation suppression force.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle body side part structure, and more particularly to a vehicle body side part structure that secures a vehicle interior volume against vehicle body deformation caused by a load applied due to a collision from the side of the vehicle.

  A load may inevitably act on the vehicle due to a side collision or the like. In recent years, in many vehicles, a strength member called a door beam is disposed inside the door in order to suppress the deformation of the door caused by such a lateral load. For example, in Patent Document 1 described below, by providing a door beam made of a high-strength steel plate having a specified cross-sectional shape inside the door, excellent drag and energy absorption against lateral loads are ensured.

JP 2010-149841 A

  By the way, in order to secure the vehicle interior volume against the deformation of the vehicle body caused by the load from the side of the vehicle, it is necessary to suppress the deformation of the B pillar, for example. In such a case, it is conceivable that the door beam not only suppresses deformation of the door but also functions to suppress deformation of the B pillar by, for example, engaging with a member in the vehicle front-rear direction of the door. In that case, for example, a configuration is required in which a door beam disposed inside the rear door is engaged with the rear quarter portion, and the tensile strength of the door beam effectively acts as a B pillar deformation suppressing force.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle body side part structure that can suppress the deformation of the B pillar and more effectively secure the vehicle interior volume. is there.

In order to achieve the above object, the vehicle body side structure according to claim 1,
In a vehicle body side structure for resisting a load from the side of a vehicle, a strength member disposed inside the door of the vehicle and having a tensile strength substantially linearly in the vehicle front-rear direction, and a tensile strength of the strength member Engaging means for engaging the door and the wheel housing portion of the vehicle body on a substantially extended line of the direction, an engaging portion of the wheel housing portion with the door by the engaging means, and a wheel house of the wheel housing portion. And a connecting member for connecting the wheel house constituting plate member to be configured in the vehicle front-rear direction.

  According to this configuration, the end of the strength member on the side of the wheel accommodating portion (hereinafter also simply referred to as a wheel side end) is directly or indirectly engaged with the wheel accommodating portion by the engaging means. When a load from one side acts, a tensile force is generated in the strength member. At this time, since the engaging portion with the door in the wheel housing portion is connected in the vehicle front-rear direction by the wheel house constituting plate member and the connecting member constituting the wheel house, the tensile force generated in the strength member by the wheel house constituting plate member Receive. And since this wheel house component plate member has a spread in the vertical direction and the vehicle front-rear direction, the tensile stress received from the strength member is dispersed, and even if it receives the tensile force generated in the strength member, it is difficult to deform or break Therefore, the tensile strength of the strength member effectively acts as a B-pillar deformation suppressing force against the vehicle side load, and as a result, the vehicle interior capacity can be ensured.

  The vehicle body side structure according to claim 2 is the vehicle body side structure according to claim 1, wherein the strength member is disposed inside both doors adjacent to each other in the vehicle front-rear direction via a B pillar. The adjacent side ends of the strength members inside the adjacent doors are engaged with each other via the B pillar.

  According to this configuration, when a vehicle side load is applied, a tensile force acts on both of the strength members inside the adjacent door, and the tensile strength of these strength members serves as a B-pillar deformation suppression force against the vehicle side load. Further, it works effectively, and as a result, the vehicle interior capacity can be more reliably maintained on one side.

  As described above, according to the present invention, when a load from the side of the vehicle acts, a tensile force is generated in the strength member, and the tensile force is received by the wheel house constituting plate member connected in the vehicle front-rear direction by the connecting member. However, since this wheel house constituting plate member has a spread in the vertical direction and the vehicle front-rear direction, the tensile stress received from the strength member is dispersed, and even if it receives the tensile force generated in the strength member, it is difficult to deform or break, Thereby, the tensile strength of the strength member effectively acts as a B-pillar deformation suppressing force against the vehicle side load, and as a result, the vehicle interior capacity can be ensured.

1 is a schematic configuration side view showing a first embodiment of a vehicle to which a vehicle body side part structure of the present invention is applied. It is AA sectional drawing of FIG. It is explanatory drawing of an effect | action of the vehicle body side part structure of FIG. FIG. 5 is a schematic configuration side view showing a second embodiment of a vehicle to which a vehicle body side part structure of the present invention is applied. It is explanatory drawing of an effect | action of the vehicle body side part structure of FIG. It is BB sectional drawing of FIG.

  Hereinafter, embodiments of a vehicle body side part structure of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic side view of a vehicle in which a vehicle body side structure according to the present invention is applied to a rear door as a first embodiment. This vehicle is, for example, a station wagon type passenger vehicle, and a front door (different door) 6 and a rear door (door) 8 are arranged on the left and right sides of the vehicle body. As with known passenger vehicles, an A-pillar (front pillar) 10 is located at the front of the front door 6 and a B-pillar (center pillar) 12 is located between the front door 6 and the rear door 8 at the rear of the rear door 8. C pillars (rear quarter pillars) 14 are provided on the left and right sides of the vehicle body. In general, the upper ends of the pillars 10 to 14 are connected to a roof portion 16 of the vehicle body, and the lower ends are connected to a side sill portion 18 (which may not have a pillar shape).

  These pillars 10 to 14 are generally formed by joining an outer member and an inner member made of a metal plate material, for example, a steel plate, to a hollow closed cross section, and a metal plate material, for example, a reinforcement member made of a steel plate, between them. Sometimes called a stiffening member. For example, the C pillar 14 is configured by inserting a reinforcement C pillar between the C pillar outer formed in the rear quarter panel outer 21 (see FIG. 2) and the C pillar inner formed in the rear quarter panel inner. . Further, below the rear quarter panel inner, for example, as shown in FIG. 2, a rear arch inner 52 constituting the vehicle width direction outer side surface of the rear wheel house 50 and a vehicle width direction inner side surface of the rear wheel house 50 are constituted. A wheel apron 54 is connected. Accordingly, in this case, the C pillar 14 is a part of the rear quarter portion (wheel accommodating portion) 20.

  In this vehicle, as in a general passenger vehicle, the front door 6 is supported by two front door hinges 22 provided between the A pillar 10 and the front door 6 so as to be opened and closed. Further, the front door 6 is maintained in a closed state by a front door lock mechanism 24 provided between the B pillar 12 and the front door 6. Therefore, the front door hinge 22 is an engaging means for the A pillar 10 and the front door 6, and the front door lock mechanism 24 is an engaging means for the B pillar 12 and the front door 6 (when the door is closed). The front door lock mechanism 24 of this embodiment is provided at the same height as the upper front door hinge 22. Similarly, the rear door 8 is supported by two rear door hinges 26 provided between the B pillar 12 and the rear door 8 so as to be opened and closed. Further, the rear door 8 is maintained in a closed state by a rear door lock mechanism 28 provided between the C pillar 14 and the rear door 8. Therefore, the rear door hinge 26 is an engaging means for the B pillar 12 and the rear door 8, and the rear door lock mechanism 28 is an engaging means for the C pillar 14 and the rear door 8 (when the door is closed). The rear door lock mechanism 28 of this embodiment is provided at the same height as the upper rear door hinge 26. In either case, the door hinges 22 and 26 have a well-known hinge structure, and the door lock mechanisms 24 and 28 are well-known lock mechanisms composed of, for example, a latch and a striker.

  In the vehicle of this embodiment, at least one front door beam 36 as a strength member (different strength member) that resists a load from the side of the vehicle is disposed inside the front door 6. The front door beam 36 shown in the figure is arranged with the longitudinal direction of the beam member in the linear direction connecting the upper front door hinge 22 and the front door lock mechanism 24, and the front end portion is coupled to the front end portion of the front door 6. The end is coupled to the rear end of the front door 6. Therefore, the front door beam 36 has a tensile strength in the vehicle front-rear direction, is engaged with the A pillar 10 by the upper front door hinge 22, and is engaged with the B pillar 12 by the front door lock mechanism 24. In other words, by extending the front door beam 36 in the tensile strength direction, the front door 6 is engaged with the A pillar 10 by the upper front door hinge 22 and is engaged with the B pillar 12 by the front door lock mechanism 24. The front door beam 36 is formed of, for example, a high-tensile steel plate as described in Patent Document 1 described above. Further, for example, the structure described in Patent Document 1 described above is also used for coupling the front door beam 36 and a metal plate material constituting the front door 6, for example, a steel plate. The front door beam 36 not only suppresses deformation of the front door 6 with respect to a load from the side of the vehicle, but also, for example, a front member in the vehicle front-rear direction via the A pillar 10, for example, a front fender portion (different wheel Engaging with the housing portion 4, a tensile force is generated in the vehicle longitudinal direction. As a result, as will be described later, the tensile strength of the front door beam 36 effectively acts as a B-pillar deformation suppressing force, and as a result, a vehicle interior volume can be secured.

  In the vehicle of this embodiment, at least one rear door upper beam 38 as a strength member that resists the load from the side of the vehicle is also provided in the rear door 8. The rear door upper beam 38 shown in the drawing is arranged with the longitudinal direction of the beam member in the linear direction connecting the upper rear door hinge 26 and the rear door lock mechanism 28, the front end portion is coupled to the front end portion of the rear door 8, and the rear end The portion is coupled to the rear end portion of the rear door 8. Accordingly, the rear door upper beam 38 has a tensile strength in the vehicle front-rear direction, is engaged with the B pillar 12 by the upper rear door hinge 26, and the C pillar 14, that is, the rear quarter portion (wheel accommodating portion) by the rear door lock mechanism 28. 20 is engaged. In other words, the rear door 8 is engaged with the B pillar 12 by the upper rear door hinge 26 by the extension of the rear door upper beam 38 in the tensile strength direction, and the C pillar 14, that is, the rear quarter is engaged by the rear door lock mechanism (engagement means) 28. Engage with the part 20. The rear door upper beam 38 is formed of, for example, a high-tensile steel plate as described in Patent Document 1 described above. For example, the rear door upper beam 38 and the metal plate material that constitutes the rear door 8, for example, a steel plate are also connected to the rear door upper beam 38. The structure described in Patent Document 1 is used. The rear door upper beam 38 not only suppresses deformation of the rear door 8 with respect to a load from the side of the vehicle, but also engages with, for example, a rear member in the vehicle front-rear direction via, for example, the C pillar 14. Thus, a tensile force is generated in the longitudinal direction of the vehicle. As a result, as will be described later, the tensile strength of the rear door upper beam 38 effectively acts as a B-pillar deformation suppressing force, and as a result, a vehicle interior volume can be secured.

  2 is a cross-sectional view taken along the line AA of FIG. 1, that is, a plan view cut in the horizontal direction in the vicinity of the upper end portion of the rear wheel house 50 (the rear wheel is not shown). For example, the rear arch inner 52 and the wheel apron 54 constituting the rear wheel house 50 are both metal plate members, for example, steel plate members. In this embodiment, the engagement portion of the rear quarter portion 20 with the rear door 8 by the rear door lock mechanism 28, specifically, the front end portion of the C pillar 14 in the vehicle front-rear direction, the wheel apron 54, more specifically the wheel house 50. The front end of the wheel apron 54 in the vehicle front-rear direction is connected to the front-rear direction of the vehicle by a connecting member 44 made of, for example, a steel plate. It is desirable that the two to be connected are connected as linearly as possible in a vehicle plan view and a vehicle side view. For connection, for example, a fixing method such as spot welding is used.

  FIG. 3 is a plan view schematically showing the vehicle body side part structure of this embodiment. For example, as shown in the figure, the front end portion of the front door beam 36 is engaged with the A pillar 10, the rear end portion of the rear door upper beam 38 is engaged with the C pillar 14, that is, the rear quarter portion 20, and When the end and the front end of the rear door upper beam 38 are engaged via the B pillar 12, when a load is applied from the side of the vehicle as shown by the white arrow in the figure, the front door beam 36 and A tensile force is generated in the rear door upper beam 38. In order to secure the vehicle interior volume with respect to the vehicle side load, for example, it is effective to suppress the deformation of the B pillar 12. For this purpose, for example, the tensile strength of the front door beam 36 and the rear door upper beam 38 is effectively used. Works. As is well known, since the tensile strength is a breaking strength in the tensile direction, the vehicle side load is converted into the tensile force of the front door beam 36 and the rear door upper beam 38, and the deformation of the B pillar 12 is deformed by the tensile strength. If it can be suppressed, the vehicle interior volume can be effectively secured.

  In this embodiment, the engaging portion of the rear quarter portion 20 with the rear door 8 by the rear door lock mechanism 28 and the wheel apron 54 constituting the wheel house 50 are connected in the vehicle front-rear direction by the connecting member 44. When a tensile force is generated in the rear door upper beam 38 due to a load from one side, the wheel apron 54 receives the tensile force. Since the wheel apron 54 made of a metal plate member has a spread in the vertical direction and the vehicle longitudinal direction, the tensile stress of the tensile force received from the rear door upper beam 38 is dispersed, and accordingly, the tensile force received from the rear door upper beam 38 is received. However, the wheel apron 54 is not easily deformed or broken. Therefore, the tensile strength of the rear door upper beam 38 effectively acts as a deformation suppressing force of the B pillar 12, and as a result, a vehicle interior volume is secured.

  FIG. 4 is a schematic side view of a vehicle showing a second embodiment of the vehicle body side part structure of the present invention. This figure mainly shows the rear door 8. In this embodiment, there are many parts that are similar to the first embodiment. Therefore, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the vehicle according to this embodiment, three rear door beams 38 to 40 are disposed inside the rear door 8 as strength members that resist loads from the side of the vehicle. These rear door beams 38 to 40 are also formed of a high-tensile steel plate, for example, as described in Patent Document 1 described above, and the rear door beams 38 to 40 and a metal plate material constituting the rear door 8 such as a steel plate are combined. In addition, for example, the structure described in Patent Document 1 described above is used. In this embodiment, as in the first embodiment, the beam member extends in a linear direction connecting the upper rear door hinge 26 and the rear door lock mechanism 28 on the vehicle front-rear direction (= tensile strength direction) extension line of the front door beam 36. A rear door upper beam 38 is disposed in the longitudinal direction of the rear door. Further, in this embodiment, the rear door lower beam 39 is disposed in the vehicle front-rear direction so as to be inclined in the vertical direction so that the rear end side is downward from the upper rear door hinge 26, and the rear door upper beam 38 is rearward. The end portion and the rear end portion of the rear door lower beam 39 are linearly connected by a rear door connecting beam 40.

  Of these, the rear door upper beam 38 has a tensile strength in the longitudinal direction of the vehicle. Therefore, the rear door 8 is engaged with the B pillar 12 by the upper rear door hinge 26 by the extension of the rear door upper beam 38 in the tensile strength direction. The mechanism 28 is engaged with the C pillar 14, that is, the rear quarter portion 20. In this embodiment, the front end portion of the rear door upper beam 38 and the front end portion of the rear door lower beam 39 are connected (coupled) via individual short beam members 42 as shown in FIG. 5, for example. . Since the front end portion of the rear door upper beam 38 is coupled to the front end portion of the rear door 8 at the position of the upper rear door hinge 26, the front end portion of the rear door upper beam 38 and the front end portion of the rear door lower beam 39 are related to the B pillar 12. Are combined. As described above, since the rear end portion of the front door beam 36 is engaged with the B pillar 12 by the front door lock mechanism 24, the front end portion of the rear door upper beam 38 and the front end portion of the rear door lower beam 39 are The pillar 12 is engaged with the rear end of the front door beam 36.

  As described above, since the rear end portion of the rear door upper beam 38 is coupled to the rear end portion of the rear door 8 at the position of the rear door lock mechanism 28, the rear end portion of the rear door upper beam 38 is interposed via the rear door lock mechanism 28. The C pillar 14, that is, the rear quarter portion 20 is engaged. On the other hand, the rear end portion of the rear door lower beam 39 is engaged with the rear quarter portion 20 via a rear door catcher mechanism 30 provided below the C pillar 14 in the rear quarter portion 20. In other words, since the rear door lower beam 39 also has a tensile strength in the vehicle longitudinal direction, the rear door 8 is engaged with the B pillar 12 by the upper rear door hinge 26 by the extension of the rear door lower beam 39 in the tensile strength direction, which will be described later. The rear door catcher mechanism (engaging means) 30 is engaged with the C pillar 14, that is, the rear quarter portion 20. The rear door connecting beam 40 is directly coupled to the rear end portion of the rear door upper beam 38 and the rear end portion of the rear door lower beam 39, for example, as shown in FIG.

  FIG. 5 schematically shows the rear door upper beam 38, the rear door lower beam 39, and the rear door connecting beam 40 in this embodiment. As described above and as indicated by the solid white arrows in FIG. 5, when a load from the side of the vehicle is applied, a tensile force is generated in the rear door upper beam 38, but the front end portion of the rear door lower beam 39 is Is coupled to the front end portion of the rear door upper beam 38, and the rear end portion of the rear door lower beam 39 is engaged with the rear quarter portion 20, so that a tensile force is also generated in the rear door lower beam 39 when a vehicle side load is applied. At this time, since the rear door lower beam 39 is disposed in the up-down direction so that the rear end portion is downward and inclined in the vehicle front-rear direction, when a tensile force is generated, for example, the rear end portion is directed upward. Try to move. However, since the rear door connecting beam 40 is interposed between the rear end portion of the rear door lower beam 39 and the rear end portion of the rear door upper beam 38, a compressive force is generated in the rear door connecting beam 40 (what is sliding contact)? Although it is not limited, it can be regarded as a truss structure), and the displacement at which the rear end portion of the rear door lower beam 39 tries to move upward is restricted.

  Further, since the rear door connecting beam 40 is interposed between the rear end portion of the rear door upper beam 38 and the rear end portion of the rear door lower beam 39, they are separated from each other. If the load from the side of the vehicle is such that the positions of the rear door upper beam 38 and the rear door lower beam 39 are rotated in the vehicle rear view (= vehicle front view), as indicated by the dashed arrows in FIG. Even in this case, since the rear end portion of the rear door upper beam 38 and the rear end portion of the rear door lower beam 39 are separated from each other, displacement of the rear door upper beam 38 and the rear door lower beam 39, particularly the rear door lower beam 39 side, is suppressed. . If the rear door beams 38 to 40 are displaced with respect to such an input, a tensile force is hardly generated in the rear door beams 38 to 40 with respect to the vehicle side load. If no tensile force is generated in the rear door beams 38 to 40, the tensile strength of the rear door beams 38 to 40 does not function effectively as a deformation suppressing force of the B pillar 12. On the other hand, in the vehicle body side structure of this embodiment, the displacement of the rear door upper beam 38 and the rear door lower beam 39 is restricted or suppressed. As a result, when the vehicle side load is applied, the rear door upper beam 38 and the rear door A tensile force is surely generated in the lower beam 39.

  6 is a cross-sectional view taken along the line BB of FIG. 4, that is, a plan view cut in the horizontal direction in the vicinity of the middle portion in the height direction of the rear wheel house 50 (the rear wheel is not shown). A rear door catcher mechanism 30 that engages the rear door 8 with the lower portion of the C pillar 14, that is, the rear quarter portion 20, is disposed in front of the vehicle front-rear direction in this cross section. The rear door catcher mechanism 30 has an engaging claw portion 32 projecting inward in the vehicle width direction from the rear door 8 and the outward direction in the vehicle width so that the engaging claw portion 32 is fitted when the rear door 8 is closed. And an engaging recess 34 that opens. Therefore, when the rear door 8 is closed, the engaging claw 32 is fitted into the engaging recess 34. In this state, for example, when a tensile force in the vehicle front-rear direction is applied to the rear door catcher mechanism 30, the engagement claw 32 is engaged with the engagement recess 34 to restrict movement. Therefore, as will be described later, when a load from the side of the vehicle acts and a tensile force in the vehicle front-rear direction is generated in the rear door lower beam 39, the rear door catcher mechanism 30 moves the rear door lower beam 39 in the vehicle front-rear direction. Be regulated.

  The rear arch inner 52 and the wheel apron 54 constituting the rear wheel house 50 are both metal plate members, for example, steel plate members, as in the first embodiment. However, since the cutting heights are different, each has a different cross-sectional shape from the first embodiment. In this embodiment, the engagement portion of the rear quarter portion 20 with the rear door 8 by the rear door catcher mechanism 30, specifically the front end portion of the C pillar 14 in the vehicle front-rear direction, the wheel apron 54, more specifically the wheel house 50. In the same manner as in the first embodiment, the front end portion of the wheel apron 54 in the vehicle apron 54 is connected in the vehicle front-rear direction by a connecting member 44 made of, for example, a steel plate. It is desirable that the two to be connected are connected as linearly as possible in a vehicle plan view and a vehicle side view. For connection, for example, a fixing method such as spot welding is used.

  In this embodiment, the engagement recess 34 of the rear door catcher mechanism 30 is formed at the front end of the connecting member 44 in the vehicle front-rear direction, and the connecting member 44 is secured to the lower end of the C pillar 14. The engaging recess 34 is fixed to the rear quarter portion 20. Also, the rear door lower beam 39 is disposed relatively outside in the vehicle width direction even inside the rear door 8, and the engaging claw portion 32 and the rear door lower beam 39 projecting inward in the vehicle width direction are rigid. They are connected by a block member 46 made of high metal such as steel.

  In this embodiment, the engagement portion of the rear quarter portion 20 with the rear door 8 by the rear door catcher mechanism 30 and the wheel apron 54 constituting the wheel house 50 are connected in the vehicle front-rear direction by the connecting member 44. When a tensile force is generated in the rear door lower beam 39 by the load from the side, the wheel apron 54 receives the tensile force via the block member 46 having high rigidity. Similar to the first embodiment, the wheel apron 54 formed of a metal plate member has a spread in the vertical direction and the vehicle front-rear direction, so that the tensile stress of the tensile force received from the rear door lower beam 39 is dispersed, Therefore, even if a tensile force is applied from the rear door lower beam 39, the wheel apron 54 is not easily deformed or broken. Therefore, the tensile strength of the rear door lower beam 39 effectively acts as a deformation suppressing force of the B pillar 12, and as a result, the vehicle interior volume is secured.

  As described above, in the vehicle body side structure of this embodiment, the rear door upper beam 38 and the rear door that have a tensile strength linearly in the vehicle front-rear direction in order to secure the vehicle interior volume against the load from the side of the vehicle. The lower beam 39 is disposed inside the rear door 8 of the vehicle, and the rear end portion thereof is engaged with the rear quarter portion 20 of the vehicle body by the rear door lock mechanism 28 and the rear door catcher mechanism 30. Then, the engaging portion of the rear quarter portion 20 to the rear door 8 by the rear door lock mechanism 28 and the rear door catcher mechanism 30 and the wheel apron 54 constituting the rear wheel house 50 are connected in the vehicle front-rear direction by the connecting member 44. Therefore, when a load from the side of the vehicle is applied, a tensile force is generated in the rear door upper beam 38 and the rear door lower beam 39, and the tensile force is received by the wheel apron 54 constituting the rear wheel house 50. Since the wheel apron 54 has a spread in the vertical direction and the vehicle longitudinal direction, the tensile stress received from the rear door upper beam 38 and the rear door lower beam 39 is dispersed, and accordingly, a tensile force is applied from the rear door upper beam 38 and the rear door lower beam 39. Even if received, the wheel apron 54 is not easily deformed or broken. Therefore, the tensile strength of the rear door upper beam 38 and the rear door lower beam 39 acts effectively as a deformation suppressing force of the B pillar 12, and as a result, the vehicle interior volume can be secured.

  Further, since the rear end portion of the front door beam 36 disposed inside the front door 6 and the front end portions of the rear door upper beam 38 and the rear door lower beam 39 are engaged via the B pillar 12, the vehicle side load is reduced. In this case, a tensile force acts not only on the rear door upper beam 38 and the rear door lower beam 39 but also on the front door beam 36, and the tensile strength of these door beams acts more effectively as a B-pillar deformation suppressing force against a vehicle side load. As a result, the vehicle interior capacity can be more reliably maintained on one side.

  In the second embodiment, only the rear door lower beam 39 is connected to the wheel apron 54 constituting the rear wheel house 50, but the rear door upper beam 38 is also combined with the wheel as in the first embodiment. You may connect with the apron 54. FIG. The wheel house constituting plate member constituting the rear wheel house connected to the engaging portion of these rear door beams may be other than the wheel apron.

  In these embodiments, the front door beam 36, the rear door upper beam 38, and the rear door lower beam 39 are engaged via the B pillar 12 by the rear door hinge mechanism 26 and the front door lock mechanism 24. The rear end portion of the metal plate member constituting the front door 6 and the front end portion of the metal plate member constituting the rear door 8 may be directly engaged.

  Further, in this embodiment, the description has been given of connecting the rear door beam disposed inside the rear door to the wheel house constituting plate member constituting the rear wheel house by the connecting member. The present invention can be similarly applied to a front door beam disposed inside the front door. In that case, what is necessary is just to connect the front-end part of a front door beam to the wheel house structure board member which comprises a front wheel house by a connection member, for example.

  It goes without saying that the present invention includes various embodiments not described above. Therefore, the technical scope of the present invention is defined only by the invention-specifying matters described in the scope of claims which is appropriate from the above description.

4 Front fender (wheel housing part)
6 Front door (door)
8 Rear door (door)
12 B pillar 14 C pillar 20 Rear quarter part (wheel housing part)
28 Rear door lock mechanism (engagement means)
30 Rear door catcher mechanism (engagement means)
36 Front door beam (strength member)
38 Rear door upper beam (strength member)
39 Rear door lower beam (strength member)
40 Rear door connecting beam 44 Connecting member 50 Rear wheel house (wheel house)
52 Rear arch inner (wheel house component plate member)
54 Wheel apron (wheel house component plate member)

Claims (2)

In the vehicle body side structure to counter the load from the side of the vehicle,
A strength member disposed inside the door of the vehicle and having a tensile strength substantially linearly in the longitudinal direction of the vehicle;
Engagement means for engaging the door and the wheel housing portion of the vehicle body on a substantially extended line in the tensile strength direction of the strength member;
A connecting member that connects the engaging portion of the wheel accommodating portion with the door by the engaging means and the wheel house constituting plate member constituting the wheel house of the wheel accommodating portion in the vehicle front-rear direction;
A vehicle body side structure characterized by comprising: The strength member is disposed inside both doors adjacent to each other in the vehicle front-rear direction via the B pillar,
The vehicle body side part structure according to claim 1, wherein adjacent side ends of strength members inside the adjacent doors are engaged with each other via the B pillar.

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