JP2018161993A - Vehicle body side part structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body side part structure which can secure a volume in a cabin more effectively by suppressing deformation of a B-pillar.SOLUTION: For example, front end parts of an upper beam 38 and a lower beam 39 arranged in a rear door 8 are connected by a connecting beam 40 extended in a vertical direction. The connecting beam 40 is protruded from a cabin side surface of the rear door 8 to a b-pillar 12 side. A groove-like recessed part 44 in which the connecting beam 40 is fitted, and a rib-like protrusion 46 which protrudes to an outer side in a vehicle width direction behind it are formed on the B-pillar 12. Therefore, when the door is closed, the connecting beam 40 fits in the groove-like recessed part 44 and the rib-like protrusion 46 engages with the connecting beam 40 behind it to restrict backward movement of the upper beam 38 and the lower beam 39. Thereby, tensile strength of the upper beam 38 and the lower beam 39 effectively act as B-pillar deformation suppressing force when a load is applied on a vehicle side part.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 the vehicle body side structure for resisting a load from the side of the vehicle, at least one strength member that is disposed inside the door of the vehicle and has a tensile strength substantially linearly in the longitudinal direction of the vehicle, A strength member engaging structure for engaging the B pillar side end portion of the strength member with the B pillar when the door is closed in order to restrict movement of the strength member in the vehicle front-rear direction away from the B pillar. It is characterized by having.

  According to this configuration, the B pillar side end portion of the strength member is engaged with the B pillar by the strength member engaging structure, so that a load from the side of the vehicle acts, and the strength member inside the door acts on the strength member in the vehicle longitudinal direction. Even if a tensile force is generated, the movement of the strength member in the vehicle front-rear direction in the direction away from the B pillar is restricted, and the B pillar side end of the strength member continues to be engaged with the B pillar. 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 part structure according to claim 2 is the vehicle body side part structure according to claim 1, wherein the strength member engaging structure is located at the position of the B pillar so as to protrude from the side surface of the passenger compartment. A door-side engagement means for engaging the B-pillar side end of the strength member with the B-pillar, and a vehicle longitudinal direction from a portion of the B-pillar where the door-side engagement means is accommodated And an engaging means restricting portion that protrudes outward in the vehicle width direction and restricts movement of the door side engaging means away from the B pillar in the vehicle front-rear direction. And

  According to this configuration, the movement of the door side engaging means projecting inward in the vehicle width direction from the door is restricted by the engaging means restricting portion projecting outward in the vehicle width direction from the B pillar. Is done. Therefore, even when a load from the side of the vehicle acts and a tensile force in the vehicle longitudinal direction is generated on the strength member inside the door, the movement of the strength member in the vehicle longitudinal direction is restricted by the door side engagement means and the engagement means restriction. Directly or indirectly regulated by the portion, the B-pillar side end of the strength member continues to be engaged with the B-pillar. 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 part structure according to claim 3 is the vehicle body side part structure according to claim 2, wherein the door side engagement means is constituted by an engagement beam member extending in the vertical direction, and the engagement The means restricting portion is a rib-like protrusion extending in the vertical direction at the door side end portion of the B pillar in the vehicle front-rear direction.

  According to this configuration, since the door-side engagement means constituted by the beam member is regulated by the engagement means regulating portion made of the rib-shaped protrusion, the tensile stress received from the strength member during the vehicle side load action is dispersed, The movement of the strength member in the vehicle front-rear direction can be reliably regulated. Further, by providing rib-shaped protrusions on the B pillar, the strength of the B pillar itself is also improved. Therefore, the tensile strength of the strength member acts more effectively as a B-pillar deformation suppressing force with respect to the vehicle side load, and as a result, the vehicle interior capacity can be further ensured.

  The vehicle body side part structure according to claim 4 is the vehicle body side part structure according to claim 3, wherein a groove-like recess into which the engagement beam member is fitted in a portion of the B pillar where the engagement beam member is accommodated. It is formed.

  According to this configuration, the engagement between the strength member and the B pillar is further strengthened by fitting the door side engagement means formed of the beam member for engagement into the groove-shaped recess formed in the B pillar. Since the strength of the B-pillar itself is also improved, the tensile strength of the strength member acts more effectively as a B-pillar deformation suppressing force against the vehicle side load, and as a result, the vehicle interior capacity can be further secured.

  The vehicle body side part structure according to claim 5 is the vehicle body side part structure according to claim 3 or 4, wherein the strength member is formed of a beam member, and the first strength member disposed inside the door; A second strength member disposed inside the door below the first strength member, and the B-pillar side end portion of the first strength member and the second strength member by the engaging beam member. The B pillar side end portion of the strength member is connected.

  According to this configuration, the movement of the engaging beam member connecting the B pillar side end of the first strength member and the B pillar side end of the second strength member in the vehicle front-rear direction is restricted by the engagement means restricting portion. Therefore, the movement of the first strength member and the second strength member in the vehicle front-rear direction is directly regulated, and the tensile strength of these strength members acts more effectively as a B-pillar deformation suppression force against the vehicle side load. As a result, the vehicle interior capacity can be further secured.

  The vehicle body side part structure according to claim 6 is the vehicle body side part structure according to any one of claims 3 to 5, wherein the strength member and the engaging means are arranged in the vehicle front-rear direction via the B pillar. An engaging means restricting portion of a rib-like protrusion that is disposed inside both adjacent doors and restricts the movement of the engaging means of both the adjacent doors in the vehicle front-rear direction is front and rear of the vehicle with respect to the B pillar. It is characterized by being formed substantially parallel to the direction.

  According to this configuration, the strength of the B pillar itself is further improved, and when a vehicle side load is applied, a tensile force is also applied to the strength members disposed inside the adjacent doors. The tensile strength acts more effectively as a B-pillar deformation suppressing force against the vehicle side load, and as a result, the vehicle interior capacity can be more reliably maintained.

  As described above, according to the present invention, a tensile force is generated in the strength member when a load from the side of the vehicle is applied, but the movement of the strength member in the vehicle longitudinal direction in the direction away from the B pillar is restricted. 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.

1 is a schematic configuration side view showing an embodiment of a vehicle to which a vehicle body side part structure of the present invention is applied. It is a detailed explanatory view of the vehicle body side part structure of FIG. It is explanatory drawing of the door catcher mechanism provided in the vehicle body side part structure of FIG. It is explanatory drawing of an effect | action of the vehicle body side part structure of FIG. It is explanatory drawing of the B pillar lower part in the vehicle body side part structure of FIG. It is AA sectional drawing of FIG. It is detailed explanatory drawing which shows other embodiment of the vehicle body side part structure of this invention.

  Hereinafter, an embodiment 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 to which the vehicle body side part structure of this embodiment is applied. This vehicle is, for example, a station wagon type passenger vehicle, and a front door 6 and a rear 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 a C pillar outer formed on the rear quarter panel outer and a C pillar inner formed on the rear quarter panel inner.

  Further, below the rear quarter panel inner, for example, a rear arch inner that constitutes the outer side surface of the rear wheel house in the vehicle width direction and a wheel apron that constitutes the inner side surface of the rear wheel house in the vehicle width direction are connected. Therefore, in this case, the C pillar 14 is a part of the rear quarter portion 20. Further, a front fender portion 4 is continuously provided in front of the A pillar 10 in the vehicle.

  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. 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. 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, three front door beams 35 to 37 are disposed inside the front door 6 as strength members that resist loads from the side of the vehicle. These front door beams 35 to 37 are formed of, for example, high-tensile steel plates as described in Patent Document 1 described above, and are also used for coupling the front door beams 35 to 37 and a metal plate material constituting the front door 6, for example, steel plates. For example, the structure described in Patent Document 1 described above is used. In this embodiment, as clearly shown in FIG. 2, a front door upper beam 35 as a first strength member is disposed slightly above the lower front door hinge 22 in a substantially horizontal direction and in the vehicle front-rear direction. Arranged in the longitudinal direction. A front door lower beam 36 as a second strength member is disposed below the front door upper beam 35. The front door lower beam 36 is connected to the front end portion of the front door upper beam 35 through the individual short beam member 42 at the front end portion in the vehicle front-rear direction (hereinafter also simply referred to as a front end portion), and the rear end in the vehicle front-rear direction. The beam member is disposed with the longitudinal direction of the beam member in the vehicle front-rear direction so that the portion (hereinafter also simply referred to as a rear end portion) is downward with respect to the front end portion. A front door connecting beam 37 as a door side engaging means for connecting the rear end portion of the front door upper beam 35 and the rear end portion of the front door lower beam 36 has the longitudinal direction of the beam member directed in the vehicle vertical direction. Arranged.

  A connecting portion between the front end portion of the front door upper beam 35 and the front end portion of the front door lower beam 36 is disposed at the front end portion of the front door 6, and the rear end portion of the front door upper beam 35 and the rear end portion of the front door lower beam 36 are arranged. The front door connecting beam 37 for connecting the two is disposed at the rear end of the front door 6. Further, the front door connecting beam 37 constituting the door side engaging means protrudes from the side surface of the vehicle interior to the vehicle interior side at the rear end of the front door 6, that is, the position of the B pillar 12 (see FIG. 6). That is, the front door connecting beam 37 constituting the door side engaging means protrudes inward in the vehicle width direction at the position of the B pillar 12 from the vehicle interior side surface of the front door 6 when the door is closed. Since the beam 37 is a beam member, the door side engaging means of the front door beam in this embodiment is extended in the vertical direction. In this embodiment, the front door connecting beam 37, the front door upper beam 35, and the front door lower beam 36 are connected by using the door beam and steel plate coupling structure described in Patent Document 1 described above.

  In the vehicle according to this embodiment, three rear door beams 38 to 40 are also arranged 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 formed of, for example, high-tensile steel plates as described in Patent Document 1 described above, and for joining the rear door beams 38 to 40 and a metal plate material constituting the rear door 8, for example, steel plates, For example, the structure described in Patent Document 1 described above is used. In this embodiment, as clearly shown in FIG. 2, the rear door upper beam 38 as the first strength member is substantially horizontal at a position slightly above the lower rear door hinge 26, that is, at the height position of the front door upper beam 35. And the longitudinal direction of the beam member in the vehicle longitudinal direction. A rear door lower beam 39 as a second strength member is disposed below the rear door upper beam 38. The rear door lower beam 39 is connected to the rear end portion of the rear door upper beam 38 via an individual short beam member 42 at the vehicle front-rear direction rear end portion, and the vehicle front-rear direction front end portion is downward with respect to the rear end portion. In this way, the longitudinal direction of the beam member is arranged in the longitudinal direction of the vehicle. A rear door connecting beam 40 as a door side engaging means for connecting the front end portion of the rear door upper beam 38 and the front end portion of the rear door lower beam 39 is disposed with the longitudinal direction of the beam member directed in the vehicle vertical direction.

  A connecting portion between the rear end portion of the rear door upper beam 38 and the rear end portion of the rear door lower beam 39 is disposed at the rear end portion of the rear door 8, and connects the front end portion of the rear door upper beam 38 and the front end portion of the rear door lower beam 39. The connecting beam 40 is disposed at the front end of the rear door 8. Further, the rear door connecting beam 40 constituting the door side engaging means protrudes from the side surface of the vehicle interior to the vehicle interior side at the front end of the rear door 8, that is, the position of the B pillar 12 (see FIG. 6). That is, the rear door connecting beam 40 constituting the door side engaging means protrudes inward in the vehicle width direction from the side surface of the rear door 8 when the door is closed at the position of the B pillar 12, and the rear door connecting beam 40 is Since it is a beam member, the door side engaging means of the rear door beam in this embodiment is extended in the vertical direction. In this embodiment, the rear door connecting beam 40, the rear door upper beam 38, and the rear door lower beam 39 are connected using the door beam and steel plate coupling structure disclosed in Patent Document 1 described above.

  The connecting portion of the rear door upper beam 38 and the rear door lower beam 39 by the individual short beam member 42 is engaged with the C pillar 14, that is, the rear quarter portion 20 by the rear door catcher mechanism 30 provided at the lower part of the rear door 8 and the C pillar 14. Is done. For example, as shown in FIG. 3, the rear door catcher mechanism 30 is provided at the lower portion of the C pillar 14 in the rear quarter portion 20 and the fitting member 32 that protrudes rearward from the rear end portion of the metal plate member constituting the rear door 8. And the receiving member 34 formed. An engaging portion 32a is formed at the projecting distal end of the fitting member 32 so as to be more flanged than the base portion, and the receiving member 34 is formed with a fitting groove 34a into which the engaging portion 32a is fitted when the rear door 8 is closed. Has been. Therefore, when the rear door 8 is closed, the engaging portion 32 a of the fitting member 32 is fitted into the fitting groove 34 a of the receiving member 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 engaging portion 32a engages with the fitting groove 34a to restrict movement. Accordingly, as will be described later, when a tensile force in the vehicle front-rear direction is generated in the rear door upper beam 38 or the rear door lower beam 39 due to a load from the side of the vehicle, the rear door upper beam 38 and the rear door lower beam 39 Movement in the vehicle front-rear direction is restricted by the rear door catcher mechanism 30.

  In this embodiment, the front end portion of the front door upper beam 35 and the front end portion of the front door lower beam 36 are engaged with the A pillar 10 by, for example, the lower front door hinge 22. The rear end portion of the rear door upper beam 38 and the rear end portion of the rear door lower beam 39 are engaged with the C pillar 14, that is, the rear quarter portion 20 by, for example, a rear door catcher mechanism 30. Since the rear end portion of the front door 6 is engaged with the B pillar 12 by the front door lock mechanism 24 and the front end portion of the rear door 8 is engaged with the B pillar 12 by the rear door hinge 26, the front door upper beam 35 is engaged. The rear end portion, the rear end portion of the front door lower beam 36, the front end portion of the rear door upper beam 38, and the front end portion of the rear door lower beam 39 are considered to be engaged with the B pillar 12.

  FIG. 4 is a plan view schematically showing the vehicle body side part structure of this embodiment. In the figure, only the front door upper beam 35 is representatively shown as the front door beams 35 to 37 inside the front door 6, and only the rear door upper beam 38 is shown as the rear door beams 38 to 40 inside the rear door 8. For example, as shown in the figure, the front end portion of the front door upper beam 35 is engaged with the A pillar 10, and 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. When the rear end portion of the beam 35 and the front end portion of the rear door upper beam 38 are engaged via the B pillar 12, when a load acts from the side of the vehicle, as indicated by the white arrow in the figure, A tensile force is generated in the front door upper beam 35 and 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 upper beam 35 and the rear door upper beam 38 is increased. It works effectively. As is well known, since the tensile strength is a breaking strength in the tensile direction, the lateral load of the vehicle is converted into the tensile force of the front door upper beam 35 and the rear door upper beam 38, and the tensile strength of the B pillar 12 is changed. If the deformation can be suppressed, the vehicle interior volume can be effectively secured. As described above, since the front door lower beam 36 is connected to the front door upper beam 35 and the rear door lower beam 39 is connected to the rear door upper beam 38, the front door lower beam 35 and the rear door upper beam 38 are pulled. If a force is generated, a tensile force is also generated in the front door lower beam 36 and the rear door lower beam 39.

  As described above, the rear end portion of the front door 6 is engaged with the B pillar 12 by the front door lock mechanism 24, and the front end portion of the rear door 8 is engaged with the B pillar 12 by the rear door hinge 26. It is considered that the rear end portion of the front door upper beam 35, the rear end portion of the front door lower beam 36, the front end portion of the rear door upper beam 38, and the front end portion of the rear door lower beam 39 are all engaged with the B pillar 12. However, in this embodiment, these door beams are more firmly engaged with the B pillar 12 and the tensile strength of the door beams is effectively used for securing the vehicle interior volume. FIG. 5 is a perspective view of the lower portion of the B pillar 12 in this embodiment, and FIG. 6A is a cross-sectional view taken along the line AA in FIG.

  The front door connecting beam 37 constituting the engaging means in this embodiment protrudes inward in the vehicle width direction when the door is closed from the side surface of the front door 6 at the rear end of the front door 6, that is, at the position of the B pillar 12. The rear door connecting beam 40 protrudes inward in the vehicle width direction when the door is closed at the front end of the rear door 8, that is, at the position of the B pillar 12, from the side of the passenger compartment. Therefore, in this embodiment, the front end portion and the rear end portion of the outer side surface in the vehicle width direction of the B-pillar 12 are respectively recessed long in the vertical direction so that the front door connecting beam 37 and the rear door in the vehicle width direction inner side when the door is closed. A groove-like recess 44 in which the inner side in the vehicle width direction of the connecting beam 40 is inserted independently is extended in the vertical direction. Since the front door connecting beam 37 and the rear door connecting beam 40 are extended in the vertical direction, the two groove-shaped recesses 44 are parallel to each other. By forming the groove-shaped recess 44 in this way, rib-like protrusions 46 projecting outward in the vehicle width direction are extended in the vertical direction at the front end portion and rear end portion of the outer side surface of the B pillar 12 in the vehicle width direction. Is done.

  Therefore, when the front door 6 and the rear door 8 are closed, the vehicle width direction inner side portion of the front door connecting beam 37 and the vehicle width direction inner side portion of the rear door connecting beam 40 are fitted into the groove-shaped recess 44, respectively. Since a rib-like protrusion 46 projects from the B pillar 12 outward in the vehicle width direction in front of the front door connecting beam 37 in the vehicle front-rear direction, the front door connecting beam 37 is moved forward in the vehicle front-rear direction by the rib-like protrusion 46. Movement is restricted. Since the front door upper beam 35 and the front door lower beam 36 as strength members having tensile strength in the longitudinal direction of the vehicle are connected to the front door connecting beam 37, these front door beams 35, 36 are connected to the B pillar 12. Movement in the vehicle front-rear direction toward the separating direction is restricted by a rib-like protrusion 46 on the B-pillar front end side, and this rib-like protrusion 46 on the B-pillar front end side constitutes an engagement means restricting portion for the front door beams 35 and 36. .

  Similarly, a rib-like projection 46 is also provided on the rear side of the rear door connecting beam 40 in the vehicle front-rear direction so as to project outward from the B pillar 12 in the vehicle width direction, so that the rear door connecting beam 40 is rearward in the vehicle front-rear direction. Is restricted from moving to. Since a rear door upper beam 38 and a rear door lower beam 39 as strength members having tensile strength in the vehicle longitudinal direction are connected to the rear door connecting beam 40, the direction in which these rear door beams 38 and 39 are separated from the B pillar 12. The movement in the vehicle front-rear direction is restricted by a rib-like protrusion 46 on the rear end side of the B pillar, and the rib-like protrusion 46 on the rear end side of the B pillar constitutes an engagement means restricting portion for the rear door beams 38 and 39. Therefore, as described above, when a load is applied from the side of the vehicle and, as a result, a tensile force is generated in the front door beams 35 and 36 and the rear door beams 38 and 39, those door beams are separated from the B pillar 12. Movement in the longitudinal direction of the vehicle is restricted by the engagement of the front door connecting beam 37 and the rear door connecting beam 40 and the rib-like protrusion 46. As a result of the movement of the front door beams 35 and 36 and the rear door beams 38 and 39 in the vehicle front-rear direction separating from the B pillar 12 is restricted, the tensile strength of these door beams effectively acts as a deformation suppressing force of the B pillar 12. In addition, the vehicle interior volume is secured.

  As shown in FIG. 6B, the rib-like protrusion 46 may be widened in the vehicle front-rear direction. By doing in this way, the ridgeline part of B pillar 12 which comprises the rib-shaped protrusion 46 increases. Such a ridge line part is shape | molded by press work, for example. Since press working is generally plastic working, for example, the strength is supposed to increase due to residual stress accompanying plastic deformation of a steel plate. Accordingly, the ridge line portion of the B pillar 12 is increased by widening the rib-like protrusion 46 and, as a result, the strength of the B pillar 12 is improved. Therefore, the deformation suppressing force against the load from the side of the B pillar 12 itself is increased. It becomes.

  FIG. 7 is a perspective view of the vicinity of the B pillar showing another embodiment of the vehicle body side part structure of the present invention. This embodiment is similar to the embodiment of FIGS. 1 to 6 described above. Therefore, the same components are denoted by the same reference numerals, and detailed description thereof is omitted. In this embodiment, the groove-like recess 44 and the rib-like protrusion 46 formed in the lower part of the B pillar 12 are the same as those shown in FIGS. 2 and 5, for example. In this embodiment, the front door 6 is extended in a substantially horizontal direction from the front end portion to the rear end portion of the front door 6 at the height position of the groove-like recess 44 and the rib-like protrusion 46 and is in the vehicle front-rear direction. A front door beam 48 having a tensile strength is disposed on the front. The front end of the front door beam 48 is connected to a metal plate member constituting the front door 6, for example, a steel plate member, and the front end of the front door 6 at the same height position is, for example, the lower front door hinge 22 in FIG. Is engaged with the A pillar 10. Similarly, the rear door 8 has a rear door beam 50 extending in a substantially horizontal direction from the front end portion to the rear end portion of the rear door 8 at a height position equivalent to that of the front door beam 48 and having tensile strength in the vehicle front-rear direction. Was arranged. The rear end portion of the rear door beam 50 is connected to a metal member constituting the rear door 8, for example, a steel plate member, and the rear end portion of the rear door 8 at the same height position is connected to the C pillar 14 by the rear door catcher mechanism 30 described above, for example. That is, it is engaged with the rear quarter portion 20.

  In this embodiment, when the doors of the front door 6 and the rear door 8 are closed, the groove-like recesses 44 are fitted into the groove-like recesses 44 formed in the B pillar 12, and the vehicle interior side surface and the rear door of the front door 6 are fitted. The engaging beam member 52 protruding from the side surface of the passenger compartment 8 is attached to each door. The engaging beam members 52 extend in the vertical direction in parallel to each other, and are fixed to the side surface of the front door 6 and the side surface of the rear door 8 by welding or the like. Therefore, also in this embodiment, when the front door 6 and the rear door 8 are closed, the engagement beam member 52 projecting inward in the vehicle width direction from the rear end portion of the front door 6 and the vehicle width from the front end portion of the rear door 8. An engaging beam member 52 projecting inward in the direction is fitted into a groove-like recess 44 formed in the B pillar 12. Rib-shaped protrusions 46 project outwardly in the vehicle width direction on the front side in the vehicle front-rear direction of the engagement beam member 52 on the front door 6 side and on the rear side in the vehicle front-rear direction of the engagement beam member 52 on the rear door 8 side. Therefore, the movement of each engagement beam member 52 in the vehicle front-rear direction separating from the B pillar 12 is restricted. A front door beam 48 and a rear door beam 50 are disposed inside the front door 6 and the rear door 8, respectively, and the engagement beam member 52 is separated from the B pillar 12 by the rib-like protrusions 46 in the vehicle front-rear direction. When the movement is restricted, both the B pillar side end of the front door beam 48 and the B pillar side end of the rear door beam 50 continue to be engaged with the B pillar 12. Therefore, when a load from the side of the vehicle acts and a tensile force is generated in the front door beam 48 and the rear door beam 50, the tensile strength of these door beams effectively acts as a deformation suppressing force of the B pillar 12, and the vehicle interior volume Is secured.

  As described above, in these embodiments, the connecting beams 37 and 40 and the engaging beam member 52 for engaging the B pillar side end portion of the door beam with the B pillar 12 protrude from the side surface of the passenger compartment of the door. The rib is provided on the door at the position of the B pillar 12 and protrudes outward in the vehicle width direction and regulates the movement of the connecting beams 37 and 40 and the engaging beam member 52 in the vehicle longitudinal direction in the direction away from the B pillar 12. The protrusion 46 is formed on the door side in the vehicle front-rear direction from the portion of the B pillar 12 where the connecting beams 37 and 40 and the engaging beam member 52 are accommodated. Therefore, even when a load from the side of the vehicle acts and a tensile force in the vehicle front-rear direction is generated on the door beam, the movement of the door beam in the vehicle front-rear direction causes the connecting beams 37 and 40, the engaging beam member 52, and the rib-like protrusion to move. Directly or indirectly regulated by engagement with 46, the B pillar side end of the door beam continues to be engaged with the B pillar 12. Therefore, the tensile strength of the door beam 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.

  Further, the engagement means restricting portion for restricting the movement of the connecting beams 37 and 40 and the engaging beam member 52 in the vehicle front-rear direction away from the B pillar 12 is an end portion on the door side of the B pillar 12 in the vehicle front-rear direction. Therefore, the tensile stress received from the door beam when the vehicle is loaded laterally is dispersed, and the movement of the door beam in the vehicle front-rear direction can be surely restricted. Further, by providing the rib-like protrusions 46 on the B pillar 12, the strength of the B pillar 12 itself is also improved. Therefore, the tensile strength of the door beam acts more effectively as a B-pillar deformation suppressing force against the vehicle side load, and as a result, the vehicle interior capacity can be further secured.

  Further, since the grooved recess 46 into which the connecting beams 37 and 40 and the engaging beam member 52 are accommodated is formed in the B pillar 12, the engagement between the door beam and the B pillar 12 is further enhanced. In addition, since the strength of the B pillar 12 itself is also improved, the tensile strength of the door beam acts more effectively as a B pillar deformation suppressing force against the vehicle side load, and as a result, the vehicle interior capacity can be further secured. it can.

  Further, since the door upper beam and the door lower beam are connected by the connecting beams 37 and 40, the movement of the door upper beam and the door lower beam in the vehicle front-rear direction is directly regulated, and the tensile strength of the door beam is reduced with respect to the vehicle side load. It acts more effectively as the B-pillar deformation suppressing force, and as a result, the vehicle interior capacity can be further secured.

  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 6 Front door 8 Rear door 12 B pillar 14 C pillar 20 Rear quarter 35 Front door upper beam (first strength member)
36 Front door lower beam (second strength member)
37 Front door connecting beam (door side engaging means, engaging beam member)
38 Rear door upper beam (first strength member)
39 Rear door lower beam (second strength member)
40 Rear door connecting beam (door side engaging means, engaging beam member)
44 groove-like recess 46 rib-like protrusion (engagement means regulating portion)
48 Front door beam (strength member)
50 Rear door beam (strength member)
52 Beam member for engagement

Claims (6)

In the vehicle body side structure to counter the load from the side of the vehicle,
At least one strength member disposed inside the door of the vehicle and having a tensile strength substantially linearly in the longitudinal direction of the vehicle;
Strength member engaging structure for engaging the B-pillar side end of the strength member with the B-pillar when the door is closed to restrict the movement of the strength member in the vehicle front-rear direction away from the B-pillar of the vehicle. When,
A vehicle body side structure characterized by comprising: The strength member engaging structure is:
Door side engagement means formed on the door at the position of the B pillar so as to protrude from the side surface of the passenger compartment of the door, and for engaging the B pillar side end of the strength member with the B pillar;
A vehicle front-rear direction that is formed on the door side in the vehicle front-rear direction from the portion of the B-pillar where the door-side engagement means is accommodated, protrudes outward in the vehicle width direction, and is separated from the B-pillar of the door-side engagement means. Engaging means restricting portion for restricting movement of
The vehicle body side part structure according to claim 1, further comprising: The door side engaging means is constituted by an engaging beam member extending in the vertical direction,
The vehicle body side portion according to claim 2, wherein the engagement means restricting portion is a rib-like protrusion extending in the vertical direction at an end portion on the door side in the vehicle front-rear direction of the B pillar. Construction.   4. The vehicle body side structure according to claim 3, wherein a groove-like recess into which the engagement beam member is fitted is formed in a portion of the B pillar where the engagement beam member is accommodated. The strength member comprises a beam member;
A first strength member disposed inside the door;
A second strength member disposed inside the door below the first strength member;
Is provided,
5. The vehicle body according to claim 3, wherein the B-pillar side end portion of the first strength member and the B-pillar side end portion of the second strength member are connected by the engagement beam member. Side structure. The strength member and the engaging means are disposed inside both doors adjacent to each other in the vehicle front-rear direction via the B pillar,
The rib-shaped protrusion engaging means restricting portion for restricting movement of the engaging means of both adjacent doors in the vehicle front-rear direction is formed substantially parallel to the B pillar in the vehicle front-rear direction. Item 6. The vehicle body side part structure according to any one of Items 3 to 5.

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