JP2008230458A - Vehicle body side part structure for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body side part structure for an automobile capable of preventing the intrusion of a door body into a cabin when impact load from the external side is applied and ensuring door-opening property of the door even when the impact load is applied from the rear side. <P>SOLUTION: The vehicle body side part structure for the automobile is provided with an engagement pin 39 having a shaft part 39A extending to an inner side in a vehicle width direction in the same outside shape on a rear part of the door body 31, and is provided with a catcher 16 having an engagement member 17 being a cylindrical shape in which an outer end in the vehicle width direction is released and insertable with the shaft part 39A of the engagement pin 39 with a clearance on a vehicle body member constituting a rear edge of a door opening 8. When the excessive impact load is applied to the door body 31 from the external side, the engagement pin 39 is abutted on the engagement member 17 to suppress intermediate-folding deformation of the door body 31. Whereas, even if the impact load from the rear side of the vehicle body is applied and a rear part of the vehicle body is deformed, the door-opening property can be ensured without engaging the shaft part 39A of the engagement pin 39 with the engagement member 17. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle body side structure, and particularly to a vehicle body side structure that prevents the door body from entering a vehicle compartment when an impact load is applied to the door body of a side door from the outside.

  In general, a side door disposed on the side of a vehicle body is supported by the vehicle body by a plurality of hinges with front ends spaced apart from each other to open and close the door opening, and is kept closed by a door lock mechanism. It is configured as follows.

  Such a side door has a door body in which a door inner panel on the vehicle compartment side and a door outer panel on the outside of the vehicle body are arranged to face each other and the peripheral edges are coupled to each other, and a door lock is provided between the door inner panel and the door outer panel. Equipment, window regulators, etc. are arranged. In addition, a locking pin is provided at the rear end of the door body for the purpose of ensuring the safety of the passenger, and a catcher that engages with the locking pin is provided at the edge of the door opening on the vehicle body side. There is a vehicle body side structure in which a locking pin engages with a catcher when an impact load is applied from the outside to prevent the door body from entering the vehicle interior.

  Patent Document 1 discloses a vehicle body side structure in which a door pin of this type of side door is provided with a locking pin and a catcher on the vehicle body. 15 shows a side view of a vehicle in FIG. 15 and a sectional view taken along line XI-XI in FIG. 15 in FIG. 16, the door body 111 is constituted by a door inner panel 112 and a door outer panel 113. A wall portion 112 a formed and bent toward the door outer panel 113 is provided at the rear end of the door inner panel 112, and the outer end of the wall portion 112 a is coupled to the rear end of the door outer panel 113.

  The inner surface of the wall 112a of the door inner panel 112 is reinforced by the reinforcement 114, and a locking pin 115 protrudes rearward from the reinforced portion. The locking pin 115 is a bolt shape having a large-diameter head portion 115a and a small-diameter shaft portion 115b in which a thread groove is formed, and the wall portion 112a and the reinforcement force 114 are attached to the nut 116 welded to the reinforcement force 114. It is threaded through.

  On the other hand, the wheel house peripheral edge portion 102 of the rear fender 101 that forms the door opening portion is a fender portion 103 disposed at a distance from the wall portion 112a formed on the door inner panel 112 of the door main body 111. The reinforcement 104 is joined to the rear surface side of the fender portion 103. Further, the outer portions of the fender portion 103 and the reinforcement 104 are bent rearward to form a corner portion 107, and the fender portion 103 is extended rearward from the corner portion 107, and the rear end is the outer end of the wheel house outer panel 105. It is joined to.

  An engagement hole 108 serving as a catcher into which the locking pin 115 is engaged with the closing operation of the side door 110 is formed through the fender portion 103 and the reinforcement 104 in the corner portion 107. The engagement hole 108 includes a first hole 108 a formed in a side surface 103 a extending rearward of the fender portion 103, and a fender portion that is continuous with the first hole 108 a and faces the wall portion 112 a of the door body 111. 103 is formed by a second hole portion 108b extending in the vehicle width direction on the front surface 103b side of 103.

  The first hole 108a is formed so that the vertical width is slightly larger than the outer diameter of the head 115a so that the head 115a of the locking pin 115 passes when the side door 110 is closed. The second hole 108b is formed so that the vertical width is slightly larger than the outer diameter of the shaft 115b and smaller than the outer diameter of the head 115a of the locking pin 115 so that the shaft 115b of the locking pin 115 can pass therethrough. Yes.

  With this configuration, when the side door 110 is closed, the head 115a and the shaft 115b of the locking pin 115 provided at the rear end of the door body 111 are connected to the first hole 108a and the second hole of the engagement hole 108. As shown in FIG. 16, the shaft portion 115a penetrates the second hole portion 108b and the head portion 115a is disposed opposite to the front surface 103b of the fender portion 103.

  On the other hand, when an impact load is applied to the door body 111 from the outside in the closed state of the side door 110, the shaft portion 115b of the locking pin 115 protruding from the rear end of the door body 111 is the second. The movement of the door main body 111 toward the vehicle interior side is restricted by contacting the inner end of the hole 108b. Further, when the middle part of the door main body 111 is bent in the vehicle interior and the rear end of the door main body 111 moves forward, the head portion 115a of the locking pin 115 is moved into the engagement hole 115. Engage with the peripheral edge of the two holes 8b to restrict the rear end of the door main body 111 from moving forward, and prevent the door main body 111 from entering the vehicle interior due to the middle deformation.

JP-A-6-40259

  According to the above-mentioned Patent Document 1, the locking pin 115 protrudes rearward from the rear end portion of the door main body 111, the corner portion 107 of the fender portion 103 is reinforced by the reinforcement 104, and the corner portion 107 is engaged with the corner portion 107. Since the engagement hole 108 that engages with the stop pin 115 is provided, when an impact load is applied to the door main body 111 from the outside, the movement of the rear portion of the door main body 111 toward the vehicle interior and the front is restricted and the door main body is restricted. Intrusion into the vehicle interior due to the middle bending deformation of 111 can be prevented.

  However, for example, when an impact load is applied from the rear side of the vehicle body, the head 115a of the locking pin 115 formed to have a large diameter due to deformation of the fender portion 103 or the like due to the impact load is restrained, so that the locking hole 115 comes out of the engagement hole 108. There is a concern that the operation may be hindered so that it is difficult to open the door main body 111, and so-called door opening performance cannot be ensured.

  Therefore, an object of the present invention made in view of such points is to effectively prevent the door body from entering the vehicle interior when an impact load from the outside acts on the door body, and when the impact load acts from the rear side. The present invention also provides a vehicle body side structure with excellent safety that can secure the door opening performance and avoid or reduce the influence on the passenger.

  The invention of the vehicle body side structure according to claim 1, which achieves the above object, is provided in front of a door body in which a door inner panel on the vehicle compartment side and a door outer panel on the vehicle body outside are arranged opposite to each other and their peripheral edges are coupled to each other. The side door is provided with a hinge pin on a vehicle body constituting member that constitutes a front edge portion of a door opening formed in the vehicle body, and is provided with a locking pin at the rear of the door body. A vehicle body side structure including a catcher that can engage with the locking pin in a door closed state on a vehicle body constituting member that constitutes a rear edge of the door opening. A base portion fixed to the door main body in a rear portion of the door main body, and a shaft portion extending inward in the vehicle width direction from the base portion in the same outer shape or taper shape and projecting from the door main body, and the catcher includes the door After the opening A latch that is disposed in a vehicle body member that constitutes the portion and extends in the vehicle width direction and has an outer end in the vehicle width direction that is open, and the shaft portion of the locking pin can be inserted with a gap. A member is provided.

  According to this invention, when an excessive impact load acts on the door body from the outside, the impact load causes the middle deformation of the door body to bend toward the vehicle interior, and the rear portion of the door body moves forward. When it moves, the locking pin arranged at the rear part of the door body moves forward, and its shaft part abuts against the locking member of the catcher arranged on the vehicle body member to restrict the forward movement of the rear part of the door body. Thus, the folding deformation of the door main body is suppressed, and the door main body can be prevented from entering the vehicle interior.

  On the other hand, in the closed state of the door, even if the impact load from the rear of the vehicle body acts and the rear portion of the vehicle body is deformed, the locking pin that is arranged at the rear portion of the door body and extends inward in the vehicle width direction The shaft portion has the same outer shape or taper shape in the vehicle width direction, and the catch locking member disposed in the vehicle body member is a cylindrical shape extending in the vehicle width direction and has a gap between the shaft portion of the locking pin. Therefore, the locking pin shaft and the locking member are prevented from engaging, and the locking pin shaft does not have to be restrained by the catch. The shaft portion of the locking pin is easily pulled out from the locking member outward in the vehicle width direction, the door body can be opened, and the door opening performance can be secured.

  According to a second aspect of the present invention, in the vehicle body side structure according to the first aspect, the vehicle body member constituting the rear edge portion of the door opening portion has a shaft portion of the locking pin in the door closed state. A body outer panel on the outside of the vehicle body in which an opening to be inserted is formed, a body inner panel that is coupled to the body outer panel and is opposed to the vehicle interior, and is disposed between the body outer panel and the body inner panel. A locking member that is provided with a catcher mounting portion that is opposed to the opening at an interval and is coupled to the body inner panel, the locking member having an outer end in the vehicle width direction being opened It is characterized by being coupled to the reinforcement catcher mounting portion corresponding to the opening.

  This invention shows the concrete structure of the vehicle body member which comprises the rear edge part of the door opening part by which a catcher is arrange | positioned, and the body in which the opening part in which the axial part of the latching pin is inserted in the door closed state was formed An outer panel; a body inner panel coupled to the body outer panel and disposed opposite thereto; and a reinforcement disposed between the body outer panel and the body inner panel and coupled to the body inner panel. By installing a locking member at the catcher mounting part in the reinforcement between the body outer panel and the body inner panel, the mounting rigidity of the locking member is secured, and the locking member ensures the forward movement of the locking pin. This can prevent the door body from being bent and can prevent the door body from entering the vehicle interior. Even if the rear part of the vehicle body is deformed due to an impact load from the rear of the vehicle body, the locking pin shaft and the locking member are prevented from being engaged, and the door body can be opened to open the rear door. Sex can be secured. Appearance can be ensured without the locking member protruding outward from the body outer panel.

  According to a third aspect of the present invention, in the vehicle body side part structure of the second aspect, the mounting portion is fitted to the periphery of the opening of the body outer panel, and the shaft portion of the locking pin has a gap. It has a bottomed cylindrical shape having an insertable inner diameter, and is provided with a grommet whose bottom abuts against a catcher mounting portion of the reinforcement.

  According to the present invention, even when the door body is in the opened state, the opening that opens to the body outer panel is closed by the grommet, so that the appearance quality can be ensured.

  The invention according to claim 4 is the vehicle body side structure according to any one of claims 1 to 3, further comprising a door impact beam extending in the front-rear direction in the door body, A base portion of the locking pin is fixed to a rear end portion, and a shaft portion of the locking pin extends inward in the vehicle width direction through a locking pin through hole that opens in the door inner panel. It is characterized by.

According to the present invention, the door impact beam extending in the front-rear direction in the door body is provided, and the locking pin is fixed to the rear end portion of the door impact beam. It can be reliably suppressed.
According to a fifth aspect of the present invention, in the vehicle body side structure according to any one of the first to fourth aspects, a locking pin through-hole through which the shaft portion of the locking pin penetrates the door inner panel is opened. A door stopper made of an elastic member having a bottomed cylindrical shape in which the shaft portion of the locking pin can be inserted into the locking hole of the door inner panel and whose top abuts against the vehicle body structural member when the door is closed is disposed. It was established.

  According to the present invention, the locking pin is covered with the door stopper to improve the appearance when the door is opened, and the locking pin and the door stopper are disposed in the same part, so that the arrangement space is reduced and the vehicle body design is reduced. Can be secured.

  According to the present invention, when an excessive impact load is applied to the door body from the outside, the door body is prevented from being bent by the impact load, so that the door body can be prevented from entering the vehicle interior, and the impact from the rear of the vehicle body can be suppressed. Even if the rear part of the vehicle body is deformed due to a load, opening the door body in the closed state allows the shaft portion of the locking pin to easily come out of the locking member outward in the vehicle width direction, opening the door body. This makes it possible to secure the door opening performance.

(First embodiment)
An embodiment of a vehicle body side structure according to the present invention will be described with reference to FIGS. 1 to 4 by taking the case where the side door is a rear door as an example. In the figure, the arrow F indicates the vehicle body front direction, the arrow OUT indicates the outward direction, and the arrow UP indicates the upward direction.

  1 is a side view of an automobile to which the vehicle body side structure according to the present embodiment is applied, FIG. 2 is a cross-sectional view taken along a line II in FIG. 1, FIG. 3 is an enlarged view of a portion A in FIG. 2 is a sectional view taken along line II-II in FIG.

  The left and right sides of the vehicle body 1 are hollowed by a side sill 2 formed in a hollow shape by a side sill outer panel and a side sill inner panel and extending in the front-rear direction along the lower part of the passenger compartment, and by a side rail outer panel and a side rail inner panel. The side rail 3 is formed in a hollow shape by the front pillar outer panel and the front pillar inner panel and extends in the vertical direction and extends in the vertical direction and extends from the front end of the side sill 2 to the side rail. A front pillar 4 that connects the front end of 3 and a rear pillar 5 that is formed in a hollow shape by a rear pillar outer panel and a rear pillar inner panel and extends in the vertical direction to connect the rear end of the side sill 2 and the rear end of the side rail 3. -Have. A center pillar 6 is formed between the front pillar 4 and the rear pillar 5 in a hollow shape by a center pillar outer panel and a center pillar inner panel, and extends in the vertical direction to be connected to the side sill 2 and the side rail 3. . Between the front pillar 4 and the center pillar 6 and between the center pillar 6 and the rear pillar 5, a door opening 7 for the front side door and a door opening 8 for the rear side door that open to the side of the vehicle body are formed, respectively. The The left and right side sills 2 are connected by a floor panel 9, and a roof panel is disposed between the left and right side rails 3.

  The side sill outer panel, side rail outer panel, front pillar outer panel, rear pillar outer panel, and center pillar outer panel of the side sill 2, side rail 3, front pillar 4, rear pillar 5, and center pillar 6 are integrally formed by a body outer panel 11. The side sill inner panel, the side rail inner panel, the rear pillar inner panel, and the like are integrally formed by the body inner panel 13.

  The rear edge of the lower end of the rear portion of the door opening 8 formed by the rear portion of the side sill 2 and the lower portion of the rear pillar 5 is a body outer panel 11 that forms a side sill outer panel of the side sill 2 and a rear outer panel of the rear pillar 5 as shown in FIG. A body inner panel 13 that forms a side sill inner panel and a rear inner panel, and a reinforcement 14 that is coupled to the side sill 1 and the rear pillar 5 to stiffen the side sill 1 and the rear pillar 5 and secures a coupling rigidity between the side sill 2 and the rear pillar 5. And the vehicle body constituting member of the load transmitting member 15.

  The body outer panel 11 moves toward the front of the vehicle body via a fender portion 11A that forms a wheel house peripheral portion, and a bent portion 11B that is bent inward in the vehicle width direction, that is, toward the vehicle interior, from the front end of the fender portion 11A. An inclined portion 11C that gradually moves inwardly, a flat portion 11D that extends forward from the front end of the inclined portion 11C, and a front portion 11E that is bent inward from the front end of the flat portion 11D and extends in the vehicle width direction. The end portion 11F that bends forward from the inward end of the front surface portion 11E is formed in a continuous step shape. A circular opening 12 is formed in the flat portion 11D.

  The body inner panel 13 has an end edge 13Aa welded to the end edge 11Aa of the fender portion 11A of the body outer panel 11 so as to face the fender portion 11A with a gap therebetween, and from the front end of the fender portion 13A toward the vehicle interior. The inclined portion 13C that gradually moves toward the vehicle interior as it moves forward through the bent portion 13B and the front end of the inclined portion 13C faces the flat portion 11D of the body outer panel 11 across a gap from the front end of the vehicle body. The extending flat portion 13D is formed in a continuous step shape, and the end edge 13Da of the flat portion 13D is coupled to the end edge 11Fa of the end portion 11F of the body outer panel 11. A hollow portion having excellent rigidity is formed along the rear edge of the door opening 8 by the body outer panel 11 and the body inner panel 13 coupled to each other.

  The reinforcement 14 gradually moves toward the vehicle interior as it moves forward from the front end of the fender coupling portion 14A coupled to the fender portion 13A of the body inner panel 11 via a bent portion 14B that bends toward the vehicle interior. Inclined portion 14C, flat portion 14D serving as a catcher mounting portion extending in front of the vehicle body from the front end of inclined portion 14C with a gap therebetween, and extending from the front end of flat portion 14D toward the vehicle interior A front portion 14E that is bent and extends in the vehicle width direction, and an end portion 14F that is bent forward from the inner end of the front portion 14E to the front of the vehicle body are formed in a continuous step shape. The flat portion 13D is coupled with the end portion 9a of the floor panel 9 together.

  The load transmitting member 15 is formed by bending a mounting portion 15B coupled to the flat portion 14D of the reinforcement 14 at the base end of the base portion 15A extending in the vehicle width direction, and the flat portion 13D of the body inner panel 13 at the tip. A contact portion 15C facing each other through a gap is bent.

  As shown in FIG. 3, the flat portion 14D of the reinforcement 14 is opposed to the flat portion 11D of the body outer panel 11 and protrudes outward in the vehicle width direction by the cylindrical locking member 17 and the flat portion 14D. Is formed, and a bottomed cylindrical catcher 16 is disposed.

  The catching member 17 of the catcher 16 has a cylindrical shape having an inner diameter slightly larger than the diameter of the opening 12 that opens to the opposed flat portion 11D, and has an axial core on the same axis as the opening 12. The end 17a is welded and fixed to the flat portion 14D, and there is a gap between the tip 17b and the flat portion 14D of the door outer panel 11. The locking member 17 of the catcher 16 ensures appearance without protruding from the body outer panel 11.

  An elastic member that closes the opening 12 to the opening 12 of the body outer panel 11 to improve the appearance and prevents intrusion of foreign matters such as dust from the opening 12, for example, rubber and bottomed cylindrical grommet 18. Is arranged. The grommet 18 has an annular mounting portion 19B that fits around the periphery of the opening 12 on the outer periphery of the base end of the cylindrical tube portion 19A, and an engagement protrusion 19Aa formed on the inner peripheral surface of the tube portion 19A. A bottomed cylindrical shape having a base portion 19, a cylindrical portion 20 </ b> A slidably fitted in a cylindrical portion 19 </ b> A of the base portion 19, and a bottom portion 20 </ b> B closing the distal end of the cylindrical portion 20 </ b> A, The movable protrusion 20 is formed with an engagement groove 20Aa extending in the vehicle width direction with which the engagement protrusion 19Aa is engaged.

  The grommet 18 configured as described above has the base 19 attached to the flat portion 11D of the body outer panel 11 by fitting the mounting portion 19B to the periphery of the opening 12, and is slidable on the cylindrical portion 19A of the base 19 A dimensional error between the flat portion 11D and the flat portion 14D due to an error in assembly accuracy by moving the bottomed cylindrical movable portion 20 into which the cylindrical portion 20A is fitted with respect to the base portion 19. Even if there is, the bottom portion 20B can be maintained in contact with the flat portion 14D of the reinforcement 14.

  On the other hand, the rear side door 30 has a door body 31 in which a door outer panel 32 on the outside of the vehicle body and a door inner panel 33 on the vehicle compartment side are arranged to face each other and the peripheral edges thereof are coupled to each other. Door lock mechanism (not shown) provided in the vicinity of the rear end, with the front part being supported to be opened and closed by two hinges (not shown) installed between the center pillar 6 having excellent rigidity and strength constituting the front edge of the door. Is held closed.

  As shown in FIG. 2, the door inner panel 33 at the lower rear end of the door main body 31 has a rear surface portion 33C extending from the rear end of the inner side surface portion 33A facing the door outer panel 32 to the door outer panel 32 side through a bent portion 33B. And a flat surface 33D that is bent from the outer end of the rear surface portion 33C and extends to face the door outer panel 32, and is bent toward the door outer panel 32 from the rear end of the flat surface 33D and moves backward. The inclined portion 33E gradually approaches the door outer panel 32, and the edge of the inclined portion 33E is coupled to the edge of the door outer panel 32.

  In the closed state of the door main body 31, the rear end portion, the rear surface portion 33C, the flat portion 33D, and the inclined portion 33E of the inner side surface portion 33A of the door inner panel 33 are the end portion 11F, the front surface portion 11E, and the flat portion 11D of the body outer panel 11, respectively. The rear edge of the door opening 8 is covered while facing the inclined portion 11C with a gap. The flat portion 33D is formed with a locking pin through hole 34 corresponding to the opening 12 formed in the flat portion 11D of the body outer panel 11.

  As shown in FIG. 3, the door outer panel 11 is inserted into the locking pin through hole 34 opened to the flat portion 33D with a gap L1 between the inner peripheral surface 18a of the grommet 18 when the door body 31 is closed. An elastic member, for example, a rubber door stopper 35, with which the top portion 35 a comes into contact with the flat portion 11 </ b> D is disposed. The door stopper 35 has a bottomed cylindrical shape in which an inner hole 35c having an outer peripheral surface 35b and a bottom portion 35d is formed, and a slit-like engaging portion 35e formed in an annular shape on the outer peripheral surface 35b has a locking pin through hole. It is attached to the flat portion 33D of the door inner panel 33 by being fitted to the peripheral edge of the door 34.

  In the space S of the door main body 31 formed by the door outer panel 32 and the door inner panel 33, a door impact beam 36 supported by a front beam bracket and a rear beam bracket 37 (not shown) is disposed. In this space S, other parts such as window glass, a door lock mechanism, and a window regulator (not shown) are provided. However, these are not directly related to the present invention, and the description thereof is omitted.

  The door impact beam 36 is a pipe-like member, extends substantially in the front-rear direction along the inner surface of the door outer panel 32, and has a rear end portion 36a that is lower than the front end portion and is inclined downward as a whole, The front end is attached and supported near the front end of the door inner panel 33 via the front beam bracket near the hinge.

  On the other hand, the rear end portion 36a of the door impact beam 36 has a flat portion 36D formed in a flat plate shape and reaches the vicinity of the inclined portion 33E of the door inner panel 33, and the door inner panel 33 via the rear beam bracket 37. The flat portion 33D is coupled to the front range 33Da.

  The rear beam bracket 37 is a plate-like member whose longitudinal center portion 37A is welded to the front region 33Da of the flat portion 33D of the door inner panel 33 and extends along the door impact beam 36. As shown in FIG. 4, the front end side 37B extending forward from 37A is formed in a substantially arc-shaped cross section so that the center 37Ba is a side surface of the door impact beam 36, and its upper edge 37Bb and lower edge 37Bc are door impact beams, respectively. It is welded to the upper and lower surfaces of 36. The rear end side 37C extending rearward from the central portion 37A is a rear end of the door impact beam 36 through the flat portion 36D of the door impact beam 36 and the flat portion 37D of the body outer panel 11 facing the flat portion 11D. It is welded to the portion 36a.

  A locking pin mounting hole 38 is drilled in the flat portion 37D of the rear beam bracket 37, and a locking pin 39 is mounted in the locking pin mounting hole 38. The locking pin 39 is penetrating through the locking pin mounting hole 38 and is formed in a cylindrical shape having the same outer shape from the base end to the tip end 39Aa and in the flange shape formed at the base end of the shaft portion 39A. It has a base 39 </ b> B that has a larger diameter than the locking pin mounting hole 38.

  In this locking pin 39, the shaft portion 39A passes through the locking pin mounting hole 38, and the base portion 39B is sandwiched between the flat portion 36D of the door impact beam 36 and the flat portion 37D of the rear beam bracket 37, and the rear beam. It is fixed to the flat part 37D of the bracket 37. The locking pin 39 fixed to the flat portion 37D extends from the door body 31 in the vehicle width direction in the door closed state and extends from the door main body 31, and the shaft portion 39A is attached to the flat portion 33D of the door inner panel 33. The door stopper 35 has a gap between the inner peripheral surface of the inner hole 35c of the door stopper 35 and the outer peripheral surface of the shaft portion 39A, and a gap L2 between the tip 39Aa and the bottom portion 35d. It is inserted into the hole 35c. Further, when the door is closed, the catcher 16 provided on the shaft portion 39A of the locking pin 39 and the flat portion 11D of the body outer panel 11 is set to overlap in the vehicle width direction, so-called lap L3.

  The shaft portion 39A of the locking pin 39 is covered with the door stopper 35 to ensure the appearance when the door is opened, and the locking pin 39 and the door stopper 35 are disposed in the same portion of the door body 31. Occupying space, in other words, a reduction in arrangement space can be obtained, and a degree of freedom in vehicle body design can be secured.

  Next, the operation of the vehicle body side part structure configured as described above will be described.

  During the door closing operation for closing the rear side door 30 whose front part of the door body 31 is supported by the center pillar 6 by a hinge so as to be opened and closed, the door body 31 is disposed on the flat portion 33D of the door inner panel 33 of the door body 31. The top portion 35a of the door stopper 35 enters the flat portion 11D of the body outer panel 11 forming the door opening portion 8 of the vehicle body 1 and enters the flat portion 11D of the reinforcement 14 through the grommet 18 through the grommet 18. The door body 31 is held in the door closed state by the door lock mechanism.

  At this time, the door stopper 35 with which the top portion 35a contacts the flat portion 14D of the reinforcement 14 with the grommet 18 interposed therebetween is a gap between the outer peripheral surface of the shaft portion 39A of the locking pin 39 and the inner peripheral surface of the inner hole 35c. In addition, the elastic deformation of the door stopper 35 is allowed by the gap between the tip 39Aa and the bottom portion 35d without being restrained by the locking pin 39, and the impact caused by the door closing operation can be reduced. Moreover, the vibration etc. of the door main body 31 hold | maintained in a closed state by a door lock mechanism with the elastic deformation of the door stopper 35 are suppressed, and the stable door closed state can be ensured.

  On the other hand, when the rear side door 30 is opened, the opening 34 opened to the body outer panel 11 is closed by the grommet 18 to ensure the appearance quality.

  When an impact load P1 is applied to the door body 31 of the rear side door 30 from the outside due to, for example, a side collision in the door closed state, the impact load P1 is transmitted to the door impact beam 36 via the door outer panel 32, and the door impact A part of the impact load P1 dispersed by the beam 36 is transmitted to the center pillar 6 through a front beam bracket and a hinge coupled to the tip of the door impact beam 36.

  On the other hand, the locking pin 39 is pressed toward the vehicle interior through the flat portion 36D formed in the rear end portion 36a of the door impact beam 36 by the remaining dispersed impact load P1, and the inside of the inner hole 35c of the door stopper 35. The tip 39Aa comes into pressure contact with the flat portion 14D of the reinforcement 14 via the door stopper 35 and the grommet 18, and the flat portion of the reinforcement 14 through the engagement pin 39 from the flat portion 36D of the door impact beam 36. The load is transmitted to 14D. Along with the deformation of the reinforcement 14 due to the load transmission of the flat portion 14D, the contact portion 15C of the load transmitting member 15 contacts the flat portion 13D of the body inner panel 13 and the load transmission system from the flat portion 14D side to the flat portion 13D side. A path is formed. Thereby, the impact load from the locking pin 39 is efficiently transmitted to the body inner panel 13, the body outer panel 11 and the floor panel 9 via the reinforcement 14 and the load transmitting member 15, and the side sill 2, the rear pillar 5 and the floor panel are transmitted. The load is transmitted in a wide range such as 9.

  When an excessive impact load P1 is applied to the door body 31 from the outside, the load is transmitted from the door outer panel 11 to the door impact beam 16 in the same manner as described above, and from the front portion of the door impact beam 36 through the front beam bracket and the hinge. Is transmitted to the center pillar 6, and the load is transmitted from the flat portion 36 </ b> D of the door impact beam 36 to the reinforcement 14 on the side of the vehicle body 1 through the locking pin 39, and the side sill 2, the rear pillar 5, the floor panel 9, and the like. It is diffused to the load and transmitted.

  Furthermore, when the door impact beam 36 is deformed by the excessive impact load P1 and the middle portion of the door main body 31 is bent toward the vehicle interior, the door impact beam 36 is bent into the middle. Accordingly, when the rear end portion 36a moves forward, the locking pin 39 disposed on the rear end side 37C of the rear beam bracket 37 coupled to the flat portion 36D of the door impact beam 36 moves forward, and is locked. The shaft portion 39A of the pin 39 is in contact with the locking member 17 of the catcher 16 fixed to the reinforcement 14 on the vehicle body 1 side with the door stopper 35 interposed therebetween, so that the flat portion 36D of the door impact beam 36, that is, the rear end. The forward movement of the portion 36 a is restricted, and the middle deformation of the door impact beam 36 is suppressed. With the suppression of the bending deformation of the door impact beam 36, the bending deformation of the door main body 31 is suppressed, and the door main body 31 can be prevented from entering the vehicle interior.

  On the other hand, when an impact load P2 from the rear of the vehicle body is applied due to a rear-end collision or the like in the door closed state of the rear door 30, even if the body outer panel 11 or the body inner panel 13 is deformed by the deformation of the rear portion of the vehicle body due to the impact load P2. The shaft portion 39A of the locking pin 39 disposed at the rear portion of the door body 31 of the rear side door 30 and extending inward in the vehicle width direction has the same outer shape, that is, the same diameter from the base end to the tip end. The locking member 17 of the catch 16 disposed on the flat portion 14D of the reinforcement 14 is cylindrical and extends between the inner peripheral surface and the shaft portion 39A of the locking pin 39. Therefore, the catcher 16 is prevented from engaging with the shaft portion 39A of the locking pin 39. In other words, there is no possibility that the shaft portion 39A of the locking pin 39 is restrained by the catch 16, and the shaft portion 39A of the locking pin 39 is moved outward from the catcher 16 by opening the door body 31 in the closed state. The door body 31 can be easily opened and the rear door 30 can be opened.

  Further, when an impact load P2 from the rear of the vehicle body is applied due to the rear-end collision or the like, the body outer panel 11, the body inner panel 13 and the like are deformed by the deformation of the rear of the vehicle body due to the impact load P2, and the shaft portion 39A of the locking pin 39 is deformed. Even in the state where the locking member 17 of the catcher 16 is in contact, the shaft portion 39A of the locking pin 39 has a cylindrical shape that continues from the proximal end to the distal end with the same outer shape, and the catcher 16 is engaged. This prevents the shaft 39A of the locking pin 39 from being restrained by the catch 16, and the shaft 39A of the locking pin 39 is moved outward in the vehicle width direction from the catcher 16 by opening the door body 31 in the closed state. The door body 31 can be opened easily and the rear door 30 can be opened.

  Therefore, according to the present embodiment, when the impact load from the outside acts on the door body 31, it effectively prevents the door body 31 from entering the vehicle compartment, and when the impact load acts from the rear. The door opening property of the door body 31 can be ensured, and the safety can be improved so that the influence on the occupant can be avoided or reduced.

(Second Embodiment)
An embodiment of a vehicle body side part structure according to the present invention will be described with reference to FIGS. 5 to 9 by taking the case where the side door is a rear door as an example. 5 to 9, the same reference numerals are given to the portions corresponding to those in FIGS. 1 to 4, and the detailed description thereof will be omitted.

  5 is a side view of an automobile to which the vehicle body side part structure in the present embodiment is applied, FIG. 6 is a sectional view taken along line III-III in FIG. 5, FIG. 7 is a sectional view taken along line IV-IV in FIG. Is a cross-sectional view taken along line VV in FIG. 6, and FIG. 9 is a cross-sectional view taken along line VI-VI in FIG.

  The left and right sides of the vehicle body 1 are provided with a side sill 2 formed in a hollow shape, a side rail 3, a front pillar 4, a rear pillar 5, and a center pillar 6, and between the front pillar 4 and the center pillar 6. The center pillar 6 and the rear pillar 5 are respectively formed with a door opening 7 for the front side door and a door opening 8 for the rear side door.

  As shown in FIG. 6, the rear edge portion of the door opening 8 formed by the rear pillar 5 is constituted by a vehicle body constituting member including a body outer panel 11, a body inner panel 13, and a reinforcement 14.

  The body outer panel 11 is inclined so as to gradually move toward the vehicle interior as it moves forward from the fender portion 11A and the front end of the fender portion 11A toward the vehicle body front via the bent portion 11B bent inward in the vehicle width direction, that is, toward the vehicle interior. Part 11C, a flat part 11D serving as a catcher mounting part extending forward of the vehicle body from the front end of the inclined part 11C, a front part 11E bent in the vehicle interior from the front end of the flat part 11D and extending in the vehicle width direction, the front surface An end portion 11F that bends forward from the inner end of the portion 11E to the front of the vehicle body is formed in a continuous step shape. A circular opening 12 is formed in the flat portion 11D.

  In the body inner panel 13, the end edge 13Da of the flat portion 13D is coupled to the end edge 11Fa of the end portion 11F of the body outer panel 11. The body outer panel 11 and the body inner panel 13 that are coupled to each other form a hollow portion having excellent rigidity that is continuous vertically along the rear edge of the door opening 8.

  The reinforcement 14 includes a flat portion 14D that faces the flat portion 11D of the body outer panel 11, a front portion 14E that is bent inward from the front end of the flat portion 14D and extends in the vehicle width direction, and an inward direction of the front portion 14E. End portion 14F that bends forward from the end of the vehicle body, rear surface portion 14G that extends from the rear end of flat portion 11D toward the vehicle interior and extends in the vehicle width direction, and folds backward from the inner end of rear surface portion 14G to the rear of the vehicle body It is formed in a cross-sectional hat shape having a bent end portion 14H, and the end portion 14F and the end portion 14H are coupled to the flat portion 13D of the body inner panel 13.

  A catcher 16 having a cylindrical locking member 17 that protrudes outward in the vehicle width direction is disposed on the flat portion 14D of the reinforcement 14 so as to face the flat portion 11D of the body outer panel 11. The catching member 17 of the catcher 16 has a cylindrical shape having an inner diameter slightly larger than the diameter of the opening 12 that opens to the opposed flat portion 11D, and has an axial core on the same axis as the opening 12. The end 17a is welded and fixed to the flat portion 14D, and there is a gap between the tip 17b and the flat portion 14D.

  An elastic member, for example, a rubber-made bottomed cylindrical grommet 40 is arranged to improve the appearance by closing the opening 12 in the opening 12 of the body outer panel 11 and to prevent foreign matters such as dust from entering from the opening 12. It is installed. The grommet 40 is a bottomed cylindrical shape having a cylindrical tube portion 40A and a bottom portion 40B that closes the distal end of the tube portion 40A, and has an annular shape that fits to the periphery of the opening 12 on the outer periphery of the proximal end of the tube portion 40A. A mounting portion 40C is formed.

  The grommet 40 configured in this manner is attached to the flat portion 11D of the body outer panel 11 with the mounting portion 40C fitted to the periphery of the opening 12, and the bottom portion 40B is in a state of being close to the flat portion 14D of the reinforcement 14. Can be maintained.

  On the other hand, the rear side door 30 can be opened and closed freely by two upper and lower hinges (not shown) installed between the door body 31 and the center pillar 6 having excellent rigidity and strength that constitutes the front edge of the door opening 8. The portion is supported and held in a closed state by a door lock mechanism (not shown) provided near the rear end.

  The door body 31 includes a door outer panel 32 and a door inner panel 33. The door inner panel 33 is folded outward along the front edge, the lower edge, and the rear edge of the substantially planar inner side surface portion 33A on the vehicle compartment side. The door outer panel 32 is bent and joined to the front edge, the lower edge, and the rear edge of the door outer panel 32. The upper portion of the door outer panel 32 is curved in the direction of the passenger compartment to form a door shoulder, and a flange 32a bent upward is formed. The seal | sticker 42 which is slidably contacted to the window glass 43 which goes up and down to the flange 32a is provided.

  As shown in FIG. 6, the door inner panel 33 includes a rear surface portion 33 </ b> C extending from the rear end of the inner side surface portion 33 </ b> A facing the door outer panel 32 to the door outer panel 32 side via the bent portion 33 </ b> B, and an outer side of the rear surface portion 33 </ b> C. A flat surface 33D that bends from the end and extends to face the door outer panel 32, and an inclination that gradually approaches the door outer panel 32 as it bends from the rear end of the flat surface 33D to the door outer panel 32 and moves backward. And the edge of the inclined portion 33E is coupled to the edge of the door outer panel 32.

  In the closed state of the door main body 31, the rear end portion, the rear surface portion 33C, the flat portion 33D, and the inclined portion 33E of the inner side surface portion 33A of the door inner panel 33 are the end portion 11F, the front surface portion 11E, and the flat portion 11D of the body outer panel 11, respectively. It faces the inclined portion 11C with a gap. Further, a locking pin through hole 34 is formed in the flat portion 33D of the door inner panel 33 corresponding to the opening 12 formed in the flat portion 11D of the body outer panel 11.

  The flat portion of the body outer panel 11 is inserted into the locking pin through hole 34 opened in the flat portion 33D with a gap between the door body 31 and the inner peripheral surface 40a of the grommet 40 with the grommet 18 interposed. An elastic member with which the top portion 35a abuts on 11D, for example, a rubber door stopper 35 is disposed. The door stopper 35 has a bottomed cylindrical shape in which an inner hole 35c having an outer peripheral surface 35b and a bottom portion 35d is formed, and a slit-like engaging portion 35e formed in an annular shape on the outer peripheral surface 35b has a locking pin through hole. It is attached to the flat portion 33D of the door inner panel 33 by being fitted to the peripheral edge of the door 34.

  In the space S of the door main body 31 formed by the door outer panel 32 and the door inner panel 33, the inside of the door impact beam 46 and the door outer panel 33 having a hollow cross-sectional shape extending in the front-rear direction along the inside of the door outer panel 32. An inner panel reinforcement 50 extending in the front-rear direction and extending from the inner side surface portion 33A to the front portion range 33Da of the flat portion 33D is disposed.

  The door impact beam 46 is planar and has an upper edge 47a joined to the flange 32a of the door outer panel 32 so as to extend in the front-rear direction along the door shoulder, and along the inner surface of the door outer panel 32. Flanges 48Ba and 48Ca are provided at the edges of the upper surface portion 48B, the lower surface portion 48C, the upper surface portion 48B, and the lower surface portion 48C that are bent inward from the upper edge and the lower edge of the top portion 48A extending along the front-rear direction. The second reinforcement 48 having a hat-shaped cross section formed by bending, and flanges 48Ba and 48Ca are joined to the side surface of the first reinforcement 47 so that the first reinforcement 47 and the second reinforcement 48 are hollow. Is formed.

  The front end of the door impact beam 46 is coupled to the vicinity of the front end of the door inner panel 33 in the vicinity of the hinge. On the other hand, the rear end portion 46a of the door impact beam 46 has a flat portion 46D in which the rear portions of the first reinforcement 47 and the second reinforcement 48 are formed in a flat plate shape and joined to each other, and the door inner panel 33 is flat. It is coupled to the rear range 33Db of the part 33D.

  A locking pin mounting hole 49 is drilled in the flat portion 46 </ b> D of the door impact beam 46, and the locking pin 39 is mounted in the locking pin mounting hole 49. The locking pin 39 has a cylindrical shaft portion 39A that can pass through the locking pin mounting hole 49 and a flange 39 formed at the base end of the shaft portion 39A, and has a base portion 39B that has a larger diameter than the locking pin mounting hole 49. have.

  The locking pin 39 has a shaft portion 39A passing through the locking pin mounting hole 49 and a base portion 49B welded to the flat portion 46D of the door impact beam 46. The locking pin 39 fixed to the flat portion 46D extends inward in the vehicle width direction when the door is closed, and the shaft portion 39A of the door stopper 35 attached to the flat portion 33D of the door inner panel 33 is provided. Inserted into the inner hole 35c of the door stopper 35 with a gap between the inner peripheral surface of the inner hole 35c and the outer peripheral surface of the shaft portion 39A and with a gap between the tip 39Aa and the bottom portion 35d. Is done. Further, in the door closed state, it is set so as to overlap, so-called wrapping, in the vehicle width direction with respect to the locking member 17 of the catcher 16 provided on the shaft portion 39A of the locking pin 39 and the flat portion 11D of the body outer panel 11. Yes.

  Next, the operation of the vehicle body side part structure configured as described above will be described.

  During the door closing operation for closing the rear side door 30 whose front part of the door body 31 is supported by the center pillar 6 by a hinge so as to be opened and closed, the door body 31 is disposed on the flat portion 33D of the door inner panel 33 of the door body 31. From the state in which the top portion 35a of the door stopper 35 enters from the opening portion 12 that opens to the flat portion 11D of the body outer panel 11 that forms the door opening portion 8 of the vehicle body 1, and the bottom portion 48B of the grommet 40 is indicated by a phantom line. The door body 31 is held in the door closed state by the door lock mechanism while being deformed as shown in FIG.

  At this time, the door stopper 35 with which the top portion 35a contacts the flat portion 14D of the reinforcement 14 through the bottom portion 40B of the grommet 40 is formed between the outer peripheral surface of the shaft portion 39A of the locking pin 39 and the inner peripheral surface of the inner hole 25c. Due to the gap between them and the gap formed between the tip 39Aa and the bottom 35d, the door stopper 35 is allowed to be elastically deformed and the impact caused by the door closing operation can be reduced. Moreover, the vibration etc. of the door main body 31 hold | maintained in a closed state by a door lock mechanism with the elastic deformation of the door stopper 35 are suppressed, and the stable door closed state can be ensured.

  On the other hand, in the door open state in which the rear side door 30 is opened, the opening 12 that opens to the body outer panel 11 is closed by the grommet 40 to ensure the appearance quality.

  In the door closed state, for example, when an impact load P1 is applied to the door body 31 of the rear side door 30 from the outside due to a side collision or the like, the impact load P1 is transmitted to the door impact beam 46 via the door outer panel 32, A part of the impact load P1 distributed by the impact beam 46 is transmitted from the front end of the door impact beam 46 to the center pillar 6 through the hinge.

  On the other hand, the locking pin 39 is pressed toward the vehicle interior via the flat portion 36D of the rear end portion 36a of the door impact beam 36 by the remaining dispersed impact load P1, and enters the inner hole 35c of the door stopper 35. The front end 39Aa is pressed against the flat portion 14D of the reinforcement 14 via the door stopper 35 and the grommet 40, and is moved from the rear end portion 36a of the door impact beam 36 to the flat portion 14D of the reinforcement 14 via the locking pin 39. Load is transmitted. Thereby, the impact load from the locking pin 39 is efficiently transmitted to the body inner panel 13 and the body outer panel 11 through the reinforcement 14, and is diffused and transmitted to the rear pillar 5 and the like.

  When an excessive impact load P1 is applied to the door body 31 from the outside, the load is transmitted from the door outer panel 11 to the door impact beam 46 in the same manner as described above, and the center pillar 6 is connected from the front portion of the door impact beam 36 via the hinge. In addition, the load is transmitted from the flat portion 46D of the door impact beam 46 to the reinforcement 14 on the vehicle body 1 side through the locking pin 39 and the like, and is diffused and transmitted to the rear pillar 5 and the like. Further, when the door impact beam 46 is deformed by the excessive impact load P1 and the middle portion of the door main body 31 is bent toward the vehicle interior, the door impact beam 46 is bent into the middle. Accordingly, when the flat portion 46D moves forward, the locking pin 39 disposed on the flat portion 46D moves forward, and the shaft portion 39A of the locking pin 39 contacts the locking member 17 via the door stopper 35. The forward movement of the rear end portion 46b of the door impact beam 46 is restricted, and the bending deformation of the door impact beam 46 is suppressed. As the door impact beam 46 is prevented from being bent and bent, the door body 31 is prevented from being bent and the door body 31 can be prevented from entering the vehicle interior.

  On the other hand, when an impact load P2 from the rear of the vehicle body is applied due to a rear-end collision or the like in the door closed state of the rear door 30, even if the body outer panel 11 or the body inner panel 13 is deformed by the deformation of the rear portion of the vehicle body due to the impact load P2. The shaft portion 39A of the locking pin 39 disposed in the rear portion of the door body 31 of the rear side door 30 and extending in the vehicle width direction has a cylindrical shape with the same diameter from the proximal end to the distal end. Since the locking member 17 of the catch 16 disposed in the flat portion 14D has a cylindrical shape extending in the vehicle width direction and has a gap between the inner peripheral surface and the shaft portion 39A of the locking pin 39, The engagement of the shaft portion 39A of the pin 39 and the catcher 16 is prevented. In other words, there is no possibility that the shaft portion 39A of the locking pin 39 is restrained by the catch 16, and the shaft portion 39A of the locking pin 39 is moved outward from the catcher 16 by opening the door body 31 in the closed state. The door body 31 can be easily opened and the rear door 30 can be opened.

  Therefore, according to the present embodiment, when the impact load from the outside acts on the door body 31, it effectively prevents the door body 31 from entering the vehicle compartment, and when the impact load acts from the rear. The door opening property of the door body 31 can be ensured, and the safety can be improved so that the influence on the occupant can be avoided or reduced.

(Third embodiment)
An embodiment of a vehicle body side structure according to the present invention will be described with reference to FIGS. 10 to 14 by taking the case where the side door is a rear door as an example. 5 to FIG. 9, the same reference numerals are given to the portions corresponding to those in FIG. 5 to FIG. 9, and the detailed description thereof will be omitted.

  10 is a side view of an automobile to which the vehicle body side part structure in the present embodiment is applied, FIG. 11 is a sectional view taken along line VII-VII in FIG. 10, FIG. 12 is a sectional view taken along line VIII-VIII in FIG. Is a cross-sectional view taken along line IX-IX in FIG. 11, and FIG. 14 is a cross-sectional view taken along line XX in FIG.

  The left and right sides of the vehicle body 1 are provided with side sills 2, side rails 3, front pillars 4, rear pillars 5 and center pillars 6, respectively, between the front pillars 4 and the center pillars 6, and to the center pillars 6 and the rear pillars 5, respectively. A door opening 7 for the side door and a door opening 8 for the rear side door are formed.

  The rear edge portion of the door opening 8 formed by the rear pillar 5 and the grommet 40 are the same as those in the second embodiment, and the same reference numerals are given to omit detailed description.

  On the other hand, the rear side door 30 can be opened and closed by two upper and lower hinges (not shown) in which a door body 31 having a door outer panel 32 and a door inner panel 33 is installed between the center pillar 6 constituting the door opening 8. The front portion is supported and held in a closed state by a door lock mechanism (not shown) provided near the rear end. In addition, the door outer panel 32 and the door inner panel 33 of the door main body 31 are the same as those in the second embodiment, and a detailed description thereof will be omitted by attaching the same reference numerals.

  In the space S of the door main body 31 formed by the door outer panel 32 and the door inner panel 33, the inside of the door impact beam 56 having a hollow cross-sectional shape extending in the front-rear direction along the inside of the door outer panel 32 and the inside of the door outer panel 33. An inner panel reinforcement 50 extending in the front-rear direction and extending from the inner side surface portion 33A to the front region 33Da of the flat portion 33D is disposed.

  The door impact beam 56 is planar and has an upper edge 57a joined to the flange 32a of the door outer panel 32 so as to extend in the front-rear direction along the door shoulder, and in the front area 33Da of the flat portion 33D of the door inner panel 33. Correspondingly, the first reinforcement 57 formed with the joint portion 57a and the upper edge and the lower edge of the top portion 58A extending in the front-rear direction along the inner surface of the door inner panel 33 are bent inward. The upper surface 58B, the lower surface 58C, and the upper surface 58B and the lower surface 58C have flanges 58Ba and 58Ca that are bent at the end edges of the upper surface 58B and the lower surface 58C. 58Ba and 58Ca are joined to the side surface of the first reinforcement 57 and formed into a hollow shape by the first reinforcement 57 and the second reinforcement 58. . A service hole 58Aa is formed in the top portion 58A of the second reinforcement 58 so as to face the front area 33Da of the flat portion 33D formed on the door inner panel 33.

  On the other hand, the rear end portion 56a of the door impact beam 56 has a flat portion 56D in which the rear range of the first reinforcement 57 and the second reinforcement 58 is formed in a flat plate shape and joined to each other, and is locked to the flat portion 56D. A pin mounting hole 49 is drilled, and the locking pin 39 is mounted in the locking pin mounting hole 49. The shaft pin 39 </ b> A penetrates the locking pin mounting hole 49 and the base portion 39 </ b> B is welded to the flat portion 56 </ b> D of the door impact beam 56.

  The door impact beam 56 is attached and supported in the vicinity of the front end of the door inner panel 33 in the vicinity of the hinge at the front end of the door impact beam 56, and the joint portion 57 a formed in the first reinforcement 57 together with the rear end portion of the inner panel reinforcement 50. The door inner panel 33 is welded to the front area 33Da of the flat portion 33D. In this welding, the welding tip 61a inserted from the service hole 58Aa drilled in the second reinforcement 58 shown by the phantom line in FIG. 10 and the welding tip pressurized from the front range 33Da side of the flat portion 33D of the door inner panel 33 are used. It is easily welded by the welding device 61 provided with 61b.

  The shaft portion 39A of the locking pin 39 fixed to the flat portion 56D extends in the vehicle width direction when the door is closed, and the shaft portion 39A is the door stopper 35 attached to the flat portion 23D of the door inner panel 33. Inserted into the inner hole 35c of the door stopper 35 with a gap between the inner peripheral surface of the inner hole 35c and the outer peripheral surface of the shaft portion 39A and with a gap between the tip 39Aa and the bottom portion 35d. Is done. Further, in the door closed state, it is set so as to overlap in the vehicle width direction, so-called wrapping, with respect to the locking member 17 of the catcher 16 provided on the shaft portion 39A of the engaging pin 39 and the flat portion 11D of the body outer panel 11. Yes.

  Next, the operation of the vehicle body side part structure configured as described above will be described.

  During the door closing operation for closing the rear side door 30 whose front part of the door body 31 is supported by the center pillar 6 by a hinge so as to be opened and closed, the door body 31 is disposed on the flat portion 33D of the door inner panel 33 of the door body 31. The top portion 35a of the door stopper 35 enters from the opening portion 12 that opens to the flat portion 11D of the body outer panel 11, and the bottom portion 48B of the grommet 40 is deformed from the state indicated by the phantom line as indicated by the solid line, and the bottom portion 40B is changed. The door body 21 is held in contact with the flat portion 14D of the reinforcement 14 and is held closed by the door lock mechanism. On the other hand, in the door open state in which the rear side door 30 is opened, the opening 34 opened to the body outer panel 11 is closed by the grommet 40 to ensure the appearance quality.

  In the door closed state, for example, when an impact load P1 is applied to the door body 31 of the rear side door 30 from the outside due to a side collision or the like, the impact load P1 is transmitted to the door impact beam 56 via the door outer panel 32, A part of the impact load P1 dispersed by the impact beam 56 is transmitted from the front end of the door impact beam 56 to the center pillar 6 via the hinge.

  On the other hand, the locking pin 39 is pressed toward the vehicle interior via the flat portion 56D of the door impact beam 56 by the remaining dispersed impact load P1, and enters the inner hole 35c of the door stopper 35, so that the tip 39Aa becomes the door. The stopper 35 and the bottom portion 40B of the grommet 40 are pressed against the flat portion 14D of the reinforcement 14 and the load is transmitted from the flat portion 56D of the door impact beam 56 to the flat portion 14D of the reinforcement 14 via the locking pin 39. The Thereby, the impact load from the locking pin 39 is efficiently transmitted to the body inner panel 13 and the body outer panel 11 through the reinforcement 14, and is diffused and transmitted to the rear pillar 5 and the like.

  When an excessive impact load P1 is applied to the door body 31 from the outside, the load is transmitted from the door outer panel 11 to the door impact beam 56 in the same manner as described above, and the center pillar 6 is connected from the front portion of the door impact beam 56 via the hinge. In addition, the load is transmitted from the flat portion 56D of the door impact beam 56 to the reinforcement 14 on the vehicle body 1 side through the locking pin 39 and the like, and is diffused and transmitted to the rear pillar 5 and the like. Furthermore, when the door impact beam 56 is deformed by the excessive impact load P1 and the middle portion of the door body 31 is bent toward the vehicle interior, the door impact beam 56 is deformed in the middle. Accordingly, when the flat portion 56D moves forward, the locking pin 39 moves forward, and the shaft portion 39A of the locking pin 39 abuts on the locking member 17 of the catcher 16 with the door stopper 35 interposed therebetween. The forward movement of the rear end portion 56b in which the flat portion 56D of the 56 is formed is restricted, and the middle deformation of the door impact beam 56 is suppressed. As the door impact beam 56 is prevented from being bent and deformed, the door body 31 is prevented from being bent and the door body 31 can be prevented from entering the vehicle interior.

  On the other hand, when an impact load P2 from the rear of the vehicle body is applied due to a rear-end collision or the like in the door closed state of the rear door 30, even if the body outer panel 11 or the body inner panel 13 is deformed by the deformation of the rear portion of the vehicle body due to the impact load P2. The shaft portion 39A of the locking pin 39 disposed in the rear portion of the door body 31 of the rear side door 30 and extending in the vehicle width direction has a cylindrical shape with the same diameter from the proximal end to the distal end. Since the locking member 17 of the catch 16 disposed in the flat portion 14D has a cylindrical shape extending in the vehicle width direction and has a gap between the inner peripheral surface and the shaft portion 39A of the engaging pin 39, the locking member 17 The engagement of the shaft portion 39A of the pin 39 and the catcher 16 is prevented, and the shaft portion 39A of the locking pin 39 is moved outwardly in the vehicle width direction from the catcher 16 by opening the door body 31 in the closed state. To escape, open door of the rear door 30 to allow opening of the door body 31 can be secured.

  Therefore, according to the present embodiment, when the impact load from the outside acts on the door body 31, it effectively prevents the door body 31 from entering the vehicle compartment, and when the impact load acts from the rear. The door opening property of the door body 31 can be ensured, and the safety can be improved so that the influence on the occupant can be avoided or reduced.

  Further, since the door impact beam 56 is coupled to the front region 33Db of the flat portion 33D of the door inner panel 33, the rear end of the door impact beam is coupled to the rear region of the flat portion 33D of the door inner panel 33. Compared to this form, the door impact beam can be shortened and weight reduction can be expected.

  The present invention is not limited to the first to third embodiments, and can be variously modified without departing from the spirit of the invention. For example, in each of the above embodiments, the shaft portion 39A of the locking pin 39 extends from the base end on the base portion 39B side to the tip end 39Aa, but the shaft portion 39A moves from the base end to the tip end 39Aa. A so-called tapered shape, in which the outer shape gradually decreases as the time elapses, can also be obtained. In the first to third embodiments, the catcher locking member is cylindrical. However, the locking member is not limited to the cylindrical shape, and may be formed in another cylindrical shape such as a rectangle. Furthermore, although the case where the side door is a rear side door has been described as an example in the first to third embodiments, the present invention can also be applied to a front side door.

1 is a side view of an automobile to which a vehicle body side part structure according to a first embodiment of the present invention is applied. It is the II sectional view taken on the line of FIG. It is the A section enlarged view of FIG. It is the II-II sectional view taken on the line of FIG. It is a side view of the motor vehicle to which the vehicle body side part structure in 2nd Embodiment of this invention is applied. It is the III-III sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is the VV sectional view taken on the line of FIG. It is the VI-VI sectional view taken on the line of FIG. It is a side view of the motor vehicle to which the vehicle body side part structure in 3rd Embodiment of this invention is applied. It is the VII-VII sectional view taken on the line of FIG. It is the VIII-VIII sectional view taken on the line of FIG. It is the IX-IX sectional view taken on the line of FIG. It is the XX sectional view taken on the line of FIG. It is a side view of the motor vehicle to which the conventional vehicle body side part structure is applied. It is the XI-XI sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 2 Side sill 3 Side rail 4 Front pillar 5 Rear pillar 6 Center pillar 7, 8 Door opening part 11 Body outer panel 12 Opening part 13 Body inner panel 14 Reinforce 14D Flat part (catcher attaching part)
15 Load transmission member 16 Catcher 17 Locking member 17a Base end 17b Tip 17c Bottom 18 Grommet 30 Rear side door 31 Door body 32 Door outer panel 33 Door inner panel 34 Locking pin through hole 35 Door stopper 35a Top 35c Inner hole 35d Bottom 36 Side Door impact beam 36a Rear end portion 37 Rear beam bracket 38 Locking pin mounting hole 39 Locking pin 39A Shaft portion 39B Base 40 Grommet 50 Inner panel reinforcement 46 Door impact beam 49 Locking pin mounting hole 56 Door impact beam

Claims (5)

Vehicle body configuration in which the front part of the door body, which is formed by opposingly arranging the door inner panel on the vehicle interior side and the door outer panel on the vehicle body outer side and connecting the peripheral edges to each other, constitutes the front edge part of the door opening formed in the vehicle body body A side door provided with a hinge on the member so that it can be opened and closed and provided with a locking pin at the rear part of the door body. In the vehicle body side structure provided with the catcher that can be engaged with the locking pin in
The locking pin includes a base portion fixed to the door main body in the rear portion of the door main body and a shaft portion extending from the base portion inward in the vehicle width direction with the same outer shape or taper shape and protruding from the door main body. ,
The catcher is disposed in a vehicle body member constituting a rear edge portion of the door opening, extends in the vehicle width direction, and has a cylindrical shape with an outer end in the vehicle width direction opened. The vehicle body side part structure characterized by comprising a locking member that can be inserted with a gap. The vehicle body member constituting the rear edge of the door opening is
A body outer panel on the outside of the vehicle body in which an opening into which the shaft portion of the locking pin is inserted in the door closed state is formed;
A body inner panel that is coupled to the body outer panel and is disposed opposite to the vehicle interior side;
A catcher mounting portion disposed between the body outer panel and the body inner panel and facing the opening at a distance from the body outer panel, and a reinforcement coupled to the body inner panel;
2. The vehicle body side structure according to claim 1, wherein a locking member having an outer end in the vehicle width direction is coupled to a catcher mounting portion of the reinforcement corresponding to the opening. .   The mounting portion is fitted to the periphery of the opening of the body outer panel, and the shaft portion of the locking pin has a gap and has an inner diameter that can be inserted, and the bottom portion contacts the catcher mounting portion of the reinforcement. The vehicle body side part structure according to claim 2, further comprising a grommet that contacts the grommet.   A door impact beam extending in the front-rear direction in the door body is provided, a base portion of the locking pin is fixed to a rear end portion of the door impact beam, and a shaft portion of the locking pin is the door inner panel The vehicle body side part structure according to any one of claims 1 to 3, wherein the vehicle body side part structure extends inward in the vehicle width direction through a locking pin through-hole that opens in the vehicle.   A bottomed cylinder in which a locking pin through hole through which the shaft portion of the locking pin passes is opened in the door inner panel, and the shaft portion of the locking pin can be inserted into the locking pin through hole of the door inner panel. The vehicle body side part structure according to any one of claims 1 to 3, wherein a door stopper made of an elastic member whose top is in contact with the vehicle body constituent member in a closed state is disposed.

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