JP5380520B2 - slide door - Google Patents

Description

  The present invention relates to an automobile sliding door.

Some automobile sliding doors are locked at three locations.
This sliding door has an upper front locking mechanism at the upper part of the front end provided with the door opening / closing handle, a lower front locking mechanism at the lower part, and a middle rear locking mechanism at the center of the rear end of the sliding door. The coupling force when pushed outward is increased (see, for example, Patent Document 1).
Some door inner waist reinforcements are provided inside the door along the belt line of the door, door inner reinforcements are provided inside the front end of the door, and are coupled to the door inner waist reinforcement (for example, , See Patent Document 2).

  However, since the prior art (Patent Document 1) supports the upper part, the lower part, and the center of the rear end of the sliding door, it is locked when the sliding door is pushed from the inside of the vehicle by a passenger at the time of collision. There is a possibility that the entire slide door excluding the three places that are not pushed will be pushed out of the vehicle, the gap between the door opening and the slide door will widen, and the inside of the vehicle will jump out of the vehicle. is there.

  Further, as shown in Patent Document 2, a window frame reinforcing member is provided so that the base of the window frame portion coupled to the door body is not bent when the sliding door is used in a normal state. In addition, by adopting a structure that reinforces by providing a reinforcing member along the belt line and a reinforcing member that attaches a latch mechanism that locks the sliding door in the vicinity of the base, the center of the sliding door and the door other than the sliding door Since the strength at the center is large, it is difficult to bend and deform the center of the sliding door by bending it outward when the occupant pushes the sliding door out of the passenger compartment.

Japanese Examined Patent Publication No. 3-65469 Japanese Patent No. 3835262

  In the present invention, when an occupant pushes the slide door from the vehicle interior at the time of a vehicle collision, the center of the slide door is bent outward to bend and deform to prevent things from jumping out of the vehicle from the vehicle interior. It is an object to provide a sliding door.

  In order to solve the above-described problems, the invention according to claim 1 is directed to a sliding door including a door main body portion, a window frame portion, a door inner panel and a window frame reinforcing member attached to the window frame portion, and a belt line. A belt line reinforcing member attached to the door inner panel along the section, a latch member provided at the center of one end of the sliding door and locked to the vehicle body as necessary, and a latch member are attached to the door inner panel. A latch reinforcing member, a first coupling mechanism provided at a first corner where the other end of the sliding door and the upper end of the sliding door intersect, and slidably supported on the vehicle body; and the other end of the sliding door; A second connecting mechanism provided at a second corner portion intersecting with the lower end of the sliding door and slidably supported on the vehicle body, and the belt line reinforcing member is spaced upward from the latch reinforcing member. The belt line reinforcing member is connected to the latch reinforcing member by the window frame reinforcing member, and the latch reinforcing member and the belt line reinforcing member are formed of a steel plate having a tensile strength larger than that of the window frame reinforcing member. It is characterized by.

  In the invention according to claim 2, the slide door is attached to the door inner panel along the belt line portion, the door body portion, the window frame portion, the door inner panel and the window frame reinforcing member attached to the window frame portion. A belt line reinforcing member, a latch member provided at the center of one end of the slide door and locked to the vehicle body as needed, a latch reinforcing member to which the latch member is attached and attached to the door inner panel, and a slide door A first connecting mechanism provided at a first corner where the other end of the sliding door and the upper end of the sliding door intersect to be slidably supported on the vehicle body, and a second connecting portion where the other end of the sliding door and the lower end of the sliding door intersect. A second connection mechanism provided at the two corners and slidably supported on the vehicle body, the belt line reinforcing member being spaced apart upward from the latch reinforcing member, Rutorain reinforcing member is connected with the window frame reinforcing member, the latch reinforcing member and the beltline reinforcement member, characterized in that the plate thickness is formed of a thick steel plate than the thickness of the window frame reinforcing member.

  According to the third aspect of the present invention, the upper edge of the latch reinforcing member positioned above and the lower edge of the belt line reinforcing member facing the upper edge both extend in the width direction of the sliding door and are formed parallel to each other. It is characterized by being.

  In the invention according to claim 4, the inner edge of the edge of the window frame reinforcing member facing the inside of the sliding door is joined to the upper edge of the latch reinforcing member and the lower edge of the belt line reinforcing member. It is characterized by.

  In the invention according to claim 5, the door inner panel includes a work opening for working with respect to a functional component disposed inside the door main body, and a gap between the belt line reinforcing member and the latch reinforcing member from the edge of the work opening. And a flat part that reaches the folding start point setting part of the door inner panel that overlaps with the space inside and outside of the vehicle.

  The invention according to claim 6 is characterized in that the flat part is formed along the width direction of the door inner panel from the upper edge part located above among the edges of the work opening part.

In the invention according to claim 1, the slide door includes a window frame reinforcing member attached to the door inner panel and the window frame portion, a belt line reinforcing member attached to the door inner panel along the belt line portion, and a sliding door. A latch member provided at the center of one end of the door, a latch reinforcing member attached to the door inner panel by attaching the latch member, a first coupling mechanism provided at the first corner of the upper end of the slide door, A second connecting mechanism provided at the second corner of the lower end, and the belt line reinforcing member is spaced upward from the latch reinforcing member, and the belt line reinforcing member is a window frame reinforcing member. The latch reinforcement member and the beltline reinforcement member are connected to each other so that the tensile strength is greater than the tensile strength of the window frame reinforcement member. When an occupant or baggage comes into contact with the slide door, the slide door begins to bend, starting from the window frame reinforcing member that overlaps and joins between the beltline reinforcing member and the lower latch reinforcing member. . Then, the inside of the sliding door is bent into a valley fold.
As a result, it is possible to suppress the opening of the front and rear edges of the slide door from becoming large, and it is possible to prevent things from jumping out of the vehicle from the vehicle interior.

  In addition, since the beltline reinforcement member and the lower latch reinforcement member provided on the door body are connected by the window frame reinforcement member that overlaps the window frame, it is joined to the door body during normal use other than vehicle collision. It is possible to effectively prevent the bending of the base portion of the window frame portion. Therefore, merchantability can be ensured.

In the invention according to claim 2, the sliding door includes a window frame reinforcing member attached to the door inner panel and the window frame portion, a belt line reinforcing member attached to the door inner panel along the belt line portion, and a sliding door. A latch member provided at the center of one end of the door, a latch reinforcing member attached to the door inner panel by attaching the latch member, a first coupling mechanism provided at the first corner of the upper end of the slide door, A second connecting mechanism provided at the second corner of the lower end, and the belt line reinforcing member is spaced upward from the latch reinforcing member, and the belt line reinforcing member is a window frame reinforcing member. The latch reinforcement member and the belt line reinforcement member that are connected are thicker than the thickness of the window frame reinforcement member. When the abuts the sliding door, the sliding door begins to bend the window frame reinforcing member is bonded overlap them from between the belt line reinforcement member and the lower latch reinforcement member as a starting point. Then, the inside of the sliding door is bent into a valley fold.
As a result, it is possible to suppress the opening of the front and rear edges of the slide door from becoming large, and it is possible to prevent things from jumping out of the vehicle from the vehicle interior.

  In addition, since the beltline reinforcement member and the lower latch reinforcement member provided on the door body are connected by the window frame reinforcement member that overlaps the window frame, it is joined to the door body during normal use other than vehicle collision. It is possible to effectively prevent the bending of the base portion of the window frame portion. Therefore, merchantability can be ensured.

  In the invention according to claim 3, the upper edge of the latch reinforcement member located above and the lower edge of the beltline reinforcement member facing the upper edge both extend in the width direction of the slide door and are formed parallel to each other. Therefore, when a load is input from the passenger compartment, it begins to bend around the window frame reinforcement member between the upper edge of the latch reinforcement member and the lower edge of the beltline reinforcement member, in the direction of the width of the slide door. The inside of the sliding door can be bent into a valley fold so as to form a ridge line along the ridge. As a result, the variation in opening of the front and rear edges of the slide door deformed in this way can be reduced.

  In the invention according to claim 4, of the edges of the window frame reinforcing member, the inner edge toward the inside of the sliding door is joined to the upper edge of the latch reinforcing member and to the lower edge of the belt line reinforcing member. Therefore, the inner edge of the window frame reinforcing member is fixed to the upper edge of the latch reinforcing member and the lower edge of the belt line reinforcing member. As a result, when a load is input from the passenger compartment, the window frame reinforcing member can be bent more reliably between the upper edge of the latch reinforcing member and the lower edge of the belt line reinforcing member. Therefore, there is an advantage that the state after deformation of the sliding door can be easily brought close to the state intended by the designer.

  In the invention according to claim 5, the door inner panel includes a flat portion that reaches from the edge of the work opening portion to a separation portion between the belt line reinforcing member and the latch reinforcing member and a folding start point setting portion that overlaps in the vehicle inside / outside direction. Therefore, when a load is input from the passenger compartment, the flat part that reaches the fold starting point setting part from the edge of the work opening can promote the deformation of bending the inside of the sliding door into a valley fold, and slides more reliably. It can be bent so as to form a ridge line along the width direction of the sliding door from the vicinity of the belt line portion of the door (center portion of the sliding door).

  In the invention which concerns on Claim 6, since the flat part is formed along the width direction of a door inner panel from the upper edge part located above among the edges of a work opening part, it is in the width direction of a slide door. The inner side of the sliding door can be bent into a valley fold from the vicinity of the belt line portion (center portion of the sliding door) more reliably so as to form a ridge line along the ridge line.

It is a side view of the vehicle which employ | adopted the sliding door which concerns on the Example of this invention. It is a side view which shows the assembly | attachment state of the hollow side of the door inner panel which concerns on an Example. It is detail drawing of the center of a door inner panel. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. It is detail drawing explaining the mechanism of a deformation | transformation of the slide door which concerns on an Example. It is a perspective view of the vehicle explaining the deformation mechanism of the slide door concerning an example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to examples.

As shown in FIG. 1, the vehicle 11 employs a sliding door 13 according to the embodiment on a vehicle body 12. Reference numeral 15 denotes a front door.
The vehicle body 12 includes an underbody 21 that forms the floor of the passenger compartment 18, a left side body (not shown) that forms the left and right side walls of the passenger compartment 18, a right side body 22, and a roof 23.

  Here, the front-rear direction of the vehicle 11 is the X-axis direction, the left-right direction or the width direction of the vehicle 11 shown in FIG. 6 is the Y-axis direction, and the vertical direction of the vehicle 11 is the Z-axis direction.

  The side body 22 forms a door opening 25 after the slide door 13 corresponding to the rear seat 24 is attached.

  The slide door 13 is attached to the door opening 25 and slides in the front-rear direction (X-axis direction) of the vehicle 11. Then, the vehicle body 12 is supported by a slide device 27. The slide device 27 includes an upper rail mechanism 28, a lower rail mechanism 31, and a rear center rail mechanism 32. Further, a door outer handle mechanism 34 is provided at the front center 33 of the slide door 13.

The slide device 27 and the door outer handle mechanism 34 are existing ones. The door outer handle mechanism 34 includes a door handle latch mechanism 35 substantially at the front center 33.
The slide door 13 is formed by forming the belt line portion (upper edge) 37 at the center of the vehicle 11 in a side view (viewpoint in FIGS. 1 to 3) substantially horizontally.

Next, the main configuration of the slide door 13 will be described with reference to FIGS.
The sliding door 13 is slidably attached to the door opening 25 of the vehicle body 12 of the vehicle 11, and includes a door body 45 having a closed cross-sectional shape that joins a peripheral edge 42 of the door inner panel 41 and a peripheral edge 44 of the door outer panel 43. A window frame portion 46 having a closed cross-sectional shape provided on the upper side of the door main body portion 45.

  The sliding door 13 is mounted across the door inner panel 41 and the window frame portion 46, and extends along the window frame reinforcing member 47 that overlaps the door outer panel 43 and the belt line portion 37 that forms the upper edge of the door main body portion 45. The belt line reinforcing member 51 is attached to the door inner panel 41 and overlapped with the door outer panel 43, and is disposed in the door main body portion 45, and in the width direction of the slide door 13 (the longitudinal direction of the vehicle 11 (X-axis direction)). A latch member 53 that is provided at the center of the one end 52 in the vertical direction (Z-axis direction) and is locked to the vehicle body 12 as necessary, and a latch member 53 are attached to the door inner panel 41, and the door outer panel 43 is And an overlaid latch reinforcing member 54.

  Further, the slide door 13 is provided at a first corner 57 where the other end 55 of the slide door 13 and the upper end 56 of the slide door 13 intersect with each other, and is slidably supported on the vehicle body 12. The second connecting mechanism 63 is provided at the second corner 62 where the other end 55 of the slide door 13 and the lower end 61 of the slide door 13 intersect, and is slidably supported on the vehicle body 12.

In addition, the sliding door 13 has a belt line reinforcing member 51 spaced from the latch reinforcing member 54 upward (as an example, by a distance B (FIG. 2)). They are connected by a frame reinforcing member 47.
The window frame reinforcing member 47 has a bent portion 47 a at a distance B.

  The latch reinforcing member 54 and the belt line reinforcing member 51 are formed of a steel plate having a tensile strength greater than that of the window frame reinforcing member 47.

  The latch reinforcing member 54 and the belt line reinforcing member 51 are formed of a steel plate that is thicker than the plate thickness of the window frame reinforcing member 47.

  The upper edge 67 located above the edge 66 of the latch reinforcing member 54, and the lower edge 68 of the beltline reinforcing member 51 facing the upper edge 67 both extend in the width direction (X-axis direction) of the sliding door 13, and They are formed parallel to each other.

  An inner edge 72 of the edge 71 of the window frame reinforcing member 47 facing the inner side of the slide door 13 (in the direction of the arrow a1) is joined to the upper edge 67 of the latch reinforcing member 54 and the belt line reinforcing member 51 The edge 73 is joined to the lower edge 68.

The door inner panel 41 includes a work opening 77 for working with respect to the functional component 75 disposed inside the door main body 45, and an edge 78 of the work opening 77 between the belt line reinforcing member 51 and the latch reinforcing member 54. And a flat portion 81 that reaches the folding start portion 79 of the door inner panel 41 that overlaps with the separated portion (bending portion 47a) of the door inner panel 41 in the vehicle inside / outside direction (Y axis direction).
The “functional component 75” is, for example, a glass lifting device 75a.

  The flat part 81 is formed along the width direction (X-axis direction) of the door inner panel 41 from the upper edge part 82 located above the edge 78 of the work opening part 77 (the part indicated by the dotted pattern). ).

Next, the slide door 13 will be described in detail.
The slide door 13 has the latch reinforcing member 54, the beltline reinforcing member 51, and the window frame reinforcing member 47 already described.

  A door reinforcing mechanism 88 is formed from the three reinforcing members 54, 51, 47, a panel reinforcing member 86 provided at the center of the door main body 45, and a door lower reinforcing member 87 provided at the lower part of the slide door 13. ing. This door reinforcing mechanism 88 is joined to the door inner panel 41.

  The door inner panel 41 has a work opening 77 at the center upper portion of the door inner panel 41. The work opening 77 is formed by continuously opening the second hole 92 at the corner of the substantially square first hole 91 so as to extend outward from the first hole 91 (in the direction of the arrow a2). The first hole 91 has an upper edge 93 that is substantially parallel to the belt line portion 37.

As shown in FIG. 3, the door inner panel 41 also includes a first convex portion 95, a flat portion 81 (part indicated by a dotted pattern), and a second convex portion 96 in order downward from the belt line portion 37. Yes.
Since the 1st convex part 95 and the 2nd convex part 96 protrude toward the compartment 18, the intensity | strength is improving.

  The flat portion 81 (part indicated by a dot pattern) extends in the vertical direction (Z-axis direction) of the vehicle 11 and does not form a step. As a result, the strength is smaller than that of the first convex portion 95 and the second convex portion 96. The belt line reinforcing member 51 is overlapped and joined to the first convex portion 95. A latch reinforcing member 54 is overlapped and joined to the second convex portion 96.

The latch reinforcing member 54 is obtained by plastic processing of the first steel plate. The first steel plate is high-tensile steel, and the tensile strength σ1 is, for example, 60 kg / mm ² .
As shown in FIG. 2, the latch reinforcing member 54 is substantially rectangular and has an outward long edge 97 and an inward long edge 98 extending in the vertical direction of the vehicle 11. % Position) to the vicinity of the lower door lower reinforcing member 87. And the inward long edge 98 is arrange | positioned from the extension line E of the window frame part 46 inward (direction of arrow a1) of the slide door 13. As shown in FIG.

  The upper short edge (upper edge 67) is extended rearward (in the direction of arrow a3) from the inward long edge 98 and is separated from the beltline reinforcing member 51 at an intermediate point (relative to the length in the X-axis direction) of the latch reinforcing member 54. The direction is extended. As a result, it is easier to bend the window frame reinforcing member 47 in the vicinity of the folding start point 79 of the door inner panel 41 and the flat portion 81 (bending portion 47a).

  A corner (starting point) 101 formed by the upper short edge (upper edge 67) and the inward long edge 98 of the latch reinforcing member 54 is joined to the door inner panel 41 and the window frame reinforcing member 47 by the welded portion 102. As a result, it is easier to bend the window frame reinforcing member 47 in the vicinity of the folding start portion 79 and the flat portion 81 (bending portion 47a).

Further, a corner (end point) 103 formed by the upper short edge (upper edge 67) and the outward long edge 97 is joined to the door inner panel 41 and the window frame reinforcing member 47 by the welded portion 104. As a result, it is easier to bend the window frame reinforcing member 47 in the vicinity of the folding start portion 79 and the flat portion 81 (bending portion 47a).
The window frame reinforcing member 47 is fixed by the belt line reinforcing member 51 in the vicinity of the upper short edge (upper edge 67) of the latch reinforcing member 54.

The belt line reinforcing member 51 is obtained by plastic processing of the second steel plate. The second steel plate is high-tensile steel, and the tensile strength σ2 is, for example, 60 kg / mm ² .

More specifically, the second steel plate used for the beltline reinforcing member 51 may be a single steel plate or a tailored blank material.
Here, a tailored blank was used. The tailored blank material is a high-tensile steel plate, and a thin steel plate 107 is joined to a thick steel plate 106 having a different thickness by butt welding at a welded portion 108.

The thick steel plate 106 has a tensile strength σ2.
Here, the “thick steel plate” means here that it is thicker than the thin steel plate, and is the thickness of a general thin steel plate for automobiles.

  The belt line reinforcing member 51 is substantially rectangular, and the upper long edge 111 is arranged and joined substantially parallel to the belt line portion 37, and the upper long edge 111 is included in the belt line portion 37. The lower long edge 112 is arranged at the center of the slide door 13 (position of about 50% of the door height) and joined to the door inner panel 41.

  The belt line reinforcing member 51 extends to the center of the window frame reinforcing member 47 and overlaps. The overlapped portion (one end portion) is joined to the door inner panel 41 with a welded portion 114 (FIG. 4) and the welded portion 102 with a window frame reinforcing member 47 interposed therebetween.

The window frame reinforcing member 47 is obtained by plastic working a third steel plate. The third steel plate has a tensile strength σ3 of, for example, 30 kg / mm ² and is lower than the first steel plate and the second steel plate.

  Further, the window frame reinforcing member 47 is plate-shaped and has an approximately L-shape, the standing portion 116 is formed in a shape that substantially matches the thickness of the window frame portion 46, and the lateral portion 117 that continues to the standing portion 116 is raised. The portion 116 is extended and further extended inward (in the direction of the arrow a1) of the slide door 13 to form a substantially square shape.

  Then, the lower end 118 of the lateral portion 117 is overlapped and joined to the latch reinforcing member 54, and the inner edge 72 of the lateral portion 117 is inward of the sliding door 13 (in the direction of the arrow a1) from the extension line E of the window frame portion 46. The inner edge 72 was sandwiched and joined between the door inner panel 41 and the beltline reinforcing member 51 (FIG. 4). A panel reinforcing member 86 is disposed substantially in parallel below the belt line reinforcing member 51.

The panel reinforcing member 86 is joined to the door outer panel 43 with an adhesive. Deflection of the door outer panel 43 can be suppressed by the panel reinforcing member 86.
A door lower reinforcement member 87 is disposed below the panel reinforcement member 86.

Next, the operation of the slide door 13 will be described.
In the sliding door 13, as shown in FIG. 6, when the vehicle 11 collides and the occupant comes into contact with the inside (interior member) of the sliding door 13, the sliding door 13 bends from the center. Is suppressed.

  Specifically, for example, when an impact is input from the outside of the vehicle 11 to the right side surface other than the right slide door 13 and an occupant or the like comes into contact with the inner central portion of the right slide door 13, the door inner panel 41. The load is distributed to the window frame reinforcing member 47, the belt line reinforcing member 51, and the latch reinforcing member 54. Then, the latch reinforcing member opposed to the center portion of the door inner panel 41 and the center of the door inner panel 41 by the working opening 77 of the door inner panel 41, the latch reinforcing member 54 having a high tensile strength, and the belt line reinforcing member 51. Since the load concentrates between the belt line reinforcing member 51 and the belt line reinforcing member 51, as shown in FIGS. 5 and 6, the center of the slide door 13 bends inside the slide door 13 in a valley fold, and the slide door 13 The upper end 56 and the lower end 61 enter the vehicle interior as indicated by arrows a4 and a5.

  As a result, the opening between the front edge (the other end) 55 and the rear edge (one end) 52 of the slide door 13 and the door opening 25 can be prevented from being increased. Things can be prevented from popping out.

Further, in the sliding door 13, when a load is transmitted to the window frame reinforcing member 47, only the window frame reinforcing member 47 formed with a substantially constant width between the latch reinforcing member 54 and the belt line reinforcing member 51 is used. The load concentrates on a portion (bending portion 47a) at a distance B (FIG. 2) extending in the width direction (FIG. 5).
As a result, the window frame reinforcing member 47 and the door inner panel 41 (sliding door 13) are bent at the ridgeline 121 along the width direction of the sliding door 13 (in other words, a substantially horizontal line), starting from the portion of the distance B (bending portion 47a). Therefore, the variation in the opening (gap) between the deformed slide door 13 and the door opening 25 can be reduced.

Furthermore, in the sliding door 13, when a load is transmitted to the window frame reinforcing member 47, only the portion (distance) of the inner edge 72 of the window frame reinforcing member 47 formed between the latch reinforcing member 54 and the belt line reinforcing member 51. The load concentrates on B).
As a result, the part of the inner edge 72 only (distance B) can be more reliably used as the starting point of deformation, and the part of the inner edge 72 only (distance B) can be more reliably used. There is an advantage that the panel 41 (slide door 13) can be bent, and the state after deformation of the slide door 13 can be easily brought close to the state intended by the designer.

In addition, in the slide door 13, when a load is transmitted to the door inner panel 41, the load concentrates on a flat portion (portion indicated by a dotted pattern) 81 between the first convex portion 95 and the second convex portion 96.
As a result, the bending deformation of the door inner panel 41 can be promoted, and the inner side of the sliding door 13 can be folded into the valley fold from the vicinity of the belt line portion 37 of the sliding door 13 (the center portion of the sliding door 13). The ridgeline 121 can be bent along the direction of 13 widths.

In the sliding door 13, the latch reinforcing member 54 and the belt line reinforcing member 51 having a higher tensile strength than those of the window frame reinforcing member 47 are selected. However, the sliding reinforcing member 54 is not limited to the tensile strength, and is not limited to the tensile strength. Alternatively, the belt line reinforcing member 51 may be selected.
That is, the latch reinforcing member 54 and the belt line reinforcing member 51 may be another sliding door (not shown) formed of a steel plate having a plate thickness larger than that of the window frame reinforcing member 47.

  Another slide door is the same as the side view of the vehicle 11 (viewpoint in FIG. 2) and the slide door 13, and only the plate thickness is different.

For example, the tensile strength of the latch reinforcing member 54, the belt line reinforcing member 51, and the window frame reinforcing member 47 is the same, or the tensile strength of the latch reinforcing member 54 and the belt line reinforcing member 51 is the window frame reinforcing. It is smaller than the tensile strength of the member 47.
In short, the latch reinforcing member 54 and the belt line reinforcing member 51 completed as single parts have a strength (tensile strength, section modulus) larger than that of the window frame reinforcing member 47.

  The other slide door 13 exhibits the same operation and effect as the slide door 13 in which the tensile strengths σ1, σ2, and σ3 are specified.

  The sliding door of the present invention is suitable for an automobile.

  DESCRIPTION OF SYMBOLS 11 ... Vehicle, 12 ... Vehicle body, 13 ... Sliding door, 25 ... Door opening part, 37 ... Belt line part, 41 ... Door inner panel, 42 ... Perimeter part of door inner panel, 43 ... Door outer panel, 44 ... Door outer panel Peripheral part, 45 ... door body part, 46 ... window frame part, 47 ... window frame reinforcement member, 51 ... belt line reinforcement member, 53 ... latch member, 54 ... latch reinforcement member, 57 ... first corner of slide door, 58 ... 1st connection mechanism, 62 ... 2nd corner | angular part, 63 ... 2nd connection mechanism, 67 ... Upper edge of a latch reinforcement member, 68 ... Lower edge of a beltline reinforcement member, 72 ... Inner edge of a window frame reinforcement member , 75 ... functional parts, 77 ... work opening, 79 ... folding start part, 81 ... flat part, 82 ... upper edge part of work opening.

Claims (6)

A sliding door slidably attached to a door opening of a vehicle body,
The sliding door includes a door main body portion having a closed cross-sectional shape obtained by joining a peripheral portion of a door inner panel and a peripheral portion of a door outer panel;
A window frame portion having a closed cross-sectional shape provided above the door body portion;
A window frame reinforcing member attached across the door inner panel and the window frame portion;
A belt line reinforcing member attached to the door inner panel along a belt line portion forming an upper edge of the door body portion;
A latch member disposed in the door main body, provided in the center in the vertical direction at one end in the width direction of the slide door, and latched to the vehicle body as necessary;
A latch reinforcing member attached to the door inner panel to which the latch member is attached;
A first coupling mechanism provided at a first corner where the other end of the sliding door intersects with the upper end of the sliding door and slidably supported on the vehicle body;
A second connecting mechanism provided at a second corner where the other end of the sliding door and the lower end of the sliding door intersect, and slidably supported on the vehicle body;
The beltline reinforcing member is spaced apart from the latch reinforcing member, and the beltline reinforcing member is connected to the latch reinforcing member by the window frame reinforcing member.
The sliding door, wherein the latch reinforcing member and the belt line reinforcing member are formed of a steel plate having a tensile strength greater than that of the window frame reinforcing member. A sliding door slidably attached to a door opening of a vehicle body,
The sliding door includes a door main body portion having a closed cross-sectional shape obtained by joining a peripheral portion of a door inner panel and a peripheral portion of a door outer panel;
A window frame portion having a closed cross-sectional shape provided above the door body portion;
A window frame reinforcing member attached across the door inner panel and the window frame portion;
A belt line reinforcing member attached to the door inner panel along a belt line portion forming an upper edge of the door body portion;
A latch member disposed in the door main body, provided in the center in the vertical direction at one end in the width direction of the slide door, and latched to the vehicle body as necessary;
A latch reinforcing member attached to the door inner panel to which the latch member is attached;
A first coupling mechanism provided at a first corner where the other end of the sliding door intersects with the upper end of the sliding door and slidably supported on the vehicle body;
A second connecting mechanism provided at a second corner where the other end of the sliding door and the lower end of the sliding door intersect, and slidably supported on the vehicle body;
The beltline reinforcing member is spaced apart from the latch reinforcing member, and the beltline reinforcing member is connected to the latch reinforcing member by the window frame reinforcing member.
The slide reinforcing member and the belt line reinforcing member are formed of a steel plate having a thickness greater than that of the window frame reinforcing member.   Of the edges of the latch reinforcing member, the upper edge located above and the lower edge of the belt line reinforcing member facing the upper edge both extend in the width direction of the sliding door and are formed in parallel to each other. The sliding door according to claim 1 or 2, characterized by the above-mentioned.   Of the edges of the window frame reinforcing member, the inner edge of the sliding door that faces inward is joined to the upper edge of the latch reinforcing member, and joined to the lower edge of the belt line reinforcing member. The sliding door according to any one of claims 1 to 3, wherein the sliding door is provided.   The door inner panel includes a working opening for working a functional component disposed inside the door main body, and a separation portion between the belt line reinforcing member and the latch reinforcing member from an edge of the working opening. The slide door according to any one of claims 1 to 4, further comprising: a flat portion that reaches a folding start portion of the door inner panel that overlaps in a vehicle inside / outside direction.   6. The sliding door according to claim 5, wherein the flat portion is formed along the width direction of the door inner panel from an upper edge portion located above the edge of the work opening.

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