JP5056456B2 - Sunroof mounting structure - Google Patents

Description

  The present invention relates to a sunroof mounting structure for mounting a sunroof glass to a roof opening of a roof panel.

  The sunroof vehicle has a sunroof attachment structure for attaching the sunroof glass to the roof panel. In such a sunroof mounting structure, a roof opening is formed in a roof panel in which flanges at both ends in the vehicle width direction are coupled to a roof side rail, and a sunroof reinforcement is disposed on the inner peripheral edge of the roof opening. ing. The sunroof reinforcement is provided to improve the rigidity of the roof opening. Then, brackets are provided at a plurality of locations on the lower surface of the sunroof reinforcement, and sunroof units fitted with sunroof glass are attached by these brackets.

  In recent years, in order to reduce the weight of a vehicle and improve the maneuverability, it has been promoted to construct the roof panel with a light alloy such as aluminum. As described above, sunroof vehicles are provided with sunroof reinforcements and sunroof units at the inner peripheral edge of the sunroof opening. However, these sunroof reinforcements and sunroof units are also made of aluminum for further weight reduction of the vehicle. Or a light alloy such as

In this case, the roof side rail is made of iron or the like, and the roof panel made of a light alloy such as aluminum having a linear expansion coefficient larger than that of iron, when heated by sunlight or the like, its in-plane direction Thus, the roof panel is curved in a convex shape toward the outside of the vehicle body. For example, when a member having a large coefficient of linear expansion is used for the outer plate panel, the inner surface side both ends of the outer plate panel are connected by a plate member having a smaller coefficient of linear expansion than the outer plate panel. An outer panel mounting structure has been proposed in which, when heated, the expansion of the inner panel side of the outer panel is restrained and the outer panel is curved outwardly from the vehicle body (see, for example, Patent Document 1). ).
Japanese Utility Model Publication No. 4-55482

  However, in the above conventional technique, since a very large plate-shaped member is passed along the longitudinal direction of the vehicle body outer plate, there is a problem that the vehicle space is increased and the cost and the vehicle weight increase.

  In the present invention, due to the difference in thermal expansion between the roof panel and the sunroof glass, a surface difference occurs between the roof panel and the sunroof glass, and the appearance quality and the watertightness between the weatherstrip of the sunroof glass and the roof panel are improved. It is an object of the present invention to provide a sunroof mounting structure that does not take up vehicle space or increase cost or vehicle weight against the decrease.

  In order to solve the above problems, the present invention provides a roof panel having both ends in the vehicle width direction coupled to a roof side rail and having a roof opening, and a sunroof reinforcement disposed at an inner peripheral edge of the roof opening. A sunroof unit that is disposed below the sunroof reinforcement and supports the sunroof glass, and is disposed on the lower surface of the sunroof reinforcement and at the front and side of the roof opening. A sunroof mounting structure comprising a plurality of brackets for mounting a sunroof unit, wherein the roof panel, the sunroof reinforcement, the sunroof unit, and the plurality of brackets are larger than a linear expansion coefficient of the roof side rail. Large, laterally arranged A plate member made of a material having a linear expansion coefficient smaller than that of the bracket is formed on the central vertical wall of the bracket. It is characterized by the combination.

  According to the present invention, even when heated by sunlight or the like, the center-side vertical wall of the bracket on the substantially central side in the longitudinal direction of the vehicle body thermally expands, but the center-side vertical wall is more linear than the bracket. Since the plate member made of a material having a small expansion coefficient is surface-bonded, the central vertical wall is curved toward the rear side of the vehicle body so that the bimetal is deformed together with the plate member. Due to this curve, the front side of the bracket is displaced downward (that is, displaced forwardly downward), and the rear side is displaced upward (that is, displaced upwardly) so that the sunroof glass matches the roof panel. Can be lifted upwards in posture. As a result, it is possible to prevent deterioration in appearance and watertightness due to a difference in level (step) between the roof panel and the sunroof glass without taking up vehicle space, increasing costs, or increasing vehicle weight. it can.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a view of a skeletal structure of a roof portion of a sunroof vehicle as viewed from above. In FIG. 1, the left side is the vehicle body front side, and the right side is the vehicle body rear side. In FIG. 1, the roof panel is removed.

  The roof skeleton structure 1 is provided with roof side rails 2 and 3 along the vehicle longitudinal direction at both ends in the vehicle width direction. Between these roof side rails 2 and 3, three bowl hoods 4, 5 and 6 are bridged from the front to the rear of the vehicle body in the vehicle width direction.

  A sunroof reinforcement 7 is attached to the bowl hood 4 provided at the front of the vehicle body among the bowl hoods 4, 5 and 6. The sunroof reinforcement 7 includes a belt-like front long side member 7A, a rear long side member 7B, a right short side member 7C, and a left short side member 7D which are arranged in a substantially rectangular ring shape in plan view. A substantially rectangular opening 8 is formed at the center of the front long side member 7A, the rear long side member 7B, the right short side member 7C, and the left short side member 7D. In the present embodiment, the rear long side member 7B is fixed to the bowl hood 4.

  On the lower surface of the sunroof reinforcement 7, four brackets 11, 12, 13, and 14 for attaching the sunroof unit 10 (see FIG. 2) are provided. Among these brackets 11, 12, 13, and 14, the brackets 11 and 12 are disposed on both ends of the front long side member 7 </ b> A of the sunroof reinforcement 7 along the vehicle width direction. The bracket 13 is disposed on the right short side member 7C of the sunroof reinforcement 7 on the rear side (substantially in the center along the roof side rail 2) along the vehicle longitudinal direction. Further, the bracket 14 is disposed on the left short side member 7D of the sunroof reinforcement 7 on the rear side (substantially the center along the roof side rail 3) along the vehicle body longitudinal direction.

  A roof panel 15 shown in FIG. 6 is assembled on the upper surface of the roof skeleton structure 1 shown in FIG. A roof opening 15 </ b> A is formed in the roof panel 15, and when the roof panel 15 is assembled to the roof skeleton structure 1, the roof opening 15 </ b> A is aligned with the opening 8 of the sunroof reinforcement 7. Further, the lower surface of the roof panel 15 is joined to the upper surfaces of the bowls 4, 5, 6.

  Further, flange portions (not shown) are formed at both ends of the roof panel 15 in the vehicle width direction. When the roof panel 15 is assembled to the roof skeleton structure 1, these flange portions are attached to the roof side rails 2 and 3. Each is combined.

  FIG. 2 is a plan view of the sunroof unit 10. In FIG. 2, the left side is the vehicle body front side, and the right side is the vehicle body rear side. The sunroof unit 10 has a U-shaped frame 16, and sunroof reinforcement mounting portions 17 and 18 are provided at a frame center portion 16 </ b> A arranged in the vehicle width direction. Brackets 11 and 12 (see FIG. 1) provided on the sunroof reinforcement 7 are attached to the sunroof reinforcement attachment portions 17 and 18, respectively.

  Further, in the frame 16, a sunroof reinforcement mounting portion 19 is provided on a frame right side portion 16 </ b> B disposed along the vehicle longitudinal direction on the vehicle body right side (upper side in the drawing) of the frame center portion 16 </ b> A. A bracket 13 (see FIG. 1) provided on the sunroof reinforcement 7 is attached to the sunroof reinforcement attachment portion 19.

  Further, a sunroof reinforcement mounting portion 20 is provided on the frame left side portion 16C of the frame 16 that is disposed along the vehicle body front-rear direction on the vehicle body left side (lower side in the drawing) of the frame center portion 16A. A bracket 14 (see FIG. 1) provided on the sunroof reinforcement 7 is attached to the sunroof reinforcement attachment portion 20.

  In FIG. 2, a substantially rectangular portion indicated by a broken line indicates the sunroof glass 21. Both ends of the sunroof glass 21 in the vehicle width direction are connected to a link mechanism 22 provided on the right side portion 16B of the frame and a link mechanism 23 provided on the left side portion 16C of the frame, respectively. Is opened and closed.

  The sunroof reinforcement 7, the sunroof unit 10, the brackets 11, 12, 13, 14, the roof panel 15 and the frame 16 are made of a light alloy such as aluminum. The roof side rails 2 and 3 are made of iron or the like having a smaller linear expansion coefficient than a light alloy such as aluminum.

  3 shows a cross section taken along the line SA-SA in FIG. 1. The sunroof unit 10 in FIG. 2 is assembled to the roof skeleton structure 1 (see FIG. 1), and the roof skeleton structure 1 is formed on the upper surface thereof. It is sectional drawing when the roof panel 15 is attached.

  As shown in FIG. 3, a roof opening 15A is formed in the roof panel 15, and a sunroof glass 21 is incorporated in the roof opening 15A. The roof opening 15A has a substantially rectangular shape (see FIG. 6), and the sunroof glass 21 is formed in a shape (see FIG. 2) that matches the roof opening 15A.

  4 and 5 show details in the vicinity of the bracket 13, FIG. 4 is a cross-sectional view taken along line SB-SB in FIG. 2, and FIG. 5 is a cross-sectional view taken along line SC-SC in FIG. Note that the vicinity of the bracket 14 has the same configuration as that shown in FIGS.

  As shown in FIG. 4, the bracket 13 is formed by bending a belt-like member into a substantially inverted hat shape, and from the front flange wall 13A, the front vertical wall 13B, the bottom wall 13C, the central vertical wall 13D, and the central flange wall 13E. It is made up. The front flange wall 13A and the center side flange wall 13E are fixed to the right short side member 7C of the sunroof reinforcement 7 by welding or the like.

  Bolt holes 13F and 16D are provided in the bottom wall 13C of the bracket 13 and the frame right side portion 16B of the frame 16, respectively. Bolts 24 inserted into the bolt holes 13F and 16D and nuts screwed into the bolts 24 are provided. By tightening 25, the bracket 13 is fixed to the frame 16.

  In this embodiment, the front vertical wall 13B of the bracket 13 is an inclined wall whose upper part is inclined toward the vehicle body front side, and the central side vertical wall 13D is an inclined wall whose upper part is inclined toward the vehicle body rear side. It has become. That is, in the bracket 13, the distance between the upper end portion of the front vertical wall 13B and the upper end portion of the central vertical wall 13D is longer than the length of the bottom wall 13C along the vehicle body front-rear direction.

  In the present embodiment, the contact plate 26 is surface-bonded to the wall surface on the front side of the vehicle body among the front and rear wall surfaces of the central vertical wall 13D. The contact plate 26 is made of a material (for example, an iron plate) whose linear expansion coefficient is smaller than the linear expansion coefficient of the bracket 13 (light alloy such as aluminum).

  As shown in FIG. 5, the right short side member 7 </ b> C of the sunroof reinforcement 7 has an inverted cup shape in cross section, and the front flange wall 13 </ b> A (see FIG. 4) and the center side flange of the bracket 13. The wall 13E (see FIG. 4) is fixed to the inverted cup-shaped bottom wall portion 7E.

  Further, the frame right side portion 16B of the frame 16 is formed with a recess 16E at a portion on the inner side in the vehicle width direction from the place where the bracket 13 is attached, and the link mechanism 22 is placed on the recess 16E. The upper part of the link mechanism 22 is in contact with the sunroof glass 21. In addition, since the link mechanism 22 is provided in the vehicle body front side rather than the bracket 13, it is shown with the dashed-two dotted line in FIG.

  Next, the operation of this embodiment will be described.

  When heated by sunlight or the like, the roof panel 15 is coupled to the roof side rails 2 and 3 at both ends in the vehicle width direction, and the linear expansion coefficient of the roof panel 15 is the linear expansion coefficient of the roof side rails 2 and 3. Therefore, the entire roof panel 15 is deformed in a convex shape above the vehicle body although it is slight due to thermal expansion. At this time, as shown in FIG. 6, in the roof opening 15A, the deformation amount is small in the front side inner peripheral range L1, and the deformation amount is large in the rear side inner peripheral range L2. Further, the right inner peripheral range L3 and the left inner peripheral range L4 are intermediate deformation amounts in the range L1 and deformation amounts in the range L2.

  FIG. 7 shows how the roof panels 15 in front of and behind the roof opening 15A are deformed when the roof panel 15 is heated. When heated, the roof panel 15 slightly rises from the position of the two-dot chain line to the position of the solid line on the front side of the roof opening 15A, but from the position of the two-dot chain line to the position of the solid line on the rear side of the roof opening 15A. It rises greatly until. As a result, in particular, a large surface difference (step) S is generated between the rear side of the sunroof glass 21 and the roof panel 15 (the roof panel 15 on the rear side of the roof opening 15A).

  In the sunroof mounting structure in the present embodiment, the contact plate 26 is surface-joined to the central vertical wall 13D of the bracket 13, and the linear expansion coefficient of the contact plate 26 is the linear expansion coefficient of the bracket 13 (that is, the central vertical wall 13D). Therefore, when the roof panel 15 is heated and the temperature of the bracket 13 as a whole rises, the central vertical wall 13D of the bracket 13 and the contact plate 26 are deformed so that the bimetal is deformed. Is deformed in a curved shape toward the rear side of the vehicle body.

  When the center-side vertical wall 13D of the bracket 13 is deformed in a curved shape toward the rear side of the vehicle body, a force (moment) that pushes the rear portion of the sunroof glass 21 upward as shown by the arrow A acts on the bracket 13. The upper surface rises from the position of the two-dot chain line to the position of the solid line. As a result, the occurrence of a surface difference (step) S between the roof panel 15 and the sunroof glass 21 can be suppressed.

  Here, the point that the bracket 13 lifts the rear part of the sunroof glass 21 upward of the vehicle body when the central vertical wall 13D of the bracket 13 is deformed in a curved shape toward the vehicle body rear side will be described in detail with reference to FIG.

  In the bottom wall 13C of the bracket 13, the distance between the front end of the top surface of the bottom wall 13C (intersection line portion 30 between the top surface of the bottom wall 13C and the top surface of the front vertical wall 13B) and the center line BL of the bolt 24 (see FIG. 4). When a, and the distance between the rear end of the upper surface of the bottom wall 13C (intersection line portion 31 between the upper surface of the bottom wall 13C and the upper surface of the central vertical wall 13D) and the center line BL of the bolt 24, b> a> b Is set.

  When the angle between the top surface of the front vertical wall 13B and the top surface of the bottom wall 13C of the bracket 13 is θ1, and the angle between the top surface of the central vertical wall 13D and the top surface of the bottom wall 13C of the bracket 13 is θ2, θ1> θ2 Is set.

  When the temperature of the bracket 13 rises due to heating, the front vertical wall 13B thermally expands, and the position of the intersecting line portion 30 between the upper surface of the bottom wall 13C and the upper surface of the front vertical wall 13B is shown by a two-dot chain line in FIG. As shown by, it is displaced obliquely downward on the rear side of the vehicle body.

  On the other hand, a contact plate 26 is surface-joined on the upper surface of the center side vertical wall 13D, and the center side vertical wall 13D is made of aluminum and the contact plate 26 is made of iron. Therefore, when the temperature of the bracket 13 rises. The center-side vertical wall 13D greatly expands in the oblique in-plane direction, but the contact plate 26 does not expand much in the oblique in-plane direction. That is, the amount of thermal expansion of the center side vertical wall 13D is large, and the amount of thermal expansion of the backing plate 26 is small.

  Further, since the contact plate 26 is surface joined to the upper surface of the central vertical wall 13D, the elastic expansion / contraction amount of the central vertical wall 13D is constrained by the contact plate 26, and conversely, the elastic expansion / contraction amount of the contact plate 26. Is restrained by the central vertical wall 13D.

  On the joint surface between the central vertical wall 13D and the contact plate 26, the sum of the elastic expansion and contraction and the thermal expansion amount must be equal for the central vertical wall 13D and the contact plate 26. For this purpose, vertical stress is generated in each cross section of the central vertical wall 13D and the contact plate 26, and vertical forces P1 and P2 which are the resultant force of the vertical stress are respectively applied to the end portions of the central vertical wall 13D and the contact plate 26. Act on. At the same time, bending moments M1 and M2, which are the resultant moments of the vertical stress, act on each end portion of the central vertical wall 13D and the contact plate 26.

  As a result of vertical forces P1 and P2 and bending moments M1 and M2 acting on the end portions of the center-side vertical wall 13D and the contact plate 26, the center-side vertical wall 13D increases to the rear side of the vehicle body like the bimetal together with the contact plate 26. Deforms into a curved shape.

  Further, the center-side vertical wall 13D is deformed in a curved shape together with the contact plate 26, so that a connecting portion between the center-side vertical wall 13D and the bottom wall 13C (intersection line portion 31 between the upper surface of the bottom wall 13C and the upper surface of the center-side vertical wall 13D). Near) is displaced upward, and the upper surface position of the bracket 13 is deformed as shown by a two-dot chain line in the figure.

  Further, the distance a between the intersection line portion 30 and the center line BL of the bolt 24 and the distance b between the intersection line portion 31 and the center line BL of the bolt 24 are set as a> b, and the upper surface of the front vertical wall 13B Since the angle θ1 between the top surface of the bottom wall 13C and the angle θ2 between the top surface of the center side vertical wall 13D and the top surface of the bottom wall 13C are set to θ1> θ2, when the bracket 13 is deformed as described above, the front of the bracket 13 The portion side (intersection line portion 30 side) tends to fall forward, and the rear side (intersection portion 31 side) tends to rise rearward.

  When the bracket 13 is deformed so that the front side is lowered forward and the rear side is raised rearward, the upper surface of the bottom wall 13C of the bracket 13 is displaced upward by δ at the center line BL of the bolt 24.

  According to the present embodiment, the appearance difference and the decrease in watertightness due to the occurrence of a surface difference (step) between the roof panel 15 and the sunroof glass 21 can reduce the vehicle space, increase the cost and the vehicle weight. Can be prevented without.

  As mentioned above, although the Example of this invention has been explained in full detail with drawing, the said Example is only the illustration of this invention, and this invention is not limited only to the structure of the said Example. Needless to say, changes in design and the like within the scope of the present invention are included in the present invention.

  For example, in the above-described embodiment, the sunroof glass 21 is provided on the front side ceiling portion of the passenger compartment, but the present invention is also applicable to a case where the sunroof glass is provided on the rear side ceiling portion of the passenger compartment. can do. Even in this case, the bracket for attaching the contact plate is on the vehicle body center side.

It is the figure which looked at the frame structure of the roof part in a sunroof vehicle from the upper part. It is a top view of a sunroof unit. FIG. 2 is a cross-sectional view taken along line SA-SA in FIG. 1, wherein the sunroof unit is assembled to the roof skeleton structure and a roof panel is attached to the upper surface of the roof skeleton structure. FIG. 3 is a cross-sectional view taken along line SB-SB in FIG. 2. It is sectional drawing along the SC-SC line of FIG. It is a top view of the roof panel which has a roof opening part. It is a figure which shows a mode that the roof panel of the front and back of a roof opening part deform | transforms when a roof panel is heated. It is a figure which shows a mode that the bracket heated with sunlight etc. deform | transforms.

Explanation of symbols

2,3 Roof side rail 7 Sunroof reinforcement 8 Opening 10 Sunroof unit 11, 12, 13, 14 Bracket 13B Front vertical wall 13C Bottom wall 13D Center side vertical wall 15 Roof panel 15A Roof opening 16 Frame 21 Sunroof glass 26 Batting plate

Claims (4)

A roof panel having both ends in the vehicle width direction coupled to the roof side rail and having a roof opening;
A sunroof reinforcement disposed on the inner peripheral edge of the roof opening,
A sunroof unit disposed below the sunroof reinforcement and supporting the sunroof glass;
A sunroof mounting structure comprising a plurality of brackets provided on a lower surface of the sunroof reinforcement and disposed on the front and side of the roof opening and for attaching the sunroof unit to the sunroof reinforcement,
The roof panel, the sunroof reinforcement, the sunroof unit, and the plurality of brackets are larger than a linear expansion coefficient of the roof side rail,
Of the brackets arranged in the lateral direction, the substantially central side in the longitudinal direction of the vehicle body is formed into a substantially inverted hat shape in cross section when viewed from the side of the vehicle body, and the linear expansion coefficient is smaller than the bracket on the central vertical wall of the bracket A sunroof mounting structure in which plate members made of materials are surface-joined. The bracket formed in a substantially inverted hat shape in cross section is formed by bending a belt-like plate material, and a front vertical wall provided at the front of the bottom wall and inclined at the front side of the vehicle body. And a central vertical wall provided at the rear of the bottom wall and having an upper portion inclined toward the rear of the vehicle body,
When the angle between the front vertical wall and the bottom wall is θ1, and the angle between the central vertical wall and the bottom wall is θ2, the relationship is set to θ1> θ2. Item 10. The sunroof mounting structure according to item 1.   The bracket formed in a substantially inverted hat shape in cross section has a distance between a position of a mounting portion of the bottom wall to the sunroof unit and a fold line between the bottom wall and the front vertical wall. When the distance between the position of the attachment portion of the wall to the sunroof unit and the fold line between the bottom wall and the central vertical wall is b, the relationship is set as a> b. The sunroof mounting structure according to claim 2.   4. The sunroof mounting structure according to claim 1, wherein the roof panel, the sunroof reinforcement, the sunroof unit, and the bracket are each formed of aluminum, and the plate member is formed of iron. .

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