JP2005225440A - Bumper mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bumper mounting structure capable of preventing lowering in appearance quality, and securely holding a bumper on a vehicle body panel even if used for a long term. <P>SOLUTION: In the mounting structure, a bumper side flange 4 is united to a vehicle body side flange 8 by using a mounting member 3, and a bumper side 1 is mounted to a vehicle body panel 2. The mounting member 3 has an upper clipping piece 11 and a lower clipping piece 12 united with each other through a thin-wall hinge 10. A leg portion 17 having elasticity and a through hole 13 are respectively provided on the lower clipping piece 12 and the upper clipping piece 11. When folded by the thin-wall hinge 10, the leg portion 17 is inserted in the through hole 13 to oppositely disposed the upper clipping piece 11 and the lower clipping piece 12 while keeping a clearance. A tip end of the leg portion 17 inserted in the through hole 13 is fitted with a locking hole 9 of the vehicle body panel side flange 8 and locked to the locking hole 9, thereby fixing the mounting member 3 to the vehicle body panel side flange 8. On the other hand, the bumper side flange 4 is pressed in the clearance between the upper clipping piece 11 and the lower clipping piece 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bumper mounting structure, and more particularly to a bumper mounting structure in which a bumper is mounted on a vehicle body panel using an mounting member.

  Conventionally, as this kind of technology, a body panel side flange projecting to the outside of the vehicle body is provided at the lower part of the body panel, and the body panel side flange and the bumper side flange at the upper end of the bumper are formed using a S-shaped clip. A combined bumper mounting structure is known (see, for example, Patent Document 1).

  The clip has an upper holding piece having a U-shaped cross section at the upper part, and a bumper side flange is fitted to the upper holding piece. Further, the clip is provided with a lower holding piece through a thin hinge, and when the thin hinge is bent, the lower holding piece can hold the vehicle body panel side flange with the upper holding piece. At this time, since the lower sandwiching piece is arranged in an L-shaped section below the upper sandwiching piece having a U-shaped section, the entire clip has an S-shaped section.

  The vehicle body panel side flange and the bumper side flange are each provided with a through hole, and the upper holding piece and the lower holding piece are also provided with a through hole in accordance with each through hole. The bumper side flange is fixed to the vehicle body panel side flange by inserting a pin through these through holes and pressing the clip at both ends of the pin.

As another technology of this kind, the body panel side flange and the bumper side flange are provided at the edge of the body panel and the bumper side, and the through holes are formed in the body panel side flange and the bumper side flange, respectively. The bumper side mounting structure is configured to hold the bumper side to the vehicle body panel by inserting a pair of elastic legs into the through holes and further locking the pair of elastic legs to the inner edge of the through hole. It has been proposed (see, for example, Patent Document 2).
No. 6-42088 Japanese Patent No. 3334654

  However, in the thing of the said patent document 1, in order to absorb the manufacturing error of a vehicle body panel side flange or a bumper side flange, since the length of a pin is a little long, that is, it has a structure which has an overstroke allowance. When the body panel side flange and the bumper side flange are made with high accuracy, there is a gap on the mating surface between the body panel side flange and the bumper side flange by the amount of the overstroke, which deteriorates the appearance quality. There is.

  Moreover, in the thing of patent document 2, an elastic leg part is made of a synthetic resin, and the locking member for locking the elastic leg part to the inner edge of the through hole is also made of a synthetic resin integrally formed with the elastic leg part. There is a problem that the elastic leg portion and the locking member are deteriorated with time during long-term use, and the holding force for holding the bumper side on the vehicle body panel is reduced.

  An object of the present invention is to provide a bumper mounting structure that can prevent the appearance quality from being deteriorated and that can securely hold the bumper to the vehicle body panel even after long-term use.

In order to solve the above problems, the present invention provides a bumper side flange and a vehicle body panel side flange projecting inward of the vehicle body at the bumper edge and the vehicle body panel edge, respectively, and the bumper side flange is attached to the vehicle body using an attachment member. A bumper mounting structure in which the bumper is mounted on the vehicle body panel by being connected to the panel side flange,
The mounting member has an upper clamping piece and a lower clamping piece connected to each other via a thin hinge, the lower clamping piece has a pair of elastic legs, and the upper clamping piece has a through hole. Each provided, and when bent by the thin hinge, the leg portion is inserted into the through-hole, and the upper sandwiching piece and the lower sandwiching piece are arranged to face each other with a gap,
By fitting the front ends of the pair of leg portions inserted into the through holes into locking holes formed in the body panel side flange and locking the mounting members to the locking body, While fixing to the panel side flange,
The bumper side flange is press-fitted into the gap between the upper clamping piece and the lower clamping piece.

  According to the above configuration, since the bumper side flange is press-fitted into the gap between the upper clamping piece and the lower clamping piece, no gap is formed on the mating surface of the vehicle body panel side flange and the bumper side flange.

  Further, the ends of the pair of leg portions inserted through the through holes are fitted into locking holes formed in the flange on the vehicle body panel side, and are locked in the locking holes, so that the bumper is attached to the vehicle body panel. It can be reliably held over a period.

  According to the present invention, no gap is formed on the mating surface of the vehicle body panel side flange and the bumper side flange, and deterioration in appearance quality can be avoided.

  Further, since the ends of the pair of leg portions are fitted and locked in the locking holes of the flange on the vehicle body panel side, the bumper side can be securely held on the vehicle body panel even when used for a long time.

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

  FIG. 1 is an exploded perspective view showing a bumper mounting structure according to the present invention. This bumper attachment structure can be used as a structure for attaching the entire bumper to the vehicle body panel. In this embodiment, the bumper attachment structure will be described as a bumper attachment structure for attaching the bumper side to the vehicle body panel.

  In FIG. 1, 1 is a bumper side, 2 is a vehicle body panel, and 3 is an attachment member for attaching the bumper side 1 to the vehicle body panel 2. A bumper side flange 4 that protrudes uniformly toward the inside of the vehicle body is provided at the upper edge of the bumper side 1, and two protrusions 5 that protrude greatly toward the inside of the vehicle body are formed on the bumper side flange 4. Concave portions 6 are provided on both sides of the protruding portions 5 toward the outside of the vehicle body. The bumper side flange 4 is formed with two rectangular engagement holes 7 between the protrusions 5.

  A vehicle body panel side flange 8 that protrudes uniformly toward the inside of the vehicle body is provided at the lower edge of the vehicle body panel 2, and two rectangular locking holes 9 are formed in the vehicle body panel side flange 8.

  The attachment member 3 has an upper clamping piece 11 and a lower clamping piece 12 that are connected to each other via a thin hinge 10. The upper clamping piece 11 has a belt shape, and is formed in a flat plate shape as a whole in accordance with the shape of the vehicle body panel side flange 8. Further, the lower sandwiching piece 12 is disposed below the upper sandwiching piece 11, has a substantially band shape in plan view, and has an overall size substantially equal to that of the upper sandwiching piece 11.

  As shown in FIGS. 2 and 3, the attachment member 3 is initially in a state in which the thin hinge 10 is opened. Two rectangular through-holes 13 are formed near both ends of the upper clamping piece 11 of the attachment member 3, and these through-holes 13 are provided corresponding to the locking holes 9 formed in the vehicle body panel side flange 8. ing. The shape and size of the through hole 13 are substantially equal to the shape and size of the locking hole 9.

  A V-shaped groove 14 is formed in the central portion of the lower holding piece 12 of the mounting member 3 along the longitudinal direction thereof, and a flat surface portion 15 is provided on the side of the V-shaped groove 14 (the side away from the thin hinge 10). Is provided. The side end of the flat portion 15 is bent in an arc shape in a direction away from the upper sandwiching piece 11.

  The flat surface portion 15 is provided with small convex portions 16 at two locations corresponding to the engagement holes 7 of the bumper side flange 4. The convex portion 16 forms a hexahedron, and an inclined surface 16 </ b> A is formed on a surface of the six surfaces that is closer to the side end of the planar portion 15.

  The V-shaped groove 14 is provided with a pair of leg portions 17 corresponding to each of the through holes 13. Each leg portion 17 is formed of a plate member having elasticity, and a claw portion 18 is provided at the tip of the plate member. As shown in FIG. 4, the claw portions 18 are provided so as to protrude toward the opposite sides of one side surface 17 </ b> A of each leg portion 17, and the other side surface 17 </ b> B without the claw portion is back-to-back. In this embodiment, the distance S between the side surfaces 17A, 17A of the pair of leg portions 17 is set to be substantially equal to the long side length L1 (see also FIG. 3) of the through hole 13 of the upper clamping piece 11. Yes. In addition, the space | interval between the nail | claw parts 18 and 18 is longer than the long side length L1 of the through-hole 13. As shown in FIG.

  As shown in FIG. 5, the leg portion 17 has a hexagonal shape, and two of the six sides are fixed to the V-shaped groove 14. Of the remaining four sides, one upper side is a hypotenuse 17C. In this embodiment, the width W1 of each leg portion 17 is set to be substantially equal to the short side length L2 (see also FIG. 3) of the through hole 13 of the upper clamping piece 11. The width W2 of the top side 17D above the oblique side 17C is set shorter than the short side length L2 of the through hole 13.

  In the present embodiment, the thin hinge 10, the upper clamping piece 11, the lower clamping piece 12, and the leg portion 17 are made of metal or resin, and the convex portion 16 is made of resin.

  Next, in the bumper mounting structure configured as described above, a procedure for mounting the bumper side 1 to the vehicle body panel 2 will be described with reference to FIGS.

  First, the attachment member 3 shown in FIG. 2 or FIG. 3 is bent by the thin hinge 10, and the leg portion 17 provided on the lower clamping piece 12 is inserted into the through hole 13 formed in the upper clamping piece 11. The leg portion 17 is provided with a claw portion 18 at the tip thereof. Since the leg portion 17 itself has elasticity, when the leg portion 17 is inserted into the through hole 13, the claw portion 18 is inserted into the through hole. Even if it hits the inner edge of 13, the pair of leg portions 17 is slightly deformed in the direction in which the tips approach each other, thereby enabling smooth insertion.

  After inserting the leg portion 17 into the through hole 13, the lower clamping piece 12 tries to return to the original position by the spring back of the mounting member 3, but the interval S (see FIG. 4) between the leg portions 17, 17 is Since it is substantially equal to the long side length L1 (see FIG. 4), the claw portion 18 is caught on the inner edge of the through-hole 13, and the frictional force at this time and the spring back of the mounting member 3 are balanced, and the leg portion The state where 17 is inserted through the through hole 13 can be maintained. As a result, the upper clamping piece 11 and the lower clamping piece 12 are arranged to face each other with a predetermined gap G (see FIG. 6). The attachment member 3 in FIG. 1 shows this state.

  When the attachment member 3 is bent by the thin hinge 10, the lower sandwiching piece 12 rotates about the thin hinge 10, and the leg portion 17 also rotates about the thin hinge 10. At this time, since the upper end of the leg portion 17 is cut as a hypotenuse 17C, the upper end of the leg portion 17 is not caught in the through hole 13.

  Next, prior to attaching the bumper side 1 to the vehicle body panel 2, the attachment member 3 is fixed to the vehicle body panel side flange 8 (arrow A in FIG. 1). In the mounting member 3 in which the leg portion 17 is inserted into the through hole 13, the tip end of the leg portion 17 protrudes from the through hole 13, and the tip end of the protruding leg portion 17 enters the locking hole 9 of the vehicle body panel side flange 8. Fit. Since the shape and size of the locking hole 9 are substantially equal to the shape and size of the through-hole 13, even when the claw portion 18 is present at the tip of the leg portion 17, the leg is the same as when inserted through the through-hole 13. The tip of the portion 17 can be easily fitted into the locking hole 9. In this way, the attachment member 3 can be fixed to the vehicle body panel side flange 8.

  FIG. 6 shows a state in which the attachment member 3 is fixed to the vehicle body panel side flange 8. When the mounting member 3 is fixed to the vehicle body panel side flange 8, the claw portion 18 at the tip of the leg portion 17 is engaged with the locking hole 9 and the through hole 13 by the elastic force of the leg portion 17, and the claw portion 18 is engaged. A frictional force is generated between the stop hole 9 and the inner edge of the through hole 13, and the attachment member 3 is fixed to the vehicle body panel 2 by the frictional force.

  Next, the bumper side flange 4 of the bumper side 1 is press-fitted into the gap G between the upper clamping piece 11 and the lower clamping piece 12 (arrow B in FIG. 1). FIG. 7 shows how the bumper side flange 4 of the bumper side 1 is press-fitted. Since the thickness t of the bumper side flange 4 is formed to be thicker than the gap G, when the bumper side flange 4 is press-fitted into the gap G, the gap G is expanded as shown in FIG. In FIG. 7, since the side end of the flat portion 15 is bent in an arc shape in a direction away from the upper clamping piece 11, the bumper side flange 4 can be easily press-fitted into the gap G.

  When the bumper side flange 4 is further press-fitted into the gap G, as shown in FIG. 9, the tip of the center portion 4A (see FIG. 1) of the bumper side flange 4 abuts on the convex portion 16 on the lower sandwiching piece 12. An inclined surface 16A (see FIG. 3) is formed on the convex portion 16, and the tip of the central portion 4A of the bumper side flange 4 is guided by the inclined surface 16A and reaches the upper surface of the convex portion 16. As a result, the gap G is further expanded.

  When the bumper side flange 4 is completely press-fitted between the upper sandwiching piece 11 and the lower sandwiching piece 12 (that is, the gap G), a part of the leg portion 17 is fitted into the recess 6 of the bumper side flange 4 and the bumper side flange is fitted. The four protruding portions 5 enter between the pair of leg portions 17, and widen the interval S (see FIG. 4) between the pair of leg portions 17. As a result, the claw portion 18 at the tip of the leg portion 17 is pressed against the inner edge of the locking hole 9 of the vehicle body panel side flange 8, so that the mounting member 3 is firmly fixed to the vehicle body panel side flange 8. Note that the width of the protruding portion 5 is slightly larger than the pair of intervals S.

  Further, when the bumper side flange 4 is completely press-fitted between the upper sandwiching piece 11 and the lower sandwiching piece 12, the convex portion 16 provided on the lower sandwiching piece 12 engages with the engagement hole 7 of the bumper side flange 4. . Then, the lower holding piece 12 that has been spread is rotated in a direction in which the distance from the upper holding piece 11 is reduced, and the back surface of the bumper side flange 4 is brought into close contact with the flat portion 15 of the lower holding piece 12. As a result, the bumper side flange 4 is fixed to the attachment member 3, and the bumper side 1 is firmly attached to the vehicle body panel 2.

  According to the present embodiment, since the bumper side flange 4 is press-fitted into the gap G between the upper clamping piece 11 and the lower clamping piece 12, a gap is formed on the mating surface between the vehicle body panel side flange 8 and the bumper side flange 4. The appearance quality can be prevented from deteriorating.

  Further, the ends of the pair of leg portions 17 inserted through the through holes 13 of the upper clamping piece 11 are fitted into the locking holes 9 formed in the vehicle body panel side flange 8, and the inner edges of the locking holes 9 are fitted. Since it is locked, the bumper side 1 can be reliably held on the vehicle body panel 2 for a long period of time, and it is possible to suppress the occurrence of play in the bumper side 1.

  Further, when the bumper side flange 4 is press-fitted into the gap G between the upper sandwiching piece 11 and the lower sandwiching piece 12, the convex portion 16 of the lower sandwiching piece 12 engages with the engagement hole 7 of the bumper side flange 4. The side flange 4 is securely fixed to the mounting member 3, and the bumper side 1 can be firmly fixed to the vehicle body panel 2. In this case, since the back surface of the bumper side flange 4 is in close contact with the flat portion 15 of the lower sandwiching piece 12, the posture of the bumper side flange 4 can be stabilized, and the bumper side 1 can be more firmly fixed to the vehicle body panel 2. it can.

It is a disassembled perspective view which shows the bumper attachment structure which concerns on this invention. It is a perspective view of an attachment member. It is the perspective view which showed the detail of the attachment member. It is a figure explaining the positional relationship of the leg part of a lower clamping piece, and the through-hole of an upper clamping piece. It is a figure explaining the positional relationship of the leg part of a lower clamping piece, and the through-hole of an upper clamping piece when it sees from the direction different from FIG. It is a figure which shows a mode that the attachment member was fixed to the vehicle body panel side flange. It is a figure which shows a mode that a bumper side flange is press-fit in the clearance gap between an upper clamping piece and a lower clamping piece. FIG. 8 is a diagram illustrating a state in which the bumper side flange is further press-fitted into the gap between the upper clamping piece and the lower clamping piece following FIG. 7. FIG. 9 is a diagram illustrating a state in which a bumper side flange is further press-fitted into a gap between the upper sandwiching piece and the lower sandwiching piece following FIG. 8. It is a figure which shows a mode that the bumper side flange was completely press-fitted in the clearance gap between an upper clamping piece and a lower clamping piece.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bumper side 2 Car body panel 3 Mounting member 4 Bumper side flange 5 Protruding part 7 Engagement hole 8 Car body panel side flange 9 Locking hole 10 Thin-walled hinge 11 Upper clamping piece 12 Lower clamping piece 13 Through hole 16 Convex part 17 Leg part 18 Claw G Gap

Claims (5)

A bumper side flange and a vehicle body panel side flange projecting inward of the vehicle body are provided at the bumper edge and the vehicle body panel edge, respectively, and the bumper side flange is coupled to the vehicle body panel side flange by using an attachment member. Bumper mounting structure attached to the panel,
The mounting member has an upper clamping piece and a lower clamping piece connected to each other via a thin hinge, the lower clamping piece has a pair of elastic legs, and the upper clamping piece has a through hole. Each provided, and when bent by the thin hinge, the leg portion is inserted into the through-hole, and the upper sandwiching piece and the lower sandwiching piece are arranged to face each other with a gap,
By fitting the front ends of the pair of leg portions inserted into the through holes into locking holes formed in the body panel side flange and locking the mounting members to the locking body, While fixing to the panel side flange,
The bumper mounting structure, wherein the bumper side flange is press-fitted into the gap between the upper sandwiching piece and the lower sandwiching piece.   A protrusion is formed on the bumper side flange, and when the bumper side flange is press-fitted into the gap, the protrusion enters between the pair of legs to widen the gap between the pair of legs, The bumper mounting structure according to claim 1, wherein the ends of the pair of leg portions are pressed against the inner edge of the locking hole.   The bumper mounting structure according to claim 2, wherein a claw portion is provided at a tip of the pair of leg portions, and the claw portion is locked to an inner edge of the locking hole.   2. The bumper mounting according to claim 1, wherein a flat portion is formed on the lower clamping piece, and a back surface of the bumper side flange is in close contact with the flat portion when the bumper side flange is press-fitted into the gap. Construction. The bumper side flange is provided with an engagement hole, and the planar portion is provided with a projection that can be engaged with the engagement hole. When the bumper side flange is press-fitted into the gap, the projection is The bumper mounting structure according to claim 4, wherein the bumper mounting structure is engaged with a joint hole.

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