JP2006082729A - Front bumper water shutoff structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front bumper water shutoff structure capable of being embodied at low cost. <P>SOLUTION: A water shutoff part 26 is provided between a front bumper 1 and a front cross member 24 to shut off splashing, and PP hinge(s) 31 is formed extending between a bottom edge flange 14 of the front bumper 1 and the water shutoff part 26. The water shutoff part 26 is configured with a riser wall 32 formed upright at the tail of the bottom edge flange 14 in the installed condition and a backward extension surface 33 extending to behind R a vehicle from the riser wall 32, and the backward extension surface 33 is secured to the front cross member 24 by bolt(s) 34. Forming the water shutoff part 26 capable of being folded by the PP hinge 31 allows generating the pre-folded condition 51 in which the riser wall 32 of the water shutoff part 26 is arranged outside the moving region where dies to form the front bumper 1 are moved when the dies are opened away and the post-folded condition 52 in which the riser wall 32 is located within the moving region and arranged rising upright with respect to the bottom edge flange 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a front bumper water-insulating structure that blocks jumping up from a lower portion of a front bumper.

  Conventionally, as shown in FIG. 3, a front bumper 101 is provided at the front of the vehicle.

  As shown in FIG. 4, flanges 111, 111 extending inward are formed on the upper and lower edges of the front bumper 101, and a water shielding plate 112 is formed on the lower edge flange 111. Is fixed.

  The water shielding plate 112 includes a fixed surface 121 that is fixed to the flange 111 of the front bumper 101, a rising surface 122 that stands above the fixing surface 121, and a rear that extends from the rising surface 122 toward the vehicle rear R. A crank shape is formed by the extending surface 123.

  The water shielding plate 112 is fixed by a rivet 131 in a state where the fixing surface 121 is placed on the flange 111, and the rear extending surface 123 extending to the rear side R of the vehicle constitutes a vehicle body 134. The front cross member 135 is fixed to the lower surface of the front cross member 135 with bolts 136. Accordingly, the water shielding plate 112 is configured to be bridged between the front bumper 101 and the front cross member 134, and configured to be able to block the jumping up from the lower part of the front bumper 101. Yes.

  However, in such a front bumper water shielding structure, a water shielding plate 112 provided between the front bumper 101 and the vehicle body 134 must be prepared separately, resulting in an increase in the number of parts and cost reduction. It was an impediment.

  This invention is made | formed in view of such a conventional subject, and it aims at providing the front-bumper water-impervious structure which can aim at cost reduction.

  In order to solve the above-mentioned problem, in the front bumper water-impervious structure of the present invention, a jump is made between the flange formed at the lower edge of the front bumper and the mounting point of the vehicle body set higher than the flange. A front bumper water shielding structure in which a water shielding portion for blocking is provided, and a standing wall that eliminates a height difference between the flange and the attachment point of the vehicle body is provided in the water shielding portion. The water portion is integrally formed, and a thin hinge portion that allows the water shield portion to be bent with respect to the flange extends in the vehicle width direction between the water shield portion and the front bumper. A state before bending in which the upright wall is arranged outside the moving area where the mold is moved when the mold for forming the front bumper is opened, and the upright wall is arranged in the moving area and the flange To stand against Was formable constructed a state after folding.

  That is, the water shielding portion that blocks the jumping is integrally formed with the front bumper. For this reason, the number of parts is reduced as compared with the case where the water shielding plate for preventing splashing is formed of a separate member from the front bumper. Moreover, since the said water-impervious part is integrally formed with the said front bumper, the fixed work process to the said front bumper of the said water-impervious part is reduced.

  Here, the flange of the front bumper on which the water shielding portion is provided is set at a lower position than the vehicle body, and the water shielding portion stands up to the flange and reaches the attachment point to the vehicle body. It is necessary to set up a standing wall that eliminates the height difference. However, a moving region of the mold to be opened is set above the flange and in the extending direction of the flange, and the standing wall can be arranged in the moving region at the time of mold forming. Can not.

  Therefore, a hinge portion is provided between the water-impervious portion and the front bumper to form a state before bending in which the upright wall is disposed outside the moving region and a state after bending that is disposed in the moving region. Configured to be possible. For this reason, at the time of shaping | molding, the said water shielding part provided with the said standing wall can be integrally formed in a front bumper, without using a slide type | mold etc. by setting it as the said state before bending. Moreover, the height difference from the said flange to the said attachment point can be eliminated by the said standing wall of the said water-impervious part by setting it as the state after the bending at the time of attachment.

  As described above, in the front bumper water-impervious structure of the present invention, since the water-impervious portion that blocks the jump-up is integrally formed with the front bumper, the water-blocking plate that blocks the jump-up is configured as a separate member from the front bumper. Compared with the conventional case, the number of parts can be reduced, and the cost can be reduced.

  In addition, since the work of fixing the water shielding portion to the front bumper can be reduced, the mounting work is facilitated and the working time can be shortened.

  And, by providing a hinge part between the water-impervious part and the front bumper, the water-impervious part provided with an upright wall that stands up with respect to the flange can be provided on the front bumper without using a slide mold or the like. It can be integrally formed.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a front bumper 1 having a front bumper water-impervious structure according to the present embodiment, and the front bumper 1 is a device that is provided in the front part of a vehicle and cushions an impact at the time of a collision.

  The front bumper 1 is made of a synthetic resin and is molded by a mold. The front bumper 1 is formed in a U shape by a front surface portion 11 constituting the vehicle front F side and rear extending portions 12 and 12 extending from the both ends of the front surface portion 11 in the vehicle width direction to the vehicle rear R. ing. An upper edge flange 13 extending inward is integrally formed on the upper edge of the front bumper 1, and a lower edge flange 14 extending inward is also integrally formed on the lower edge of the front bumper 1. Yes. A laterally long opening 15 is formed at the center of the front face 11, and an intermediate flange 16 extending toward the vehicle rear R is formed on the opening edge as shown in FIG. It is formed over. The front bumper 1 is reinforced by the flanges 13, 14, 16, and the mold for forming the front bumper 1 can be opened in the front-rear direction in which the flanges 13, 14, 16 extend. It is configured.

  A front cross member 24 constituting a vehicle body 23 formed by a lower member 21 and an upper member 22 is provided at a portion on the vehicle rear R side from the front bumper 1, and the lower edge flange 14 of the front bumper 1 is The lower cross member 25 constituting the front cross member 24 is disposed at a position lower than the lower surface 25. A plate-shaped water-impervious portion 26 is provided between the front cross member 24 and the front bumper 1 so as to prevent the leap from the road surface from entering the engine room. It is configured.

  That is, the water shielding portion 26 is integrally formed at the center of the lower edge flange 14 of the front bumper 1, and the lower edge flange is interposed between the water shielding portion 26 and the lower edge flange 14. 14, a PP hinge 31 that is a thin hinge portion that allows the water shielding portion 26 to be bent is extended in the vehicle width direction. The water-impervious portion 26 is configured by a standing wall 32 standing at the rear end of the lower edge flange 14 in the attached state, and a rearward extending surface 33 extending from the standing wall 32 to the vehicle rearward R. Bolt holes 35,... Into which the bolts 34 are inserted are formed in the extending surface 33.

  Thus, the bolt 34 inserted through the bolt insertion hole 35 is screwed into the weld nut 42 provided at the attachment point 41 of the lower member 21 with the rearward extending surface 33 in contact with the lower surface 25 of the lower member 21. Thus, the rear end portion of the water shielding portion 26 can be fixed to the front cross member 24, and the lower edge flange can be formed by raising the standing wall 32 with respect to the lower edge flange 14. 14 and the height difference between the lower edge flange 14 and the attachment point 41 of the front cross member 24 set at a higher position than the lower edge flange 14 can be eliminated.

  The water shielding portion 26 is foldable by the PP hinge 31 formed between the lower edge flange 14 and forms the front bumper 1 as shown by a solid line in FIG. As shown by the broken line state in FIG. 2 and the state before bending 51 in which the upright wall 32 of the water shielding portion 26 is disposed outside the moving region where the mold is moved when the mold is opened. An upright wall 32 is arranged in the moving region so as to form a post-bending state 52 that stands up with respect to the lower edge flange 14.

  In the present embodiment according to the above configuration, the water shielding portion 26 that blocks the jumping is integrally formed with the front bumper 1. For this reason, the number of parts can be reduced and the cost can be reduced as compared with the conventional structure in which the water shielding plate for preventing the flip-up is formed of a separate member from the front bumper.

  Further, the water shielding portion 26 is formed integrally with the front bumper 1. For this reason, the fixed work process to the said front bumper 1 of the said water-impervious part 26 can be reduced. As a result, the mounting operation can be facilitated and the working time can be shortened.

  Here, the lower edge flange 14 of the front bumper 1 on which the water shielding portion 26 is provided is set at a position lower than the vehicle body 23, and the water shielding portion 26 stands up with respect to the lower edge flange 16. Thus, it is necessary to set up the standing wall 32 that eliminates the height difference up to the attachment point 41 to the vehicle body 23. However, a moving region of the mold to be opened is set above the lower edge flange 14 and in the extending direction of the lower edge flange 14, and when the mold is molded, the upstanding wall 32 is set to the above-described standing wall 32. Cannot be placed in the moving area.

  Therefore, in the present embodiment, a pre-bending state 51 in which a PP hinge 31 is provided between the water shielding portion 26 and the front bumper 1, and the upright wall 32 is disposed outside the moving region, The post-bending state 52 disposed in the moving region can be formed. For this reason, at the time of molding, by setting the pre-bending state 51, the water-impervious portion 26 having the upright wall 32 can be integrally formed with the front bumper 1 without using a slide mold or the like. Moreover, at the time of attachment, the height difference from the lower edge flange 14 to the attachment point 41 can be eliminated by the standing wall 32 of the water shielding portion 26 by setting the state 52 after bending.

It is a perspective view which shows one embodiment of this invention. It is sectional drawing which shows the principal part of the embodiment. It is a perspective view which shows the conventional front bumper waterproof structure. It is sectional drawing which shows the principal part of the same prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front bumper 14 Lower edge flange 23 Car body 24 Front cross member 26 Water shielding part 31 PP hinge 32 Standing wall 41 Attachment point 51 State before bending 52 State after bending

Claims (1)

A water shielding part is provided between a flange formed on the lower edge of the front bumper and a mounting point of the vehicle body set higher than the flange, and the flange and the vehicle body are provided in the water shielding part. In the front bumper impermeable structure in which a standing wall that eliminates the height difference from the mounting point is set,
The front bumper and the water-impervious portion are integrally formed, and a thin-walled hinge portion is formed between the water-impervious portion and the front bumper so that the water-impervious portion can be bent with respect to the flange. Extending before the mold for molding the front bumper, and when the mold is moved, the standing wall is disposed outside the moving area, and the standing wall is placed in the moving area. A front bumper impermeable structure characterized in that it can be formed in a state after being bent and placed upright with respect to the flange.

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