JP5034846B2 - Vehicle back door reinforcement structure - Google Patents

Description

  The present invention relates to a back door reinforcing structure for a vehicle that reinforces the back door in a back door provided so that an opening at the rear of a vehicle body can be opened and closed via a hinge (back door hinge) at the top.

  Conventionally, as a back door reinforcing structure for a vehicle in the above-described example, there is a structure disclosed in Patent Document 1.

  That is, as shown in FIG. 9, a back door 91 is provided that covers an opening at the rear of the vehicle body through an upper hinge so as to be opened and closed. The back door 91 is composed of an inner panel 92 and an outer panel 93. A cut-and-raised portion 94 extending toward the outer panel 93 is formed on the panel 92, and a bent piece 94a of the cut-and-raised portion 94 is adhered to the inner surface of the outer panel 93 via a foam sealer or an adhesive 95. The back door 91 is configured to improve the rigidity.

  In the figure, arrow F indicates the front of the vehicle, arrow R indicates the rear of the vehicle, arrow IN indicates the inside of the vehicle, and arrow OUT indicates the outside of the vehicle.

The configuration of Patent Document 1 shown in FIG. 9 is a back door 91 of a one-box car. However, in a back door of a hatchback vehicle in which a deck portion is provided at the rear portion (inclined rear portion) of the door glass, this level of reinforcement is not possible. In addition, the torsional rigidity is insufficient, and particularly when running on rough roads, there is a problem that vibrations and low-frequency booming noises are generated.
JP-A-6-55938

In view of this, the present invention provides a reinforcement that extends in the vehicle width direction between the outer panel and the inner panel constituting the deck portion of the rear portion of the door glass, and is an upper surface portion that is positioned on the deck portion of the reinforcement. And the lower surface of the outer panel with an adhesive, and the longitudinal wall extending toward the inner panel is formed at the end of the reinforcement in the vehicle width direction , so that the torsional rigidity in the vehicle width direction of the back door deck is increased. In particular, it is an object of the present invention to provide a vehicle back door reinforcement structure capable of suppressing vibration and low-frequency booming noise when traveling on rough roads.

A vehicle back door reinforcement structure according to the present invention is provided in a vehicle back door in which an opening at a rear part of a vehicle body is provided so as to be openable and closable via a hinge provided at an upper part, and a deck part is provided at a rear part of a door glass. A reinforcement is provided between the outer panel and the inner panel constituting the deck portion so as to extend in the vehicle width direction, and the upper surface portion located on the deck portion of the reinforcement and the lower surface portion of the outer panel are bonded to each other. agent are joined via a Rutotomoni, in which vertical walls are formed to extend in the inner panel side in the vehicle width direction end portions of the reinforcement.

  According to the above configuration, the reinforcement that extends in the vehicle width direction is provided, and the upper surface portion of the reinforcement corresponding to the deck portion and the lower surface portion of the outer panel are joined by the adhesive. It is possible to improve the torsional rigidity in the vehicle width direction of the back door deck portion, and in particular, it is possible to suppress the occurrence of vibrations and low-frequency booming noise when traveling on rough road surfaces.

Moreover, according to the said structure, the torsional rigidity of the back door deck part of the vehicle width direction can further be improved by the vertical wall extended to the inner panel side of the edge part of a vehicle width direction.

  In one embodiment of the present invention, a ring-shaped raised portion that is raised on the outer panel side and is elongated in the vehicle width direction is formed on the reinforcement, and the raised portion is joined to the outer panel.

  According to the above configuration, the torsional rigidity in the vehicle width direction of the back door deck portion can be further improved by the ring-shaped raised portion elongated in the vehicle width direction.

  In one embodiment of the present invention, a reinforcing rib recessed in the raised portion is formed.

  According to the said structure, the torsional rigidity of the vehicle width direction of a back door deck part can be improved further by the rib for reinforcement recessedly provided in the protruding part. Further, since the reinforcing rib is recessed in the raised portion, it does not hinder the interposition of the adhesive.

  In one embodiment of the present invention, the reinforcement includes a front portion of the reinforcement and a ring-shaped ridge formed in the reinforcement and elongated in the vehicle width direction. The connection part which protrudes in several places and connects in the front-back direction is formed.

  According to the above configuration, the torsional rigidity of the back door deck portion can be further improved by the connecting portions that protrude at a plurality of locations in the vehicle width direction and connect the reinforcement front portion and the raised portion.

  In one embodiment of the present invention, the reinforcement is used for mounting a high-mount stop lamp and extends longer in the vehicle width direction than the stop lamp mounting portion.

  According to the above configuration, it is possible to effectively improve the torsional rigidity of the back door deck without increasing the number of parts by effectively using the reinforcement for attaching the high mount stop lamp.

According to the present invention, the reinforcement is provided so as to extend in the vehicle width direction between the outer panel and the inner panel constituting the deck portion at the rear portion of the door glass, and the upper surface portion located on the deck portion of the reinforcement. And a lower wall of the outer panel are joined with an adhesive, and a vertical wall extending toward the inner panel is formed at the end of the reinforcement in the vehicle width direction , improving the torsional rigidity of the back door deck in the vehicle width direction. In particular, there is an effect that it is possible to suppress vibration and low-frequency booming noise when traveling on rough roads.

The purpose of improving the torsional rigidity of the back door deck in the vehicle width direction and suppressing vibration and low-frequency muffled noise when driving on rough roads is to open and close the rear opening of the vehicle body via a hinge provided at the top. In a vehicle back door provided with a deck portion at the rear of the door glass, a reinforcement is extended in the vehicle width direction between the outer panel and the inner panel constituting the deck portion. The upper surface portion located on the deck portion of the reinforcement and the lower surface portion of the outer panel are joined with an adhesive, and a vertical wall extending toward the inner panel is formed at the end portion in the vehicle width direction of the reinforcement. Realized by the configuration.

  An embodiment of the present invention will be described in detail with reference to the drawings.

  The drawings show a vehicle back door reinforcement structure. First, a vehicle body structure will be described with reference to FIG.

  In FIG. 1, roof side rails 2 and 2 are provided on the left and right front pillars so as to extend rearward from the left and right sides of the roof portion 1 and 1, while the left and right sides of the floor panel are closed in the vehicle front-rear direction. Side sills 3 and 3 having a cross-sectional structure are provided, and an intermediate portion in the front-rear direction of the side sill 3 and an intermediate portion in the front-rear direction of the roof side rail 2 are connected in the vertical direction by a center pillar 4 as a vehicle body rigid member.

  In addition, the left and right front door openings 6 surrounded by the hinge pillar 5, the front pillar 1, the roof side rail 2, the center pillar 4, and the side sill 3 are formed, and the center pillar 4, the roof side rail 2, The left and right rear door openings 7 surrounded by the side sill 3 are formed.

  The vehicle of this embodiment is of a five-door hatchback type, and is provided with a back door 9 that covers the opening 8 at the rear of the vehicle body so that it can be opened and closed.

  A rear header (not shown) extending in the vehicle width direction is provided between the rear portions of the left and right roof side rails 2 and 2, and the upper portion of the back door 9 is hinged (in the drawing, only the position where the hinge is attached is indicated by a dotted line α). As shown, the hinge is configured to be openable and closable on the rear header via a body side hinge bracket, a door side hinge bracket, and a hinge pin that connects these brackets. The opening 8 described above is surrounded by a rear pillar continuous with the roof side rail 2, a rear header, and a rear end portion.

  The above-described back door 9 includes a door glass 10 (including those made of synthetic resin), a high-mount stop lamp 11, and a tail lamp 12.

  In FIG. 1, 13 is a rear fender panel, 14 is a fuel lid, and 15 is a rear bumper.

  FIG. 2 is a perspective view showing a state in which a part of the reinforcement is attached to the inner panel constituting the back door 9, and FIG. 3 is a view showing that all the reinforcements are attached to the inner panel constituting the back door 9. 4 is an enlarged perspective view of the main part of FIG. 3, FIG. 5 is a plan view of the main part of FIG. 4, FIG. 6 is a cross-sectional view of the portion corresponding to the AA line of FIG. FIG. 6 is a cross-sectional view of a portion corresponding to line BB in FIG. 5.

  A back door reinforcing structure for a vehicle will be described with reference to FIGS.

  The above-described back door 9 is formed by joining the inner panel 16 shown in FIGS. 2 and 3 and the outer panel 17 shown in FIGS. 6 and 7, and the rear portion of the door glass 10 shown in FIG. A substantially horizontal deck portion D is formed at the inclined lower end portion of the door glass 10.

  In FIG. 2, the inner panel 16 has an upper piece portion 16A extending in the vehicle width direction at the upper portion thereof, left and right side piece portions 16B and 16B extending obliquely downward from both left and right ends of the upper piece portion 16A, and the left and right sides thereof. A deck portion 16D for connecting the lower portions of the piece portions 16B, 16B in the vehicle width direction and a lower piece portion 16C extending downward from the deck portion 16D are integrally formed.

  An opening 18 for the door glass 10 is formed between the above-described upper piece portion 16A, the left and right side piece portions 16B and 16B, and the deck portion 16D, and the opening portion 19 is formed in the deck portion 16D. The openings 20 and 20 for attaching the tail lamp 12 and the opening 21 for reducing the weight are formed in the lower piece portion 16C.

  In addition, left and right connecting pieces 22, 22 extending toward the rear side are cut off on the lower piece portion 16 </ b> C between the opening 20 located on the side and the opening 21 located in the center in the vehicle width direction. A plurality of, for example, two beads 23, 23 are integrally formed on each of the connecting pieces 22 to raise the rigidity of the connecting pieces 22.

  As shown in FIG. 6, the connecting piece 22 described above is for joining the back surface of the rear end bent portion 22 a and the front surface of the outer panel 17 via an adhesive 24. In addition, the cut-and-raised hole 25 is formed in the lower piece portion 16C by the cut-and-raised formation of the connecting piece 22 described above.

  Further, the inner panel 16 has an inverted L-shaped right and left reinforcement straddling the end portion in the vehicle width direction of the upper piece portion 16A, the side piece portion 16B, and the front side portion of the deck portion 16D. 26 and 26 are joined to improve the rigidity of the inner panel 16.

  The left and right reinforcements 26 and 26 are formed substantially symmetrically as shown in FIG.

  In addition, a reinforcement 27 is joined and fixed to the center of the lower piece portion 16C of the inner panel 16 for the purpose of improving the rigidity of the door lock portion with respect to the body of the back door 9.

  Moreover, as shown in FIGS. 3 to 7, a reinforcement 28 is provided to extend in the vehicle width direction between the outer panel 17 and the inner panel 16 constituting the deck portion D (see FIG. 1). ing.

  The reinforcement 28 is a reinforcement for attaching the high mount stop lamp 11 shown in FIG. 1, and corresponds to the stop lamp attaching hole 29 formed in the outer panel 17 shown in FIG. A stop lamp mounting hole 30 is also formed in the center of the vehicle 28 in the vehicle width direction. As shown in FIGS. 3 and 4, the reinforcement 28 is located on the vehicle more than the stop lamp mounting part (see the stop lamp mounting hole 30). It extends further to the left and right in the width direction.

  As shown in FIGS. 6 and 7, the upper surface portion located on the deck portion D of the reinforcement 28 and the lower surface portion of the outer panel 17 at the corresponding position are joined via an adhesive 31.

  Further, as shown in FIGS. 3 to 7, the reinforcement 28 has an elongated ring shape (closed loop shape) that protrudes upward corresponding to the outer panel 17 side, that is, the deck portion D, and extends in the vehicle width direction. The raised portion 32 is integrally formed.

  As shown in a plan view of the reinforcement 28 in FIG. 5, the raised portion 32 includes a front piece 32a extending in the vehicle width direction, a rear piece 32b extending in the vehicle width direction, and a vehicle width direction. Side parts 32C and 32C that connect these parts 32a and 32b in the front-rear direction on both sides are ridges that are elongated in the vehicle width direction and are continuously formed in a closed loop shape, as shown in FIGS. The raised portion 32 is joined to the lower surface portion of the outer panel 17 of the deck portion D through the adhesive 31.

  In addition, a plurality of lightening openings 34 are formed in the flat portion 33 surrounded by the ring-shaped raised portion 32 described above.

  Furthermore, a concave reinforcing rib 35 is formed on the above-described raised portion 32. In this embodiment, ribs 35 that are discontinuous with respect to the ring-shaped raised portion 32 and are divided into a plurality of portions are integrally formed so as to be recessed downward from the raised portions 32. , The rigidity of the raised portion 32 is improved.

  In addition, as shown in FIGS. 4 and 5, the vertical wall 36 extending integrally to the deck portion 16 </ b> D side of the inner panel 16, that is, the lower side, is integrally formed at both ends in the vehicle width direction of the above-described reinforcement 28. The lower portion 36 a of the vertical wall 36 is joined and fixed to the deck portion 16 D of the inner panel 16.

  Further, as shown in FIG. 4, a skirt portion 37 extending downward is integrally formed on the rear piece portion 32b of the raised portion 32, and as shown in FIGS. 6 and 7, the skirt portion 37 is formed. The lower part 37a is fixedly bonded to the inner panel 16.

  Further, the above-described reinforcement 28 includes a front portion 28a of the reinforcement 28 and a ring-shaped raised portion 32 formed in the reinforcement 28 and elongated in the vehicle width direction. A connecting portion 38 that protrudes at a location and connects in the front-rear direction is integrally formed.

  Here, as shown in FIGS. 6 and 7, the front portion 28 a of the above-described reinforcement 28 is sandwiched and fixed between the inner panel 16 and the outer panel 17.

  In addition, a plurality of bead portions 41 having openings 40 are integrally formed in the slant portion 39 immediately after the front portion 28a, so that both the weight reduction of the reinforcement 28 and the improvement of the rigidity can be achieved. It is configured. In the figure, arrow F indicates the front of the vehicle, arrow R indicates the rear of the vehicle, and arrow UP indicates the upper side of the vehicle.

  As described above, the vehicle back door reinforcement structure of the embodiment shown in FIGS. 1 to 7 is provided so that the opening 8 at the rear of the vehicle body can be opened and closed via the hinge provided at the top, and the door glass 10 In the vehicle back door 9 provided with the deck portion D at the rear portion, a reinforcement 28 is provided extending in the vehicle width direction between the outer panel 17 and the inner panel 16 constituting the deck portion D, and The upper surface part located in the deck part D of the reinforcement 28 and the outer panel 17 lower surface part are joined via the adhesive 31 (refer FIG.1, FIG.4, FIG.7).

  According to this configuration, the reinforcement 28 extending in the vehicle width direction is provided, and the upper surface portion of the reinforcement 28 corresponding to the deck portion D and the lower surface portion of the outer panel 17 are joined by the adhesive 31. The reinforcement 28 can improve the torsional rigidity in the vehicle width direction of the deck portion D of the back door 9, and in particular, can suppress the occurrence of vibration and low-frequency booming noise when traveling on rough roads.

  Further, a ring-shaped raised portion 32 is formed on the reinforcement 28 on the side of the outer panel 17 and is elongated in the vehicle width direction, and the raised portion 32 is joined to the outer panel 17 (FIG. 5). FIG. 7).

  According to this configuration, the torsional rigidity in the vehicle width direction of the deck portion D of the back door 9 can be further improved by the ring-shaped raised portion 32 elongated in the vehicle width direction.

  Further, a reinforcing rib 35 that is recessed in the raised portion 32 is formed (see FIGS. 5 and 7).

  According to this configuration, the torsional rigidity in the vehicle width direction of the deck portion D of the back door 9 can be further improved by the reinforcing rib 35 recessed in the raised portion 32. Further, since the reinforcing rib 35 is recessed in the raised portion 32, the interposition of the adhesive 31 is not hindered.

  In addition, a vertical wall 36 extending toward the inner panel 16 is formed at the end of the reinforcement 32 in the vehicle width direction (see FIG. 4).

  According to this configuration, the torsional rigidity in the vehicle width direction of the deck portion D of the back door 9 can be further improved by the vertical wall 36 extending toward the inner panel 16 at the vehicle width direction end.

  In addition, the reinforcement 28 includes a front portion 28a of the reinforcement 28 and ring-shaped raised portions 32 formed in the reinforcement 28 that are elongated in the vehicle width direction. The connection part 38 which protrudes and connects in the front-rear direction is formed (see FIGS. 4 and 5).

  According to this configuration, the torsional rigidity of the deck portion D of the back door 9 is further increased by the connecting portion 38 that is raised at a plurality of locations in the vehicle width direction and connects the front portion 28a of the reinforcement 28 and the raised portion 32. Can be improved.

  Further, the reinforcement 28 is used for mounting the high mount stop lamp 11 and extends longer in the vehicle width direction than the stop lamp mounting portion (see the hole edge portion of the stop lamp mounting hole 30) ( (See FIG. 4).

  According to this configuration, it is possible to effectively improve the torsional rigidity of the deck portion D of the back door 9 without increasing the number of components by effectively using the reinforcement 28 for attaching the high mount stop lamp 11.

  FIG. 8 is a plan view of an essential part showing another embodiment of the reinforcement 28. In this embodiment, the ring-shaped raised portion 32 elongated in the vehicle width direction has an intermediate portion and a rear portion of the front piece portion 32a. At least one connecting portion 32d that connects the middle of the piece portion 32b in the front-rear direction is formed integrally with the raised portion 32, and a reinforcing rib 35 is formed in the connecting portion 32d.

  If comprised in this way, the torsional rigidity of the deck part D of the back door 9 in the vehicle width direction can further be improved.

  Even in this configuration, the other configurations, functions, and effects are the same as those in the previous embodiment. Therefore, the same reference numerals in FIG. Detailed description thereof will be omitted.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The stop lamp mounting portion of the present invention corresponds to the stop lamp mounting hole 30 of the embodiment (specifically, the hole edge portion of the mounting hole 30),
The present invention is not limited to the configuration of the above-described embodiment.

The perspective view of the vehicle provided with the back door reinforcement structure of the present invention Perspective view of the back door inner panel with some reinforcements attached Perspective view of the back door inner panel with all reinforcements attached 3 is an enlarged perspective view of the main part of FIG. Top view of reinforcement alone Sectional drawing of the site | part corresponded to the AA line of FIG. Sectional drawing of the site | part corresponded to the BB line of FIG. Plan view showing another embodiment of reinforcement Sectional drawing which shows the back door reinforcement structure of the conventional vehicle

D ... Deck part 8 ... Opening part 9 ... Back door 10 ... Door glass 11 ... High mount stop lamp 16 ... Inner panel 17 ... Outer panel 28 ... Reinforcement 30 ... Stop lamp mounting hole (stop lamp mounting part)
31 ... Adhesive 32 ... Raised portion 35 ... Reinforcing rib 36 ... Vertical wall 38 ... Connection portion

Claims (5)

In the back door of the vehicle in which the opening at the rear of the vehicle body is provided so as to be openable and closable via a hinge provided at the top, and the deck portion is provided at the rear of the door glass,
A reinforcement is provided extending in the vehicle width direction between the outer panel and the inner panel constituting the deck portion,
An upper surface portion located to the deck portion of the reinforcement, the outer panel lower surface part, is bonded via an adhesive Rutotomoni,
A vehicle back door reinforcing structure in which a vertical wall extending toward the inner panel is formed at an end of the reinforcement in the vehicle width direction . The reinforcement is raised on the outer panel side, and a ring-like raised portion elongated in the vehicle width direction is formed.
The back door reinforcing structure for a vehicle according to claim 1, wherein the raised portion is joined to the outer panel. The back door reinforcing structure for a vehicle according to claim 2, wherein a reinforcing rib recessed in the raised portion is formed. The reinforcement includes a front portion of the reinforcement and a ring-shaped protruding portion that is elongated in the vehicle width direction formed in the reinforcement, and is raised at a plurality of locations in the vehicle width direction in the front-rear direction. The back door reinforcing structure for a vehicle according to any one of claims 1 to 3 , wherein a connecting portion to be connected is formed. The back door reinforcing structure for a vehicle according to any one of claims 1 to 4 , wherein the reinforcement is used for attaching a high-mount stop lamp and extends longer in the vehicle width direction than the stop lamp attaching portion.

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