JP2012061957A - Back door device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance rigidity of a door when a resin-made inner and outer panels adhered to each other are employed in the lower part of the door in order to reduce weight of a back door in a vehicle.SOLUTION: Each cross section in a longitudinal direction of the outer edge part of an inner panel 11 is formed in a hat shape opened toward an outer panel 13, wherein outside flanges 40, 41 are respectively adhered onto the outer panel 13. In respective right and left halves of a door 9 in a rear face view of the vehicle 1, a part 40a of an inside flange 40 in the longitudinal direction of the outer edge part of the inner panel 11 is inclined so as to make a first elevation angle θ1 in a longitudinal direction of the part 40a smaller than a second elevation angle θ2 of the first virtual line 49 connecting a pivoting tool 19 and a lock tool 20 and larger than a third elevation angle θ3 of a second virtual line 50 connecting a stopper part 26 and the lock tool 20.

Description

  The present invention relates to a back door device for a vehicle having a resin inner and an outer panel whose lower portions are bonded to each other in order to reduce the weight of the back door.

  Conventionally, there is a back door device for a vehicle described in Patent Document 1 below. According to this publication, a back door device for a vehicle includes a back door that closes a door opening formed on a rear wall of a vehicle body so as to be opened and closed from the rear.

  In order to reduce the weight of the door, the door has a resin inner and outer panel that are bonded to each other as a whole. In this case, each of these panels is made of resin, and the rigidity of the door tends to be low if it remains as it is. Therefore, a rib is provided on the inner panel, and a protruding end edge portion of the rib is bonded to the outer panel, thereby improving the rigidity of the door.

  Further, the vehicle back door device can release a pair of left and right pivot supports for pivotally supporting the upper end portion of the door to the rear wall and a central portion in the left and right direction at the lower end portion of the door to the rear wall. And a locking device for locking. Also, the back door device is usually provided on each of the left and right sides of the middle part in the vertical direction of the door, and a pair of left and right stoppers that press against the rear wall to prevent further forward movement of the door. It has.

JP 2005-8064 A

  By the way, in the above prior art, the width dimension of the bonding portion of the protruding edge portion of the rib with respect to the outer panel is within the range of the plate thickness of the rib. Therefore, the bonding strength of the rib with respect to the outer panel becomes insufficient. There is a possibility that the improvement of rigidity becomes insufficient.

  Therefore, in the conventional technique, the rigidity of the door is improved by providing a plurality of the ribs. However, in this case, the structure of the door becomes complicated and the above-described bonding takes time, so the door forming operation becomes complicated, and furthermore, the provision of a plurality of ribs makes the door lighter. There is a possibility that the mass of the door becomes large against the purpose of making it easier.

  The present invention has been made paying attention to the above-described circumstances, and an object of the present invention is to provide a resin inner and outer panel in which lower portions of the door are bonded to each other in order to reduce the weight of the back door of the vehicle. In this case, the rigidity of the door is improved, and the improvement of the rigidity can be achieved with a simple configuration, the door can be easily formed, and the mass of the door is increased. It is to be able to suppress.

The invention of claim 1 is provided with a back door 9 that closes a door opening 8 formed in the rear wall 4 of the vehicle body 2 so as to be openable and closable from the rear thereof, and a resin inner to which a lower portion 9a of the door 9 is bonded. A pair of left and right pivots 19 and 19 that have outer panels 11 and 13 and pivot the upper end of the door 9 to the rear wall 4, and the center in the left and right direction at the lower end of the door 9 Locking devices 20 that are releasably locked to the wall 4 and provided on the left and right sides of the middle part of the door 9 in the vertical direction, are pressed against the rear wall 4 to prevent further forward movement of the door 9. In a vehicle back door device comprising a pair of left and right stopper portions 26, 26,
Each section in the longitudinal direction of the outer edge of the inner panel 11 has a hat shape that opens toward the outer panel 13, and among them, the outer flanges 40 and 41 are bonded to the outer panel 13, respectively.
In each of the left and right halves of the door 9 in the rear view of the vehicle 1 (FIG. 1), a portion 40a of the inner flange 40 in the longitudinal direction of the outer edge portion of the inner panel 11 is set to a first elevation angle in the longitudinal direction of the portion 40a. θ1 is smaller than the second elevation angle θ2 of the first imaginary line 49 connecting the pivot tool 19 and the lock tool 20, and the third elevation angle of the second imaginary line 50 connecting the stopper portion 26 and the lock tool 20 is set. The vehicle back door device is characterized by being inclined so as to be larger than θ3.

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

The invention according to claim 1 includes a back door that closes a door opening formed on the rear wall of the vehicle body so as to be openable and closable from the rear, and has a resin inner and an outer panel to which lower portions of the door are bonded to each other, A pair of left and right pivots that pivot the upper end of the door to the rear wall, a lock that releasably locks the central part of the lower end of the door in the left-right direction to the rear wall, and upper and lower of the door In a vehicle back door device provided with a pair of left and right stopper portions provided on left and right sides of the middle portion of the direction, and pressed against the rear wall to prevent further forward movement of the door,
Each section in the longitudinal direction of the outer edge of the inner panel has a hat shape that opens toward the outer panel, and the outer flanges are bonded to the outer panel.

  Here, since the inner and outer flanges are bonded in surface contact with the outer panel, the bonding strength of the outer edge portion of the inner panel to the outer panel can be sufficiently increased. Therefore, the rigidity of the door is improved. Further, in this case, the inner flange is bonded to the center side in the surface direction of the outer panel, and therefore, particularly, the improvement of the rigidity of the outer panel is remarkably achieved.

  Further, in each of the left and right halves of the door in the rear view of the vehicle, a part of the inner flange in the longitudinal direction of the outer edge portion of the inner panel is set such that the first elevation angle in the longitudinal direction of the part is the pivot support and the locking tool. Is inclined to be smaller than the second elevation angle of the first imaginary line connecting the stopper portion and the third elevation angle of the second imaginary line connecting the stopper portion and the locking device.

  Here, the pivot support member, the lock member, and the stopper portion are portions that strongly and strongly connect the rear wall of the vehicle body and the door. For this reason, when an external force (including a reaction force) is applied to the door from the rear wall side of the vehicle body, such as when the vehicle is running, each part of the door corresponding to the pivot support, the lock, and the stopper is These are the points of action of the external force. Further, the first and second imaginary lines connecting the parts substantially coincide with the action directions of the external forces starting from the action points.

  Therefore, as described above, the relationship between a part of the inner flange and the first and second imaginary lines is, in short, second elevation angle> first elevation angle> third elevation angle. For a part, the longitudinal direction with higher rigidity can be made closer to the inclination of each acting direction of each external force. Accordingly, since a part of the inner flange firmly supports the external forces directed in the action directions, the rigidity of the door, in particular, the rigidity against the torsion of the door is more reliably achieved.

  And the above-mentioned improvement in the rigidity of the door specified the cross-section of each part in the longitudinal direction of the outer edge part of the inner panel as a hat shape and adhered to the outer panel, and the longitudinal inclined configuration of a part of the inner flange. Since it is not necessary to provide a separate reinforcing material, the improvement in the rigidity of the door can be achieved with a simple configuration. Moreover, since the structure is simple as described above, the door can be easily formed and the increase in the mass can be suppressed.

It is a partial rear view of a vehicle. It is the II-II sectional view taken on the line of FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG. 1. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1.

  In the vehicle back door device of the present invention, in order to reduce the weight of the back door, when the lower part of the door has a resin inner and an outer panel to be bonded to each other, the rigidity of the door is improved. In order to achieve the object of achieving this improvement in rigidity with a simple configuration, the mode for carrying out the present invention is as follows.

  That is, a back door device for a vehicle is provided with a back door that closes a door opening formed on the rear wall of the vehicle body so that the door can be opened and closed from the rear. The lower part of the door has a resin inner and outer panel bonded to each other. A pair of left and right pivots for pivotally supporting the upper end of the door on the rear wall; a lock for releasably locking a central portion of the lower end of the door in the left-right direction to the rear wall; A pair of left and right stopper portions that are provided on the left and right sides of the middle portion of the door in the vertical direction and that press against the rear wall to prevent further forward movement of the door are provided.

  Each cross section in the longitudinal direction of the outer edge portion of the inner panel has a hat shape that opens toward the outer panel, and the outer flange is bonded to the outer panel. In each of the left and right halves of the door in the rear view of the vehicle, a portion of the inner flange in the longitudinal direction of the outer edge portion of the inner panel has a first elevation angle in the longitudinal direction of the portion that connects the pivot support and the locking device. It is inclined so as to be smaller than the second elevation angle of the first imaginary line to be connected and larger than the third elevation angle of the second imaginary line to connect the stopper portion and the locking device.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 denotes a vehicle exemplified by an automobile, and an arrow Fr in the drawing indicates the front in the traveling direction of the vehicle 1. The left and right described below refer to the width direction of the vehicle body 2 toward the front of the vehicle 1.

  The interior of the vehicle body 2 is a casing 3. The vehicle body 2 includes a rear wall 4 that forms a rear surface portion of the vehicle body 2, and a back door device 5 provided on the rear wall 4. The back door device 5 is provided on a vehicle body center line 6 in the width direction of the vehicle body 2 in a rear view of the vehicle 1 (FIG. 1), and is substantially bilaterally symmetric with respect to the vehicle body center line 6.

  The back door device 5 is formed on the rear wall 4 and communicates with the interior and exterior of the vehicle compartment 3. A back door opening 8 that closes the door opening 8 from the rear is openable and closable. A seal 10 is provided which is attached to the opening edge of the door opening 8 and presses against the outer edge of the door 9.

  The door 9 forms the front side (the vehicle compartment 3 side) of the door 9, and an inner panel 11 that closes the door opening 8 as a whole, and a lower portion of the inner panel 11 are overlapped from the rear side to form an adhesive. 12, an outer panel 13 that is bonded to each other by 12, another outer panel 14 that is overlapped on the upper end of the inner panel 11 from behind and bonded to each other by an adhesive, and a window opening 15 that is formed at the top of the inner panel 11. And a window glass 16 that closes the rear from the rear.

  The outer edge portion of the window glass 16 is overlapped on the left and right side opening edge portions of the window opening 15 in the inner panel 11, the upper edge portion of the outer panel 13, and the lower edge portion of the other outer panel 14 from behind, and is adhesive. Are bonded to each other. The inner panel 11 and the outer panels 13 and 14 are resin panels. The door 9 has a substantially closed hollow cross-section structure by the above-described adhesion of the inner panel 11 to the outer panels 13 and 14 and the wind glass 16.

  The back door device 5 includes a pair of left and right pivots 19 and 19 that pivotally support the upper end of the rear wall 4 on the upper end of the rear wall 4 so that the lower 9a side of the door 9 can be turned upward and downward. A locking device 20 that releasably locks the central portion of the lower end portion of the door 9 in the left-right direction to the lower end portion of the rear wall 4, and a midway portion of the inner panel 11 in the lower portion 9a of the door 9 The operation handle 23 provided so as to pass through the through hole 21 formed in the inner panel 11 and pivotally supported by the pivot shaft 22 on the inner panel 11, and the locking device 20 and the operation handle 23 are coupled to each other. And an interlocking body 24 to be operated. When the operation handle 23 is operated, the locking device 20 is interlocked with the operation handle 23 via the interlocking body 24, and the locked state by the locking device 20 is released.

  In addition, the back door device 5 includes a pair of left and right elastic stoppers 26 and 26 projecting forward from the respective portions of the inner panel 11 at the upper ends of the left and right sides of the lower portion 9a of the door 9. ing. These stopper portions 26 and 26 are pressed against the left and right side portions of the rear wall 4 to prevent further forward movement (closing operation) of the door 9.

  The back door device 5 includes a wiper device 28 that wipes the outer surface of the window glass 16. The wiper device 28 includes a motor 30 supported by the inner panel 11 at the lower portion 9 a of the door 9 by a bracket 29, a through hole 31 formed in the outer panel 13 at the lower portion 9 a of the door 9, and the through hole 31. And a wiper 32 attached to the output shaft of the motor 30 protruding outside the vehicle body 2.

  A bulging portion 35 that bulges rearward is formed at a middle portion of the outer panel 13 in the lower portion 9 a of the door 9. The bulging portion 35 is formed at the lower end of the bulging portion 35. An opening 36 is formed to communicate the inside of the housing downward.

  An outer edge portion of the inner panel 11 in the lower portion 9a of the door 9 (hereinafter referred to as an “outer edge portion” of the inner panel 11) has a rectangular frame shape as a whole in a rear view of the vehicle 1 (FIG. 1). ing. Each section in the longitudinal direction of the “outer edge portion” has a lateral hat shape that opens toward the outer panel 13. Specifically, the “outer edge” of the inner panel 11 includes an outer edge main body 39 having a U-shaped cross section that opens toward the outer panel 13, and both end edges in the cross section of the outer edge main body 39. The inner flange 40 is integrally formed on the inner peripheral edge portion, and the outer flange 41 is integrally formed on the outer peripheral edge portion. These inner and outer flanges 40 and 41 are outward flanges projecting outward from the outer edge main body 39, respectively.

  The inner and outer flanges 40 and 41 are respectively bonded to the outer panel 13 with an adhesive 12. As a result, an internal space 42 is formed between the outer edge main body 39 of the “outer edge” of the inner panel 11 and the outer panel 13, that is, the “outer edge” of the inner panel 11 and the outer panel 13 are rigid. A large hollow closed cross-sectional structure is formed.

  As described above, the connection panel 44 is provided on the “outer edge portion” of the inner panel 11 that has a frame shape as a whole and integrally connects the lower portions to each other. The connecting panel 44 constitutes a part of the inner panel 11, and the middle portions in the longitudinal direction of the inner flanges 40, 40 above and below the “outer edge” of the inner panel 11 are integrally connected to each other. The upper and lower portions of the “outer edge” of the inner panel 11 are reinforced. The connecting panel 44 may not be provided. On the other hand, there is provided a trim board 47 that closes the opening of the recess 46 formed by being surrounded by the “outer edge portion” of the inner panel 11 and the outer panel 13 that form a frame shape as described above from the vehicle compartment 3 side. ing.

  The bulging portion 35 and the opening 36 are formed in a portion of the outer panel 13 corresponding to the bottom of the recess 46, and the connection panel 44 that is a part of the inner panel 11 inside the bulging portion 35. The through hole 21 is formed, and the operation handle 23 is provided so as to penetrate the through hole 21. Further, the interlocking body 24 is provided so as to communicate the internal space 42 and the recess 46 below the “outer edge” of the inner panel 11. On the other hand, the main body of the motor 30 of the wiper device 28 is provided in the inner space 42 above the “outer edge” of the inner panel 11, and the upper part of the outer panel 13 corresponding to the upper part of the “outer edge” of the inner panel 11. The through-hole 31 is formed in the top.

  A portion 40a of the inner flange 40 in the longitudinal direction of the “outer edge portion” of the inner panel 11 in the left and right halves of the door 9 with respect to the vehicle body centerline 6 in the rear view of the vehicle 1 (FIG. 1). The first elevation angle θ1 in the longitudinal direction of the portion 40a is smaller than the second elevation angle θ2 of the first imaginary line 49 connecting the pivot tool 19 and the lock tool 20, and the stopper portion 26 and the lock tool 20 Are tilted so as to be larger than the third elevation angle θ3 of the second imaginary line 50 (θ2> θ1> θ3).

  More specifically, the portion 40a of the inner flange 40 corresponds to the upper portion of the side portion extending in the vertical direction in the inner flange 40 having a frame shape as a whole. The first elevation angle θ1 is closer to the second elevation angle θ2 than the third elevation angle θ3. In other words, the longitudinal direction of the portion 40a of the inner flange 40 is greater than the second imaginary line 50. Is also more parallel to the first virtual line 49. A part 40 a of the inner flange 40 is entirely disposed between the first and second virtual lines 49 and 50. The longitudinal direction of the portion 40 a of the inner flange 40 may be substantially parallel to the first imaginary line 49 or the second imaginary line 50.

  In the rear view of the vehicle 1 (FIG. 1), the longitudinal direction of the other portion 40 b corresponding to the lower portion of the side portion of the inner flange 40 is inclined in the direction opposite to the portion 40 a of the inner flange 40. The longitudinal inclination of the other portion 40b of the inner flange 40 may substantially coincide with the longitudinal inclination of the portion 40a.

  The description of the inclined configuration of the part 40a and the other part 40b of the inner flange 40 is for the right half of the back door device 5 in FIG. 1, but the left half of the back door device 5 is the same as described above. It is the composition.

  According to the said structure, each outer part cross section in the longitudinal direction of the outer edge part of the inner panel 11 is made into the hat shape opened toward the outer panel 13 side, and the outer side flanges 40 and 41 are each adhere | attached on the said outer panel 13 among them.

  Here, since the inner and outer flanges 40 and 41 are bonded in surface contact with the outer panel 13, the bonding strength of the outer edge portion of the inner panel 11 to the outer panel 13 can be sufficiently increased. it can. Therefore, the rigidity of the door 9 is improved. Further, in this case, the inner flange 40 is bonded to the center side in the surface direction of the outer panel 13, so that the improvement of the tension rigidity of the outer panel 13 is particularly significantly achieved.

  Further, in each of the left and right halves of the door 9 in the rear view of the vehicle 1 (FIG. 1), the portion 40a of the inner flange 40 in the longitudinal direction of the “outer edge portion” of the inner panel 11 is disposed in the longitudinal direction of the portion 40a. The first elevation angle θ1 is smaller than the second elevation angle θ2 of the first imaginary line 49 connecting the pivotal support 19 and the locking tool 20, and the second imaginary line 50 connecting the stopper portion 26 and the locking tool 20 is present. The inclination angle is larger than the third elevation angle θ3.

  Here, the pivotal support 19, the locking device 20, and the stopper portion 26 are portions that strongly and strongly connect the rear wall 4 of the vehicle body 2 and the door 9 to each other. For this reason, when an external force (including a reaction force) is applied to the door 9 from the rear wall 4 side of the vehicle body 2 such as when the vehicle 1 is traveling, it corresponds to the pivot support 19, the lock tool 20, and the stopper portion 26. Each part of the door 9 serves as an action point of the external force. Further, the first and second virtual lines 49 and 50 connecting the respective parts substantially coincide with the action directions of the external forces starting from the action points.

  Therefore, as described above, the relationship between the portion 40a of the inner flange 40 and the first and second imaginary lines 49 and 50 is, in short, second elevation angle θ2> first elevation angle θ1> third elevation angle θ3. For this reason, for the portion 40a of the inner flange 40, the longitudinal direction with higher rigidity can be made closer to the inclination of each acting direction of each external force. Therefore, the portion 40a of the inner flange 40 firmly supports the external forces directed in the action directions, so that the rigidity of the door 9, particularly the rigidity against the twist of the door 9, is more reliably achieved. The

  Further, as described above, a part 40a of the inner flange 40 is disposed between the first and second virtual lines 49 and 50 in the rear view of the vehicle body 2 (FIG. 1).

  For this reason, since the part 40a of the inner flange 40 can carry each external force directed to the action directions in a balanced manner, the rigidity of the door 9 can be improved more reliably.

  And the improvement of the rigidity of the door 9 described above is because the cross section of each longitudinal portion of the “outer edge portion” of the inner panel 11 is bonded to the outer panel 13 as a hat shape, and the length of the portion 40a of the inner flange 40 is increased. This is achieved by specifying the inclined structure of the direction, and it is not necessary to provide a separate reinforcing material. Therefore, the rigidity of the door 9 can be improved with a simple structure. Further, since the configuration is simple as described above, the door 9 can be easily formed and an increase in the mass can be suppressed.

  In addition, according to the above configuration, the through-hole 21 is formed in the middle portion of the outer panel 13 in the vertical direction, and the unlocking operation handle 23 is provided through the through-hole 21 and interlocked with the lock tool 20. It has been. Further, a through hole 31 is formed in the upper portion of the outer panel 13, and a wiper device 28 that wipes the outer surface of the window glass 16 through the through hole 31 is provided.

  For this reason, there is a possibility that an illegal acter outside the vehicle body 2 may release the lock by illegally operating the lock device 20 in the locked state through the through holes 21 and 31.

  However, until reaching the locking device 20 from the through-holes 21 and 31, the cross-section has a hat shape, and the outer flanges 40 and 41 are bonded to the outer panel 13 with high rigidity. There is an “outer edge” of the inner panel 11. For this reason, the illegal action is more reliably prevented by the “outer edge” of the inner panel 11.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Car compartment 4 Rear wall 5 Back door device 6 Car body centerline 8 Door opening 9 Door 9a Lower part 11 Inner panel 12 Adhesive 13 Outer panel 19 Pivoting tool 20 Locking tool 21 Through-hole 23 Operation handle 24 Interlocking body 26 Stopper portion 28 Wiper device 30 Motor 31 Through hole 32 Wiper 39 Outer edge main body 40 Inner flange 40a Part 40b Other part 41 Outer flange 42 Inner space 49 First virtual line 50 Second virtual line A Upward rotation B Downward rotation θ1 First 1 elevation angle θ2 2nd elevation angle θ3 3rd elevation angle

Claims (1)

A back door that closes the door opening formed on the rear wall of the vehicle body so that it can be opened and closed from the rear is provided, and the lower part of the door has a resin inner and outer panel that are bonded to each other. A pair of left and right pivots pivotally supported on the wall, a lock that releasably locks the central portion of the lower end of the door in the left-right direction to the rear wall, and left and right of the middle part in the vertical direction of the door In a vehicle back door device provided with a pair of left and right stopper portions that are provided on side portions and press against the rear wall to prevent further forward movement of the door,
Each section in the longitudinal direction of the outer edge portion of the inner panel as a hat shape opening toward the outer panel side, and the outer flange is bonded to the outer panel, respectively,
In each of the left and right halves of the door in the rear view of the vehicle, a part of the inner flange in the longitudinal direction of the outer edge portion of the inner panel is arranged, and a first elevation angle in the longitudinal direction of the part A backdoor device for a vehicle, characterized in that the vehicle is inclined so as to be smaller than a second elevation angle of the first imaginary line to be connected and larger than a third elevation angle of the second imaginary line to connect the stopper portion and the locking device. .

Images