JP7613332B2 - Vehicle side door structure - Google Patents

Description

The present invention relates to a vehicle side door structure.

A vehicle side door structure is known in which a collision sensor is attached to the door inner panel that constitutes the vehicle side door, and when the collision sensor detects a side collision, a side door airbag device is inflated and deployed to protect the occupants (see Patent Document 1).

JP 2014-162392 A

However, in the above-mentioned conventional vehicle side door structure, if the door inner panel resonates due to the impact generated when the side door is closed forcefully, the collision sensor may erroneously detect a side collision, which may result in malfunction of the side door airbag device.
The present invention has been made in consideration of the above circumstances, and its object is to provide a vehicle side door structure that is capable of suppressing erroneous detection by a collision sensor caused by an impact when the door is closed, and is advantageous in preventing malfunction of a side airbag device.

In order to achieve the above-mentioned object, one embodiment of the present invention is a vehicle side door structure in which a collision sensor is attached via a sensor bracket to an inner surface located on the inside in the vehicle width direction of a door inner panel, wherein a first convex portion is provided that protrudes from the door inner panel toward the inside in the vehicle width direction and has a ridge line formed around it, the first convex portion has a first portion to which a suction pad can be adsorbed and a second portion extending in an elongated manner from the first portion, the sensor bracket has a hat-shaped cross section due to a sensor mounting portion, and a first fixing portion and a second fixing portion fixed to the door inner panel, and one of the first fixing point of the first fixing portion relative to the door inner panel and the second fixing point of the second fixing portion relative to the door inner panel is located in the vicinity of the ridge line of the second portion.
Moreover, one embodiment of the present invention is characterized in that the first portion has a substantially circular shape.
Moreover, one embodiment of the present invention is characterized in that the other of the first fixing point and the second fixing point is provided on an inner part of a ridge line of the first portion.
Moreover, one embodiment of the present invention is characterized in that a straight line connecting the first fixing point and the second fixing point substantially coincides with an extending direction of the second portion.
In addition, one embodiment of the present invention is characterized in that a second convex portion protruding inward in the vehicle width direction and having a ridge line formed around it is provided at a location of the door inner panel spaced upward from the first convex portion, and one of the first fixing point and the second fixing point is provided at a location of the door inner panel sandwiched between the first convex portion and the second convex portion.
In addition, one embodiment of the present invention is characterized in that the door inner panel has a service hole, and one of the first fixing point and the second fixing point is provided in a portion of the door inner panel located on the opposite side of the service hole, across the second part in the fore-and-aft direction of the vehicle.

According to one embodiment of the present invention, the rigidity of the portion of the door inner panel to which one of the first fixing point of the first fixing portion of the sensor bracket and the second fixing point of the second fixing portion is fixed is increased by the ridge of the second portion, which is advantageous in suppressing resonance of the portion of the door inner panel caused by the impact when the door is closed, suppressing erroneous detection by the collision sensor, and preventing malfunction of the side airbag device.
Furthermore, according to one embodiment of the present invention, the ridge of the first portion is approximately circular, which is advantageous in increasing the rigidity in the vicinity of the portion of the door inner panel to which one of the first and second fixing portions of the sensor bracket is attached, and is more advantageous in suppressing resonance in the portion of the door inner panel caused by the impact when the door is closed, thereby suppressing erroneous detection by the collision sensor and preventing malfunction of the side airbag device.
In addition, according to one embodiment of the present invention, the rigidity of the portion of the door inner panel where the other of the first fixing point of the first fixing portion and the second fixing point of the second fixing portion is provided is increased by the ridge of the first portion, which is more advantageous in suppressing resonance of the portion of the door inner panel caused by the impact when the door is closed, and is more advantageous in preventing erroneous detection by the collision sensor and malfunction of the side airbag device.
In addition, according to one embodiment of the present invention, it is advantageous for improving the rigidity of the portion of the door inner panel along the linear direction connecting at least a pair of fixing points (first fixing point, second fixing point), i.e., the extension direction of the sensor bracket, which is more advantageous for suppressing resonance of the portion of the door inner panel caused by vibration when the door is closed, and is more advantageous for suppressing erroneous detection of the collision sensor and preventing malfunction of the side airbag device.
In addition, according to one embodiment of the present invention, one of the first fixing point of the first fixing portion and the second fixing point of the second fixing portion is provided at a portion of the door inner panel whose rigidity is increased by being sandwiched between the ridge line of the first convex portion and the ridge line of the second convex portion, which is more advantageous in suppressing resonance of the door inner panel portion, suppressing erroneous detection by the collision sensor, and preventing malfunction of the side airbag device.
Furthermore, according to one embodiment of the present invention, the ridge of the second portion can increase the rigidity of the portion of the door inner panel that is close to the service hole, which is more advantageous in suppressing resonance of the portion of the door inner panel caused by vibration when the door is closed, suppressing false detections by the collision sensor, and preventing malfunction of the side airbag device.

1 is a front view of a side door to which a vehicle side door structure according to a first embodiment is applied, as viewed from the inside in a vehicle width direction. 4 is a front view of the mounting portion of the collision sensor as viewed from the inside in the vehicle width direction. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. 3 is a cross-sectional view taken along line BB in FIG. 2. 4 is a perspective view of a mounting portion of the collision sensor as viewed from the inside in the vehicle width direction. FIG. 13 is a perspective view of a portion where a collision sensor is attached in a vehicle side door structure according to a second embodiment, as viewed from the inside in the vehicle width direction. FIG. 13 is a perspective view of a portion where a collision sensor is attached in a vehicle side door structure according to a third embodiment, as viewed from the inside in the vehicle width direction. FIG.

(First embodiment)
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In the drawings, the symbol FR indicates the front in the longitudinal direction of the vehicle, the symbol IN indicates the inside in the width direction of the vehicle, the symbol OUT indicates the outside in the width direction of the vehicle, and the symbol UP indicates the upper side of the vehicle.
1 and 2, in this embodiment, a vehicle side door 10 is a front side door that opens and closes the entrance on the driver's seat side or the passenger seat side. Of course, the present invention can also be applied to a rear side door disposed behind the front side door.

As shown in Figures 1 and 2, the side door 10 is composed of a door body 12, a window opening 14 provided in the upper part of the door body 12, a window glass (not shown) that opens and closes the window opening 14, a door impact bar 16, a collision sensor 18, and a sensor bracket 20.
The front end of the door body 12 is rotatably connected to a front pillar (not shown) via a hinge (not shown), so that the side door 10 swings in the vehicle width direction with the front end as a fulcrum to open and close the entrance/exit.
As shown in FIG. 3, the door body 12 is configured by overlapping a door inner panel 22 that constitutes the surface on the inside in the vehicle width direction and a door outer panel 24 that constitutes the surface on the outside in the vehicle width direction.
As shown in FIG. 1, a service hole 26 is formed in the door inner panel 22 in the middle in the front-rear direction below the window opening 14 for use in, for example, mounting a window glass lifting device.

As shown in FIGS. 1 and 3, the door impact bar 16 is provided between a door inner panel 22 and a door outer panel 24, and is a member that absorbs the impact of a collision load during a side collision to protect an occupant.
The door impact bar 16 is made of metal, has a cylindrical shape, and is disposed below the window opening 14 along the front-rear direction of the vehicle.
The front and rear ends of the door impact bar 16 are attached to the outer surface of the door inner panel 22 located outside in the vehicle width direction via a front impact bar bracket 28A and a rear impact bar bracket 28B, respectively.
In this embodiment, the front impact bar bracket 28A and the rear impact bar bracket 28B are joined to the outer surface of the door inner panel 22 by spot welding.

The collision sensor 18 detects the occurrence of a side collision based on the acceleration at the time when the collision sensor 18 moves due to a collision load input to the door body 12 during a side collision.
When the collision sensor 18 detects the occurrence of a side collision, a side airbag device (not shown) is inflated and deployed to protect the occupant.
The collision sensor 18 is attached via a sensor bracket 20 to an inner surface of a door inner panel 22 located on the inner side in the vehicle width direction.

As shown in FIGS. 2, 4 and 5 , the sensor bracket 20 includes a sensor attachment portion 2002 , a first fixing portion 2004 and a second fixing portion 2006 .
The sensor mounting portion 2002 is a location where the collision sensor 18 is mounted via a fastener such as a bolt.
The sensor mounting portion 2002 is in the shape of a rectangular plate that is slightly larger than the collision sensor 18, and bent pieces are formed from two opposing sides of the sensor mounting portion 2002 by bending them in the same direction, and the first fixing portion 2004 and the second fixing portion 2006 are formed by protruding in directions away from each other from the tips of the bent pieces.
In other words, the sensor bracket 20 has a hat-shaped cross section formed by the sensor mounting portion 2002, the first fixing portion 2004, and the second fixing portion 2006.
The first fixing portion 2004 and the second fixing portion 2006 are each fixed to the inner surface of the door inner panel 22 by spot welding or the like. In the drawing, the symbol * indicates a joining point.
Hereinafter, the fixed point of the first fixing part 2004 to the door inner panel 22 is referred to as a first fixed point 2004A, and the fixed point of the second fixing part 2006 to the door inner panel 22 is referred to as a second fixed point 2006A.

As shown in FIG. 2, the door inner panel 22 includes a door inner panel main body 30 that forms the inner surface of the side door 10 in the vehicle width direction, and a first convex portion 32 that protrudes from the door inner panel main body 30 in the vehicle width direction and has ridge lines 3210, 3212 formed around its periphery.
In this embodiment, the first protrusion 32 is provided in a portion of the door inner panel main body 30 located rearward of the service hole 26 .
The first protrusion 32 has a first portion 32A to which a suction pad (not shown) can be attached, and a second portion 32B extending in an elongated shape from the first portion 32A.
The suction pad suction-holds the first portion 32A when, for example, welding the door inner panel 22, thereby transporting the inner panel.
As shown in Figures 4 and 5, in detail, the first convex portion 32 is composed of a peripheral surface 3202 that stands up from the door inner panel main body 30 and a flat top surface 3204 that connects the upper end of the peripheral surface 3202.
Top surface 3204 is configured to include a first top surface 3204A that is substantially circular and flat and has an outer diameter larger than the suction pad, and a second top surface 3204B that extends continuously upward from an upper portion of first top surface 3204A.
The first portion 32A is configured to include a first top surface 3204A and a peripheral surface 3202 surrounding the first top surface 3204A, and the second portion 32B is configured to include a second top surface 3204B and a peripheral surface 3202 surrounding the second top surface 3204B.
The ridges 3210, 3212 are formed at the boundary between the door inner panel main body 30 and the peripheral surface 3202 and at the boundary between the peripheral surface 3202 and the top surface 3204, respectively, and therefore the ridges 3210, 3212 are located around the first portion 32A and the second portion 32B.

As shown in Figs. 4 and 5, the door inner panel 22 is provided with a second protrusion 34 that protrudes inward in the vehicle width direction of the door inner panel body 30 and has ridges 3410, 3412 formed around its periphery.
The second protrusion 34 is provided at a location of the door inner panel main body 30 spaced upward from the first protrusion 32 .
The second protrusion 34 has a peripheral surface 3402 that stands up from the door inner panel main body 30 and a flat third top surface 3404 that connects the upper end of the peripheral surface 3402.
In this embodiment, the third top surface 3404 has a generally circular shape that is smaller than the first top surface 3204A.
The ridge lines 3410, 3412 are formed at the boundary between the door inner panel main body 30 and the peripheral surface 3402, and at the boundary between the peripheral surface 3402 and the third top surface 3404, respectively.

Next, the attachment of the sensor bracket 20 to the door inner panel 22 will be described.
As shown in FIGS. 2, 4 and 5, the first fixing portion 2004 is joined to a portion of the door inner panel main body 30 that is sandwiched between the first protrusion 32 and the second protrusion 34.
In detail, the first fixing point 2004A is provided at a portion of the door inner panel main body 30 located near the ridges 3210, 3212 of the second portion 32B.
The first fixing point 2004A is provided at a location on the door inner panel main body 30 located on the opposite side of the service hole 26 across the second portion 32B in the vehicle longitudinal direction.
As shown in Figures 2 and 3, the location where the rear impact bar bracket 28B is joined to the outer surface of the door inner panel body 30 is adjacent to the first fixing point 2004A.
As shown in FIGS. 2 and 5, the second fixing point 2006A is joined to the first top surface 3204A, in other words, the second fixing point 2006A is located on the inner portion of the ridges 3210, 3212 of the first portion 32A.
As shown in Figure 2, when viewed in a plane, the sensor mounting portion 2002 and the second part 32B partially overlap, and the straight line connecting the first fixing point 2004A and the second fixing point 2006A approximately coincides with the extension direction of the second part 32B.

According to this embodiment, the first fixing point 2004A of the sensor bracket 20 is provided at a location on the door inner panel main body 30 located near the ridges 3210, 3212 of the second portion 32B, so that the rigidity of the portion of the door inner panel main body 30 where the first fixing point 2004A is provided is increased by the ridges 3210, 3212 of the second portion 32B.
This is advantageous in suppressing resonance of the portion of the door inner panel 22 where the first fixed point 2004A is located, which occurs due to the impact when the door is closed, and is advantageous in suppressing false detection by the collision sensor 18 and preventing malfunction of the side airbag device.
In addition, since the second portion 32B is formed utilizing the first portion 32A provided for the suction pad to be adsorbed, the cost of processing the door inner panel 22 is kept to a minimum, which is also advantageous in terms of reducing costs.

In addition, the rigidity of the portion of the door inner panel 22 close to the service hole 26 is likely to decrease, but according to this embodiment, the first fixing point 2004A of the sensor bracket 20 is provided at a location on the door inner panel main body 30 located on the opposite side of the service hole 26 across the second portion 32B in the fore-and-aft direction of the vehicle.
Therefore, the ridges 3210, 3212 of the second portion 32B can increase the rigidity of the portion of the door inner panel 22 close to the service hole 26, which is more advantageous in suppressing resonance of the portion of the door inner panel 22 where the first fixed point 2004A is provided, which is caused by vibration when the door is closed, and is more advantageous in suppressing erroneous detection by the collision sensor 18 and preventing malfunction of the side airbag device.

Furthermore, according to this embodiment, since the first portion 32A of the first protrusion 32 has a substantially circular shape, the ridgelines 3210, 3212 of the first portion 32A also have a substantially circular shape.
This is advantageous in increasing the rigidity in the vicinity of the portion of the door inner panel 22 where the first fixing point 2004A of the sensor bracket 20 is attached, and is more advantageous in suppressing resonance in the portion of the door inner panel 22 where the first fixing point 2004A is provided, which is caused by vibration when the door is closed, and is more advantageous in suppressing erroneous detection by the collision sensor 18 and preventing malfunction of the side airbag device.

Furthermore, according to this embodiment, the second fixing portion 2006 of the sensor bracket 20 is provided on the first top surface 3204A, in other words, on the inner side of the ridge lines 3210, 3212 of the first portion 32A of the first convex portion 32.
Therefore, the rigidity of the portion of the door inner panel 22 where the second fixing portion 2006 is provided is increased by the ridges 3210, 3212 of the first portion 32A, which is more advantageous in suppressing resonance of the portion of the door inner panel 22 where the second fixing portion 2006 is provided, which is caused by vibration when the door is closed, and is more advantageous in suppressing erroneous detection by the collision sensor 18 and preventing malfunction of the side airbag device.

Furthermore, according to this embodiment, the straight line connecting first fixing point 2004A and second fixing point 2006A of sensor bracket 20 substantially coincides with the extending direction of second portion 32B of first convex portion 32.
Therefore, it is advantageous in improving the rigidity of the portion of the door inner panel 22 along the extension direction of the sensor bracket 20, and is more advantageous in suppressing resonance of the portion of the door inner panel 22 where the first fixing point 2004A and the second fixing point 2006A are provided, which occurs due to vibration when the door is closed, and is more advantageous in suppressing erroneous detection of the collision sensor 18 and preventing malfunction of the side airbag device.

In addition, according to this embodiment, a second convex portion 34 is provided at a location on the door inner panel 22 spaced upward from the first convex portion 32, and the second convex portion 34 protrudes inward in the vehicle width direction and has ridge lines 3410, 3412 formed around it, and the first fixing point 2004A of the sensor bracket 20 is provided at a location on the door inner panel 22 sandwiched between the first convex portion 32 and the second convex portion 34.
Therefore, the first fixing point 2004A is provided at a location on the door inner panel 22 where the rigidity is increased by being sandwiched between the ridges 3210, 3212 of the first convex portion 32 and the ridges 3410, 3412 of the second convex portion 34, which is more advantageous in suppressing resonance of the portion of the door inner panel 22 where the first fixing portion 2004 is provided, and is more advantageous in suppressing erroneous detection by the collision sensor 18 and preventing malfunction of the side airbag device.

In addition, in this embodiment, the location where the rear impact bar bracket 28B is provided on the outer surface of the door inner panel 22 is close to the location on the inner surface of the door inner panel 22 where the first fixing point 2004A is provided.
Therefore, since the first fixing point 2004A is provided at a location on the door inner panel 22 where the rigidity has been increased by providing the rear impact bar bracket 28B, it is more advantageous in suppressing resonance in the portion of the door inner panel 22 where the first fixing point 2004A is provided, and is more advantageous in suppressing erroneous detection by the collision sensor 18 and preventing malfunction of the side airbag device.

Second Embodiment
Next, a second embodiment will be described with reference to FIG.
The second embodiment is a modified example of the first embodiment, and differs from the first embodiment in that the first fixing portion 2004 of the sensor bracket 20 is provided on the second top surface 3204B, i.e., the location where the first fixing point 2004A is provided on the door inner panel 22 is located inside the ridge lines 3210, 3212 of the second part 32B of the first convex portion 32.
In this second embodiment, as in the first embodiment, the first fixing point 2004A of the sensor bracket 20 is provided at a location on the door inner panel 22 located near the ridges 3210, 3212 of the second portion 32B.
Therefore, as in the first embodiment, the rigidity of the portion of the door inner panel 22 where the first fixing point 2004A is provided is increased by the ridges 3210, 3212 of the second portion 32B, which is advantageous in suppressing resonance of the portion of the door inner panel 22 where the first fixing point 2004A is provided, which is caused by the impact when the door is closed, and is advantageous in suppressing erroneous detection of the collision sensor 18 and preventing malfunction of the side airbag device.

Third Embodiment
Next, a third embodiment will be described with reference to FIG.
The third embodiment is a modified example of the first embodiment, and differs from the first embodiment in that the first fixing point 2004A and the second fixing point 2006A of the sensor bracket 20 are provided at locations on the door inner panel main body 30 that sandwich the second part 32B in a direction intersecting the longitudinal direction of the second part 32B.
According to the third embodiment, both the first fixing point 2004A and the second fixing point 2006A of the sensor bracket 20 are provided at locations of the door inner panel 22 located near the ridges 3210, 3212 of the second portion 32B.
Therefore, the rigidity of the portion of the door inner panel 22 where the first fixing point 2004A and the second fixing point 2006A are provided is increased by the ridges 3210, 3212 of the second part 32B, which is advantageous in suppressing resonance of the portion of the door inner panel 22 where the first fixing point 2004A and the second fixing point 2006A are provided, which is caused by the impact when the door is closed, and is advantageous in suppressing false detection of the collision sensor 18 and preventing malfunction of the side airbag device.

In the above embodiment, the second portion 32B of the first protrusion 32 extends upward from the first portion 32A, but the extension direction of the second portion 32B is not limited.

10 Side door 12 Door body 14 Window opening 16 Door impact bar 18 Collision sensor 20 Sensor bracket 2002 Sensor mounting portion 2004 First fixing portion 2004A First fixing point 2006 Second fixing portion 2006A Second fixing point 22 Door inner panel 24 Door outer panel 26 Service hole 28A Front impact bar bracket 28B Rear impact bar bracket 30 Door inner panel body 32 First protrusion 32A First portion 32B Second portion 3202 Peripheral surface 3204 Top surface 3204A First top surface 3204B Second top surface 3210 Ridge line 3212 Ridge line 34 Second protrusion 3402 Peripheral surface 3404 Third top surface 3410 Ridge line 3412 Ridge line

Claims (6)

A vehicle side door structure in which a collision sensor is attached via a sensor bracket to an inner surface of a door inner panel located on an inner side in a vehicle width direction,
a first protrusion protruding from the door inner panel toward the inside in the vehicle width direction and having a ridge line formed around the periphery thereof;
the first protrusion has a first portion to which the suction pad can be attached and a second portion extending in an elongated shape from the first portion,
the sensor bracket has a hat-shaped cross section formed by a sensor mounting portion, and a first fixing portion and a second fixing portion fixed to the door inner panel,
One of a first fixing point of the first fixing portion to the door inner panel and a second fixing point of the second fixing portion to the door inner panel is located near a ridge line of the second portion.
A vehicle side door structure comprising: The first portion has a generally circular shape.
2. The vehicle side door structure according to claim 1. The other of the first fixing point and the second fixing point is provided on an inner portion of a ridge line of the first portion.
3. The vehicle side door structure according to claim 1 or 2. A straight line connecting the first fixing point and the second fixing point substantially coincides with an extension direction of the second portion.
4. The vehicle side door structure according to claim 1, A second protrusion is provided at a portion of the door inner panel spaced upward from the first protrusion, the second protrusion being protruded inward in the vehicle width direction and having a ridge line formed around the periphery thereof,
One of the first fixing point and the second fixing point is provided at a portion of the door inner panel sandwiched between the first protrusion and the second protrusion.
5. The vehicle side door structure according to claim 1. The door inner panel has a service hole,
One of the first fixing point and the second fixing point is provided at a portion of the door inner panel located on the opposite side of the service hole across the second portion in the vehicle front-rear direction.
6. The vehicle side door structure according to claim 1,

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