JP2001301460A - Assembling structure of sun-visor for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembling structure of a sun visor for a vehicle capa ble of preventing breakage at a horizontal shaft part of a supporting shaft caused by an expansion force of a curtain air bag. SOLUTION: In the vehicle equipped with the curtain air bag device, the sun-visor main body 40 is arranged in the front side on a ceiling surface so as to switch a front shade position along with a windshield or a side shade position along with a side glass by means of a supporting shaft 30. In a state where the sun-visor main body 40 is arranged in the side shade position, when the curtain air bag 11 is expanded toward inside a cabin, a mounting height position of the supporting shaft 30 to the front side on the ceiling surface of the cabin is set so that the curtain air bag 11 is abutted on the side face of the sun-visor main body 40 and the sun-visor main body 40 is rotated around the horizontal shaft part 35 of the supporting shaft 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curtain airbag provided on a roof side portion with an impact load not less than a predetermined value, so that a curtain airbag is set in such a manner that a roof lining is pushed open to inflate into a vehicle interior. In a vehicle equipped with a bag device, a sun visor for a vehicle is mounted so that the arrangement of the sun visor body can be switched between a front light shielding position along a windshield and a side light shielding position along a side glass by a support shaft with respect to a front side of a ceiling surface of a passenger compartment. Related to the mounting structure.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 4 and 5, in a sun visor for a vehicle, a sun visor main body 14 is mounted on a horizontal shaft portion 135 of a support shaft 130 mounted on a front side of a ceiling surface of a passenger compartment.
0 is rotatably mounted. And the sun visor body 1
40 is switched between a storage position along the ceiling surface of the vehicle compartment and a front light-shielding position along the windshield by being rotated around the axis of the horizontal shaft 135. Further, the sun visor body 14 disposed at the front light shielding position
0 is switched to a side light shielding position along the side glass by being rotated around the axis of the vertical axis 135. In addition, as shown in FIG. 4, when the sun visor body 140 is arranged at the side light blocking position, the sun visor body 1 is arranged so that light does not enter the vehicle interior from the upper edge of the sun visor body 140.
The height position of the upper edge portion of the sun visor body 40 is set to be substantially the same as the side height position of the side terminal portion 104 of the roof lining 103, and the upper edge portion of the sun visor body 140 and the side terminal portion 104 of the roof lining 103 In general, no gap was formed between them.

[0003]

In the state where the sun visor body 140 is arranged at the side light blocking position, as shown in FIG. 5, the curtain airbag 111 provided on the roof side portion with an impact load of a predetermined value or more, as shown in FIG. However, in the process of pushing open the side terminal portion 104 of the roof lining 103 and inflating it toward the passenger compartment, a part of the curtain airbag 111 rides over the upper edge of the sun visor body 140 and the upper edge of the sun visor body 140. May expand so as to surround it. Then, the inflation force of the curtain airbag 111 acts in a direction to push down the sun visor main body 140, and there is a case in which the horizontal shaft 135 of the support shaft 130 is broken.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an assembling structure of a vehicle sun visor which can prevent a break of a horizontal shaft portion of a support shaft caused by an inflation force of a curtain air bag. It is.

[0005]

Means for Solving the Problems To achieve the above object, the first invention has a gist as set forth in claim 1. Therefore, in a state where the sun visor body is disposed at the side light blocking position, when the curtain airbag is inflated by pushing the roof lining inward by a shock load equal to or more than a predetermined value and inflating into the vehicle interior, the inflated curtain airbag is moved by the sun visor. The sun visor body, which inflates toward the interior of the vehicle while hitting the side surface of the main body, receives the inflation force of the curtain airbag on the side surface, and rotates around the horizontal axis of the support shaft toward the vehicle interior. For this reason,
Unlike before, the inflation force of the curtain airbag is prevented from acting in the direction of pushing down the sun visor body,
The problem that the horizontal shaft portion of the support shaft is broken can be eliminated.

Further, a second aspect of the invention has a configuration as described in claim 2. Therefore, the upper edge portion of the sun visor body is set at a position higher than the height position of the side terminal portion of the roof lining by a predetermined height, and the upper edge portion of the sun visor body has an overlapping margin (wrap margin) and has a side margin of the roof lining. Face the terminal. For this reason, the inflation force of the curtain airbag can be reliably received on the side surface of the sun visor body, and the inflation force of the curtain airbag can be reliably prevented from acting in the direction of pushing down the sun visor body.

[0007] The third invention has a gist as set forth in claim 3. Therefore, since the height position of the central axis of the horizontal shaft portion of the support shaft is set at a position higher than the height position of the side terminal portion of the roof lining, the sun visor body that has received the inflation force of the curtain airbag is , Satisfactorily pivoting around the horizontal axis of the support shaft and toward the cabin.
As a result, the inflation force of the curtain airbag acts in the direction of pushing down the sun visor main body, whereby the problem that the horizontal shaft portion of the support shaft is broken can be more reliably prevented.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIG. 1 showing a roof side portion of a front portion in a vehicle interior and FIG. 2 showing a cross section taken along line II-II of FIG. 1, a roof panel 1 constituting a part of a vehicle body and a lower surface of the roof panel 1 A curtain airbag 11 of the curtain airbag device is installed in a folded state in a side space between the roof lining 3 and the curtain lining 3 provided to be hung.
The curtain airbag 11 is set so that the side end portion 4 of the roof lining 3 is pushed open by an impact load equal to or greater than a predetermined value to inflate toward the vehicle interior. That is, when an impact load equal to or more than a predetermined value (for example, an impact load at the time of a side collision of the vehicle) acts on the vehicle, the impact load is detected by an airbag sensor, and a gas generator (also referred to as an inflator) is generated based on the detection signal. Is activated). When the gas generated in the gas generator is filled in the curtain airbag 11, the curtain airbag 11 pushes open the side terminal portion 4 of the roof lining 3 and inflates toward the vehicle interior to protect the occupant. It is supposed to.

In the vehicle provided with the curtain airbag device as described above, as shown in FIG. 3, one side of the front header panel 2 fixed to the front side of the ceiling surface of the cabin, mainly to the lower front side of the roof panel 1. A vehicle sun visor is mounted on the lower surface. The sun visor for a vehicle mainly includes a sun visor main body 40 and a spindle 30. The support shaft 30 is formed in a substantially L-shape with a vertical axis portion 31 and a horizontal axis portion 35, and the roof lining 3 is interposed between the lower surface near one side of the front header panel 2 by the bracket 21 on the vertical axis portion 31. It is assembled across.

The bracket 21 includes a mounting flange 21a.
And a boss 22 protruding from the center of the upper surface of the mounting flange 21a. The mounting flange 21a is fixed to the lower surface of the front header panel 2 near one side by a mounting means such as a screw. . At the center of the boss portion 22 of the bracket 21, a tapered shaft hole into which a tapered shaft portion 32 formed above the vertical axis portion 31 is rotatably fitted is formed. Further, a plurality of slit-shaped split grooves are radially formed in the upper half portion of the boss portion 22, whereby the upper half portion of the boss portion 22 is formed to be elastically expandable. On the inner peripheral surface of the upper end portion of the boss portion 22, a locking claw 25 which elastically engages with a locking groove 33 formed in a substantially annular concave shape on the upper outer periphery of the longitudinal axis portion 31 to prevent slipping is provided. ing. Then, by pushing the vertical axis portion 31 from the lower end opening of the tapered shaft hole of the boss portion 22, the locking claw 25 of the boss portion 22 is elastically engaged with the locking groove 33 of the vertical axis portion 31. Thus, the support shaft 30 is mounted on the bracket 21 so as to be rotatable about the longitudinal axis portion 31.

The sun visor body 40 is formed in a hollow shell shape by injection molding, blow molding, or the like of a synthetic resin, or is formed in a required shape by a foam of a synthetic resin, rubber, or the like. The sun visor main body 40 is covered with an outer skin, and a bearing member 41 is provided inside one corner (upper right end in FIG. 3) of the sun visor main body 40. Further, the sun visor main body 40 is mounted with the horizontal shaft portion 35 of the support shaft 30 inserted into a bearing hole of the bearing member 41. Then, the sun visor main body 40 is rotated and rotated around the axis of the horizontal shaft portion 35, so that the arrangement is switched between the storage position along the ceiling surface of the vehicle compartment and the front light shielding position along the windshield. Further, the sun visor body 40 arranged at the front light shielding position is rotated around the longitudinal axis 31 of the support shaft 30,
The arrangement is switched to a side light shielding position along the side glass of the side door (see FIG. 3).

As shown in FIGS. 1 and 2, when the sun visor body 40 is located at the side light shielding position, an impact load of a predetermined value or more acts on the vehicle, and the curtain airbag 11 is moved to the roof lining 3. When the side airbag 4 is pushed open and inflated toward the passenger compartment, the curtain airbag 11 hits the side surface of the sun visor main body 40 and the sun visor main body 40 is connected to the horizontal shaft 3 of the support shaft 30.
5 so that the support shaft 30 is attached to the front side of the ceiling surface of the passenger compartment, that is, the bracket 21 is rotated.
The height position of the lower surface near one side of the front header panel 2 to which the mounting flange 21a is fixed is set.

In this embodiment, when the sun visor body 40 is located at the side light shielding position, the upper edge of the sun visor body 40 is at a predetermined height H1 higher than the height position of the side terminal portion 4 of the roof lining 3. And the upper edge of the sun visor main body 40 faces the side terminal portion 4 with an overlap margin (lap margin). Further, the overlap margin is set to about 20 mm or 20 mm or more in consideration of an unexpected downward inclination of the tip end side of the sun visor body 40, and the height position of the center axis of the horizontal shaft portion 35 of the support shaft 30 is changed. , Side terminal part 4 of roof lining 3
Is set at a position higher than the height position by a predetermined height H2. Incidentally, the height from the central axis of the horizontal shaft portion 35 to the upper edge of the sun visor body 40 is set to about 15 mm.

The mounting structure of the vehicle sun visor according to this embodiment is configured as described above. Therefore, as shown in FIGS. 1 and 2, when the sun visor body 40 is located at the side light shielding position, an impact load of a predetermined value or more acts on the vehicle, and the curtain airbag 11 is moved to the side end portion of the roof lining 3. When the air bag 4 is pushed open and inflated into the vehicle interior, the inflated curtain airbag 1 is opened.
1 expands toward the interior of the vehicle while hitting substantially the center of the side surface of the sun visor body 40. As described above, the sun visor body 4 receiving the inflation force of the curtain airbag 11 at a substantially central height portion or a lower portion of the side surface.
0 rotates around the horizontal shaft portion 35 of the support shaft 30 and toward the passenger compartment side. For this reason, unlike the related art, the inflation force of the curtain airbag 11 is prevented from acting in the direction of pushing down the sun visor body 40, and the horizontal shaft portion 35 of the support shaft 30 is prevented.
Can be eliminated.

Further, the upper edge of the sun visor body 40 is set at a position higher than the height position of the side terminal portion 4 of the roof lining 3 by a predetermined height H1.
The upper edge portion of 0 faces the side terminal portion 4 with an overlap margin (lap margin). Therefore, the curtain airbag 1
1 is reliably received on the side surface of the sun visor main body 40, and the sun visor main body 40 rotates about the horizontal shaft portion 35 of the support shaft 30 and toward the vehicle interior, whereby the inflation force of the curtain airbag 11 is increased. Can be reliably prevented from acting in the direction of pushing down the sun visor body 40.

In particular, in this embodiment, the support shaft 30
Is set at a position higher by a predetermined height H2 than the height position of the side terminal portion 4 of the roof lining 3. For this reason, the sun visor main body 40 that has received the inflation force of the curtain airbag 11 on the side surface of the sun visor main body 40 is
5 and satisfactorily turns toward the cabin. As a result, the inflation force of the curtain airbag 11 acts in a direction to push down the sun visor main body 40, so that it is possible to more reliably prevent the horizontal shaft 35 of the support shaft 30 from being broken.

[0017]

As described above, according to the present invention,
Since the sun visor body rotates around the horizontal axis of the support shaft and toward the passenger compartment by receiving the inflation force of the curtain air bag on the side, the horizontal axis of the support shaft is caused by the inflation force of the curtain air bag. The breakage of the part can be prevented.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention and showing a state where a sun visor main body is arranged at a side light shielding position.

FIG. 2 is a sectional view based on the line II-II in FIG.

FIG. 3 is an explanatory view showing an assembling relationship of a front header panel, a bracket, a support shaft, and a sun visor body.

FIG. 4 is a side view showing a state in which a conventional sun visor body is arranged at a side light shielding position.

FIG. 5 is a sectional view based on the line VV of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roof panel 3 Roof lining 4 Side terminal part 11 Curtain air bag 20 Vehicle sun visor 21 Bracket 30 Support shaft 31 Vertical axis part 35 Horizontal axis part 40 Sun visor body

Claims (3)

[Claims] 1. A vehicle provided with a curtain airbag device configured such that a curtain airbag provided on a roof side portion is inflated toward a vehicle interior by opening a roof lining with an impact load of a predetermined value or more. In the front side of the ceiling surface of the passenger compartment, a sun visor body is assembled by a support shaft so as to be switchable between a front light shielding position along a windshield and a side light shielding position along a side glass, and the sun visor body is in the side light shielding position. In the disposed state, when the curtain airbag is inflated toward the interior of the vehicle, the curtain airbag hits a side surface of the sun visor body and rotates the sun visor body about a horizontal axis of the support shaft. A set of sun visors for a vehicle, wherein the mounting height position of the support shaft is set with respect to the front side of the ceiling surface of the cabin. Attached structure. 2. The assembling structure of the vehicle sun visor according to claim 1, wherein the sun visor main body is arranged at a side light blocking position, and the upper edge of the sun visor main body is connected to a side terminal portion of a roof lining. Mounting structure of a vehicle sun visor set at a position higher than a predetermined height by a predetermined height. 3. The assembling structure of the sun visor for a vehicle according to claim 1, wherein in a state where the sun visor main body is arranged at the side light shielding position, the height position of the center axis of the horizontal shaft portion of the support shaft is set to: The mounting structure of the vehicle sun visor set at a position higher than the height position of the side terminals of the roof lining.