JP2007137257A - Colliding object protective structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a colliding object protective structure of a vehicle capable of absorbing and moderating impact force added to a colliding object collided against an instrument panel from the front of a front window glass. <P>SOLUTION: An impact absorbing part to absorb the impact force added to the colliding object collided against the instrument panel 10 from the front of the front window glass 2 is provided on the instrument panel 10 on this colliding object protective structure of the vehicle. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a collision object protection structure for a vehicle that absorbs an impact force applied to a collision object that collides with an instrument panel from the front of a front window glass to protect the collision object.

  A collision object protection device that inflates and deploys an air bag on the upper surface of a vehicle to absorb and mitigate the impact force applied to the collision object when a collision with the vehicle is detected or predicted is the lower edge of the front windshield of the vehicle. And a pair of pillar portions that are bent from both ends of the main body portion and are inflated and deployed along the vicinity of the lower portion of the front pillar of the vehicle. There is a collision object protection device including an airbag (see, for example, Patent Document 1).

Further, the airbag of the conventional collision object protection apparatus described above is provided with a transparent tear-proof film that extends so as to cover the front face of the front window glass, and the front face of the front window glass is covered with this tear-proof film. Thus, the impact force applied to the colliding object colliding with the front window glass can be absorbed and relaxed, and the collision object can be prevented from penetrating the front window glass.
JP 2000-264146 A (paragraphs 0015, 0019, 0020, FIG. 4)

  By the way, in the above-described conventional collision object protection device, the laceration prevention film is a part of the airbag. It becomes difficult to secure a forward view.

Therefore, as a front window glass that absorbs and relaxes the impact force applied to the colliding object and can secure a front view after the collision of the colliding object, it is a transparent and tough interlayer film between two transparent substrates. Laminated glass sandwiched between can be used.
In this configuration, the impact force applied to the collision object can be absorbed and relaxed by the deflection of the intermediate film, and the intermediate film is sandwiched between the transparent substrates, and the intermediate film does not shrink after the collision of the collision object. A front view can be secured after the collision of the collision object.

  However, in the case of the front window glass having the intermediate film, when the shock absorption performance is improved by increasing the amount of bending of the intermediate film, the collision object colliding from the front of the front window glass is caused by the deformation of the intermediate film. There is a problem that the collision object will collide with the instrument panel in the vehicle because it will greatly enter the inside.

  Therefore, the present invention provides a vehicle collision object protection structure that can solve the above-described problems and can absorb and mitigate the impact force applied to the collision object that has collided with the instrument panel from the front of the front window glass. Let it be an issue.

  In order to solve the above-described problem, the present invention provides a collision object protection structure for a vehicle, and an impact absorbing portion for absorbing an impact force applied to an impact object colliding with an instrument panel from the front of the front window glass, It is provided in the instrument panel.

  In this way, the impact absorbing part for absorbing the impact force applied to the colliding object colliding with the instrument panel from the front of the front window glass is provided on the instrument panel, so that the collision object is bent by the front window glass. Even when the vehicle enters the inside of the vehicle by a large amount and collides with the instrument panel in the vehicle, the impact force applied to the collision object from the instrument panel can be absorbed and relaxed.

  In the vehicle collision object protection structure described above, the front window glass is a laminated glass in which a transparent intermediate film is sandwiched between two transparent substrates, and the intermediate film has a collision object on the front window glass. It can be configured to have toughness so as to absorb the impact without causing the collision object to penetrate when it collides.

Here, when the intermediate film having toughness is provided on the front window glass, when the collision object collides with the front window glass, the impact force applied to the collision object can be absorbed and relaxed by the bending of the intermediate film.
In the present invention, the impact force can be absorbed and relaxed by the shock absorbing portion even when a collision object that has largely entered the vehicle interior collides with the instrument panel due to the bending of the intermediate film. Considering the collision between the collision object and the instrument panel, the amount of bending of the intermediate film can be increased without limiting the amount of bending of the intermediate film, and the impact absorbing performance of the intermediate film can be improved.

  In the vehicle impact object protection structure described above, the shock absorbing portion forms a weak portion on the rib provided on the inner side surface of the instrument panel or loosens the bent portion of the rib provided on the inner side surface of the instrument panel. For example, it can be configured by forming it with a proper curvature.

  Here, the weak part is a part that is easily deformed or broken by a weaker force than other parts by forming slits or notches.

  Thus, by forming a weak part in the rib or forming a bent part of the rib with a gentle curvature, the rib is easily deformed or broken by a pressing force. As a result, when the collision object collides with the instrument panel, the ribs are deformed or broken by the pressing force from the collision object, and the instrument panel is bent, so that the impact force applied to the collision object is absorbed and relaxed. be able to.

  In the above-described vehicle impact object protection structure, the shock absorbing portion is provided with a tubular fitting portion on the instrument panel to which a support shaft protruding from the vehicle body frame is fitted, and a weak portion is formed in the fitting portion. Or a support shaft that fits into a fitting hole formed in the vehicle body frame is provided on the instrument panel, and a fragile portion is formed on the support shaft.

  In this way, the fragile portion is formed in the cylindrical fitting portion in which the support shaft of the vehicle body frame fits, or the weak portion is formed in the support shaft that fits in the fitting hole of the vehicle body frame. The part or the support shaft is easily deformed or broken by the pressing force. As a result, when the collision object collides with the instrument panel, the fitting part or the support shaft is deformed or broken by the pressing force from the collision object, and the instrument panel and the vehicle body frame are released from being fixed. Therefore, the impact force applied to the collision object can be absorbed and relaxed.

  In the vehicle collision object protection structure described above, the impact absorbing portion can be configured by attaching an elastic member to the upper portion of the instrument panel.

  Thus, by attaching an elastic member to the upper part of the instrument panel, when the collision object collides with the instrument panel, the impact force applied to the collision object can be absorbed and relaxed by the elastic member.

According to the vehicle collision object protection structure of the present invention, the instrument panel is provided with an impact absorbing portion for absorbing the impact force applied to the collision object colliding with the instrument panel from the front of the front window glass. When the collision object collides with the instrument panel in the vehicle, the impact force applied to the collision object from the instrument panel can be absorbed and relaxed, so that the collision object can be reliably protected.
In addition, when applied to a vehicle having a front window glass in which a tough intermediate film is sandwiched between two transparent substrates, the intermediate film is bent so that the collision object that has entered the inside of the vehicle greatly Even if the instrument collides with the instrument panel, the impact force is absorbed and relaxed by the impact absorbing part.Therefore, considering the collision between the impact object and the instrument panel, the amount of bending of the interlayer film is not limited. By increasing the amount of deflection of the interlayer film, the impact absorbing performance of the interlayer film can be improved.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In the description of each embodiment, the same constituent elements are denoted by the same reference numerals, and redundant descriptions are omitted.

[First Embodiment]
First, the collision object protection structure for a vehicle according to the first embodiment will be described.
FIG. 1 is a plan view showing the vehicle of the first embodiment. FIG. 2 is a view of the instrument panel of the first embodiment as viewed from below. 3A and 3B are diagrams showing the collision object protection structure according to the first embodiment. FIG. 3A is a cross-sectional view taken along the line AA of FIG. 1, FIG. 3B is an enlarged cross-sectional view of a front window glass, and FIG. It is an expanded sectional view.

As shown in FIG. 1, the vehicle 1 according to the first embodiment is an automobile, and when the vehicle 1 collides with a colliding object while traveling, and the colliding object collides with the front window glass 2, the colliding object A collision object protection structure 3 is provided for absorbing and mitigating the impact force applied to.
The collision object protection structure 3 of the first embodiment absorbs and reduces the impact force applied to the collision object that has collided with the front window glass 2 from the front of the vehicle 1 and collides with the instrument panel 10 due to the deflection of the front window glass 2. The impact force applied to the colliding object is absorbed and relaxed.

As shown in FIG. 3 (b), the front window glass 2 is a laminated glass in which a transparent intermediate film 2c is sandwiched between two transparent substrates 2a and 2b made of glass arranged in the vertical direction. is there.
The intermediate film 2c is a thin film having toughness so as to absorb the impact force applied to the collision object without penetrating the collision object colliding from the front of the front window glass 2. Although the material of this intermediate film 2c is not limited, PVB (polyvinyl butyral) etc. can be used, for example.

The instrument panel 10 is a resin-made interior panel disposed in the front of the vehicle along the lower edge of the front window glass 2 and, as shown in FIG. It is substantially U-shaped so as to open.
As shown in FIG. 2, the instrument panel 10 has a cylindrical fitting portion 11 that fits on a support shaft (not shown) protruding from the vehicle body frame at a predetermined interval in the vehicle width direction. It is provided in three places.
The center fitting portion 11 is located at the center in the vehicle width direction, and the outer fitting portion is located at a position where the defrosters 12 and 12 serving as air outlets for in-vehicle air conditioning are interposed from the center fitting portion 11. 11 and 11 are arranged.
And each fitting part 11,11,11 is each fitted by three support shafts (not shown) protrudingly provided by the vehicle body frame, and both sides of the instrument panel 10 in the vehicle width direction are the vehicle body. The instrument panel 10 is attached to the vehicle body frame by being bolted to the frame.
In addition, the code | symbol 13 shown to Fig.3 (a) is a pad attached to the outer surface of the instrument panel 10. FIG.

  As shown in FIG. 2, the instrument panel 10 has plate-like ribs 14 that are vertically raised from the inner side surface 10 a and extend in the front-rear direction of the vehicle 1. The ribs 14 are members for preventing the instrument panel 10 from being distorted by heat or weak force, and a plurality of ribs 14 are provided at predetermined intervals in the vehicle width direction.

  Further, the instrument panel 10 is provided with an impact absorbing portion that absorbs an impact force applied to a collision object that has collided with the upper surface 10 c of the instrument panel 10 from the front of the front window glass 2.

As shown in FIG. 3A, the shock absorbing portion of the first embodiment is formed by notching a plurality of notches 14 a... In the rib 14 and forming fragile portions at a plurality of locations on the rib 14. It is configured.
Each notch 14a is formed substantially perpendicular to the inner side surface 10a of the instrument panel 10, and is formed at a predetermined interval in the extending direction of the rib 14.

Further, the impact absorbing portion of the first embodiment is also configured by forming the bent portion of the rib 14 with a gentle curvature.
As shown in FIG. 3C, the rib 14 is formed with bent portions 14b and 14b bent along the stepped portion 10b formed on the inner side surface 10a of the instrument panel 10, and the bent portion 14b. , 14b are formed with a gentle curvature.

The collision object protection structure 3 of the first embodiment configured as described above has the following operational effects.
In the impact absorbing portion of the first embodiment, as shown in FIG. 3C, a plurality of notches 14 a are formed in the rib 14 provided on the inner surface 10 a of the instrument panel 10, and the bent portion 14 b of the rib 14 is formed. By forming it with a gentle curvature, the rib 14 is easily deformed or broken by a pressing force.

When the collision object collides with the front window glass 2 from the front of the vehicle 1, the intermediate film 2c of the front window glass 2 is bent, so that the impact force applied to the collision object is absorbed and relaxed.
At this time, when the intermediate film 2c bends and the collision object greatly enters the inside of the vehicle and collides with the upper surface 10c of the instrument panel 10, the rib 14 is deformed or broken by the pressing force from the collision object, Since the upper surface 10c of the instrument panel 10 is bent, the impact force applied to the collision object from the instrument panel can be absorbed and relaxed, and the collision object can be reliably protected.

  Further, even when the collision object collides with the instrument panel 10 due to the large deflection of the intermediate film 2c, the impact force is absorbed and relaxed by the shock absorbing portion, so that the collision object and the instrument panel 10 Considering the collision, the amount of deflection of the intermediate film 2c can be increased without limiting the amount of deflection of the intermediate film 2c, and the impact absorbing performance of the intermediate film 2c can be improved.

  Note that the intermediate film 2c is sandwiched between the transparent substrates, and the intermediate film 2c does not contract after the collision of the collision object, so that it is possible to secure a front view after the collision, and the avoidance operation after the collision is performed accurately. be able to.

Further, it is necessary to set the width and depth of the notch 14a so that the strength of the rib 14 does not decrease more than necessary.
Furthermore, each notch 14a ... of the ribs 14 and 14 adjacent in the vehicle width direction is formed so as not to line up in the vehicle width direction, and the weak parts are dispersed, thereby biasing the strength of the instrument panel 10. It is desirable not to generate.

[Second Embodiment]
Next, the collision object protection structure for a vehicle according to the second embodiment will be described.
FIG. 4 is a side sectional view showing a collision object protection structure according to the second embodiment. 5A and 5B are diagrams showing an impact absorbing portion of the second embodiment, where FIG. 5A is a side sectional view of the fitting portion, FIG. 5B is a front sectional view of the fitting portion, and FIG. It is front sectional drawing which showed the aspect in which an upper wall part exceeds a support shaft.

  As shown in FIG. 4, the impact absorbing portion in the collision object protection structure of the second embodiment includes a fitting portion 11 on which the support shaft 4 a protruding from the vehicle body frame 4 fits on the inner side surface 10 a of the instrument panel 10. It is configured by providing a slit 11 a in the fitting portion 11.

As shown in FIGS. 5A and 5B, the fitting portion 11 is provided between the side wall portions 11c and 11c on both sides that are vertically lowered from the inner side surface 10a and the side wall portions 11c and 11c on both sides. It is a cylindrical part which forms the hole part 11e extended in the front-back direction of the vehicle 1 by the formed upper wall part 13b and lower wall part 11d.
The hole 11e is formed in an inverted trapezoidal shape when viewed from the front, and is formed in a size that fits with the support shaft 4a of the vehicle body frame 4.
Further, the upper wall portion 11b and the lower wall portion 11d are formed at lower portions in the height direction of the side wall portions 11c and 11c on both sides, and a hollow portion is formed between the inner side surface 10a and the upper surface of the upper wall portion 11b. 11f is formed.

  A fragile portion is formed in the upper wall portion 11b by a slit 11a extending in the front-rear direction of the vehicle 1, and the upper wall portion 11b is easily bent by a pressing force. Therefore, as shown in FIG. 5 (c), when a pressing force is applied to the upper surface 10c of the instrument panel 10, the upper wall portion 11b is curved, so that the upper wall portion 11b moves downward beyond the support shaft 4a. As a result, the support shaft 4a is detached from the hole 11e and is loosely fitted into the hollow portion 11f. Thereby, a part of fixation between the instrument panel 10 and the vehicle body frame 4 is released, and the upper surface 10c of the instrument panel 10 is bent by the pressing force from the collision object.

  As described above, in the collision object protection structure of the second embodiment, when a pressing force is applied to the upper surface 10c of the instrument panel 10, the fitting portion 11 is deformed, whereby the instrument panel 10 and the vehicle body frame 4 are separated. Since the fixing is released and the upper surface 10c of the instrument panel 10 is bent, the impact force applied to the collision object that has collided with the instrument panel 10 can be absorbed and relaxed by the bending of the upper surface 10c of the instrument panel 10. . Therefore, in consideration of the collision between the collision object and the instrument panel 10, the amount of bending of the intermediate film 2c of the front window glass 2 is increased without limiting the amount of bending of the intermediate film 2c (see FIG. 3B). Thus, the impact absorbing performance of the intermediate film 2c can be improved.

In addition, when the support shaft 4a is loosely fitted in the hollow portion 11f, the play amount in the vertical direction of the support shaft 4a and the hollow portion 11f can be moved up and down with respect to the support shaft 4a. Since the distance is the amount of bending of the upper surface 10c of the instrument panel 10, the amount of bending of the upper surface 10c of the instrument panel 10 can be set by adjusting the height of the hollow portion 11f.
In the second embodiment, the upper wall portion 11b is configured to bend by the pressing force from the collision object. However, the upper wall portion 11b may be configured to be bent by the pressing force from the collision object.

[Third Embodiment]
Next, a collision object protection structure for a vehicle according to a third embodiment will be described.
FIG. 6 is a side view of the fitting portion, showing the impact absorbing portion of the third embodiment.

  As shown in FIG. 6, the impact absorbing portion in the collision object protection structure of the third embodiment is provided with a support shaft 15 that fits into the fitting hole 4 b formed in the vehicle body frame 4 on the inner side surface 10 a of the instrument panel 10. The lower end of the support shaft 15 is formed by cutting out a notch 15a.

A weak portion is formed by a notch 15a at the lower portion of the support shaft 15, and the support shaft 15 is easily broken by a pressing force.
The notch 15a is formed at a position where it does not enter the fitting hole 4b when the support shaft 15 is fitted into the fitting hole 4b. When a pressing force acts on the upper surface 10c of the instrument panel 10, When the support shaft 15 is bent, the instrument panel 10 and the vehicle body frame 4 are partially fixed, and the upper surface 10c of the instrument panel 10 is bent.

  Thus, in the collision object protection structure of the third embodiment, when the pressing force is applied to the upper surface 10c of the instrument panel 10, the support shaft 15 is broken, so that the instrument panel 10 and the vehicle body frame 4 are fixed. Since it is released and the upper surface 10c of the instrument panel 10 is bent, the impact force applied to the collision object that has collided with the instrument panel 10 can be absorbed and relaxed by the bending of the upper surface 10c of the instrument panel 10. Therefore, in consideration of the collision between the collision object and the instrument panel 10, the amount of bending of the intermediate film 2c of the front window glass 2 is increased without limiting the amount of bending of the intermediate film 2c (see FIG. 3B). Thus, the impact absorbing performance of the intermediate film 2c can be improved.

[Fourth Embodiment]
Next, a collision object protection structure for a vehicle according to a fourth embodiment will be described.
FIG. 7 is a side sectional view showing a collision object protection structure of the fourth embodiment.

  As shown in FIG. 7, the impact absorbing portion of the fourth embodiment is formed by forming a recess 10d on the upper surface 10c of the instrument panel 10 and attaching a urethane material 16 in the recess 10d.

Thus, by attaching the urethane material 16 that is an elastic member to the upper surface 10 c of the instrument panel 10, the impact force applied to the collision object that has collided with the upper surface 10 c of the instrument panel 10 can be increased by the elasticity of the urethane material 16. Absorption can be relaxed. Therefore, considering the collision between the impact object and the instrument panel 10, the amount of deflection of the intermediate film 2c of the front window glass 2 is increased without limiting the amount of deflection of the intermediate film 2c, and the impact absorption of the interlayer film 2c is absorbed. Performance can be improved.
Furthermore, since the urethane material 16 is exposed to the upper surface 10c of the instrument panel 10, the texture of the interior can be improved.

  In the fourth embodiment, the urethane material 16 is used as the elastic member. However, as long as it is a member that can absorb and relieve the impact force applied to the collision object that has collided with the instrument panel 10, its material and shape are used. Is not limited.

[Other Embodiments]
As mentioned above, although embodiment of this invention was described, this invention is not limited to each said embodiment. For example, the airbag 20 shown in the plan view of FIG. 8 can be combined with the collision object protection structure of each embodiment.
The airbag 20 is a cylindrical bag body that is inflated and deployed on the upper surface of the vehicle 1 immediately before the collision object collides, and a main body portion 21 that is inflated and deployed along the lower edge of the front window glass 2, A pair of pillar portions 22 and 22 that are bent from both ends of the main body portion 21 and expand and deploy along the front pillar of the vehicle 1 are formed, and the pillar portions 22 and 22 cover the front pillar of the vehicle 1. It is possible to prevent the collision object from directly colliding with the front pillar.

  In such a configuration, after the collision object collides with the airbag 20, the instrument panel moves to the upper surface of the front window glass 2 and is bent by the intermediate film 2c of the front window glass 2 (see FIG. 3B). 10 (see FIG. 1), in the collision object protection structure of each embodiment, the impact force applied to the collision object from the instrument panel 10 is absorbed and reduced by the impact absorbing portion of the instrument panel 10. Therefore, the collision object can be reliably protected.

It is a top view showing vehicles of a 1st embodiment. It is the figure which looked at the instrument panel of 1st Embodiment from the downward direction. It is the figure which showed the collision object protection structure of 1st Embodiment, (a) is AA sectional drawing of FIG. 1, (b) is an expanded sectional view of a front window glass, (c) is an expanded sectional view of a rib. is there. It is the sectional side view which showed the collision object protection structure of 2nd Embodiment. It is the figure which showed the impact-absorbing part of 2nd Embodiment, (a) is a sectional side view of a fitting part, (b) is front sectional drawing of a fitting part, (c) is an upper wall part of a fitting part. It is front sectional drawing which showed the aspect exceeding a support shaft. It is the figure which showed the impact-absorbing part of 3rd Embodiment, and is a sectional side view of a fitting part. It is the sectional side view which showed the collision object protection structure of 4th Embodiment. It is the figure which showed the vehicle of other embodiment, and is a top view after inflating and deploying an airbag.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Front window glass 2c Intermediate film 3 Collision protection structure 4 Body frame 10 Instrument panel 14 Rib (1st Embodiment)
14a notch (first embodiment)
14b bent portion (first embodiment)
4a Support shaft (second embodiment)
11 Fitting part (2nd Embodiment)
11a slit (second embodiment)
11b Upper wall (second embodiment)
3b Fitting hole (Third embodiment)
15 Support shaft (third embodiment)
15a notch (third embodiment)
16 Urethane material (4th embodiment)

Claims (7)

  A collision object protecting structure for a vehicle, wherein an impact absorbing portion for absorbing an impact force applied to a collision object colliding with an instrument panel from the front of the front window glass is provided on the instrument panel. The front window glass is a laminated glass in which a transparent intermediate film is sandwiched between two transparent substrates,
2. The vehicle according to claim 1, wherein the intermediate film has toughness so as to absorb an impact without penetrating the colliding object when the colliding object collides with the front window glass. 3. Collision protection structure.   3. The vehicle collision according to claim 1, wherein the impact absorbing portion is configured by forming a fragile portion on a rib provided on an inner surface of the instrument panel. 4. Object protection structure.   The said impact-absorbing part is comprised by the bending part of the rib provided in the inner surface of the said instrument panel being formed in the moderate curvature, The any one of Claims 1-3 characterized by the above-mentioned. The collision object protection structure for a vehicle according to one item.   The impact absorbing portion is configured by providing a cylindrical fitting portion on the instrument panel, on which a support shaft protruding from a vehicle body frame is fitted, and forming a fragile portion in the fitting portion. The vehicle collision object protection structure according to any one of claims 1 to 4, wherein the vehicle collision object protection structure is provided.   The shock absorbing portion is configured by providing a support shaft that fits into a fitting hole formed in a vehicle body frame in the instrument panel, and forming a fragile portion on the support shaft. The vehicle collision object protection structure according to any one of claims 1 to 4.   The vehicle impact object protection structure according to any one of claims 1 to 6, wherein the impact absorbing portion is configured by attaching an elastic member to an upper portion of the instrument panel. .

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