JP5700865B2 - Vehicle headlight unit - Google Patents

Description

  The present invention relates to an improvement in a mounting structure for a vehicle body of a collision detection sensor that detects a collision of a vehicle.

  Some vehicles such as automobiles are equipped with an airbag device. For example, a collision detection sensor that detects a frontal collision of the vehicle and outputs a signal for controlling the operation of the airbag device is provided at the front of the vehicle body. A technique in which a collision detection sensor is attached to the front portion of such a vehicle body is known (for example, see Patent Document 1).

  In the technique disclosed in Patent Document 1, a collision detection sensor of an airbag device is provided at a front portion of a vehicle body. The front side frame of the vehicle body and the front end of the upper member are coupled to the front bumper beam extension portion of the front bumper beam via a coupling plate. A collision detection sensor is provided at a vehicle width direction side end of the connecting plate via a bracket. The collision detection sensor is disposed behind and in the vicinity of the front bumper face. For this reason, when the vehicle collides front, the front bumper face is deformed, and the collision detection sensor detects the collision of the vehicle.

  However, since the collision detection sensor is attached to the vehicle body via a bracket, the number of parts increases and the number of assembly steps also increases.

Japanese Patent No. 5144702

  As described above, since the collision detection sensor needs to quickly detect a collision of the vehicle, the collision detection sensor is disposed at the front portion of the vehicle body. That is, it is an object of the present invention to provide a collision detection sensor mounting technique that can dispose the collision detection sensor at the front portion of the vehicle body, reduce the number of parts, and reduce the assembly man-hours.

  According to the first aspect of the present invention, the headlight case is integrally formed with an extension portion extending from the case inward in the vehicle width direction and positioned inside the vehicle, and a vehicle collision is detected in the extension portion. A collision detection sensor is provided.

Further, as described in claim 1 , preferably, the extension portion has a blocking portion for blocking the collision energy acting on the case at a position between the case and the collision detection sensor. Features.

Furthermore, as described in claim 1 , more preferably, the collision detection sensor is attached to the vehicle body at a position farther from the case than the blocking portion .

  In the invention according to claim 1, the headlight case is integrally formed with an extension portion extending inward in the vehicle width direction and positioned on the inner side of the vehicle from the case, and a vehicle collision is detected in the extension portion. A collision detection sensor is provided. Since the collision detection sensor is integrally provided in the extension part of the headlight, a bracket for attaching the collision detection sensor to the vehicle body becomes unnecessary, and the number of parts can be reduced. Further, by previously assembling the collision detection sensor to the vehicle headlight unit, the collision detection sensor can be assembled to the vehicle body only by assembling the vehicle headlight unit to the vehicle body, so that the number of assembling steps can be reduced. Further, since the headlight is provided at the front part of the vehicle body, the collision detection sensor can be disposed at the front part of the vehicle body by providing the headlight with the collision detection sensor integrally. Further, since the collision detection sensor is provided in the extending portion extending inward in the vehicle width direction from the case, the collision detection sensor can be disposed on the vehicle width direction center side of the vehicle body. For this reason, it is possible to more easily detect a collision in front of the vehicle.

Furthermore, in the invention which concerns on Claim 1 , the extension part has the interruption | blocking part for interrupting | blocking the collision energy which acted on the case in the position between a case and a collision detection sensor. When only the vicinity of the headlight collides with an obstacle and it is not necessary to deploy the airbag, the collision energy from the case of the headlight can be cut off, and unnecessary deployment of the airbag can be eliminated.

Furthermore, in the invention which concerns on Claim 1 , the collision detection sensor is attached to the vehicle body. Since the collision detection sensor itself is provided in the vehicle body, when the vehicle body is deformed, it is possible to appropriately detect a collision for deploying the airbag.

It is a front view of the vehicle which attached the headlight unit for vehicles concerning the present invention. It is a figure explaining the headlight unit for vehicles shown by FIG. FIG. 5 is a plan view of a principal part of a modification of the vehicle headlight unit shown in FIG. 2.

  EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated below based on an accompanying drawing.

  A vehicle to which a vehicle headlight unit according to an embodiment is attached will be described. As shown in FIGS. 1 and 2, the vehicle 10 is, for example, a passenger car. The vehicle body 11 is formed of a monocoque body and is formed in a symmetrical shape. An engine room 12 is formed inside the front portion of the vehicle body 11.

  The front portion of the vehicle body 11 includes left and right front side frames 21 and 21, left and right upper members 22 and 22, left and right upper side members 23 and 23, and a front bulkhead 31. The left and right upper members 22, 22 are located on the outer side in the vehicle width direction, extend forward from the left and right front pillars 24, 24 indicated by imaginary lines, curve downward at the front end portion of the vehicle body 11, and further substantially vertically downward It extends.

  The front bulkhead 31 includes left and right side members 32, 32 that are positioned on the inner side in the vehicle width direction of the left and right upper members 22, 22, and an upper cross member 33 that connects between the upper ends of the left and right side members 32, 32. The lower cross member 34 connects the lower ends of the left and right side members 32, 32.

  The lower cross member 34 extends outward in the vehicle width direction from the left and right side members 32, 32, and the left and right outer ends of the lower cross member 34 are connected to the front lower ends of the left and right upper members 22, 22, respectively. . The front ends of the left and right front side frames 21 and 21 are joined to the left and right upper members 22 and 22 and also joined to the left and right side members 32 and 32. Left and right upper side members 23 and 23 are bridged between the upper cross member 33 and the left and right upper members 22 and 22.

  The front portion of the vehicle body 11 includes left and right front fenders 41, 41, a front bumper face 42, and a front grill and a hood (not shown). The left and right front fenders 41, 41 cover the outer surfaces of the left and right upper members 22, 22 in the vehicle width direction. The front bumper face 42 covers a part of the front of the front bulkhead 31.

  The left and right vehicle headlight units 50, 50 include left and right headlights 51, 51, upper mounting portions 53, 53 extending upward and rearward from cases 52, 52 of the left and right headlights 51, 51, and left and right cases. The outer lower mounting portions 54, 54 extending outwardly and downwardly from 52, 52, and the extending portions 60, 60 extending from the left and right cases 52, 52 to the inside in the vehicle width direction and positioned inside the vehicle 10. The extending portions 60, 60 are in positions that do not protrude from the outer surface of the vehicle 10.

  The upper attachment portions 53 and 53 are attached to the left and right upper side members 23 and 23 by bolts 43. The outer lower attachment portions 54 and 54 are attached to the left and right upper members 22 and 22 by bolts 44. The extending portions 60, 60 are attached to the upper cross member 33 with bolts 45. As described above, the left and right headlights 51 and 51 are respectively attached to the vehicle body 11 at three locations. In addition, in the Example, although the attachment location of the headlight 51 was made into three places, it is not limited to this, If the extension part 60 is provided, it does not interfere even if it provides multiple places.

  FIG. 2A is a front view of the main part of the present invention, and the upper mounting portion 53, the outer lower mounting portion 54, and the extending portion 60 are formed integrally with the case 52. The extending portion 60 includes an arm portion 61 that extends linearly from the inner side portion 55 of the case 52 toward the inner side in the vehicle width direction, a blocking portion 62 provided at an intermediate portion of the arm portion 61, and a tip of the arm portion 61. The main body 71 is provided to house the collision detection sensor 63. That is, the collision detection sensor 63 is provided in the extension part 60. The collision detection sensor 63 is located inside the vehicle 10 and is not exposed to the outside from the outer surface of the vehicle 10. A blocking part 62 is located between the case 52 and the collision detection sensor 63.

  The collision detection sensor 63 detects a vehicle collision for the airbag device. Further, in the embodiment, the arm portion 61 is formed in a straight line shape. However, the present invention is not limited to this, and the arm portion 61 may have other shapes as long as it extends inward in the vehicle width direction even if it is curved or bent. It doesn't matter.

  In the embodiment, the extending part 60 is provided at the upper end of the inner part 55 of the case 52, but the present invention is not limited thereto, and the lower end of the inner part 55 may be used. Furthermore, the extending portion 60 may be provided on the upper portion or the lower portion of the case 52 as long as it extends from the case 52 inward in the vehicle width direction, not the inner portion 55. In the embodiment, the shape of the headlight 51 is substantially rectangular. However, the shape is not limited to this, and the headlight 51 may have other shapes as long as it can be attached to the vehicle body 11 such as a round shape or a horizontally long shape. There is no problem.

  FIG. 2B is a plan view of the main part of the present invention, and the arm portion 61 has a rectangular cross section, and a blocking portion 62 for blocking the collision energy acting on the case is provided on the front surface 64 thereof. The blocking part 62 is a triangular notch in which the front side of the vehicle is opened in plan view. The top 65 is positioned so that it can be seen from the front side of the vehicle. In addition, the notch as the interruption | blocking part 62 is not limited to a triangle shape, A square shape may be sufficient.

  When the vehicle 10 collides, an impact is input to the outer side of the headlight 51 as indicated by an arrow A, and when only the headlight 51 moves backward, the top portion 65 easily cracks, and the blocking portion 62 breaks or deforms. The collision energy that has acted on the case 52 can be cut off. That is, even when the low-rigidity headlight 51 receives an impact due to a slight vehicle collision, the blocking portion 62 is broken or deformed, so that an input unnecessary for deploying the airbag enters the collision detection sensor 63. Can be prevented.

  If the blocking portion has a triangular shape with the rear side of the vehicle open, even if an impact is input to the outer portion of the case 52 as indicated by an arrow A and the outer portion of the case 52 moves rearward, it is compared with the above. However, in the present invention, the blocking part 62 can be appropriately broken or deformed.

  FIG. 2C is a perspective view of a main part of the present invention. The collision detection sensor 63 includes a main body portion 71, a connector portion 72 that is provided on the inner side in the vehicle width direction of the main body portion 71, and connects a harness. A fastening portion 73 provided on the rear side of the main body portion 71 and fastened to the upper cross member 33 by a bolt 45. The fastening portion 73 is enhanced in rigidity by a rib 74 provided on the main body portion 71.

  By fastening the fastening portion 73 provided in the collision detection sensor 63 to the upper cross member 33, the collision detection sensor 63 can be directly attached to the upper cross member 33. As a result, the mounting rigidity of the collision detection sensor 63 can be ensured, and the collision detection sensor 63 can appropriately detect the collision in a vehicle collision in which the upper cross member 33 is deformed.

  On the other hand, since the rigidity of the headlight 51 is low, vibration is transmitted from the vehicle body 11 to the headlight 51 when traveling on a rough road or the like. However, since the mounting rigidity of the sensor 63 is secured by the above-described configuration, the collision sensor 63 is secured. Can prevent unnecessary input from being detected.

  Furthermore, since the fastening part 73 provided in the collision detection sensor 63 is fastened to the upper cross member 33, a bracket for attaching the collision detection sensor 63 is not required, and the number of parts can be reduced.

  The extending portion 60 also serves as a bracket for attaching the headlight 51 to the vehicle body 11. For this reason, the collision detection sensor 63 can be assembled by assembling the headlight 51 to the vehicle body, and the number of assembling steps can be reduced.

  Next, a modification of FIG. 2B will be described. In addition, the same code | symbol is attached about the same structure as the structure shown in FIG.2 (b), and detailed description is abbreviate | omitted. As shown in FIG. 3A, the extending part 60 has a blocking part 62 formed in the middle part of the arm part 61. The blocking part 62 is formed so that the arm part 61 is partially narrowed. By making the arm portion 61 thinner, the blocking portion 62 can be made fragile. Further, since only a part of the arm portion 61 is made thin, molding is also easy.

  As shown in FIG. 3B, the extension part 60 has a blocking part 62 formed in the middle part of the arm part 61. The blocking part 62 has one hole 66 formed in the arm part 61. Since the cross-sectional area of the arm part 61 in the interruption | blocking part 62 becomes small, the interruption | blocking part 62 can be made weak. Further, since only one hole 66 is formed in the arm portion, the processing is easy and the processing cost can be reduced.

  As shown in FIG. 3C, the extending portion 60 has a blocking portion 62 formed in the middle portion of the arm portion 61. The blocking part 62 has a plurality of small holes 67 formed in the arm part 61. Since the cross-sectional area of the arm part 61 in the interruption | blocking part 62 becomes small, the interruption | blocking part 62 can be made weak.

The vehicle body front structure described above will be summarized below.
As shown in FIG. 1, since the collision detection sensor 63 is integrally provided in the extension portion 60 of the headlight 51, a bracket for attaching the collision detection sensor 63 to the vehicle body 11 becomes unnecessary, and the number of parts is reduced. be able to. Also, by previously assembling the collision detection sensor 63 to the vehicle headlight unit 50, the collision detection sensor 63 can be assembled to the vehicle body only by assembling the vehicle headlight unit 50 to the vehicle body, thereby reducing the number of assembly steps. be able to.

  Since the headlight 51 is provided at the front portion of the vehicle body 11, the collision detection sensor 63 can be disposed at the front portion of the vehicle body 11 by providing the headlight 51 with the collision detection sensor 63 integrally.

  As shown in FIGS. 1 to 3, the extending part 60 has a blocking part 62 for blocking the collision energy acting on the case 52 at a position between the case 52 and the collision detection sensor 63. Yes. When only the vicinity of the headlight 51 collides with an obstacle and it is not necessary to deploy the airbag, the collision energy from the case 52 of the headlight 51 can be cut off and unnecessary deployment of the airbag can be eliminated.

  As shown in FIGS. 1 to 3, the collision detection sensor 63 is attached to the vehicle body 11. Since the collision detection sensor 63 itself is provided on the vehicle body 11, when the vehicle body 11 is deformed, it is possible to appropriately detect a collision for deploying the airbag.

  In the embodiment, the cross section of the arm portion 61 is rectangular. However, the cross section is not limited to this, and if the left and right headlights 51 and 51 can be supported, the cross section may be circular or elliptical. There is no problem.

  In the embodiment, the extending portion 60 is formed so as to extend inward in the vehicle width direction and attached to the end portion of the upper cross member 33. However, the present invention is not limited to this, and the attachment position is set to another part of the vehicle body 11. There is no problem.

  In the embodiment, the vehicle body frame structure as shown in FIG. 1 is used. However, the present invention is not limited to this, and other vehicle body frame structures may be used as long as the vehicle headlight unit 50 can be attached.

  The vehicle headlight unit of the present invention is suitable for an automobile having left and right headlights and an airbag device.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle, 11 ... Vehicle body, 12 ... Engine room, 50 ... Left and right vehicle headlight unit, 51 ... Left and right headlight, 52 ... Left and right case, 60 ... Extension part, 61 ... Arm part, 62 ... Shut off Part 63 ... collision detection sensor 73 ... fastening part.

Claims (1)

The headlight case is integrally formed with an extension portion extending from the case inward in the vehicle width direction and positioned inside the vehicle,
The extension part is provided with a collision detection sensor for detecting a collision of the vehicle ,
The extending portion has a blocking portion for blocking the collision energy acting on the case at a position between the case and the collision detection sensor,
The vehicle headlight unit , wherein the collision detection sensor is attached to a vehicle body at a position farther from the case than the blocking portion .

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