JP6579028B2 - Arrangement structure of surrounding information detection sensor - Google Patents

Description

  The present invention relates to an arrangement structure of surrounding information detection sensors.

  As a configuration provided with a peripheral information detection sensor that detects information around the vehicle, Patent Document 1 discloses a configuration in which an all-around laser (a peripheral information detection sensor) is arranged on the roof of the vehicle. On the other hand, Patent Document 2 discloses a configuration in which a laser device (peripheral information detection sensor) is arranged inside a bumper (bumper cover).

JP 2005-291808 A JP 2009-103457 A

  However, in the technique described in Patent Document 1, since the peripheral information detection sensor is attached to the outer surface of the vehicle, it does not look good. As a countermeasure, it is conceivable to arrange a peripheral information detection sensor inside the bumper cover as in Patent Document 2. By the way, generally, the bumper is provided with a collision sensor for detecting a collision of the vehicle. Here, the specific arrangement structure of the peripheral information detection sensor is not disclosed in Patent Document 2, and the detection accuracy of the collision sensor may be affected depending on the position where the peripheral information detection sensor is arranged.

  In view of the above fact, the present invention is to obtain an arrangement structure of a peripheral information detection sensor capable of maintaining good detection accuracy of a collision sensor in a configuration in which the peripheral information detection sensor is arranged inside the bumper cover. Objective.

The arrangement structure of the surrounding information detection sensor according to claim 1 is arranged at a front part of the vehicle or a rear part of the vehicle, and is arranged on a bumper reinforcement extending in a vehicle width direction and on an outer side in the vehicle front-rear direction of the bumper reinforcement. A collision sensor that detects a collision by deformation, and a detection unit that is disposed outside the collision sensor in the front-rear direction of the vehicle and detects vehicle surrounding information, and can transmit a collision load at the time of the collision to the collision sensor a peripheral information detection sensor constructed in such a rigid, the disposed in the longitudinal direction of the vehicle outer side of the bumper reinforcement, have a, a bumper cover covering the peripheral information detection sensor from the longitudinal direction outside the vehicle, said bumper reinforcement An impact absorbing member made of an elastic material is arranged along the bumper reinforcement on the outer side in the longitudinal direction of the vehicle. Are, the peripheral information detection sensor is covered by the shock-absorbing member.

  In the arrangement structure of the surrounding information detection sensor according to claim 1, a collision sensor is arranged outside the bumper reinforcement in the vehicle front-rear direction, and the surrounding information detection sensor is arranged outside the vehicle front-rear direction of the collision sensor. Yes. The peripheral information detection sensor includes a detection unit, and the detection unit detects peripheral information. Here, the surrounding information detection sensor is covered with a bumper cover arranged on the outer side in the vehicle front-rear direction of the bumper reinforcement. Thereby, it can suppress that a periphery information detection sensor is visually recognized from the outer side of a vehicle, and can maintain the appearance of a vehicle favorably.

  Moreover, the surrounding information detection sensor is comprised with the rigid body, and can transmit the collision load at the time of a collision to a collision sensor. For this reason, for example, when the surrounding information detection sensor is arranged on the vehicle front side of the collision sensor provided in the front part of the vehicle, the surrounding information detection sensor is located behind the vehicle when a collision object collides from the front of the vehicle. The collision load is transmitted to the collision sensor. Accordingly, the collision sensor can be effectively deformed at the time of the collision, as compared with a configuration in which the surrounding information detection sensor is not disposed outside the collision sensor in the vehicle front-rear direction.

Furthermore , since the surrounding information detection sensor is covered with the impact absorbing member, a part of the collision load input to the surrounding information detecting sensor is absorbed by the impact absorbing member. Thereby, damage to the surrounding information detection sensor can be suppressed.

The arrangement structure of the peripheral information detection sensor according to claim 2 is the invention according to claim 1 , wherein the shock absorbing member communicates with a housing portion of the peripheral information detecting sensor and an external space of the shock absorbing member. A communicating hole is formed.

In the arrangement structure of the peripheral information detection sensor according to claim 2 , the heat generated by the peripheral information detection sensor can be released to the outside of the shock absorbing member through the communication hole, and the detection accuracy is reduced due to heat generation of the peripheral information detection sensor. Can be suppressed.

The arrangement structure of the surrounding information detection sensor according to claim 3 is the invention according to claim 1 or 2 , wherein the collision sensor includes a pressure tube arranged along the bumper reinforcement. The housing of the peripheral information detection sensor is provided with a holding unit that holds the pressure tube.

In the arrangement structure of the peripheral information detection sensor according to claim 3 , the peripheral information detection sensor and the pressure tube are easily positioned by holding the pressure tube by the holding portion provided in the casing of the peripheral information detection sensor. be able to. Further, since the peripheral information detection sensor is not separated from the pressure tube, the pressure tube can be stably deformed at the time of collision.

According to a fourth aspect of the present invention, there is provided an arrangement structure of the peripheral information detection sensor according to the first aspect of the present invention. An absorbing member is disposed, and the peripheral information detection sensor is fixed so as to be exposed on the outer surface of the shock absorbing member.

In the arrangement structure of the peripheral information detection sensor according to claim 4 , since the shock absorbing member is arranged between the peripheral information detection sensor and the bumper reinforcement, the peripheral information detection sensor is pressed against the bumper reinforcement at the time of a collision. Damage can be suppressed. Further, heat generated by the peripheral information detection sensor is easily released compared to a configuration in which the peripheral information detection sensor is covered with the shock absorbing member.

  According to the arrangement structure of the peripheral information detection sensor according to claim 1, in the configuration in which the peripheral information detection sensor is arranged inside the bumper cover, an excellent effect that the detection accuracy of the collision sensor can be satisfactorily maintained. Have

Moreover , it has the outstanding effect that damage to a surrounding information detection sensor can be suppressed, maintaining the detection accuracy of a collision sensor favorably.

According to the arrangement structure around information detecting sensor according to claim 2, an excellent effect of being able to maintain good detection accuracy around information detecting sensor.

According to the arrangement structure of the peripheral information detection sensor according to claim 3 , the excellent effect that the peripheral information detection sensor and the pressure tube can be easily positioned and the detection accuracy of the collision sensor can be maintained well. Have

According to the arrangement structure of the peripheral information detection sensor according to the fourth aspect , the detection accuracy of the peripheral information detection sensor can be favorably maintained as compared with the configuration in which the peripheral information detection sensor is covered with the shock absorbing member. It has an excellent effect.

It is the sectional side view which looked at the front bumper to which the arrangement structure of the peripheral information detection sensor concerning a 1st embodiment was applied from the vehicle width direction. It is a plane sectional view showing the whole front bumper structure shown in FIG. It is a sectional side view corresponding to FIG. 1 which shows the 1st modification of the arrangement structure of the periphery information detection sensor which concerns on 1st Embodiment. It is a sectional side view corresponding to FIG. 1 which shows the 2nd modification of the arrangement structure of the periphery information detection sensor which concerns on 1st Embodiment. It is the sectional side view which looked at the front bumper to which the arrangement structure of the peripheral information detection sensor concerning a 2nd embodiment was applied from the vehicle width direction. It is the sectional side view which looked at the front bumper to which the arrangement structure of the peripheral information detection sensor concerning a 3rd embodiment was applied from the vehicle width direction. It is the sectional side view which looked at the front bumper to which the arrangement structure of the peripheral information detection sensor concerning a 4th embodiment was applied from the vehicle width direction.

<First Embodiment>

  Hereinafter, the arrangement structure of the peripheral information detection sensor according to the first embodiment of the present invention will be described with reference to the drawings. Note that an arrow FR appropriately shown in the drawings indicates the front side of the vehicle, an arrow LH indicates the left side of the vehicle, and an arrow UP indicates the upper side of the vehicle.

  As shown in FIG. 2, the front bumper 12 to which the arrangement structure of the peripheral information detection sensor according to the present embodiment is applied is arranged at the front portion of the vehicle 10 and the collision of the colliding body with the vehicle 10 (presence or absence of collision) ) Is detected. The front bumper 12 includes a bumper reinforcement 20 (hereinafter referred to as “bumper RF 20”) that forms a bumper skeleton member, a bumper cover 30 disposed at the front end of the vehicle 10, and between the bumper cover 30 and the bumper RF 20. And an absorber 40 as an impact absorbing member disposed in the.

  The bumper RF20 is formed in a hollow, substantially rectangular beam shape, and extends in the vehicle width direction. The bumper RF20 is made of an aluminum-based metal material and is manufactured by a technique such as extrusion molding. Further, as shown in FIG. 1, a plate-shaped reinforcing rib 26 is provided inside the bumper RF20. A pair of reinforcing ribs 26 are provided on the upper and lower sides, and are arranged with the vehicle vertical direction as the plate thickness direction, respectively, to connect the front wall 22 and the rear wall 24 of the bumper RF20. For this reason, the internal space of the bumper RF 20 is partitioned into three by the pair of reinforcing ribs 26. In the present embodiment, the closed cross section that constitutes the upper part of the bumper RF20 is the upper closed cross section 28A, and the closed cross section that constitutes the intermediate part in the vertical direction of the bumper RF20 is the intermediate closed cross section 28B, which constitutes the lower part of the bumper RF20. The closed section is a lower closed section 28C.

  As shown in FIG. 2, on the vehicle rear side of the bumper RF 20, a pair of left and right front side members 14 constituting a skeleton member on the vehicle body side are extended in the vehicle front-rear direction, and at the front end of the front side member 14. Both ends of the bumper RF20 in the vehicle width direction are coupled. Further, both end portions of the bumper RF20 in the vehicle width direction protrude outward in the vehicle width direction with respect to the front side member 14, and are bent toward the rear side of the vehicle. Is inclined to. Further, the corners 29A on the vehicle front side at both ends 29 of the bumper RF 20 in the vehicle width direction are formed in a substantially arc shape in plan view.

  The bumper cover 30 is disposed on the front side of the bumper RF 20 (outside in the vehicle front-rear direction) and is made of a resin material. Further, both side portions of the bumper cover 30 in the vehicle width direction are curved toward the rear side of the vehicle toward the outer side in the vehicle width direction in a plan view, and constitute a corner portion of the vehicle 10. The bumper cover 30 covers the absorber 40 and the surrounding information detection sensor 16 described later from the front side of the vehicle together with the bumper RF20.

  The absorber 40 is made of a foamed resin material such as urethane foam, which is an example of an elastic body, and is disposed along the bumper RF20 on the vehicle front side (vehicle longitudinal direction outer side) of the bumper RF20. Specifically, the absorber 40 has an absorber main body 42 that constitutes an intermediate portion of the absorber 40 in the vehicle width direction, and the absorber main body 42 is on the vehicle front side with respect to the vehicle width direction intermediate portion of the bumper RF20. It is arranged adjacent to. The absorber 40 has an absorber side portion 44 that constitutes both ends of the absorber 40 in the vehicle width direction. The absorber side portion 44 is disposed adjacent to the vehicle front side with respect to both ends of the bumper RF20 in the vehicle width direction, and is inclined toward the vehicle rear side toward the outer side in the vehicle width direction in a plan view. The front end of 44 protrudes outward in the vehicle width direction with respect to the bumper RF20. And as FIG. 1 shows, 40 A of rear surfaces of the absorber 40 are being fixed in the state contact | abutted to the front wall 22 of bumper RF20.

  On the rear surface 40A of the absorber 40, a holding groove portion 46 for holding a pressure tube 52 described later is formed at a position on the vehicle front side with respect to the upper closed section 28A of the bumper RF20. The holding groove portion 46 is formed in a substantially C-shape (specifically, a circular shape partially opened to the vehicle rear side) opened to the vehicle rear side in a side sectional view, and penetrates in the longitudinal direction of the absorber 40. Has been.

  As shown in FIG. 2, the front bumper 12 includes a collision sensor 50, and the collision sensor 50 outputs a pressure tube 52 assembled to the absorber 40 and a signal corresponding to a pressure change in the pressure tube 52. And a pressure sensor 58.

  As shown in FIG. 1, the pressure tube 52 is configured as a hollow structure having a substantially annular cross section. The outer diameter of the pressure tube 52 is set to be slightly smaller than the inner diameter of the holding groove 46 of the absorber 40 and is set to be larger than the vertical dimension of the opening of the holding groove 46. The length of the pressure tube 52 in the longitudinal direction is set to be longer than the length of the absorber 40 in the longitudinal direction. The pressure tube 52 is assembled in the holding groove 46.

  As shown in FIG. 2, the pressure tube 52 is arranged on the vehicle front side (the vehicle front-rear direction outer side) of the bumper RF 20 and is configured to detect a collision by being deformed. Specifically, the pressure tube 52 includes a pressure tube main body portion 54 disposed along the longitudinal direction of the absorber 40, and a pressure tube side portion 56 extending outward from the absorber main body portion 42 in the vehicle width direction. It consists of The proximal end portion of the pressure tube side portion 56 is assembled in the holding groove portion 46. Accordingly, the base end side portion of the pressure tube side portion 56 is inclined toward the vehicle rear side as it goes outward in the vehicle width direction in a plan view corresponding to the absorber side portion 44.

  In addition, a substantially C-shaped curved portion 56 </ b> A that is open inward in the vehicle width direction in a plan view is formed in the middle portion in the longitudinal direction of the pressure tube side portion 56. As a result, the pressure tube side portion 56 is bent into a substantially U shape opened in the vehicle width direction in a plan view, and the tip end portion of the pressure tube side portion 56 is on the vehicle upper side at both end portions in the vehicle width direction of the bumper RF20. Is arranged. Further, the curved portion 56 </ b> A of the pressure tube side portion 56 is disposed on the outer side in the vehicle width direction with respect to the bumper RF <b> 20 and the absorber side portion 44.

  On the other hand, the pressure sensors 58 are respectively provided at both ends in the longitudinal direction of the pressure tube 52 (tip portions of the pressure tube side portions 56), and are fixed to the upper surface 20A of the bumper RF20. The pressure sensor 58 is electrically connected to an ECU (Electronic Control Unit) 60. Then, as the pressure tube 52 is deformed, a signal corresponding to a pressure change in the pressure tube 52 is output from the pressure sensor 58 to the ECU 60.

  Attachments 70 extend from the absorber side portion 44 of the absorber 40 outward in the vehicle width direction. The attachment 70 is formed in a substantially long plate shape by a resin material, and is disposed on the rear surface side of the absorber side portion 44 and extends in the vehicle width direction. Specifically, the end portion of the attachment 70 on the inner side in the vehicle width direction is disposed on the pressure tube side portion 56 of the pressure tube 52 and is fixed to the bumper RF 20 via the absorber 40. Further, the attachment 70 is inclined toward the vehicle rear side as it goes outward in the vehicle width direction in a plan view so as to follow the pressure tube side portion 56. For this reason, the rear surface 70 </ b> A of the attachment 70 is in contact with the outer peripheral surface of the pressure tube side portion 56.

  A notch 74 is formed at the inner end of the front surface 70B of the attachment 70 in the vehicle width direction. The notch 74 is formed in a substantially V-shaped groove opened to the vehicle front side in a plan view, and penetrates in the vehicle vertical direction. And the part in which the notch part 74 in the attachment 70 was formed is made into the bending start part 76, and the bending start part 76 is arrange | positioned in the vehicle front side with respect to the front corner | angular part 29A of the vehicle width direction both ends 29 of bumper RF20. Has been. And when the load to the vehicle rear side more than a predetermined value acts on the attachment 70, it is comprised so that the attachment 70 may bend and deform | transform to the vehicle rear side from the bending starting point part 76.

(Ambient information detection sensor)
Here, the peripheral information detection sensor 16 is provided on the vehicle front side (the vehicle front-rear direction outer side) of the pressure tube 52. Specifically, the peripheral information detection sensor 16 is disposed on the vehicle front side of the intermediate portion in the vehicle width direction of the pressure tube main body 54 in the pressure tube 52 and is assembled to the absorber 40.

  As shown in FIG. 1, the peripheral information detection sensor 16 has a substantially rectangular parallelepiped casing 16 </ b> A made of a rigid body. The surrounding information detection sensor 16 includes a detection unit 16B that detects the surrounding information of the vehicle 10, and the surrounding information detection sensor 16 is assembled to the absorber 40 so that the detection unit 16B faces the front side of the vehicle. Yes. Further, as shown in FIG. 2, the peripheral information detection sensor 16 is electrically connected to the ECU 60.

  As a method of assembling the peripheral information detection sensor 16 to the absorber 40, there is a method of forming the accommodating portion 40 </ b> B for arranging the peripheral information detection sensor 16 in the absorber 40 continuously with the holding groove portion 46. In this method, before assembling the pressure tube 52 in the holding groove 46, the peripheral information detection sensor 16 is assembled in the housing portion 40B while pushing the holding groove 46 up and down. In this way, the peripheral information detection sensor 16 is covered with the absorber 40 except for the portion where the pressure tube 52 is disposed, as shown in FIG.

  Since the surrounding information detection sensor 16 is arranged as described above, when the bumper cover 30 enters the rear side of the vehicle and the absorber 40 is pressed when the collision object collides, the absorber 40 is applied to the front wall 22 of the bumper RF 20. The reaction force is taken and crushed in the vehicle longitudinal direction (compressed and deformed). For this reason, the collision load is transmitted to the pressure tube 52 via the peripheral information detection sensor 16. That is, the surrounding information detection sensor 16 moves to the vehicle rear side, and deforms (crushes) the pressure tube 52. Thereby, the pressure in the pressure tube 52 changes. Then, as the pressure in the pressure tube 52 changes, a signal corresponding to the pressure change is output from the pressure sensor 58 to the ECU 60.

  In the present embodiment, as an example, a millimeter wave radar is used as the peripheral information detection sensor 16 and the radio wave transmission unit and reception unit are the detection unit 16B. However, the present invention is not limited to this. For example, a laser radar and an optical camera may be used, and other sensors may be used. When a laser radar is used as the peripheral information detection sensor 16, the light emitting unit and the light receiving unit of the laser beam serve as the detection unit. In this case, it is necessary to form a portion of the bumper cover 30 on the vehicle front side of the detection unit with a material through which the laser passes, and to form a slit or hole through which the laser passes in the absorber 40. When an optical camera is used as the peripheral information detection sensor 16, a visible light receiving unit is a detection unit. In this case, it is necessary to form a portion of the bumper cover 30 on the vehicle front side of the detection unit with a material that transmits visible light, and to form a slit or a hole in the absorber 40.

(Action and effect)
Next, functions and effects in the present embodiment will be described.

  In the present embodiment, the peripheral information detection sensor 16 is covered by a bumper cover 30 disposed on the front side of the bumper RF20. Thereby, it can suppress that the periphery information detection sensor 16 is visually recognized from the outer side of the vehicle 10, and maintains the appearance of a vehicle favorable compared with the structure which has arrange | positioned the periphery information detection sensor to the roof of the vehicle 10. can do.

  Further, the surrounding information detection sensor 16 (the casing 16A thereof) is formed of a rigid body, and can transmit a collision load at the time of collision of the colliding body to the surrounding information detection sensor. For this reason, the pressure tube 52 can be effectively deformed at the time of collision of the collision body, compared with a configuration in which the peripheral information detection sensor 16 is not disposed on the vehicle front side of the pressure tube 52. That is, the shock absorbing member such as the absorber 40 is formed of a soft member such as urethane foam, and is deformed when a collision load is input. Therefore, in order to effectively deform the pressure tube 52, a rigid body is used. It is preferable to press the pressure tube 52. In the present embodiment, the peripheral information detection sensor 16 made of a rigid body is disposed on the vehicle front side of the pressure tube 52, and the pressure tube 52 is pressed against the front wall 22 of the bumper RF 20 by the peripheral information detection sensor 16 to press the pressure tube. 52 can be effectively deformed. As a result, the pressure in the pressure tube 52 can be changed effectively, and the detection accuracy of the collision sensor 50 can be maintained well. Further, it is not necessary to separately provide a dedicated rigid body for effectively deforming the pressure tube 52.

  In the present embodiment, since the peripheral information detection sensor 16 is covered by the absorber 40, a part of the collision load input to the peripheral information detection sensor 16 is absorbed by the absorber 40. Thereby, damage to the surrounding information detection sensor 16 can be suppressed, and it is not necessary to frequently replace the surrounding information detection sensor 16. Further, vibration during traveling input to the surrounding information detection sensor 16 can be attenuated by the absorber 40, and the detection accuracy of the surrounding information detection sensor 16 can be improved.

  As another effect, in this embodiment, the attachment 70 is extended from the absorber side part 44 of the absorber 40 to the vehicle width direction outer side. Thereby, when a collision object collides with the bumper cover 30 in the corner part of the vehicle 10, the pressure tube side part 56 of the pressure tube 52 is bent and deformed by the attachment 70, and whether or not the vehicle 10 collides with a pedestrian. Can be determined.

  Further, the attachment 70 is formed with a bending start point 76, and the attachment 70 is bent and deformed with the bending start point 76 as a starting point. For this reason, when the collision object collides, the attachment 70 can be stably bent and deformed at the bending start point portion 76, and the vehicle width direction outer side portion of the attachment 70 can be displaced to the vehicle rear side. Thereby, since the pressure tube side part 56 bends and deform | transforms favorably to the vehicle rear side, the detection accuracy by the collision sensor 50 can be improved.

  In the present embodiment, the peripheral information detection sensor 16 is covered by the absorber 40 except for the portion where the pressure tube 52 is disposed, but is not limited thereto. For example, it is good also as a structure in which the communication hole 18 was formed like the 1st modification shown by FIG. Moreover, it is good also as a structure which changed the position of the surrounding information detection sensor 16 like the 2nd modification shown by FIG.

(First modification)
As shown in FIG. 3, the peripheral information detection sensor 16 of this modification is disposed at the same position as in the first embodiment. Here, the communication hole 18 is formed in the absorber 40, and the housing portion 40 </ b> B of the peripheral information detection sensor 16 and the external space of the absorber 40 are communicated with each other through the communication hole 18.

  Specifically, the communication hole 18 is formed in the upper part of the absorber 40 and in front of the vehicle of the peripheral information detection sensor 16. Moreover, the communication hole 18 is formed larger than the detection part 16B of the surrounding information detection sensor 16, and the whole detection part 16B is exposed to the vehicle front side.

  According to this modification, in addition to the operation and effect of the first embodiment, the heat generated by the peripheral information detection sensor 16 can be released to the outside of the absorber 40 through the communication hole 18. Thereby, the fall of the detection accuracy by the heat_generation | fever of the surrounding information detection sensor 16 can be suppressed. That is, the detection accuracy of the peripheral information detection sensor 16 can be maintained satisfactorily.

  Further, since the communication hole 18 is formed in front of the detection unit 16B and the entire detection unit 16B is exposed to the front side of the vehicle, the detection medium used for detection by the detection unit 16B is prevented from being blocked by the absorber 40. can do. For example, if a portion of the bumper cover 30 located in front of the vehicle of the detection unit 16B is formed by a transparent plate or the like that transmits laser light, the laser light is not blocked by the absorber 40 and the bumper cover 30. Therefore, even when a laser radar is used as the peripheral information detection sensor 16, the peripheral information can be detected satisfactorily.

  The position and number of the communication holes are not limited, and another communication hole may be formed above the vehicle of the peripheral information detection sensor 16 in addition to the communication hole 18 illustrated in FIG.

(Second modification)
As shown in FIG. 4, in this modification, the peripheral information detection sensor 16 is arranged in front of the vehicle with respect to the position of the first embodiment shown in FIG. 1. For this reason, the sensor rear side absorption part 19 is provided by the absorber 40 between the pressure tube 52 and the surrounding information detection sensor 16.

  As a method of arranging the peripheral information detection sensor 16 inside the absorber 40, there is a method of cutting a part of the absorber 40 to form the accommodating portion 40B of the peripheral information detection sensor 16. In this case, there is a method in which the peripheral information detection sensor 16 is arranged in the accommodating portion 40B formed in the absorber 40, and then the cut portion of the absorber 40 is joined with an adhesive or the like.

  In this modification, both the vehicle front side and the vehicle rear side of the surrounding information detection sensor 16 are covered with the absorber 40, so that damage to the surrounding information detection sensor 16 can be effectively suppressed.

  Further, when the collision object collides, the bumper cover 30 enters the rear side of the vehicle and the absorber 40 is pressed, so that the peripheral information detection sensor 16 moves to the rear side of the vehicle. And the absorber 40 located in the sensor rear side absorption part 19 is crushed in the vehicle front-back direction (compressed deformation), and the pressure tube 52 is deformed (crushed). In this way, it is possible to ensure the detection accuracy of the collision sensor 50 while effectively suppressing damage to the surrounding information detection sensor 16.

Second Embodiment
Next, an arrangement structure of the peripheral information detection sensor according to the second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about the structure similar to 1st Embodiment, and description is abbreviate | omitted suitably.

  As shown in FIG. 5, in the present embodiment, a pressure tube 52 constituting the collision sensor 50 is disposed on the front side of the bumper RF 20, and the peripheral information detection sensor 80 is disposed on the front side of the pressure tube 52 with respect to the vehicle. Has been placed.

  Since the peripheral information detection sensor 80 is disposed in the accommodating portion 40 </ b> B inside the absorber 40, it is covered with the absorber 40. The peripheral information detection sensor 80 includes a housing 80A made of a rigid body.

  Here, the housing 80A includes a holding claw 82 as a holding portion. A pair of holding claws 82 are vertically extended from the middle portion of the casing 80 </ b> A to the vehicle rear side, and the pressure tube 52 is held by the pair of holding claws 82.

  Specifically, the pair of holding claws 82 are formed at an interval slightly narrower than the outer diameter of the pressure tube 52. The length of each holding claw 82 is approximately the same as the outer diameter of the pressure tube 52. Each holding claw 82 is formed with a substantially arc-shaped recess corresponding to the pressure tube 52. By attaching the pair of holding claws 82 to the pressure tube 52 in a state of being bent up and down, The pressure tube 52 is held by the holding claw 82.

  In addition, the surrounding information detection sensor 80 includes a detection unit 80B that detects surrounding information of the vehicle 10. The detection unit 80B has the same configuration as the detection unit 16B of the peripheral information detection sensor 16 of the first embodiment.

(Action and effect)
Next, functions and effects in the present embodiment will be described.

  In the present embodiment, the peripheral information detection sensor 80 and the pressure tube 52 can be easily positioned by holding the pressure tube 52 by the pair of holding claws 82 provided in the housing 80 </ b> A of the peripheral information detection sensor 80. it can. Further, since the peripheral information detection sensor 80 is not separated from the pressure tube 52, the pressure tube 52 can be stably deformed when the collision object collides. In particular, in this embodiment, the pressure tube 52 is held at the height of the intermediate portion in the vertical direction of the peripheral information detection sensor 80 by the pair of upper and lower holding claws 82. For this reason, when pressing the pressure tube 52 against the front wall 22 of the bumper RF20 by the peripheral information detection sensor 80, the peripheral information detection sensor 80 can be prevented from rotating in a side view, and the pressure tube 52 is effectively Can be deformed. Other effects are the same as in the first embodiment.

<Third Embodiment>
Next, an arrangement structure of the peripheral information detection sensor according to the third embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about the structure similar to 1st Embodiment, and description is abbreviate | omitted suitably.

  As shown in FIG. 6, in this embodiment, the shape of an absorber 86 as an impact absorbing member is different from that of the absorber 40 of the first embodiment, and the peripheral information detection sensor 16 is disposed on the outer surface of the absorber 86. Yes.

  Specifically, the absorber 86 of the present embodiment includes a lower absorbent part 87 having a substantially rectangular shape in a side sectional view and an upper absorbent part 88 having a substantially rectangular shape in a side sectional view, and a foamed resin such as urethane foam. It is composed of materials. The lower absorbent portion 87 is disposed along the bumper RF20 on the vehicle front side of the bumper RF20, and the rear surface 87A of the lower absorbent portion 87 is fixed to the front wall 22 of the bumper RF20. Further, the upper end of the lower absorbent portion 87 is located at the height of the reinforcing rib 26 between the upper closed section 28A and the intermediate closed section 28B in the bumper RF20. On the other hand, the lower end of the lower absorbing portion 87 is positioned at the height of the middle portion in the vertical direction of the lower closed section 28C of the bumper RF20.

  The upper absorbent portion 88 is formed integrally with the lower absorbent portion 87 on the upper portion of the lower absorbent portion 87. Further, the rear surface 88A of the upper absorbent portion 88 is fixed to the front wall 22 of the bumper RF20. Further, a holding groove 88B for holding the pressure tube 52 is formed on the rear surface 88A of the upper absorbent portion 88. The holding groove portion 88B is formed in a substantially C shape (specifically, a circular shape partially opened to the vehicle rear side) opened to the vehicle rear side in a side sectional view, and the longitudinal direction of the upper absorption portion 88 It is penetrated by.

  Here, the upper absorbent portion 88 is formed to have a shorter length in the vehicle front-rear direction than the lower absorbent portion 87. For this reason, a step is formed between the upper absorbing portion 88 and the lower absorbing portion 87 in the absorber 86. In other words, the absorber 86 has a shape in which a region of the upper end and the front end of the absorber 40 of the first embodiment that is substantially rectangular in a side sectional view is cut out. And the surrounding information detection sensor 16 is arrange | positioned in this area | region.

  Specifically, the rear surface of the peripheral information detection sensor 16 is fixed to the front surface (outer surface) of the upper absorption portion 88 on the vehicle front side, and the lower surface of the peripheral information detection sensor 16 is the upper surface (outer surface) of the lower absorption portion 87. ). Further, the rear surface of the peripheral information detection sensor 16 is in contact with the front surface of the upper absorbent portion 88 and is fixed to the front surface of the upper absorbent portion 88. The four surfaces of the peripheral information detection sensor 16 excluding the lower surface and the rear surface are exposed inside the bumper cover 30.

(Action and effect)
Next, functions and effects in the present embodiment will be described.

  In this embodiment, since the upper absorption part 88 (absorber 86) is arrange | positioned between the periphery information detection sensor 16 and bumper RF20, the periphery information detection sensor 16 is pressed against bumper RF20 at the time of collision of a collision body, and is damaged. This can be suppressed. In particular, in the present embodiment, since the lower absorption portion 87 is provided from the front of the peripheral information detection sensor 16 to the vehicle front side, the bumper cover 30 that has entered the vehicle rear side is moved to the lower absorption portion when a collision object collides. 87 can be received. As a result, damage to the surrounding information detection sensor 16 can be suppressed.

  Further, compared to the configuration of the first embodiment in which the peripheral information detection sensor 16 is covered with the absorber 86, heat generated by the peripheral information detection sensor 16 can be easily released, and the detection accuracy of the peripheral information detection sensor 16 is favorably maintained. can do. Note that the lengths of the lower absorbent portion 87 and the upper absorbent portion 88 in the vehicle front-rear direction may be the same length. In this case, the configuration is such that the peripheral information detection sensor is fixed to the front surface (outer surface) of the absorber 40 of the first embodiment shown in FIG. 1, and heat is easily released as in the present embodiment.

<Fourth embodiment>
Next, an arrangement structure of the peripheral information detection sensor according to the fourth embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected about the structure similar to 1st Embodiment, and description is abbreviate | omitted suitably.

  As shown in FIG. 7, in this embodiment, a collision sensor 90 is provided instead of the collision sensor 50 of the first embodiment, and the collision sensor 90 includes a pressure chamber 90A and a pressure sensor 90B. It is configured. The pressure chamber 90A is disposed on the upper surface of an absorber 92 as an impact absorbing member.

  The absorber 92 is disposed along the bumper RF20 on the vehicle front side of the bumper RF20, and is made of a foamed resin material such as urethane foam. The absorber 92 is formed in a substantially rectangular shape in a side sectional view, and the rear surface 92A of the absorber 92 is fixed to the front wall 22 of the bumper RF20.

  A pressure chamber 90 </ b> A constituting the collision sensor 90 is fixed on the upper surface of the absorber 92. The rear surface of the pressure chamber 90A is fixed to the front wall 22 of the bumper RF20. Here, the pressure chamber 90 </ b> A is formed in a substantially rectangular shape and hollow in a side sectional view, and extends in the vehicle width direction along the front wall 22 of the bumper RF <b> 20. The pressure chamber 90A has a communication hole (not shown) that communicates with the atmosphere. For this reason, in the normal state (before the collision), the pressure in the internal space of the pressure chamber 90A is atmospheric pressure.

  A pressure sensor 90B for detecting the pressure in the pressure chamber 90A is provided inside the pressure chamber 90A, and the pressure sensor 90B is electrically connected to the ECU 60 (see FIG. 2). For this reason, when the pressure chamber 90A is compressed by collision with a collision body or the like, the pressure chamber 90A is deformed so as to reduce the volume while allowing air to escape from the communication hole. A signal corresponding to a pressure change in the pressure chamber 90A is output from the pressure sensor 90B to the ECU 60.

  Here, the peripheral information detection sensor 16 is disposed on the vehicle front side of the pressure chamber 90A (collision sensor 90). The casing 16A of the peripheral information detection sensor 16 is formed of a rigid body that can transmit a collision load at the time of collision to the pressure chamber 90A. The surrounding information detection sensor 16 includes a detecting unit 16B that detects the surrounding information of the vehicle, and the detecting unit 16B is directed to the front side of the vehicle.

(Action and effect)
Next, functions and effects in the present embodiment will be described.

  In the present embodiment, the pressure chamber 90A can be effectively deformed when the collision object collides, as compared with a configuration in which the surrounding information detection sensor 16 is not disposed on the vehicle front side of the pressure chamber 90A. As a result, the pressure in the pressure chamber 90A can be effectively changed, and the detection accuracy of the collision sensor 90 can be maintained well. Further, it is not necessary to separately provide a dedicated rigid body for effectively deforming the pressure chamber 90A.

  In the present embodiment, the pressure chamber 90A and the peripheral information detection sensor 16 are arranged on the upper surface of the absorber 92, but the present invention is not limited to this. For example, the pressure chamber 90 </ b> A and the surrounding information detection sensor 16 may be disposed inside the absorber 92.

  The first embodiment to the fourth embodiment of the present invention have been described above. However, the present invention is not limited to the above-described configuration, and various types other than the above-described configuration can be made without departing from the gist of the present invention. Of course, it can be implemented in any manner. For example, in the above embodiment, the arrangement structure in which the peripheral information detection sensor is arranged on the front bumper 12 has been described. However, the present invention is not limited to this. Similarly, the arrangement structure of the peripheral information detection sensor can be applied to the rear bumper at the rear of the vehicle. In this case, the configuration of FIG. 1 is reversed, and the collision sensor is disposed on the rear side of the bumper reinforcement constituting the rear bumper, and the surrounding information detection sensor is disposed on the rear side of the collision sensor. Become.

  Moreover, in the said embodiment, as FIG. 2 shows, although the periphery information detection sensor 16 has been arrange | positioned in the vehicle width direction intermediate part of the front bumper 12, it is not limited to this. For example, the peripheral information detection sensor 16 may be disposed on the vehicle front side of both ends in the vehicle width direction of the bumper RF20. Moreover, it is good also as a structure by which the 3 or more surrounding information detection sensors 16 are arrange | positioned at the front bumper 12, and the detection accuracy of surrounding information can be improved, so that the number of the surrounding information detection sensors 16 is increased.

  Further, in the first embodiment, as shown in FIG. 1, the outer peripheral surface of the peripheral information detection sensor 16 is in close contact with the absorber 40, but the present invention is not limited to this. For example, a cavity larger than the peripheral information detection sensor 16 may be formed inside the absorber 40, and the peripheral information detection sensor 16 may be disposed in this cavity.

16 Peripheral information detection sensor 16B Detection part 18 Communication hole 20 Bumper reinforcement 30 Bumper cover 40 Absorber (impact absorbing member)
50 Collision sensor 52 Pressure tube (collision sensor)
80 Peripheral information detection sensor 80A Housing 80B Detection unit 82 Holding claw (holding unit)
86 Absorber (Shock absorbing member)
90 Collision sensor 92 Absorber (Shock absorbing member)

Claims (4)

A bumper reinforcement arranged in the front or rear of the vehicle and extending in the vehicle width direction;
A collision sensor that is disposed outside the bumper reinforcement in the vehicle front-rear direction and detects a collision by deformation; and
A peripheral information detection sensor comprising a rigid body that is disposed outside the front-rear direction of the collision sensor and detects vehicle peripheral information, and is configured to transmit a collision load at the time of collision to the collision sensor;
A bumper cover which is disposed outside the bumper reinforcement in the vehicle front-rear direction and covers the peripheral information detection sensor from the vehicle front-rear direction outside;
I have a,
On the vehicle longitudinal direction outside of the bumper reinforcement, an impact absorbing member made of an elastic material is disposed along the bumper reinforcement,
The surrounding information detection sensor is an arrangement structure of a surrounding information detection sensor covered with the shock absorbing member . The arrangement structure of the peripheral information detection sensor according to claim 1, wherein the shock absorbing member is formed with a communication hole that connects the housing portion of the peripheral information detecting sensor and the external space of the shock absorbing member . The collision sensor includes a pressure tube disposed along the bumper reinforcement,
Wherein the housing surrounding information detection sensor, the arrangement of the peripheral information detection sensor according to claim 1 or 2 holding portion is provided for holding the pressure tube. On the vehicle longitudinal direction outside of the bumper reinforcement, an impact absorbing member made of an elastic material is disposed along the bumper reinforcement,
The peripheral information detection sensor arrangement structure according to claim 1, wherein the peripheral information detection sensor is fixed so as to be exposed on an outer surface of the shock absorbing member .

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